root / branches / v2_0_0_prep / applications / appgvSIG / src / org / gvsig / app / extension / ZoomPrev.java @ 31496
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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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*
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* Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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*
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* For more information, contact:
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*
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* Generalitat Valenciana
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* Conselleria d'Infraestructures i Transport
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* Av. Blasco Ib??ez, 50
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* 46010 VALENCIA
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* SPAIN
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*
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* +34 963862235
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* gvsig@gva.es
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* www.gvsig.gva.es
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*
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* or
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*
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* IVER T.I. S.A
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* Salamanca 50
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* 46005 Valencia
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* Spain
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*
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* +34 963163400
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* dac@iver.es
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*/
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package org.gvsig.app.extension; |
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import org.gvsig.andami.PluginServices; |
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import org.gvsig.andami.plugins.Extension; |
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import org.gvsig.app.project.documents.AbstractDocument; |
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import org.gvsig.app.project.documents.view.gui.DefaultViewPanel; |
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import org.gvsig.fmap.mapcontext.MapContext; |
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import org.gvsig.fmap.mapcontext.ViewPort; |
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/**
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* Extensi?n que cambia el extent de la vista al extent anterior.
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*
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* @author Vicente Caballero Navarro
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*/
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public class ZoomPrev extends Extension { |
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private DefaultViewPanel vista;
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/**
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* @see com.iver.mdiApp.plugins.IExtension#isEnabled()
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*/
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public boolean isEnabled() { |
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ViewPort vp = vista.getModel().getMapContext().getViewPort(); |
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return vp.getExtents().hasPrevious();
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} |
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/**
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* @see com.iver.mdiApp.plugins.IExtension#isVisible()
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*/
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public boolean isVisible() { |
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org.gvsig.andami.ui.mdiManager.IWindow f = PluginServices.getMDIManager() |
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.getActiveWindow(); |
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if (f!=null && f instanceof DefaultViewPanel) { |
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vista = (DefaultViewPanel) f; |
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MapContext mapa = vista.getModel().getMapContext(); |
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return mapa.getLayers().getLayersCount() > 0; |
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} |
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return false; |
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} |
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/**
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* @see com.iver.mdiApp.plugins.IExtension#updateUI(java.lang.String)
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*/
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public void execute(String arg0) { |
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ViewPort vp = vista.getModel().getMapContext().getViewPort(); |
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vp.setPreviousExtent(); |
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((AbstractDocument)vista.getModel()).setModified(true); |
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} |
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/**
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* @see org.gvsig.andami.plugins.IExtension#initialize()
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*/
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public void initialize() { |
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PluginServices.getIconTheme().registerDefault( |
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"view-zoom-back",
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this.getClass().getClassLoader().getResource("images/ZoomPrevio.png") |
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); |
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} |
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} |