| 1 | /**
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| 2 | *#########################################################################
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| 3 | *
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| 4 | * A component of the Gatherer application, part of the Greenstone digital
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| 5 | * library suite from the New Zealand Digital Library Project at the
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| 6 | * University of Waikato, New Zealand.
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| 7 | *
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| 8 | * <BR><BR>
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| 9 | *
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| 10 | * Author: John Thompson, Greenstone Digital Library, University of Waikato
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| 11 | *
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| 12 | * <BR><BR>
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| 13 | *
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| 14 | * Copyright (C) 1999 New Zealand Digital Library Project
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| 15 | *
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| 16 | * <BR><BR>
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| 17 | *
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| 18 | * This program is free software; you can redistribute it and/or modify
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| 19 | * it under the terms of the GNU General Public License as published by
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| 20 | * the Free Software Foundation; either version 2 of the License, or
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| 21 | * (at your option) any later version.
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| 22 | *
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| 23 | * <BR><BR>
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| 24 | *
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| 25 | * This program is distributed in the hope that it will be useful,
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| 26 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 27 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 28 | * GNU General Public License for more details.
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| 29 | *
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| 30 | * <BR><BR>
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| 31 | *
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| 32 | * You should have received a copy of the GNU General Public License
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| 33 | * along with this program; if not, write to the Free Software
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| 34 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 35 | *########################################################################
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| 36 | */
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| 37 | package org.greenstone.gatherer.msm;
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| 38 |
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| 39 | /**
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| 40 | * Title: The Gatherer<br>
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| 41 | * Description: The Gatherer: a tool for gathering and enriching digital collections.<br>
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| 42 | * Copyright: Copyright (c) 2001<br>
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| 43 | * Company: The University of Waikato<br>
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| 44 | * @author John Thompson, Greenstone Digital Libraries
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| 45 | * @version 2.1
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| 46 | */
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| 47 | import org.greenstone.gatherer.msm.MSMEvent;
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| 48 |
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| 49 | /** This class provides an interface for classes who wish to listener for events within the <strong>MetadataSetManager</strong>. There are events which are fired whenever a set or an element within a set changes. The events are either very broad, of the <i>metadataSetChanged()</i> variaty down to the more explicit <i>elementChanged(Profile change)</i> which actually details what change occured so the GUI etc can update just that element. */
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| 50 | public interface MSMListener {
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| 51 | /** Method that is called whenever an element within a set is changed or modified.
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| 52 | * @param event A <strong>MSMEvent</strong> containing details of the event that caused this message to be fired.
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| 53 | */
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| 54 | public void elementChanged(MSMEvent event);
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| 55 | /** Called whenever the metadata value changes in some way, such as the addition of a new value.
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| 56 | * @param event A <strong>MSMEvent</strong> containing details of the event that caused this message to be fired.
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| 57 | */
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| 58 | public void metadataChanged(MSMEvent event);
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| 59 | /** Method that is called whenever the metadata set collection changes in some way, such as the addition of a new set or the merging of two sets.
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| 60 | * @param event A <strong>MSMEvent</strong> containing details of the event that caused this message to be fired.
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| 61 | */
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| 62 | public void setChanged(MSMEvent event);
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| 63 | /** Called whenever the value tree of an metadata element changes in some way, such as the addition of a new value.
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| 64 | * @param event A <strong>MSMEvent</strong> containing details of the event that caused this message to be fired.
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| 65 | */
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| 66 | public void valueChanged(MSMEvent event);
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| 67 | }
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