// Copyright 2012 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #include "chrome/browser/instant/instant_controller.h" #include "base/command_line.h" #include "base/metrics/histogram.h" #include "base/string_util.h" #include "base/stringprintf.h" #include "base/utf_string_conversions.h" #include "chrome/browser/autocomplete/autocomplete_provider.h" #include "chrome/browser/history/history_service.h" #include "chrome/browser/history/history_service_factory.h" #include "chrome/browser/history/history_tab_helper.h" #include "chrome/browser/history/top_sites.h" #include "chrome/browser/instant/instant_ntp.h" #include "chrome/browser/instant/instant_overlay.h" #include "chrome/browser/instant/instant_tab.h" #include "chrome/browser/platform_util.h" #include "chrome/browser/search_engines/template_url_service.h" #include "chrome/browser/search_engines/template_url_service_factory.h" #include "chrome/browser/ui/browser_instant_controller.h" #include "chrome/browser/ui/search/search.h" #include "chrome/browser/ui/search/search_tab_helper.h" #include "chrome/common/chrome_notification_types.h" #include "chrome/common/chrome_switches.h" #include "chrome/common/url_constants.h" #include "content/public/browser/navigation_entry.h" #include "content/public/browser/notification_service.h" #include "content/public/browser/render_widget_host_view.h" #include "content/public/browser/web_contents.h" #include "content/public/browser/web_contents_view.h" #include "net/base/escape.h" #include "third_party/icu/public/common/unicode/normalizer2.h" #if defined(TOOLKIT_VIEWS) #include "ui/views/widget/widget.h" #endif namespace { // An artificial delay (in milliseconds) we introduce before telling the Instant // page about the new omnibox bounds, in cases where the bounds shrink. This is // to avoid the page jumping up/down very fast in response to bounds changes. const int kUpdateBoundsDelayMS = 1000; // The maximum number of times we'll load a non-Instant-supporting search engine // before we give up and blacklist it for the rest of the browsing session. const int kMaxInstantSupportFailures = 10; // For reporting events of interest. enum InstantControllerEvent { INSTANT_CONTROLLER_EVENT_URL_ADDED_TO_BLACKLIST = 0, INSTANT_CONTROLLER_EVENT_URL_REMOVED_FROM_BLACKLIST = 1, INSTANT_CONTROLLER_EVENT_URL_BLOCKED_BY_BLACKLIST = 2, INSTANT_CONTROLLER_EVENT_MAX = 3, }; void RecordEventHistogram(InstantControllerEvent event) { UMA_HISTOGRAM_ENUMERATION("Instant.InstantControllerEvent", event, INSTANT_CONTROLLER_EVENT_MAX); } void AddSessionStorageHistogram(bool extended_enabled, const content::WebContents* tab1, const content::WebContents* tab2) { base::HistogramBase* histogram = base::BooleanHistogram::FactoryGet( std::string("Instant.SessionStorageNamespace") + (extended_enabled ? "_Extended" : "_Instant"), base::HistogramBase::kUmaTargetedHistogramFlag); const content::SessionStorageNamespaceMap& session_storage_map1 = tab1->GetController().GetSessionStorageNamespaceMap(); const content::SessionStorageNamespaceMap& session_storage_map2 = tab2->GetController().GetSessionStorageNamespaceMap(); bool is_session_storage_the_same = session_storage_map1.size() == session_storage_map2.size(); if (is_session_storage_the_same) { // The size is the same, so let's check that all entries match. for (content::SessionStorageNamespaceMap::const_iterator it1 = session_storage_map1.begin(), it2 = session_storage_map2.begin(); it1 != session_storage_map1.end() && it2 != session_storage_map2.end(); ++it1, ++it2) { if (it1->first != it2->first || it1->second != it2->second) { is_session_storage_the_same = false; break; } } } histogram->AddBoolean(is_session_storage_the_same); } string16 Normalize(const string16& str) { UErrorCode status = U_ZERO_ERROR; const icu::Normalizer2* normalizer = icu::Normalizer2::getInstance(NULL, "nfkc_cf", UNORM2_COMPOSE, status); if (normalizer == NULL || U_FAILURE(status)) return str; icu::UnicodeString norm_str(normalizer->normalize( icu::UnicodeString(FALSE, str.c_str(), str.size()), status)); if (U_FAILURE(status)) return str; return string16(norm_str.getBuffer(), norm_str.length()); } bool NormalizeAndStripPrefix(string16* text, const string16& prefix) { string16 norm_prefix = Normalize(prefix); string16 norm_text = Normalize(*text); if (norm_prefix.size() <= norm_text.size() && norm_text.compare(0, norm_prefix.size(), norm_prefix) == 0) { *text = norm_text.erase(0, norm_prefix.size()); return true; } return false; } // For TOOLKIT_VIEWS, the top level widget is always focused. If the focus // change originated in views determine the child Widget from the view that is // being focused. gfx::NativeView GetViewGainingFocus(gfx::NativeView view_gaining_focus) { #if defined(TOOLKIT_VIEWS) views::Widget* widget = view_gaining_focus ? views::Widget::GetWidgetForNativeView(view_gaining_focus) : NULL; if (widget) { views::FocusManager* focus_manager = widget->GetFocusManager(); if (focus_manager && focus_manager->is_changing_focus() && focus_manager->GetFocusedView() && focus_manager->GetFocusedView()->GetWidget()) return focus_manager->GetFocusedView()->GetWidget()->GetNativeView(); } #endif return view_gaining_focus; } // Returns true if |view| is the top-level contents view or a child view in the // view hierarchy of |contents|. bool IsViewInContents(gfx::NativeView view, content::WebContents* contents) { content::RenderWidgetHostView* rwhv = contents->GetRenderWidgetHostView(); if (!view || !rwhv) return false; gfx::NativeView tab_view = contents->GetView()->GetNativeView(); if (view == rwhv->GetNativeView() || view == tab_view) return true; // Walk up the view hierarchy to determine if the view is a subview of the // WebContents view (such as a windowed plugin or http auth dialog). while (view) { view = platform_util::GetParent(view); if (view == tab_view) return true; } return false; } bool IsFullHeight(const InstantModel& model) { return model.height() == 100 && model.height_units() == INSTANT_SIZE_PERCENT; } bool IsContentsFrom(const InstantPage* page, const content::WebContents* contents) { return page && (page->contents() == contents); } // Adds a transient NavigationEntry to the supplied |contents|'s // NavigationController if the page's URL has not already been updated with the // supplied |search_terms|. Sets the |search_terms| on the transient entry for // search terms extraction to work correctly. void