TileLoader/TileDataSource: add cancel() method

- used to force closing sockets when changing theme or tilesource

vtm-jeo/src/org/oscim/layers/JeoTileLayer.java

@@ -1,34 +0,0 @@
-package org.oscim.layers;
-
-import org.oscim.layers.tile.MapTile;
-import org.oscim.layers.tile.TileLoader;
-import org.oscim.layers.tile.bitmap.BitmapTileLayer;
-import org.oscim.map.Map;
-import org.oscim.tiling.source.bitmap.BitmapTileSource;
-
-public class JeoTileLayer extends BitmapTileLayer {
-
-	public JeoTileLayer(Map map, BitmapTileSource tileSource) {
-		super(map, tileSource);
-	}
-
-	@Override
-	protected TileLoader createLoader() {
-		return new TileLoader(this.getManager()) {
-
-			@Override
-			public void cleanup() {
-				// TODO Auto-generated method stub
-
-			}
-
-			@Override
-			protected boolean loadTile(MapTile tile) {
-				// TODO Auto-generated method stub
-				return false;
-			}
-
-		};
-	}
-
-}

vtm-jeo/src/org/oscim/layers/JeoTileSource.java

@@ -61,9 +61,15 @@ public class JeoTileSource extends TileSource {
 			}
 
 			@Override
-			public void destroy() {
+			public void dispose() {
 
 			}
+
+			@Override
+			public void cancel() {
+
+			}
+
 		};
 	}