Create irc layout

res/css/views/rooms/_IRCLayout.scss

@@ -0,0 +1,124 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+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.
+*/
+
+$name-width: 50px;
+$icon-width: 14px;
+$timestamp-width: 45px;
+$right-padding: 5px;
+
+.mx_IRCLayout {
+
+    line-height: $font-22px !important;
+
+    .mx_EventTile {
+        display: flex;
+        flex-direction: row;
+        align-items: flex-start;
+
+        > * {
+            margin-right: $right-padding;
+        }
+
+        > .mx_EventTile_msgOption {
+            order: 4;
+            flex-shrink: 0;
+        }
+
+        > .mx_SenderProfile {
+            order: 2;
+            flex-shrink: 0;
+            width: $name-width;
+            text-overflow: ellipsis;
+            text-align: right;
+            display: flex;
+            align-items: center;
+        }
+
+        > .mx_EventTile_line {
+            order: 3;
+            flex-grow: 1;
+        }
+
+        > .mx_EventTile_avatar {
+            order: 1;
+            position: relative;
+            top: 0;
+            left: 0;
+            flex-shrink: 0;
+            height: 22px;
+            display: flex;
+            align-items: center;
+
+            > .mx_BaseAvatar {
+                height: 1rem;
+                width: 1rem;
+            }
+        }
+
+        .mx_MessageTimestamp {
+            font-size: $font-10px;
+            width: $timestamp-width;
+            text-align: right;
+        }
+
+        .mx_EventTile_line, .mx_EventTile_reply {
+            padding: 0;
+        }
+
+        .mx_EventTile_e2eIcon {
+            position: relative;
+            right: unset;
+            left: unset;
+            top: -2px;
+            padding: 0;
+        }
+
+        .mx_EventTile_line > * {
+            display: inline-block;
+        }
+    }
+
+    .mx_EventListSummary {
+        > .mx_EventTile_line {
+            padding-left: calc($name-width + $icon-width + $timestamp-width + 3 * $right-padding); // 15 px of padding
+        }
+    }
+
+    .mx_EventTile.mx_EventTile_info {
+        .mx_EventTile_avatar {
+            left: calc($name-width + 10px + $icon-width);
+            top: 0;
+        }
+
+        .mx_EventTile_line {
+            left: calc($name-width + 10px + $icon-width);
+        }
+
+        .mx_TextualEvent {
+            line-height: $font-22px;
+        }
+    }
+
+    .mx_EventTile_continuation:not(.mx_EventTile_info) {
+        .mx_EventTile_avatar {
+            visibility: hidden;
+        }
+
+        .mx_SenderProfile {
+            visibility: hidden;
+        }
+    }
+}

src/components/structures/MessagePanel.js

@@ -607,6 +607,7 @@ export default class MessagePanel extends React.Component {
                         isSelectedEvent={highlight}
                         getRelationsForEvent={this.props.getRelationsForEvent}
                         showReactions={this.props.showReactions}
+                        useIRCLayout={this.state.useIRCLayout}
                     />
                 </TileErrorBoundary>
             </li>,

src/components/views/rooms/EventTile.js

@@ -206,6 +206,9 @@ export default createReactClass({
 
         // whether to show reactions for this event
         showReactions: PropTypes.bool,
+
+        // whether to use the irc layout
+        useIRCLayout: PropTypes.bool,
     },
 
     getDefaultProps: function() {
@@ -653,6 +656,8 @@ export default createReactClass({
         const classes = classNames({
             mx_EventTile_bubbleContainer: isBubbleMessage,
             mx_EventTile: true,
+            mx_EventTile_irc: this.props.useIRCLayout,
+            mx_EventTile_group: !this.props.useIRCLayout,
             mx_EventTile_isEditing: isEditing,
             mx_EventTile_info: isInfoMessage,
             mx_EventTile_12hr: this.props.isTwelveHour,
@@ -696,6 +701,9 @@ export default createReactClass({
             // joins/parts/etc
             avatarSize = 14;
             needsSenderProfile = false;
+        } else if (this.props.useIRCLayout) {
+            avatarSize = 14;
+            needsSenderProfile = true;
         } else if (this.props.continuation && this.props.tileShape !== "file_grid") {
             // no avatar or sender profile for continuation messages
             avatarSize = 0;
@@ -879,21 +887,29 @@ export default createReactClass({
                     this.props.permalinkCreator,
                     this._replyThread,
                 );
+
+                const linkedTimestamp = <a
+                        href={permalink}
+                        onClick={this.onPermalinkClicked}
+                        aria-label={formatTime(new Date(this.props.mxEvent.getTs()), this.props.isTwelveHour)}
+                    >
+                        { timestamp }
+                    </a>;
+
+                const groupTimestamp = !this.props.useIRCLayout ? linkedTimestamp : null;
+                const ircTimestamp = this.props.useIRCLayout ? linkedTimestamp : null;
+
+
                 // tab-index=-1 to allow it to be focusable but do not add tab stop for it, primarily for screen readers
                 return (
                     <div className={classes} tabIndex={-1}>
+                        { ircTimestamp }
                         <div className="mx_EventTile_msgOption">
                             { readAvatars }
                         </div>
                         { sender }
                         <div className="mx_EventTile_line">
-                            <a
+                            { groupTimestamp }
-                                href={permalink}
-                                onClick={this.onPermalinkClicked}
-                                aria-label={formatTime(new Date(this.props.mxEvent.getTs()), this.props.isTwelveHour)}
-                            >
-                                { timestamp }
-                            </a>
                             { !isBubbleMessage && this._renderE2EPadlock() }
                             { thread }
                             <EventTileType ref={this._tile}