| // Copyright 2018 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| package org.chromium.chrome.browser.lifecycle; |
| |
| import org.chromium.chrome.browser.init.ActivityLifecycleDispatcher; |
| |
| /** |
| * Implement this interface and register in {@link ActivityLifecycleDispatcher} to receive |
| * onWindowFocusChange events. |
| */ |
| public interface WindowFocusChangedObserver extends LifecycleObserver { |
| |
| /** |
| * Called when the current Window of the activity gains or loses focus. |
| */ |
| void onWindowFocusChanged(boolean hasFocus); |
| } |