342 lines
13 KiB
JavaScript
342 lines
13 KiB
JavaScript
define([
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'jquery',
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'/common/common-interface.js',
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'/bower_components/nthen/index.js',
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//'/bower_components/chainpad-json-validator/json-ot.js',
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'/bower_components/chainpad/chainpad.dist.js',
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], function ($, UI, nThen, ChainPad /* JsonOT */) {
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//var ChainPad = window.ChainPad;
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var History = {};
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History.create = function (common, config) {
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if (!config.$toolbar) { return void console.error("config.$toolbar is undefined");}
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if (History.loading) { return void console.error("History is already being loaded..."); }
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History.loading = true;
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var $toolbar = config.$toolbar;
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if (!config.applyVal || !config.setHistory || !config.onLocal || !config.onRemote) {
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throw new Error("Missing config element: applyVal, onLocal, onRemote, setHistory");
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}
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var getStates = function (rt) {
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var states = [];
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var b = rt.getAuthBlock();
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if (b) { states.unshift(b); }
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while (b.getParent()) {
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b = b.getParent();
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states.unshift(b);
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}
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return states;
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};
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var createRealtime = function (config) {
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return ChainPad.create({
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userName: 'history',
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validateContent: function (content) {
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try {
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JSON.parse(content);
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return true;
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} catch (e) {
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console.log('Failed to parse, rejecting patch');
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return false;
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}
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},
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initialState: '',
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logLevel: config.debug ? 2 : 0,
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noPrune: true
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});
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};
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var loadFullHistory = function (config, common, cb) {
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var realtime = createRealtime(config);
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common.getFullHistory(realtime, function () {
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cb(null, realtime);
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});
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};
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loadFullHistory = loadFullHistory;
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var fillChainPad = function (realtime, messages) {
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messages.forEach(function (m) {
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realtime.message(m);
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});
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};
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var allMessages = [];
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var lastKnownHash;
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var isComplete = false;
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var loadMoreHistory = function (config, common, cb) {
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if (isComplete) { return void cb ('EFULL'); }
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var realtime = createRealtime(config);
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var sframeChan = common.getSframeChannel();
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sframeChan.query('Q_GET_HISTORY_RANGE', {
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lastKnownHash: lastKnownHash
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}, function (err, data) {
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if (err) { return void console.error(err); }
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if (!Array.isArray(data.messages)) { return void console.error('Not an array!'); }
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lastKnownHash = data.lastKnownHash;
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isComplete = data.isFull;
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Array.prototype.unshift.apply(allMessages, data.messages); // Destructive concat
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fillChainPad(realtime, allMessages);
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cb (null, realtime, data.isFull);
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});
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};
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// config.setHistory(bool, bool)
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// - bool1: history value
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// - bool2: reset old content?
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var render = function (val) {
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if (typeof val === "undefined") { return; }
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try {
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config.applyVal(val);
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} catch (e) {
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// Probably a parse error
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console.error(e);
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}
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};
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var onClose = function () { config.setHistory(false, true); };
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var onRevert = function () {
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config.setHistory(false, false);
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config.onLocal();
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config.onRemote();
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};
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config.setHistory(true);
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var Messages = common.Messages;
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var realtime;
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var states = [];
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var c = 0;//states.length - 1;
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var $hist = $toolbar.find('.cp-toolbar-history');
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var $left = $toolbar.find('.cp-toolbar-leftside');
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var $right = $toolbar.find('.cp-toolbar-rightside');
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var $cke = $toolbar.find('.cke_toolbox_main');
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$hist.html('').css('display', 'flex');
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$left.hide();
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$right.hide();
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$cke.hide();
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UI.spinner($hist).get().show();
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var onUpdate;
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var update = function (newRt) {
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realtime = newRt;
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if (!realtime) { return []; }
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states = getStates(realtime);
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if (typeof onUpdate === "function") { onUpdate(); }
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return states;
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};
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var $loadMore, $version, get;
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// Get the content of the selected version, and change the version number
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var loading = false;
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var loadMore = function (cb) {
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if (loading) { return; }
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loading = true;
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$loadMore.removeClass('fa fa-ellipsis-h')
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.append($('<span>', {'class': 'fa fa-refresh fa-spin fa-3x fa-fw'}));
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loadMoreHistory(config, common, function (err, newRt, isFull) {
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if (err === 'EFULL') {
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$loadMore.off('click').hide();
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get(c);
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$version.show();
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return;
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}
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loading = false;
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if (err) { return void console.error(err); }
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update(newRt);
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$loadMore.addClass('fa fa-ellipsis-h').html('');
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get(c);
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if (isFull) {
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$loadMore.off('click').hide();
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$version.show();
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}
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if (cb) { cb(); }
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});
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};
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get = function (i) {
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i = parseInt(i);
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if (isNaN(i)) { return; }
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if (i > 0) { i = 0; }
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if (i < -(states.length - 2)) { i = -(states.length - 2); }
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if (i <= -(states.length - 11)) {
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loadMore();
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}
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var idx = states.length - 1 + i;
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var val = states[idx].getContent().doc;
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c = i;
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if (typeof onUpdate === "function") { onUpdate(); }
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$hist.find('.cp-toolbar-history-next, .cp-toolbar-history-previous, ' +
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'.cp-toolbar-history-fast-next, .cp-toolbar-history-fast-previous')
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.css('visibility', '');
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if (c === -(states.length-1)) {
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$hist.find('.cp-toolbar-history-previous').css('visibility', 'hidden');
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$hist.find('.cp-toolbar-history-fast-previous').css('visibility', 'hidden');
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}
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if (c === 0) {
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$hist.find('.cp-toolbar-history-next').css('visibility', 'hidden');
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$hist.find('.cp-toolbar-history-fast-next').css('visibility', 'hidden');
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}
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var $pos = $hist.find('.cp-toolbar-history-pos');
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var p = 100 * (1 - (-c / (states.length-2)));
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$pos.css('margin-left', p+'%');
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// Display the version when the full history is loaded
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// Note: the first version is always empty and probably can't be displayed, so
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// we can consider we have only states.length - 1 versions
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$version.text(idx + ' / ' + (states.length-1));
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if (config.debug) {
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console.log(states[idx]);
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var ops = states[idx] && states[idx].getPatch() && states[idx].getPatch().operations;
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if (Array.isArray(ops)) {
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ops.forEach(function (op) { console.log(op); });
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}
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}
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return val || '';
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};
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var getNext = function (step) {
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return typeof step === "number" ? get(c + step) : get(c + 1);
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};
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var getPrevious = function (step) {
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return typeof step === "number" ? get(c - step) : get(c - 1);
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};
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// Create the history toolbar
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var display = function () {
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$hist.html('');
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var $rev = $('<button>', {
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'class':'cp-toolbar-history-revert buttonSuccess fa fa-check-circle-o',
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title: Messages.history_restoreTitle
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}).appendTo($hist);//.text(Messages.history_restore);
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if (History.readOnly) { $rev.css('visibility', 'hidden'); }
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$('<span>', {'class': 'cp-history-filler'}).appendTo($hist);
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var $fastPrev = $('<button>', {
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'class': 'cp-toolbar-history-fast-previous fa fa-fast-backward buttonPrimary',
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title: Messages.history_prev
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}).appendTo($hist);
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var $prev =$('<button>', {
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'class': 'cp-toolbar-history-previous fa fa-step-backward buttonPrimary',
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title: Messages.history_prev
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}).appendTo($hist);
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var $nav = $('<div>', {'class': 'cp-toolbar-history-goto'}).appendTo($hist);
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var $next = $('<button>', {
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'class': 'cp-toolbar-history-next fa fa-step-forward buttonPrimary',
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title: Messages.history_next
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}).appendTo($hist);
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var $fastNext = $('<button>', {
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'class': 'cp-toolbar-history-fast-next fa fa-fast-forward buttonPrimary',
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title: Messages.history_next
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}).appendTo($hist);
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$('<span>', {'class': 'cp-history-filler'}).appendTo($hist);
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var $close = $('<button>', {
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'class':'cp-toolbar-history-close fa fa-window-close',
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title: Messages.history_closeTitle
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}).appendTo($hist);
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var $bar = $('<div>', {'class': 'cp-toolbar-history-bar'}).appendTo($nav);
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var $container = $('<div>', {'class':'cp-toolbar-history-pos-container'}).appendTo($bar);
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$('<div>', {'class': 'cp-toolbar-history-pos'}).appendTo($container);
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$version = $('<span>', {
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'class': 'cp-toolbar-history-version'
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}).prependTo($bar).hide();
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$loadMore = $('<button>', {
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'class':'cp-toolbar-history-loadmore fa fa-ellipsis-h',
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title: Messages.history_loadMore
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}).click(function () {
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loadMore(function () {
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get(c);
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});
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}).prependTo($container);
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// Load a version when clicking on the bar
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$container.click(function (e) {
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e.stopPropagation();
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if (!$(e.target).is('.cp-toolbar-history-pos-container')) { return; }
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var p = e.offsetX / $container.width();
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var v = -Math.round((states.length - 1) * (1 - p));
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render(get(v));
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});
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onUpdate = function () {
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// Called when a new version is loaded
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};
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var onKeyDown, onKeyUp;
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var close = function () {
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$hist.hide();
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$left.show();
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$right.show();
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$cke.show();
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$(window).trigger('resize');
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$(window).off('keydown', onKeyDown);
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$(window).off('keyup', onKeyUp);
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};
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// Version buttons
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$prev.click(function () { render(getPrevious()); });
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$next.click(function () { render(getNext()); });
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$fastPrev.click(function () { render(getPrevious(10)); });
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$fastNext.click(function () { render(getNext(10)); });
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onKeyDown = function (e) {
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var p = function () { e.preventDefault(); };
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if ([37, 40].indexOf(e.which) >= 0) { p(); return render(getPrevious()); } // Left
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if ([38, 39].indexOf(e.which) >= 0) { p(); return render(getNext()); } // Right
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if (e.which === 33) { p(); return render(getNext(10)); } // PageUp
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if (e.which === 34) { p(); return render(getPrevious(10)); } // PageUp
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if (e.which === 27) { p(); $close.click(); }
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};
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onKeyUp = function (e) { e.stopPropagation(); };
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$(window).on('keydown', onKeyDown).on('keyup', onKeyUp).focus();
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// Close & restore buttons
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$close.click(function () {
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states = [];
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close();
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onClose();
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});
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$rev.click(function () {
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UI.confirm(Messages.history_restorePrompt, function (yes) {
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if (!yes) { return; }
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close();
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onRevert();
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UI.log(Messages.history_restoreDone);
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});
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});
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// Display the latest content
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render(get(c));
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$(window).trigger('resize');
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};
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// Load all the history messages into a new chainpad object
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loadMoreHistory(config, common, function (err, newRt, isFull) {
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History.readOnly = common.getMetadataMgr().getPrivateData().readOnly;
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History.loading = false;
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if (err) { throw new Error(err); }
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update(newRt);
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c = states.length - 1;
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display();
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if (isFull) {
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$loadMore.off('click').hide();
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$version.show();
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}
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});
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};
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return History;
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});
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