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):

 * 2009 {DiSiD Technologies}  {{Task}}

 */

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

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

import org.gvsig.fmap.dal.feature.impl.undo.FeatureCommandsStack;

/**

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

 */

public class DefaultFeatureSelectionHelper implements FeatureSelectionHelper {

    private final DefaultFeatureStore store;

    public DefaultFeatureSelectionHelper(DefaultFeatureStore store) {

        this.store = store;

    }

    public FeatureCommandsStack getFeatureStoreCommandsStack() {

        try {

            return store.getCommandsStack();

        } catch (DataException e) {

            // Ignore

            return null;

        }

    }

    public long getFeatureStoreDeltaSize() {

        // If the FeatureManager is present, and the store is in editing

        // mode, the number of current Features may have changed.

        if (store.isEditing() && store.getFeatureManager() != null) {

            return store.getFeatureManager().getDeltaSize();

        } else {

            return 0;

        }

    }

}