--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/flys-artifacts/src/main/java/de/intevation/flys/artifacts/ManualPointsArtifact.java	Fri Sep 28 12:14:35 2012 +0200
@@ -0,0 +1,168 @@
+package de.intevation.flys.artifacts;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import java.awt.geom.Point2D;
+
+import org.apache.log4j.Logger;
+
+import org.w3c.dom.Document;
+
+import org.json.JSONArray;
+import org.json.JSONException;
+
+import de.intevation.artifactdatabase.state.Facet;
+
+import de.intevation.artifacts.Artifact;
+import de.intevation.artifacts.ArtifactFactory;
+import de.intevation.artifacts.CallMeta;
+
+import de.intevation.flys.artifacts.model.FacetTypes;
+
+import de.intevation.flys.artifacts.states.DefaultState;
+
+import de.intevation.flys.model.FastCrossSectionLine;
+
+import de.intevation.flys.artifacts.geom.Lines;
+
+
+/**
+ * Artifact to store user-added points and water lines.
+ */
+public class ManualPointsArtifact
+extends      StaticFLYSArtifact
+implements   FacetTypes, WaterLineArtifact
+{
+    /** The logger for this class. */
+    private static Logger logger = Logger.getLogger(ManualPointsArtifact.class);
+
+    /** The name of the artifact. */
+    public static final String ARTIFACT_NAME = "manualpoints";
+
+
+    /**
+     * Trivial Constructor.
+     */
+    public ManualPointsArtifact() {
+        logger.debug("ManualPointsArtifact.ManualPointsArtifact()");
+    }
+
+
+    /**
+     * Gets called from factory, to set things up.
+     */
+    @Override
+    public void setup(
+        String          identifier,
+        ArtifactFactory factory,
+        Object          context,
+        CallMeta        callMeta,
+        Document        data)
+    {
+        logger.debug("ManualPointsArtifact.setup");
+        super.setup(identifier, factory, context, callMeta, data);
+        initialize(null, context, callMeta);
+    }
+
+
+    /** Return the name of this artifact. */
+    public String getName() {
+        return ARTIFACT_NAME;
+    }
+
+
+    /** Access state data storing the jsonstring with points. */
+    public String getPointsData(String facetName) {
+        return getDataAsString(facetName + ".data");
+    }
+
+
+    /**
+     * Access state data storing the jsonstring with lines.
+     * @param facetName Name of facet or null if the so far
+     *                  only known case should be picked.
+     * @return (String) value of data element (expect json).
+     */
+    public String getLinesData(String facetName) {
+        if (facetName == null)
+            return getDataAsString("cross_section.manualpoints.lines");
+        // TODO .lineS?
+        return getDataAsString(facetName + ".line");
+    }
+
+
+    /** Setup state and facet. */
+    @Override
+    protected void initialize(Artifact artifact, Object context, CallMeta meta) {
+        logger.debug("ManualPointsArtifact.initialize");
+        List<Facet> fs = new ArrayList<Facet>();
+
+        DefaultState state = (DefaultState) getCurrentState(context);
+        state.computeInit(this, hash(), context, meta, fs);
+        if (!fs.isEmpty()) {
+            logger.debug("Facets to add in ManualPointsArtifact.initialize .");
+            facets.put(getCurrentStateId(), fs);
+        }
+        else {
+            logger.debug("No facets to add in ManualPointsArtifact.initialize ("
+                + state.getID() + ").");
+        }
+    }
+
+
+    /**
+     * Get value of line at index.
+     * @param index index in json array defining lines.
+     * @return water height of line at given index.
+     */
+    protected double getLine(int index) {
+        try {
+            JSONArray lines = new JSONArray((String) getLinesData(null));
+            JSONArray array = lines.getJSONArray(index);
+
+            return array.getDouble(0);
+        }
+        catch(JSONException e){
+            logger.error("Could not decode json for line.");
+            return 0d;
+        }
+    }
+
+
+    /**
+     * Get the water line "surface".
+     * @param index index of facets data.
+     * @param csl 'ground' against which to determine water surface.
+     * @param a (ignored in this implementation).
+     * @param b (ignored in this implementation).
+     */
+    @Override
+    public Lines.LineData getWaterLines(
+        int                  index,
+        FastCrossSectionLine csl,
+        double a, double b
+    ) {
+        List<Point2D> points = csl.getPoints();
+        return Lines.createWaterLines(points, getLine(index));
+    }
+
+    /**
+     * Determines Facets initial disposition regarding activity (think of
+     * selection in Client ThemeList GUI). This will be checked one time
+     * when the facet enters a collections describe document.
+     *
+     * @param facetName name of the facet.
+     * @param index     index of the facet.
+     * @return 0 if not active
+     */
+    @Override
+    public int getInitialFacetActivity(
+        String outputName,
+        String facetName,
+        int index)
+    {
+        return 1;
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :