]> BookStack Code Mirror - bookstack/blob - resources/assets/js/components/wysiwyg-editor.js
Merge branch 'master' into 2019-design
[bookstack] / resources / assets / js / components / wysiwyg-editor.js
1 import Code from "../services/code";
2 import DrawIO from "../services/drawio";
3
4 /**
5  * Handle pasting images from clipboard.
6  * @param {ClipboardEvent} event
7  * @param {WysiwygEditor} wysiwygComponent
8  * @param editor
9  */
10 function editorPaste(event, editor, wysiwygComponent) {
11     if (!event.clipboardData || !event.clipboardData.items) return;
12
13     for (let clipboardItem of event.clipboardData.items) {
14         if (clipboardItem.type.indexOf("image") === -1) continue;
15         event.preventDefault();
16
17         const id = "image-" + Math.random().toString(16).slice(2);
18         const loadingImage = window.baseUrl('/loading.gif');
19         const file = clipboardItem.getAsFile();
20
21         setTimeout(() => {
22             editor.insertContent(`<p><img src="${loadingImage}" id="${id}"></p>`);
23
24             uploadImageFile(file, wysiwygComponent).then(resp => {
25                 editor.dom.setAttrib(id, 'src', resp.thumbs.display);
26             }).catch(err => {
27                 editor.dom.remove(id);
28                 window.$events.emit('error', trans('errors.image_upload_error'));
29                 console.log(err);
30             });
31         }, 10);
32     }
33 }
34
35 /**
36  * Upload an image file to the server
37  * @param {File} file
38  * @param {WysiwygEditor} wysiwygComponent
39  */
40 async function uploadImageFile(file, wysiwygComponent) {
41     if (file === null || file.type.indexOf('image') !== 0) {
42         throw new Error(`Not an image file`);
43     }
44
45     let ext = 'png';
46     if (file.name) {
47         let fileNameMatches = file.name.match(/\.(.+)$/);
48         if (fileNameMatches.length > 1) ext = fileNameMatches[1];
49     }
50
51     const remoteFilename = "image-" + Date.now() + "." + ext;
52     const formData = new FormData();
53     formData.append('file', file, remoteFilename);
54     formData.append('uploaded_to', wysiwygComponent.pageId);
55
56     const resp = await window.$http.post(window.baseUrl('/images/gallery/upload'), formData);
57     return resp.data;
58 }
59
60 function registerEditorShortcuts(editor) {
61     // Headers
62     for (let i = 1; i < 5; i++) {
63         editor.shortcuts.add('meta+' + i, '', ['FormatBlock', false, 'h' + (i+1)]);
64     }
65
66     // Other block shortcuts
67     editor.shortcuts.add('meta+5', '', ['FormatBlock', false, 'p']);
68     editor.shortcuts.add('meta+d', '', ['FormatBlock', false, 'p']);
69     editor.shortcuts.add('meta+6', '', ['FormatBlock', false, 'blockquote']);
70     editor.shortcuts.add('meta+q', '', ['FormatBlock', false, 'blockquote']);
71     editor.shortcuts.add('meta+7', '', ['codeeditor', false, 'pre']);
72     editor.shortcuts.add('meta+e', '', ['codeeditor', false, 'pre']);
73     editor.shortcuts.add('meta+8', '', ['FormatBlock', false, 'code']);
74     editor.shortcuts.add('meta+shift+E', '', ['FormatBlock', false, 'code']);
75
76     // Save draft shortcut
77     editor.shortcuts.add('meta+S', '', () => {
78         window.$events.emit('editor-save-draft');
79     });
80
81     // Save page shortcut
82     editor.shortcuts.add('meta+13', '', () => {
83         window.$events.emit('editor-save-page');
84     });
85
86     // Loop through callout styles
87     editor.shortcuts.add('meta+9', '', function() {
88         let selectedNode = editor.selection.getNode();
89         let formats = ['info', 'success', 'warning', 'danger'];
90
91         if (!selectedNode || selectedNode.className.indexOf('callout') === -1) {
92             editor.formatter.apply('calloutinfo');
93             return;
94         }
95
96         for (let i = 0; i < formats.length; i++) {
97             if (selectedNode.className.indexOf(formats[i]) === -1) continue;
98             let newFormat = (i === formats.length -1) ? formats[0] : formats[i+1];
99             editor.formatter.apply('callout' + newFormat);
100             return;
101         }
102         editor.formatter.apply('p');
103     });
104
105 }
106
107 /**
108  * Load custom HTML head content from the settings into the editor.
