ash/system/status_area_widget_delegate.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 ASH_SYSTEM_STATUS_AREA_WIDGET_DELEGATE_H_
   6 #define ASH_SYSTEM_STATUS_AREA_WIDGET_DELEGATE_H_
   7
   8 #include "ash/ash_export.h"
   9 #include "ash/shelf/shelf_types.h"
  10 #include "ash/wm/gestures/shelf_gesture_handler.h"
  11 #include "ui/gfx/image/image_skia.h"
  12 #include "ui/views/accessible_pane_view.h"
  13 #include "ui/views/widget/widget_delegate.h"
  14
  15 namespace ash {
  16 class FocusCycler;
  17
  18 class ASH_EXPORT StatusAreaWidgetDelegate : public views::AccessiblePaneView,
  19                                             public views::WidgetDelegate {
  20  public:
  21   StatusAreaWidgetDelegate();
  22   ~StatusAreaWidgetDelegate() override;
  23
  24   // Add a tray view to the widget (e.g. system tray, web notifications).
  25   void AddTray(views::View* tray);
  26
  27   // Called whenever layout might change (e.g. alignment changed).
  28   void UpdateLayout();
  29
  30   // Sets the focus cycler.
  31   void SetFocusCyclerForTesting(const FocusCycler* focus_cycler);
  32
  33   void set_alignment(ShelfAlignment alignment) { alignment_ = alignment; }
  34
  35   // Overridden from views::AccessiblePaneView.
  36   View* GetDefaultFocusableChild() override;
  37
  38   // Overridden from views::View:
  39   views::Widget* GetWidget() override;
  40   const views::Widget* GetWidget() const override;
  41
  42   // Overridden from ui::EventHandler:
  43   void OnGestureEvent(ui::GestureEvent* event) override;
  44
  45   // views::WidgetDelegate overrides:
  46   bool CanActivate() const override;
  47   void DeleteDelegate() override;
  48
  49  protected:
  50   // Overridden from views::View:
  51   void ChildPreferredSizeChanged(views::View* child) override;
  52   void ChildVisibilityChanged(views::View* child) override;
  53
  54  private:
  55   void UpdateWidgetSize();
  56
  57   const FocusCycler* focus_cycler_for_testing_;
  58   ShelfAlignment alignment_;
  59
  60   ShelfGestureHandler gesture_handler_;
  61
  62   DISALLOW_COPY_AND_ASSIGN(StatusAreaWidgetDelegate);
  63 };
  64
  65 }  // namespace ash
  66
  67 #endif  // ASH_SYSTEM_STATUS_AREA_WIDGET_DELEGATE_H_