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define([
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'jquery',
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'/api/config',
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'/bower_components/marked/marked.min.js',
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'/common/common-hash.js',
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'/common/common-util.js',
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'/common/hyperscript.js',
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'/common/inner/common-mediatag.js',
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'/common/media-tag.js',
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'/customize/messages.js',
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'/common/less.min.js',
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'/common/highlight/highlight.pack.js',
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'/lib/diff-dom/diffDOM.js',
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'/bower_components/tweetnacl/nacl-fast.min.js',
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'css!/common/highlight/styles/'+ (window.CryptPad_theme === 'dark' ? 'dark.css' : 'github.css')
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],function ($, ApiConfig, Marked, Hash, Util, h, MT, MediaTag, Messages, Less) {
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var DiffMd = {};
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var Highlight = window.hljs;
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var DiffDOM = window.diffDOM;
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var renderer = new Marked.Renderer();
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var restrictedRenderer = new Marked.Renderer();
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var pluginLoaded = Util.mkEvent();
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DiffMd.onPluginLoaded = pluginLoaded.reg;
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var mermaidThemeCSS = //".node rect { fill: #DDD; stroke: #AAA; } " +
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"rect.task, rect.task0, rect.task2 { stroke-width: 1 !important; rx: 0 !important; } " +
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"g.grid g.tick line { opacity: 0.25; }" +
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"g.today line { stroke: red; stroke-width: 1; stroke-dasharray: 3; opacity: 0.5; }";
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var Mermaid = {
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__stubbed: true,
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init: function () {
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require([
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'mermaid',
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'css!/code/mermaid-new.css'
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], function (_Mermaid) {
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console.debug("loaded mermaid");
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if (Mermaid.__stubbed) {
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Mermaid = _Mermaid;
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Mermaid.initialize({
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gantt: { axisFormat: '%m-%d', },
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flowchart: { htmlLabels: false, },
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theme: (window.CryptPad_theme === 'dark') ? 'dark' : 'default',
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"themeCSS": mermaidThemeCSS,
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});
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}
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pluginLoaded.fire();
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});
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}
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};
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var Mathjax = {
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__stubbed: true,
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tex2svg: function (a, b) {
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require([
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'/bower_components/MathJax/es5/tex-svg.js',
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], function () {
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console.debug("Loaded mathjax");
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if (Mathjax.__stubbed) {
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Mathjax = window.MathJax;
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}
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Mathjax.tex2svg(a, b);
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pluginLoaded.fire();
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});
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}
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};
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var drawMarkmap;
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var MarkMapTransform;
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var Markmap;
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var markmapLoaded = false;
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var loadMarkmap = function ($el) {
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require([
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'/lib/markmap/transform.min.js',
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'/lib/markmap/view.min.js',
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], function (_Transform, _View) {
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if (!markmapLoaded) {
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console.debug("Loaded markmap");
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MarkMapTransform = _Transform;
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Markmap = _View;
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markmapLoaded = true;
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}
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drawMarkmap($el);
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pluginLoaded.fire();
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});
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};
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var sfCommon;
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var fixMarkmapClickables = function ($svg) {
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// find all links in the tree and do the following for each one
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var onClick = function (e) {
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e.preventDefault();
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e.stopImmediatePropagation();
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var $el = $(e.target);
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// Open links only from the preview modal
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if (!sfCommon) { return void console.error('No sfCommon'); }
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var href = $el.attr('href');
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if (!href || !/^(https?:\/\/|\/)/.test(href)) { return; }
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if (/^http/.test(href)) {
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sfCommon.openUnsafeURL(href);
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return;
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}
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sfCommon.openURL(href);
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};
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$svg.find('a').click(onClick);
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// make sure the links added later by collapsing/expading the map are also safe
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var observer = new MutationObserver(function(mutations) {
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mutations.forEach(function(mutation) {
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if (mutation.type === 'childList') {
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var n;
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for (var i = 0; i < mutation.addedNodes.length; i++) {
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n = mutation.addedNodes[i];
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if (n.nodeName === "A") { return void n.addEventListener('click', onClick); }
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$(n).find('a').click(onClick);
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}
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}
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});
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});
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observer.observe($svg[0], {
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childList: true,
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subtree: true
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});
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};
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drawMarkmap = function ($el) {
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if (!markmapLoaded) { return void loadMarkmap($el); }
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if (!$el) { return console.error("no element provided"); }
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var data = MarkMapTransform.transform($el[0].getAttribute("markmap-source"));
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$el[0].innerHTML = "<svg width='100%' height='600'/>";
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Markmap.markmap($el[0].firstChild, data);
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fixMarkmapClickables($el);
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};
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var highlighter = function () {
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return function(code, lang) {
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if (lang) {
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try {
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return Highlight.highlight(lang, code).value;
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} catch (e) {
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return code;
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}
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}
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return code;
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};
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};
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Marked.setOptions({
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//sanitize: true, // Disable HTML
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renderer: renderer,
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highlight: highlighter(),
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});
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var toc = [];
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var getTOC = function () {
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var content = [h('h2', Messages.markdown_toc)];
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toc.forEach(function (obj) {
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// Only include level 2 headings
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var level = obj.level - 1;
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if (level < 1) { return; }
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var a = h('a.cp-md-toc-link', {
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href: '#',
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'data-href': obj.id,
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});
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a.innerHTML = obj.title;
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content.push(h('p.cp-md-toc-'+level, ['• ', a]));
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});
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return h('div.cp-md-toc', content).outerHTML;
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};
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var noHeadingId = false;
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DiffMd.render = function (md, sanitize, restrictedMd, noId) {
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Marked.setOptions({
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renderer: restrictedMd ? restrictedRenderer : renderer,
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});
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noHeadingId = noId;
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var r = Marked(md, {
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sanitize: sanitize,
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headerIds: !noId,
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gfm: true,
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});
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// Add Table of Content
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if (!restrictedMd) {
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r = r.replace(/<div class="cp-md-toc"><\/div>/g, getTOC());
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}
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toc = [];
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return r;
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};
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var mediaMap = {};
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var defaultCode = renderer.code;
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renderer.code = function (code, language) {
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if (!code || typeof(code) !== 'string' || !code.trim()) { return defaultCode.apply(renderer, arguments); }
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if (language === 'mermaid' && code.match(/^(graph|pie|gantt|sequenceDiagram|classDiagram|gitGraph)/)) {
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return '<pre class="mermaid" data-plugin="mermaid">'+Util.fixHTML(code)+'</pre>';
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} else if (language === 'markmap') {
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return '<pre class="markmap" data-plugin="markmap">'+Util.fixHTML(code)+'</pre>';
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} else if (language === 'mathjax') {
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return '<pre class="mathjax" data-plugin="mathjax">'+Util.fixHTML(code)+'</pre>';
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} else {
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return defaultCode.apply(renderer, arguments);
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}
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};
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restrictedRenderer.code = renderer.code;
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var _heading = renderer.heading;
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renderer.heading = function (text, level) {
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if (noHeadingId) {
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return _heading.apply(this, arguments);
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}
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var i = 0;
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var safeText = text.toLowerCase().replace(/[^\w]+/g, '-');
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var getId = function () {
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return 'cp-md-' + i + '-' + safeText;
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};
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var id = getId();
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var isAlreadyUsed = function (obj) { return obj.id === id; };
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while (toc.some(isAlreadyUsed)) {
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i++;
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id = getId();
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}
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toc.push({
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level: level,
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id: id,
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title: Util.stripTags(text)
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});
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return "<h" + level + " id=\"" + id + "\"><a href=\"#" + id + "\" class=\"anchor\"></a>" + text + "</h" + level + ">";
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};
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restrictedRenderer.heading = function (text) {
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return text;
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};
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// Tasks list
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var checkedTaskItemPtn = /^\s*(<p>)?\[[xX]\](<\/p>)?\s*/;
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var uncheckedTaskItemPtn = /^\s*(<p>)?\[ ?\](<\/p>)?\s*/;
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var bogusCheckPtn = /<input checked="" disabled="" type="checkbox">/;
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var bogusUncheckPtn = /<input disabled="" type="checkbox">/;
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renderer.listitem = function (text) {
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var isCheckedTaskItem = checkedTaskItemPtn.test(text);
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var isUncheckedTaskItem = uncheckedTaskItemPtn.test(text);
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var hasBogusCheckedInput = bogusCheckPtn.test(text);
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var hasBogusUncheckedInput = bogusUncheckPtn.test(text);
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var isCheckbox = true;
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if (isCheckedTaskItem) {
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text = text.replace(checkedTaskItemPtn,
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'<i class="fa fa-check-square" aria-hidden="true"></i>') + '\n';
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} else if (isUncheckedTaskItem) {
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text = text.replace(uncheckedTaskItemPtn,
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'<i class="fa fa-square-o" aria-hidden="true"></i>') + '\n';
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} else if (hasBogusCheckedInput) {
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text = text.replace(bogusCheckPtn,
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'<i class="fa fa-check-square" aria-hidden="true"></i>') + '\n';
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} else if (hasBogusUncheckedInput) {
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text = text.replace(bogusUncheckPtn,
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'<i class="fa fa-square-o" aria-hidden="true"></i>') + '\n';
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} else {
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isCheckbox = false;
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}
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var cls = (isCheckbox) ? ' class="todo-list-item"' : '';
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return '<li'+ cls + '>' + text + '</li>\n';
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};
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restrictedRenderer.listitem = function (text) {
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if (bogusCheckPtn.test(text)) {
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text = text.replace(bogusCheckPtn, '');
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}
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return '<li>' + text + '</li>\n';
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};
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var qualifiedHref = function (href) {
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if (typeof(window.URL) === 'undefined') { return href; }
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try {
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var url = new URL(href, ApiConfig.httpUnsafeOrigin);
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return url.href;
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} catch (err) {
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console.error(err);
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return href;
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}
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};
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var isLocalURL = function (href) {
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// treat all URLs as remote if you are using an ancient browser
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if (typeof(window.URL) === 'undefined') { return false; }
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try {
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var url = new URL(href, ApiConfig.httpUnsafeOrigin);
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// FIXME data URLs can be quite large, but that should be addressed
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// in the source markdown's, not the renderer
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if (url.protocol === 'data:') { return true; }
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var localURL = new URL(ApiConfig.httpUnsafeOrigin);
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return url.host === localURL.host;
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} catch (err) {
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return true;
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}
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};
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renderer.image = function (href, title, text) {
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if (isLocalURL(href) && href.slice(0, 6) !== '/file/') {
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return h('img', {
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src: href,
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title: title || '',
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alt: text,
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}).outerHTML;
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}
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if (href.slice(0,6) === '/file/') {
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// Mediatag using markdown syntax should not be used anymore so they don't support
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// password-protected files
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console.log('DEPRECATED: mediatag using markdown syntax!');
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var parsed = Hash.parsePadUrl(href);
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var secret = Hash.getSecrets('file', parsed.hash);
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var src = (ApiConfig.fileHost || '') +Hash.getBlobPathFromHex(secret.channel);
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var key = Hash.encodeBase64(secret.keys.cryptKey);
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var mt = h('media-tag', {
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src: src,
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'data-crypto-key': 'cryptpad:' + key,
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});
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return mt.outerHTML;
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}
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var warning = h('div.cp-inline-img-warning', [
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h('div.cp-inline-img', [
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h('img.cp-inline-img', {
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src: '/images/broken.png',
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//title: title || '', // FIXME sort out tippy issues (double-title)
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}),
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h('p.cp-alt-txt', text),
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]),
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h('span.cp-img-block-notice', {
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}, Messages.resources_imageBlocked),
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h('br'),
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h('a.cp-remote-img', {
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href: qualifiedHref(href),
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}, [
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Messages.resources_openInNewTab
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]),
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|
h('br'),
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h('a.cp-learn-more', {
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|
href: 'https://docs.cryptpad.fr/user_guide/security.html#remote-content',
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|
}, [
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|
Messages.resources_learnWhy
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]),
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|
]);
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return warning.outerHTML;
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|
};
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|
restrictedRenderer.image = renderer.image;
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|
var renderParagraph = function (p) {
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|
return /<media\-tag[\s\S]*>/i.test(p)? p + '\n': '<p>' + p + '</p>\n';
|
|
|
};
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|
|
renderer.paragraph = function (p) {
|
|
|
if (p === '[TOC]') {
|
|
|
return '<p><div class="cp-md-toc"></div></p>';
|
|
|
}
|
|
|
return renderParagraph(p);
|
|
|
};
|
|
|
restrictedRenderer.paragraph = function (p) {
|
|
|
return renderParagraph(p);
|
|
|
};
|
|
|
|
|
|
// Note: iframe, video and audio are used in mediatags and are allowed in rich text pads.
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|
|
var forbiddenTags = [
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|
|
'SCRIPT',
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|
|
//'IFRAME',
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|
|
'OBJECT',
|
|
|
'APPLET',
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|
|
//'VIDEO', // privacy implications of videos are the same as images
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|
|
//'AUDIO', // same with audio
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|
|
'SOURCE'
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|
|
];
|
|
|
var restrictedTags = [
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|
|
'IFRAME',
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|
|
'VIDEO',
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|
|
'AUDIO'
|
|
|
];
|
|
|
|
|
|
var unsafeTag = function (info) {
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|
|
/*if (info.node && $(info.node).parents('media-tag').length) {
|
|
|
// Do not remove elements inside a media-tag
|
|
|
return true;
|
|
|
}*/
|
|
|
if (['addAttribute', 'modifyAttribute'].indexOf(info.diff.action) !== -1) {
|
|
|
if (/^on/i.test(info.diff.name)) {
|
|
|
console.log("Rejecting forbidden element attribute with name", info.diff.name);
|
|
|
