4615891b9d
This adds a new button to the Markdown toolbar, which allows creating the structure of a Markdown table. This makes it easier to wok with tables, as creating the structure by hand is annoying. Screenshots: https://codeberg.org/attachments/8bb00059-caa7-4453-b26c-15e4b7b93c83 https://codeberg.org/attachments/581e695c-33eb-4b81-9c63-a944aab443d9 Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/5589 Reviewed-by: Otto <otto@codeberg.org> Co-authored-by: JakobDev <jakobdev@gmx.de> Co-committed-by: JakobDev <jakobdev@gmx.de>
458 lines
18 KiB
JavaScript
458 lines
18 KiB
JavaScript
import '@github/markdown-toolbar-element';
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import '@github/text-expander-element';
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import $ from 'jquery';
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import {attachTribute} from '../tribute.js';
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import {hideElem, showElem, autosize, isElemVisible, replaceTextareaSelection} from '../../utils/dom.js';
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import {initEasyMDEPaste, initTextareaPaste} from './Paste.js';
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import {handleGlobalEnterQuickSubmit} from './QuickSubmit.js';
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import {renderPreviewPanelContent} from '../repo-editor.js';
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import {easyMDEToolbarActions} from './EasyMDEToolbarActions.js';
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import {initTextExpander} from './TextExpander.js';
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import {showErrorToast} from '../../modules/toast.js';
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import {POST} from '../../modules/fetch.js';
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let elementIdCounter = 0;
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/**
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* validate if the given textarea is non-empty.
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* @param {HTMLElement} textarea - The textarea element to be validated.
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* @returns {boolean} returns true if validation succeeded.
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*/
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export function validateTextareaNonEmpty(textarea) {
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// When using EasyMDE, the original edit area HTML element is hidden, breaking HTML5 input validation.
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// The workaround (https://github.com/sparksuite/simplemde-markdown-editor/issues/324) doesn't work with contenteditable, so we just show an alert.
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if (!textarea.value) {
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if (isElemVisible(textarea)) {
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textarea.required = true;
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const form = textarea.closest('form');
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form?.reportValidity();
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} else {
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// The alert won't hurt users too much, because we are dropping the EasyMDE and the check only occurs in a few places.
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showErrorToast('Require non-empty content');
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}
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return false;
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}
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return true;
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}
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class ComboMarkdownEditor {
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constructor(container, options = {}) {
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container._giteaComboMarkdownEditor = this;
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this.options = options;
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this.container = container;
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}
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async init() {
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this.prepareEasyMDEToolbarActions();
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this.setupContainer();
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this.setupTab();
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this.setupDropzone();
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this.setupTextarea();
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this.setupTableInserter();
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await this.switchToUserPreference();
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elementIdCounter++;
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}
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applyEditorHeights(el, heights) {
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if (!heights) return;
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if (heights.minHeight) el.style.minHeight = heights.minHeight;
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if (heights.height) el.style.height = heights.height;
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if (heights.maxHeight) el.style.maxHeight = heights.maxHeight;
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}
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setupContainer() {
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initTextExpander(this.container.querySelector('text-expander'));
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this.container.addEventListener('ce-editor-content-changed', (e) => this.options?.onContentChanged?.(this, e));
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}
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setupTextarea() {
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this.textarea = this.container.querySelector('.markdown-text-editor');
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this.textarea._giteaComboMarkdownEditor = this;
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this.textarea.id = `_combo_markdown_editor_${elementIdCounter}`;
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this.textarea.addEventListener('input', (e) => this.options?.onContentChanged?.(this, e));
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this.applyEditorHeights(this.textarea, this.options.editorHeights);
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if (this.textarea.getAttribute('data-disable-autosize') !== 'true') {
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this.textareaAutosize = autosize(this.textarea, {viewportMarginBottom: 130});
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}
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this.textareaMarkdownToolbar = this.container.querySelector('markdown-toolbar');
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this.textareaMarkdownToolbar.setAttribute('for', this.textarea.id);
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for (const el of this.textareaMarkdownToolbar.querySelectorAll('.markdown-toolbar-button')) {
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// upstream bug: The role code is never executed in base MarkdownButtonElement https://github.com/github/markdown-toolbar-element/issues/70
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el.setAttribute('role', 'button');
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// the editor usually is in a form, so the buttons should have "type=button", avoiding conflicting with the form's submit.
