519 lines
15 KiB
TypeScript
519 lines
15 KiB
TypeScript
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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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/**
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* HTMLBlockHandler - Handles raw HTML content with preview/edit toggle
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*
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* Features:
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* - Live HTML preview (sandboxed)
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* - Edit/preview mode toggle
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* - Syntax highlighting in edit mode
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* - HTML validation hints
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* - Auto-save on mode switch
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*/
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export class HtmlBlockHandler extends BaseBlockHandler {
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type = 'html';
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render(block: IBlock, isSelected: boolean): string {
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const isEditMode = block.metadata?.isEditMode ?? true;
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const content = block.content || '';
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return `
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<div class="html-block-container${isSelected ? ' selected' : ''}"
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data-block-id="${block.id}"
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data-edit-mode="${isEditMode}">
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<div class="html-header">
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<div class="html-icon"></></div>
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<div class="html-title">HTML</div>
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<button class="html-toggle-mode" title="${isEditMode ? 'Preview' : 'Edit'}">
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${isEditMode ? '👁️' : '✏️'}
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</button>
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</div>
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<div class="html-content">
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${isEditMode ? this.renderEditor(content) : this.renderPreview(content)}
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</div>
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</div>
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`;
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}
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private renderEditor(content: string): string {
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return `
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<textarea class="html-editor"
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placeholder="Enter HTML content..."
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spellcheck="false">${this.escapeHtml(content)}</textarea>
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`;
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}
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private renderPreview(content: string): string {
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return `
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<div class="html-preview">
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${content || '<div class="preview-empty">No content to preview</div>'}
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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 container = element.querySelector('.html-block-container') as HTMLElement;
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const toggleBtn = element.querySelector('.html-toggle-mode') as HTMLButtonElement;
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if (!container || !toggleBtn) {
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console.error('HtmlBlockHandler: Could not find required elements');
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return;
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}
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// Initialize metadata
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if (!block.metadata) block.metadata = {};
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if (block.metadata.isEditMode === undefined) block.metadata.isEditMode = true;
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// Toggle mode button
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toggleBtn.addEventListener('click', (e) => {
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e.preventDefault();
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e.stopPropagation();
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// Save current content if in edit mode
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if (block.metadata.isEditMode) {
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const editor = container.querySelector('.html-editor') as HTMLTextAreaElement;
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if (editor) {
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block.content = editor.value;
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}
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}
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// Toggle mode
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block.metadata.isEditMode = !block.metadata.isEditMode;
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// Request UI update
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handlers.onRequestUpdate?.();
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});
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// Setup based on mode
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if (block.metadata.isEditMode) {
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this.setupEditor(element, block, handlers);
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} else {
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this.setupPreview(element, block, handlers);
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}
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}
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private setupEditor(element: HTMLElement, block: IBlock, handlers: IBlockEventHandlers): void {
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const editor = element.querySelector('.html-editor') as HTMLTextAreaElement;
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if (!editor) return;
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// Focus handling
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editor.addEventListener('focus', () => handlers.onFocus());
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editor.addEventListener('blur', () => handlers.onBlur());
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// Content changes
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editor.addEventListener('input', () => {
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block.content = editor.value;
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this.validateHtml(editor.value);
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});
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// Keyboard shortcuts
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editor.addEventListener('keydown', (e) => {
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// Tab handling for indentation
