root / branches / v2_0_0_prep / libraries / libFMap_mapcontext / src / org / gvsig / fmap / mapcontext / layers / LayerChangeSupport.java @ 38581
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| 1 | 21200 | vcaballero | /* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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| 2 | *
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| 3 | * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
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| 4 | *
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| 5 | * This program is free software; you can redistribute it and/or
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| 6 | * modify it under the terms of the GNU General Public License
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| 7 | * as published by the Free Software Foundation; either version 2
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| 8 | * of the License, or (at your option) any later version.
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| 9 | *
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| 10 | * This program is distributed in the hope that it will be useful,
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| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 13 | * GNU General Public License for more details.
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| 14 | *
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| 15 | * You should have received a copy of the GNU General Public License
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| 16 | * along with this program; if not, write to the Free Software
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| 17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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| 18 | *
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| 19 | * For more information, contact:
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| 20 | *
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| 21 | * Generalitat Valenciana
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| 22 | * Conselleria d'Infraestructures i Transport
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| 23 | * Av. Blasco Ib??ez, 50
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| 24 | * 46010 VALENCIA
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| 25 | * SPAIN
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| 26 | *
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| 27 | * +34 963862235
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| 28 | * gvsig@gva.es
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| 29 | * www.gvsig.gva.es
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| 30 | *
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| 31 | * or
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| 32 | *
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| 33 | * IVER T.I. S.A
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| 34 | * Salamanca 50
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| 35 | * 46005 Valencia
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| 36 | * Spain
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| 37 | *
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| 38 | * +34 963163400
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| 39 | * dac@iver.es
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| 40 | */
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| 41 | package org.gvsig.fmap.mapcontext.layers; |
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| 42 | |||
| 43 | import java.util.ArrayList; |
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| 44 | import java.util.Iterator; |
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| 45 | |||
| 46 | import org.gvsig.fmap.mapcontext.rendering.legend.events.LegendChangedEvent; |
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| 47 | import org.gvsig.fmap.mapcontext.rendering.legend.events.listeners.LegendListener; |
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| 48 | |||
| 49 | |||
| 50 | |||
| 51 | /**
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| 52 | * <p>Manages all legend listeners of a layer, notifying them any legend change event produced.</p>
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| 53 | *
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| 54 | * @author Vicente Caballero Navarro
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| 55 | */
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| 56 | public class LayerChangeSupport { |
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| 57 | /**
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| 58 | * <p>The legend listeners of a layer.</p>
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| 59 | */
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| 60 | private ArrayList listeners = new ArrayList(); |
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| 61 | |||
| 62 | /**
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| 63 | * <p>Registers a <code>LegendListener</code>.</p>
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| 64 | *
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| 65 | * @param listener the legend listener
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| 66 | */
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| 67 | public void addLayerListener(LegendListener listener) { |
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| 68 | listeners.add(listener); |
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| 69 | } |
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| 70 | |||
| 71 | /**
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| 72 | * <p>Removes a registered <code>LegendListener</code>.</p>
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| 73 | *
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| 74 | * @param listener the legend listener
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| 75 | */
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| 76 | public void removeLayerListener(LegendListener listener) { |
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| 77 | listeners.remove(listener); |
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| 78 | } |
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| 79 | |||
| 80 | /**
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| 81 | * <p>Notifies a legend change to all legend listeners registered.</p>
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| 82 | *
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| 83 | * @param e a legend event with the new legend and events that compound this one
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| 84 | */
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| 85 | public void callLegendChanged(LegendChangedEvent e) { |
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| 86 | for (Iterator iter = listeners.iterator(); iter.hasNext();) { |
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| 87 | LegendListener listener = (LegendListener) iter.next(); |
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| 88 | |||
| 89 | listener.legendChanged(e); |
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| 90 | } |
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| 91 | } |
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| 92 | } |