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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 "components/sync/core_impl/js_mutation_event_observer.h" | |
6 | |
7 #include <stddef.h> | |
8 | |
9 #include "base/location.h" | |
10 #include "base/logging.h" | |
11 #include "base/strings/string_number_conversions.h" | |
12 #include "base/values.h" | |
13 #include "components/sync/js/js_event_details.h" | |
14 #include "components/sync/js/js_event_handler.h" | |
15 | |
16 namespace syncer { | |
17 | |
18 JsMutationEventObserver::JsMutationEventObserver() : weak_ptr_factory_(this) {} | |
19 | |
20 JsMutationEventObserver::~JsMutationEventObserver() { | |
21 DCHECK(CalledOnValidThread()); | |
22 } | |
23 | |
24 base::WeakPtr<JsMutationEventObserver> JsMutationEventObserver::AsWeakPtr() { | |
25 return weak_ptr_factory_.GetWeakPtr(); | |
26 } | |
27 | |
28 void JsMutationEventObserver::InvalidateWeakPtrs() { | |
29 weak_ptr_factory_.InvalidateWeakPtrs(); | |
30 } | |
31 | |
32 void JsMutationEventObserver::SetJsEventHandler( | |
33 const WeakHandle<JsEventHandler>& event_handler) { | |
34 event_handler_ = event_handler; | |
35 } | |
36 | |
37 namespace { | |
38 | |
39 // Max number of changes we attempt to convert to values (to avoid | |
40 // running out of memory). | |
41 const size_t kChangeLimit = 100; | |
42 | |
43 } // namespace | |
44 | |
45 void JsMutationEventObserver::OnChangesApplied( | |
46 ModelType model_type, | |
47 int64_t write_transaction_id, | |
48 const ImmutableChangeRecordList& changes) { | |
49 if (!event_handler_.IsInitialized()) { | |
50 return; | |
51 } | |
52 base::DictionaryValue details; | |
53 details.SetString("modelType", ModelTypeToString(model_type)); | |
54 details.SetString("writeTransactionId", | |
55 base::Int64ToString(write_transaction_id)); | |
56 base::Value* changes_value = NULL; | |
57 const size_t changes_size = changes.Get().size(); | |
58 if (changes_size <= kChangeLimit) { | |
59 base::ListValue* changes_list = new base::ListValue(); | |
60 for (ChangeRecordList::const_iterator it = changes.Get().begin(); | |
61 it != changes.Get().end(); ++it) { | |
62 changes_list->Append(it->ToValue()); | |
63 } | |
64 changes_value = changes_list; | |
65 } else { | |
66 changes_value = | |
67 new base::StringValue(base::SizeTToString(changes_size) + " changes"); | |
68 } | |
69 details.Set("changes", changes_value); | |
70 HandleJsEvent(FROM_HERE, "onChangesApplied", JsEventDetails(&details)); | |
71 } | |
72 | |
73 void JsMutationEventObserver::OnChangesComplete(ModelType model_type) { | |
74 if (!event_handler_.IsInitialized()) { | |
75 return; | |
76 } | |
77 base::DictionaryValue details; | |
78 details.SetString("modelType", ModelTypeToString(model_type)); | |
79 HandleJsEvent(FROM_HERE, "onChangesComplete", JsEventDetails(&details)); | |
80 } | |
81 | |
82 void JsMutationEventObserver::OnTransactionWrite( | |
83 const syncable::ImmutableWriteTransactionInfo& write_transaction_info, | |
84 ModelTypeSet models_with_changes) { | |
85 DCHECK(CalledOnValidThread()); | |
86 if (!event_handler_.IsInitialized()) { | |
87 return; | |
88 } | |
89 base::DictionaryValue details; | |
90 details.Set("writeTransactionInfo", | |
91 write_transaction_info.Get().ToValue(kChangeLimit)); | |
92 details.Set("modelsWithChanges", ModelTypeSetToValue(models_with_changes)); | |
93 HandleJsEvent(FROM_HERE, "onTransactionWrite", JsEventDetails(&details)); | |
94 } | |
95 | |
96 void JsMutationEventObserver::HandleJsEvent( | |
97 const tracked_objects::Location& from_here, | |
98 const std::string& name, | |
99 const JsEventDetails& details) { | |
100 if (!event_handler_.IsInitialized()) { | |
101 NOTREACHED(); | |
102 return; | |
103 } | |
104 event_handler_.Call(from_here, &JsEventHandler::HandleJsEvent, name, details); | |
105 } | |
106 | |
107 } // namespace syncer | |
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