| // Copyright 2013 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/ui/app_list/start_page_service.h" |
| |
| #include <string> |
| |
| #include "base/bind.h" |
| #include "base/command_line.h" |
| #include "base/memory/singleton.h" |
| #include "base/metrics/user_metrics.h" |
| #include "base/prefs/pref_service.h" |
| #include "chrome/browser/browser_process.h" |
| #include "chrome/browser/chrome_notification_types.h" |
| #include "chrome/browser/media/media_stream_infobar_delegate.h" |
| #include "chrome/browser/profiles/profile.h" |
| #include "chrome/browser/search/hotword_service.h" |
| #include "chrome/browser/search/hotword_service_factory.h" |
| #include "chrome/browser/ui/app_list/recommended_apps.h" |
| #include "chrome/browser/ui/app_list/speech_recognizer.h" |
| #include "chrome/browser/ui/app_list/start_page_observer.h" |
| #include "chrome/browser/ui/app_list/start_page_service_factory.h" |
| #include "chrome/common/chrome_switches.h" |
| #include "chrome/common/pref_names.h" |
| #include "chrome/common/url_constants.h" |
| #include "content/public/browser/notification_details.h" |
| #include "content/public/browser/notification_observer.h" |
| #include "content/public/browser/notification_registrar.h" |
| #include "content/public/browser/notification_service.h" |
| #include "content/public/browser/notification_source.h" |
| #include "content/public/browser/web_contents.h" |
| #include "content/public/browser/web_contents_delegate.h" |
| #include "extensions/browser/extension_system_provider.h" |
| #include "extensions/browser/extensions_browser_client.h" |
| #include "extensions/common/extension.h" |
| #include "ui/app_list/app_list_switches.h" |
| |
| using base::RecordAction; |
| using base::UserMetricsAction; |
| |
| namespace app_list { |
| |
| namespace { |
| |
| bool InSpeechRecognition(SpeechRecognitionState state) { |
| return state == SPEECH_RECOGNITION_RECOGNIZING || |
| state == SPEECH_RECOGNITION_IN_SPEECH; |
| } |
| |
| } |
| |
| class StartPageService::ProfileDestroyObserver |
| : public content::NotificationObserver { |
| public: |
| explicit ProfileDestroyObserver(StartPageService* service) |
| : service_(service) { |
| registrar_.Add(this, |
| chrome::NOTIFICATION_PROFILE_DESTROYED, |
| content::Source<Profile>(service_->profile())); |
| } |
| ~ProfileDestroyObserver() override {} |
| |
| private: |
| // content::NotificationObserver |
| void Observe(int type, |
| const content::NotificationSource& source, |
| const content::NotificationDetails& details) override { |
| DCHECK_EQ(chrome::NOTIFICATION_PROFILE_DESTROYED, type); |
| DCHECK_EQ(service_->profile(), content::Source<Profile>(source).ptr()); |
| service_->Shutdown(); |
| } |
| |
| StartPageService* service_; // Owner of this class. |
| content::NotificationRegistrar registrar_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ProfileDestroyObserver); |
| }; |
| |
| class StartPageService::StartPageWebContentsDelegate |
| : public content::WebContentsDelegate { |
| public: |
| StartPageWebContentsDelegate() {} |
| ~StartPageWebContentsDelegate() override {} |
| |
| void RequestMediaAccessPermission( |
| content::WebContents* web_contents, |
| const content::MediaStreamRequest& request, |
| const content::MediaResponseCallback& callback) override { |
| if (MediaStreamInfoBarDelegate::Create(web_contents, request, callback)) |
| NOTREACHED() << "Media stream not allowed for WebUI"; |
| } |
| |
| bool CheckMediaAccessPermission(content::WebContents* web_contents, |
| const GURL& security_origin, |
| content::MediaStreamType type) override { |
| return MediaCaptureDevicesDispatcher::GetInstance() |
