--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gwt-client/src/main/java/org/dive4elements/river/client/shared/model/DefaultArtifactDescription.java	Thu Apr 25 15:23:37 2013 +0200
@@ -0,0 +1,183 @@
+package org.dive4elements.river.client.shared.model;
+
+import java.util.List;
+
+import org.dive4elements.river.client.shared.DoubleUtils;
+
+
+/**
+ * The default implementation of an {@link ArtifactDescription}. This class just
+ * implements constructors to create new instances and the necessary methods of
+ * the interface.
+ *
+ * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
+ */
+public class DefaultArtifactDescription implements ArtifactDescription {
+
+    /** Data that have been inserted in former states.*/
+    protected DataList[] oldData;
+
+    /** The Data that is allowed to be inserted in the current state.*/
+    protected DataList currentData;
+
+    /** The current state name.*/
+    protected String   currentState;
+
+    /** The names of reachable states.*/
+    protected String[] reachableStates;
+
+    /** The output modes of this state.*/
+    protected OutputMode[] outputModes;
+
+    /** A list of recommendations suggested by the server.*/
+    protected Recommendation[] recommendations;
+
+
+    public DefaultArtifactDescription() {
+    }
+
+
+    /**
+     * The default constructor.
+     *
+     * @param old The data that have been inserted in former states.
+     * @param current The data that might be inserted in the current state.
+     * @param state The name of the current state.
+     * @param reachableStates The names of the reachable states.
+     */
+    public DefaultArtifactDescription(
+        DataList[]   old,
+        DataList     current,
+        String       state,
+        String[]     reachableStates)
+    {
+        this.oldData         = old;
+        this.currentData     = current;
+        this.currentState    = state;
+        this.reachableStates = reachableStates;
+    }
+
+
+    /**
+     * The default constructor.
+     *
+     * @param old The data that have been inserted in former states.
+     * @param current The data that might be inserted in the current state.
+     * @param state The name of the current state.
+     * @param reachableStates The names of the reachable states.
+     * @param outputModes The available output modes of this artifact.
+     */
+    public DefaultArtifactDescription(
+        DataList[]       old,
+        DataList         current,
+        String           state,
+        String[]         reachableStates,
+        OutputMode[]     outputModes,
+        Recommendation[] recommendations)
+    {
+        this(old, current, state, reachableStates);
+        this.outputModes     = outputModes;
+        this.recommendations = recommendations;
+    }
+
+
+    public DataList[] getOldData() {
+        return oldData;
+    }
+
+
+    public DataList getCurrentData() {
+        return currentData;
+    }
+
+
+    public String getCurrentState() {
+        return currentState;
+    }
+
+
+    public String[] getReachableStates() {
+        return reachableStates;
+    }
+
+
+    public OutputMode[] getOutputModes() {
+        return outputModes;
+    }
+
+
+    public Recommendation[] getRecommendations() {
+        return recommendations;
+    }
+
+
+    public String getRiver() {
+        return getDataValueAsString("river");
+    }
+
+
+    /** Get [min,max] of data items. */
+    public double[] getKMRange() {
+        Double[] mm = new Double[2];
+
+        for (DataList list: oldData) {
+            List<Data> dataList = list.getAll();
+
+            for (Data data: dataList) {
+                String dataName = data.getLabel();
+                DataItem item   = data.getItems()[0];
+
+                if (dataName.equals("ld_from") || dataName.equals("from")) {
+                    Double d = DoubleUtils.getDouble(item.getStringValue());
+
+                    if (d != null) {
+                        mm[0] = d;
+                    }
+                }
+                else if (dataName.equals("ld_to") || dataName.equals("to")) {
+                    Double d = DoubleUtils.getDouble(item.getStringValue());
+
+                    if (d != null) {
+                        mm[1] = d;
+                    }
+                }
+                else if (dataName.equals("ld_locations")) {
+                    return DoubleUtils.getMinMax(item.getStringValue());
+                }
+            }
+
+            if (mm[0] != null && mm[1] != null) {
+                return new double[] { mm[0], mm[1] };
+            }
+        }
+
+        return null;
+    }
+
+
+    public String getReferenceGauge() {
+        return getDataValueAsString("reference_gauge");
+    }
+
+
+    public String getDataValueAsString(String name) {
+        if (oldData == null) {
+            return null;
+        }
+        for (DataList list: oldData) {
+            List<Data> dataList = list.getAll();
+
+            for (Data d: dataList) {
+                String dataName = d.getLabel();
+                DataItem item   = d.getItems()[0];
+
+                if (dataName.equals(name)) {
+                    return item.getStringValue();
+                }
+            }
+        }
+
+        return null;
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :