73 lines
3.1 KiB
Plaintext
73 lines
3.1 KiB
Plaintext
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/* -*- Mode: IDL; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is the Mozilla browser.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications, Inc.
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* Portions created by the Initial Developer are Copyright (C) 1999
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Travis Bogard <travis@netscape.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsISupports.idl"
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/**
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* The nsIInterfaceRequestor interface defines a generic interface for
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* requesting interfaces that a given object might provide access to.
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* This is very similar to QueryInterface found in nsISupports.
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* The main difference is that interfaces returned from GetInterface()
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* are not required to provide a way back to the object implementing this
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* interface. The semantics of QI() dictate that given an interface A that
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* you QI() on to get to interface B, you must be able to QI on B to get back
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* to A. This interface however allows you to obtain an interface C from A
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* that may or most likely will not have the ability to get back to A.
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*
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* @status FROZEN
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*/
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[scriptable, uuid(033A1470-8B2A-11d3-AF88-00A024FFC08C)]
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interface nsIInterfaceRequestor : nsISupports
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{
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/**
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* Retrieves the specified interface pointer.
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*
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* @param uuid The IID of the interface being requested.
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* @param result [out] The interface pointer to be filled in if
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* the interface is accessible.
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* @return NS_OK - interface was successfully returned.
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* NS_NOINTERFACE - interface not accessible.
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* NS_ERROR* - method failure.
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*/
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void getInterface(in nsIIDRef uuid,
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[iid_is(uuid),retval] out nsQIResult result);
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};
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