ingo@383: package de.intevation.flys.artifacts.states;
ingo@383: 
ingo@383: import gnu.trove.TDoubleArrayList;
ingo@383: 
ingo@383: import org.apache.log4j.Logger;
ingo@383: 
ingo@383: import de.intevation.artifacts.Artifact;
ingo@383: import de.intevation.artifacts.CallContext;
ingo@383: 
ingo@383: import de.intevation.artifactdatabase.data.StateData;
ingo@383: 
ingo@624: import de.intevation.flys.artifacts.FLYSArtifact;
ingo@624: 
ingo@383: 
ingo@383: /**
ingo@383:  * This state is used to realize the input of multiple locations as string. The
ingo@383:  * string should be a whitespace separated list of double values where each
ingo@383:  * double value represents a location.
ingo@383:  *
ingo@383:  * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
ingo@383:  */
ingo@383: public class LocationSelect extends LocationDistanceSelect {
ingo@383: 
ingo@383:     /** The logger used in this class.*/
ingo@383:     private static Logger logger = Logger.getLogger(LocationSelect.class);
ingo@383: 
ingo@383: 
ingo@383:     /** The name of the StateData object that stores the location string.*/
ingo@383:     public static final String FIELD_LOCATIONS = "ld_locations";
ingo@383: 
ingo@383: 
ingo@383:     public LocationSelect() {
ingo@383:     }
ingo@383: 
ingo@383: 
ingo@383:     @Override
ingo@383:     protected String getUIProvider() {
ingo@383:         return "location_panel";
ingo@383:     }
ingo@383: 
ingo@383: 
ingo@383:     @Override
ingo@383:     public boolean validate(Artifact artifact, CallContext context)
ingo@383:     throws IllegalArgumentException
ingo@383:     {
ingo@383:         logger.debug("LocationSelect.validate");
ingo@383: 
ingo@624:         FLYSArtifact flys = (FLYSArtifact) artifact;
ingo@624:         StateData    data = getData(flys, FIELD_LOCATIONS);
ingo@383: 
ingo@624:         String locationStr = data != null ? (String) data.getValue() : null;
ingo@383: 
ingo@383:         if (locationStr == null || locationStr.length() == 0) {
ingo@383:             logger.error("No locations given.");
ingo@383:             throw new IllegalArgumentException("error_empty_state");
ingo@383:         }
ingo@383: 
ingo@383:         double[] minmax = getMinMaxDistance(artifact);
ingo@383:         double[] mm     = extractLocations(locationStr);
ingo@383: 
ingo@383:         logger.debug("Inserted min location: " + mm[0]);
ingo@383:         logger.debug("Inserted max location: " + mm[mm.length-1]);
ingo@383: 
ingo@385:         return validateBounds(minmax[0], minmax[1], mm[0], mm[mm.length-1], 0d);
ingo@383:     }
ingo@383: 
ingo@383: 
ingo@383:     /**
ingo@383:      * This method takes a string that consist of whitespace separated double
ingo@383:      * values and returns the double values as array.
ingo@383:      *
ingo@383:      * @param locationStr The locations inserted in this state.
ingo@383:      *
ingo@383:      * @return the locations as array.
ingo@383:      */
ingo@383:     protected double[] extractLocations(String locationStr) {
ingo@383:         String[] tmp               = locationStr.split(" ");
ingo@383:         TDoubleArrayList locations = new TDoubleArrayList();
ingo@383: 
ingo@383:         for (String l: tmp) {
ingo@383:             try {
ingo@383:                 locations.add(Double.parseDouble(l));
ingo@383:             }
ingo@383:             catch (NumberFormatException nfe) {
ingo@383:                 logger.warn(nfe, nfe);
ingo@383:             }
ingo@383:         }
ingo@383: 
ingo@383:         locations.sort();
ingo@383: 
ingo@383:         return locations.toNativeArray();
ingo@383:     }
ingo@383: }
ingo@383: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :