chrome/browser/ui/views/omnibox/omnibox_view_views.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 "chrome/browser/ui/views/omnibox/omnibox_view_views.h"
   6
   7 #include <set>
   8
   9 #include "base/command_line.h"
  10 #include "base/logging.h"
  11 #include "base/metrics/histogram.h"
  12 #include "base/strings/string_util.h"
  13 #include "base/strings/utf_string_conversions.h"
  14 #include "chrome/app/chrome_command_ids.h"
  15 #include "chrome/browser/autocomplete/chrome_autocomplete_scheme_classifier.h"
  16 #include "chrome/browser/command_updater.h"
  17 #include "chrome/browser/search/search.h"
  18 #include "chrome/browser/ui/omnibox/chrome_omnibox_client.h"
  19 #include "chrome/browser/ui/omnibox/clipboard_utils.h"
  20 #include "chrome/browser/ui/view_ids.h"
  21 #include "chrome/browser/ui/views/location_bar/location_bar_view.h"
  22 #include "chrome/browser/ui/views/omnibox/omnibox_popup_contents_view.h"
  23 #include "chrome/browser/ui/views/settings_api_bubble_helper_views.h"
  24 #include "chrome/grit/generated_resources.h"
  25 #include "components/bookmarks/browser/bookmark_node_data.h"
  26 #include "components/omnibox/browser/autocomplete_input.h"
  27 #include "components/omnibox/browser/autocomplete_match.h"
  28 #include "components/omnibox/browser/omnibox_edit_controller.h"
  29 #include "components/omnibox/browser/omnibox_edit_model.h"
  30 #include "components/omnibox/browser/omnibox_field_trial.h"
  31 #include "components/omnibox/browser/omnibox_popup_model.h"
  32 #include "components/search/search.h"
  33 #include "content/public/browser/web_contents.h"
  34 #include "extensions/common/constants.h"
  35 #include "net/base/escape.h"
  36 #include "third_party/skia/include/core/SkColor.h"
  37 #include "ui/accessibility/ax_view_state.h"
  38 #include "ui/base/clipboard/scoped_clipboard_writer.h"
  39 #include "ui/base/dragdrop/drag_drop_types.h"
  40 #include "ui/base/dragdrop/os_exchange_data.h"
  41 #include "ui/base/ime/input_method.h"
  42 #include "ui/base/ime/text_input_client.h"
  43 #include "ui/base/ime/text_input_type.h"
  44 #include "ui/base/l10n/l10n_util.h"
  45 #include "ui/base/models/simple_menu_model.h"
  46 #include "ui/compositor/layer.h"
  47 #include "ui/events/event.h"
  48 #include "ui/gfx/canvas.h"
  49 #include "ui/gfx/font_list.h"
  50 #include "ui/gfx/selection_model.h"
  51 #include "ui/strings/grit/ui_strings.h"
  52 #include "ui/views/border.h"
  53 #include "ui/views/button_drag_utils.h"
  54 #include "ui/views/controls/textfield/textfield.h"
  55 #include "ui/views/layout/fill_layout.h"
  56 #include "ui/views/widget/widget.h"
  57 #include "url/gurl.h"
  58
  59 #if defined(OS_WIN)
  60 #include "chrome/browser/browser_process.h"
  61 #endif
  62
  63 using bookmarks::BookmarkNodeData;
  64
  65 namespace {
  66
  67 // OmniboxState ---------------------------------------------------------------
  68
  69 // Stores omnibox state for each tab.
  70 struct OmniboxState : public base::SupportsUserData::Data {
  71   static const char kKey[];
  72
  73   OmniboxState(const OmniboxEditModel::State& model_state,
  74                const gfx::Range& selection,
  75                const gfx::Range& saved_selection_for_focus_change);
  76   ~OmniboxState() override;
  77
  78   const OmniboxEditModel::State model_state;
  79
  80   // We store both the actual selection and any saved selection (for when the
  81   // omnibox is not focused).  This allows us to properly handle cases like
  82   // selecting text, tabbing out of the omnibox, switching tabs away and back,
  83   // and tabbing back into the omnibox.
  84   const gfx::Range selection;
  85   const gfx::Range saved_selection_for_focus_change;
  86 };
  87
  88 // static
  89 const char OmniboxState::kKey[] = "OmniboxState";
  90
  91 OmniboxState::OmniboxState(const OmniboxEditModel::State& model_state,
  92                            const gfx::Range& selection,
  93                            const gfx::Range& saved_selection_for_focus_change)
  94     : model_state(model_state),
  95       selection(selection),
  96       saved_selection_for_focus_change(saved_selection_for_focus_change) {
  97 }
  98
  99 OmniboxState::~OmniboxState() {
 100 }
 101
 102
 103 // Helpers --------------------------------------------------------------------
 104
 105 // We'd like to set the text input type to TEXT_INPUT_TYPE_URL, because this
 106 // triggers URL-specific layout in software keyboards, e.g. adding top-level "/"
 107 // and ".com" keys for English.  However, this also causes IMEs to default to
 108 // Latin character mode, which makes entering search queries difficult for IME
 109 // users.  Therefore, we try to guess whether an IME will be used based on the
 110 // application language, and set the input type accordingly.
 111 ui::TextInputType DetermineTextInputType() {
 112 #if defined(OS_WIN)
 113   DCHECK(g_browser_process);
 114   const std::string& locale = g_browser_process->GetApplicationLocale();
 115   const std::string& language = locale.substr(0, 2);
 116   // Assume CJK + Thai users are using an IME.