109  * @param editor
110  */
111 function loadCustomHeadContent(editor) {
112     window.$http.get(window.baseUrl('/custom-head-content')).then(resp => {
113         if (!resp.data) return;
114         let head = editor.getDoc().querySelector('head');
115         head.innerHTML += resp.data;
116     });
117 }
118
119 /**
120  * Create and enable our custom code plugin
121  */
122 function codePlugin() {
123
124     function elemIsCodeBlock(elem) {
125         return elem.className === 'CodeMirrorContainer';
126     }
127
128     function showPopup(editor) {
129         let selectedNode = editor.selection.getNode();
130
131         if (!elemIsCodeBlock(selectedNode)) {
132             let providedCode = editor.selection.getNode().textContent;
133             window.vues['code-editor'].open(providedCode, '', (code, lang) => {
134                 let wrap = document.createElement('div');
135                 wrap.innerHTML = `<pre><code class="language-${lang}"></code></pre>`;
136                 wrap.querySelector('code').innerText = code;
137
138                 editor.formatter.toggle('pre');
139                 let node = editor.selection.getNode();
140                 editor.dom.setHTML(node, wrap.querySelector('pre').innerHTML);
141                 editor.fire('SetContent');
142             });
143             return;
144         }
145
146         let lang = selectedNode.hasAttribute('data-lang') ? selectedNode.getAttribute('data-lang') : '';
147         let currentCode = selectedNode.querySelector('textarea').textContent;
148
149         window.vues['code-editor'].open(currentCode, lang, (code, lang) => {
150             let editorElem = selectedNode.querySelector('.CodeMirror');
151             let cmInstance = editorElem.CodeMirror;
152             if (cmInstance) {
153                 Code.setContent(cmInstance, code);
154                 Code.setMode(cmInstance, lang);
155             }
156             let textArea = selectedNode.querySelector('textarea');
157             if (textArea) textArea.textContent = code;
158             selectedNode.setAttribute('data-lang', lang);
159         });
160     }
161
162     function codeMirrorContainerToPre($codeMirrorContainer) {
163         let textArea = $codeMirrorContainer[0].querySelector('textarea');
164         let code = textArea.textContent;
165         let lang = $codeMirrorContainer[0].getAttribute('data-lang');
166
167         $codeMirrorContainer.removeAttr('contentEditable');
168         let $pre = $('<pre></pre>');
169         $pre.append($('<code></code>').each((index, elem) => {
170             // Needs to be textContent since innerText produces BR:s
171             elem.textContent = code;
172         }).attr('class', `language-${lang}`));
173         $codeMirrorContainer.replaceWith($pre);
174     }
175
176     window.tinymce.PluginManager.add('codeeditor', function(editor, url) {
177
178         let $ = editor.$;
179
180         editor.addButton('codeeditor', {
181             text: 'Code block',
182             icon: false,
183             cmd: 'codeeditor'
184         });
185
186         editor.addCommand('codeeditor', () => {
187             showPopup(editor);
188         });
189
190         // Convert
191         editor.on('PreProcess', function (e) {
192             $('div.CodeMirrorContainer', e.node).
