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.extension;

import javax.swing.JOptionPane;

import org.gvsig.andami.IconThemeHelper;

import org.gvsig.andami.plugins.Extension;

import org.gvsig.app.ApplicationLocator;

import org.gvsig.app.ApplicationManager;

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

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

import org.gvsig.fmap.dal.feature.FeatureSelection;

import org.gvsig.fmap.dal.feature.FeatureStore;

import org.gvsig.fmap.dal.feature.FeatureType;

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

import org.gvsig.fmap.mapcontext.MapContext;

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

import org.gvsig.fmap.mapcontext.layers.vectorial.FLyrVect;

import org.gvsig.tools.exception.BaseException;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

/**

 * Extensi?n de zoom a lo seleccionado teniendo como ventana activa una vista.

 *

 */

public class ZoomToSelectExtension extends Extension {

    private static final Logger logger = LoggerFactory

            .getLogger(ZoomToSelectExtension.class);

    public void initialize() {

        IconThemeHelper.registerIcon("action", "view-navigation-zoom-to-selection", this);

    }

    public void execute(String s) {

        ApplicationManager application = ApplicationLocator.getManager();

        IView view = (IView) application.getActiveComponent(ViewDocument.class);

        if (view == null) {

            return;

        }

        ViewDocument document = view.getViewDocument();

        MapContext mapa = document.getMapContext();

        Envelope selectedExtent = null;

        try {

            selectedExtent = mapa.getSelectionBounds();

            mapa.getViewPort().setEnvelope(selectedExtent);

        } catch (BaseException e) {

            String msg = "Can't zoom to the seleccion.";

            logger.warn(msg, e);

            application.message(msg, JOptionPane.WARNING_MESSAGE);

        }

    }

    public boolean isVisible() {

        ApplicationManager application = ApplicationLocator.getManager();

        IView view = (IView) application.getActiveComponent(ViewDocument.class);

        if (view == null) {

            return false;

        }

        ViewDocument document = view.getViewDocument();

        return document.getMapContext().getLayers().getLayersCount() > 0;

    }

    @Override

    public boolean isEnabled() {

        ApplicationManager application = ApplicationLocator.getManager();

        IView view = (IView) application.getActiveComponent(ViewDocument.class);

        if (view == null) {

            return false;

        }

        ViewDocument document = view.getViewDocument();

        if( document == null ) {

            return false;

        }

        boolean hasActiveVectorLayers = false;

        boolean hasSelection = false;

        for (FLayer layer : document.getMapContext().getLayers()) {

            if( layer.isActive() && layer.isAvailable() && layer instanceof FLyrVect ) {

                try {

                    hasActiveVectorLayers = true;

                    FeatureStore store = ((FLyrVect)layer).getFeatureStore();

                    FeatureSelection selection = store.getFeatureSelection();

                    if( !selection.isAvailable() ) {

                        return false;

                    }

                    if( !selection.isEmpty() ) {

                        hasSelection = true;

                    }

                } catch (Exception ex) {

                }

            }

        }

        return hasActiveVectorLayers && hasSelection;

    }

}