src/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 "base/command_line.h"
   8 #include "base/logging.h"
   9 #include "base/metrics/histogram.h"
  10 #include "base/strings/string_util.h"
  11 #include "base/strings/utf_string_conversions.h"
  12 #include "chrome/app/chrome_command_ids.h"
  13 #include "chrome/browser/autocomplete/autocomplete_input.h"
  14 #include "chrome/browser/autocomplete/autocomplete_match.h"
  15 #include "chrome/browser/command_updater.h"
  16 #include "chrome/browser/search/search.h"
  17 #include "chrome/browser/ui/omnibox/omnibox_edit_controller.h"
  18 #include "chrome/browser/ui/omnibox/omnibox_edit_model.h"
  19 #include "chrome/browser/ui/omnibox/omnibox_popup_model.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/browser/ui/views/website_settings/website_settings_popup_view.h"
  25 #include "components/bookmarks/core/browser/bookmark_node_data.h"
  26 #include "content/public/browser/web_contents.h"
  27 #include "extensions/common/constants.h"
  28 #include "grit/app_locale_settings.h"
  29 #include "grit/generated_resources.h"
  30 #include "grit/ui_strings.h"
  31 #include "net/base/escape.h"
  32 #include "third_party/skia/include/core/SkColor.h"
  33 #include "ui/accessibility/ax_view_state.h"
  34 #include "ui/aura/client/focus_client.h"
  35 #include "ui/aura/window_event_dispatcher.h"
  36 #include "ui/base/clipboard/scoped_clipboard_writer.h"
  37 #include "ui/base/dragdrop/drag_drop_types.h"
  38 #include "ui/base/dragdrop/os_exchange_data.h"
  39 #include "ui/base/ime/text_input_client.h"
  40 #include "ui/base/ime/text_input_type.h"
  41 #include "ui/base/l10n/l10n_util.h"
  42 #include "ui/base/models/simple_menu_model.h"
  43 #include "ui/base/resource/resource_bundle.h"
  44 #include "ui/compositor/layer.h"
  45 #include "ui/events/event.h"
  46 #include "ui/gfx/animation/slide_animation.h"
  47 #include "ui/gfx/canvas.h"
  48 #include "ui/gfx/font_list.h"
  49 #include "ui/gfx/selection_model.h"
  50 #include "ui/views/border.h"
  51 #include "ui/views/button_drag_utils.h"
  52 #include "ui/views/controls/textfield/textfield.h"
  53 #include "ui/views/ime/input_method.h"
  54 #include "ui/views/layout/fill_layout.h"
  55 #include "ui/views/views_delegate.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 namespace {
  64
  65 // Stores omnibox state for each tab.
  66 struct OmniboxState : public base::SupportsUserData::Data {
  67   static const char kKey[];
  68
  69   OmniboxState(const OmniboxEditModel::State& model_state,
  70                const gfx::Range& selection,
  71                const gfx::Range& saved_selection_for_focus_change);
  72   virtual ~OmniboxState();
  73
  74   const OmniboxEditModel::State model_state;
  75
  76   // We store both the actual selection and any saved selection (for when the
  77   // omnibox is not focused).  This allows us to properly handle cases like
  78   // selecting text, tabbing out of the omnibox, switching tabs away and back,
  79   // and tabbing back into the omnibox.
  80   const gfx::Range selection;
  81   const gfx::Range saved_selection_for_focus_change;
  82 };
  83
  84 // static
  85 const char OmniboxState::kKey[] = "OmniboxState";
  86
  87 OmniboxState::OmniboxState(const OmniboxEditModel::State& model_state,
  88                            const gfx::Range& selection,
  89                            const gfx::Range& saved_selection_for_focus_change)
  90     : model_state(model_state),
  91       selection(selection),
  92       saved_selection_for_focus_change(saved_selection_for_focus_change) {
  93 }
  94
  95 OmniboxState::~OmniboxState() {}
  96
  97 // We'd like to set the text input type to TEXT_INPUT_TYPE_URL, because this
  98 // triggers URL-specific layout in software keyboards, e.g. adding top-level "/"
  99 // and ".com" keys for English.  However, this also causes IMEs to default to
 100 // Latin character mode, which makes entering search queries difficult for IME
 101 // users.  Therefore, we try to guess whether an IME will be used based on the
 102 // application language, and set the input type accordingly.
 103 ui::TextInputType DetermineTextInputType() {
 104 #if defined(OS_WIN)
 105   DCHECK(g_browser_process);
 106   const std::string& locale = g_browser_process->GetApplicationLocale();
 107   const std::string& language = locale.substr(0, 2);
 108   // Assume CJK + Thai users are using an IME.
 109   if (language == "ja" ||
 110       language == "ko" ||
 111       language == "th" ||
 112       language == "zh")
 113     return ui::TEXT_INPUT_TYPE_SEARCH;
 114 #endif
 115   return ui::TEXT_INPUT_TYPE_URL;
 116 }
 117
 118 }  // namespace
 119
 120 // static
 121 const char OmniboxViewViews::kViewClassName[] = "OmniboxViewViews";
 122
 123 OmniboxViewViews::OmniboxViewViews(OmniboxEditController* controller,
 124                                    Profile* profile,
 125                                    CommandUpdater* command_updater,
 126                                    bool popup_window_mode,
 127                                    LocationBarView* location_bar,
 128                                    const gfx::FontList& font_list)
 129     : OmniboxView(profile, controller, command_updater),
 130       popup_window_mode_(popup_window_mode),
 131       security_level_(ToolbarModel::NONE),
 132       saved_selection_for_focus_change_(gfx::Range::InvalidRange()),
 133       ime_composing_before_change_(false),
 134       delete_at_end_pressed_(false),
 135       location_bar_view_(location_bar),
 136       ime_candidate_window_open_(false),
 137       select_all_on_mouse_release_(false),
 138       select_all_on_gesture_tap_(false) {
 139   SetBorder(views::Border::NullBorder());
 140   set_id(VIEW_ID_OMNIBOX);
 141   SetFontList(font_list);
 142 }
 143
 144 OmniboxViewViews::~OmniboxViewViews() {
 145 #if defined(OS_CHROMEOS)
 146   chromeos::input_method::InputMethodManager::Get()->
 147       RemoveCandidateWindowObserver(this);
 148 #endif
 149
 150   // Explicitly teardown members which have a reference to us.  Just to be safe
 151   // we want them to be destroyed before destroying any other internal state.
