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      1 // Copyright (c) 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 #include "sync/api/sync_change.h"
      6 
      7 #include <ostream>
      8 
      9 namespace syncer {
     10 
     11 SyncChange::SyncChange() : change_type_(ACTION_INVALID) {
     12 }
     13 
     14 SyncChange::SyncChange(
     15     const tracked_objects::Location& from_here,
     16     SyncChangeType change_type,
     17     const SyncData& sync_data)
     18     : location_(from_here),
     19       change_type_(change_type),
     20       sync_data_(sync_data) {
     21   DCHECK(IsValid());
     22 }
     23 
     24 SyncChange::~SyncChange() {}
     25 
     26 bool SyncChange::IsValid() const {
     27   if (change_type_ == ACTION_INVALID || !sync_data_.IsValid())
     28     return false;
     29 
     30   // Data from the syncer must always have valid specifics.
     31   if (!sync_data_.IsLocal())
     32     return IsRealDataType(sync_data_.GetDataType());
     33 
     34   // Local changes must always have a tag and specify a valid datatype.
     35   if (sync_data_.GetTag().empty() ||
     36       !IsRealDataType(sync_data_.GetDataType())) {
     37     return false;
     38   }
     39 
     40   // Adds and updates must have a non-unique-title.
     41   if (change_type_ == ACTION_ADD || change_type_ == ACTION_UPDATE)
     42     return (!sync_data_.GetTitle().empty());
     43 
     44   return true;
     45 }
     46 
     47 SyncChange::SyncChangeType SyncChange::change_type() const {
     48   return change_type_;
     49 }
     50 
     51 SyncData SyncChange::sync_data() const {
     52   return sync_data_;
     53 }
     54 
     55 tracked_objects::Location SyncChange::location() const {
     56   return location_;
     57 }
     58 
     59 // static
     60 std::string SyncChange::ChangeTypeToString(SyncChangeType change_type) {
     61   switch (change_type) {
     62     case ACTION_INVALID:
     63       return "ACTION_INVALID";
     64     case ACTION_ADD:
     65       return "ACTION_ADD";
     66     case ACTION_UPDATE:
     67       return "ACTION_UPDATE";
     68     case ACTION_DELETE:
     69       return "ACTION_DELETE";
     70     default:
     71       NOTREACHED();
     72   }
     73   return std::string();
     74 }
     75 
     76 std::string SyncChange::ToString() const {
     77   return "{ " + location_.ToString() + ", changeType: " +
     78       ChangeTypeToString(change_type_) + ", syncData: " +
     79       sync_data_.ToString() + "}";
     80 }
     81 
     82 void PrintTo(const SyncChange& sync_change, std::ostream* os) {
     83   *os << sync_change.ToString();
     84 }
     85 
     86 }  // namespace syncer
     87