Merge branch 'develop' of github.com:matrix-org/matrix-react-sdk into webrtc_settings

and i18nize webrtc stufffs

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

# Conflicts:
#	src/components/structures/UserSettings.js

.gitignore

@@ -10,5 +10,5 @@ npm-debug.log
 # test reports created by karma
 /karma-reports
 
-# ignore auto-generated component index
+/.idea
 /src/component-index.js

.travis.yml

@@ -5,5 +5,6 @@ install:
     - npm install
     - (cd node_modules/matrix-js-sdk && npm install)
 script:
-    - npm run test
-    - ./.travis-test-riot.sh
+    # don't run the riot tests unless the react-sdk tests pass, otherwise
+    # the output is confusing.
+    - npm run test && ./.travis-test-riot.sh

README.md

@@ -24,6 +24,10 @@ In the interim, `vector-im/riot-web` and `matrix-org/matrix-react-sdk` should
 be considered as a single project (for instance, matrix-react-sdk bugs
 are currently filed against vector-im/riot-web rather than this project).
 
+Translation Status
+==================
+[![translationsstatus](https://translate.nordgedanken.de/widgets/riot-web/-/multi-auto.svg)](https://translate.nordgedanken.de/engage/riot-web/?utm_source=widget)
+
 Developer Guide
 ===============
 
@@ -190,4 +194,3 @@ Alternative instructions:
   * Create an index.html file pulling in your compiled javascript and the
     CSS bundle from the skin you use. For now, you'll also need to manually
     import CSS from any skins that your skin inherts from.
-

karma.conf.js

@@ -55,11 +55,18 @@ module.exports = function (config) {
             // some images to reduce noise from the tests
             {pattern: 'test/img/*', watched: false, included: false,
              served: true, nocache: false},
+            // translation files
+            {pattern: 'src/i18n/strings/*', watcheed: false, included: false, served: true},
+            {pattern: 'test/i18n/*', watched: false, included: false, served: true},
         ],
 
-        // redirect img links to the karma server
         proxies: {
+            // redirect img links to the karma server
             "/img/": "/base/test/img/",
+            // special languages.json file for the tests
+            "/i18n/languages.json": "/base/test/i18n/languages.json",
+            // and redirect i18n requests
+            "/i18n/": "/base/src/i18n/strings/",
         },
 
         // list of files to exclude
@@ -166,11 +173,15 @@ module.exports = function (config) {
                     'sinon': 'sinon/pkg/sinon.js',
                 },
                 root: [
-                    path.resolve('./src'),
                     path.resolve('./test'),
                 ],
             },
             devtool: 'inline-source-map',
+            externals: {
+                // Don't try to bundle electron: leave it as a commonjs dependency
+                // (the 'commonjs' here means it will output a 'require')
+                "electron": "commonjs electron",
+            },
         },
 
         webpackMiddleware: {

package.json

@@ -50,6 +50,7 @@
     "browser-request": "^0.3.3",
     "classnames": "^2.1.2",
     "commonmark": "^0.27.0",
+    "counterpart": "^0.18.0",
     "draft-js": "^0.8.1",
     "draft-js-export-html": "^0.5.0",
     "draft-js-export-markdown": "^0.2.0",
@@ -63,7 +64,7 @@
     "isomorphic-fetch": "^2.2.1",
     "linkifyjs": "^2.1.3",
     "lodash": "^4.13.1",
-    "matrix-js-sdk": "0.7.8",
+    "matrix-js-sdk": "0.7.9",
     "optimist": "^0.6.1",
     "q": "^1.4.1",
     "react": "^15.4.0",

scripts/check-i18n.pl

@@ -0,0 +1,192 @@
+#!/usr/bin/perl
+
+use strict;
+use warnings;
+use Cwd 'abs_path';
+
+# script which checks how out of sync the i18ns are drifting
+
+# example i18n format:
+#   "%(oneUser)sleft": "%(oneUser)sleft",
+
+$|=1;
+
+$0 =~ /^(.*\/)/;
+my $i18ndir = abs_path($1."/../src/i18n/strings");
+my $srcdir = abs_path($1."/../src");
+
+my $en = read_i18n($i18ndir."/en_EN.json");
+
+my $src_strings = read_src_strings($srcdir);
+my $src = {};
+
+print "Checking strings in src\n";
+foreach my $tuple (@$src_strings) {
+    my ($s, $file) = (@$tuple);
+    $src->{$s} = $file;
+    if (!$en->{$s}) {
+        if ($en->{$s . '.'}) {
+            printf ("%50s %24s\t%s\n", $file, "en_EN has fullstop!", $s);
+        }
+        else {
+            $s =~ /^(.*)\.?$/;
+            if ($en->{$1}) {
+                printf ("%50s %24s\t%s\n", $file, "en_EN lacks fullstop!", $s);
+            }
+            else {
+                printf ("%50s %24s\t%s\n", $file, "Translation missing!", $s);
+            }
+        }
+    }
+}
+
+print "\nChecking en_EN\n";
+my $count = 0;
+my $remaining_src = {};
+foreach (keys %$src) { $remaining_src->{$_}++ };
+
+foreach my $k (sort keys %$en) {
+    # crappy heuristic to ignore country codes for now...
+    next if ($k =~ /^(..|..-..)$/);
+
+    if ($en->{$k} ne $k) {
+        printf ("%50s %24s\t%s\n", "en_EN", "en_EN is not symmetrical", $k);
+    }
+
+    if (!$src->{$k}) {
+        if ($src->{$k. '.'}) {
+            printf ("%50s %24s\t%s\n", $src->{$k. '.'}, "src has fullstop!", $k);
+        }
+        else {
+            $k =~ /^(.*)\.?$/;
+            if ($src->{$1}) {
+                printf ("%50s %24s\t%s\n", $src->{$1}, "src lacks fullstop!", $k);                
+            }
+            else {
+                printf ("%50s %24s\t%s\n", '???', "Not present in src?", $k);
+            }
+        }
+    }
+    else {
+        $count++;
+        delete $remaining_src->{$k};
+    }
+}
+printf ("$count/" . (scalar keys %$src) . " strings found in src are present in en_EN\n");
+foreach (keys %$remaining_src) {
+    print "missing: $_\n";
+}
+
+opendir(DIR, $i18ndir) || die $!;
+my @files = readdir(DIR);
+closedir(DIR);
+foreach my $lang (grep { -f "$i18ndir/$_" && !/(basefile|en_EN)\.json/ } @files) {
+    print "\nChecking $lang\n";
+
+    my $map = read_i18n($i18ndir."/".$lang);
+    my $count = 0;
+
+    my $remaining_en = {};
+    foreach (keys %$en) { $remaining_en->{$_}++ };
+
+    foreach my $k (sort keys %$map) {
+        {
+            no warnings 'uninitialized';
+            my $vars = {};
+            while ($k =~ /%\((.*?)\)s/g) {
+                $vars->{$1}++;
+            }
+            while ($map->{$k} =~ /%\((.*?)\)s/g) {
+                $vars->{$1}--;
+            }
+            foreach my $var (keys %$vars) {
+                if ($vars->{$var} != 0) {
+                    printf ("%10s %24s\t%s\n", $lang, "Broken var ($var)s", $k);
+                }
+            }
+        }
+
+        if ($en->{$k}) {
+            if ($map->{$k} eq $k) {
+                printf ("%10s %24s\t%s\n", $lang, "Untranslated string?", $k);
+            }
+            $count++;
+            delete $remaining_en->{$k};
+        }
+        else {
+            if ($en->{$k . "."}) {
+                printf ("%10s %24s\t%s\n", $lang, "en_EN has fullstop!", $k);
+                next;
+            }
+
+            $k =~ /^(.*)\.?$/;
+            if ($en->{$1}) {
+                printf ("%10s %24s\t%s\n", $lang, "en_EN lacks fullstop!", $k);
+                next;
+            }
+
+            printf ("%10s %24s\t%s\n", $lang, "Not present in en_EN", $k);
+        }
+    }
+
+    if (scalar keys %$remaining_en < 100) {
+        foreach (keys %$remaining_en) {
+            printf ("%10s %24s\t%s\n", $lang, "Not yet translated", $_);
+        }
+    }
+
+    printf ("$count/" . (scalar keys %$en) . " strings translated\n");
+}
+
+sub read_i18n {
+    my $path = shift;
+    my $map = {};
+    $path =~ /.*\/(.*)$/;
+    my $lang = $1;
+
+    open(FILE, "<", $path) || die $!;
+    while(<FILE>) {
+        if ($_ =~ m/^(\s+)"(.*?)"(: *)"(.*?)"(,?)$/) {
+            my ($indent, $src, $colon, $dst, $comma) = ($1, $2, $3, $4, $5);
+            $src =~ s/\\"/"/g;
+            $dst =~ s/\\"/"/g;
+
+            if ($map->{$src}) {
+                printf ("%10s %24s\t%s\n", $lang, "Duplicate translation!", $src);
+            }
+            $map->{$src} = $dst;
+        }
+    }
+    close(FILE);
+
+    return $map;
+}
+
+sub read_src_strings {
+    my $path = shift;
+
+    use File::Find;
+    use File::Slurp;
+
+    my $strings = [];
+
+    my @files;
+    find( sub { push @files, $File::Find::name if (-f $_ && /\.jsx?$/) }, $path );
+    foreach my $file (@files) {
+        my $src = read_file($file);
+        $src =~ s/'\s*\+\s*'//g;
+        $src =~ s/"\s*\+\s*"//g;
+
+        $file =~ s/^.*\/src/src/;
+        while ($src =~ /_t(?:Jsx)?\(\s*'(.*?[^\\])'/sg) {
+            my $s = $1;
+            $s =~ s/\\'/'/g;
+            push @$strings, [$s, $file];
+        }
+        while ($src =~ /_t(?:Jsx)?\(\s*"(.*?[^\\])"/sg) {
+            push @$strings, [$1, $file];
+        }
+    }
+
+    return $strings;
+}

scripts/fix-i18n.pl

@@ -0,0 +1,104 @@
+#!/usr/bin/perl -ni
+
+use strict;
+use warnings;
+
+# script which synchronises i18n strings to include punctuation.
+# i've cherry-picked ones which seem to have diverged between the different translations
+# from TextForEvent, causing missing events all over the place
+
+BEGIN {
+$::fixups = [split(/\n/, <<EOT
+%(targetName)s accepted the invitation for %(displayName)s.
+%(targetName)s accepted an invitation.
+%(senderName)s requested a VoIP conference.
+%(senderName)s invited %(targetName)s.
+%(senderName)s banned %(targetName)s.
+%(senderName)s changed their display name from %(oldDisplayName)s to %(displayName)s.
+%(senderName)s set their display name to %(displayName)s.
+%(senderName)s removed their display name (%(oldDisplayName)s).
+%(senderName)s removed their profile picture.
+%(senderName)s changed their profile picture.
+%(senderName)s set a profile picture.
+VoIP conference started.
+%(targetName)s joined the room.
+VoIP conference finished.
+%(targetName)s rejected the invitation.
+%(targetName)s left the room.
+%(senderName)s unbanned %(targetName)s.
+%(senderName)s kicked %(targetName)s.
+%(senderName)s withdrew %(targetName)s's inivitation.
+%(targetName)s left the room.
+%(senderDisplayName)s changed the topic to "%(topic)s".
+%(senderDisplayName)s changed the room name to %(roomName)s.
+%(senderDisplayName)s sent an image.
+%(senderName)s answered the call.
+%(senderName)s ended the call.
+%(senderName)s placed a %(callType)s call.
+%(senderName)s sent an invitation to %(targetDisplayName)s to join the room.
+%(senderName)s turned on end-to-end encryption (algorithm %(algorithm)s).
+%(senderName)s changed the power level of %(powerLevelDiffText)s.
+For security, this session has been signed out. Please sign in again.
+You need to log back in to generate end-to-end encryption keys for this device and submit the public key to your homeserver. This is a once off; sorry for the inconvenience.
+A new password must be entered.
+Guests can't set avatars. Please register.
+Failed to set avatar.
+Unable to verify email address.
+Guests can't use labs features. Please register.
+A new password must be entered.
+Resetting password will currently reset any end-to-end encryption keys on all devices, making encrypted chat history unreadable, unless you first export your room keys and re-import them afterwards. In future this will be improved.
+Guests cannot join this room even if explicitly invited.
+Guest users can't invite users. Please register to invite.
+This room is inaccessible to guests. You may be able to join if you register.
+delete the alias.
+remove %(name)s from the directory.
+Conference call failed.
+Conference calling is in development and may not be reliable.
+Guest users can't create new rooms. Please register to create room and start a chat.
+Server may be unavailable, overloaded, or you hit a bug.
+Server unavailable, overloaded, or something else went wrong.
+You are already in a call.
+You cannot place VoIP calls in this browser.
+You cannot place a call with yourself.
+Your email address does not appear to be associated with a Matrix ID on this Homeserver.
+EOT
+)];
+}
+
+# example i18n format:
+#   "%(oneUser)sleft": "%(oneUser)sleft",
+
+# script called with the line of the file to be checked
+my $sub = 0;
+if ($_ =~ m/^(\s+)"(.*?)"(: *)"(.*?)"(,?)$/) {
+    my ($indent, $src, $colon, $dst, $comma) = ($1, $2, $3, $4, $5);
+    $src =~ s/\\"/"/g;
+    $dst =~ s/\\"/"/g;
+
+    foreach my $fixup (@{$::fixups}) {
+        my $dotless_fixup = substr($fixup, 0, -1);
+
+        if ($src eq $dotless_fixup) {
+            print STDERR "fixing up src: $src\n";
+            $src .= '.';
+            $sub = 1;
+        }
+
+        if ($src eq $fixup && $dst !~ /\.$/) {
+            print STDERR "fixing up dst: $dst\n";
+            $dst .= '.';
+            $sub = 1;            
+        }
+
+        if ($sub) {
+            $src =~ s/"/\\"/g;
+            $dst =~ s/"/\\"/g;
+            print qq($indent"$src"$colon"$dst"$comma\n);
+            last;
+        }        
+    }
+}
+
+if (!$sub) {
+    print $_;
+}

src/AddThreepid.js

@@ -16,6 +16,7 @@ limitations under the License.
 */
 
 var MatrixClientPeg = require("./MatrixClientPeg");
+import { _t } from './languageHandler';
 
 /**
  * Allows a user to add a third party identifier to their Home Server and,
@@ -44,7 +45,7 @@ class AddThreepid {
             return res;
         }, function(err) {
             if (err.errcode == 'M_THREEPID_IN_USE') {
-                err.message = "This email address is already in use";
+                err.message = _t('This email address is already in use');
             } else if (err.httpStatus) {
                 err.message = err.message + ` (Status ${err.httpStatus})`;
             }
@@ -69,7 +70,7 @@ class AddThreepid {
             return res;
         }, function(err) {
             if (err.errcode == 'M_THREEPID_IN_USE') {
-                err.message = "This phone number is already in use";
+                err.message = _t('This phone number is already in use');
             } else if (err.httpStatus) {
                 err.message = err.message + ` (Status ${err.httpStatus})`;
             }
@@ -91,7 +92,7 @@ class AddThreepid {
             id_server: identityServerDomain
         }, this.bind).catch(function(err) {
             if (err.httpStatus === 401) {
-                err.message = "Failed to verify email address: make sure you clicked the link in the email";
+                err.message = _t('Failed to verify email address: make sure you clicked the link in the email');
             }
             else if (err.httpStatus) {
                 err.message += ` (Status ${err.httpStatus})`;

src/Analytics.js

@@ -0,0 +1,145 @@
+/*
+ Copyright 2017 Michael Telatynski <7t3chguy@gmail.com>
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+import { getCurrentLanguage } from './languageHandler';
+import MatrixClientPeg from './MatrixClientPeg';
+import PlatformPeg from './PlatformPeg';
+import SdkConfig from './SdkConfig';
+
+function redact(str) {
+    return str.replace(/#\/(room|user)\/(.+)/, "#/$1/<redacted>");
+}
+
+const customVariables = {
+    'App Platform': 1,
+    'App Version': 2,
+    'User Type': 3,
+    'Chosen Language': 4,
+};
+
+
+class Analytics {
+    constructor() {
+        this._paq = null;
+        this.disabled = true;
+        this.firstPage = true;
+    }
+
+    /**
+     * Enable Analytics if initialized but disabled
+     * otherwise try and initalize, no-op if piwik config missing
+     */
+    enable() {
+        if (this._paq || this._init()) {
+            this.disabled = false;
+        }
+    }
+
+    /**
+     * Disable Analytics calls, will not fully unload Piwik until a refresh,
+     * but this is second best, Piwik should not pull anything implicitly.
+     */
+    disable() {
+        this.disabled = true;
+    }
+
+    _init() {
+        const config = SdkConfig.get();
+        if (!config || !config.piwik || !config.piwik.url || !config.piwik.siteId) return;
+
+        const url = config.piwik.url;
+        const siteId = config.piwik.siteId;
+        const self = this;
+
+        window._paq = this._paq = window._paq || [];
+
+        this._paq.push(['setTrackerUrl', url+'piwik.php']);
+        this._paq.push(['setSiteId', siteId]);
+
+        this._paq.push(['trackAllContentImpressions']);
+        this._paq.push(['discardHashTag', false]);
+        this._paq.push(['enableHeartBeatTimer']);
+        this._paq.push(['enableLinkTracking', true]);
+
+        const platform = PlatformPeg.get();
+        this._setVisitVariable('App Platform', platform.getHumanReadableName());
+        platform.getAppVersion().then((version) => {
+            this._setVisitVariable('App Version', version);
+        }).catch(() => {
+            this._setVisitVariable('App Version', 'unknown');
+        });
+
+        this._setVisitVariable('Chosen Language', getCurrentLanguage());
+
+        (function() {
+            const g = document.createElement('script');
+            const s = document.getElementsByTagName('script')[0];
+            g.type='text/javascript'; g.async=true; g.defer=true; g.src=url+'piwik.js';
+
+            g.onload = function() {
+                console.log('Initialised anonymous analytics');
+                self._paq = window._paq;
+            };
+
+            s.parentNode.insertBefore(g, s);
+        })();
+
+        return true;
+    }
+
+    trackPageChange() {
+        if (this.disabled) return;
+        if (this.firstPage) {
+            // De-duplicate first page
+            // router seems to hit the fn twice
+            this.firstPage = false;
+            return;
+        }
+        this._paq.push(['setCustomUrl', redact(window.location.href)]);
+        this._paq.push(['trackPageView']);
+    }
+
+    trackEvent(category, action, name) {
+        if (this.disabled) return;
+        this._paq.push(['trackEvent', category, action, name]);
+    }
+
+    logout() {
+        if (this.disabled) return;
+        this._paq.push(['deleteCookies']);
+    }
+
+    login() { // not used currently
+        const cli = MatrixClientPeg.get();
+        if (this.disabled || !cli) return;
+
+        this._paq.push(['setUserId', `@${cli.getUserIdLocalpart()}:${cli.getDomain()}`]);
+    }
+
+    _setVisitVariable(key, value) {
+        this._paq.push(['setCustomVariable', customVariables[key], key, value, 'visit']);
+    }
+
+    setGuest(guest) {
+        if (this.disabled) return;
+        this._setVisitVariable('User Type', guest ? 'Guest' : 'Logged In');
+    }
+}
+
+if (!global.mxAnalytics) {
+    global.mxAnalytics = new Analytics();
+}
+module.exports = global.mxAnalytics;

src/BasePlatform.js

@@ -29,6 +29,11 @@ export default class BasePlatform {
         this.errorDidOccur = false;
     }
 
+    // Used primarily for Analytics
+    getHumanReadableName(): string {
+        return 'Base Platform';
+    }
+
     setNotificationCount(count: number) {
         this.notificationCount = count;
     }
@@ -66,11 +71,14 @@ export default class BasePlatform {
     displayNotification(title: string, msg: string, avatarUrl: string, room: Object) {
     }
 
+    loudNotification(ev: Event, room: Object) {
+    }
+
     /**
      * Returns a promise that resolves to a string representing
      * the current version of the application.
      */
-    getAppVersion() {
+    getAppVersion(): Promise<string> {
         throw new Error("getAppVersion not implemented!");
     }
 
@@ -79,10 +87,12 @@ export default class BasePlatform {
      * with getUserMedia, return a string explaining why not.
      * Otherwise, return null.
      */
-    screenCaptureErrorString() {
+    screenCaptureErrorString(): string {
         return "Not implemented";
     }
 
+    isElectron(): boolean { return false; }
+
     /**
      * Restarts the application, without neccessarily reloading
      * any application code

src/CallHandler.js

@@ -55,6 +55,7 @@ var MatrixClientPeg = require('./MatrixClientPeg');
 var PlatformPeg = require("./PlatformPeg");
 var Modal = require('./Modal');
 var sdk = require('./index');
+import { _t } from './languageHandler';
 var Matrix = require("matrix-js-sdk");
 var dis = require("./dispatcher");
 
@@ -142,8 +143,8 @@ function _setCallListeners(call) {
             play("busyAudio");
             var ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
             Modal.createDialog(ErrorDialog, {
-                title: "Call Timeout",
-                description: "The remote side failed to pick up."
+                title: _t('Call Timeout'),
+                description: _t('The remote side failed to pick up') + '.',
             });
         }
         else if (oldState === "invite_sent") {
@@ -179,7 +180,8 @@ function _setCallState(call, roomId, status) {
     }
     dis.dispatch({
         action: 'call_state',
-        room_id: roomId
+        room_id: roomId,
+        state: status,
     });
 }
 
@@ -203,8 +205,8 @@ function _onAction(payload) {
                 console.log("Can't capture screen: " + screenCapErrorString);
                 const ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
                 Modal.createDialog(ErrorDialog, {
-                    title: "Unable to capture screen",
-                    description: screenCapErrorString
+                    title: _t('Unable to capture screen'),
+                    description: screenCapErrorString,
                 });
                 return;
             }
@@ -223,8 +225,8 @@ function _onAction(payload) {
             if (module.exports.getAnyActiveCall()) {
                 const ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
                 Modal.createDialog(ErrorDialog, {
-                    title: "Existing Call",
-                    description: "You are already in a call."
+                    title: _t('Existing Call'),
+                    description: _t('You are already in a call.'),
                 });
                 return; // don't allow >1 call to be placed.
             }
@@ -233,8 +235,8 @@ function _onAction(payload) {
             if (!MatrixClientPeg.get().supportsVoip()) {
                 const ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
                 Modal.createDialog(ErrorDialog, {
-                    title: "VoIP is unsupported",
-                    description: "You cannot place VoIP calls in this browser."
+                    title: _t('VoIP is unsupported'),
+                    description: _t('You cannot place VoIP calls in this browser.'),
                 });
                 return;
             }
@@ -249,7 +251,7 @@ function _onAction(payload) {
             if (members.length <= 1) {
                 const ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
                 Modal.createDialog(ErrorDialog, {
-                    description: "You cannot place a call with yourself."
+                    description: _t('You cannot place a call with yourself.'),
                 });
                 return;
             }
@@ -275,14 +277,14 @@ function _onAction(payload) {
             if (!ConferenceHandler) {
                 const ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
                 Modal.createDialog(ErrorDialog, {
-                    description: "Conference calls are not supported in this client"
+                    description: _t('Conference calls are not supported in this client'),
                 });
             }
             else if (!MatrixClientPeg.get().supportsVoip()) {
                 const ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
                 Modal.createDialog(ErrorDialog, {
-                    title: "VoIP is unsupported",
-                    description: "You cannot place VoIP calls in this browser."
+                    title: _t('VoIP is unsupported'),
+                    description: _t('You cannot place VoIP calls in this browser.'),
                 });
             }
             else if (MatrixClientPeg.get().isRoomEncrypted(payload.room_id)) {
@@ -294,14 +296,14 @@ function _onAction(payload) {
                 // Therefore we disable conference calling in E2E rooms.
                 const ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
                 Modal.createDialog(ErrorDialog, {
-                    description: "Conference calls are not supported in encrypted rooms",
+                    description: _t('Conference calls are not supported in encrypted rooms'),
                 });
             }
             else {
                 var QuestionDialog = sdk.getComponent("dialogs.QuestionDialog");
                 Modal.createDialog(QuestionDialog, {
-                    title: "Warning!",
-                    description: "Conference calling is in development and may not be reliable.",
+                    title: _t('Warning!'),
+                    description: _t('Conference calling is in development and may not be reliable.'),
                     onFinished: confirm=>{
                         if (confirm) {
                             ConferenceHandler.createNewMatrixCall(
@@ -312,8 +314,8 @@ function _onAction(payload) {
                                 const ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
                                 console.error("Conference call failed: " + err);
                                 Modal.createDialog(ErrorDialog, {
-                                    title: "Failed to set up conference call",
-                                    description: "Conference call failed. " + ((err && err.message) ? err.message : ""),
+                                    title: _t('Failed to set up conference call'),
+                                    description: _t('Conference call failed.') + ' ' + ((err && err.message) ? err.message : ''),
                                 });
                             });
                         }

src/ContentMessages.js

@@ -21,6 +21,7 @@ var extend = require('./extend');
 var dis = require('./dispatcher');
 var MatrixClientPeg = require('./MatrixClientPeg');
 var sdk = require('./index');
+import { _t } from './languageHandler';
 var Modal = require('./Modal');
 
 var encrypt = require("browser-encrypt-attachment");
@@ -347,14 +348,14 @@ class ContentMessages {
         }, function(err) {
             error = err;
             if (!upload.canceled) {
-                var desc = "The file '"+upload.fileName+"' failed to upload.";
+                var desc = _t('The file \'%(fileName)s\' failed to upload', {fileName: upload.fileName}) + '.';
                 if (err.http_status == 413) {
-                    desc = "The file '"+upload.fileName+"' exceeds this home server's size limit for uploads";
+                    desc = _t('The file \'%(fileName)s\' exceeds this home server\'s size limit for uploads', {fileName: upload.fileName});
                 }
                 var ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
                 Modal.createDialog(ErrorDialog, {
-                    title: "Upload Failed",
-                    description: desc
+                    title: _t('Upload Failed'),
+                    description: desc,
                 });
             }
         }).finally(() => {

src/DateUtils.js

@@ -1,5 +1,6 @@
 /*
 Copyright 2015, 2016 OpenMarket Ltd
+Copyright 2017 Vector Creations Ltd
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -15,40 +16,89 @@ limitations under the License.
 */
 
 'use strict';
+import { _t } from './languageHandler';
 
-var days = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"];
-var months = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"];
+function getDaysArray() {
+    return [
+        _t('Sun'),
+        _t('Mon'),
+        _t('Tue'),
+        _t('Wed'),
+        _t('Thu'),
+        _t('Fri'),
+        _t('Sat'),
+    ];
+}
+
+function getMonthsArray() {
+    return [
+        _t('Jan'),
+        _t('Feb'),
+        _t('Mar'),
+        _t('Apr'),
+        _t('May'),
+        _t('Jun'),
+        _t('Jul'),
+        _t('Aug'),
+        _t('Sep'),
+        _t('Oct'),
+        _t('Nov'),
+        _t('Dec'),
+    ];
+}
 
 function pad(n) {
     return (n < 10 ? '0' : '') + n;
 }
 
+function twelveHourTime(date) {
+    let hours = date.getHours() % 12;
+    const minutes = pad(date.getMinutes());
+    const ampm = date.getHours() >= 12 ? 'PM' : 'AM';
+    hours = pad(hours ? hours : 12);
+    return `${hours}:${minutes}${ampm}`;
+}
+
 module.exports = {
     formatDate: function(date) {
-        // date.toLocaleTimeString is completely system dependent.
-        // just go 24h for now
-
         var now = new Date();
+        const days = getDaysArray();
+        const months = getMonthsArray();
         if (date.toDateString() === now.toDateString()) {
-            return pad(date.getHours()) + ':' + pad(date.getMinutes());
+            return this.formatTime(date);
         }
         else if (now.getTime() - date.getTime() < 6 * 24 * 60 * 60 * 1000) {
-            return days[date.getDay()] + " " + pad(date.getHours()) + ':' + pad(date.getMinutes());
+            // TODO: use standard date localize function provided in counterpart
+            return _t('%(weekDayName)s %(time)s', {weekDayName: days[date.getDay()], time: this.formatTime(date)});
         }
         else if (now.getFullYear() === date.getFullYear()) {
-            return days[date.getDay()] + ", " + months[date.getMonth()] + " " + date.getDate() + " " + pad(date.getHours()) + ':' + pad(date.getMinutes());
-        }
-        else {
-            return this.formatFullDate(date);
+            // TODO: use standard date localize function provided in counterpart
+            return _t('%(weekDayName)s, %(monthName)s %(day)s %(time)s', {
+                weekDayName: days[date.getDay()],
+                monthName: months[date.getMonth()],
+                day: date.getDate(),
+                time: this.formatTime(date),
+            });
         }
+        return this.formatFullDate(date);
     },
 
-    formatFullDate: function(date) {
-        return days[date.getDay()] + ", " + months[date.getMonth()] + " " + date.getDate() + " " + date.getFullYear() + " " + pad(date.getHours()) + ':' + pad(date.getMinutes());
+    formatFullDate: function(date, showTwelveHour=false) {
+        const days = getDaysArray();
+        const months = getMonthsArray();
+        return _t('%(weekDayName)s, %(monthName)s %(day)s %(fullYear)s %(time)s', {
+            weekDayName: days[date.getDay()],
+            monthName: months[date.getMonth()],
+            day: date.getDate(),
+            fullYear: date.getFullYear(),
+            time: showTwelveHour ? twelveHourTime(date) : this.formatTime(date),
+        });
     },
 
-    formatTime: function(date) {
+    formatTime: function(date, showTwelveHour=false) {
+        if (showTwelveHour) {
+          return twelveHourTime(date);
+        }
         return pad(date.getHours()) + ':' + pad(date.getMinutes());
-    }
+    },
 };
-

src/HtmlUtils.js

@@ -360,7 +360,7 @@ export function bodyToHtml(content, highlights, opts) {
         'mx_EventTile_bigEmoji': emojiBody,
         'markdown-body': isHtml,
     });
-    return <span className={className} dangerouslySetInnerHTML={{ __html: safeBody }} />;
+    return <span className={className} dangerouslySetInnerHTML={{ __html: safeBody }} dir="auto" />;
 }
 
 export function emojifyText(text) {

src/Lifecycle.js

@@ -19,6 +19,7 @@ import q from 'q';
 import Matrix from 'matrix-js-sdk';
 
 import MatrixClientPeg from './MatrixClientPeg';
+import Analytics from './Analytics';
 import Notifier from './Notifier';
 import UserActivity from './UserActivity';
 import Presence from './Presence';
@@ -27,6 +28,7 @@ import DMRoomMap from './utils/DMRoomMap';
 import RtsClient from './RtsClient';
 import Modal from './Modal';
 import sdk from './index';
+import { _t } from './languageHandler';
 
 /**
  * Called at startup, to attempt to build a logged-in Matrix session. It tries
@@ -229,14 +231,16 @@ function _handleRestoreFailure(e) {
 
     let msg = e.message;
     if (msg == "OLM.BAD_LEGACY_ACCOUNT_PICKLE") {
-        msg = "You need to log back in to generate end-to-end encryption keys "
-            + "for this device and submit the public key to your homeserver. "
-            + "This is a once off; sorry for the inconvenience.";
+        msg = _t(
+            'You need to log back in to generate end-to-end encryption keys'
+            + ' for this device and submit the public key to your homeserver.'
+            + ' This is a once off; sorry for the inconvenience.',
+        );
 
-        _clearLocalStorage();
+        _clearStorage();
 
         return q.reject(new Error(
-            "Unable to restore previous session: " + msg,
+            _t('Unable to restore previous session') + ': ' + msg,
         ));
     }
 
@@ -254,7 +258,7 @@ function _handleRestoreFailure(e) {
     return def.promise.then((success) => {
         if (success) {
             // user clicked continue.
-            _clearLocalStorage();
+            _clearStorage();
             return false;
         }
 
@@ -275,6 +279,8 @@ export function initRtsClient(url) {
 export function setLoggedIn(credentials) {
     credentials.guest = Boolean(credentials.guest);
 
+    Analytics.setGuest(credentials.guest);
+
     console.log(
         "setLoggedIn: mxid:", credentials.userId,
         "deviceId:", credentials.deviceId,
@@ -326,6 +332,10 @@ export function setLoggedIn(credentials) {
     }
 
     // stop any running clients before we create a new one with these new credentials
+    //
+    // XXX: why do we have any running clients here? Maybe on sign-in after
+    // initial use as a guest? but what about our persistent storage? we need to
+    // be careful not to leak e2e data created as one user into another session.
     stopMatrixClient();
 
     MatrixClientPeg.replaceUsingCreds(credentials);
@@ -396,12 +406,19 @@ export function startMatrixClient() {
  * a session has been logged out / ended.
  */
 export function onLoggedOut() {
-    _clearLocalStorage();
-    stopMatrixClient();
+    stopMatrixClient(true);
     dis.dispatch({action: 'on_logged_out'});
 }
 
-function _clearLocalStorage() {
+function _clearStorage() {
+    Analytics.logout();
+
+    const cli = MatrixClientPeg.get();
+    if (cli) {
+        // TODO: *really* ought to wait for the promise to complete
+        cli.clearStores().done();
+    }
+
     if (!window.localStorage) {
         return;
     }
@@ -418,9 +435,13 @@ function _clearLocalStorage() {
 }
 
