feat: add ability to copy and paste workspace comments

core/blockly.ts

@@ -379,6 +379,18 @@ WorkspaceSvg.prototype.newBlock = function (
   return new BlockSvg(this, prototypeName, opt_id);
 };
 
+Workspace.prototype.newComment = function (
+  id?: string,
+): comments.WorkspaceComment {
+  return new comments.WorkspaceComment(this, id);
+};
+
+WorkspaceSvg.prototype.newComment = function (
+  id?: string,
+): comments.RenderedWorkspaceComment {
+  return new comments.RenderedWorkspaceComment(this, id);
+};
+
 WorkspaceSvg.newTrashcan = function (workspace: WorkspaceSvg): Trashcan {
   return new Trashcan(workspace);
 };

core/clipboard/workspace_comment_paster.ts

@@ -8,38 +8,87 @@ import {IPaster} from '../interfaces/i_paster.js';
 import {ICopyData} from '../interfaces/i_copyable.js';
 import {Coordinate} from '../utils/coordinate.js';
 import {WorkspaceSvg} from '../workspace_svg.js';
-import {WorkspaceCommentSvg} from '../workspace_comment_svg.js';
 import * as registry from './registry.js';
+import * as commentSerialiation from '../serialization/workspace_comments.js';
+import * as eventUtils from '../events/utils.js';
+import * as common from '../common.js';
+import {RenderedWorkspaceComment} from '../comments/rendered_workspace_comment.js';
 
 export class WorkspaceCommentPaster
-  implements IPaster<WorkspaceCommentCopyData, WorkspaceCommentSvg>
+  implements IPaster<WorkspaceCommentCopyData, RenderedWorkspaceComment>
 {
   static TYPE = 'workspace-comment';
 
   paste(
     copyData: WorkspaceCommentCopyData,
     workspace: WorkspaceSvg,
     coordinate?: Coordinate,
-  ): WorkspaceCommentSvg {
+  ): RenderedWorkspaceComment | null {
     const state = copyData.commentState;
+
     if (coordinate) {
-      state.setAttribute('x', `${coordinate.x}`);
-      state.setAttribute('y', `${coordinate.y}`);
-    } else {
-      const x = parseInt(state.getAttribute('x') ?? '0') + 50;
-      const y = parseInt(state.getAttribute('y') ?? '0') + 50;
-      state.setAttribute('x', `${x}`);
-      state.setAttribute('y', `${y}`);
+      state['x'] = coordinate.x;
+      state['y'] = coordinate.y;
+    }
+
+    eventUtils.disable();
+    let comment;
+    try {
+      comment = commentSerialiation.append(
+        state,
+        workspace,
+      ) as RenderedWorkspaceComment;
+      moveCommentToNotConflict(comment);
+    } finally {
+      eventUtils.enable();
     }
-    return WorkspaceCommentSvg.fromXmlRendered(
-      copyData.commentState,
-      workspace,
+
+    if (!comment) return null;
+
+    if (eventUtils.isEnabled()) {
+      eventUtils.fire(new (eventUtils.get(eventUtils.COMMENT_CREATE))(comment));
+    }
+    common.setSelected(comment);
+    return comment;
+  }
+}
+
+function moveCommentToNotConflict(comment: RenderedWorkspaceComment) {
+  const workspace = comment.workspace;
+  const translateDistance = 30;
+  const coord = comment.getRelativeToSurfaceXY();
+  const offset = new Coordinate(0, 0);
+  // getRelativeToSurfaceXY is really expensive, so we want to cache this.
+  const otherCoords = workspace
+    .getTopComments(false)
+    .filter((otherComment) => otherComment.id != comment.id)
+    .map((c) => c.getRelativeToSurfaceXY());
+
+  while (
+    commentOverlapsOtherExactly(Coordinate.sum(coord, offset), otherCoords)
+  ) {
+    offset.translate(
+      workspace.RTL ? -translateDistance : translateDistance,
+      translateDistance,
     );
   }
+
+  comment.moveTo(Coordinate.sum(coord, offset));
+}
+
+function commentOverlapsOtherExactly(
+  coord: Coordinate,
+  otherCoords: Coordinate[],
+): boolean {
+  return otherCoords.some(
+    (otherCoord) =>
+      Math.abs(otherCoord.x - coord.x) <= 1 &&
+      Math.abs(otherCoord.y - coord.y) <= 1,
+  );
 }
 
 export interface WorkspaceCommentCopyData extends ICopyData {
-  commentState: Element;
+  commentState: commentSerialiation.State;
 }
 
 registry.register(WorkspaceCommentPaster.TYPE, new WorkspaceCommentPaster());

