| gvSIG desktop 1

package org.gvsig.selectionTools;

/* gvSIG. Geographic Information System of the Valencian Government

 *

 * Copyright (C) 2007-2008 Infrastructures and Transports Department

 * of the Valencian Government (CIT)

 *

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

 * MA  02110-1301, USA.

 *

 */

import java.util.ArrayList;

import javax.swing.JOptionPane;

import org.gvsig.selectionTools.tools.buffer.gui.BufferConfigurationPanel;

import com.hardcode.gdbms.driver.exceptions.ReadDriverException;

import com.iver.andami.PluginServices;

import com.iver.andami.plugins.Extension;

import com.iver.andami.ui.mdiManager.IWindow;

import com.iver.cit.gvsig.fmap.MapContext;

import com.iver.cit.gvsig.fmap.layers.FLayer;

import com.iver.cit.gvsig.fmap.layers.FLyrVect;

import com.iver.cit.gvsig.project.documents.view.IProjectView;

import com.iver.cit.gvsig.project.documents.view.gui.View;

/**

 * <p>Extension to add support for selecting the geometries of the active vector layers that

 *  intersect with a buffer around their previously selected geometries.</p>

 *

 * @author Pablo Piqueras Bartolom? (pablo.piqueras@iver.es)

 */

public class SelectByBufferExtension extends Extension {

        public static final String BUFFER_SELECTION_TOOL_NAME = "bufferSelection";

        /*

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

         */

        public void initialize() {

                registerIcons();

        }

        private void registerIcons() {

                PluginServices.getIconTheme().registerDefault(

                        "select-by-buffer-icon",

                        this.getClass().getClassLoader().getResource("images/select-by-buffer-icon.png")

                );

        }

        /*

         * (non-Javadoc)

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

         */

        public void execute(String actionCommand) {

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

                        IWindow view = PluginServices.getMDIManager().getActiveWindow();

                        if (view instanceof View) {

                                IProjectView model = ((View)view).getModel();

                                /*

                                 * Unavaliable tool with views in geographic projections

                                 */

                                if (! ((View)view).getMapControl().getProjection().isProjected()) {

                                        JOptionPane.showMessageDialog(null, PluginServices.getText(null, "Tool_unavaliable_with_view_in_geographic_projection"), PluginServices.getText(this, "Warning"), JOptionPane.ERROR_MESSAGE);

                                        return;

                                }

                                MapContext mapContext = model.getMapContext();

                                // If there is at least one active vector layer that has geometries selected -> can use this tool, otherwise notifies the

                                //  limitation in a JOptionPane

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

                                FLayer layer;

                                ArrayList usefulLayers = new ArrayList();

                                int emptySelectionLayers = 0;

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

                                        layer = layers[i];

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

                                                try {

                                                        usefulLayers.add((FLyrVect)layer);

                                                        if (((FLyrVect)layer).getSource().getRecordset().getSelection().cardinality() == 0) {

                                                                emptySelectionLayers++;

                                                        }

                                                }

                                                catch (ReadDriverException rde) {

                                                        JOptionPane.showMessageDialog(null, PluginServices.getText(null, "Failed_selecting_layer") + ": " + layer.getName(), PluginServices.getText(null, "Warning"), JOptionPane.WARNING_MESSAGE);

                                                }

                                        }

                                }

                                if (usefulLayers.size() == 0 || emptySelectionLayers == usefulLayers.size()) {

                                        JOptionPane.showMessageDialog(null, PluginServices.getText(null, "There_are_no_geometries_selected"), PluginServices.getText(null, "Warning"), JOptionPane.WARNING_MESSAGE);

                                        return;

                                }

                                // Creates and displays the configuration panel

                                PluginServices.getMDIManager().addWindow(new BufferConfigurationPanel((FLyrVect[])usefulLayers.toArray(new FLyrVect[0]), (View)view));

                        }

                }

        }

        /*

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

         */

        public boolean isVisible() {

                com.iver.andami.ui.mdiManager.IWindow f = PluginServices.getMDIManager().getActiveWindow();

                if (f == null) {

                        return false;

                }

                if (f instanceof View) {

                        View vista = (View) f;

                        IProjectView model = vista.getModel();

                        if (model == null)

                                return false;

                        MapContext mapa = model.getMapContext();

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

                }

                return false;

        }

        /*

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

         */

        public boolean isEnabled() {

                com.iver.andami.ui.mdiManager.IWindow f = PluginServices.getMDIManager().getActiveWindow();

                if (f == null) {

                        return false;

                }

                if (f instanceof View) {

                        View vista = (View) f;

                        IProjectView model = vista.getModel();

                        /*

                         * Unavaliable tool with views in geographic projections

                         */

                        if (! (vista.getMapControl().getProjection().isProjected())) {

                                return false;

                        }

                        MapContext mapa = model.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()))

                                        return true;

                        }

                }

                return false;

        }

}