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if (e.key === 'Tab') {
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e.preventDefault();
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const start = editor.selectionStart;
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const end = editor.selectionEnd;
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const value = editor.value;
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if (e.shiftKey) {
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// Unindent
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const beforeCursor = value.substring(0, start);
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const lastNewline = beforeCursor.lastIndexOf('\n');
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const lineStart = lastNewline + 1;
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const lineContent = value.substring(lineStart, start);
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if (lineContent.startsWith(' ')) {
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editor.value = value.substring(0, lineStart) + lineContent.substring(2) + value.substring(start);
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editor.selectionStart = editor.selectionEnd = start - 2;
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}
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} else {
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// Indent
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editor.value = value.substring(0, start) + ' ' + value.substring(end);
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editor.selectionStart = editor.selectionEnd = start + 2;
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}
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block.content = editor.value;
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return;
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}
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// Auto-close tags (Ctrl/Cmd + /)
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if ((e.ctrlKey || e.metaKey) && e.key === '/') {
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e.preventDefault();
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this.autoCloseTag(editor);
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block.content = editor.value;
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return;
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}
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// Pass other key events to handlers
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handlers.onKeyDown(e);
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});
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// Auto-resize
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this.autoResize(editor);
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editor.addEventListener('input', () => this.autoResize(editor));
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}
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private setupPreview(element: HTMLElement, block: IBlock, handlers: IBlockEventHandlers): void {
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const container = element.querySelector('.html-block-container') as HTMLElement;
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const preview = element.querySelector('.html-preview') as HTMLElement;
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if (!container || !preview) return;
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// Make preview focusable
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preview.setAttribute('tabindex', '0');
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// Focus handling
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preview.addEventListener('focus', () => handlers.onFocus());
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preview.addEventListener('blur', () => handlers.onBlur());
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// Keyboard navigation
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preview.addEventListener('keydown', (e) => {
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// Switch to edit mode on Enter
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if (e.key === 'Enter' && !e.shiftKey) {
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e.preventDefault();
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block.metadata.isEditMode = true;
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handlers.onRequestUpdate?.();
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return;
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}
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handlers.onKeyDown(e);
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});
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// Sandbox styles and scripts in preview
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this.sandboxContent(preview);
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}
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private autoCloseTag(editor: HTMLTextAreaElement): void {
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const cursorPos = editor.selectionStart;
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const text = editor.value;
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// Find the opening tag
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let tagStart = cursorPos;
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while (tagStart > 0 && text[tagStart - 1] !== '<') {
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tagStart--;
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}
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if (tagStart > 0) {
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const tagContent = text.substring(tagStart, cursorPos);
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const tagMatch = tagContent.match(/^(\w+)/);
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if (tagMatch) {
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const tagName = tagMatch[1];
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const closingTag = `</${tagName}>`;
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// Insert closing tag
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editor.value = text.substring(0, cursorPos) + '>' + closingTag + text.substring(cursorPos);
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editor.selectionStart = editor.selectionEnd = cursorPos + 1;
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}
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}
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}
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private autoResize(editor: HTMLTextAreaElement): void {
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editor.style.height = 'auto';
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editor.style.height = editor.scrollHeight + 'px';
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}
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private validateHtml(html: string): boolean {
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// Basic HTML validation
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const openTags: string[] = [];
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const tagRegex = /<\/?([a-zA-Z][a-zA-Z0-9]*)\b[^>]*>/g;
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let match;
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while ((match = tagRegex.exec(html)) !== null) {
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const isClosing = match[0].startsWith('</');
