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 #ifndef CHROME_BROWSER_POLICY_POLICY_SERVICE_IMPL_H_
6 #define CHROME_BROWSER_POLICY_POLICY_SERVICE_IMPL_H_
13 #include "base/basictypes.h"
14 #include "base/memory/weak_ptr.h"
15 #include "base/observer_list.h"
16 #include "chrome/browser/policy/configuration_policy_provider.h"
17 #include "chrome/browser/policy/policy_bundle.h"
18 #include "chrome/browser/policy/policy_service.h"
24 class PolicyServiceImpl : public PolicyService,
25 public ConfigurationPolicyProvider::Observer {
27 typedef std::vector<ConfigurationPolicyProvider*> Providers;
29 // The PolicyServiceImpl will merge policies from |providers|. |providers|
30 // must be sorted in decreasing order of priority; the first provider will
31 // have the highest priority. The PolicyServiceImpl does not take ownership of
32 // the providers, and they must outlive the PolicyServiceImpl.
33 explicit PolicyServiceImpl(const Providers& providers);
34 virtual ~PolicyServiceImpl();
36 // PolicyService overrides:
37 virtual void AddObserver(PolicyDomain domain,
38 PolicyService::Observer* observer) OVERRIDE;
39 virtual void RemoveObserver(PolicyDomain domain,
40 PolicyService::Observer* observer) OVERRIDE;
41 virtual void RegisterPolicyDomain(
42 scoped_refptr<const PolicyDomainDescriptor> descriptor) OVERRIDE;
43 virtual const PolicyMap& GetPolicies(
44 const PolicyNamespace& ns) const OVERRIDE;
45 virtual scoped_refptr<const PolicyDomainDescriptor> GetPolicyDomainDescriptor(
46 PolicyDomain domain) const OVERRIDE;
47 virtual bool IsInitializationComplete(PolicyDomain domain) const OVERRIDE;
48 virtual void RefreshPolicies(const base::Closure& callback) OVERRIDE;
51 typedef ObserverList<PolicyService::Observer, true> Observers;
52 typedef std::map<PolicyDomain, Observers*> ObserverMap;
54 // ConfigurationPolicyProvider::Observer overrides:
55 virtual void OnUpdatePolicy(ConfigurationPolicyProvider* provider) OVERRIDE;
57 // Posts a task to notify observers of |ns| that its policies have changed,
58 // passing along the |previous| and the |current| policies.
59 void NotifyNamespaceUpdated(const PolicyNamespace& ns,
60 const PolicyMap& previous,
61 const PolicyMap& current);
63 // Combines the policies from all the providers, and notifies the observers
64 // of namespaces whose policies have been modified.
65 void MergeAndTriggerUpdates();
67 // Checks if all providers are initialized, and notifies the observers
68 // if the service just became initialized.
69 void CheckInitializationComplete();
71 // Invokes all the refresh callbacks if there are no more refreshes pending.
72 void CheckRefreshComplete();
74 // The providers passed in the constructor, in order of decreasing priority.
77 // Maps each policy namespace to its current policies.
78 PolicyBundle policy_bundle_;
80 // Maps each policy domain to its current descriptor.
81 scoped_refptr<const PolicyDomainDescriptor>
82 domain_descriptors_[POLICY_DOMAIN_SIZE];
84 // Maps each policy domain to its observer list.
85 ObserverMap observers_;
87 // True if all the providers are initialized for the indexed policy domain.
88 bool initialization_complete_[POLICY_DOMAIN_SIZE];
90 // Set of providers that have a pending update that was triggered by a
91 // call to RefreshPolicies().
92 std::set<ConfigurationPolicyProvider*> refresh_pending_;
94 // List of callbacks to invoke once all providers refresh after a
95 // RefreshPolicies() call.
96 std::vector<base::Closure> refresh_callbacks_;
98 // Used to create tasks to delay new policy updates while we may be already
99 // processing previous policy updates.
100 base::WeakPtrFactory<PolicyServiceImpl> update_task_ptr_factory_;
102 DISALLOW_COPY_AND_ASSIGN(PolicyServiceImpl);
105 } // namespace policy
107 #endif // CHROME_BROWSER_POLICY_POLICY_SERVICE_IMPL_H_