Pause close timer of notification while it's active

ui/message_center/views/toast_contents_view.h

 // Copyright (c) 2013 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.
 
 #ifndef UI_MESSAGE_CENTER_VIEWS_TOAST_CONTENTS_VIEW_H_
 #define UI_MESSAGE_CENTER_VIEWS_TOAST_CONTENTS_VIEW_H_
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "ui/gfx/animation/animation_delegate.h"
 #include "ui/gfx/geometry/point.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/geometry/size.h"
 #include "ui/message_center/message_center_export.h"
 #include "ui/message_center/views/message_center_controller.h"
 #include "ui/views/widget/widget_delegate.h"
+#include "ui/views/widget/widget_observer.h"
 
 namespace gfx {
 class Animation;
 class SlideAnimation;
 }
 
 namespace views {
 class View;
 }
 
 namespace message_center {
 
 namespace test {
 class MessagePopupCollectionTest;
 }
 
 class MessagePopupCollection;
 class MessageView;
 class Notification;
 class PopupAlignmentDelegate;
 
 // The widget host for a popup. Also implements MessageCenterController
 // which delegates over to MessagePopupCollection, but takes care about
 // checking the weakref since MessagePopupCollection may disappear before
 // widget/views are closed/destructed.
 class MESSAGE_CENTER_EXPORT ToastContentsView
     : public views::WidgetDelegateView,
+      public views::WidgetObserver,
       public MessageCenterController,
       public gfx::AnimationDelegate {
  public:
   static const char kViewClassName[];
 
   // Computes the size of a toast assuming it will host the given view.
   static gfx::Size GetToastSizeForView(const views::View* view);
 
   ToastContentsView(const std::string& notification_id,
                     PopupAlignmentDelegate* alignment_delegate,
@@ skipping 55 matching lines @@
   // Overridden from gfx::AnimationDelegate:
   void AnimationProgressed(const gfx::Animation* animation) override;
   void AnimationEnded(const gfx::Animation* animation) override;
   void AnimationCanceled(const gfx::Animation* animation) override;
 
   // Overridden from views::WidgetDelegate:
   void WindowClosing() override;
   void OnDisplayChanged() override;
   void OnWorkAreaChanged() override;
 
+  // Overridden from views::WidgetObserver:
+  void OnWidgetActivationChanged(views::Widget* widget, bool active) override;
+
   // Recalculates preferred size from underlying view and notifies about it.
   void UpdatePreferredSize();
 
   // Initialization and update.
   void CreateWidget(PopupAlignmentDelegate* alignment_delegate);
 
   // Immediately moves the toast without any sort of delay or animation.
   void SetBoundsInstantly(gfx::Rect new_bounds);
 
   // Given the bounds of a toast on the screen, compute the bounds for that
@@ skipping 23 matching lines @@
 
   gfx::Point origin_;
   gfx::Size preferred_size_;
 
   DISALLOW_COPY_AND_ASSIGN(ToastContentsView);
 };
 
 }  // namespace message_center
 
 #endif // UI_MESSAGE_CENTER_VIEWS_TOAST_CONTENTS_VIEW_H_