193             each((index, elem) => {
194                 let $elem = $(elem);
195                 codeMirrorContainerToPre($elem);
196             });
197         });
198
199         editor.on('dblclick', event => {
200             let selectedNode = editor.selection.getNode();
201             if (!elemIsCodeBlock(selectedNode)) return;
202             showPopup(editor);
203         });
204
205         editor.on('SetContent', function () {
206
207             // Recover broken codemirror instances
208             $('.CodeMirrorContainer').filter((index ,elem) => {
209                 return typeof elem.querySelector('.CodeMirror').CodeMirror === 'undefined';
210             }).each((index, elem) => {
211                 codeMirrorContainerToPre($(elem));
212             });
213
214             let codeSamples = $('body > pre').filter((index, elem) => {
215                 return elem.contentEditable !== "false";
216             });
217
218             if (!codeSamples.length) return;
219             editor.undoManager.transact(function () {
220                 codeSamples.each((index, elem) => {
221                     Code.wysiwygView(elem);
222                 });
223             });
224         });
225
226     });
227 }
228
229 function drawIoPlugin() {
230
231     let pageEditor = null;
232     let currentNode = null;
233
234     function isDrawing(node) {
235         return node.hasAttribute('drawio-diagram');
236     }
237
238     function showDrawingManager(mceEditor, selectedNode = null) {
239         pageEditor = mceEditor;
240         currentNode = selectedNode;
241         // Show image manager
242         window.ImageManager.show(function (image) {
243             if (selectedNode) {
244                 let imgElem = selectedNode.querySelector('img');
245                 pageEditor.dom.setAttrib(imgElem, 'src', image.url);
246                 pageEditor.dom.setAttrib(selectedNode, 'drawio-diagram', image.id);
247             } else {
248                 let imgHTML = `<div drawio-diagram="${image.id}" contenteditable="false"><img src="${image.url}"></div>`;
249                 pageEditor.insertContent(imgHTML);
250             }
251         }, 'drawio');
252     }
253
254     function showDrawingEditor(mceEditor, selectedNode = null) {
255         pageEditor = mceEditor;
256         currentNode = selectedNode;
257         DrawIO.show(drawingInit, updateContent);
258     }
259
260     function updateContent(pngData) {
261         let id = "image-" + Math.random().toString(16).slice(2);
262         let loadingImage = window.baseUrl('/loading.gif');
263         let data = {
264             image: pngData,
265             uploaded_to: Number(document.getElementById('page-editor').getAttribute('page-id'))
266         };
267
268         // Handle updating an existing image
269         if (currentNode) {
270             DrawIO.close();
271             let imgElem = currentNode.querySelector('img');
272             window.$http.post(window.baseUrl(`/images/drawing/upload`), data).then(resp => {
273                 pageEditor.dom.setAttrib(imgElem, 'src', resp.data.url);
274                 pageEditor.dom.setAttrib(currentNode, 'drawio-diagram', resp.data.id);
275             }).catch(err => {
276                 window.$events.emit('error', trans('errors.image_upload_error'));
277                 console.log(err);
278             });
279             return;
280         }
281
282         setTimeout(() => {
283             pageEditor.insertContent(`<div drawio-diagram contenteditable="false"><img src="${loadingImage}" id="${id}"></div>`);
284             DrawIO.close();
285             window.$http.post(window.baseUrl('/images/drawing/upload'), data).then(resp => {
286                 pageEditor.dom.setAttrib(id, 'src', resp.data.url);
287                 pageEditor.dom.get(id).parentNode.setAttribute('drawio-diagram', resp.data.id);
288             }).catch(err => {
289                 pageEditor.dom.remove(id);
290                 window.$events.emit('error', trans('errors.image_upload_error'));
291                 console.log(err);
292             });
293         }, 5);
294     }
295
296
297     function drawingInit() {
298         if (!currentNode) {
299             return Promise.resolve('');
300         }
301
302         let drawingId = currentNode.getAttribute('drawio-diagram');
303         return window.$http.get(window.baseUrl(`/images/base64/${drawingId}`)).then(resp => {
304             return `data:image/png;base64,${resp.data.content}`;
305         });
306     }
307
308     window.tinymce.PluginManager.add('drawio', function(editor, url) {
309
310         editor.addCommand('drawio', () => {
311             let selectedNode = editor.selection.getNode();
312             showDrawingEditor(editor, isDrawing(selectedNode) ? selectedNode : null);
313         });
314
315         editor.addButton('drawio', {
316             type: 'splitbutton',
317             tooltip: 'Drawing',
318             image: `data:image/svg+xml;base64,PHN2ZyB2aWV3Qm94PSIwIDAgMjQgMjQiIGZpbGw9IiMwMDAwMDAiICB4bWxucz0iaHR0cDovL3d3 dy53My5vcmcvMjAwMC9zdmciPgogICAgPHBhdGggZD0iTTIzIDdWMWgtNnYySDdWMUgxdjZoMnYx MEgxdjZoNnYtMmgxMHYyaDZ2LTZoLTJWN2gyek0zIDNoMnYySDNWM3ptMiAxOEgzdi0yaDJ2Mnpt MTItMkg3di0ySDVWN2gyVjVoMTB2MmgydjEwaC0ydjJ6bTQgMmgtMnYtMmgydjJ6TTE5IDVWM2gy djJoLTJ6bS01LjI3IDloLTMuNDlsLS43MyAySDcuODlsMy40LTloMS40bDMuNDEgOWgtMS42M2wt Ljc0LTJ6bS0zLjA0LTEuMjZoMi42MUwxMiA4LjkxbC0xLjMxIDMuODN6Ii8+CiAgICA8cGF0aCBk PSJNMCAwaDI0djI0SDB6IiBmaWxsPSJub25lIi8+Cjwvc3ZnPg==`,
319             cmd: 'drawio',
320             menu: [
321                 {
322                     text: 'Drawing Manager',
323                     onclick() {
324                         let selectedNode = editor.selection.getNode();
325                         showDrawingManager(editor, isDrawing(selectedNode) ? selectedNode : null);
326                     }
327                 }
328             ]
329         });
330
331         editor.on('dblclick', event => {
332             let selectedNode = editor.selection.getNode();
333             if (!isDrawing(selectedNode)) return;
334             showDrawingEditor(editor, selectedNode);
335         });
336
337         editor.on('SetContent', function () {
338             let drawings = editor.$('body > div[drawio-diagram]');
339             if (!drawings.length) return;
340
341             editor.undoManager.transact(function () {
342                 drawings.each((index, elem) => {
343                     elem.setAttribute('contenteditable', 'false');
344                 });
345             });
346         });
347
348     });
349 }
350
351 function customHrPlugin() {
352     window.tinymce.PluginManager.add('customhr', function (editor) {
353         editor.addCommand('InsertHorizontalRule', function () {
354             let hrElem = document.createElement('hr');
355             let cNode = editor.selection.getNode();
356             let parentNode = cNode.parentNode;
357             parentNode.insertBefore(hrElem, cNode);
358         });
359
360         editor.addButton('hr', {
361             icon: 'hr',
362             tooltip: 'Horizontal line',
363             cmd: 'InsertHorizontalRule'
364         });
365
366         editor.addMenuItem('hr', {
367             icon: 'hr',
368             text: 'Horizontal line',
369             cmd: 'InsertHorizontalRule',
370             context: 'insert'
371         });
372     });
373 }
374
375
376 class WysiwygEditor {
377
378     constructor(elem) {
379         this.elem = elem;
380
381         const pageEditor = document.getElementById('page-editor');
382         this.pageId = pageEditor.getAttribute('page-id');
383         this.textDirection = pageEditor.getAttribute('text-direction');
384
385         this.plugins = "image table textcolor paste link autolink fullscreen imagetools code customhr autosave lists codeeditor media";
386         this.loadPlugins();
387
388         this.tinyMceConfig = this.getTinyMceConfig();
389         window.tinymce.init(this.tinyMceConfig);
390     }
391
392     loadPlugins() {
393         codePlugin();
394         customHrPlugin();
395         if (document.querySelector('[drawio-enabled]').getAttribute('drawio-enabled') === 'true') {
396             drawIoPlugin();
397             this.plugins += ' drawio';
398         }
399         if (this.textDirection === 'rtl') {
400             this.plugins += ' directionality'
401         }
402     }
403
404     getToolBar() {
405         const textDirPlugins = this.textDirection === 'rtl' ? 'ltr rtl' : '';
406         return `undo redo | styleselect | bold italic underline strikethrough superscript subscript | forecolor backcolor | alignleft aligncenter alignright alignjustify | bullist numlist outdent indent | table image-insert link hr drawio media | removeformat code ${textDirPlugins} fullscreen`
407     }
408
409     getTinyMceConfig() {
410
411         const context = this;
412
413         return {
414             selector: '#html-editor',
415             content_css: [
416                 window.baseUrl('/dist/styles.css'),
417             ],
418             branding: false,
419             body_class: 'page-content',
420             browser_spellcheck: true,
421             relative_urls: false,
422             directionality : this.textDirection,
423             remove_script_host: false,
424             document_base_url: window.baseUrl('/'),
425             end_container_on_empty_block: true,
426             statusbar: false,
427             menubar: false,
428             paste_data_images: false,
429             extended_valid_elements: 'pre[*],svg[*],div[drawio-diagram]',
430             automatic_uploads: false,
431             valid_children: "-div[p|h1|h2|h3|h4|h5|h6|blockquote],+div[pre],+div[img]",
