omnibox_view_views.cc revision 8bcbed890bc3ce4d7a057a8f32cab53fa534672e 
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/strings/string_util.h"
10#include "base/strings/utf_string_conversions.h"
11#include "chrome/app/chrome_command_ids.h"
12#include "chrome/browser/autocomplete/autocomplete_input.h"
13#include "chrome/browser/autocomplete/autocomplete_match.h"
14#include "chrome/browser/bookmarks/bookmark_node_data.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/common/chrome_switches.h"
24#include "content/public/browser/web_contents.h"
25#include "extensions/common/constants.h"
26#include "grit/app_locale_settings.h"
27#include "grit/generated_resources.h"
28#include "grit/ui_strings.h"
29#include "net/base/escape.h"
30#include "third_party/skia/include/core/SkColor.h"
31#include "ui/base/accessibility/accessible_view_state.h"
32#include "ui/base/clipboard/scoped_clipboard_writer.h"
33#include "ui/base/dragdrop/drag_drop_types.h"
34#include "ui/base/dragdrop/os_exchange_data.h"
35#include "ui/base/ime/text_input_client.h"
36#include "ui/base/ime/text_input_type.h"
37#include "ui/base/l10n/l10n_util.h"
38#include "ui/base/models/simple_menu_model.h"
39#include "ui/base/resource/resource_bundle.h"
40#include "ui/events/event.h"
41#include "ui/gfx/canvas.h"
42#include "ui/gfx/font_list.h"
43#include "ui/gfx/selection_model.h"
44#include "ui/views/border.h"
45#include "ui/views/button_drag_utils.h"
46#include "ui/views/controls/textfield/textfield.h"
47#include "ui/views/ime/input_method.h"
48#include "ui/views/layout/fill_layout.h"
49#include "ui/views/views_delegate.h"
50#include "ui/views/widget/widget.h"
51#include "url/gurl.h"
52
53#if defined(OS_WIN)
54#include "chrome/browser/browser_process.h"
55#endif
56
57#if defined(USE_AURA)
58#include "ui/aura/client/focus_client.h"
59#include "ui/aura/root_window.h"
60#include "ui/compositor/layer.h"
61#endif
62
63namespace {
64
65// Stores omnibox state for each tab.
66struct 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
85const char OmniboxState::kKey[] = "OmniboxState";
86
87OmniboxState::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
95OmniboxState::~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.
103ui::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
118bool IsOmniboxAutoCompletionForImeEnabled() {
119  return !CommandLine::ForCurrentProcess()->HasSwitch(
120      switches::kDisableOmniboxAutoCompletionForIme);
121}
122
123}  // namespace
124
125// static
126const char OmniboxViewViews::kViewClassName[] = "OmniboxViewViews";
127
128OmniboxViewViews::OmniboxViewViews(OmniboxEditController* controller,
129                                   Profile* profile,
130                                   CommandUpdater* command_updater,
131                                   bool popup_window_mode,
132                                   LocationBarView* location_bar,
133                                   const gfx::FontList& font_list,
134                                   int font_y_offset)
135    : OmniboxView(profile, controller, command_updater),
136      popup_window_mode_(popup_window_mode),
137      security_level_(ToolbarModel::NONE),
138      saved_selection_for_focus_change_(gfx::Range::InvalidRange()),
139      ime_composing_before_change_(false),
140      delete_at_end_pressed_(false),
141      location_bar_view_(location_bar),
142      ime_candidate_window_open_(false),
143      select_all_on_mouse_release_(false),
144      select_all_on_gesture_tap_(false) {
145  RemoveBorder();
146  set_id(VIEW_ID_OMNIBOX);
147  SetFontList(font_list);
148  SetVerticalMargins(font_y_offset, 0);
149  SetVerticalAlignment(gfx::ALIGN_TOP);
150}
151
152OmniboxViewViews::~OmniboxViewViews() {
153#if defined(OS_CHROMEOS)
154  chromeos::input_method::InputMethodManager::Get()->
155      RemoveCandidateWindowObserver(this);
156#endif
157
158  // Explicitly teardown members which have a reference to us.  Just to be safe
159  // we want them to be destroyed before destroying any other internal state.
160  popup_view_.reset();
161}
162
163////////////////////////////////////////////////////////////////////////////////
164// OmniboxViewViews public:
165
166void OmniboxViewViews::Init() {
167  SetController(this);
168  SetTextInputType(DetermineTextInputType());
169  SetBackgroundColor(location_bar_view_->GetColor(
170      ToolbarModel::NONE, LocationBarView::BACKGROUND));
171
172  if (popup_window_mode_)
173    SetReadOnly(true);
174
175  // Initialize the popup view using the same font.
