model: positionOfGroup()

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

@@ -14,6 +14,7 @@ import {IWorkspaceContextService} from 'vs/workbench/services/workspace/common/c
 import {dispose, IDisposable} from 'vs/base/common/lifecycle';
 import {IEditorRegistry, Extensions} from 'vs/workbench/browser/parts/editor/baseEditor';
 import {Registry} from 'vs/platform/platform';
+import {Position} from 'vs/platform/editor/common/editor';
 
 export interface IEditorGroup {
 
@@ -63,6 +64,8 @@ export interface IEditorStacksModel {
 
 	getGroup(id: GroupIdentifier): IEditorGroup;
 
+	positionOfGroup(group: IEditorGroup): Position;
+
 	toString(): string;
 
 	// --- Modifying:
@@ -775,6 +778,10 @@ export class EditorStacksModel implements IEditorStacksModel {
 		return this._groups.indexOf(group);
 	}
 
+	public positionOfGroup(group: EditorGroup): Position {
+		return this.indexOf(group);
+	}
+
 	private save(): void {
 		let activeIndex = this.indexOf(this._activeGroup);
 		let activeIsEmptyGroup = false;

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

@@ -16,6 +16,7 @@ import {ILifecycleService} from 'vs/platform/lifecycle/common/lifecycle';
 import {IWorkspaceContextService} from 'vs/workbench/services/workspace/common/contextService';
 import {IEditorRegistry, Extensions as EditorExtensions, IEditorInputFactory} from 'vs/workbench/browser/parts/editor/baseEditor';
 import {Registry} from 'vs/platform/platform';
+import {Position} from 'vs/platform/editor/common/editor';
 import {IInstantiationService} from 'vs/platform/instantiation/common/instantiation';
 
 function create(): EditorStacksModel {
@@ -217,6 +218,18 @@ suite('Editor Stacks Model', () => {
 		assert.equal(group2, events.renamed[0]);
 	});
 
+	test('Groups - Position of Group', function () {
+		const model = create();
+
+		const group1 = model.openGroup('first');
+		const group2 = model.openGroup('second');
+		const group3 = model.openGroup('third');
+
+		assert.equal(Position.LEFT, model.positionOfGroup(group1));
+		assert.equal(Position.CENTER, model.positionOfGroup(group2));
+		assert.equal(Position.RIGHT, model.positionOfGroup(group3));
+	});
+
 	test('Groups - Rename Group', function () {
 		const model = create();
 		const events = modelListener(model);