432             plugins: this.plugins,
433             imagetools_toolbar: 'imageoptions',
434             toolbar: this.getToolBar(),
435             content_style: "html, body {background: #FFF;} body {padding-left: 15px !important; padding-right: 15px !important; margin:0!important; margin-left:auto!important;margin-right:auto!important;}",
436             style_formats: [
437                 {title: "Header Large", format: "h2"},
438                 {title: "Header Medium", format: "h3"},
439                 {title: "Header Small", format: "h4"},
440                 {title: "Header Tiny", format: "h5"},
441                 {title: "Paragraph", format: "p", exact: true, classes: ''},
442                 {title: "Blockquote", format: "blockquote"},
443                 {title: "Code Block", icon: "code", cmd: 'codeeditor', format: 'codeeditor'},
444                 {title: "Inline Code", icon: "code", inline: "code"},
445                 {title: "Callouts", items: [
446                         {title: "Info", format: 'calloutinfo'},
447                         {title: "Success", format: 'calloutsuccess'},
448                         {title: "Warning", format: 'calloutwarning'},
449                         {title: "Danger", format: 'calloutdanger'}
450                     ]},
451             ],
452             style_formats_merge: false,
453             media_alt_source: false,
454             media_poster: false,
455             formats: {
456                 codeeditor: {selector: 'p,h1,h2,h3,h4,h5,h6,td,th,div'},
457                 alignleft: {selector: 'p,h1,h2,h3,h4,h5,h6,td,th,div,ul,ol,li,table,img', classes: 'align-left'},
458                 aligncenter: {selector: 'p,h1,h2,h3,h4,h5,h6,td,th,div,ul,ol,li,table,img', classes: 'align-center'},
459                 alignright: {selector: 'p,h1,h2,h3,h4,h5,h6,td,th,div,ul,ol,li,table,img', classes: 'align-right'},
460                 calloutsuccess: {block: 'p', exact: true, attributes: {class: 'callout success'}},
461                 calloutinfo: {block: 'p', exact: true, attributes: {class: 'callout info'}},
462                 calloutwarning: {block: 'p', exact: true, attributes: {class: 'callout warning'}},
463                 calloutdanger: {block: 'p', exact: true, attributes: {class: 'callout danger'}}
464             },
465             file_browser_callback: function (field_name, url, type, win) {
466
467                 if (type === 'file') {
468                     window.EntitySelectorPopup.show(function(entity) {
469                         let originalField = win.document.getElementById(field_name);
470                         originalField.value = entity.link;
471                         $(originalField).closest('.mce-form').find('input').eq(2).val(entity.name);
472                     });
473                 }
474
475                 if (type === 'image') {
476                     // Show image manager
477                     window.ImageManager.show(function (image) {
478
479                         // Set popover link input to image url then fire change event
480                         // to ensure the new value sticks
481                         win.document.getElementById(field_name).value = image.url;
482                         if ("createEvent" in document) {
483                             let evt = document.createEvent("HTMLEvents");
484                             evt.initEvent("change", false, true);
485                             win.document.getElementById(field_name).dispatchEvent(evt);
486                         } else {
487                             win.document.getElementById(field_name).fireEvent("onchange");
488                         }
489
490                         // Replace the actively selected content with the linked image
491                         let html = `<a href="${image.url}" target="_blank">`;
492                         html += `<img src="${image.thumbs.display}" alt="${image.name}">`;
493                         html += '</a>';
494                         win.tinyMCE.activeEditor.execCommand('mceInsertContent', false, html);
495                     }, 'gallery');
496                 }
497
498             },
499             paste_preprocess: function (plugin, args) {
500                 let content = args.content;
501                 if (content.indexOf('<img src="file://') !== -1) {
502                     args.content = '';
503                 }
504             },
505             init_instance_callback: function(editor) {
506                 loadCustomHeadContent(editor);
507             },
508             setup: function (editor) {
509
510                 editor.on('ExecCommand change input NodeChange ObjectResized', editorChange);
511
512                 editor.on('init', () => {
513                     editorChange();
514                     // Scroll to the content if needed.
