src/win32/ime/ime_language_bar_menu.h - mozc - Git at Google

 // Copyright 2010-2015, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 // notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 // copyright notice, this list of conditions and the following disclaimer
 // in the documentation and/or other materials provided with the
 // distribution.
 //     * Neither the name of Google Inc. nor the names of its
 // contributors may be used to endorse or promote products derived from
 // this software without specific prior written permission.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 #ifndef MOZC_WIN32_IME_IME_LANGUAGE_BAR_MENU_H_
 #define MOZC_WIN32_IME_IME_LANGUAGE_BAR_MENU_H_

 #include <windows.h>
 #include <rpcsal.h>
 #include <msctf.h>
 #include <vector>

 // MIDL_INTERFACE expects a string literal rather than a constant array of
 // characters.
 #ifdef GOOGLE_JAPANESE_INPUT_BUILD
 #define IIDSTR_IMozcLangBarMenu "85B8A2CD-88A0-469f-BC39-8333620AE1F5"
 #define IIDSTR_IMozcToggleButtonMenu "E625A19B-C56D-4511-8B48-5A7C2AA10DF5"
 #else
 #define IIDSTR_IMozcLangBarMenu "6419BEBA-28B7-458D-B7C7-46657FE468D9"
 #define IIDSTR_IMozcToggleButtonMenu "14CAC0FE-90C3-4DFC-97FA-B7113F93BD74"
 #endif

 class LangBarCallback;

 enum ImeLangBarItemFlags {
   kImeLangBarItemTypeDefault = 0,
   kImeLangBarItemTypeChecked = TF_LBMENUF_CHECKED,            // 0x1
   // ImeLangBarItemTypeSubMenu = TF_LBMENUF_SUBMENU  // 0x2 (not supported)
   kImeLangBarItemTypeSeparator = TF_LBMENUF_SEPARATOR,        // 0x4
   kImeLangBarItemTypeRadioChecked = TF_LBMENUF_RADIOCHECKED,  // 0x8
   kImeLangBarItemTypeGrayed = TF_LBMENUF_GRAYED,              // 0x10
 };

 // Represents a tuple to specify the content of a language bar menu item.
 struct ImeLangBarMenuItem {
   ImeLangBarItemFlags flags_;
   UINT menu_id_;
   UINT text_id_;
   UINT icon_id_for_non_theme_;
   UINT icon_id_for_theme_;
 };

 // Reperesents the data possessed internally by a language bar menu item.
 struct ImeLangBarMenuData {
   int flags_;
   UINT menu_id_;
   UINT text_id_;
   UINT icon_id_for_non_theme_;
   UINT icon_id_for_theme_;
   int length_;
   wchar_t text_[TF_LBI_DESC_MAXLEN];
 };

 // Reperesents the data possessed by a language bar menu.
 class ImeLangBarMenuDataArray {
  public:
   HRESULT Init(HINSTANCE instance,
                const ImeLangBarMenuItem* menu,
                int count);

   size_t size() const;
   ImeLangBarMenuData* data(size_t i);
  private:
   vector<ImeLangBarMenuData> data_;
 };

 MIDL_INTERFACE(IIDSTR_IMozcLangBarMenu)
 IMozcLangBarMenu : public IUnknown {
   // Sets the status of this language bar menu.
   virtual STDMETHODIMP SetEnabled(bool enabled) = 0;
 };


 MIDL_INTERFACE(IIDSTR_IMozcToggleButtonMenu)
 IMozcToggleButtonMenu : public IUnknown {
   // Selects a menu item which has the given |menu_id|.
   virtual STDMETHODIMP SelectMenuItem(UINT menu_id) = 0;
 };

