| // Copyright (c) 2012 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. |
| |
| #include "ui/base/ime/input_method_win.h" |
| |
| #include <stddef.h> |
| #include <stdint.h> |
| #include <cwctype> |
| |
| #include "base/auto_reset.h" |
| #include "base/command_line.h" |
| #include "ui/base/ime/ime_bridge.h" |
| #include "ui/base/ime/ime_engine_handler_interface.h" |
| #include "ui/base/ime/text_input_client.h" |
| #include "ui/base/ime/win/tsf_input_scope.h" |
| #include "ui/base/ui_base_switches.h" |
| #include "ui/display/win/screen_win.h" |
| #include "ui/events/event.h" |
| #include "ui/events/event_constants.h" |
| #include "ui/events/event_utils.h" |
| #include "ui/events/keycodes/keyboard_codes.h" |
| #include "ui/gfx/win/hwnd_util.h" |
| |
| namespace { |
| |
| ui::IMEEngineHandlerInterface* GetEngine() { |
| if (ui::IMEBridge::Get()) |
| return ui::IMEBridge::Get()->GetCurrentEngineHandler(); |
| return nullptr; |
| } |
| |
| } // namespace |
| |
| namespace ui { |
| namespace { |
| |
| // Extra number of chars before and after selection (or composition) range which |
| // is returned to IME for improving conversion accuracy. |
| static const size_t kExtraNumberOfChars = 20; |
| |
| } // namespace |
| |
| InputMethodWin::InputMethodWin(internal::InputMethodDelegate* delegate, |
| HWND toplevel_window_handle) |
| : toplevel_window_handle_(toplevel_window_handle), |
| pending_requested_direction_(base::i18n::UNKNOWN_DIRECTION), |
| accept_carriage_return_(false), |
| enabled_(false), |
| is_candidate_popup_open_(false), |
| composing_window_handle_(NULL), |
| weak_ptr_factory_(this) { |
| SetDelegate(delegate); |
| } |
| |
| InputMethodWin::~InputMethodWin() {} |
| |
| bool InputMethodWin::OnUntranslatedIMEMessage( |
| const base::NativeEvent& event, |
| InputMethod::NativeEventResult* result) { |
| LRESULT original_result = 0; |
| BOOL handled = FALSE; |
| |
| switch (event.message) { |
| case WM_IME_SETCONTEXT: |
| original_result = OnImeSetContext( |
| event.hwnd, event.message, event.wParam, event.lParam, &handled); |
| break; |
| case WM_IME_STARTCOMPOSITION: |
| original_result = OnImeStartComposition( |
| event.hwnd, event.message, event.wParam, event.lParam, &handled); |
| break; |
| case WM_IME_COMPOSITION: |
| original_result = OnImeComposition( |
| event.hwnd, event.message, event.wParam, event.lParam, &handled); |
| break; |
| case WM_IME_ENDCOMPOSITION: |
| original_result = OnImeEndComposition( |
| event.hwnd, event.message, event.wParam, event.lParam, &handled); |
| break; |
| case WM_IME_REQUEST: |
| original_result = OnImeRequest( |
| event.message, event.wParam, event.lParam, &handled); |
| break; |
| case WM_CHAR: |
| case WM_SYSCHAR: |
| original_result = OnChar(event.hwnd, event.message, event.wParam, |
| event.lParam, event, &handled); |
| break; |
| case WM_IME_NOTIFY: |
| original_result = OnImeNotify( |
| event.message, event.wParam, event.lParam, &handled); |
| break; |
| default: |
| NOTREACHED() << "Unknown IME message:" << event.message; |
| break; |
| } |
| if (result) |
| *result = original_result; |
| return !!handled; |
| } |
| |
| void InputMethodWin::DispatchKeyEvent(ui::KeyEvent* event) { |
| if (!event->HasNativeEvent()) { |
| DispatchFabricatedKeyEvent(event); |
| return; |
| } |
| |
| const base::NativeEvent& native_key_event = event->native_event(); |
| BOOL handled = FALSE; |
| if (native_key_event.message == WM_CHAR) { |
| OnChar(native_key_event.hwnd, native_key_event.message, |
| native_key_event.wParam, native_key_event.lParam, native_key_event, |
| &handled); |
| if (handled) |
