/* Tracking_roi.js
*	R Sarangi
* 2009/01/27
*/
function updateFormats() {
            var in_options = {
                'internalProjection': map.baseLayer.projection,
                'externalProjection': new OpenLayers.Projection("EPSG:4326")
            };   
            var out_options = {
                'internalProjection': map.baseLayer.projection,
                'externalProjection': new OpenLayers.Projection("EPSG:4326")
            };
            var gmlOptions = {
                featureType: "feature",
                featureNS: "http://roadsofindia.com/feature"
            };
            var gmlOptionsIn = OpenLayers.Util.extend(
                OpenLayers.Util.extend({}, gmlOptions),
                in_options
            );
            var gmlOptionsOut = OpenLayers.Util.extend(
                OpenLayers.Util.extend({}, gmlOptions),
                out_options
            );
            formats = {
              'in': {
                wkt: new OpenLayers.Format.WKT(in_options),
                geojson: new OpenLayers.Format.GeoJSON(in_options),
                georss: new OpenLayers.Format.GeoRSS(in_options),
                gml2: new OpenLayers.Format.GML.v2(gmlOptionsIn),
                gml3: new OpenLayers.Format.GML.v3(gmlOptionsIn),
                kml: new OpenLayers.Format.KML(in_options)
              }, 
              'out': {
                wkt: new OpenLayers.Format.WKT(out_options),
                geojson: new OpenLayers.Format.GeoJSON(out_options),
                georss: new OpenLayers.Format.GeoRSS(out_options),
                gml2: new OpenLayers.Format.GML.v2(gmlOptionsOut),
                gml3: new OpenLayers.Format.GML.v3(gmlOptionsOut),
                kml: new OpenLayers.Format.KML(out_options)
              } 
            };
        }
//function serialize(feature) {
//            var type = document.getElementById("formatType").value;
//            // second argument for pretty printing (geojson only)
//            var pretty = document.getElementById("prettyPrint").checked;
//            var str = formats['out'][type].write(feature, pretty);
//            // not a good idea in general, just for this demo
//            str = str.replace(/,/g, ', ');
//            document.getElementById('output').value = str;
//        }
 function deserialize() {
	        updateFormats();
            var element = document.getElementById('text');
            var type =  document.getElementById("formatType").value;
            var features = formats['in'][type].read(element.value);
            var bounds;
            if(features) {
                if(features.constructor != Array) {
                    features = [features];
                }
                for(var i=0; i<features.length; ++i) {
                    if (!bounds) {
                        bounds = features[i].geometry.getBounds();
                    } else {
                        bounds.extend(features[i].geometry.getBounds());
                    }

                }
                tracking_layer.addFeatures(features);
                map.zoomToExtent(bounds);
                var plural = (features.length > 1) ? 's' : '';
                element.value = features.length + ' feature' + plural + ' added'
            } else {
                element.value = 'Bad input ' + type;
            }
        }
//   // preload images
//        (function() {
//            var roots = ["draw_point", "draw_line", "draw_polygon", "pan"];
//            var onImages = [];
//            var offImages = [];
//            for(var i=0; i<roots.length; ++i) {
//                onImages[i] = new Image();
//                onImages[i].src = "./OpenLayers-2.7/theme/default/img/" + roots[i] + "_on.png";
//                offImages[i] = new Image();
//                offImages[i].src = "./OpenLayers-2.7/theme/default/img/" + roots[i] + "_on.png";
//            }
//        })();