 117   if (language == "ja" ||
 118       language == "ko" ||
 119       language == "th" ||
 120       language == "zh")
 121     return ui::TEXT_INPUT_TYPE_SEARCH;
 122 #endif
 123   return ui::TEXT_INPUT_TYPE_URL;
 124 }
 125
 126 }  // namespace
 127
 128
 129 // OmniboxViewViews -----------------------------------------------------------
 130
 131 // static
 132 const char OmniboxViewViews::kViewClassName[] = "OmniboxViewViews";
 133
 134 OmniboxViewViews::OmniboxViewViews(OmniboxEditController* controller,
 135                                    Profile* profile,
 136                                    CommandUpdater* command_updater,
 137                                    bool popup_window_mode,
 138                                    LocationBarView* location_bar,
 139                                    const gfx::FontList& font_list)
 140     : OmniboxView(
 141           controller,
 142           make_scoped_ptr(new ChromeOmniboxClient(controller, profile))),
 143       profile_(profile),
 144       popup_window_mode_(popup_window_mode),
 145       security_level_(SecurityStateModel::NONE),
 146       saved_selection_for_focus_change_(gfx::Range::InvalidRange()),
 147       ime_composing_before_change_(false),
 148       delete_at_end_pressed_(false),
 149       location_bar_view_(location_bar),
 150       ime_candidate_window_open_(false),
 151       select_all_on_mouse_release_(false),
 152       select_all_on_gesture_tap_(false),
 153       weak_ptr_factory_(this) {
 154   SetBorder(views::Border::NullBorder());
 155   set_id(VIEW_ID_OMNIBOX);
 156   SetFontList(font_list);
 157 }
 158
 159 OmniboxViewViews::~OmniboxViewViews() {
 160 #if defined(OS_CHROMEOS)
 161   chromeos::input_method::InputMethodManager::Get()->
 162       RemoveCandidateWindowObserver(this);
 163 #endif
 164
 165   // Explicitly teardown members which have a reference to us.  Just to be safe
 166   // we want them to be destroyed before destroying any other internal state.
 167   popup_view_.reset();
 168 }
 169
 170 void OmniboxViewViews::Init() {
 171   set_controller(this);
 172   SetTextInputType(DetermineTextInputType());
 173
 174   if (popup_window_mode_)
 175     SetReadOnly(true);
 176
 177   if (location_bar_view_) {
 178     // Initialize the popup view using the same font.
 179     popup_view_.reset(OmniboxPopupContentsView::Create(
 180         GetFontList(), this, model(), location_bar_view_));
 181   }
 182
 183 #if defined(OS_CHROMEOS)
 184   chromeos::input_method::InputMethodManager::Get()->
 185       AddCandidateWindowObserver(this);
 186 #endif
 187 }
 188
 189 void OmniboxViewViews::SaveStateToTab(content::WebContents* tab) {
 190   DCHECK(tab);
 191
 192   // We don't want to keep the IME status, so force quit the current
 193   // session here.  It may affect the selection status, so order is
 194   // also important.
 195   if (IsIMEComposing()) {
 196     ConfirmCompositionText();
 197     GetInputMethod()->CancelComposition(this);
 198   }
 199
 200   // NOTE: GetStateForTabSwitch() may affect GetSelectedRange(), so order is
 201   // important.
 202   OmniboxEditModel::State state = model()->GetStateForTabSwitch();
 203   tab->SetUserData(OmniboxState::kKey, new OmniboxState(
 204       state, GetSelectedRange(), saved_selection_for_focus_change_));
 205 }
 206
 207 void OmniboxViewViews::OnTabChanged(const content::WebContents* web_contents) {
 208   UpdateSecurityLevel();
 209   const OmniboxState* state = static_cast<OmniboxState*>(
 210       web_contents->GetUserData(&OmniboxState::kKey));
 211   model()->RestoreState(state ? &state->model_state : NULL);
 212   if (state) {
 213     // This assumes that the omnibox has already been focused or blurred as
 214     // appropriate; otherwise, a subsequent OnFocus() or OnBlur() call could
 215     // goof up the selection.  See comments at the end of
 216     // BrowserView::ActiveTabChanged().
 217     SelectRange(state->selection);
 218     saved_selection_for_focus_change_ = state->saved_selection_for_focus_change;
 219   }
 220
 221   // TODO(msw|oshima): Consider saving/restoring edit history.
 222   ClearEditHistory();
 223 }
 224
 225 void OmniboxViewViews::ResetTabState(content::WebContents* web_contents) {
 226   web_contents->SetUserData(OmniboxState::kKey, nullptr);
 227 }
 228
 229 void OmniboxViewViews::Update() {
 230   const SecurityStateModel::SecurityLevel old_security_level = security_level_;
 231   UpdateSecurityLevel();
 232   if (model()->UpdatePermanentText()) {
 233     // Something visibly changed.  Re-enable URL replacement.
 234     controller()->GetToolbarModel()->set_url_replacement_enabled(true);
 235     model()->UpdatePermanentText();
 236
 237     // Select all the new text if the user had all the old text selected, or if
 238     // there was no previous text (for new tab page URL replacement extensions).
 239     // This makes one particular case better: the user clicks in the box to
 240     // change it right before the permanent URL is changed.  Since the new URL
 241     // is still fully selected, the user's typing will replace the edit contents
 242     // as they'd intended.
 243     const bool was_select_all = IsSelectAll();
 244     const bool was_reversed = GetSelectedRange().is_reversed();
 245
 246     RevertAll();
 247
 248     // Only select all when we have focus.  If we don't have focus, selecting
 249     // all is unnecessary since the selection will change on regaining focus,
 250     // and can in fact cause artifacts, e.g. if the user is on the NTP and
 251     // clicks a link to navigate, causing |was_select_all| to be vacuously true
 252     // for the empty omnibox, and we then select all here, leading to the
 253     // trailing portion of a long URL being scrolled into view.  We could try
 254     // and address cases like this, but it seems better to just not muck with
 255     // things when the omnibox isn't focused to begin with.
 256     if (was_select_all && model()->has_focus())
 257       SelectAll(was_reversed);
 258   } else if (old_security_level != security_level_) {
 259     EmphasizeURLComponents();
 260   }
 261 }
 262
 263 base::string16 OmniboxViewViews::GetText() const {
 264   // TODO(oshima): IME support
 265   return text();
 266 }
 267
 268 void OmniboxViewViews::SetUserText(const base::string16& text,
 269                                    const base::string16& display_text,
 270                                    bool update_popup) {
 271   saved_selection_for_focus_change_ = gfx::Range::InvalidRange();
 272   OmniboxView::SetUserText(text, display_text, update_popup);
 273 }
 274
 275 void OmniboxViewViews::SetForcedQuery() {
 276   const base::string16 current_text(text());
 277   const size_t start = current_text.find_first_not_of(base::kWhitespaceUTF16);
 278   if (start == base::string16::npos || (current_text[start] != '?'))
