feat(editor): Add wysiwyg editor
This commit is contained in:
Juergen Kunz
244
ts_web/elements/wysiwyg/wysiwyg.converters.ts
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244
ts_web/elements/wysiwyg/wysiwyg.converters.ts
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import { type IBlock } from './wysiwyg.types.js';
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export class WysiwygConverters {
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static 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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static getHtmlOutput(blocks: IBlock[]): string {
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return blocks.map(block => {
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switch (block.type) {
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case 'paragraph':
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return block.content ? `<p>${this.escapeHtml(block.content)}</p>` : '';
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case 'heading-1':
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return `<h1>${this.escapeHtml(block.content)}</h1>`;
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case 'heading-2':
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return `<h2>${this.escapeHtml(block.content)}</h2>`;
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case 'heading-3':
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return `<h3>${this.escapeHtml(block.content)}</h3>`;
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case 'quote':
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return `<blockquote>${this.escapeHtml(block.content)}</blockquote>`;
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case 'code':
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return `<pre><code>${this.escapeHtml(block.content)}</code></pre>`;
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case 'list':
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const items = block.content.split('\n').filter(item => item.trim());
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if (items.length > 0) {
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const listTag = block.metadata?.listType === 'ordered' ? 'ol' : 'ul';
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return `<${listTag}>${items.map(item => `<li>${this.escapeHtml(item)}</li>`).join('')}</${listTag}>`;
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}
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return '';
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case 'divider':
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return '<hr>';
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default:
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return `<p>${this.escapeHtml(block.content)}</p>`;
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}
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}).filter(html => html !== '').join('\n');
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}
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static getMarkdownOutput(blocks: IBlock[]): string {
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return blocks.map(block => {
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switch (block.type) {
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case 'paragraph':
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return block.content;
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case 'heading-1':
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return `# ${block.content}`;
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case 'heading-2':
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return `## ${block.content}`;
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case 'heading-3':
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return `### ${block.content}`;
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case 'quote':
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return `> ${block.content}`;
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case 'code':
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return `\`\`\`\n${block.content}\n\`\`\``;
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case 'list':
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const items = block.content.split('\n').filter(item => item.trim());
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if (block.metadata?.listType === 'ordered') {
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return items.map((item, index) => `${index + 1}. ${item}`).join('\n');
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} else {
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return items.map(item => `- ${item}`).join('\n');
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}
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case 'divider':
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return '---';
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default:
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return block.content;
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}
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}).filter(md => md !== '').join('\n\n');
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}
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static parseHtmlToBlocks(html: string): IBlock[] {
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const parser = new DOMParser();
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const doc = parser.parseFromString(html, 'text/html');
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const blocks: IBlock[] = [];
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const processNode = (node: Node) => {
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if (node.nodeType === Node.TEXT_NODE && node.textContent?.trim()) {
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blocks.push({
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id: `block-${Date.now()}-${Math.random().toString(36).substring(2, 9)}`,
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type: 'paragraph',
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content: node.textContent.trim(),
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});
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} else if (node.nodeType === Node.ELEMENT_NODE) {
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const element = node as Element;
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const tagName = element.tagName.toLowerCase();
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switch (tagName) {
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case 'p':
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blocks.push({
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id: `block-${Date.now()}-${Math.random().toString(36).substring(2, 9)}`,
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type: 'paragraph',
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content: element.textContent || '',
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});
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break;
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case 'h1':
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blocks.push({
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id: `block-${Date.now()}-${Math.random().toString(36).substring(2, 9)}`,
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type: 'heading-1',
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content: element.textContent || '',
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});
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break;
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case 'h2':
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blocks.push({
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id: `block-${Date.now()}-${Math.random().toString(36).substring(2, 9)}`,
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type: 'heading-2',
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content: element.textContent || '',
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});
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break;
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case 'h3':
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blocks.push({
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id: `block-${Date.now()}-${Math.random().toString(36).substring(2, 9)}`,
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type: 'heading-3',
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content: element.textContent || '',
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});
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break;
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case 'blockquote':
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blocks.push({
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id: `block-${Date.now()}-${Math.random().toString(36).substring(2, 9)}`,
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type: 'quote',
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content: element.textContent || '',
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});
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break;
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case 'pre':
