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gitea/web_src/js/features/comp/ComboMarkdownEditor.js

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import '@github/markdown-toolbar-element';
import '@github/text-expander-element';
import $ from 'jquery';
import {attachTribute} from '../tribute.js';
import {hideElem, showElem, autosize} from '../../utils/dom.js';
import {initEasyMDEImagePaste, initTextareaImagePaste} from './ImagePaste.js';
import {handleGlobalEnterQuickSubmit} from './QuickSubmit.js';
import {emojiKeys, emojiString} from '../emoji.js';
import {renderPreviewPanelContent} from '../repo-editor.js';
let elementIdCounter = 0;
const maxExpanderMatches = 6;
/**
* validate if the given textarea is non-empty.
* @param {jQuery} $textarea
* @returns {boolean} returns true if validation succeeded.
*/
export function validateTextareaNonEmpty($textarea) {
// When using EasyMDE, the original edit area HTML element is hidden, breaking HTML5 input validation.
// The workaround (https://github.com/sparksuite/simplemde-markdown-editor/issues/324) doesn't work with contenteditable, so we just show an alert.
if (!$textarea.val()) {
if ($textarea.is(':visible')) {
$textarea.prop('required', true);
const $form = $textarea.parents('form');
$form[0]?.reportValidity();
} else {
// The alert won't hurt users too much, because we are dropping the EasyMDE and the check only occurs in a few places.
alert('Require non-empty content');
}
return false;
}
return true;
}
class ComboMarkdownEditor {
constructor(container, options = {}) {
container._giteaComboMarkdownEditor = this;
this.options = options;
this.container = container;
}
async init() {
this.prepareEasyMDEToolbarActions();
this.setupTab();
this.setupDropzone();
this.setupTextarea();
this.setupExpander();
if (this.userPreferredEditor === 'easymde') {
await this.switchToEasyMDE();
}
}
applyEditorHeights(el, heights) {
if (!heights) return;
if (heights.minHeight) el.style.minHeight = heights.minHeight;
if (heights.height) el.style.height = heights.height;
if (heights.maxHeight) el.style.maxHeight = heights.maxHeight;
}
setupTextarea() {
this.textarea = this.container.querySelector('.markdown-text-editor');
this.textarea._giteaComboMarkdownEditor = this;
this.textarea.id = `_combo_markdown_editor_${String(elementIdCounter++)}`;
this.textarea.addEventListener('input', (e) => this.options?.onContentChanged?.(this, e));
this.applyEditorHeights(this.textarea, this.options.editorHeights);
this.textareaAutosize = autosize(this.textarea, {viewportMarginBottom: 130});
this.textareaMarkdownToolbar = this.container.querySelector('markdown-toolbar');
this.textareaMarkdownToolbar.setAttribute('for', this.textarea.id);
for (const el of this.textareaMarkdownToolbar.querySelectorAll('.markdown-toolbar-button')) {
// upstream bug: The role code is never executed in base MarkdownButtonElement https://github.com/github/markdown-toolbar-element/issues/70
el.setAttribute('role', 'button');
}
this.switchToEasyMDEButton = this.container.querySelector('.markdown-switch-easymde');
this.switchToEasyMDEButton?.addEventListener('click', async (e) => {
e.preventDefault();
this.userPreferredEditor = 'easymde';
await this.switchToEasyMDE();
});
if (this.dropzone) {
initTextareaImagePaste(this.textarea, this.dropzone);
}
}
setupExpander() {
const expander = this.container.querySelector('text-expander');
expander?.addEventListener('text-expander-change', ({detail: {key, provide, text}}) => {
if (key === ':') {
const matches = [];
for (const name of emojiKeys) {
if (name.includes(text)) {
matches.push(name);
if (matches.length >= maxExpanderMatches) break;
}
}
if (!matches.length) return provide({matched: false});
const ul = document.createElement('ul');
ul.classList.add('suggestions');
for (const name of matches) {
const emoji = emojiString(name);
const li = document.createElement('li');
li.setAttribute('role', 'option');
li.setAttribute('data-value', emoji);
li.textContent = `${emoji} ${name}`;
ul.append(li);
}
provide({matched: true, fragment: ul});
} else if (key === '@') {
const matches = [];
for (const obj of window.config.tributeValues) {
if (obj.key.includes(text)) {
matches.push(obj);
if (matches.length >= maxExpanderMatches) break;
}
}
if (!matches.length) return provide({matched: false});
const ul = document.createElement('ul');
ul.classList.add('suggestions');
for (const {value, name, fullname, avatar} of matches) {
