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/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

/* nsIVariant based Property Bag support. */

#include "nsIPropertyBag.idl"

[scriptable, uuid(625cfd1e-da1e-4417-9ee9-dbc8e0b3fd79)]
interface nsIPropertyBag2 : nsIPropertyBag
{
  // Accessing a property as a different type may attempt conversion to the
  // requested value

  int32_t     getPropertyAsInt32       (in AString prop);
  uint32_t    getPropertyAsUint32      (in AString prop);
  int64_t     getPropertyAsInt64       (in AString prop);
  uint64_t    getPropertyAsUint64      (in AString prop);
  double      getPropertyAsDouble      (in AString prop);
  AString     getPropertyAsAString     (in AString prop);
  ACString    getPropertyAsACString    (in AString prop);
  AUTF8String getPropertyAsAUTF8String (in AString prop);
  boolean     getPropertyAsBool        (in AString prop);

  /**
   * This method returns null if the value exists, but is null.
   */
  void        getPropertyAsInterface   (in AString prop,
                                        in nsIIDRef iid,
                                        [iid_is(iid), retval] out nsQIResult result);

  /**
   * This method returns null if the value does not exist,
   * or exists but is null.
   */
  nsIVariant  get                      (in AString prop);
 
  /**
   * Check for the existence of a key.
   */
  boolean     hasKey                   (in AString prop);
};