ash/shelf/alternate_app_list_button.h

   1 // Copyright 2013 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_ALTERNATE_APP_LIST_BUTTON_H_
   6 #define ASH_SHELF_ALTERNATE_APP_LIST_BUTTON_H_
   7
   8 #include "ui/views/controls/button/image_button.h"
   9
  10 namespace ash {
  11
  12 class ShelfWidget;
  13
  14 namespace internal {
  15
  16 class LauncherButtonHost;
  17
  18 // Button used for the AppList icon on the launcher.
  19 // This class is an alternate implementation to
  20 // ash::internal::AppListButton for the purposes of testing an
  21 // alternate shelf layout (see ash_switches: UseAlternateShelfLayout).
  22 class AlternateAppListButton : public views::ImageButton {
  23  public:
  24   // Bounds size (inset) required for the app icon image (in pixels).
  25   static const int kImageBoundsSize;
  26
  27   AlternateAppListButton(views::ButtonListener* listener,
  28                          LauncherButtonHost* host,
  29                          ShelfWidget* shelf_widget);
  30   virtual ~AlternateAppListButton();
  31
  32  protected:
  33   // views::ImageButton overrides:
  34   virtual bool OnMousePressed(const ui::MouseEvent& event) OVERRIDE;
  35   virtual void OnMouseReleased(const ui::MouseEvent& event) OVERRIDE;
  36   virtual void OnMouseCaptureLost() OVERRIDE;
  37   virtual bool OnMouseDragged(const ui::MouseEvent& event) OVERRIDE;
  38   virtual void OnMouseMoved(const ui::MouseEvent& event) OVERRIDE;
  39   virtual void OnMouseEntered(const ui::MouseEvent& event) OVERRIDE;
  40   virtual void OnMouseExited(const ui::MouseEvent& event) OVERRIDE;
  41   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
  42   virtual void GetAccessibleState(ui::AccessibleViewState* state) OVERRIDE;
  43
  44   // ui::EventHandler overrides:
  45   virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE;
  46
  47  private:
  48   LauncherButtonHost* host_;
  49   // Reference to the shelf widget containing this button, owned by the
  50   // root window controller.
  51   ShelfWidget* shelf_widget_;
  52
  53   DISALLOW_COPY_AND_ASSIGN(AlternateAppListButton);
  54 };
  55
  56 }  // namespace internal
  57 }  // namespace ash
  58
  59 #endif  // ASH_SHELF_ALTERNATE_APP_LIST_BUTTON_H_