 279     OmniboxView::SetUserText(base::ASCIIToUTF16("?"));
 280   else
 281     SelectRange(gfx::Range(current_text.size(), start + 1));
 282 }
 283
 284 void OmniboxViewViews::GetSelectionBounds(
 285     base::string16::size_type* start,
 286     base::string16::size_type* end) const {
 287   const gfx::Range range = GetSelectedRange();
 288   *start = static_cast<size_t>(range.start());
 289   *end = static_cast<size_t>(range.end());
 290 }
 291
 292 void OmniboxViewViews::SelectAll(bool reversed) {
 293   views::Textfield::SelectAll(reversed);
 294 }
 295
 296 void OmniboxViewViews::RevertAll() {
 297   saved_selection_for_focus_change_ = gfx::Range::InvalidRange();
 298   OmniboxView::RevertAll();
 299 }
 300
 301 void OmniboxViewViews::SetFocus() {
 302   RequestFocus();
 303   // Restore caret visibility if focus is explicitly requested. This is
 304   // necessary because if we already have invisible focus, the RequestFocus()
 305   // call above will short-circuit, preventing us from reaching
 306   // OmniboxEditModel::OnSetFocus(), which handles restoring visibility when the
 307   // omnibox regains focus after losing focus.
 308   model()->SetCaretVisibility(true);
 309 }
 310
 311 int OmniboxViewViews::GetTextWidth() const {
 312   // Returns the width necessary to display the current text, including any
 313   // necessary space for the cursor or border/margin.
 314   return GetRenderText()->GetContentWidth() + GetInsets().width();
 315 }
 316
 317 bool OmniboxViewViews::IsImeComposing() const {
 318   return IsIMEComposing();
 319 }
 320
 321 gfx::Size OmniboxViewViews::GetMinimumSize() const {
 322   const int kMinCharacters = 10;
 323   return gfx::Size(
 324       GetFontList().GetExpectedTextWidth(kMinCharacters) + GetInsets().width(),
 325       GetPreferredSize().height());
 326 }
 327
 328 void OmniboxViewViews::OnNativeThemeChanged(const ui::NativeTheme* theme) {
 329   views::Textfield::OnNativeThemeChanged(theme);
 330   if (location_bar_view_) {
 331     SetBackgroundColor(location_bar_view_->GetColor(
 332         SecurityStateModel::NONE, LocationBarView::BACKGROUND));
 333   }
 334   EmphasizeURLComponents();
 335 }
 336
 337 void OmniboxViewViews::OnPaint(gfx::Canvas* canvas) {
 338   Textfield::OnPaint(canvas);
 339   if (!insert_char_time_.is_null()) {
 340     UMA_HISTOGRAM_TIMES("Omnibox.CharTypedToRepaintLatency",
 341                         base::TimeTicks::Now() - insert_char_time_);
 342     insert_char_time_ = base::TimeTicks();
 343   }
 344 }
 345
 346 void OmniboxViewViews::ExecuteCommand(int command_id, int event_flags) {
 347   // In the base class, touch text selection is deactivated when a command is
 348   // executed. Since we are not always calling the base class implementation
 349   // here, we need to deactivate touch text selection here, too.
 350   DestroyTouchSelection();
 351   switch (command_id) {
 352     // These commands don't invoke the popup via OnBefore/AfterPossibleChange().
 353     case IDS_PASTE_AND_GO:
 354       model()->PasteAndGo(GetClipboardText());
 355       return;
 356     case IDS_SHOW_URL:
 357       controller()->ShowURL();
 358       return;
 359     case IDC_EDIT_SEARCH_ENGINES:
 360       location_bar_view_->command_updater()->ExecuteCommand(command_id);
 361       return;
 362     case IDS_MOVE_DOWN:
 363     case IDS_MOVE_UP:
 364       model()->OnUpOrDownKeyPressed(command_id == IDS_MOVE_DOWN ? 1 : -1);
 365       return;
 366
 367     // These commands do invoke the popup.
 368     case IDS_APP_PASTE:
 369       OnPaste();
 370       return;
 371     default:
 372       if (Textfield::IsCommandIdEnabled(command_id)) {
 373         // The Textfield code will invoke OnBefore/AfterPossibleChange() itself
 374         // as necessary.
 375         Textfield::ExecuteCommand(command_id, event_flags);
 376         return;
 377       }
 378       OnBeforePossibleChange();
 379       location_bar_view_->command_updater()->ExecuteCommand(command_id);
 380       OnAfterPossibleChange();
 381       return;
 382   }
 383 }
 384
 385 void OmniboxViewViews::SetTextAndSelectedRange(const base::string16& text,
 386                                                const gfx::Range& range) {
 387   SetText(text);
 388   SelectRange(range);
 389 }
 390
 391 base::string16 OmniboxViewViews::GetSelectedText() const {
 392   // TODO(oshima): Support IME.
 393   return views::Textfield::GetSelectedText();
 394 }
 395
 396 void OmniboxViewViews::OnPaste() {
 397   const base::string16 text(GetClipboardText());
 398   if (!text.empty()) {
 399     OnBeforePossibleChange();
 400     // Record this paste, so we can do different behavior.
 401     model()->OnPaste();
 402     // Force a Paste operation to trigger the text_changed code in
 403     // OnAfterPossibleChange(), even if identical contents are pasted.
 404     text_before_change_.clear();
 405     InsertOrReplaceText(text);
 406     OnAfterPossibleChange();
 407   }
 408 }
 409
 410 bool OmniboxViewViews::HandleEarlyTabActions(const ui::KeyEvent& event) {
 411   // This must run before accelerator handling invokes a focus change on tab.
 412   // Note the parallel with SkipDefaultKeyEventProcessing above.
