Chromium Code Reviews
chromiumcodereview-hr@appspot.gserviceaccount.com (chromiumcodereview-hr) | Please choose your nickname with Settings | Help | Chromium Project | Gerrit Changes | Sign out
(1470)

Issues Search
    My Issues | Starred     Open | Closed | All

Unified Diff: chrome/browser/instant/instant_controller.cc

Issue 12386019: Instant: Use only one hidden WebContents per profile. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: . Created 7 years, 9 months ago
Use n/p to move between diff chunks; N/P to move between comments. Draft comments are only viewable by you.
Jump to:
View side-by-side diff with in-line comments
Download patch
« chrome/browser/instant/instant_controller.h ('K') | « chrome/browser/instant/instant_controller.h ('k') | chrome/browser/instant/instant_controller_impl.h » ('j') | chrome/browser/instant/instant_page.h » ('J')
Expand Comments ('e') | Collapse Comments ('c') | Show Comments Hide Comments ('s')
Index: chrome/browser/instant/instant_controller.cc
diff --git a/chrome/browser/instant/instant_controller.cc b/chrome/browser/instant/instant_controller.cc
index ff58a6cadc23b1a2ee84a390a024f97265cacedc..18e5c6099a2f4cc3d1e6d242caadbe8f14e85b40 100644
--- a/chrome/browser/instant/instant_controller.cc
+++ b/chrome/browser/instant/instant_controller.cc
@@ -4,1485 +4,24 @@
#include "chrome/browser/instant/instant_controller.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/instant/instant_controller_extended_impl.h"
+#include "chrome/browser/instant/instant_controller_impl.h"
#include "chrome/browser/instant/search.h"
-#include "chrome/browser/platform_util.h"
-#include "chrome/browser/search_engines/search_terms_data.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_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();
+// static
+scoped_ptr<InstantController> InstantController::Create(
+ chrome::BrowserInstantController* browser,
+ Profile* profile) {
+ if (chrome::search::IsInstantExtendedAPIEnabled()) {
+ return scoped_ptr<InstantController>(
+ new InstantControllerExtendedImpl(browser, profile));
}
-#endif
- return view_gaining_focus;
+ return scoped_ptr<InstantController>(
+ new InstantControllerImpl(browser, profile));
}
-// 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 InstantOverlayModel& 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;
-
- const content::NavigationEntry* active_entry = controller->GetActiveEntry();
- content::NavigationEntry* transient = controller->CreateNavigationEntry(
- active_entry->GetURL(),
- active_entry->GetReferrer(),
- active_entry->GetTransitionType(),
- false,
- std::string(),
- contents->GetBrowserContext());
- 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_overlay_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),
- omnibox_bounds_(-1, -1, 0, 0),
- allow_overlay_to_show_search_suggestions_(false),
- ALLOW_THIS_IN_INITIALIZER_LIST(weak_ptr_factory_(this)) {
+InstantController::InstantController() {
}
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<int>(selection_start), static_cast<int>(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 overlay 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 an overlay that is
- // current or is using the local overlay.
- if (!instant_tab_ && !(overlay_ && overlay_->IsUsingLocalOverlay()) &&
- !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 overlay 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 overlay to clear old results. Don't hide the
- // overlay 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 overlay 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_overlay_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_->IsUsingLocalOverlay() && 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<InstantController>(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<content::WebContents> InstantController::ReleaseNTPContents() {
- if (!extended_enabled_ || !ntp_)
- return scoped_ptr<content::WebContents>(NULL);
-
- LOG_INSTANT_DEBUG_EVENT(this, "ReleaseNTPContents");
-
- scoped_ptr<content::WebContents> 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 overlay 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::SetOmniboxBounds(const gfx::Rect& bounds) {
- if (!extended_enabled_ || omnibox_bounds_ == bounds)
- return;
-
- omnibox_bounds_ = bounds;
- if (overlay_)
- overlay_->SetOmniboxBounds(omnibox_bounds_);
- if (ntp_)
- ntp_->SetOmniboxBounds(omnibox_bounds_);
- if (instant_tab_)
- instant_tab_->SetOmniboxBounds(omnibox_bounds_);
-}
-
-void InstantController::HandleAutocompleteResults(
- const std::vector<AutocompleteProvider*>& providers) {
- if (!extended_enabled_)
- return;
-
- if (!instant_tab_ && !overlay_)
- return;
-
- DVLOG(1) << "AutocompleteResults:";
- std::vector<InstantAutocompleteResult> results;
- for (ACProviders::const_iterator provider = providers.begin();
- provider != providers.end(); ++provider) {
- // Skip SearchProvider, since it only echoes suggestions.