return true;
|
|
|
}
|
|
|
}
|
|
|
if (['addElement', 'replaceElement'].indexOf(info.diff.action) !== -1) {
|
|
|
var msg = "Rejecting forbidden tag of type (%s)";
|
|
|
if (info.diff.element && forbiddenTags.indexOf(info.diff.element.nodeName.toUpperCase()) !== -1) {
|
|
|
console.log(msg, info.diff.element.nodeName);
|
|
|
return true;
|
|
|
} else if (info.diff.newValue && forbiddenTags.indexOf(info.diff.newValue.nodeName.toUpperCase()) !== -1) {
|
|
|
console.log("Replacing restricted element type (%s) with PRE", info.diff.newValue.nodeName);
|
|
|
info.diff.newValue.nodeName = 'PRE';
|
|
|
}
|
|
|
}
|
|
|
};
|
|
|
|
|
|
|
|
|
var slice = function (coll) {
|
|
|
return Array.prototype.slice.call(coll);
|
|
|
};
|
|
|
|
|
|
var removeNode = function (node) {
|
|
|
if (!(node && node.parentElement)) { return; }
|
|
|
var parent = node.parentElement;
|
|
|
if (!parent) { return; }
|
|
|
console.debug('removing %s tag', node.nodeName);
|
|
|
parent.removeChild(node);
|
|
|
};
|
|
|
|
|
|
// Only allow iframe, video and audio with local source
|
|
|
var checkSrc = function (root) {
|
|
|
if (restrictedTags.indexOf(root.nodeName.toUpperCase()) === -1) { return true; }
|
|
|
return root.getAttribute && /^(blob\:|\/common\/pdfjs)/.test(root.getAttribute('src'));
|
|
|
};
|
|
|
|
|
|
var removeForbiddenTags = function (root) {
|
|
|
if (!root) { return; }
|
|
|
if (forbiddenTags.indexOf(root.nodeName.toUpperCase()) !== -1) { removeNode(root); }
|
|
|
if (!checkSrc(root)) { removeNode(root); }
|
|
|
slice(root.children).forEach(removeForbiddenTags);
|
|
|
};
|
|
|
|
|
|
/* remove listeners from the DOM */
|
|
|
var removeListeners = function (root) {
|
|
|
if (!root) { return; }
|
|
|
slice(root.attributes).map(function (attr) {
|
|
|
if (/^on/i.test(attr.name)) {
|
|
|
console.log('removing attribute', attr.name, root.attributes[attr.name]);
|
|
|
root.attributes.removeNamedItem(attr.name);
|
|
|
}
|
|
|
});
|
|
|
// all the way down
|
|
|
slice(root.children).forEach(removeListeners);
|
|
|
};
|
|
|
|
|
|
var domFromHTML = function (html) {
|
|
|
var Dom = new DOMParser().parseFromString(html, "text/html");
|
|
|
Dom.normalize();
|
|
|
removeForbiddenTags(Dom.body);
|
|
|
removeListeners(Dom.body);
|
|
|
return Dom;
|
|
|
};
|
|
|
|
|
|
var DD = new DiffDOM({
|
|
|
preDiffApply: function (info) {
|
|
|
if (unsafeTag(info)) { return true; }
|
|
|
},
|
|
|
});
|
|
|
|
|
|
var makeDiff = function (A, B, id) {
|
|
|
var Err;
|
|
|
var Els = [A, B].map(function (frag) {
|
|
|
if (typeof(frag) === 'object') {
|
|
|
if (!frag || (frag && !frag.body)) {
|
|
|
Err = "No body";
|
|
|
return;
|
|
|
}
|
|
|
var els = frag.body.querySelectorAll('#'+id);
|
|
|
if (els.length) {
|
|
|
return els[0];
|
|
|
}
|
|
|
}
|
|
|
Err = 'No candidate found';
|
|
|
});
|
|
|
if (Err) { return Err; }
|
|
|
var patch = DD.diff(Els[0], Els[1]);
|
|
|
return patch;
|
|
|
};
|
|
|
|
|
|
var plugins = {};
|
|
|
|
|
|
var removeMermaidClickables = function ($el) {
|
|
|
// find all links in the tree and do the following for each one
|
|
|
$el.find('a').each(function (index, a) {
|
|
|
var parent = a.parentElement;
|
|
|
if (!parent) { return; }
|
|
|
// iterate over the links' children and transform them into preceding children
|
|
|
// to preserve their visible ordering
|
|
|
slice(a.children).forEach(function (child) {
|
|
|
parent.insertBefore(child, a);
|
|
|
});
|
|
|
// remove the link once it has been emptied
|
|
|
$(a).remove();
|
|
|
});
|
|
|
// finally, find all 'clickable' items and remove the class
|
|
|
$el.find('.clickable').removeClass('clickable');
|
|
|
};
|
|
|
|
|
|
plugins.mermaid = {
|
|
|
name: 'mermaid',
|
|
|
attr: 'mermaid-source',
|
|
|
render: function ($el) {
|
|
|
Mermaid.init(undefined, $el);
|
|
|
// clickable elements in mermaid don't work well with our sandboxing setup
|
|
|
// the function below strips clickable elements but still leaves behind some artifacts
|
|
|
// tippy tooltips might still be useful, so they're not removed. It would be
|
|
|
// preferable to just support links, but this covers up a rough edge in the meantime
|
|
|
removeMermaidClickables($el);
|
|
|
}
|
|
|
};
|
|
|
|
|
|
plugins.markmap = {
|
|
|
name: 'markmap',
|
|
|
attr: 'markmap-source',
|
|
|
render: function ($el) {
|
|
|
drawMarkmap($el);
|
|
|
}
|
|
|
};
|
|
|
|
|
|
plugins.mathjax = {
|
|
|
name: 'mathjax',
|
|
|
attr: 'mathjax-source',
|
|
|
render: function renderMathjax ($el) {
|
|
|
var el = $el[0];
|
|
|
if (!el) { return; }
|
|
|
var code = el.getAttribute("mathjax-source");
|
|
|
var svg = Mathjax.tex2svg(code, {display: true});
|
|
|
if (!svg) { return; }
|
|
|
svg.innerHTML = svg.innerHTML.replace(/xlink:href/g, "href");
|
|
|
var wrapper = document.createElement('span');
|
|
|
wrapper.innerHTML = svg.innerHTML;
|
|
|
el.innerHTML = wrapper.outerHTML;
|
|
|
}
|
|
|
};
|
|
|
|
|
|
var applyCSS = function (el, css) {
|
|
|
var style = h('style');
|
|
|
style.appendChild(document.createTextNode(css));
|
|
|
el.innerText = '';
|
|
|
el.appendChild(style);
|
|
|
};
|
|
|
|
|
|
// trim non-functional text from less input so that
|
|
|
// the compiler is only triggered when there has been a functional change
|
|
|
var canonicalizeLess = function (source) {
|
|
|
return (source || '')
|
|
|
// leading and trailing spaces are irrelevant
|
|
|
.trim()
|
|
|
// line comments are easy to disregard
|
|
|
.replace(/\/\/[^\n]*/g, '')
|
|
|
// lines with nothing but spaces and tabs can be ignored
|
|
|
.replace(/^[ \t]*$/g, '')
|
|
|
// consecutive newlines make no difference
|
|
|
.replace(/\n+/g, '');
|
|
|
};
|
|
|
|
|
|
var rendered_less = {};
|
|
|
var getRenderedLess = (function () {
|
|
|
var timeouts = {};
|
|
|
return function (src) {
|
|
|
if (!rendered_less[src]) { return; }
|
|
|
if (timeouts[src]) {
|
|
|
clearTimeout(timeouts[src]);
|
|
|
}
|
|
|
// avoid memory leaks by deleting cached content
|
|
|
// 15s after it was last accessed
|
|
|
timeouts[src] = setTimeout(function () {
|
|
|
delete rendered_less[src];
|
|
|
delete timeouts[src];
|
|
|
}, 15000);
|
|
|
return rendered_less[src];
|
|
|
};
|
|
|
}());
|
|
|
|
|
|
plugins.less = {
|
|
|
name: 'less',
|
|
|
attr: 'less-src',
|
|
|
render: function renderLess ($el, opt) {
|
|
|
var src = canonicalizeLess($el.text());
|
|
|
if (!src) { return; }
|
|
|
var el = $el[0];
|
|
|
var rendered = getRenderedLess(src);
|
|
|
if (rendered) { return void applyCSS(el, rendered); }
|
|
|
|
|
|
var scope = opt.scope.attr('id') || 'cp-app-code-preview-content';
|
|
|
var scoped_src = '#' + scope + ' { ' + src + '}';
|
|
|
//console.error("RENDERING LESS");
|
|
|
Less.render(scoped_src, {}, function (err, result) {
|
|
|
// the console is the only feedback for users to know that they did something wrong
|
|
|
// but less rendering isn't intended so much as a feature but a useful tool to avoid
|
|
|
// leaking styles from the preview into the rest of the DOM. This is an improvement.
|
|
|
if (err) {
|
|
|
// we assume the compiler is deterministic. Something that returns an error once
|
|
|
// will do it again, so avoid successive calls by caching a truthy
|
|
|
// but non-functional string to block them.