 152   popup_view_.reset();
 153 }
 154
 155 ////////////////////////////////////////////////////////////////////////////////
 156 // OmniboxViewViews public:
 157
 158 void OmniboxViewViews::Init() {
 159   set_controller(this);
 160   SetTextInputType(DetermineTextInputType());
 161
 162   if (popup_window_mode_)
 163     SetReadOnly(true);
 164
 165   // Initialize the popup view using the same font.
 166   popup_view_.reset(OmniboxPopupContentsView::Create(
 167       GetFontList(), this, model(), location_bar_view_));
 168
 169 #if defined(OS_CHROMEOS)
 170   chromeos::input_method::InputMethodManager::Get()->
 171       AddCandidateWindowObserver(this);
 172 #endif
 173
 174   fade_in_animation_.reset(new gfx::SlideAnimation(this));
 175   fade_in_animation_->SetTweenType(gfx::Tween::LINEAR);
 176   fade_in_animation_->SetSlideDuration(300);
 177 }
 178
 179 void OmniboxViewViews::FadeIn() {
 180   fade_in_animation_->Show();
 181 }
 182
 183 ////////////////////////////////////////////////////////////////////////////////
 184 // OmniboxViewViews, public OmniboxView implementation:
 185
 186 void OmniboxViewViews::SaveStateToTab(content::WebContents* tab) {
 187   DCHECK(tab);
 188
 189   // We don't want to keep the IME status, so force quit the current
 190   // session here.  It may affect the selection status, so order is
 191   // also important.
 192   if (IsIMEComposing()) {
 193     GetTextInputClient()->ConfirmCompositionText();
 194     GetInputMethod()->CancelComposition(this);
 195   }
 196
 197   // NOTE: GetStateForTabSwitch() may affect GetSelectedRange(), so order is
 198   // important.
 199   OmniboxEditModel::State state = model()->GetStateForTabSwitch();
 200   tab->SetUserData(OmniboxState::kKey, new OmniboxState(
 201       state, GetSelectedRange(), saved_selection_for_focus_change_));
 202 }
 203
 204 void OmniboxViewViews::OnTabChanged(const content::WebContents* web_contents) {
 205   security_level_ = controller()->GetToolbarModel()->GetSecurityLevel(false);
 206
 207   const OmniboxState* state = static_cast<OmniboxState*>(
 208       web_contents->GetUserData(&OmniboxState::kKey));
 209   model()->RestoreState(state ? &state->model_state : NULL);
 210   if (state) {
 211     // This assumes that the omnibox has already been focused or blurred as
 212     // appropriate; otherwise, a subsequent OnFocus() or OnBlur() call could
 213     // goof up the selection.  See comments at the end of
 214     // BrowserView::ActiveTabChanged().
 215     SelectRange(state->selection);
 216     saved_selection_for_focus_change_ = state->saved_selection_for_focus_change;
 217   }
 218
 219   // TODO(msw|oshima): Consider saving/restoring edit history.
 220   ClearEditHistory();
 221 }
 222
 223 void OmniboxViewViews::Update() {
 224   if (chrome::ShouldDisplayOriginChip() || chrome::ShouldDisplayOriginChipV2())
 225     set_placeholder_text(GetHintText());
 226
 227   const ToolbarModel::SecurityLevel old_security_level = security_level_;
 228   security_level_ = controller()->GetToolbarModel()->GetSecurityLevel(false);
 229   if (model()->UpdatePermanentText()) {
 230     // Something visibly changed.  Re-enable URL replacement.
 231     controller()->GetToolbarModel()->set_url_replacement_enabled(true);
 232     model()->UpdatePermanentText();
 233
 234     // Select all the new text if the user had all the old text selected, or if
 235     // there was no previous text (for new tab page URL replacement extensions).
 236     // This makes one particular case better: the user clicks in the box to
 237     // change it right before the permanent URL is changed.  Since the new URL
 238     // is still fully selected, the user's typing will replace the edit contents
 239     // as they'd intended.
 240     const bool was_select_all = IsSelectAll();
 241     const bool was_reversed = GetSelectedRange().is_reversed();
 242
 243     RevertAll();
 244
 245     // Only select all when we have focus.  If we don't have focus, selecting
 246     // all is unnecessary since the selection will change on regaining focus,
 247     // and can in fact cause artifacts, e.g. if the user is on the NTP and
 248     // clicks a link to navigate, causing |was_select_all| to be vacuously true
 249     // for the empty omnibox, and we then select all here, leading to the
 250     // trailing portion of a long URL being scrolled into view.  We could try
 251     // and address cases like this, but it seems better to just not muck with
 252     // things when the omnibox isn't focused to begin with.
 253     if (was_select_all && model()->has_focus())
 254       SelectAll(was_reversed);
 255   } else if (old_security_level != security_level_) {
 256     EmphasizeURLComponents();
 257   }
 258 }
 259
 260 base::string16 OmniboxViewViews::GetText() const {
 261   // TODO(oshima): IME support
 262   return text();
 263 }
 264
 265 void OmniboxViewViews::SetUserText(const base::string16& text,
 266                                    const base::string16& display_text,
 267                                    bool update_popup) {
 268   saved_selection_for_focus_change_ = gfx::Range::InvalidRange();
 269   OmniboxView::SetUserText(text, display_text, update_popup);
 270 }
 271
 272 void OmniboxViewViews::SetForcedQuery() {
 273   const base::string16 current_text(text());
 274   const size_t start = current_text.find_first_not_of(base::kWhitespaceUTF16);
 275   if (start == base::string16::npos || (current_text[start] != '?'))
