--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/flys-artifacts/src/main/java/de/intevation/flys/exports/WDifferencesCurveGenerator.java	Fri Sep 09 10:07:14 2011 +0000
@@ -0,0 +1,147 @@
+package de.intevation.flys.exports;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.log4j.Logger;
+
+import org.jfree.chart.JFreeChart;
+import org.jfree.chart.axis.NumberAxis;
+import org.jfree.chart.axis.ValueAxis;
+import org.jfree.chart.plot.XYPlot;
+import org.jfree.chart.title.TextTitle;
+import org.jfree.data.Range;
+import org.jfree.data.xy.XYSeries;
+import org.jfree.data.xy.XYSeriesCollection;
+import org.jfree.ui.TextAnchor;
+
+import org.w3c.dom.Document;
+
+import de.intevation.artifacts.Artifact;
+
+import de.intevation.artifactdatabase.state.Facet;
+
+import de.intevation.flys.artifacts.FLYSArtifact;
+
+import de.intevation.flys.artifacts.model.FacetTypes;
+import de.intevation.flys.artifacts.model.WKms;
+import de.intevation.flys.artifacts.model.WQKms;
+
+import de.intevation.flys.model.Annotation;
+import de.intevation.flys.jfree.StickyAxisAnnotation;
+
+
+/**
+ * An OutGenerator that generates w differences curves.
+ */
+public class WDifferencesCurveGenerator
+extends      LongitudinalSectionGenerator
+implements   FacetTypes
+{
+    /** The logger that is used in this generator. */
+    private static Logger logger =
+        Logger.getLogger(WDifferencesCurveGenerator.class);
+
+    public static final String I18N_CHART_TITLE =
+        "chart.w_differences.title";
+
+    public static final String I18N_CHART_SUBTITLE =
+        "chart.w_differences.subtitle";
+
+    public static final String I18N_2YAXIS_LABEL =
+        "chart.w_differences.yaxis.second.label";
+
+    // TODO proper i18n.
+    public static final String I18N_CHART_TITLE_DEFAULT  = "W-Differenzen";
+    public static final String I18N_XAXIS_LABEL_DEFAULT  = "km";
+    public static final String I18N_YAXIS_LABEL_DEFAULT  = "W [NN + m]";
+
+
+    /**
+     * Add a subtitle to Chart.
+     * @param chart Chart to add subtitle to.
+     */
+    @Override
+    protected void addSubtitles(JFreeChart chart) {
+        String subtitle = msg(I18N_CHART_SUBTITLE, "");
+        chart.addSubtitle(new TextTitle(subtitle));
+    }
+
+
+    /**
+     * Add (themed) data for chart generation.
+     */
+    public void doOut(Artifact artifact, Facet facet, Document attr) {
+        String name = facet.getName();
+
+        logger.debug("WDifferencesCurveGenerator.doOut: " + name);
+
+        if (name == null) {
+            logger.error("No facet name for doOut(). No output generated!");
+            return;
+        }
+
+        FLYSArtifact flys = (FLYSArtifact) artifact;
+        Facet        f    = flys.getNativeFacet(facet);
+
+        if (f == null) {
+            return;
+        }
+
+        if (name.equals(W_DIFFERENCES)) {
+            doWDifferencesOut((WKms) f.getData(artifact, context), attr);
+        }
+        else {
+            logger.warn("Unknown facet name: " + name);
+            return;
+        }
+    }
+
+
+    /**
+     * Add items to dataseries which describes the differences.
+     */
+    protected void doWDifferencesOut(WKms wkms, Document theme) {
+        logger.debug("WDifferencesCurveGenerator.doWDifferencesOut");
+        if (wkms == null) {
+            logger.warn("No data to add to WDifferencesChart.");
+            return;
+        }
+
+       int size = wkms.size();
+       // TODO get series name
+       XYSeries series = new StyledXYSeries(getSeriesName(wkms, "delta"), theme);
+
+       if (logger.isDebugEnabled()) {
+           if (wkms.size() > 0) {
+               logger.debug("Generate series: " + series.getKey());
+               logger.debug("Start km: " + wkms.getKm(0));
+               logger.debug("End   km: " + wkms.getKm(size-1));
+               logger.debug("Values  : " + size);
+           }
+       }
+
+       for (int i = 0; i < size; i++) {
+           series.add(wkms.getKm(i), wkms.getW(i));
+       }
+
+       addFirstAxisSeries(series);
+    }
+
+
+    /**
+     * Get name of series (displayed in legend).
+     * @return name of the series.
+     */
+    protected String getSeriesName(WKms wqkms, String mode) {
+        String name   = wqkms.getName();
+        String prefix = (name != null && name.indexOf(mode) >= 0)
+                      ? null
+                      : mode;
+
+        return (prefix != null && prefix.length() > 0)
+                ? prefix + "(" + name +")"
+                : name;
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :