Move knowledge about MessageCenter out of MessageView.

ui/message_center/views/message_view.h

 // Copyright (c) 2012 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_MESSAGE_VIEW_H_
 #define UI_MESSAGE_CENTER_VIEWS_MESSAGE_VIEW_H_
 
 #include "base/strings/string16.h"
 #include "ui/gfx/insets.h"
 #include "ui/message_center/message_center_export.h"
@@ skipping 11 matching lines @@
 class MessageCenter;
 class MessageCenterTray;
 class MessageViewContextMenuController;
 
 // Individual notifications constants.
 const int kPaddingBetweenItems = 10;
 const int kPaddingHorizontal = 18;
 const int kWebNotificationButtonWidth = 32;
 const int kWebNotificationIconSize = 40;
 
+// Types of MessageViews. They correspond to the set of derived classes.
+enum MessageViewTypes {
+  NOTIFICATION_VIEW,  // Directly represents a single notification.
+  GROUP_VIEW          // A group of notifications from the same source.
+};
+
 // An abstract class that forms the basis of a view for a notification entry.
 class MESSAGE_CENTER_EXPORT MessageView : public views::SlideOutView,
                                           public views::ButtonListener {
  public:
-  MessageView(const Notification& notification,
-              MessageCenter* message_center,
-              MessageCenterTray* tray);
+  MessageView(const string16& display_source);
   virtual ~MessageView();
 
+  // Overrided by derived classes.
+  virtual MessageViewTypes GetType() = 0;
+  virtual void ClickOnNotification() = 0;
+  virtual void RemoveNotification(bool by_user) = 0;
+  virtual void DisableNotificationsFromThisSource() = 0;
+  virtual void ShowNotifierSettingsBubble() = 0;
+
   // Returns the insets for the shadow it will have for rich notification.
   static gfx::Insets GetShadowInsets();
 
   // Creates a shadow around the notification.
   void CreateShadowBorder();
 
   bool IsCloseButtonFocused();
   void RequestFocusOnCloseButton();
 
   void set_accessible_name(const string16& name) { accessible_name_ = name; }
 
   // Overridden from views::View:
   virtual void GetAccessibleState(ui::AccessibleViewState* state) OVERRIDE;
   virtual bool OnMousePressed(const ui::MouseEvent& event) OVERRIDE;
   virtual bool OnKeyPressed(const ui::KeyEvent& event) OVERRIDE;
   virtual bool OnKeyReleased(const ui::KeyEvent& event) OVERRIDE;
   virtual void OnPaintFocusBorder(gfx::Canvas* canvas) OVERRIDE;
 
   // Overridden from ui::EventHandler:
   virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE;
 
   // Overridden from ButtonListener:
   virtual void ButtonPressed(views::Button* sender,
                              const ui::Event& event) OVERRIDE;
 
-  const std::string& notification_id() { return notification_id_; }
   void set_scroller(views::ScrollView* scroller) { scroller_ = scroller; }
 
  protected:
-  MessageView();
-
   // Overridden from views::SlideOutView:
   virtual void OnSlideOut() OVERRIDE;
 
-  MessageCenter* message_center() { return message_center_; }
   views::ImageButton* close_button() { return close_button_.get(); }
   views::ScrollView* scroller() { return scroller_; }
 
  private:
-  MessageCenter* message_center_;  // Weak reference.
-  std::string notification_id_;
-
   scoped_ptr<MessageViewContextMenuController> context_menu_controller_;
   scoped_ptr<views::ImageButton> close_button_;
   views::ScrollView* scroller_;
 
   string16 accessible_name_;
 
   DISALLOW_COPY_AND_ASSIGN(MessageView);
 };
 
 }  // namespace message_center
 
 #endif // UI_MESSAGE_CENTER_VIEWS_MESSAGE_VIEW_H_