michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "nsISupports.idl"
michael@0: 
michael@0: /**
michael@0:  * nsIMutable defines an interface to be implemented by objects which
michael@0:  * can be made immutable.
michael@0:  */
michael@0: [scriptable, uuid(321578d0-03c1-4d95-8821-021ac612d18d)]
michael@0: interface nsIMutable : nsISupports
michael@0: {
michael@0:     /**
michael@0:      * Control whether or not this object can be modified.  If the flag is
michael@0:      * false, no modification is allowed.  Once the flag has been set to false,
michael@0:      * it cannot be reset back to true -- attempts to do so throw
michael@0:      * NS_ERROR_INVALID_ARG.
michael@0:      */
michael@0:     attribute boolean mutable;
michael@0: };