BookStack/resources/js/components/wysiwyg-editor.js
Dan Brown 70be28d22c Updated tinymce code block handling to help prevent breaking history states
Only used an undo transaction on startup and added a small delay
to codeMirror parsing on SetContent's to help avoid
the rendering activities getting caught in undoManager states.
Seemed to improve things a lot in Firefox & chrome on my dev machine.

For #2602
2021-04-19 22:00:33 +01:00

738 lines
28 KiB
JavaScript

import Code from "../services/code";
import DrawIO from "../services/drawio";
import Clipboard from "../services/clipboard";
/**
* Handle pasting images from clipboard.
* @param {ClipboardEvent} event
* @param {WysiwygEditor} wysiwygComponent
* @param editor
*/
function editorPaste(event, editor, wysiwygComponent) {
const clipboard = new Clipboard(event.clipboardData || event.dataTransfer);
// Don't handle the event ourselves if no items exist of contains table-looking data
if (!clipboard.hasItems() || clipboard.containsTabularData()) {
return;
}
const images = clipboard.getImages();
for (const imageFile of images) {
const id = "image-" + Math.random().toString(16).slice(2);
const loadingImage = window.baseUrl('/loading.gif');
event.preventDefault();
setTimeout(() => {
editor.insertContent(`<p><img src="${loadingImage}" id="${id}"></p>`);
uploadImageFile(imageFile, wysiwygComponent).then(resp => {
const safeName = resp.name.replace(/"/g, '');
const newImageHtml = `<img src="${resp.thumbs.display}" alt="${safeName}" />`;
const newEl = editor.dom.create('a', {
target: '_blank',
href: resp.url,
}, newImageHtml);
editor.dom.replace(newEl, id);
}).catch(err => {
editor.dom.remove(id);
window.$events.emit('error', wysiwygComponent.imageUploadErrorText);
console.log(err);
});
}, 10);
}
}
/**
* Upload an image file to the server
* @param {File} file
* @param {WysiwygEditor} wysiwygComponent
*/
async function uploadImageFile(file, wysiwygComponent) {
if (file === null || file.type.indexOf('image') !== 0) {
throw new Error(`Not an image file`);
}
let ext = 'png';
if (file.name) {
let fileNameMatches = file.name.match(/\.(.+)$/);
if (fileNameMatches.length > 1) ext = fileNameMatches[1];
}
const remoteFilename = "image-" + Date.now() + "." + ext;
const formData = new FormData();
formData.append('file', file, remoteFilename);
formData.append('uploaded_to', wysiwygComponent.pageId);
const resp = await window.$http.post(window.baseUrl('/images/gallery'), formData);
return resp.data;
}
function registerEditorShortcuts(editor) {
// Headers
for (let i = 1; i < 5; i++) {
editor.shortcuts.add('meta+' + i, '', ['FormatBlock', false, 'h' + (i+1)]);
}
// Other block shortcuts
editor.shortcuts.add('meta+5', '', ['FormatBlock', false, 'p']);
editor.shortcuts.add('meta+d', '', ['FormatBlock', false, 'p']);
editor.shortcuts.add('meta+6', '', ['FormatBlock', false, 'blockquote']);
editor.shortcuts.add('meta+q', '', ['FormatBlock', false, 'blockquote']);
editor.shortcuts.add('meta+7', '', ['codeeditor', false, 'pre']);
editor.shortcuts.add('meta+e', '', ['codeeditor', false, 'pre']);
editor.shortcuts.add('meta+8', '', ['FormatBlock', false, 'code']);
editor.shortcuts.add('meta+shift+E', '', ['FormatBlock', false, 'code']);
// Save draft shortcut
editor.shortcuts.add('meta+S', '', () => {
window.$events.emit('editor-save-draft');
});
// Save page shortcut
editor.shortcuts.add('meta+13', '', () => {
window.$events.emit('editor-save-page');
});
// Loop through callout styles
editor.shortcuts.add('meta+9', '', function() {
const selectedNode = editor.selection.getNode();
const callout = selectedNode ? selectedNode.closest('.callout') : null;
const formats = ['info', 'success', 'warning', 'danger'];
const currentFormatIndex = formats.findIndex(format => callout && callout.classList.contains(format));
const newFormatIndex = (currentFormatIndex + 1) % formats.length;
const newFormat = formats[newFormatIndex];
editor.formatter.apply('callout' + newFormat);
});
}
/**
* Load custom HTML head content from the settings into the editor.
