| // 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_INPUT_METHOD_WIN_H_ |
| #define UI_BASE_IME_INPUT_METHOD_WIN_H_ |
| |
| #include <windows.h> |
| |
| #include <string> |
| |
| #include "base/basictypes.h" |
| #include "base/compiler_specific.h" |
| #include "ui/base/ime/input_method_base.h" |
| #include "ui/base/ime/win/imm32_manager.h" |
| |
| namespace ui { |
| |
| // A common InputMethod implementation based on IMM32. |
| class UI_BASE_EXPORT InputMethodWin : public InputMethodBase { |
| public: |
| InputMethodWin(internal::InputMethodDelegate* delegate, |
| HWND toplevel_window_handle); |
| |
| // Overridden from InputMethod: |
| virtual void Init(bool focused) OVERRIDE; |
| virtual void OnFocus() OVERRIDE; |
| virtual void OnBlur() OVERRIDE; |
| virtual bool OnUntranslatedIMEMessage(const base::NativeEvent& event, |
| NativeEventResult* result) OVERRIDE; |
| virtual bool DispatchKeyEvent(const ui::KeyEvent& event) OVERRIDE; |
| virtual void OnTextInputTypeChanged(const TextInputClient* client) OVERRIDE; |
| virtual void OnCaretBoundsChanged(const TextInputClient* client) OVERRIDE; |
| virtual void CancelComposition(const TextInputClient* client) OVERRIDE; |
| virtual void OnInputLocaleChanged() OVERRIDE; |
| virtual std::string GetInputLocale() OVERRIDE; |
| virtual bool IsActive() OVERRIDE; |
| virtual bool IsCandidatePopupOpen() const OVERRIDE; |
| |
| protected: |
| // Overridden from InputMethodBase: |
| // If a derived class overrides this method, it should call parent's |
| // implementation. |
| virtual void OnWillChangeFocusedClient(TextInputClient* focused_before, |
| TextInputClient* focused) OVERRIDE; |
| virtual void OnDidChangeFocusedClient(TextInputClient* focused_before, |
| TextInputClient* focused) OVERRIDE; |
| |
| private: |
| // For both WM_CHAR and WM_SYSCHAR |
| LRESULT OnChar(HWND window_handle, |
| UINT message, |
| WPARAM wparam, |
| LPARAM lparam, |
| BOOL* handled); |
| |
| 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); |
| |
| // Some IMEs rely on WM_IME_REQUEST message even when TSF is enabled. So |
| // OnImeRequest (and its actual implementations as OnDocumentFeed, |
| // OnReconvertString, and OnQueryCharPosition) are placed in this base class. |
| LRESULT OnImeRequest(UINT message, |
| WPARAM wparam, |
| LPARAM lparam, |
| BOOL* handled); |
| LRESULT OnDocumentFeed(RECONVERTSTRING* reconv); |
| LRESULT OnReconvertString(RECONVERTSTRING* reconv); |
| LRESULT OnQueryCharPosition(IMECHARPOSITION* char_positon); |
| |
| // Returns the window handle to which |text_input_client| is bound. |
| // On Aura environment, |toplevel_window_handle_| is always returned. |
| HWND GetAttachedWindowHandle(const TextInputClient* text_input_client) const; |
| |
| // Returns true if the Win32 native window bound to |client| is considered |
| // to be ready for receiving keyboard input. |
| bool IsWindowFocused(const TextInputClient* client) const; |
| |
| bool DispatchFabricatedKeyEvent(const ui::KeyEvent& event); |
| |
| // Asks the client to confirm current composition text. |
| void ConfirmCompositionText(); |
| |
| // Enables or disables the IME according to the current text input type. |
| void UpdateIMEState(); |
| |
| // Windows IMM32 wrapper. |
| // (See "ui/base/ime/win/ime_input.h" for its details.) |
| ui::IMM32Manager imm32_manager_; |
| |
| // The toplevel window handle. |
| // On non-Aura environment, this value is not used and always NULL. |
| const HWND toplevel_window_handle_; |
| |
| // Name of the current input locale. |
| std::string locale_; |
| |
| // The new text direction and layout alignment requested by the user by |
| // pressing ctrl-shift. It'll be sent to the text input client when the key |
| // is released. |
| base::i18n::TextDirection pending_requested_direction_; |
| |
| // Represents if WM_CHAR[wparam=='\r'] should be dispatched to the focused |
| // text input client or ignored silently. This flag is introduced as a quick |
| // workaround against crbug.com/319100 |
| // TODO(yukawa, IME): Figure out long-term solution. |
| bool accept_carriage_return_; |
| |
| // Indicates if the current input locale has an IME. |
| bool active_; |
| |
| // 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(InputMethodWin); |
| }; |
| |
| } // namespace ui |
| |
| #endif // UI_BASE_IME_INPUT_METHOD_WIN_H_ |