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/gecko_sdk/idl/nsIObserver.idl

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IDL | 72 lines | 7 code | 6 blank | 59 comment | 0 complexity | 5b3ae671f995b56afe57dbf839e6c1a9 MD5 | raw file
 1/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
 2/* ***** BEGIN LICENSE BLOCK *****
 3 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 4 *
 5 * The contents of this file are subject to the Mozilla Public License Version
 6 * 1.1 (the "License"); you may not use this file except in compliance with
 7 * the License. You may obtain a copy of the License at
 8 * http://www.mozilla.org/MPL/
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15 * The Original Code is mozilla.org code.
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19 * Portions created by the Initial Developer are Copyright (C) 1998
20 * the Initial Developer. All Rights Reserved.
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22 * Contributor(s):
23 *
24 * Alternatively, the contents of this file may be used under the terms of
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27 * in which case the provisions of the GPL or the LGPL are applicable instead
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36 * ***** END LICENSE BLOCK ***** */
37
38#include "nsISupports.idl"
39
40/**
41 * This interface is implemented by an object that wants
42 * to observe an event corresponding to a topic.
43 *
44 * @status FROZEN
45 */
46
47[scriptable, uuid(DB242E01-E4D9-11d2-9DDE-000064657374)]
48interface nsIObserver : nsISupports {
49
50   /**
51    * Observe will be called when there is a notification for the
52    * topic |aTopic|.  This assumes that the object implementing
53    * this interface has been registered with an observer service
54    * such as the nsIObserverService. 
55    *
56    * If you expect multiple topics/subjects, the impl is 
57    * responsible for filtering.
58    *
59    * You should not modify, add, remove, or enumerate 
60    * notifications in the implemention of observe. 
61    *
62    * @param aSubject : Notification specific interface pointer.
63    * @param aTopic   : The notification topic or subject.
64    * @param aData    : Notification specific wide string.
65    *                    subject event.
66    */
67    void observe( in nsISupports aSubject,
68				  in string      aTopic,
69				  in wstring     aData );
70
71};
72