* @param editor
*/
function loadCustomHeadContent(editor) {
window.$http.get(window.baseUrl('/custom-head-content')).then(resp => {
if (!resp.data) return;
let head = editor.getDoc().querySelector('head');
head.innerHTML += resp.data;
});
}
/**
* Create and enable our custom code plugin
*/
function codePlugin() {
function elemIsCodeBlock(elem) {
return elem.className === 'CodeMirrorContainer';
}
function showPopup(editor) {
const selectedNode = editor.selection.getNode();
if (!elemIsCodeBlock(selectedNode)) {
const providedCode = editor.selection.getNode().textContent;
window.components.first('code-editor').open(providedCode, '', (code, lang) => {
const wrap = document.createElement('div');
wrap.innerHTML = `<pre><code class="language-${lang}"></code></pre>`;
wrap.querySelector('code').innerText = code;
editor.formatter.toggle('pre');
const node = editor.selection.getNode();
editor.dom.setHTML(node, wrap.querySelector('pre').innerHTML);
editor.fire('SetContent');
editor.focus()
});
return;
}
const lang = selectedNode.hasAttribute('data-lang') ? selectedNode.getAttribute('data-lang') : '';
const currentCode = selectedNode.querySelector('textarea').textContent;
window.components.first('code-editor').open(currentCode, lang, (code, lang) => {
const editorElem = selectedNode.querySelector('.CodeMirror');
const cmInstance = editorElem.CodeMirror;
if (cmInstance) {
Code.setContent(cmInstance, code);
Code.setMode(cmInstance, lang, code);
}
const textArea = selectedNode.querySelector('textarea');
if (textArea) textArea.textContent = code;
selectedNode.setAttribute('data-lang', lang);
editor.focus()
});
}
function codeMirrorContainerToPre(codeMirrorContainer) {
const textArea = codeMirrorContainer.querySelector('textarea');
const code = textArea.textContent;
const lang = codeMirrorContainer.getAttribute('data-lang');
codeMirrorContainer.removeAttribute('contentEditable');
const pre = document.createElement('pre');
const codeElem = document.createElement('code');
codeElem.classList.add(`language-${lang}`);
codeElem.textContent = code;
pre.appendChild(codeElem);
codeMirrorContainer.parentElement.replaceChild(pre, codeMirrorContainer);
}
window.tinymce.PluginManager.add('codeeditor', function(editor, url) {
const $ = editor.$;
editor.addButton('codeeditor', {
text: 'Code block',
icon: false,
cmd: 'codeeditor'
});
editor.addCommand('codeeditor', () => {
showPopup(editor);
});
// Convert
editor.on('PreProcess', function (e) {
$('div.CodeMirrorContainer', e.node).each((index, elem) => {
codeMirrorContainerToPre(elem);
});
});
editor.on('dblclick', event => {
let selectedNode = editor.selection.getNode();
if (!elemIsCodeBlock(selectedNode)) return;
showPopup(editor);
});
function parseCodeMirrorInstances() {
// Recover broken codemirror instances
$('.CodeMirrorContainer').filter((index ,elem) => {
return typeof elem.querySelector('.CodeMirror').CodeMirror === 'undefined';
}).each((index, elem) => {
codeMirrorContainerToPre(elem);
});
const codeSamples = $('body > pre').filter((index, elem) => {
return elem.contentEditable !== "false";
});
codeSamples.each((index, elem) => {
Code.wysiwygView(elem);
});
}
editor.on('init', function() {
// Parse code mirror instances on init, but delay a little so this runs after
// initial styles are fetched into the editor.