176  popup_view_.reset(OmniboxPopupContentsView::Create(
177      font_list(), this, model(), location_bar_view_));
178
179#if defined(OS_CHROMEOS)
180  chromeos::input_method::InputMethodManager::Get()->
181      AddCandidateWindowObserver(this);
182#endif
183}
184
185////////////////////////////////////////////////////////////////////////////////
186// OmniboxViewViews, views::Textfield implementation:
187
188const char* OmniboxViewViews::GetClassName() const {
189  return kViewClassName;
190}
191
192void OmniboxViewViews::OnGestureEvent(ui::GestureEvent* event) {
193  views::Textfield::OnGestureEvent(event);
194  if (!HasFocus() && event->type() == ui::ET_GESTURE_TAP_DOWN) {
195    select_all_on_gesture_tap_ = true;
196
197    // If we're trying to select all on tap, invalidate any saved selection lest
198    // restoring it fights with the "select all" action.
199    saved_selection_for_focus_change_ = gfx::Range::InvalidRange();
200    return;
201  }
202  if (select_all_on_gesture_tap_ && event->type() == ui::ET_GESTURE_TAP)
203    SelectAll(false);
204  select_all_on_gesture_tap_ = false;
205}
206
207void OmniboxViewViews::GetAccessibleState(ui::AccessibleViewState* state) {
208  location_bar_view_->GetAccessibleState(state);
209  state->role = ui::AccessibilityTypes::ROLE_TEXT;
210}
211
212bool OmniboxViewViews::OnMousePressed(const ui::MouseEvent& event) {
213  select_all_on_mouse_release_ =
214      (event.IsOnlyLeftMouseButton() || event.IsOnlyRightMouseButton()) &&
215      (!HasFocus() || (model()->focus_state() == OMNIBOX_FOCUS_INVISIBLE));
216  if (select_all_on_mouse_release_) {
217    // Restore caret visibility whenever the user clicks in the omnibox in a way
218    // that would give it focus.  We must handle this case separately here
219    // because if the omnibox currently has invisible focus, the mouse event
220    // won't trigger either SetFocus() or OmniboxEditModel::OnSetFocus().
221    model()->SetCaretVisibility(true);
222
223    // When we're going to select all on mouse release, invalidate any saved
224    // selection lest restoring it fights with the "select all" action.  It's
225    // possible to later set select_all_on_mouse_release_ back to false, but
226    // that happens for things like dragging, which are cases where having
227    // invalidated this saved selection is still OK.
228    saved_selection_for_focus_change_ = gfx::Range::InvalidRange();
229  }
230  return views::Textfield::OnMousePressed(event);
231}
232
233bool OmniboxViewViews::OnMouseDragged(const ui::MouseEvent& event) {
234  select_all_on_mouse_release_ = false;
235  return views::Textfield::OnMouseDragged(event);
236}
237
238void OmniboxViewViews::OnMouseReleased(const ui::MouseEvent& event) {
239  views::Textfield::OnMouseReleased(event);
240  // When the user has clicked and released to give us focus, select all unless
241  // we're doing search term replacement (in which case refining the existing
242  // query is common enough that we do click-to-place-cursor).
243  if ((event.IsOnlyLeftMouseButton() || event.IsOnlyRightMouseButton()) &&
244      select_all_on_mouse_release_ &&
245      !controller()->GetToolbarModel()->WouldPerformSearchTermReplacement(
246          false)) {
247    // Select all in the reverse direction so as not to scroll the caret
248    // into view and shift the contents jarringly.
249    SelectAll(true);
250  }
251  select_all_on_mouse_release_ = false;
252}
253
254bool OmniboxViewViews::OnKeyPressed(const ui::KeyEvent& event) {
255  // Skip processing of [Alt]+<num-pad digit> Unicode alt key codes.
256  // Otherwise, if num-lock is off, the events are handled as [Up], [Down], etc.