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if (el.nodeName === 'BUTTON' && !el.getAttribute('type')) el.setAttribute('type', 'button');
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}
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this.textareaMarkdownToolbar.querySelector('button[data-md-action="indent"]')?.addEventListener('click', () => {
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this.indentSelection(false);
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});
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this.textareaMarkdownToolbar.querySelector('button[data-md-action="unindent"]')?.addEventListener('click', () => {
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this.indentSelection(true);
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});
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this.textareaMarkdownToolbar.querySelector('button[data-md-action="new-table"]')?.setAttribute('data-modal', `div[data-markdown-table-modal-id="${elementIdCounter}"]`);
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this.textarea.addEventListener('keydown', (e) => {
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if (e.shiftKey) {
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e.target._shiftDown = true;
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}
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if (e.key === 'Enter' && !e.shiftKey && !e.ctrlKey && !e.altKey) {
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if (!this.breakLine()) return; // Nothing changed, let the default handler work.
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this.options?.onContentChanged?.(this, e);
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e.preventDefault();
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}
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});
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this.textarea.addEventListener('keyup', (e) => {
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if (!e.shiftKey) {
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e.target._shiftDown = false;
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}
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});
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const monospaceButton = this.container.querySelector('.markdown-switch-monospace');
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const monospaceEnabled = localStorage?.getItem('markdown-editor-monospace') === 'true';
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const monospaceText = monospaceButton.getAttribute(monospaceEnabled ? 'data-disable-text' : 'data-enable-text');
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monospaceButton.setAttribute('data-tooltip-content', monospaceText);
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monospaceButton.setAttribute('aria-checked', String(monospaceEnabled));
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monospaceButton?.addEventListener('click', (e) => {
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e.preventDefault();
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const enabled = localStorage?.getItem('markdown-editor-monospace') !== 'true';
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localStorage.setItem('markdown-editor-monospace', String(enabled));
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this.textarea.classList.toggle('tw-font-mono', enabled);
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const text = monospaceButton.getAttribute(enabled ? 'data-disable-text' : 'data-enable-text');
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monospaceButton.setAttribute('data-tooltip-content', text);
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monospaceButton.setAttribute('aria-checked', String(enabled));
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});
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const easymdeButton = this.container.querySelector('.markdown-switch-easymde');
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easymdeButton?.addEventListener('click', async (e) => {
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e.preventDefault();
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this.userPreferredEditor = 'easymde';
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await this.switchToEasyMDE();
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});
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if (this.dropzone) {
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initTextareaPaste(this.textarea, this.dropzone);
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}
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}
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setupDropzone() {
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const dropzoneParentContainer = this.container.getAttribute('data-dropzone-parent-container');
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if (dropzoneParentContainer) {
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this.dropzone = this.container.closest(this.container.getAttribute('data-dropzone-parent-container'))?.querySelector('.dropzone');
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}
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}
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setupTab() {
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const $container = $(this.container);
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const tabs = $container[0].querySelectorAll('.tabular.menu > .item');
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// Fomantic Tab requires the "data-tab" to be globally unique.
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// So here it uses our defined "data-tab-for" and "data-tab-panel" to generate the "data-tab" attribute for Fomantic.
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const tabEditor = Array.from(tabs).find((tab) => tab.getAttribute('data-tab-for') === 'markdown-writer');
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const tabPreviewer = Array.from(tabs).find((tab) => tab.getAttribute('data-tab-for') === 'markdown-previewer');
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tabEditor.setAttribute('data-tab', `markdown-writer-${elementIdCounter}`);
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tabPreviewer.setAttribute('data-tab', `markdown-previewer-${elementIdCounter}`);
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const panelEditor = $container[0].querySelector('.ui.tab[data-tab-panel="markdown-writer"]');
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const panelPreviewer = $container[0].querySelector('.ui.tab[data-tab-panel="markdown-previewer"]');
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panelEditor.setAttribute('data-tab', `markdown-writer-${elementIdCounter}`);
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panelPreviewer.setAttribute('data-tab', `markdown-previewer-${elementIdCounter}`);
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tabEditor.addEventListener('click', () => {
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requestAnimationFrame(() => {
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this.focus();
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});
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});
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$(tabs).tab();
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this.previewUrl = tabPreviewer.getAttribute('data-preview-url');
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this.previewContext = tabPreviewer.getAttribute('data-preview-context');
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this.previewMode = this.options.previewMode ?? 'comment';
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this.previewWiki = this.options.previewWiki ?? false;
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tabPreviewer.addEventListener('click', async () => {
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const formData = new FormData();
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formData.append('mode', this.previewMode);
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formData.append('context', this.previewContext);
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formData.append('text', this.value());
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formData.append('wiki', this.previewWiki);
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const response = await POST(this.previewUrl, {data: formData});
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const data = await response.text();
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renderPreviewPanelContent($(panelPreviewer), data);
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});
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}
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addNewTable(event) {
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const elementId = event.target.getAttribute('data-element-id');
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const newTableModal = document.querySelector(`div[data-markdown-table-modal-id="${elementId}"]`);
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const form = newTableModal.querySelector('div[data-selector-name="form"]');
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// Vaildate input fields
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for (const currentInput of form.querySelectorAll('input')) {
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if (!currentInput.checkValidity()) {
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currentInput.reportValidity();
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return;
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}
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}
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let headerText = form.querySelector('input[name="table-header"]').value;
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let contentText = form.querySelector('input[name="table-content"]').value;
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const rowCount = parseInt(form.querySelector('input[name="table-rows"]').value);
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const columnCount = parseInt(form.querySelector('input[name="table-columns"]').value);
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headerText = headerText.padEnd(contentText.length);
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contentText = contentText.padEnd(headerText.length);
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let code = `| ${(new Array(columnCount)).fill(headerText).join(' | ')} |\n`;
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code += `|-${(new Array(columnCount)).fill('-'.repeat(headerText.length)).join('-|-')}-|\n`;
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for (let i = 0; i < rowCount; i++) {
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code += `| ${(new Array(columnCount)).fill(contentText).join(' | ')} |\n`;
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}
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replaceTextareaSelection(document.getElementById(`_combo_markdown_editor_${elementId}`), code);
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// Close the modal
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newTableModal.querySelector('button[data-selector-name="cancel-button"]').click();
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}
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setupTableInserter() {
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const newTableModal = this.container.querySelector('div[data-modal-name="new-markdown-table"]');
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newTableModal.setAttribute('data-markdown-table-modal-id', elementIdCounter);
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const button = newTableModal.querySelector('button[data-selector-name="ok-button"]');
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button.setAttribute('data-element-id', elementIdCounter);
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button.addEventListener('click', this.addNewTable);
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}
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prepareEasyMDEToolbarActions() {
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this.easyMDEToolbarDefault = [
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'bold', 'italic', 'strikethrough', '|', 'heading-1', 'heading-2', 'heading-3',
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'heading-bigger', 'heading-smaller', '|', 'code', 'quote', '|', 'gitea-checkbox-empty',
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'gitea-checkbox-checked', '|', 'unordered-list', 'ordered-list', '|', 'link', 'image',
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'table', 'horizontal-rule', '|', 'gitea-switch-to-textarea',
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];
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}
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parseEasyMDEToolbar(EasyMDE, actions) {
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this.easyMDEToolbarActions = this.easyMDEToolbarActions || easyMDEToolbarActions(EasyMDE, this);
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const processed = [];
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for (const action of actions) {
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const actionButton = this.easyMDEToolbarActions[action];
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if (!actionButton) throw new Error(`Unknown EasyMDE toolbar action ${action}`);
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processed.push(actionButton);
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}
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return processed;
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}
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async switchToUserPreference() {
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if (this.userPreferredEditor === 'easymde') {
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await this.switchToEasyMDE();
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} else {
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this.switchToTextarea();
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}
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}
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switchToTextarea() {
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if (!this.easyMDE) return;
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showElem(this.textareaMarkdownToolbar);
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if (this.easyMDE) {
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this.easyMDE.toTextArea();
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this.easyMDE = null;
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}
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}
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async switchToEasyMDE() {
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if (this.easyMDE) return;
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// EasyMDE's CSS should be loaded via webpack config, otherwise our own styles can not overwrite the default styles.
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const {default: EasyMDE} = await import(/* webpackChunkName: "easymde" */'easymde');
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const easyMDEOpt = {
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autoDownloadFontAwesome: false,
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element: this.textarea,
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forceSync: true,
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renderingConfig: {singleLineBreaks: false},
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indentWithTabs: false,
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tabSize: 4,
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spellChecker: false,
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inputStyle: 'contenteditable', // nativeSpellcheck requires contenteditable
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nativeSpellcheck: true,
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...this.options.easyMDEOptions,
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};
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easyMDEOpt.toolbar = this.parseEasyMDEToolbar(EasyMDE, easyMDEOpt.toolbar ?? this.easyMDEToolbarDefault);
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this.easyMDE = new EasyMDE(easyMDEOpt);
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this.easyMDE.codemirror.on('change', (...args) => {this.options?.onContentChanged?.(this, ...args)});
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this.easyMDE.codemirror.setOption('extraKeys', {
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'Cmd-Enter': (cm) => handleGlobalEnterQuickSubmit(cm.getTextArea()),
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'Ctrl-Enter': (cm) => handleGlobalEnterQuickSubmit(cm.getTextArea()),
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Enter: (cm) => {
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const tributeContainer = document.querySelector('.tribute-container');
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if (!tributeContainer || tributeContainer.style.display === 'none') {
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cm.execCommand('newlineAndIndent');
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}
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},
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Up: (cm) => {
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const tributeContainer = document.querySelector('.tribute-container');
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if (!tributeContainer || tributeContainer.style.display === 'none') {
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return cm.execCommand('goLineUp');
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}
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},
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Down: (cm) => {
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const tributeContainer = document.querySelector('.tribute-container');
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if (!tributeContainer || tributeContainer.style.display === 'none') {
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return cm.execCommand('goLineDown');
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}
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},
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});
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this.applyEditorHeights(this.container.querySelector('.CodeMirror-scroll'), this.options.editorHeights);
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await attachTribute(this.easyMDE.codemirror.getInputField(), {mentions: true, emoji: true});
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initEasyMDEPaste(this.easyMDE, this.dropzone);
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hideElem(this.textareaMarkdownToolbar);
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}
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value(v = undefined) {
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if (v === undefined) {
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if (this.easyMDE) {
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return this.easyMDE.value();
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}
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return this.textarea.value;
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}
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if (this.easyMDE) {
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this.easyMDE.value(v);
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} else {
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this.textarea.value = v;
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}
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this.textareaAutosize?.resizeToFit();
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}
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focus() {
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if (this.easyMDE) {
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this.easyMDE.codemirror.focus();
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} else {
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this.textarea.focus();
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}
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}
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moveCursorToEnd() {
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this.textarea.focus();
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this.textarea.setSelectionRange(this.textarea.value.length, this.textarea.value.length);
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if (this.easyMDE) {
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this.easyMDE.codemirror.focus();
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this.easyMDE.codemirror.setCursor(this.easyMDE.codemirror.lineCount(), 0);
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}
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}
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indentSelection(unindent) {
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// Indent with 4 spaces, unindent 4 spaces or fewer or a lost tab.