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const tagName = match[1].toLowerCase();
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if (isClosing) {
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if (openTags.length === 0 || openTags[openTags.length - 1] !== tagName) {
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console.warn(`Mismatched closing tag: ${tagName}`);
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return false;
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}
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openTags.pop();
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} else if (!match[0].endsWith('/>')) {
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// Not a self-closing tag
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openTags.push(tagName);
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}
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}
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if (openTags.length > 0) {
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console.warn(`Unclosed tags: ${openTags.join(', ')}`);
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return false;
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}
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return true;
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}
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private sandboxContent(preview: HTMLElement): void {
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// Remove any script tags
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const scripts = preview.querySelectorAll('script');
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scripts.forEach(script => script.remove());
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// Remove event handlers
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const allElements = preview.querySelectorAll('*');
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allElements.forEach(el => {
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// Remove all on* attributes
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Array.from(el.attributes).forEach(attr => {
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if (attr.name.startsWith('on')) {
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el.removeAttribute(attr.name);
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}
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});
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});
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// Prevent forms from submitting
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const forms = preview.querySelectorAll('form');
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forms.forEach(form => {
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form.addEventListener('submit', (e) => {
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e.preventDefault();
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e.stopPropagation();
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});
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});
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}
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private escapeHtml(text: string): string {
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const div = document.createElement('div');
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div.textContent = text;
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return div.innerHTML;
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}
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getContent(element: HTMLElement): string {
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const editor = element.querySelector('.html-editor') as HTMLTextAreaElement;
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if (editor) {
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return editor.value;
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}
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// If in preview mode, return the stored content
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const container = element.querySelector('.html-block-container');
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const blockId = container?.getAttribute('data-block-id');
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// In real implementation, would need access to block data
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return '';
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}
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setContent(element: HTMLElement, content: string): void {
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const editor = element.querySelector('.html-editor') as HTMLTextAreaElement;
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if (editor) {
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editor.value = content;
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this.autoResize(editor);
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}
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}
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getCursorPosition(element: HTMLElement): number | null {
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const editor = element.querySelector('.html-editor') as HTMLTextAreaElement;
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return editor ? editor.selectionStart : null;
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}
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setCursorToStart(element: HTMLElement): void {
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const editor = element.querySelector('.html-editor') as HTMLTextAreaElement;
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if (editor) {
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editor.selectionStart = editor.selectionEnd = 0;
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editor.focus();
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} else {
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this.focus(element);
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}
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}
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setCursorToEnd(element: HTMLElement): void {
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const editor = element.querySelector('.html-editor') as HTMLTextAreaElement;
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if (editor) {
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const length = editor.value.length;
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editor.selectionStart = editor.selectionEnd = length;
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editor.focus();
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} else {
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this.focus(element);
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}
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}
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focus(element: HTMLElement): void {
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const editor = element.querySelector('.html-editor') as HTMLTextAreaElement;
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if (editor) {
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editor.focus();
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} else {
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const preview = element.querySelector('.html-preview') as HTMLElement;
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preview?.focus();
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}
