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 SearchBoxView;
  38 class SpeechView;
  39
  40 // AppListView is the top-level view and controller of app list UI. It creates
  41 // and hosts a AppsGridView and passes AppListModel to it for display.
  42 class APP_LIST_EXPORT AppListView : public views::BubbleDelegateView,
  43                                     public AppListViewDelegateObserver,
  44                                     public SpeechUIModelObserver {
  45  public:
  46   // Does not take ownership of |delegate|.
  47   explicit AppListView(AppListViewDelegate* delegate);
  48   ~AppListView() override;
  49
  50   // Initializes the widget and use a given |anchor| plus an |anchor_offset| for
  51   // positioning.
  52   void InitAsBubbleAttachedToAnchor(gfx::NativeView parent,
  53                                     int initial_apps_page,
  54                                     views::View* anchor,
  55                                     const gfx::Vector2d& anchor_offset,
  56                                     views::BubbleBorder::Arrow arrow,
  57                                     bool border_accepts_events);
  58
  59   // Initializes the widget and use a fixed |anchor_point_in_screen| for
  60   // positioning.
  61   void InitAsBubbleAtFixedLocation(gfx::NativeView parent,
  62                                    int initial_apps_page,
  63                                    const gfx::Point& anchor_point_in_screen,
  64                                    views::BubbleBorder::Arrow arrow,
  65                                    bool border_accepts_events);
  66
  67   // Initializes the widget as a frameless window, not a bubble.
  68   void InitAsFramelessWindow(gfx::NativeView parent,
  69                              int initial_apps_page,
  70                              gfx::Rect bounds);
  71
  72   void SetBubbleArrow(views::BubbleBorder::Arrow arrow);
  73
  74   void SetAnchorPoint(const gfx::Point& anchor_point);
  75
  76   // If |drag_and_drop_host| is not NULL it will be called upon drag and drop
  77   // operations outside the application list. This has to be called after
  78   // InitAsBubble was called since the app list object needs to exist so that
  79   // it can set the host.
  80   void SetDragAndDropHostOfCurrentAppList(
  81       ApplicationDragAndDropHost* drag_and_drop_host);
  82
  83   // Shows the UI when there are no pending icon loads. Otherwise, starts a
  84   // timer to show the UI when a maximum allowed wait time has expired.
  85   void ShowWhenReady();
  86
  87   void Close();
  88
  89   void UpdateBounds();
  90
  91   // Enables/disables a semi-transparent overlay over the app list (good for
  92   // hiding the app list when a modal dialog is being shown).
  93   void SetAppListOverlayVisible(bool visible);
  94
  95   // Returns true if the app list should be centered and in landscape mode.
  96   bool ShouldCenterWindow() const;
  97
  98   // Overridden from views::View:
  99   gfx::Size GetPreferredSize() const override;
 100   void Paint(gfx::Canvas* canvas, const views::CullSet& cull_set) override;
 101   void OnThemeChanged() override;
 102
 103   // WidgetDelegate overrides:
 104   bool ShouldHandleSystemCommands() const override;
 105
 106   // Overridden from AppListViewDelegateObserver:
 107   void OnProfilesChanged() override;
 108   void OnShutdown() override;
 109
 110   void Prerender();
 111
 112   void SetProfileByPath(const base::FilePath& profile_path);
 113
 114   void AddObserver(AppListViewObserver* observer);
 115   void RemoveObserver(AppListViewObserver* observer);
 116
 117   // Set a callback to be called the next time any app list paints.
 118   void SetNextPaintCallback(const base::Closure& callback);
 119
 120 #if defined(OS_WIN)
 121   HWND GetHWND() const;
 122 #endif
 123
 124   AppListMainView* app_list_main_view() { return app_list_main_view_; }
 125
 126   // Gets the PaginationModel owned by this view's apps grid.
 127   PaginationModel* GetAppsPaginationModel();
 128
 129   // Overridden from views::View:
 130   bool AcceleratorPressed(const ui::Accelerator& accelerator) override;
 131   void Layout() override;
 132   void SchedulePaintInRect(const gfx::Rect& rect) override;
 133
 134  private:
 135   friend class ::test::AppListViewTestApi;
 136
 137   void InitContents(gfx::NativeView parent, int initial_apps_page);
 138
 139   void InitAsBubbleInternal(gfx::NativeView parent,
 140                             int initial_apps_page,
 141                             views::BubbleBorder::Arrow arrow,
 142                             bool border_accepts_events,
 143                             const gfx::Vector2d& anchor_offset);
 144
 145   // Overridden from views::BubbleDelegateView:
 146   void OnBeforeBubbleWidgetInit(views::Widget::InitParams* params,
 147                                 views::Widget* widget) const override;
 148
 149   // Overridden from views::WidgetDelegateView:
 150   views::View* GetInitiallyFocusedView() override;
 151   gfx::ImageSkia GetWindowIcon() override;
 152   bool WidgetHasHitTestMask() const override;
 153   void GetWidgetHitTestMask(gfx::Path* mask) const override;
 154
 155   // Overridden from views::WidgetObserver:
 156   void OnWidgetDestroying(views::Widget* widget) override;
 157   void OnWidgetVisibilityChanged(views::Widget* widget, bool visible) override;
 158   void OnWidgetActivationChanged(views::Widget* widget, bool active) override;
 159
 160   // Overridden from SpeechUIModelObserver:
 161   void OnSpeechRecognitionStateChanged(
 162       SpeechRecognitionState new_state) override;
 163
 164   AppListViewDelegate* delegate_;  // Weak. Owned by AppListService.
 165
 166   AppListMainView* app_list_main_view_;
 167   SearchBoxView* search_box_view_;
 168   SpeechView* speech_view_;
 169
 170   // A semi-transparent white overlay that covers the app list while dialogs are
 171   // open.
 172   views::View* overlay_view_;
 173
 174   ObserverList<AppListViewObserver> observers_;
 175   scoped_ptr<HideViewAnimationObserver> animation_observer_;
 176
 177   // For UMA and testing. If non-null, triggered when the app list is painted.
 178   base::Closure next_paint_callback_;
 179
 180   DISALLOW_COPY_AND_ASSIGN(AppListView);
 181 };
 182
 183 }  // namespace app_list
 184
 185 #endif  // UI_APP_LIST_VIEWS_APP_LIST_VIEW_H_