- if ((*provider)->type() == AutocompleteProvider::TYPE_SEARCH)
- continue;
- 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<int>(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::GetOverlayContents() const {
- return overlay_ ? overlay_->contents() : NULL;
-}
-
-bool InstantController::IsOverlayingSearchResults() 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 (!IsOverlayingSearchResults() && 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 (!GetOverlayContents())
- return false;
-
- // Never commit the local overlay.
- if (overlay_->IsUsingLocalOverlay())
- return false;
-
- if (type == INSTANT_COMMIT_FOCUS_LOST)
- overlay_->Cancel(last_omnibox_text_);
- else if (type != INSTANT_COMMIT_NAVIGATED)
- overlay_->Submit(last_omnibox_text_);
-
- scoped_ptr<content::WebContents> overlay = overlay_->ReleaseContents();
-
- // If the overlay 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 = overlay->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(overlay.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(overlay->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) {
- overlay->GetController().PruneAllButActive();
- } else {
- content::WebContents* active_tab = browser_->GetActiveWebContents();
- AddSessionStorageHistogram(extended_enabled_, active_tab, overlay.get());
- overlay->GetController().CopyStateFromAndPrune(
- &active_tab->GetController());
- }
-
- 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(overlay.get(), last_omnibox_text_);
- }
-
- // Save notification source before we release the overlay.
- content::Source<content::WebContents> notification_source(overlay.get());
-
- browser_->CommitInstant(overlay.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_.SetOverlayState(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_ && GetOverlayContents() &&
- 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 overlay.
- 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 overlay.
- 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_overlay_only) {
- LOG_INSTANT_DEBUG_EVENT(this, base::StringPrintf(
- "SetInstantEnabled: instant_enabled=%d, use_local_overlay_only=%d",
- instant_enabled, use_local_overlay_only));
-
- // Non extended mode does not care about |use_local_overlay_only|.
- if (instant_enabled == instant_enabled_ &&
- (!extended_enabled_ ||
- use_local_overlay_only == use_local_overlay_only_)) {
- return;
- }
-
- instant_enabled_ = instant_enabled;
- use_local_overlay_only_ = use_local_overlay_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_.SetOverlayContents(GetOverlayContents());
-}
-
-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_->InstantOverlayFocused();
-#endif
-}
-
-void InstantController::ReloadOverlayIfStale() {
- // The local overlay is never stale.
- if (overlay_ && overlay_->IsUsingLocalOverlay())
- return;
-
- // If the overlay is showing or the omnibox has focus, don't delete the
- // overlay. It will get refreshed the next time the overlay 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::ClearDebugEvents() {
- debug_events_.clear();
-}
-
-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();
-
- // 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_->SetOmniboxBounds(omnibox_bounds_);
- overlay_->InitializeFonts();
- overlay_->GrantChromeSearchAccessFromOrigin(GURL(overlay_->instant_url()));
- } else if (IsContentsFrom(ntp(), contents)) {
- ntp_->SetDisplayInstantResults(instant_enabled_);
- ntp_->SetOmniboxBounds(omnibox_bounds_);
- ntp_->InitializeFonts();
- ntp_->GrantChromeSearchAccessFromOrigin(GURL(ntp_->instant_url()));
- } 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<InstantController>(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<InstantController>(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<InstantSuggestion>& 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_overlay_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 overlay 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::FocusOmnibox(const content::WebContents* contents) {
- if (!extended_enabled_)
- return;
-
- DCHECK(IsContentsFrom(instant_tab(), contents));
- browser_->FocusOmnibox(true);
-}
-
-void InstantController::StartCapturingKeyStrokes(
- const content::WebContents* contents) {
- if (!extended_enabled_)
- return;
-
- DCHECK(IsContentsFrom(instant_tab(), contents));
- browser_->FocusOmnibox(false);
-}
-
-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 overlay 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 (model_.mode().is_default()) {
- // Correct search terms if the user clicked on the committed results page
- // while showing an autocomplete suggestion
- if (instant_tab_ && !last_suggestion_.text.empty() &&
- last_suggestion_.behavior == INSTANT_COMPLETE_NEVER &&
- IsViewInContents(GetViewGainingFocus(view_gaining_focus),
- instant_tab_->contents())) {
- // Commit the omnibox's suggested grey text as if the user had typed it.