515                     const queryParams = (new URL(window.location)).searchParams;
516                     const scrollId = queryParams.get('content-id');
517                     if (scrollId) {
518                         scrollToText(scrollId);
519                     }
520                 });
521
522                 function editorChange() {
523                     let content = editor.getContent();
524                     window.$events.emit('editor-html-change', content);
525                 }
526
527                 function scrollToText(scrollId) {
528                     const element = editor.dom.get(encodeURIComponent(scrollId).replace(/!/g, '%21'));
529                     if (!element) {
530                         return;
531                     }
532
533                     // scroll the element into the view and put the cursor at the end.
534                     element.scrollIntoView();
535                     editor.selection.select(element, true);
536                     editor.selection.collapse(false);
537                     editor.focus();
538                 }
539
540                 window.$events.listen('editor-html-update', html => {
541                     editor.setContent(html);
542                     editor.selection.select(editor.getBody(), true);
543                     editor.selection.collapse(false);
544                     editorChange(html);
545                 });
546
547                 registerEditorShortcuts(editor);
548
549                 let wrap;
550
551                 function hasTextContent(node) {
552                     return node && !!( node.textContent || node.innerText );
553                 }
554
555                 editor.on('dragstart', function () {
556                     let node = editor.selection.getNode();
557
558                     if (node.nodeName !== 'IMG') return;
559                     wrap = editor.dom.getParent(node, '.mceTemp');
560
561                     if (!wrap && node.parentNode.nodeName === 'A' && !hasTextContent(node.parentNode)) {
562                         wrap = node.parentNode;
563                     }
564                 });
565
566                 editor.on('drop', function (event) {
567                     let dom = editor.dom,
568                         rng = tinymce.dom.RangeUtils.getCaretRangeFromPoint(event.clientX, event.clientY, editor.getDoc());
569
570                     // Don't allow anything to be dropped in a captioned image.
571                     if (dom.getParent(rng.startContainer, '.mceTemp')) {
572                         event.preventDefault();
573                     } else if (wrap) {
574                         event.preventDefault();
575
576                         editor.undoManager.transact(function () {
577                             editor.selection.setRng(rng);
578                             editor.selection.setNode(wrap);
579                             dom.remove(wrap);
580                         });
581                     }
582
583                     wrap = null;
584                 });
585
586                 // Custom Image picker button
587                 editor.addButton('image-insert', {
588                     title: 'My title',
589                     icon: 'image',
590                     tooltip: 'Insert an image',
591                     onclick: function () {
592                         window.ImageManager.show(function (image) {
593                             let html = `<a href="${image.url}" target="_blank">`;
594                             html += `<img src="${image.thumbs.display}" alt="${image.name}">`;
595                             html += '</a>';
596                             editor.execCommand('mceInsertContent', false, html);
597                         }, 'gallery');
598                     }
599                 });
600
601                 // Paste image-uploads
602                 editor.on('paste', event => editorPaste(event, editor, context));
603             }
604         };
605     }
606
607 }
608
609 export default WysiwygEditor;