starting to reverse geocoding

WebContent/OSRM.JSONP.js

@@ -9,8 +9,8 @@ OSRM.JSONP = {
 	
 	TIMEOUT: OSRM.DEFAULTS.JSONP_TIMEOUT,
 	
-	late: function() { console.log("reply too late");},
+	late: function() { },//console.log("reply too late");},
-	empty: function() { console.log("empty callback");},
+	empty: function() { },//console.log("empty callback");},
 		
 	call: function(source, callback_function, timeout_function, timeout, id) {
 		// only one active JSONP call per id

WebContent/geocoder.js

@@ -1,9 +1,70 @@
 // some constants
 OSRM.GEOCODE_POST = 'http://nominatim.openstreetmap.org/search?format=json';
+OSRM.REVERSE_GEOCODE_POST = 'http://nominatim.openstreetmap.org/reverse?format=json';
 OSRM.SOURCE_MARKER_LABEL = "source";
 OSRM.TARGET_MARKER_LABEL = "target";
 
 
+// update locations in input boxes
+function updateLocations() {
+	if( my_markers.route[0] && my_markers.route[0].label == OSRM.SOURCE_MARKER_LABEL) {
+		document.getElementById("input-source-name").value = my_markers.route[0].getPosition().lat.toFixed(6) + ", " + my_markers.route[0].getPosition().lng.toFixed(6);
+		callReverseGeocoder("source", my_markers.route[0].getPosition().lat, my_markers.route[0].getPosition().lng);
+		OSRM.debug.log("[call1] reverse geocoder");
+	}
+	
+//	if( my_markers.route[my_markers.route.length-1] && my_markers.route[ my_markers.route.length-1 ].label == OSRM.TARGET_MARKER_LABEL) {
+//		document.getElementById("input-target-name").value = my_markers.route[my_markers.route.length-1].getPosition().lat.toFixed(6) + ", " + my_markers.route[my_markers.route.length-1].getPosition().lng.toFixed(6);
+//		callReverseGeocoder("target", my_markers.route[my_markers.route.length-1].getPosition().lat, my_markers.route[my_markers.route.length-1].getPosition().lng);
+//	}
+}
+
+
+function timeout_ReverseGeocoder() {
+	OSRM.debug.log("[timeout] reverse geocoder");
+}
+
+//prepare request and call reverse geocoder
+function callReverseGeocoder(marker_id, lat, lon) {
+	//build request
+	if (marker_id == OSRM.SOURCE_MARKER_LABEL) {
+		var src= OSRM.REVERSE_GEOCODE_POST + "&lat=" + lat + "&lon=" + lon;
+		OSRM.JSONP.call( src, showReverseGeocoderResults_Source, timeout_ReverseGeocoder, OSRM.JSONP.TIMEOUT, "reverse_geocoder_source" );
+		OSRM.debug.log("[call2] reverse geocoder");
+	} else if (marker_id == OSRM.TARGET_MARKER_LABEL) {
+		var src = OSRM.REVERSE_GEOCODE_POST + "&lat=" + lat + "&lon=" + lon;
+		OSRM.JSONP.call( src, showReverseGeocoderResults_Target, timeout_ReverseGeocoder, OSRM.JSONP.TIMEOUT, "reverse_geocoder_target" );
+	}
+}
+//processing JSONP response of reverse geocoder
+//(with wrapper functions for source/target jsonp)
+function showReverseGeocoderResults_Source(response) {	showReverseGeocoderResults(OSRM.SOURCE_MARKER_LABEL, response); }
+function showReverseGeocoderResults_Target(response) {	showReverseGeocoderResults(OSRM.TARGET_MARKER_LABEL, response); }
+function showReverseGeocoderResults(marker_id, response) {
+	OSRM.debug.log("[inner] reverse geocoder");
+	if(response){
+		if(response.address == undefined)
+			return;
+
+		var address = "";
+		if( response.address.road)
+			address += response.address.road;	
+		if( response.address.city) {
+			if( response.address.road)
+				address += ", ";
+			address += response.address.city;
+		}
+		if( address == "" )
+			return;
+		
+		if(marker_id == OSRM.SOURCE_MARKER_LABEL)
+			document.getElementById("input-source-name").value = address;
+		else if(marker_id == OSRM.TARGET_MARKER_LABEL)
+			document.getElementById("input-target-name").value = address;
+	}
+}
+
+
 // prepare request and call geocoder
 function callGeocoder(marker_id, query) {
 	//build request

WebContent/main.html

@@ -23,7 +23,7 @@
 
 <script src="OSRM.base.js"></script>
 <script src="OSRM.config.js"></script>
-<!-- <script defer="defer" src="OSRM.debug.js"></script> -->
+<script defer="defer" src="OSRM.debug.js"></script>
 
 <script src="OSRM.Browser.js"></script>
 <script src="OSRM.GUI.js"></script>

WebContent/routing.js

@@ -85,6 +85,7 @@ function showRoute(response) {
 		snapRoute();
 	}
 	updateHints(response);
+	updateLocations();
 }
 
 function showNoRouteGeometry() {
@@ -346,6 +347,12 @@ function positionsToInput() {
 }
 
 function reverseRouting() {
+	// invert input boxes
+	var tmp = document.getElementById("input-source-name").value;
+	document.getElementById("input-source-name").value = document.getElementById("input-target-name").value;
+	document.getElementById("input-target-name").value = tmp;
+	
+	// invert route
 	my_markers.route.reverse();
 	if(my_markers.route.length == 1) {
 		if(my_markers.route[0].label == OSRM.TARGET_MARKER_LABEL) {
@@ -362,6 +369,8 @@ function reverseRouting() {
 		my_markers.route[my_markers.route.length-1].label = OSRM.TARGET_MARKER_LABEL;
 		my_markers.route[my_markers.route.length-1].marker.setIcon( new L.Icon('images/marker-target.png') );		
 	}
+	
+	// recompute route
 	getRoute(OSRM.FULL_DESCRIPTION);
 	my_markers.highlight.hide();
 }