ui/message_center/views/message_list_view.h

   1 // Copyright (c) 2015 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_MESSAGE_LIST_VIEW_H_
   6 #define UI_MESSAGE_CENTER_VIEWS_MESSAGE_LIST_VIEW_H_
   7
   8 #include <list>
   9 #include <set>
  10
  11 #include "ui/compositor/paint_context.h"
  12 #include "ui/gfx/geometry/rect.h"
  13 #include "ui/gfx/geometry/size.h"
  14 #include "ui/message_center/notification.h"
  15 #include "ui/views/animation/bounds_animator_observer.h"
  16 #include "ui/views/view.h"
  17
  18 namespace gfx {
  19 class Canvas;
  20 }
  21
  22 namespace ui {
  23 class Layer;
  24 }
  25
  26 namespace views {
  27 class BoundsAnimator;
  28 }
  29
  30 namespace message_center {
  31
  32 class MessageCenterView;
  33 class MessageView;
  34
  35 // Displays a list of messages for rich notifications. Functions as an array of
  36 // MessageViews and animates them on transitions. It also supports
  37 // repositioning.
  38 class MessageListView : public views::View,
  39                         public views::BoundsAnimatorObserver {
  40  public:
  41   explicit MessageListView(MessageCenterView* message_center_view,
  42                            bool top_down);
  43   ~MessageListView() override;
  44
  45   void AddNotificationAt(MessageView* view, int i);
  46   void RemoveNotification(MessageView* view);
  47   void UpdateNotification(MessageView* view, const Notification& notification);
  48   void SetRepositionTarget(const gfx::Rect& target_rect);
  49   void ResetRepositionSession();
  50   void ClearAllNotifications(const gfx::Rect& visible_scroll_rect);
  51
  52  protected:
  53   // Overridden from views::View.
  54   void Layout() override;
  55   gfx::Size GetPreferredSize() const override;
  56   int GetHeightForWidth(int width) const override;
  57   void PaintChildren(const ui::PaintContext& context) override;
  58   void ReorderChildLayers(ui::Layer* parent_layer) override;
  59
  60   // Overridden from views::BoundsAnimatorObserver.
  61   void OnBoundsAnimatorProgressed(views::BoundsAnimator* animator) override;
  62   void OnBoundsAnimatorDone(views::BoundsAnimator* animator) override;
  63
  64  private:
  65   bool IsValidChild(const views::View* child) const;
  66   void DoUpdateIfPossible();
  67
  68   // Animates all notifications below target upwards to align with the top of
  69   // the last closed notification.
  70   void AnimateNotificationsBelowTarget();
  71   // Animates all notifications above target downwards to align with the top of
  72   // the last closed notification.
  73   void AnimateNotificationsAboveTarget();
  74
  75   // Schedules animation for a child to the specified position. Returns false
  76   // if |child| will disappear after the animation.
  77   bool AnimateChild(views::View* child, int top, int height);
  78
  79   // Animate clearing one notification.
  80   void AnimateClearingOneNotification();
  81   MessageCenterView* message_center_view() const {
  82     return message_center_view_;
  83   }
  84
  85   MessageCenterView* message_center_view_;  // Weak reference.
  86   // The top position of the reposition target rectangle.
  87   int reposition_top_;
  88   int fixed_height_;
  89   bool has_deferred_task_;
  90   bool clear_all_started_;
  91   bool top_down_;
  92   std::set<views::View*> adding_views_;
  93   std::set<views::View*> deleting_views_;
  94   std::set<views::View*> deleted_when_done_;
  95   std::list<views::View*> clearing_all_views_;
  96   scoped_ptr<views::BoundsAnimator> animator_;
  97   base::WeakPtrFactory<MessageListView> weak_ptr_factory_;
  98
  99   DISALLOW_COPY_AND_ASSIGN(MessageListView);
 100 };
 101
 102 }  // namespace message_center
 103 #endif  // UI_MESSAGE_CENTER_VIEWS_MESSAGE_LIST_VIEW_H_