src/ui/views/focus/widget_focus_manager.cc

   1 // Copyright (c) 2011 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/views/focus/widget_focus_manager.h"
   6
   7 #include "base/memory/singleton.h"
   8
   9 namespace views {
  10
  11 // WidgetFocusManager ----------------------------------------------------------
  12
  13 // static
  14 WidgetFocusManager* WidgetFocusManager::GetInstance() {
  15   return Singleton<WidgetFocusManager>::get();
  16 }
  17
  18 void WidgetFocusManager::AddFocusChangeListener(
  19     WidgetFocusChangeListener* listener) {
  20   focus_change_listeners_.AddObserver(listener);
  21 }
  22
  23 void WidgetFocusManager::RemoveFocusChangeListener(
  24     WidgetFocusChangeListener* listener) {
  25   focus_change_listeners_.RemoveObserver(listener);
  26 }
  27
  28 void WidgetFocusManager::OnWidgetFocusEvent(gfx::NativeView focused_before,
  29                                             gfx::NativeView focused_now) {
  30   if (enabled_ && focused_before != focused_now) {
  31     FOR_EACH_OBSERVER(WidgetFocusChangeListener, focus_change_listeners_,
  32                       OnNativeFocusChange(focused_before, focused_now));
  33   }
  34 }
  35
  36 WidgetFocusManager::WidgetFocusManager() : enabled_(true) {}
  37
  38 WidgetFocusManager::~WidgetFocusManager() {}
  39
  40 // AutoNativeNotificationDisabler ----------------------------------------------
  41
  42 AutoNativeNotificationDisabler::AutoNativeNotificationDisabler() {
  43   WidgetFocusManager::GetInstance()->DisableNotifications();
  44 }
  45
  46 AutoNativeNotificationDisabler::~AutoNativeNotificationDisabler() {
  47   WidgetFocusManager::GetInstance()->EnableNotifications();
  48 }
  49
  50 }  // namespace views