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1 // Copyright 2012 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 SYNC_SYNCABLE_MUTABLE_ENTRY_H_
6 #define SYNC_SYNCABLE_MUTABLE_ENTRY_H_
7 
8 #include "sync/base/sync_export.h"
9 #include "sync/internal_api/public/base/model_type.h"
10 #include "sync/syncable/entry.h"
11 #include "sync/syncable/metahandle_set.h"
12 #include "sync/syncable/model_neutral_mutable_entry.h"
13 
14 namespace syncer {
15 class WriteNode;
16 
17 namespace syncable {
18 
19 enum Create {
20   CREATE
21 };
22 
23 class WriteTransaction;
24 
25 // A mutable meta entry.  Changes get committed to the database when the
26 // WriteTransaction is destroyed.
27 class SYNC_EXPORT_PRIVATE MutableEntry : public ModelNeutralMutableEntry {
28   void Init(WriteTransaction* trans, ModelType model_type,
29             const Id& parent_id, const std::string& name);
30 
31  public:
32   MutableEntry(WriteTransaction* trans, CreateNewUpdateItem, const Id& id);
33   MutableEntry(WriteTransaction* trans, Create, ModelType model_type,
34                const Id& parent_id, const std::string& name);
35   MutableEntry(WriteTransaction* trans, GetByHandle, int64);
36   MutableEntry(WriteTransaction* trans, GetById, const Id&);
37   MutableEntry(WriteTransaction* trans, GetByClientTag, const std::string& tag);
38   MutableEntry(WriteTransaction* trans, GetByServerTag, const std::string& tag);
39 
write_transaction()40   inline WriteTransaction* write_transaction() const {
41     return write_transaction_;
42   }
43 
44   // Model-changing setters.  These setters make user-visible changes that will
45   // need to be communicated either to the local model or the sync server.
46   void PutLocalExternalId(int64 value);
47   void PutMtime(base::Time value);
48   void PutCtime(base::Time value);
49   void PutParentId(const Id& value);
50   void PutIsDir(bool value);
51   void PutIsDel(bool value);
52   void PutNonUniqueName(const std::string& value);
53   void PutSpecifics(const sync_pb::EntitySpecifics& value);
54   void PutUniquePosition(const UniquePosition& value);
55 
56   // Sets the position of this item, and updates the entry kernels of the
57   // adjacent siblings so that list invariants are maintained.  Returns false
58   // and fails if |predecessor_id| does not identify a sibling.  Pass the root
59   // ID to put the node in first position.
60   bool PutPredecessor(const Id& predecessor_id);
61 
62  private:
63   // Kind of redundant. We should reduce the number of pointers
64   // floating around if at all possible. Could we store this in Directory?
65   // Scope: Set on construction, never changed after that.
66   WriteTransaction* const write_transaction_;
67 
68   DISALLOW_COPY_AND_ASSIGN(MutableEntry);
69 };
70 
71 // This function sets only the flags needed to get this entry to sync.
72 bool MarkForSyncing(syncable::MutableEntry* e);
73 
74 }  // namespace syncable
75 }  // namespace syncer
76 
77 #endif  // SYNC_SYNCABLE_MUTABLE_ENTRY_H_
78