 413   if (!views::FocusManager::IsTabTraversalKeyEvent(event))
 414     return false;
 415
 416   if (model()->is_keyword_hint() && !event.IsShiftDown())
 417     return model()->AcceptKeyword(ENTERED_KEYWORD_MODE_VIA_TAB);
 418
 419   if (!model()->popup_model()->IsOpen())
 420     return false;
 421
 422   if (event.IsShiftDown() &&
 423       (model()->popup_model()->selected_line_state() ==
 424           OmniboxPopupModel::KEYWORD))
 425     model()->ClearKeyword();
 426   else
 427     model()->OnUpOrDownKeyPressed(event.IsShiftDown() ? -1 : 1);
 428
 429   return true;
 430 }
 431
 432 void OmniboxViewViews::AccessibilitySetValue(const base::string16& new_value) {
 433   SetUserText(new_value, new_value, true);
 434 }
 435
 436 void OmniboxViewViews::UpdateSecurityLevel() {
 437   ChromeToolbarModel* chrome_toolbar_model =
 438       static_cast<ChromeToolbarModel*>(controller()->GetToolbarModel());
 439   security_level_ = chrome_toolbar_model->GetSecurityLevel(false);
 440 }
 441
 442 void OmniboxViewViews::SetWindowTextAndCaretPos(const base::string16& text,
 443                                                 size_t caret_pos,
 444                                                 bool update_popup,
 445                                                 bool notify_text_changed) {
 446   const gfx::Range range(caret_pos, caret_pos);
 447   SetTextAndSelectedRange(text, range);
 448
 449   if (update_popup)
 450     UpdatePopup();
 451
 452   if (notify_text_changed)
 453     TextChanged();
 454 }
 455
 456 bool OmniboxViewViews::IsSelectAll() const {
 457   // TODO(oshima): IME support.
 458   return text() == GetSelectedText();
 459 }
 460
 461 bool OmniboxViewViews::DeleteAtEndPressed() {
 462   return delete_at_end_pressed_;
 463 }
 464
 465 void OmniboxViewViews::UpdatePopup() {
 466   model()->SetInputInProgress(true);
 467   if (!model()->has_focus())
 468     return;
 469
 470   // Prevent inline autocomplete when the caret isn't at the end of the text.
 471   const gfx::Range sel = GetSelectedRange();
 472   model()->StartAutocomplete(!sel.is_empty(), sel.GetMax() < text().length(),
 473                              false);
 474 }
 475
 476 void OmniboxViewViews::ApplyCaretVisibility() {
 477   SetCursorEnabled(model()->is_caret_visible());
 478 }
 479
 480 void OmniboxViewViews::OnTemporaryTextMaybeChanged(
 481     const base::string16& display_text,
 482     bool save_original_selection,
 483     bool notify_text_changed) {
 484   if (save_original_selection)
 485     saved_temporary_selection_ = GetSelectedRange();
 486
 487   SetWindowTextAndCaretPos(display_text, display_text.length(), false,
 488                            notify_text_changed);
 489 }
 490
 491 bool OmniboxViewViews::OnInlineAutocompleteTextMaybeChanged(
 492     const base::string16& display_text,
 493     size_t user_text_length) {
 494   if (display_text == text())
 495     return false;
 496
 497   if (!IsIMEComposing()) {
 498     gfx::Range range(display_text.size(), user_text_length);
 499     SetTextAndSelectedRange(display_text, range);
 500   } else if (location_bar_view_) {
 501     location_bar_view_->SetImeInlineAutocompletion(
 502         display_text.substr(user_text_length));
 503   }
 504   TextChanged();
 505   return true;
 506 }
 507
 508 void OmniboxViewViews::OnInlineAutocompleteTextCleared() {
 509   // Hide the inline autocompletion for IME users.
 510   if (location_bar_view_)
 511     location_bar_view_->SetImeInlineAutocompletion(base::string16());
 512 }
 513
 514 void OmniboxViewViews::OnRevertTemporaryText() {
 515   SelectRange(saved_temporary_selection_);
 516   // We got here because the user hit the Escape key. We explicitly don't call
 517   // TextChanged(), since OmniboxPopupModel::ResetToDefaultMatch() has already
 518   // been called by now, and it would've called TextChanged() if it was
 519   // warranted.
 520 }
 521
 522 void OmniboxViewViews::OnBeforePossibleChange() {
 523   // Record our state.
 524   text_before_change_ = text();
 525   sel_before_change_ = GetSelectedRange();
 526   ime_composing_before_change_ = IsIMEComposing();
 527 }
 528
 529 bool OmniboxViewViews::OnAfterPossibleChange() {
 530   // See if the text or selection have changed since OnBeforePossibleChange().
 531   const base::string16 new_text = text();
 532   const gfx::Range new_sel = GetSelectedRange();
 533   const bool text_changed = (new_text != text_before_change_) ||
 534       (ime_composing_before_change_ != IsIMEComposing());
 535   const bool selection_differs =
 536       !((sel_before_change_.is_empty() && new_sel.is_empty()) ||
 537         sel_before_change_.EqualsIgnoringDirection(new_sel));
 538
 539   // When the user has deleted text, we don't allow inline autocomplete.  Make
 540   // sure to not flag cases like selecting part of the text and then pasting
 541   // (or typing) the prefix of that selection.  (We detect these by making
 542   // sure the caret, which should be after any insertion, hasn't moved
 543   // forward of the old selection start.)
 544   const bool just_deleted_text =
 545       (text_before_change_.length() > new_text.length()) &&
 546       (new_sel.start() <= sel_before_change_.GetMin());
 547
 548   const bool something_changed = model()->OnAfterPossibleChange(
 549       text_before_change_, new_text, new_sel.start(), new_sel.end(),
 550       selection_differs, text_changed, just_deleted_text, !IsIMEComposing());
 551
 552   // If only selection was changed, we don't need to call model()'s
 553   // OnChanged() method, which is called in TextChanged().
 554   // But we still need to call EmphasizeURLComponents() to make sure the text
 555   // attributes are updated correctly.
 556   if (something_changed && text_changed)
 557     TextChanged();
 558   else if (selection_differs)
 559     EmphasizeURLComponents();
 560   else if (delete_at_end_pressed_)
 561     model()->OnChanged();
 562
 563   return something_changed;
 564 }
 565
 566 gfx::NativeView OmniboxViewViews::GetNativeView() const {
 567   return GetWidget()->GetNativeView();
 568 }
 569
 570 gfx::NativeView OmniboxViewViews::GetRelativeWindowForPopup() const {
 571   return GetWidget()->GetTopLevelWidget()->GetNativeView();
 572 }
 573
 574 void OmniboxViewViews::SetGrayTextAutocompletion(const base::string16& input) {
 575   if (location_bar_view_)
 576     location_bar_view_->SetGrayTextAutocompletion(input);
 577 }
 578
 579 base::string16 OmniboxViewViews::GetGrayTextAutocompletion() const {
 580   return location_bar_view_ ?
 581       location_bar_view_->GetGrayTextAutocompletion() : base::string16();
 582 }
 583
 584 int OmniboxViewViews::GetWidth() const {
 585   return location_bar_view_ ? location_bar_view_->width() : 0;
 586 }
 587
 588 bool OmniboxViewViews::IsImeShowingPopup() const {
 589 #if defined(OS_CHROMEOS)
 590   return ime_candidate_window_open_;
 591 #else
 592   return GetInputMethod() ? GetInputMethod()->IsCandidatePopupOpen() : false;
 593 #endif
 594 }
 595
 596 void OmniboxViewViews::ShowImeIfNeeded() {
 597   GetInputMethod()->ShowImeIfNeeded();
 598 }
 599
 600 void OmniboxViewViews::OnMatchOpened(const AutocompleteMatch& match) {
 601   extensions::MaybeShowExtensionControlledSearchNotification(
 602       profile_, location_bar_view_->GetWebContents(), match);
 603 }
 604
 605 int OmniboxViewViews::GetOmniboxTextLength() const {
 606   // TODO(oshima): Support IME.
 607   return static_cast<int>(text().length());
 608 }
 609
 610 void OmniboxViewViews::EmphasizeURLComponents() {
 611   if (!location_bar_view_)
 612     return;
 613
 614   // If the current contents is a URL, force left-to-right rendering at the
 615   // paragraph level. Right-to-left runs are still rendered RTL, but will not
 616   // flip the whole URL around. For example (if "ABC" is Hebrew), this will
 617   // render "ABC.com" as "CBA.com", rather than "com.CBA".
 618   bool text_is_url = model()->CurrentTextIsURL();
 619   GetRenderText()->SetDirectionalityMode(text_is_url
 620                                              ? gfx::DIRECTIONALITY_FORCE_LTR
 621                                              : gfx::DIRECTIONALITY_FROM_TEXT);
 622
 623   // See whether the contents are a URL with a non-empty host portion, which we
 624   // should emphasize.  To check for a URL, rather than using the type returned
 625   // by Parse(), ask the model, which will check the desired page transition for
 626   // this input.  This can tell us whether an UNKNOWN input string is going to
 627   // be treated as a search or a navigation, and is the same method the Paste
 628   // And Go system uses.
 629   url::Component scheme, host;
 630   AutocompleteInput::ParseForEmphasizeComponents(
 631       text(), ChromeAutocompleteSchemeClassifier(profile_), &scheme, &host);
 632   bool grey_out_url = text().substr(scheme.begin, scheme.len) ==
 633       base::UTF8ToUTF16(extensions::kExtensionScheme);
 634   bool grey_base = text_is_url && (host.is_nonempty() || grey_out_url);
 635   SetColor(location_bar_view_->GetColor(
 636       security_level_,
 637       grey_base ? LocationBarView::DEEMPHASIZED_TEXT : LocationBarView::TEXT));
 638   if (grey_base && !grey_out_url) {
 639     ApplyColor(
 640         location_bar_view_->GetColor(security_level_, LocationBarView::TEXT),
 641         gfx::Range(host.begin, host.end()));
 642   }
 643
 644   // Emphasize the scheme for security UI display purposes (if necessary).
 645   // Note that we check CurrentTextIsURL() because if we're replacing search
 646   // URLs with search terms, we may have a non-URL even when the user is not
 647   // editing; and in some cases, e.g. for "site:foo.com" searches, the parser
 648   // may have incorrectly identified a qualifier as a scheme.
 649   SetStyle(gfx::DIAGONAL_STRIKE, false);
 650   if (!model()->user_input_in_progress() && text_is_url &&
 651       scheme.is_nonempty() && (security_level_ != SecurityStateModel::NONE)) {
 652     SkColor security_color = location_bar_view_->GetColor(
 653         security_level_, LocationBarView::SECURITY_TEXT);
 654     const bool strike = (security_level_ == SecurityStateModel::SECURITY_ERROR);
 655     const gfx::Range scheme_range(scheme.begin, scheme.end());
 656     ApplyColor(security_color, scheme_range);
 657     ApplyStyle(gfx::DIAGONAL_STRIKE, strike, scheme_range);
 658   }
 659 }
 660
 661 bool OmniboxViewViews::OnKeyReleased(const ui::KeyEvent& event) {
 662   // The omnibox contents may change while the control key is pressed.
 663   if (event.key_code() == ui::VKEY_CONTROL)
 664     model()->OnControlKeyChanged(false);
 665   return views::Textfield::OnKeyReleased(event);
 666 }
 667
 668 bool OmniboxViewViews::IsItemForCommandIdDynamic(int command_id) const {
 669   return command_id == IDS_PASTE_AND_GO;
 670 }
 671
 672 base::string16 OmniboxViewViews::GetLabelForCommandId(int command_id) const {
 673   DCHECK_EQ(IDS_PASTE_AND_GO, command_id);
 674   return l10n_util::GetStringUTF16(
 675       model()->IsPasteAndSearch(GetClipboardText()) ?
 676           IDS_PASTE_AND_SEARCH : IDS_PASTE_AND_GO);
 677 }
 678
 679 const char* OmniboxViewViews::GetClassName() const {
 680   return kViewClassName;
 681 }
 682
 683 bool OmniboxViewViews::OnMousePressed(const ui::MouseEvent& event) {
 684   select_all_on_mouse_release_ =
 685       (event.IsOnlyLeftMouseButton() || event.IsOnlyRightMouseButton()) &&
 686       (!HasFocus() || (model()->focus_state() == OMNIBOX_FOCUS_INVISIBLE));
 687   if (select_all_on_mouse_release_) {
 688     // Restore caret visibility whenever the user clicks in the omnibox in a way
 689     // that would give it focus.  We must handle this case separately here
 690     // because if the omnibox currently has invisible focus, the mouse event
 691     // won't trigger either SetFocus() or OmniboxEditModel::OnSetFocus().
 692     model()->SetCaretVisibility(true);
 693
 694     // When we're going to select all on mouse release, invalidate any saved
 695     // selection lest restoring it fights with the "select all" action.  It's
 696     // possible to later set select_all_on_mouse_release_ back to false, but
 697     // that happens for things like dragging, which are cases where having
 698     // invalidated this saved selection is still OK.
 699     saved_selection_for_focus_change_ = gfx::Range::InvalidRange();
 700   }
 701   return views::Textfield::OnMousePressed(event);
 702 }
 703
 704 bool OmniboxViewViews::OnMouseDragged(const ui::MouseEvent& event) {
 705   if (ExceededDragThreshold(event.location() - last_click_location()))
 706     select_all_on_mouse_release_ = false;
 707
 708   if (HasTextBeingDragged())
 709     CloseOmniboxPopup();
 710
 711   return views::Textfield::OnMouseDragged(event);
 712 }
 713
 714 void OmniboxViewViews::OnMouseReleased(const ui::MouseEvent& event) {
 715   views::Textfield::OnMouseReleased(event);
 716   if (event.IsOnlyLeftMouseButton() || event.IsOnlyRightMouseButton()) {
 717     // When the user has clicked and released to give us focus, select all
 718     // unless we're omitting the URL (in which case refining an existing query
 719     // is common enough that we do click-to-place-cursor).
 720     if (select_all_on_mouse_release_ &&
 721         !controller()->GetToolbarModel()->WouldReplaceURL()) {
 722       // Select all in the reverse direction so as not to scroll the caret
 723       // into view and shift the contents jarringly.
 724       SelectAll(true);
 725     }
 726   }
 727   select_all_on_mouse_release_ = false;
 728 }
 729
 730 bool OmniboxViewViews::OnKeyPressed(const ui::KeyEvent& event) {
 731   // Skip processing of [Alt]+<num-pad digit> Unicode alt key codes.
 732   // Otherwise, if num-lock is off, the events are handled as [Up], [Down], etc.
 733   if (event.IsUnicodeKeyCode())
 734     return views::Textfield::OnKeyPressed(event);
 735
 736   const bool shift = event.IsShiftDown();
 737   const bool control = event.IsControlDown();
 738   const bool alt = event.IsAltDown() || event.IsAltGrDown();
 739   switch (event.key_code()) {
 740     case ui::VKEY_RETURN:
 741       model()->AcceptInput(alt ? NEW_FOREGROUND_TAB : CURRENT_TAB, false);
 742       return true;
 743     case ui::VKEY_ESCAPE:
 744       return model()->OnEscapeKeyPressed();
 745     case ui::VKEY_CONTROL:
 746       model()->OnControlKeyChanged(true);
 747       break;
 748     case ui::VKEY_DELETE:
 749       if (shift && model()->popup_model()->IsOpen())
 750         model()->popup_model()->TryDeletingCurrentItem();
 751       break;
 752     case ui::VKEY_UP:
 753       if (!read_only()) {
 754         model()->OnUpOrDownKeyPressed(-1);
 755         return true;
 756       }
 757       break;
 758     case ui::VKEY_DOWN:
 759       if (!read_only()) {
 760         model()->OnUpOrDownKeyPressed(1);
 761         return true;
 762       }
 763       break;
 764     case ui::VKEY_PRIOR:
 765       if (control || alt || shift)
 766         return false;
 767       model()->OnUpOrDownKeyPressed(-1 * model()->result().size());
 768       return true;
 769     case ui::VKEY_NEXT:
 770       if (control || alt || shift)
 771         return false;
 772       model()->OnUpOrDownKeyPressed(model()->result().size());
 773       return true;
 774     case ui::VKEY_V:
 775       if (control && !alt && !read_only()) {
 776         ExecuteCommand(IDS_APP_PASTE, 0);
 777         return true;
 778       }
 779       break;
 780     case ui::VKEY_INSERT:
 781       if (shift && !control && !read_only()) {
 782         ExecuteCommand(IDS_APP_PASTE, 0);
 783         return true;
 784       }
 785       break;
 786     default:
 787       break;
 788   }
 789
 790   return views::Textfield::OnKeyPressed(event) || HandleEarlyTabActions(event);
 791 }
 792
 793 void OmniboxViewViews::OnGestureEvent(ui::GestureEvent* event) {
 794   if (!HasFocus() && event->type() == ui::ET_GESTURE_TAP_DOWN) {
 795     select_all_on_gesture_tap_ = true;
 796
 797     // If we're trying to select all on tap, invalidate any saved selection lest
 798     // restoring it fights with the "select all" action.
 799     saved_selection_for_focus_change_ = gfx::Range::InvalidRange();
 800   }
 801
 802   views::Textfield::OnGestureEvent(event);
 803
 804   if (select_all_on_gesture_tap_ && event->type() == ui::ET_GESTURE_TAP)
 805     SelectAll(true);
 806
 807   if (event->type() == ui::ET_GESTURE_TAP ||
 808       event->type() == ui::ET_GESTURE_TAP_CANCEL ||
 809       event->type() == ui::ET_GESTURE_TWO_FINGER_TAP ||
 810       event->type() == ui::ET_GESTURE_SCROLL_BEGIN ||
 811       event->type() == ui::ET_GESTURE_PINCH_BEGIN ||
 812       event->type() == ui::ET_GESTURE_LONG_PRESS ||
 813       event->type() == ui::ET_GESTURE_LONG_TAP) {
 814     select_all_on_gesture_tap_ = false;
 815   }
 816 }
 817
 818 void OmniboxViewViews::AboutToRequestFocusFromTabTraversal(bool reverse) {
 819   views::Textfield::AboutToRequestFocusFromTabTraversal(reverse);
 820 }
 821
 822 bool OmniboxViewViews::SkipDefaultKeyEventProcessing(
 823     const ui::KeyEvent& event) {
 824   if (views::FocusManager::IsTabTraversalKeyEvent(event) &&
 825       ((model()->is_keyword_hint() && !event.IsShiftDown()) ||
 826        model()->popup_model()->IsOpen())) {
 827     return true;
 828   }
 829   if (event.key_code() == ui::VKEY_ESCAPE)
 830     return model()->WillHandleEscapeKey();
 831   return Textfield::SkipDefaultKeyEventProcessing(event);
 832 }
 833
 834 void OmniboxViewViews::GetAccessibleState(ui::AXViewState* state) {
 835   state->role = ui::AX_ROLE_TEXT_FIELD;
 836   state->name = l10n_util::GetStringUTF16(IDS_ACCNAME_LOCATION);
 837   state->value = GetText();
 838
 839   base::string16::size_type entry_start;
 840   base::string16::size_type entry_end;
 841   GetSelectionBounds(&entry_start, &entry_end);
 842   state->selection_start = entry_start;
 843   state->selection_end = entry_end;
 844
 845   if (popup_window_mode_) {
 846     state->AddStateFlag(ui::AX_STATE_READ_ONLY);
 847   } else {
 848     state->set_value_callback =
 849         base::Bind(&OmniboxViewViews::AccessibilitySetValue,
 850                    weak_ptr_factory_.GetWeakPtr());
 851   }
 852 }
 853
 854 void OmniboxViewViews::OnFocus() {
 855   views::Textfield::OnFocus();
 856   // TODO(oshima): Get control key state.
 857   model()->OnSetFocus(false);
 858   // Don't call controller()->OnSetFocus, this view has already acquired focus.
 859
 860   // Restore the selection we saved in OnBlur() if it's still valid.
 861   if (saved_selection_for_focus_change_.IsValid()) {
 862     SelectRange(saved_selection_for_focus_change_);
 863     saved_selection_for_focus_change_ = gfx::Range::InvalidRange();
 864   }
 865 }
 866
 867 void OmniboxViewViews::OnBlur() {
 868   // Save the user's existing selection to restore it later.
 869   saved_selection_for_focus_change_ = GetSelectedRange();
 870
 871   views::Textfield::OnBlur();
 872   model()->OnWillKillFocus();
 873
 874   // If ZeroSuggest is active, we may have refused to show an update to the
 875   // underlying permanent URL that happened while the popup was open, so
 876   // revert to ensure that update is shown now.  Otherwise, make sure to call
 877   // CloseOmniboxPopup() unconditionally, so that if ZeroSuggest is in the midst
 878   // of running but hasn't yet opened the popup, it will be halted.
 879   if (!model()->user_input_in_progress() && model()->popup_model()->IsOpen())
 880     RevertAll();
 881   else
 882     CloseOmniboxPopup();
 883
 884   // Tell the model to reset itself.
 885   model()->OnKillFocus();
 886
 887   // Make sure the beginning of the text is visible.
 888   SelectRange(gfx::Range(0));
 889 }
 890
 891 bool OmniboxViewViews::IsCommandIdEnabled(int command_id) const {
 892   if (command_id == IDS_APP_PASTE)
 893     return !read_only() && !GetClipboardText().empty();
 894   if (command_id == IDS_PASTE_AND_GO)
 895     return !read_only() && model()->CanPasteAndGo(GetClipboardText());
 896   if (command_id == IDS_SHOW_URL)
 897     return controller()->GetToolbarModel()->WouldReplaceURL();
 898   return command_id == IDS_MOVE_DOWN || command_id == IDS_MOVE_UP ||
 899          Textfield::IsCommandIdEnabled(command_id) ||
 900          location_bar_view_->command_updater()->IsCommandEnabled(command_id);
 901 }
 902
 903 base::string16 OmniboxViewViews::GetSelectionClipboardText() const {
 904   return SanitizeTextForPaste(Textfield::GetSelectionClipboardText());
 905 }
 906
 907 void OmniboxViewViews::DoInsertChar(base::char16 ch) {
 908   // If |insert_char_time_| is not null, there's a pending insert char operation
 909   // that hasn't been painted yet. Keep the earlier time.
 910   if (insert_char_time_.is_null())
 911     insert_char_time_ = base::TimeTicks::Now();
 912   Textfield::DoInsertChar(ch);
 913 }
 914
 915 #if defined(OS_CHROMEOS)
 916 void OmniboxViewViews::CandidateWindowOpened(
 917       chromeos::input_method::InputMethodManager* manager) {
 918   ime_candidate_window_open_ = true;
 919 }
 920
 921 void OmniboxViewViews::CandidateWindowClosed(
 922       chromeos::input_method::InputMethodManager* manager) {
 923   ime_candidate_window_open_ = false;
 924 }
 925 #endif
 926
 927 void OmniboxViewViews::ContentsChanged(views::Textfield* sender,
 928                                        const base::string16& new_contents) {
 929 }
 930
 931 bool OmniboxViewViews::HandleKeyEvent(views::Textfield* textfield,
 932                                       const ui::KeyEvent& event) {
 933   delete_at_end_pressed_ = false;
 934
 935   if (event.key_code() == ui::VKEY_BACK) {
 936     // No extra handling is needed in keyword search mode, if there is a
 937     // non-empty selection, or if the cursor is not leading the text.
 938     if (model()->is_keyword_hint() || model()->keyword().empty() ||
 939         HasSelection() || GetCursorPosition() != 0)
 940       return false;
 941     model()->ClearKeyword();
 942     return true;
 943   }
 944
 945   if (event.key_code() == ui::VKEY_DELETE && !event.IsAltDown()) {
 946     delete_at_end_pressed_ =
 947         (!HasSelection() && GetCursorPosition() == text().length());
 948   }
 949
 950   // Handle the right-arrow key for LTR text and the left-arrow key for RTL text
 951   // if there is gray text that needs to be committed.
