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feat(preview): add checkbox support in Markdown rendering #35

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Merged
mcgivrer merged 1 commit into from
Feb 28, 2026
Merged

feat(preview): add checkbox support in Markdown rendering #35

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34 changes: 34 additions & 0 deletions src/main/java/ui/PreviewPanel.java
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Original file line number Diff line number Diff line change
Expand Up @@ -244,6 +244,9 @@ private void updatePreview(String markdown, boolean addToHistory) {

String html = htmlRenderer.render(markdownParser.parse(body));

// ── Checkboxes : convertir [ ] et [x] en éléments checkbox HTML
html = processCheckboxes(html);

// ── Images : injecter les attributs width/height
if (!imageSizes.isEmpty()) {
html = applyImageSizes(html, imageSizes);
Expand Down Expand Up @@ -298,6 +301,11 @@ private void updatePreview(String markdown, boolean addToHistory) {
th, td { border: 1px solid #888; padding: 6px 12px; text-align: left; }
th { background: rgba(128,128,128,0.15); font-weight: bold; }
tr:nth-child(even) { background: rgba(128,128,128,0.06); }
/* Checkboxes (task list) */
input[type="checkbox"] { width: 1.1em; height: 1.1em; margin-right: 0.4em;
vertical-align: middle; cursor: default;
accent-color: #0078d7; }
li:has(input[type="checkbox"]) { list-style: none; margin-left: -1.2em; }
/* Front Matter metadata */
.front-matter { background: rgba(128,128,128,0.08); border: 1px solid rgba(128,128,128,0.25);
border-radius: 6px; padding: 0.6em 1em; margin-bottom: 1.2em;
Expand Down Expand Up @@ -397,6 +405,32 @@ function renderMath(el) {
this.currentHtml = htmlPage;
}

/**
* Convertit les marqueurs de checkbox Markdown ([ ] et [x]) en éléments HTML checkbox.
*
* <p>Patterns reconnus :</p>
* <ul>
* <li>{@code [ ]} → checkbox non cochée</li>
* <li>{@code [x]} ou {@code [X]} → checkbox cochée</li>
* </ul>
*
* @param html le HTML généré par Flexmark
* @return le HTML avec les checkboxes converties
*/
private String processCheckboxes(String html) {
// Remplacer [ ] par une checkbox non cochée
html = html.replaceAll(
"\\[ \\]",
"<input type=\"checkbox\" disabled>"
);
// Remplacer [x] ou [X] par une checkbox cochée
html = html.replaceAll(
"\\[[xX]\\]",
"<input type=\"checkbox\" checked disabled>"
);
return html;
}

/**
* Remplace les blocs {@code <pre><code class="language-plantuml">...}
* par des balises {@code <img>} (serveur en ligne) ou par des placeholders
Expand Down