ui/aura/window_destruction_observer.cc

   1 // Copyright 2013 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_destruction_observer.h"
   6
   7 namespace aura {
   8
   9 WindowDestructionObserver::WindowDestructionObserver(Window* window)
  10     : window_(window), destroyed_(false) {
  11   DCHECK(window_);
  12   window_->AddObserver(this);
  13 }
  14
  15 WindowDestructionObserver::~WindowDestructionObserver() {
  16   if (!destroyed_)
  17     window_->RemoveObserver(this);
  18 }
  19
  20 void WindowDestructionObserver::OnWindowDestroyed(Window* window) {
  21   if (window == window_)
  22     destroyed_ = true;
  23 }
  24
  25 } // namespace aura