Juergen Kunz
ee470775b2
- Implemented WysiwygModalManager for managing modals related to code blocks and block settings. - Created WysiwygSelection for handling text selection across Shadow DOM boundaries. - Introduced WysiwygShortcuts for managing keyboard shortcuts and slash menu items. - Developed wysiwygStyles for consistent styling of the WYSIWYG editor. - Defined types for blocks, slash menu items, and shortcut patterns in wysiwyg.types.ts.
533 lines
18 KiB
TypeScript
533 lines
18 KiB
TypeScript
import { BaseBlockHandler, type IBlockEventHandlers } from '../block.base.js';
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import type { IBlock } from '../../wysiwyg.types.js';
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import { cssManager } from '@design.estate/dees-element';
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import { WysiwygBlocks } from '../../wysiwyg.blocks.js';
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import { WysiwygSelection } from '../../wysiwyg.selection.js';
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export class HeadingBlockHandler extends BaseBlockHandler {
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type: string;
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private level: 1 | 2 | 3;
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// Track cursor position
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private lastKnownCursorPosition: number = 0;
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private lastSelectedText: string = '';
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private selectionHandler: (() => void) | null = null;
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constructor(type: 'heading-1' | 'heading-2' | 'heading-3') {
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super();
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this.type = type;
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this.level = parseInt(type.split('-')[1]) as 1 | 2 | 3;
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}
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render(block: IBlock, isSelected: boolean): string {
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const selectedClass = isSelected ? ' selected' : '';
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const placeholder = this.getPlaceholder();
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return `
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<div
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class="block heading-${this.level}${selectedClass}"
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contenteditable="true"
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data-placeholder="${placeholder}"
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data-block-id="${block.id}"
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data-block-type="${block.type}"
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></div>
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`;
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}
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setup(element: HTMLElement, block: IBlock, handlers: IBlockEventHandlers): void {
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const headingBlock = element.querySelector(`.block.heading-${this.level}`) as HTMLDivElement;
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if (!headingBlock) {
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console.error('HeadingBlockHandler.setup: No heading block element found');
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return;
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}
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// Set initial content if needed
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if (block.content && !headingBlock.innerHTML) {
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headingBlock.innerHTML = block.content;
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}
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// Input handler with cursor tracking
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headingBlock.addEventListener('input', (e) => {
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handlers.onInput(e as InputEvent);
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// Track cursor position after input
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const pos = this.getCursorPosition(element);
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if (pos !== null) {
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this.lastKnownCursorPosition = pos;
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}
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});
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// Keydown handler with cursor tracking
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headingBlock.addEventListener('keydown', (e) => {
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// Track cursor position before keydown
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const pos = this.getCursorPosition(element);
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if (pos !== null) {
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this.lastKnownCursorPosition = pos;
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}
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handlers.onKeyDown(e);
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});
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// Focus handler
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headingBlock.addEventListener('focus', () => {
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handlers.onFocus();
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});
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// Blur handler
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headingBlock.addEventListener('blur', () => {
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handlers.onBlur();
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});
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// Composition handlers for IME support
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headingBlock.addEventListener('compositionstart', () => {
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handlers.onCompositionStart();
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});
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headingBlock.addEventListener('compositionend', () => {
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handlers.onCompositionEnd();
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});
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// Mouse up handler
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headingBlock.addEventListener('mouseup', (e) => {
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const pos = this.getCursorPosition(element);
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if (pos !== null) {
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this.lastKnownCursorPosition = pos;
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}
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// Selection will be handled by selectionchange event
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handlers.onMouseUp?.(e);
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});
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// Click handler with delayed cursor tracking
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headingBlock.addEventListener('click', (e: MouseEvent) => {
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// Small delay to let browser set cursor position
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setTimeout(() => {
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const pos = this.getCursorPosition(element);
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if (pos !== null) {
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this.lastKnownCursorPosition = pos;
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}
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}, 0);
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});
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// Keyup handler for additional cursor tracking
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headingBlock.addEventListener('keyup', (e) => {
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const pos = this.getCursorPosition(element);
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if (pos !== null) {
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this.lastKnownCursorPosition = pos;
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}
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});
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// Set up selection change handler
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this.setupSelectionHandler(element, headingBlock, block);
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}
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private setupSelectionHandler(element: HTMLElement, headingBlock: HTMLDivElement, block: IBlock): void {
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// Add selection change handler
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const checkSelection = () => {
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const selection = window.getSelection();
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if (!selection || selection.rangeCount === 0) return;
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const selectedText = selection.toString();
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if (selectedText.length === 0) {
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// Clear selection if no text
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if (this.lastSelectedText) {
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this.lastSelectedText = '';
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this.dispatchSelectionEvent(element, {
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text: '',
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blockId: block.id,
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hasSelection: false
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});
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}
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return;
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}
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// Get parent wysiwyg component's shadow root - in setup, we need to traverse
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const wysiwygBlock = (headingBlock.getRootNode() as ShadowRoot).host as any;
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const parentComponent = wysiwygBlock?.closest('dees-input-wysiwyg');
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const parentShadowRoot = parentComponent?.shadowRoot;
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const blockShadowRoot = wysiwygBlock?.shadowRoot;
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// Use getComposedRanges with shadow roots as per MDN docs
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const shadowRoots: ShadowRoot[] = [];
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if (parentShadowRoot) shadowRoots.push(parentShadowRoot);
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if (blockShadowRoot) shadowRoots.push(blockShadowRoot);
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// Get selection info using our Shadow DOM-aware utility
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const selectionInfo = WysiwygSelection.getSelectionInfo(...shadowRoots);
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if (!selectionInfo) return;
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// Check if selection is within this block
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const startInBlock = WysiwygSelection.containsAcrossShadowDOM(headingBlock, selectionInfo.startContainer);
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const endInBlock = WysiwygSelection.containsAcrossShadowDOM(headingBlock, selectionInfo.endContainer);
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if (startInBlock || endInBlock) {
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if (selectedText !== this.lastSelectedText) {
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this.lastSelectedText = selectedText;
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// Create range and get rect
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const range = WysiwygSelection.createRangeFromInfo(selectionInfo);
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const rect = range.getBoundingClientRect();
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// Dispatch event
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this.dispatchSelectionEvent(element, {
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text: selectedText.trim(),
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blockId: block.id,
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range: range,
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rect: rect,
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hasSelection: true
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});
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}
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} else if (this.lastSelectedText) {
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// Clear selection if no longer in this block
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this.lastSelectedText = '';
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this.dispatchSelectionEvent(element, {
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text: '',
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blockId: block.id,
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hasSelection: false
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});
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}
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};
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// Listen for selection changes
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document.addEventListener('selectionchange', checkSelection);
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// Store the handler for cleanup
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this.selectionHandler = checkSelection;
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// Clean up on disconnect (will be called by dees-wysiwyg-block)
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const wysiwygBlock = (headingBlock.getRootNode() as ShadowRoot).host as any;
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if (wysiwygBlock) {
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const originalDisconnectedCallback = (wysiwygBlock as any).disconnectedCallback;
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(wysiwygBlock as any).disconnectedCallback = async function() {
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if (this.selectionHandler) {
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document.removeEventListener('selectionchange', this.selectionHandler);
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this.selectionHandler = null;
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}
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if (originalDisconnectedCallback) {
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await originalDisconnectedCallback.call(wysiwygBlock);
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}
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}.bind(this);
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}
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}
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private dispatchSelectionEvent(element: HTMLElement, detail: any): void {
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const event = new CustomEvent('block-text-selected', {
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detail,
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bubbles: true,
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composed: true
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});
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element.dispatchEvent(event);
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}
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getStyles(): string {
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// Return styles for all heading levels
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return `
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.block.heading-1 {
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font-size: 32px;
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font-weight: 700;
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line-height: 1.2;
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margin: 24px 0 8px 0;
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color: ${cssManager.bdTheme('#000000', '#ffffff')};
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}
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.block.heading-2 {
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font-size: 24px;
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font-weight: 600;
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line-height: 1.3;
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margin: 20px 0 6px 0;
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color: ${cssManager.bdTheme('#000000', '#ffffff')};
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}
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.block.heading-3 {
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font-size: 20px;
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font-weight: 600;
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line-height: 1.4;
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margin: 16px 0 4px 0;
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color: ${cssManager.bdTheme('#000000', '#ffffff')};
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}
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`;
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}
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getPlaceholder(): string {
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switch(this.level) {
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case 1:
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return 'Heading 1';
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case 2:
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return 'Heading 2';
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case 3:
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return 'Heading 3';
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default:
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return 'Heading';
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}
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}
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/**
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* Helper to get the last text node in an element
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*/
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private getLastTextNode(element: Node): Text | null {
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if (element.nodeType === Node.TEXT_NODE) {