| event->StopPropagation(); |
| return; |
| } |
| |
| std::vector<MSG> char_msgs; |
| if (!base::CommandLine::ForCurrentProcess()->HasSwitch( |
| switches::kDisableMergeKeyCharEvents)) { |
| // Combines the WM_KEY* and WM_CHAR messages in the event processing flow |
| // which is necessary to let Chrome IME extension to process the key event |
| // and perform corresponding IME actions. |
| // Chrome IME extension may wants to consume certain key events based on |
| // the character information of WM_CHAR messages. Holding WM_KEY* messages |
| // until WM_CHAR is processed by the IME extension is not feasible because |
| // there is no way to know wether there will or not be a WM_CHAR following |
| // the WM_KEY*. |
| // Chrome never handles dead chars so it is safe to remove/ignore |
| // WM_*DEADCHAR messages. |
| MSG msg; |
| while (::PeekMessage(&msg, native_key_event.hwnd, WM_CHAR, WM_DEADCHAR, |
| PM_REMOVE)) { |
| if (msg.message == WM_CHAR) |
| char_msgs.push_back(msg); |
| } |
| while (::PeekMessage(&msg, native_key_event.hwnd, WM_SYSCHAR, |
| WM_SYSDEADCHAR, PM_REMOVE)) { |
| if (msg.message == WM_SYSCHAR) |
| char_msgs.push_back(msg); |
| } |
| } |
| |
| // Handles ctrl-shift key to change text direction and layout alignment. |
| if (ui::IMM32Manager::IsRTLKeyboardLayoutInstalled() && |
| !IsTextInputTypeNone()) { |
| // TODO: shouldn't need to generate a KeyEvent here. |
| const ui::KeyEvent key(native_key_event); |
| ui::KeyboardCode code = key.key_code(); |
| if (key.type() == ui::ET_KEY_PRESSED) { |
| if (code == ui::VKEY_SHIFT) { |
| base::i18n::TextDirection dir; |
| if (ui::IMM32Manager::IsCtrlShiftPressed(&dir)) |
| pending_requested_direction_ = dir; |
| } else if (code != ui::VKEY_CONTROL) { |
| pending_requested_direction_ = base::i18n::UNKNOWN_DIRECTION; |
| } |
| } else if (key.type() == ui::ET_KEY_RELEASED && |
| (code == ui::VKEY_SHIFT || code == ui::VKEY_CONTROL) && |
| pending_requested_direction_ != base::i18n::UNKNOWN_DIRECTION) { |
| GetTextInputClient()->ChangeTextDirectionAndLayoutAlignment( |
| pending_requested_direction_); |
| pending_requested_direction_ = base::i18n::UNKNOWN_DIRECTION; |
| } |
| } |
| |
| // If only 1 WM_CHAR per the key event, set it as the character of it. |
| if (char_msgs.size() == 1 && |
| !std::iswcntrl(static_cast<wint_t>(char_msgs[0].wParam))) |
| event->set_character(static_cast<base::char16>(char_msgs[0].wParam)); |
| |
| // Dispatches the key events to the Chrome IME extension which is listening to |
| // key events on the following two situations: |
| // 1) |char_msgs| is empty when the event is non-character key. |
| // 2) |char_msgs|.size() == 1 when the event is character key and the WM_CHAR |
| // messages have been combined in the event processing flow. |
| if (!base::CommandLine::ForCurrentProcess()->HasSwitch( |
| switches::kDisableMergeKeyCharEvents) && |
| char_msgs.size() <= 1 && GetEngine() && |
| GetEngine()->IsInterestedInKeyEvent()) { |
| ui::IMEEngineHandlerInterface::KeyEventDoneCallback callback = base::Bind( |
| &InputMethodWin::ProcessKeyEventDone, weak_ptr_factory_.GetWeakPtr(), |
| base::Owned(new ui::KeyEvent(*event)), |
| base::Owned(new std::vector<MSG>(char_msgs))); |
| GetEngine()->ProcessKeyEvent(*event, callback); |
| } else { |
| ProcessKeyEventDone(event, &char_msgs, false); |
| } |
| } |
| |
| void InputMethodWin::ProcessKeyEventDone(ui::KeyEvent* event, |
| const std::vector<MSG>* char_msgs, |
| bool is_handled) { |
| DCHECK(event); |
| if (is_handled) |
| return; |
| |
| ui::EventDispatchDetails details = DispatchKeyEventPostIME(event); |
