ingo@136: package de.intevation.flys.artifacts.states;
ingo@136: 
ingo@136: import org.apache.log4j.Logger;
ingo@136: 
ingo@136: import org.w3c.dom.Element;
ingo@136: 
ingo@313: import de.intevation.artifacts.Artifact;
ingo@136: import de.intevation.artifacts.CallContext;
ingo@136: 
ingo@136: import de.intevation.artifacts.common.utils.XMLUtils;
ingo@136: 
ingo@136: import de.intevation.artifactdatabase.ProtocolUtils;
ingo@136: import de.intevation.artifactdatabase.data.StateData;
ingo@136: 
ingo@313: import de.intevation.flys.model.River;
ingo@313: 
ingo@313: import de.intevation.flys.artifacts.FLYSArtifact;
ingo@313: import de.intevation.flys.artifacts.model.RiverFactory;
ingo@136: import de.intevation.flys.artifacts.resources.Resources;
ingo@136: 
ingo@136: /**
ingo@136:  * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
ingo@136:  */
ingo@322: public class LocationDistanceSelect extends RangeState {
ingo@136: 
ingo@136:     /** The logger used in this class.*/
ingo@136:     private static Logger logger = Logger.getLogger(LocationDistanceSelect.class);
ingo@136: 
ingo@136: 
ingo@136:     /** The default step width.*/
ingo@136:     public static final String DEFAULT_STEP = "100";
ingo@136: 
ingo@322:     /** The name of the 'from' field. */
ingo@322:     public static final String FROM = "ld_from";
ingo@322: 
ingo@322:     /** The name of the 'to' field. */
ingo@322:     public static final String TO = "ld_to";
ingo@322: 
ingo@322:     /** The name of the 'step' field. */
ingo@322:     public static final String STEP = "ld_step";
ingo@322: 
ingo@136:     /**
ingo@136:      * The default constructor that initializes an empty State object.
ingo@136:      */
ingo@136:     public LocationDistanceSelect() {
ingo@136:     }
ingo@136: 
ingo@136:     protected Element createData(
ingo@136:         XMLUtils.ElementCreator cr,
ingo@313:         Artifact    artifact,
ingo@136:         StateData   data,
ingo@136:         CallContext context)
ingo@136:     {
ingo@136:         Element select = ProtocolUtils.createArtNode(
ingo@136:             cr, "select", null, null);
ingo@136: 
ingo@136:         cr.addAttr(select, "name", data.getName(), true);
ingo@136: 
ingo@136:         Element label = ProtocolUtils.createArtNode(
ingo@136:             cr, "label", null, null);
ingo@136: 
ingo@136:         Element choices = ProtocolUtils.createArtNode(
ingo@136:             cr, "choices", null, null);
ingo@136: 
ingo@136:         label.setTextContent(Resources.getMsg(
ingo@136:             context.getMeta(),
ingo@136:             data.getName(),
ingo@136:             data.getName()));
ingo@136: 
ingo@136:         select.appendChild(label);
ingo@136: 
ingo@136:         return select;
ingo@136:     }
ingo@136: 
ingo@136: 
ingo@136:     protected Element[] createItems(
ingo@136:         XMLUtils.ElementCreator cr,
ingo@313:         Artifact    artifact,
ingo@136:         String      name,
ingo@136:         CallContext context)
ingo@136:     {
ingo@313:         double[] minmax = getMinMaxDistance(artifact);
ingo@313: 
ingo@313:         double minVal = Double.MIN_VALUE;
ingo@313:         double maxVal = Double.MAX_VALUE;
ingo@313: 
ingo@313:         if (minmax != null) {
ingo@313:             minVal = minmax[0];
ingo@313:             maxVal = minmax[1];
ingo@313:         }
ingo@313:         else {
ingo@313:             logger.warn("Could not read min/max distance values!");
ingo@313:         }
ingo@136: 
ingo@136:         if (name.equals("ld_from")) {
ingo@313:             Element min = createItem(
ingo@313:                 cr,
ingo@313:                 new String[] {"min", new Double(minVal).toString()});
ingo@313: 
