svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.mapcontext / org.gvsig.fmap.mapcontext.api / src / main / java / org / gvsig / fmap / mapcontext / layers / LayerChangeSupport.java @ 42800
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| 1 | 40559 | jjdelcerro | /**
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| 2 | * gvSIG. Desktop Geographic Information System.
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| 3 | 40435 | jjdelcerro | *
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| 4 | 40559 | jjdelcerro | * Copyright (C) 2007-2013 gvSIG Association.
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| 5 | 40435 | jjdelcerro | *
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| 6 | * This program is free software; you can redistribute it and/or
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| 7 | * modify it under the terms of the GNU General Public License
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| 8 | 40559 | jjdelcerro | * as published by the Free Software Foundation; either version 3
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| 9 | 40435 | jjdelcerro | * of the License, or (at your option) any later version.
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| 10 | *
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| 11 | * This program is distributed in the hope that it will be useful,
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 14 | * GNU General Public License for more details.
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| 15 | *
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| 16 | * You should have received a copy of the GNU General Public License
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| 17 | * along with this program; if not, write to the Free Software
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| 18 | 40559 | jjdelcerro | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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| 19 | * MA 02110-1301, USA.
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| 20 | 40435 | jjdelcerro | *
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| 21 | 40559 | jjdelcerro | * For any additional information, do not hesitate to contact us
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| 22 | * at info AT gvsig.com, or visit our website www.gvsig.com.
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| 23 | 40435 | jjdelcerro | */
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| 24 | package org.gvsig.fmap.mapcontext.layers; |
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| 25 | |||
| 26 | 42800 | jjdelcerro | import java.util.HashSet; |
| 27 | import java.util.Set; |
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| 28 | 40435 | jjdelcerro | |
| 29 | import org.gvsig.fmap.mapcontext.rendering.legend.events.LegendChangedEvent; |
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| 30 | import org.gvsig.fmap.mapcontext.rendering.legend.events.listeners.LegendListener; |
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| 31 | |||
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| 34 | /**
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| 35 | * <p>Manages all legend listeners of a layer, notifying them any legend change event produced.</p>
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| 36 | *
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| 37 | */
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| 38 | public class LayerChangeSupport { |
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| 39 | /**
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| 40 | * <p>The legend listeners of a layer.</p>
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| 41 | */
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| 42 | 42800 | jjdelcerro | private final Set<LegendListener> listeners = new HashSet<>(); |
| 43 | 40435 | jjdelcerro | |
| 44 | /**
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| 45 | * <p>Registers a <code>LegendListener</code>.</p>
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| 46 | *
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| 47 | * @param listener the legend listener
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| 48 | */
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| 49 | public void addLayerListener(LegendListener listener) { |
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| 50 | listeners.add(listener); |
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| 51 | } |
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| 52 | |||
| 53 | /**
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| 54 | * <p>Removes a registered <code>LegendListener</code>.</p>
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| 55 | *
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| 56 | * @param listener the legend listener
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| 57 | */
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| 58 | public void removeLayerListener(LegendListener listener) { |
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| 59 | listeners.remove(listener); |
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| 60 | } |
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| 61 | |||
| 62 | /**
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| 63 | * <p>Notifies a legend change to all legend listeners registered.</p>
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| 64 | *
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| 65 | * @param e a legend event with the new legend and events that compound this one
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| 66 | */
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| 67 | public void callLegendChanged(LegendChangedEvent e) { |
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| 68 | 42800 | jjdelcerro | for (LegendListener listener : listeners) {
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| 69 | listener.legendChanged(e); |
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| 70 | } |
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| 71 | 40435 | jjdelcerro | } |
| 72 | } |