ui/app_list/views/app_list_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_APP_LIST_VIEWS_APP_LIST_VIEW_H_
   6 #define UI_APP_LIST_VIEWS_APP_LIST_VIEW_H_
   7
   8 #include "base/callback.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "base/observer_list.h"
  11 #include "ui/app_list/app_list_export.h"
  12 #include "ui/app_list/app_list_view_delegate_observer.h"
  13 #include "ui/app_list/speech_ui_model_observer.h"
  14 #include "ui/views/bubble/bubble_delegate.h"
  15 #include "ui/views/widget/widget.h"
  16
  17 namespace base {
  18 class FilePath;
  19 }
  20
  21 namespace app_list {
  22 class ApplicationDragAndDropHost;
  23 class AppListMainView;
  24 class AppListModel;
  25 class AppListViewDelegate;
  26 class AppListViewObserver;
  27 class HideViewAnimationObserver;
  28 class PaginationModel;
  29 class SpeechView;
  30
  31 // AppListView is the top-level view and controller of app list UI. It creates
  32 // and hosts a AppsGridView and passes AppListModel to it for display.
  33 class APP_LIST_EXPORT AppListView : public views::BubbleDelegateView,
  34                                     public AppListViewDelegateObserver,
  35                                     public SpeechUIModelObserver {
  36  public:
  37   // Takes ownership of |delegate|.
  38   explicit AppListView(AppListViewDelegate* delegate);
  39   virtual ~AppListView();
  40
  41   // Initializes the widget and use a given |anchor| plus an |anchor_offset| for
  42   // positioning.
  43   void InitAsBubbleAttachedToAnchor(gfx::NativeView parent,
  44                                     int initial_apps_page,
  45                                     views::View* anchor,
  46                                     const gfx::Vector2d& anchor_offset,
  47                                     views::BubbleBorder::Arrow arrow,
  48                                     bool border_accepts_events);
  49
  50   // Initializes the widget and use a fixed |anchor_point_in_screen| for
  51   // positioning.
  52   void InitAsBubbleAtFixedLocation(gfx::NativeView parent,
  53                                    int initial_apps_page,
  54                                    const gfx::Point& anchor_point_in_screen,
  55                                    views::BubbleBorder::Arrow arrow,
  56                                    bool border_accepts_events);
  57
  58   void SetBubbleArrow(views::BubbleBorder::Arrow arrow);
  59
  60   void SetAnchorPoint(const gfx::Point& anchor_point);
  61
  62   // If |drag_and_drop_host| is not NULL it will be called upon drag and drop
  63   // operations outside the application list. This has to be called after
  64   // InitAsBubble was called since the app list object needs to exist so that
  65   // it can set the host.
  66   void SetDragAndDropHostOfCurrentAppList(
  67       ApplicationDragAndDropHost* drag_and_drop_host);
  68
  69   // Shows the UI when there are no pending icon loads. Otherwise, starts a
  70   // timer to show the UI when a maximum allowed wait time has expired.
  71   void ShowWhenReady();
  72
  73   void Close();
  74
  75   void UpdateBounds();
  76
  77   // Returns true if the app list should be centered and in landscape mode.
  78   bool ShouldCenterWindow() const;
  79
  80   // Overridden from views::View:
  81   virtual gfx::Size GetPreferredSize() const OVERRIDE;
  82   virtual void Paint(gfx::Canvas* canvas,
  83                      const views::CullSet& cull_set) OVERRIDE;
  84   virtual void OnThemeChanged() OVERRIDE;
  85
  86   // WidgetDelegate overrides:
  87   virtual bool ShouldHandleSystemCommands() const OVERRIDE;
  88
  89   // Overridden from AppListViewDelegateObserver:
  90   virtual void OnProfilesChanged() OVERRIDE;
  91
  92   void Prerender();
  93
  94   void SetProfileByPath(const base::FilePath& profile_path);
  95
  96   void AddObserver(AppListViewObserver* observer);
  97   void RemoveObserver(AppListViewObserver* observer);
  98
  99   // Set a callback to be called the next time any app list paints.
 100   void SetNextPaintCallback(const base::Closure& callback);
 101
 102 #if defined(OS_WIN)
 103   HWND GetHWND() const;
 104 #endif
 105
 106   AppListMainView* app_list_main_view() { return app_list_main_view_; }
 107
 108   // Gets the PaginationModel owned by this view's apps grid.
 109   PaginationModel* GetAppsPaginationModel();
 110
 111  private:
 112   void InitAsBubbleInternal(gfx::NativeView parent,
 113                             int initial_apps_page,
 114                             views::BubbleBorder::Arrow arrow,
 115                             bool border_accepts_events,
 116                             const gfx::Vector2d& anchor_offset);
 117
 118   // Overridden from views::BubbleDelegateView:
 119   virtual void OnBeforeBubbleWidgetInit(
 120       views::Widget::InitParams* params,
 121       views::Widget* widget) const OVERRIDE;
 122
 123   // Overridden from views::WidgetDelegateView:
 124   virtual views::View* GetInitiallyFocusedView() OVERRIDE;
 125   virtual gfx::ImageSkia GetWindowIcon() OVERRIDE;
 126   virtual bool WidgetHasHitTestMask() const OVERRIDE;
 127   virtual void GetWidgetHitTestMask(gfx::Path* mask) const OVERRIDE;
 128
 129   // Overridden from views::View:
 130   virtual bool AcceleratorPressed(const ui::Accelerator& accelerator) OVERRIDE;
 131   virtual void Layout() OVERRIDE;
 132   virtual void SchedulePaintInRect(const gfx::Rect& rect) OVERRIDE;
 133
 134   // Overridden from views::WidgetObserver:
 135   virtual void OnWidgetDestroying(views::Widget* widget) OVERRIDE;
 136   virtual void OnWidgetVisibilityChanged(
 137       views::Widget* widget, bool visible) OVERRIDE;
 138   virtual void OnWidgetActivationChanged(
 139       views::Widget* widget, bool active) OVERRIDE;
 140
 141   // Overridden from SpeechUIModelObserver:
 142   virtual void OnSpeechRecognitionStateChanged(
 143       SpeechRecognitionState new_state) OVERRIDE;
 144
 145   scoped_ptr<AppListViewDelegate> delegate_;
 146
 147   AppListMainView* app_list_main_view_;
 148   SpeechView* speech_view_;
 149
 150   ObserverList<AppListViewObserver> observers_;
 151   scoped_ptr<HideViewAnimationObserver> animation_observer_;
 152
 153   // For UMA and testing. If non-null, triggered when the app list is painted.
 154   base::Closure next_paint_callback_;
 155
 156   DISALLOW_COPY_AND_ASSIGN(AppListView);
 157 };
 158
 159 }  // namespace app_list
 160
 161 #endif  // UI_APP_LIST_VIEWS_APP_LIST_VIEW_H_