1 // Copyright 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef CHROME_BROWSER_SYNC_SESSIONS2_SESSIONS_SYNC_MANAGER_H_
6 #define CHROME_BROWSER_SYNC_SESSIONS2_SESSIONS_SYNC_MANAGER_H_
13 #include "base/basictypes.h"
14 #include "base/gtest_prod_util.h"
15 #include "base/memory/scoped_vector.h"
16 #include "base/time/time.h"
17 #include "chrome/browser/sessions/session_id.h"
18 #include "chrome/browser/sessions/session_types.h"
19 #include "chrome/browser/sync/glue/device_info.h"
20 #include "chrome/browser/sync/glue/favicon_cache.h"
21 #include "chrome/browser/sync/glue/synced_session.h"
22 #include "chrome/browser/sync/glue/synced_session_tracker.h"
23 #include "chrome/browser/sync/sessions2/tab_node_pool2.h"
24 #include "chrome/browser/sync/sync_prefs.h"
25 #include "sync/api/syncable_service.h"
30 class SyncErrorFactory;
35 class SessionSpecifics;
39 } // namespace sync_pb
41 namespace browser_sync {
43 class DataTypeErrorHandler;
44 class SyncedTabDelegate;
45 class SyncedWindowDelegate;
47 // Contains all logic for associating the Chrome sessions model and
48 // the sync sessions model.
49 class SessionsSyncManager : public syncer::SyncableService {
51 // Isolates SessionsSyncManager from having to depend on sync internals.
52 class SyncInternalApiDelegate {
54 // Returns sync's representation of the local device info.
55 // Return value is an empty scoped_ptr if the device info is unavailable.
56 virtual scoped_ptr<DeviceInfo> GetLocalDeviceInfo() const = 0;
58 // Used for creation of the machine tag for this local session.
59 virtual std::string GetCacheGuid() const = 0;
62 SessionsSyncManager(Profile* profile,
63 scoped_ptr<SyncPrefs> sync_prefs,
64 SyncInternalApiDelegate* delegate);
65 virtual ~SessionsSyncManager();
67 // A local navigation event took place that affects the synced session
68 // for this instance of Chrome.
69 void OnLocalTabModified(const SyncedTabDelegate& modified_tab,
70 syncer::SyncError* error);
72 // When a Browser window is opened, we want to know so we can make sure our
73 // bookkeeping of open windows / sessions on this device is up-to-date.
74 void OnBrowserOpened();
76 // A local navigation occurred that triggered updates to favicon data for
77 // each URL in |updated_page_urls|. This is routed through Sessions Sync so
78 // that we can filter (exclude) favicon updates for pages that aren't
79 // currently part of the set of local open tabs, and pass relevant updates
80 // on to FaviconCache for out-of-band favicon syncing.
81 void ForwardRelevantFaviconUpdatesToFaviconCache(
82 const std::set<GURL>& updated_favicon_page_urls);
84 // Returns the tag used to uniquely identify this machine's session in the
86 const std::string& current_machine_tag() const {
87 DCHECK(!current_machine_tag_.empty());
88 return current_machine_tag_;
91 // Builds a list of all foreign sessions. Caller does NOT own SyncedSession
93 // Returns true if foreign sessions were found, false otherwise.
94 bool GetAllForeignSessions(std::vector<const SyncedSession*>* sessions);
96 // If a valid favicon for the page at |url| is found, fills |favicon_png| with
97 // the png-encoded image and returns true. Else, returns false.
98 bool GetSyncedFaviconForPageURL(
99 const std::string& page_url,
100 scoped_refptr<base::RefCountedMemory>* favicon_png) const;
102 // syncer::SyncableService implementation.
103 virtual syncer::SyncMergeResult MergeDataAndStartSyncing(
104 syncer::ModelType type,
105 const syncer::SyncDataList& initial_sync_data,
106 scoped_ptr<syncer::SyncChangeProcessor> sync_processor,
107 scoped_ptr<syncer::SyncErrorFactory> error_handler) OVERRIDE;
108 virtual void StopSyncing(syncer::ModelType type) OVERRIDE;
109 virtual syncer::SyncDataList GetAllSyncData(
110 syncer::ModelType type) const OVERRIDE;
111 virtual syncer::SyncError ProcessSyncChanges(
112 const tracked_objects::Location& from_here,
113 const syncer::SyncChangeList& change_list) OVERRIDE;
115 // Return the virtual URL of the current tab, even if it's pending.
