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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef UI_VIEWS_CONTROLS_MENU_NATIVE_MENU_WIN_H_ | 5 #ifndef UI_VIEWS_CONTROLS_MENU_NATIVE_MENU_WIN_H_ |
| 6 #define UI_VIEWS_CONTROLS_MENU_NATIVE_MENU_WIN_H_ | 6 #define UI_VIEWS_CONTROLS_MENU_NATIVE_MENU_WIN_H_ |
| 7 | 7 |
| 8 #include <vector> | 8 #include <vector> |
| 9 | 9 |
| 10 #include "base/basictypes.h" | 10 #include "base/basictypes.h" |
| 11 #include "base/compiler_specific.h" |
| 11 #include "base/memory/scoped_ptr.h" | 12 #include "base/memory/scoped_ptr.h" |
| 12 #include "base/memory/weak_ptr.h" | 13 #include "base/memory/weak_ptr.h" |
| 13 #include "base/observer_list.h" | 14 #include "base/observer_list.h" |
| 14 #include "base/string16.h" | 15 #include "base/string16.h" |
| 16 #include "ui/views/controls/menu/menu_wrapper.h" |
| 15 #include "ui/views/views_export.h" | 17 #include "ui/views/views_export.h" |
| 16 | 18 |
| 17 namespace gfx { | |
| 18 class Point; | |
| 19 } | |
| 20 | |
| 21 namespace ui { | 19 namespace ui { |
| 22 class MenuModel; | 20 class MenuModel; |
| 23 } | 21 } |
| 24 | 22 |
| 25 namespace views { | 23 namespace views { |
| 26 | 24 |
| 27 class MenuInsertionDelegate; | 25 // A Windows implementation of MenuWrapper. |
| 28 class MenuListener; | 26 // TODO(beng): rename to MenuWin once the old class is dead. |
| 29 | 27 class VIEWS_EXPORT NativeMenuWin : public MenuWrapper { |
| 30 class VIEWS_EXPORT NativeMenuWin { | |
| 31 public: | 28 public: |
| 32 // All of the possible actions that can result from RunMenuAt. | |
| 33 enum MenuAction { | |
| 34 MENU_ACTION_NONE, // Menu cancelled, or never opened. | |
| 35 MENU_ACTION_SELECTED, // An item was selected. | |
| 36 MENU_ACTION_PREVIOUS, // User wants to navigate to the previous menu. | |
| 37 MENU_ACTION_NEXT, // User wants to navigate to the next menu. | |
| 38 }; | |
| 39 | |
| 40 // How the menu is aligned relative to the point it is shown at. | |
| 41 // The alignment is reversed by menu if text direction is right to left. | |
| 42 enum Alignment { | |
| 43 ALIGN_TOPLEFT, | |
| 44 ALIGN_TOPRIGHT | |
| 45 }; | |
| 46 | |
| 47 // Construct a NativeMenuWin, with a model and delegate. If |system_menu_for| | 29 // Construct a NativeMenuWin, with a model and delegate. If |system_menu_for| |
| 48 // is non-NULL, the NativeMenuWin wraps the system menu for that window. | 30 // is non-NULL, the NativeMenuWin wraps the system menu for that window. |
| 49 // The caller owns the model and the delegate. | 31 // The caller owns the model and the delegate. |
| 50 NativeMenuWin(ui::MenuModel* model, HWND system_menu_for); | 32 NativeMenuWin(ui::MenuModel* model, HWND system_menu_for); |
| 51 ~NativeMenuWin(); | 33 virtual ~NativeMenuWin(); |
| 52 | 34 |
| 53 void RunMenuAt(const gfx::Point& point, int alignment); | 35 // Overridden from MenuWrapper: |
| 54 void CancelMenu(); | 36 virtual void RunMenuAt(const gfx::Point& point, int alignment) OVERRIDE; |
| 55 void Rebuild(MenuInsertionDelegate* delegate); | 37 virtual void CancelMenu() OVERRIDE; |
| 56 void UpdateStates(); | 38 virtual void Rebuild(InsertionDelegate* delegate) OVERRIDE; |
| 57 HMENU GetNativeMenu() const; | 39 virtual void UpdateStates() OVERRIDE; |
| 58 MenuAction GetMenuAction() const; | 40 virtual HMENU GetNativeMenu() const OVERRIDE; |
| 59 void AddMenuListener(MenuListener* listener); | 41 virtual MenuAction GetMenuAction() const OVERRIDE; |
| 60 void RemoveMenuListener(MenuListener* listener); | 42 virtual void AddMenuListener(MenuListener* listener) OVERRIDE; |
| 61 void SetMinimumWidth(int width); | 43 virtual void RemoveMenuListener(MenuListener* listener) OVERRIDE; |
| 44 virtual void SetMinimumWidth(int width) OVERRIDE; |
| 62 | 45 |
| 63 private: | 46 private: |
| 64 // IMPORTANT: Note about indices. | 47 // IMPORTANT: Note about indices. |
| 65 // Functions in this class deal in two index spaces: | 48 // Functions in this class deal in two index spaces: |
| 66 // 1. menu_index - the index of an item within the actual Windows | 49 // 1. menu_index - the index of an item within the actual Windows |
| 67 // native menu. | 50 // native menu. |
| 68 // 2. model_index - the index of the item within our model. | 51 // 2. model_index - the index of the item within our model. |
| 69 // These two are most often but not always the same value! The | 52 // These two are most often but not always the same value! The |
| 70 // notable exception is when this object is used to wrap the | 53 // notable exception is when this object is used to wrap the |
| 71 // Windows System Menu. In this instance, the model indices start | 54 // Windows System Menu. In this instance, the model indices start |
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| 177 // has a menu open, because our hook function that receives keyboard | 160 // has a menu open, because our hook function that receives keyboard |
| 178 // events doesn't have a mechanism to get a user data pointer. | 161 // events doesn't have a mechanism to get a user data pointer. |
| 179 static NativeMenuWin* open_native_menu_win_; | 162 static NativeMenuWin* open_native_menu_win_; |
| 180 | 163 |
| 181 DISALLOW_COPY_AND_ASSIGN(NativeMenuWin); | 164 DISALLOW_COPY_AND_ASSIGN(NativeMenuWin); |
| 182 }; | 165 }; |
| 183 | 166 |
| 184 } // namespace views | 167 } // namespace views |
| 185 | 168 |
| 186 #endif // UI_VIEWS_CONTROLS_MENU_NATIVE_MENU_WIN_H_ | 169 #endif // UI_VIEWS_CONTROLS_MENU_NATIVE_MENU_WIN_H_ |
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