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return element as Text;
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}
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for (let i = element.childNodes.length - 1; i >= 0; i--) {
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const lastText = this.getLastTextNode(element.childNodes[i]);
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if (lastText) return lastText;
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}
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return null;
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}
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// Helper methods for heading functionality (mostly the same as paragraph)
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getCursorPosition(element: HTMLElement, context?: any): number | null {
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// Get the actual heading element
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const headingBlock = element.querySelector(`.block.heading-${this.level}`) as HTMLDivElement;
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if (!headingBlock) {
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return null;
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}
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// Get shadow roots from context
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const wysiwygBlock = context?.component;
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const parentComponent = wysiwygBlock?.closest('dees-input-wysiwyg');
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const parentShadowRoot = parentComponent?.shadowRoot;
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const blockShadowRoot = context?.shadowRoot;
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// Get selection info with both shadow roots for proper traversal
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const shadowRoots: ShadowRoot[] = [];
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if (parentShadowRoot) shadowRoots.push(parentShadowRoot);
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if (blockShadowRoot) shadowRoots.push(blockShadowRoot);
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const selectionInfo = WysiwygSelection.getSelectionInfo(...shadowRoots);
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if (!selectionInfo) {
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return null;
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}
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if (!WysiwygSelection.containsAcrossShadowDOM(headingBlock, selectionInfo.startContainer)) {
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return null;
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}
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// Create a range from start of element to cursor position
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const preCaretRange = document.createRange();
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preCaretRange.selectNodeContents(headingBlock);
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preCaretRange.setEnd(selectionInfo.startContainer, selectionInfo.startOffset);
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// Get the text content length up to cursor
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const position = preCaretRange.toString().length;
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return position;
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}
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getContent(element: HTMLElement, context?: any): string {
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const headingBlock = element.querySelector(`.block.heading-${this.level}`) as HTMLDivElement;
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if (!headingBlock) return '';
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// For headings, get the innerHTML which includes formatting tags
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const content = headingBlock.innerHTML || '';
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return content;
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}
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setContent(element: HTMLElement, content: string, context?: any): void {
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const headingBlock = element.querySelector(`.block.heading-${this.level}`) as HTMLDivElement;
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if (!headingBlock) return;
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// Store if we have focus
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const hadFocus = document.activeElement === headingBlock ||
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element.shadowRoot?.activeElement === headingBlock;
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headingBlock.innerHTML = content;
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// Restore focus if we had it
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if (hadFocus) {
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headingBlock.focus();
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}
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}
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setCursorToStart(element: HTMLElement, context?: any): void {
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const headingBlock = element.querySelector(`.block.heading-${this.level}`) as HTMLDivElement;
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if (headingBlock) {
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WysiwygBlocks.setCursorToStart(headingBlock);
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}
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}
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setCursorToEnd(element: HTMLElement, context?: any): void {
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const headingBlock = element.querySelector(`.block.heading-${this.level}`) as HTMLDivElement;
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if (headingBlock) {
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WysiwygBlocks.setCursorToEnd(headingBlock);
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}
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}
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focus(element: HTMLElement, context?: any): void {
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const headingBlock = element.querySelector(`.block.heading-${this.level}`) as HTMLDivElement;
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if (!headingBlock) return;
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// Ensure the element is focusable
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if (!headingBlock.hasAttribute('contenteditable')) {
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headingBlock.setAttribute('contenteditable', 'true');
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}
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headingBlock.focus();
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// If focus failed, try again after a microtask
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if (document.activeElement !== headingBlock && element.shadowRoot?.activeElement !== headingBlock) {
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Promise.resolve().then(() => {
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headingBlock.focus();
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});
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}
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}
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focusWithCursor(element: HTMLElement, position: 'start' | 'end' | number = 'end', context?: any): void {
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const headingBlock = element.querySelector(`.block.heading-${this.level}`) as HTMLDivElement;
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if (!headingBlock) return;
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// Ensure element is focusable first
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if (!headingBlock.hasAttribute('contenteditable')) {
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headingBlock.setAttribute('contenteditable', 'true');
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}
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// For 'end' position, we need to set up selection before focus to prevent browser default
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if (position === 'end' && headingBlock.textContent && headingBlock.textContent.length > 0) {
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// Set up the selection first
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const sel = window.getSelection();
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if (sel) {
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const range = document.createRange();
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const lastNode = this.getLastTextNode(headingBlock) || headingBlock;
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if (lastNode.nodeType === Node.TEXT_NODE) {
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range.setStart(lastNode, lastNode.textContent?.length || 0);
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range.setEnd(lastNode, lastNode.textContent?.length || 0);
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} else {
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range.selectNodeContents(lastNode);
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range.collapse(false);
