ui/base/ime/input_method_win.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ui/base/ime/input_method_win.h"
   6
   7 #include "base/basictypes.h"
   8 #include "ui/base/ime/text_input_client.h"
   9 #include "ui/base/ime/win/tsf_input_scope.h"
  10 #include "ui/events/event.h"
  11 #include "ui/events/event_constants.h"
  12 #include "ui/events/event_utils.h"
  13 #include "ui/events/keycodes/keyboard_codes.h"
  14 #include "ui/gfx/win/dpi.h"
  15 #include "ui/gfx/win/hwnd_util.h"
  16
  17 namespace ui {
  18 namespace {
  19
  20 // Extra number of chars before and after selection (or composition) range which
  21 // is returned to IME for improving conversion accuracy.
  22 static const size_t kExtraNumberOfChars = 20;
  23
  24 }  // namespace
  25
  26 InputMethodWin::InputMethodWin(internal::InputMethodDelegate* delegate,
  27                                HWND toplevel_window_handle)
  28     : toplevel_window_handle_(toplevel_window_handle),
  29       pending_requested_direction_(base::i18n::UNKNOWN_DIRECTION),
  30       accept_carriage_return_(false),
  31       active_(false),
  32       enabled_(false),
  33       is_candidate_popup_open_(false),
  34       composing_window_handle_(NULL) {
  35   SetDelegate(delegate);
  36   // In non-Aura environment, appropriate callbacks to OnFocus() and OnBlur()
  37   // are not implemented yet. To work around this limitation, here we use
  38   // "always focused" model.
  39   // TODO(ime): Fix the caller of OnFocus() and OnBlur() so that appropriate
  40   // focus event will be passed.
  41   InputMethodBase::OnFocus();
  42 }
  43
  44 void InputMethodWin::Init(bool focused) {
  45   // Gets the initial input locale.
  46   OnInputLocaleChanged();
  47
  48   InputMethodBase::Init(focused);
  49 }
  50
  51 void InputMethodWin::OnFocus() {
  52   // Ignore OnFocus event for "always focused" model. See the comment in the
  53   // constructor.
  54   // TODO(ime): Implement OnFocus once the callers are fixed.
  55 }
  56
  57 void InputMethodWin::OnBlur() {
  58   // Ignore OnBlur event for "always focused" model. See the comment in the
  59   // constructor.
  60   // TODO(ime): Implement OnFocus once the callers are fixed.
  61 }
  62
  63 bool InputMethodWin::OnUntranslatedIMEMessage(
  64     const base::NativeEvent& event,
  65     InputMethod::NativeEventResult* result) {
  66   LRESULT original_result = 0;
  67   BOOL handled = FALSE;
  68   switch (event.message) {
  69     case WM_IME_SETCONTEXT:
  70       original_result = OnImeSetContext(
  71           event.hwnd, event.message, event.wParam, event.lParam, &handled);
  72       break;
  73     case WM_IME_STARTCOMPOSITION:
  74       original_result = OnImeStartComposition(
  75           event.hwnd, event.message, event.wParam, event.lParam, &handled);
  76       break;
  77     case WM_IME_COMPOSITION:
  78       original_result = OnImeComposition(
  79           event.hwnd, event.message, event.wParam, event.lParam, &handled);
  80       break;
  81     case WM_IME_ENDCOMPOSITION:
  82       original_result = OnImeEndComposition(
  83           event.hwnd, event.message, event.wParam, event.lParam, &handled);
  84       break;
  85     case WM_IME_REQUEST:
  86       original_result = OnImeRequest(
  87           event.message, event.wParam, event.lParam, &handled);
  88       break;
  89     case WM_CHAR:
  90     case WM_SYSCHAR:
  91       original_result = OnChar(
  92           event.hwnd, event.message, event.wParam, event.lParam, &handled);
  93       break;
  94     case WM_IME_NOTIFY:
  95       original_result = OnImeNotify(
  96           event.message, event.wParam, event.lParam, &handled);
  97       break;
  98     default:
  99       NOTREACHED() << "Unknown IME message:" << event.message;
 100       break;
 101   }
 102   if (result)
 103     *result = original_result;
 104   return !!handled;
 105 }
 106
 107 bool InputMethodWin::DispatchKeyEvent(const ui::KeyEvent& event) {
 108   if (!event.HasNativeEvent())
 109     return DispatchFabricatedKeyEvent(event);
 110
 111   const base::NativeEvent& native_key_event = event.native_event();
 112   if (native_key_event.message == WM_CHAR) {
 113     BOOL handled;
 114     OnChar(native_key_event.hwnd, native_key_event.message,
 115            native_key_event.wParam, native_key_event.lParam, &handled);
 116     return !!handled;  // Don't send WM_CHAR for post event processing.
