fix: extract comment identifier to constant

Author: maribethb

core/comments/comment_editor.ts

@@ -13,6 +13,12 @@ import {Size} from '../utils/size.js';
 import {Svg} from '../utils/svg.js';
 import {WorkspaceSvg} from '../workspace_svg.js';
 
+/**
+ * String added to the ID of a workspace comment to identify
+ * the focusable node for the comment editor.
+ */
+export const COMMENT_EDITOR_FOCUS_IDENTIFIER = '_comment_textarea_';
+
 /** The part of a comment that can be typed into. */
 export class CommentEditor implements IFocusableNode {
   id?: string;
@@ -52,7 +58,7 @@ export class CommentEditor implements IFocusableNode {
     this.foreignObject.appendChild(body);
 
     if (commentId) {
-      this.id = commentId + '_comment_textarea_';
+      this.id = commentId + COMMENT_EDITOR_FOCUS_IDENTIFIER;
       this.textArea.setAttribute('id', this.id);
     }
 

core/workspace_svg.ts

@@ -22,6 +22,7 @@ import type {Block} from './block.js';
 import type {BlockSvg} from './block_svg.js';
 import type {BlocklyOptions} from './blockly_options.js';
 import * as browserEvents from './browser_events.js';
+import {COMMENT_EDITOR_FOCUS_IDENTIFIER} from './comments/comment_editor.js';
 import {RenderedWorkspaceComment} from './comments/rendered_workspace_comment.js';
 import {WorkspaceComment} from './comments/workspace_comment.js';
 import * as common from './common.js';
@@ -2779,7 +2780,7 @@ export class WorkspaceSvg
 
     // Search for a specific workspace comment editor
     // (only if id seems like it is one).
-    const commentEditorIndicator = id.indexOf('_comment_textarea_');
+    const commentEditorIndicator = id.indexOf(COMMENT_EDITOR_FOCUS_IDENTIFIER);
     if (commentEditorIndicator !== -1) {
       const commentId = id.substring(0, commentEditorIndicator);
       const comment = this.searchForWorkspaceComment(commentId);