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}
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focusWithCursor(element: HTMLElement, position: 'start' | 'end' | number = 'end'): void {
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const editor = element.querySelector('.html-editor') as HTMLTextAreaElement;
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if (editor) {
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if (position === 'start') {
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this.setCursorToStart(element);
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} else if (position === 'end') {
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this.setCursorToEnd(element);
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} else if (typeof position === 'number') {
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editor.selectionStart = editor.selectionEnd = position;
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editor.focus();
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}
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} else {
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this.focus(element);
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}
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}
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getSplitContent(element: HTMLElement): { before: string; after: string } | null {
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const editor = element.querySelector('.html-editor') as HTMLTextAreaElement;
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if (!editor) return null;
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const cursorPos = editor.selectionStart;
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return {
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before: editor.value.substring(0, cursorPos),
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after: editor.value.substring(cursorPos)
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};
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}
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getStyles(): string {
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return `
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/* HTML Block Container */
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.html-block-container {
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position: relative;
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margin: 12px 0;
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border: 1px solid ${cssManager.bdTheme('#e5e7eb', '#374151')};
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border-radius: 6px;
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overflow: hidden;
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transition: all 0.15s ease;
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background: ${cssManager.bdTheme('#ffffff', '#111827')};
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}
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.html-block-container.selected {
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border-color: ${cssManager.bdTheme('#9ca3af', '#6b7280')};
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}
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/* Header */
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.html-header {
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display: flex;
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align-items: center;
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gap: 8px;
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padding: 8px 12px;
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border-bottom: 1px solid ${cssManager.bdTheme('#e5e7eb', '#374151')};
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background: ${cssManager.bdTheme('#f9fafb', '#0a0a0a')};
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}
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.html-icon {
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||
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|
font-size: 14px;
|
||
|
|
font-weight: 600;
|
||
|
|
opacity: 0.8;
|
||
|
|
font-family: 'Monaco', 'Consolas', 'Courier New', monospace;
|
||
|
|
}
|
||
|
|
|
||
|
|
.html-title {
|
||
|
|
flex: 1;
|
||
|
|
font-size: 13px;
|
||
|
|
font-weight: 500;
|
||
|
|
color: ${cssManager.bdTheme('#374151', '#e5e7eb')};
|
||
|
|
}
|
||
|
|
|
||
|
|
.html-toggle-mode {
|
||
|
|
padding: 4px 8px;
|
||
|
|
background: transparent;
|
||
|
|
border: 1px solid ${cssManager.bdTheme('#e5e7eb', '#374151')};
|
||
|
|
border-radius: 4px;
|
||
|
|
font-size: 14px;
|
||
|
|
cursor: pointer;
|
||
|
|
transition: all 0.15s ease;
|
||
|
|
}
|
||
|
|
|
||
|
|
.html-toggle-mode:hover {
|
||
|
|
background: ${cssManager.bdTheme('#f3f4f6', '#1f2937')};
|
||
|
|
border-color: ${cssManager.bdTheme('#d1d5db', '#4b5563')};
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Content */
|
||
|
|
.html-content {
|
||
|
|
position: relative;
|
||
|
|
min-height: 120px;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Editor */
|
||
|
|
.html-editor {
|
||
|
|
width: 100%;
|
||
|
|
min-height: 120px;
|
||
|
|
padding: 12px;
|
||
|
|
background: transparent;
|
||
|
|
border: none;
|
||
|
|
outline: none;
|
||
|
|
resize: none;
|
||
|
|
font-family: 'Monaco', 'Consolas', 'Courier New', monospace;
|
||
|
|
font-size: 13px;
|
||
|
|
line-height: 1.6;
|
||
|
|
color: ${cssManager.bdTheme('#1f2937', '#f3f4f6')};
|
||
|
|
overflow: hidden;
|
||
|
|
}
|
||
|
|
|
||
|
|
.html-editor::placeholder {
|
||
|
|
color: ${cssManager.bdTheme('#9ca3af', '#6b7280')};
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Preview */
|
||
|
|
.html-preview {
|
||
|
|
padding: 12px;
|
||
|
|
min-height: 96px;
|
||
|
|
outline: none;
|
||
|
|
font-size: 14px;
|
||
|
|
line-height: 1.6;
|
||
|
|
color: ${cssManager.bdTheme('#1f2937', '#f3f4f6')};
|
||
|
|
}
|
||
|
|
|
||
|
|
.preview-empty {
|
||
|
|
color: ${cssManager.bdTheme('#9ca3af', '#6b7280')};
|
||
|
|
font-style: italic;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Sandboxed HTML preview styles */
|
||
|
|
.html-preview * {
|
||
|
|
max-width: 100%;
|
||
|
|
}
|
||
|
|
|
||
|
|
.html-preview img {
|
||
|
|
height: auto;
|
||
|
|
}
|
||
|
|
|
||
|
|
.html-preview a {
|
||
|
|
color: ${cssManager.bdTheme('#3b82f6', '#60a5fa')};
|
||
|
|
text-decoration: none;
|
||
|
|
}
|
||
|
|
|
||
|
|
.html-preview a:hover {
|
||
|
|
text-decoration: underline;
|
||
|
|
}
|
||
|
|
|
||
|
|
.html-preview table {
|
||
|
|
border-collapse: collapse;
|
||
|
|
width: 100%;
|
||
|
|
margin: 8px 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
.html-preview th,
|
||
|
|
.html-preview td {
|
||
|
|
border: 1px solid ${cssManager.bdTheme('#e5e7eb', '#374151')};
|
||
|
|
padding: 8px;
|
||
|
|
text-align: left;
|
||
|
|
}
|
||
|
|
|
||
|
|
.html-preview th {
|
||
|
|
background: ${cssManager.bdTheme('#f9fafb', '#1f2937')};
|
||
|
|
font-weight: 600;
|
||
|
|
}
|
||
|
|
|
||
|
|
.html-preview pre {
|
||
|
|
background: ${cssManager.bdTheme('#f3f4f6', '#1f2937')};
|
||
|
|
padding: 12px;
|
||
|
|
border-radius: 4px;
|
||
|
|
overflow-x: auto;
|
||
|
|
margin: 8px 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
.html-preview code {
|
||
|
|
background: ${cssManager.bdTheme('#f3f4f6', '#1f2937')};
|
||
|
|
padding: 2px 4px;
|
||
|
|
border-radius: 3px;
|
||
|
|
font-family: 'Monaco', 'Consolas', 'Courier New', monospace;
|
||
|
|
font-size: 0.9em;
|
||
|
|
}
|
||
|
|
|
||
|
|
.html-preview pre code {
|
||
|
|
background: transparent;
|
||
|
|
padding: 0;
|
||
|
|
}
|
||
|
|
`;
|
||
|
|
}
|
||
|
|
}
|