fix: comment icon interface re serialization (#7964)

* fix: comment icon interface re serialization

* chore: fix test

core/icons/comment_icon.ts

@@ -349,10 +349,18 @@ export class CommentIcon extends Icon implements IHasBubble, ISerializable {
   }
 }
 
+/** The save state format for a comment icon. */
 export interface CommentState {
+  /** The text of the comment. */
   text?: string;
+
+  /** True if the comment is open, false otherwise. */
   pinned?: boolean;
+
+  /** The height of the comment bubble. */
   height?: number;
+
+  /** The width of the comment bubble. */
   width?: number;
 }
 

core/interfaces/i_comment_icon.ts

@@ -4,26 +4,33 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-import {IconType} from '../icons.js';
+import {IconType} from '../icons/icon_types.js';
+import {CommentState} from '../icons/comment_icon.js';
 import {IIcon, isIcon} from './i_icon.js';
 import {Size} from '../utils/size.js';
 import {IHasBubble, hasBubble} from './i_has_bubble.js';
+import {ISerializable, isSerializable} from './i_serializable.js';
 
-export interface ICommentIcon extends IIcon, IHasBubble {
+export interface ICommentIcon extends IIcon, IHasBubble, ISerializable {
   setText(text: string): void;
 
   getText(): string;
 
   setBubbleSize(size: Size): void;
 
   getBubbleSize(): Size;
+
+  saveState(): CommentState;
+
+  loadState(state: CommentState): void;
 }
 
 /** Checks whether the given object is an ICommentIcon. */
 export function isCommentIcon(obj: Object): obj is ICommentIcon {
   return (
     isIcon(obj) &&
     hasBubble(obj) &&
+    isSerializable(obj) &&
     (obj as any)['setText'] !== undefined &&
     (obj as any)['getText'] !== undefined &&
     (obj as any)['setBubbleSize'] !== undefined &&

tests/mocha/block_test.js

@@ -1392,6 +1392,12 @@ suite('Blocks', function () {
         }
 
         setBubbleVisible() {}
+
+        saveState() {
+          return {};
+        }
+
+        loadState() {}
       }
 
       setup(function () {