Application: gvSIG desktop

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2013 gvSIG Association.

 *

 * 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 3

 * 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.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

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

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

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

/**

 * Helper methods for the Default Selection implementation classes.

 *

 * @see DefaultFeatureReferenceSelection

 * @see DefaultFeatureSelection

 * @author <a href="mailto:cordinyana@gvsig.org">C?sar Ordi?ana</a>

 */

public interface FeatureSelectionHelper {

    /**

     * If the store is in editing mode, it will have the count of added or

     * removed features. This is used to correct the total count of Features.

     *

     * @return the total number of added and deleted features

     */

    long getFeatureStoreDeltaSize();

    /**

     * Returns the {@link FeatureCommandsStack} of the {@link FeatureStore}. If

     * the store is not in editing mode, this method may return null

     *

     * @return the commands stack of the {@link FeatureStore}

     */

    FeatureCommandsStack getFeatureStoreCommandsStack();

}