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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 "chrome/browser/policy/policy_service.h"
#include "base/values.h"
namespace policy {
PolicyChangeRegistrar::PolicyChangeRegistrar(PolicyService* policy_service,
PolicyDomain domain,
const std::string& component_id)
: policy_service_(policy_service),
domain_(domain),
component_id_(component_id) {}
PolicyChangeRegistrar::~PolicyChangeRegistrar() {
if (!callback_map_.empty())
policy_service_->RemoveObserver(domain_, component_id_, this);
}
void PolicyChangeRegistrar::Observe(const std::string& policy_name,
const UpdateCallback& callback) {
if (callback_map_.empty())
policy_service_->AddObserver(domain_, component_id_, this);
callback_map_[policy_name] = callback;
}
void PolicyChangeRegistrar::OnPolicyUpdated(PolicyDomain domain,
const std::string& component_id,
const PolicyMap& previous,
const PolicyMap& current) {
for (CallbackMap::iterator it = callback_map_.begin();
it != callback_map_.end(); ++it) {
const Value* prev = previous.GetValue(it->first);
const Value* cur = current.GetValue(it->first);
if (!base::Value::Equals(prev, cur))
it->second.Run(prev, cur);
}
}
} // namespace policy
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