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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/sync/engine_impl/js_mutation_event_observer.h"
#include <stddef.h>
#include "base/location.h"
#include "base/logging.h"
#include "base/strings/string_number_conversions.h"
#include "base/values.h"
#include "components/sync/js/js_event_details.h"
#include "components/sync/js/js_event_handler.h"
namespace syncer {
JsMutationEventObserver::JsMutationEventObserver() : weak_ptr_factory_(this) {}
JsMutationEventObserver::~JsMutationEventObserver() {
DCHECK(CalledOnValidThread());
}
base::WeakPtr<JsMutationEventObserver> JsMutationEventObserver::AsWeakPtr() {
return weak_ptr_factory_.GetWeakPtr();
}
void JsMutationEventObserver::InvalidateWeakPtrs() {
weak_ptr_factory_.InvalidateWeakPtrs();
}
void JsMutationEventObserver::SetJsEventHandler(
const WeakHandle<JsEventHandler>& event_handler) {
event_handler_ = event_handler;
}
namespace {
// Max number of changes we attempt to convert to values (to avoid
// running out of memory).
const size_t kChangeLimit = 100;
} // namespace
void JsMutationEventObserver::OnChangesApplied(
ModelType model_type,
int64_t write_transaction_id,
const ImmutableChangeRecordList& changes) {
if (!event_handler_.IsInitialized()) {
return;
}
base::DictionaryValue details;
details.SetString("modelType", ModelTypeToString(model_type));
details.SetString("writeTransactionId",
base::Int64ToString(write_transaction_id));
base::Value* changes_value = nullptr;
const size_t changes_size = changes.Get().size();
if (changes_size <= kChangeLimit) {
base::ListValue* changes_list = new base::ListValue();
for (ChangeRecordList::const_iterator it = changes.Get().begin();
it != changes.Get().end(); ++it) {
changes_list->Append(it->ToValue());
}
changes_value = changes_list;
} else {
changes_value =
new base::StringValue(base::SizeTToString(changes_size) + " changes");
}
details.Set("changes", changes_value);
HandleJsEvent(FROM_HERE, "onChangesApplied", JsEventDetails(&details));
}
void JsMutationEventObserver::OnChangesComplete(ModelType model_type) {
if (!event_handler_.IsInitialized()) {
return;
}
base::DictionaryValue details;
details.SetString("modelType", ModelTypeToString(model_type));
HandleJsEvent(FROM_HERE, "onChangesComplete", JsEventDetails(&details));
}
void JsMutationEventObserver::OnTransactionWrite(
const syncable::ImmutableWriteTransactionInfo& write_transaction_info,
ModelTypeSet models_with_changes) {
DCHECK(CalledOnValidThread());
if (!event_handler_.IsInitialized()) {
return;
}
base::DictionaryValue details;
details.Set("writeTransactionInfo",
write_transaction_info.Get().ToValue(kChangeLimit));
details.Set("modelsWithChanges", ModelTypeSetToValue(models_with_changes));
HandleJsEvent(FROM_HERE, "onTransactionWrite", JsEventDetails(&details));
}
void JsMutationEventObserver::HandleJsEvent(
const tracked_objects::Location& from_here,
const std::string& name,
const JsEventDetails& details) {
if (!event_handler_.IsInitialized()) {
NOTREACHED();
return;
}
event_handler_.Call(from_here, &JsEventHandler::HandleJsEvent, name, details);
}
} // namespace syncer
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