ui/views/touchui/touch_editing_menu.h

   1 // Copyright (c) 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 UI_VIEWS_TOUCHUI_TOUCH_EDITING_MENU_H_
   6 #define UI_VIEWS_TOUCHUI_TOUCH_EDITING_MENU_H_
   7
   8 #include "ui/gfx/point.h"
   9 #include "ui/views/bubble/bubble_delegate.h"
  10 #include "ui/views/controls/button/button.h"
  11 #include "ui/views/views_export.h"
  12
  13 namespace gfx {
  14 class Canvas;
  15 }
  16
  17 namespace views {
  18 class TouchEditingMenuView;
  19 class Widget;
  20
  21 class VIEWS_EXPORT TouchEditingMenuController {
  22  public:
  23   // Checks if the specified menu command is supported.
  24   virtual bool IsCommandIdEnabled(int command_id) const = 0;
  25
  26   // Send a context menu command to the controller.
  27   virtual void ExecuteCommand(int command_id, int event_flags) = 0;
  28
  29   // Tell the controller that user has selected the context menu button.
  30   virtual void OpenContextMenu() = 0;
  31
  32   // Called when the menu is closed.
  33   virtual void OnMenuClosed(TouchEditingMenuView* menu) = 0;
  34
  35  protected:
  36   virtual ~TouchEditingMenuController() {}
  37 };
  38
  39 // A View that displays the touch context menu.
  40 class VIEWS_EXPORT TouchEditingMenuView : public BubbleDelegateView,
  41                                           public ButtonListener {
  42  public:
  43   virtual ~TouchEditingMenuView();
  44
  45   // If there are no actions available for the menu, returns NULL. Otherwise,
  46   // returns a new instance of TouchEditingMenuView.
  47   static TouchEditingMenuView* Create(TouchEditingMenuController* controller,
  48                                       const gfx::Rect& anchor_rect,
  49                                       const gfx::Size& handle_image_size,
  50                                       gfx::NativeView context);
  51
  52   void Close();
  53
  54  private:
  55   TouchEditingMenuView(TouchEditingMenuController* controller,
  56                        const gfx::Rect& anchor_rect,
  57                        const gfx::Size& handle_image_size,
  58                        gfx::NativeView context);
  59
  60   // views::WidgetDelegate overrides:
  61   virtual void WindowClosing() OVERRIDE;
  62
  63   // Overridden from ButtonListener.
  64   virtual void ButtonPressed(Button* sender, const ui::Event& event) OVERRIDE;
  65
  66   // Overridden from BubbleDelegateView.
  67   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
  68
  69   // Queries the |controller_| for what elements to show in the menu and sizes
  70   // the menu appropriately.
  71   void CreateButtons();
  72
  73   // Helper method to create a single button.
  74   Button* CreateButton(const base::string16& title, int tag);
  75
  76   TouchEditingMenuController* controller_;
  77
  78   DISALLOW_COPY_AND_ASSIGN(TouchEditingMenuView);
  79 };
  80
  81 }  // namespace views
  82
  83 #endif  // UI_VIEWS_TOUCHUI_TOUCH_SELECTION_CONTROLLER_IMPL_H_