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components/enhanced_bookmarks/bookmark_server_service.h

Index: components/enhanced_bookmarks/bookmark_server_service.h
diff --git a/components/enhanced_bookmarks/bookmark_server_service.h b/components/enhanced_bookmarks/bookmark_server_service.h
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+// Copyright 2014 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 COMPONENTS_ENHANCED_BOOKMARKS_BOOKMARK_SERVER_SERVICE_H_
+#define COMPONENTS_ENHANCED_BOOKMARKS_BOOKMARK_SERVER_SERVICE_H_
+
+#include <string>
+#include <vector>
+
+#include "components/bookmarks/browser/bookmark_model_observer.h"
+#include "google_apis/gaia/google_service_auth_error.h"
+#include "google_apis/gaia/oauth2_token_service.h"
+#include "net/url_request/url_fetcher.h"
+#include "net/url_request/url_fetcher_delegate.h"
+#include "net/url_request/url_request_context_getter.h"
+
+class BookmarkModel;
+class ProfileOAuth2TokenService;
+class SigninManagerBase;
+
+namespace enhanced_bookmarks {
+
+class BookmarkServerService;
+
+class BookmarkServerServiceObserver {
+ public:
+  virtual void OnChange(BookmarkServerService* service) = 0;
+
+ protected:
+  virtual ~BookmarkServerServiceObserver() {}
+};
+
+// This abstract class manages the connection to the bookmark servers and
+// stores the maps necessary to translate the response from stars.id to
+// BookmarkNodes. Subclasses just have to provide the right query and the
+// parsing of the response.
+class BookmarkServerService : protected net::URLFetcherDelegate,
+                              protected BookmarkModelObserver,
+                              private OAuth2TokenService::Consumer {
+ public:
+  BookmarkServerService(
+      scoped_refptr<net::URLRequestContextGetter> request_context_getter,
+      ProfileOAuth2TokenService* token_service,
+      SigninManagerBase* signin_manager,
+      BookmarkModel* bookmark_model);
+  virtual ~BookmarkServerService();
+
+  void AddObserver(BookmarkServerServiceObserver* observer);
+  void RemoveObserver(BookmarkServerServiceObserver* observer);
+
+ protected:
+  // Retrieves a bookmark by using its remote id. Returns null if nothing
+  // matches.
+  virtual const BookmarkNode* BookmarkForRemoteId(
+      const std::string& remote_id) const;
+  const std::string RemoteIDForBookmark(const BookmarkNode* bookmark) const;
+
+  // Notifies the observers that something changed.
+  void Notify();
+
+  // Triggers a fetch.
+  void TriggerTokenRequest(bool cancel_previous);
+
+  // Build the query to send to the server. Returns a newly created url_fetcher.
+  virtual net::URLFetcher* CreateFetcher() = 0;
+
+  // Processes the response to the query. Returns true on successful parsing,
+  // false on failure. The implementation can assume that |should_notify| is set
+  // to true by default, if changed to false there will be no OnChange
+  // notification send.
+  virtual bool ProcessResponse(const std::string& response,
+                               bool* should_notify) = 0;
+
+  // If the token can't be retrieved or the query fails this method is called.
+  virtual void CleanAfterFailure() = 0;
+
+  // BookmarkModelObserver methods.
+  virtual void BookmarkModelLoaded(BookmarkModel* model,
+                                   bool ids_reassigned) OVERRIDE;
+  virtual void BookmarkNodeMoved(BookmarkModel* model,
+                                 const BookmarkNode* old_parent,
+                                 int old_index,
+                                 const BookmarkNode* new_parent,
+                                 int new_index) OVERRIDE {};
+  virtual void BookmarkNodeAdded(BookmarkModel* model,
+                                 const BookmarkNode* parent,
+                                 int index) OVERRIDE;
+  virtual void BookmarkNodeRemoved(BookmarkModel* model,
+                                   const BookmarkNode* parent,
+                                   int old_index,
+                                   const BookmarkNode* node,
+                                   const std::set<GURL>& removed_urls) OVERRIDE;
+  virtual void BookmarkNodeChanged(BookmarkModel* model,
+                                   const BookmarkNode* node) OVERRIDE {};
+  virtual void OnWillChangeBookmarkMetaInfo(BookmarkModel* model,
+                                            const BookmarkNode* node) OVERRIDE;
+
+  virtual void BookmarkMetaInfoChanged(BookmarkModel* model,
+                                       const BookmarkNode* node) OVERRIDE;
+
+  virtual void BookmarkNodeFaviconChanged(BookmarkModel* model,
+                                          const BookmarkNode* node) OVERRIDE {};
+  virtual void BookmarkNodeChildrenReordered(BookmarkModel* model,
+                                             const BookmarkNode* node)
+      OVERRIDE {};
+  virtual void BookmarkAllUserNodesRemoved(
+      BookmarkModel* model,
+      const std::set<GURL>& removed_urls) OVERRIDE;
+
+  SigninManagerBase* GetSigninManager();
+
+  // Cached pointer to the bookmarks model.
+  BookmarkModel* bookmark_model_;  // weak
+
+ private:
+  FRIEND_TEST_ALL_PREFIXES(BookmarkServerServiceTest, Cluster);
+  FRIEND_TEST_ALL_PREFIXES(BookmarkServerServiceTest,
+                           ClearClusterMapOnRemoveAllBookmarks);
+
+  // Once the model is ready this method fills in the starsid_to_bookmark_ map.
+  void BuildIdMap();
+
+  // net::URLFetcherDelegate methods. Called when the query is finished.
+  virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE;
+
+  // OAuth2TokenService::Consumer methods.
+  virtual void OnGetTokenSuccess(const OAuth2TokenService::Request* request,
+                                 const std::string& access_token,
+                                 const base::Time& expiration_time) OVERRIDE;
+  virtual void OnGetTokenFailure(const OAuth2TokenService::Request* request,
+                                 const GoogleServiceAuthError& error) OVERRIDE;
+
+  // The observers.
+  ObserverList<BookmarkServerServiceObserver> observers_;
+  // The Auth service is used to get a token for auth with the server.
+  ProfileOAuth2TokenService* token_service_;  // Weak
+  // The request to the token service.
+  scoped_ptr<OAuth2TokenService::Request> token_request_;
+  // To get the currently signed in user.
+  SigninManagerBase* signin_manager_;  // Weak
+  // To have access to the right context getter for the profile.
+  scoped_refptr<net::URLRequestContextGetter> request_context_getter_;
+  // The fetcher used to query the server.
+  scoped_ptr<net::URLFetcher> url_fetcher_;
+  // A map from stars.id to bookmark nodes. With no null entries.
+  std::map<std::string, const BookmarkNode*> starsid_to_bookmark_;
+  // Set to true during the creation of a new bookmark in order to send only the
+  // proper notification.
+  bool inhibit_change_notifications_;
+
+  DISALLOW_COPY_AND_ASSIGN(BookmarkServerService);
+};
+}  // namespace enhanced_bookmarks
+
+#endif  // COMPONENTS_ENHANCED_BOOKMARKS_BOOKMARK_SERVER_SERVICE_H_