EnsureSearchTermsAreSet(content::WebContents* contents, const string16& search_terms) { content::NavigationController& controller = contents->GetController(); // If search terms are already correct or there is already a transient entry // (there shouldn't be), bail out early. if (chrome::search::GetSearchTerms(contents) == search_terms || controller.GetTransientEntry()) return; content::NavigationEntry* transient = content::NavigationEntry::Create( *controller.GetActiveEntry()); transient->SetExtraData(chrome::search::kInstantExtendedSearchTermsKey, search_terms); controller.SetTransientEntry(transient); chrome::search::SearchTabHelper::FromWebContents(contents)-> NavigationEntryUpdated(); } } // namespace InstantController::InstantController(chrome::BrowserInstantController* browser, bool extended_enabled) : browser_(browser), extended_enabled_(extended_enabled), instant_enabled_(false), use_local_preview_only_(true), model_(ALLOW_THIS_IN_INITIALIZER_LIST(this)), last_omnibox_text_has_inline_autocompletion_(false), last_verbatim_(false), last_transition_type_(content::PAGE_TRANSITION_LINK), last_match_was_search_(false), omnibox_focus_state_(OMNIBOX_FOCUS_NONE), start_margin_(0), end_margin_(0), allow_preview_to_show_search_suggestions_(false), ALLOW_THIS_IN_INITIALIZER_LIST(weak_ptr_factory_(this)) { } InstantController::~InstantController() { } bool InstantController::Update(const AutocompleteMatch& match, const string16& user_text, const string16& full_text, size_t selection_start, size_t selection_end, bool verbatim, bool user_input_in_progress, bool omnibox_popup_is_open, bool escape_pressed, bool is_keyword_search) { if (!extended_enabled_ && !instant_enabled_) return false; LOG_INSTANT_DEBUG_EVENT(this, base::StringPrintf( "Update: %s user_text='%s' full_text='%s' selection_start=%d " "selection_end=%d verbatim=%d typing=%d popup=%d escape_pressed=%d " "is_keyword_search=%d", AutocompleteMatch::TypeToString(match.type).c_str(), UTF16ToUTF8(user_text).c_str(), UTF16ToUTF8(full_text).c_str(), static_cast(selection_start), static_cast(selection_end), verbatim, user_input_in_progress, omnibox_popup_is_open, escape_pressed, is_keyword_search)); // TODO(dhollowa): Complete keyword match UI. For now just hide suggestions. // http://crbug.com/153932. Note, this early escape is happens prior to the // DCHECKs below because |user_text| and |full_text| have different semantics // when keyword search is in effect. if (is_keyword_search) { if (instant_tab_) instant_tab_->Update(string16(), 0, 0, true); else HideOverlay(); last_match_was_search_ = false; return false; } // If the popup is open, the user has to be typing. DCHECK(!omnibox_popup_is_open || user_input_in_progress); // If the popup is closed, there should be no inline autocompletion. DCHECK(omnibox_popup_is_open || user_text.empty() || user_text == full_text) << user_text << "|" << full_text; // If there's no text in the omnibox, the user can't have typed any. DCHECK(!full_text.empty() || user_text.empty()) << user_text; // If the user isn't typing, and the popup is closed, there can't be any // user-typed text. DCHECK(user_input_in_progress || omnibox_popup_is_open || user_text.empty()) << user_text; // The preview is being clicked and will commit soon. Don't change anything. // TODO(sreeram): Add a browser test for this. if (overlay_ && overlay_->is_pointer_down_from_activate()) return false; // In non-extended mode, SearchModeChanged() is never called, so fake it. The // mode is set to "disallow suggestions" here, so that if one of the early // "return false" conditions is hit, suggestions will be disallowed. If the // query is sent to the overlay, the mode is set to "allow" further below. if (!extended_enabled_) search_mode_.mode = chrome::search::Mode::MODE_DEFAULT; last_match_was_search_ = AutocompleteMatch::IsSearchType(match.type) && !user_text.empty(); // In non extended mode, Instant is disabled for URLs and keyword mode. if (!extended_enabled_ && (!last_match_was_search_ || match.type == AutocompleteMatch::SEARCH_OTHER_ENGINE)) { HideOverlay(); return false; } // If we have an |instant_tab_| use it, else ensure we have a overlay that is // current or is using local preview. if (!instant_tab_ && !(overlay_ && overlay_->IsUsingLocalPreview()) && !EnsureOverlayIsCurrent(false)) { HideOverlay(); return false; } if (extended_enabled_) { if (!omnibox_popup_is_open) { if (!user_input_in_progress) { // If the user isn't typing and the omnibox popup is closed, it means a // regular navigation, tab-switch or the user hitting Escape. if (instant_tab_) { // The user is on a search results page. It may be showing results for // a partial query the user typed before they hit Escape. Send the // omnibox text to the page to restore the original results. // // In a tab switch, |instant_tab_| won't have updated yet, so it may // be pointing to the previous tab (which was a search results page). // Ensure we don't send the omnibox text to a random webpage (the new // tab), by comparing the old and new WebContents. if (escape_pressed && instant_tab_->contents() == browser_->GetActiveWebContents()) { instant_tab_->Submit(full_text); } } else if (!full_text.empty()) { // If |full_text| is empty, the user is on the NTP. The preview may // be showing custom NTP content; hide only if that's not the case. HideOverlay(); } } else if (full_text.empty()) { // The user is typing, and backspaced away all omnibox text. Clear // |last_omnibox_text_| so that we don't attempt to set suggestions. last_omnibox_text_.clear(); last_suggestion_ = InstantSuggestion(); if (instant_tab_) { // On a search results page, tell it to clear old results. instant_tab_->Update(string16(), 0, 0, true); } else if (search_mode_.is_origin_ntp()) { // On the NTP, tell the preview to clear old results. Don't hide the // preview so it can show a blank page or logo if it wants. overlay_->Update(string16(), 0, 0, true); } else { HideOverlay(); } } else { // The user switched to a tab with partial text already in the omnibox. HideOverlay(); // The new tab may or may not be a search results page; we don't know // since SearchModeChanged() hasn't been called yet. If it later turns // out to be, we should store |full_text| now, so that if the user hits // Enter, we'll send the correct query to instant_tab_->Submit(). If the // partial text is not a query (|last_match_was_search_| is false), we // won't Submit(), so no need to