--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java/de/intevation/mxd/reader/GroupLayerReader.java	Thu Jun 30 14:59:44 2011 +0200
@@ -0,0 +1,157 @@
+package de.intevation.mxd.reader;
+
+import java.io.IOException;
+
+import org.apache.log4j.Logger;
+
+import com.esri.arcgis.carto.ILayer;
+import com.esri.arcgis.carto.FeatureLayer;
+import com.esri.arcgis.carto.GdbRasterCatalogLayer;
+import com.esri.arcgis.carto.IFeatureRenderer;
+import com.esri.arcgis.carto.SimpleRenderer;
+import com.esri.arcgis.carto.ClassBreaksRenderer;
+import com.esri.arcgis.carto.UniqueValueRenderer;
+import com.esri.arcgis.carto.GroupLayer;
+
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+
+import de.intevation.mxd.ArcGISInitializer;
+import de.intevation.mxd.utils.MapToXMLUtils;
+
+
+/**
+ * Reads Layer information.
+ *
+ * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a>
+ */
+public class GroupLayerReader
+implements ILayerReader {
+
+    /**
+     * The logger.
+     */
+    private static final Logger logger =
+        Logger.getLogger(FeatureLayerReader.class);
+
+    /**
+     * Privte member.
+     */
+    private GroupLayer  layer;
+    private MapToXMLUtils util;
+    private int invalidLayerCount;
+
+    public GroupLayerReader(ILayer layer)
+    throws Exception {
+        if(layer instanceof GroupLayer) {
+            this.layer = (GroupLayer)layer;
+            invalidLayerCount = 0;
+        }
+        else {
+            throw new Exception("Not an instance of GroupLayer: " +
+                layer.getClass().toString());
+        }
+    }
+
+    /**
+     * Setter for XML document helper.
+     *
+     * @param util The helper for storing map information.
+     */
+    public void setUtil(MapToXMLUtils util) {
+        this.util = util;
+    }
+
+    /**
+     * Reads the Layer content.
+     *
+     * @return The layer XML element.
+     */
+    public Element read()
+    throws IOException{
+        logger.debug("read()");
+	Element layerElement = null;
+        for(int i = 0; i < layer.getCount();i++) {
+            ILayer lay = layer.getLayer(i);
+            try {
+                if (lay instanceof FeatureLayer) {
+                    FeatureLayerReader lr = new FeatureLayerReader(lay);
+                    lr.setUtil(util);
+                    layerElement = lr.read();
+                    if (layerElement == null) {
+                        continue;
+                    }
+		    layerElement.setAttribute("group", layer.getName());
+                    IFeatureRenderer renderer =
+                        ((FeatureLayer)lay).getRenderer();
+                    IRendererReader rreader;
+                    if(renderer instanceof SimpleRenderer) {
+                        rreader = new SimpleRendererReader(renderer);
+                        rreader.setParent(layerElement);
+                        rreader.setUtil(util);
+                        rreader.read();
+                    }
+                    else if(renderer instanceof ClassBreaksRenderer) {
+                        rreader = new ClassBreakRendererReader(renderer);
+                        rreader.setParent(layerElement);
+                        rreader.setUtil(util);
+                        rreader.read();
+                    }
+                    else if(renderer instanceof UniqueValueRenderer) {
+                        rreader = new UniqueValueRendererReader(renderer);
+                        rreader.setParent(layerElement);
+                        rreader.setUtil(util);
+                        rreader.read();
+                    }
+                    else{
+                        logger.debug("Not a known renderer type " +
+                                     renderer.getClass().toString());
+                    }
+                }
+                else if(lay instanceof GdbRasterCatalogLayer) {
+                    GdbRasterCatalogLayerReader gclr =
+                        new GdbRasterCatalogLayerReader(lay);
+                    gclr.setUtil(util);
+                    layerElement = gclr.read();
+		    layerElement.setAttribute("group", layer.getName());
+                    IFeatureRenderer renderer =
+                        ((GdbRasterCatalogLayer)lay).getRenderer();
+                    IRendererReader rreader;
+                    if(renderer instanceof SimpleRenderer) {
+                        rreader = new SimpleRendererReader(renderer);
+                        rreader.setParent(layerElement);
+                        rreader.setUtil(util);
+                        rreader.read();
+                    }
+                    else if(renderer instanceof ClassBreaksRenderer) {
+                        rreader = new ClassBreakRendererReader(renderer);
+                        rreader.setParent(layerElement);
+                        rreader.setUtil(util);
+                        rreader.read();
+                    }
+                    else if(renderer instanceof UniqueValueRenderer) {
+                        rreader = new UniqueValueRendererReader(renderer);
+                        rreader.setParent(layerElement);
+                        rreader.setUtil(util);
+                        rreader.read();
+                    }
+                    else {
+                        logger.debug("Not a known renderer type " +
+                                     renderer.getClass().toString());
+                    }
+                }
+	    }
+	    catch(Exception e) {
+	        invalidLayerCount++;
+                if(i == 0 && (i + 1) == layer.getCount() ||
+                    invalidLayerCount == layer.getCount()) {
+                    throw new IOException(
+                        "No valid layer in MXD file." +
+                        " Aborting.");
+                }
+	    }
+	}
+	return layerElement;
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :