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269 lines
9.3 KiB
JavaScript
269 lines
9.3 KiB
JavaScript
define([
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'jquery',
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'/bower_components/chainpad-json-validator/json-ot.js',
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'/bower_components/chainpad-crypto/crypto.js',
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'/bower_components/chainpad/chainpad.dist.js',
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], function ($, JsonOT, Crypto) {
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var ChainPad = window.ChainPad;
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var History = {};
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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 loadHistory = function (config, common, cb) {
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var network = common.getNetwork();
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var hkn = network.historyKeeper;
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var wcId = common.hrefToHexChannelId(config.href || window.location.href);
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var createRealtime = function () {
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return ChainPad.create({
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userName: 'history',
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initialState: '',
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transformFunction: JsonOT.validate,
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logLevel: 0,
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noPrune: true
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});
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};
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var realtime = createRealtime();
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var parsed = config.href ? common.parsePadUrl(config.href) : {};
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var secret = common.getSecrets(parsed.type, parsed.hash);
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History.readOnly = 1;
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if (!secret.keys) {
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secret.keys = secret.key;
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History.readOnly = 2;
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}
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else if (!secret.keys.validateKey) {
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History.readOnly = 0;
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}
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var crypto = Crypto.createEncryptor(secret.keys);
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var to = window.setTimeout(function () {
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cb('[GET_FULL_HISTORY_TIMEOUT]');
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}, 30000);
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var parse = function (msg) {
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try {
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return JSON.parse(msg);
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} catch (e) {
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return null;
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}
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};
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var onMsg = function (msg) {
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var parsed = parse(msg);
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if (parsed[0] === 'FULL_HISTORY_END') {
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console.log('END');
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window.clearTimeout(to);
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cb(null, realtime);
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return;
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}
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if (parsed[0] !== 'FULL_HISTORY') { return; }
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if (parsed[1] && parsed[1].validateKey) { // First message
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secret.keys.validateKey = parsed[1].validateKey;
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return;
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}
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msg = parsed[1][4];
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if (msg) {
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msg = msg.replace(/^cp\|/, '');
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var decryptedMsg = crypto.decrypt(msg, secret.keys.validateKey);
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realtime.message(decryptedMsg);
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}
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};
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network.on('message', function (msg) {
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onMsg(msg);
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});
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network.sendto(hkn, JSON.stringify(['GET_FULL_HISTORY', wcId, secret.keys.validateKey]));
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};
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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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// 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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var onReady = function () {
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config.setHistory(true);
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};
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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 = states.length - 1;
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var $hist = $toolbar.find('.cryptpad-toolbar-history');
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var $left = $toolbar.find('.cryptpad-toolbar-leftside');
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var $right = $toolbar.find('.cryptpad-toolbar-rightside');
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var $cke = $toolbar.find('.cke_toolbox_main');
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$hist.html('').show();
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$left.hide();
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$right.hide();
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$cke.hide();
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common.spinner($hist).get().show();
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var onUpdate;
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var update = function () {
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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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// Get the content of the selected version, and change the version number
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var 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 - 1) { i = states.length - 1; }
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var val = states[i].getContent().doc;
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c = i;
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if (typeof onUpdate === "function") { onUpdate(); }
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$hist.find('.next, .previous').css('visibility', '');
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if (c === states.length - 1) { $hist.find('.next').css('visibility', 'hidden'); }
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if (c === 0) { $hist.find('.previous').css('visibility', 'hidden'); }
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return val || '';
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};
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var getNext = function (step) {
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return typeof step === "number" ? get(c + step) : get(c + 1);
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};
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var getPrevious = function (step) {
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return typeof step === "number" ? get(c - step) : get(c - 1);
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};
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// Create the history toolbar
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var display = function () {
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$hist.html('');
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var $prev =$('<button>', {
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'class': '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 = $('<div>', {'class': 'goto'}).appendTo($hist);
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var $next = $('<button>', {
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'class': 'next fa fa-step-forward buttonPrimary',
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title: Messages.history_next
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}).appendTo($hist);
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$('<label>').text(Messages.history_version).appendTo($nav);
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var $cur = $('<input>', {
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'class' : 'gotoInput',
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'type' : 'number',
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'min' : '1',
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'max' : states.length
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}).val(c + 1).appendTo($nav).mousedown(function (e) {
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// stopPropagation because the event would be cancelled by the dropdown menus
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e.stopPropagation();
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});
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var $label2 = $('<label>').text(' / '+ states.length).appendTo($nav);
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$('<br>').appendTo($nav);
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var $close = $('<button>', {
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'class':'closeHistory',
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title: Messages.history_closeTitle
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}).text(Messages.history_closeTitle).appendTo($nav);
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var $rev = $('<button>', {
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'class':'revertHistory buttonSuccess',
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title: Messages.history_restoreTitle
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}).text(Messages.history_restore).appendTo($nav);
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if (!History.readOnly) { $rev.hide(); }
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onUpdate = function () {
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$cur.attr('max', states.length);
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$cur.val(c+1);
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$label2.text(' / ' + states.length);
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};
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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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};
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// Buttons actions
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$prev.click(function () { render(getPrevious()); });
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$next.click(function () { render(getNext()); });
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$cur.keydown(function (e) {
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var p = function () { e.preventDefault(); };
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if (e.which === 13) { p(); return render( get($cur.val() - 1) ); } // Enter
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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(); $close.click(); }
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}).keyup(function (e) { e.stopPropagation(); }).focus();
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$cur.on('change', function () {
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render( get($cur.val() - 1) );
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});
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$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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common.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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common.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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};
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// Load all the history messages into a new chainpad object
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loadHistory(config, common, function (err, newRt) {
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History.loading = false;
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if (err) { throw new Error(err); }
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realtime = newRt;
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update();
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c = states.length - 1;
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display();
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onReady();
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});
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};
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return History;
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});
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