| ->CheckMediaAccessPermission(web_contents, security_origin, type); |
| } |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(StartPageWebContentsDelegate); |
| }; |
| |
| // static |
| StartPageService* StartPageService::Get(Profile* profile) { |
| return StartPageServiceFactory::GetForProfile(profile); |
| } |
| |
| StartPageService::StartPageService(Profile* profile) |
| : profile_(profile), |
| profile_destroy_observer_(new ProfileDestroyObserver(this)), |
| recommended_apps_(new RecommendedApps(profile)), |
| state_(app_list::SPEECH_RECOGNITION_OFF), |
| speech_button_toggled_manually_(false), |
| speech_result_obtained_(false), |
| webui_finished_loading_(false), |
| weak_factory_(this) { |
| // If experimental hotwording is enabled, then we're always "ready". |
| // Transitioning into the "hotword recognizing" state is handled by the |
| // hotword extension. |
| if (HotwordService::IsExperimentalHotwordingEnabled()) |
| state_ = app_list::SPEECH_RECOGNITION_READY; |
| |
| if (app_list::switches::IsExperimentalAppListEnabled()) |
| LoadContents(); |
| } |
| |
| StartPageService::~StartPageService() {} |
| |
| void StartPageService::AddObserver(StartPageObserver* observer) { |
| observers_.AddObserver(observer); |
| } |
| |
| void StartPageService::RemoveObserver(StartPageObserver* observer) { |
| observers_.RemoveObserver(observer); |
| } |
| |
| void StartPageService::AppListShown() { |
| if (!contents_) { |
| LoadContents(); |
| } else if (contents_->GetWebUI() && |
| !HotwordService::IsExperimentalHotwordingEnabled()) { |
| // If experimental hotwording is enabled, don't call onAppListShown. |
| // onAppListShown() initializes the web speech API, which is not used with |
| // experimental hotwording. |
| contents_->GetWebUI()->CallJavascriptFunction( |
| "appList.startPage.onAppListShown", |
| base::FundamentalValue(HotwordEnabled())); |
| } |
| } |
| |
| void StartPageService::AppListHidden() { |
| if (contents_->GetWebUI()) { |
| contents_->GetWebUI()->CallJavascriptFunction( |
| "appList.startPage.onAppListHidden"); |
| } |
| if (!app_list::switches::IsExperimentalAppListEnabled()) |
| UnloadContents(); |
| |
| if (HotwordService::IsExperimentalHotwordingEnabled() && |
| speech_recognizer_) { |
| speech_recognizer_->Stop(); |
| } |
| } |
| |
| void StartPageService::ToggleSpeechRecognition() { |
| DCHECK(contents_); |
| speech_button_toggled_manually_ = true; |
| if (!contents_->GetWebUI()) |
| return; |
| |
| if (!webui_finished_loading_) { |
| pending_webui_callbacks_.push_back( |
| base::Bind(&StartPageService::ToggleSpeechRecognition, |
| base::Unretained(this))); |
| return; |
| } |
| |
| if (HotwordService::IsExperimentalHotwordingEnabled()) { |
| if (!speech_recognizer_) { |
| std::string profile_locale; |
| #if defined(OS_CHROMEOS) |
| profile_locale = profile_->GetPrefs()->GetString( |
| prefs::kApplicationLocale); |
| #endif |
| if (profile_locale.empty()) |
| profile_locale = g_browser_process->GetApplicationLocale(); |
| |
| speech_recognizer_.reset( |
| new SpeechRecognizer(weak_factory_.GetWeakPtr(), |
| profile_->GetRequestContext(), |
| profile_locale)); |
| } |
| |
| speech_recognizer_->Start(); |
| return; |
| } |
| |
| contents_->GetWebUI()->CallJavascriptFunction( |
| "appList.startPage.toggleSpeechRecognition"); |
| } |
| |
| bool StartPageService::HotwordEnabled() { |
| if (HotwordService::IsExperimentalHotwordingEnabled()) { |
| auto prefs = profile_->GetPrefs(); |
| return HotwordServiceFactory::IsServiceAvailable(profile_) && |
| (prefs->GetBoolean(prefs::kHotwordSearchEnabled) || |
| prefs->GetBoolean(prefs::kHotwordAlwaysOnSearchEnabled)); |
| } |
| #if defined(OS_CHROMEOS) |
