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// Copyright (c) 2010 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/omnibox_search_hint.h"
#include "app/l10n_util.h"
#include "app/resource_bundle.h"
#include "base/command_line.h"
#include "base/metrics/histogram.h"
#include "base/task.h"
#include "chrome/browser/autocomplete/autocomplete.h"
#include "chrome/browser/autocomplete/autocomplete_edit.h"
#include "chrome/browser/autocomplete/autocomplete_edit_view.h"
#include "chrome/browser/autocomplete/autocomplete_match.h"
#include "chrome/browser/browser_list.h"
#include "chrome/browser/browser_window.h"
#include "chrome/browser/prefs/pref_service.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/search_engines/template_url.h"
#include "chrome/browser/search_engines/template_url_model.h"
#include "chrome/browser/tab_contents/infobar_delegate.h"
#include "chrome/browser/tab_contents/tab_contents.h"
#include "chrome/browser/ui/omnibox/location_bar.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/notification_details.h"
#include "chrome/common/notification_source.h"
#include "chrome/common/notification_type.h"
#include "chrome/common/pref_names.h"
#include "grit/generated_resources.h"
#include "grit/theme_resources.h"
// The URLs of search engines for which we want to trigger the infobar.
const char* kSearchEngineURLs[] = {
"http://www.google.com/",
"http://www.yahoo.com/",
"http://www.bing.com/",
"http://www.altavista.com/",
"http://www.ask.com/",
"http://www.wolframalpha.com/",
};
class HintInfoBar : public ConfirmInfoBarDelegate {
public:
explicit HintInfoBar(OmniboxSearchHint* omnibox_hint)
: ConfirmInfoBarDelegate(omnibox_hint->tab()),
omnibox_hint_(omnibox_hint),
action_taken_(false),
should_expire_(false),
ALLOW_THIS_IN_INITIALIZER_LIST(method_factory_(this)) {
// We want the info-bar to stick-around for few seconds and then be hidden
// on the next navigation after that.
MessageLoop::current()->PostDelayedTask(FROM_HERE,
method_factory_.NewRunnableMethod(&HintInfoBar::Expire),
8000); // 8 seconds.
}
virtual bool ShouldExpire(
const NavigationController::LoadCommittedDetails& details) const {
return should_expire_;
}
// Overridden from ConfirmInfoBarDelegate:
virtual void InfoBarClosed() {
if (!action_taken_)
UMA_HISTOGRAM_COUNTS("OmniboxSearchHint.Ignored", 1);
delete this;
}
virtual void InfoBarDismissed() {
action_taken_ = true;
UMA_HISTOGRAM_COUNTS("OmniboxSearchHint.Closed", 1);
// User closed the infobar, let's not bug him again with this in the future.
omnibox_hint_->DisableHint();
}
virtual string16 GetMessageText() const {
return l10n_util::GetStringUTF16(IDS_OMNIBOX_SEARCH_HINT_INFOBAR_TEXT);
}
virtual SkBitmap* GetIcon() const {
return ResourceBundle::GetSharedInstance().GetBitmapNamed(
IDR_INFOBAR_QUESTION_MARK);
}
virtual int GetButtons() const {
return BUTTON_OK;
}
virtual string16 GetButtonLabel(InfoBarButton button) const {
return l10n_util::GetStringUTF16(
IDS_OMNIBOX_SEARCH_HINT_INFOBAR_BUTTON_LABEL);
}
virtual Type GetInfoBarType() { return PAGE_ACTION_TYPE; }
virtual bool Accept() {
action_taken_ = true;
UMA_HISTOGRAM_COUNTS("OmniboxSearchHint.ShowMe", 1);
omnibox_hint_->DisableHint();
omnibox_hint_->ShowEnteringQuery();
return true;
}
void Expire() {
should_expire_ = true;
}
private:
// The omnibox hint that shows us.
