chrome/browser/ui/views/message_center/message_center_widget_delegate.h

   1 // Copyright 2013 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 CHROME_BROWSER_UI_VIEWS_MESSAGE_CENTER_MESSAGE_CENTER_WIDGET_DELEGATE_H_
   6 #define CHROME_BROWSER_UI_VIEWS_MESSAGE_CENTER_MESSAGE_CENTER_WIDGET_DELEGATE_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/compiler_specific.h"
  10 #include "base/memory/weak_ptr.h"
  11 #include "chrome/browser/ui/views/message_center/web_notification_tray.h"
  12 #include "ui/base/animation/animation_delegate.h"
  13 #include "ui/base/animation/slide_animation.h"
  14 #include "ui/gfx/point.h"
  15 #include "ui/gfx/rect.h"
  16 #include "ui/message_center/message_center.h"
  17 #include "ui/message_center/message_center_tray.h"
  18 #include "ui/message_center/message_center_tray_delegate.h"
  19 #include "ui/message_center/views/message_center_view.h"
  20 #include "ui/views/widget/widget_delegate.h"
  21 #include "ui/views/widget/widget_observer.h"
  22
  23 namespace ui {
  24 class SlideAnimation;
  25 class AnimationDelegate;
  26 }
  27
  28 namespace message_center {
  29
  30 enum Alignment {
  31   ALIGNMENT_TOP = 1 << 0,
  32   ALIGNMENT_LEFT = 1 << 1,
  33   ALIGNMENT_BOTTOM = 1 << 2,
  34   ALIGNMENT_RIGHT = 1 << 3,
  35   ALIGNMENT_NONE = 1 << 4,
  36 };
  37
  38 struct PositionInfo {
  39   int max_height;
  40
  41   // Alignment of the message center relative to the center of the screen.
  42   Alignment message_center_alignment;
  43
  44   // Alignment of the taskbar relative to the center of the screen.
  45   Alignment taskbar_alignment;
  46
  47   // Point relative to which message center is positioned.
  48   gfx::Point inital_anchor_point;
  49 };
  50
  51 class WebNotificationTray;
  52 class MessageCenterFrameView;
  53
  54 // MessageCenterWidgetDelegate is the message center's client view. It also
  55 // creates the message center widget and sets the notifications.
  56 //
  57 ////////////////////////////////////////////////////////////////////////////////
  58 class MessageCenterWidgetDelegate : public views::WidgetDelegate,
  59                                     public message_center::MessageCenterView,
  60                                     public views::WidgetObserver {
  61  public:
  62   MessageCenterWidgetDelegate(WebNotificationTray* tray,
  63                               MessageCenterTray* mc_tray,
  64                               bool initially_settings_visible,
  65                               const PositionInfo& pos_info);
  66   virtual ~MessageCenterWidgetDelegate();
  67
  68   // WidgetDelegate overrides:
  69   virtual View* GetContentsView() OVERRIDE;
  70   virtual views::NonClientFrameView* CreateNonClientFrameView(
  71       views::Widget* widget) OVERRIDE;
  72   virtual void DeleteDelegate() OVERRIDE;
  73   virtual views::Widget* GetWidget() OVERRIDE;
  74   virtual const views::Widget* GetWidget() const OVERRIDE;
  75
  76   // WidgetObserver overrides:
  77   virtual void OnWidgetActivationChanged(views::Widget* widget,
  78                                          bool active) OVERRIDE;
  79   virtual void OnWidgetClosing(views::Widget* widget) OVERRIDE;
  80
  81   // View overrides:
  82   virtual void PreferredSizeChanged() OVERRIDE;
  83   virtual gfx::Size GetPreferredSize() OVERRIDE;
  84   virtual gfx::Size GetMaximumSize() OVERRIDE;
  85   virtual int GetHeightForWidth(int width) OVERRIDE;
  86   virtual bool AcceleratorPressed(const ui::Accelerator& accelerator) OVERRIDE;
  87
  88  private:
  89   // Creates and initializes the message center widget.
  90   void InitWidget();
  91
  92   // Shifts the message center anchor point such that the mouse click point is
  93   // along the middle 60% of the width of the message center if taskbar is
  94   // horizontal aligned. If vertically aligned, ensures that mouse click point
  95   // is along the height of the message center (at least at a corner).
  96   gfx::Point GetCorrectedAnchor(gfx::Size calculated_size);
  97
  98   // Calculates the message center bounds using the position info and the
  99   // corrected anchor.
 100   gfx::Rect GetMessageCenterBounds();
 101
 102   // Insets of the message center border (set in MessageCenterFrameView).
 103   gfx::Insets border_insets_;
 104
 105   // Info necessary to calculate the estimated position of the message center.
 106   PositionInfo pos_info_;
 107
 108   WebNotificationTray* tray_;
 109 };
 110
 111 }  // namespace message_center
 112
 113 #endif  // CHROME_BROWSER_UI_VIEWS_MESSAGE_CENTER_MESSAGE_CENTER_WIDGET_DELEGATE_H_