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}
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sel.removeAllRanges();
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sel.addRange(range);
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}
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}
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// Now focus the element
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headingBlock.focus();
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// Set cursor position after focus is established (for non-end positions)
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const setCursor = () => {
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if (position === 'start') {
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this.setCursorToStart(element, context);
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} else if (position === 'end' && (!headingBlock.textContent || headingBlock.textContent.length === 0)) {
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// Only call setCursorToEnd for empty blocks
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this.setCursorToEnd(element, context);
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} else if (typeof position === 'number') {
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// Use the selection utility to set cursor position
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WysiwygSelection.setCursorPosition(headingBlock, position);
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}
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};
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// Ensure cursor is set after focus
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if (document.activeElement === headingBlock || element.shadowRoot?.activeElement === headingBlock) {
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setCursor();
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} else {
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// Wait for focus to be established
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Promise.resolve().then(() => {
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if (document.activeElement === headingBlock || element.shadowRoot?.activeElement === headingBlock) {
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setCursor();
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} else {
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// Try again with a small delay - sometimes focus needs more time
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setTimeout(() => {
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if (document.activeElement === headingBlock || element.shadowRoot?.activeElement === headingBlock) {
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setCursor();
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}
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}, 10);
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}
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});
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}
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}
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getSplitContent(element: HTMLElement, context?: any): { before: string; after: string } | null {
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const headingBlock = element.querySelector(`.block.heading-${this.level}`) as HTMLDivElement;
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if (!headingBlock) {
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return null;
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}
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// Get shadow roots from context
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const wysiwygBlock = context?.component;
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const parentComponent = wysiwygBlock?.closest('dees-input-wysiwyg');
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const parentShadowRoot = parentComponent?.shadowRoot;
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const blockShadowRoot = context?.shadowRoot;
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// Get selection info with both shadow roots for proper traversal
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const shadowRoots: ShadowRoot[] = [];
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if (parentShadowRoot) shadowRoots.push(parentShadowRoot);
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if (blockShadowRoot) shadowRoots.push(blockShadowRoot);
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const selectionInfo = WysiwygSelection.getSelectionInfo(...shadowRoots);
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if (!selectionInfo) {
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// Try using last known cursor position
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if (this.lastKnownCursorPosition !== null) {
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const fullText = headingBlock.textContent || '';
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const pos = Math.min(this.lastKnownCursorPosition, fullText.length);
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return {
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before: fullText.substring(0, pos),
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after: fullText.substring(pos)
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};
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}
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return null;
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}
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// Make sure the selection is within this block
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if (!WysiwygSelection.containsAcrossShadowDOM(headingBlock, selectionInfo.startContainer)) {
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// Try using last known cursor position
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if (this.lastKnownCursorPosition !== null) {
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const fullText = headingBlock.textContent || '';
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const pos = Math.min(this.lastKnownCursorPosition, fullText.length);
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return {
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before: fullText.substring(0, pos),
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after: fullText.substring(pos)
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};
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}
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return null;
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}
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// Get cursor position first
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const cursorPos = this.getCursorPosition(element, context);
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if (cursorPos === null || cursorPos === 0) {
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// If cursor is at start or can't determine position, move all content
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return {
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before: '',
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after: headingBlock.innerHTML
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};
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}
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// For HTML content, split using ranges to preserve formatting
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const beforeRange = document.createRange();
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const afterRange = document.createRange();
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// Before range: from start of element to cursor
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beforeRange.setStart(headingBlock, 0);
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beforeRange.setEnd(selectionInfo.startContainer, selectionInfo.startOffset);
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// After range: from cursor to end of element
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afterRange.setStart(selectionInfo.startContainer, selectionInfo.startOffset);
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afterRange.setEnd(headingBlock, headingBlock.childNodes.length);
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// Extract HTML content
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const beforeFragment = beforeRange.cloneContents();
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const afterFragment = afterRange.cloneContents();
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// Convert to HTML strings
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const tempDiv = document.createElement('div');
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tempDiv.appendChild(beforeFragment);
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const beforeHtml = tempDiv.innerHTML;
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tempDiv.innerHTML = '';
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tempDiv.appendChild(afterFragment);
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const afterHtml = tempDiv.innerHTML;
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return {
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before: beforeHtml,
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after: afterHtml
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};
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}
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} |