 // Represents the common operations for a button-menu item in the language bar.
 class ImeLangBarMenu
     : public ITfLangBarItemButton,
       public ITfSource,
       public IMozcLangBarMenu {
  public:
   explicit ImeLangBarMenu(LangBarCallback* langbar_callback,
                           const GUID& guid,
                           bool show_in_tray);
   // It is OK to declare the destructor as non-virtual because all the
   // insbtances will be deleted from and only from the Release() method by
   // |delete this| where |this| has the true (derived) type of the instance.
   ~ImeLangBarMenu();

   // The IUnknown interface methods
   virtual STDMETHODIMP QueryInterface(REFIID guid, void** object) = 0;
   virtual STDMETHODIMP_(ULONG) AddRef() = 0;
   virtual STDMETHODIMP_(ULONG) Release() = 0;

   // The ITfLangBarItem interface methods
   virtual STDMETHODIMP GetInfo(TF_LANGBARITEMINFO* item_info) = 0;
   virtual STDMETHODIMP GetStatus(DWORD* status);
   virtual STDMETHODIMP Show(BOOL show);
   virtual STDMETHODIMP GetTooltipString(BSTR* tooltip);

   // The ITfLangBarItemButton interface methods
   virtual STDMETHODIMP OnClick(TfLBIClick clink, POINT point,
                                const RECT* rect);
   virtual STDMETHODIMP InitMenu(ITfMenu* menu) = 0;
   virtual STDMETHODIMP OnMenuSelect(UINT menu_id) = 0;
   virtual STDMETHODIMP GetIcon(HICON* icon) = 0;
   virtual STDMETHODIMP GetText(BSTR* text);

   // The ITfSource interface methods
   virtual STDMETHODIMP AdviseSink(REFIID interface_id,
                                   IUnknown* unknown,
                                   DWORD* cookie);
   virtual STDMETHODIMP UnadviseSink(DWORD cookie);

   // The IMozcLangBarMenu interface method
   virtual STDMETHODIMP SetEnabled(bool enabled);

   // Initializes an ImeButtonMenu instance.
   // This function allocates resources for an ImeButtonMenu instance.
   HRESULT Init(HINSTANCE instance,
                int string_id,
                const ImeLangBarMenuItem* menu,
                int count);

   // Notifies the language bar of a change in a language bar item.
   STDMETHODIMP OnUpdate(DWORD update_flag);

   // Returns true if a 32-bpp icon can be displayed as a context menu item on
   // the LangBar.  See http://b/2260057 and http://b/2265755
   // for details.
   static bool CanContextMenuDisplay32bppIcon();

  protected:
   STDMETHODIMP QueryInterfaceBase(REFIID guid, void** object);

   // Returns the i-th data in the language bar menu.
   // Returns NULL if i is out of bounds.
   ImeLangBarMenuData* menu_data(size_t i);

   // Returns the size of the language bar menu.
   size_t menu_data_size() const;

   // Returns the item information for langbar menu.
   const TF_LANGBARITEMINFO* item_info() const;

   ITfLangBarItemSink* item_sink_;
   LangBarCallback* langbar_callback_;

  private:
   // Represents the information of an instance copied to the TSF manager.
   // The TSF manager uses this information to identifies an instance as
   // a menu button.
   TF_LANGBARITEMINFO item_info_;

   // Represents the data possessed by the language bar menu.
   ImeLangBarMenuDataArray menu_data_;

   // Records TF_LBI_STATUS_* bits and represents the status of the this langbar
   // menu.
   DWORD status_;
 };

 // Represents the common operations for a button-menu item with an icon in the
 // language bar.
 class ImeIconButtonMenu : public ImeLangBarMenu {
  public:
   explicit ImeIconButtonMenu(LangBarCallback* langbar_callback,
                              const GUID& guid,
                              bool show_in_tray);

   // The IUnknown interface methods
   virtual STDMETHODIMP QueryInterface(REFIID guid, void** object);
   virtual STDMETHODIMP_(ULONG) AddRef();
   virtual STDMETHODIMP_(ULONG) Release();

   virtual STDMETHODIMP GetInfo(TF_LANGBARITEMINFO* item_info);

   // A part of the ITfLangBarItemButton interface methods
   virtual STDMETHODIMP InitMenu(ITfMenu* menu);
   virtual STDMETHODIMP OnMenuSelect(UINT menu_id);
   virtual STDMETHODIMP GetIcon(HICON* icon);

   // Initializes an ImeButtonMenu instance.
   // This function allocates resources for an ImeButtonMenu instance.
   HRESULT Init(HINSTANCE instance,
                UINT string_id,
                const ImeLangBarMenuItem* menu,
                int count,
                UINT menu_icon_id_for_non_theme,
                UINT menu_icon_id_for_theme);

  private:
   // Represents the reference count to an instance.
   // volatile modifier is added to conform with InterlockedIncrement API.
   volatile LONG reference_count_;

   // Represents the icon of the language bar menu.
   UINT menu_icon_id_for_theme_;
   UINT menu_icon_id_for_non_theme_;
 };

 // Represents the common operations for a toggle button-menu item in the
 // language bar.
 class ImeToggleButtonMenu
     : public ImeLangBarMenu,
       public IMozcToggleButtonMenu {
  public:
   explicit ImeToggleButtonMenu(LangBarCallback* langbar_callback,
                                const GUID& guid,
                                bool show_in_tray);
   ~ImeToggleButtonMenu();

   // The IUnknown interface methods
   virtual STDMETHODIMP QueryInterface(REFIID guid, void** object);
   virtual STDMETHODIMP_(ULONG) AddRef();
   virtual STDMETHODIMP_(ULONG) Release();

   // The IToggleButtonMenu interface methods
   virtual STDMETHODIMP SelectMenuItem(UINT menu_id);

   virtual STDMETHODIMP GetInfo(TF_LANGBARITEMINFO* item_info);

   STDMETHODIMP InitMenu(ITfMenu* menu);
   STDMETHODIMP OnMenuSelect(UINT menu_id);
   STDMETHODIMP GetIcon(HICON* icon);

   // Initializes an ImeButtonMenu instance.
   // This function allocates resources for an ImeButtonMenu instance.
   HRESULT Init(HINSTANCE instance,
                int string_id,
                const ImeLangBarMenuItem* menu,
                int count);

  private:
   // Represents the reference count to an instance.
   // volatile modifier is added to conform with InterlockedIncrement API.
   volatile LONG reference_count_;

   // Represents the index of the selected menu item.
   UINT menu_selected_;
 };

 // Represents the common operations for a button-menu item in the system
 // language bar.
 class ImeSystemLangBarMenu
     : public ITfSystemLangBarItemSink {
  public:
   explicit ImeSystemLangBarMenu(LangBarCallback* langbar_callback,
                                 const GUID& guid);
   ~ImeSystemLangBarMenu();

   // The IUnknown interface methods
   STDMETHODIMP QueryInterface(REFIID guid, void** object);
   STDMETHODIMP_(ULONG) AddRef(void);
   STDMETHODIMP_(ULONG) Release(void);

   // The ITfLangBarSystemItem interface methods
   STDMETHODIMP InitMenu(ITfMenu* menu);
   STDMETHODIMP OnMenuSelect(UINT menu_id);

   // Initializes an ImeButtonMenu instance.
   // This function allocates resources for an ImeButtonMenu instance.
   HRESULT Init(HINSTANCE instance,
                const ImeLangBarMenuItem* menu,
                int count);

  private:
   // Represents the reference count to an instance.
   // volatile modifier is added to conform with InterlockedIncrement API.
   volatile LONG reference_count_;

   LangBarCallback* langbar_callback_;

   // Represents the data possessed by the language bar menu.
   ImeLangBarMenuDataArray menu_data_;
 };

 #endif  // MOZC_WIN32_IME_IME_LANGUAGE_BAR_MENU_H_
	// Copyright 2010-2015, Google Inc.
	// All rights reserved.
	//
	// Redistribution and use in source and binary forms, with or without
	// modification, are permitted provided that the following conditions are
	// met:
	//
	// * Redistributions of source code must retain the above copyright
	// notice, this list of conditions and the following disclaimer.
	// * Redistributions in binary form must reproduce the above
	// copyright notice, this list of conditions and the following disclaimer
	// in the documentation and/or other materials provided with the
	// distribution.
	// * Neither the name of Google Inc. nor the names of its
	// contributors may be used to endorse or promote products derived from
	// this software without specific prior written permission.
	//
	// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
	// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

	#ifndef MOZC_WIN32_IME_IME_LANGUAGE_BAR_MENU_H_
	#define MOZC_WIN32_IME_IME_LANGUAGE_BAR_MENU_H_

	#include <windows.h>
	#include <rpcsal.h>
	#include <msctf.h>
	#include <vector>

	// MIDL_INTERFACE expects a string literal rather than a constant array of
	// characters.
	#ifdef GOOGLE_JAPANESE_INPUT_BUILD
	#define IIDSTR_IMozcLangBarMenu "85B8A2CD-88A0-469f-BC39-8333620AE1F5"
	#define IIDSTR_IMozcToggleButtonMenu "E625A19B-C56D-4511-8B48-5A7C2AA10DF5"
	#else
	#define IIDSTR_IMozcLangBarMenu "6419BEBA-28B7-458D-B7C7-46657FE468D9"
	#define IIDSTR_IMozcToggleButtonMenu "14CAC0FE-90C3-4DFC-97FA-B7113F93BD74"
	#endif

	class LangBarCallback;

	enum ImeLangBarItemFlags {
	kImeLangBarItemTypeDefault = 0,
	kImeLangBarItemTypeChecked = TF_LBMENUF_CHECKED, // 0x1
	// ImeLangBarItemTypeSubMenu = TF_LBMENUF_SUBMENU // 0x2 (not supported)
	kImeLangBarItemTypeSeparator = TF_LBMENUF_SEPARATOR, // 0x4
	kImeLangBarItemTypeRadioChecked = TF_LBMENUF_RADIOCHECKED, // 0x8
	kImeLangBarItemTypeGrayed = TF_LBMENUF_GRAYED, // 0x10
	};

	// Represents a tuple to specify the content of a language bar menu item.
	struct ImeLangBarMenuItem {
	ImeLangBarItemFlags flags_;
	UINT menu_id_;
	UINT text_id_;
	UINT icon_id_for_non_theme_;
	UINT icon_id_for_theme_;
	};

	// Reperesents the data possessed internally by a language bar menu item.
	struct ImeLangBarMenuData {
	int flags_;
	UINT menu_id_;
	UINT text_id_;
	UINT icon_id_for_non_theme_;
	UINT icon_id_for_theme_;
	int length_;
	wchar_t text_[TF_LBI_DESC_MAXLEN];
	};

	// Reperesents the data possessed by a language bar menu.
	class ImeLangBarMenuDataArray {
	public:
	HRESULT Init(HINSTANCE instance,
	const ImeLangBarMenuItem* menu,
	int count);

	size_t size() const;
	ImeLangBarMenuData* data(size_t i);
	private:
	vector<ImeLangBarMenuData> data_;
	};

	MIDL_INTERFACE(IIDSTR_IMozcLangBarMenu)
	IMozcLangBarMenu : public IUnknown {
	// Sets the status of this language bar menu.
	virtual STDMETHODIMP SetEnabled(bool enabled) = 0;
	};


	MIDL_INTERFACE(IIDSTR_IMozcToggleButtonMenu)
	IMozcToggleButtonMenu : public IUnknown {
	// Selects a menu item which has the given \|menu_id\|.
	virtual STDMETHODIMP SelectMenuItem(UINT menu_id) = 0;
	};