257  if (event.IsUnicodeKeyCode())
258    return views::Textfield::OnKeyPressed(event);
259
260  const bool shift = event.IsShiftDown();
261  const bool control = event.IsControlDown();
262  const bool alt = event.IsAltDown() || event.IsAltGrDown();
263  switch (event.key_code()) {
264    case ui::VKEY_RETURN:
265      model()->AcceptInput(alt ? NEW_FOREGROUND_TAB : CURRENT_TAB, false);
266      return true;
267    case ui::VKEY_ESCAPE:
268      return model()->OnEscapeKeyPressed();
269    case ui::VKEY_CONTROL:
270      model()->OnControlKeyChanged(true);
271      break;
272    case ui::VKEY_DELETE:
273      if (shift && model()->popup_model()->IsOpen())
274        model()->popup_model()->TryDeletingCurrentItem();
275      break;
276    case ui::VKEY_UP:
277      model()->OnUpOrDownKeyPressed(-1);
278      return true;
279    case ui::VKEY_DOWN:
280      model()->OnUpOrDownKeyPressed(1);
281      return true;
282    case ui::VKEY_PRIOR:
283      if (control || alt || shift)
284        return false;
285      model()->OnUpOrDownKeyPressed(-1 * model()->result().size());
286      return true;
287    case ui::VKEY_NEXT:
288      if (control || alt || shift)
289        return false;
290      model()->OnUpOrDownKeyPressed(model()->result().size());
291      return true;
292    case ui::VKEY_V:
293      if (control && !alt && !read_only()) {
294        OnBeforePossibleChange();
295        OnPaste();
296        OnAfterPossibleChange();
297        return true;
298      }
299      break;
300    default:
301      break;
302  }
303
304  return views::Textfield::OnKeyPressed(event) || HandleEarlyTabActions(event);
305}
306
307bool OmniboxViewViews::OnKeyReleased(const ui::KeyEvent& event) {
308  // The omnibox contents may change while the control key is pressed.
309  if (event.key_code() == ui::VKEY_CONTROL)
310    model()->OnControlKeyChanged(false);
311  return views::Textfield::OnKeyReleased(event);
312}
313
314bool OmniboxViewViews::SkipDefaultKeyEventProcessing(
315    const ui::KeyEvent& event) {
316  if (views::FocusManager::IsTabTraversalKeyEvent(event) &&
317      ((model()->is_keyword_hint() && !event.IsShiftDown()) ||
318       model()->popup_model()->IsOpen())) {
319    return true;
320  }
321  return Textfield::SkipDefaultKeyEventProcessing(event);
322}
323
324bool OmniboxViewViews::HandleEarlyTabActions(const ui::KeyEvent& event) {
325  // This must run before acclerator handling invokes a focus change on tab.
326  // Note the parallel with SkipDefaultKeyEventProcessing above.
327  if (views::FocusManager::IsTabTraversalKeyEvent(event)) {
328    if (model()->is_keyword_hint() && !event.IsShiftDown()) {
329      model()->AcceptKeyword(ENTERED_KEYWORD_MODE_VIA_TAB);
330      return true;
331    }
332    if (model()->popup_model()->IsOpen()) {
333      if (event.IsShiftDown() &&
334          model()->popup_model()->selected_line_state() ==
335              OmniboxPopupModel::KEYWORD) {
336        model()->ClearKeyword(text());
337      } else {
338        model()->OnUpOrDownKeyPressed(event.IsShiftDown() ? -1 : 1);
339      }
340      return true;
341    }
342  }
343
344  return false;
345}
346
347void OmniboxViewViews::OnFocus() {
348  views::Textfield::OnFocus();
349  // TODO(oshima): Get control key state.
350  model()->OnSetFocus(false);
351  // Don't call controller()->OnSetFocus, this view has already acquired focus.
352
353  // Restore the selection we saved in OnBlur() if it's still valid.
354  if (saved_selection_for_focus_change_.IsValid()) {
355    SelectRange(saved_selection_for_focus_change_);
356    saved_selection_for_focus_change_ = gfx::Range::InvalidRange();
357  }
358}
359
360void OmniboxViewViews::OnBlur() {
361  // Save the user's existing selection to restore it later.
362  saved_selection_for_focus_change_ = GetSelectedRange();
363
364  views::Textfield::OnBlur();
365  gfx::NativeView native_view = NULL;
366#if defined(USE_AURA)
367  views::Widget* widget = GetWidget();
368  if (widget) {
369    aura::client::FocusClient* client =
370        aura::client::GetFocusClient(widget->GetNativeView());
371    if (client)
372      native_view = client->GetFocusedWindow();
373  }
374#endif
375  model()->OnWillKillFocus(native_view);
376  // Close the popup.
377  CloseOmniboxPopup();
378
379  // Tell the model to reset itself.
380  model()->OnKillFocus();
381
382  // Make sure the beginning of the text is visible.
383  SelectRange(gfx::Range(0));
384}
385
386////////////////////////////////////////////////////////////////////////////////
387// OmniboxViewViews, OmniboxView implementation:
388
389void OmniboxViewViews::SaveStateToTab(content::WebContents* tab) {
390  DCHECK(tab);
391
392  // We don't want to keep the IME status, so force quit the current
393  // session here.  It may affect the selection status, so order is
394  // also important.
395  if (IsIMEComposing()) {
396    GetTextInputClient()->ConfirmCompositionText();
397    GetInputMethod()->CancelComposition(this);
398  }
399
400  // NOTE: GetStateForTabSwitch() may affect GetSelectedRange(), so order is
401  // important.