| if (details.dispatcher_destroyed || details.target_destroyed || |
| event->stopped_propagation()) { |
| return; |
| } |
| |
| BOOL handled; |
| for (const auto& msg : (*char_msgs)) |
| OnChar(msg.hwnd, msg.message, msg.wParam, msg.lParam, msg, &handled); |
| } |
| |
| void InputMethodWin::OnTextInputTypeChanged(const TextInputClient* client) { |
| if (!IsTextInputClientFocused(client) || !IsWindowFocused(client)) |
| return; |
| imm32_manager_.CancelIME(toplevel_window_handle_); |
| UpdateIMEState(); |
| } |
| |
| void InputMethodWin::OnCaretBoundsChanged(const TextInputClient* client) { |
| if (!IsTextInputClientFocused(client) || !IsWindowFocused(client)) |
| return; |
| TextInputType text_input_type = GetTextInputType(); |
| if (client == GetTextInputClient() && |
| text_input_type != TEXT_INPUT_TYPE_NONE && |
| text_input_type != TEXT_INPUT_TYPE_PASSWORD && GetEngine()) { |
| // |enabled_| == false could be faked, and the engine should rely on the |
| // real type from GetTextInputType(). |
| GetEngine()->SetCompositionBounds(GetCompositionBounds(client)); |
| } |
| if (!enabled_) |
| return; |
| |
| // The current text input type should not be NONE if |client| is focused. |
| DCHECK(!IsTextInputTypeNone()); |
| // Tentatively assume that the returned value is DIP (Density Independent |
| // Pixel). See the comment in text_input_client.h and http://crbug.com/360334. |
| const gfx::Rect dip_screen_bounds(GetTextInputClient()->GetCaretBounds()); |
| const gfx::Rect screen_bounds = |
| display::win::ScreenWin::DIPToScreenRect(toplevel_window_handle_, |
| dip_screen_bounds); |
| |
| HWND attached_window = toplevel_window_handle_; |
| // TODO(ime): see comment in TextInputClient::GetCaretBounds(), this |
| // conversion shouldn't be necessary. |
| RECT r = {}; |
| GetClientRect(attached_window, &r); |
| POINT window_point = { screen_bounds.x(), screen_bounds.y() }; |
| ScreenToClient(attached_window, &window_point); |
| gfx::Rect caret_rect(gfx::Point(window_point.x, window_point.y), |
| screen_bounds.size()); |
| imm32_manager_.UpdateCaretRect(attached_window, caret_rect); |
| } |
| |
| void InputMethodWin::CancelComposition(const TextInputClient* client) { |
| if (IsTextInputClientFocused(client)) { |
| // |enabled_| == false could be faked, and the engine should rely on the |
| // real type get from GetTextInputType(). |
| TextInputType text_input_type = GetTextInputType(); |
| if (text_input_type != TEXT_INPUT_TYPE_NONE && |
| text_input_type != TEXT_INPUT_TYPE_PASSWORD && GetEngine()) { |
| GetEngine()->Reset(); |
| } |
| |
| if (enabled_) |
| imm32_manager_.CancelIME(toplevel_window_handle_); |
| } |
| } |
| |
| void InputMethodWin::OnInputLocaleChanged() { |
| // Note: OnInputLocaleChanged() is for crbug.com/168971. |
| OnInputMethodChanged(); |
| } |
| |
| std::string InputMethodWin::GetInputLocale() { |
| return imm32_manager_.GetInputLanguageName(); |
| } |
| |
| bool InputMethodWin::IsCandidatePopupOpen() const { |
| return is_candidate_popup_open_; |
| } |
| |
| void InputMethodWin::OnWillChangeFocusedClient(TextInputClient* focused_before, |
| TextInputClient* focused) { |
| if (IsWindowFocused(focused_before)) |
| ConfirmCompositionText(); |
| } |
| |
| void InputMethodWin::OnDidChangeFocusedClient( |
| TextInputClient* focused_before, |
| TextInputClient* focused) { |
| if (IsWindowFocused(focused)) { |
| // Force to update the input type since client's TextInputStateChanged() |
| // function might not be called if text input types before the client loses |
| // focus and after it acquires focus again are the same. |
| OnTextInputTypeChanged(focused); |
| |
| // Force to update caret bounds, in case the client thinks that the caret |
| // bounds has not changed. |
| OnCaretBoundsChanged(focused); |
| } |
| if (focused_before != focused) |
| accept_carriage_return_ = false; |
| } |
| |
| LRESULT InputMethodWin::OnChar(HWND window_handle, |
| UINT message, |
| WPARAM wparam, |
| LPARAM lparam, |
| const base::NativeEvent& event, |
| BOOL* handled) { |
| *handled = TRUE; |
| |
| // We need to send character events to the focused text input client event if |
| // its text input type is ui::TEXT_INPUT_TYPE_NONE. |
| if (GetTextInputClient()) { |
| const base::char16 kCarriageReturn = L'\r'; |
| const base::char16 ch = static_cast<base::char16>(wparam); |
| // A mask to determine the previous key state from |lparam|. The value is 1 |
| // if the key is down before the message is sent, or it is 0 if the key is |
| // up. |
| const uint32_t kPrevKeyDownBit = 0x40000000; |
| if (ch == kCarriageReturn && !(lparam & kPrevKeyDownBit)) |
| accept_carriage_return_ = true; |
| // Conditionally ignore '\r' events to work around crbug.com/319100. |
| // TODO(yukawa, IME): Figure out long-term solution. |
| if (ch != kCarriageReturn || accept_carriage_return_) { |
| ui::KeyEvent char_event(event); |
| GetTextInputClient()->InsertChar(char_event); |
| } |
| } |
| |
| // Explicitly show the system menu at a good location on [Alt]+[Space]. |
| // Note: Setting |handled| to FALSE for DefWindowProc triggering of the system |
| // menu causes undesirable titlebar artifacts in the classic theme. |
| if (message == WM_SYSCHAR && wparam == VK_SPACE) |
| gfx::ShowSystemMenu(window_handle); |
| |
| return 0; |
| } |
| |
| LRESULT InputMethodWin::OnImeSetContext(HWND window_handle, |
| UINT message, |
| WPARAM wparam, |
| LPARAM lparam, |
| BOOL* handled) { |
| if (!!wparam) { |
| imm32_manager_.CreateImeWindow(window_handle); |
| // Delay initialize the tsf to avoid perf regression. |
| // Loading tsf dll causes some time, so doing it in UpdateIMEState() will |
| // slow down the browser window creation. |
| // See crbug.com/509984. |
| tsf_inputscope::InitializeTsfForInputScopes(); |
| tsf_inputscope::SetInputScopeForTsfUnawareWindow( |
| toplevel_window_handle_, GetTextInputType(), GetTextInputMode()); |
| } |
| |
| OnInputMethodChanged(); |
| return imm32_manager_.SetImeWindowStyle( |
| window_handle, message, wparam, lparam, handled); |
| } |
| |
| LRESULT InputMethodWin::OnImeStartComposition(HWND window_handle, |
| UINT message, |
| WPARAM wparam, |
| LPARAM lparam, |
| BOOL* handled) { |
| // We have to prevent WTL from calling ::DefWindowProc() because the function |
| // calls ::ImmSetCompositionWindow() and ::ImmSetCandidateWindow() to |
| // over-write the position of IME windows. |
| *handled = TRUE; |
| |
| // Reset the composition status and create IME windows. |
| composing_window_handle_ = window_handle; |
| imm32_manager_.CreateImeWindow(window_handle); |
| imm32_manager_.ResetComposition(window_handle); |
| return 0; |
| } |
| |
| LRESULT InputMethodWin::OnImeComposition(HWND window_handle, |
| UINT message, |
| WPARAM wparam, |
| LPARAM lparam, |
| BOOL* handled) { |
| // We have to prevent WTL from calling ::DefWindowProc() because we do not |
| // want for the IMM (Input Method Manager) to send WM_IME_CHAR messages. |
| *handled = TRUE; |
| |
| // At first, update the position of the IME window. |
| imm32_manager_.UpdateImeWindow(window_handle); |
| |
| // Retrieve the result string and its attributes of the ongoing composition |
| // and send it to a renderer process. |
| ui::CompositionText composition; |
| if (imm32_manager_.GetResult(window_handle, lparam, &composition.text)) { |
| if (!IsTextInputTypeNone()) |
| GetTextInputClient()->InsertText(composition.text); |
| imm32_manager_.ResetComposition(window_handle); |
| // Fall though and try reading the composition string. |
| // Japanese IMEs send a message containing both GCS_RESULTSTR and |
| // GCS_COMPSTR, which means an ongoing composition has been finished |
| // by the start of another composition. |
| } |
| // Retrieve the composition string and its attributes of the ongoing |
| // composition and send it to a renderer process. |
| if (imm32_manager_.GetComposition(window_handle, lparam, &composition) && |
| !IsTextInputTypeNone()) |
| GetTextInputClient()->SetCompositionText(composition); |
| |
| return 0; |
| } |
| |
| LRESULT InputMethodWin::OnImeEndComposition(HWND window_handle, |
| UINT message, |
| WPARAM wparam, |
| LPARAM lparam, |
| BOOL* handled) { |
| // Let WTL call ::DefWindowProc() and release its resources. |
| *handled = FALSE; |
| |
| composing_window_handle_ = NULL; |
| |
| if (!IsTextInputTypeNone() && GetTextInputClient()->HasCompositionText()) |
| GetTextInputClient()->ClearCompositionText(); |
| |
| imm32_manager_.ResetComposition(window_handle); |
| imm32_manager_.DestroyImeWindow(window_handle); |
| return 0; |
| } |
| |
| LRESULT InputMethodWin::OnImeNotify(UINT message, |
| WPARAM wparam, |
| LPARAM lparam, |
| BOOL* handled) { |
| *handled = FALSE; |
| |
| // Update |is_candidate_popup_open_|, whether a candidate window is open. |
| switch (wparam) { |
| case IMN_OPENCANDIDATE: |
| is_candidate_popup_open_ = true; |
| break; |
| case IMN_CLOSECANDIDATE: |
| is_candidate_popup_open_ = false; |
| break; |
| } |
| |
| return 0; |
| } |
| |
| LRESULT InputMethodWin::OnImeRequest(UINT message, |
| WPARAM wparam, |
| LPARAM lparam, |
| BOOL* handled) { |
| *handled = FALSE; |
| |
| // Should not receive WM_IME_REQUEST message, if IME is disabled. |
| const ui::TextInputType type = GetTextInputType(); |
| if (type == ui::TEXT_INPUT_TYPE_NONE || |
| type == ui::TEXT_INPUT_TYPE_PASSWORD) { |
| return 0; |
| } |
| |
| switch (wparam) { |
| case IMR_RECONVERTSTRING: |
| *handled = TRUE; |
| return OnReconvertString(reinterpret_cast<RECONVERTSTRING*>(lparam)); |
| case IMR_DOCUMENTFEED: |
| *handled = TRUE; |
| return OnDocumentFeed(reinterpret_cast<RECONVERTSTRING*>(lparam)); |
| case IMR_QUERYCHARPOSITION: |
| *handled = TRUE; |
| return OnQueryCharPosition(reinterpret_cast<IMECHARPOSITION*>(lparam)); |
| default: |
| return 0; |
| } |
| } |
| |
| LRESULT InputMethodWin::OnDocumentFeed(RECONVERTSTRING* reconv) { |
| ui::TextInputClient* client = GetTextInputClient(); |
| if (!client) |
| return 0; |
| |
| gfx::Range text_range; |
| if (!client->GetTextRange(&text_range) || text_range.is_empty()) |
| return 0; |
| |
| bool result = false; |
| gfx::Range target_range; |
| if (client->HasCompositionText()) |
| result = client->GetCompositionTextRange(&target_range); |
| |
| if (!result || target_range.is_empty()) { |
| if (!client->GetSelectionRange(&target_range) || |
| !target_range.IsValid()) { |
| return 0; |
| } |
| } |
| |
| if (!text_range.Contains(target_range)) |
| return 0; |
| |
| if (target_range.GetMin() - text_range.start() > kExtraNumberOfChars) |
| text_range.set_start(target_range.GetMin() - kExtraNumberOfChars); |
| |
| if (text_range.end() - target_range.GetMax() > kExtraNumberOfChars) |
| text_range.set_end(target_range.GetMax() + kExtraNumberOfChars); |
| |
| size_t len = text_range.length(); |
| size_t need_size = sizeof(RECONVERTSTRING) + len * sizeof(WCHAR); |
| |
| if (!reconv) |
| return need_size; |
| |
| if (reconv->dwSize < need_size) |
| return 0; |
| |
| base::string16 text; |
| if (!GetTextInputClient()->GetTextFromRange(text_range, &text)) |
| return 0; |
| DCHECK_EQ(text_range.length(), text.length()); |
| |
| reconv->dwVersion = 0; |
| reconv->dwStrLen = len; |
| reconv->dwStrOffset = sizeof(RECONVERTSTRING); |
| reconv->dwCompStrLen = |
| client->HasCompositionText() ? target_range.length() : 0; |
| reconv->dwCompStrOffset = |
| (target_range.GetMin() - text_range.start()) * sizeof(WCHAR); |
| reconv->dwTargetStrLen = target_range.length(); |
| reconv->dwTargetStrOffset = reconv->dwCompStrOffset; |
| |
| memcpy((char*)reconv + sizeof(RECONVERTSTRING), |
| text.c_str(), len * sizeof(WCHAR)); |
| |
| // According to Microsoft API document, IMR_RECONVERTSTRING and |
| // IMR_DOCUMENTFEED should return reconv, but some applications return |
| // need_size. |
| return reinterpret_cast<LRESULT>(reconv); |
| } |
| |
| LRESULT InputMethodWin::OnReconvertString(RECONVERTSTRING* reconv) { |
| ui::TextInputClient* client = GetTextInputClient(); |
| if (!client) |
| return 0; |
| |
| // If there is a composition string already, we don't allow reconversion. |
| if (client->HasCompositionText()) |
| return 0; |
| |
| gfx::Range text_range; |
| if (!client->GetTextRange(&text_range) || text_range.is_empty()) |
| return 0; |
| |
| gfx::Range selection_range; |
| if (!client->GetSelectionRange(&selection_range) || |
| selection_range.is_empty()) { |
| return 0; |
| } |
| |
| DCHECK(text_range.Contains(selection_range)); |
| |
| size_t len = selection_range.length(); |
| size_t need_size = sizeof(RECONVERTSTRING) + len * sizeof(WCHAR); |
| |
| if (!reconv) |
| return need_size; |
| |
| if (reconv->dwSize < need_size) |
| return 0; |
| |
| // TODO(penghuang): Return some extra context to help improve IME's |
| // reconversion accuracy. |
| base::string16 text; |
| if (!GetTextInputClient()->GetTextFromRange(selection_range, &text)) |
| return 0; |
| DCHECK_EQ(selection_range.length(), text.length()); |
| |
| reconv->dwVersion = 0; |
| reconv->dwStrLen = len; |
| reconv->dwStrOffset = sizeof(RECONVERTSTRING); |
| reconv->dwCompStrLen = len; |
| reconv->dwCompStrOffset = 0; |
| reconv->dwTargetStrLen = len; |
| reconv->dwTargetStrOffset = 0; |
| |
| memcpy(reinterpret_cast<char*>(reconv) + sizeof(RECONVERTSTRING), |
| text.c_str(), len * sizeof(WCHAR)); |
| |
| // According to Microsoft API document, IMR_RECONVERTSTRING and |
| // IMR_DOCUMENTFEED should return reconv, but some applications return |
| // need_size. |
| return reinterpret_cast<LRESULT>(reconv); |
| } |
| |
| LRESULT InputMethodWin::OnQueryCharPosition(IMECHARPOSITION* char_positon) { |
| if (!char_positon) |
| return 0; |
| |
| if (char_positon->dwSize < sizeof(IMECHARPOSITION)) |
| return 0; |
| |
| ui::TextInputClient* client = GetTextInputClient(); |
| if (!client) |
| return 0; |
| |
| // Tentatively assume that the returned value from |client| is DIP (Density |
| // Independent Pixel). See the comment in text_input_client.h and |
| // http://crbug.com/360334. |
| gfx::Rect dip_rect; |
| if (client->HasCompositionText()) { |
| if (!client->GetCompositionCharacterBounds(char_positon->dwCharPos, |
| &dip_rect)) { |
| return 0; |
| } |
| } else { |
| // If there is no composition and the first character is queried, returns |
| // the caret bounds. This behavior is the same to that of RichEdit control. |
| if (char_positon->dwCharPos != 0) |
