BookStack/resources/js/wysiwyg/plugin-codeeditor.js

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JavaScript
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function elemIsCodeBlock(elem) {
return elem.className === 'CodeMirrorContainer';
}
function showPopup(editor) {
const selectedNode = editor.selection.getNode();
if (!elemIsCodeBlock(selectedNode)) {
const providedCode = editor.selection.getContent({format: 'text'});
window.components.first('code-editor').open(providedCode, '', (code, lang) => {
const wrap = document.createElement('div');
wrap.innerHTML = `<pre><code class="language-${lang}"></code></pre>`;
wrap.querySelector('code').innerText = code;
editor.insertContent(wrap.innerHTML);
editor.focus();
});
return;
}
const lang = selectedNode.hasAttribute('data-lang') ? selectedNode.getAttribute('data-lang') : '';
const currentCode = selectedNode.querySelector('textarea').textContent;
window.components.first('code-editor').open(currentCode, lang, (code, lang) => {
const editorElem = selectedNode.querySelector('.CodeMirror');
const cmInstance = editorElem.CodeMirror;
if (cmInstance) {
window.importVersioned('code').then(Code => {
Code.setContent(cmInstance, code);
Code.setMode(cmInstance, lang, code);
});
}
const textArea = selectedNode.querySelector('textarea');
if (textArea) textArea.textContent = code;
selectedNode.setAttribute('data-lang', lang);
editor.focus()
});
}
function codeMirrorContainerToPre(codeMirrorContainer) {
const textArea = codeMirrorContainer.querySelector('textarea');
const code = textArea.textContent;
const lang = codeMirrorContainer.getAttribute('data-lang');
codeMirrorContainer.removeAttribute('contentEditable');
const pre = document.createElement('pre');
const codeElem = document.createElement('code');
codeElem.classList.add(`language-${lang}`);
codeElem.textContent = code;
pre.appendChild(codeElem);
codeMirrorContainer.parentElement.replaceChild(pre, codeMirrorContainer);
}
/**
* @param {Editor} editor
* @param {String} url
*/
function register(editor, url) {
const $ = editor.$;
editor.ui.registry.addIcon('codeblock', '<svg width="24" height="24"><path d="M4 3h16c.6 0 1 .4 1 1v16c0 .6-.4 1-1 1H4a1 1 0 0 1-1-1V4c0-.6.4-1 1-1Zm1 2v14h14V5Z"/><path d="M11.103 15.423c.277.277.277.738 0 .922a.692.692 0 0 1-1.106 0l-4.057-3.78a.738.738 0 0 1 0-1.107l4.057-3.872c.276-.277.83-.277 1.106 0a.724.724 0 0 1 0 1.014L7.6 12.012ZM12.897 8.577c-.245-.312-.2-.675.08-.955.28-.281.727-.27 1.027.033l4.057 3.78a.738.738 0 0 1 0 1.107l-4.057 3.872c-.277.277-.83.277-1.107 0a.724.724 0 0 1 0-1.014l3.504-3.412z"/></svg>')
editor.ui.registry.addButton('codeeditor', {
tooltip: 'Insert code block',
icon: 'codeblock',
onAction() {
editor.execCommand('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(Code) {
// 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', async function() {
const Code = await window.importVersioned('code');
// 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(Code);
});
// 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(Code), 100);
});
}, 200);
});
}
/**
* @param {WysiwygConfigOptions} options
* @return {register}
*/
export function getPlugin(options) {
return register;
}