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// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_BASE_IME_INPUT_METHOD_IMM32_H_
#define UI_BASE_IME_INPUT_METHOD_IMM32_H_
#include <windows.h>
#include <string>
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "ui/base/ime/input_method_win.h"
namespace ui {
// An InputMethod implementation based on Windows IMM32 API.
class UI_EXPORT InputMethodIMM32 : public InputMethodWin {
public:
InputMethodIMM32(internal::InputMethodDelegate* delegate,
HWND toplevel_window_handle);
// Overridden from InputMethod:
virtual void OnFocus() OVERRIDE;
virtual void OnBlur() OVERRIDE;
virtual bool OnUntranslatedIMEMessage(const base::NativeEvent& event,
NativeEventResult* result) OVERRIDE;
virtual void OnTextInputTypeChanged(const TextInputClient* client) OVERRIDE;
virtual void OnCaretBoundsChanged(const TextInputClient* client) OVERRIDE;
virtual void CancelComposition(const TextInputClient* client) OVERRIDE;
virtual bool IsCandidatePopupOpen() const OVERRIDE;
protected:
// Overridden from InputMethodBase:
virtual void OnWillChangeFocusedClient(TextInputClient* focused_before,
TextInputClient* focused) OVERRIDE;
virtual void OnDidChangeFocusedClient(TextInputClient* focused_before,
TextInputClient* focused) OVERRIDE;
private:
LRESULT OnImeSetContext(HWND window_handle,
UINT message,
WPARAM wparam,
LPARAM lparam,
BOOL* handled);
LRESULT OnImeStartComposition(HWND window_handle,
UINT message,
WPARAM wparam,
LPARAM lparam,
BOOL* handled);
LRESULT OnImeComposition(HWND window_handle,
UINT message,
WPARAM wparam,
LPARAM lparam,
BOOL* handled);
LRESULT OnImeEndComposition(HWND window_handle,
UINT message,
WPARAM wparam,
LPARAM lparam,
BOOL* handled);
LRESULT OnImeNotify(UINT message,
WPARAM wparam,
LPARAM lparam,
BOOL* handled);
// Asks the client to confirm current composition text.
void ConfirmCompositionText();
// Enables or disables the IME according to the current text input type.
void UpdateIMEState();
bool enabled_;
// True if we know for sure that a candidate window is open.
bool is_candidate_popup_open_;
// Window handle where composition is on-going. NULL when there is no
// composition.
HWND composing_window_handle_;
DISALLOW_COPY_AND_ASSIGN(InputMethodIMM32);
};
} // namespace ui
#endif // UI_BASE_IME_INPUT_METHOD_IMM32_H_
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