402  OmniboxEditModel::State state = model()->GetStateForTabSwitch();
403  tab->SetUserData(OmniboxState::kKey, new OmniboxState(
404      state, GetSelectedRange(), saved_selection_for_focus_change_));
405}
406
407void OmniboxViewViews::OnTabChanged(const content::WebContents* web_contents) {
408  security_level_ = controller()->GetToolbarModel()->GetSecurityLevel(false);
409
410  const OmniboxState* state = static_cast<OmniboxState*>(
411      web_contents->GetUserData(&OmniboxState::kKey));
412  model()->RestoreState(state ? &state->model_state : NULL);
413  if (state) {
414    // This assumes that the omnibox has already been focused or blurred as
415    // appropriate; otherwise, a subsequent OnFocus() or OnBlur() call could
416    // goof up the selection.  See comments at the end of
417    // BrowserView::ActiveTabChanged().
418    SelectRange(state->selection);
419    saved_selection_for_focus_change_ = state->saved_selection_for_focus_change;
420  }
421
422  // TODO(msw|oshima): Consider saving/restoring edit history.
423  ClearEditHistory();
424}
425
426void OmniboxViewViews::Update() {
427  const ToolbarModel::SecurityLevel old_security_level = security_level_;
428  security_level_ = controller()->GetToolbarModel()->GetSecurityLevel(false);
429  if (model()->UpdatePermanentText()) {
430    // Something visibly changed.  Re-enable search term replacement.
431    controller()->GetToolbarModel()->set_search_term_replacement_enabled(true);
432    model()->UpdatePermanentText();
433
434    // Tweak: if the user had all the text selected, select all the new text.
435    // This makes one particular case better: the user clicks in the box to
436    // change it right before the permanent URL is changed.  Since the new URL
437    // is still fully selected, the user's typing will replace the edit contents
438    // as they'd intended.
439    const gfx::Range range(GetSelectedRange());
440    const bool was_select_all = (range.length() == text().length());
441
442    RevertAll();
443
444    // Only select all when we have focus.  If we don't have focus, selecting
445    // all is unnecessary since the selection will change on regaining focus,
446    // and can in fact cause artifacts, e.g. if the user is on the NTP and
447    // clicks a link to navigate, causing |was_select_all| to be vacuously true
448    // for the empty omnibox, and we then select all here, leading to the
449    // trailing portion of a long URL being scrolled into view.  We could try
450    // and address cases like this, but it seems better to just not muck with
451    // things when the omnibox isn't focused to begin with.
452    if (was_select_all && model()->has_focus())
453      SelectAll(range.is_reversed());
454  } else if (old_security_level != security_level_) {
455    EmphasizeURLComponents();
456  }
457}
458
459string16 OmniboxViewViews::GetText() const {
460  // TODO(oshima): IME support
461  return text();
462}
463
464void OmniboxViewViews::SetUserText(const string16& text,
465                                   const string16& display_text,
466                                   bool update_popup) {
467  saved_selection_for_focus_change_ = gfx::Range::InvalidRange();
468  OmniboxView::SetUserText(text, display_text, update_popup);
469}
470
471void OmniboxViewViews::SetWindowTextAndCaretPos(const string16& text,
472                                                size_t caret_pos,
473                                                bool update_popup,
474                                                bool notify_text_changed) {
475  const gfx::Range range(caret_pos, caret_pos);
476  SetTextAndSelectedRange(text, range);
477
478  if (update_popup)
479    UpdatePopup();
480
481  if (notify_text_changed)
482    TextChanged();
483}
484
485void OmniboxViewViews::SetForcedQuery() {
486  const string16 current_text(text());
487  const size_t start = current_text.find_first_not_of(kWhitespaceUTF16);
488  if (start == string16::npos || (current_text[start] != '?'))
489    OmniboxView::SetUserText(ASCIIToUTF16("?"));
490  else
491    SelectRange(gfx::Range(current_text.size(), start + 1));
492}
493
494bool OmniboxViewViews::IsSelectAll() const {
495  // TODO(oshima): IME support.
496  return text() == GetSelectedText();
497}
498
499bool OmniboxViewViews::DeleteAtEndPressed() {
500  return delete_at_end_pressed_;
501}
502
503void OmniboxViewViews::GetSelectionBounds(string16::size_type* start,
504                                          string16::size_type* end) const {
505  const gfx::Range range = GetSelectedRange();
506  *start = static_cast<size_t>(range.start());
507  *end = static_cast<size_t>(range.end());
508}
509
510void OmniboxViewViews::SelectAll(bool reversed) {
511  views::Textfield::SelectAll(reversed);
512}
513
514void OmniboxViewViews::RevertAll() {
515  saved_selection_for_focus_change_ = gfx::Range::InvalidRange();
516  OmniboxView::RevertAll();
517}
518
519void OmniboxViewViews::UpdatePopup() {
520  model()->SetInputInProgress(true);
521  if (!model()->has_focus())
522    return;
523
524  // Hide the inline autocompletion for IME users.
525  location_bar_view_->SetImeInlineAutocompletion(string16());
526
527  // Prevent inline autocomplete when the caret isn't at the end of the text,
528  // and during IME composition editing unless
529  // |kEnableOmniboxAutoCompletionForIme| is enabled.
530  const gfx::Range sel = GetSelectedRange();
531  model()->StartAutocomplete(
532      !sel.is_empty(),
533      sel.GetMax() < text().length() ||
534      (IsIMEComposing() && !IsOmniboxAutoCompletionForImeEnabled()));
535}
536
537void OmniboxViewViews::SetFocus() {
538  RequestFocus();
539  // Restore caret visibility if focus is explicitly requested. This is
540  // necessary because if we already have invisible focus, the RequestFocus()
541  // call above will short-circuit, preventing us from reaching
542  // OmniboxEditModel::OnSetFocus(), which handles restoring visibility when the
543  // omnibox regains focus after losing focus.
544  model()->SetCaretVisibility(true);
545}
546
547void OmniboxViewViews::ApplyCaretVisibility() {
548  SetCursorEnabled(model()->is_caret_visible());
549}
550
551void OmniboxViewViews::OnTemporaryTextMaybeChanged(
552    const string16& display_text,
553    bool save_original_selection,
554    bool notify_text_changed) {
555  if (save_original_selection)
556    saved_temporary_selection_ = GetSelectedRange();
557
558  SetWindowTextAndCaretPos(display_text, display_text.length(), false,
559                           notify_text_changed);
560}
561
562bool OmniboxViewViews::OnInlineAutocompleteTextMaybeChanged(
563    const string16& display_text,
564    size_t user_text_length) {
565  if (display_text == text())
566    return false;
567
568  if (IsIMEComposing()) {
569    location_bar_view_->SetImeInlineAutocompletion(
570        display_text.substr(user_text_length));
571  } else {
572    gfx::Range range(display_text.size(), user_text_length);
573    SetTextAndSelectedRange(display_text, range);
574  }
575  TextChanged();
576  return true;
577}
578
579void OmniboxViewViews::OnRevertTemporaryText() {
580  SelectRange(saved_temporary_selection_);
581  // We got here because the user hit the Escape key. We explicitly don't call
582  // TextChanged(), since OmniboxPopupModel::ResetToDefaultMatch() has already
583  // been called by now, and it would've called TextChanged() if it was
584  // warranted.
585}
586
587void OmniboxViewViews::OnBeforePossibleChange() {
588  // Record our state.
589  text_before_change_ = text();
590  sel_before_change_ = GetSelectedRange();
591  ime_composing_before_change_ = IsIMEComposing();
592}
593
594bool OmniboxViewViews::OnAfterPossibleChange() {
595  // See if the text or selection have changed since OnBeforePossibleChange().
596  const string16 new_text = text();
597  const gfx::Range new_sel = GetSelectedRange();
598  const bool text_changed = (new_text != text_before_change_) ||
599      (ime_composing_before_change_ != IsIMEComposing());
600  const bool selection_differs =
601      !((sel_before_change_.is_empty() && new_sel.is_empty()) ||
602        sel_before_change_.EqualsIgnoringDirection(new_sel));
603
604  // When the user has deleted text, we don't allow inline autocomplete.  Make
605  // sure to not flag cases like selecting part of the text and then pasting
606  // (or typing) the prefix of that selection.  (We detect these by making
607  // sure the caret, which should be after any insertion, hasn't moved
608  // forward of the old selection start.)
609  const bool just_deleted_text =
610      (text_before_change_.length() > new_text.length()) &&
611      (new_sel.start() <= sel_before_change_.GetMin());
612
613  const bool something_changed = model()->OnAfterPossibleChange(
614      text_before_change_, new_text, new_sel.start(), new_sel.end(),
615      selection_differs, text_changed, just_deleted_text, !IsIMEComposing());
616
617  // If only selection was changed, we don't need to call model()'s
618  // OnChanged() method, which is called in TextChanged().
619  // But we still need to call EmphasizeURLComponents() to make sure the text
620  // attributes are updated correctly.
621  if (something_changed && text_changed)
622    TextChanged();
623  else if (selection_differs)
624    EmphasizeURLComponents();
625  else if (delete_at_end_pressed_)
626    model()->OnChanged();
627
628  return something_changed;
629}
630
631gfx::NativeView OmniboxViewViews::GetNativeView() const {
632  return GetWidget()->GetNativeView();
633}
634
635gfx::NativeView OmniboxViewViews::GetRelativeWindowForPopup() const {
636  return GetWidget()->GetTopLevelWidget()->GetNativeView();
637}
638
639void OmniboxViewViews::SetGrayTextAutocompletion(const string16& input) {
640#if defined(OS_WIN) || defined(USE_AURA)
641  location_bar_view_->SetGrayTextAutocompletion(input);
642#endif
643}
644
645string16 OmniboxViewViews::GetGrayTextAutocompletion() const {
646#if defined(OS_WIN) || defined(USE_AURA)
647  return location_bar_view_->GetGrayTextAutocompletion();
648#else
649  return string16();
650#endif
651}
652
653int OmniboxViewViews::TextWidth() const {
654  return native_wrapper_->GetWidthNeededForText();
655}
656
657bool OmniboxViewViews::IsImeComposing() const {
658  return IsIMEComposing();
659}
660
661bool OmniboxViewViews::IsImeShowingPopup() const {
662#if defined(OS_CHROMEOS)
663  return ime_candidate_window_open_;
664#else
665  const views::InputMethod* input_method = this->GetInputMethod();
666  return input_method && input_method->IsCandidatePopupOpen();
667#endif
668}
669
670int OmniboxViewViews::GetMaxEditWidth(int entry_width) const {
671  return entry_width;
672}
673
674views::View* OmniboxViewViews::AddToView(views::View* parent) {
675  parent->AddChildView(this);
676  return this;
677}
678
679int OmniboxViewViews::OnPerformDrop(const ui::DropTargetEvent& event) {
680  NOTIMPLEMENTED();
681  return ui::DragDropTypes::DRAG_NONE;
682}
683
684////////////////////////////////////////////////////////////////////////////////
685// OmniboxViewViews, views::TextfieldController implementation:
686
687void OmniboxViewViews::ContentsChanged(views::Textfield* sender,
688                                       const string16& new_contents) {
689}
690
691bool OmniboxViewViews::HandleKeyEvent(views::Textfield* textfield,
692                                      const ui::KeyEvent& event) {
693  delete_at_end_pressed_ = false;
694
695  if (event.key_code() == ui::VKEY_BACK) {
696    // No extra handling is needed in keyword search mode, if there is a
697    // non-empty selection, or if the cursor is not leading the text.
698    if (model()->is_keyword_hint() || model()->keyword().empty() ||
699        HasSelection() || GetCursorPosition() != 0)
700      return false;
701    model()->ClearKeyword(text());
702    return true;
703  }
704
705  if (event.key_code() == ui::VKEY_DELETE && !event.IsAltDown()) {
706    delete_at_end_pressed_ =
707        (!HasSelection() && GetCursorPosition() == text().length());
708  }
709
710  // Handle the right-arrow key for LTR text and the left-arrow key for RTL text
711  // if there is gray text that needs to be committed.
712  if (GetCursorPosition() == text().length()) {
713    base::i18n::TextDirection direction = GetTextDirection();
714    if ((direction == base::i18n::LEFT_TO_RIGHT &&
715         event.key_code() == ui::VKEY_RIGHT) ||
716        (direction == base::i18n::RIGHT_TO_LEFT &&
717         event.key_code() == ui::VKEY_LEFT)) {
718      return model()->CommitSuggestedText();
719    }
720  }
721
722  return false;
723}
724
725void OmniboxViewViews::OnBeforeUserAction(views::Textfield* sender) {
726  OnBeforePossibleChange();
727}
728
729void OmniboxViewViews::OnAfterUserAction(views::Textfield* sender) {
730  OnAfterPossibleChange();
731}
732
733void OmniboxViewViews::OnAfterCutOrCopy() {
734  ui::Clipboard* cb = ui::Clipboard::GetForCurrentThread();
735  string16 selected_text;
736  cb->ReadText(ui::CLIPBOARD_TYPE_COPY_PASTE, &selected_text);
737  GURL url;
738  bool write_url;
739  model()->AdjustTextForCopy(GetSelectedRange().GetMin(), IsSelectAll(),
740                             &selected_text, &url, &write_url);
741  if (write_url) {
742    BookmarkNodeData data;
743    data.ReadFromTuple(url, selected_text);
744    data.WriteToClipboard(ui::CLIPBOARD_TYPE_COPY_PASTE);
745  } else {
746    ui::ScopedClipboardWriter scoped_clipboard_writer(
747        ui::Clipboard::GetForCurrentThread(), ui::CLIPBOARD_TYPE_COPY_PASTE);
748    scoped_clipboard_writer.WriteText(selected_text);
749  }
750}
751
752void OmniboxViewViews::OnGetDragOperationsForTextfield(int* drag_operations) {
753  string16 selected_text = GetSelectedText();
754  GURL url;
755  bool write_url;
756  model()->AdjustTextForCopy(GetSelectedRange().GetMin(), IsSelectAll(),
757                             &selected_text, &url, &write_url);
758  if (write_url)
759    *drag_operations |= ui::DragDropTypes::DRAG_LINK;
760}
761
762void OmniboxViewViews::OnWriteDragData(ui::OSExchangeData* data) {
763  string16 selected_text = GetSelectedText();
764  GURL url;
765  bool write_url;
766  bool is_all_selected = IsSelectAll();
767  model()->AdjustTextForCopy(GetSelectedRange().GetMin(), is_all_selected,
768                             &selected_text, &url, &write_url);
769  data->SetString(selected_text);
770  if (write_url) {
771    gfx::Image favicon;
772    string16 title = selected_text;
773    if (is_all_selected)
774      model()->GetDataForURLExport(&url, &title, &favicon);
775    button_drag_utils::SetURLAndDragImage(url, title, favicon.AsImageSkia(),
776                                          data, GetWidget());
777    data->SetURL(url, title);
778  }
779}
780
781void OmniboxViewViews::AppendDropFormats(
782    int* formats,
783    std::set<ui::OSExchangeData::CustomFormat>* custom_formats) {
784  *formats = *formats | ui::OSExchangeData::URL;
785}
786
787int OmniboxViewViews::OnDrop(const ui::OSExchangeData& data) {
788  if (HasTextBeingDragged())
789    return ui::DragDropTypes::DRAG_NONE;
790
791  if (data.HasURL()) {
792    GURL url;
793    string16 title;
794    if (data.GetURLAndTitle(&url, &title)) {
795      string16 text(StripJavascriptSchemas(UTF8ToUTF16(url.spec())));
796      if (model()->CanPasteAndGo(text)) {
797        model()->PasteAndGo(text);
798        return ui::DragDropTypes::DRAG_COPY;
799      }
800    }
801  } else if (data.HasString()) {
802    string16 text;
803    if (data.GetString(&text)) {
804      string16 collapsed_text(CollapseWhitespace(text, true));
805      if (model()->CanPasteAndGo(collapsed_text))
806        model()->PasteAndGo(collapsed_text);
807      return ui::DragDropTypes::DRAG_COPY;
808    }
809  }
810
811  return ui::DragDropTypes::DRAG_NONE;
812}
813
814void OmniboxViewViews::UpdateContextMenu(ui::SimpleMenuModel* menu_contents) {
815  int paste_position = menu_contents->GetIndexOfCommandId(IDS_APP_PASTE);
816  DCHECK_GE(paste_position, 0);
817  menu_contents->InsertItemWithStringIdAt(
818      paste_position + 1, IDS_PASTE_AND_GO, IDS_PASTE_AND_GO);
819
820  menu_contents->AddSeparator(ui::NORMAL_SEPARATOR);
821
822  if (chrome::IsQueryExtractionEnabled()) {
823    int select_all_position = menu_contents->GetIndexOfCommandId(
824        IDS_APP_SELECT_ALL);
825    DCHECK_GE(select_all_position, 0);
826    menu_contents->InsertItemWithStringIdAt(
827        select_all_position + 1, IDS_SHOW_URL, IDS_SHOW_URL);
828  }
829
830  // Minor note: We use IDC_ for command id here while the underlying textfield
831  // is using IDS_ for all its command ids. This is because views cannot depend
832  // on IDC_ for now.
833  menu_contents->AddItemWithStringId(IDC_EDIT_SEARCH_ENGINES,
834      IDS_EDIT_SEARCH_ENGINES);
835}
836
837bool OmniboxViewViews::IsCommandIdEnabled(int command_id) const {
838  if (command_id == IDS_PASTE_AND_GO)
839    return model()->CanPasteAndGo(GetClipboardText());
840  if (command_id != IDS_SHOW_URL)
841    return command_updater()->IsCommandEnabled(command_id);
842  return controller()->GetToolbarModel()->WouldPerformSearchTermReplacement(
843      false);
844}
845
846bool OmniboxViewViews::IsItemForCommandIdDynamic(int command_id) const {
847  return command_id == IDS_PASTE_AND_GO;
848}
849
850string16 OmniboxViewViews::GetLabelForCommandId(int command_id) const {
851  DCHECK_EQ(IDS_PASTE_AND_GO, command_id);
852  return l10n_util::GetStringUTF16(
853      model()->IsPasteAndSearch(GetClipboardText()) ?
