ash/shelf/app_list_button.h

   1 // Copyright 2014 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_SHELF_APP_LIST_BUTTON_H_
   6 #define ASH_SHELF_APP_LIST_BUTTON_H_
   7
   8 #include "ui/views/controls/button/image_button.h"
   9
  10 namespace ash {
  11 class ShelfButtonHost;
  12 class ShelfWidget;
  13
  14 // Button used for the AppList icon on the shelf.
  15 class AppListButton : public views::ImageButton {
  16  public:
  17   // Bounds size (inset) required for the app icon image (in pixels).
  18   static const int kImageBoundsSize;
  19
  20   AppListButton(views::ButtonListener* listener,
  21                 ShelfButtonHost* host,
  22                 ShelfWidget* shelf_widget);
  23   virtual ~AppListButton();
  24
  25  protected:
  26   // views::ImageButton overrides:
  27   virtual bool OnMousePressed(const ui::MouseEvent& event) OVERRIDE;
  28   virtual void OnMouseReleased(const ui::MouseEvent& event) OVERRIDE;
  29   virtual void OnMouseCaptureLost() OVERRIDE;
  30   virtual bool OnMouseDragged(const ui::MouseEvent& event) OVERRIDE;
  31   virtual void OnMouseMoved(const ui::MouseEvent& event) OVERRIDE;
  32   virtual void OnMouseEntered(const ui::MouseEvent& event) OVERRIDE;
  33   virtual void OnMouseExited(const ui::MouseEvent& event) OVERRIDE;
  34   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
  35   virtual void GetAccessibleState(ui::AXViewState* state) OVERRIDE;
  36
  37   // ui::EventHandler overrides:
  38   virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE;
  39
  40  private:
  41   ShelfButtonHost* host_;
  42   // Reference to the shelf widget containing this button, owned by the
  43   // root window controller.
  44   ShelfWidget* shelf_widget_;
  45
  46   DISALLOW_COPY_AND_ASSIGN(AppListButton);
  47 };
  48
  49 }  // namespace ash
  50
  51 #endif  // ASH_SHELF_APP_LIST_BUTTON_H_