editor.undoManager.transact(function () {
parseCodeMirrorInstances();
});
// Parsed code mirror blocks when content is set but wait before setting this handler
// to avoid any init 'SetContent' events.
setTimeout(() => {
editor.on('SetContent', () => {
setTimeout(parseCodeMirrorInstances, 100);
});
}, 200);
});
});
}
function drawIoPlugin(drawioUrl, isDarkMode, pageId, wysiwygComponent) {
let pageEditor = null;
let currentNode = null;
function isDrawing(node) {
return node.hasAttribute('drawio-diagram');
}
function showDrawingManager(mceEditor, selectedNode = null) {
pageEditor = mceEditor;
currentNode = selectedNode;
// Show image manager
window.ImageManager.show(function (image) {
if (selectedNode) {
let imgElem = selectedNode.querySelector('img');
pageEditor.dom.setAttrib(imgElem, 'src', image.url);
pageEditor.dom.setAttrib(selectedNode, 'drawio-diagram', image.id);
} else {
let imgHTML = `<div drawio-diagram="${image.id}" contenteditable="false"><img src="${image.url}"></div>`;
pageEditor.insertContent(imgHTML);
}
}, 'drawio');
}
function showDrawingEditor(mceEditor, selectedNode = null) {
pageEditor = mceEditor;
currentNode = selectedNode;
DrawIO.show(drawioUrl, drawingInit, updateContent);
}
async function updateContent(pngData) {
const id = "image-" + Math.random().toString(16).slice(2);
const loadingImage = window.baseUrl('/loading.gif');
// Handle updating an existing image
if (currentNode) {
DrawIO.close();
let imgElem = currentNode.querySelector('img');
try {
const img = await DrawIO.upload(pngData, pageId);
pageEditor.dom.setAttrib(imgElem, 'src', img.url);
pageEditor.dom.setAttrib(currentNode, 'drawio-diagram', img.id);
} catch (err) {
window.$events.emit('error', wysiwygComponent.imageUploadErrorText);
console.log(err);
}
return;
}
setTimeout(async () => {
pageEditor.insertContent(`<div drawio-diagram contenteditable="false"><img src="${loadingImage}" id="${id}"></div>`);
DrawIO.close();
try {
const img = await DrawIO.upload(pngData, pageId);
pageEditor.dom.setAttrib(id, 'src', img.url);
pageEditor.dom.get(id).parentNode.setAttribute('drawio-diagram', img.id);
} catch (err) {
pageEditor.dom.remove(id);
window.$events.emit('error', wysiwygComponent.imageUploadErrorText);
console.log(err);
}
}, 5);
}
function drawingInit() {
if (!currentNode) {
return Promise.resolve('');
}
let drawingId = currentNode.getAttribute('drawio-diagram');
return DrawIO.load(drawingId);
}
window.tinymce.PluginManager.add('drawio', function(editor, url) {
editor.addCommand('drawio', () => {
const selectedNode = editor.selection.getNode();
showDrawingEditor(editor, isDrawing(selectedNode) ? selectedNode : null);
});
editor.addButton('drawio', {
type: 'splitbutton',
tooltip: 'Drawing',
image: `data:image/svg+xml;base64,${btoa(`<svg viewBox="0 0 24 24" fill="${isDarkMode ? '#BBB' : '#000000'}" xmlns="http://www.w3.org/2000/svg">
<path d="M23 7V1h-6v2H7V1H1v6h2v10H1v6h6v-2h10v2h6v-6h-2V7h2zM3 3h2v2H3V3zm2 18H3v-2h2v2zm12-2H7v-2H5V7h2V5h10v2h2v10h-2v2zm4 2h-2v-2h2v2zM19 5V3h2v2h-2zm-5.27 9h-3.49l-.73 2H7.89l3.4-9h1.4l3.41 9h-1.63l-.74-2zm-3.04-1.26h2.61L12 8.91l-1.31 3.83z"/>
<path d="M0 0h24v24H0z" fill="none"/>
</svg>`)}`,
cmd: 'drawio',
menu: [
{
text: 'Drawing Manager',
onclick() {
let selectedNode = editor.selection.getNode();
showDrawingManager(editor, isDrawing(selectedNode) ? selectedNode : null);
}
}
]
});
editor.on('dblclick', event => {
