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// Copyright 2014 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_EXTENSIONS_API_MESSAGING_NATIVE_MESSAGING_POLICY_HANDLER_H_
#define CHROME_BROWSER_EXTENSIONS_API_MESSAGING_NATIVE_MESSAGING_POLICY_HANDLER_H_

#include "base/macros.h"
#include "base/memory/scoped_ptr.h"
#include "base/values.h"
#include "components/policy/core/browser/configuration_policy_handler.h"

namespace policy {
class PolicyMap;
class PolicyErrorMap;
}  // namespace policy

namespace extensions {

// Implements additional checks for policies that are lists of Native Messaging
// Hosts.
class NativeMessagingHostListPolicyHandler
    : public policy::TypeCheckingPolicyHandler {
 public:
  NativeMessagingHostListPolicyHandler(const char* policy_name,
                                       const char* pref_path,
                                       bool allow_wildcards);
  ~NativeMessagingHostListPolicyHandler() override;

  // ConfigurationPolicyHandler methods:
  bool CheckPolicySettings(const policy::PolicyMap& policies,
                           policy::PolicyErrorMap* errors) override;
  void ApplyPolicySettings(const policy::PolicyMap& policies,
                           PrefValueMap* prefs) override;

 protected:
  const char* pref_path() const;

  // Runs sanity checks on the policy value and returns it in |extension_ids|.
  bool CheckAndGetList(const policy::PolicyMap& policies,
                       policy::PolicyErrorMap* errors,
                       scoped_ptr<base::ListValue>* extension_ids);

 private:
  const char* pref_path_;
  bool allow_wildcards_;

  DISALLOW_COPY_AND_ASSIGN(NativeMessagingHostListPolicyHandler);
};

}  // namespace extensions

#endif  // CHROME_BROWSER_EXTENSIONS_API_MESSAGING_NATIVE_MESSAGING_POLICY_HANDLER_H_