854          IDS_PASTE_AND_SEARCH : IDS_PASTE_AND_GO);
855}
856
857bool OmniboxViewViews::HandlesCommand(int command_id) const {
858  // See description in OnPaste() for details on why we need to handle paste.
859  return command_id == IDS_APP_PASTE;
860}
861
862void OmniboxViewViews::ExecuteCommand(int command_id, int event_flags) {
863  switch (command_id) {
864    // These commands don't invoke the popup via OnBefore/AfterPossibleChange().
865    case IDS_PASTE_AND_GO:
866      model()->PasteAndGo(GetClipboardText());
867      break;
868    case IDS_SHOW_URL:
869      ShowURL();
870      break;
871    case IDC_EDIT_SEARCH_ENGINES:
872      command_updater()->ExecuteCommand(command_id);
873      break;
874
875    default:
876      OnBeforePossibleChange();
877      if (command_id == IDS_APP_PASTE)
878        OnPaste();
879      else
880        command_updater()->ExecuteCommand(command_id);
881      OnAfterPossibleChange();
882      break;
883  }
884}
885
886#if defined(OS_CHROMEOS)
887void OmniboxViewViews::CandidateWindowOpened(
888      chromeos::input_method::InputMethodManager* manager) {
889  ime_candidate_window_open_ = true;
890}
891
892void OmniboxViewViews::CandidateWindowClosed(
893      chromeos::input_method::InputMethodManager* manager) {
894  ime_candidate_window_open_ = false;
895}
896#endif
897
898////////////////////////////////////////////////////////////////////////////////
899// OmniboxViewViews, private:
900
901int OmniboxViewViews::GetOmniboxTextLength() const {
902  // TODO(oshima): Support IME.
903  return static_cast<int>(text().length());
904}
905
906void OmniboxViewViews::EmphasizeURLComponents() {
907  // See whether the contents are a URL with a non-empty host portion, which we
908  // should emphasize.  To check for a URL, rather than using the type returned
909  // by Parse(), ask the model, which will check the desired page transition for
910  // this input.  This can tell us whether an UNKNOWN input string is going to
911  // be treated as a search or a navigation, and is the same method the Paste
912  // And Go system uses.
913  url_parse::Component scheme, host;
914  AutocompleteInput::ParseForEmphasizeComponents(text(), &scheme, &host);
915  bool grey_out_url = text().substr(scheme.begin, scheme.len) ==
916      UTF8ToUTF16(extensions::kExtensionScheme);
917  bool grey_base = model()->CurrentTextIsURL() &&
918      (host.is_nonempty() || grey_out_url);
919  SetColor(location_bar_view_->GetColor(
920      security_level_,
921      grey_base ? LocationBarView::DEEMPHASIZED_TEXT : LocationBarView::TEXT));
922  if (grey_base && !grey_out_url) {
923    ApplyColor(
924        location_bar_view_->GetColor(security_level_, LocationBarView::TEXT),
925        gfx::Range(host.begin, host.end()));
926  }
927
928  // Emphasize the scheme for security UI display purposes (if necessary).
929  // Note that we check CurrentTextIsURL() because if we're replacing search
930  // URLs with search terms, we may have a non-URL even when the user is not
931  // editing; and in some cases, e.g. for "site:foo.com" searches, the parser
932  // may have incorrectly identified a qualifier as a scheme.
933  SetStyle(gfx::DIAGONAL_STRIKE, false);
934  if (!model()->user_input_in_progress() && model()->CurrentTextIsURL() &&
935      scheme.is_nonempty() && (security_level_ != ToolbarModel::NONE)) {
936    SkColor security_color = location_bar_view_->GetColor(
937        security_level_, LocationBarView::SECURITY_TEXT);
938    const bool strike = (security_level_ == ToolbarModel::SECURITY_ERROR);
939    const gfx::Range scheme_range(scheme.begin, scheme.end());
940    ApplyColor(security_color, scheme_range);
941    ApplyStyle(gfx::DIAGONAL_STRIKE, strike, scheme_range);
942  }
943}
944
945void OmniboxViewViews::SetTextAndSelectedRange(const string16& text,
946                                               const gfx::Range& range) {
947  SetText(text);
948  SelectRange(range);
949}
950
951string16 OmniboxViewViews::GetSelectedText() const {
952  // TODO(oshima): Support IME.
953  return views::Textfield::GetSelectedText();
954}
955
956void OmniboxViewViews::OnPaste() {
957  const string16 text(GetClipboardText());
958  if (!text.empty()) {
959    // Record this paste, so we can do different behavior.
960    model()->on_paste();
961    // Force a Paste operation to trigger the text_changed code in
962    // OnAfterPossibleChange(), even if identical contents are pasted.
963    text_before_change_.clear();
964    InsertOrReplaceText(text);
965  }
966}
967