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.selectiontools.app.extension;

import java.util.ArrayList;

import java.util.List;

import javax.swing.JOptionPane;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

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.exception.DataException;

import org.gvsig.fmap.mapcontext.MapContext;

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

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

import org.gvsig.selectiontools.app.extension.tools.buffer.gui.BufferConfigurationPanel;

/**

 * Extension to add support for selecting the geometries of the active vector

 * layers that intersect with a buffer around their previously selected

 * geometries.

 */

public class SelectByBufferExtension extends Extension {

    private static Logger logger

            = LoggerFactory.getLogger(SelectByBufferExtension.class);

    public static final String BUFFER_SELECTION_TOOL_NAME = "bufferSelection";

    public void initialize() {

        IconThemeHelper.registerIcon("action", "selection-select-by-buffer", this);

        IconThemeHelper.registerIcon("cursor", "cursor-select-by-buffer", this);

    }

    public void execute(String actionCommand) {

        ApplicationManager application = ApplicationLocator.getManager();

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

        if (view == null) {

            return;

        }

        ViewDocument document = view.getViewDocument();

        if (actionCommand.equals("SELBUFFER")) {

            MapContext mapContext = document.getMapContext();

            FLayer layers[] = mapContext.getLayers().getActives();

            FLayer layer;

            List<FLyrVect> usefulLayers = new ArrayList<FLyrVect>();

            int emptySelectionLayers = 0;

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

                layer = layers[i];

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

                    FLyrVect layervect = (FLyrVect) layer;

                    usefulLayers.add(layervect);

                    try {

                        if (layervect.getFeatureStore().getFeatureSelection().isEmpty()) {

                            emptySelectionLayers++;

                        }

                    } catch (DataException e) {

                        logger.warn("Error While getting selection for layer '" + layer.getName() + "'.", e);

                        application.messageDialog(

                                application.translate("Failed_selecting_layer") + ": " + layer.getName(),

                                application.translate("Warning"),

                                JOptionPane.WARNING_MESSAGE);

                    }

                }

            }

            if (usefulLayers.isEmpty() || emptySelectionLayers == usefulLayers.size()) {

                application.messageDialog(

                        application.translate("_There_are_no_geometries_selected"),

                        application.translate("Warning"),

                        JOptionPane.WARNING_MESSAGE);

                return;

            }

            // Creates and displays the configuration panel

            application.getUIManager().addWindow(

                    new BufferConfigurationPanel(usefulLayers, view));

        }

    }

    public boolean isVisible() {

        ApplicationManager application = ApplicationLocator.getManager();

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

        if (view == null) {

            return false;

        }

        ViewDocument document = view.getViewDocument();

        MapContext mapa = document.getMapContext();

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

    }

    public boolean isEnabled() {

        ApplicationManager application = ApplicationLocator.getManager();

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

        if (view == null) {

            return false;

        }

        ViewDocument document = view.getViewDocument();

        MapContext mapa = document.getMapContext();

        FLayer layers[] = mapa.getLayers().getActives();

        FLayer layer;

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

            layer = layers[i];

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

                FLyrVect layervect = (FLyrVect) layer;

                try {

                    if (!layervect.getFeatureStore().getFeatureSelection().isEmpty()) {

                        return true;

                    }

                } catch (DataException e) {

                    logger.warn("Error While getting selection for layer '" + layer.getName() + "'.", e);

                }

            }

        }

        return false;

    }

}