 /**
- * Stop all the background processes related to the current client
+ * Stop all the background processes related to the current client.
+ *
+ * Optionally clears persistent stores.
+ *
+ * @param {boolean} clearStores true to clear the persistent stores.
  */
-export function stopMatrixClient() {
+export function stopMatrixClient(clearStores) {
     Notifier.stop();
     UserActivity.stop();
     Presence.stop();
@@ -429,7 +450,13 @@ export function stopMatrixClient() {
     if (cli) {
         cli.stopClient();
         cli.removeAllListeners();
-        cli.store.deleteAllData();
-        MatrixClientPeg.unset();
     }
+
+    if (clearStores) {
+        // note that we have to do this *after* stopping the client, but
+        // *before* clearing the MatrixClientPeg.
+        _clearStorage();
+    }
+
+    MatrixClientPeg.unset();
 }

src/Login.js

@@ -16,6 +16,7 @@ limitations under the License.
 */
 
 import Matrix from "matrix-js-sdk";
+import { _t } from "./languageHandler";
 
 import q from 'q';
 import url from 'url';
@@ -97,9 +98,9 @@ export default class Login {
             };
         }, (error) => {
             if (error.httpStatus === 403) {
-                error.friendlyText = "Guest access is disabled on this Home Server.";
+                error.friendlyText = _t("Guest access is disabled on this Home Server.");
             } else {
-                error.friendlyText = "Failed to register as guest: " + error.data;
+                error.friendlyText = _t("Failed to register as guest:") + ' ' + error.data;
             }
             throw error;
         });
@@ -158,12 +159,12 @@ export default class Login {
         }, function(error) {
             if (error.httpStatus == 400 && loginParams.medium) {
                 error.friendlyText = (
-                    'This Home Server does not support login using email address.'
+                    _t('This Home Server does not support login using email address.')
                 );
             }
             else if (error.httpStatus === 403) {
                 error.friendlyText = (
-                    'Incorrect username and/or password.'
+                    _t('Incorrect username and/or password.')
                 );
                 if (self._fallbackHsUrl) {
                     var fbClient = Matrix.createClient({
@@ -187,7 +188,7 @@ export default class Login {
             }
             else {
                 error.friendlyText = (
-                    'There was a problem logging in. (HTTP ' + error.httpStatus + ")"
+                    _t("There was a problem logging in.") + ' (HTTP ' + error.httpStatus + ")"
                 );
             }
             throw error;

src/Modal.js

@@ -19,6 +19,7 @@ limitations under the License.
 
 var React = require('react');
 var ReactDOM = require('react-dom');
+import Analytics from './Analytics';
 import sdk from './index';
 
 const DIALOG_CONTAINER_ID = "mx_Dialog_Container";
@@ -104,6 +105,9 @@ class ModalManager {
     }
 
     createDialog(Element, props, className) {
+        if (props && props.title) {
+            Analytics.trackEvent('Modal', props.title, 'createDialog');
+        }
         return this.createDialogAsync((cb) => {cb(Element);}, props, className);
     }
 

src/Notifier.js

@@ -18,9 +18,11 @@ limitations under the License.
 import MatrixClientPeg from './MatrixClientPeg';
 import PlatformPeg from './PlatformPeg';
 import TextForEvent from './TextForEvent';
+import Analytics from './Analytics';
 import Avatar from './Avatar';
 import dis from './dispatcher';
 import sdk from './index';
+import { _t } from './languageHandler';
 import Modal from './Modal';
 
 /*
@@ -120,6 +122,9 @@ const Notifier = {
     setEnabled: function(enable, callback) {
         const plaf = PlatformPeg.get();
         if (!plaf) return;
+
+        Analytics.trackEvent('Notifier', 'Set Enabled', enable);
+
         // make sure that we persist the current setting audio_enabled setting
         // before changing anything
         if (global.localStorage) {
@@ -134,13 +139,11 @@ const Notifier = {
                 if (result !== 'granted') {
                     // The permission request was dismissed or denied
                     const description = result === 'denied'
-                        ? 'Riot does not have permission to send you notifications'
-                        + ' - please check your browser settings'
-                        : 'Riot was not given permission to send notifications'
-                        + ' - please try again';
+                        ? _t('Riot does not have permission to send you notifications - please check your browser settings')
+                        : _t('Riot was not given permission to send notifications - please try again');
                     const ErrorDialog = sdk.getComponent('dialogs.ErrorDialog');
                     Modal.createDialog(ErrorDialog, {
-                        title: 'Unable to enable Notifications',
+                        title: _t('Unable to enable Notifications'),
                         description,
                     });
                     return;
@@ -200,6 +203,8 @@ const Notifier = {
     setToolbarHidden: function(hidden, persistent = true) {
         this.toolbarHidden = hidden;
 
+        Analytics.trackEvent('Notifier', 'Set Toolbar Hidden', hidden);
+
         // XXX: why are we dispatching this here?
         // this is nothing to do with notifier_enabled
         dis.dispatch({
@@ -245,6 +250,7 @@ const Notifier = {
                 this._displayPopupNotification(ev, room);
             }
             if (actions.tweaks.sound && this.isAudioEnabled()) {
+                PlatformPeg.get().loudNotification(ev, room);
                 this._playAudioNotification(ev, room);
             }
         }

src/PasswordReset.js

@@ -15,6 +15,7 @@ limitations under the License.
 */
 
 var Matrix = require("matrix-js-sdk");
+import { _t } from './languageHandler';
 
 /**
  * Allows a user to reset their password on a homeserver.
@@ -53,7 +54,7 @@ class PasswordReset {
             return res;
         }, function(err) {
             if (err.errcode == 'M_THREEPID_NOT_FOUND') {
-                 err.message = "This email address was not found";
+                 err.message = _t('This email address was not found');
             } else if (err.httpStatus) {
                 err.message = err.message + ` (Status ${err.httpStatus})`;
             }
@@ -78,10 +79,10 @@ class PasswordReset {
             }
         }, this.password).catch(function(err) {
             if (err.httpStatus === 401) {
-                err.message = "Failed to verify email address: make sure you clicked the link in the email";
+                err.message = _t('Failed to verify email address: make sure you clicked the link in the email');
             }
             else if (err.httpStatus === 404) {
-                err.message = "Your email address does not appear to be associated with a Matrix ID on this Homeserver.";
+                err.message = _t('Your email address does not appear to be associated with a Matrix ID on this Homeserver.');
             }
             else if (err.httpStatus) {
                 err.message += ` (Status ${err.httpStatus})`;

src/Roles.js

@@ -13,14 +13,19 @@ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
 */
-export const LEVEL_ROLE_MAP = {
-    undefined: 'Default',
-    0: 'User',
-    50: 'Moderator',
-    100: 'Admin',
-};
+import { _t } from './languageHandler';
+
+export function levelRoleMap() {
+    return {
+        undefined: _t('Default'),
+        0: _t('User'),
+        50:  _t('Moderator'),
+        100: _t('Admin'),
+    };
+}
 
 export function textualPowerLevel(level, userDefault) {
+    const LEVEL_ROLE_MAP = this.levelRoleMap();
     if (LEVEL_ROLE_MAP[level]) {
         return LEVEL_ROLE_MAP[level] + (level !== undefined ? ` (${level})` : ` (${userDefault})`);
     } else {

src/ScalarMessaging.js

@@ -125,6 +125,7 @@ const SdkConfig = require('./SdkConfig');
 const MatrixClientPeg = require("./MatrixClientPeg");
 const MatrixEvent = require("matrix-js-sdk").MatrixEvent;
 const dis = require("./dispatcher");
+import { _t } from './languageHandler';
 
 function sendResponse(event, res) {
     const data = JSON.parse(JSON.stringify(event.data));
@@ -150,7 +151,7 @@ function inviteUser(event, roomId, userId) {
     console.log(`Received request to invite ${userId} into room ${roomId}`);
     const client = MatrixClientPeg.get();
     if (!client) {
-        sendError(event, "You need to be logged in.");
+        sendError(event, _t('You need to be logged in.'));
         return;
     }
     const room = client.getRoom(roomId);
@@ -170,7 +171,7 @@ function inviteUser(event, roomId, userId) {
             success: true,
         });
     }, function(err) {
-        sendError(event, "You need to be able to invite users to do that.", err);
+        sendError(event, _t('You need to be able to invite users to do that.'), err);
     });
 }
 
@@ -181,7 +182,7 @@ function setPlumbingState(event, roomId, status) {
     console.log(`Received request to set plumbing state to status "${status}" in room ${roomId}`);
     const client = MatrixClientPeg.get();
     if (!client) {
-        sendError(event, "You need to be logged in.");
+        sendError(event, _t('You need to be logged in.'));
         return;
     }
     client.sendStateEvent(roomId, "m.room.plumbing", { status : status }).done(() => {
@@ -189,7 +190,7 @@ function setPlumbingState(event, roomId, status) {
             success: true,
         });
     }, (err) => {
-        sendError(event, err.message ? err.message : "Failed to send request.", err);
+        sendError(event, err.message ? err.message : _t('Failed to send request.'), err);
     });
 }
 
@@ -197,7 +198,7 @@ function setBotOptions(event, roomId, userId) {
     console.log(`Received request to set options for bot ${userId} in room ${roomId}`);
     const client = MatrixClientPeg.get();
     if (!client) {
-        sendError(event, "You need to be logged in.");
+        sendError(event, _t('You need to be logged in.'));
         return;
     }
     client.sendStateEvent(roomId, "m.room.bot.options", event.data.content, "_" + userId).done(() => {
@@ -205,20 +206,20 @@ function setBotOptions(event, roomId, userId) {
             success: true,
         });
     }, (err) => {
-        sendError(event, err.message ? err.message : "Failed to send request.", err);
+        sendError(event, err.message ? err.message : _t('Failed to send request.'), err);
     });
 }
 
 function setBotPower(event, roomId, userId, level) {
     if (!(Number.isInteger(level) && level >= 0)) {
-        sendError(event, "Power level must be positive integer.");
+        sendError(event, _t('Power level must be positive integer.'));
         return;
     }
 
     console.log(`Received request to set power level to ${level} for bot ${userId} in room ${roomId}.`);
     const client = MatrixClientPeg.get();
     if (!client) {
-        sendError(event, "You need to be logged in.");
+        sendError(event, _t('You need to be logged in.'));
         return;
     }
 
@@ -235,7 +236,7 @@ function setBotPower(event, roomId, userId, level) {
                 success: true,
             });
         }, (err) => {
-            sendError(event, err.message ? err.message : "Failed to send request.", err);
+            sendError(event, err.message ? err.message : _t('Failed to send request.'), err);
         });
     });
 }
@@ -258,12 +259,12 @@ function botOptions(event, roomId, userId) {
 function returnStateEvent(event, roomId, eventType, stateKey) {
     const client = MatrixClientPeg.get();
     if (!client) {
-        sendError(event, "You need to be logged in.");
+        sendError(event, _t('You need to be logged in.'));
         return;
     }
     const room = client.getRoom(roomId);
     if (!room) {
-        sendError(event, "This room is not recognised.");
+        sendError(event, _t('This room is not recognised.'));
         return;
     }
     const stateEvent = room.currentState.getStateEvents(eventType, stateKey);
@@ -313,13 +314,13 @@ const onMessage = function(event) {
     const roomId = event.data.room_id;
     const userId = event.data.user_id;
     if (!roomId) {
-        sendError(event, "Missing room_id in request");
+        sendError(event, _t('Missing room_id in request'));
         return;
     }
     let promise = Promise.resolve(currentRoomId);
     if (!currentRoomId) {
         if (!currentRoomAlias) {
-            sendError(event, "Must be viewing a room");
+            sendError(event, _t('Must be viewing a room'));
             return;
         }
         // no room ID but there is an alias, look it up.
@@ -331,7 +332,7 @@ const onMessage = function(event) {
 
     promise.then((viewingRoomId) => {
         if (roomId !== viewingRoomId) {
-            sendError(event, "Room " + roomId + " not visible");
+            sendError(event, _t('Room %(roomId)s not visible', {roomId: roomId}));
             return;
         }
 
@@ -345,7 +346,7 @@ const onMessage = function(event) {
         }
 
         if (!userId) {
-            sendError(event, "Missing user_id in request");
+            sendError(event, _t('Missing user_id in request'));
             return;
         }
         switch (event.data.action) {
@@ -370,7 +371,7 @@ const onMessage = function(event) {
         }
     }, (err) => {
         console.error(err);
-        sendError(event, "Failed to lookup current room.");
+        sendError(event, _t('Failed to lookup current room') + '.');
     });
 };
 

src/Skinner.js

@@ -23,22 +23,28 @@ class Skinner {
         if (this.components === null) {
             throw new Error(
                 "Attempted to get a component before a skin has been loaded."+
-                "This is probably because either:"+
+                " This is probably because either:"+
                 " a) Your app has not called sdk.loadSkin(), or"+
-                " b) A component has called getComponent at the root level"
+                " b) A component has called getComponent at the root level",
             );
         }
-        var comp = this.components[name];
-        if (comp) {
-            return comp;
-        }
+        let comp = this.components[name];
         // XXX: Temporarily also try 'views.' as we're currently
         // leaving the 'views.' off views.
-        var comp = this.components['views.'+name];
-        if (comp) {
-            return comp;
+        if (!comp) {
+            comp = this.components['views.'+name];
         }
-        throw new Error("No such component: "+name);
+
+        if (!comp) {
+            throw new Error("No such component: "+name);
+        }
+
+        // components have to be functions.
+        const validType = typeof comp === 'function';
+        if (!validType) {
+            throw new Error(`Not a valid component: ${name}.`);
+        }
+        return comp;
     }
 
     load(skinObject) {

src/SlashCommands.js

@@ -18,6 +18,7 @@ import MatrixClientPeg from "./MatrixClientPeg";
 import dis from "./dispatcher";
 import Tinter from "./Tinter";
 import sdk from './index';
+import { _t } from './languageHandler';
 import Modal from './Modal';
 
 
@@ -41,7 +42,7 @@ class Command {
     }
 
     getUsage() {
-        return "Usage: " + this.getCommandWithArgs();
+        return _t('Usage') + ': ' + this.getCommandWithArgs();
     }
 }
 
@@ -68,8 +69,8 @@ const commands = {
         const ErrorDialog = sdk.getComponent('dialogs.ErrorDialog');
         // TODO Don't explain this away, actually show a search UI here.
         Modal.createDialog(ErrorDialog, {
-            title: "/ddg is not a command",
-            description: "To use it, just wait for autocomplete results to load and tab through them.",
+            title: _t('/ddg is not a command'),
+            description: _t('To use it, just wait for autocomplete results to load and tab through them.'),
         });
         return success();
     }),
@@ -143,7 +144,7 @@ const commands = {
 
                 dis.dispatch({
                     action: 'view_room',
-                    roomAlias: roomAlias,
+                    room_alias: roomAlias,
                     auto_join: true,
                 });
 
@@ -185,7 +186,7 @@ const commands = {
                     if (targetRoomId) { break; }
                 }
                 if (!targetRoomId) {
-                    return reject("Unrecognised room alias: " + roomAlias);
+                    return reject(_t("Unrecognised room alias:") +  ' ' + roomAlias);
                 }
             }
         }
@@ -302,14 +303,14 @@ const commands = {
 
                 const device = MatrixClientPeg.get().getStoredDevice(userId, deviceId);
                 if (!device) {
-                    return reject(`Unknown (user, device) pair: (${userId}, ${deviceId})`);
+                    return reject(_t(`Unknown (user, device) pair:`) + ` (${userId}, ${deviceId})`);
                 }
 
                 if (device.isVerified()) {
                     if (device.getFingerprint() === fingerprint) {
-                        return reject(`Device already verified!`);
+                        return reject(_t(`Device already verified!`));
                     } else {
-                        return reject(`WARNING: Device already verified, but keys do NOT MATCH!`);
+                        return reject(_t(`WARNING: Device already verified, but keys do NOT MATCH!`));
                     }
                 }
 
@@ -321,12 +322,15 @@ const commands = {
                     // Tell the user we verified everything!
                     const QuestionDialog = sdk.getComponent("dialogs.QuestionDialog");
                     Modal.createDialog(QuestionDialog, {
-                        title: "Verified key",
+                        title: _t("Verified key"),
                         description: (
                             <div>
                                 <p>
-                                    The signing key you provided matches the signing key you received
-                                    from { userId }'s device { deviceId }. Device marked as verified.
+                                {
+                                    _t("The signing key you provided matches the signing key you received " +
+                                    "from %(userId)s's device %(deviceId)s. Device marked as verified.",
+                                    {userId: userId, deviceId: deviceId})
+                                }
                                 </p>
                             </div>
                         ),
@@ -335,9 +339,13 @@ const commands = {
 
                     return success();
                 } else {
-                    return reject(`WARNING: KEY VERIFICATION FAILED! The signing key for ${userId} and device
-                            ${deviceId} is "${device.getFingerprint()}" which does not match the provided key
-                            "${fingerprint}". This could mean your communications are being intercepted!`);
+                    const fprint = device.getFingerprint();
+                    return reject(
+                        _t('WARNING: KEY VERIFICATION FAILED! The signing key for %(userId)s and device' +
+                           ' %(deviceId)s is "%(fprint)s" which does not match the provided key' +
+                           ' "%(fingerprint)s". This could mean your communications are being intercepted!',
+                            {deviceId: deviceId, fprint: fprint, userId: userId, fingerprint: fingerprint})
+                    );
                 }
             }
         }
@@ -382,7 +390,7 @@ module.exports = {
             if (commands[cmd]) {
                 return commands[cmd].run(roomId, args);
             } else {
-                return reject("Unrecognised command: " + input);
+                return reject(_t("Unrecognised command:") + ' ' + input);
             }
         }
         return null; // not a command

src/TextForEvent.js

@@ -16,7 +16,7 @@ limitations under the License.
 
 var MatrixClientPeg = require("./MatrixClientPeg");
 var CallHandler = require("./CallHandler");
-
+import { _t } from './languageHandler';
 import * as Roles from './Roles';
 
 function textForMemberEvent(ev) {
@@ -25,45 +25,45 @@ function textForMemberEvent(ev) {
     var targetName = ev.target ? ev.target.name : ev.getStateKey();
     var ConferenceHandler = CallHandler.getConferenceHandler();
     var reason = ev.getContent().reason ? (
-        " Reason: " + ev.getContent().reason
+        _t('Reason') + ': ' + ev.getContent().reason
     ) : "";
     switch (ev.getContent().membership) {
         case 'invite':
             var threePidContent = ev.getContent().third_party_invite;
             if (threePidContent) {
                 if (threePidContent.display_name) {
-                    return targetName + " accepted the invitation for " +
-                        threePidContent.display_name + ".";
+                    return _t('%(targetName)s accepted the invitation for %(displayName)s.', {targetName: targetName, displayName: threePidContent.display_name});
                 } else {
-                    return targetName + " accepted an invitation.";
+                    return _t('%(targetName)s accepted an invitation.', {targetName: targetName});
                 }
             }
             else {
                 if (ConferenceHandler && ConferenceHandler.isConferenceUser(ev.getStateKey())) {
-                    return senderName + " requested a VoIP conference";
+                    return _t('%(senderName)s requested a VoIP conference.', {senderName: senderName});
                 }
                 else {
-                    return senderName + " invited " + targetName + ".";
+                    return _t('%(senderName)s invited %(targetName)s.', {senderName: senderName, targetName: targetName});
                 }
             }
         case 'ban':
-            return senderName + " banned " + targetName + "." + reason;
+            return _t(
+                '%(senderName)s banned %(targetName)s.',
+                {senderName: senderName, targetName: targetName}
+            ) + ' ' + reason;
         case 'join':
             if (ev.getPrevContent() && ev.getPrevContent().membership == 'join') {
                 if (ev.getPrevContent().displayname && ev.getContent().displayname && ev.getPrevContent().displayname != ev.getContent().displayname) {
-                    return ev.getSender() + " changed their display name from " +
-                        ev.getPrevContent().displayname + " to " +
-                        ev.getContent().displayname;
+                    return _t('%(senderName)s changed their display name from %(oldDisplayName)s to %(displayName)s.', {senderName: ev.getSender(), oldDisplayName: ev.getPrevContent().displayname, displayName: ev.getContent().displayname});
                 } else if (!ev.getPrevContent().displayname && ev.getContent().displayname) {
-                    return ev.getSender() + " set their display name to " + ev.getContent().displayname;
+                    return _t('%(senderName)s set their display name to %(displayName)s.', {senderName: ev.getSender(), displayName: ev.getContent().displayname});
                 } else if (ev.getPrevContent().displayname && !ev.getContent().displayname) {
-                    return ev.getSender() + " removed their display name (" + ev.getPrevContent().displayname + ")";
+                    return _t('%(senderName)s removed their display name (%(oldDisplayName)s).', {senderName: ev.getSender(), oldDisplayName: ev.getPrevContent().displayname});
                 } else if (ev.getPrevContent().avatar_url && !ev.getContent().avatar_url) {
-                    return senderName + " removed their profile picture";
+                    return _t('%(senderName)s removed their profile picture.', {senderName: senderName});
                 } else if (ev.getPrevContent().avatar_url && ev.getContent().avatar_url && ev.getPrevContent().avatar_url != ev.getContent().avatar_url) {
-                    return senderName + " changed their profile picture";
+                    return _t('%(senderName)s changed their profile picture.', {senderName: senderName});
                 } else if (!ev.getPrevContent().avatar_url && ev.getContent().avatar_url) {
-                    return senderName + " set a profile picture";
+                    return _t('%(senderName)s set a profile picture.', {senderName: senderName});
                 } else {
                     // suppress null rejoins
                     return '';
@@ -71,49 +71,57 @@ function textForMemberEvent(ev) {
             } else {
                 if (!ev.target) console.warn("Join message has no target! -- " + ev.getContent().state_key);
                 if (ConferenceHandler && ConferenceHandler.isConferenceUser(ev.getStateKey())) {
-                    return "VoIP conference started";
+                    return _t('VoIP conference started.');
                 }
                 else {
-                    return targetName + " joined the room.";
+                    return _t('%(targetName)s joined the room.', {targetName: targetName});
                 }
             }
         case 'leave':
             if (ev.getSender() === ev.getStateKey()) {
                 if (ConferenceHandler && ConferenceHandler.isConferenceUser(ev.getStateKey())) {
-                    return "VoIP conference finished";
+                    return _t('VoIP conference finished.');
                 }
                 else if (ev.getPrevContent().membership === "invite") {
-                    return targetName + " rejected the invitation.";
+                    return _t('%(targetName)s rejected the invitation.', {targetName: targetName});
                 }
                 else {
-                    return targetName + " left the room.";
+                    return _t('%(targetName)s left the room.', {targetName: targetName});
                 }
             }
             else if (ev.getPrevContent().membership === "ban") {
-                return senderName + " unbanned " + targetName + ".";
+                return _t('%(senderName)s unbanned %(targetName)s.', {senderName: senderName, targetName: targetName});
             }
             else if (ev.getPrevContent().membership === "join") {
-                return senderName + " kicked " + targetName + "." + reason;
+                return _t(
+                    '%(senderName)s kicked %(targetName)s.',
+                    {senderName: senderName, targetName: targetName}
+                ) + ' ' + reason;
             }
             else if (ev.getPrevContent().membership === "invite") {
-                return senderName + " withdrew " + targetName + "'s invitation." + reason;
+                return _t(
+                    '%(senderName)s withdrew %(targetName)s\'s invitation.',
+                    {senderName: senderName, targetName: targetName}
+                ) + ' ' + reason;
             }
             else {
-                return targetName + " left the room.";
+                return _t('%(targetName)s left the room.', {targetName: targetName});
             }
     }
 }
 
 function textForTopicEvent(ev) {
     var senderDisplayName = ev.sender && ev.sender.name ? ev.sender.name : ev.getSender();
-
-    return senderDisplayName + ' changed the topic to "' + ev.getContent().topic + '"';
+    return _t('%(senderDisplayName)s changed the topic to "%(topic)s".', {senderDisplayName: senderDisplayName, topic: ev.getContent().topic});
 }
 
 function textForRoomNameEvent(ev) {
     var senderDisplayName = ev.sender && ev.sender.name ? ev.sender.name : ev.getSender();
     
-    return senderDisplayName + ' changed the room name to "' + ev.getContent().name + '"';
+    if (!ev.getContent().name || ev.getContent().name.trim().length === 0) {
+        return _t('%(senderDisplayName)s removed the room name.', {senderDisplayName: senderDisplayName});
+    }
+    return _t('%(senderDisplayName)s changed the room name to %(roomName)s.', {senderDisplayName: senderDisplayName, roomName: ev.getContent().name});
 }
 
 function textForMessageEvent(ev) {
@@ -122,66 +130,66 @@ function textForMessageEvent(ev) {
     if (ev.getContent().msgtype === "m.emote") {
         message = "* " + senderDisplayName + " " + message;
     } else if (ev.getContent().msgtype === "m.image") {
-        message = senderDisplayName + " sent an image.";
+        message = _t('%(senderDisplayName)s sent an image.', {senderDisplayName: senderDisplayName});
     }
     return message;
 }
 
 function textForCallAnswerEvent(event) {
-    var senderName = event.sender ? event.sender.name : "Someone";
-    var supported = MatrixClientPeg.get().supportsVoip() ? "" : " (not supported by this browser)";
-    return senderName + " answered the call." + supported;
+    var senderName = event.sender ? event.sender.name : _t('Someone');
+    var supported = MatrixClientPeg.get().supportsVoip() ? "" : _t('(not supported by this browser)');
+    return _t('%(senderName)s answered the call.', {senderName: senderName}) + ' ' + supported;
 }
 
 function textForCallHangupEvent(event) {
-    var senderName = event.sender ? event.sender.name : "Someone";
-    var supported = MatrixClientPeg.get().supportsVoip() ? "" : " (not supported by this browser)";
-    return senderName + " ended the call." + supported;
+    var senderName = event.sender ? event.sender.name : _t('Someone');
+    var supported = MatrixClientPeg.get().supportsVoip() ? "" : _t('(not supported by this browser)');
+    return _t('%(senderName)s ended the call.', {senderName: senderName}) + ' ' + supported;
 }
 
 function textForCallInviteEvent(event) {
-    var senderName = event.sender ? event.sender.name : "Someone";
+    var senderName = event.sender ? event.sender.name : _t('Someone');
     // FIXME: Find a better way to determine this from the event?
     var type = "voice";
     if (event.getContent().offer && event.getContent().offer.sdp &&
             event.getContent().offer.sdp.indexOf('m=video') !== -1) {
         type = "video";
     }
-    var supported = MatrixClientPeg.get().supportsVoip() ? "" : " (not supported by this browser)";
-    return senderName + " placed a " + type + " call." + supported;
+    var supported = MatrixClientPeg.get().supportsVoip() ? "" : _t('(not supported by this browser)');
+    return _t('%(senderName)s placed a %(callType)s call.', {senderName: senderName, callType: type}) + ' ' + supported;
 }
 
 function textForThreePidInviteEvent(event) {
     var senderName = event.sender ? event.sender.name : event.getSender();
-    return senderName + " sent an invitation to " + event.getContent().display_name +
-     " to join the room.";
+    return _t('%(senderName)s sent an invitation to %(targetDisplayName)s to join the room.', {senderName: senderName, targetDisplayName: event.getContent().display_name});
 }
 
 function textForHistoryVisibilityEvent(event) {
     var senderName = event.sender ? event.sender.name : event.getSender();
     var vis = event.getContent().history_visibility;
-    var text = senderName + " made future room history visible to ";
+    // XXX: This i18n just isn't going to work for languages with different sentence structure.
+    var text = _t('%(senderName)s made future room history visible to', {senderName: senderName}) + ' ';
     if (vis === "invited") {
-        text += "all room members, from the point they are invited.";
+        text += _t('all room members, from the point they are invited') + '.';
     }
     else if (vis === "joined") {
-        text += "all room members, from the point they joined.";
+        text += _t('all room members, from the point they joined') + '.';
     }
     else if (vis === "shared") {
-        text += "all room members.";
+        text += _t('all room members') + '.';
     }
     else if (vis === "world_readable") {
-        text += "anyone.";
+        text += _t('anyone') + '.';
     }
     else {
-        text += " unknown (" + vis + ")";
+        text += ' ' + _t('unknown') + ' (' + vis + ').';
     }
     return text;
 }
 
 function textForEncryptionEvent(event) {
     var senderName = event.sender ? event.sender.name : event.getSender();
-    return senderName + " turned on end-to-end encryption (algorithm " + event.getContent().algorithm + ")";
+    return _t('%(senderName)s turned on end-to-end encryption (algorithm %(algorithm)s).', {senderName: senderName, algorithm: event.getContent().algorithm});
 }
 
 // Currently will only display a change if a user's power level is changed
@@ -204,6 +212,7 @@ function textForPowerEvent(event) {
         }
     );
     let diff = [];
+    // XXX: This is also surely broken for i18n
     users.forEach((userId) => {
         // Previous power level
         const from = event.getPrevContent().users[userId];
@@ -211,16 +220,21 @@ function textForPowerEvent(event) {
         const to = event.getContent().users[userId];
         if (to !== from) {
             diff.push(
-                userId +
-                ' from ' + Roles.textualPowerLevel(from, userDefault) +
-                ' to ' + Roles.textualPowerLevel(to, userDefault)
+            	_t('%(userId)s from %(fromPowerLevel)s to %(toPowerLevel)s', {
+                    userId: userId,
+                    fromPowerLevel: Roles.textualPowerLevel(from, userDefault),
+                    toPowerLevel: Roles.textualPowerLevel(to, userDefault)
+                })
             );
         }
     });
     if (!diff.length) {
         return '';
     }
-    return senderName + ' changed the power level of ' + diff.join(', ');
+    return _t('%(senderName)s changed the power level of %(powerLevelDiffText)s.', {
+        senderName: senderName,
+        powerLevelDiffText: diff.join(", ")
+    });
 }
 
 var handlers = {

src/UnknownDeviceErrorHandler.js

@@ -22,7 +22,7 @@ let isDialogOpen = false;
 
 const onAction = function(payload) {
     if (payload.action === 'unknown_device_error' && !isDialogOpen) {
-        var UnknownDeviceDialog = sdk.getComponent("dialogs.UnknownDeviceDialog");
+        const UnknownDeviceDialog = sdk.getComponent('dialogs.UnknownDeviceDialog');
         isDialogOpen = true;
         Modal.createDialog(UnknownDeviceDialog, {
             devices: payload.err.devices,
@@ -33,17 +33,17 @@ const onAction = function(payload) {
                 // https://github.com/vector-im/riot-web/issues/3148
                 console.log('UnknownDeviceDialog closed with '+r);
             },
-        }, "mx_Dialog_unknownDevice");
+        }, 'mx_Dialog_unknownDevice');
     }
-}
+};
 
 let ref = null;
 
-export function startListening () {
+export function startListening() {
     ref = dis.register(onAction);
 }
 
-export function stopListening () {
+export function stopListening() {
     if (ref) {
         dis.unregister(ref);
         ref = null;

src/UserSettingsStore.js

@@ -14,24 +14,29 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-'use strict';
 import q from 'q';
 import MatrixClientPeg from './MatrixClientPeg';
 import Notifier from './Notifier';
+import { _t } from './languageHandler';
 
 /*
  * TODO: Make things use this. This is all WIP - see UserSettings.js for usage.
  */
 
-module.exports = {
+export default {
     LABS_FEATURES: [
         {
-            name: 'New Composer & Autocomplete',
+            name: "-",
             id: 'rich_text_editor',
             default: false,
         },
     ],
 
+    // horrible but it works. The locality makes this somewhat more palatable.
+    doTranslations: function() {
+        this.LABS_FEATURES[0].name = _t("New Composer & Autocomplete");
+    },
+
     loadProfileInfo: function() {
         const cli = MatrixClientPeg.get();
         return cli.getProfileInfo(cli.credentials.userId);

src/WhoIsTyping.js

@@ -15,6 +15,7 @@ limitations under the License.
 */
 
 var MatrixClientPeg = require("./MatrixClientPeg");
+import { _t } from './languageHandler';
 
 module.exports = {
     usersTypingApartFromMe: function(room) {
@@ -56,18 +57,18 @@ module.exports = {
         if (whoIsTyping.length == 0) {
             return '';
         } else if (whoIsTyping.length == 1) {
-            return whoIsTyping[0].name + ' is typing';
+            return _t('%(displayName)s is typing', {displayName: whoIsTyping[0].name});
         }
         const names = whoIsTyping.map(function(m) {
             return m.name;
         });
-        if (othersCount) {
-            const other = ' other' + (othersCount > 1 ? 's' : '');
-            return names.slice(0, limit - 1).join(', ') + ' and ' +
-                othersCount + other + ' are typing';
+        if (othersCount==1) {
+            return _t('%(names)s and one other are typing', {names: names.slice(0, limit - 1).join(', ')});
+        } else if (othersCount>1) {
+        	return _t('%(names)s and %(count)s others are typing', {names: names.slice(0, limit - 1).join(', '), count: othersCount});
         } else {
             const lastPerson = names.pop();
-            return names.join(', ') + ' and ' + lastPerson + ' are typing';
+            return _t('%(names)s and %(lastPerson)s are typing', {names: names.join(', '), lastPerson: lastPerson});
         }
     }
 };

src/async-components/views/dialogs/EncryptedEventDialog.js

@@ -15,6 +15,7 @@ limitations under the License.
 */
 
 var React = require("react");
+import { _t } from '../../../languageHandler';
 var sdk = require('../../../index');
 var MatrixClientPeg = require("../../../MatrixClientPeg");
 
@@ -78,33 +79,33 @@ module.exports = React.createClass({
     _renderDeviceInfo: function() {
         var device = this.state.device;
         if (!device) {
-            return (<i>unknown device</i>);
+            return (<i>{ _t('unknown device') }</i>);
         }
 
-        var verificationStatus = (<b>NOT verified</b>);
+        var verificationStatus = (<b>{ _t('NOT verified') }</b>);
         if (device.isBlocked()) {
-            verificationStatus = (<b>Blacklisted</b>);
+            verificationStatus = (<b>{ _t('Blacklisted') }</b>);
         } else if (device.isVerified()) {
-            verificationStatus = "verified";
+            verificationStatus = _t('verified');
         }
 
         return (
             <table>
                 <tbody>
                     <tr>
-                        <td>Name</td>
+                        <td>{ _t('Name') }</td>
                         <td>{ device.getDisplayName() }</td>
                     </tr>
                     <tr>
-                        <td>Device ID</td>
+                        <td>{ _t('Device ID') }</td>
                         <td><code>{ device.deviceId }</code></td>
                     </tr>
                     <tr>
-                        <td>Verification</td>
+                        <td>{ _t('Verification') }</td>
                         <td>{ verificationStatus }</td>
                     </tr>
                     <tr>
-                        <td>Ed25519 fingerprint</td>
+                        <td>{ _t('Ed25519 fingerprint') }</td>
                         <td><code>{device.getFingerprint()}</code></td>
                     </tr>
                 </tbody>
@@ -119,32 +120,32 @@ module.exports = React.createClass({
             <table>
                 <tbody>
                     <tr>
-                        <td>User ID</td>
+                        <td>{ _t('User ID') }</td>
                         <td>{ event.getSender() }</td>
                     </tr>
                     <tr>
-                        <td>Curve25519 identity key</td>
-                        <td><code>{ event.getSenderKey() || <i>none</i> }</code></td>
+                        <td>{ _t('Curve25519 identity key') }</td>
+                        <td><code>{ event.getSenderKey() || <i>{ _t('none') }</i> }</code></td>
                     </tr>
                     <tr>
-                        <td>Claimed Ed25519 fingerprint key</td>
-                        <td><code>{ event.getKeysClaimed().ed25519 || <i>none</i> }</code></td>
+                        <td>{ _t('Claimed Ed25519 fingerprint key') }</td>
+                        <td><code>{ event.getKeysClaimed().ed25519 || <i>{ _t('none') }</i> }</code></td>
                     </tr>
                     <tr>
-                        <td>Algorithm</td>
-                        <td>{ event.getWireContent().algorithm || <i>unencrypted</i> }</td>
+                        <td>{ _t('Algorithm') }</td>
+                        <td>{ event.getWireContent().algorithm || <i>{ _t('unencrypted') }</i> }</td>
                     </tr>
                 {
                     event.getContent().msgtype === 'm.bad.encrypted' ? (
                     <tr>
-                        <td>Decryption error</td>
+                        <td>{ _t('Decryption error') }</td>
                         <td>{ event.getContent().body }</td>
                     </tr>
                     ) : null
                 }
                     <tr>
-                        <td>Session ID</td>
-                        <td><code>{ event.getWireContent().session_id || <i>none</i> }</code></td>
+                        <td>{ _t('Session ID') }</td>
+                        <td><code>{ event.getWireContent().session_id || <i>{ _t('none') }</i> }</code></td>
                     </tr>
                 </tbody>
             </table>
@@ -166,18 +167,18 @@ module.exports = React.createClass({
         return (
             <div className="mx_EncryptedEventDialog" onKeyDown={ this.onKeyDown }>
                 <div className="mx_Dialog_title">
-                    End-to-end encryption information
+                    { _t('End-to-end encryption information') }
                 </div>
                 <div className="mx_Dialog_content">
-                    <h4>Event information</h4>
+                    <h4>{ _t('Event information') }</h4>
                     {this._renderEventInfo()}
 
-                    <h4>Sender device information</h4>
+                    <h4>{ _t('Sender device information') }</h4>
                     {this._renderDeviceInfo()}
                 </div>
                 <div className="mx_Dialog_buttons">
                     <button className="mx_Dialog_primary" onClick={ this.props.onFinished } autoFocus={ true }>
-                        OK
+                        { _t('OK') }
                     </button>
                     {buttons}
                 </div>

src/async-components/views/dialogs/ExportE2eKeysDialog.js

@@ -16,6 +16,7 @@ limitations under the License.
 
 import FileSaver from 'file-saver';
 import React from 'react';
+import { _t } from '../../../languageHandler';
 
 import * as Matrix from 'matrix-js-sdk';
 import * as MegolmExportEncryption from '../../../utils/MegolmExportEncryption';
@@ -52,11 +53,11 @@ export default React.createClass({
 
         const passphrase = this.refs.passphrase1.value;
         if (passphrase !== this.refs.passphrase2.value) {
-            this.setState({errStr: 'Passphrases must match'});
+            this.setState({errStr: _t('Passphrases must match')});
             return false;
         }
         if (!passphrase) {
-            this.setState({errStr: 'Passphrase must not be empty'});
+            this.setState({errStr: _t('Passphrase must not be empty')});
             return false;
         }
 
@@ -109,24 +110,28 @@ export default React.createClass({
         return (
             <BaseDialog className='mx_exportE2eKeysDialog'
                 onFinished={this.props.onFinished}
-                title="Export room keys"
+                title={_t("Export room keys")}
             >
                 <form onSubmit={this._onPassphraseFormSubmit}>
                     <div className="mx_Dialog_content">
                         <p>
-                            This process allows you to export the keys for messages
-                            you have received in encrypted rooms to a local file. You
-                            will then be able to import the file into another Matrix
-                            client in the future, so that client will also be able to
-                            decrypt these messages.
+                            { _t(
+                                'This process allows you to export the keys for messages ' +
+                                'you have received in encrypted rooms to a local file. You ' +
+                                'will then be able to import the file into another Matrix ' +
+                                'client in the future, so that client will also be able to ' +
+                                'decrypt these messages.'
+                            ) }
                         </p>
                         <p>
-                            The exported file will allow anyone who can read it to decrypt
-                            any encrypted messages that you can see, so you should be
-                            careful to keep it secure. To help with this, you should enter
-                            a passphrase below, which will be used to encrypt the exported
-                            data. It will only be possible to import the data by using the
-                            same passphrase.
+                            { _t(
+                                'The exported file will allow anyone who can read it to decrypt ' +
+                                'any encrypted messages that you can see, so you should be ' +
+                                'careful to keep it secure. To help with this, you should enter ' +
+                                'a passphrase below, which will be used to encrypt the exported ' +
+                                'data. It will only be possible to import the data by using the ' +
+                                'same passphrase.'
+                            ) }
                         </p>
                         <div className='error'>
                             {this.state.errStr}
@@ -135,7 +140,7 @@ export default React.createClass({
                             <div className='mx_E2eKeysDialog_inputRow'>
                                 <div className='mx_E2eKeysDialog_inputLabel'>
                                     <label htmlFor='passphrase1'>
-                                        Enter passphrase
+                                        {_t("Enter passphrase")}
                                     </label>
                                 </div>
                                 <div className='mx_E2eKeysDialog_inputCell'>
@@ -148,7 +153,7 @@ export default React.createClass({
                             <div className='mx_E2eKeysDialog_inputRow'>
                                 <div className='mx_E2eKeysDialog_inputLabel'>
                                     <label htmlFor='passphrase2'>
-                                        Confirm passphrase
+                                        {_t("Confirm passphrase")}
                                     </label>
                                 </div>
                                 <div className='mx_E2eKeysDialog_inputCell'>
@@ -161,11 +166,11 @@ export default React.createClass({
                         </div>
                     </div>
                     <div className='mx_Dialog_buttons'>
-                        <input className='mx_Dialog_primary' type='submit' value='Export'
+                        <input className='mx_Dialog_primary' type='submit' value={_t('Export')}
                              disabled={disableForm}
                         />
                         <button onClick={this._onCancelClick} disabled={disableForm}>
-                            Cancel
+                            {_t("Cancel")}
                         </button>
                     </div>
                 </form>

src/async-components/views/dialogs/ImportE2eKeysDialog.js

@@ -19,6 +19,7 @@ import React from 'react';
 import * as Matrix from 'matrix-js-sdk';
 import * as MegolmExportEncryption from '../../../utils/MegolmExportEncryption';
 import sdk from '../../../index';
+import { _t } from '../../../languageHandler';
 
 function readFileAsArrayBuffer(file) {
     return new Promise((resolve, reject) => {
@@ -112,20 +113,23 @@ export default React.createClass({
         return (
             <BaseDialog className='mx_importE2eKeysDialog'
                 onFinished={this.props.onFinished}
-                title="Import room keys"
+                title={_t("Import room keys")}
             >
                 <form onSubmit={this._onFormSubmit}>
                     <div className="mx_Dialog_content">
                         <p>
-                            This process allows you to import encryption keys
-                            that you had previously exported from another Matrix
-                            client. You will then be able to decrypt any
-                            messages that the other client could decrypt.
+                            { _t(
+                                'This process allows you to import encryption keys ' +
+                                'that you had previously exported from another Matrix ' +
+                                'client. You will then be able to decrypt any ' +
+                                'messages that the other client could decrypt.'
+                            ) }
                         </p>
                         <p>
-                            The export file will be protected with a passphrase.
-                            You should enter the passphrase here, to decrypt the
-                            file.
+                            { _t(
+                                'The export file will be protected with a passphrase. ' +
+                                'You should enter the passphrase here, to decrypt the file.'
+                            ) }
                         </p>
                         <div className='error'>
                             {this.state.errStr}
@@ -134,7 +138,7 @@ export default React.createClass({
                             <div className='mx_E2eKeysDialog_inputRow'>
                                <div className='mx_E2eKeysDialog_inputLabel'>
                                    <label htmlFor='importFile'>
-                                       File to import
+                                       {_t("File to import")}
                                    </label>
                                </div>
                                <div className='mx_E2eKeysDialog_inputCell'>
@@ -147,7 +151,7 @@ export default React.createClass({
                             <div className='mx_E2eKeysDialog_inputRow'>
                                <div className='mx_E2eKeysDialog_inputLabel'>
                                    <label htmlFor='passphrase'>
-                                       Enter passphrase
+                                       {_t("Enter passphrase")}
                                    </label>
                                </div>
                                <div className='mx_E2eKeysDialog_inputCell'>
@@ -160,11 +164,11 @@ export default React.createClass({
                         </div>
                     </div>
                     <div className='mx_Dialog_buttons'>
-                        <input className='mx_Dialog_primary' type='submit' value='Import'
+                        <input className='mx_Dialog_primary' type='submit' value={_t('Import')}
                             disabled={!this.state.enableSubmit || disableForm}
                         />
                         <button onClick={this._onCancelClick} disabled={disableForm}>
-                            Cancel
+                            {_t("Cancel")}
                         </button>
                     </div>
                 </form>

src/autocomplete/AutocompleteProvider.js

@@ -1,3 +1,20 @@
+/*
+Copyright 2016 Aviral Dasgupta
+Copyright 2017 Vector Creations Ltd
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
 import React from 'react';
 import type {Completion, SelectionRange} from './Autocompleter';
 

src/autocomplete/Autocompleter.js

@@ -1,3 +1,19 @@
+/*
+Copyright 2016 Aviral Dasgupta
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
 // @flow
 
 import type {Component} from 'react';

src/autocomplete/CommandProvider.js

@@ -1,8 +1,27 @@
+/*
+Copyright 2016 Aviral Dasgupta
+Copyright 2017 Vector Creations Ltd
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
 import React from 'react';
+import { _t } from '../languageHandler';
 import AutocompleteProvider from './AutocompleteProvider';
 import Fuse from 'fuse.js';
 import {TextualCompletion} from './Components';
 
+// Warning: Since the description string will be translated in _t(result.description), all these strings below must be in i18n/strings/en_EN.json file
 const COMMANDS = [
     {
         command: '/me',
@@ -43,10 +62,10 @@ const COMMANDS = [
         command: '/ddg',
         args: '<query>',
         description: 'Searches DuckDuckGo for results',
-    }
+    },
 ];
 
-let COMMAND_RE = /(^\/\w*)/g;
+const COMMAND_RE = /(^\/\w*)/g;
 
 let instance = null;
 
@@ -60,15 +79,15 @@ export default class CommandProvider extends AutocompleteProvider {
 
     async getCompletions(query: string, selection: {start: number, end: number}) {
         let completions = [];
-        let {command, range} = this.getCurrentCommand(query, selection);
+        const {command, range} = this.getCurrentCommand(query, selection);
         if (command) {
-            completions = this.fuse.search(command[0]).map(result => {
+            completions = this.fuse.search(command[0]).map((result) => {
                 return {
                     completion: result.command + ' ',
                     component: (<TextualCompletion
                         title={result.command}
                         subtitle={result.args}
-                        description={result.description}
+                        description={ _t(result.description) }
                         />),
                     range,
                 };
@@ -78,12 +97,11 @@ export default class CommandProvider extends AutocompleteProvider {
     }
 
     getName() {
-        return '*️⃣ Commands';
+        return '*️⃣ ' + _t('Commands');
     }
 
     static getInstance(): CommandProvider {
-        if (instance == null)
-            {instance = new CommandProvider();}
+        if (instance === null) instance = new CommandProvider();
 
         return instance;
     }

src/autocomplete/Components.js

@@ -1,3 +1,19 @@
+/*
+Copyright 2016 Aviral Dasgupta
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
 import React from 'react';
 import ReactDOM from 'react-dom';
 import classNames from 'classnames';

src/autocomplete/DuckDuckGoProvider.js

@@ -1,4 +1,22 @@
+/*
+Copyright 2016 Aviral Dasgupta
+Copyright 2017 Vector Creations Ltd
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
 import React from 'react';
+import { _t } from '../languageHandler';
 import AutocompleteProvider from './AutocompleteProvider';
 import 'whatwg-fetch';
 
@@ -75,7 +93,7 @@ export default class DuckDuckGoProvider extends AutocompleteProvider {
     }
 
     getName() {
-        return '🔍 Results from DuckDuckGo';
+        return '🔍 ' + _t('Results from DuckDuckGo');
     }
 
     static getInstance(): DuckDuckGoProvider {

src/autocomplete/EmojiProvider.js

@@ -1,4 +1,22 @@
+/*
+Copyright 2016 Aviral Dasgupta
+Copyright 2017 Vector Creations Ltd
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
 import React from 'react';
+import { _t } from '../languageHandler';
 import AutocompleteProvider from './AutocompleteProvider';
 import {emojioneList, shortnameToImage, shortnameToUnicode} from 'emojione';
 import Fuse from 'fuse.js';
@@ -39,7 +57,7 @@ export default class EmojiProvider extends AutocompleteProvider {
     }
 
     getName() {
-        return '😃 Emoji';
+        return '😃 ' + _t('Emoji');
     }
 
     static getInstance() {

src/autocomplete/RoomProvider.js

@@ -1,4 +1,22 @@
+/*
+Copyright 2016 Aviral Dasgupta
+Copyright 2017 Vector Creations Ltd
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
 import React from 'react';
+import { _t } from '../languageHandler';
 import AutocompleteProvider from './AutocompleteProvider';
 import MatrixClientPeg from '../MatrixClientPeg';
 import Fuse from 'fuse.js';
@@ -50,7 +68,7 @@ export default class RoomProvider extends AutocompleteProvider {
     }
 
     getName() {
-        return '💬 Rooms';
+        return '💬 ' + _t('Rooms');
     }
 
     static getInstance() {

src/autocomplete/UserProvider.js

@@ -1,4 +1,22 @@
+/*
+Copyright 2016 Aviral Dasgupta
+Copyright 2017 Vector Creations Ltd
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
 import React from 'react';
+import { _t } from '../languageHandler';
 import AutocompleteProvider from './AutocompleteProvider';
 import Q from 'q';
 import Fuse from 'fuse.js';
@@ -51,7 +69,7 @@ export default class UserProvider extends AutocompleteProvider {
     }
 
     getName() {
-        return '👥 Users';
+        return '👥 ' + _t('Users');
     }
 
     setUserList(users) {

src/components/structures/CreateRoom.js

@@ -16,15 +16,16 @@ limitations under the License.
 
 'use strict';
 
-var React = require("react");
-var MatrixClientPeg = require("../../MatrixClientPeg");
-var PresetValues = {
+import React from 'react';
+import q from 'q';
+import { _t } from '../../languageHandler';
+import sdk from '../../index';
+import MatrixClientPeg from '../../MatrixClientPeg';
+const PresetValues = {
     PrivateChat: "private_chat",
     PublicChat: "public_chat",
     Custom: "custom",
 };
-var q = require('q');
-var sdk = require('../../index');
 
 module.exports = React.createClass({
     displayName: 'CreateRoom',
@@ -231,7 +232,7 @@ module.exports = React.createClass({
             if (curr_phase == this.phases.ERROR) {
                 error_box = (
                     <div className="mx_Error">
-                        An error occured: {this.state.error_string}
+                        {_t('An error occured: %(error_string)s', {error_string: this.state.error_string})}
                     </div>
                 );
             }
@@ -248,27 +249,27 @@ module.exports = React.createClass({
             <div className="mx_CreateRoom">
                 <SimpleRoomHeader title="CreateRoom" collapsedRhs={ this.props.collapsedRhs }/>
                 <div className="mx_CreateRoom_body">
-                    <input type="text" ref="room_name" value={this.state.room_name} onChange={this.onNameChange} placeholder="Name"/> <br />
-                    <textarea className="mx_CreateRoom_description" ref="topic" value={this.state.topic} onChange={this.onTopicChange} placeholder="Topic"/> <br />
+                    <input type="text" ref="room_name" value={this.state.room_name} onChange={this.onNameChange} placeholder={_t('Name')}/> <br />
+                    <textarea className="mx_CreateRoom_description" ref="topic" value={this.state.topic} onChange={this.onTopicChange} placeholder={_t('Topic')}/> <br />
                     <RoomAlias ref="alias" alias={this.state.alias} homeserver={ domain } onChange={this.onAliasChanged}/> <br />
                     <UserSelector ref="user_selector" selected_users={this.state.invited_users} onChange={this.onInviteChanged}/> <br />
                     <Presets ref="presets" onChange={this.onPresetChanged} preset={this.state.preset}/> <br />
                     <div>
                         <label>
                             <input type="checkbox" ref="is_private" checked={this.state.is_private} onChange={this.onPrivateChanged}/>
-                            Make this room private
+                            {_t('Make this room private')}
                         </label>
                     </div>
                     <div>
                         <label>
                             <input type="checkbox" ref="share_history" checked={this.state.share_history} onChange={this.onShareHistoryChanged}/>
-                            Share message history with new users
+                            {_t('Share message history with new users')}
                         </label>
                     </div>
                     <div className="mx_CreateRoom_encrypt">
                         <label>
                             <input type="checkbox" ref="encrypt" checked={this.state.encrypt} onChange={this.onEncryptChanged}/>
-                            Encrypt room
+                            {_t('Encrypt room')}
                         </label>
                     </div>
                     <div>

src/components/structures/FilePanel.js

@@ -14,13 +14,12 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-var React = require('react');
-var ReactDOM = require("react-dom");
+import React from 'react';
 
-var Matrix = require("matrix-js-sdk");
-var sdk = require('../../index');
-var MatrixClientPeg = require("../../MatrixClientPeg");
-var dis = require("../../dispatcher");
+import Matrix from 'matrix-js-sdk';
+import sdk from '../../index';
+import MatrixClientPeg from '../../MatrixClientPeg';
+import { _t } from '../../languageHandler';
 
 /*
  * Component which shows the filtered file using a TimelinePanel
@@ -96,7 +95,7 @@ var FilePanel = React.createClass({
             </div>;
         } else if (this.noRoom) {
             return <div className="mx_FilePanel mx_RoomView_messageListWrapper">
-                <div className="mx_RoomView_empty">You must join the room to see its files</div>
+                <div className="mx_RoomView_empty">{_t("You must join the room to see its files")}</div>
             </div>;
         }
 
@@ -116,7 +115,7 @@ var FilePanel = React.createClass({
                     showUrlPreview = { false }
                     tileShape="file_grid"
                     opacity={ this.props.opacity }
-                    empty="There are no visible files in this room"
+                    empty={_t('There are no visible files in this room')}
                 />
             );
         }

src/components/structures/LoggedInView.js

@@ -18,6 +18,7 @@ limitations under the License.
 import * as Matrix from 'matrix-js-sdk';
 import React from 'react';
 
+import UserSettingsStore from '../../UserSettingsStore';
 import KeyCode from '../../KeyCode';
 import Notifier from '../../Notifier';
 import PageTypes from '../../PageTypes';
@@ -64,6 +65,13 @@ export default React.createClass({
         };
     },
 
+    getInitialState: function() {
+        return {
+            // use compact timeline view
+            useCompactLayout: UserSettingsStore.getSyncedSetting('useCompactLayout'),
+        };
+    },
+
     componentWillMount: function() {
         // stash the MatrixClient in case we log out before we are unmounted
         this._matrixClient = this.props.matrixClient;
@@ -75,10 +83,12 @@ export default React.createClass({
         CallMediaHandler.loadDevices();
 
         document.addEventListener('keydown', this._onKeyDown);
+        this._matrixClient.on("accountData", this.onAccountData);
     },
 
     componentWillUnmount: function() {
         document.removeEventListener('keydown', this._onKeyDown);
+        this._matrixClient.removeListener("accountData", this.onAccountData);
     },
 
     getScrollStateForRoom: function(roomId) {
@@ -92,6 +102,14 @@ export default React.createClass({
         return this.refs.roomView.canResetTimeline();
     },
 
+    onAccountData: function(event) {
+        if (event.getType() === "im.vector.web.settings") {
+            this.setState({
+                useCompactLayout: event.getContent().useCompactLayout
+            });
+        }
+    },
+
     _onKeyDown: function(ev) {
             /*
             // Remove this for now as ctrl+alt = alt-gr so this breaks keyboards which rely on alt-gr for numbers
@@ -186,7 +204,7 @@ export default React.createClass({
                         ConferenceHandler={this.props.ConferenceHandler}
                         scrollStateMap={this._scrollStateMap}
                     />;
-                if (!this.props.collapse_rhs) right_panel = <RightPanel roomId={this.props.currentRoomId} opacity={this.props.sideOpacity} />;
+                if (!this.props.collapse_rhs) right_panel = <RightPanel roomId={this.props.currentRoomId} opacity={this.props.rightOpacity} />;
                 break;
 
             case PageTypes.UserSettings:
@@ -198,7 +216,7 @@ export default React.createClass({
                     referralBaseUrl={this.props.config.referralBaseUrl}
                     teamToken={this.props.teamToken}
                 />;
-                if (!this.props.collapse_rhs) right_panel = <RightPanel opacity={this.props.sideOpacity}/>;
+                if (!this.props.collapse_rhs) right_panel = <RightPanel opacity={this.props.rightOpacity}/>;
                 break;
 
             case PageTypes.CreateRoom:
@@ -206,7 +224,7 @@ export default React.createClass({
                     onRoomCreated={this.props.onRoomCreated}
                     collapsedRhs={this.props.collapse_rhs}
                 />;
-                if (!this.props.collapse_rhs) right_panel = <RightPanel opacity={this.props.sideOpacity}/>;
+                if (!this.props.collapse_rhs) right_panel = <RightPanel opacity={this.props.rightOpacity}/>;
                 break;
 
             case PageTypes.RoomDirectory:
@@ -222,12 +240,12 @@ export default React.createClass({
                     teamServerUrl={this.props.config.teamServerConfig.teamServerURL}
                     teamToken={this.props.teamToken}
                 />
-                if (!this.props.collapse_rhs) right_panel = <RightPanel opacity={this.props.sideOpacity}/>
+                if (!this.props.collapse_rhs) right_panel = <RightPanel opacity={this.props.rightOpacity}/>
                 break;
 
             case PageTypes.UserView:
                 page_element = null; // deliberately null for now
-                right_panel = <RightPanel userId={this.props.viewUserId} opacity={this.props.sideOpacity} />;
+                right_panel = <RightPanel userId={this.props.viewUserId} opacity={this.props.rightOpacity} />;
                 break;
         }
 
@@ -248,6 +266,9 @@ export default React.createClass({
         if (topBar) {
             bodyClasses += ' mx_MatrixChat_toolbarShowing';
         }
+        if (this.state.useCompactLayout) {
+            bodyClasses += ' mx_MatrixChat_useCompactLayout';
+        }
 
         return (
             <div className='mx_MatrixChat_wrapper'>
@@ -256,7 +277,7 @@ export default React.createClass({
                     <LeftPanel
                         selectedRoom={this.props.currentRoomId}
                         collapsed={this.props.collapse_lhs || false}
-                        opacity={this.props.sideOpacity}
+                        opacity={this.props.leftOpacity}
                         teamToken={this.props.teamToken}
                     />
                     <main className='mx_MatrixChat_middlePanel'>

src/components/structures/MatrixChat.js

@@ -20,6 +20,8 @@ import q from 'q';
 import React from 'react';
 import Matrix from "matrix-js-sdk";
 
+import Analytics from "../../Analytics";
+import UserSettingsStore from '../../UserSettingsStore';
 import MatrixClientPeg from "../../MatrixClientPeg";
 import PlatformPeg from "../../PlatformPeg";
 import SdkConfig from "../../SdkConfig";
@@ -36,6 +38,7 @@ import PageTypes from '../../PageTypes';
 
 import createRoom from "../../createRoom";
 import * as UDEHandler from '../../UnknownDeviceErrorHandler';
+import { _t } from '../../languageHandler';
 
 module.exports = React.createClass({
     displayName: 'MatrixChat',
@@ -116,8 +119,9 @@ module.exports = React.createClass({
             collapse_rhs: false,
             ready: false,
             width: 10000,
-            sideOpacity: 1.0,
+            leftOpacity: 1.0,
             middleOpacity: 1.0,
+            rightOpacity: 1.0,
 
             version: null,
             newVersion: null,
@@ -187,6 +191,8 @@ module.exports = React.createClass({
     componentWillMount: function() {
         SdkConfig.put(this.props.config);
 
+        if (!UserSettingsStore.getLocalSetting('analyticsOptOut', false)) Analytics.enable();
+
         // Used by _viewRoom before getting state from sync
         this.firstSyncComplete = false;
         this.firstSyncPromise = q.defer();
@@ -246,7 +252,6 @@ module.exports = React.createClass({
         UDEHandler.startListening();
 
         this.focusComposer = false;
-        window.addEventListener("focus", this.onFocus);
 
         // this can technically be done anywhere but doing this here keeps all
         // the routing url path logic together.
@@ -287,7 +292,7 @@ module.exports = React.createClass({
     },
 
     componentWillUnmount: function() {
-        Lifecycle.stopMatrixClient();
+        Lifecycle.stopMatrixClient(false);
         dis.unregister(this.dispatcherRef);
         UDEHandler.stopListening();
         window.removeEventListener("focus", this.onFocus);
@@ -359,7 +364,7 @@ module.exports = React.createClass({
                 // is completed in another browser, we'll be 401ed for using
                 // a guest access token for a non-guest account.
                 // It will be restarted in onReturnToGuestClick
-                Lifecycle.stopMatrixClient();
+                Lifecycle.stopMatrixClient(false);
 
                 this.notifyNewScreen('register');
                 break;
@@ -375,8 +380,8 @@ module.exports = React.createClass({
                 break;
             case 'reject_invite':
                 Modal.createDialog(QuestionDialog, {
-                    title: "Reject invitation",
-                    description: "Are you sure you want to reject the invitation?",
+                    title: _t('Reject invitation'),
+                    description: _t('Are you sure you want to reject the invitation?'),
                     onFinished: (confirm) => {
                         if (confirm) {
                             // FIXME: controller shouldn't be loading a view :(
@@ -391,7 +396,7 @@ module.exports = React.createClass({
                             }, (err) => {
                                 modal.close();
                                 Modal.createDialog(ErrorDialog, {
-                                    title: "Failed to reject invitation",
+                                    title: _t('Failed to reject invitation'),
                                     description: err.toString(),
                                 });
                             });
@@ -437,9 +442,9 @@ module.exports = React.createClass({
                 //this._setPage(PageTypes.CreateRoom);
                 //this.notifyNewScreen('new');
                 Modal.createDialog(TextInputDialog, {
-                    title: "Create Room",
-                    description: "Room name (optional)",
-                    button: "Create Room",
+                    title: _t('Create Room'),
+                    description: _t('Room name (optional)'),
+                    button: _t('Create Room'),
                     onFinished: (shouldCreate, name) => {
                         if (shouldCreate) {
                             const createOpts = {};
@@ -490,12 +495,14 @@ module.exports = React.createClass({
                     collapse_rhs: false,
                 });
                 break;
-            case 'ui_opacity':
+            case 'ui_opacity': {
+                const sideDefault = payload.sideOpacity >= 0.0 ? payload.sideOpacity : 1.0;
                 this.setState({
-                    sideOpacity: payload.sideOpacity,
-                    middleOpacity: payload.middleOpacity,
+                    leftOpacity: payload.leftOpacity >= 0.0 ? payload.leftOpacity : sideDefault,
+                    middleOpacity: payload.middleOpacity || 1.0,
+                    rightOpacity: payload.rightOpacity >= 0.0 ? payload.rightOpacity : sideDefault,
                 });
-                break;
+                break; }
             case 'set_theme':
                 this._onSetTheme(payload.value);
                 break;
@@ -572,44 +579,44 @@ module.exports = React.createClass({
 
     // switch view to the given room
     //
-    // @param {Object} room_info Object containing data about the room to be joined
-    // @param {string=} room_info.room_id ID of the room to join. One of room_id or room_alias must be given.
-    // @param {string=} room_info.room_alias Alias of the room to join. One of room_id or room_alias must be given.
-    // @param {boolean=} room_info.auto_join If true, automatically attempt to join the room if not already a member.
-    // @param {boolean=} room_info.show_settings Makes RoomView show the room settings dialog.
-    // @param {string=} room_info.event_id ID of the event in this room to show: this will cause a switch to the
+    // @param {Object} roomInfo Object containing data about the room to be joined
+    // @param {string=} roomInfo.room_id ID of the room to join. One of room_id or room_alias must be given.
+    // @param {string=} roomInfo.room_alias Alias of the room to join. One of room_id or room_alias must be given.
+    // @param {boolean=} roomInfo.auto_join If true, automatically attempt to join the room if not already a member.
+    // @param {boolean=} roomInfo.show_settings Makes RoomView show the room settings dialog.
+    // @param {string=} roomInfo.event_id ID of the event in this room to show: this will cause a switch to the
     //                                    context of that particular event.
-    // @param {Object=} room_info.third_party_invite Object containing data about the third party
+    // @param {Object=} roomInfo.third_party_invite Object containing data about the third party
     //                                    we received to join the room, if any.
-    // @param {string=} room_info.third_party_invite.inviteSignUrl 3pid invite sign URL
-    // @param {string=} room_info.third_party_invite.invitedEmail The email address the invite was sent to
-    // @param {Object=} room_info.oob_data Object of additional data about the room
+    // @param {string=} roomInfo.third_party_invite.inviteSignUrl 3pid invite sign URL
+    // @param {string=} roomInfo.third_party_invite.invitedEmail The email address the invite was sent to
+    // @param {Object=} roomInfo.oob_data Object of additional data about the room
     //                               that has been passed out-of-band (eg.
     //                               room name and avatar from an invite email)
-    _viewRoom: function(room_info) {
+    _viewRoom: function(roomInfo) {
         this.focusComposer = true;
 
         const newState = {
-            initialEventId: room_info.event_id,
-            highlightedEventId: room_info.event_id,
+            initialEventId: roomInfo.event_id,
+            highlightedEventId: roomInfo.event_id,
             initialEventPixelOffset: undefined,
             page_type: PageTypes.RoomView,
-            thirdPartyInvite: room_info.third_party_invite,
-            roomOobData: room_info.oob_data,
-            currentRoomAlias: room_info.room_alias,
-            autoJoin: room_info.auto_join,
+            thirdPartyInvite: roomInfo.third_party_invite,
+            roomOobData: roomInfo.oob_data,
+            currentRoomAlias: roomInfo.room_alias,
+            autoJoin: roomInfo.auto_join,
         };
 
-        if (!room_info.room_alias) {
-            newState.currentRoomId = room_info.room_id;
+        if (!roomInfo.room_alias) {
+            newState.currentRoomId = roomInfo.room_id;
         }
 
         // if we aren't given an explicit event id, look for one in the
         // scrollStateMap.
         //
         // TODO: do this in RoomView rather than here
-        if (!room_info.event_id && this.refs.loggedInView) {
-            const scrollState = this.refs.loggedInView.getScrollStateForRoom(room_info.room_id);
+        if (!roomInfo.event_id && this.refs.loggedInView) {
+            const scrollState = this.refs.loggedInView.getScrollStateForRoom(roomInfo.room_id);
             if (scrollState) {
                 newState.initialEventId = scrollState.focussedEvent;
                 newState.initialEventPixelOffset = scrollState.pixelOffset;
@@ -621,15 +628,15 @@ module.exports = React.createClass({
         let waitFor = q(null);
         if (!this.firstSyncComplete) {
             if (!this.firstSyncPromise) {
-                console.warn('Cannot view a room before first sync. room_id:', room_info.room_id);
+                console.warn('Cannot view a room before first sync. room_id:', roomInfo.room_id);
                 return;
             }
             waitFor = this.firstSyncPromise.promise;
         }
 
         waitFor.done(() => {
-            let presentedId = room_info.room_alias || room_info.room_id;
-            const room = MatrixClientPeg.get().getRoom(room_info.room_id);
+            let presentedId = roomInfo.room_alias || roomInfo.room_id;
+            const room = MatrixClientPeg.get().getRoom(roomInfo.room_id);
             if (room) {
                 const theAlias = Rooms.getDisplayAliasForRoom(room);
                 if (theAlias) presentedId = theAlias;
@@ -641,8 +648,8 @@ module.exports = React.createClass({
                 }
             }
 
-            if (room_info.event_id) {
-                presentedId += "/" + room_info.event_id;
+            if (roomInfo.event_id) {
+                presentedId += "/" + roomInfo.event_id;
             }
             this.notifyNewScreen('room/' + presentedId);
             newState.ready = true;
@@ -653,16 +660,20 @@ module.exports = React.createClass({
     _createChat: function() {
         const ChatInviteDialog = sdk.getComponent("dialogs.ChatInviteDialog");
         Modal.createDialog(ChatInviteDialog, {
-            title: "Start a new chat",
+            title: _t('Start a chat'),
+            description: _t("Who would you like to communicate with?"),
+            placeholder: _t("Email, name or matrix ID"),
+            button: _t("Start Chat"),
         });
     },
 
     _invite: function(roomId) {
         const ChatInviteDialog = sdk.getComponent("dialogs.ChatInviteDialog");
         Modal.createDialog(ChatInviteDialog, {
-            title: "Invite new room members",
-            button: "Send Invites",
-            description: "Who would you like to add to this room?",
+            title: _t('Invite new room members'),
+            description: _t('Who would you like to add to this room?'),
+            button: _t('Send Invites'),
+            placeholder: _t("Email, name or matrix ID"),
             roomId: roomId,
         });
     },
@@ -692,9 +703,9 @@ module.exports = React.createClass({
                         modal.close();
                         console.error("Failed to leave room " + roomId + " " + err);
                         Modal.createDialog(ErrorDialog, {
-                            title: "Failed to leave room",
+                            title: _t("Failed to leave room"),
                             description: (err && err.message ? err.message :
-                                "Server may be unavailable, overloaded, or you hit a bug."),
+                                _t("Server may be unavailable, overloaded, or you hit a bug.")),
                         });
                     });
                 }
@@ -886,8 +897,8 @@ module.exports = React.createClass({
         cli.on('Session.logged_out', function(call) {
             const ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
             Modal.createDialog(ErrorDialog, {
-                title: "Signed Out",
-                description: "For security, this session has been signed out. Please sign in again.",
+                title: _t('Signed Out'),
+                description: _t('For security, this session has been signed out. Please sign in again.'),
             });
             dis.dispatch({
                 action: 'logout',
@@ -905,10 +916,6 @@ module.exports = React.createClass({
         });
     },
 