ingo@136:             return new Element[] { min };
ingo@136:         }
ingo@136:         else if (name.equals("ld_to")) {
ingo@313:             Element max = createItem(
ingo@313:                 cr,
ingo@313:                 new String[] {"max", new Double(maxVal).toString()});
ingo@313: 
ingo@136:             return new Element[] { max };
ingo@136:         }
ingo@136:         else {
ingo@136:             Element step = createItem(cr, new String[] {"step", DEFAULT_STEP});
ingo@136:             return new Element[] { step };
ingo@136:         }
ingo@136: 
ingo@136:     }
ingo@136: 
ingo@136: 
ingo@136:     protected Element createItem(XMLUtils.ElementCreator cr, Object obj) {
ingo@136:         Element item  = ProtocolUtils.createArtNode(cr, "item", null, null);
ingo@136:         Element label = ProtocolUtils.createArtNode(cr, "label", null, null);
ingo@136:         Element value = ProtocolUtils.createArtNode(cr, "value", null, null);
ingo@136: 
ingo@136:         String[] arr = (String[]) obj;
ingo@136: 
ingo@136:         label.setTextContent(arr[0]);
ingo@136:         value.setTextContent(arr[1]);
ingo@136: 
ingo@136:         item.appendChild(label);
ingo@136:         item.appendChild(value);
ingo@136: 
ingo@136:         return item;
ingo@136:     }
ingo@136: 
ingo@136: 
ingo@136:     protected String getUIProvider() {
ingo@136:         return "location_distance_panel";
ingo@136:     }
ingo@313: 
ingo@313: 
ingo@313:     protected double[] getMinMaxDistance(Artifact artifact) {
ingo@313:         FLYSArtifact flysArtifact = (FLYSArtifact) artifact;
ingo@624:         StateData    data         = getData(flysArtifact, "river");
ingo@313: 
ingo@624:         String name = data != null ? (String) data.getValue() : "";
ingo@313: 
ingo@313:         logger.debug("Search for the min/max distances of '" + name + "'");
ingo@313: 
ingo@313:         River river = RiverFactory.getRiver(name);
ingo@313: 
ingo@313:         return river != null ? river.determineMinMaxDistance() : null;
ingo@313:     }
ingo@322: 
ingo@322: 
ingo@322:     @Override
ingo@322:     public boolean validate(Artifact artifact, CallContext context)
ingo@322:     throws IllegalArgumentException
ingo@322:     {
ingo@322:         logger.debug("LocationDistanceSelect.validate");
ingo@322: 
ingo@624:         FLYSArtifact flys = (FLYSArtifact) artifact;
ingo@322: 
ingo@624:         StateData dFrom = getData(flys, FROM);
ingo@624:         StateData dTo   = getData(flys, TO);
ingo@624:         StateData dStep = getData(flys, STEP);
ingo@624: 
ingo@624:         String fromStr = dFrom != null ? (String) dFrom.getValue() : null;
ingo@624:         String toStr   = dTo != null ? (String) dTo.getValue() : null;
ingo@624:         String stepStr = dStep != null ? (String) dStep.getValue() : null;
ingo@322: 
ingo@352:         if (fromStr == null || toStr == null || stepStr == null) {
ingo@352:             throw new IllegalArgumentException("error_empty_state");
ingo@352:         }
ingo@352: 
ingo@322:         try {
ingo@322:             double from = Double.parseDouble(fromStr);
ingo@322:             double to   = Double.parseDouble(toStr);
ingo@322:             double step = Double.parseDouble(stepStr);
ingo@322: 
ingo@322:             double[] minmaxDist = getMinMaxDistance(artifact);
ingo@322: 
ingo@379:             return validateBounds(minmaxDist[0], minmaxDist[1], from, to, step);
ingo@322:         }
ingo@322:         catch (NumberFormatException nfe) {
ingo@322:             throw new IllegalArgumentException("error_feed_number_format");
ingo@322:         }
ingo@322:     }
ingo@136: }
ingo@136: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :