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