worry about that. last_omnibox_text_ = full_text; last_suggestion_ = InstantSuggestion(); } return false; } else if (full_text.empty()) { // The user typed a solitary "?". Same as the backspace case above. last_omnibox_text_.clear(); last_suggestion_ = InstantSuggestion(); if (instant_tab_) instant_tab_->Update(string16(), 0, 0, true); else if (search_mode_.is_origin_ntp()) overlay_->Update(string16(), 0, 0, true); else HideOverlay(); return false; } } else if (!omnibox_popup_is_open || full_text.empty()) { // In the non-extended case, hide the preview as long as the user isn't // actively typing a non-empty query. HideOverlay(); return false; } last_omnibox_text_has_inline_autocompletion_ = user_text != full_text; // If the user continues typing the same query as the suggested text is // showing, reuse the suggestion (but only for INSTANT_COMPLETE_NEVER). bool reused_suggestion = false; if (last_suggestion_.behavior == INSTANT_COMPLETE_NEVER && !last_omnibox_text_has_inline_autocompletion_) { if (StartsWith(last_omnibox_text_, full_text, false)) { // The user is backspacing away characters. last_suggestion_.text.insert(0, last_omnibox_text_, full_text.size(), last_omnibox_text_.size() - full_text.size()); reused_suggestion = true; } else if (StartsWith(full_text, last_omnibox_text_, false)) { // The user is typing forward. Normalize any added characters. reused_suggestion = NormalizeAndStripPrefix(&last_suggestion_.text, string16(full_text, last_omnibox_text_.size())); } } if (!reused_suggestion) last_suggestion_ = InstantSuggestion(); last_omnibox_text_ = full_text; if (!extended_enabled_) { // In non-extended mode, the query is verbatim if there's any selection // (including inline autocompletion) or if the cursor is not at the end. verbatim = verbatim || selection_start != selection_end || selection_start != full_text.size(); } last_verbatim_ = verbatim; last_transition_type_ = match.transition; url_for_history_ = match.destination_url; // Allow search suggestions. In extended mode, SearchModeChanged() will set // this, but it's not called in non-extended mode, so fake it. if (!extended_enabled_) search_mode_.mode = chrome::search::Mode::MODE_SEARCH_SUGGESTIONS; if (instant_tab_) { instant_tab_->Update(user_text, selection_start, selection_end, verbatim); } else { if (first_interaction_time_.is_null()) first_interaction_time_ = base::Time::Now(); allow_preview_to_show_search_suggestions_ = true; // For extended mode, if the loader is not ready at this point, switch over // to a backup loader. if (extended_enabled_ && !overlay_->supports_instant() && !overlay_->IsUsingLocalPreview() && browser_->GetActiveWebContents()) { CreateOverlay(chrome::search::kLocalOmniboxPopupURL, browser_->GetActiveWebContents()); } overlay_->Update(extended_enabled_ ? user_text : full_text, selection_start, selection_end, verbatim); } content::NotificationService::current()->Notify( chrome::NOTIFICATION_INSTANT_CONTROLLER_UPDATED, content::Source(this), content::NotificationService::NoDetails()); // We don't have new suggestions yet, but we can either reuse the existing // suggestion or reset the existing "gray text". browser_->SetInstantSuggestion(last_suggestion_); return true; } scoped_ptr InstantController::ReleaseNTPContents() { if (!extended_enabled_ || !ntp_) return scoped_ptr(NULL); LOG_INSTANT_DEBUG_EVENT(this, "ReleaseNTPContents"); scoped_ptr ntp_contents = ntp_->ReleaseContents(); ntp_.reset(); ResetNTP(); return ntp_contents.Pass(); } // TODO(tonyg): This method only fires when the omnibox bounds change. It also // needs to fire when the preview bounds change (e.g.: open/close info bar). void InstantController::SetPopupBounds(const gfx::Rect& bounds) { if (!extended_enabled_ && !instant_enabled_) return; if (popup_bounds_ == bounds) return; popup_bounds_ = bounds; if (popup_bounds_.height() > last_popup_bounds_.height()) { update_bounds_timer_.Stop(); SendPopupBoundsToPage(); } else if (!update_bounds_timer_.IsRunning()) { update_bounds_timer_.Start(FROM_HERE, base::TimeDelta::FromMilliseconds(kUpdateBoundsDelayMS), this, &InstantController::SendPopupBoundsToPage); } } void InstantController::SetMarginSize(int start, int end) { if (!extended_enabled_ || (start_margin_ == start && end_margin_ == end)) return; start_margin_ = start; end_margin_ = end; if (overlay_) overlay_->SetMarginSize(start_margin_, end_margin_); if (ntp_) ntp_->SetMarginSize(start_margin_, end_margin_); if (instant_tab_) instant_tab_->SetMarginSize(start_margin_, end_margin_); } void InstantController::HandleAutocompleteResults( const std::vector& providers) { if (!extended_enabled_) return; if (!instant_tab_ && !overlay_) return; DVLOG(1) << "AutocompleteResults:"; std::vector results; for (ACProviders::const_iterator provider = providers.begin(); provider != providers.end(); ++provider) { for (ACMatches::const_iterator match = (*provider)->matches().begin(); match != (*provider)->matches().end(); ++match) { InstantAutocompleteResult result; result.provider = UTF8ToUTF16((*provider)->GetName()); result.type = UTF8ToUTF16(AutocompleteMatch::TypeToString(match->type)); result.description = match->description; result.destination_url = UTF8ToUTF16(match->destination_url.spec()); result.transition = match->transition; result.relevance = match->relevance; DVLOG(1) << " " << result.relevance << " " << result.type << " " << result.provider << " " << result.destination_url << " '" << result.description << "' " << result.transition; results.push_back(result); } } LOG_INSTANT_DEBUG_EVENT(this, base::StringPrintf( "HandleAutocompleteResults: total_results=%d", static_cast(results.size()))); if (instant_tab_) instant_tab_->SendAutocompleteResults(results); else overlay_->SendAutocompleteResults(results); } bool InstantController::OnUpOrDownKeyPressed(int count) { if (!extended_enabled_) return false; if (!instant_tab_ && !overlay_) return false; if (instant_tab_) instant_tab_->UpOrDownKeyPressed(count); else overlay_->UpOrDownKeyPressed(count); return true; } void InstantController::OnCancel(const AutocompleteMatch& match, const string16& full_text) { if (!extended_enabled_) return; if (!instant_tab_ && !overlay_) return; // We manually reset the state here since the JS is not expected to do it. // TODO(sreeram): Handle the case where user_text is now a URL last_match_was_search_ = AutocompleteMatch::IsSearchType(match.type) && !full_text.empty(); last_omnibox_text_ = full_text; last_suggestion_ = InstantSuggestion(); if (instant_tab_) instant_tab_->CancelSelection(full_text); else overlay_->CancelSelection(full_text); } content::WebContents* InstantController::GetPreviewContents() const { return overlay_ ? overlay_->contents() : NULL; } bool InstantController::IsPreviewingSearchResults() const { return model_.mode().is_search_suggestions() && IsFullHeight(model_) && (last_match_was_search_ || last_suggestion_.behavior == INSTANT_COMPLETE_NEVER); } bool InstantController::CommitIfPossible(InstantCommitType type) { if (!extended_enabled_ && !instant_enabled_) return false; LOG_INSTANT_DEBUG_EVENT(this, base::StringPrintf( "CommitIfPossible: type=%d last_omnibox_text_='%s' " "last_match_was_search_=%d instant_tab_=%d", type, UTF16ToUTF8(last_omnibox_text_).c_str(), last_match_was_search_, instant_tab_ != NULL)); // If we are on an already committed search results page, send a submit event // to the page, but otherwise, nothing else to do. if (instant_tab_) { if (type == INSTANT_COMMIT_PRESSED_ENTER && (last_match_was_search_ || last_suggestion_.behavior == INSTANT_COMPLETE_NEVER)) { EnsureSearchTermsAreSet(instant_tab_->contents(), last_omnibox_text_); instant_tab_->Submit(last_omnibox_text_); instant_tab_->contents()->GetView()->Focus(); return true; } return false; } if (!IsPreviewingSearchResults() && type != INSTANT_COMMIT_NAVIGATED) return false; // There may re-entrance here, from the call to browser_->CommitInstant below, // which can cause a TabDeactivated notification which gets back here. // In this case, overlay_->ReleaseContents() was called already. if (!GetPreviewContents()) return false; // Never commit the local omnibox. if (overlay_->IsUsingLocalPreview()) return false; if (type == INSTANT_COMMIT_FOCUS_LOST) overlay_->Cancel(last_omnibox_text_); else if (type != INSTANT_COMMIT_NAVIGATED && type != INSTANT_COMMIT_CLICKED_QUERY_SUGGESTION) overlay_->Submit(last_omnibox_text_); scoped_ptr preview = overlay_->ReleaseContents(); if (extended_enabled_) { // Adjust the search terms shown in the omnibox for this query. Hitting // ENTER searches for what the user typed, so use last_omnibox_text_. // Clicking on the overlay commits what is currently showing, so add in the // gray text in that case. if (type == INSTANT_COMMIT_FOCUS_LOST && last_suggestion_.behavior == INSTANT_COMPLETE_NEVER) { // Update |last_omnibox_text_| so that the controller commits the proper // query if the user focuses the omnibox and presses Enter. last_omnibox_text_ += last_suggestion_.text; } EnsureSearchTermsAreSet(preview.get(), last_omnibox_text_); } // If the preview page has navigated since the last Update(), we need to add // the navigation to history ourselves. Else, the page will navigate after // commit, and it will be added to history in the usual manner. const history::HistoryAddPageArgs& last_navigation = overlay_->last_navigation(); if (!last_navigation.url.is_empty()) { content::NavigationEntry* entry = preview->GetController().GetActiveEntry(); // The last navigation should be the same as the active entry if the overlay // is in search mode. During navigation, the active entry could have // changed since DidCommitProvisionalLoadForFrame is called after the entry // is changed. // TODO(shishir): Should we commit the last navigation for // INSTANT_COMMIT_NAVIGATED. DCHECK(type == INSTANT_COMMIT_NAVIGATED || last_navigation.url == entry->GetURL()); // Add the page to history. HistoryTabHelper* history_tab_helper = HistoryTabHelper::FromWebContents(preview.get()); history_tab_helper->UpdateHistoryForNavigation(last_navigation); // Update the page title. history_tab_helper->UpdateHistoryPageTitle(*entry); } // Add a fake history entry with a non-Instant search URL, so that search // terms extraction (for autocomplete history matches) works. HistoryService* history = HistoryServiceFactory::GetForProfile( Profile::FromBrowserContext(preview->GetBrowserContext()), Profile::EXPLICIT_ACCESS); if (history) { history->AddPage(url_for_history_, base::Time::Now(), NULL, 0, GURL(), history::RedirectList(), last_transition_type_, history::SOURCE_BROWSED, false); } if (type == INSTANT_COMMIT_PRESSED_ALT_ENTER) { preview->GetController().PruneAllButActive(); } else { content::WebContents* active_tab = browser_->GetActiveWebContents(); AddSessionStorageHistogram(extended_enabled_, active_tab, preview.get()); preview->GetController().CopyStateFromAndPrune( &active_tab->GetController()); } // Save notification source before we release the preview. content::Source notification_source(preview.get()); browser_->CommitInstant(preview.Pass(), type == INSTANT_COMMIT_PRESSED_ALT_ENTER); content::NotificationService::current()->Notify( chrome::NOTIFICATION_INSTANT_COMMITTED, notification_source, content::NotificationService::NoDetails()); // Hide explicitly. See comments in HideOverlay() for why. model_.SetPreviewState(chrome::search::Mode(), 0, INSTANT_SIZE_PERCENT); // Delay deletion as we could've gotten here from an InstantOverlay method. MessageLoop::current()->DeleteSoon(FROM_HERE, overlay_.release()); // Try to create another overlay immediately so that it is ready for the next // user interaction. EnsureOverlayIsCurrent(false); LOG_INSTANT_DEBUG_EVENT(this, "Committed"); return true; } void InstantController::OmniboxFocusChanged( OmniboxFocusState state, OmniboxFocusChangeReason reason, gfx::NativeView view_gaining_focus) { LOG_INSTANT_DEBUG_EVENT(this, base::StringPrintf( "OmniboxFocusChanged: %d to %d for reason %d", omnibox_focus_state_, state, reason)); OmniboxFocusState old_focus_state = omnibox_focus_state_; omnibox_focus_state_ = state; if (!extended_enabled_ && !instant_enabled_) return; // Tell the page if the key capture mode changed unless the focus state // changed because of TYPING. This is because in that case, the browser hasn't // really stopped capturing key strokes. // // (More practically, if we don't do this check, the page would receive // onkeycapturechange before the corresponding onchange, and the page would // have no way of telling whether the keycapturechange happened because of // some actual user action or just because they started typing.) if (extended_enabled_ && GetPreviewContents() && reason != OMNIBOX_FOCUS_CHANGE_TYPING) { const bool is_key_capture_enabled = omnibox_focus_state_ == OMNIBOX_FOCUS_INVISIBLE; if (overlay_) overlay_->KeyCaptureChanged(is_key_capture_enabled); if (instant_tab_) instant_tab_->KeyCaptureChanged(is_key_capture_enabled); } // If focus went from outside the omnibox to the omnibox, preload the default // search engine, in anticipation of the user typing a query. If the reverse // happened, commit or discard the preview. if (state != OMNIBOX_FOCUS_NONE && old_focus_state == OMNIBOX_FOCUS_NONE) { // On explicit user actions, ignore the Instant blacklist. EnsureOverlayIsCurrent(reason == OMNIBOX_FOCUS_CHANGE_EXPLICIT); } else if (state == OMNIBOX_FOCUS_NONE && old_focus_state != OMNIBOX_FOCUS_NONE) { OmniboxLostFocus(view_gaining_focus); } } void InstantController::SearchModeChanged( const chrome::search::Mode& old_mode, const chrome::search::Mode& new_mode) { if (!extended_enabled_) return; LOG_INSTANT_DEBUG_EVENT(this, base::StringPrintf( "SearchModeChanged: [origin:mode] %d:%d to %d:%d", old_mode.origin, old_mode.mode, new_mode.origin, new_mode.mode)); search_mode_ = new_mode; if (!new_mode.is_search_suggestions()) HideOverlay(); ResetInstantTab(); } void InstantController::ActiveTabChanged() { if (!extended_enabled_ && !instant_enabled_) return; LOG_INSTANT_DEBUG_EVENT(this, "ActiveTabChanged"); // When switching tabs, always hide the preview. HideOverlay(); if (extended_enabled_) ResetInstantTab(); } void InstantController::TabDeactivated(content::WebContents* contents) { LOG_INSTANT_DEBUG_EVENT(this, "TabDeactivated"); if (extended_enabled_ && !contents->IsBeingDestroyed()) CommitIfPossible(INSTANT_COMMIT_FOCUS_LOST); } void InstantController::SetInstantEnabled(bool instant_enabled, bool use_local_preview_only) { LOG_INSTANT_DEBUG_EVENT(this, base::StringPrintf( "SetInstantEnabled: instant_enabled=%d, use_local_preview_only=%d", instant_enabled, use_local_preview_only)); // Non extended mode does not care about |use_local_preview_only|. if (instant_enabled == instant_enabled_ && (!extended_enabled_ || use_local_preview_only == use_local_preview_only_)) { return; } instant_enabled_ = instant_enabled; use_local_preview_only_ = use_local_preview_only; HideInternal(); overlay_.reset(); if (extended_enabled_ || instant_enabled_) EnsureOverlayIsCurrent(false); if (extended_enabled_) ResetNTP(); if (instant_tab_) instant_tab_->SetDisplayInstantResults(instant_enabled_); } void InstantController::ThemeChanged(const ThemeBackgroundInfo& theme_info) { if (!extended_enabled_) return; if (overlay_) overlay_->SendThemeBackgroundInfo(theme_info); if (ntp_) ntp_->SendThemeBackgroundInfo(theme_info); if (instant_tab_) instant_tab_->SendThemeBackgroundInfo(theme_info); } void InstantController::SwappedOverlayContents() { model_.SetPreviewContents(GetPreviewContents()); } void InstantController::FocusedOverlayContents() { #if defined(USE_AURA) // On aura the omnibox only receives a focus lost if we initiate the focus // change. This does that. if (!model_.mode().is_default()) browser_->InstantPreviewFocused(); #endif } void InstantController::ReloadOverlayIfStale() { // The local popup is never stale. if (overlay_ && overlay_->IsUsingLocalPreview()) return; // If the preview is showing or the omnibox has focus, don't delete the // overlay. It will get refreshed the next time the preview is hidden or the // omnibox loses focus. if ((!overlay_ || overlay_->is_stale()) && omnibox_focus_state_ == OMNIBOX_FOCUS_NONE && model_.mode().is_default()) { overlay_.reset(); EnsureOverlayIsCurrent(false); } } void InstantController::LogDebugEvent(const std::string& info) const { DVLOG(1) << info; debug_events_.push_front(std::make_pair( base::Time::Now().ToInternalValue(), info)); static const size_t kMaxDebugEventSize = 2000; if (debug_events_.size() > kMaxDebugEventSize) debug_events_.pop_back(); } void InstantController::DeleteMostVisitedItem(const GURL& url) { history::TopSites* top_sites = browser_->profile()->GetTopSites(); if (!top_sites) return; top_sites->AddBlacklistedURL(url); } void InstantController::UndoMostVisitedDeletion(const GURL& url) { history::TopSites* top_sites = browser_->profile()->GetTopSites(); if (!top_sites) return; top_sites->RemoveBlacklistedURL(url); } void InstantController::UndoAllMostVisitedDeletions() { history::TopSites* top_sites = browser_->profile()->GetTopSites(); if (!top_sites) return; top_sites->ClearBlacklistedURLs(); } void InstantController::Observe(int type, const content::NotificationSource& source, const content::NotificationDetails& details) { DCHECK_EQ(type, chrome::NOTIFICATION_TOP_SITES_CHANGED); RequestMostVisitedItems(); } // TODO(shishir): We assume that the WebContent's current RenderViewHost is the // RenderViewHost being created which is not always true. Fix this. void InstantController::InstantPageRenderViewCreated( const content::WebContents* contents) { if (!extended_enabled_) return; // Update theme info so that the page picks it up. browser_->UpdateThemeInfo(false); // Ensure the searchbox API has the correct initial state. if (IsContentsFrom(overlay(), contents)) { overlay_->SetDisplayInstantResults(instant_enabled_); overlay_->KeyCaptureChanged( omnibox_focus_state_ == OMNIBOX_FOCUS_INVISIBLE); overlay_->SetMarginSize(start_margin_, end_margin_); overlay_->InitializeFonts(); } else if (IsContentsFrom(ntp(), contents)) { ntp_->SetDisplayInstantResults(instant_enabled_); ntp_->SetMarginSize(start_margin_, end_margin_); ntp_->InitializeFonts(); } else { NOTREACHED(); } StartListeningToMostVisitedChanges(); } void InstantController::InstantSupportDetermined( const content::WebContents* contents, bool supports_instant) { if (IsContentsFrom(instant_tab(), contents)) { if (!supports_instant) MessageLoop::current()->DeleteSoon(FROM_HERE, instant_tab_.release()); } else if (IsContentsFrom(ntp(), contents)) { if (supports_instant) RemoveFromBlacklist(ntp_->instant_url()); else BlacklistAndResetNTP(); content::NotificationService::current()->Notify( chrome::NOTIFICATION_INSTANT_NTP_SUPPORT_DETERMINED, content::Source(this), content::NotificationService::NoDetails()); } else if (IsContentsFrom(overlay(), contents)) { if (supports_instant) RemoveFromBlacklist(overlay_->instant_url()); else BlacklistAndResetOverlay(); content::NotificationService::current()->Notify( chrome::NOTIFICATION_INSTANT_OVERLAY_SUPPORT_DETERMINED, content::Source(this), content::NotificationService::NoDetails()); } } void InstantController::InstantPageRenderViewGone( const content::WebContents* contents) { if (IsContentsFrom(overlay(), contents)) BlacklistAndResetOverlay(); else