| gvSIG desktop 1

/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

 *

 * Copyright (C) 2005 IVER T.I. and Generalitat Valenciana.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 *

 * For more information, contact:

 *

 *  Generalitat Valenciana

 *   Conselleria d'Infraestructures i Transport

 *   Av. Blasco Ib??ez, 50

 *   46010 VALENCIA

 *   SPAIN

 *

 *      +34 963862235

 *   gvsig@gva.es

 *      www.gvsig.gva.es

 *

 *    or

 *

 *   IVER T.I. S.A

 *   Salamanca 50

 *   46005 Valencia

 *   Spain

 *

 *   +34 963163400

 *   dac@iver.es

 */

package org.gvsig.app.extension;

import org.gvsig.andami.IconThemeHelper;

import org.gvsig.andami.PluginServices;

import org.gvsig.andami.plugins.Extension;

import org.gvsig.app.project.documents.view.ViewDocument;

import org.gvsig.app.project.documents.view.gui.DefaultViewPanel;

import org.gvsig.fmap.mapcontext.MapContext;

import org.gvsig.fmap.mapcontext.layers.FLayers;

import org.gvsig.fmap.mapcontrol.MapControl;

/**

 * Extensi?n que controla las operaciones de medida realizadas sobre la vista.

 *

 * @author Vicente Caballero Navarro

 */

public class MeasureExtension extends Extension {

    private void registerDistanceUnits() {

            MapContext.addDistanceUnit("Millas_Nauticas","nmi",1852);

            MapContext.addDistanceUnit("Decimetros","dm",0.1);

    }

private void registerAreaUnits(){

        MapContext.addAreaUnit("Areas","a",false,10);

        MapContext.addAreaUnit("Hectareas","ha",false,100);

        MapContext.addAreaUnit("HanegadasV","hgV",false,28.8287);

        MapContext.addAreaUnit("HanegadasC","hgC",false,80.2467);

        MapContext.addAreaUnit("Decimetros","dm",true,0.1);

        MapContext.addAreaUnit("Acres","acre",false,63.6149);

        MapContext.addAreaUnit("Millas_Nauticas","nmi",true,1852);

}

        /* (non-Javadoc)

     * @see com.iver.andami.plugins.IExtension#initialize()

     */

    public void initialize() {

            registerDistanceUnits();

            registerAreaUnits();

            IconThemeHelper.registerIcon("action", "view-query-distance", this);

            IconThemeHelper.registerIcon("action", "view-query-area", this);

    }

    /* (non-Javadoc)

     * @see com.iver.andami.plugins.IExtension#execute(java.lang.String)

     */

    public void execute(String s) {

        org.gvsig.andami.ui.mdiManager.IWindow view = PluginServices.getMDIManager()

                                                                   .getActiveWindow();

        if (!(view instanceof DefaultViewPanel)) {

            return;

        }

        DefaultViewPanel vista = (DefaultViewPanel) view;

        MapControl mapCtrl = vista.getMapControl();

        if (s.equals("MEDICION")) {

            mapCtrl.setTool("medicion");

        } else if (s.equals("AREA")) {

            mapCtrl.setTool("area");

        }

    }

    /* (non-Javadoc)

     * @see com.iver.andami.plugins.IExtension#isEnabled()

     */

    public boolean isEnabled() {

        org.gvsig.andami.ui.mdiManager.IWindow f = PluginServices.getMDIManager()

                                                                .getActiveWindow();

        if (f == null) {

            return false;

        }

        if (f instanceof DefaultViewPanel) {

            DefaultViewPanel vista = (DefaultViewPanel) f;

            ViewDocument model = vista.getModel();

            MapContext mapa = model.getMapContext();

            FLayers layers = mapa.getLayers();

            for (int i = 0; i < layers.getLayersCount(); i++) {

                if (layers.getLayer(i).isAvailable()) {

                    return true;

                }

            }

        }

        return false;

    }

    /* (non-Javadoc)

     * @see com.iver.andami.plugins.IExtension#isVisible()

     */

    public boolean isVisible() {

        org.gvsig.andami.ui.mdiManager.IWindow f = PluginServices.getMDIManager()

                                                                .getActiveWindow();

        if (f == null) {

            return false;

        }

        if (f instanceof DefaultViewPanel) {

            DefaultViewPanel vista = (DefaultViewPanel) f;

            ViewDocument model = vista.getModel();

            MapContext mapa = model.getMapContext();

            return mapa.getLayers().getLayersCount() > 0;

        }

        return false;

    }

}