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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 com.iver.cit.gvsig;
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import org.gvsig.fmap.dal.exception.DataException;
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import org.gvsig.fmap.dal.exception.ReadException;
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import org.gvsig.fmap.dal.feature.FeatureSelection;
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import org.gvsig.fmap.mapcontext.layers.vectorial.FLyrVect;
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import org.gvsig.fmap.mapcontrol.MapControl;
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import com.iver.andami.PluginServices;
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import com.iver.andami.messages.NotificationManager;
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import com.iver.andami.plugins.Extension;
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import com.iver.cit.gvsig.gui.cad.tools.EquidistanceCADTool;
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import com.iver.cit.gvsig.project.documents.view.gui.View;
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/**
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 * Extensi?n para crear una geometr?a equidistante a otra.
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 *
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 * @author Vicente Caballero Navarro
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 */
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public class EquidistanceExtension extends Extension {
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        private View view;
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        private MapControl mapControl;
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        private EquidistanceCADTool equidistanceCADTool;
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        /**
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         * @see com.iver.andami.plugins.IExtension#initialize()
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         */
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        public void initialize() {
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                equidistanceCADTool=new EquidistanceCADTool();
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                CADExtension.addCADTool("_equidistance",equidistanceCADTool);
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                registerIcons();
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        }
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        private void registerIcons(){
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                PluginServices.getIconTheme().registerDefault(
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                                "edition-geometry-equidistance",
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                                this.getClass().getClassLoader().getResource("images/Equidistance.png")
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                        );
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        }
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        /**
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         * @see com.iver.andami.plugins.IExtension#execute(java.lang.String)
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         */
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        public void execute(String s) {
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                CADExtension.initFocus();
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                if (s.equals("_equidistance")) {
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                CADExtension.setCADTool(s,true);
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        }
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                CADExtension.getEditionManager().setMapControl(mapControl);
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                CADExtension.getCADToolAdapter().configureMenu();
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        }
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        /**
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         * @see com.iver.andami.plugins.IExtension#isEnabled()
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         */
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        public boolean isEnabled() {
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                try {
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                        if (EditionUtilities.getEditionStatus() == EditionUtilities.EDITION_STATUS_ONE_VECTORIAL_LAYER_ACTIVE_AND_EDITABLE) {
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                                view = (View) PluginServices.getMDIManager().getActiveWindow();
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                                mapControl = view.getMapControl();
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                                EditionManager em=CADExtension.getEditionManager();
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                                if (em.getActiveLayerEdited()==null)
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                                        return false;
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                                FLyrVect lv=(FLyrVect)em.getActiveLayerEdited().getLayer();
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                                if (((FeatureSelection)lv.getFeatureStore().getSelection()).getSize()!=1)
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                                        return false;
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                                if (equidistanceCADTool.isApplicable(lv.getShapeType())){
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                                        return true;
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                                }
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                        }
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                } catch (ReadException e) {
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                        NotificationManager.addError(e.getMessage(),e);
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                } catch (DataException e) {
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                        NotificationManager.addError(e.getMessage(),e);
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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.andami.plugins.IExtension#isVisible()
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         */
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        public boolean isVisible() {
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                if (EditionUtilities.getEditionStatus() == EditionUtilities.EDITION_STATUS_ONE_VECTORIAL_LAYER_ACTIVE_AND_EDITABLE)
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                        return true;
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                return false;
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        }
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}