116 static GURL GetCurrentVirtualURL(const SyncedTabDelegate& tab_delegate);
118 // Return the favicon url of the current tab, even if it's pending.
119 static GURL GetCurrentFaviconURL(const SyncedTabDelegate& tab_delegate);
122 // Keep all the links to local tab data in one place. A tab_node_id and tab
123 // must be passed at creation. The tab_node_id is not mutable, although
124 // all other fields are.
127 TabLink(int tab_node_id, const SyncedTabDelegate* tab)
128 : tab_node_id_(tab_node_id),
131 void set_tab(const SyncedTabDelegate* tab) { tab_ = tab; }
132 void set_url(const GURL& url) { url_ = url; }
134 int tab_node_id() const { return tab_node_id_; }
135 const SyncedTabDelegate* tab() const { return tab_; }
136 const GURL& url() const { return url_; }
139 // The id for the sync node this tab is stored in.
140 const int tab_node_id_;
142 // The tab object itself.
143 const SyncedTabDelegate* tab_;
145 // The currently visible url of the tab (used for syncing favicons).
148 DISALLOW_COPY_AND_ASSIGN(TabLink);
151 // Container for accessing local tab data by tab id.
152 typedef std::map<SessionID::id_type, linked_ptr<TabLink> > TabLinksMap;
154 FRIEND_TEST_ALL_PREFIXES(SessionsSyncManagerTest, PopulateSessionHeader);
155 FRIEND_TEST_ALL_PREFIXES(SessionsSyncManagerTest, PopulateSessionWindow);
156 FRIEND_TEST_ALL_PREFIXES(SessionsSyncManagerTest, ValidTabs);
157 FRIEND_TEST_ALL_PREFIXES(SessionsSyncManagerTest, SetSessionTabFromDelegate);
158 FRIEND_TEST_ALL_PREFIXES(SessionsSyncManagerTest, BlockedNavigations);
159 FRIEND_TEST_ALL_PREFIXES(SessionsSyncManagerTest, DeleteForeignSession);
160 FRIEND_TEST_ALL_PREFIXES(SessionsSyncManagerTest,
161 SaveUnassociatedNodesForReassociation);
162 FRIEND_TEST_ALL_PREFIXES(SessionsSyncManagerTest, MergeDeletesCorruptNode);
163 FRIEND_TEST_ALL_PREFIXES(SessionsSyncManagerTest,
164 MergeLocalSessionExistingTabs);
165 FRIEND_TEST_ALL_PREFIXES(SessionsSyncManagerTest,
166 CheckPrerenderedWebContentsSwap);
167 FRIEND_TEST_ALL_PREFIXES(SessionsSyncManagerTest,
168 AssociateWindowsDontReloadTabs);
170 void InitializeCurrentMachineTag();
172 // Load and add window or tab data for a foreign session to our internal
174 void UpdateTrackerWithForeignSession(
175 const sync_pb::SessionSpecifics& specifics,
176 const base::Time& modification_time);
178 // Returns true if |sync_data| contained a header node for the current
179 // machine, false otherwise.
180 bool InitFromSyncModel(const syncer::SyncDataList& sync_data,
181 syncer::SyncChangeList* new_changes);
183 // Helper to construct a deletion SyncChange for a *tab node*.
184 // Caller should check IsValid() on the returned change, as it's possible
185 // this node could not be deleted.
186 syncer::SyncChange TombstoneTab(const sync_pb::SessionSpecifics& tab);
188 // Helper method to load the favicon data from the tab specifics. If the
189 // favicon is valid, stores the favicon data into the favicon cache.
190 void RefreshFaviconVisitTimesFromForeignTab(
191 const sync_pb::SessionTab& tab, const base::Time& modification_time);
193 // Removes a foreign session from our internal bookkeeping.
194 // Returns true if the session was found and deleted, false if no data was
195 // found for that session. This will *NOT* trigger sync deletions. See
196 // DeleteForeignSession below.
197 bool DisassociateForeignSession(const std::string& foreign_session_tag);
199 // Delete a foreign session and all its sync data.
