diff --git a/src/vs/test/utils/servicesTestUtils.ts b/src/vs/test/utils/servicesTestUtils.ts
index bcb8b63c1a14211ce08654c6aeb2c7b5d8276394..fbcf18e6902983e3b2ce86bb314b8ce3e6cafc31 100644
--- a/src/vs/test/utils/servicesTestUtils.ts
+++ b/src/vs/test/utils/servicesTestUtils.ts
@@ -14,7 +14,7 @@ import * as paths from 'vs/base/common/paths';
 import URI from 'vs/base/common/uri';
 import { ITelemetryService, NullTelemetryService } from 'vs/platform/telemetry/common/telemetry';
 import { Storage, InMemoryLocalStorage } from 'vs/workbench/node/storage';
-import { EditorInputEvent, IEditorGroup, ConfirmResult } from 'vs/workbench/common/editor';
+import { IEditorGroup, ConfirmResult } from 'vs/workbench/common/editor';
 import Event, { Emitter } from 'vs/base/common/event';
 import Severity from 'vs/base/common/severity';
 import { IConfigurationService, getConfigurationValue, IConfigurationValue } from 'vs/platform/configuration/common/configuration';
@@ -317,14 +317,12 @@ export class TestEditorGroupService implements IEditorGroupService {
 	private stacksModel: EditorStacksModel;
 
 	private _onEditorsChanged: Emitter<void>;
-	private _onEditorOpening: Emitter<EditorInputEvent>;
 	private _onEditorOpenFail: Emitter<IEditorInput>;
 	private _onEditorsMoved: Emitter<void>;
 
 	constructor(callback?: (method: string) => void) {
 		this._onEditorsMoved = new Emitter<void>();
 		this._onEditorsChanged = new Emitter<void>();
-		this._onEditorOpening = new Emitter<EditorInputEvent>();
 		this._onEditorOpenFail = new Emitter<IEditorInput>();
 
 		let services = new ServiceCollection();
@@ -348,10 +346,6 @@ export class TestEditorGroupService implements IEditorGroupService {
 		return this._onEditorsChanged.event;
 	}
 
-	public get onEditorOpening(): Event<EditorInputEvent> {
-		return this._onEditorOpening.event;
-	}
-
 	public get onEditorOpenFail(): Event<IEditorInput> {
 		return this._onEditorOpenFail.event;
 	}
diff --git a/src/vs/workbench/browser/parts/editor/editorPart.ts b/src/vs/workbench/browser/parts/editor/editorPart.ts
index 098bcce4dc15f92a5d93b7b4d282a2dbea1590ab..7ecba1cbe254dd6d3809b808af47f2ff056a0cfb 100644
--- a/src/vs/workbench/browser/parts/editor/editorPart.ts
+++ b/src/vs/workbench/browser/parts/editor/editorPart.ts
@@ -20,7 +20,7 @@ import { toErrorMessage } from 'vs/base/common/errorMessage';
 import { Scope as MementoScope } from 'vs/workbench/common/memento';
 import { Part } from 'vs/workbench/browser/part';
 import { BaseEditor, EditorDescriptor } from 'vs/workbench/browser/parts/editor/baseEditor';
-import { IEditorRegistry, Extensions as EditorExtensions, EditorInput, EditorOptions, ConfirmResult, EditorInputEvent, IWorkbenchEditorConfiguration, IEditorDescriptor, TextEditorOptions } from 'vs/workbench/common/editor';
+import { IEditorRegistry, Extensions as EditorExtensions, EditorInput, EditorOptions, ConfirmResult, IWorkbenchEditorConfiguration, IEditorDescriptor, TextEditorOptions } from 'vs/workbench/common/editor';
 import { SideBySideEditorControl, Rochade, ISideBySideEditorControl, ProgressState } from 'vs/workbench/browser/parts/editor/sideBySideEditorControl';
 import { WorkbenchProgressService } from 'vs/workbench/services/progress/browser/progressService';
 import { GroupArrangement } from 'vs/workbench/services/group/common/groupService';
@@ -85,7 +85,6 @@ export class EditorPart extends Part implements IEditorPart, IEditorGroupService
 	private previewEditors: boolean;
 
 	private _onEditorsChanged: Emitter<void>;
-	private _onEditorOpening: Emitter<EditorInputEvent>;
 	private _onEditorsMoved: Emitter<void>;
 	private _onEditorOpenFail: Emitter<EditorInput>;
 
@@ -110,7 +109,6 @@ export class EditorPart extends Part implements IEditorPart, IEditorGroupService
 		super(id);
 
 		this._onEditorsChanged = new Emitter<void>();
-		this._onEditorOpening = new Emitter<EditorInputEvent>();
 		this._onEditorsMoved = new Emitter<void>();
 		this._onEditorOpenFail = new Emitter<EditorInput>();
 