let selectedNode = editor.selection.getNode();
if (!isDrawing(selectedNode)) return;
showDrawingEditor(editor, selectedNode);
});
editor.on('SetContent', function () {
const drawings = editor.$('body > div[drawio-diagram]');
if (!drawings.length) return;
editor.undoManager.transact(function () {
drawings.each((index, elem) => {
elem.setAttribute('contenteditable', 'false');
});
});
});
});
}
function customHrPlugin() {
window.tinymce.PluginManager.add('customhr', function (editor) {
editor.addCommand('InsertHorizontalRule', function () {
let hrElem = document.createElement('hr');
let cNode = editor.selection.getNode();
let parentNode = cNode.parentNode;
parentNode.insertBefore(hrElem, cNode);
});
editor.addButton('hr', {
icon: 'hr',
tooltip: 'Horizontal line',
cmd: 'InsertHorizontalRule'
});
editor.addMenuItem('hr', {
icon: 'hr',
text: 'Horizontal line',
cmd: 'InsertHorizontalRule',
context: 'insert'
});
});
}
function listenForBookStackEditorEvents(editor) {
// Replace editor content
window.$events.listen('editor::replace', ({html}) => {
editor.setContent(html);
});
// Append editor content
window.$events.listen('editor::append', ({html}) => {
const content = editor.getContent() + html;
editor.setContent(content);
});
// Prepend editor content
window.$events.listen('editor::prepend', ({html}) => {
const content = html + editor.getContent();
editor.setContent(content);
});
// Insert editor content at the current location
window.$events.listen('editor::insert', ({html}) => {
editor.insertContent(html);
});
// Focus on the editor
window.$events.listen('editor::focus', () => {
editor.focus();
});
}
class WysiwygEditor {
setup() {
this.elem = this.$el;
this.pageId = this.$opts.pageId;
this.textDirection = this.$opts.textDirection;
this.imageUploadErrorText = this.$opts.imageUploadErrorText;
this.isDarkMode = document.documentElement.classList.contains('dark-mode');
this.plugins = "image imagetools table textcolor paste link autolink fullscreen code customhr autosave lists codeeditor media";
this.loadPlugins();
this.tinyMceConfig = this.getTinyMceConfig();
window.$events.emitPublic(this.elem, 'editor-tinymce::pre-init', {config: this.tinyMceConfig});
window.tinymce.init(this.tinyMceConfig);
}
loadPlugins() {
codePlugin();
customHrPlugin();
const drawioUrlElem = document.querySelector('[drawio-url]');
if (drawioUrlElem) {
const url = drawioUrlElem.getAttribute('drawio-url');
drawIoPlugin(url, this.isDarkMode, this.pageId, this);
this.plugins += ' drawio';
}
if (this.textDirection === 'rtl') {
this.plugins += ' directionality'
}
}
getToolBar() {
const textDirPlugins = this.textDirection === 'rtl' ? 'ltr rtl' : '';
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`
}
getTinyMceConfig() {
const context = this;
return {
selector: '#html-editor',
content_css: [
window.baseUrl('/dist/styles.css'),
],
branding: false,
skin: this.isDarkMode ? 'dark' : 'lightgray',
body_class: 'page-content',
browser_spellcheck: true,
relative_urls: false,
directionality : this.textDirection,
remove_script_host: false,
document_base_url: window.baseUrl('/'),
end_container_on_empty_block: true,
statusbar: false,
menubar: false,
paste_data_images: false,
extended_valid_elements: 'pre[*],svg[*],div[drawio-diagram]',
automatic_uploads: false,
valid_children: "-div[p|h1|h2|h3|h4|h5|h6|blockquote],+div[pre],+div[img]",
plugins: this.plugins,