|
|
|
rendered_less[src] = ' ';
|
|
|
return void console.error(err);
|
|
|
}
|
|
|
var css = rendered_less[src] = result.css;
|
|
|
applyCSS(el, css);
|
|
|
});
|
|
|
},
|
|
|
};
|
|
|
|
|
|
var getAvailableCachedElement = function ($content, cache, src) {
|
|
|
var cached = cache[src];
|
|
|
if (!Array.isArray(cached)) { return; }
|
|
|
var root = $content[0];
|
|
|
var l = cached.length;
|
|
|
for (var i = 0; i < l; i++) {
|
|
|
if (!root.contains(cached[i])) {
|
|
|
return cached[i];
|
|
|
}
|
|
|
}
|
|
|
};
|
|
|
|
|
|
var cacheRenderedElement = function (cache, src, el) {
|
|
|
if (Array.isArray(cache[src])) {
|
|
|
cache[src].push(el);
|
|
|
} else {
|
|
|
cache[src] = [ el ];
|
|
|
}
|
|
|
};
|
|
|
|
|
|
// remove elements from the cache that are not embedded in the dom
|
|
|
var clearUnusedCacheEntries = function ($content, plugins) {
|
|
|
var root = $content[0];
|
|
|
Object.keys(plugins).forEach(function (name) {
|
|
|
var plugin = plugins[name];
|
|
|
var cache = plugin.cache;
|
|
|
Object.keys(cache).forEach(function (key) {
|
|
|
var list = cache[key];
|
|
|
if (!Array.isArray(list)) { return; }
|
|
|
cache[key] = list.filter(function (el) {
|
|
|
return root.contains(el);
|
|
|
});
|
|
|
});
|
|
|
});
|
|
|
};
|
|
|
|
|
|
DiffMd.apply = function (newHtml, $content, common) {
|
|
|
if (!sfCommon) { sfCommon = common; }
|
|
|
|
|
|
var contextMenu = common.importMediaTagMenu();
|
|
|
var id = $content.attr('id');
|
|
|
if (!id) { throw new Error("The element must have a valid id"); }
|
|
|
var pattern = /(<media-tag src="([^"]*)" data-crypto-key="([^"]*)">)<\/media-tag>/g;
|
|
|
|
|
|
var unsafe_newHtmlFixed = newHtml.replace(pattern, function (all, tag, src) {
|
|
|
var mt = tag;
|
|
|
if (mediaMap[src]) { mt += mediaMap[src]; }
|
|
|
return mt + '</media-tag>';
|
|
|
});
|
|
|
|
|
|
var newDomFixed = domFromHTML(unsafe_newHtmlFixed);
|
|
|
if (!newDomFixed || !newDomFixed.body) { return; }
|
|
|
var safe_newHtmlFixed = newDomFixed.body.outerHTML;
|
|
|
var $div = $('<div>', {id: id}).append(safe_newHtmlFixed);
|
|
|
|
|
|
var Dom = domFromHTML($('<div>').append($div).html());
|
|
|
$content[0].normalize();
|
|
|
|
|
|
Object.keys(plugins).forEach(function (id) {
|
|
|
plugins[id].source = [];
|
|
|
plugins[id].cache = {};
|
|
|
});
|
|
|
|
|
|
var canonicalizeMermaidSource = function (src) {
|
|
|
// ignore changes to empty lines, since that won't affect
|
|
|
// since it will have no effect on the rendered charts
|
|
|
return src.replace(/\n[ \t]*\n*[ \t]*\n/g, '\n');
|
|
|
};
|
|
|
|
|
|
// iterate over the unrendered mermaid and markmap inputs,
|
|
|
// caching their source as you go
|
|
|
$(newDomFixed).find('pre[data-plugin]').each(function (index, el) {
|
|
|
if (el.childNodes.length === 1 && el.childNodes[0].nodeType === 3) {
|
|
|
var type = el.getAttribute('data-plugin');
|
|
|
var plugin = plugins[type];
|
|
|
if (!plugin) { return; }
|
|
|
var src = canonicalizeMermaidSource(el.childNodes[0].wholeText);
|
|
|
el.setAttribute(plugin.attr, src);
|
|
|
plugin.source[index] = src;
|
|
|
}
|
|
|
});
|
|
|
|
|
|
// remember the previous scroll position
|
|
|
var $parent = $content.parent();
|
|
|
var scrollTop = $parent.scrollTop();
|
|
|
// iterate over rendered mermaid charts
|
|
|
$content.find('pre[data-plugin]:not([processed="true"])').each(function (index, el) {
|
|
|
var type = el.getAttribute('data-plugin');
|
|
|
var plugin = plugins[type];
|
|
|
if (!plugin) { return; }
|
|
|
|
|
|
// retrieve the attached source code which it was drawn
|
|
|
var src = el.getAttribute(plugin.attr);
|
|
|
|
|
|
/* The new source might have syntax errors that will prevent rendering.
