BookStack/resources/js/wysiwyg/plugin-codeeditor.js
Dan Brown 09c6a3c240
Started refactor and alignment of component system
- Updates old components to newer format, removes legacy component
support.
- Makes component registration easier and less duplicated.
- Adds base component class to extend for better editor support.
- Aligns global window exposure usage and aligns with other service
  names.
2022-11-14 23:19:02 +00:00

239 lines
No EOL
7.9 KiB
JavaScript
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

function elemIsCodeBlock(elem) {
return elem.tagName.toLowerCase() === 'code-block';
}
/**
* @param {Editor} editor
* @param {String} code
* @param {String} language
* @param {function(string, string)} callback (Receives (code: string,language: string)
*/
function showPopup(editor, code, language, callback) {
window.$components.first('code-editor').open(code, language, (newCode, newLang) => {
callback(newCode, newLang)
editor.focus()
});
}
/**
* @param {Editor} editor
* @param {CodeBlockElement} codeBlock
*/
function showPopupForCodeBlock(editor, codeBlock) {
showPopup(editor, codeBlock.getContent(), codeBlock.getLanguage(), (newCode, newLang) => {
codeBlock.setContent(newCode, newLang);
});
}
/**
* Define our custom code-block HTML element that we use.
* Needs to be delayed since it needs to be defined within the context of the
* child editor window and document, hence its definition within a callback.
* @param {Editor} editor
*/
function defineCodeBlockCustomElement(editor) {
const doc = editor.getDoc();
const win = doc.defaultView;
class CodeBlockElement extends win.HTMLElement {
constructor() {
super();
this.attachShadow({mode: 'open'});
const stylesToCopy = document.querySelectorAll('link[rel="stylesheet"]:not([media="print"])');
const copiedStyles = Array.from(stylesToCopy).map(styleEl => styleEl.cloneNode(false));
const cmContainer = document.createElement('div');
cmContainer.style.pointerEvents = 'none';
cmContainer.contentEditable = 'false';
cmContainer.classList.add('CodeMirrorContainer');
this.shadowRoot.append(...copiedStyles, cmContainer);
}
getLanguage() {
const getLanguageFromClassList = (classes) => {
const langClasses = classes.split(' ').filter(cssClass => cssClass.startsWith('language-'));
return (langClasses[0] || '').replace('language-', '');
};
const code = this.querySelector('code');
const pre = this.querySelector('pre');
return getLanguageFromClassList(pre.className) || (code && getLanguageFromClassList(code.className)) || '';
}
setContent(content, language) {
if (this.cm) {
importVersioned('code').then(Code => {
Code.setContent(this.cm, content);
Code.setMode(this.cm, language, content);
});
}
let pre = this.querySelector('pre');
if (!pre) {
pre = doc.createElement('pre');
this.append(pre);
}
pre.innerHTML = '';
const code = doc.createElement('code');
pre.append(code);
code.innerText = content;
code.className = `language-${language}`;
}
getContent() {
const code = this.querySelector('code') || this.querySelector('pre');
const tempEl = document.createElement('pre');
tempEl.innerHTML = code.innerHTML.replace(/\ufeff/g, '');
const brs = tempEl.querySelectorAll('br');
for (const br of brs) {
br.replaceWith('\n');
}
return tempEl.textContent;
}
connectedCallback() {
const connectedTime = Date.now();
if (this.cm) {
return;
}
this.cleanChildContent();
const content = this.getContent();
const lines = content.split('\n').length;
const height = (lines * 19.2) + 18 + 24;
this.style.height = `${height}px`;
const container = this.shadowRoot.querySelector('.CodeMirrorContainer');
const renderCodeMirror = (Code) => {
this.cm = Code.wysiwygView(container, content, this.getLanguage());
setTimeout(() => Code.updateLayout(this.cm), 10);
setTimeout(() => this.style.height = null, 12);
};
window.importVersioned('code').then((Code) => {
const timeout = (Date.now() - connectedTime < 20) ? 20 : 0;
setTimeout(() => renderCodeMirror(Code), timeout);
});
}
cleanChildContent() {
const pre = this.querySelector('pre');
if (!pre) return;
for (const preChild of pre.childNodes) {
if (preChild.nodeName === '#text' && preChild.textContent === '') {
preChild.remove();
}
}
}
}
win.customElements.define('code-block', CodeBlockElement);
}
/**
* @param {Editor} editor
* @param {String} url
*/
function register(editor, url) {
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.ui.registry.addButton('editcodeeditor', {
tooltip: 'Edit code block',
icon: 'edit-block',
onAction() {
editor.execCommand('codeeditor');
}
});
editor.addCommand('codeeditor', () => {
const selectedNode = editor.selection.getNode();
const doc = selectedNode.ownerDocument;
if (elemIsCodeBlock(selectedNode)) {
showPopupForCodeBlock(editor, selectedNode);
} else {
const textContent = editor.selection.getContent({format: 'text'});
showPopup(editor, textContent, '', (newCode, newLang) => {
const pre = doc.createElement('pre');
const code = doc.createElement('code');
code.classList.add(`language-${newLang}`);
code.innerText = newCode;
pre.append(code);
editor.insertContent(pre.outerHTML);
});
}
});
editor.on('dblclick', event => {
let selectedNode = editor.selection.getNode();
if (elemIsCodeBlock(selectedNode)) {
showPopupForCodeBlock(editor, selectedNode);
}
});
editor.on('PreInit', () => {
editor.parser.addNodeFilter('pre', function(elms) {
for (const el of elms) {
const wrapper = tinymce.html.Node.create('code-block', {
contenteditable: 'false',
});
const spans = el.getAll('span');
for (const span of spans) {
span.unwrap();
}
el.attr('style', null);
el.wrap(wrapper);
}
});
editor.parser.addNodeFilter('code-block', function(elms) {
for (const el of elms) {
el.attr('contenteditable', 'false');
}
});
editor.serializer.addNodeFilter('code-block', function(elms) {
for (const el of elms) {
el.unwrap();
}
});
});
editor.ui.registry.addContextToolbar('codeeditor', {
predicate: function (node) {
return node.nodeName.toLowerCase() === 'code-block';
},
items: 'editcodeeditor',
position: 'node',
scope: 'node'
});
editor.on('PreInit', () => {
defineCodeBlockCustomElement(editor);
});
}
/**
* @param {WysiwygConfigOptions} options
* @return {register}
*/
export function getPlugin(options) {
return register;
}