--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/flys-client/src/main/java/de/intevation/flys/client/server/CollectionHelper.java	Fri May 27 08:59:26 2011 +0000
@@ -0,0 +1,156 @@
+package de.intevation.flys.client.server;
+
+import java.util.List;
+import java.util.Map;
+
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+
+import de.intevation.artifacts.common.ArtifactNamespaceContext;
+import de.intevation.artifacts.common.utils.XMLUtils;
+import de.intevation.artifacts.common.utils.XMLUtils.ElementCreator;
+
+import de.intevation.flys.client.shared.model.Collection;
+import de.intevation.flys.client.shared.model.OutputMode;
+import de.intevation.flys.client.shared.model.Theme;
+import de.intevation.flys.client.shared.model.ThemeList;
+
+
+/**
+ * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
+ */
+public class CollectionHelper {
+
+    public static Document createAttribute(Collection collection) {
+        System.out.println("CollectionHelper.createAttribute");
+
+        Document doc = XMLUtils.newDocument();
+
+        ElementCreator cr = new ElementCreator(
+            doc,
+            ArtifactNamespaceContext.NAMESPACE_URI,
+            ArtifactNamespaceContext.NAMESPACE_PREFIX);
+
+        Element attr = cr.create("attribute");
+
+        doc.appendChild(attr);
+
+        Map<String, OutputMode> tmpOuts = collection.getOutputModes();
+
+        Element outs = createOutputElements(cr, collection, tmpOuts);
+
+        if (outs != null) {
+            attr.appendChild(outs);
+        }
+
+        return doc;
+    }
+
+
+    /**
+     * Creates a whole block with art:output nodes.
+     *
+     * @param cr The ElementCreator used to create new elements.
+     * @param c  The collection.
+     * @param modes The OutputModes that should be included.
+     *
+     * @return an element with output modes.
+     */
+    protected static Element createOutputElements(
+        ElementCreator          cr,
+        Collection              c,
+        Map<String, OutputMode> mmodes)
+    {
+        System.out.println("CollectionHelper.createOutputElements");
+
+        java.util.Collection<OutputMode> modes = mmodes != null
+            ? mmodes.values()
+            : null;
+
+        if (modes == null || modes.size() == 0) {
+            System.err.println("Collection has no modes: " + c.identifier());
+            return null;
+        }
+
+        Element outs = cr.create("outputs");
+
+        for (OutputMode mode: modes) {
+            Element out = createOutputElement(cr, c, mode);
+
+            if (out != null) {
+                outs.appendChild(out);
+            }
+        }
+
+        return outs;
+    }
+
+
+    /**
+     * Create a node art:output that further consist of art:theme nodes.
+     *
+     * @param cr The ElementCreator used to create new elements.
+     * @param c  The collection.
+     * @param mode The OutputMode.
+     *
+     * @return an element that represents an output mode with its themes.
+     */
+    protected static Element createOutputElement(
+        ElementCreator cr,
+        Collection     collection,
+        OutputMode     mode)
+    {
+        System.out.println("CollectionHelper.createOutputElement");
+
+        Element out = cr.create("output");
+        cr.addAttr(out, "name", mode.getName(), false);
+
+        ThemeList themeList = collection.getThemeList(mode.getName());
+        List<Theme> themes  = themeList != null ? themeList.getThemes() : null;
+
+        if (themes == null || themes.size() == 0) {
+            System.err.println("No themes for output mode: " + mode.getName());
+            return null;
+        }
+
+        for (Theme theme: themes) {
+            Element t = createThemeElement(cr, collection, theme);
+
+            if (t != null) {
+                out.appendChild(t);
+            }
+        }
+
+        return out;
+    }
+
+
+    /**
+     * Creates a theme node art:theme that represents a curve in a chart or map.
+     *
+     * @param cr The ElementCreator used to create new elements.
+     * @param collection The collection.
+     * @param theme The theme whose attributes should be written to an element.
+     *
+     * @return an element that contains the informtion of the given theme.
+     */
+    protected static Element createThemeElement(
+        ElementCreator cr,
+        Collection     collection,
+        Theme          theme)
+    {
+        if (theme == null) {
+            return null;
+        }
+
+        Element t = cr.create("theme");
+
+        cr.addAttr(t, "active", theme.isActive() ? "1" : "0", true);
+        cr.addAttr(t, "artifact", theme.getArtifact(), true);
+        cr.addAttr(t, "facet", theme.getFacet(), true);
+        cr.addAttr(t, "pos", Integer.toString(theme.getPosition()), true);
+
+        return t;
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :