Push WIP
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ansuz
311
www/_socket/main.js
Normal file
311
www/_socket/main.js
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define([
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'/api/config?cb=' + Math.random().toString(16).substring(2),
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'/common/messages.js',
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'/common/crypto.js',
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'/_socket/realtime-input.js',
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'/common/convert.js',
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'/_socket/toolbar.js',
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'/common/cursor.js',
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'/common/json-ot.js',
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'/bower_components/diff-dom/diffDOM.js',
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'/bower_components/jquery/dist/jquery.min.js',
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'/customize/pad.js'
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], function (Config, Messages, Crypto, realtimeInput, Convert, Toolbar, Cursor, JsonOT) {
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var $ = window.jQuery;
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var ifrw = $('#pad-iframe')[0].contentWindow;
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var Ckeditor; // to be initialized later...
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var DiffDom = window.diffDOM;
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window.Convert = Convert;
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window.Toolbar = Toolbar;
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var userName = Crypto.rand64(8),
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toolbar;
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var module = {};
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var isNotMagicLine = function (el) {
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// factor as:
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// return !(el.tagName === 'SPAN' && el.contentEditable === 'false');
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var filter = (el.tagName === 'SPAN' && el.contentEditable === 'false');
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if (filter) {
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console.log("[hyperjson.serializer] prevented an element" +
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"from being serialized:", el);
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return false;
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}
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return true;
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};
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var andThen = function (Ckeditor) {
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$(window).on('hashchange', function() {
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window.location.reload();
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});
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if (window.location.href.indexOf('#') === -1) {
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window.location.href = window.location.href + '#' + Crypto.genKey();
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return;
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}
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var fixThings = false;
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var key = Crypto.parseKey(window.location.hash.substring(1));
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var editor = window.editor = Ckeditor.replace('editor1', {
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// https://dev.ckeditor.com/ticket/10907
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needsBrFiller: fixThings,
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needsNbspFiller: fixThings,
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removeButtons: 'Source,Maximize',
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// magicline plugin inserts html crap into the document which is not part of the
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// document itself and causes problems when it's sent across the wire and reflected back
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// but we filter it now, so that's ok.
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removePlugins: 'resize'
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});
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editor.on('instanceReady', function (Ckeditor) {
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editor.execCommand('maximize');
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var documentBody = ifrw.$('iframe')[0].contentDocument.body;
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documentBody.innerHTML = Messages.initialState;
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var inner = window.inner = documentBody;
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var cursor = window.cursor = Cursor(inner);
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var $textarea = $('#feedback');
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var setEditable = function (bool) {
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// inner.style.backgroundColor = bool? 'unset': 'grey';
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inner.setAttribute('contenteditable', bool);
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};
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// don't let the user edit until the pad is ready
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setEditable(false);
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var diffOptions = {
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preDiffApply: function (info) {
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/* TODO DiffDOM will filter out magicline plugin elements
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in practice this will make it impossible to use it
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while someone else is typing, which could be annoying
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we should check when such an element is going to be
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removed, and prevent that from happening. */
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// no use trying to recover the cursor if it doesn't exist
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if (!cursor.exists()) { return; }
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/* frame is either 0, 1, 2, or 3, depending on which
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cursor frames were affected: none, first, last, or both
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*/
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var frame = info.frame = cursor.inNode(info.node);
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if (!frame) { return; }
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if (typeof info.diff.oldValue === 'string' && typeof info.diff.newValue === 'string') {
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var pushes = cursor.pushDelta(info.diff.oldValue, info.diff.newValue);
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if (frame & 1) {
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// push cursor start if necessary
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if (pushes.commonStart < cursor.Range.start.offset) {
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cursor.Range.start.offset += pushes.delta;
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}
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}
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if (frame & 2) {
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// push cursor end if necessary
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if (pushes.commonStart < cursor.Range.end.offset) {
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cursor.Range.end.offset += pushes.delta;
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}
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}
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}
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},
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postDiffApply: function (info) {
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if (info.frame) {
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if (info.node) {
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if (info.frame & 1) { cursor.fixStart(info.node); }
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if (info.frame & 2) { cursor.fixEnd(info.node); }
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} else { console.error("info.node did not exist"); }
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var sel = cursor.makeSelection();
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var range = cursor.makeRange();
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cursor.fixSelection(sel, range);
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}
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}
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};
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var initializing = true;
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var assertStateMatches = function () {
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var userDocState = module.realtimeInput.realtime.getUserDoc();
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var currentState = $textarea.val();
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if (currentState !== userDocState) {
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console.log({
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userDocState: userDocState,
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currentState: currentState
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});
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throw new Error("currentState !== userDocState");
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}
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};
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var updateDebugTextarea = function (shjson) {
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window.setTimeout(function () {
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$textarea.val(shjson);
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}, 0);
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};
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// apply patches, and try not to lose the cursor in the process!
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var applyHjson = function (shjson) {
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setEditable(false);
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var userDocStateDom = Convert.hjson.to.dom(JSON.parse(shjson));
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userDocStateDom.setAttribute("contenteditable", "true"); // lol wtf
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var DD = new DiffDom(diffOptions);
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//assertStateMatches();
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var patch = (DD).diff(inner, userDocStateDom);
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(DD).apply(inner, patch);
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// push back to the textarea so we get a userDocState
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setEditable(true);
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};
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var onRemote = function (info) {
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if (initializing) { return; }
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var shjson = info.realtime.getUserDoc();
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// remember where the cursor is
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cursor.update();
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// build a dom from HJSON, diff, and patch the editor
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applyHjson(shjson);
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//updateDebugTextarea(shjson);
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};
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var onInit = function (info) {
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var $bar = $('#pad-iframe')[0].contentWindow.$('#cke_1_toolbox');
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toolbar = info.realtime.toolbar = Toolbar.create($bar, userName, info.realtime);
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/* TODO handle disconnects and such*/
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};
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var onReady = function (info) {
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console.log("Unlocking editor");
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initializing = false;
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setEditable(true);
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var shjson = info.realtime.getUserDoc();
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applyHjson(shjson);
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};
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var onAbort = function (info) {
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console.log("Aborting the session!");
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// stop the user from continuing to edit
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setEditable(false);
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// TODO inform them that the session was torn down
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toolbar.failed();
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};
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var realtimeOptions = {
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// configuration :D
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doc: inner,
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// first thing called
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onInit: onInit,
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onReady: onReady,
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// when remote changes occur
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onRemote: onRemote,
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// handle aborts
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onAbort: onAbort,
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// provide initialstate...
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initialState: JSON.stringify(Convert.core.hyperjson.fromDOM(inner, isNotMagicLine)),
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// really basic operational transform
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// reject patch if it results in invalid JSON
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transformFunction : JsonOT.validate,
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// websocketURL, ofc
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websocketURL: Config.websocketURL,
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// username
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userName: userName,
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// communication channel name
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channel: key.channel,
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// encryption key
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cryptKey: key.cryptKey
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};
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var rti = module.realtimeInput = window.rti = realtimeInput.start(realtimeOptions);
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var propogate = function () {
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var hjson = Convert.core.hyperjson.fromDOM(inner, isNotMagicLine);
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var shjson = JSON.stringify(hjson);
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rti.propogate(shjson);
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rti.onEvent(shjson);
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};
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var testInput = window.testInput = function (el, offset) {
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var i = 0,
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j = offset,
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input = "The quick red fox jumped over the lazy brown dog. ",
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l = input.length,
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errors = 0,
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max_errors = 15,
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interval;
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var cancel = function () {
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if (interval) { window.clearInterval(interval); }
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};
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interval = window.setInterval(function () {
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propogate();
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try {
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el.replaceData(j, 0, input.charAt(i));
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} catch (err) {
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errors++;
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if (errors >= max_errors) {
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console.log("Max error number exceeded");
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cancel();
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}
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console.error(err);
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var next = document.createTextNode("");
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el.parentNode.appendChild(next);
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el = next;
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j = 0;
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}
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i = (i + 1) % l;
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j++;
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}, 200);
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return {
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cancel: cancel
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};
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};
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var easyTest = window.easyTest = function () {
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cursor.update();
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var start = cursor.Range.start;
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var test = testInput(start.el, start.offset);
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propogate();
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return test;
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};
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editor.on('change', propogate);
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});
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};
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var interval = 100;
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var first = function () {
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Ckeditor = ifrw.CKEDITOR;
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if (Ckeditor) {
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andThen(Ckeditor);
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} else {
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console.log("Ckeditor was not defined. Trying again in %sms",interval);
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setTimeout(first, interval);
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}
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};
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$(first);
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});
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