@@ -171,10 +169,6 @@ export class EditorPart extends Part implements IEditorPart, IEditorGroupService
 		return this._onEditorsChanged.event;
 	}
 
-	public get onEditorOpening(): Event<EditorInputEvent> {
-		return this._onEditorOpening.event;
-	}
-
 	public get onEditorsMoved(): Event<void> {
 		return this._onEditorsMoved.event;
 	}
@@ -203,13 +197,6 @@ export class EditorPart extends Part implements IEditorPart, IEditorGroupService
 			return TPromise.as<BaseEditor>(null);
 		}
 
-		// Emit early open event to allow for veto
-		const event = new EditorInputEvent(input);
-		this._onEditorOpening.fire(event);
-		if (event.isPrevented()) {
-			return TPromise.as<BaseEditor>(null);
-		}
-
 		// We need an editor descriptor for the input
 		const descriptor = Registry.as<IEditorRegistry>(EditorExtensions.Editors).getEditor(input);
 		if (!descriptor) {
@@ -1137,7 +1124,6 @@ export class EditorPart extends Part implements IEditorPart, IEditorGroupService
 
 		// Emitters
 		this._onEditorsChanged.dispose();
-		this._onEditorOpening.dispose();
 		this._onEditorsMoved.dispose();
 		this._onEditorOpenFail.dispose();
 
diff --git a/src/vs/workbench/common/editor.ts b/src/vs/workbench/common/editor.ts
index a93f44aed7c47cca0e2981001ca23504eb2c4b94..27acb0ed8759f98ffe94957fe37ddb953fd41731 100644
--- a/src/vs/workbench/common/editor.ts
+++ b/src/vs/workbench/common/editor.ts
@@ -11,7 +11,6 @@ import URI from 'vs/base/common/uri';
 import { IEditor, ICommonCodeEditor, IEditorViewState, IEditorOptions as ICodeEditorOptions } from 'vs/editor/common/editorCommon';
 import { IEditorInput, IEditorModel, IEditorOptions, ITextEditorOptions, IResourceInput, Position } from 'vs/platform/editor/common/editor';
 import { IWorkspaceContextService } from 'vs/platform/workspace/common/workspace';
-import { Event as BaseEvent } from 'vs/base/common/events';
 import { IEditorGroupService } from 'vs/workbench/services/group/common/groupService';
 import { SyncDescriptor, AsyncDescriptor } from 'vs/platform/instantiation/common/descriptors';
 import { IInstantiationService, IConstructorSignature0 } from 'vs/platform/instantiation/common/instantiation';
@@ -278,29 +277,6 @@ export abstract class EditorInput implements IEditorInput {
 	}
 }
 
-export class EditorInputEvent extends BaseEvent {
-	private _editorInput: IEditorInput;
-	private prevented: boolean;
-
-	constructor(editorInput: IEditorInput) {
-		super(null);
-
-		this._editorInput = editorInput;
-	}
-
-	public get editorInput(): IEditorInput {
-		return this._editorInput;
-	}
-
-	public prevent(): void {
-		this.prevented = true;
-	}
-
-	public isPrevented(): boolean {
-		return this.prevented;
-	}
-}
-
 export enum EncodingMode {
 
 	/**
diff --git a/src/vs/workbench/services/group/common/groupService.ts b/src/vs/workbench/services/group/common/groupService.ts
index 67dd31d0b646fbfb2fb910e9f54e22703f42b80d..f71a46f7f1bac6a171be04876b9eeb480897c879 100644
--- a/src/vs/workbench/services/group/common/groupService.ts
+++ b/src/vs/workbench/services/group/common/groupService.ts
@@ -9,7 +9,6 @@ import { createDecorator, ServiceIdentifier } from 'vs/platform/instantiation/co
 import { Position, IEditorInput } from 'vs/platform/editor/common/editor';
 import { IEditorStacksModel, IEditorGroup } from 'vs/workbench/common/editor';
 import Event from 'vs/base/common/event';
-import { EditorInputEvent } from 'vs/workbench/common/editor';
 
 export enum GroupArrangement {
 	MINIMIZE_OTHERS,
@@ -30,11 +29,6 @@ export interface IEditorGroupService {
 	 */
 	onEditorsChanged: Event<void>;
 
-	/**
-	 * Emitted when an editor is about to open.
-	 */
-	onEditorOpening: Event<EditorInputEvent>;
-
 	/**
 	 * Emitted when opening an editor fails.
 	 */