Application: gvSIG desktop

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2013 gvSIG Association.

 *

 * 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 3

 * 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., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.app.project.documents.view.toc.actions;

import org.gvsig.andami.PluginServices;

import org.gvsig.app.extension.ProjectExtension;

import org.gvsig.app.project.Project;

import org.gvsig.app.project.documents.view.toc.AbstractTocContextMenuAction;

import org.gvsig.app.project.documents.view.toc.ITocItem;

import org.gvsig.fmap.dal.exception.ReadException;

import org.gvsig.fmap.geom.GeometryLocator;

import org.gvsig.fmap.geom.GeometryManager;

import org.gvsig.fmap.geom.Geometry.SUBTYPES;

import org.gvsig.fmap.geom.exception.CreateEnvelopeException;

import org.gvsig.fmap.geom.primitive.Envelope;

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

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

public class ZoomAlTemaTocMenuEntry extends AbstractTocContextMenuAction {

        private static final GeometryManager geomManager = GeometryLocator.getGeometryManager();

        private static final Logger logger = LoggerFactory.getLogger(ZoomAlTemaTocMenuEntry.class);

        public String getGroup() {

                return "group2"; //FIXME

        }

        public int getGroupOrder() {

                return 20;

        }

        public int getOrder() {

                return 1;

        }

        public String getText() {

                return PluginServices.getText(this, "Zoom_a_la_capa");

        }

        public boolean isEnabled(ITocItem item, FLayer[] selectedItems) {

                return true;

        }

        public boolean isVisible(ITocItem item, FLayer[] selectedItems) {

                if (isTocItemBranch(item) && ! (selectedItems == null || selectedItems.length <= 0)) {

                        return true;

                }

                return false;

        }

        public void execute(ITocItem item, FLayer[] selectedItems) {

                // 050209, jmorell: Para que haga un zoom a un grupo de capas seleccionadas.

                if (selectedItems.length==1) {

                try {

                        if (!selectedItems[0].isAvailable()) {

                                        return;

                                }

                        getMapContext().zoomToEnvelope(selectedItems[0].getFullEnvelope());

                        } catch (ReadException e1) {

                                e1.printStackTrace();

                        }

                } else {

                        try {

                                Envelope maxExtent = setMaxExtent(selectedItems);

                                getMapContext().zoomToEnvelope(maxExtent);

                        } catch (ReadException e1) {

                                e1.printStackTrace();

                        }

                }

                Project project=((ProjectExtension)PluginServices.getExtension(ProjectExtension.class)).getProject();

                project.setModified(true);

        }

        private Envelope setMaxExtent(FLayer[] actives)

                        throws ReadException {

                Envelope extRef = null;

                        extRef = actives[0].getFullEnvelope();

                        double minXRef = extRef.getMinimum(0);

                        double maxYRef = extRef.getMaximum(1);

                        double maxXRef = extRef.getMaximum(0);

                        double minYRef = extRef.getMinimum(1);

                        for (int i = 0; i < actives.length; i++) {

                                if (actives[i].isAvailable()) {

                                        Envelope extVar = actives[i].getFullEnvelope();

                                        double minXVar = extVar.getMinimum(0);

                                        double maxYVar = extVar.getMaximum(1);

                                        double maxXVar = extVar.getMaximum(0);

                                        double minYVar = extVar.getMinimum(1);

                                        if (minXVar <= minXRef) {

                                                minXRef = minXVar;

                                        }

                                        if (maxYVar >= maxYRef) {

                                                maxYRef = maxYVar;

                                        }

                                        if (maxXVar >= maxXRef) {

                                                maxXRef = maxXVar;

                                        }

                                        if (minYVar <= minYRef) {

                                                minYRef = minYVar;

                                        }

                                        try {

                                                extRef = geomManager.createEnvelope(minXRef, minYRef, maxXRef, maxYRef, SUBTYPES.GEOM2D);

                                        } catch (CreateEnvelopeException e) {

                                                logger.error("Error creating the envelope", e);

                                        }

                                }

                        }

                return extRef;

        }

}