 952   if (GetCursorPosition() == text().length()) {
 953     base::i18n::TextDirection direction = GetTextDirection();
 954     if ((direction == base::i18n::LEFT_TO_RIGHT &&
 955          event.key_code() == ui::VKEY_RIGHT) ||
 956         (direction == base::i18n::RIGHT_TO_LEFT &&
 957          event.key_code() == ui::VKEY_LEFT)) {
 958       return model()->CommitSuggestedText();
 959     }
 960   }
 961
 962   return false;
 963 }
 964
 965 void OmniboxViewViews::OnBeforeUserAction(views::Textfield* sender) {
 966   OnBeforePossibleChange();
 967 }
 968
 969 void OmniboxViewViews::OnAfterUserAction(views::Textfield* sender) {
 970   OnAfterPossibleChange();
 971 }
 972
 973 void OmniboxViewViews::OnAfterCutOrCopy(ui::ClipboardType clipboard_type) {
 974   ui::Clipboard* cb = ui::Clipboard::GetForCurrentThread();
 975   base::string16 selected_text;
 976   cb->ReadText(clipboard_type, &selected_text);
 977   GURL url;
 978   bool write_url;
 979   model()->AdjustTextForCopy(GetSelectedRange().GetMin(), IsSelectAll(),
 980                              &selected_text, &url, &write_url);
 981   if (IsSelectAll())
 982     UMA_HISTOGRAM_COUNTS(OmniboxEditModel::kCutOrCopyAllTextHistogram, 1);
 983
 984   if (write_url) {
 985     BookmarkNodeData data;
 986     data.ReadFromTuple(url, selected_text);
 987     data.WriteToClipboard(clipboard_type);
 988   } else {
 989     ui::ScopedClipboardWriter scoped_clipboard_writer(clipboard_type);
 990     scoped_clipboard_writer.WriteText(selected_text);
 991   }
 992 }
 993
 994 void OmniboxViewViews::OnWriteDragData(ui::OSExchangeData* data) {
 995   GURL url;
 996   bool write_url;
 997   bool is_all_selected = IsSelectAll();
 998   base::string16 selected_text = GetSelectedText();
 999   model()->AdjustTextForCopy(GetSelectedRange().GetMin(), is_all_selected,
1000                              &selected_text, &url, &write_url);
1001   data->SetString(selected_text);
1002   if (write_url) {
1003     gfx::Image favicon;
1004     base::string16 title = selected_text;
1005     if (is_all_selected)
1006       model()->GetDataForURLExport(&url, &title, &favicon);
1007     button_drag_utils::SetURLAndDragImage(url, title, favicon.AsImageSkia(),
1008                                           NULL, data, GetWidget());
1009     data->SetURL(url, title);
1010   }
1011 }
1012
1013 void OmniboxViewViews::OnGetDragOperationsForTextfield(int* drag_operations) {
1014   base::string16 selected_text = GetSelectedText();
1015   GURL url;
1016   bool write_url;
1017   model()->AdjustTextForCopy(GetSelectedRange().GetMin(), IsSelectAll(),
1018                              &selected_text, &url, &write_url);
1019   if (write_url)
1020     *drag_operations |= ui::DragDropTypes::DRAG_LINK;
1021 }
1022
1023 void OmniboxViewViews::AppendDropFormats(
1024     int* formats,
1025     std::set<ui::OSExchangeData::CustomFormat>* custom_formats) {
1026   *formats = *formats | ui::OSExchangeData::URL;
1027 }
1028
1029 int OmniboxViewViews::OnDrop(const ui::OSExchangeData& data) {
1030   if (HasTextBeingDragged())
1031     return ui::DragDropTypes::DRAG_NONE;
1032
1033   if (data.HasURL(ui::OSExchangeData::CONVERT_FILENAMES)) {
1034     GURL url;
1035     base::string16 title;
1036     if (data.GetURLAndTitle(
1037             ui::OSExchangeData::CONVERT_FILENAMES, &url, &title)) {
1038       base::string16 text(
1039           StripJavascriptSchemas(base::UTF8ToUTF16(url.spec())));
1040       if (model()->CanPasteAndGo(text)) {
1041         model()->PasteAndGo(text);
1042         return ui::DragDropTypes::DRAG_COPY;
1043       }
1044     }
1045   } else if (data.HasString()) {
1046     base::string16 text;
1047     if (data.GetString(&text)) {
1048       base::string16 collapsed_text(base::CollapseWhitespace(text, true));
1049       if (model()->CanPasteAndGo(collapsed_text))
1050         model()->PasteAndGo(collapsed_text);
1051       return ui::DragDropTypes::DRAG_COPY;
1052     }
1053   }
1054
1055   return ui::DragDropTypes::DRAG_NONE;
1056 }
1057
1058 void OmniboxViewViews::UpdateContextMenu(ui::SimpleMenuModel* menu_contents) {
1059   int paste_position = menu_contents->GetIndexOfCommandId(IDS_APP_PASTE);
1060   DCHECK_GE(paste_position, 0);
1061   menu_contents->InsertItemWithStringIdAt(
1062       paste_position + 1, IDS_PASTE_AND_GO, IDS_PASTE_AND_GO);
1063
1064   menu_contents->AddSeparator(ui::NORMAL_SEPARATOR);
1065
1066   if (search::IsQueryExtractionEnabled()) {
1067     int select_all_position = menu_contents->GetIndexOfCommandId(
1068         IDS_APP_SELECT_ALL);
1069     DCHECK_GE(select_all_position, 0);
1070     menu_contents->InsertItemWithStringIdAt(
1071         select_all_position + 1, IDS_SHOW_URL, IDS_SHOW_URL);
1072   }
1073
1074   // Minor note: We use IDC_ for command id here while the underlying textfield
1075   // is using IDS_ for all its command ids. This is because views cannot depend
1076   // on IDC_ for now.
1077   menu_contents->AddItemWithStringId(IDC_EDIT_SEARCH_ENGINES,
1078       IDS_EDIT_SEARCH_ENGINES);
1079 }