-    onFocus: function(ev) {
-        dis.dispatch({action: 'focus_composer'});
-    },
-
     showScreen: function(screen, params) {
         if (screen == 'register') {
             dis.dispatch({
@@ -999,6 +1006,7 @@ module.exports = React.createClass({
         if (this.props.onNewScreen) {
             this.props.onNewScreen(screen);
         }
+        Analytics.trackPageChange();
     },
 
     onAliasClick: function(event, alias) {
@@ -1199,7 +1207,7 @@ module.exports = React.createClass({
                 <div className="mx_MatrixChat_splash">
                     <Spinner />
                     <a href="#" className="mx_MatrixChat_splashButtons" onClick={ this.onLogoutClick }>
-                    Logout
+                    { _t('Logout') }
                     </a>
                 </div>
             );

src/components/structures/MessagePanel.js

@@ -84,6 +84,12 @@ module.exports = React.createClass({
 
         // shape parameter to be passed to EventTiles
         tileShape: React.PropTypes.string,
+
+        // show twelve hour timestamps
+        isTwelveHour: React.PropTypes.bool,
+
+        // show timestamps always
+        alwaysShowTimestamps: React.PropTypes.bool,
     },
 
     componentWillMount: function() {
@@ -230,8 +236,8 @@ module.exports = React.createClass({
     },
 
     _getEventTiles: function() {
-        var EventTile = sdk.getComponent('rooms.EventTile');
-        var DateSeparator = sdk.getComponent('messages.DateSeparator');
+        const EventTile = sdk.getComponent('rooms.EventTile');
+        const DateSeparator = sdk.getComponent('messages.DateSeparator');
         const MemberEventListSummary = sdk.getComponent('views.elements.MemberEventListSummary');
 
         this.eventNodes = {};
@@ -310,7 +316,7 @@ module.exports = React.createClass({
                 const key = "membereventlistsummary-" + (prevEvent ? mxEv.getId() : "initial");
 
                 if (this._wantsDateSeparator(prevEvent, mxEv.getDate())) {
-                    let dateSeparator = <li key={ts1+'~'}><DateSeparator key={ts1+'~'} ts={ts1}/></li>;
+                    let dateSeparator = <li key={ts1+'~'}><DateSeparator key={ts1+'~'} ts={ts1} showTwelveHour={this.props.isTwelveHour}/></li>;
                     ret.push(dateSeparator);
                 }
 
@@ -413,8 +419,8 @@ module.exports = React.createClass({
     },
 
     _getTilesForEvent: function(prevEvent, mxEv, last) {
-        var EventTile = sdk.getComponent('rooms.EventTile');
-        var DateSeparator = sdk.getComponent('messages.DateSeparator');
+        const EventTile = sdk.getComponent('rooms.EventTile');
+        const DateSeparator = sdk.getComponent('messages.DateSeparator');
         var ret = [];
 
         // is this a continuation of the previous message?
@@ -452,7 +458,7 @@ module.exports = React.createClass({
 
         // do we need a date separator since the last event?
         if (this._wantsDateSeparator(prevEvent, eventDate)) {
-            var dateSeparator = <li key={ts1}><DateSeparator key={ts1} ts={ts1}/></li>;
+            var dateSeparator = <li key={ts1}><DateSeparator key={ts1} ts={ts1} showTwelveHour={this.props.isTwelveHour}/></li>;
             ret.push(dateSeparator);
             continuation = false;
         }
@@ -468,7 +474,6 @@ module.exports = React.createClass({
         if (this.props.manageReadReceipts) {
             readReceipts = this._getReadReceiptsForEvent(mxEv);
         }
-
         ret.push(
                 <li key={eventId}
                         ref={this._collectEventNode.bind(this, eventId)}
@@ -482,6 +487,7 @@ module.exports = React.createClass({
                         checkUnmounting={this._isUnmounting}
                         eventSendStatus={mxEv.status}
                         tileShape={this.props.tileShape}
+                        isTwelveHour={this.props.isTwelveHour}
                         last={last} isSelectedEvent={highlight}/>
                 </li>
         );
@@ -615,8 +621,13 @@ module.exports = React.createClass({
         var style = this.props.hidden ? { display: 'none' } : {};
         style.opacity = this.props.opacity;
 
+        var className = this.props.className + " mx_fadable";
+        if (this.props.alwaysShowTimestamps) {
+            className += " mx_MessagePanel_alwaysShowTimestamps";
+        }
+
         return (
-            <ScrollPanel ref="scrollPanel" className={ this.props.className + " mx_fadable" }
+            <ScrollPanel ref="scrollPanel" className={ className }
                     onScroll={ this.props.onScroll }
                     onResize={ this.onResize }
                     onFillRequest={ this.props.onFillRequest }

src/components/structures/NotificationPanel.js

@@ -16,7 +16,7 @@ limitations under the License.
 
 var React = require('react');
 var ReactDOM = require("react-dom");
-
+import { _t } from '../../languageHandler';
 var Matrix = require("matrix-js-sdk");
 var sdk = require('../../index');
 var MatrixClientPeg = require("../../MatrixClientPeg");
@@ -37,7 +37,6 @@ var NotificationPanel = React.createClass({
         var Loader = sdk.getComponent("elements.Spinner");
 
         var timelineSet = MatrixClientPeg.get().getNotifTimelineSet();
-
         if (timelineSet) {
             return (
                 <TimelinePanel key={"NotificationPanel_" + this.props.roomId}
@@ -48,7 +47,7 @@ var NotificationPanel = React.createClass({
                     showUrlPreview = { false }
                     opacity={ this.props.opacity }
                     tileShape="notif"
-                    empty="You have no visible notifications"
+                    empty={ _t('You have no visible notifications') }
                 />
             );
         }

src/components/structures/RoomStatusBar.js

@@ -14,12 +14,13 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-var React = require('react');
-var sdk = require('../../index');
-var dis = require("../../dispatcher");
-var WhoIsTyping = require("../../WhoIsTyping");
-var MatrixClientPeg = require("../../MatrixClientPeg");
-const MemberAvatar = require("../views/avatars/MemberAvatar");
+import React from 'react';
+import { _t } from '../../languageHandler';
+import sdk from '../../index';
+import dis from '../../dispatcher';
+import WhoIsTyping from '../../WhoIsTyping';
+import MatrixClientPeg from '../../MatrixClientPeg';
+import MemberAvatar from '../views/avatars/MemberAvatar';
 
 const HIDE_DEBOUNCE_MS = 10000;
 const STATUS_BAR_HIDDEN = 0;
@@ -175,8 +176,8 @@ module.exports = React.createClass({
                 <div className="mx_RoomStatusBar_scrollDownIndicator"
                         onClick={ this.props.onScrollToBottomClick }>
                     <img src="img/scrolldown.svg" width="24" height="24"
-                        alt="Scroll to bottom of page"
-                        title="Scroll to bottom of page"/>
+                        alt={ _t("Scroll to bottom of page") }
+                        title={ _t("Scroll to bottom of page") }/>
                 </div>
             );
         }
@@ -250,10 +251,10 @@ module.exports = React.createClass({
                 <div className="mx_RoomStatusBar_connectionLostBar">
                     <img src="img/warning.svg" width="24" height="23" title="/!\ " alt="/!\ "/>
                     <div className="mx_RoomStatusBar_connectionLostBar_title">
-                        Connectivity to the server has been lost.
+                        {_t('Connectivity to the server has been lost.')}
                     </div>
                     <div className="mx_RoomStatusBar_connectionLostBar_desc">
-                        Sent messages will be stored until your connection has returned.
+                        {_t('Sent messages will be stored until your connection has returned.')}
                     </div>
                 </div>
             );
@@ -266,7 +267,7 @@ module.exports = React.createClass({
                         <TabCompleteBar tabComplete={this.props.tabComplete} />
                         <div className="mx_RoomStatusBar_tabCompleteEol" title="->|">
                             <TintableSvg src="img/eol.svg" width="22" height="16"/>
-                            Auto-complete
+                            {_t('Auto-complete')}
                         </div>
                     </div>
                 </div>
@@ -283,13 +284,12 @@ module.exports = React.createClass({
                     <div className="mx_RoomStatusBar_connectionLostBar_desc">
                         <a className="mx_RoomStatusBar_resend_link"
                           onClick={ this.props.onResendAllClick }>
-                            Resend all
-                        </a> or <a
+                            {_t('Resend all')}
+                        </a> {_t('or')} <a
                           className="mx_RoomStatusBar_resend_link"
                           onClick={ this.props.onCancelAllClick }>
-                            cancel all
-                        </a> now. You can also select individual messages to
-                        resend or cancel.
+                            {_t('cancel all')}
+                        </a> {_t('now. You can also select individual messages to resend or cancel.')}
                     </div>
                 </div>
             );
@@ -324,7 +324,7 @@ module.exports = React.createClass({
         if (this.props.hasActiveCall) {
             return (
                 <div className="mx_RoomStatusBar_callBar">
-                    <b>Active call</b>
+                    <b>{_t('Active call')}</b>
                 </div>
             );
         }

src/components/structures/RoomView.js

@@ -25,6 +25,7 @@ var ReactDOM = require("react-dom");
 var q = require("q");
 var classNames = require("classnames");
 var Matrix = require("matrix-js-sdk");
+import { _t } from '../../languageHandler';
 
 var UserSettingsStore = require('../../UserSettingsStore');
 var MatrixClientPeg = require("../../MatrixClientPeg");
@@ -124,6 +125,8 @@ module.exports = React.createClass({
             room: null,
             roomId: null,
             roomLoading: true,
+
+            forwardingEvent: null,
             editingRoomSettings: false,
             uploadingRoomSettings: false,
             numUnreadMessages: 0,
@@ -296,7 +299,7 @@ module.exports = React.createClass({
 
     componentWillReceiveProps: function(newProps) {
         if (newProps.roomAddress != this.props.roomAddress) {
-            throw new Error("changing room on a RoomView is not supported");
+            throw new Error(_t("changing room on a RoomView is not supported"));
         }
 
         if (newProps.eventId != this.props.eventId) {
@@ -370,10 +373,10 @@ module.exports = React.createClass({
     onPageUnload(event) {
         if (ContentMessages.getCurrentUploads().length > 0) {
             return event.returnValue =
-                'You seem to be uploading files, are you sure you want to quit?';
+                _t("You seem to be uploading files, are you sure you want to quit?");
         } else if (this._getCallForRoom() && this.state.callState !== 'ended') {
             return event.returnValue =
-                'You seem to be in a call, are you sure you want to quit?';
+                _t("You seem to be in a call, are you sure you want to quit?");
         }
     },
 
@@ -451,6 +454,11 @@ module.exports = React.createClass({
                     callState: callState
                 });
 
+                break;
+            case 'forward_event':
+                this.setState({
+                    forwardingEvent: payload.content,
+                });
                 break;
         }
     },
@@ -530,14 +538,14 @@ module.exports = React.createClass({
         if (!userHasUsedEncryption) {
             const QuestionDialog = sdk.getComponent("dialogs.QuestionDialog");
             Modal.createDialog(QuestionDialog, {
-                title: "Warning!",
+                title: _t("Warning!"),
                 hasCancelButton: false,
                 description: (
                     <div>
-                        <p>End-to-end encryption is in beta and may not be reliable.</p>
-                        <p>You should <b>not</b> yet trust it to secure data.</p>
-                        <p>Devices will <b>not</b> yet be able to decrypt history from before they joined the room.</p>
-                        <p>Encrypted messages will not be visible on clients that do not yet implement encryption.</p>
+                        <p>{ _t("End-to-end encryption is in beta and may not be reliable") }.</p>
+                        <p>{ _t("You should not yet trust it to secure data") }.</p>
+                        <p>{ _t("Devices will not yet be able to decrypt history from before they joined the room") }.</p>
+                        <p>{ _t("Encrypted messages will not be visible on clients that do not yet implement encryption") }.</p>
                     </div>
                 ),
             });
@@ -708,10 +716,10 @@ module.exports = React.createClass({
         if (!unsentMessages.length) return "";
         for (const event of unsentMessages) {
             if (!event.error || event.error.name !== "UnknownDeviceError") {
-                return "Some of your messages have not been sent.";
+                return _t("Some of your messages have not been sent") + ".";
             }
         }
-        return "Message not sent due to unknown devices being present";
+        return _t("Message not sent due to unknown devices being present");
     },
 
     _getUnsentMessages: function(room) {
@@ -871,15 +879,15 @@ module.exports = React.createClass({
             ) {
                 var NeedToRegisterDialog = sdk.getComponent("dialogs.NeedToRegisterDialog");
                 Modal.createDialog(NeedToRegisterDialog, {
-                    title: "Failed to join the room",
-                    description: "This room is private or inaccessible to guests. You may be able to join if you register."
+                    title: _t("Failed to join the room"),
+                    description: _t("This room is private or inaccessible to guests. You may be able to join if you register") + "."
                 });
             } else {
                 var msg = error.message ? error.message : JSON.stringify(error);
                 var ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
                 Modal.createDialog(ErrorDialog, {
-                    title: "Failed to join room",
-                    description: msg
+                    title: _t("Failed to join room"),
+                    description: msg,
                 });
             }
         }).done();
@@ -939,8 +947,8 @@ module.exports = React.createClass({
         if (MatrixClientPeg.get().isGuest()) {
             var NeedToRegisterDialog = sdk.getComponent("dialogs.NeedToRegisterDialog");
             Modal.createDialog(NeedToRegisterDialog, {
-                title: "Please Register",
-                description: "Guest users can't upload files. Please register to upload."
+                title: _t("Please Register"),
+                description: _t("Guest users can't upload files. Please register to upload") + "."
             });
             return;
         }
@@ -959,8 +967,8 @@ module.exports = React.createClass({
             const ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
             console.error("Failed to upload file " + file + " " + error);
             Modal.createDialog(ErrorDialog, {
-                title: "Failed to upload file",
-                description: ((error && error.message) ? error.message : "Server may be unavailable, overloaded, or the file too big"),
+                title: _t('Failed to upload file'),
+                description: ((error && error.message) ? error.message : _t("Server may be unavailable, overloaded, or the file too big")),
             });
         });
     },
@@ -1046,8 +1054,8 @@ module.exports = React.createClass({
             var ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
             console.error("Search failed: " + error);
             Modal.createDialog(ErrorDialog, {
-                title: "Search failed",
-                description: ((error && error.message) ? error.message : "Server may be unavailable, overloaded, or search timed out :("),
+                title: _t("Search failed"),
+                description: ((error && error.message) ? error.message : _t("Server may be unavailable, overloaded, or search timed out :(")),
             });
         }).finally(function() {
             self.setState({
@@ -1082,12 +1090,12 @@ module.exports = React.createClass({
         if (!this.state.searchResults.next_batch) {
             if (this.state.searchResults.results.length == 0) {
                 ret.push(<li key="search-top-marker">
-                         <h2 className="mx_RoomView_topMarker">No results</h2>
+                         <h2 className="mx_RoomView_topMarker">{ _t("No results") }</h2>
                          </li>
                         );
             } else {
                 ret.push(<li key="search-top-marker">
-                         <h2 className="mx_RoomView_topMarker">No more results</h2>
+                         <h2 className="mx_RoomView_topMarker">{ _t("No more results") }</h2>
                          </li>
                         );
             }
@@ -1124,10 +1132,10 @@ module.exports = React.createClass({
                     // it. We should tell the js sdk to go and find out about
                     // it. But that's not an issue currently, as synapse only
                     // returns results for rooms we're joined to.
-                    var roomName = room ? room.name : "Unknown room "+roomId;
+                    var roomName = room ? room.name : _t("Unknown room %(roomId)s", { roomId: roomId });
 
                     ret.push(<li key={mxEv.getId() + "-room"}>
-                                 <h1>Room: { roomName }</h1>
+                                 <h1>{ _t("Room") }: { roomName }</h1>
                              </li>);
                     lastRoomId = roomId;
                 }
@@ -1173,7 +1181,7 @@ module.exports = React.createClass({
                 });
                 var ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
                 Modal.createDialog(ErrorDialog, {
-                    title: "Failed to save settings",
+                    title: _t("Failed to save settings"),
                     description: fails.map(function(result) { return result.reason; }).join("\n"),
                 });
                 // still editing room settings
@@ -1194,7 +1202,10 @@ module.exports = React.createClass({
     onCancelClick: function() {
         console.log("updateTint from onCancelClick");
         this.updateTint();
-        this.setState({editingRoomSettings: false});
+        this.setState({
+            editingRoomSettings: false,
+            forwardingEvent: null,
+        });
         dis.dispatch({action: 'focus_composer'});
     },
 
@@ -1209,11 +1220,11 @@ module.exports = React.createClass({
         MatrixClientPeg.get().forget(this.state.room.roomId).done(function() {
             dis.dispatch({ action: 'view_next_room' });
         }, function(err) {
-            var errCode = err.errcode || "unknown error code";
+            var errCode = err.errcode || _t("unknown error code");
             var ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
             Modal.createDialog(ErrorDialog, {
-                title: "Error",
-                description: `Failed to forget room (${errCode})`
+                title: _t("Error"),
+                description: _t("Failed to forget room %(errCode)s", { errCode: errCode }),
             });
         });
     },
@@ -1234,8 +1245,8 @@ module.exports = React.createClass({
             var msg = error.message ? error.message : JSON.stringify(error);
             var ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
             Modal.createDialog(ErrorDialog, {
-                title: "Failed to reject invite",
-                description: msg
+                title: _t("Failed to reject invite"),
+                description: msg,
             });
 
             self.setState({
@@ -1472,61 +1483,61 @@ module.exports = React.createClass({
     },
 
     render: function() {
-        var RoomHeader = sdk.getComponent('rooms.RoomHeader');
-        var MessageComposer = sdk.getComponent('rooms.MessageComposer');
-        var RoomSettings = sdk.getComponent("rooms.RoomSettings");
-        var AuxPanel = sdk.getComponent("rooms.AuxPanel");
-        var SearchBar = sdk.getComponent("rooms.SearchBar");
-        var ScrollPanel = sdk.getComponent("structures.ScrollPanel");
-        var TintableSvg = sdk.getComponent("elements.TintableSvg");
-        var RoomPreviewBar = sdk.getComponent("rooms.RoomPreviewBar");
-        var Loader = sdk.getComponent("elements.Spinner");
-        var TimelinePanel = sdk.getComponent("structures.TimelinePanel");
+        const RoomHeader = sdk.getComponent('rooms.RoomHeader');
+        const MessageComposer = sdk.getComponent('rooms.MessageComposer');
+        const ForwardMessage = sdk.getComponent("rooms.ForwardMessage");
+        const RoomSettings = sdk.getComponent("rooms.RoomSettings");
+        const AuxPanel = sdk.getComponent("rooms.AuxPanel");
+        const SearchBar = sdk.getComponent("rooms.SearchBar");
+        const ScrollPanel = sdk.getComponent("structures.ScrollPanel");
+        const TintableSvg = sdk.getComponent("elements.TintableSvg");
+        const RoomPreviewBar = sdk.getComponent("rooms.RoomPreviewBar");
+        const Loader = sdk.getComponent("elements.Spinner");
+        const TimelinePanel = sdk.getComponent("structures.TimelinePanel");
 
         if (!this.state.room) {
-                if (this.state.roomLoading) {
-                    return (
-                        <div className="mx_RoomView">
-                            <Loader />
-                        </div>
-                    );
+            if (this.state.roomLoading) {
+                return (
+                    <div className="mx_RoomView">
+                        <Loader />
+                    </div>
+                );
+            } else {
+                var inviterName = undefined;
+                if (this.props.oobData) {
+                    inviterName = this.props.oobData.inviterName;
+                }
+                var invitedEmail = undefined;
+                if (this.props.thirdPartyInvite) {
+                    invitedEmail = this.props.thirdPartyInvite.invitedEmail;
                 }
-                else {
-                    var inviterName = undefined;
-                    if (this.props.oobData) {
-                        inviterName = this.props.oobData.inviterName;
-                    }
-                    var invitedEmail = undefined;
-                    if (this.props.thirdPartyInvite) {
-                        invitedEmail = this.props.thirdPartyInvite.invitedEmail;
-                    }
 
-                    // We have no room object for this room, only the ID.
-                    // We've got to this room by following a link, possibly a third party invite.
-                    var room_alias = this.props.roomAddress[0] == '#' ? this.props.roomAddress : null;
-                    return (
-                        <div className="mx_RoomView">
-                            <RoomHeader ref="header"
-                                room={this.state.room}
-                                oobData={this.props.oobData}
-                                collapsedRhs={ this.props.collapsedRhs }
+                // We have no room object for this room, only the ID.
+                // We've got to this room by following a link, possibly a third party invite.
+                var room_alias = this.props.roomAddress[0] == '#' ? this.props.roomAddress : null;
+                return (
+                    <div className="mx_RoomView">
+                        <RoomHeader ref="header"
+                            room={this.state.room}
+                            oobData={this.props.oobData}
+                            collapsedRhs={ this.props.collapsedRhs }
+                        />
+                        <div className="mx_RoomView_auxPanel">
+                            <RoomPreviewBar onJoinClick={ this.onJoinButtonClicked }
+                                            onForgetClick={ this.onForgetClick }
+                                            onRejectClick={ this.onRejectThreepidInviteButtonClicked }
+                                            canPreview={ false } error={ this.state.roomLoadError }
+                                            roomAlias={room_alias}
+                                            spinner={this.state.joining}
+                                            inviterName={inviterName}
+                                            invitedEmail={invitedEmail}
+                                            room={this.state.room}
                             />
-                            <div className="mx_RoomView_auxPanel">
-                                <RoomPreviewBar onJoinClick={ this.onJoinButtonClicked }
-                                                onForgetClick={ this.onForgetClick }
-                                                onRejectClick={ this.onRejectThreepidInviteButtonClicked }
-                                                canPreview={ false } error={ this.state.roomLoadError }
-                                                roomAlias={room_alias}
-                                                spinner={this.state.joining}
-                                                inviterName={inviterName}
-                                                invitedEmail={invitedEmail}
-                                                room={this.state.room}
-                                />
-                            </div>
-                            <div className="mx_RoomView_messagePanel"></div>
                         </div>
-                    );
-                }
+                        <div className="mx_RoomView_messagePanel"></div>
+                    </div>
+                );
+            }
         }
 
         var myUserId = MatrixClientPeg.get().credentials.userId;
@@ -1609,17 +1620,18 @@ module.exports = React.createClass({
             />;
         }
 
-        var aux = null;
+        let aux = null;
+        let hideCancel = false;
         if (this.state.editingRoomSettings) {
             aux = <RoomSettings ref="room_settings" onSaveClick={this.onSettingsSaveClick} onCancelClick={this.onCancelClick} room={this.state.room} />;
-        }
-        else if (this.state.uploadingRoomSettings) {
+        } else if (this.state.uploadingRoomSettings) {
             aux = <Loader/>;
-        }
-        else if (this.state.searching) {
+        } else if (this.state.forwardingEvent !== null) {
+            aux = <ForwardMessage onCancelClick={this.onCancelClick} currentRoomId={this.state.room.roomId} mxEvent={this.state.forwardingEvent} />;
+        } else if (this.state.searching) {
+            hideCancel = true; // has own cancel
             aux = <SearchBar ref="search_bar" searchInProgress={this.state.searchInProgress } onCancelClick={this.onCancelSearchClick} onSearch={this.onSearch}/>;
-        }
-        else if (!myMember || myMember.membership !== "join") {
+        } else if (!myMember || myMember.membership !== "join") {
             // We do have a room object for this room, but we're not currently in it.
             // We may have a 3rd party invite to it.
             var inviterName = undefined;
@@ -1630,6 +1642,7 @@ module.exports = React.createClass({
             if (this.props.thirdPartyInvite) {
                 invitedEmail = this.props.thirdPartyInvite.invitedEmail;
             }
+            hideCancel = true;
             aux = (
                 <RoomPreviewBar onJoinClick={this.onJoinButtonClicked}
                                 onForgetClick={ this.onForgetClick }
@@ -1681,7 +1694,7 @@ module.exports = React.createClass({
 
             if (call.type === "video") {
                 zoomButton = (
-                    <div className="mx_RoomView_voipButton" onClick={this.onFullscreenClick} title="Fill screen">
+                    <div className="mx_RoomView_voipButton" onClick={this.onFullscreenClick} title={ _t("Fill screen") }>
                         <TintableSvg src="img/fullscreen.svg" width="29" height="22" style={{ marginTop: 1, marginRight: 4 }}/>
                     </div>
                 );
@@ -1689,14 +1702,14 @@ module.exports = React.createClass({
                 videoMuteButton =
                     <div className="mx_RoomView_voipButton" onClick={this.onMuteVideoClick}>
                         <TintableSvg src={call.isLocalVideoMuted() ? "img/video-unmute.svg" : "img/video-mute.svg"}
-                             alt={call.isLocalVideoMuted() ? "Click to unmute video" : "Click to mute video"}
+                             alt={call.isLocalVideoMuted() ? _t("Click to unmute video") : _t("Click to mute video")}
                              width="31" height="27"/>
                     </div>;
             }
             voiceMuteButton =
                 <div className="mx_RoomView_voipButton" onClick={this.onMuteAudioClick}>
                     <TintableSvg src={call.isMicrophoneMuted() ? "img/voice-unmute.svg" : "img/voice-mute.svg"}
-                         alt={call.isMicrophoneMuted() ? "Click to unmute audio" : "Click to mute audio"}
+                         alt={call.isMicrophoneMuted() ? _t("Click to unmute audio") : _t("Click to mute audio")}
                          width="21" height="26"/>
                 </div>;
 
@@ -1732,14 +1745,13 @@ module.exports = React.createClass({
         }
 
         // console.log("ShowUrlPreview for %s is %s", this.state.room.roomId, this.state.showUrlPreview);
-
         var messagePanel = (
             <TimelinePanel ref={this._gatherTimelinePanelRef}
                 timelineSet={this.state.room.getUnfilteredTimelineSet()}
                 manageReadReceipts={!UserSettingsStore.getSyncedSetting('hideReadReceipts', false)}
                 manageReadMarkers={true}
                 hidden={hideMessagePanel}
-                highlightedEventId={this.props.highlightedEventId}
+                highlightedEventId={this.state.forwardingEvent ? this.state.forwardingEvent.getId() : this.props.highlightedEventId}
                 eventId={this.props.eventId}
                 eventPixelOffset={this.props.eventPixelOffset}
                 onScroll={ this.onMessageListScroll }
@@ -1777,13 +1789,10 @@ module.exports = React.createClass({
                     onSearchClick={this.onSearchClick}
                     onSettingsClick={this.onSettingsClick}
                     onSaveClick={this.onSettingsSaveClick}
-                    onCancelClick={this.onCancelClick}
-                    onForgetClick={
-                        (myMember && myMember.membership === "leave") ? this.onForgetClick : null
-                    }
-                    onLeaveClick={
-                        (myMember && myMember.membership === "join") ? this.onLeaveClick : null
-                    } />
+                    onCancelClick={(aux && !hideCancel) ? this.onCancelClick : null}
+                    onForgetClick={(myMember && myMember.membership === "leave") ? this.onForgetClick : null}
+                    onLeaveClick={(myMember && myMember.membership === "join") ? this.onLeaveClick : null}
+                />
                 { auxPanel }
                 { topUnreadMessagesBar }
                 { messagePanel }

src/components/structures/TimelinePanel.js

@@ -23,12 +23,14 @@ var Matrix = require("matrix-js-sdk");
 var EventTimeline = Matrix.EventTimeline;
 
 var sdk = require('../../index');
+import { _t } from '../../languageHandler';
 var MatrixClientPeg = require("../../MatrixClientPeg");
 var dis = require("../../dispatcher");
 var ObjectUtils = require('../../ObjectUtils');
 var Modal = require("../../Modal");
 var UserActivity = require("../../UserActivity");
 var KeyCode = require('../../KeyCode');
+import UserSettingsStore from '../../UserSettingsStore';
 
 var PAGINATE_SIZE = 20;
 var INITIAL_SIZE = 20;
@@ -122,7 +124,7 @@ var TimelinePanel = React.createClass({
         let initialReadMarker = null;
         if (this.props.manageReadMarkers) {
             const readmarker = this.props.timelineSet.room.getAccountData('m.fully_read');
-            if (readmarker){
+            if (readmarker) {
                 initialReadMarker = readmarker.getContent().event_id;
             } else {
                 initialReadMarker = this._getCurrentReadReceipt();
@@ -171,6 +173,12 @@ var TimelinePanel = React.createClass({
 
             // cache of matrixClient.getSyncState() (but from the 'sync' event)
             clientSyncState: MatrixClientPeg.get().getSyncState(),
+
+            // should the event tiles have twelve hour times
+            isTwelveHour: UserSettingsStore.getSyncedSetting('showTwelveHourTimestamps'),
+
+            // always show timestamps on event tiles?
+            alwaysShowTimestamps: UserSettingsStore.getSyncedSetting('alwaysShowTimestamps'),
         };
     },
 
@@ -907,14 +915,11 @@ var TimelinePanel = React.createClass({
                     });
                 };
             }
-            var message = "Tried to load a specific point in this room's timeline, but ";
-            if (error.errcode == 'M_FORBIDDEN') {
-                message += "you do not have permission to view the message in question.";
-            } else {
-                message += "was unable to find it.";
-            }
+            var message = (error.errcode == 'M_FORBIDDEN') 
+            	? _t("Tried to load a specific point in this room's timeline, but you do not have permission to view the message in question") + "."
+                : _t("Tried to load a specific point in this room's timeline, but was unable to find it") + ".";
             Modal.createDialog(ErrorDialog, {
-                title: "Failed to load timeline position",
+                title: _t("Failed to load timeline position"),
                 description: message,
                 onFinished: onFinished,
             });
@@ -1106,7 +1111,6 @@ var TimelinePanel = React.createClass({
         const forwardPaginating = (
             this.state.forwardPaginating || this.state.clientSyncState == 'PREPARED'
         );
-
         return (
             <MessagePanel ref="messagePanel"
                     hidden={ this.props.hidden }
@@ -1125,6 +1129,8 @@ var TimelinePanel = React.createClass({
                     onFillRequest={ this.onMessageListFillRequest }
                     onUnfillRequest={ this.onMessageListUnfillRequest }
                     opacity={ this.props.opacity }
+                    isTwelveHour={ this.state.isTwelveHour }
+                    alwaysShowTimestamps={ this.state.alwaysShowTimestamps }
                     className={ this.props.className }
                     tileShape={ this.props.tileShape }
             />

src/components/structures/UserSettings.js

@@ -29,7 +29,10 @@ const GeminiScrollbar = require('react-gemini-scrollbar');
 const Email = require('../../email');
 const AddThreepid = require('../../AddThreepid');
 const SdkConfig = require('../../SdkConfig');
+import Analytics from '../../Analytics';
 import AccessibleButton from '../views/elements/AccessibleButton';
+import { _t } from '../../languageHandler';
+import * as languageHandler from '../../languageHandler';
 import * as FormattingUtils from '../../utils/FormattingUtils';
 
 // if this looks like a release, use the 'version' from package.json; else use
@@ -54,6 +57,8 @@ const gHVersionLabel = function(repo, token='') {
 // Enumerate some simple 'flip a bit' UI settings (if any).
 // 'id' gives the key name in the im.vector.web.settings account data event
 // 'label' is how we describe it in the UI.
+// Warning: Each "label" string below must be added to i18n/strings/en_EN.json,
+// since they will be translated when rendered.
 const SETTINGS_LABELS = [
     {
         id: 'autoplayGifsAndVideos',
@@ -67,7 +72,6 @@ const SETTINGS_LABELS = [
         id: 'dontSendTypingNotifications',
         label: "Don't send typing notifications",
     },
-/*
     {
         id: 'alwaysShowTimestamps',
         label: 'Always show message timestamps',
@@ -80,6 +84,7 @@ const SETTINGS_LABELS = [
         id: 'useCompactLayout',
         label: 'Use compact timeline layout',
     },
+/*
     {
         id: 'useFixedWidthFont',
         label: 'Use fixed width font',
@@ -87,10 +92,25 @@ const SETTINGS_LABELS = [
 */
 ];
 
+const ANALYTICS_SETTINGS_LABELS = [
+    {
+        id: 'analyticsOptOut',
+        label: 'Opt out of analytics',
+        fn: function(checked) {
+            Analytics[checked ? 'disable' : 'enable']();
+        },
+    },
+];
+
+// Warning: Each "label" string below must be added to i18n/strings/en_EN.json,
+// since they will be translated when rendered.
 const CRYPTO_SETTINGS_LABELS = [
     {
         id: 'blacklistUnverifiedDevices',
         label: 'Never send encrypted messages to unverified devices from this device',
+        fn: function(checked) {
+            MatrixClientPeg.get().setGlobalBlacklistUnverifiedDevices(checked);
+        },
     },
     // XXX: this is here for documentation; the actual setting is managed via RoomSettings
     // {
@@ -200,6 +220,17 @@ module.exports = React.createClass({
         this._syncedSettings = syncedSettings;
 
         this._localSettings = UserSettingsStore.getLocalSettings();
+
+        if (PlatformPeg.get().isElectron()) {
+            const {ipcRenderer} = require('electron');
+
+            ipcRenderer.on('settings', this._electronSettings);
+            ipcRenderer.send('settings_get');
+        }
+
+        this.setState({
+            language: languageHandler.getCurrentLanguage(),
+        });
     },
 
     componentDidMount: function() {
@@ -219,6 +250,15 @@ module.exports = React.createClass({
         if (cli) {
             cli.removeListener("RoomMember.membership", this._onInviteStateChange);
         }
+
+        if (PlatformPeg.get().isElectron()) {
+            const {ipcRenderer} = require('electron');
+            ipcRenderer.removeListener('settings', this._electronSettings);
+        }
+    },
+
+    _electronSettings: function(ev, settings) {
+        this.setState({ electron_settings: settings });
     },
 
