f5c7b24d81
Replaces the always-on split Edit|Preview (page shown twice) with a rendered preview by default + an Edit toggle that swaps the pane to a textarea in place. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
77 lines
2.3 KiB
JavaScript
77 lines
2.3 KiB
JavaScript
// Single-pane Markdown view with an Edit/Preview toggle.
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// - Default: rendered HTML (marked → DOMPurify).
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// - Click "Edit" to replace the pane in place with a raw-markdown textarea + Save.
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// - Click "Preview" to re-render and go back to read mode.
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// save(value) is caller-supplied and returns a promise resolving to the updated row.
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import { marked } from '../vendor/marked.esm.js';
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import DOMPurify from '../vendor/purify.es.mjs';
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import { el } from '../dom.js';
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marked.setOptions({ gfm: true, breaks: true });
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export function markdownEditor({ initial = '', save }) {
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let editing = false;
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const ta = el('textarea', {
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style: {
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width: '100%', minHeight: '420px', resize: 'vertical',
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fontFamily: 'var(--font-mono)', fontSize: '13px', lineHeight: '1.5'
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}
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});
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ta.value = initial;
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const preview = el('div', { class: 'md-preview' });
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function rerender() {
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preview.innerHTML = DOMPurify.sanitize(marked.parse(ta.value)); // sanitized
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}
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rerender();
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// The pane shows EITHER the preview (read) or the textarea (edit).
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const pane = el('div', {}, preview);
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const stamp = el('span', { class: 'muted', style: { fontSize: '11px' } }, '');
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const saveBtn = el('button', {
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class: 'primary',
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style: { display: 'none' },
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onclick: async () => {
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saveBtn.disabled = true;
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try {
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const updated = await save(ta.value);
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stamp.textContent = updated?.updated_at
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? 'Saved ' + new Date(updated.updated_at).toLocaleString()
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: 'Saved';
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} catch (e) {
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stamp.textContent = 'Save failed: ' + e.message;
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} finally {
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saveBtn.disabled = false;
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}
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}
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}, 'Save');
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const toggle = el('button', {
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onclick: () => {
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editing = !editing;
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if (editing) {
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pane.replaceChild(ta, preview);
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ta.focus();
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toggle.textContent = 'Preview';
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saveBtn.style.display = '';
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} else {
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rerender();
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pane.replaceChild(preview, ta);
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toggle.textContent = 'Edit';
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saveBtn.style.display = 'none';
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}
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}
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}, 'Edit');
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return el('div', {},
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el('div', { style: { display: 'flex', gap: '12px', alignItems: 'center', marginBottom: '8px' } },
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toggle, saveBtn, stamp
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),
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el('div', { class: 'card' }, pane)
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);
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}
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