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 test {
  22 class AppListViewTestApi;
  23 }
  24
  25 namespace views {
  26 class ImageView;
  27 }
  28
  29 namespace app_list {
  30 class ApplicationDragAndDropHost;
  31 class AppListMainView;
  32 class AppListModel;
  33 class AppListViewDelegate;
  34 class AppListViewObserver;
  35 class HideViewAnimationObserver;
  36 class PaginationModel;
  37 class SpeechView;
  38
  39 // AppListView is the top-level view and controller of app list UI. It creates
  40 // and hosts a AppsGridView and passes AppListModel to it for display.
  41 class APP_LIST_EXPORT AppListView : public views::BubbleDelegateView,
  42                                     public AppListViewDelegateObserver,
  43                                     public SpeechUIModelObserver {
  44  public:
  45   // Takes ownership of |delegate|.
  46   explicit AppListView(AppListViewDelegate* delegate);
  47   virtual ~AppListView();
  48
  49   // Initializes the widget and use a given |anchor| plus an |anchor_offset| for
  50   // positioning.
  51   void InitAsBubbleAttachedToAnchor(gfx::NativeView parent,
  52                                     int initial_apps_page,
  53                                     views::View* anchor,
  54                                     const gfx::Vector2d& anchor_offset,
  55                                     views::BubbleBorder::Arrow arrow,
  56                                     bool border_accepts_events);
  57
  58   // Initializes the widget and use a fixed |anchor_point_in_screen| for
  59   // positioning.
  60   void InitAsBubbleAtFixedLocation(gfx::NativeView parent,
  61                                    int initial_apps_page,
  62                                    const gfx::Point& anchor_point_in_screen,
  63                                    views::BubbleBorder::Arrow arrow,
  64                                    bool border_accepts_events);
  65
  66   void SetBubbleArrow(views::BubbleBorder::Arrow arrow);
  67
  68   void SetAnchorPoint(const gfx::Point& anchor_point);
  69
  70   // If |drag_and_drop_host| is not NULL it will be called upon drag and drop
  71   // operations outside the application list. This has to be called after
  72   // InitAsBubble was called since the app list object needs to exist so that
  73   // it can set the host.
  74   void SetDragAndDropHostOfCurrentAppList(
  75       ApplicationDragAndDropHost* drag_and_drop_host);
  76
  77   // Shows the UI when there are no pending icon loads. Otherwise, starts a
  78   // timer to show the UI when a maximum allowed wait time has expired.
  79   void ShowWhenReady();
  80
  81   void Close();
  82
  83   void UpdateBounds();
  84
  85   // Enables/disables a semi-transparent overlay over the app list (good for
  86   // hiding the app list when a modal dialog is being shown).
  87   void SetAppListOverlayVisible(bool visible);
  88
  89   // Returns true if the app list should be centered and in landscape mode.
  90   bool ShouldCenterWindow() const;
  91
  92   // Overridden from views::View:
  93   virtual gfx::Size GetPreferredSize() const OVERRIDE;
  94   virtual void Paint(gfx::Canvas* canvas,
  95                      const views::CullSet& cull_set) OVERRIDE;
  96   virtual void OnThemeChanged() OVERRIDE;
  97
  98   // WidgetDelegate overrides:
  99   virtual bool ShouldHandleSystemCommands() const OVERRIDE;
 100
 101   // Overridden from AppListViewDelegateObserver:
 102   virtual void OnProfilesChanged() OVERRIDE;
 103
 104   void Prerender();
 105
 106   void SetProfileByPath(const base::FilePath& profile_path);
 107
 108   void AddObserver(AppListViewObserver* observer);
 109   void RemoveObserver(AppListViewObserver* observer);
 110
 111   // Set a callback to be called the next time any app list paints.
 112   void SetNextPaintCallback(const base::Closure& callback);
 113
 114 #if defined(OS_WIN)
 115   HWND GetHWND() const;
 116 #endif
 117
 118   AppListMainView* app_list_main_view() { return app_list_main_view_; }
 119
 120   // Gets the PaginationModel owned by this view's apps grid.
 121   PaginationModel* GetAppsPaginationModel();
 122
 123  private:
 124   friend class ::test::AppListViewTestApi;
 125
 126   void InitAsBubbleInternal(gfx::NativeView parent,
 127                             int initial_apps_page,
 128                             views::BubbleBorder::Arrow arrow,
 129                             bool border_accepts_events,
 130                             const gfx::Vector2d& anchor_offset);
 131
 132   // Overridden from views::BubbleDelegateView:
 133   virtual void OnBeforeBubbleWidgetInit(
 134       views::Widget::InitParams* params,
 135       views::Widget* widget) const OVERRIDE;
 136
 137   // Overridden from views::WidgetDelegateView:
 138   virtual views::View* GetInitiallyFocusedView() OVERRIDE;
 139   virtual gfx::ImageSkia GetWindowIcon() OVERRIDE;
 140   virtual bool WidgetHasHitTestMask() const OVERRIDE;
 141   virtual void GetWidgetHitTestMask(gfx::Path* mask) const OVERRIDE;
 142
 143   // Overridden from views::View:
 144   virtual bool AcceleratorPressed(const ui::Accelerator& accelerator) OVERRIDE;
 145   virtual void Layout() OVERRIDE;
 146   virtual void SchedulePaintInRect(const gfx::Rect& rect) OVERRIDE;
 147
 148   // Overridden from views::WidgetObserver:
 149   virtual void OnWidgetDestroying(views::Widget* widget) OVERRIDE;
 150   virtual void OnWidgetVisibilityChanged(
 151       views::Widget* widget, bool visible) OVERRIDE;
 152   virtual void OnWidgetActivationChanged(
 153       views::Widget* widget, bool active) OVERRIDE;
 154
 155   // Overridden from SpeechUIModelObserver:
 156   virtual void OnSpeechRecognitionStateChanged(
 157       SpeechRecognitionState new_state) OVERRIDE;
 158
 159   scoped_ptr<AppListViewDelegate> delegate_;
 160
 161   AppListMainView* app_list_main_view_;
 162   SpeechView* speech_view_;
 163
 164   // The red "experimental" banner for the experimental app list.
 165   views::ImageView* experimental_banner_view_;
 166
 167   // A semi-transparent white overlay that covers the app list while dialogs are
 168   // open.
 169   views::View* overlay_view_;
 170
 171   ObserverList<AppListViewObserver> observers_;
 172   scoped_ptr<HideViewAnimationObserver> animation_observer_;
 173
 174   // For UMA and testing. If non-null, triggered when the app list is painted.
 175   base::Closure next_paint_callback_;
 176
 177   DISALLOW_COPY_AND_ASSIGN(AppListView);
 178 };
 179
 180 }  // namespace app_list
 181
 182 #endif  // UI_APP_LIST_VIEWS_APP_LIST_VIEW_H_