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const indentPrefix = ' ';
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const unindentRegex = /^( {1,4}|\t)/;
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// Indent all lines that are included in the selection, partially or whole, while preserving the original selection at the end.
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const lines = this.textarea.value.split('\n');
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const changedLines = [];
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// The current selection or cursor position.
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const [start, end] = [this.textarea.selectionStart, this.textarea.selectionEnd];
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// The range containing whole lines that will effectively be replaced.
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let [editStart, editEnd] = [start, end];
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// The range that needs to be re-selected to match previous selection.
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let [newStart, newEnd] = [start, end];
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// The start and end position of the current line (where end points to the newline or EOF)
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let [lineStart, lineEnd] = [0, 0];
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for (const line of lines) {
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lineEnd = lineStart + line.length + 1;
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if (lineEnd <= start) {
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lineStart = lineEnd;
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continue;
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}
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const updated = unindent ? line.replace(unindentRegex, '') : indentPrefix + line;
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changedLines.push(updated);
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const move = updated.length - line.length;
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if (start >= lineStart && start < lineEnd) {
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editStart = lineStart;
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newStart = Math.max(start + move, lineStart);
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}
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newEnd += move;
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editEnd = lineEnd - 1;
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lineStart = lineEnd;
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if (lineStart > end) break;
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}
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// Update changed lines whole.
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const text = changedLines.join('\n');
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this.textarea.focus();
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this.textarea.setSelectionRange(editStart, editEnd);
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if (!document.execCommand('insertText', false, text)) {
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// execCommand is deprecated, but setRangeText (and any other direct value modifications) erases the native undo history.
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// So only fall back to it if execCommand fails.
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this.textarea.setRangeText(text);
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}
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// Set selection to (effectively) be the same as before.
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this.textarea.setSelectionRange(newStart, Math.max(newStart, newEnd));
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}
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breakLine() {
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const [start, end] = [this.textarea.selectionStart, this.textarea.selectionEnd];
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// Do nothing if a range is selected
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if (start !== end) return false;
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const value = this.textarea.value;
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// Find the beginning of the current line.
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const lineStart = Math.max(0, value.lastIndexOf('\n', start - 1) + 1);
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// Find the end and extract the line.
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const lineEnd = value.indexOf('\n', start);
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const line = value.slice(lineStart, lineEnd === -1 ? value.length : lineEnd);
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// Match any whitespace at the start + any repeatable prefix + exactly one space after.
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const prefix = line.match(/^\s*((\d+)[.)]\s|[-*+]\s+(\[[ x]\]\s?)?|(>\s+)+)?/);
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// Defer to browser if we can't do anything more useful, or if the cursor is inside the prefix.
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if (!prefix || !prefix[0].length || lineStart + prefix[0].length > start) return false;
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// Insert newline + prefix.
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let text = `\n${prefix[0]}`;
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// Increment a number if present. (perhaps detecting repeating 1. and not doing that then would be a good idea)
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const num = text.match(/\d+/);
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if (num) text = text.replace(num[0], Number(num[0]) + 1);
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text = text.replace('[x]', '[ ]');
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if (!document.execCommand('insertText', false, text)) {
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this.textarea.setRangeText(text);
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}
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return true;
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}
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get userPreferredEditor() {
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return window.localStorage.getItem(`markdown-editor-${this.options.useScene ?? 'default'}`);
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}
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set userPreferredEditor(s) {
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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;
|
|
}
|