     _refreshMediaDevices: function() {
@@ -249,8 +289,8 @@ module.exports = React.createClass({
             const ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
             console.error("Failed to load user settings: " + error);
             Modal.createDialog(ErrorDialog, {
-                title: "Can't load user settings",
-                description: ((error && error.message) ? error.message : "Server may be unavailable or overloaded"),
+                title: _t("Can't load user settings"),
+                description: ((error && error.message) ? error.message : _t("Server may be unavailable or overloaded")),
             });
         });
     },
@@ -265,8 +305,8 @@ module.exports = React.createClass({
         if (MatrixClientPeg.get().isGuest()) {
             const NeedToRegisterDialog = sdk.getComponent("dialogs.NeedToRegisterDialog");
             Modal.createDialog(NeedToRegisterDialog, {
-                title: "Please Register",
-                description: "Guests can't set avatars. Please register.",
+                title: _t("Please Register"),
+                description: _t("Guests can't set avatars. Please register."),
             });
             return;
         }
@@ -291,8 +331,8 @@ module.exports = React.createClass({
             console.error("Failed to set avatar: " + err);
             const ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
             Modal.createDialog(ErrorDialog, {
-                title: "Failed to set avatar",
-                description: ((err && err.message) ? err.message : "Operation failed"),
+                title: _t("Failed to set avatar."),
+                description: ((err && err.message) ? err.message : _t("Operation failed")),
             });
         });
     },
@@ -300,19 +340,19 @@ module.exports = React.createClass({
     onLogoutClicked: function(ev) {
         const QuestionDialog = sdk.getComponent("dialogs.QuestionDialog");
         Modal.createDialog(QuestionDialog, {
-            title: "Sign out?",
+            title: _t("Sign out"),
             description:
                 <div>
-                    For security, logging out will delete any end-to-end encryption keys from this browser.
-
-                    If you want to be able to decrypt your conversation history from future Riot sessions,
-                    please export your room keys for safe-keeping.
+             { _t("For security, logging out will delete any end-to-end " +
+                  "encryption keys from this browser. If you want to be able " +
+                  "to decrypt your conversation history from future Riot sessions, " +
+                  "please export your room keys for safe-keeping.") }.
                 </div>,
-            button: "Sign out",
+            button: _t("Sign out"),
             extraButtons: [
                 <button key="export" className="mx_Dialog_primary"
                         onClick={this._onExportE2eKeysClicked}>
-                    Export E2E room keys
+                   { _t("Export E2E room keys") }
                 </button>,
             ],
             onFinished: (confirmed) => {
@@ -329,14 +369,14 @@ module.exports = React.createClass({
     onPasswordChangeError: function(err) {
         let errMsg = err.error || "";
         if (err.httpStatus === 403) {
-            errMsg = "Failed to change password. Is your password correct?";
+            errMsg = _t("Failed to change password. Is your password correct?");
         } else if (err.httpStatus) {
             errMsg += ` (HTTP status ${err.httpStatus})`;
         }
         const ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
         console.error("Failed to change password: " + errMsg);
         Modal.createDialog(ErrorDialog, {
-            title: "Error",
+            title: _t("Error"),
             description: errMsg,
         });
     },
@@ -344,10 +384,8 @@ module.exports = React.createClass({
     onPasswordChanged: function() {
         const ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
         Modal.createDialog(ErrorDialog, {
-            title: "Success",
-            description: `Your password was successfully changed. You will not
-                          receive push notifications on other devices until you
-                          log back in to them.`,
+            title: _t("Success"),
+            description: _t("Your password was successfully changed. You will not receive push notifications on other devices until you log back in to them") + ".",
         });
     },
 
@@ -373,8 +411,8 @@ module.exports = React.createClass({
         const emailAddress = this.refs.add_email_input.value;
         if (!Email.looksValid(emailAddress)) {
             Modal.createDialog(ErrorDialog, {
-                title: "Invalid Email Address",
-                description: "This doesn't appear to be a valid email address",
+                title: _t("Invalid Email Address"),
+                description: _t("This doesn't appear to be a valid email address"),
             });
             return;
         }
@@ -383,17 +421,17 @@ module.exports = React.createClass({
         // same here.
         this._addThreepid.addEmailAddress(emailAddress, true).done(() => {
             Modal.createDialog(QuestionDialog, {
-                title: "Verification Pending",
-                description: "Please check your email and click on the link it contains. Once this is done, click continue.",
-                button: 'Continue',
+                title: _t("Verification Pending"),
+                description: _t("Please check your email and click on the link it contains. Once this is done, click continue."),
+                button: _t('Continue'),
                 onFinished: this.onEmailDialogFinished,
             });
         }, (err) => {
             this.setState({email_add_pending: false});
             console.error("Unable to add email address " + emailAddress + " " + err);
             Modal.createDialog(ErrorDialog, {
-                title: "Unable to add email address",
-                description: ((err && err.message) ? err.message : "Operation failed"),
+                title: _t("Unable to add email address"),
+                description: ((err && err.message) ? err.message : _t("Operation failed")),
             });
         });
         ReactDOM.findDOMNode(this.refs.add_email_input).blur();
@@ -403,9 +441,9 @@ module.exports = React.createClass({
     onRemoveThreepidClicked: function(threepid) {
         const QuestionDialog = sdk.getComponent("dialogs.QuestionDialog");
         Modal.createDialog(QuestionDialog, {
-            title: "Remove Contact Information?",
-            description: "Remove " + threepid.address + "?",
-            button: 'Remove',
+            title: _t("Remove Contact Information?"),
+            description: _t("Remove %(threePid)s?", { threePid : threepid.address }),
+            button: _t('Remove'),
             onFinished: (submit) => {
                 if (submit) {
                     this.setState({
@@ -417,8 +455,8 @@ module.exports = React.createClass({
                         const ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
                         console.error("Unable to remove contact information: " + err);
                         Modal.createDialog(ErrorDialog, {
-                            title: "Unable to remove contact information",
-                            description: ((err && err.message) ? err.message : "Operation failed"),
+                            title: _t("Unable to remove contact information"),
+                            description: ((err && err.message) ? err.message : _t("Operation failed")),
                         });
                     }).done();
                 }
@@ -444,22 +482,22 @@ module.exports = React.createClass({
             this.setState({email_add_pending: false});
         }, (err) => {
             this.setState({email_add_pending: false});
-            if (err.errcode === 'M_THREEPID_AUTH_FAILED') {
+            if (err.errcode == 'M_THREEPID_AUTH_FAILED') {
                 const QuestionDialog = sdk.getComponent("dialogs.QuestionDialog");
-                let message = "Unable to verify email address. ";
-                message += "Please check your email and click on the link it contains. Once this is done, click continue.";
+                let message = _t("Unable to verify email address.") + " " +
+                              _t("Please check your email and click on the link it contains. Once this is done, click continue.");
                 Modal.createDialog(QuestionDialog, {
-                    title: "Verification Pending",
+                    title: _t("Verification Pending"),
                     description: message,
-                    button: 'Continue',
+                    button: _t('Continue'),
                     onFinished: this.onEmailDialogFinished,
                 });
             } else {
                 const ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
                 console.error("Unable to verify email address: " + err);
                 Modal.createDialog(ErrorDialog, {
-                    title: "Unable to verify email address",
-                    description: ((err && err.message) ? err.message : "Operation failed"),
+                    title: _t("Unable to verify email address."),
+                    description: ((err && err.message) ? err.message : _t("Operation failed")),
                 });
             }
         });
@@ -549,20 +587,43 @@ module.exports = React.createClass({
             <div>
                 <h3>Referral</h3>
                 <div className="mx_UserSettings_section">
-                    Refer a friend to Riot: <a href={href}>{href}</a>
+                    {_t("Refer a friend to Riot:")} <a href={href}>{href}</a>
                 </div>
             </div>
         );
     },
 
+    onLanguageChange: function(newLang) {
+        if(this.state.language !== newLang) {
+            UserSettingsStore.setLocalSetting('language', newLang);
+            this.setState({
+                language: newLang,
+            });
+            PlatformPeg.get().reload();
+        }
+    },
+
+    _renderLanguageSetting: function () {
+        const LanguageDropdown = sdk.getComponent('views.elements.LanguageDropdown');
+        return <div>
+            <label htmlFor="languageSelector">{_t('Interface Language')}</label>
+            <LanguageDropdown ref="language" onOptionChange={this.onLanguageChange}
+                          className="mx_UserSettings_language"
+                          value={this.state.language}
+            />
+        </div>;
+    },
+
     _renderUserInterfaceSettings: function() {
         return (
             <div>
-                <h3>User Interface</h3>
+                <h3>{ _t("User Interface") }</h3>
                 <div className="mx_UserSettings_section">
                     { this._renderUrlPreviewSelector() }
                     { SETTINGS_LABELS.map( this._renderSyncedSetting ) }
                     { THEMES.map( this._renderThemeSelector ) }
+                    { this._renderLanguageSetting() }
+
                 </div>
             </div>
         );
@@ -576,7 +637,7 @@ module.exports = React.createClass({
                    onChange={ (e) => UserSettingsStore.setUrlPreviewsDisabled(e.target.checked) }
             />
             <label htmlFor="urlPreviewsDisabled">
-                Disable inline URL previews by default
+                { _t("Disable inline URL previews by default") }
             </label>
         </div>;
     },
@@ -586,10 +647,15 @@ module.exports = React.createClass({
             <input id={ setting.id }
                    type="checkbox"
                    defaultChecked={ this._syncedSettings[setting.id] }
-                   onChange={ (e) => UserSettingsStore.setSyncedSetting(setting.id, e.target.checked) }
+                   onChange={
+                       (e) => {
+                           UserSettingsStore.setSyncedSetting(setting.id, e.target.checked);
+                           if (setting.fn) setting.fn(e.target.checked);
+                       }
+                   }
             />
             <label htmlFor={ setting.id }>
-                { setting.label }
+                { _t(setting.label) }
             </label>
         </div>;
     },
@@ -623,7 +689,7 @@ module.exports = React.createClass({
         const deviceId = client.deviceId;
         let identityKey = client.getDeviceEd25519Key();
         if (!identityKey) {
-             identityKey = "<not supported>";
+             identityKey = _t("<not supported>");
         } else {
             identityKey = FormattingUtils.formatCryptoKey(identityKey);
         }
@@ -635,18 +701,18 @@ module.exports = React.createClass({
                 <div className="mx_UserSettings_importExportButtons">
                     <AccessibleButton className="mx_UserSettings_button"
                             onClick={this._onExportE2eKeysClicked}>
-                        Export E2E room keys
+                        { _t("Export E2E room keys") }
                     </AccessibleButton>
                     <AccessibleButton className="mx_UserSettings_button"
                             onClick={this._onImportE2eKeysClicked}>
-                        Import E2E room keys
+                        { _t("Import E2E room keys") }
                     </AccessibleButton>
                 </div>
             );
         }
         return (
             <div>
-                <h3>Cryptography</h3>
+                <h3>{ _t("Cryptography") }</h3>
                 <div className="mx_UserSettings_section mx_UserSettings_cryptoSection">
                     <ul>
                         <li><label>Device ID:</label>             <span><code>{deviceId}</code></span></li>
@@ -662,7 +728,6 @@ module.exports = React.createClass({
     },
 
     _renderLocalSetting: function(setting) {
-        const client = MatrixClientPeg.get();
         return <div className="mx_UserSettings_toggle" key={ setting.id }>
             <input id={ setting.id }
                    type="checkbox"
@@ -670,14 +735,12 @@ module.exports = React.createClass({
                    onChange={
                         (e) => {
                             UserSettingsStore.setLocalSetting(setting.id, e.target.checked);
-                            if (setting.id === 'blacklistUnverifiedDevices') { // XXX: this is a bit ugly
-                                client.setGlobalBlacklistUnverifiedDevices(e.target.checked);
-                            }
+                            if (setting.fn) setting.fn(e.target.checked);
                         }
-                    }
+                   }
             />
             <label htmlFor={ setting.id }>
-                { setting.label }
+                { _t(setting.label) }
             </label>
         </div>;
     },
@@ -698,20 +761,31 @@ module.exports = React.createClass({
         }
         return (
             <div>
-                <h3>Bug Report</h3>
+                <h3>{ _t("Bug Report") }</h3>
                 <div className="mx_UserSettings_section">
-                    <p>Found a bug?</p>
+                    <p>{ _t("Found a bug?") }</p>
                     <button className="mx_UserSettings_button danger"
-                        onClick={this._onBugReportClicked}>Report it
+                        onClick={this._onBugReportClicked}>{_t('Report it')}
                     </button>
                 </div>
             </div>
         );
     },
 
+    _renderAnalyticsControl: function() {
+        return <div>
+            <h3>{ _t('Analytics') }</h3>
+            <div className="mx_UserSettings_section">
+                {_t('Riot collects anonymous analytics to allow us to improve the application.')}
+                {ANALYTICS_SETTINGS_LABELS.map( this._renderLocalSetting )}
+            </div>
+        </div>;
+    },
+
     _renderLabs: function() {
         // default to enabled if undefined
         if (this.props.enableLabs === false) return null;
+        UserSettingsStore.doTranslations();
 
         const features = UserSettingsStore.LABS_FEATURES.map((feature) => (
             <div key={feature.id} className="mx_UserSettings_toggle">
@@ -725,8 +799,8 @@ module.exports = React.createClass({
                             e.target.checked = false;
                             const NeedToRegisterDialog = sdk.getComponent("dialogs.NeedToRegisterDialog");
                             Modal.createDialog(NeedToRegisterDialog, {
-                                title: "Please Register",
-                                description: "Guests can't use labs features. Please register.",
+                                title: _t("Please Register"),
+                                description: _t("Guests can't use labs features. Please register."),
                             });
                             return;
                         }
@@ -739,9 +813,9 @@ module.exports = React.createClass({
         ));
         return (
             <div>
-                <h3>Labs</h3>
+                <h3>{ _t("Labs") }</h3>
                 <div className="mx_UserSettings_section">
-                    <p>These are experimental features that may break in unexpected ways. Use with caution.</p>
+                    <p>{ _t("These are experimental features that may break in unexpected ways") }. { _t("Use with caution") }.</p>
                     {features}
                 </div>
             </div>
@@ -753,10 +827,10 @@ module.exports = React.createClass({
         if (MatrixClientPeg.get().isGuest()) return null;
 
         return <div>
-            <h3>Deactivate Account</h3>
+            <h3>{ _t("Deactivate Account") }</h3>
                 <div className="mx_UserSettings_section">
                     <AccessibleButton className="mx_UserSettings_button danger"
-                        onClick={this._onDeactivateAccountClicked}>Deactivate my account
+                        onClick={this._onDeactivateAccountClicked}> { _t("Deactivate my account") }
                     </AccessibleButton>
                 </div>
         </div>;
@@ -764,11 +838,11 @@ module.exports = React.createClass({
 
     _renderClearCache: function() {
         return <div>
-            <h3>Clear Cache</h3>
+            <h3>{ _t("Clear Cache") }</h3>
                 <div className="mx_UserSettings_section">
                     <AccessibleButton className="mx_UserSettings_button danger"
                         onClick={this._onClearCacheClicked}>
-                        Clear Cache and Reload
+                        { _t("Clear Cache and Reload") }
                     </AccessibleButton>
                 </div>
         </div>;
@@ -791,19 +865,42 @@ module.exports = React.createClass({
             reject = (
                 <AccessibleButton className="mx_UserSettings_button danger"
                 onClick={this._onRejectAllInvitesClicked.bind(this, invitedRooms)}>
-                    Reject all {invitedRooms.length} invites
+                    {_t("Reject all %(invitedRooms)s invites", {invitedRooms: invitedRooms.length})}
                 </AccessibleButton>
             );
         }
 
         return <div>
-            <h3>Bulk Options</h3>
+            <h3>{ _t("Bulk Options") }</h3>
                 <div className="mx_UserSettings_section">
                     {reject}
                 </div>
         </div>;
     },
 
+    _renderElectronSettings: function() {
+        const settings = this.state.electron_settings;
+        if (!settings) return;
+
+        const {ipcRenderer} = require('electron');
+
+        return <div>
+            <h3>{ _t('Desktop specific') }</h3>
+            <div className="mx_UserSettings_section">
+                <div className="mx_UserSettings_toggle">
+                    <input type="checkbox"
+                           name="auto-launch"
+                           defaultChecked={settings['auto-launch']}
+                           onChange={(e) => {
+                               ipcRenderer.send('settings_set', 'auto-launch', e.target.checked);
+                           }}
+                    />
+                    <label htmlFor="auto-launch">{_t('Start automatically after system login')}</label>
+                </div>
+            </div>
+        </div>;
+    },
+
     _mapWebRtcDevicesToSpans: function(devices) {
         return Object.keys(devices).map(
             (deviceId) => <span key={deviceId}>{devices[deviceId]}</span>
@@ -904,7 +1001,8 @@ module.exports = React.createClass({
     },
 
     nameForMedium: function(medium) {
-        if (medium === 'msisdn') return 'Phone';
+        if (medium === 'msisdn') return _t('Phone');
+        if (medium === 'email') return _t('Email');
         return medium[0].toUpperCase() + medium.slice(1);
     },
 
@@ -953,7 +1051,7 @@ module.exports = React.createClass({
                         />
                     </div>
                     <div className="mx_UserSettings_threepidButton mx_filterFlipColor">
-                        <img src="img/cancel-small.svg" width="14" height="14" alt="Remove" onClick={this.onRemoveThreepidClicked.bind(this, val)} />
+                        <img src="img/cancel-small.svg" width="14" height="14" alt={ _t("Remove") } onClick={this.onRemoveThreepidClicked.bind(this, val)} />
                     </div>
                 </div>
             );
@@ -965,14 +1063,14 @@ module.exports = React.createClass({
             addEmailSection = (
                 <div className="mx_UserSettings_profileTableRow" key="_newEmail">
                     <div className="mx_UserSettings_profileLabelCell">
-                        <label>Email</label>
+                        <label>{_t('Email')}</label>
                     </div>
                     <div className="mx_UserSettings_profileInputCell">
                         <EditableText
                             ref="add_email_input"
                             className="mx_UserSettings_editable"
                             placeholderClassName="mx_UserSettings_threepidPlaceholder"
-                            placeholder={ "Add email address" }
+                            placeholder={ _t("Add email address") }
                             blurToCancel={ false }
                             onValueChanged={ this._onAddEmailEditFinished } />
                     </div>
@@ -994,7 +1092,7 @@ module.exports = React.createClass({
         if (MatrixClientPeg.get().isGuest()) {
             accountJsx = (
                 <div className="mx_UserSettings_button" onClick={this.onUpgradeClicked}>
-                    Create an account
+                    { _t("Create an account") }
                 </div>
             );
         } else {
@@ -1012,7 +1110,7 @@ module.exports = React.createClass({
         let notificationArea;
         if (!MatrixClientPeg.get().isGuest() && this.state.threepids !== undefined) {
             notificationArea = (<div>
-                <h3>Notifications</h3>
+                <h3>{ _t("Notifications") }</h3>
 
                 <div className="mx_UserSettings_section">
                     <Notifications threepids={this.state.threepids} brand={this.props.brand} />
@@ -1031,7 +1129,7 @@ module.exports = React.createClass({
         return (
             <div className="mx_UserSettings">
                 <SimpleRoomHeader
-                    title="Settings"
+                    title={ _t("Settings") }
                     collapsedRhs={ this.props.collapsedRhs }
                     onCancelClick={ this.props.onClose }
                 />
@@ -1039,13 +1137,13 @@ module.exports = React.createClass({
                 <GeminiScrollbar className="mx_UserSettings_body"
                                  autoshow={true}>
 
-                <h3>Profile</h3>
+                <h3>{ _t("Profile") }</h3>
 
                 <div className="mx_UserSettings_section">
                     <div className="mx_UserSettings_profileTable">
                         <div className="mx_UserSettings_profileTableRow">
                             <div className="mx_UserSettings_profileLabelCell">
-                                <label htmlFor="displayName">Display name</label>
+                                <label htmlFor="displayName">{ _t('Display name') }</label>
                             </div>
                             <div className="mx_UserSettings_profileInputCell">
                                 <ChangeDisplayName />
@@ -1062,7 +1160,7 @@ module.exports = React.createClass({
                         <div className="mx_UserSettings_avatarPicker_edit">
                             <label htmlFor="avatarInput" ref="file_label">
                                 <img src="img/camera.svg" className="mx_filterFlipColor"
-                                    alt="Upload avatar" title="Upload avatar"
+                                    alt={ _t("Upload avatar") } title={ _t("Upload avatar") }
                                     width="17" height="15" />
                             </label>
                             <input id="avatarInput" type="file" onChange={this.onAvatarSelected}/>
@@ -1070,12 +1168,12 @@ module.exports = React.createClass({
                     </div>
                 </div>
 
-                <h3>Account</h3>
+                <h3>{ _t("Account") }</h3>
 
-                <div className="mx_UserSettings_section">
+                <div className="mx_UserSettings_section cadcampoHide">
 
                     <AccessibleButton className="mx_UserSettings_logout mx_UserSettings_button" onClick={this.onLogoutClicked}>
-                        Sign out
+                        { _t("Sign out") }
                     </AccessibleButton>
 
                     {accountJsx}
@@ -1093,34 +1191,35 @@ module.exports = React.createClass({
                 {this._renderBulkOptions()}
                 {this._renderBugReport()}
 
-                <h3>Advanced</h3>
+                {PlatformPeg.get().isElectron() && this._renderElectronSettings()}
+
+                {this._renderAnalyticsControl()}
+
+                <h3>{ _t("Advanced") }</h3>
 
                 <div className="mx_UserSettings_section">
                     <div className="mx_UserSettings_advanced">
-                        Logged in as {this._me}
+                        { _t("Logged in as:") } {this._me}
                     </div>
                     <div className="mx_UserSettings_advanced">
-                        Access Token: <span className="mx_UserSettings_advanced_spoiler"
-                                            onClick={this._showSpoiler}
-                                            data-spoiler={ MatrixClientPeg.get().getAccessToken() }
-                        >&lt;click to reveal&gt;</span>
+                        {_t('Access Token:')} <span className="mx_UserSettings_advanced_spoiler" onClick={this._showSpoiler} data-spoiler={ MatrixClientPeg.get().getAccessToken() }>&lt;{ _t("click to reveal") }&gt;</span>
                     </div>
                     <div className="mx_UserSettings_advanced">
-                        Homeserver is { MatrixClientPeg.get().getHomeserverUrl() }
+                        { _t("Homeserver is") } { MatrixClientPeg.get().getHomeserverUrl() }
                     </div>
                     <div className="mx_UserSettings_advanced">
-                        Identity Server is { MatrixClientPeg.get().getIdentityServerUrl() }
+                        { _t("Identity Server is") } { MatrixClientPeg.get().getIdentityServerUrl() }
                     </div>
                     <div className="mx_UserSettings_advanced">
-                        matrix-react-sdk version: {(REACT_SDK_VERSION !== '<local>')
+                        {_t('matrix-react-sdk version:')} {(REACT_SDK_VERSION !== '<local>')
                             ? gHVersionLabel('matrix-org/matrix-react-sdk', REACT_SDK_VERSION)
                             : REACT_SDK_VERSION
                         }<br/>
-                        riot-web version: {(this.state.vectorVersion !== undefined)
+                        {_t('riot-web version:')} {(this.state.vectorVersion !== undefined)
                             ? gHVersionLabel('vector-im/riot-web', this.state.vectorVersion)
                             : 'unknown'
                         }<br/>
-                        olm version: {olmVersionString}<br/>
+                        { _t("olm version:") } {olmVersionString}<br/>
                     </div>
                 </div>
 

src/components/structures/login/ForgotPassword.js

@@ -17,6 +17,7 @@ limitations under the License.
 'use strict';
 
 var React = require('react');
+import { _t } from '../../../languageHandler';
 var sdk = require('../../../index');
 var Modal = require("../../../Modal");
 var MatrixClientPeg = require('../../../MatrixClientPeg');
@@ -54,7 +55,7 @@ module.exports = React.createClass({
                 progress: "sent_email"
             });
         }, (err) => {
-            this.showErrorDialog("Failed to send email: " + err.message);
+            this.showErrorDialog(_t('Failed to send email') + ": " + err.message);
             this.setState({
                 progress: null
             });
@@ -78,30 +79,33 @@ module.exports = React.createClass({
         ev.preventDefault();
 
         if (!this.state.email) {
-            this.showErrorDialog("The email address linked to your account must be entered.");
+            this.showErrorDialog(_t('The email address linked to your account must be entered.'));
         }
         else if (!this.state.password || !this.state.password2) {
-            this.showErrorDialog("A new password must be entered.");
+            this.showErrorDialog(_t('A new password must be entered.'));
         }
         else if (this.state.password !== this.state.password2) {
-            this.showErrorDialog("New passwords must match each other.");
+            this.showErrorDialog(_t('New passwords must match each other.'));
         }
         else {
             var QuestionDialog = sdk.getComponent("dialogs.QuestionDialog");
             Modal.createDialog(QuestionDialog, {
-                title: "Warning",
+                title: _t('Warning!'),
                 description:
                     <div>
-                        Resetting password will currently reset any end-to-end encryption keys on all devices,
-                        making encrypted chat history unreadable, unless you first export your room keys
-                        and re-import them afterwards.
-                        In future this <a href="https://github.com/vector-im/riot-web/issues/2671">will be improved</a>.
+                        { _t(
+                            'Resetting password will currently reset any ' +
+                            'end-to-end encryption keys on all devices, ' +
+                            'making encrypted chat history unreadable, ' + 
+                            'unless you first export your room keys and re-import ' +
+                            'them afterwards. In future this will be improved.'
+                        ) }
                     </div>,
-                button: "Continue",
+                button: _t('Continue'),
                 extraButtons: [
                     <button className="mx_Dialog_primary"
                             onClick={this._onExportE2eKeysClicked}>
-                        Export E2E room keys
+                        { _t('Export E2E room keys') }
                     </button>
                 ],
                 onFinished: (confirmed) => {
@@ -150,7 +154,7 @@ module.exports = React.createClass({
         var ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
         Modal.createDialog(ErrorDialog, {
             title: title,
-            description: body
+            description: body,
         });
     },
 
@@ -168,22 +172,20 @@ module.exports = React.createClass({
         else if (this.state.progress === "sent_email") {
             resetPasswordJsx = (
                 <div>
-                    An email has been sent to {this.state.email}. Once you&#39;ve followed
-                    the link it contains, click below.
+                    { _t('An email has been sent to') } {this.state.email}. { _t('Once you&#39;ve followed the link it contains, click below') }.
                     <br />
                     <input className="mx_Login_submit" type="button" onClick={this.onVerify}
-                        value="I have verified my email address" />
+                        value={ _t('I have verified my email address') } />
                 </div>
             );
         }
         else if (this.state.progress === "complete") {
             resetPasswordJsx = (
                 <div>
-                    <p>Your password has been reset.</p>
-                    <p>You have been logged out of all devices and will no longer receive push notifications.
-                    To re-enable notifications, sign in again on each device.</p>
+                    <p>{ _t('Your password has been reset') }.</p>
+                    <p>{ _t('You have been logged out of all devices and will no longer receive push notifications. To re-enable notifications, sign in again on each device') }.</p>
                     <input className="mx_Login_submit" type="button" onClick={this.props.onComplete}
-                        value="Return to login screen" />
+                        value={ _t('Return to login screen') } />
                 </div>
             );
         }
@@ -191,7 +193,7 @@ module.exports = React.createClass({
             resetPasswordJsx = (
             <div>
                 <div className="mx_Login_prompt">
-                    To reset your password, enter the email address linked to your account:
+                    { _t('To reset your password, enter the email address linked to your account') }:
                 </div>
                 <div>
                     <form onSubmit={this.onSubmitForm}>
@@ -199,21 +201,21 @@ module.exports = React.createClass({
                             name="reset_email" // define a name so browser's password autofill gets less confused
                             value={this.state.email}
                             onChange={this.onInputChanged.bind(this, "email")}
-                            placeholder="Email address" autoFocus />
+                            placeholder={ _t('Email address') } autoFocus />
                         <br />
                         <input className="mx_Login_field" ref="pass" type="password"
                             name="reset_password"
                             value={this.state.password}
                             onChange={this.onInputChanged.bind(this, "password")}
-                            placeholder="New password" />
+                            placeholder={ _t('New password') } />
                         <br />
                         <input className="mx_Login_field" ref="pass" type="password"
                             name="reset_password_confirm"
                             value={this.state.password2}
                             onChange={this.onInputChanged.bind(this, "password2")}
-                            placeholder="Confirm your new password" />
+                            placeholder={ _t('Confirm your new password') } />
                         <br />
-                        <input className="mx_Login_submit" type="submit" value="Send Reset Email" />
+                        <input className="mx_Login_submit" type="submit" value={ _t('Send Reset Email') } />
                     </form>
                     <ServerConfig ref="serverConfig"
                         withToggleButton={true}
@@ -230,7 +232,7 @@ module.exports = React.createClass({
                         Return to login
                     </a>
                     <a className="mx_Login_create" onClick={this.props.onRegisterClick} href="#">
-                        Create a new account
+                        { _t('Create an account') }
                     </a>
                     <LoginFooter />
                 </div>

src/components/structures/login/Login.js

@@ -18,8 +18,8 @@ limitations under the License.
 'use strict';
 
 import React from 'react';
+import { _t, _tJsx } from '../../../languageHandler';
 import ReactDOM from 'react-dom';
-import url from 'url';
 import sdk from '../../../index';
 import Login from '../../../Login';
 
@@ -223,14 +223,19 @@ module.exports = React.createClass({
                  !this.state.enteredHomeserverUrl.startsWith("http")))
             {
                 errorText = <span>
-                    Can't connect to homeserver via HTTP when an HTTPS URL is in your browser bar.
-                    Either use HTTPS or <a href='https://www.google.com/search?&q=enable%20unsafe%20scripts'>enable unsafe scripts</a>
+                    { _tJsx("Can't connect to homeserver via HTTP when an HTTPS URL is in your browser bar. " +
+                            "Either use HTTPS or <a>enable unsafe scripts</a>.",
+                      /<a>(.*?)<\/a>/,
+                      (sub) => { return <a href="https://www.google.com/search?&q=enable%20unsafe%20scripts">{ sub }</a>; }
+                    )}
                 </span>;
             }
             else {
                 errorText = <span>
-                    Can't connect to homeserver - please check your connectivity and ensure
-                    your <a href={ this.state.enteredHomeserverUrl }>homeserver's SSL certificate</a> is trusted.
+                    { _tJsx("Can't connect to homeserver - please check your connectivity and ensure your <a>homeserver's SSL certificate</a> is trusted.",
+                      /<a>(.*?)<\/a>/,
+                      (sub) => { return <a href={this.state.enteredHomeserverUrl}>{ sub }</a>; }
+                    )}
                 </span>;
             }
         }
@@ -242,12 +247,6 @@ module.exports = React.createClass({
         switch (step) {
             case 'm.login.password':
                 const PasswordLogin = sdk.getComponent('login.PasswordLogin');
-                // HSs that are not matrix.org may not be configured to have their
-                // domain name === domain part.
-                let hsDomain = url.parse(this.state.enteredHomeserverUrl).hostname;
-                if (hsDomain !== 'matrix.org') {
-                    hsDomain = null;
-                }
                 return (
                     <PasswordLogin
                         onSubmit={this.onPasswordLogin}
@@ -259,7 +258,6 @@ module.exports = React.createClass({
                         onPhoneNumberChanged={this.onPhoneNumberChanged}
                         onForgotPasswordClick={this.props.onForgotPasswordClick}
                         loginIncorrect={this.state.loginIncorrect}
-                        hsDomain={hsDomain}
                     />
                 );
             case 'm.login.cas':
@@ -273,8 +271,7 @@ module.exports = React.createClass({
                 }
                 return (
                     <div>
-                    Sorry, this homeserver is using a login which is not
-                    recognised ({step})
+                    { _t('Sorry, this homeserver is using a login which is not recognised ')}({step})
                     </div>
                 );
         }
@@ -291,7 +288,7 @@ module.exports = React.createClass({
         if (this.props.enableGuest) {
             loginAsGuestJsx =
                 <a className="mx_Login_create" onClick={this._onLoginAsGuestClick} href="#">
-                    Login as guest
+                    { _t('Login as guest')}
                 </a>;
         }
 
@@ -299,7 +296,7 @@ module.exports = React.createClass({
         if (this.props.onCancelClick) {
             returnToAppJsx =
                 <a className="mx_Login_create" onClick={this.props.onCancelClick} href="#">
-                    Return to app
+                    { _t('Return to app')}
                 </a>;
         }
 
@@ -308,7 +305,7 @@ module.exports = React.createClass({
                 <div className="mx_Login_box">
                     <LoginHeader />
                     <div>
-                        <h2>Sign in
+                        <h2>{ _t('Sign in')}
                             { loader }
                         </h2>
                         { this.componentForStep(this.state.currentFlow) }
@@ -324,7 +321,7 @@ module.exports = React.createClass({
                                 { this.state.errorText }
                         </div>
                         <a className="mx_Login_create" onClick={this.props.onRegisterClick} href="#">
-                            Create a new account
+                            { _t('Create an account')}
                         </a>
                         { loginAsGuestJsx }
                         { returnToAppJsx }

src/components/structures/login/PostRegistration.js

@@ -16,9 +16,10 @@ limitations under the License.
 
