--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/flys-artifacts/src/main/java/org/dive4elements/river/artifacts/states/CalculationSelectMinfo.java	Thu Apr 25 12:06:39 2013 +0200
@@ -0,0 +1,109 @@
+package org.dive4elements.river.artifacts.states;
+
+import org.apache.log4j.Logger;
+
+import org.w3c.dom.Element;
+
+import org.dive4elements.artifacts.Artifact;
+import org.dive4elements.artifacts.CallContext;
+import org.dive4elements.artifacts.CallMeta;
+
+import org.dive4elements.artifacts.common.utils.XMLUtils;
+
+import org.dive4elements.artifactdatabase.data.StateData;
+
+import org.dive4elements.river.artifacts.FLYSArtifact;
+import org.dive4elements.river.artifacts.resources.Resources;
+
+/**
+ * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
+ */
+public class CalculationSelectMinfo extends DefaultState {
+
+    /** The logger that is used in this class. */
+    private static Logger logger = Logger.getLogger(CalculationSelectMinfo.class);
+
+
+    public static final String FIELD_MODE = "calculation_mode";
+
+    public static final String CALC_BED_MIDDLE    = "calc.bed.middle";
+    public static final String CALC_BED_DIFF      = "calc.bed.diff";
+    public static final String CALC_BED_QUALITY   = "calc.bed.quality";
+    public static final String CALC_SEDIMENT_LOAD = "calc.sediment.load";
+    public static final String CALC_FLOW_VELOCITY = "calc.flow.velocity";
+    public static final String CALC_SQ_RELATION   = "calc.sq.relation";
+
+    /** An array that holds all available calculation modes. */
+    public static final String[] CALCULATIONS = {
+        CALC_BED_MIDDLE,
+        CALC_BED_DIFF,
+        CALC_BED_QUALITY,
+        CALC_SEDIMENT_LOAD,
+        CALC_FLOW_VELOCITY,
+        CALC_SQ_RELATION
+    };
+
+
+    /** Error message that is thrown if no mode has been chosen. */
+    public static final String ERROR_NO_CALCULATION_MODE =
+        "error_feed_no_calculation_mode";
+
+    /** Error message that is thrown if an invalid calculation mode has been
+     * chosen. */
+    public static  final String ERROR_INVALID_CALCULATION_MODE =
+        "error_feed_invalid_calculation_mode";
+
+
+    public CalculationSelectMinfo() {
+    }
+
+
+    @Override
+    protected Element[] createItems(
+        XMLUtils.ElementCreator cr,
+        Artifact    artifact,
+        String      name,
+        CallContext context)
+    {
+        CallMeta meta   = context.getMeta();
+        Element[] calcs = new Element[CALCULATIONS.length];
+
+        for (int i = 0; i < CALCULATIONS.length; ++i) {
+            String calc = CALCULATIONS[i];
+            calcs[i] = createItem(
+                cr, new String[] {
+                    Resources.getMsg(meta, calc, calc),
+                    calc
+                });
+        }
+
+        return calcs;
+    }
+
+
+    @Override
+    public boolean validate(Artifact artifact)
+    throws IllegalArgumentException
+    {
+        logger.debug("CalculationSelect.validate");
+        FLYSArtifact flys = (FLYSArtifact) artifact;
+
+        StateData data = getData(flys, FIELD_MODE);
+        String    calc = (data != null) ? (String) data.getValue() : null;
+
+        if (calc == null) {
+            throw new IllegalArgumentException(ERROR_NO_CALCULATION_MODE);
+        }
+
+        calc = calc.trim().toLowerCase();
+
+        for (String mode: CALCULATIONS) {
+            if (mode.equals(calc)) {
+                return true;
+            }
+        }
+
+        throw new IllegalArgumentException(ERROR_INVALID_CALCULATION_MODE);
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :