support group rename and events

src/vs/workbench/common/editor/editorStacksModel.ts

@@ -53,6 +53,7 @@ export interface IEditorStacksModel {
 	onGroupClosed: Event<IEditorGroup>;
 	onGroupActivated: Event<IEditorGroup>;
 	onGroupMoved: Event<IEditorGroup>;
+	onGroupRenamed: Event<IEditorGroup>;
 
 	groups: IEditorGroup[];
 	activeGroup: IEditorGroup;
@@ -63,6 +64,8 @@ export interface IEditorStacksModel {
 
 	// openGroup(label: string): IEditorGroup;
 
+	// renameGroup(group: IEditorGroup, newLabel: string): void
+
 	// closeGroup(group: IEditorGroup): void;
 	// closeGroups(except?: IEditorGroup): void;
 
@@ -157,6 +160,10 @@ export class EditorGroup implements IEditorGroup {
 		return this._label;
 	}
 
+	public set label(label: string) {
+		this._label = label;
+	}
+
 	public get count(): number {
 		return this.editors.length;
 	}
@@ -547,6 +554,7 @@ export class EditorStacksModel implements IEditorStacksModel {
 	private _onGroupClosed: Emitter<EditorGroup>;
 	private _onGroupMoved: Emitter<EditorGroup>;
 	private _onGroupActivated: Emitter<EditorGroup>;
+	private _onGroupRenamed: Emitter<EditorGroup>;
 
 	constructor(
 		@IStorageService private storageService: IStorageService,
@@ -562,8 +570,9 @@ export class EditorStacksModel implements IEditorStacksModel {
 		this._onGroupClosed = new Emitter<EditorGroup>();
 		this._onGroupActivated = new Emitter<EditorGroup>();
 		this._onGroupMoved = new Emitter<EditorGroup>();
+		this._onGroupRenamed = new Emitter<EditorGroup>();
 
-		this.toDispose.push(this._onGroupOpened, this._onGroupClosed, this._onGroupActivated, this._onGroupMoved);
+		this.toDispose.push(this._onGroupOpened, this._onGroupClosed, this._onGroupActivated, this._onGroupMoved, this._onGroupRenamed);
 
 		this.load();
 		this.registerListeners();
@@ -589,6 +598,10 @@ export class EditorStacksModel implements IEditorStacksModel {
 		return this._onGroupMoved.event;
 	}
 
+	public get onGroupRenamed(): Event<EditorGroup> {
+		return this._onGroupRenamed.event;
+	}
+
 	public get groups(): EditorGroup[] {
 		return this._groups.slice(0);
 	}
@@ -625,6 +638,11 @@ export class EditorStacksModel implements IEditorStacksModel {
 		return group;
 	}
 
+	public renameGroup(group: EditorGroup, label: string): void {
+		group.label = label;
+		this._onGroupRenamed.fire(group);
+	}
+
 	public closeGroup(group: EditorGroup): void {
 		const index = this.indexOf(group);
 		if (index < 0) {

src/vs/workbench/test/common/editor/editorStacksModel.test.ts

@@ -32,6 +32,7 @@ interface ModelEvents {
 	activated: IEditorGroup[];
 	closed: IEditorGroup[];
 	moved: IEditorGroup[];
+	renamed: IEditorGroup[];
 }
 
 interface GroupEvents {
@@ -48,13 +49,15 @@ function modelListener(model: IEditorStacksModel): ModelEvents {
 		opened: [],
 		activated: [],
 		closed: [],
-		moved: []
+		moved: [],
+		renamed: []
 	};
 
 	model.onGroupOpened(g => modelEvents.opened.push(g));
 	model.onGroupActivated(g => modelEvents.activated.push(g));
 	model.onGroupClosed(g => modelEvents.closed.push(g));
 	model.onGroupMoved(g => modelEvents.moved.push(g));
+	model.onGroupRenamed(g => modelEvents.renamed.push(g));
 
 	return modelEvents;
 }
@@ -203,6 +206,19 @@ suite('Editor Stacks Model', () => {
 		const model = create();
 		const events = modelListener(model);
 
+		model.openGroup('first');
+		const group2 = model.openGroup('second');
+
+		model.renameGroup(group2, 'renamed');
+
+		assert.equal(group2.label, 'renamed');
+		assert.equal(group2, events.renamed[0]);
+	});
+
+	test('Groups - Rename Group', function () {
+		const model = create();
+		const events = modelListener(model);
+
 		const group1 = model.openGroup('first');
 		const group2 = model.openGroup('second');