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.

 *

 */

/*

 * AUTHORS (In addition to CIT):

 * 2008 {DiSiD Technologies}  {Implement data selection}

 */

package org.gvsig.fmap.dal.feature.impl.undo.command;

import org.gvsig.fmap.dal.feature.exception.SelectionStateException;

import org.gvsig.fmap.dal.feature.impl.DefaultFeatureReferenceSelection;

import org.gvsig.fmap.dal.feature.impl.DefaultFeatureReferenceSelection.SelectionData;

import org.gvsig.tools.undo.RedoException;

import org.gvsig.tools.undo.UndoException;

import org.gvsig.tools.undo.command.impl.AbstractCommand;

/**

 * Command to allow undo and redo over a select or deselect ALL operation

 * performed on a selection.

 * 

 * @author <a href="mailto:cordin@disid.com">C?sar Ordi?ana</a>

 */

public class SelectionCommandSelectAll extends AbstractCommand {

    private final DefaultFeatureReferenceSelection selection;

    private final boolean allSelected;

    private SelectionData selectionData;

    public SelectionCommandSelectAll(

            DefaultFeatureReferenceSelection selection,

            boolean allSelected, String description)

            throws SelectionStateException {

        super(description);

        this.selection = selection;

        this.allSelected = allSelected;

        try {

            this.selectionData = (SelectionData) selection.getData().clone();

        } catch (CloneNotSupportedException ex) {

            throw new SelectionStateException(ex);

        }

    }

    public void execute() {

        // Nothing to do

    }

    public int getType() {

        return allSelected ? INSERT : DELETE;

    }

    public void undo() throws UndoException {

        selection.setData(selectionData);

    }

    public void redo() throws RedoException {

        try {

            // Re-Obtain the state

            selectionData = (SelectionData) selection.getData().clone();

            if (allSelected) {

                selection.selectAll(false);

            } else {

                selection.deselectAll(false);

            }

        } catch (Exception ex) {

            throw new RedoException(this, ex);

        }

    }

}