 276     OmniboxView::SetUserText(base::ASCIIToUTF16("?"));
 277   else
 278     SelectRange(gfx::Range(current_text.size(), start + 1));
 279 }
 280
 281 void OmniboxViewViews::GetSelectionBounds(
 282     base::string16::size_type* start,
 283     base::string16::size_type* end) const {
 284   const gfx::Range range = GetSelectedRange();
 285   *start = static_cast<size_t>(range.start());
 286   *end = static_cast<size_t>(range.end());
 287 }
 288
 289 void OmniboxViewViews::SelectAll(bool reversed) {
 290   views::Textfield::SelectAll(reversed);
 291 }
 292
 293 void OmniboxViewViews::RevertAll() {
 294   saved_selection_for_focus_change_ = gfx::Range::InvalidRange();
 295   OmniboxView::RevertAll();
 296 }
 297
 298 void OmniboxViewViews::SetFocus() {
 299   RequestFocus();
 300   // Restore caret visibility if focus is explicitly requested. This is
 301   // necessary because if we already have invisible focus, the RequestFocus()
 302   // call above will short-circuit, preventing us from reaching
 303   // OmniboxEditModel::OnSetFocus(), which handles restoring visibility when the
 304   // omnibox regains focus after losing focus.
 305   model()->SetCaretVisibility(true);
 306 }
 307
 308 int OmniboxViewViews::GetTextWidth() const {
 309   // Returns the width necessary to display the current text, including any
 310   // necessary space for the cursor or border/margin.
 311   return GetRenderText()->GetContentWidth() + GetInsets().width();
 312 }
 313
 314 bool OmniboxViewViews::IsImeComposing() const {
 315   return IsIMEComposing();
 316 }
 317
 318 void OmniboxViewViews::ExecuteCommand(int command_id, int event_flags) {
 319   switch (command_id) {
 320     // These commands don't invoke the popup via OnBefore/AfterPossibleChange().
 321     case IDS_PASTE_AND_GO:
 322       model()->PasteAndGo(GetClipboardText());
 323       break;
 324     case IDS_SHOW_URL:
 325       controller()->ShowURL();
 326       break;
 327     case IDC_EDIT_SEARCH_ENGINES:
 328       command_updater()->ExecuteCommand(command_id);
 329       break;
 330     case IDS_MOVE_DOWN:
 331     case IDS_MOVE_UP:
 332       model()->OnUpOrDownKeyPressed(command_id == IDS_MOVE_DOWN ? 1 : -1);
 333       break;
 334
 335     default:
 336       OnBeforePossibleChange();
 337       if (command_id == IDS_APP_PASTE)
 338         OnPaste();
 339       else if (Textfield::IsCommandIdEnabled(command_id))
 340         Textfield::ExecuteCommand(command_id, event_flags);
 341       else
 342         command_updater()->ExecuteCommand(command_id);
 343       OnAfterPossibleChange();
 344       break;
 345   }
 346 }
 347
 348 ////////////////////////////////////////////////////////////////////////////////
 349 // OmniboxViewViews, private:
 350
 351 int OmniboxViewViews::GetOmniboxTextLength() const {
 352   // TODO(oshima): Support IME.
 353   return static_cast<int>(text().length());
 354 }
 355
 356 void OmniboxViewViews::EmphasizeURLComponents() {
 357   // See whether the contents are a URL with a non-empty host portion, which we
 358   // should emphasize.  To check for a URL, rather than using the type returned
 359   // by Parse(), ask the model, which will check the desired page transition for
 360   // this input.  This can tell us whether an UNKNOWN input string is going to
 361   // be treated as a search or a navigation, and is the same method the Paste
 362   // And Go system uses.
 363   url::Component scheme, host;
 364   AutocompleteInput::ParseForEmphasizeComponents(text(), &scheme, &host);
 365   bool grey_out_url = text().substr(scheme.begin, scheme.len) ==
 366       base::UTF8ToUTF16(extensions::kExtensionScheme);
 367   bool grey_base = model()->CurrentTextIsURL() &&
 368       (host.is_nonempty() || grey_out_url);
 369   SetColor(location_bar_view_->GetColor(
 370       security_level_,
 371       grey_base ? LocationBarView::DEEMPHASIZED_TEXT : LocationBarView::TEXT));
 372   if (grey_base && !grey_out_url) {
 373     ApplyColor(
 374         location_bar_view_->GetColor(security_level_, LocationBarView::TEXT),
 375         gfx::Range(host.begin, host.end()));
 376   }
 377
 378   // Emphasize the scheme for security UI display purposes (if necessary).
 379   // Note that we check CurrentTextIsURL() because if we're replacing search
 380   // URLs with search terms, we may have a non-URL even when the user is not
 381   // editing; and in some cases, e.g. for "site:foo.com" searches, the parser
 382   // may have incorrectly identified a qualifier as a scheme.
 383   SetStyle(gfx::DIAGONAL_STRIKE, false);
 384   if (!model()->user_input_in_progress() && model()->CurrentTextIsURL() &&
 385       scheme.is_nonempty() && (security_level_ != ToolbarModel::NONE)) {
 386     SkColor security_color = location_bar_view_->GetColor(
 387         security_level_, LocationBarView::SECURITY_TEXT);
 388     const bool strike = (security_level_ == ToolbarModel::SECURITY_ERROR);
 389     const gfx::Range scheme_range(scheme.begin, scheme.end());
 390     ApplyColor(security_color, scheme_range);
 391     ApplyStyle(gfx::DIAGONAL_STRIKE, strike, scheme_range);
 392   }
 393 }
 394
 395 void OmniboxViewViews::SetTextAndSelectedRange(const base::string16& text,
 396                                                const gfx::Range& range) {
 397   SetText(text);
 398   SelectRange(range);
 399 }
 400
 401 base::string16 OmniboxViewViews::GetSelectedText() const {
 402   // TODO(oshima): Support IME.
