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// Copyright (c) 2011 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_WIN_INPUT_METHOD_WIN_IMM32_H_
#define UI_BASE_IME_WIN_INPUT_METHOD_WIN_IMM32_H_
#include <windows.h>
#include <string>
#include "base/compiler_specific.h"
#include "base/component_export.h"
#include "base/macros.h"
#include "ui/base/ime/win/imm32_manager.h"
#include "ui/base/ime/win/input_method_win_base.h"
namespace ui {
// A common InputMethod implementation based on IMM32.
class COMPONENT_EXPORT(UI_BASE_IME_WIN) InputMethodWinImm32
: public InputMethodWinBase {
public:
InputMethodWinImm32(internal::InputMethodDelegate* delegate,
HWND toplevel_window_handle);
~InputMethodWinImm32() override;
// Overridden from InputMethodBase:
void OnFocus() override;
// Overridden from InputMethod:
bool OnUntranslatedIMEMessage(const MSG event,
NativeEventResult* result) override;
void OnTextInputTypeChanged(const TextInputClient* client) override;
void OnCaretBoundsChanged(const TextInputClient* client) override;
void CancelComposition(const TextInputClient* client) override;
void OnInputLocaleChanged() override;
bool IsInputLocaleCJK() const override;
bool IsCandidatePopupOpen() const override;
protected:
// Overridden from InputMethodBase:
// If a derived class overrides this method, it should call parent's
// implementation.
void OnWillChangeFocusedClient(TextInputClient* focused_before,
TextInputClient* focused) override;
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);
void RefreshInputLanguage();
// Enables or disables the IME according to the current text input type.
void UpdateIMEState();
void ConfirmCompositionText();
// Windows IMM32 wrapper.
// (See "ui/base/ime/win/ime_input.h" for its details.)
ui::IMM32Manager imm32_manager_;
// True when an IME should be allowed to process key events.
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(InputMethodWinImm32);
};
} // namespace ui
#endif // UI_BASE_IME_WIN_INPUT_METHOD_WIN_IMM32_H_
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