|
|
|
It might be preferable to keep the existing state instead of removing it
|
|
|
if you don't have something better to display. Ideally we should display
|
|
|
the cause of the syntax error so that the user knows what to correct. */
|
|
|
//if (plugin.name === "mermaid" && !Mermaid.parse(src)) { } // TODO
|
|
|
|
|
|
// check if that source exists in the set of charts which are about to be rendered
|
|
|
if (plugin.source.indexOf(src) === -1) {
|
|
|
// if it's not, then you can remove it
|
|
|
if (el.parentNode && el.parentNode.children.length) {
|
|
|
el.parentNode.removeChild(el);
|
|
|
}
|
|
|
} else if (el.childNodes.length === 1 && el.childNodes[0].nodeType !== 3) {
|
|
|
// otherwise, confirm that the content of the rendered chart is not a text node
|
|
|
// and keep a copy of it
|
|
|
cacheRenderedElement(plugin.cache, src, el.childNodes[0]);
|
|
|
}
|
|
|
});
|
|
|
|
|
|
var oldDom = domFromHTML($content[0].outerHTML);
|
|
|
|
|
|
var MutationObserver = window.MutationObserver;
|
|
|
var onPreview = function ($mt) {
|
|
|
return function () {
|
|
|
if (window.event.ctrlKey) { return; }
|
|
|
var mts = [];
|
|
|
// Get all previewable elements from the doc
|
|
|
$content.find('media-tag, pre[data-plugin]').each(function (i, el) {
|
|
|
if (el.nodeName.toLowerCase() === "pre") {
|
|
|
var clone = el.cloneNode();
|
|
|
var plugin = plugins[el.getAttribute('data-plugin')];
|
|
|
if (!plugin) { return; }
|
|
|
|
|
|
return void mts.push({
|
|
|
svg: clone,
|
|
|
render: function () {
|
|
|
var $el = $(clone);
|
|
|
$el.text(clone.getAttribute(plugin.attr));
|
|
|
$el.attr('data-processed', '');
|
|
|
plugin.render($el);
|
|
|
}
|
|
|
});
|
|
|
}
|
|
|
var $el = $(el);
|
|
|
mts.push({
|
|
|
src: $el.attr('src'),
|
|
|
key: $el.attr('data-crypto-key')
|
|
|
});
|
|
|
});
|
|
|
|
|
|
// Find initial position
|
|
|
|
|
|
// If the element is supported by one of our plugin types
|
|
|
// (mermaid, mathjax, or markmap) get the corresponding attribute
|
|
|
var isSvg = $mt.is('pre[data-plugin]');
|
|
|
var plugin = isSvg && plugins[$mt.attr('data-plugin')];
|
|
|
|
|
|
// Get initial idx
|
|
|
var idx = -1;
|
|
|
mts.some(function (obj, i) {
|
|
|
if (isSvg && $mt.attr(plugin.attr) === $(obj.svg).attr(plugin.attr)) {
|
|
|
idx = i;
|
|
|
return true;
|
|
|
}
|
|
|
if (!isSvg && obj.src === $mt.attr('src')) {
|
|
|
idx = i;
|
|
|
return true;
|
|
|
}
|
|
|
});
|
|
|
// Not found, re-render
|
|
|
if (idx === -1) {
|
|
|
if (isSvg && $mt.attr(plugin.attr)) {
|
|
|
var clone = $mt[0].cloneNode();
|
|
|
mts.unshift({
|
|
|
svg: clone,
|
|
|
render: function () {
|
|
|
var $el = $(clone);
|
|
|
$el.text(clone.getAttribute(plugin.attr));
|
|
|
$el.attr('data-processed', '');
|
|
|
plugin.render($el);
|
|
|
}
|
|
|
});
|
|
|
} else {
|
|
|
mts.unshift({
|
|
|
src: $mt.attr('src'),
|
|
|
key: $mt.attr('data-crypto-key')
|
|
|
});
|
|
|
}
|
|
|
idx = 0;
|
|
|
}
|
|
|
|
|
|
setTimeout(function () {
|
|
|
common.getMediaTagPreview(mts, idx);
|
|
|
});
|
|
|
};
|
|
|
};
|
|
|
|
|
|
var patch = makeDiff(oldDom, Dom, id);
|
|
|
if (typeof(patch) === 'string') {
|
|
|
throw new Error(patch);
|
|
|
} else {
|
|
|
try {
|
|
|
DD.apply($content[0], patch);
|
|
|
} catch (err) {
|
|
|
console.error(err);
|
|
|
}
|
|
|
var $mts = $content.find('media-tag');
|
|
|
$mts.each(function (i, el) {
|
|
|
var $mt = $(el).contextmenu(function (e) {
|
|
|
e.preventDefault();
|
|
|
$(contextMenu.menu).data('mediatag', $(el));
|
|
|
$(contextMenu.menu).find('li').show();
|
|
|
contextMenu.show(e);
|
|
|
});
|
|
|
if ($mt.children().length && $mt[0]._mediaObject) {
|
|
|
$mt.off('click dblclick preview');
|
|
|
$mt.on('preview', onPreview($mt));
|
|
|
if ($mt.find('img').length) {
|
|
|
$mt.on('click dblclick', function () {
|
|
|
$mt.trigger('preview');
|
|
|
});
|
|
|
}
|
|
|
return;
|
|
|
}
|
|
|
var mediaObject = MediaTag(el);
|
|
|
