| 1 | /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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| 2 | /* ***** BEGIN LICENSE BLOCK *****
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| 3 | * Version: MPL 1.1/GPL 2.0/LGPL 2.1
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| 4 | *
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| 5 | * The contents of this file are subject to the Mozilla Public License Version
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| 6 | * 1.1 (the "License"); you may not use this file except in compliance with
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| 7 | * the License. You may obtain a copy of the License at
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| 8 | * http://www.mozilla.org/MPL/
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| 9 | *
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| 10 | * Software distributed under the License is distributed on an "AS IS" basis,
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| 11 | * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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| 12 | * for the specific language governing rights and limitations under the
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| 13 | * License.
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| 14 | *
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| 15 | * The Original Code is mozilla.org code.
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| 16 | *
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| 17 | * The Initial Developer of the Original Code is
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| 18 | * Netscape Communications Corporation.
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| 19 | * Portions created by the Initial Developer are Copyright (C) 1998
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| 20 | * the Initial Developer. All Rights Reserved.
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| 21 | *
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| 22 | * Contributor(s):
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| 23 | *
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| 24 | * Alternatively, the contents of this file may be used under the terms of
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| 25 | * either of the GNU General Public License Version 2 or later (the "GPL"),
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| 26 | * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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| 27 | * in which case the provisions of the GPL or the LGPL are applicable instead
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| 28 | * of those above. If you wish to allow use of your version of this file only
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| 29 | * under the terms of either the GPL or the LGPL, and not to allow others to
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| 30 | * use your version of this file under the terms of the MPL, indicate your
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| 31 | * decision by deleting the provisions above and replace them with the notice
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| 32 | * and other provisions required by the GPL or the LGPL. If you do not delete
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| 33 | * the provisions above, a recipient may use your version of this file under
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| 34 | * the terms of any one of the MPL, the GPL or the LGPL.
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| 35 | *
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| 36 | * ***** END LICENSE BLOCK ***** */
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| 37 |
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| 38 | #include "nsISupports.idl"
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| 39 |
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| 40 | /**
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| 41 | * This interface is implemented by an object that wants
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| 42 | * to observe an event corresponding to a topic.
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| 43 | *
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| 44 | * @status FROZEN
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| 45 | */
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| 46 |
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| 47 | [scriptable, uuid(DB242E01-E4D9-11d2-9DDE-000064657374)]
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| 48 | interface nsIObserver : nsISupports {
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| 49 |
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| 50 | /**
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| 51 | * Observe will be called when there is a notification for the
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| 52 | * topic |aTopic|. This assumes that the object implementing
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| 53 | * this interface has been registered with an observer service
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| 54 | * such as the nsIObserverService.
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| 55 | *
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| 56 | * If you expect multiple topics/subjects, the impl is
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| 57 | * responsible for filtering.
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| 58 | *
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| 59 | * You should not modify, add, remove, or enumerate
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| 60 | * notifications in the implemention of observe.
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| 61 | *
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| 62 | * @param aSubject : Notification specific interface pointer.
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| 63 | * @param aTopic : The notification topic or subject.
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| 64 | * @param aData : Notification specific wide string.
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| 65 | * subject event.
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| 66 | */
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| 67 | void observe( in nsISupports aSubject,
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| 68 | in string aTopic,
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| 69 | in wstring aData );
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| 70 |
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| 71 | };
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| 72 |
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