 'use strict';
 
-var React = require('react');
-var sdk = require('../../../index');
-var MatrixClientPeg = require('../../../MatrixClientPeg');
+import React from 'react';
+import sdk from '../../../index';
+import MatrixClientPeg from '../../../MatrixClientPeg';
+import { _t } from '../../../languageHandler';
 
 module.exports = React.createClass({
     displayName: 'PostRegistration',
@@ -64,12 +65,12 @@ module.exports = React.createClass({
                 <div className="mx_Login_box">
                     <LoginHeader />
                     <div className="mx_Login_profile">
-                        Set a display name:
+                        { _t('Set a display name:') }
                         <ChangeDisplayName />
-                        Upload an avatar:
+                        { _t('Upload an avatar:') }
                         <ChangeAvatar
                             initialAvatarUrl={this.state.avatarUrl} />
-                        <button onClick={this.props.onComplete}>Continue</button>
+                        <button onClick={this.props.onComplete}>{ _t('Continue') }</button>
                         {this.state.errorString}
                     </div>
                 </div>

src/components/structures/login/Registration.js

@@ -27,6 +27,7 @@ import MatrixClientPeg from '../../../MatrixClientPeg';
 import RegistrationForm from '../../views/login/RegistrationForm';
 import CaptchaForm from '../../views/login/CaptchaForm';
 import RtsClient from '../../../RtsClient';
+import { _t } from '../../../languageHandler';
 
 const MIN_PASSWORD_LENGTH = 6;
 
@@ -162,7 +163,7 @@ module.exports = React.createClass({
                     msisdn_available |= flow.stages.indexOf('m.login.msisdn') > -1;
                 }
                 if (!msisdn_available) {
-                    msg = "This server does not support authentication with a phone number";
+                    msg = _t('This server does not support authentication with a phone number.');
                 }
             }
             this.setState({
@@ -260,29 +261,29 @@ module.exports = React.createClass({
         var errMsg;
         switch (errCode) {
             case "RegistrationForm.ERR_PASSWORD_MISSING":
-                errMsg = "Missing password.";
+                errMsg = _t('Missing password.');
                 break;
             case "RegistrationForm.ERR_PASSWORD_MISMATCH":
-                errMsg = "Passwords don't match.";
+                errMsg = _t('Passwords don\'t match.');
                 break;
             case "RegistrationForm.ERR_PASSWORD_LENGTH":
-                errMsg = `Password too short (min ${MIN_PASSWORD_LENGTH}).`;
+                errMsg = _t('Password too short (min %(MIN_PASSWORD_LENGTH)s).', {MIN_PASSWORD_LENGTH: MIN_PASSWORD_LENGTH});
                 break;
             case "RegistrationForm.ERR_EMAIL_INVALID":
-                errMsg = "This doesn't look like a valid email address";
+                errMsg = _t('This doesn\'t look like a valid email address.');
                 break;
             case "RegistrationForm.ERR_PHONE_NUMBER_INVALID":
-                errMsg = "This doesn't look like a valid phone number";
+                errMsg = _t('This doesn\'t look like a valid phone number.');
                 break;
             case "RegistrationForm.ERR_USERNAME_INVALID":
-                errMsg = "User names may only contain letters, numbers, dots, hyphens and underscores.";
+                errMsg = _t('User names may only contain letters, numbers, dots, hyphens and underscores.');
                 break;
             case "RegistrationForm.ERR_USERNAME_BLANK":
-                errMsg = "You need to enter a user name";
+                errMsg = _t('You need to enter a user name.');
                 break;
             default:
                 console.error("Unknown error code: %s", errCode);
-                errMsg = "An unknown error occurred.";
+                errMsg = _t('An unknown error occurred.');
                 break;
         }
         this.setState({
@@ -400,7 +401,7 @@ module.exports = React.createClass({
         if (this.props.onCancelClick) {
             returnToAppJsx = (
                 <a className="mx_Login_create" onClick={this.props.onCancelClick} href="#">
-                    Return to app
+                    {_t('Return to app')}
                 </a>
             );
         }
@@ -413,10 +414,10 @@ module.exports = React.createClass({
                             this.state.teamSelected.domain + "/icon.png" :
                             null}
                     />
-                    <h2>Create an account</h2>
+                    <h2>{_t('Create an account')}</h2>
                     {registerBody}
                     <a className="mx_Login_create" onClick={this.props.onLoginClick} href="#">
-                        I already have an account
+                        {_t('I already have an account')}
                     </a>
                     {returnToAppJsx}
                     <LoginFooter />

src/components/views/create_room/CreateRoomButton.js

@@ -16,8 +16,8 @@ limitations under the License.
 
 'use strict';
 
-var React = require('react');
-
+import React from 'react';
+import { _t } from '../../../languageHandler';
 module.exports = React.createClass({
     displayName: 'CreateRoomButton',
     propTypes: {
@@ -36,7 +36,7 @@ module.exports = React.createClass({
 
     render: function() {
         return (
-            <button className="mx_CreateRoomButton" onClick={this.onClick}>Create Room</button>
+            <button className="mx_CreateRoomButton" onClick={this.onClick}>{_t("Create Room")}</button>
         );
     }
 });

src/components/views/dialogs/ChatCreateOrReuseDialog.js

@@ -86,7 +86,7 @@ export default class ChatCreateOrReuseDialog extends React.Component {
             <div className="mx_RoomTile_avatar">
                 <img src="img/create-big.svg" width="26" height="26" />
             </div>
-            <div className={labelClasses}><i>Start new chat</i></div>
+            <div className={labelClasses}><i>{_("Start new chat")}</i></div>
         </AccessibleButton>;
 
         const BaseDialog = sdk.getComponent('views.dialogs.BaseDialog');

src/components/views/dialogs/ChatInviteDialog.js

@@ -16,6 +16,7 @@ limitations under the License.
 
 import React from 'react';
 import classNames from 'classnames';
+import { _t } from '../../../languageHandler';
 import sdk from '../../../index';
 import { getAddressType, inviteMultipleToRoom } from '../../../Invite';
 import createRoom from '../../../createRoom';
@@ -26,14 +27,13 @@ import dis from '../../../dispatcher';
 import Modal from '../../../Modal';
 import AccessibleButton from '../elements/AccessibleButton';
 import q from 'q';
-import Fuse from 'fuse.js';
 
 const TRUNCATE_QUERY_LIST = 40;
 
 module.exports = React.createClass({
     displayName: "ChatInviteDialog",
     propTypes: {
-        title: React.PropTypes.string,
+        title: React.PropTypes.string.isRequired,
         description: React.PropTypes.oneOfType([
             React.PropTypes.element,
             React.PropTypes.string,
@@ -48,11 +48,7 @@ module.exports = React.createClass({
 
     getDefaultProps: function() {
         return {
-            title: "Start a chat",
-            description: "Who would you like to communicate with?",
             value: "",
-            placeholder: "Email, name or matrix ID",
-            button: "Start Chat",
             focus: true
         };
     },
@@ -77,19 +73,6 @@ module.exports = React.createClass({
             // Set the cursor at the end of the text input
             this.refs.textinput.value = this.props.value;
         }
-        // Create a Fuse instance for fuzzy searching this._userList
-        this._fuse = new Fuse(
-            // Use an empty list at first that will later be populated
-            // (see this._updateUserList)
-            [],
-            {
-                shouldSort: true,
-                location: 0, // The index of the query in the test string
-                distance: 5, // The distance away from location the query can be
-                // 0.0 = exact match, 1.0 = match anything
-                threshold: 0.3,
-            }
-        );
         this._updateUserList();
     },
 
@@ -178,7 +161,7 @@ module.exports = React.createClass({
     },
 
     onQueryChanged: function(ev) {
-        const query = ev.target.value;
+        const query = ev.target.value.toLowerCase();
         let queryList = [];
 
         if (query.length < 2) {
@@ -191,24 +174,27 @@ module.exports = React.createClass({
         this.queryChangedDebouncer = setTimeout(() => {
             // Only do search if there is something to search
             if (query.length > 0 && query != '@') {
-                // Weighted keys prefer to match userIds when first char is @
-                this._fuse.options.keys = [{
-                    name: 'displayName',
-                    weight: query[0] === '@' ? 0.1 : 0.9,
-                },{
-                    name: 'userId',
-                    weight: query[0] === '@' ? 0.9 : 0.1,
-                }];
-                queryList = this._fuse.search(query).map((user) => {
+                this._userList.forEach((user) => {
+                    if (user.userId.toLowerCase().indexOf(query) === -1 &&
+                        user.displayName.toLowerCase().indexOf(query) === -1
+                    ) {
+                        return;
+                    }
+
                     // Return objects, structure of which is defined
                     // by InviteAddressType
-                    return {
+                    queryList.push({
                         addressType: 'mx',
                         address: user.userId,
                         displayName: user.displayName,
                         avatarMxc: user.avatarUrl,
                         isKnown: true,
-                    }
+                        order: user.getLastActiveTs(),
+                    });
+                });
+
+                queryList = queryList.sort((a,b) => {
+                    return a.order < b.order;
                 });
 
                 // If the query is a valid address, add an entry for that
@@ -286,8 +272,8 @@ module.exports = React.createClass({
         if (MatrixClientPeg.get().isGuest()) {
             var NeedToRegisterDialog = sdk.getComponent("dialogs.NeedToRegisterDialog");
             Modal.createDialog(NeedToRegisterDialog, {
-                title: "Please Register",
-                description: "Guest users can't invite users. Please register."
+                title: _t("Please Register"),
+                description: _t("Guest users can't invite users. Please register."),
             });
             return;
         }
@@ -308,8 +294,8 @@ module.exports = React.createClass({
                 console.error(err.stack);
                 var ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
                 Modal.createDialog(ErrorDialog, {
-                    title: "Failed to invite",
-                    description: ((err && err.message) ? err.message : "Operation failed"),
+                    title: _t("Failed to invite"),
+                    description: ((err && err.message) ? err.message : _t("Operation failed")),
                 });
                 return null;
             })
@@ -321,8 +307,8 @@ module.exports = React.createClass({
                 console.error(err.stack);
                 var ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
                 Modal.createDialog(ErrorDialog, {
-                    title: "Failed to invite user",
-                    description: ((err && err.message) ? err.message : "Operation failed"),
+                    title: _t("Failed to invite user"),
+                    description: ((err && err.message) ? err.message : _t("Operation failed")),
                 });
                 return null;
             })
@@ -342,8 +328,8 @@ module.exports = React.createClass({
                 console.error(err.stack);
                 var ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
                 Modal.createDialog(ErrorDialog, {
-                    title: "Failed to invite",
-                    description: ((err && err.message) ? err.message : "Operation failed"),
+                    title: _t("Failed to invite"),
+                    description: ((err && err.message) ? err.message : _t("Operation failed")),
                 });
                 return null;
             })
@@ -354,7 +340,7 @@ module.exports = React.createClass({
         this.props.onFinished(true, addrTexts);
     },
 
-    _updateUserList: new rate_limited_func(function() {
+    _updateUserList: function() {
         // Get all the users
         this._userList = MatrixClientPeg.get().getUsers();
         // Remove current user
@@ -362,9 +348,7 @@ module.exports = React.createClass({
             return u.userId === MatrixClientPeg.get().credentials.userId;
         });
         this._userList.splice(meIx, 1);
-
-        this._fuse.set(this._userList);
-    }, 500),
+    },
 
     _isOnInviteList: function(uid) {
         for (let i = 0; i < this.state.inviteList.length; i++) {
@@ -401,7 +385,7 @@ module.exports = React.createClass({
         if (errorList.length > 0) {
             var ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
             Modal.createDialog(ErrorDialog, {
-                title: "Failed to invite the following users to the " + room.name + " room:",
+                title: _t("Failed to invite the following users to the %(roomName)s room:", {roomName: room.name}),
                 description: errorList.join(", "),
             });
         }

src/components/views/dialogs/ConfirmRedactDialog.js

@@ -17,6 +17,7 @@ limitations under the License.
 import React from 'react';
 import sdk from '../../../index';
 import classnames from 'classnames';
+import { _t } from '../../../languageHandler';
 
 /*
  * A dialog for confirming a redaction.
@@ -42,7 +43,7 @@ export default React.createClass({
     render: function() {
         const BaseDialog = sdk.getComponent('views.dialogs.BaseDialog');
 
-        const title = "Confirm Redaction";
+        const title = _t("Confirm Removal");
 
         const confirmButtonClass = classnames({
             'mx_Dialog_primary': true,
@@ -55,16 +56,16 @@ export default React.createClass({
                 title={title}
             >
                 <div className="mx_Dialog_content">
-                    Are you sure you wish to redact (delete) this event?
-                    Note that if you redact a room name or topic change, it could undo the change.
+                    {_t("Are you sure you wish to remove (delete) this event? " +
+                        "Note that if you delete a room name or topic change, it could undo the change.")}
                 </div>
                 <div className="mx_Dialog_buttons">
                     <button className={confirmButtonClass} onClick={this.onOk}>
-                        Redact
+                        {_t("Remove")}
                     </button>
 
                     <button onClick={this.onCancel}>
-                        Cancel
+                        {_t("Cancel")}
                     </button>
                 </div>
             </BaseDialog>

src/components/views/dialogs/ConfirmUserActionDialog.js

@@ -16,6 +16,7 @@ limitations under the License.
 
 import React from 'react';
 import sdk from '../../../index';
+import { _t } from '../../../languageHandler';
 import classnames from 'classnames';
 
 /*
@@ -69,7 +70,7 @@ export default React.createClass({
         const BaseDialog = sdk.getComponent('views.dialogs.BaseDialog');
         const MemberAvatar = sdk.getComponent("views.avatars.MemberAvatar");
 
-        const title = this.props.action + " this person?";
+        const title = _t("%(actionVerb)s this person?", { actionVerb: this.props.action});
         const confirmButtonClass = classnames({
             'mx_Dialog_primary': true,
             'danger': this.props.danger,
@@ -82,7 +83,7 @@ export default React.createClass({
                     <form onSubmit={this.onOk}>
                         <input className="mx_ConfirmUserActionDialog_reasonField"
                             ref={this._collectReasonField}
-                            placeholder="Reason"
+                            placeholder={ _t("Reason") }
                             autoFocus={true}
                         />
                     </form>
@@ -111,7 +112,7 @@ export default React.createClass({
                     </button>
 
                     <button onClick={this.onCancel}>
-                        Cancel
+                        { _t("Cancel") }
                     </button>
                 </div>
             </BaseDialog>

src/components/views/dialogs/DeactivateAccountDialog.js

@@ -20,6 +20,7 @@ import sdk from '../../../index';
 import MatrixClientPeg from '../../../MatrixClientPeg';
 import * as Lifecycle from '../../../Lifecycle';
 import Velocity from 'velocity-vector';
+import { _t } from '../../../languageHandler';
 
 export default class DeactivateAccountDialog extends React.Component {
     constructor(props, context) {
@@ -56,10 +57,10 @@ export default class DeactivateAccountDialog extends React.Component {
             Lifecycle.onLoggedOut();
             this.props.onFinished(false);
         }, (err) => {
-            let errStr = 'Unknown error';
+            let errStr = _t('Unknown error');
             // https://matrix.org/jira/browse/SYN-744
             if (err.httpStatus == 401 || err.httpStatus == 403) {
-                errStr = 'Incorrect password';
+                errStr = _t('Incorrect password');
                 Velocity(this._passwordField, "callout.shake", 300);
             }
             this.setState({
@@ -91,23 +92,23 @@ export default class DeactivateAccountDialog extends React.Component {
         let cancelButton = null;
         if (!this.state.busy) {
             cancelButton = <button onClick={this._onCancel} autoFocus={true}>
-                Cancel
+                {_t("Cancel")}
             </button>;
         }
 
         return (
             <div className="mx_DeactivateAccountDialog">
                 <div className="mx_Dialog_title danger">
-                    Deactivate Account
+                    {_t("Deactivate Account")}
                 </div>
                 <div className="mx_Dialog_content">
-                    <p>This will make your account permanently unusable. You will not be able to re-register the same user ID.</p>
+                    <p>{_t("This will make your account permanently unusable. You will not be able to re-register the same user ID.")}</p>
 
-                    <p>This action is irreversible.</p>
+                    <p>{_t("This action is irreversible.")}</p>
 
-                    <p>To continue, please enter your password.</p>
+                    <p>{_t("To continue, please enter your password.")}</p>
 
-                    <p>Password:</p>
+                    <p>{_t("Password")}:</p>
                     <input
                         type="password"
                         onChange={this._onPasswordFieldChange}

src/components/views/dialogs/DeviceVerifyDialog.js

@@ -19,6 +19,7 @@ import React from 'react';
 import MatrixClientPeg from '../../../MatrixClientPeg';
 import sdk from '../../../index';
 import * as FormattingUtils from '../../../utils/FormattingUtils';
+import { _t } from '../../../languageHandler';
 
 export default function DeviceVerifyDialog(props) {
     const QuestionDialog = sdk.getComponent("dialogs.QuestionDialog");
@@ -27,25 +28,25 @@ export default function DeviceVerifyDialog(props) {
     const body = (
         <div>
             <p>
-                To verify that this device can be trusted, please contact its
-                owner using some other means (e.g. in person or a phone call)
-                and ask them whether the key they see in their User Settings
-                for this device matches the key below:
+                {_t("To verify that this device can be trusted, please contact its " +
+                    "owner using some other means (e.g. in person or a phone call) " +
+                    "and ask them whether the key they see in their User Settings " +
+                    "for this device matches the key below:")}
             </p>
             <div className="mx_UserSettings_cryptoSection">
                 <ul>
-                    <li><label>Device name:</label> <span>{ props.device.getDisplayName() }</span></li>
-                    <li><label>Device ID:</label> <span><code>{ props.device.deviceId}</code></span></li>
-                    <li><label>Device key:</label> <span><code><b>{ key }</b></code></span></li>
+                    <li><label>{_t("Device name")}:</label> <span>{ props.device.getDisplayName() }</span></li>
+                    <li><label>{_t("Device ID")}:</label> <span><code>{ props.device.deviceId}</code></span></li>
+                    <li><label>{_t("Device key")}:</label> <span><code><b>{ key }</b></code></span></li>
                 </ul>
             </div>
             <p>
-                If it matches, press the verify button below.
-                If it doesnt, then someone else is intercepting this device
-                and you probably want to press the blacklist button instead.
+                {_t("If it matches, press the verify button below. " +
+                    "If it doesn't, then someone else is intercepting this device " +
+                    "and you probably want to press the blacklist button instead.")}
             </p>
             <p>
-                In future this verification process will be more sophisticated.
+                {_t("In future this verification process will be more sophisticated.")}
             </p>
         </div>
     );
@@ -61,9 +62,9 @@ export default function DeviceVerifyDialog(props) {
 
     return (
         <QuestionDialog
-            title="Verify device"
+            title={_t("Verify device")}
             description={body}
-            button="I verify that the keys match"
+            button={_t("I verify that the keys match")}
             onFinished={onFinished}
         />
     );

src/components/views/dialogs/ErrorDialog.js

@@ -27,6 +27,7 @@ limitations under the License.
 
 import React from 'react';
 import sdk from '../../../index';
+import { _t } from '../../../languageHandler';
 
 export default React.createClass({
     displayName: 'ErrorDialog',
@@ -43,10 +44,10 @@ export default React.createClass({
 
     getDefaultProps: function() {
         return {
-            title: "Error",
-            description: "An error has occurred.",
-            button: "OK",
             focus: true,
+            title: null,
+            description: null,
+            button: null,
         };
     },
 
@@ -60,13 +61,13 @@ export default React.createClass({
         const BaseDialog = sdk.getComponent('views.dialogs.BaseDialog');
         return (
             <BaseDialog className="mx_ErrorDialog" onFinished={this.props.onFinished}
-                    title={this.props.title}>
+                    title={this.props.title || _t('Error')}>
                 <div className="mx_Dialog_content">
-                    {this.props.description}
+                    {this.props.description || _t('An error has occurred.')}
                 </div>
                 <div className="mx_Dialog_buttons">
                     <button ref="button" className="mx_Dialog_primary" onClick={this.props.onFinished}>
-                        {this.props.button}
+                        {this.props.button || _t('OK')}
                     </button>
                 </div>
             </BaseDialog>

src/components/views/dialogs/InteractiveAuthDialog.js

@@ -20,6 +20,7 @@ import Matrix from 'matrix-js-sdk';
 import React from 'react';
 
 import sdk from '../../../index';
+import { _t } from '../../../languageHandler';
 
 import AccessibleButton from '../elements/AccessibleButton';
 
@@ -46,12 +47,6 @@ export default React.createClass({
         title: React.PropTypes.string,
     },
 
-    getDefaultProps: function() {
-        return {
-            title: "Authentication",
-        };
-    },
-
     getInitialState: function() {
         return {
             authError: null,
@@ -105,7 +100,7 @@ export default React.createClass({
         return (
             <BaseDialog className="mx_InteractiveAuthDialog"
                 onFinished={this.props.onFinished}
-                title={this.state.authError ? 'Error' : this.props.title}
+                title={this.state.authError ? 'Error' : (this.props.title || _t('Authentication'))}
             >
                 {content}
             </BaseDialog>

src/components/views/dialogs/NeedToRegisterDialog.js

@@ -26,6 +26,7 @@ limitations under the License.
 import React from 'react';
 import dis from '../../../dispatcher';
 import sdk from '../../../index';
+import { _t } from '../../../languageHandler';
 
 module.exports = React.createClass({
     displayName: 'NeedToRegisterDialog',
@@ -38,13 +39,6 @@ module.exports = React.createClass({
         onFinished: React.PropTypes.func.isRequired,
     },
 
-    getDefaultProps: function() {
-        return {
-            title: "Registration required",
-            description: "A registered account is required for this action",
-        };
-    },
-
     onRegisterClicked: function() {
         dis.dispatch({
             action: "start_upgrade_registration",
@@ -59,10 +53,10 @@ module.exports = React.createClass({
         return (
             <BaseDialog className="mx_NeedToRegisterDialog"
                 onFinished={this.props.onFinished}
-                title={this.props.title}
+                title={this.props.title || _t('Registration required')}
             >
                 <div className="mx_Dialog_content">
-                    {this.props.description}
+                    {this.props.description || _t('A registered account is required for this action')}
                 </div>
                 <div className="mx_Dialog_buttons">
                     <button className="mx_Dialog_primary" onClick={this.props.onFinished} autoFocus={true}>

src/components/views/dialogs/QuestionDialog.js

@@ -16,6 +16,7 @@ limitations under the License.
 
 import React from 'react';
 import sdk from '../../../index';
+import { _t } from '../../../languageHandler';
 
 export default React.createClass({
     displayName: 'QuestionDialog',
@@ -33,7 +34,6 @@ export default React.createClass({
             title: "",
             description: "",
             extraButtons: null,
-            button: "OK",
             focus: true,
             hasCancelButton: true,
         };
@@ -64,7 +64,7 @@ export default React.createClass({
                 </div>
                 <div className="mx_Dialog_buttons">
                     <button className="mx_Dialog_primary" onClick={this.onOk} autoFocus={this.props.focus}>
-                        {this.props.button}
+                        {this.props.button || _t('OK')}
                     </button>
                     {this.props.extraButtons}
                     {cancelButton}

src/components/views/dialogs/SessionRestoreErrorDialog.js

@@ -18,6 +18,7 @@ import React from 'react';
 import sdk from '../../../index';
 import SdkConfig from '../../../SdkConfig';
 import Modal from '../../../Modal';
+import { _t } from '../../../languageHandler';
 
 
 export default React.createClass({
@@ -51,21 +52,21 @@ export default React.createClass({
 
         return (
             <BaseDialog className="mx_ErrorDialog" onFinished={this.props.onFinished}
-                    title='Unable to restore session'>
+                    title={_t('Unable to restore session')}>
                 <div className="mx_Dialog_content">
-                    <p>We encountered an error trying to restore your previous session. If
-                    you continue, you will need to log in again, and encrypted chat
-                    history will be unreadable.</p>
+                    <p>{_t("We encountered an error trying to restore your previous session. If " +
+                    "you continue, you will need to log in again, and encrypted chat " +
+                    "history will be unreadable.")}</p>
 
-                    <p>If you have previously used a more recent version of Riot, your session
-                    may be incompatible with this version. Close this window and return
-                    to the more recent version.</p>
+                    <p>{_t("If you have previously used a more recent version of Riot, your session " +
+                    "may be incompatible with this version. Close this window and return " +
+                    "to the more recent version.")}</p>
 
                     {bugreport}
                 </div>
                 <div className="mx_Dialog_buttons">
                     <button className="mx_Dialog_primary" onClick={this._continueClicked}>
-                        Continue anyway
+                        {_t("Continue anyway")}
                     </button>
                 </div>
             </BaseDialog>

src/components/views/dialogs/SetDisplayNameDialog.js

@@ -18,6 +18,8 @@ import React from 'react';
 import sdk from '../../../index';
 import MatrixClientPeg from '../../../MatrixClientPeg';
 
+import { _t } from '../../../languageHandler';
+
 /**
  * Prompt the user to set a display name.
  *
@@ -64,11 +66,11 @@ export default React.createClass({
         return (
             <BaseDialog className="mx_SetDisplayNameDialog"
                 onFinished={this.props.onFinished}
-                title="Set a Display Name"
+                title={_t("Set a Display Name")}
             >
                 <div className="mx_Dialog_content">
-                    Your display name is how you'll appear to others when you speak in rooms.<br/>
-                    What would you like it to be?
+                    {_t("Your display name is how you'll appear to others when you speak in rooms. " +
+                    "What would you like it to be?")}
                 </div>
                 <form onSubmit={this.onFormSubmit}>
                     <div className="mx_Dialog_content">

src/components/views/dialogs/TextInputDialog.js

@@ -16,6 +16,7 @@ limitations under the License.
 
 import React from 'react';
 import sdk from '../../../index';
+import { _t } from '../../../languageHandler';
 
 export default React.createClass({
     displayName: 'TextInputDialog',
@@ -36,7 +37,6 @@ export default React.createClass({
             title: "",
             value: "",
             description: "",
-            button: "OK",
             focus: true,
         };
     },
@@ -73,7 +73,7 @@ export default React.createClass({
                 </div>
                 <div className="mx_Dialog_buttons">
                     <button onClick={this.onCancel}>
-                        Cancel
+                        { _t("Cancel") }
                     </button>
                     <button className="mx_Dialog_primary" onClick={this.onOk}>
                         {this.props.button}

src/components/views/dialogs/UnknownDeviceDialog.js

@@ -20,6 +20,7 @@ import dis from '../../../dispatcher';
 import MatrixClientPeg from '../../../MatrixClientPeg';
 import GeminiScrollbar from 'react-gemini-scrollbar';
 import Resend from '../../../Resend';
+import { _t } from '../../../languageHandler';
 
 function DeviceListEntry(props) {
     const {userId, device} = props;
@@ -120,17 +121,17 @@ export default React.createClass({
         if (blacklistUnverified) {
             warning = (
                 <h4>
-                    You are currently blacklisting unverified devices; to send
-                    messages to these devices you must verify them.
+                    {_t("You are currently blacklisting unverified devices; to send " +
+                    "messages to these devices you must verify them.")}
                 </h4>
             );
         } else {
             warning = (
                 <div>
                     <p>
-                        We recommend you go through the verification process
-                        for each device to confirm they belong to their legitimate owner,
-                        but you can resend the message without verifying if you prefer.
+                        {_t("We recommend you go through the verification process " +
+                            "for each device to confirm they belong to their legitimate owner, " +
+                            "but you can resend the message without verifying if you prefer.")}
                     </p>
                 </div>
             );
@@ -149,10 +150,10 @@ export default React.createClass({
             >
                 <GeminiScrollbar autoshow={false} className="mx_Dialog_content">
                     <h4>
-                        "{this.props.room.name}" contains devices that you haven't seen before.
+                        {_t('"%(RoomName)s" contains devices that you haven\'t seen before.', {RoomName: this.props.room.name})}
                     </h4>
                     { warning }
-                    Unknown devices:
+                    {_t("Unknown devices")}:
 
                     <UnknownDeviceList devices={this.props.devices} />
                 </GeminiScrollbar>

src/components/views/elements/AddressTile.js

@@ -16,12 +16,13 @@ limitations under the License.
 
 'use strict';
 
-var React = require('react');
-var classNames = require('classnames');
-var sdk = require("../../../index");
-var Invite = require("../../../Invite");
-var MatrixClientPeg = require("../../../MatrixClientPeg");
-var Avatar = require('../../../Avatar');
+import React from 'react';
+import classNames from 'classnames';
+import sdk from "../../../index";
+import Invite from "../../../Invite";
+import MatrixClientPeg from "../../../MatrixClientPeg";
+import Avatar from '../../../Avatar';
+import { _t } from '../../../languageHandler';
 
 // React PropType definition for an object describing
 // an address that can be invited to a room (which
@@ -142,7 +143,7 @@ export default React.createClass({
             });
 
             info = (
-                <div className={unknownClasses}>Unknown Address</div>
+                <div className={unknownClasses}>{_t("Unknown Address")}</div>
             );
         }
 

src/components/views/elements/DeviceVerifyButtons.js

@@ -18,6 +18,7 @@ import React from 'react';
 import MatrixClientPeg from '../../../MatrixClientPeg';
 import sdk from '../../../index';
 import Modal from '../../../Modal';
+import { _t } from '../../../languageHandler';
 
 export default React.createClass({
     displayName: 'DeviceVerifyButtons',
@@ -82,14 +83,14 @@ export default React.createClass({
             blacklistButton = (
                 <button className="mx_MemberDeviceInfo_textButton mx_MemberDeviceInfo_unblacklist"
                   onClick={this.onUnblacklistClick}>
-                    Unblacklist
+                    {_t("Unblacklist")}
                 </button>
             );
         } else {
             blacklistButton = (
                 <button className="mx_MemberDeviceInfo_textButton mx_MemberDeviceInfo_blacklist"
                   onClick={this.onBlacklistClick}>
-                    Blacklist
+                    {_t("Blacklist")}
                 </button>
             );
         }
@@ -98,14 +99,14 @@ export default React.createClass({
             verifyButton = (
                 <button className="mx_MemberDeviceInfo_textButton mx_MemberDeviceInfo_unverify"
                   onClick={this.onUnverifyClick}>
-                    Unverify
+                    {_t("Unverify")}
                 </button>
             );
         } else {
             verifyButton = (
                 <button className="mx_MemberDeviceInfo_textButton mx_MemberDeviceInfo_verify"
                   onClick={this.onVerifyClick}>
-                    Verify...
+                    {_t("Verify...")}
                 </button>
             );
         }

src/components/views/elements/Dropdown.js

@@ -17,6 +17,7 @@ limitations under the License.
 import React from 'react';
 import classnames from 'classnames';
 import AccessibleButton from './AccessibleButton';
+import { _t } from '../../../languageHandler';
 
 class MenuOption extends React.Component {
     constructor(props) {
@@ -255,7 +256,7 @@ export default class Dropdown extends React.Component {
         });
         if (options.length === 0) {
             return [<div key="0" className="mx_Dropdown_option">
-                No results
+                {_t("No results")}
             </div>];
         }
         return options;

src/components/views/elements/LanguageDropdown.js

@@ -0,0 +1,121 @@
+/*
+Copyright 2017 Marcel Radzio (MTRNord)
+Copyright 2017 Vector Creations Ltd.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React from 'react';
+
+import sdk from '../../../index';
+import UserSettingsStore from '../../../UserSettingsStore';
+import { _t } from '../../../languageHandler';
+import * as languageHandler from '../../../languageHandler';
+
+function languageMatchesSearchQuery(query, language) {
+    if (language.label.toUpperCase().indexOf(query.toUpperCase()) == 0) return true;
+    if (language.value.toUpperCase() == query.toUpperCase()) return true;
+    return false;
+}
+
+export default class LanguageDropdown extends React.Component {
+    constructor(props) {
+        super(props);
+        this._onSearchChange = this._onSearchChange.bind(this);
+
+        this.state = {
+            searchQuery: '',
+            langs: null,
+        }
+    }
+
+    componentWillMount() {
+        languageHandler.getAllLanguagesFromJson().then((langs) => {
+            langs.sort(function(a, b){
+                if(a.label < b.label) return -1;
+                if(a.label > b.label) return 1;
+                return 0;
+            });
+            this.setState({langs});
+        }).catch(() => {
+            this.setState({langs: ['en']});
+        }).done();
+
+        if (!this.props.value) {
+            // If no value is given, we start with the first
+            // country selected, but our parent component
+            // doesn't know this, therefore we do this.
+            const _localSettings = UserSettingsStore.getLocalSettings();
+            if (_localSettings.hasOwnProperty('language')) {
+              this.props.onOptionChange(_localSettings.language);
+            }else {
+              const language = languageHandler.normalizeLanguageKey(languageHandler.getLanguageFromBrowser());
+              this.props.onOptionChange(language);
+            }
+        }
+    }
+
+    _onSearchChange(search) {
+        this.setState({
+            searchQuery: search,
+        });
+    }
+
+    render() {
+        if (this.state.langs === null) {
+            const Spinner = sdk.getComponent('elements.Spinner');
+            return <Spinner />;
+        }
+
+        const Dropdown = sdk.getComponent('elements.Dropdown');
+
+        let displayedLanguages;
+        if (this.state.searchQuery) {
+            displayedLanguages = this.state.langs.filter((lang) => {
+                return languageMatchesSearchQuery(this.state.searchQuery, lang);
+            });
+        } else {
+            displayedLanguages = this.state.langs;
+        }
+
+        const options = displayedLanguages.map((language) => {
+            return <div key={language.value}>
+                {language.label}
+            </div>;
+        });
+
+        // default value here too, otherwise we need to handle null / undefined
+        // values between mounting and the initial value propgating
+        let value = null;
+        const _localSettings = UserSettingsStore.getLocalSettings();
+        if (_localSettings.hasOwnProperty('language')) {
+          value = this.props.value || _localSettings.language;
+        } else {
+          const language = navigator.language || navigator.userLanguage;
+          value = this.props.value || language;
+        }
+
+        return <Dropdown className={this.props.className}
+            onOptionChange={this.props.onOptionChange} onSearchChange={this._onSearchChange}
+            searchEnabled={true} value={value}
+        >
+            {options}
+        </Dropdown>
+    }
+}
+
+LanguageDropdown.propTypes = {
+    className: React.PropTypes.string,
+    onOptionChange: React.PropTypes.func.isRequired,
+    value: React.PropTypes.string,
+};

src/components/views/elements/MemberEventListSummary.js

@@ -15,6 +15,7 @@ limitations under the License.
 */
 import React from 'react';
 const MemberAvatar = require('../avatars/MemberAvatar.js');
+import { _t } from '../../../languageHandler';
 
 module.exports = React.createClass({
     displayName: 'MemberEventListSummary',
@@ -203,30 +204,146 @@ module.exports = React.createClass({
      * @param {boolean} plural whether there were multiple users undergoing the same
      * transition.
      * @param {number} repeats the number of times the transition was repeated in a row.
-     * @returns {string} the written English equivalent of the transition.
+     * @returns {string} the written Human Readable equivalent of the transition.
      */
     _getDescriptionForTransition(t, plural, repeats) {
-        const beConjugated = plural ? "were" : "was";
-        const invitation = "their invitation" + (plural || (repeats > 1) ? "s" : "");
-
+        // The empty interpolations 'severalUsers' and 'oneUser'
+        // are there only to show translators to non-English languages
+        // that the verb is conjugated to plural or singular Subject.
         let res = null;
-        const map = {
-            "joined": "joined",
-            "left": "left",
-            "joined_and_left": "joined and left",
-            "left_and_joined": "left and rejoined",
-            "invite_reject": "rejected " + invitation,
-            "invite_withdrawal": "had " + invitation + " withdrawn",
-            "invited": beConjugated + " invited",
-            "banned": beConjugated + " banned",
-            "unbanned": beConjugated + " unbanned",
-            "kicked": beConjugated + " kicked",
-            "changed_name": "changed name",
-            "changed_avatar": "changed avatar",
-        };
+        switch(t) {
+            case "joined":
+                if (repeats > 1) {
+                    res = (plural)
+                        ? _t("%(severalUsers)sjoined %(repeats)s times", { severalUsers: "", repeats: repeats })
+                        : _t("%(oneUser)sjoined %(repeats)s times", { oneUser: "", repeats: repeats });
+                } else {
+                    res = (plural)
+                        ? _t("%(severalUsers)sjoined", { severalUsers: "" })
+                        : _t("%(oneUser)sjoined", { oneUser: "" });
+                }
 
-        if (Object.keys(map).includes(t)) {
-            res = map[t] + (repeats > 1 ? " " + repeats + " times" : "" );
+            break;
+            case "left":
+                if (repeats > 1) {
+                    res = (plural)
+                        ? _t("%(severalUsers)sleft %(repeats)s times", { severalUsers: "", repeats: repeats })
+                        : _t("%(oneUser)sleft %(repeats)s times", { oneUser: "", repeats: repeats });
+                } else {
+                    res = (plural)
+                        ? _t("%(severalUsers)sleft", { severalUsers: "" })
+                        : _t("%(oneUser)sleft", { oneUser: "" });
+                }            break;
+            case "joined_and_left":
+                if (repeats > 1) {
+                    res = (plural)
+                        ? _t("%(severalUsers)sjoined and left %(repeats)s times", { severalUsers: "", repeats: repeats })
+                        : _t("%(oneUser)sjoined and left %(repeats)s times", { oneUser: "", repeats: repeats });
+                } else {
+                    res = (plural)
+                        ? _t("%(severalUsers)sjoined and left", { severalUsers: "" })
+                        : _t("%(oneUser)sjoined and left", { oneUser: "" });
+                }
+            break;
+            case "left_and_joined":
+                if (repeats > 1) {
+                    res = (plural)
+                        ? _t("%(severalUsers)sleft and rejoined %(repeats)s times", { severalUsers: "", repeats: repeats })
+                        : _t("%(oneUser)sleft and rejoined %(repeats)s times", { oneUser: "", repeats: repeats });
+                } else {
+                    res = (plural)
+                        ? _t("%(severalUsers)sleft and rejoined", { severalUsers: "" })
+                        : _t("%(oneUser)sleft and rejoined", { oneUser: "" });
+                }            break;
+            break;
+            case "invite_reject":
+                if (repeats > 1) {
+                    res = (plural)
+                        ? _t("%(severalUsers)srejected their invitations %(repeats)s times", { severalUsers: "", repeats: repeats })
+                        : _t("%(oneUser)srejected their invitation %(repeats)s times", { oneUser: "", repeats: repeats });
+                } else {
+                    res = (plural)
+                        ? _t("%(severalUsers)srejected their invitations", { severalUsers: "" })
+                        : _t("%(oneUser)srejected their invitation", { oneUser: "" });
+                }
+            break;
+            case "invite_withdrawal":
+                if (repeats > 1) {
+                    res = (plural)
+                        ? _t("%(severalUsers)shad their invitations withdrawn %(repeats)s times", { severalUsers: "", repeats: repeats })
+                        : _t("%(oneUser)shad their invitation withdrawn %(repeats)s times", { oneUser: "", repeats: repeats });
+                } else {
+                    res = (plural)
+                        ? _t("%(severalUsers)shad their invitations withdrawn", { severalUsers: "" })
+                        : _t("%(oneUser)shad their invitation withdrawn", { oneUser: "" });
+                }
+            break;
+            case "invited":
+                if (repeats > 1) {
+                    res = (plural)
+                        ? _t("were invited %(repeats)s times", { repeats: repeats })
+                        : _t("was invited %(repeats)s times", { repeats: repeats });
+                } else {
+                    res = (plural)
+                        ? _t("were invited")
+                        : _t("was invited");
+                }
+            break;
+            case "banned":
+                if (repeats > 1) {
+                    res = (plural)
+                        ? _t("were banned %(repeats)s times", { repeats: repeats })
+                        : _t("was banned %(repeats)s times", { repeats: repeats });
+                } else {
+                    res = (plural)
+                        ? _t("were banned")
+                        : _t("was banned");
+                }
+            break;
+            case "unbanned":
+                if (repeats > 1) {
+                    res = (plural)
+                        ? _t("were unbanned %(repeats)s times", { repeats: repeats })
+                        : _t("was unbanned %(repeats)s times", { repeats: repeats });
+                } else {
+                    res = (plural)
+                        ? _t("were unbanned")
+                        : _t("was unbanned");
+                }
+            break;
+            case "kicked":
+                if (repeats > 1) {
+                    res = (plural)
+                        ? _t("were kicked %(repeats)s times", { repeats: repeats })
+                        : _t("was kicked %(repeats)s times", { repeats: repeats });
+                } else {
+                    res = (plural)
+                        ? _t("were kicked")
+                        : _t("was kicked");
+                }
+            break;
+            case "changed_name":
+                if (repeats > 1) {
+                    res = (plural)
+                        ? _t("%(severalUsers)schanged their name %(repeats)s times", { severalUsers: "", repeats: repeats })
+                        : _t("%(oneUser)schanged their name %(repeats)s times", { oneUser: "", repeats: repeats });
+                } else {
+                    res = (plural)
+                        ? _t("%(severalUsers)schanged their name", { severalUsers: "" })
+                        : _t("%(oneUser)schanged their name", { oneUser: "" });
+                }
+            break;
+            case "changed_avatar":
+                if (repeats > 1) {
+                    res = (plural)
+                        ? _t("%(severalUsers)schanged their avatar %(repeats)s times", { severalUsers: "", repeats: repeats })
+                        : _t("%(oneUser)schanged their avatar %(repeats)s times", { oneUser: "", repeats: repeats });
+                } else {
+                    res = (plural)
+                        ? _t("%(severalUsers)schanged their avatar", { severalUsers: "" })
+                        : _t("%(oneUser)schanged their avatar", { oneUser: "" });
+                }
+            break;
         }
 
         return res;
@@ -254,11 +371,12 @@ module.exports = React.createClass({
             return items[0];
         } else if (remaining) {
             items = items.slice(0, itemLimit);
-            const other = " other" + (remaining > 1 ? "s" : "");
-            return items.join(', ') + ' and ' + remaining + other;
+            return (remaining > 1) 
+                ? _t("%(items)s and %(remaining)s others", { items: items.join(', '), remaining: remaining } )
+                : _t("%(items)s and one other", { items: items.join(', ') });
         } else {
             const lastItem = items.pop();
-            return items.join(', ') + ' and ' + lastItem;
+            return _t("%(items)s and %(lastItem)s", { items: items.join(', '), lastItem: lastItem });
         }
     },
 

src/components/views/elements/PowerSelector.js

@@ -19,10 +19,8 @@ limitations under the License.
 import React from 'react';
 import * as Roles from '../../../Roles';
 
+var LEVEL_ROLE_MAP = {};
 var reverseRoles = {};
-Object.keys(Roles.LEVEL_ROLE_MAP).forEach(function(key) {
-    reverseRoles[Roles.LEVEL_ROLE_MAP[key]] = key;
-});
 
 module.exports = React.createClass({
     displayName: 'PowerSelector',
@@ -44,10 +42,17 @@ module.exports = React.createClass({
 
     getInitialState: function() {
         return {
-            custom: (Roles.LEVEL_ROLE_MAP[this.props.value] === undefined),
+            custom: (LEVEL_ROLE_MAP[this.props.value] === undefined),
         };
     },
     
+    componentWillMount: function() {
+    	LEVEL_ROLE_MAP = Roles.levelRoleMap();
+    	Object.keys(LEVEL_ROLE_MAP).forEach(function(key) {
+			reverseRoles[LEVEL_ROLE_MAP[key]] = key;
+		});
+    },
+
     onSelectChange: function(event) {
         this.setState({ custom: event.target.value === "Custom" });
         if (event.target.value !== "Custom") {
@@ -94,7 +99,7 @@ module.exports = React.createClass({
             selectValue = "Custom";
         }
         else {
-            selectValue = Roles.LEVEL_ROLE_MAP[this.props.value] || "Custom";
+            selectValue = LEVEL_ROLE_MAP[this.props.value] || "Custom";
         }
         var select;
         if (this.props.disabled) {
@@ -105,7 +110,7 @@ module.exports = React.createClass({
             const levels = [0, 50, 100];
             let options = levels.map((level) => {
                 return {
-                    value: Roles.LEVEL_ROLE_MAP[level],
+                    value: LEVEL_ROLE_MAP[level],
                     // Give a userDefault (users_default in the power event) of 0 but
                     // because level !== undefined, this should never be used.
                     text: Roles.textualPowerLevel(level, 0),
@@ -113,7 +118,7 @@ module.exports = React.createClass({
             });
             options.push({ value: "Custom", text: "Custom level" });
             options = options.map((op) => {
-                return <option value={op.value}>{op.text}</option>;
+                return <option value={op.value} key={op.value}>{op.text}</option>;
             });
 
             select =

src/components/views/elements/UserSelector.js

@@ -16,7 +16,8 @@ limitations under the License.
 
 'use strict';
 
-var React = require('react');
+import React from 'react';
+import { _t } from '../../../languageHandler';
 
 module.exports = React.createClass({
     displayName: 'UserSelector',
@@ -59,9 +60,9 @@ module.exports = React.createClass({
                         return <li key={user_id}>{user_id} - <span onClick={function() {self.removeUser(user_id);}}>X</span></li>;
                     })}
                 </ul>
-                <input type="text" ref="user_id_input" defaultValue="" className="mx_UserSelector_userIdInput" placeholder="ex. @bob:example.com"/>
+                <input type="text" ref="user_id_input" defaultValue="" className="mx_UserSelector_userIdInput" placeholder={_t("ex. @bob:example.com")}/>
                 <button onClick={this.onAddUserId} className="mx_UserSelector_AddUserId">
-                    Add User
+                    {_t("Add User")}
                 </button>
             </div>
         );

src/components/views/login/CaptchaForm.js

@@ -16,7 +16,9 @@ limitations under the License.
 
 'use strict';
 
-var React = require('react');
+import React from 'react';
+import { _t } from '../../../languageHandler';
+
 var DIV_ID = 'mx_recaptcha';
 
 /**
@@ -117,7 +119,7 @@ module.exports = React.createClass({
 
         return (
             <div ref="recaptchaContainer">
-                This Home Server would like to make sure you are not a robot
+                {_t("This Home Server would like to make sure you are not a robot")}
                 <br/>
                 <div id={DIV_ID}></div>
                 {error}

src/components/views/login/CasLogin.js

@@ -16,7 +16,8 @@ limitations under the License.
 
 'use strict';
 
-var React = require('react');
+import React from 'react';
+import { _t } from '../../../languageHandler';
 
 module.exports = React.createClass({
     displayName: 'CasLogin',
@@ -28,7 +29,7 @@ module.exports = React.createClass({
     render: function() {
         return (
             <div>
-                <button onClick={this.props.onSubmit}>Sign in with CAS</button>
+                <button onClick={this.props.onSubmit}>{_t("Sign in with CAS")}</button>
             </div>
         );
     }

src/components/views/login/CustomServerDialog.js

@@ -14,7 +14,8 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-var React = require("react");
+import React from 'react';
+import { _t } from '../../../languageHandler';
 
 module.exports = React.createClass({
     displayName: 'CustomServerDialog',
@@ -23,24 +24,24 @@ module.exports = React.createClass({
         return (
             <div className="mx_ErrorDialog">
                 <div className="mx_Dialog_title">
-                    Custom Server Options
+                    {_t("Custom Server Options")}
                 </div>
                 <div className="mx_Dialog_content">
                     <span>
-                        You can use the custom server options to sign into other Matrix
-                        servers by specifying a different Home server URL.
+                        {_t("You can use the custom server options to sign into other Matrix " +
+                        "servers by specifying a different Home server URL.")}
                         <br/>
-                        This allows you to use this app with an existing Matrix account on
-                        a different home server.
+                        {_t("This allows you to use this app with an existing Matrix account on " +
+                            "a different home server.")}
                         <br/>
                         <br/>
-                        You can also set a custom identity server but this will typically prevent
-                        interaction with users based on email address.
+                        {_t("You can also set a custom identity server but this will typically prevent " +
+                            "interaction with users based on email address.")}
                     </span>
                 </div>
                 <div className="mx_Dialog_buttons">
                     <button onClick={this.props.onFinished} autoFocus={true}>
-                        Dismiss
+                        {_t("Dismiss")}
                     </button>
                 </div>
             </div>

src/components/views/login/InteractiveAuthEntryComponents.js

@@ -20,6 +20,7 @@ import url from 'url';
 import classnames from 'classnames';
 
 import sdk from '../../../index';
+import { _t } from '../../../languageHandler';
 
 /* This file contains a collection of components which are used by the
  * InteractiveAuth to prompt the user to enter the information needed
@@ -255,8 +256,8 @@ export const EmailIdentityAuthEntry = React.createClass({
         } else {
             return (
                 <div>
-                    <p>An email has been sent to <i>{this.props.inputs.emailAddress}</i></p>
-                    <p>Please check your email to continue registration.</p>
+                    <p>{_t("An email has been sent to")} <i>{this.props.inputs.emailAddress}</i></p>
+                    <p>{_t("Please check your email to continue registration.")}</p>
                 </div>
             );
         }
@@ -348,7 +349,7 @@ export const MsisdnAuthEntry = React.createClass({
                 });
             } else {
                 this.setState({
-                    errorText: "Token incorrect",
+                    errorText: _t("Token incorrect"),
                 });
             }
         }).catch((e) => {
@@ -369,8 +370,8 @@ export const MsisdnAuthEntry = React.createClass({
             });
             return (
                 <div>
-                    <p>A text message has been sent to +<i>{this._msisdn}</i></p>
-                    <p>Please enter the code it contains:</p>
+                    <p>{_t("A text message has been sent to")} +<i>{this._msisdn}</i></p>
+                    <p>{_t("Please enter the code it contains:")}</p>
                     <div className="mx_InteractiveAuthEntryComponents_msisdnWrapper">
                         <form onSubmit={this._onFormSubmit}>
                             <input type="text"

src/components/views/login/LoginFooter.js

@@ -16,7 +16,7 @@ limitations under the License.
 
 'use strict';
 
-var React = require('react');
+import React from 'react';
 
 module.exports = React.createClass({
     displayName: 'LoginFooter',
@@ -24,7 +24,7 @@ module.exports = React.createClass({
     render: function() {
         return (
             <div className="mx_Login_links">
-                <a href="https://matrix.org">powered by Matrix</a>
+                <a href="https://matrix.org">{_t("powered by Matrix")}</a>
             </div>
         );
     }

src/components/views/login/PasswordLogin.js

@@ -19,6 +19,7 @@ import React from 'react';
 import ReactDOM from 'react-dom';
 import classNames from 'classnames';
 import sdk from '../../../index';
+import { _t } from '../../../languageHandler';
 import {field_input_incorrect} from '../../../UiEffects';
 
 
@@ -121,32 +122,16 @@ class PasswordLogin extends React.Component {
                     autoFocus
                 />;
             case PasswordLogin.LOGIN_FIELD_MXID:
-                const mxidInputClasses = classNames({
-                    "mx_Login_field": true,
-                    "mx_Login_username": true,
-                    "mx_Login_field_has_prefix": true,
-                    "mx_Login_field_has_suffix": Boolean(this.props.hsDomain),
-                });
-                let suffix = null;
-                if (this.props.hsDomain) {
-                    suffix = <div className="mx_Login_field_suffix">
-                        :{this.props.hsDomain}
-                    </div>;
-                }
-                return <div className="mx_Login_field_group">
-                    <div className="mx_Login_field_prefix">@</div>
-                    <input
-                        className={mxidInputClasses}
-                        key="username_input"
-                        type="text"
-                        name="username" // make it a little easier for browser's remember-password
-                        onChange={this.onUsernameChanged}
-                        placeholder="username"
-                        value={this.state.username}
-                        autoFocus
-                    />
-                    {suffix}
-                </div>;
+                return <input
+                    className="mx_Login_field mx_Login_username"
+                    key="username_input"
+                    type="text"
+                    name="username" // make it a little easier for browser's remember-password
+                    onChange={this.onUsernameChanged}
+                    placeholder={_t('User name')}
+                    value={this.state.username}
+                    autoFocus
+                />;
             case PasswordLogin.LOGIN_FIELD_PHONE:
                 const CountryDropdown = sdk.getComponent('views.login.CountryDropdown');
                 return <div className="mx_Login_phoneSection">
@@ -179,7 +164,7 @@ class PasswordLogin extends React.Component {
         if (this.props.onForgotPasswordClick) {
             forgotPasswordJsx = (
                 <a className="mx_Login_forgot" onClick={this.props.onForgotPasswordClick} href="#">
-                    Forgot your password?
+                    { _t('Forgot your password?') }
                 </a>
             );
         }
@@ -197,24 +182,24 @@ class PasswordLogin extends React.Component {
             <div>
                 <form onSubmit={this.onSubmitForm}>
                 <div className="mx_Login_type_container">
-                    <label className="mx_Login_type_label">I want to sign in with my</label>
+                    <label className="mx_Login_type_label">{ _t('I want to sign in with') }</label>
                     <Dropdown
                         className="mx_Login_type_dropdown"
                         value={this.state.loginType}
                         onOptionChange={this.onLoginTypeChange}>
-                            <span key={PasswordLogin.LOGIN_FIELD_MXID}>Matrix ID</span>
-                            <span key={PasswordLogin.LOGIN_FIELD_EMAIL}>Email Address</span>
-                            <span key={PasswordLogin.LOGIN_FIELD_PHONE}>Phone</span>
+                            <span key={PasswordLogin.LOGIN_FIELD_MXID}>{ _t('my Matrix ID') }</span>
+                            <span key={PasswordLogin.LOGIN_FIELD_EMAIL}>{ _t('Email address') }</span>
+                            <span key={PasswordLogin.LOGIN_FIELD_PHONE}>{ _t('Phone') }</span>
                     </Dropdown>
                 </div>
                 {loginField}
                 <input className={pwFieldClass} ref={(e) => {this._passwordField = e;}} type="password"
                     name="password"
                     value={this.state.password} onChange={this.onPasswordChanged}
-                    placeholder="Password" />
+                    placeholder={ _t('Password') } />
                 <br />
                 {forgotPasswordJsx}
-                <input className="mx_Login_submit" type="submit" value="Sign in" />
+                <input className="mx_Login_submit" type="submit" value={ _t('Sign in') } />
                 </form>
             </div>
         );
@@ -237,7 +222,6 @@ PasswordLogin.propTypes = {
     onPhoneNumberChanged: React.PropTypes.func,
     onPasswordChanged: React.PropTypes.func,
     loginIncorrect: React.PropTypes.bool,
-    hsDomain: React.PropTypes.string,
 };
 
 module.exports = PasswordLogin;

src/components/views/login/RegistrationForm.js

@@ -21,6 +21,7 @@ import sdk from '../../../index';
 import Email from '../../../email';
 import { looksValid as phoneNumberLooksValid } from '../../../phonenumber';
 import Modal from '../../../Modal';
+import { _t } from '../../../languageHandler';
 
 const FIELD_EMAIL = 'field_email';
 const FIELD_PHONE_COUNTRY = 'field_phone_country';
@@ -100,13 +101,13 @@ module.exports = React.createClass({
             if (this.refs.email.value == '') {
                 var QuestionDialog = sdk.getComponent("dialogs.QuestionDialog");
                 Modal.createDialog(QuestionDialog, {
-                    title: "Warning",
+                    title: "Warning!",
                     description:
                         <div>
-                            If you don't specify an email address, you won't be able to reset your password.<br/>
-                            Are you sure?
+                            {_t("If you don't specify an email address, you won't be able to reset your password. " +
+                                "Are you sure?")}
                         </div>,
-                    button: "Continue",
+                    button: _t("Continue"),
                     onFinished: function(confirmed) {
                         if (confirmed) {
                             self._doSubmit();
@@ -304,7 +305,7 @@ module.exports = React.createClass({
             } else if (this.state.selectedTeam) {
                 belowEmailSection = (
                     <p className="mx_Login_support">
-                        You are registering with {this.state.selectedTeam.name}
+                        {_t("You are registering with %(SelectedTeamName)s", {SelectedTeamName: this.state.selectedTeam.name})}
                     </p>
                 );
             }

src/components/views/login/ServerConfig.js

@@ -19,6 +19,7 @@ limitations under the License.
 var React = require('react');
 var Modal = require('../../../Modal');
 var sdk = require('../../../index');
+import { _t } from '../../../languageHandler';
 
 /**
  * A pure UI component which displays the HS and IS to use.
@@ -136,14 +137,14 @@ module.exports = React.createClass({
                         checked={!this.state.configVisible}
                         onChange={this.onServerConfigVisibleChange.bind(this, false)} />
                     <label className="mx_Login_label" htmlFor="basic">
-                        Default server
+                        {_t("Default server")}
                     </label>
                     &nbsp;&nbsp;
                     <input className="mx_Login_radio" id="advanced" name="configVisible" type="radio"
                         checked={this.state.configVisible}
                         onChange={this.onServerConfigVisibleChange.bind(this, true)} />
                     <label className="mx_Login_label" htmlFor="advanced">
-                        Custom server
+                        {_t("Custom server")}
                     </label>
                 </div>
             );
@@ -155,7 +156,7 @@ module.exports = React.createClass({
             <div style={serverConfigStyle}>
                 <div className="mx_ServerConfig">
                     <label className="mx_Login_label mx_ServerConfig_hslabel" htmlFor="hsurl">
-                        Home server URL
+                        {_t("Home server URL")}
                     </label>
                     <input className="mx_Login_field" id="hsurl" type="text"
                         placeholder={this.props.defaultHsUrl}
@@ -163,7 +164,7 @@ module.exports = React.createClass({
                         value={this.state.hs_url}
                         onChange={this.onHomeserverChanged} />
                     <label className="mx_Login_label mx_ServerConfig_islabel" htmlFor="isurl">
-                        Identity server URL
+                        {_t("Identity server URL")}
                     </label>
                     <input className="mx_Login_field" id="isurl" type="text"
                         placeholder={this.props.defaultIsUrl}
@@ -171,7 +172,7 @@ module.exports = React.createClass({
                         value={this.state.is_url}
                         onChange={this.onIdentityServerChanged} />
                     <a className="mx_ServerConfig_help" href="#" onClick={this.showHelpPopup}>
-                        What does this mean?
+                        {_t("What does this mean?")}
                     </a>
                 </div>
             </div>

src/components/views/messages/MAudioBody.js

@@ -22,6 +22,7 @@ import MFileBody from './MFileBody';
 import MatrixClientPeg from '../../../MatrixClientPeg';
 import sdk from '../../../index';
 import { decryptFile, readBlobAsDataUri } from '../../../utils/DecryptFile';
+import { _t } from '../../../languageHandler';
 
 export default class MAudioBody extends React.Component {
     constructor(props) {
@@ -77,7 +78,7 @@ export default class MAudioBody extends React.Component {
             return (
                 <span className="mx_MAudioBody" ref="body">
                     <img src="img/warning.svg" width="16" height="16"/>
-                    Error decrypting audio
+                    {_t("Error decrypting audio")}
                 </span>
             );
         }

src/components/views/messages/MFileBody.js

@@ -20,6 +20,7 @@ import React from 'react';
 import filesize from 'filesize';
 import MatrixClientPeg from '../../../MatrixClientPeg';
 import sdk from '../../../index';
+import { _t } from '../../../languageHandler';
 import {decryptFile} from '../../../utils/DecryptFile';
 import Tinter from '../../../Tinter';
 import request from 'browser-request';
@@ -202,7 +203,7 @@ module.exports = React.createClass({
      * @return {string} the human readable link text for the attachment.
      */
     presentableTextForFile: function(content) {
-        var linkText = 'Attachment';
+        var linkText = _t("Attachment");
         if (content.body && content.body.length > 0) {
             // The content body should be the name of the file including a
             // file extension.
@@ -261,7 +262,7 @@ module.exports = React.createClass({
         const content = this.props.mxEvent.getContent();
         const text = this.presentableTextForFile(content);
         const isEncrypted = content.file !== undefined;
-        const fileName = content.body && content.body.length > 0 ? content.body : "Attachment";
+        const fileName = content.body && content.body.length > 0 ? content.body : _t("Attachment");
         const contentUrl = this._getContentUrl();
         const ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
 
@@ -283,7 +284,8 @@ module.exports = React.createClass({
                     }).catch((err) => {
                         console.warn("Unable to decrypt attachment: ", err);
                         Modal.createDialog(ErrorDialog, {
-                            description: "Error decrypting attachment"
+                        	title: _t("Error"),
+                            description: _t("Error decrypting attachment"),
                         });
                     }).finally(() => {
                         decrypting = false;
@@ -295,7 +297,7 @@ module.exports = React.createClass({
                     <span className="mx_MFileBody" ref="body">
                         <div className="mx_MImageBody_download">
                             <a href="javascript:void(0)" onClick={decrypt}>
-                                Decrypt {text}
+                                { _t("Decrypt %(text)s", { text: text }) }
                             </a>
                         </div>
                     </span>
@@ -314,7 +316,7 @@ module.exports = React.createClass({
                     // We can't provide a Content-Disposition header like we would for HTTP.
                     download: fileName,
                     target: "_blank",
-                    textContent: "Download " + text,
+                    textContent: _t("Download %(text)s", { text: text }),
                 }, "*");
             };
 
@@ -362,7 +364,7 @@ module.exports = React.createClass({
                         <div className="mx_MImageBody_download">
                             <a href={contentUrl} download={fileName} target="_blank" rel="noopener">
                                 <img src={tintedDownloadImageURL} width="12" height="14" ref="downloadImage"/>
-                                Download {text}
+                                { _t("Download %(text)s", { text: text }) }
                             </a>
                         </div>
                     </span>
@@ -371,7 +373,7 @@ module.exports = React.createClass({
         } else {
             var extra = text ? (': ' + text) : '';
             return <span className="mx_MFileBody">
-                Invalid file{extra}
+                { _t("Invalid file%(extra)s", { extra: extra }) }
             </span>;
         }
     },

src/components/views/messages/MImageBody.js

@@ -26,6 +26,7 @@ import dis from '../../../dispatcher';
 import { decryptFile, readBlobAsDataUri } from '../../../utils/DecryptFile';
 import q from 'q';
 import UserSettingsStore from '../../../UserSettingsStore';
+import { _t } from '../../../languageHandler';
 
 module.exports = React.createClass({
     displayName: 'MImageBody',
@@ -56,7 +57,7 @@ module.exports = React.createClass({
             const ImageView = sdk.getComponent("elements.ImageView");
             const params = {
                 src: httpUrl,
-                name: content.body && content.body.length > 0 ? content.body : 'Attachment',
+                name: content.body && content.body.length > 0 ? content.body : _t('Attachment'),
                 mxEvent: this.props.mxEvent,
             };
 
@@ -191,7 +192,7 @@ module.exports = React.createClass({
             return (
                 <span className="mx_MImageBody" ref="body">
                     <img src="img/warning.svg" width="16" height="16"/>
-                    Error decrypting image
+                    {_t("Error decrypting image")}
                 </span>
             );
         }
@@ -238,13 +239,13 @@ module.exports = React.createClass({
         } else if (content.body) {
             return (
                 <span className="mx_MImageBody">
-                    Image '{content.body}' cannot be displayed.
+                    {_t("Image '%(Body)s' cannot be displayed.", {Body: content.body})}
                 </span>
             );
         } else {
             return (
                 <span className="mx_MImageBody">
-                    This image cannot be displayed.
+                    {_t("This image cannot be displayed.")}
                 </span>
             );
         }

src/components/views/messages/MVideoBody.js

@@ -24,6 +24,7 @@ import sdk from '../../../index';
 import { decryptFile, readBlobAsDataUri } from '../../../utils/DecryptFile';
 import q from 'q';
 import UserSettingsStore from '../../../UserSettingsStore';
+import { _t } from '../../../languageHandler';
 
 module.exports = React.createClass({
     displayName: 'MVideoBody',
@@ -128,7 +129,7 @@ module.exports = React.createClass({
             return (
                 <span className="mx_MVideoBody" ref="body">
                     <img src="img/warning.svg" width="16" height="16"/>
-                    Error decrypting video
+                    {_t("Error decrypting video")}
                 </span>
             );
         }

src/components/views/messages/RoomAvatarEvent.js

@@ -0,0 +1,92 @@
+/*
+Copyright 2017 Vector Creations Ltd
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React from 'react';
+import MatrixClientPeg from '../../../MatrixClientPeg';
+import { ContentRepo } from 'matrix-js-sdk';
+import { _t, _tJsx } from '../../../languageHandler';
+import sdk from '../../../index';
+import Modal from '../../../Modal';
+import AccessibleButton from '../elements/AccessibleButton';
+
+module.exports = React.createClass({
+    displayName: 'RoomAvatarEvent',
+
+    propTypes: {
+        /* the MatrixEvent to show */
+        mxEvent: React.PropTypes.object.isRequired,
+    },
+
+    onAvatarClick: function(name) {
+        var httpUrl = MatrixClientPeg.get().mxcUrlToHttp(this.props.mxEvent.getContent().url);
+        var ImageView = sdk.getComponent("elements.ImageView");
+        var params = {
+            src: httpUrl,
+            name: name,
+        };
+        Modal.createDialog(ImageView, params, "mx_Dialog_lightbox");
+    },
+
+    render: function() {
+        var ev = this.props.mxEvent;
+        var senderDisplayName = ev.sender && ev.sender.name ? ev.sender.name : ev.getSender();
+        var BaseAvatar = sdk.getComponent("avatars.BaseAvatar");
+
+        var room = MatrixClientPeg.get().getRoom(this.props.mxEvent.getRoomId());
+        var name = _t('%(senderDisplayName)s changed the avatar for %(roomName)s', {
+                senderDisplayName: senderDisplayName,
+                roomName: room ? room.name : '',
+        });
+
+        if (!ev.getContent().url || ev.getContent().url.trim().length === 0) {
+            return (
+                <div className="mx_TextualEvent">
+                    { _t('%(senderDisplayName)s removed the room avatar.', {senderDisplayName: senderDisplayName}) }
+                </div>
+            );
+        }
+
+        var url = ContentRepo.getHttpUriForMxc(
+                    MatrixClientPeg.get().getHomeserverUrl(),
+                    ev.getContent().url,
+                    14 * window.devicePixelRatio,
+                    14 * window.devicePixelRatio,
+                    'crop'
+                );
+
+        // it sucks that _tJsx doesn't support normal _t substitutions :((
+        return (
+            <div className="mx_RoomAvatarEvent">
+                { _tJsx('$senderDisplayName changed the room avatar to <img/>',
+                         [
+                            /\$senderDisplayName/,
+                            /<img\/>/,
+                         ],
+                         [
+                            (sub) => senderDisplayName,
+                            (sub) =>
+                                <AccessibleButton key="avatar" className="mx_RoomAvatarEvent_avatar"
+                                                  onClick={ this.onAvatarClick.bind(this, name) }>
+                                    <BaseAvatar width={14} height={14} url={ url }
+                                                name={ name } />
+                                </AccessibleButton>,
+                         ]
+                    )
+                }
+            </div>
+        );
+    },
+});

src/components/views/messages/TextualBody.js

@@ -28,6 +28,7 @@ import ScalarAuthClient from '../../../ScalarAuthClient';
 import Modal from '../../../Modal';
 import SdkConfig from '../../../SdkConfig';
 import dis from '../../../dispatcher';
+import { _t } from '../../../languageHandler';
 
 linkifyMatrix(linkify);
 
@@ -230,14 +231,14 @@ module.exports = React.createClass({
             let QuestionDialog = sdk.getComponent("dialogs.QuestionDialog");
             let integrationsUrl = SdkConfig.get().integrations_ui_url;
             Modal.createDialog(QuestionDialog, {
-                title: "Add an Integration",
+                title: _t("Add an Integration"),
                 description:
                     <div>
-                        You are about to be taken to a third-party site so you can
-                        authenticate your account for use with {integrationsUrl}.<br/>
-                        Do you wish to continue?
+                        {_t("You are about to be taken to a third-party site so you can " +
+                            "authenticate your account for use with %(integrationsUrl)s. " +
+                            "Do you wish to continue?", { integrationsUrl: integrationsUrl })}
                     </div>,
-                button: "Continue",
+                button: _t("Continue"),
                 onFinished: function(confirmed) {
                     if (!confirmed) {
                         return;

src/components/views/messages/TextualEvent.js

@@ -24,6 +24,11 @@ import sdk from '../../../index';
 module.exports = React.createClass({
     displayName: 'TextualEvent',
 
+    propTypes: {
+        /* the MatrixEvent to show */
+        mxEvent: React.PropTypes.object.isRequired,
+    },
+    
     render: function() {
         const EmojiText = sdk.getComponent('elements.EmojiText');
         var text = TextForEvent.textForEvent(this.props.mxEvent);

src/components/views/messages/UnknownBody.js

@@ -16,7 +16,8 @@ limitations under the License.
 
