feat: add comment functionality for snippets with modal interface

index.html

@@ -62,7 +62,11 @@
             <div id="vis"></div>
         </div>
     </div>
-
+    <div id="comment-modal-background" class="comment-modal-background"></div>
+    <div id="comment-modal" class="comment-modal">
+        <textarea id="comment-textarea" placeholder="Add your comment here..."></textarea>
+        <button class="button" id="comment-modal-save">Save</button>
+    </div>
     <script type="module" src="src/main.js"></script>
 </body>
 

src/SnippetManager.js

@@ -15,7 +15,7 @@ export class SnippetManager {
         this.isDraftVersion = false;
         this.readOnlyMode = false;
 
-        this.snippets = this.storageManager.loadSnippets();
+        this.snippets = this.loadSnippets();
         this.uiManager.renderSnippetList(this.snippets, this.currentSnippetId);
     }
 
@@ -172,6 +172,14 @@ export class SnippetManager {
         this.loadSnippet(newSnippet.id);
     }
 
+    loadSnippets() {
+        const storedSnippets = this.storageManager.loadSnippets();
+        return storedSnippets.map(snippet => ({
+            ...snippet,
+            comment: snippet.comment || ''
+        }));
+    }
+
     saveSnippetsAndUpdateUI() {
         this.storageManager.saveSnippets(this.snippets);
         this.updateUI();

src/UIManager.js

@@ -13,6 +13,8 @@ export class UIManager {
         document.getElementById('export-snippets').onclick = () => this.snippetManager.storageManager.exportSnippets();
         document.getElementById('import-snippets').onclick = () => document.getElementById('import-file').click();
         document.getElementById('import-file').onchange = (e) => this.handleImport(e);
+        document.getElementById('comment-modal-save').onclick = () => this.saveComment();
+        document.getElementById('comment-modal-background').onclick = () => this.closeCommentModal();
     }
 
     async handleImport(e) {
@@ -65,6 +67,15 @@ export class UIManager {
                 e.stopPropagation();
                 this.snippetManager.duplicateSnippet(snippet.id);
             }));
+
+            const commentButton = this.createButton('💬', 'comment-snippet', (e) => {
+                e.stopPropagation();
+                this.openCommentModal(snippet.id);
+            });
+            if (snippet.comment && snippet.comment.trim() !== '') {
+                commentButton.classList.add('has-comment');
+            }
+            buttonsDiv.appendChild(commentButton);
             
             div.appendChild(buttonsDiv);
             container.appendChild(div);
@@ -79,6 +90,39 @@ export class UIManager {
         return button;
     }
 
+    openCommentModal(snippetId) {
+        const snippet = this.snippetManager.snippets.find(s => s.id === snippetId);
+        if (!snippet) return;
+
+        const commentTextarea = document.getElementById('comment-textarea');
+        commentTextarea.value = snippet.comment || '';
+        document.getElementById('comment-modal').style.display = 'block';
+        document.getElementById('comment-modal-background').style.display = 'block';
+        this.currentCommentSnippetId = snippetId;
+    }
+
+    saveComment() {
+        const commentTextarea = document.getElementById('comment-textarea');
+        const snippet = this.snippetManager.snippets.find(s => s.id === this.currentCommentSnippetId);
+        if (snippet) {
+            snippet.comment = commentTextarea.value;
+            this.snippetManager.saveSnippetsAndUpdateUI();
+        }
+        document.getElementById('comment-modal').style.display = 'none';
+        document.getElementById('comment-modal-background').style.display = 'none';
+    }
+
+    closeCommentModal() {
+        const commentTextarea = document.getElementById('comment-textarea');
+        const snippet = this.snippetManager.snippets.find(s => s.id === this.currentCommentSnippetId);
+        if (snippet) {
+            snippet.comment = commentTextarea.value;
+            this.snippetManager.saveSnippetsAndUpdateUI();
+        }
+        document.getElementById('comment-modal').style.display = 'none';
+        document.getElementById('comment-modal-background').style.display = 'none';
+    }
+
     updateSaveButton(hasUnsavedChanges) {
         const saveButton = document.getElementById('save-snippet');
         saveButton.disabled = !hasUnsavedChanges;

src/styles.css

@@ -267,4 +267,64 @@
 
 .snippet-item:hover .duplicate-snippet {
     opacity: 0.8;
+}
+
+.comment-modal {
+    display: none;
+    position: fixed;
+    top: 50%;
+    left: 50%;
+    width: 50%;
+    height: 50%;
+    transform: translate(-50%, -50%);
+    background: white;
+    padding: 1rem;
+    border: 1px solid #e0e0e0;
+    border-radius: 4px;
+    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
+    z-index: 1001;
+}
+
+.comment-modal textarea {
+    width: 100%;
+    height: calc(100% - 2rem);
+    margin-bottom: 1rem;
+}
+
+.comment-modal .button {
+    display: block;
+    margin: 0 auto;
+}
+
+.comment-modal-background {
+    display: none;
+    position: fixed;
+    top: 0;
+    left: 0;
+    width: 100%;
+    height: 100%;
+    background: rgba(0, 0, 0, 0.5);
+    z-index: 1000;
+}
+
+.comment-snippet {
+    opacity: 0.4;
+    font-size: 14px;
+    padding: 2px 4px;
+    background: none;
+    border: none;
+    cursor: pointer;
+    min-width: 24px;
+}
+
+.comment-snippet.has-comment {
+    opacity: 1;
+}
+
+.comment-snippet:hover {
+    opacity: 1;
+}
+
+.snippet-item:hover .comment-snippet {
+    opacity: 0.8;
 }