if (IsContentsFrom(ntp(), contents)) BlacklistAndResetNTP(); else NOTREACHED(); } void InstantController::InstantPageAboutToNavigateMainFrame( const content::WebContents* contents, const GURL& url) { DCHECK(IsContentsFrom(overlay(), contents)); // If the page does not yet support instant, we allow redirects and other // navigations to go through since the instant URL can redirect - e.g. to // country specific pages. if (!overlay_->supports_instant()) return; GURL instant_url(overlay_->instant_url()); // If we are navigating to the instant URL, do nothing. if (url == instant_url) return; // Commit the navigation if either: // - The page is in NTP mode (so it could only navigate on a user click) or // - The page is not in NTP mode and we are navigating to a URL with a // different host or path than the instant URL. This enables the instant // page when it is showing search results to change the query parameters // and fragments of the URL without it navigating. if (model_.mode().is_ntp() || (url.host() != instant_url.host() || url.path() != instant_url.path())) { CommitIfPossible(INSTANT_COMMIT_NAVIGATED); } } void InstantController::SetSuggestions( const content::WebContents* contents, const std::vector& suggestions) { LOG_INSTANT_DEBUG_EVENT(this, "SetSuggestions"); // Ignore if the message is from an unexpected source. if (IsContentsFrom(ntp(), contents)) return; if (instant_tab_ && !IsContentsFrom(instant_tab(), contents)) return; if (IsContentsFrom(overlay(), contents) && !allow_preview_to_show_search_suggestions_) return; InstantSuggestion suggestion; if (!suggestions.empty()) suggestion = suggestions[0]; if (instant_tab_ && search_mode_.is_search_results() && suggestion.behavior == INSTANT_COMPLETE_REPLACE) { // Update |last_omnibox_text_| so that the controller commits the proper // query if the user focuses the omnibox and presses Enter. last_omnibox_text_ = suggestion.text; last_suggestion_ = InstantSuggestion(); last_match_was_search_ = suggestion.type == INSTANT_SUGGESTION_SEARCH; // This means a committed page in state search called setValue(). We should // update the omnibox to reflect what the search page says. browser_->SetInstantSuggestion(suggestion); return; } // Ignore if we are not currently accepting search suggestions. if (!search_mode_.is_search_suggestions() || last_omnibox_text_.empty()) return; if (suggestion.behavior == INSTANT_COMPLETE_REPLACE) { // We don't get an Update() when changing the omnibox due to a REPLACE // suggestion (so that we don't inadvertently cause the preview to change // what it's showing, as the user arrows up/down through the page-provided // suggestions). So, update these state variables here. last_omnibox_text_ = suggestion.text; last_suggestion_ = InstantSuggestion(); last_match_was_search_ = suggestion.type == INSTANT_SUGGESTION_SEARCH; LOG_INSTANT_DEBUG_EVENT(this, base::StringPrintf( "ReplaceSuggestion text='%s' type=%d", UTF16ToUTF8(suggestion.text).c_str(), suggestion.type)); browser_->SetInstantSuggestion(suggestion); } else { bool is_valid_suggestion = true; // If the page is trying to set inline autocompletion in verbatim mode, // instead try suggesting the exact omnibox text. This makes the omnibox // interpret user text as an URL if possible while preventing unwanted // autocompletion during backspacing. if (suggestion.behavior == INSTANT_COMPLETE_NOW && last_verbatim_) suggestion.text = last_omnibox_text_; // Suggestion text should be a full URL for URL suggestions, or the // completion of a query for query suggestions. if (suggestion.type == INSTANT_SUGGESTION_URL) { // If the suggestion is not a valid URL, perhaps it's something like // "foo.com". Try prefixing "http://". If it still isn't valid, drop it. if (!GURL(suggestion.text).is_valid()) { suggestion.text.insert(0, ASCIIToUTF16("http://")); if (!GURL(suggestion.text).is_valid()) is_valid_suggestion = false; } } else if (StartsWith(suggestion.text, last_omnibox_text_, true)) { // The user typed an exact prefix of the suggestion. suggestion.text.erase(0, last_omnibox_text_.size()); } else if (!NormalizeAndStripPrefix(&suggestion.text, last_omnibox_text_)) { // Unicode normalize and case-fold the user text and suggestion. If the // user text is a prefix, suggest the normalized, case-folded completion; // for instance, if the user types 'i' and the suggestion is 'INSTANT', // suggest 'nstant'. Otherwise, the user text really isn't a prefix, so // suggest nothing. is_valid_suggestion = false; } // Don't suggest gray text if there already was inline autocompletion. // http://crbug.com/162303 if (suggestion.behavior == INSTANT_COMPLETE_NEVER && last_omnibox_text_has_inline_autocompletion_) is_valid_suggestion = false; if (is_valid_suggestion) { last_suggestion_ = suggestion; LOG_INSTANT_DEBUG_EVENT(this, base::StringPrintf( "SetInstantSuggestion: text='%s' behavior=%d", UTF16ToUTF8(suggestion.text).c_str(), suggestion.behavior)); browser_->SetInstantSuggestion(suggestion); } else { last_suggestion_ = InstantSuggestion(); } } // Extended mode pages will call ShowOverlay() when they are ready. if (!extended_enabled_) ShowOverlay(INSTANT_SHOWN_QUERY_SUGGESTIONS, 100, INSTANT_SIZE_PERCENT); } void InstantController::ShowInstantOverlay(const content::WebContents* contents, InstantShownReason reason, int height, InstantSizeUnits units) { if (extended_enabled_ && IsContentsFrom(overlay(), contents)) ShowOverlay(reason, height, units); } void InstantController::StartCapturingKeyStrokes( const content::WebContents* contents) { if (!extended_enabled_) return; DCHECK(IsContentsFrom(instant_tab(), contents)); browser_->FocusOmniboxInvisibly(); } void InstantController::StopCapturingKeyStrokes( content::WebContents* contents) { // Nothing to do if omnibox doesn't have invisible focus. if (!extended_enabled_ || omnibox_focus_state_ != OMNIBOX_FOCUS_INVISIBLE) return; DCHECK(IsContentsFrom(instant_tab(), contents)); contents->GetView()->Focus(); } void InstantController::NavigateToURL(const content::WebContents* contents, const GURL& url, content::PageTransition transition, WindowOpenDisposition disposition) { LOG_INSTANT_DEBUG_EVENT(this, base::StringPrintf( "NavigateToURL: url='%s'", url.spec().c_str())); // TODO(samarth): handle case where contents are no longer "active" (e.g. user // has switched tabs). if (!extended_enabled_) return; if (overlay_) HideOverlay(); browser_->OpenURL(url, transition, disposition); } void InstantController::OmniboxLostFocus(gfx::NativeView view_gaining_focus) { // If the preview is showing custom NTP content, don't hide it, commit it // (no matter where the user clicked) or try to recreate it. if (model_.mode().is_ntp()) return; // If the preview is not showing at all, recreate it if it's stale. if (model_.mode().is_default()) { ReloadOverlayIfStale(); MaybeSwitchToRemoteOverlay(); return; } // The preview is showing search suggestions. If GetPreviewContents() is NULL, // we are in the commit path. Don't do anything. if (!GetPreviewContents()) return; #if defined(OS_MACOSX) // TODO(sreeram): See if Mac really needs this special treatment. if (!overlay_->is_pointer_down_from_activate()) HideOverlay(); #else if (IsViewInContents(GetViewGainingFocus(view_gaining_focus), overlay_->contents())) CommitIfPossible(INSTANT_COMMIT_FOCUS_LOST); else HideOverlay(); #endif } void InstantController::ResetNTP() { ntp_.reset(); std::string instant_url; if (!GetInstantURL(browser_->profile(), false, &instant_url)) return; ntp_.reset(new InstantNTP(this, instant_url)); ntp_->InitContents(browser_->profile(), browser_->GetActiveWebContents(), base::Bind(&InstantController::ResetNTP, base::Unretained(this))); } bool InstantController::EnsureOverlayIsCurrent(bool ignore_blacklist) { // If there's no active tab, the browser is closing. const content::WebContents* active_tab = browser_->GetActiveWebContents(); if (!active_tab) return false; Profile* profile = Profile::FromBrowserContext( active_tab->GetBrowserContext()); std::string instant_url; if (!GetInstantURL(profile, ignore_blacklist, &instant_url)) { // If we are in extended mode, fallback to the local popup. if (extended_enabled_) instant_url = chrome::search::kLocalOmniboxPopupURL; else return false; } if (!overlay_ || overlay_->instant_url() != instant_url) CreateOverlay(instant_url, active_tab); return true; } void InstantController::CreateOverlay(const std::string& instant_url, const content::WebContents* active_tab) { HideInternal(); overlay_.reset(new InstantOverlay(this, instant_url)); overlay_->InitContents(browser_->profile(), active_tab); LOG_INSTANT_DEBUG_EVENT(this, base::StringPrintf( "CreateOverlay: instant_url='%s'", instant_url.c_str())); } void InstantController::MaybeSwitchToRemoteOverlay() { if (!overlay_ || omnibox_focus_state_ != OMNIBOX_FOCUS_NONE || !model_.mode().is_default()) { return; } EnsureOverlayIsCurrent(false); } void InstantController::ResetInstantTab() { // Do not wire up the InstantTab if instant should only use local previews, to // prevent it from sending data to the page. if (!search_mode_.is_origin_default() && !use_local_preview_only_) { content::WebContents* active_tab = browser_->GetActiveWebContents(); if (!instant_tab_ || active_tab != instant_tab_->contents()) { instant_tab_.reset(new InstantTab(this)); instant_tab_->Init(active_tab); // Update theme info for this tab. browser_->UpdateThemeInfo(false); instant_tab_->SetDisplayInstantResults(instant_enabled_); instant_tab_->SetMarginSize(start_margin_, end_margin_); instant_tab_->InitializeFonts(); StartListeningToMostVisitedChanges(); instant_tab_->KeyCaptureChanged( omnibox_focus_state_ == OMNIBOX_FOCUS_INVISIBLE); } // Hide the |overlay_| since we are now using |instant_tab_| instead. HideOverlay(); } else { instant_tab_.reset(); } } void InstantController::HideOverlay() { HideInternal(); ReloadOverlayIfStale(); MaybeSwitchToRemoteOverlay(); } void InstantController::HideInternal() { LOG_INSTANT_DEBUG_EVENT(this, "Hide"); // If GetPreviewContents() returns NULL, either we're already in the desired // MODE_DEFAULT state, or we're in the commit path. For the latter, don't // change the state just yet; else we may hide the preview unnecessarily. // Instead, the state will be set correctly after the commit is done. if (GetPreviewContents()) { model_.SetPreviewState(chrome::search::Mode(), 0, INSTANT_SIZE_PERCENT); allow_preview_to_show_search_suggestions_ = false; // Send a message asking the preview to clear out old results. overlay_->Update(string16(), 0, 0, true); } // Clear the first interaction timestamp for later use. first_interaction_time_ = base::Time(); } void InstantController::ShowOverlay(InstantShownReason reason, int height, InstantSizeUnits units) { // If we are on a committed search results page, the |overlay_| is not in use. if (instant_tab_) return; LOG_INSTANT_DEBUG_EVENT(this, base::StringPrintf( "Show: reason=%d height=%d units=%d", reason, height, units)); // INSTANT_SHOWN_CUSTOM_NTP_CONTENT is no longer supported. // TODO(samarth): remove once the server has been updated. if (reason == INSTANT_SHOWN_CUSTOM_NTP_CONTENT) return; // Must have updated omnibox after the last HideOverlay() to show suggestions. if ((reason == INSTANT_SHOWN_QUERY_SUGGESTIONS || reason == INSTANT_SHOWN_CLICKED_QUERY_SUGGESTION) && !allow_preview_to_show_search_suggestions_) return; // The page is trying to hide itself. Hide explicitly (i.e., don't use // HideOverlay()) so that it can change its mind. if (height == 0) { model_.SetPreviewState(chrome::search::Mode(), 0, INSTANT_SIZE_PERCENT); return; } // If the preview is being shown for the first time since the user started // typing, record a histogram value. if (!first_interaction_time_.is_null() && model_.mode().is_default()) { base::TimeDelta delta = base::Time::Now() - first_interaction_time_; UMA_HISTOGRAM_TIMES("Instant.TimeToFirstShow", delta); } // Show at 100% height except in the following cases: // - The local omnibox popup is being loaded. // - Instant is disabled. The page needs to be able to show only a dropdown. // - The page wants to show custom NTP content. // - The page is over a website other than search or an NTP, and is not // already showing at 100% height. if (overlay_->IsUsingLocalPreview() || !instant_enabled_ || reason == INSTANT_SHOWN_CUSTOM_NTP_CONTENT || (search_mode_.is_origin_default() && !IsFullHeight(model_))) model_.SetPreviewState(search_mode_, height, units); else model_.SetPreviewState(search_mode_, 100, INSTANT_SIZE_PERCENT); // If the user clicked on a query suggestion, also go ahead and commit the // overlay. This is necessary because if the overlay was partially visible // when the suggestion was clicked, the click itself would not commit the // overlay (because we're not full height). if (reason == INSTANT_SHOWN_CLICKED_QUERY_SUGGESTION) CommitIfPossible(INSTANT_COMMIT_CLICKED_QUERY_SUGGESTION); } void