 403   return views::Textfield::GetSelectedText();
 404 }
 405
 406 void OmniboxViewViews::OnPaste() {
 407   const base::string16 text(GetClipboardText());
 408   if (!text.empty()) {
 409     // Record this paste, so we can do different behavior.
 410     model()->OnPaste();
 411     // Force a Paste operation to trigger the text_changed code in
 412     // OnAfterPossibleChange(), even if identical contents are pasted.
 413     text_before_change_.clear();
 414     InsertOrReplaceText(text);
 415   }
 416 }
 417
 418 bool OmniboxViewViews::HandleEarlyTabActions(const ui::KeyEvent& event) {
 419   // This must run before acclerator handling invokes a focus change on tab.
 420   // Note the parallel with SkipDefaultKeyEventProcessing above.
 421   if (views::FocusManager::IsTabTraversalKeyEvent(event)) {
 422     if (model()->is_keyword_hint() && !event.IsShiftDown()) {
 423       model()->AcceptKeyword(ENTERED_KEYWORD_MODE_VIA_TAB);
 424       return true;
 425     }
 426     if (model()->popup_model()->IsOpen()) {
 427       if (event.IsShiftDown() &&
 428           model()->popup_model()->selected_line_state() ==
 429               OmniboxPopupModel::KEYWORD) {
 430         model()->ClearKeyword(text());
 431       } else {
 432         model()->OnUpOrDownKeyPressed(event.IsShiftDown() ? -1 : 1);
 433       }
 434       return true;
 435     }
 436   }
 437
 438   return false;
 439 }
 440
 441 ////////////////////////////////////////////////////////////////////////////////
 442 // OmniboxViewViews, private View implementation:
 443
 444 void OmniboxViewViews::OnNativeThemeChanged(const ui::NativeTheme* theme) {
 445   views::Textfield::OnNativeThemeChanged(theme);
 446   SetBackgroundColor(location_bar_view_->GetColor(
 447       ToolbarModel::NONE, LocationBarView::BACKGROUND));
 448   EmphasizeURLComponents();
 449 }
 450
 451 ////////////////////////////////////////////////////////////////////////////////
 452 // OmniboxViewViews, private OmniboxView implementation:
 453
 454 void OmniboxViewViews::SetWindowTextAndCaretPos(const base::string16& text,
 455                                                 size_t caret_pos,
 456                                                 bool update_popup,
 457                                                 bool notify_text_changed) {
 458   const gfx::Range range(caret_pos, caret_pos);
 459   SetTextAndSelectedRange(text, range);
 460
 461   if (update_popup)
 462     UpdatePopup();
 463
 464   if (notify_text_changed)
 465     TextChanged();
 466 }
 467
 468 bool OmniboxViewViews::IsSelectAll() const {
 469   // TODO(oshima): IME support.
 470   return text() == GetSelectedText();
 471 }
 472
 473 bool OmniboxViewViews::DeleteAtEndPressed() {
 474   return delete_at_end_pressed_;
 475 }
 476
 477 void OmniboxViewViews::UpdatePopup() {
 478   model()->SetInputInProgress(true);
 479   if (!model()->has_focus())
 480     return;
 481
 482   // Prevent inline autocomplete when the caret isn't at the end of the text.
 483   const gfx::Range sel = GetSelectedRange();
 484   model()->StartAutocomplete(!sel.is_empty(), sel.GetMax() < text().length());
 485 }
 486
 487 void OmniboxViewViews::ApplyCaretVisibility() {
 488   SetCursorEnabled(model()->is_caret_visible());
 489 }
 490
 491 void OmniboxViewViews::OnTemporaryTextMaybeChanged(
 492     const base::string16& display_text,
 493     bool save_original_selection,
 494     bool notify_text_changed) {
 495   if (save_original_selection)
 496     saved_temporary_selection_ = GetSelectedRange();
 497
 498   SetWindowTextAndCaretPos(display_text, display_text.length(), false,
 499                            notify_text_changed);
 500 }
 501
 502 bool OmniboxViewViews::OnInlineAutocompleteTextMaybeChanged(
 503     const base::string16& display_text,
 504     size_t user_text_length) {
 505   if (display_text == text())
 506     return false;
 507
 508   if (IsIMEComposing()) {
 509     location_bar_view_->SetImeInlineAutocompletion(
 510         display_text.substr(user_text_length));
 511   } else {
 512     gfx::Range range(display_text.size(), user_text_length);
 513     SetTextAndSelectedRange(display_text, range);
 514   }
 515   TextChanged();
 516   return true;
 517 }
 518
 519 void OmniboxViewViews::OnInlineAutocompleteTextCleared() {
 520   // Hide the inline autocompletion for IME users.
 521   location_bar_view_->SetImeInlineAutocompletion(base::string16());
 522 }
 523
 524 void OmniboxViewViews::OnRevertTemporaryText() {
 525   SelectRange(saved_temporary_selection_);
 526   // We got here because the user hit the Escape key. We explicitly don't call
 527   // TextChanged(), since OmniboxPopupModel::ResetToDefaultMatch() has already
 528   // been called by now, and it would've called TextChanged() if it was
 529   // warranted.
 530 }
 531
 532 void OmniboxViewViews::OnBeforePossibleChange() {
 533   // Record our state.
 534   text_before_change_ = text();
 535   sel_before_change_ = GetSelectedRange();
 536   ime_composing_before_change_ = IsIMEComposing();
 537 }
 538
 539 bool OmniboxViewViews::OnAfterPossibleChange() {
 540   // See if the text or selection have changed since OnBeforePossibleChange().
 541   const base::string16 new_text = text();
 542   const gfx::Range new_sel = GetSelectedRange();
 543   const bool text_changed = (new_text != text_before_change_) ||
 544       (ime_composing_before_change_ != IsIMEComposing());
 545   const bool selection_differs =
 546       !((sel_before_change_.is_empty() && new_sel.is_empty()) ||
 547         sel_before_change_.EqualsIgnoringDirection(new_sel));
 548
 549   // When the user has deleted text, we don't allow inline autocomplete.  Make
 550   // sure to not flag cases like selecting part of the text and then pasting
 551   // (or typing) the prefix of that selection.  (We detect these by making
 552   // sure the caret, which should be after any insertion, hasn't moved
 553   // forward of the old selection start.)
 554   const bool just_deleted_text =
 555       (text_before_change_.length() > new_text.length()) &&
 556       (new_sel.start() <= sel_before_change_.GetMin());
 557
 558   const bool something_changed = model()->OnAfterPossibleChange(
 559       text_before_change_, new_text, new_sel.start(), new_sel.end(),
 560       selection_differs, text_changed, just_deleted_text, !IsIMEComposing());
 561
 562   // If only selection was changed, we don't need to call model()'s
 563   // OnChanged() method, which is called in TextChanged().
 564   // But we still need to call EmphasizeURLComponents() to make sure the text
 565   // attributes are updated correctly.
 566   if (something_changed && text_changed)
 567     TextChanged();
 568   else if (selection_differs)
 569     EmphasizeURLComponents();
 570   else if (delete_at_end_pressed_)
 571     model()->OnChanged();
 572
 573   return something_changed;
 574 }
 575
 576 gfx::NativeView OmniboxViewViews::GetNativeView() const {
 577   return GetWidget()->GetNativeView();
 578 }
 579
 580 gfx::NativeView OmniboxViewViews::GetRelativeWindowForPopup() const {
 581   return GetWidget()->GetTopLevelWidget()->GetNativeView();
 582 }
 583
 584 void OmniboxViewViews::SetGrayTextAutocompletion(const base::string16& input) {
 585   location_bar_view_->SetGrayTextAutocompletion(input);
 586 }
 587
 588 base::string16 OmniboxViewViews::GetGrayTextAutocompletion() const {
 589   return location_bar_view_->GetGrayTextAutocompletion();
 590 }
 591
 592 int OmniboxViewViews::GetWidth() const {
 593   return location_bar_view_->width();
 594 }
 595
 596 bool OmniboxViewViews::IsImeShowingPopup() const {
 597 #if defined(OS_CHROMEOS)
 598   return ime_candidate_window_open_;
 599 #else
 600   const views::InputMethod* input_method = this->GetInputMethod();
 601   return input_method && input_method->IsCandidatePopupOpen();
 602 #endif
 603 }
 604
 605 void OmniboxViewViews::ShowImeIfNeeded() {
 606   GetInputMethod()->ShowImeIfNeeded();
 607 }
 608
 609 void OmniboxViewViews::OnMatchOpened(const AutocompleteMatch& match,
 610                                      Profile* profile,
 611                                      content::WebContents* web_contents) const {
 612   extensions::MaybeShowExtensionControlledSearchNotification(
 613       profile, web_contents, match);
 614 }
 615
 616 bool OmniboxViewViews::IsCommandIdEnabled(int command_id) const {
 617   if (command_id == IDS_APP_PASTE)
 618     return !read_only() && !GetClipboardText().empty();
 619   if (command_id == IDS_PASTE_AND_GO)
 620     return !read_only() && model()->CanPasteAndGo(GetClipboardText());
 621   if (command_id == IDS_SHOW_URL)
 622     return controller()->GetToolbarModel()->WouldReplaceURL();
 623   return command_id == IDS_MOVE_DOWN || command_id == IDS_MOVE_UP ||
 624          Textfield::IsCommandIdEnabled(command_id) ||
 625          command_updater()->IsCommandEnabled(command_id);
 626 }
 627
 628 bool OmniboxViewViews::IsItemForCommandIdDynamic(int command_id) const {
 629   return command_id == IDS_PASTE_AND_GO;
 630 }
 631
 632 base::string16 OmniboxViewViews::GetLabelForCommandId(int command_id) const {
 633   DCHECK_EQ(IDS_PASTE_AND_GO, command_id);
 634   return l10n_util::GetStringUTF16(
 635       model()->IsPasteAndSearch(GetClipboardText()) ?
 636           IDS_PASTE_AND_SEARCH : IDS_PASTE_AND_GO);
 637 }
 638
 639 ////////////////////////////////////////////////////////////////////////////////
 640 // OmniboxViewViews, private views::Textfield implementation:
 641
 642 const char* OmniboxViewViews::GetClassName() const {
 643   return kViewClassName;
 644 }
 645
 646 void OmniboxViewViews::OnPaint(gfx::Canvas* canvas) {
 647   if (fade_in_animation_->is_animating()) {
 648     canvas->SaveLayerAlpha(static_cast<uint8>(
 649         fade_in_animation_->CurrentValueBetween(0, 255)));
 650     views::Textfield::OnPaint(canvas);
 651     canvas->Restore();
 652   } else {
 653     views::Textfield::OnPaint(canvas);
 654   }
 655 }
 656
 657 bool OmniboxViewViews::OnMousePressed(const ui::MouseEvent& event) {
 658   select_all_on_mouse_release_ =
 659       (event.IsOnlyLeftMouseButton() || event.IsOnlyRightMouseButton()) &&
 660       (!HasFocus() || (model()->focus_state() == OMNIBOX_FOCUS_INVISIBLE));
 661   if (select_all_on_mouse_release_) {
 662     // Restore caret visibility whenever the user clicks in the omnibox in a way
 663     // that would give it focus.  We must handle this case separately here
 664     // because if the omnibox currently has invisible focus, the mouse event
 665     // won't trigger either SetFocus() or OmniboxEditModel::OnSetFocus().
 666     model()->SetCaretVisibility(true);
 667
 668     // When we're going to select all on mouse release, invalidate any saved
 669     // selection lest restoring it fights with the "select all" action.  It's
 670     // possible to later set select_all_on_mouse_release_ back to false, but
 671     // that happens for things like dragging, which are cases where having
 672     // invalidated this saved selection is still OK.
 673     saved_selection_for_focus_change_ = gfx::Range::InvalidRange();
 674   }
 675   return views::Textfield::OnMousePressed(event);
 676 }
 677
 678 bool OmniboxViewViews::OnMouseDragged(const ui::MouseEvent& event) {
 679   if (ExceededDragThreshold(event.location() - last_click_location()))
 680     select_all_on_mouse_release_ = false;
 681
 682   if (HasTextBeingDragged())
 683     CloseOmniboxPopup();
 684
 685   return views::Textfield::OnMouseDragged(event);
 686 }
 687
 688 void OmniboxViewViews::OnMouseReleased(const ui::MouseEvent& event) {
 689   views::Textfield::OnMouseReleased(event);
 690   if (event.IsOnlyLeftMouseButton() || event.IsOnlyRightMouseButton()) {
 691     // When the user has clicked and released to give us focus, select all
 692     // unless we're omitting the URL (in which case refining an existing query
 693     // is common enough that we do click-to-place-cursor).
 694     if (select_all_on_mouse_release_ &&
 695         !controller()->GetToolbarModel()->WouldReplaceURL()) {
 696       // Select all in the reverse direction so as not to scroll the caret
 697       // into view and shift the contents jarringly.
 698       SelectAll(true);
 699     }
 700
 701     HandleOriginChipMouseRelease();
 702   }
 703   select_all_on_mouse_release_ = false;
 704 }
 705
 706 bool OmniboxViewViews::OnKeyPressed(const ui::KeyEvent& event) {
 707   // Skip processing of [Alt]+<num-pad digit> Unicode alt key codes.
 708   // Otherwise, if num-lock is off, the events are handled as [Up], [Down], etc.
 709   if (event.IsUnicodeKeyCode())
 710     return views::Textfield::OnKeyPressed(event);
 711
 712   const bool shift = event.IsShiftDown();
 713   const bool control = event.IsControlDown();
 714   const bool alt = event.IsAltDown() || event.IsAltGrDown();
 715   switch (event.key_code()) {
 716     case ui::VKEY_RETURN:
 717       model()->AcceptInput(alt ? NEW_FOREGROUND_TAB : CURRENT_TAB, false);
 718       return true;
 719     case ui::VKEY_ESCAPE:
 720       return model()->OnEscapeKeyPressed();
 721     case ui::VKEY_CONTROL:
 722       model()->OnControlKeyChanged(true);
 723       break;
 724     case ui::VKEY_DELETE:
 725       if (shift && model()->popup_model()->IsOpen())
 726         model()->popup_model()->TryDeletingCurrentItem();
 727       break;
 728     case ui::VKEY_UP:
 729       if (!read_only()) {
 730         model()->OnUpOrDownKeyPressed(-1);
 731         return true;
 732       }
 733       break;
 734     case ui::VKEY_DOWN:
 735       if (!read_only()) {
 736         model()->OnUpOrDownKeyPressed(1);
 737         return true;
 738       }
 739       break;
 740     case ui::VKEY_PRIOR:
 741       if (control || alt || shift)
 742         return false;
 743       model()->OnUpOrDownKeyPressed(-1 * model()->result().size());
 744       return true;
 745     case ui::VKEY_NEXT:
 746       if (control || alt || shift)
 747         return false;
 748       model()->OnUpOrDownKeyPressed(model()->result().size());
 749       return true;
 750     case ui::VKEY_V:
 751       if (control && !alt && !read_only()) {
 752         ExecuteCommand(IDS_APP_PASTE, 0);
 753         return true;
 754       }
 755       break;
 756     case ui::VKEY_INSERT:
 757       if (shift && !control && !read_only()) {
 758         ExecuteCommand(IDS_APP_PASTE, 0);
 759         return true;
 760       }
 761       break;
 762     default:
 763       break;
 764   }
 765
 766   return views::Textfield::OnKeyPressed(event) || HandleEarlyTabActions(event);
 767 }
 768
 769 bool OmniboxViewViews::OnKeyReleased(const ui::KeyEvent& event) {
 770   // The omnibox contents may change while the control key is pressed.
 771   if (event.key_code() == ui::VKEY_CONTROL)
 772     model()->OnControlKeyChanged(false);
 773   return views::Textfield::OnKeyReleased(event);
 774 }
 775
 776 void OmniboxViewViews::OnGestureEvent(ui::GestureEvent* event) {
 777   if (!HasFocus() && event->type() == ui::ET_GESTURE_TAP_DOWN) {
 778     select_all_on_gesture_tap_ = true;
 779
 780     // If we're trying to select all on tap, invalidate any saved selection lest
 781     // restoring it fights with the "select all" action.
 782     saved_selection_for_focus_change_ = gfx::Range::InvalidRange();
 783   }
 784
 785   if (select_all_on_gesture_tap_ && event->type() == ui::ET_GESTURE_TAP)
 786     SelectAll(false);
 787
 788   if (event->type() == ui::ET_GESTURE_TAP ||
 789       event->type() == ui::ET_GESTURE_TAP_CANCEL ||
 790       event->type() == ui::ET_GESTURE_TWO_FINGER_TAP ||
 791       event->type() == ui::ET_GESTURE_SCROLL_BEGIN ||
 792       event->type() == ui::ET_GESTURE_PINCH_BEGIN ||
 793       event->type() == ui::ET_GESTURE_LONG_PRESS ||
 794       event->type() == ui::ET_GESTURE_LONG_TAP) {
 795     select_all_on_gesture_tap_ = false;
 796   }
 797
 798   views::Textfield::OnGestureEvent(event);
 799 }
 800
 801 void OmniboxViewViews::AboutToRequestFocusFromTabTraversal(bool reverse) {
 802   views::Textfield::AboutToRequestFocusFromTabTraversal(reverse);
 803   // Tabbing into the omnibox should affect the origin chip in the same way
 804   // clicking it should.
 805   HandleOriginChipMouseRelease();
 806 }
 807
 808 bool OmniboxViewViews::SkipDefaultKeyEventProcessing(
 809     const ui::KeyEvent& event) {
 810   if (views::FocusManager::IsTabTraversalKeyEvent(event) &&
 811       ((model()->is_keyword_hint() && !event.IsShiftDown()) ||
 812        model()->popup_model()->IsOpen())) {
 813     return true;
 814   }
 815   return Textfield::SkipDefaultKeyEventProcessing(event);
 816 }
 817
 818 void OmniboxViewViews::GetAccessibleState(ui::AXViewState* state) {
 819   location_bar_view_->GetAccessibleState(state);
 820   state->role = ui::AX_ROLE_TEXT_FIELD;
 821 }
 822
 823 void OmniboxViewViews::OnFocus() {
 824   views::Textfield::OnFocus();
 825   // TODO(oshima): Get control key state.
 826   model()->OnSetFocus(false);
 827   // Don't call controller()->OnSetFocus, this view has already acquired focus.
 828
 829   // Restore the selection we saved in OnBlur() if it's still valid.
 830   if (saved_selection_for_focus_change_.IsValid()) {
 831     SelectRange(saved_selection_for_focus_change_);
 832     saved_selection_for_focus_change_ = gfx::Range::InvalidRange();
 833   }
 834 }
 835
 836 void OmniboxViewViews::OnBlur() {
 837   // Save the user's existing selection to restore it later.
 838   saved_selection_for_focus_change_ = GetSelectedRange();
 839
 840   views::Textfield::OnBlur();
 841   gfx::NativeView native_view = NULL;
 842   views::Widget* widget = GetWidget();
 843   if (widget) {
 844     aura::client::FocusClient* client =
 845         aura::client::GetFocusClient(widget->GetNativeView());
 846     if (client)
 847       native_view = client->GetFocusedWindow();
 848   }
 849   model()->OnWillKillFocus(native_view);
 850   // Close the popup.
 851   CloseOmniboxPopup();
 852
 853   // Tell the model to reset itself.
 854   model()->OnKillFocus();
 855
 856   // Ignore loss of focus if we lost focus because the website settings popup
 857   // is open. When the popup is destroyed, focus will return to the Omnibox.
 858   if (!WebsiteSettingsPopupView::IsPopupShowing())
 859     OnDidKillFocus();
 860
 861   // Make sure the beginning of the text is visible.
 862   SelectRange(gfx::Range(0));
 863 }
 864
 865 base::string16 OmniboxViewViews::GetSelectionClipboardText() const {
 866   return SanitizeTextForPaste(Textfield::GetSelectionClipboardText());
 867 }
 868
 869 ////////////////////////////////////////////////////////////////////////////////
 870 // OmniboxViewViews, private gfx::AnimationDelegate implementation:
 871
 872 void OmniboxViewViews::AnimationProgressed(const gfx::Animation* animation) {
 873   SchedulePaint();
 874 }
 875
 876 void OmniboxViewViews::AnimationEnded(const gfx::Animation* animation) {
 877   fade_in_animation_->Reset();
 878 }
 879
 880 ////////////////////////////////////////////////////////////////////////////////
 881 // OmniboxViewViews,
 882 // chromeos::input_method::InputMethodManager::CandidateWindowObserver
 883 // private implementation:
 884
 885 #if defined(OS_CHROMEOS)
 886 void OmniboxViewViews::CandidateWindowOpened(
 887       chromeos::input_method::InputMethodManager* manager) {
 888   ime_candidate_window_open_ = true;
 889 }
 890
 891 void OmniboxViewViews::CandidateWindowClosed(
 892       chromeos::input_method::InputMethodManager* manager) {
 893   ime_candidate_window_open_ = false;
 894 }
 895 #endif
 896
 897 ////////////////////////////////////////////////////////////////////////////////
 898 // OmniboxViewViews, private views::TextfieldController implementation:
 899
 900 void OmniboxViewViews::ContentsChanged(views::Textfield* sender,
 901                                        const base::string16& new_contents) {
 902 }
 903
 904 bool OmniboxViewViews::HandleKeyEvent(views::Textfield* textfield,
 905                                       const ui::KeyEvent& event) {
 906   delete_at_end_pressed_ = false;
 907
 908   if (event.key_code() == ui::VKEY_BACK) {
 909     // No extra handling is needed in keyword search mode, if there is a
 910     // non-empty selection, or if the cursor is not leading the text.
 911     if (model()->is_keyword_hint() || model()->keyword().empty() ||
 912         HasSelection() || GetCursorPosition() != 0)
 913       return false;
 914     model()->ClearKeyword(text());
 915     return true;
 916   }
 917
 918   if (event.key_code() == ui::VKEY_DELETE && !event.IsAltDown()) {
 919     delete_at_end_pressed_ =
 920         (!HasSelection() && GetCursorPosition() == text().length());
 921   }
 922
 923   // Handle the right-arrow key for LTR text and the left-arrow key for RTL text
 924   // if there is gray text that needs to be committed.
