| // 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. |
| |
| #ifndef CHROME_BROWSER_POLICY_POLICY_SERVICE_IMPL_H_ |
| #define CHROME_BROWSER_POLICY_POLICY_SERVICE_IMPL_H_ |
| |
| #include <map> |
| #include <set> |
| #include <string> |
| #include <vector> |
| |
| #include "base/basictypes.h" |
| #include "base/memory/weak_ptr.h" |
| #include "base/observer_list.h" |
| #include "chrome/browser/policy/configuration_policy_provider.h" |
| #include "chrome/browser/policy/policy_bundle.h" |
| #include "chrome/browser/policy/policy_service.h" |
| |
| namespace policy { |
| |
| class PolicyMap; |
| |
| class PolicyServiceImpl : public PolicyService, |
| public ConfigurationPolicyProvider::Observer { |
| public: |
| typedef std::vector<ConfigurationPolicyProvider*> Providers; |
| |
| // The PolicyServiceImpl will merge policies from |providers|. |providers| |
| // must be sorted in decreasing order of priority; the first provider will |
| // have the highest priority. The PolicyServiceImpl does not take ownership of |
| // the providers, and they must outlive the PolicyServiceImpl. |
| explicit PolicyServiceImpl(const Providers& providers); |
| virtual ~PolicyServiceImpl(); |
| |
| // PolicyService overrides: |
| virtual void AddObserver(PolicyDomain domain, |
| PolicyService::Observer* observer) OVERRIDE; |
| virtual void RemoveObserver(PolicyDomain domain, |
| PolicyService::Observer* observer) OVERRIDE; |
| virtual void RegisterPolicyDomain( |
| scoped_refptr<const PolicyDomainDescriptor> descriptor) OVERRIDE; |
| virtual const PolicyMap& GetPolicies( |
| const PolicyNamespace& ns) const OVERRIDE; |
| virtual scoped_refptr<const PolicyDomainDescriptor> GetPolicyDomainDescriptor( |
| PolicyDomain domain) const OVERRIDE; |
| virtual bool IsInitializationComplete(PolicyDomain domain) const OVERRIDE; |
| virtual void RefreshPolicies(const base::Closure& callback) OVERRIDE; |
| |
| private: |
| typedef ObserverList<PolicyService::Observer, true> Observers; |
| typedef std::map<PolicyDomain, Observers*> ObserverMap; |
| |
| // ConfigurationPolicyProvider::Observer overrides: |
| virtual void OnUpdatePolicy(ConfigurationPolicyProvider* provider) OVERRIDE; |
| |
| // Posts a task to notify observers of |ns| that its policies have changed, |
| // passing along the |previous| and the |current| policies. |
| void NotifyNamespaceUpdated(const PolicyNamespace& ns, |
| const PolicyMap& previous, |
| const PolicyMap& current); |
| |
| // Combines the policies from all the providers, and notifies the observers |
| // of namespaces whose policies have been modified. |
| void MergeAndTriggerUpdates(); |
| |
| // Checks if all providers are initialized, and notifies the observers |
| // if the service just became initialized. |
| void CheckInitializationComplete(); |
| |
| // Invokes all the refresh callbacks if there are no more refreshes pending. |
| void CheckRefreshComplete(); |
| |
| // The providers passed in the constructor, in order of decreasing priority. |
| Providers providers_; |
| |
| // Maps each policy namespace to its current policies. |
| PolicyBundle policy_bundle_; |
| |
| // Maps each policy domain to its current descriptor. |
| scoped_refptr<const PolicyDomainDescriptor> |
| domain_descriptors_[POLICY_DOMAIN_SIZE]; |
| |
| // Maps each policy domain to its observer list. |
| ObserverMap observers_; |
| |
| // True if all the providers are initialized for the indexed policy domain. |
| bool initialization_complete_[POLICY_DOMAIN_SIZE]; |
| |
| // Set of providers that have a pending update that was triggered by a |
| // call to RefreshPolicies(). |
| std::set<ConfigurationPolicyProvider*> refresh_pending_; |
| |
| // List of callbacks to invoke once all providers refresh after a |
| // RefreshPolicies() call. |
| std::vector<base::Closure> refresh_callbacks_; |
| |
| // Used to create tasks to delay new policy updates while we may be already |
| // processing previous policy updates. |
| base::WeakPtrFactory<PolicyServiceImpl> update_task_ptr_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(PolicyServiceImpl); |
| }; |
| |
| } // namespace policy |
| |
| #endif // CHROME_BROWSER_POLICY_POLICY_SERVICE_IMPL_H_ |