 117   }
 118   // Handles ctrl-shift key to change text direction and layout alignment.
 119   if (ui::IMM32Manager::IsRTLKeyboardLayoutInstalled() &&
 120       !IsTextInputTypeNone()) {
 121     // TODO: shouldn't need to generate a KeyEvent here.
 122     const ui::KeyEvent key(native_key_event);
 123     ui::KeyboardCode code = key.key_code();
 124     if (key.type() == ui::ET_KEY_PRESSED) {
 125       if (code == ui::VKEY_SHIFT) {
 126         base::i18n::TextDirection dir;
 127         if (ui::IMM32Manager::IsCtrlShiftPressed(&dir))
 128           pending_requested_direction_ = dir;
 129       } else if (code != ui::VKEY_CONTROL) {
 130         pending_requested_direction_ = base::i18n::UNKNOWN_DIRECTION;
 131       }
 132     } else if (key.type() == ui::ET_KEY_RELEASED &&
 133                (code == ui::VKEY_SHIFT || code == ui::VKEY_CONTROL) &&
 134                pending_requested_direction_ != base::i18n::UNKNOWN_DIRECTION) {
 135       GetTextInputClient()->ChangeTextDirectionAndLayoutAlignment(
 136           pending_requested_direction_);
 137       pending_requested_direction_ = base::i18n::UNKNOWN_DIRECTION;
 138     }
 139   }
 140
 141   return DispatchKeyEventPostIME(event);
 142 }
 143
 144 void InputMethodWin::OnTextInputTypeChanged(const TextInputClient* client) {
 145   if (!IsTextInputClientFocused(client) || !IsWindowFocused(client))
 146     return;
 147   imm32_manager_.CancelIME(GetAttachedWindowHandle(client));
 148   UpdateIMEState();
 149 }
 150
 151 void InputMethodWin::OnCaretBoundsChanged(const TextInputClient* client) {
 152   if (!enabled_ || !IsTextInputClientFocused(client) ||
 153       !IsWindowFocused(client)) {
 154     return;
 155   }
 156   // The current text input type should not be NONE if |client| is focused.
 157   DCHECK(!IsTextInputTypeNone());
 158   // Tentatively assume that the returned value is DIP (Density Independent
 159   // Pixel). See the comment in text_input_client.h and http://crbug.com/360334.
 160   const gfx::Rect dip_screen_bounds(GetTextInputClient()->GetCaretBounds());
 161   const gfx::Rect screen_bounds = gfx::win::DIPToScreenRect(dip_screen_bounds);
 162
 163   HWND attached_window = GetAttachedWindowHandle(client);
 164   // TODO(ime): see comment in TextInputClient::GetCaretBounds(), this
 165   // conversion shouldn't be necessary.
 166   RECT r = {};
 167   GetClientRect(attached_window, &r);
 168   POINT window_point = { screen_bounds.x(), screen_bounds.y() };
 169   ScreenToClient(attached_window, &window_point);
 170   gfx::Rect caret_rect(gfx::Point(window_point.x, window_point.y),
 171                        screen_bounds.size());
 172   imm32_manager_.UpdateCaretRect(attached_window, caret_rect);
 173 }
 174
 175 void InputMethodWin::CancelComposition(const TextInputClient* client) {
 176   if (enabled_ && IsTextInputClientFocused(client))
 177     imm32_manager_.CancelIME(GetAttachedWindowHandle(client));
 178 }
 179
 180 void InputMethodWin::OnInputLocaleChanged() {
 181   active_ = imm32_manager_.SetInputLanguage();
 182   locale_ = imm32_manager_.GetInputLanguageName();
 183   OnInputMethodChanged();
 184 }
 185
 186 std::string InputMethodWin::GetInputLocale() {
 187   return locale_;
 188 }
 189
 190 bool InputMethodWin::IsActive() {
 191   return active_;
 192 }
 193
 194 bool InputMethodWin::IsCandidatePopupOpen() const {
 195   return is_candidate_popup_open_;
 196 }
 197
 198 void InputMethodWin::OnWillChangeFocusedClient(TextInputClient* focused_before,
 199                                                TextInputClient* focused) {
 200   if (IsWindowFocused(focused_before))
 201     ConfirmCompositionText();
 202 }
 203
 204 void InputMethodWin::OnDidChangeFocusedClient(
 205     TextInputClient* focused_before,
 206     TextInputClient* focused) {
 207   if (IsWindowFocused(focused)) {
 208     // Force to update the input type since client's TextInputStateChanged()
 209     // function might not be called if text input types before the client loses
 210     // focus and after it acquires focus again are the same.