imagetools_toolbar: 'imageoptions',
toolbar: this.getToolBar(),
content_style: `html, body, html.dark-mode {background: ${this.isDarkMode ? '#222' : '#fff'};} body {padding-left: 15px !important; padding-right: 15px !important; margin:0!important; margin-left:auto!important;margin-right:auto!important;}`,
style_formats: [
{title: "Header Large", format: "h2"},
{title: "Header Medium", format: "h3"},
{title: "Header Small", format: "h4"},
{title: "Header Tiny", format: "h5"},
{title: "Paragraph", format: "p", exact: true, classes: ''},
{title: "Blockquote", format: "blockquote"},
{title: "Code Block", icon: "code", cmd: 'codeeditor', format: 'codeeditor'},
{title: "Inline Code", icon: "code", inline: "code"},
{title: "Callouts", items: [
{title: "Info", format: 'calloutinfo'},
{title: "Success", format: 'calloutsuccess'},
{title: "Warning", format: 'calloutwarning'},
{title: "Danger", format: 'calloutdanger'}
]},
],
style_formats_merge: false,
media_alt_source: false,
media_poster: false,
formats: {
codeeditor: {selector: 'p,h1,h2,h3,h4,h5,h6,td,th,div'},
alignleft: {selector: 'p,h1,h2,h3,h4,h5,h6,td,th,div,ul,ol,li,table,img', classes: 'align-left'},
aligncenter: {selector: 'p,h1,h2,h3,h4,h5,h6,td,th,div,ul,ol,li,table,img', classes: 'align-center'},
alignright: {selector: 'p,h1,h2,h3,h4,h5,h6,td,th,div,ul,ol,li,table,img', classes: 'align-right'},
calloutsuccess: {block: 'p', exact: true, attributes: {class: 'callout success'}},
calloutinfo: {block: 'p', exact: true, attributes: {class: 'callout info'}},
calloutwarning: {block: 'p', exact: true, attributes: {class: 'callout warning'}},
calloutdanger: {block: 'p', exact: true, attributes: {class: 'callout danger'}}
},
file_browser_callback: function (field_name, url, type, win) {
if (type === 'file') {
window.EntitySelectorPopup.show(function(entity) {
const originalField = win.document.getElementById(field_name);
originalField.value = entity.link;
const mceForm = originalField.closest('.mce-form');
const inputs = mceForm.querySelectorAll('input');
// Set text to display if not empty
if (!inputs[1].value) {
inputs[1].value = entity.name;
}
// Set title field
inputs[2].value = entity.name;
});
}
if (type === 'image') {
// Show image manager
window.ImageManager.show(function (image) {
// Set popover link input to image url then fire change event
// to ensure the new value sticks
win.document.getElementById(field_name).value = image.url;
if ("createEvent" in document) {
let evt = document.createEvent("HTMLEvents");
evt.initEvent("change", false, true);
win.document.getElementById(field_name).dispatchEvent(evt);
} else {
win.document.getElementById(field_name).fireEvent("onchange");
}
// Replace the actively selected content with the linked image
let html = `<a href="${image.url}" target="_blank">`;
html += `<img src="${image.thumbs.display}" alt="${image.name}">`;
html += '</a>';
win.tinyMCE.activeEditor.execCommand('mceInsertContent', false, html);
}, 'gallery');
}
},
paste_preprocess: function (plugin, args) {
let content = args.content;
if (content.indexOf('<img src="file://') !== -1) {
args.content = '';
}
},
init_instance_callback: function(editor) {
loadCustomHeadContent(editor);
},
setup: function (editor) {
editor.on('ExecCommand change input NodeChange ObjectResized', editorChange);
editor.on('init', () => {
editorChange();
// Scroll to the content if needed.