InstantController::SendPopupBoundsToPage() { if (last_popup_bounds_ == popup_bounds_ || !overlay_ || overlay_->is_pointer_down_from_activate()) return; last_popup_bounds_ = popup_bounds_; gfx::Rect preview_bounds = browser_->GetInstantBounds(); gfx::Rect intersection = gfx::IntersectRects(popup_bounds_, preview_bounds); // Translate into window coordinates. if (!intersection.IsEmpty()) { intersection.Offset(-preview_bounds.origin().x(), -preview_bounds.origin().y()); } // In the current Chrome UI, these must always be true so they sanity check // the above operations. In a future UI, these may be removed or adjusted. // There is no point in sanity-checking |intersection.y()| because the omnibox // can be placed anywhere vertically relative to the preview (for example, in // Mac fullscreen mode, the omnibox is fully enclosed by the preview bounds). DCHECK_LE(0, intersection.x()); DCHECK_LE(0, intersection.width()); DCHECK_LE(0, intersection.height()); overlay_->SetPopupBounds(intersection); } bool InstantController::GetInstantURL(Profile* profile, bool ignore_blacklist, std::string* instant_url) const { DCHECK(profile); instant_url->clear(); if (extended_enabled_ && use_local_preview_only_) { *instant_url = chrome::search::kLocalOmniboxPopupURL; return true; } const TemplateURL* template_url = TemplateURLServiceFactory::GetForProfile( profile)->GetDefaultSearchProvider(); if (!template_url) { LOG_INSTANT_DEBUG_EVENT(this, "GetInstantURL: No template URL"); return false; } CommandLine* command_line = CommandLine::ForCurrentProcess(); if (command_line->HasSwitch(switches::kInstantURL)) *instant_url = command_line->GetSwitchValueASCII(switches::kInstantURL); if (instant_url->empty()) { const TemplateURLRef& instant_url_ref = template_url->instant_url_ref(); if (!instant_url_ref.IsValid()) { LOG_INSTANT_DEBUG_EVENT(this, base::StringPrintf( "GetInstantURL: TemplateRef invalid: url=%s", template_url->instant_url().c_str())); return false; } // Even if the URL template doesn't have search terms, it may have other // components (such as {google:baseURL}) that need to be replaced. *instant_url = instant_url_ref.ReplaceSearchTerms( TemplateURLRef::SearchTermsArgs(string16())); // Extended mode should always use HTTPS. TODO(sreeram): This section can be // removed if TemplateURLs supported "https://{google:host}/..." instead of // only supporting "{google:baseURL}...". if (extended_enabled_) { GURL url_obj(*instant_url); if (!url_obj.is_valid()) { LOG_INSTANT_DEBUG_EVENT(this, base::StringPrintf( "GetInstantURL: Instant URL invalid: url=%s", url_obj.possibly_invalid_spec().c_str())); return false; } // Extended mode won't work properly unless the TemplateURL supports the // param to enable it on the server. if (!template_url->HasSearchTermsReplacementKey(url_obj)) { LOG_INSTANT_DEBUG_EVENT(this, base::StringPrintf( "GetInstantURL: No search terms replacement key: url=%s", url_obj.spec().c_str())); return false; } if (!url_obj.SchemeIsSecure()) { std::string new_scheme = "https"; std::string new_port = "443"; GURL::Replacements secure; secure.SetSchemeStr(new_scheme); secure.SetPortStr(new_port); url_obj = url_obj.ReplaceComponents(secure); if (!url_obj.is_valid()) { LOG_INSTANT_DEBUG_EVENT(this, base::StringPrintf( "GetInstantURL: HTTPS URL invalid: url=%s", url_obj.possibly_invalid_spec().c_str())); return false; } *instant_url = url_obj.spec(); } } } if (!ignore_blacklist) { std::map::const_iterator iter = blacklisted_urls_.find(*instant_url); if (iter != blacklisted_urls_.end() && iter->second > kMaxInstantSupportFailures) { RecordEventHistogram(INSTANT_CONTROLLER_EVENT_URL_BLOCKED_BY_BLACKLIST); LOG_INSTANT_DEBUG_EVENT(this, base::StringPrintf( "GetInstantURL: Instant URL blacklisted: url=%s", instant_url->c_str())); return false; } } return true; } void InstantController::BlacklistAndResetNTP() { ++blacklisted_urls_[ntp_->instant_url()]; RecordEventHistogram(INSTANT_CONTROLLER_EVENT_URL_ADDED_TO_BLACKLIST); delete ntp_->ReleaseContents().release(); MessageLoop::current()->DeleteSoon(FROM_HERE, ntp_.release()); ResetNTP(); } void InstantController::BlacklistAndResetOverlay() { ++blacklisted_urls_[overlay_->instant_url()]; RecordEventHistogram(INSTANT_CONTROLLER_EVENT_URL_ADDED_TO_BLACKLIST); HideInternal(); delete overlay_->ReleaseContents().release(); MessageLoop::current()->DeleteSoon(FROM_HERE, overlay_.release()); EnsureOverlayIsCurrent(false); } void InstantController::RemoveFromBlacklist(const std::string& url) { if (blacklisted_urls_.erase(url)) { RecordEventHistogram(INSTANT_CONTROLLER_EVENT_URL_REMOVED_FROM_BLACKLIST); } } void InstantController::StartListeningToMostVisitedChanges() { history::TopSites* top_sites = browser_->profile()->GetTopSites(); if (top_sites) { if (!registrar_.IsRegistered( this, chrome::NOTIFICATION_TOP_SITES_CHANGED, content::Source(top_sites))) { // TopSites updates itself after a delay. This is especially noticable // when your profile is empty. Ask TopSites to update itself when we're // about to show the new tab page. top_sites->SyncWithHistory(); RequestMostVisitedItems(); // Register for notification when TopSites changes. registrar_.Add(this, chrome::NOTIFICATION_TOP_SITES_CHANGED, content::Source(top_sites)); } else { // We are already registered, so just get and send the most visited data. RequestMostVisitedItems(); } } } void InstantController::RequestMostVisitedItems() { history::TopSites* top_sites = browser_->profile()->GetTopSites(); if (top_sites) { top_sites->GetMostVisitedURLs( base::Bind(&InstantController::OnMostVisitedItemsReceived, weak_ptr_factory_.GetWeakPtr())); } } void InstantController::OnMostVisitedItemsReceived( const history::MostVisitedURLList& data) { std::vector most_visited_items; for (size_t i = 0; i < data.size(); i++) { const history::MostVisitedURL& url = data[i]; MostVisitedItem item; item.url = url.url; item.title = url.title; most_visited_items.push_back(item); } SendMostVisitedItems(most_visited_items); } void InstantController::SendMostVisitedItems( const std::vector& items) { if (overlay_) overlay_->SendMostVisitedItems(items); if (ntp_) ntp_->SendMostVisitedItems(items); if (instant_tab_) instant_tab_->SendMostVisitedItems(items); content::NotificationService::current()->Notify( chrome::NOTIFICATION_INSTANT_SENT_MOST_VISITED_ITEMS, content::Source(this), content::NotificationService::NoDetails()); }