var observer = new MutationObserver(function(mutations) {
|
|
|
mutations.forEach(function(mutation) {
|
|
|
if (mutation.type === 'childList') {
|
|
|
var list_values = slice(el.children)
|
|
|
.map(function (el) { return el.outerHTML; })
|
|
|
.join('');
|
|
|
mediaMap[el.getAttribute('src')] = list_values;
|
|
|
if (mediaObject.complete) { observer.disconnect(); }
|
|
|
}
|
|
|
});
|
|
|
$mt.off('click dblclick preview');
|
|
|
$mt.on('preview', onPreview($mt));
|
|
|
if ($mt.find('img').length) {
|
|
|
$mt.on('click dblclick', function () {
|
|
|
$mt.trigger('preview');
|
|
|
});
|
|
|
}
|
|
|
});
|
|
|
observer.observe(el, {
|
|
|
attributes: false,
|
|
|
subtree: true,
|
|
|
childList: true,
|
|
|
characterData: false
|
|
|
});
|
|
|
});
|
|
|
// Fix Table of contents links
|
|
|
$content.find('a.cp-md-toc-link').off('click').click(function (e) {
|
|
|
e.preventDefault();
|
|
|
e.stopPropagation();
|
|
|
var $a = $(this);
|
|
|
if (!$a.attr('data-href')) { return; }
|
|
|
var target = document.getElementById($a.attr('data-href'));
|
|
|
if (target) { target.scrollIntoView(); }
|
|
|
});
|
|
|
|
|
|
// replace remote images with links to those images
|
|
|
$content.find('div.cp-inline-img-warning').each(function (index, el) {
|
|
|
if (!el) { return; }
|
|
|
var link = el.querySelector('a.cp-remote-img');
|
|
|
if (!link) { return; }
|
|
|
link.onclick = function (ev) {
|
|
|
ev.preventDefault();
|
|
|
ev.stopPropagation();
|
|
|
common.openURL(link.href);
|
|
|
};
|
|
|
});
|
|
|
|
|
|
// transform style tags into pre tags with the same content
|
|
|
// to be handled by the less rendering plugin
|
|
|
$content.find('style').each(function (index, el) {
|
|
|
var parent = el.parentElement;
|
|
|
var pre = h('pre', {
|
|
|
'data-plugin': 'less',
|
|
|
'less-src': canonicalizeLess(el.innerText),
|
|
|
style: 'display: none',
|
|
|
}, el.innerText);
|
|
|
parent.replaceChild(pre, el);
|
|
|
});
|
|
|
|
|
|
// loop over plugin elements in the rendered content
|
|
|
$content.find('pre[data-plugin]').each(function (index, el) {
|
|
|
var type = el.getAttribute('data-plugin');
|
|
|
var plugin = plugins[type];
|
|
|
|
|
|
if (!plugin) { return; }
|
|
|
var $el = $(el);
|
|
|
$el.off('contextmenu').on('contextmenu', function (e) {
|
|
|
e.preventDefault();
|
|
|
$(contextMenu.menu).data('mediatag', $el);
|
|
|
$(contextMenu.menu).find('li:not(.cp-svg)').hide();
|
|
|
contextMenu.show(e);
|
|
|
});
|
|
|
$el.off('dblclick click preview');
|
|
|
$el.on('preview', onPreview($el));
|
|
|
$el.on('dblclick click', function () {
|
|
|
$el.trigger('preview');
|
|
|
});
|
|
|
|
|
|
// since you've simply drawn the content that was supplied via markdown
|
|
|
// you can assume that the index of your rendered charts matches that
|
|
|
// of those in the markdown source.
|
|
|
var src = plugin.source[index];
|
|
|
if (src) {
|
|
|
el.setAttribute(plugin.attr, src);
|
|
|
}
|
|
|
var cached = getAvailableCachedElement($content, plugin.cache, src);
|
|
|
|
|
|
// check if you had cached a pre-rendered instance of the supplied source
|
|
|
if (typeof(cached) !== 'object') {
|
|
|
try {
|
|
|
plugin.render($el, {
|
|
|
scope: $content,
|
|
|
});
|
|
|
} catch (e) { console.error(e); }
|
|
|
return;
|
|
|
}
|
|
|
|
|
|
// if there's a cached rendering, empty out the contained source code
|
|
|
// which would otherwise be drawn again.
|
|
|
// apparently this is the fastest way to empty out an element
|
|
|
while (el.firstChild) { el.removeChild(el.firstChild); } //el.innerHTML = '';
|
|
|
// insert the cached graph
|
|
|
el.appendChild(cached);
|
|
|
// and set a flag indicating that this graph need not be reprocessed
|
|
|
el.setAttribute('data-processed', true);
|
|
|
});
|
|
|
}
|
|
|
clearUnusedCacheEntries($content, plugins);
|
|
|
|
|
|
// recover the previous scroll position to avoid jank
|
|
|
$parent.scrollTop(scrollTop);
|
|
|
};
|
|
|
|
|
|
return DiffMd;
|
|
|
});
|
|
|
|