core/comments/rendered_workspace_comment.ts

@@ -19,6 +19,12 @@ import * as browserEvents from '../browser_events.js';
 import * as common from '../common.js';
 import {ISelectable} from '../interfaces/i_selectable.js';
 import {IDeletable} from '../interfaces/i_deletable.js';
+import {ICopyable} from '../interfaces/i_copyable.js';
+import * as commentSerialization from '../serialization/workspace_comments.js';
+import {
+  WorkspaceCommentPaster,
+  WorkspaceCommentCopyData,
+} from '../clipboard/workspace_comment_paster.js';
 
 export class RenderedWorkspaceComment
   extends WorkspaceComment
@@ -27,7 +33,8 @@ export class RenderedWorkspaceComment
     IRenderedElement,
     IDraggable,
     ISelectable,
-    IDeletable
+    IDeletable,
+    ICopyable<WorkspaceCommentCopyData>
 {
   /** The class encompassing the svg elements making up the workspace comment. */
   private view: CommentView;
@@ -219,4 +226,17 @@ export class RenderedWorkspaceComment
   unselect(): void {
     dom.removeClass(this.getSvgRoot(), 'blocklySelected');
   }
+
+  /**
+   * Returns a JSON serializable representation of this comment's state that
+   * can be used for pasting.
+   */
+  toCopyData(): WorkspaceCommentCopyData | null {
+    return {
+      paster: WorkspaceCommentPaster.TYPE,
+      commentState: commentSerialization.save(this, {
+        addCoordinates: true,
+      }),
+    };
+  }
 }

core/serialization/workspace_comments.ts

@@ -6,10 +6,8 @@
 
 import {ISerializer} from '../interfaces/i_serializer.js';
 import {Workspace} from '../workspace.js';
-import {WorkspaceSvg} from '../workspace_svg.js';
 import * as priorities from './priorities.js';
-import {WorkspaceComment} from '../comments/workspace_comment.js';
-import {RenderedWorkspaceComment} from '../comments/rendered_workspace_comment.js';
+import type {WorkspaceComment} from '../comments/workspace_comment.js';
 import * as eventUtils from '../events/utils.js';
 import {Coordinate} from '../utils/coordinate.js';
 import * as serializationRegistry from './registry.js';
@@ -70,10 +68,7 @@ export function append(
   const prevRecordUndo = eventUtils.getRecordUndo();
   eventUtils.setRecordUndo(recordUndo);
 
-  const comment =
-    workspace instanceof WorkspaceSvg
-      ? new RenderedWorkspaceComment(workspace, state.id)
-      : new WorkspaceComment(workspace, state.id);
+  const comment = workspace.newComment(state.id);
 
   if (state.text !== undefined) comment.setText(state.text);
   if (state.x !== undefined || state.y !== undefined) {

core/workspace.ts

@@ -30,7 +30,8 @@ import * as math from './utils/math.js';
 import type * as toolbox from './utils/toolbox.js';
 import {VariableMap} from './variable_map.js';
 import type {VariableModel} from './variable_model.js';
-import type {WorkspaceComment} from './workspace_comment.js';
+import type {WorkspaceComment as OldWorkspaceComment} from './workspace_comment.js';
+import {WorkspaceComment} from './comments/workspace_comment.js';
 import {IProcedureMap} from './interfaces/i_procedure_map.js';
 import {ObservableProcedureMap} from './observable_procedure_map.js';
 
@@ -100,8 +101,8 @@ export class Workspace implements IASTNodeLocation {
   connectionChecker: IConnectionChecker;
 
   private readonly topBlocks: Block[] = [];
-  private readonly topComments: WorkspaceComment[] = [];
-  private readonly commentDB = new Map<string, WorkspaceComment>();
+  private readonly topComments: OldWorkspaceComment[] = [];
+  private readonly commentDB = new Map<string, OldWorkspaceComment>();
   private readonly listeners: Function[] = [];
   protected undoStack_: Abstract[] = [];
   protected redoStack_: Abstract[] = [];
@@ -168,8 +169,8 @@ export class Workspace implements IASTNodeLocation {
    *     a's index.
    */
   private sortObjects_(
-    a: Block | WorkspaceComment,
-    b: Block | WorkspaceComment,
+    a: Block | OldWorkspaceComment,
+    b: Block | OldWorkspaceComment,
   ): number {
     const offset =
       Math.sin(math.toRadians(Workspace.SCAN_ANGLE)) * (this.RTL ? -1 : 1);
@@ -266,7 +267,7 @@ export class Workspace implements IASTNodeLocation {
    * @param comment comment to add.
    * @internal
    */
-  addTopComment(comment: WorkspaceComment) {
+  addTopComment(comment: OldWorkspaceComment) {
     this.topComments.push(comment);
 
