Application: gvSIG desktop

package org.gvsig.selectiontools.app.extension;

import org.gvsig.andami.PluginServices;

import org.gvsig.andami.plugins.Extension;

import org.gvsig.andami.ui.mdiManager.IWindow;

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

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

import org.gvsig.app.project.documents.view.toolListeners.StatusBarListener;

import org.gvsig.fmap.mapcontext.MapContext;

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

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

import org.gvsig.fmap.mapcontrol.MapControl;

import org.gvsig.fmap.mapcontrol.tools.Behavior.Behavior;

import org.gvsig.fmap.mapcontrol.tools.Behavior.MouseMovementBehavior;

import org.gvsig.selectiontools.app.extension.tools.CircleSelectListener;

import org.gvsig.selectiontools.app.extension.tools.behavior.CircleSelectionBehavior;

/* 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.

 * 

 */

/**

 * <p>

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

 * layers that intersect with a circle defined by the user.

 * </p>

 * 

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

 */

public class SelectByCircleExtension extends Extension {

    public static final String CIRCLE_SELECTION_TOOL_NAME = "circleSelection";

    /*

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

     */

    public void initialize() {

        registerIcons();

    }

    private void registerIcons() {

        PluginServices.getIconTheme().registerDefault("circle-cursor-icon",

            this.getClass()

                .getClassLoader()

                .getResource("images/circle-cursor-icon.png"));

        PluginServices.getIconTheme().registerDefault("select-by-circle-icon",

            this.getClass()

                .getClassLoader()

                .getResource("images/select-by-circle-icon.png"));

    }

    /*

     * (non-Javadoc)

     * 

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

     */

    public void execute(String actionCommand) {

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

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

            if (window instanceof IView) {

                IView view = (IView) window;

                // Selection by circle

                MapControl mc = view.getMapControl();

                // If current's view MapControl doesn't have the

                // "CircleSelection" tool, adds it

                if (!mc.getNamesMapTools()

                    .containsKey(CIRCLE_SELECTION_TOOL_NAME)) {

                    CircleSelectListener circleSelListener =

                        new CircleSelectListener(mc);

                    mc.addBehavior(CIRCLE_SELECTION_TOOL_NAME, new Behavior[] {

                        new CircleSelectionBehavior(circleSelListener),

                        new MouseMovementBehavior(new StatusBarListener(mc)) });

                }

                mc.setTool(CIRCLE_SELECTION_TOOL_NAME);

            }

        }

    }

    /*

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

     */

    public boolean isVisible() {

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

        if (f == null) {

            return false;

        }

        if (f instanceof IView) {

            IView vista = (IView) f;

            ViewDocument model = vista.getViewDocument();

            MapContext mapa = model.getMapContext();

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

        }

        return false;

    }

    /*

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

     */

    public boolean isEnabled() {

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

        if (f == null) {

            return false;

        }

        if (f instanceof IView) {

            IView vista = (IView) f;

            ViewDocument model = vista.getViewDocument();

            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;

    }

}