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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 COMPONENTS_SYNC_CORE_WRITE_NODE_H_ | |
| 6 #define COMPONENTS_SYNC_CORE_WRITE_NODE_H_ | |
| 7 | |
| 8 #include <stddef.h> | |
| 9 #include <stdint.h> | |
| 10 | |
| 11 #include <string> | |
| 12 #include <vector> | |
| 13 | |
| 14 #include "base/compiler_specific.h" | |
| 15 #include "base/gtest_prod_util.h" | |
| 16 #include "base/macros.h" | |
| 17 #include "components/sync/base/model_type.h" | |
| 18 #include "components/sync/core/base_node.h" | |
| 19 | |
| 20 namespace sync_pb { | |
| 21 class BookmarkSpecifics; | |
| 22 class EntitySpecifics; | |
| 23 class NigoriSpecifics; | |
| 24 class PasswordSpecificsData; | |
| 25 class TypedUrlSpecifics; | |
| 26 } | |
| 27 | |
| 28 namespace syncer { | |
| 29 | |
| 30 class Cryptographer; | |
| 31 class WriteTransaction; | |
| 32 | |
| 33 namespace syncable { | |
| 34 class Id; | |
| 35 class Entry; | |
| 36 class MutableEntry; | |
| 37 } | |
| 38 | |
| 39 // WriteNode extends BaseNode to add mutation, and wraps | |
| 40 // syncable::MutableEntry. A WriteTransaction is needed to create a WriteNode. | |
| 41 class WriteNode : public BaseNode { | |
| 42 public: | |
| 43 enum InitUniqueByCreationResult { | |
| 44 INIT_SUCCESS, | |
| 45 // The tag passed into this method was empty. | |
| 46 INIT_FAILED_EMPTY_TAG, | |
| 47 // The constructor for a new MutableEntry with the specified data failed. | |
| 48 INIT_FAILED_COULD_NOT_CREATE_ENTRY, | |
| 49 // Setting the predecessor failed | |
| 50 INIT_FAILED_SET_PREDECESSOR, | |
| 51 // Found existing entry, but was unable to decrypt. | |
| 52 INIT_FAILED_DECRYPT_EXISTING_ENTRY, | |
| 53 }; | |
| 54 | |
| 55 // Create a WriteNode using the given transaction. | |
| 56 explicit WriteNode(WriteTransaction* transaction); | |
| 57 ~WriteNode() override; | |
| 58 | |
| 59 // A client must use one (and only one) of the following Init variants to | |
| 60 // populate the node. | |
| 61 | |
| 62 // BaseNode implementation. | |
| 63 InitByLookupResult InitByIdLookup(int64_t id) override; | |
| 64 InitByLookupResult InitByClientTagLookup(ModelType model_type, | |
| 65 const std::string& tag) override; | |
| 66 | |
| 67 // Create a new bookmark node with the specified parent and predecessor. Use | |
| 68 // a NULL |predecessor| to indicate that this is to be the first child. | |
| 69 // |predecessor| must be a child of |new_parent| or NULL. Returns false on | |
| 70 // failure. | |
| 71 bool InitBookmarkByCreation(const BaseNode& parent, | |
| 72 const BaseNode* predecessor); | |
| 73 | |
| 74 // Create nodes using this function if they're unique items that | |
| 75 // you want to fetch using client_tag. Note that the behavior of these | |
| 76 // items is slightly different than that of normal items. | |
| 77 // Most importantly, if it exists locally but is deleted, this function will | |
| 78 // actually undelete it. Otherwise it will reuse the existing node. | |
| 79 // Client unique tagged nodes must NOT be folders. | |
| 80 InitUniqueByCreationResult InitUniqueByCreation( | |
| 81 ModelType model_type, | |
| 82 const BaseNode& parent, | |
| 83 const std::string& client_tag); | |
| 84 | |
| 85 // InitUniqueByCreation overload for model types without hierarchy. | |
| 86 // The parent node isn't stored but is assumed to be the type root folder. | |
| 87 InitUniqueByCreationResult InitUniqueByCreation( | |
| 88 ModelType model_type, | |
| 89 const std::string& client_tag); | |
| 90 | |
| 91 // Looks up the type's root folder. This is usually created by the sync | |
| 92 // server during initial sync, though we do eventually wish to remove it from | |
| 93 // the protocol and have the client "fake it" instead. | |
| 94 InitByLookupResult InitTypeRoot(ModelType type); | |
| 95 | |
| 96 // These Set() functions correspond to the Get() functions of BaseNode. | |