 'use strict';
 
-var React = require('react');
+import React from 'react';
+import { _t } from '../../../languageHandler';
 
 module.exports = React.createClass({
     displayName: 'UnknownBody',
@@ -24,7 +25,7 @@ module.exports = React.createClass({
     render: function() {
         const text = this.props.mxEvent.getContent().body;
         return (
-            <span className="mx_UnknownBody" title="Redacted or unknown message type">
+            <span className="mx_UnknownBody" title={_t("Removed or unknown message type")}>
                 {text}
             </span>
         );

src/components/views/room_settings/AliasSettings.js

@@ -19,6 +19,7 @@ var React = require('react');
 var ObjectUtils = require("../../../ObjectUtils");
 var MatrixClientPeg = require('../../../MatrixClientPeg');
 var sdk = require("../../../index");
+import { _t } from '../../../languageHandler';
 var Modal = require("../../../Modal");
 
 module.exports = React.createClass({
@@ -154,8 +155,8 @@ module.exports = React.createClass({
         else {
             var ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
             Modal.createDialog(ErrorDialog, {
-                title: "Invalid alias format",
-                description: "'" + alias + "' is not a valid format for an alias",
+                title: _t('Invalid alias format'),
+                description: _t('\'%(alias)s\' is not a valid format for an alias', { alias: alias }),
             });
         }
     },
@@ -170,8 +171,8 @@ module.exports = React.createClass({
         else {
             var ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
             Modal.createDialog(ErrorDialog, {
-                title: "Invalid address format",
-                description: "'" + alias + "' is not a valid format for an address",
+                title: _t('Invalid address format'),
+                description: _t('\'%(alias)s\' is not a valid format for an address', { alias: alias }),
             });
         }
     },
@@ -203,7 +204,7 @@ module.exports = React.createClass({
         if (this.props.canSetCanonicalAlias) {
             canonical_alias_section = (
                 <select onChange={this.onCanonicalAliasChange} defaultValue={ this.state.canonicalAlias }>
-                    <option value="" key="unset">not specified</option>
+                    <option value="" key="unset">{ _t('not specified') }</option>
                     {
                         Object.keys(self.state.domainToAliases).map(function(domain, i) {
                             return self.state.domainToAliases[domain].map(function(alias, j) {
@@ -220,7 +221,7 @@ module.exports = React.createClass({
         }
         else {
             canonical_alias_section = (
-                <b>{ this.state.canonicalAlias || "not set" }</b>
+                <b>{ this.state.canonicalAlias || _t('not set') }</b>
             );
         }
 
@@ -254,13 +255,13 @@ module.exports = React.createClass({
             <div>
                 <h3>Addresses</h3>
                 <div className="mx_RoomSettings_aliasLabel">
-                    The main address for this room is: { canonical_alias_section }
+                    { _t('The main address for this room is') }: { canonical_alias_section }
                 </div>
                 <div className="mx_RoomSettings_aliasLabel">
                     { (this.state.domainToAliases[localDomain] &&
                         this.state.domainToAliases[localDomain].length > 0)
-                      ? "Local addresses for this room:"
-                      : "This room has no local addresses" }
+                      ? _t('Local addresses for this room:')
+                      : _t('This room has no local addresses') }
                 </div>
                 <div className="mx_RoomSettings_aliasesTable">
                     { (this.state.domainToAliases[localDomain] || []).map((alias, i) => {
@@ -268,7 +269,7 @@ module.exports = React.createClass({
                         if (this.props.canSetAliases) {
                             deleteButton = (
                                 <img src="img/cancel-small.svg" width="14" height="14"
-                                    alt="Delete" onClick={ self.onAliasDeleted.bind(self, localDomain, i) } />
+                                    alt={ _t('Delete') } onClick={ self.onAliasDeleted.bind(self, localDomain, i) } />
                             );
                         }
                         return (
@@ -276,7 +277,7 @@ module.exports = React.createClass({
                                 <EditableText
                                     className="mx_RoomSettings_alias mx_RoomSettings_editable"
                                     placeholderClassName="mx_RoomSettings_aliasPlaceholder"
-                                    placeholder={ "New address (e.g. #foo:" + localDomain + ")" }
+                                    placeholder={ _t('New address (e.g. #foo:%(localDomain)s)', { localDomain: localDomain}) }
                                     blurToCancel={ false }
                                     onValueChanged={ self.onAliasChanged.bind(self, localDomain, i) }
                                     editable={ self.props.canSetAliases }
@@ -294,7 +295,7 @@ module.exports = React.createClass({
                                 ref="add_alias"
                                 className="mx_RoomSettings_alias mx_RoomSettings_editable"
                                 placeholderClassName="mx_RoomSettings_aliasPlaceholder"
-                                placeholder={ "New address (e.g. #foo:" + localDomain + ")" }
+                                placeholder={ _t('New address (e.g. #foo:%(localDomain)s)', { localDomain: localDomain}) }
                                 blurToCancel={ false }
                                 onValueChanged={ self.onAliasAdded } />
                             <div className="mx_RoomSettings_addAlias mx_filterFlipColor">

src/components/views/room_settings/UrlPreviewSettings.js

@@ -20,6 +20,7 @@ var MatrixClientPeg = require('../../../MatrixClientPeg');
 var sdk = require("../../../index");
 var Modal = require("../../../Modal");
 var UserSettingsStore = require('../../../UserSettingsStore');
+import { _t } from '../../../languageHandler';
 
 
 module.exports = React.createClass({
@@ -120,19 +121,19 @@ module.exports = React.createClass({
                     <input type="checkbox" ref="globalDisableUrlPreview"
                            onChange={ this.onGlobalDisableUrlPreviewChange }
                            checked={ this.state.globalDisableUrlPreview } />
-                    Disable URL previews by default for participants in this room
+                    {_t("Disable URL previews by default for participants in this room")}
                 </label>;
         }
         else {
             disableRoomPreviewUrls =
                 <label>
-                    URL previews are { this.state.globalDisableUrlPreview ? "disabled" : "enabled" } by default for participants in this room.
+                    {_t("URL previews are %(globalDisableUrlPreview)s by default for participants in this room.", {globalDisableUrlPreview: this.state.globalDisableUrlPreview ? _t("disabled") : _t("enabled")})}
                 </label>;
         }
 
         return (
             <div className="mx_RoomSettings_toggles">
-                <h3>URL Previews</h3>
+                <h3>{_t("URL Previews")}</h3>
 
                 <label>
                     You have <a href="#/settings">{ UserSettingsStore.getUrlPreviewsDisabled() ? 'disabled' : 'enabled' }</a> URL previews by default.
@@ -142,13 +143,13 @@ module.exports = React.createClass({
                     <input type="checkbox" ref="userEnableUrlPreview"
                            onChange={ this.onUserEnableUrlPreviewChange }
                            checked={ this.state.userEnableUrlPreview } />
-                    Enable URL previews for this room (affects only you)
+                    {_t("Enable URL previews for this room (affects only you)")}
                 </label>
                 <label>
                     <input type="checkbox" ref="userDisableUrlPreview"
                            onChange={ this.onUserDisableUrlPreviewChange }
                            checked={ this.state.userDisableUrlPreview } />
-                    Disable URL previews for this room (affects only you)
+                    {_t("Disable URL previews for this room (affects only you)")}
                 </label>
             </div>
         );

src/components/views/rooms/AuxPanel.js

@@ -14,11 +14,13 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-var React = require('react');
-var MatrixClientPeg = require("../../../MatrixClientPeg");
-var sdk = require('../../../index');
-var dis = require("../../../dispatcher");
-var ObjectUtils = require('../../../ObjectUtils');
+import React from 'react';
+import MatrixClientPeg from "../../../MatrixClientPeg";
+import sdk from '../../../index';
+import dis from "../../../dispatcher";
+import ObjectUtils from '../../../ObjectUtils';
+import  { _t } from '../../../languageHandler';
+
 
 module.exports = React.createClass({
     displayName: 'AuxPanel',
@@ -79,7 +81,7 @@ module.exports = React.createClass({
                       title="Drop File Here">
                         <TintableSvg src="img/upload-big.svg" width="45" height="59"/>
                         <br/>
-                        Drop file here to upload
+                        {_t("Drop file here to upload")}
                     </div>
                 </div>
             );
@@ -89,7 +91,7 @@ module.exports = React.createClass({
         if (this.props.displayConfCallNotification) {
             var supportedText, joinText;
             if (!MatrixClientPeg.get().supportsVoip()) {
-                supportedText = " (unsupported)";
+                supportedText = _t(" (unsupported)");
             }
             else {
                 joinText = (<span>
@@ -101,7 +103,7 @@ module.exports = React.createClass({
             }
             conferenceCallNotification = (
                 <div className="mx_RoomView_ongoingConfCallNotification">
-                    Ongoing conference call{ supportedText }. { joinText }
+                    {_t("Ongoing conference call%(supportedText)s. %(joinText)s", {supportedText: supportedText, joinText: joinText})}
                 </div>
             );
         }

src/components/views/rooms/EventTile.js

@@ -16,8 +16,10 @@ limitations under the License.
 
 'use strict';
 
+
 var React = require('react');
 var classNames = require("classnames");
+import { _t } from '../../../languageHandler';
 var Modal = require('../../../Modal');
 
 var sdk = require('../../../index');
@@ -36,6 +38,7 @@ var eventTileTypes = {
     'm.call.answer' : 'messages.TextualEvent',
     'm.call.hangup' : 'messages.TextualEvent',
     'm.room.name'   : 'messages.TextualEvent',
+    'm.room.avatar' : 'messages.RoomAvatarEvent',
     'm.room.topic'  : 'messages.TextualEvent',
     'm.room.third_party_invite' : 'messages.TextualEvent',
     'm.room.history_visibility' : 'messages.TextualEvent',
@@ -129,6 +132,9 @@ module.exports = WithMatrixClient(React.createClass({
          * for now.
          */
         tileShape: React.PropTypes.string,
+
+        // show twelve hour timestamps
+        isTwelveHour: React.PropTypes.bool,
     },
 
     getInitialState: function() {
@@ -404,9 +410,10 @@ module.exports = WithMatrixClient(React.createClass({
         var isSending = (['sending', 'queued', 'encrypting'].indexOf(this.props.eventSendStatus) !== -1);
         const isRedacted = (eventType === 'm.room.message') && this.props.isRedacted;
 
-        var classes = classNames({
+        const classes = classNames({
             mx_EventTile: true,
             mx_EventTile_info: isInfoMessage,
+            mx_EventTile_12hr: this.props.isTwelveHour,
             mx_EventTile_encrypting: this.props.eventSendStatus == 'encrypting',
             mx_EventTile_sending: isSending,
             mx_EventTile_notSent: this.props.eventSendStatus == 'not_sent',
@@ -464,9 +471,9 @@ module.exports = WithMatrixClient(React.createClass({
         if (needsSenderProfile) {
             let aux = null;
             if (!this.props.tileShape) {
-                if (msgtype === 'm.image') aux = "sent an image";
-                else if (msgtype === 'm.video') aux = "sent a video";
-                else if (msgtype === 'm.file') aux = "uploaded a file";
+                if (msgtype === 'm.image') aux = _t('sent an image');
+                else if (msgtype === 'm.video') aux = _t('sent a video');
+                else if (msgtype === 'm.file') aux = _t('uploaded a file');
                 sender = <SenderProfile onClick={ this.onSenderProfileClick } mxEvent={this.props.mxEvent} aux={aux} />;
             }
             else {
@@ -474,11 +481,10 @@ module.exports = WithMatrixClient(React.createClass({
             }
         }
 
-        var editButton = (
-            <span className="mx_EventTile_editButton" title="Options" onClick={this.onEditClicked} />
+        const editButton = (
+            <span className="mx_EventTile_editButton" title={ _t("Options") } onClick={this.onEditClicked} />
         );
-
-        var e2e;
+        let e2e;
         // cosmetic padlocks:
         if ((e2eEnabled && this.props.eventSendStatus) || this.props.mxEvent.getType() === 'm.room.encryption') {
             e2e = <img style={{ cursor: 'initial', marginLeft: '-1px' }} className="mx_EventTile_e2eIcon" alt="Encrypted by verified device" src="img/e2e-verified.svg" width="10" height="12" />;
@@ -489,7 +495,7 @@ module.exports = WithMatrixClient(React.createClass({
                 e2e = <img onClick={ this.onCryptoClicked } className="mx_EventTile_e2eIcon" alt="Undecryptable" src="img/e2e-blocked.svg" width="12" height="12" style={{ marginLeft: "-1px" }} />;
             }
             else if (this.state.verified == true || (e2eEnabled && this.props.eventSendStatus)) {
-                e2e = <img onClick={ this.onCryptoClicked } className="mx_EventTile_e2eIcon"  alt="Encrypted by verified device" src="img/e2e-verified.svg" width="10" height="12"/>;
+                e2e = <img onClick={ this.onCryptoClicked } className="mx_EventTile_e2eIcon" alt="Encrypted by verified device" src="img/e2e-verified.svg" width="10" height="12"/>;
             }
             else {
                 e2e = <img onClick={ this.onCryptoClicked } className="mx_EventTile_e2eIcon" alt="Encrypted by unverified device" src="img/e2e-warning.svg" width="15" height="12" style={{ marginLeft: "-2px" }}/>;
@@ -499,11 +505,10 @@ module.exports = WithMatrixClient(React.createClass({
             e2e = <img onClick={ this.onCryptoClicked } className="mx_EventTile_e2eIcon" alt="Unencrypted message" src="img/e2e-unencrypted.svg" width="12" height="12"/>;
         }
         const timestamp = this.props.mxEvent.getTs() ?
-            <MessageTimestamp ts={this.props.mxEvent.getTs()} /> : null;
+            <MessageTimestamp showTwelveHour={this.props.isTwelveHour} ts={this.props.mxEvent.getTs()} /> : null;
 
         if (this.props.tileShape === "notif") {
-            var room = this.props.matrixClient.getRoom(this.props.mxEvent.getRoomId());
-
+            const room = this.props.matrixClient.getRoom(this.props.mxEvent.getRoomId());
             return (
                 <div className={classes}>
                     <div className="mx_EventTile_roomName">

src/components/views/rooms/ForwardMessage.js

@@ -0,0 +1,96 @@
+/*
+ Copyright 2017 Vector Creations Ltd
+ Copyright 2017 Michael Telatynski
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+import React from 'react';
+import { _t } from '../../../languageHandler';
+import MatrixClientPeg from '../../../MatrixClientPeg';
+import dis from '../../../dispatcher';
+import KeyCode from '../../../KeyCode';
+
+
+module.exports = React.createClass({
+    displayName: 'ForwardMessage',
+
+    propTypes: {
+        currentRoomId: React.PropTypes.string.isRequired,
+
+        /* the MatrixEvent to be forwarded */
+        mxEvent: React.PropTypes.object.isRequired,
+
+        onCancelClick: React.PropTypes.func.isRequired,
+    },
+
+    componentWillMount: function() {
+        dis.dispatch({
+            action: 'ui_opacity',
+            leftOpacity: 1.0,
+            rightOpacity: 0.3,
+            middleOpacity: 0.5,
+        });
+    },
+
+    componentDidMount: function() {
+        this.dispatcherRef = dis.register(this.onAction);
+        document.addEventListener('keydown', this._onKeyDown);
+    },
+
+    componentWillUnmount: function() {
+        dis.dispatch({
+            action: 'ui_opacity',
+            sideOpacity: 1.0,
+            middleOpacity: 1.0,
+        });
+        dis.unregister(this.dispatcherRef);
+        document.removeEventListener('keydown', this._onKeyDown);
+    },
+
+    onAction: function(payload) {
+        if (payload.action === 'view_room') {
+            const event = this.props.mxEvent;
+            const Client = MatrixClientPeg.get();
+            Client.sendEvent(payload.room_id, event.getType(), event.getContent()).done(() => {
+                dis.dispatch({action: 'message_sent'});
+            }, (err) => {
+                if (err.name === "UnknownDeviceError") {
+                    dis.dispatch({
+                        action: 'unknown_device_error',
+                        err: err,
+                        room: Client.getRoom(payload.room_id),
+                    });
+                }
+                dis.dispatch({action: 'message_send_failed'});
+            });
+            if (this.props.currentRoomId === payload.room_id) this.props.onCancelClick();
+        }
+    },
+
+    _onKeyDown: function(ev) {
+        switch (ev.keyCode) {
+            case KeyCode.ESCAPE:
+                this.props.onCancelClick();
+                break;
+        }
+    },
+
+    render: function() {
+        return (
+            <div className="mx_ForwardMessage">
+                <h1>{_t('Please select the destination room for this message')}</h1>
+            </div>
+        );
+    },
+});

src/components/views/rooms/MemberInfo.js

@@ -31,6 +31,7 @@ import classNames from 'classnames';
 import dis from '../../../dispatcher';
 import Modal from '../../../Modal';
 import sdk from '../../../index';
+import { _t } from '../../../languageHandler';
 import createRoom from '../../../createRoom';
 import DMRoomMap from '../../../utils/DMRoomMap';
 import Unread from '../../../Unread';
@@ -219,7 +220,7 @@ module.exports = WithMatrixClient(React.createClass({
 
     onKick: function() {
         const membership = this.props.member.membership;
-        const kickLabel = membership === "invite" ? "Disinvite" : "Kick";
+        const kickLabel = membership === "invite" ? _t("Disinvite") : _t("Kick");
         const ConfirmUserActionDialog = sdk.getComponent("dialogs.ConfirmUserActionDialog");
         Modal.createDialog(ConfirmUserActionDialog, {
             member: this.props.member,
@@ -241,7 +242,7 @@ module.exports = WithMatrixClient(React.createClass({
                         const ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
                         console.error("Kick error: " + err);
                         Modal.createDialog(ErrorDialog, {
-                            title: "Failed to kick",
+                            title: _t("Failed to kick"),
                             description: ((err && err.message) ? err.message : "Operation failed"),
                         });
                     }
@@ -256,7 +257,7 @@ module.exports = WithMatrixClient(React.createClass({
         const ConfirmUserActionDialog = sdk.getComponent("dialogs.ConfirmUserActionDialog");
         Modal.createDialog(ConfirmUserActionDialog, {
             member: this.props.member,
-            action: this.props.member.membership == 'ban' ? 'Unban' : 'Ban',
+            action: this.props.member.membership == 'ban' ? _t("Unban") : _t("Ban"),
             askReason: this.props.member.membership != 'ban',
             danger: this.props.member.membership != 'ban',
             onFinished: (proceed, reason) => {
@@ -283,8 +284,8 @@ module.exports = WithMatrixClient(React.createClass({
                         const ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
                         console.error("Ban error: " + err);
                         Modal.createDialog(ErrorDialog, {
-                            title: "Error",
-                            description: "Failed to ban user",
+                            title: _t("Error"),
+                            description: _t("Failed to ban user"),
                         });
                     }
                 ).finally(()=>{
@@ -333,8 +334,8 @@ module.exports = WithMatrixClient(React.createClass({
                 }, function(err) {
                     console.error("Mute error: " + err);
                     Modal.createDialog(ErrorDialog, {
-                        title: "Error",
-                        description: "Failed to mute user",
+                        title: _t("Error"),
+                        description: _t("Failed to mute user"),
                     });
                 }
             ).finally(()=>{
@@ -376,14 +377,14 @@ module.exports = WithMatrixClient(React.createClass({
                 if (err.errcode == 'M_GUEST_ACCESS_FORBIDDEN') {
                     var NeedToRegisterDialog = sdk.getComponent("dialogs.NeedToRegisterDialog");
                     Modal.createDialog(NeedToRegisterDialog, {
-                        title: "Please Register",
-                        description: "This action cannot be performed by a guest user. Please register to be able to do this."
+                        title: _t("Please Register"),
+                        description: _t("This action cannot be performed by a guest user. Please register to be able to do this") + ".",
                     });
                 } else {
                     console.error("Toggle moderator error:" + err);
                     Modal.createDialog(ErrorDialog, {
-                        title: "Error",
-                        description: "Failed to toggle moderator status",
+                        title: _t("Error"),
+                        description: _t("Failed to toggle moderator status"),
                     });
                 }
             }
@@ -403,8 +404,8 @@ module.exports = WithMatrixClient(React.createClass({
                 const ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
                 console.error("Failed to change power level " + err);
                 Modal.createDialog(ErrorDialog, {
-                    title: "Error",
-                    description: "Failed to change power level",
+                    title: _t("Error"),
+                    description: _t("Failed to change power level"),
                 });
             }
         ).finally(()=>{
@@ -432,13 +433,13 @@ module.exports = WithMatrixClient(React.createClass({
             if (parseInt(myPower) === parseInt(powerLevel)) {
                 var QuestionDialog = sdk.getComponent("dialogs.QuestionDialog");
                 Modal.createDialog(QuestionDialog, {
-                    title: "Warning",
+                    title: _t("Warning!"),
                     description:
                         <div>
-                            You will not be able to undo this change as you are promoting the user to have the same power level as yourself.<br/>
-                            Are you sure?
+                            { _t("You will not be able to undo this change as you are promoting the user to have the same power level as yourself") }.<br/>
+                            { _t("Are you sure?") }
                         </div>,
-                    button: "Continue",
+                    button: _t("Continue"),
                     onFinished: function(confirmed) {
                         if (confirmed) {
                             self._applyPowerChange(roomId, target, powerLevel, powerLevelEvent);
@@ -581,9 +582,9 @@ module.exports = WithMatrixClient(React.createClass({
             // still loading
             devComponents = <Spinner />;
         } else if (devices === null) {
-            devComponents = "Unable to load device list";
+            devComponents = _t("Unable to load device list");
         } else if (devices.length === 0) {
-            devComponents = "No devices with registered encryption keys";
+            devComponents = _t("No devices with registered encryption keys");
         } else {
             devComponents = [];
             for (var i = 0; i < devices.length; i++) {
@@ -595,7 +596,7 @@ module.exports = WithMatrixClient(React.createClass({
 
         return (
             <div>
-                <h3>Devices</h3>
+                <h3>{ _t("Devices") }</h3>
                 <div className="mx_MemberInfo_devices">
                     {devComponents}
                 </div>
@@ -644,11 +645,11 @@ module.exports = WithMatrixClient(React.createClass({
                 <div className="mx_RoomTile_avatar">
                     <img src="img/create-big.svg" width="26" height="26" />
                 </div>
-                <div className={labelClasses}><i>Start new chat</i></div>
+                <div className={labelClasses}><i>{ _t("Start a chat") }</i></div>
             </AccessibleButton>;
 
             startChat = <div>
-                <h3>Direct chats</h3>
+                <h3>{ _t("Direct chats") }</h3>
                 {tiles}
                 {startNewChat}
             </div>;
@@ -661,7 +662,7 @@ module.exports = WithMatrixClient(React.createClass({
 
         if (this.state.can.kick) {
             const membership = this.props.member.membership;
-            const kickLabel = membership === "invite" ? "Disinvite" : "Kick";
+            const kickLabel = membership === "invite" ? _t("Disinvite") : _t("Kick");
             kickButton = (
                 <AccessibleButton className="mx_MemberInfo_field"
                         onClick={this.onKick}>
@@ -670,9 +671,9 @@ module.exports = WithMatrixClient(React.createClass({
             );
         }
         if (this.state.can.ban) {
-            let label = 'Ban';
+            let label = _t("Ban");
             if (this.props.member.membership == 'ban') {
-                label = 'Unban';
+                label = _t("Unban");
             }
             banButton = (
                 <AccessibleButton className="mx_MemberInfo_field"
@@ -682,7 +683,7 @@ module.exports = WithMatrixClient(React.createClass({
             );
         }
         if (this.state.can.mute) {
-            const muteLabel = this.state.muted ? "Unmute" : "Mute";
+            const muteLabel = this.state.muted ? _t("Unmute") : _t("Mute");
             muteButton = (
                 <AccessibleButton className="mx_MemberInfo_field"
                         onClick={this.onMuteToggle}>
@@ -691,7 +692,7 @@ module.exports = WithMatrixClient(React.createClass({
             );
         }
         if (this.state.can.toggleMod) {
-            var giveOpLabel = this.state.isTargetMod ? "Revoke Moderator" : "Make Moderator";
+            var giveOpLabel = this.state.isTargetMod ? _t("Revoke Moderator") : _t("Make Moderator");
             giveModButton = <AccessibleButton className="mx_MemberInfo_field" onClick={this.onModToggle}>
                 {giveOpLabel}
             </AccessibleButton>;
@@ -742,7 +743,7 @@ module.exports = WithMatrixClient(React.createClass({
                         { this.props.member.userId }
                     </div>
                     <div className="mx_MemberInfo_profileField">
-                        Level: <b><PowerSelector controlled={true} value={ parseInt(this.props.member.powerLevel) } disabled={ !this.state.can.modifyLevel } onChange={ this.onPowerChange }/></b>
+                        { _t("Level") }: <b><PowerSelector controlled={true} value={ parseInt(this.props.member.powerLevel) } disabled={ !this.state.can.modifyLevel } onChange={ this.onPowerChange }/></b>
                     </div>
                     <div className="mx_MemberInfo_profileField">
                         <PresenceLabel activeAgo={ presenceLastActiveAgo }

src/components/views/rooms/MemberList.js

@@ -14,6 +14,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 var React = require('react');
+import { _t } from '../../../languageHandler';
 var classNames = require('classnames');
 var Matrix = require("matrix-js-sdk");
 var q = require('q');
@@ -27,12 +28,6 @@ var CallHandler = require("../../../CallHandler");
 var Invite = require("../../../Invite");
 
 var INITIAL_LOAD_NUM_MEMBERS = 30;
-var SHARE_HISTORY_WARNING =
-    <span>
-        Newly invited users will see the history of this room. <br/>
-        If you'd prefer invited users not to see messages that were sent before they joined, <br/>
-        turn off, 'Share message history with new users' in the settings for this room.
-    </span>;
 
 module.exports = React.createClass({
     displayName: 'MemberList',
@@ -207,7 +202,9 @@ module.exports = React.createClass({
         // For now we'll pretend this is any entity. It should probably be a separate tile.
         var EntityTile = sdk.getComponent("rooms.EntityTile");
         var BaseAvatar = sdk.getComponent("avatars.BaseAvatar");
-        var text = "and " + overflowCount + " other" + (overflowCount > 1 ? "s" : "") + "...";
+        var text = (overflowCount > 1)
+        	? _t("and %(overflowCount)s others...", { overflowCount: overflowCount })
+        	: _t("and one other...");
         return (
             <EntityTile className="mx_EntityTile_ellipsis" avatarJsx={
                 <BaseAvatar url="img/ellipsis.svg" name="..." width={36} height={36} />
@@ -352,7 +349,7 @@ module.exports = React.createClass({
         if (invitedMemberTiles.length > 0) {
             invitedSection = (
                 <div className="mx_MemberList_invited">
-                    <h2>Invited</h2>
+                    <h2>{ _t("Invited") }</h2>
                     <div className="mx_MemberList_wrapper">
                         {invitedMemberTiles}
                     </div>
@@ -363,8 +360,8 @@ module.exports = React.createClass({
         var inputBox = (
             <form autoComplete="off">
                 <input className="mx_MemberList_query" id="mx_MemberList_query" type="text"
-                    onChange={this.onSearchQueryChanged} value={this.state.searchQuery}
-                    placeholder="Filter room members" />
+                        onChange={this.onSearchQueryChanged} value={this.state.searchQuery}
+                        placeholder={ _t('Filter room members') } />
             </form>
         );
 

src/components/views/rooms/MessageComposer.js

@@ -14,7 +14,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 var React = require('react');
-
+import { _t } from '../../../languageHandler';
 var CallHandler = require('../../../CallHandler');
 var MatrixClientPeg = require('../../../MatrixClientPeg');
 var Modal = require('../../../Modal');
@@ -93,8 +93,8 @@ export default class MessageComposer extends React.Component {
         if (MatrixClientPeg.get().isGuest()) {
             let NeedToRegisterDialog = sdk.getComponent("dialogs.NeedToRegisterDialog");
             Modal.createDialog(NeedToRegisterDialog, {
-                title: "Please Register",
-                description: "Guest users can't upload files. Please register to upload.",
+                title: _t('Please Register'),
+                description: _t('Guest users can\'t upload files. Please register to upload') + '.',
             });
             return;
         }
@@ -118,10 +118,10 @@ export default class MessageComposer extends React.Component {
         }
 
         Modal.createDialog(QuestionDialog, {
-            title: "Upload Files",
+            title: _t('Upload Files'),
             description: (
                 <div>
-                    <p>Are you sure you want upload the following files?</p>
+                    <p>{ _t('Are you sure you want to upload the following files?') }</p>
                     <ul style={{listStyle: 'none', textAlign: 'left'}}>
                         {fileList}
                     </ul>
@@ -240,11 +240,11 @@ export default class MessageComposer extends React.Component {
         if (roomIsEncrypted) {
             // FIXME: show a /!\ if there are untrusted devices in the room...
             e2eImg = 'img/e2e-verified.svg';
-            e2eTitle = 'Encrypted room';
+            e2eTitle = _t('Encrypted room');
             e2eClass = 'mx_MessageComposer_e2eIcon';
         } else {
             e2eImg = 'img/e2e-unencrypted.svg';
-            e2eTitle = 'Unencrypted room';
+            e2eTitle = _t('Unencrypted room');
             e2eClass = 'mx_MessageComposer_e2eIcon mx_filterFlipColor';
         }
 
@@ -257,16 +257,16 @@ export default class MessageComposer extends React.Component {
         if (this.props.callState && this.props.callState !== 'ended') {
             hangupButton =
                 <div key="controls_hangup" className="mx_MessageComposer_hangup" onClick={this.onHangupClick}>
-                    <img src="img/hangup.svg" alt="Hangup" title="Hangup" width="25" height="26"/>
+                    <img src="img/hangup.svg" alt={ _t('Hangup') } title={ _t('Hangup') } width="25" height="26"/>
                 </div>;
         }
         else {
             callButton =
-                <div key="controls_call" className="mx_MessageComposer_voicecall" onClick={this.onVoiceCallClick} title="Voice call">
+                <div key="controls_call" className="mx_MessageComposer_voicecall" onClick={this.onVoiceCallClick} title={ _t('Voice call') }>
                     <TintableSvg src="img/icon-call.svg" width="35" height="35"/>
                 </div>;
             videoCallButton =
-                <div key="controls_videocall" className="mx_MessageComposer_videocall" onClick={this.onCallClick} title="Video call">
+                <div key="controls_videocall" className="mx_MessageComposer_videocall" onClick={this.onCallClick} title={ _t('Video call') }>
                     <TintableSvg src="img/icons-video.svg" width="35" height="35"/>
                 </div>;
         }
@@ -280,7 +280,7 @@ export default class MessageComposer extends React.Component {
             // complex because of conference calls.
             var uploadButton = (
                 <div key="controls_upload" className="mx_MessageComposer_upload"
-                        onClick={this.onUploadClick} title="Upload file">
+                        onClick={this.onUploadClick} title={ _t('Upload file') }>
                     <TintableSvg src="img/icons-upload.svg" width="35" height="35"/>
                     <input ref="uploadInput" type="file"
                         style={uploadInputStyle}
@@ -300,7 +300,7 @@ export default class MessageComposer extends React.Component {
             );
 
             const placeholderText = roomIsEncrypted ?
-                "Send an encrypted message…" : "Send a message (unencrypted)…";
+                _t('Send an encrypted message') + '…' : _t('Send a message (unencrypted)') + '…';
 
             controls.push(
                 <MessageComposerInput
@@ -325,7 +325,7 @@ export default class MessageComposer extends React.Component {
         } else {
             controls.push(
                 <div key="controls_error" className="mx_MessageComposer_noperm_error">
-                    You do not have permission to post to this room
+                    { _t('You do not have permission to post to this room') }
                 </div>
             );
         }
@@ -354,7 +354,7 @@ export default class MessageComposer extends React.Component {
                     mx_filterFlipColor: true,
                 });
                 return <img className={className}
-                            title={name}
+                            title={ _t(name) }
                             onMouseDown={disabled ? null : onFormatButtonClicked}
                             key={name}
                             src={`img/button-text-${name}${suffix}.svg`}
@@ -374,11 +374,11 @@ export default class MessageComposer extends React.Component {
                         <div className="mx_MessageComposer_formatbar" style={this.state.showFormatting ? {} : {display: 'none'}}>
                             {formatButtons}
                             <div style={{flex: 1}}></div>
-                            <img title={`Turn Markdown ${this.state.inputState.isRichtextEnabled ? 'on' : 'off'}`}
+                            <img title={ this.state.inputState.isRichtextEnabled ? _t("Turn Markdown on") : _t("Turn Markdown off") }
                                  onMouseDown={this.onToggleMarkdownClicked}
                                 className="mx_MessageComposer_formatbar_markdown mx_filterFlipColor"
                                 src={`img/button-md-${!this.state.inputState.isRichtextEnabled}.png`} />
-                            <img title="Hide Text Formatting Toolbar"
+                            <img title={ _t("Hide Text Formatting Toolbar") }
                                  onClick={this.onToggleFormattingClicked}
                                  className="mx_MessageComposer_formatbar_cancel mx_filterFlipColor"
                                  src="img/icon-text-cancel.svg" />

src/components/views/rooms/MessageComposerInput.js

@@ -30,6 +30,7 @@ import type {MatrixClient} from 'matrix-js-sdk/lib/matrix';
 import SlashCommands from '../../../SlashCommands';
 import Modal from '../../../Modal';
 import sdk from '../../../index';
+import { _t } from '../../../languageHandler';
 
 import dis from '../../../dispatcher';
 import KeyCode from '../../../KeyCode';
@@ -504,8 +505,8 @@ export default class MessageComposerInput extends React.Component {
                     console.error("Command failure: %s", err);
                     var ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
                     Modal.createDialog(ErrorDialog, {
-                        title: "Server error",
-                        description: ((err && err.message) ? err.message : "Server unavailable, overloaded, or something else went wrong."),
+                        title: _t("Server error"),
+                        description: ((err && err.message) ? err.message : _t("Server unavailable, overloaded, or something else went wrong.")),
                     });
                 });
             }
@@ -513,8 +514,8 @@ export default class MessageComposerInput extends React.Component {
                 console.error(cmd.error);
                 var ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
                 Modal.createDialog(ErrorDialog, {
-                    title: "Command error",
-                    description: cmd.error
+                    title: _t("Command error"),
+                    description: cmd.error,
                 });
             }
             return true;
@@ -719,7 +720,7 @@ export default class MessageComposerInput extends React.Component {
                 <div className={className}>
                     <img className="mx_MessageComposer_input_markdownIndicator mx_filterFlipColor"
                          onMouseDown={this.onMarkdownToggleClicked}
-                         title={`Markdown is ${this.state.isRichtextEnabled ? 'disabled' : 'enabled'}`}
+                         title={ this.state.isRichtextEnabled ? _t("Markdown is disabled") : _t("Markdown is enabled")}
                          src={`img/button-md-${!this.state.isRichtextEnabled}.png`} />
                     <Editor ref="editor"
                             placeholder={this.props.placeholder}

src/components/views/rooms/MessageComposerInputOld.js

@@ -20,6 +20,7 @@ var SlashCommands = require("../../../SlashCommands");
 var Modal = require("../../../Modal");
 var MemberEntry = require("../../../TabCompleteEntries").MemberEntry;
 var sdk = require('../../../index');
+import { _t } from '../../../languageHandler';
 import UserSettingsStore from "../../../UserSettingsStore";
 
 var dis = require("../../../dispatcher");
@@ -294,8 +295,8 @@ export default React.createClass({
             else {
                 var ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
                 Modal.createDialog(ErrorDialog, {
-                    title: "Unknown command",
-                    description: "Usage: /markdown on|off"
+                    title: _t("Unknown command"),
+                    description: _t("Usage") + ": /markdown on|off",
                 });
             }
             return;
@@ -314,8 +315,8 @@ export default React.createClass({
                     console.error("Command failure: %s", err);
                     var ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
                     Modal.createDialog(ErrorDialog, {
-                        title: "Server error",
-                        description: ((err && err.message) ? err.message : "Server unavailable, overloaded, or something else went wrong."),
+                        title: _t("Server error"),
+                        description: ((err && err.message) ? err.message : _t("Server unavailable, overloaded, or something else went wrong.")),
                     });
                 });
             }
@@ -323,8 +324,8 @@ export default React.createClass({
                 console.error(cmd.error);
                 var ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
                 Modal.createDialog(ErrorDialog, {
-                    title: "Command error",
-                    description: cmd.error
+                    title: _t("Command error"),
+                    description: cmd.error,
                 });
             }
             return;