chrome/browser/sync/glue/sync_frontend.h

   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.
   4
   5 #ifndef CHROME_BROWSER_SYNC_GLUE_SYNC_FRONTEND_H_
   6 #define CHROME_BROWSER_SYNC_GLUE_SYNC_FRONTEND_H_
   7
   8 #include "base/basictypes.h"
   9 #include "sync/internal_api/public/base/model_type.h"
  10 #include "sync/internal_api/public/sync_encryption_handler.h"
  11 #include "sync/internal_api/public/sync_manager.h"
  12 #include "sync/internal_api/public/util/weak_handle.h"
  13 #include "sync/protocol/sync_protocol_error.h"
  14
  15 namespace syncer {
  16 class DataTypeDebugInfoListener;
  17 class JsBackend;
  18 }  // namespace syncer
  19
  20 namespace sync_pb {
  21 class EncryptedData;
  22 }  // namespace sync_pb
  23
  24 namespace browser_sync {
  25
  26 // SyncFrontend is the interface used by SyncBackendHost to communicate with
  27 // the entity that created it and, presumably, is interested in sync-related
  28 // activity.
  29 // NOTE: All methods will be invoked by a SyncBackendHost on the same thread
  30 // used to create that SyncBackendHost.
  31 class SyncFrontend {
  32  public:
  33   SyncFrontend();
  34   virtual ~SyncFrontend();
  35
  36   // The backend has completed initialization and it is now ready to
  37   // accept and process changes.  If success is false, initialization
  38   // wasn't able to be completed and should be retried.
  39   //
  40   // |js_backend| is what about:sync interacts with; it's different
  41   // from the 'Backend' in 'OnBackendInitialized' (unfortunately).  It
  42   // is initialized only if |success| is true.
  43   virtual void OnBackendInitialized(
  44       const syncer::WeakHandle<syncer::JsBackend>& js_backend,
  45       const syncer::WeakHandle<syncer::DataTypeDebugInfoListener>&
  46           debug_info_listener,
  47       bool success) = 0;
  48
  49   // The backend queried the server recently and received some updates.
  50   virtual void OnSyncCycleCompleted() = 0;
  51
  52   // Configure ran into some kind of error. But it is scheduled to be
  53   // retried.
  54   virtual void OnSyncConfigureRetry() = 0;
  55
  56   // The status of the connection to the sync server has changed.
  57   virtual void OnConnectionStatusChange(
  58       syncer::ConnectionStatus status) = 0;
  59
  60   // We are no longer permitted to communicate with the server. Sync should
  61   // be disabled and state cleaned up at once.
  62   virtual void OnStopSyncingPermanently() = 0;
  63
  64   // The syncer requires a passphrase to decrypt sensitive updates. This is
  65   // called when the first sensitive data type is setup by the user and anytime
  66   // the passphrase is changed by another synced client. |reason| denotes why
  67   // the passphrase was required. |pending_keys| is a copy of the
  68   // cryptographer's pending keys to be passed on to the frontend in order to
  69   // be cached.
  70   virtual void OnPassphraseRequired(
  71       syncer::PassphraseRequiredReason reason,
  72       const sync_pb::EncryptedData& pending_keys) = 0;
  73
  74   // Called when the passphrase provided by the user is
  75   // accepted. After this is called, updates to sensitive nodes are
  76   // encrypted using the accepted passphrase.
  77   virtual void OnPassphraseAccepted() = 0;
  78
  79   // Called when the set of encrypted types or the encrypt everything
  80   // flag has been changed.  Note that encryption isn't complete until
  81   // the OnEncryptionComplete() notification has been sent (see
  82   // below).
  83   //
  84   // |encrypted_types| will always be a superset of
  85   // syncer::Cryptographer::SensitiveTypes().  If |encrypt_everything| is
  86   // true, |encrypted_types| will be the set of all known types.
  87   //
  88   // Until this function is called, observers can assume that the set
  89   // of encrypted types is syncer::Cryptographer::SensitiveTypes() and that
  90   // the encrypt everything flag is false.
  91   virtual void OnEncryptedTypesChanged(
  92       syncer::ModelTypeSet encrypted_types,
  93       bool encrypt_everything) = 0;
  94
  95   // Called after we finish encrypting the current set of encrypted
  96   // types.
  97   virtual void OnEncryptionComplete() = 0;
  98
  99   // Called to perform migration of |types|.
 100   virtual void OnMigrationNeededForTypes(syncer::ModelTypeSet types) = 0;
 101
 102   // Inform the Frontend that new datatypes are available for registration.
 103   virtual void OnExperimentsChanged(
 104       const syncer::Experiments& experiments) = 0;
 105
 106   // Called when the sync cycle returns there is an user actionable error.
 107   virtual void OnActionableError(const syncer::SyncProtocolError& error) = 0;
 108 };
 109
 110 }  // namespace browser_sync
 111
 112 #endif  // CHROME_BROWSER_SYNC_GLUE_SYNC_FRONTEND_H_