     // Note: If the comment database starts to hold block comments, this may
@@ -287,7 +288,7 @@ export class Workspace implements IASTNodeLocation {
    * @param comment comment to remove.
    * @internal
    */
-  removeTopComment(comment: WorkspaceComment) {
+  removeTopComment(comment: OldWorkspaceComment) {
     if (!arrayUtils.removeElem(this.topComments, comment)) {
       throw Error(
         "Comment not present in workspace's list of top-most " + 'comments.',
@@ -306,9 +307,9 @@ export class Workspace implements IASTNodeLocation {
    * @returns The top-level comment objects.
    * @internal
    */
-  getTopComments(ordered = false): WorkspaceComment[] {
+  getTopComments(ordered = false): OldWorkspaceComment[] {
     // Copy the topComments list.
-    const comments = new Array<WorkspaceComment>().concat(this.topComments);
+    const comments = new Array<OldWorkspaceComment>().concat(this.topComments);
     if (ordered && comments.length > 1) {
       comments.sort(this.sortObjects_.bind(this));
     }
@@ -515,6 +516,20 @@ export class Workspace implements IASTNodeLocation {
         'monkey-patched in by blockly.ts',
     );
   }
+
+  /**
+   * Obtain a newly created comment.
+   *
+   * @param id Optional ID.  Use this ID if provided, otherwise create a new
+   *     ID.
+   * @returns The created comment.
+   */
+  newComment(id?: string): WorkspaceComment {
+    throw new Error(
+      'The implementation of newComment should be ' +
+        'monkey-patched in by blockly.ts',
+    );
+  }
   /* eslint-enable */
 
   /**
@@ -736,7 +751,7 @@ export class Workspace implements IASTNodeLocation {
    * @returns The sought after comment, or null if not found.
    * @internal
    */
-  getCommentById(id: string): WorkspaceComment | null {
+  getCommentById(id: string): OldWorkspaceComment | null {
     return this.commentDB.get(id) ?? null;
   }
 

core/workspace_svg.ts

@@ -68,8 +68,9 @@ import * as VariablesDynamic from './variables_dynamic.js';
 import * as WidgetDiv from './widgetdiv.js';
 import {Workspace} from './workspace.js';
 import {WorkspaceAudio} from './workspace_audio.js';
-import {WorkspaceComment} from './workspace_comment.js';
-import {WorkspaceCommentSvg} from './workspace_comment_svg.js';
+import {WorkspaceComment as OldWorkspaceComment} from './workspace_comment.js';
+import {WorkspaceCommentSvg as OldWorkspaceCommentSvg} from './workspace_comment_svg.js';
+import {WorkspaceComment} from './comments/workspace_comment.js';
 import {ZoomControls} from './zoom_controls.js';
 import {ContextMenuOption} from './contextmenu_registry.js';
 import * as renderManagement from './render_management.js';
@@ -1395,6 +1396,20 @@ export class WorkspaceSvg extends Workspace implements IASTNodeLocationSvg {
         'monkey-patched in by blockly.ts',
     );
   }
+
+  /**
+   * Obtain a newly created comment.
+   *
+   * @param id Optional ID.  Use this ID if provided, otherwise create a new
+   *     ID.
+   * @returns The created comment.
+   */
+  newComment(id?: string): WorkspaceComment {
+    throw new Error(
+      'The implementation of newComment should be ' +
+        'monkey-patched in by blockly.ts',
+    );
+  }
   /* eslint-enable */
 
   /**
@@ -2128,8 +2143,8 @@ export class WorkspaceSvg extends Workspace implements IASTNodeLocationSvg {
    *
    * @param comment comment to add.
    */
-  override addTopComment(comment: WorkspaceComment) {
-    this.addTopBoundedElement(comment as WorkspaceCommentSvg);
+  override addTopComment(comment: OldWorkspaceComment) {
+    this.addTopBoundedElement(comment as OldWorkspaceCommentSvg);
     super.addTopComment(comment);
   }
 
@@ -2138,8 +2153,8 @@ export class WorkspaceSvg extends Workspace implements IASTNodeLocationSvg {
    *
    * @param comment comment to remove.
    */
-  override removeTopComment(comment: WorkspaceComment) {
-    this.removeTopBoundedElement(comment as WorkspaceCommentSvg);
+  override removeTopComment(comment: OldWorkspaceComment) {
+    this.removeTopBoundedElement(comment as OldWorkspaceCommentSvg);
     super.removeTopComment(comment);
   }