const li = document.createElement('li');
li.setAttribute('role', 'option');
li.setAttribute('data-value', `${key}${value}`);
const img = document.createElement('img');
img.src = avatar;
li.append(img);
const nameSpan = document.createElement('span');
nameSpan.textContent = name;
li.append(nameSpan);
if (fullname && fullname.toLowerCase() !== name) {
const fullnameSpan = document.createElement('span');
fullnameSpan.classList.add('fullname');
fullnameSpan.textContent = fullname;
li.append(fullnameSpan);
}
ul.append(li);
}
provide({matched: true, fragment: ul});
}
});
expander?.addEventListener('text-expander-value', ({detail}) => {
if (detail?.item) {
detail.value = detail.item.getAttribute('data-value');
}
});
}
setupDropzone() {
const dropzoneParentContainer = this.container.getAttribute('data-dropzone-parent-container');
if (dropzoneParentContainer) {
this.dropzone = this.container.closest(this.container.getAttribute('data-dropzone-parent-container'))?.querySelector('.dropzone');
}
}
setupTab() {
const $container = $(this.container);
const $tabMenu = $container.find('.tabular.menu');
const $tabs = $tabMenu.find('> .item');
// Fomantic Tab requires the "data-tab" to be globally unique.
// So here it uses our defined "data-tab-for" and "data-tab-panel" to generate the "data-tab" attribute for Fomantic.
const $tabEditor = $tabs.filter(`.item[data-tab-for="markdown-writer"]`);
const $tabPreviewer = $tabs.filter(`.item[data-tab-for="markdown-previewer"]`);
$tabEditor.attr('data-tab', `markdown-writer-${elementIdCounter}`);
$tabPreviewer.attr('data-tab', `markdown-previewer-${elementIdCounter}`);
const $panelEditor = $container.find('.ui.tab[data-tab-panel="markdown-writer"]');
const $panelPreviewer = $container.find('.ui.tab[data-tab-panel="markdown-previewer"]');
$panelEditor.attr('data-tab', `markdown-writer-${elementIdCounter}`);
$panelPreviewer.attr('data-tab', `markdown-previewer-${elementIdCounter}`);
elementIdCounter++;
$tabs.tab();
this.previewUrl = $tabPreviewer.attr('data-preview-url');
this.previewContext = $tabPreviewer.attr('data-preview-context');
this.previewMode = this.options.previewMode ?? 'comment';
this.previewWiki = this.options.previewWiki ?? false;
$tabPreviewer.on('click', () => {
$.post(this.previewUrl, {
_csrf: window.config.csrfToken,
mode: this.previewMode,
context: this.previewContext,
text: this.value(),
wiki: this.previewWiki,
}, (data) => {
renderPreviewPanelContent($panelPreviewer, data);
});
});
}
prepareEasyMDEToolbarActions() {
this.easyMDEToolbarDefault = [
'bold', 'italic', 'strikethrough', '|', 'heading-1', 'heading-2', 'heading-3', 'heading-bigger', 'heading-smaller', '|',
'code', 'quote', '|', 'gitea-checkbox-empty', 'gitea-checkbox-checked', '|',
'unordered-list', 'ordered-list', '|', 'link', 'image', 'table', 'horizontal-rule', '|', 'clean-block', '|',
'gitea-switch-to-textarea',
];
this.easyMDEToolbarActions = {
'gitea-checkbox-empty': {
action(e) {
const cm = e.codemirror;
cm.replaceSelection(`\n- [ ] ${cm.getSelection()}`);
cm.focus();
},
className: 'fa fa-square-o',
title: 'Add Checkbox (empty)',
},
'gitea-checkbox-checked': {
action(e) {
const cm = e.codemirror;
cm.replaceSelection(`\n- [x] ${cm.getSelection()}`);
cm.focus();
},
className: 'fa fa-check-square-o',
title: 'Add Checkbox (checked)',
},
'gitea-switch-to-textarea': {
action: () => {
this.userPreferredEditor = 'textarea';
this.switchToTextarea();
},
className: 'fa fa-file',
title: 'Revert to simple textarea',
},
'gitea-code-inline': {
action(e) {
const cm = e.codemirror;
const selection = cm.getSelection();
cm.replaceSelection(`\`${selection}\``);
if (!selection) {
const cursorPos = cm.getCursor();
cm.setCursor(cursorPos.line, cursorPos.ch - 1);
}
cm.focus();
},
className: 'fa fa-angle-right',
title: 'Add Inline Code',
}
};
}
parseEasyMDEToolbar(actions) {
const processed = [];
for (const action of actions) {
if (action.startsWith('gitea-')) {
const giteaAction = this.easyMDEToolbarActions[action];
if (!giteaAction) throw new Error(`Unknown EasyMDE toolbar action ${action}`);
processed.push(giteaAction);
} else {
processed.push(action);
}
}
return processed;
}
switchToTextarea() {
showElem(this.textareaMarkdownToolbar);
if (this.easyMDE) {
this.easyMDE.toTextArea();
this.easyMDE = null;
}
}
async switchToEasyMDE() {
// EasyMDE's CSS should be loaded via webpack config, otherwise our own styles can not overwrite the default styles.