OmniboxSearchHint* omnibox_hint_;
// Whether the user clicked one of the buttons.
bool action_taken_;
// Whether the info-bar should be dismissed on the next navigation.
bool should_expire_;
// Used to delay the expiration of the info-bar.
ScopedRunnableMethodFactory<HintInfoBar> method_factory_;
DISALLOW_COPY_AND_ASSIGN(HintInfoBar);
};
OmniboxSearchHint::OmniboxSearchHint(TabContents* tab) : tab_(tab) {
NavigationController* controller = &(tab->controller());
notification_registrar_.Add(this,
NotificationType::NAV_ENTRY_COMMITTED,
Source<NavigationController>(controller));
// Fill the search_engine_urls_ map, used for faster look-up (overkill?).
for (size_t i = 0;
i < sizeof(kSearchEngineURLs) / sizeof(kSearchEngineURLs[0]); ++i) {
search_engine_urls_[kSearchEngineURLs[i]] = 1;
}
// Listen for omnibox to figure-out when the user searches from the omnibox.
notification_registrar_.Add(this,
NotificationType::OMNIBOX_OPENED_URL,
Source<Profile>(tab->profile()));
}
OmniboxSearchHint::~OmniboxSearchHint() {
}
void OmniboxSearchHint::Observe(NotificationType type,
const NotificationSource& source,
const NotificationDetails& details) {
if (type == NotificationType::NAV_ENTRY_COMMITTED) {
NavigationEntry* entry = tab_->controller().GetActiveEntry();
if (search_engine_urls_.find(entry->url().spec()) ==
search_engine_urls_.end()) {
// The search engine is not in our white-list, bail.
return;
}
const TemplateURL* const default_provider =
tab_->profile()->GetTemplateURLModel()->GetDefaultSearchProvider();
if (!default_provider)
return;
const TemplateURLRef* const search_url = default_provider->url();
if (search_url->GetHost() == entry->url().host())
ShowInfoBar();
} else if (type == NotificationType::OMNIBOX_OPENED_URL) {
AutocompleteLog* log = Details<AutocompleteLog>(details).ptr();
AutocompleteMatch::Type type =
log->result.match_at(log->selected_index).type;
if (type == AutocompleteMatch::SEARCH_WHAT_YOU_TYPED ||
type == AutocompleteMatch::SEARCH_HISTORY ||
type == AutocompleteMatch::SEARCH_SUGGEST) {
// The user performed a search from the omnibox, don't show the infobar
// again.
DisableHint();
}
}
}
void OmniboxSearchHint::ShowInfoBar() {
tab_->AddInfoBar(new HintInfoBar(this));
}
void OmniboxSearchHint::ShowEnteringQuery() {
LocationBar* location_bar = BrowserList::GetLastActive()->window()->
GetLocationBar();
AutocompleteEditView* edit_view = location_bar->location_entry();
location_bar->FocusLocation(true);
edit_view->SetUserText(
l10n_util::GetString(IDS_OMNIBOX_SEARCH_HINT_OMNIBOX_TEXT));
edit_view->SelectAll(false);
// Entering text in the autocomplete edit view triggers the suggestion popup
// that we don't want to show in this case.
edit_view->ClosePopup();
}
void OmniboxSearchHint::DisableHint() {
// The NAV_ENTRY_COMMITTED notification was needed to show the infobar, the
// OMNIBOX_OPENED_URL notification was there to set the kShowOmniboxSearchHint
// prefs to false, none of them are needed anymore.
notification_registrar_.RemoveAll();
tab_->profile()->GetPrefs()->SetBoolean(prefs::kShowOmniboxSearchHint,
false);
}
// static
bool OmniboxSearchHint::IsEnabled(Profile* profile) {
// The infobar can only be shown if the correct switch has been provided and
// the user did not dismiss the infobar before.
return profile->GetPrefs()->GetBoolean(prefs::kShowOmniboxSearchHint) &&
CommandLine::ForCurrentProcess()->HasSwitch(
switches::kSearchInOmniboxHint);
}
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