Supporting shrinking/enlarging for notifications

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/gfx/native_widget_types.h"
 #include "ui/message_center/views/message_center_controller.h"
 #include "ui/views/widget/widget_delegate.h"
 
 namespace gfx {
 class Animation;
 class SlideAnimation;
 }
 
 namespace views {
 class View;
 }
 
 namespace message_center {
 
+namespace test {
+class MessagePopupCollectionTest;
+}
+
 class MessagePopupCollection;
 class MessageView;
 class Notification;
 
 // 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 ToastContentsView : public views::WidgetDelegateView,
                           public MessageCenterController,
@@ skipping 22 matching lines @@
   // an animation. Once animation finishes, closes the widget.
   void CloseWithAnimation();
 
   void SetBoundsWithAnimation(gfx::Rect new_bounds);
 
   // Origin and bounds are not 'instant', but rather 'current stable values',
   // there could be animation in progress that targets these values.
   gfx::Point origin() { return origin_; }
   gfx::Rect bounds() { return gfx::Rect(origin_, preferred_size_); }
 
-  const std::string& id() { return id_; }
+  const std::string& id() const { return id_; }
 
   // Overridden from views::View:
   void OnMouseEntered(const ui::MouseEvent& event) override;
   void OnMouseExited(const ui::MouseEvent& event) override;
   void Layout() override;
   gfx::Size GetPreferredSize() const override;
   void GetAccessibleState(ui::AXViewState* state) override;
 
  private:
+  friend class test::MessagePopupCollectionTest;
+
   // Overridden from MessageCenterController:
   void ClickOnNotification(const std::string& notification_id) override;
   void RemoveNotification(const std::string& notification_id,
                           bool by_user) override;
   std::unique_ptr<ui::MenuModel> CreateMenuModel(
       const NotifierId& notifier_id,
       const base::string16& display_source) override;
   bool HasClickedListener(const std::string& notification_id) override;
   void ClickOnNotificationButton(const std::string& notification_id,
                                  int button_index) override;
   void ClickOnSettingsButton(const std::string& notification_id) override;
 
   // 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:
   views::View* GetContentsView() override;
   void WindowClosing() override;
   void OnDisplayChanged() override;
   void OnWorkAreaChanged() override;
 
+  // Recalculates preferred size from underlying view and notifies about it.
+  void UpdatePreferredSize();
+
   // Initialization and update.
   void CreateWidget(gfx::NativeView parent);
 
   // 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 bouds for that
   // toast in 'closed' state. The 'closed' state is used as origin/destination
   // in reveal/closing animations.
   gfx::Rect GetClosedToastBounds(gfx::Rect bounds);
@@ skipping 20 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_