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      1 // Copyright (c) 2012 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/client/focus_client.h"
      6 
      7 #include "ui/aura/window_event_dispatcher.h"
      8 #include "ui/aura/window_property.h"
      9 
     10 DECLARE_EXPORTED_WINDOW_PROPERTY_TYPE(AURA_EXPORT, aura::Window*)
     11 DECLARE_WINDOW_PROPERTY_TYPE(aura::client::FocusClient*)
     12 
     13 namespace aura {
     14 namespace client {
     15 
     16 DEFINE_WINDOW_PROPERTY_KEY(FocusClient*, kRootWindowFocusClientKey, NULL);
     17 
     18 void SetFocusClient(Window* root_window, FocusClient* client) {
     19   DCHECK_EQ(root_window->GetRootWindow(), root_window);
     20   root_window->SetProperty(kRootWindowFocusClientKey, client);
     21 }
     22 
     23 FocusClient* GetFocusClient(Window* window) {
     24   return GetFocusClient(static_cast<const Window*>(window));
     25 }
     26 
     27 FocusClient* GetFocusClient(const Window* window) {
     28   const Window* root_window = window->GetRootWindow();
     29   return root_window ?
     30       root_window->GetProperty(kRootWindowFocusClientKey) : NULL;
     31 }
     32 
     33 }  // namespace client
     34 }  // namespace aura
     35