const queryParams = (new URL(window.location)).searchParams;
const scrollId = queryParams.get('content-id');
if (scrollId) {
scrollToText(scrollId);
}
// Override for touch events to allow scroll on mobile
const container = editor.getContainer();
const toolbarButtons = container.querySelectorAll('.mce-btn');
for (let button of toolbarButtons) {
button.addEventListener('touchstart', event => {
event.stopPropagation();
});
}
window.editor = editor;
});
function editorChange() {
const content = editor.getContent();
if (context.isDarkMode) {
editor.contentDocument.documentElement.classList.add('dark-mode');
}
window.$events.emit('editor-html-change', content);
}
function scrollToText(scrollId) {
const element = editor.dom.get(encodeURIComponent(scrollId).replace(/!/g, '%21'));
if (!element) {
return;
}
// scroll the element into the view and put the cursor at the end.
element.scrollIntoView();
editor.selection.select(element, true);
editor.selection.collapse(false);
editor.focus();
}
listenForBookStackEditorEvents(editor);
// TODO - Update to standardise across both editors
// Use events within listenForBookStackEditorEvents instead (Different event signature)
window.$events.listen('editor-html-update', html => {
editor.setContent(html);
editor.selection.select(editor.getBody(), true);
editor.selection.collapse(false);
editorChange(html);
});
registerEditorShortcuts(editor);
let wrap;
let draggedContentEditable;
function hasTextContent(node) {
return node && !!( node.textContent || node.innerText );
}
editor.on('dragstart', function () {
let node = editor.selection.getNode();
if (node.nodeName === 'IMG') {
wrap = editor.dom.getParent(node, '.mceTemp');
if (!wrap && node.parentNode.nodeName === 'A' && !hasTextContent(node.parentNode)) {
wrap = node.parentNode;
}
}
// Track dragged contenteditable blocks
if (node.hasAttribute('contenteditable') && node.getAttribute('contenteditable') === 'false') {
draggedContentEditable = node;
}
});
// Custom drop event handling
editor.on('drop', function (event) {
let dom = editor.dom,
rng = tinymce.dom.RangeUtils.getCaretRangeFromPoint(event.clientX, event.clientY, editor.getDoc());
// Template insertion
const templateId = event.dataTransfer && event.dataTransfer.getData('bookstack/template');
if (templateId) {
event.preventDefault();
window.$http.get(`/templates/${templateId}`).then(resp => {
editor.selection.setRng(rng);
editor.undoManager.transact(function () {
editor.execCommand('mceInsertContent', false, resp.data.html);
});
});
}
// Don't allow anything to be dropped in a captioned image.
if (dom.getParent(rng.startContainer, '.mceTemp')) {
event.preventDefault();
} else if (wrap) {
event.preventDefault();
editor.undoManager.transact(function () {
editor.selection.setRng(rng);
editor.selection.setNode(wrap);
dom.remove(wrap);
});
}
// Handle contenteditable section drop
if (!event.isDefaultPrevented() && draggedContentEditable) {
event.preventDefault();
editor.undoManager.transact(function () {
const selectedNode = editor.selection.getNode();
const range = editor.selection.getRng();
const selectedNodeRoot = selectedNode.closest('body > *');
if (range.startOffset > (range.startContainer.length / 2)) {
editor.$(selectedNodeRoot).after(draggedContentEditable);
} else {
editor.$(selectedNodeRoot).before(draggedContentEditable);
}
});
}
// Handle image insert
if (!event.isDefaultPrevented()) {
editorPaste(event, editor, context);
}
wrap = null;
});
// Custom Image picker button
editor.addButton('image-insert', {
title: 'My title',
icon: 'image',
tooltip: 'Insert an image',
onclick: function () {
window.ImageManager.show(function (image) {
let html = `<a href="${image.url}" target="_blank">`;
html += `<img src="${image.thumbs.display}" alt="${image.name}">`;
html += '</a>';
editor.execCommand('mceInsertContent', false, html);
}, 'gallery');
}
});
// Paste image-uploads
editor.on('paste', event => editorPaste(event, editor, context));
// Custom handler hook
window.$events.emitPublic(context.elem, 'editor-tinymce::setup', {editor});
}
};
}
}
export default WysiwygEditor;