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.
5 #include "chrome/browser/policy/policy_service.h"
7 #include "base/values.h"
11 PolicyChangeRegistrar::PolicyChangeRegistrar(PolicyService* policy_service,
12 const PolicyNamespace& ns)
13 : policy_service_(policy_service),
16 PolicyChangeRegistrar::~PolicyChangeRegistrar() {
17 if (!callback_map_.empty())
18 policy_service_->RemoveObserver(ns_.domain, this);
21 void PolicyChangeRegistrar::Observe(const std::string& policy_name,
22 const UpdateCallback& callback) {
23 if (callback_map_.empty())
24 policy_service_->AddObserver(ns_.domain, this);
25 callback_map_[policy_name] = callback;
28 void PolicyChangeRegistrar::OnPolicyUpdated(const PolicyNamespace& ns,
29 const PolicyMap& previous,
30 const PolicyMap& current) {
33 for (CallbackMap::iterator it = callback_map_.begin();
34 it != callback_map_.end(); ++it) {
35 const Value* prev = previous.GetValue(it->first);
36 const Value* cur = current.GetValue(it->first);
37 if (!base::Value::Equals(prev, cur))
38 it->second.Run(prev, cur);