 925   if (GetCursorPosition() == text().length()) {
 926     base::i18n::TextDirection direction = GetTextDirection();
 927     if ((direction == base::i18n::LEFT_TO_RIGHT &&
 928          event.key_code() == ui::VKEY_RIGHT) ||
 929         (direction == base::i18n::RIGHT_TO_LEFT &&
 930          event.key_code() == ui::VKEY_LEFT)) {
 931       return model()->CommitSuggestedText();
 932     }
 933   }
 934
 935   return false;
 936 }
 937
 938 void OmniboxViewViews::OnBeforeUserAction(views::Textfield* sender) {
 939   OnBeforePossibleChange();
 940 }
 941
 942 void OmniboxViewViews::OnAfterUserAction(views::Textfield* sender) {
 943   OnAfterPossibleChange();
 944 }
 945
 946 void OmniboxViewViews::OnAfterCutOrCopy(ui::ClipboardType clipboard_type) {
 947   ui::Clipboard* cb = ui::Clipboard::GetForCurrentThread();
 948   base::string16 selected_text;
 949   cb->ReadText(clipboard_type, &selected_text);
 950   GURL url;
 951   bool write_url;
 952   model()->AdjustTextForCopy(GetSelectedRange().GetMin(), IsSelectAll(),
 953                              &selected_text, &url, &write_url);
 954   if (IsSelectAll())
 955     UMA_HISTOGRAM_COUNTS(OmniboxEditModel::kCutOrCopyAllTextHistogram, 1);
 956
 957   if (write_url) {
 958     BookmarkNodeData data;
 959     data.ReadFromTuple(url, selected_text);
 960     data.WriteToClipboard(clipboard_type);
 961   } else {
 962     ui::ScopedClipboardWriter scoped_clipboard_writer(
 963         ui::Clipboard::GetForCurrentThread(), clipboard_type);
 964     scoped_clipboard_writer.WriteText(selected_text);
 965   }
 966 }
 967
 968 void OmniboxViewViews::OnWriteDragData(ui::OSExchangeData* data) {
 969   GURL url;
 970   bool write_url;
 971   bool is_all_selected = IsSelectAll();
 972   base::string16 selected_text = GetSelectedText();
 973   model()->AdjustTextForCopy(GetSelectedRange().GetMin(), is_all_selected,
 974                              &selected_text, &url, &write_url);
 975   data->SetString(selected_text);
 976   if (write_url) {
 977     gfx::Image favicon;
 978     base::string16 title = selected_text;
 979     if (is_all_selected)
 980       model()->GetDataForURLExport(&url, &title, &favicon);
 981     button_drag_utils::SetURLAndDragImage(url, title, favicon.AsImageSkia(),
 982                                           data, GetWidget());
 983     data->SetURL(url, title);
 984   }
 985 }
 986
 987 void OmniboxViewViews::OnGetDragOperationsForTextfield(int* drag_operations) {
 988   base::string16 selected_text = GetSelectedText();
 989   GURL url;
 990   bool write_url;
 991   model()->AdjustTextForCopy(GetSelectedRange().GetMin(), IsSelectAll(),
 992                              &selected_text, &url, &write_url);
 993   if (write_url)
 994     *drag_operations |= ui::DragDropTypes::DRAG_LINK;
 995 }
 996
 997 void OmniboxViewViews::AppendDropFormats(
 998     int* formats,
 999     std::set<ui::OSExchangeData::CustomFormat>* custom_formats) {
1000   *formats = *formats | ui::OSExchangeData::URL;
1001 }
1002
1003 int OmniboxViewViews::OnDrop(const ui::OSExchangeData& data) {
1004   if (HasTextBeingDragged())
1005     return ui::DragDropTypes::DRAG_NONE;
1006
1007   if (data.HasURL(ui::OSExchangeData::CONVERT_FILENAMES)) {
1008     GURL url;
1009     base::string16 title;
1010     if (data.GetURLAndTitle(
1011             ui::OSExchangeData::CONVERT_FILENAMES, &url, &title)) {
1012       base::string16 text(
1013           StripJavascriptSchemas(base::UTF8ToUTF16(url.spec())));
1014       if (model()->CanPasteAndGo(text)) {
1015         model()->PasteAndGo(text);
1016         return ui::DragDropTypes::DRAG_COPY;
1017       }
1018     }
1019   } else if (data.HasString()) {
1020     base::string16 text;
1021     if (data.GetString(&text)) {
1022       base::string16 collapsed_text(base::CollapseWhitespace(text, true));
1023       if (model()->CanPasteAndGo(collapsed_text))
1024         model()->PasteAndGo(collapsed_text);
1025       return ui::DragDropTypes::DRAG_COPY;
1026     }
1027   }
1028
1029   return ui::DragDropTypes::DRAG_NONE;
1030 }
1031
1032 void OmniboxViewViews::UpdateContextMenu(ui::SimpleMenuModel* menu_contents) {
1033   int paste_position = menu_contents->GetIndexOfCommandId(IDS_APP_PASTE);
1034   DCHECK_GE(paste_position, 0);
1035   menu_contents->InsertItemWithStringIdAt(
1036       paste_position + 1, IDS_PASTE_AND_GO, IDS_PASTE_AND_GO);
1037
1038   menu_contents->AddSeparator(ui::NORMAL_SEPARATOR);
1039
1040   if (chrome::IsQueryExtractionEnabled() || chrome::ShouldDisplayOriginChip() ||
1041       chrome::ShouldDisplayOriginChipV2()) {
1042     int select_all_position = menu_contents->GetIndexOfCommandId(
1043         IDS_APP_SELECT_ALL);
1044     DCHECK_GE(select_all_position, 0);
1045     menu_contents->InsertItemWithStringIdAt(
1046         select_all_position + 1, IDS_SHOW_URL, IDS_SHOW_URL);
1047   }
1048
1049   // Minor note: We use IDC_ for command id here while the underlying textfield
1050   // is using IDS_ for all its command ids. This is because views cannot depend
1051   // on IDC_ for now.
1052   menu_contents->AddItemWithStringId(IDC_EDIT_SEARCH_ENGINES,
1053       IDS_EDIT_SEARCH_ENGINES);
1054 }