- browser_->CommitSuggestedText(true);
-
- // Update the state so that next query from hitting Enter from the
- // omnibox is correct.
- last_omnibox_text_ += last_suggestion_.text;
- last_suggestion_ = InstantSuggestion();
- }
- // If the overlay is not showing at all, recreate it if it's stale.
- ReloadOverlayIfStale();
- MaybeSwitchToRemoteOverlay();
- return;
- }
-
- // The overlay is showing search suggestions. If GetOverlayContents() is NULL,
- // we are in the commit path. Don't do anything.
- if (!GetOverlayContents())
- 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 (IsFullHeight(model_))
- CommitIfPossible(INSTANT_COMMIT_FOCUS_LOST);
- else if (!IsViewInContents(GetViewGainingFocus(view_gaining_focus),
- overlay_->contents()))
- 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 overlay.
- 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 overlays, to
- // prevent it from sending data to the page.
- if (!search_mode_.is_origin_default() && !use_local_overlay_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();
- instant_tab_->SetDisplayInstantResults(instant_enabled_);
- instant_tab_->SetOmniboxBounds(omnibox_bounds_);
- instant_tab_->InitializeFonts();
- instant_tab_->GrantChromeSearchAccessFromOrigin(active_tab->GetURL());
- 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 GetOverlayContents() 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 overlay unnecessarily.
- // Instead, the state will be set correctly after the commit is done.
- if (GetOverlayContents()) {
- model_.SetOverlayState(chrome::search::Mode(), 0, INSTANT_SIZE_PERCENT);
- allow_overlay_to_show_search_suggestions_ = false;
-
- // Send a message asking the overlay 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 &&
- !allow_overlay_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_.SetOverlayState(chrome::search::Mode(), 0, INSTANT_SIZE_PERCENT);
- return;
- }
-
- // If the overlay 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 overlay (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_->IsUsingLocalOverlay() || !instant_enabled_ ||
- reason == INSTANT_SHOWN_CUSTOM_NTP_CONTENT ||
- (search_mode_.is_origin_default() && !IsFullHeight(model_)))
- model_.SetOverlayState(search_mode_, height, units);
- else
- model_.SetOverlayState(search_mode_, 100, INSTANT_SIZE_PERCENT);
-
- // If the overlay is being shown at full height and the omnibox is not
- // focused, commit right away.
- if (IsFullHeight(model_) && omnibox_focus_state_ == OMNIBOX_FOCUS_NONE)
- CommitIfPossible(INSTANT_COMMIT_FOCUS_LOST);
-}
-
-void InstantController::SendPopupBoundsToPage() {
- if (last_popup_bounds_ == popup_bounds_ || !overlay_ ||
- overlay_->is_pointer_down_from_activate())
- return;
-
- last_popup_bounds_ = popup_bounds_;
- gfx::Rect overlay_bounds = browser_->GetInstantBounds();
- gfx::Rect intersection = gfx::IntersectRects(popup_bounds_, overlay_bounds);
-
- // Translate into window coordinates.
- if (!intersection.IsEmpty()) {
- intersection.Offset(-overlay_bounds.origin().x(),
- -overlay_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 overlay (for example, in
- // Mac fullscreen mode, the omnibox is fully enclosed by the overlay 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_overlay_only_) {
- *instant_url = chrome::search::kLocalOmniboxPopupURL;
- return true;
- }
-
- const GURL instant_url_obj = chrome::search::GetInstantURL(profile);
- if (!instant_url_obj.is_valid())
- return false;
-
- *instant_url = instant_url_obj.spec();
-
- if (!ignore_blacklist) {
- std::map<std::string, int>::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<history::TopSites>(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<history::TopSites>(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<MostVisitedItem> 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<MostVisitedItem>& 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<InstantController>(this),
- content::NotificationService::NoDetails());
-}
« chrome/browser/instant/instant_controller.h ('K') | « chrome/browser/instant/instant_controller.h ('k') | chrome/browser/instant/instant_controller_impl.h » ('j') | chrome/browser/instant/instant_page.h » ('J')

Powered by Google App Engine
This is Rietveld 408576698