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.

 */

/* CVS MESSAGES:

*

* $Id: LabelingFactory.java 13913 2007-09-20 09:36:02Z jaume $

* $Log$

* Revision 1.9  2007-09-20 09:33:15  jaume

* Refactored: fixed name of IPersistAnce to IPersistence

*

* Revision 1.8  2007/05/22 12:17:41  jaume

* *** empty log message ***

*

* Revision 1.7  2007/05/22 10:05:31  jaume

* *** empty log message ***

*

* Revision 1.6  2007/04/13 11:59:30  jaume

* *** empty log message ***

*

* Revision 1.5  2007/03/28 16:48:01  jaume

* *** empty log message ***

*

* Revision 1.4  2007/03/20 16:16:20  jaume

* refactored to use ISymbol instead of FSymbol

*

* Revision 1.3  2007/03/09 11:20:57  jaume

* Advanced symbology (start committing)

*

* Revision 1.2  2007/03/09 08:33:43  jaume

* *** empty log message ***

*

* Revision 1.1.2.4  2007/02/21 07:34:08  jaume

* labeling starts working

*

* Revision 1.1.2.3  2007/02/12 15:15:20  jaume

* refactored interval legend and added graduated symbol legend

*

* Revision 1.1.2.2  2007/02/09 07:47:05  jaume

* Isymbol moved

*

* Revision 1.1.2.1  2007/02/02 16:21:24  jaume

* start commiting labeling stuff

*

* Revision 1.1.2.1  2007/01/30 18:10:45  jaume

* start commiting labeling stuff

*

*

*/

package org.gvsig.symbology.fmap.mapcontext.rendering.legend.styling;

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

import org.gvsig.fmap.mapcontext.rendering.legend.styling.ILabelingMethod;

import org.gvsig.fmap.mapcontext.rendering.legend.styling.ILabelingStrategy;

import org.gvsig.fmap.mapcontext.rendering.legend.styling.IPlacementConstraints;

import org.gvsig.fmap.mapcontext.rendering.legend.styling.IZoomConstraints;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

public class LabelingFactory {

        final static private Logger logger = LoggerFactory.getLogger(LabelingFactory.class);

        @SuppressWarnings("unchecked")

        private static Class defaultLabelingStrategy =

                        AttrInTableLabelingStrategy.class;

        /**

         * Given a layer, a labeling method, a label placements constraints, and a label

         * zoom constraints it will figure out the best ILabelingStrategy that meets all

         * the needs.

         * @param layer, the target layer

         * @param method, the desired methods

         * @param placement, the desired placement constraints

         * @param zoom, the desired zoom constraints

         * @return ILabelingStrategy

         */

        public static ILabelingStrategy createStrategy(FLayer layer,

                        ILabelingMethod method, IPlacementConstraints placement,

                        IZoomConstraints zoom)         {

                if (method == null && placement == null && zoom == null)

                        return createDefaultStrategy(layer);

                ILabelingStrategy strat = createDefaultStrategy(layer);

                if (method != null)

                        strat.setLabelingMethod(method);

                if (placement != null)

                        strat.setPlacementConstraints(placement);

                return strat;

        }

        /**

         * Creates a default labeling strategy from an XMLEntity.

         * @param layer

         * @return an instance of DefaultStrategy

         */

        public static ILabelingStrategy createDefaultStrategy(FLayer layer) {

                ILabelingStrategy st;

                try {

                        st = (ILabelingStrategy) defaultLabelingStrategy.newInstance();

                        st.setLayer(layer);

                        return st;

                } catch (Exception e) {

                        logger.error(e.getMessage());

                        return null;

                }

        }

        @SuppressWarnings("unchecked")

        public static void setDefaultLabelingStrategy(Class defaultLabelingStrategy) {

                LabelingFactory.defaultLabelingStrategy = defaultLabelingStrategy;

        }

}