| // 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. |
| |
| #ifndef CHROME_BROWSER_ANDROID_MOST_VISITED_SITES_H_ |
| #define CHROME_BROWSER_ANDROID_MOST_VISITED_SITES_H_ |
| |
| #include <jni.h> |
| |
| #include "base/android/scoped_java_ref.h" |
| #include "base/compiler_specific.h" |
| #include "base/memory/weak_ptr.h" |
| #include "base/scoped_observer.h" |
| #include "chrome/browser/profiles/profile.h" |
| #include "chrome/browser/sync/profile_sync_service_observer.h" |
| #include "components/history/core/browser/history_types.h" |
| #include "components/history/core/browser/top_sites_observer.h" |
| #include "components/suggestions/proto/suggestions.pb.h" |
| |
| namespace suggestions { |
| class SuggestionsService; |
| } |
| |
| // Provides the list of most visited sites and their thumbnails to Java. |
| class MostVisitedSites : public ProfileSyncServiceObserver, |
| public history::TopSitesObserver { |
| public: |
| typedef base::Callback< |
| void(base::android::ScopedJavaGlobalRef<jobject>* bitmap, |
| base::android::ScopedJavaGlobalRef<jobject>* j_callback)> |
| LookupSuccessCallback; |
| |
| explicit MostVisitedSites(Profile* profile); |
| void Destroy(JNIEnv* env, jobject obj); |
| void OnLoadingComplete(JNIEnv* env, jobject obj); |
| void SetMostVisitedURLsObserver(JNIEnv* env, |
| jobject obj, |
| jobject j_observer, |
| jint num_sites); |
| void GetURLThumbnail(JNIEnv* env, |
| jobject obj, |
| jstring url, |
| jobject j_callback); |
| void BlacklistUrl(JNIEnv* env, jobject obj, jstring j_url); |
| void RecordOpenedMostVisitedItem(JNIEnv* env, jobject obj, jint index); |
| |
| // ProfileSyncServiceObserver implementation. |
| void OnStateChanged() override; |
| |
| // Registers JNI methods. |
| static bool Register(JNIEnv* env); |
| |
| private: |
| // The source of the Most Visited sites. |
| enum MostVisitedSource { |
| TOP_SITES, |
| SUGGESTIONS_SERVICE |
| }; |
| |
| ~MostVisitedSites() override; |
| void QueryMostVisitedURLs(); |
| |
| // Initialize the query to Top Sites. Called if the SuggestionsService is not |
| // enabled, or if it returns no data. |
| void InitiateTopSitesQuery(); |
| |
| // Callback for when data is available from TopSites. |
| void OnMostVisitedURLsAvailable( |
| base::android::ScopedJavaGlobalRef<jobject>* j_observer, |
| int num_sites, |
| const history::MostVisitedURLList& visited_list); |
| |
| // Callback for when data is available from the SuggestionsService. |
| void OnSuggestionsProfileAvailable( |
| base::android::ScopedJavaGlobalRef<jobject>* j_observer, |
| const suggestions::SuggestionsProfile& suggestions_profile); |
| |
| // Callback for when the local thumbnail lookup is complete. |
| void OnObtainedThumbnail( |
| base::android::ScopedJavaGlobalRef<jobject>* bitmap, |
| base::android::ScopedJavaGlobalRef<jobject>* j_callback); |
| |
| // Requests a server thumbnail from the |suggestions_service|. |
| void GetSuggestionsThumbnailOnUIThread( |
| suggestions::SuggestionsService* suggestions_service, |
| const std::string& url_string, |
| base::android::ScopedJavaGlobalRef<jobject>* j_callback); |
| |
| // Callback from the SuggestionsServer regarding the server thumbnail lookup. |
| void OnSuggestionsThumbnailAvailable( |
| base::android::ScopedJavaGlobalRef<jobject>* j_callback, |
| const GURL& url, |
| const SkBitmap* bitmap); |
| |
| // Records specific UMA histogram metrics. |
| void RecordUMAMetrics(); |
| |
| // history::TopSitesObserver implementation. |
| void TopSitesLoaded(history::TopSites* top_sites) override; |
| void TopSitesChanged(history::TopSites* top_sites) override; |
| |
| // The profile whose most visited sites will be queried. |
| Profile* profile_; |
| |
| // The observer to be notified when the list of most visited sites changes. |
| base::android::ScopedJavaGlobalRef<jobject> observer_; |
| |
| // The maximum number of most visited sites to return. |
| int num_sites_; |
| |
| // Whether the user is in a control group for the purposes of logging. |
| bool is_control_group_; |
| |
| // Keeps track of whether the initial NTP load has been done. |
| bool initial_load_done_; |
| |
| // Counters for UMA metrics. |
| |
| // Number of tiles using a local thumbnail image for this NTP session. |
| int num_local_thumbs_; |
| // Number of tiles for which a server thumbnail is provided. |
| int num_server_thumbs_; |
| // Number of tiles for which no thumbnail is found/specified and a gray tile |
| // is used as the main tile. |
| int num_empty_thumbs_; |
| |
| // Copy of the server suggestions (if enabled). Used for logging. |
| suggestions::SuggestionsProfile server_suggestions_; |
| |
| ScopedObserver<history::TopSites, history::TopSitesObserver> scoped_observer_; |
| |
| MostVisitedSource mv_source_; |
| |
| // For callbacks may be run after destruction. |
| base::WeakPtrFactory<MostVisitedSites> weak_ptr_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(MostVisitedSites); |
| }; |
| |
| #endif // CHROME_BROWSER_ANDROID_MOST_VISITED_SITES_H_ |