// 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_CONFIGURATION_POLICY_PROVIDER_MAC_H_
#define CHROME_BROWSER_POLICY_CONFIGURATION_POLICY_PROVIDER_MAC_H_
#pragma once

#include <CoreFoundation/CoreFoundation.h>

#include "base/memory/scoped_ptr.h"
#include "chrome/browser/policy/file_based_policy_provider.h"

class MacPreferences;

namespace base {
class Value;
}

namespace policy {

// A provider delegate implementation that reads Mac OS X's managed preferences.
class MacPreferencesPolicyProviderDelegate
    : public FileBasedPolicyProvider::ProviderDelegate {
 public:
  // Takes ownership of |preferences|.
  MacPreferencesPolicyProviderDelegate(
      MacPreferences* preferences,
      const PolicyDefinitionList* policy_list);
  virtual ~MacPreferencesPolicyProviderDelegate();

  // FileBasedPolicyLoader::Delegate implementation.
  virtual scoped_ptr<PolicyBundle>  Load() OVERRIDE;
  virtual base::Time GetLastModification() OVERRIDE;

  // Converts a CFPropertyListRef to the equivalent base::Value. CFDictionary
  // entries whose key is not a CFStringRef are ignored.
  // The returned value is owned by the caller.
  // Returns NULL if an invalid CFType was found, such as CFDate or CFData.
  static base::Value* CreateValueFromProperty(CFPropertyListRef property);

 private:
  // In order to access the application preferences API, the names and values of
  // the policies that are recognized must be known to the loader.
  // Unfortunately, we cannot get the policy list at load time from the
  // provider, because the loader may outlive the provider, so we store our own
  // pointer to the list.
  const PolicyDefinitionList* policy_list_;

  scoped_ptr<MacPreferences> preferences_;

  DISALLOW_COPY_AND_ASSIGN(MacPreferencesPolicyProviderDelegate);
};

// An implementation of |ConfigurationPolicyProvider| using the mechanism
// provided by Mac OS X's managed preferences.
class ConfigurationPolicyProviderMac : public FileBasedPolicyProvider {
 public:
  explicit ConfigurationPolicyProviderMac(
      const PolicyDefinitionList* policy_list);

  // For testing; takes ownership of |preferences|.
  ConfigurationPolicyProviderMac(const PolicyDefinitionList* policy_list,
                                 MacPreferences* preferences);

  DISALLOW_COPY_AND_ASSIGN(ConfigurationPolicyProviderMac);
};

}  // namespace policy

#endif  // CHROME_BROWSER_POLICY_CONFIGURATION_POLICY_PROVIDER_MAC_H_