200 // |change_output| *must* be provided as a link to the SyncChange pipeline
201 // that exists in the caller's context. This function will append necessary
202 // changes for processing later.
203 void DeleteForeignSession(const std::string& tag,
204 syncer::SyncChangeList* change_output);
206 // Used to populate a session header from the session specifics header
208 static void PopulateSessionHeaderFromSpecifics(
209 const sync_pb::SessionHeader& header_specifics,
211 SyncedSession* session_header);
213 // Builds |session_window| from the session specifics window
214 // provided and updates the SessionTracker with foreign session data created.
215 void BuildSyncedSessionFromSpecifics(
216 const std::string& session_tag,
217 const sync_pb::SessionWindow& specifics,
219 SessionWindow* session_window);
221 // Resync local window information. Updates the local sessions header node
222 // with the status of open windows and the order of tabs they contain. Should
223 // only be called for changes that affect a window, not a change within a
226 // RELOAD_TABS will additionally cause a resync of all tabs (same as calling
227 // AssociateTabs with a vector of all tabs).
229 // Returns: false if the local session's sync nodes were deleted and
230 // reassociation is necessary, true otherwise.
232 // |change_output| *must* be provided as a link to the SyncChange pipeline
233 // that exists in the caller's context. This function will append necessary
234 // changes for processing later.
235 enum ReloadTabsOption {
239 void AssociateWindows(ReloadTabsOption option,
240 syncer::SyncChangeList* change_output);
242 // Loads and reassociates the local tabs referenced in |tabs|.
243 // |change_output| *must* be provided as a link to the SyncChange pipeline
244 // that exists in the caller's context. This function will append necessary
245 // changes for processing later.
246 void AssociateTab(SyncedTabDelegate* const tab,
247 syncer::SyncChangeList* change_output);
249 // Control which local tabs we're interested in syncing.
250 // Ensures the profile matches sync's profile and that the tab has valid
252 bool ShouldSyncTab(const SyncedTabDelegate& tab) const;
253 static bool ShouldSyncWindow(const SyncedWindowDelegate* window);
255 // Set |session_tab| from |tab_delegate| and |mtime|.
256 static void SetSessionTabFromDelegate(
257 const SyncedTabDelegate& tab_delegate,
259 SessionTab* session_tab);
261 // Populates |specifics| based on the data in |tab_delegate|.
262 void LocalTabDelegateToSpecifics(const SyncedTabDelegate& tab_delegate,
263 sync_pb::SessionSpecifics* specifics);
265 // It's possible that when we associate windows, tabs aren't all loaded
266 // into memory yet (e.g on android) and we don't have a WebContents. In this
267 // case we can't do a full association, but we still want to update tab IDs
268 // as they may have changed after a session was restored. This method
269 // compares new_tab_id against the previously persisted tab ID (from
270 // our TabNodePool) and updates it if it differs.
271 // TODO(tim): Bug 98892. We should be able to test this for this on android
272 // even though we didn't have tests for old API-based sessions sync.
273 void UpdateTabIdIfNecessary(const SyncedTabDelegate& tab_delegate,
274 SessionID::id_type new_tab_id,
275 syncer::SyncChangeList* change_output);
277 // Mapping of current open (local) tabs to their sync identifiers.
278 TabLinksMap local_tab_map_;
280 SyncedSessionTracker session_tracker_;
281 FaviconCache favicon_cache_;
283 // Pool of used/available sync nodes associated with local tabs.
284 TabNodePool2 local_tab_pool_;
286 scoped_ptr<SyncPrefs> sync_prefs_;
288 const Profile* const profile_;
290 scoped_ptr<syncer::SyncErrorFactory> error_handler_;
291 scoped_ptr<syncer::SyncChangeProcessor> sync_processor_;
293 const SyncInternalApiDelegate* const delegate_;
295 // Unique client tag.
296 std::string current_machine_tag_;
298 // User-visible machine name.
299 std::string current_session_name_;
301 // SyncID for the sync node containing all the window information for this
303 int local_session_header_node_id_;
305 DISALLOW_COPY_AND_ASSIGN(SessionsSyncManager);
308 } // namespace browser_sync
310 #endif // CHROME_BROWSER_SYNC_SESSIONS2_SESSIONS_SYNC_MANAGER_H_