| return 0; |
| dip_rect = client->GetCaretBounds(); |
| } |
| const gfx::Rect rect = |
| display::win::ScreenWin::DIPToScreenRect(toplevel_window_handle_, |
| dip_rect); |
| |
| char_positon->pt.x = rect.x(); |
| char_positon->pt.y = rect.y(); |
| char_positon->cLineHeight = rect.height(); |
| return 1; // returns non-zero value when succeeded. |
| } |
| |
| bool InputMethodWin::IsWindowFocused(const TextInputClient* client) const { |
| if (!client) |
| return false; |
| // When Aura is enabled, |attached_window_handle| should always be a top-level |
| // window. So we can safely assume that |attached_window_handle| is ready for |
| // receiving keyboard input as long as it is an active window. This works well |
| // even when the |attached_window_handle| becomes active but has not received |
| // WM_FOCUS yet. |
| return toplevel_window_handle_ && |
| GetActiveWindow() == toplevel_window_handle_; |
| } |
| |
| void InputMethodWin::DispatchFabricatedKeyEvent(ui::KeyEvent* event) { |
| // The key event if from calling input.ime.sendKeyEvent or test. |
| ui::EventDispatchDetails details = DispatchKeyEventPostIME(event); |
| if (details.dispatcher_destroyed || details.target_destroyed || |
| event->stopped_propagation()) { |
| return; |
| } |
| |
| if ((event->is_char() || event->GetDomKey().IsCharacter()) && |
| event->type() == ui::ET_KEY_PRESSED && GetTextInputClient()) |
| GetTextInputClient()->InsertChar(*event); |
| } |
| |
| void InputMethodWin::ConfirmCompositionText() { |
| if (composing_window_handle_) |
| imm32_manager_.CleanupComposition(composing_window_handle_); |
| |
| // Though above line should confirm the client's composition text by sending a |
| // result text to us, in case the input method and the client are in |
| // inconsistent states, we check the client's composition state again. |
| if (!IsTextInputTypeNone() && GetTextInputClient()->HasCompositionText()) { |
| GetTextInputClient()->ConfirmCompositionText(); |
| |
| if (GetEngine()) |
| GetEngine()->Reset(); |
| } |
| } |
| |
| void InputMethodWin::UpdateIMEState() { |
| // Use switch here in case we are going to add more text input types. |
| // We disable input method in password field. |
| const HWND window_handle = toplevel_window_handle_; |
| const TextInputType text_input_type = |
| (GetEngine() && GetEngine()->IsInterestedInKeyEvent()) |
| ? TEXT_INPUT_TYPE_NONE |
| : GetTextInputType(); |
| const TextInputMode text_input_mode = GetTextInputMode(); |
| switch (text_input_type) { |
| case ui::TEXT_INPUT_TYPE_NONE: |
| case ui::TEXT_INPUT_TYPE_PASSWORD: |
| imm32_manager_.DisableIME(window_handle); |
| enabled_ = false; |
| break; |
| default: |
| imm32_manager_.EnableIME(window_handle); |
| enabled_ = true; |
| break; |
| } |
| |
| imm32_manager_.SetTextInputMode(window_handle, text_input_mode); |
| tsf_inputscope::SetInputScopeForTsfUnawareWindow( |
| window_handle, text_input_type, text_input_mode); |
| |
| if (!ui::IMEBridge::Get()) // IMEBridge could be null for tests. |
| return; |
| |
| const TextInputType old_text_input_type = |
| ui::IMEBridge::Get()->GetCurrentInputContext().type; |
| ui::IMEEngineHandlerInterface::InputContext context( |
| GetTextInputType(), GetTextInputMode(), GetTextInputFlags()); |
| ui::IMEBridge::Get()->SetCurrentInputContext(context); |
| |
| ui::IMEEngineHandlerInterface* engine = GetEngine(); |
| if (engine) { |
| if (old_text_input_type != ui::TEXT_INPUT_TYPE_NONE) |
| engine->FocusOut(); |
| if (GetTextInputType() != ui::TEXT_INPUT_TYPE_NONE) |
| engine->FocusIn(context); |
| } |
| } |
| |
| } // namespace ui |