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case 'code':
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blocks.push({
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id: `block-${Date.now()}-${Math.random().toString(36).substring(2, 9)}`,
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type: 'code',
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content: element.textContent || '',
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});
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break;
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case 'ul':
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case 'ol':
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const listItems = Array.from(element.querySelectorAll('li'));
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const content = listItems.map(li => li.textContent || '').join('\n');
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blocks.push({
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id: `block-${Date.now()}-${Math.random().toString(36).substring(2, 9)}`,
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type: 'list',
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content: content,
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metadata: { listType: tagName === 'ol' ? 'ordered' : 'bullet' }
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});
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break;
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case 'hr':
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blocks.push({
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id: `block-${Date.now()}-${Math.random().toString(36).substring(2, 9)}`,
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type: 'divider',
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content: ' ',
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});
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break;
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default:
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// Process children for other elements
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element.childNodes.forEach(child => processNode(child));
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}
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}
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};
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doc.body.childNodes.forEach(node => processNode(node));
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return blocks;
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}
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static parseMarkdownToBlocks(markdown: string): IBlock[] {
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const lines = markdown.split('\n');
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const blocks: IBlock[] = [];
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let currentListItems: string[] = [];
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for (let i = 0; i < lines.length; i++) {
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const line = lines[i];
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if (line.startsWith('# ')) {
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blocks.push({
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id: `block-${Date.now()}-${Math.random().toString(36).substring(2, 9)}`,
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type: 'heading-1',
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content: line.substring(2),
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});
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} else if (line.startsWith('## ')) {
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blocks.push({
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id: `block-${Date.now()}-${Math.random().toString(36).substring(2, 9)}`,
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type: 'heading-2',
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content: line.substring(3),
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});
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} else if (line.startsWith('### ')) {
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blocks.push({
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id: `block-${Date.now()}-${Math.random().toString(36).substring(2, 9)}`,
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type: 'heading-3',
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content: line.substring(4),
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});
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} else if (line.startsWith('> ')) {
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blocks.push({
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id: `block-${Date.now()}-${Math.random().toString(36).substring(2, 9)}`,
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type: 'quote',
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content: line.substring(2),
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});
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} else if (line.startsWith('```')) {
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const codeLines: string[] = [];
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i++;
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while (i < lines.length && !lines[i].startsWith('```')) {
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codeLines.push(lines[i]);
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i++;
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}
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blocks.push({
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id: `block-${Date.now()}-${Math.random().toString(36).substring(2, 9)}`,
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type: 'code',
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content: codeLines.join('\n'),
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});
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} else if (line.match(/^(\*|-) /)) {
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currentListItems.push(line.substring(2));
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// Check if next line is not a list item
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if (i === lines.length - 1 || (!lines[i + 1].match(/^(\*|-) /))) {
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blocks.push({
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id: `block-${Date.now()}-${Math.random().toString(36).substring(2, 9)}`,
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type: 'list',
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content: currentListItems.join('\n'),
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metadata: { listType: 'bullet' }
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});
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currentListItems = [];
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}
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} else if (line.match(/^\d+\. /)) {
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currentListItems.push(line.replace(/^\d+\. /, ''));
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// Check if next line is not a numbered list item
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if (i === lines.length - 1 || (!lines[i + 1].match(/^\d+\. /))) {
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blocks.push({
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id: `block-${Date.now()}-${Math.random().toString(36).substring(2, 9)}`,
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type: 'list',
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content: currentListItems.join('\n'),
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metadata: { listType: 'ordered' }
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});
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currentListItems = [];
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}
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} else if (line === '---' || line === '***' || line === '___') {
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blocks.push({
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id: `block-${Date.now()}-${Math.random().toString(36).substring(2, 9)}`,
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type: 'divider',
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content: ' ',
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});
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} else if (line.trim()) {
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blocks.push({
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id: `block-${Date.now()}-${Math.random().toString(36).substring(2, 9)}`,
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type: 'paragraph',
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content: line,
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});
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}
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}
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return blocks;
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}
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}
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