 211     OnTextInputTypeChanged(focused);
 212
 213     UpdateIMEState();
 214
 215     // Force to update caret bounds, in case the client thinks that the caret
 216     // bounds has not changed.
 217     OnCaretBoundsChanged(focused);
 218   }
 219   if (focused_before != focused)
 220     accept_carriage_return_ = false;
 221 }
 222
 223 LRESULT InputMethodWin::OnChar(HWND window_handle,
 224                                UINT message,
 225                                WPARAM wparam,
 226                                LPARAM lparam,
 227                                BOOL* handled) {
 228   *handled = TRUE;
 229
 230   // We need to send character events to the focused text input client event if
 231   // its text input type is ui::TEXT_INPUT_TYPE_NONE.
 232   if (GetTextInputClient()) {
 233     const base::char16 kCarriageReturn = L'\r';
 234     const base::char16 ch = static_cast<base::char16>(wparam);
 235     // A mask to determine the previous key state from |lparam|. The value is 1
 236     // if the key is down before the message is sent, or it is 0 if the key is
 237     // up.
 238     const uint32 kPrevKeyDownBit = 0x40000000;
 239     if (ch == kCarriageReturn && !(lparam & kPrevKeyDownBit))
 240       accept_carriage_return_ = true;
 241     // Conditionally ignore '\r' events to work around crbug.com/319100.
 242     // TODO(yukawa, IME): Figure out long-term solution.
 243     if (ch != kCarriageReturn || accept_carriage_return_)
 244       GetTextInputClient()->InsertChar(ch, ui::GetModifiersFromKeyState());
 245   }
 246
 247   // Explicitly show the system menu at a good location on [Alt]+[Space].
 248   // Note: Setting |handled| to FALSE for DefWindowProc triggering of the system
 249   //       menu causes undesirable titlebar artifacts in the classic theme.
 250   if (message == WM_SYSCHAR && wparam == VK_SPACE)
 251     gfx::ShowSystemMenu(window_handle);
 252
 253   return 0;
 254 }
 255
 256 LRESULT InputMethodWin::OnImeSetContext(HWND window_handle,
 257                                         UINT message,
 258                                         WPARAM wparam,
 259                                         LPARAM lparam,
 260                                         BOOL* handled) {
 261   if (!!wparam)
 262     imm32_manager_.CreateImeWindow(window_handle);
 263
 264   OnInputMethodChanged();
 265   return imm32_manager_.SetImeWindowStyle(
 266       window_handle, message, wparam, lparam, handled);
 267 }
 268
 269 LRESULT InputMethodWin::OnImeStartComposition(HWND window_handle,
 270                                               UINT message,
 271                                               WPARAM wparam,
 272                                               LPARAM lparam,
 273                                               BOOL* handled) {
 274   // We have to prevent WTL from calling ::DefWindowProc() because the function
 275   // calls ::ImmSetCompositionWindow() and ::ImmSetCandidateWindow() to
 276   // over-write the position of IME windows.
 277   *handled = TRUE;
 278
 279   // Reset the composition status and create IME windows.
 280   composing_window_handle_ = window_handle;
 281   imm32_manager_.CreateImeWindow(window_handle);
 282   imm32_manager_.ResetComposition(window_handle);
 283   return 0;
 284 }
 285
 286 LRESULT InputMethodWin::OnImeComposition(HWND window_handle,
 287                                          UINT message,
 288                                          WPARAM wparam,
 289                                          LPARAM lparam,
 290                                          BOOL* handled) {
 291   // We have to prevent WTL from calling ::DefWindowProc() because we do not
 292   // want for the IMM (Input Method Manager) to send WM_IME_CHAR messages.
 293   *handled = TRUE;
 294
 295   // At first, update the position of the IME window.
 296   imm32_manager_.UpdateImeWindow(window_handle);
 297
 298   // Retrieve the result string and its attributes of the ongoing composition
 299   // and send it to a renderer process.
 300   ui::CompositionText composition;
 301   if (imm32_manager_.GetResult(window_handle, lparam, &composition.text)) {
 302     if (!IsTextInputTypeNone())
 303       GetTextInputClient()->InsertText(composition.text);
 304     imm32_manager_.ResetComposition(window_handle);
 305     // Fall though and try reading the composition string.
 306     // Japanese IMEs send a message containing both GCS_RESULTSTR and
 307     // GCS_COMPSTR, which means an ongoing composition has been finished
 308     // by the start of another composition.
 309   }
 310   // Retrieve the composition string and its attributes of the ongoing
 311   // composition and send it to a renderer process.
 312   if (imm32_manager_.GetComposition(window_handle, lparam, &composition) &&
 313       !IsTextInputTypeNone())
 314     GetTextInputClient()->SetCompositionText(composition);
 315
 316   return 0;
 317 }
 318
 319 LRESULT InputMethodWin::OnImeEndComposition(HWND window_handle,
 320                                             UINT message,
 321                                             WPARAM wparam,
 322                                             LPARAM lparam,
 323                                             BOOL* handled) {
 324   // Let WTL call ::DefWindowProc() and release its resources.
 325   *handled = FALSE;
 326
 327   composing_window_handle_ = NULL;
 328
 329   if (!IsTextInputTypeNone() && GetTextInputClient()->HasCompositionText())
 330     GetTextInputClient()->ClearCompositionText();
 331
 332   imm32_manager_.ResetComposition(window_handle);
 333   imm32_manager_.DestroyImeWindow(window_handle);
 334   return 0;
 335 }
 336
 337 LRESULT InputMethodWin::OnImeNotify(UINT message,
 338                                     WPARAM wparam,
 339                                     LPARAM lparam,
 340                                     BOOL* handled) {
 341   *handled = FALSE;
 342
 343   bool previous_state = is_candidate_popup_open_;
 344
 345   // Update |is_candidate_popup_open_|, whether a candidate window is open.
 346   switch (wparam) {
 347   case IMN_OPENCANDIDATE:
 348     is_candidate_popup_open_ = true;
 349     if (!previous_state)
 350       OnCandidateWindowShown();
 351     break;
 352   case IMN_CLOSECANDIDATE:
 353     is_candidate_popup_open_ = false;
 354     if (previous_state)
 355       OnCandidateWindowHidden();
 356     break;
 357   case IMN_CHANGECANDIDATE:
 358     // TODO(kochi): The IME API expects this event to notify window size change,
 359     // while this may fire more often without window resize. There is no generic
 360     // way to get bounds of candidate window.
 361     OnCandidateWindowUpdated();
 362     break;
 363   }
 364
 365   return 0;
 366 }
 367
 368 LRESULT InputMethodWin::OnImeRequest(UINT message,
 369                                      WPARAM wparam,
 370                                      LPARAM lparam,
 371                                      BOOL* handled) {
 372   *handled = FALSE;
 373
 374   // Should not receive WM_IME_REQUEST message, if IME is disabled.
 375   const ui::TextInputType type = GetTextInputType();
 376   if (type == ui::TEXT_INPUT_TYPE_NONE ||
 377       type == ui::TEXT_INPUT_TYPE_PASSWORD) {
 378     return 0;
 379   }
 380
 381   switch (wparam) {
 382     case IMR_RECONVERTSTRING:
 383       *handled = TRUE;
 384       return OnReconvertString(reinterpret_cast<RECONVERTSTRING*>(lparam));
 385     case IMR_DOCUMENTFEED:
 386       *handled = TRUE;
 387       return OnDocumentFeed(reinterpret_cast<RECONVERTSTRING*>(lparam));
 388     case IMR_QUERYCHARPOSITION:
 389       *handled = TRUE;
 390       return OnQueryCharPosition(reinterpret_cast<IMECHARPOSITION*>(lparam));
 391     default:
 392       return 0;
 393   }
 394 }
 395
 396 LRESULT InputMethodWin::OnDocumentFeed(RECONVERTSTRING* reconv) {
 397   ui::TextInputClient* client = GetTextInputClient();
 398   if (!client)
 399     return 0;
 400
 401   gfx::Range text_range;
 402   if (!client->GetTextRange(&text_range) || text_range.is_empty())
 403     return 0;
 404
 405   bool result = false;
 406   gfx::Range target_range;
 407   if (client->HasCompositionText())
 408     result = client->GetCompositionTextRange(&target_range);
 409
 410   if (!result || target_range.is_empty()) {
 411     if (!client->GetSelectionRange(&target_range) ||
 412         !target_range.IsValid()) {
 413       return 0;
 414     }
 415   }
 416
 417   if (!text_range.Contains(target_range))
 418     return 0;
 419
 420   if (target_range.GetMin() - text_range.start() > kExtraNumberOfChars)
 421     text_range.set_start(target_range.GetMin() - kExtraNumberOfChars);
 422
 423   if (text_range.end() - target_range.GetMax() > kExtraNumberOfChars)
 424     text_range.set_end(target_range.GetMax() + kExtraNumberOfChars);
 425
 426   size_t len = text_range.length();
 427   size_t need_size = sizeof(RECONVERTSTRING) + len * sizeof(WCHAR);
 428
 429   if (!reconv)
 430     return need_size;
 431
 432   if (reconv->dwSize < need_size)
 433     return 0;
 434
 435   base::string16 text;
 436   if (!GetTextInputClient()->GetTextFromRange(text_range, &text))
 437     return 0;
 438   DCHECK_EQ(text_range.length(), text.length());
 439
 440   reconv->dwVersion = 0;
 441   reconv->dwStrLen = len;
 442   reconv->dwStrOffset = sizeof(RECONVERTSTRING);
 443   reconv->dwCompStrLen =
 444       client->HasCompositionText() ? target_range.length() : 0;
 445   reconv->dwCompStrOffset =
 446       (target_range.GetMin() - text_range.start()) * sizeof(WCHAR);
 447   reconv->dwTargetStrLen = target_range.length();
 448   reconv->dwTargetStrOffset = reconv->dwCompStrOffset;
 449
 450   memcpy((char*)reconv + sizeof(RECONVERTSTRING),
 451          text.c_str(), len * sizeof(WCHAR));
 452
 453   // According to Microsoft API document, IMR_RECONVERTSTRING and
 454   // IMR_DOCUMENTFEED should return reconv, but some applications return
 455   // need_size.
 456   return reinterpret_cast<LRESULT>(reconv);
 457 }
 458
 459 LRESULT InputMethodWin::OnReconvertString(RECONVERTSTRING* reconv) {
 460   ui::TextInputClient* client = GetTextInputClient();
 461   if (!client)
 462     return 0;
 463
 464   // If there is a composition string already, we don't allow reconversion.
 465   if (client->HasCompositionText())
 466     return 0;
 467
 468   gfx::Range text_range;
 469   if (!client->GetTextRange(&text_range) || text_range.is_empty())
 470     return 0;
 471
 472   gfx::Range selection_range;
 473   if (!client->GetSelectionRange(&selection_range) ||
 474       selection_range.is_empty()) {
 475     return 0;
 476   }
 477
 478   DCHECK(text_range.Contains(selection_range));
 479
 480   size_t len = selection_range.length();
 481   size_t need_size = sizeof(RECONVERTSTRING) + len * sizeof(WCHAR);
 482
 483   if (!reconv)
 484     return need_size;
 485
 486   if (reconv->dwSize < need_size)
 487     return 0;
 488
 489   // TODO(penghuang): Return some extra context to help improve IME's
 490   // reconversion accuracy.
 491   base::string16 text;
 492   if (!GetTextInputClient()->GetTextFromRange(selection_range, &text))
 493     return 0;
 494   DCHECK_EQ(selection_range.length(), text.length());
 495
 496   reconv->dwVersion = 0;
 497   reconv->dwStrLen = len;
 498   reconv->dwStrOffset = sizeof(RECONVERTSTRING);
 499   reconv->dwCompStrLen = len;
 500   reconv->dwCompStrOffset = 0;
 501   reconv->dwTargetStrLen = len;
 502   reconv->dwTargetStrOffset = 0;
 503
 504   memcpy(reinterpret_cast<char*>(reconv) + sizeof(RECONVERTSTRING),
 505          text.c_str(), len * sizeof(WCHAR));
 506
 507   // According to Microsoft API document, IMR_RECONVERTSTRING and
 508   // IMR_DOCUMENTFEED should return reconv, but some applications return
 509   // need_size.
 510   return reinterpret_cast<LRESULT>(reconv);
 511 }
 512
 513 LRESULT InputMethodWin::OnQueryCharPosition(IMECHARPOSITION* char_positon) {
 514   if (!char_positon)
 515     return 0;
 516
 517   if (char_positon->dwSize < sizeof(IMECHARPOSITION))
 518     return 0;
 519
 520   ui::TextInputClient* client = GetTextInputClient();
 521   if (!client)
 522     return 0;
 523
 524   // Tentatively assume that the returned value from |client| is DIP (Density
 525   // Independent Pixel). See the comment in text_input_client.h and
 526   // http://crbug.com/360334.
 527   gfx::Rect dip_rect;
 528   if (client->HasCompositionText()) {
 529     if (!client->GetCompositionCharacterBounds(char_positon->dwCharPos,
 530                                                &dip_rect)) {
 531       return 0;
 532     }
 533   } else {
 534     // If there is no composition and the first character is queried, returns
 535     // the caret bounds. This behavior is the same to that of RichEdit control.
 536     if (char_positon->dwCharPos != 0)
 537       return 0;
 538     dip_rect = client->GetCaretBounds();
 539   }
 540   const gfx::Rect rect = gfx::win::DIPToScreenRect(dip_rect);
 541
 542   char_positon->pt.x = rect.x();
 543   char_positon->pt.y = rect.y();
 544   char_positon->cLineHeight = rect.height();
 545   return 1;  // returns non-zero value when succeeded.
 546 }
 547
 548 HWND InputMethodWin::GetAttachedWindowHandle(
 549   const TextInputClient* text_input_client) const {
 550   // On Aura environment, we can assume that |toplevel_window_handle_| always
 551   // represents the valid top-level window handle because each top-level window
 552   // is responsible for lifecycle management of corresponding InputMethod
 553   // instance.
 554   return toplevel_window_handle_;
 555 }
 556
 557 bool InputMethodWin::IsWindowFocused(const TextInputClient* client) const {
 558   if (!client)
 559     return false;
 560   HWND attached_window_handle = GetAttachedWindowHandle(client);
 561   // When Aura is enabled, |attached_window_handle| should always be a top-level
 562   // window. So we can safely assume that |attached_window_handle| is ready for
 563   // receiving keyboard input as long as it is an active window. This works well
 564   // even when the |attached_window_handle| becomes active but has not received
 565   // WM_FOCUS yet.
 566   return attached_window_handle && GetActiveWindow() == attached_window_handle;
 567 }
 568
 569 bool InputMethodWin::DispatchFabricatedKeyEvent(const ui::KeyEvent& event) {
 570   if (event.is_char()) {
 571     if (GetTextInputClient()) {
 572       GetTextInputClient()->InsertChar(event.key_code(),
 573                                        ui::GetModifiersFromKeyState());
 574       return true;
 575     }
 576   }
 577   return DispatchKeyEventPostIME(event);
 578 }
 579
 580 void InputMethodWin::ConfirmCompositionText() {
 581   if (composing_window_handle_)
 582     imm32_manager_.CleanupComposition(composing_window_handle_);
 583
 584   if (!IsTextInputTypeNone()) {
 585     // Though above line should confirm the client's composition text by sending
 586     // a result text to us, in case the input method and the client are in
 587     // inconsistent states, we check the client's composition state again.
 588     if (GetTextInputClient()->HasCompositionText())
 589       GetTextInputClient()->ConfirmCompositionText();
 590   }
 591 }
 592
 593 void InputMethodWin::UpdateIMEState() {
 594   // Use switch here in case we are going to add more text input types.
 595   // We disable input method in password field.
 596   const HWND window_handle = GetAttachedWindowHandle(GetTextInputClient());
 597   const TextInputType text_input_type = GetTextInputType();
 598   const TextInputMode text_input_mode = GetTextInputMode();
 599   switch (text_input_type) {
 600     case ui::TEXT_INPUT_TYPE_NONE:
 601     case ui::TEXT_INPUT_TYPE_PASSWORD:
 602       imm32_manager_.DisableIME(window_handle);
 603       enabled_ = false;
 604       break;
 605     default:
 606       imm32_manager_.EnableIME(window_handle);
 607       enabled_ = true;
 608       break;
 609   }
 610
 611   imm32_manager_.SetTextInputMode(window_handle, text_input_mode);
 612   tsf_inputscope::SetInputScopeForTsfUnawareWindow(
 613       window_handle, text_input_type, text_input_mode);
 614 }
 615
 616 }  // namespace ui