| return HotwordServiceFactory::IsServiceAvailable(profile_) && |
| profile_->GetPrefs()->GetBoolean(prefs::kHotwordSearchEnabled); |
| #else |
| return false; |
| #endif |
| } |
| |
| content::WebContents* StartPageService::GetStartPageContents() { |
| return app_list::switches::IsExperimentalAppListEnabled() ? contents_.get() |
| : NULL; |
| } |
| |
| content::WebContents* StartPageService::GetSpeechRecognitionContents() { |
| if (app_list::switches::IsVoiceSearchEnabled()) { |
| if (!contents_) |
| LoadContents(); |
| return contents_.get(); |
| } |
| return NULL; |
| } |
| |
| void StartPageService::OnSpeechResult( |
| const base::string16& query, bool is_final) { |
| if (is_final) { |
| speech_result_obtained_ = true; |
| RecordAction(UserMetricsAction("AppList_SearchedBySpeech")); |
| } |
| FOR_EACH_OBSERVER(StartPageObserver, |
| observers_, |
| OnSpeechResult(query, is_final)); |
| } |
| |
| void StartPageService::OnSpeechSoundLevelChanged(int16_t level) { |
| FOR_EACH_OBSERVER(StartPageObserver, |
| observers_, |
| OnSpeechSoundLevelChanged(level)); |
| } |
| |
| void StartPageService::OnSpeechRecognitionStateChanged( |
| SpeechRecognitionState new_state) { |
| |
| if (HotwordService::IsExperimentalHotwordingEnabled() && |
| new_state == SPEECH_RECOGNITION_READY && |
| speech_recognizer_) { |
| speech_recognizer_->Stop(); |
| } |
| |
| if (!InSpeechRecognition(state_) && InSpeechRecognition(new_state)) { |
| if (!speech_button_toggled_manually_ && |
| state_ == SPEECH_RECOGNITION_HOTWORD_LISTENING) { |
| RecordAction(UserMetricsAction("AppList_HotwordRecognized")); |
| } else { |
| RecordAction(UserMetricsAction("AppList_VoiceSearchStartedManually")); |
| } |
| } else if (InSpeechRecognition(state_) && !InSpeechRecognition(new_state) && |
| !speech_result_obtained_) { |
| RecordAction(UserMetricsAction("AppList_VoiceSearchCanceled")); |
| } |
| speech_button_toggled_manually_ = false; |
| speech_result_obtained_ = false; |
| state_ = new_state; |
| FOR_EACH_OBSERVER(StartPageObserver, |
| observers_, |
| OnSpeechRecognitionStateChanged(new_state)); |
| } |
| |
| content::WebContents* StartPageService::GetSpeechContents() { |
| return GetSpeechRecognitionContents(); |
| } |
| |
| void StartPageService::Shutdown() { |
| UnloadContents(); |
| } |
| |
| void StartPageService::WebUILoaded() { |
| // There's a race condition between the WebUI loading, and calling its JS |
| // functions. Specifically, calling LoadContents() doesn't mean that the page |
| // has loaded, but several code paths make this assumption. This function |
| // allows us to defer calling JS functions until after the page has finished |
| // loading. |
| webui_finished_loading_ = true; |
| for (const auto& cb : pending_webui_callbacks_) |
| cb.Run(); |
| pending_webui_callbacks_.clear(); |
| } |
| |
| void StartPageService::LoadContents() { |
| contents_.reset(content::WebContents::Create( |
| content::WebContents::CreateParams(profile_))); |
| contents_delegate_.reset(new StartPageWebContentsDelegate()); |
| contents_->SetDelegate(contents_delegate_.get()); |
| |
| GURL url(chrome::kChromeUIAppListStartPageURL); |
| CommandLine* command_line = CommandLine::ForCurrentProcess(); |
| if (command_line->HasSwitch(::switches::kAppListStartPageURL)) { |
| url = GURL( |
| command_line->GetSwitchValueASCII(::switches::kAppListStartPageURL)); |
| } |
| |
| contents_->GetController().LoadURL( |
| url, |
| content::Referrer(), |
| ui::PAGE_TRANSITION_AUTO_TOPLEVEL, |
| std::string()); |
| } |
| |
| void StartPageService::UnloadContents() { |
| contents_.reset(); |
| webui_finished_loading_ = false; |
| } |
| |
| } // namespace app_list |