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// Copyright (c) 2010 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_CONFIGURATION_POLICY_PROVIDER_H_
#define CHROME_BROWSER_POLICY_CONFIGURATION_POLICY_PROVIDER_H_
#pragma once
#include <vector>
#include "base/basictypes.h"
#include "base/values.h"
#include "chrome/browser/policy/configuration_policy_store.h"
namespace policy {
// A mostly-abstract super class for platform-specific policy providers.
// Platform-specific policy providers (Windows Group Policy, gconf,
// etc.) should implement a subclass of this class.
class ConfigurationPolicyProvider {
public:
// Used for static arrays of policy values that is used to initialize an
// instance of the ConfigurationPolicyProvider.
struct StaticPolicyValueMap {
struct Entry {
ConfigurationPolicyStore::PolicyType policy_type;
Value::ValueType value_type;
const char* name;
};
size_t entry_count;
const Entry* entries;
};
explicit ConfigurationPolicyProvider(const StaticPolicyValueMap& policy_map);
virtual ~ConfigurationPolicyProvider() {}
// Must be implemented by provider subclasses to specify the
// provider-specific policy decisions. The preference service
// invokes this |Provide| method when it needs a policy
// provider to specify its policy choices. In |Provide|,
// the |ConfigurationPolicyProvider| must make calls to the
// |Apply| method of |store| to apply specific policies.
// Returns true if the policy could be provided, otherwise false.
virtual bool Provide(ConfigurationPolicyStore* store) = 0;
// Called by the subclass provider at any time to indicate that the currently
// applied policy is not longer current. A policy refresh will be initiated as
// soon as possible.
virtual void NotifyStoreOfPolicyChange();
protected:
// A structure mapping policies to their implementations by providers.
struct PolicyValueMapEntry {
ConfigurationPolicyStore::PolicyType policy_type;
Value::ValueType value_type;
std::string name;
};
typedef std::vector<PolicyValueMapEntry> PolicyValueMap;
const PolicyValueMap& policy_value_map() const {
return policy_value_map_;
}
private:
// Contains the default mapping from policy values to the actual names.
PolicyValueMap policy_value_map_;
private:
DISALLOW_COPY_AND_ASSIGN(ConfigurationPolicyProvider);
};
} // namespace policy
#endif // CHROME_BROWSER_POLICY_CONFIGURATION_POLICY_PROVIDER_H_
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