ui/message_center/views/notification_view.h

   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_