	// Represents the common operations for a button-menu item in the language bar.
	class ImeLangBarMenu
	: public ITfLangBarItemButton,
	public ITfSource,
	public IMozcLangBarMenu {
	public:
	explicit ImeLangBarMenu(LangBarCallback* langbar_callback,
	const GUID& guid,
	bool show_in_tray);
	// It is OK to declare the destructor as non-virtual because all the
	// insbtances will be deleted from and only from the Release() method by
	// \|delete this\| where \|this\| has the true (derived) type of the instance.
	~ImeLangBarMenu();

	// The IUnknown interface methods
	virtual STDMETHODIMP QueryInterface(REFIID guid, void** object) = 0;
	virtual STDMETHODIMP_(ULONG) AddRef() = 0;
	virtual STDMETHODIMP_(ULONG) Release() = 0;

	// The ITfLangBarItem interface methods
	virtual STDMETHODIMP GetInfo(TF_LANGBARITEMINFO* item_info) = 0;
	virtual STDMETHODIMP GetStatus(DWORD* status);
	virtual STDMETHODIMP Show(BOOL show);
	virtual STDMETHODIMP GetTooltipString(BSTR* tooltip);

	// The ITfLangBarItemButton interface methods
	virtual STDMETHODIMP OnClick(TfLBIClick clink, POINT point,
	const RECT* rect);
	virtual STDMETHODIMP InitMenu(ITfMenu* menu) = 0;
	virtual STDMETHODIMP OnMenuSelect(UINT menu_id) = 0;
	virtual STDMETHODIMP GetIcon(HICON* icon) = 0;
	virtual STDMETHODIMP GetText(BSTR* text);

	// The ITfSource interface methods
	virtual STDMETHODIMP AdviseSink(REFIID interface_id,
	IUnknown* unknown,
	DWORD* cookie);
	virtual STDMETHODIMP UnadviseSink(DWORD cookie);

	// The IMozcLangBarMenu interface method
	virtual STDMETHODIMP SetEnabled(bool enabled);

	// Initializes an ImeButtonMenu instance.
	// This function allocates resources for an ImeButtonMenu instance.
	HRESULT Init(HINSTANCE instance,
	int string_id,
	const ImeLangBarMenuItem* menu,
	int count);

	// Notifies the language bar of a change in a language bar item.
	STDMETHODIMP OnUpdate(DWORD update_flag);

	// Returns true if a 32-bpp icon can be displayed as a context menu item on
	// the LangBar. See http://b/2260057 and http://b/2265755
	// for details.
	static bool CanContextMenuDisplay32bppIcon();

	protected:
	STDMETHODIMP QueryInterfaceBase(REFIID guid, void** object);

	// Returns the i-th data in the language bar menu.
	// Returns NULL if i is out of bounds.
	ImeLangBarMenuData* menu_data(size_t i);

	// Returns the size of the language bar menu.
	size_t menu_data_size() const;

	// Returns the item information for langbar menu.
	const TF_LANGBARITEMINFO* item_info() const;

	ITfLangBarItemSink* item_sink_;
	LangBarCallback* langbar_callback_;

	private:
	// Represents the information of an instance copied to the TSF manager.
	// The TSF manager uses this information to identifies an instance as
	// a menu button.
	TF_LANGBARITEMINFO item_info_;

	// Represents the data possessed by the language bar menu.
	ImeLangBarMenuDataArray menu_data_;

	// Records TF_LBI_STATUS_* bits and represents the status of the this langbar
	// menu.
	DWORD status_;
	};

	// Represents the common operations for a button-menu item with an icon in the
	// language bar.
	class ImeIconButtonMenu : public ImeLangBarMenu {
	public:
	explicit ImeIconButtonMenu(LangBarCallback* langbar_callback,
	const GUID& guid,
	bool show_in_tray);

	// The IUnknown interface methods
	virtual STDMETHODIMP QueryInterface(REFIID guid, void** object);
	virtual STDMETHODIMP_(ULONG) AddRef();
	virtual STDMETHODIMP_(ULONG) Release();

	virtual STDMETHODIMP GetInfo(TF_LANGBARITEMINFO* item_info);

	// A part of the ITfLangBarItemButton interface methods
	virtual STDMETHODIMP InitMenu(ITfMenu* menu);
	virtual STDMETHODIMP OnMenuSelect(UINT menu_id);
	virtual STDMETHODIMP GetIcon(HICON* icon);

	// Initializes an ImeButtonMenu instance.
	// This function allocates resources for an ImeButtonMenu instance.
	HRESULT Init(HINSTANCE instance,
	UINT string_id,
	const ImeLangBarMenuItem* menu,
	int count,
	UINT menu_icon_id_for_non_theme,
	UINT menu_icon_id_for_theme);

	private:
	// Represents the reference count to an instance.
	// volatile modifier is added to conform with InterlockedIncrement API.
	volatile LONG reference_count_;

	// Represents the icon of the language bar menu.
	UINT menu_icon_id_for_theme_;
	UINT menu_icon_id_for_non_theme_;
	};

	// Represents the common operations for a toggle button-menu item in the
	// language bar.
	class ImeToggleButtonMenu
	: public ImeLangBarMenu,
	public IMozcToggleButtonMenu {
	public:
	explicit ImeToggleButtonMenu(LangBarCallback* langbar_callback,
	const GUID& guid,
	bool show_in_tray);
	~ImeToggleButtonMenu();

	// The IUnknown interface methods
	virtual STDMETHODIMP QueryInterface(REFIID guid, void** object);
	virtual STDMETHODIMP_(ULONG) AddRef();
	virtual STDMETHODIMP_(ULONG) Release();

	// The IToggleButtonMenu interface methods
	virtual STDMETHODIMP SelectMenuItem(UINT menu_id);

	virtual STDMETHODIMP GetInfo(TF_LANGBARITEMINFO* item_info);

	STDMETHODIMP InitMenu(ITfMenu* menu);
	STDMETHODIMP OnMenuSelect(UINT menu_id);
	STDMETHODIMP GetIcon(HICON* icon);

	// Initializes an ImeButtonMenu instance.
	// This function allocates resources for an ImeButtonMenu instance.
	HRESULT Init(HINSTANCE instance,
	int string_id,
	const ImeLangBarMenuItem* menu,
	int count);

	private:
	// Represents the reference count to an instance.
	// volatile modifier is added to conform with InterlockedIncrement API.
	volatile LONG reference_count_;

	// Represents the index of the selected menu item.
	UINT menu_selected_;
	};

	// Represents the common operations for a button-menu item in the system
	// language bar.
	class ImeSystemLangBarMenu
	: public ITfSystemLangBarItemSink {
	public:
	explicit ImeSystemLangBarMenu(LangBarCallback* langbar_callback,
	const GUID& guid);
	~ImeSystemLangBarMenu();

	// The IUnknown interface methods
	STDMETHODIMP QueryInterface(REFIID guid, void** object);
	STDMETHODIMP_(ULONG) AddRef(void);
	STDMETHODIMP_(ULONG) Release(void);

	// The ITfLangBarSystemItem interface methods
	STDMETHODIMP InitMenu(ITfMenu* menu);
	STDMETHODIMP OnMenuSelect(UINT menu_id);

	// Initializes an ImeButtonMenu instance.
	// This function allocates resources for an ImeButtonMenu instance.
	HRESULT Init(HINSTANCE instance,
	const ImeLangBarMenuItem* menu,
	int count);

	private:
	// Represents the reference count to an instance.
	// volatile modifier is added to conform with InterlockedIncrement API.
	volatile LONG reference_count_;

	LangBarCallback* langbar_callback_;

	// Represents the data possessed by the language bar menu.
	ImeLangBarMenuDataArray menu_data_;
	};

	#endif // MOZC_WIN32_IME_IME_LANGUAGE_BAR_MENU_H_