Application: gvSIG desktop

/* 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.

 * 

 */

package org.gvsig.app.extension;

import org.gvsig.andami.PluginServices;

import org.gvsig.andami.messages.NotificationManager;

import org.gvsig.andami.plugins.Extension;

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

import org.gvsig.app.project.documents.table.gui.FeatureTableDocumentPanel;

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

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

/**

 * Extensi?n encargada de limpiar la selecci?n.

 * 

 * @author Vicente Caballero Navarro

 */

public class ClearSelectionExtension extends Extension {

    public void execute(String s) {

        if (s.compareTo("DEL_SELECTION") == 0) {

            IWindow activeWindow =

                PluginServices.getMDIManager().getActiveWindow();

            if (isFeatureTableDocumentPanel(activeWindow)) {

                try {

                    FeatureSelection selection = getSelection(activeWindow);

                    selection.deselectAll();

                } catch (DataException e) {

                    NotificationManager.addError(e);

                }

            }

        }

    }

    public boolean isVisible() {

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

        return isFeatureTableDocumentPanel(activeWindow);

    }

    private boolean isFeatureTableDocumentPanel(IWindow activeWindow) {

        return activeWindow instanceof FeatureTableDocumentPanel;

    }

    public boolean isEnabled() {

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

        if (isFeatureTableDocumentPanel(activeWindow)) {

            try {

                return !getSelection(activeWindow).isEmpty();

            } catch (DataException e) {

                throw new RuntimeException(

                    "Error getting the selection to check if it is empty", e);

            }

        }

        return false;

    }

    private FeatureSelection getSelection(IWindow activeWindow)

        throws DataException {

        return (FeatureSelection) ((FeatureTableDocumentPanel) activeWindow)

            .getModel().getStore().getSelection();

    }

    public void initialize() {

        registerIcons();

    }

    private void registerIcons() {

        PluginServices.getIconTheme().registerDefault(

            "table-clear-selection",

            this.getClass().getClassLoader()

                .getResource("images/delselection.png"));

    }

}