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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 #ifndef UI_MESSAGE_CENTER_VIEWS_NOTIFICATION_VIEW_H_
      6 #define UI_MESSAGE_CENTER_VIEWS_NOTIFICATION_VIEW_H_
      7 
      8 #include <vector>
      9 
     10 #include "ui/message_center/message_center_export.h"
     11 #include "ui/message_center/views/message_view.h"
     12 
     13 namespace views {
     14 class ProgressBar;
     15 }
     16 
     17 namespace message_center {
     18 
     19 class BoundedLabel;
     20 class MessageCenter;
     21 
     22 // View that displays all current types of notification (web, basic, image, and
     23 // list). Future notification types may be handled by other classes, in which
     24 // case instances of those classes would be returned by the Create() factory
     25 // method below.
     26 class MESSAGE_CENTER_EXPORT NotificationView : public MessageView {
     27  public:
     28   // Creates appropriate MessageViews for notifications. Those currently are
     29   // always NotificationView or MessageSimpleView instances but in the future
     30   // may be instances of other classes, with the class depending on the
     31   // notification type. A notification is top level if it needs to be rendered
     32   // outside the browser window. No custom shadows are created for top level
     33   // notifications on Linux with Aura.
     34   static MessageView* Create(const Notification& notification,
     35                              MessageCenter* message_center,
     36                              MessageCenterTray* tray,
     37                              bool expanded,
     38                              bool top_level);
     39 
     40   virtual ~NotificationView();
     41 
     42   // Overridden from views::View:
     43   virtual gfx::Size GetPreferredSize() OVERRIDE;
     44   virtual int GetHeightForWidth(int width) OVERRIDE;
     45   virtual void Layout() OVERRIDE;
     46   virtual void OnFocus() OVERRIDE;
     47   virtual void ScrollRectToVisible(const gfx::Rect& rect) OVERRIDE;
     48   virtual views::View* GetEventHandlerForPoint(
     49       const gfx::Point& point) OVERRIDE;
     50   virtual gfx::NativeCursor GetCursor(const ui::MouseEvent& event) OVERRIDE;
     51 
     52   // Overridden from MessageView:
     53   virtual void ButtonPressed(views::Button* sender,
     54                              const ui::Event& event) OVERRIDE;
     55 
     56  protected:
     57   NotificationView(const Notification& notification,
     58                    MessageCenter* message_center,
     59                    MessageCenterTray* tray,
     60                    bool expanded);
     61 
     62  private:
     63   bool IsExpansionNeeded(int width);
     64   bool IsMessageExpansionNeeded(int width);
     65   int GetMessageLineLimit(int width);
     66   int GetMessageLines(int width, int limit);
     67   int GetMessageHeight(int width, int limit);
     68 
     69   // Weak references to NotificationView descendants owned by their parents.
     70   views::View* background_view_;
     71   views::View* top_view_;
     72   BoundedLabel* title_view_;
     73   BoundedLabel* message_view_;
     74   std::vector<views::View*> item_views_;
     75   views::View* icon_view_;
     76   views::View* bottom_view_;
     77   views::View* image_view_;
     78   views::ProgressBar* progress_bar_view_;
     79   std::vector<views::View*> action_buttons_;
     80 
     81   DISALLOW_COPY_AND_ASSIGN(NotificationView);
     82 };
     83 
     84 }  // namespace message_center
     85 
     86 #endif // UI_MESSAGE_CENTER_VIEWS_NOTIFICATION_VIEW_H_
     87