const {default: EasyMDE} = await import(/* webpackChunkName: "easymde" */'easymde');
const easyMDEOpt = {
autoDownloadFontAwesome: false,
element: this.textarea,
forceSync: true,
renderingConfig: {singleLineBreaks: false},
indentWithTabs: false,
tabSize: 4,
spellChecker: false,
inputStyle: 'contenteditable', // nativeSpellcheck requires contenteditable
nativeSpellcheck: true,
...this.options.easyMDEOptions,
};
easyMDEOpt.toolbar = this.parseEasyMDEToolbar(easyMDEOpt.toolbar ?? this.easyMDEToolbarDefault);
this.easyMDE = new EasyMDE(easyMDEOpt);
this.easyMDE.codemirror.on('change', (...args) => {this.options?.onContentChanged?.(this, ...args)});
this.easyMDE.codemirror.setOption('extraKeys', {
'Cmd-Enter': (cm) => handleGlobalEnterQuickSubmit(cm.getTextArea()),
'Ctrl-Enter': (cm) => handleGlobalEnterQuickSubmit(cm.getTextArea()),
Enter: (cm) => {
const tributeContainer = document.querySelector('.tribute-container');
if (!tributeContainer || tributeContainer.style.display === 'none') {
cm.execCommand('newlineAndIndent');
}
},
Up: (cm) => {
const tributeContainer = document.querySelector('.tribute-container');
if (!tributeContainer || tributeContainer.style.display === 'none') {
return cm.execCommand('goLineUp');
}
},
Down: (cm) => {
const tributeContainer = document.querySelector('.tribute-container');
if (!tributeContainer || tributeContainer.style.display === 'none') {
return cm.execCommand('goLineDown');
}
},
});
this.applyEditorHeights(this.container.querySelector('.CodeMirror-scroll'), this.options.editorHeights);
await attachTribute(this.easyMDE.codemirror.getInputField(), {mentions: true, emoji: true});
initEasyMDEImagePaste(this.easyMDE, this.dropzone);
hideElem(this.textareaMarkdownToolbar);
}
value(v = undefined) {
if (v === undefined) {
if (this.easyMDE) {
return this.easyMDE.value();
}
return this.textarea.value;
}
if (this.easyMDE) {
this.easyMDE.value(v);
} else {
this.textarea.value = v;
}
this.textareaAutosize.resizeToFit();
}
focus() {
if (this.easyMDE) {
this.easyMDE.codemirror.focus();
} else {
this.textarea.focus();
}
}
moveCursorToEnd() {
this.textarea.focus();
this.textarea.setSelectionRange(this.textarea.value.length, this.textarea.value.length);
if (this.easyMDE) {
this.easyMDE.codemirror.focus();
this.easyMDE.codemirror.setCursor(this.easyMDE.codemirror.lineCount(), 0);
}
}
get userPreferredEditor() {
return window.localStorage.getItem(`markdown-editor-${this.options.useScene ?? 'default'}`);
}
set userPreferredEditor(s) {
window.localStorage.setItem(`markdown-editor-${this.options.useScene ?? 'default'}`, s);
}
}
export function getComboMarkdownEditor(el) {
if (el instanceof $) el = el[0];
return el?._giteaComboMarkdownEditor;
}
export async function initComboMarkdownEditor(container, options = {}) {
if (container instanceof $) {
if (container.length !== 1) {
throw new Error('initComboMarkdownEditor: container must be a single element');
}
container = container[0];
}
if (!container) {
throw new Error('initComboMarkdownEditor: container is null');
}
const editor = new ComboMarkdownEditor(container, options);
await editor.init();
return editor;
}