| 97 void SetIsFolder(bool folder); | |
| 98 void SetTitle(const std::string& title); | |
| 99 | |
| 100 // External ID is a client-only field, so setting it doesn't cause the item to | |
| 101 // be synced again. | |
| 102 void SetExternalId(int64_t external_id); | |
| 103 | |
| 104 // Remove this node and its children and sync deletion to server. | |
| 105 void Tombstone(); | |
| 106 | |
| 107 // If the node is known by server, remove it and its children but don't sync | |
| 108 // deletion to server. Do nothing if the node is not known by server so that | |
| 109 // server can have a record of the node. | |
| 110 void Drop(); | |
| 111 | |
| 112 // Set a new parent and position. Position is specified by |predecessor|; if | |
| 113 // it is NULL, the node is moved to the first position. |predecessor| must | |
| 114 // be a child of |new_parent| or NULL. Returns false on failure.. | |
| 115 bool SetPosition(const BaseNode& new_parent, const BaseNode* predecessor); | |
| 116 | |
| 117 // Set the bookmark specifics (url and favicon). | |
| 118 // Should only be called if GetModelType() == BOOKMARK. | |
| 119 void SetBookmarkSpecifics(const sync_pb::BookmarkSpecifics& specifics); | |
| 120 | |
| 121 // Generic set specifics method. Will extract the model type from |specifics|. | |
| 122 void SetEntitySpecifics(const sync_pb::EntitySpecifics& specifics); | |
| 123 | |
| 124 // Resets the EntitySpecifics for this node based on the unencrypted data. | |
| 125 // Will encrypt if necessary. | |
| 126 void ResetFromSpecifics(); | |
| 127 | |
| 128 // TODO(sync): Remove the setters below when the corresponding data | |
| 129 // types are ported to the new sync service API. | |
| 130 | |
| 131 // Set the nigori specifics. | |
| 132 // Should only be called if GetModelType() == NIGORI. | |
| 133 void SetNigoriSpecifics(const sync_pb::NigoriSpecifics& specifics); | |
| 134 | |
| 135 // Set the password specifics. | |
| 136 // Should only be called if GetModelType() == PASSWORD. | |
| 137 void SetPasswordSpecifics(const sync_pb::PasswordSpecificsData& specifics); | |
| 138 | |
| 139 // Set the typed_url specifics (url, title, typed_count, etc). | |
| 140 // Should only be called if GetModelType() == TYPED_URLS. | |
| 141 void SetTypedUrlSpecifics(const sync_pb::TypedUrlSpecifics& specifics); | |
| 142 | |
| 143 // Set the attachment metadata. | |
| 144 void SetAttachmentMetadata( | |
| 145 const sync_pb::AttachmentMetadata& attachment_metadata); | |
| 146 | |
| 147 // Implementation of BaseNode's abstract virtual accessors. | |
| 148 const syncable::Entry* GetEntry() const override; | |
| 149 | |
| 150 const BaseTransaction* GetTransaction() const override; | |
| 151 | |
| 152 syncable::MutableEntry* GetMutableEntryForTest(); | |
| 153 | |
| 154 private: | |
| 155 FRIEND_TEST_ALL_PREFIXES(SyncManagerTest, EncryptBookmarksWithLegacyData); | |
| 156 | |
| 157 void* operator new(size_t size); // Node is meant for stack use only. | |
| 158 | |
| 159 InitUniqueByCreationResult InitUniqueByCreationImpl( | |
| 160 ModelType model_type, | |
| 161 const syncable::Id& parent_id, | |
| 162 const std::string& client_tag); | |
| 163 | |
| 164 // Helper to set the previous node. | |
| 165 bool PutPredecessor(const BaseNode* predecessor) WARN_UNUSED_RESULT; | |
| 166 | |
| 167 // Sets IS_UNSYNCED and SYNCING to ensure this entry is considered in an | |
| 168 // upcoming commit pass. | |
| 169 void MarkForSyncing(); | |
| 170 | |
| 171 // The underlying syncable object which this class wraps. | |
| 172 syncable::MutableEntry* entry_; | |
| 173 | |
| 174 // The sync API transaction that is the parent of this node. | |
| 175 WriteTransaction* transaction_; | |
| 176 | |
| 177 DISALLOW_COPY_AND_ASSIGN(WriteNode); | |
| 178 }; | |
| 179 | |
| 180 } // namespace syncer | |
| 181 | |
| 182 #endif // COMPONENTS_SYNC_CORE_WRITE_NODE_H_ | |
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