1// Copyright 2014 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#include "ui/aura/window_observer.h" 6 7#include "base/logging.h" 8#include "ui/aura/window.h" 9 10namespace aura { 11 12WindowObserver::WindowObserver() : observing_(0) { 13} 14 15WindowObserver::~WindowObserver() { 16 // TODO(flackr): Remove this check and observing_ counter when the cause of 17 // http://crbug.com/365364 is discovered. 18 CHECK_EQ(0, observing_); 19} 20 21void WindowObserver::OnObservingWindow(aura::Window* window) { 22 if (!window->HasObserver(this)) 23 observing_++; 24} 25 26void WindowObserver::OnUnobservingWindow(aura::Window* window) { 27 if (window->HasObserver(this)) 28 observing_--; 29} 30 31} // namespace aura 32