teichmann@5863: /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
teichmann@5863:  * Software engineering by Intevation GmbH
teichmann@5863:  *
teichmann@5863:  * This file is Free Software under the GNU AGPL (>=v3) 
teichmann@5863:  * and comes with ABSOLUTELY NO WARRANTY! Check out the
teichmann@5863:  * documentation coming with Dive4Elements River for details. 
teichmann@5863:  */
teichmann@5863: 
teichmann@5831: package org.dive4elements.river.artifacts.states.minfo;
raimund@3614: 
raimund@3614: import java.util.List;
raimund@3614: 
raimund@3614: import org.w3c.dom.Element;
raimund@3614: 
teichmann@5831: import org.dive4elements.artifactdatabase.state.Facet;
teichmann@5831: import org.dive4elements.artifacts.Artifact;
teichmann@5831: import org.dive4elements.artifacts.CallContext;
teichmann@5831: import org.dive4elements.artifacts.common.utils.XMLUtils;
teichmann@5831: import org.dive4elements.artifacts.common.utils.XMLUtils.ElementCreator;
teichmann@5867: import org.dive4elements.river.artifacts.D4EArtifact;
teichmann@5831: import org.dive4elements.river.artifacts.access.BedHeightAccess;
teichmann@5831: import org.dive4elements.river.artifacts.states.DefaultState;
teichmann@5831: import org.dive4elements.river.utils.StringUtil;
raimund@3614: 
raimund@3614: /**
raimund@3614:  * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a>
raimund@3614:  */
raimund@3614: public class DifferenceSelect extends DefaultState {
raimund@3614: 
raimund@3614:     /**
raimund@3614:      * The default constructor that initializes an empty State object.
raimund@3614:      */
raimund@3614:     public DifferenceSelect() {
raimund@3614:     }
raimund@3614:     /**
raimund@3614:      *  Specify to display nothing (this is kind of a "final" state).
raimund@3614:      */
raimund@3614:     @Override
raimund@3614:     protected String getUIProvider() {
raimund@3614:         return "bedheights_twin_panel";
raimund@3614:     }
raimund@3614: 
raimund@3614:     /**
raimund@3614:      * Overridden to do nothing.
raimund@3614:      */
raimund@3614:     @Override
raimund@3614:     public Object computeAdvance(
teichmann@5867:         D4EArtifact artifact,
raimund@3614:         String       hash,
raimund@3614:         CallContext  context,
raimund@3614:         List<Facet>  facets,
raimund@3614:         Object       old
raimund@3614:     ) {
raimund@3614:         //Get data and do stuff, do not calculate
raimund@3614:         return "";
raimund@3614:     }
raimund@3614: 
raimund@3614:     @Override
raimund@3614:     protected Element[] createItems(
raimund@3614:         XMLUtils.ElementCreator ec,
raimund@3614:         Artifact                artifact,
raimund@3614:         String                  name,
raimund@3614:         CallContext             context)
raimund@3614:     {
raimund@3614:         Element[] elements = new Element[1];
teichmann@5867:         BedHeightAccess bha = new BedHeightAccess((D4EArtifact)artifact, context);
raimund@3614:         String time = bha.getYearEpoch();
raimund@3614:         elements[0] = createItem(
raimund@3614:             ec,
raimund@3614:             new String[] {"year-epoch", time});
raimund@3614: 
raimund@3614:         return elements;
raimund@3614:     }
raimund@3614: 
raimund@3614:     /**
raimund@3614:      * Creates the data element used for the static part of DESCRIBE document.
raimund@3614:      */
raimund@3614:     @Override
raimund@3614:     protected Element createStaticData(
teichmann@5867:         D4EArtifact   flys,
raimund@3614:         ElementCreator creator,
raimund@3614:         CallContext    cc,
raimund@3614:         String         name,
raimund@3614:         String         value,
raimund@3614:         String         type
raimund@3614:     ) {
raimund@3614:         Element dataElement = creator.create("data");
raimund@3614:         creator.addAttr(dataElement, "name", name, true);
raimund@3614:         creator.addAttr(dataElement, "type", type, true);
raimund@3614: 
raimund@3614:         Element itemElement = creator.create("item");
raimund@3614:         creator.addAttr(itemElement, "value", value, true);
raimund@3614: 
raimund@3614:         String[] labels = getLabels(cc, value);
raimund@3614: 
raimund@3614:         creator.addAttr(
raimund@3614:             itemElement,
raimund@3614:             "label",
raimund@3614:             labels[0],
raimund@3614:             true);
raimund@3614:         dataElement.appendChild(itemElement);
raimund@3614: 
raimund@3614:         return dataElement;
raimund@3614:     }
raimund@3614: 
raimund@3614: 
raimund@3614:     /**
raimund@3614:      * Get name to display for selected watelerlevels (for example "Q=123")
raimund@3614:      * from the CalculationResult.
raimund@3614:      */
raimund@3614:     public static String[] getLabels(CallContext cc, String value) {
raimund@3614:         String[] recommendations = value.split("#");
raimund@3614:         String displayString = "";
raimund@3614: 
raimund@3614:         // Walk over all selected recommendations and create label
raimund@3614:         for (int i = 0; i < recommendations.length; i+=2) {
raimund@3614:             String[] minuendParts = StringUtil
raimund@3614:                 .unbracket(recommendations[i+0])
raimund@3614:                 .split(";");
raimund@3614:             if(minuendParts.length >= 4) {
raimund@3614:                 displayString += "(" + minuendParts[3];
raimund@3614:             }
raimund@3614:             else {
raimund@3614:                 displayString += "([error]";
raimund@3614:             }
raimund@3614: 
raimund@3614:             displayString += " - ";
raimund@3614: 
raimund@3614:             String[] subtrahendParts = StringUtil
raimund@3614:                 .unbracket(recommendations[i+1])
raimund@3614:                 .split(";");
raimund@3614:             if(subtrahendParts.length >= 4) {
raimund@3614:                 displayString += subtrahendParts[3] + ") ";
raimund@3614:             }
raimund@3614:             else {
raimund@3614:                 displayString += "[error])";
raimund@3614:             }
raimund@3614:         }
raimund@3614: 
raimund@3614:         return new String[] { displayString };
raimund@3614:     }
raimund@3614: }
raimund@3614: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :