alternatives work - sort of

WebContent/base/osrm/OSRM.Marker.js

@@ -81,6 +81,8 @@ OSRM.RouteMarker = function ( label, style, position ) {
 OSRM.inheritFrom( OSRM.RouteMarker, OSRM.Marker );
 OSRM.extend( OSRM.RouteMarker, {
 onClick: function(e) {
+	OSRM.RoutingAlternatives.reset();
+	
 	for( var i=0; i<OSRM.G.markers.route.length; i++) {
 		if( OSRM.G.markers.route[i].marker === this ) {
 			OSRM.G.markers.removeMarker( i );
@@ -102,6 +104,8 @@ onDragStart: function(e) {
 	OSRM.G.dragging = true;
 	this.switchIcon(this.options.dragicon);
 	
+	OSRM.RoutingAlternatives.reset();
+	
 	// store id of dragged marker
 	for( var i=0; i<OSRM.G.markers.route.length; i++)
 		if( OSRM.G.markers.route[i].marker === this ) {

WebContent/gui/OSRM.RoutingGUI.js

@@ -59,6 +59,8 @@ resetRouting: function() {
 	document.getElementById('gui-input-source').value = "";
 	document.getElementById('gui-input-target').value = "";
 	
+	OSRM.RoutingAlternatives.reset();
+	
 	OSRM.G.route.reset();
 	OSRM.G.markers.reset();
 	
@@ -75,6 +77,8 @@ reverseRouting: function() {
 	document.getElementById("gui-input-source").value = document.getElementById("gui-input-target").value;
 	document.getElementById("gui-input-target").value = tmp;
 	
+	OSRM.RoutingAlternatives.reset();
+	
 	// recompute route if needed
 	if( OSRM.G.route.isShown() ) {
 		OSRM.G.markers.route.reverse();
@@ -102,6 +106,8 @@ showMarker: function(marker_id) {
 
 // changed: any inputbox (is called when enter is pressed [after] or focus is lost [before])
 inputChanged: function(marker_id) {
+	OSRM.RoutingAlternatives.reset();
+	
 	if( marker_id == OSRM.C.SOURCE_LABEL)	
 		OSRM.Geocoder.call(OSRM.C.SOURCE_LABEL, document.getElementById('gui-input-source').value);
 	else if( marker_id == OSRM.C.TARGET_LABEL)
@@ -144,6 +150,8 @@ deleteMarker: function(marker_id) {
 	if( id == null)
 		return;
 	
+	OSRM.RoutingAlternatives.reset();
+	
 	OSRM.G.markers.removeMarker( id );
 	OSRM.Routing.getRoute();
 	OSRM.G.markers.highlight.hide();	

WebContent/routing/OSRM.Routing.js

@@ -65,10 +65,11 @@ showRoute: function(response) {
 		OSRM.RoutingDescription.showNA( OSRM.loc("NO_ROUTE_FOUND") );
 		OSRM.Routing._snapRoute();		
 	} else {
-		OSRM.RoutingGeometry.show(response);
+		OSRM.RoutingAlternatives.init(OSRM.G.response);
-		OSRM.RoutingNoNames.show(response);
+		OSRM.RoutingGeometry.show(OSRM.G.response);
-		OSRM.RoutingDescription.show(response);
+		OSRM.RoutingNoNames.show(OSRM.G.response);
-		OSRM.RoutingAlternatives.prepare(response);
+		OSRM.RoutingDescription.show(OSRM.G.response);
+		OSRM.RoutingAlternatives._drawGUI();
 		OSRM.Routing._snapRoute();
 	}
 	OSRM.Routing._updateHints(response);
@@ -96,12 +97,11 @@ showRoute_Redraw: function(response) {
 	if(!response)
 		return;
 	
-	//OSRM.G.response = response;	// not needed, even harmful as important information is not stored!
+	OSRM.G.response = response;	// not needed, even harmful as important information is not stored! ????
-	//OSRM.RoutingAlternatives.prepare_Redraw(response);
 	if(response.status != 207) {
-		OSRM.RoutingAlternatives.prepare_Redraw(response);
+		OSRM.RoutingAlternatives.init(OSRM.G.response);
 		OSRM.RoutingGeometry.show(OSRM.G.response);
-		OSRM.RoutingNoNames.show(OSRM.Gresponse);		
+		OSRM.RoutingNoNames.show(OSRM.G.response);		
 	}
 	OSRM.Routing._updateHints(response);
 },

WebContent/routing/OSRM.RoutingAlternatives.js

@@ -30,6 +30,33 @@ _buttons: [
 ],
 
 
+// reset stored values
+reset: function() {
+	OSRM.G.active_alternative = 0;
+	OSRM.G.alternative_count = 0;
+},
+
+// restructure response data  
+init: function(response) {
+	// move best route to alternative array
+	var the_response = OSRM.G.response;
+	the_response.alternative_geometries.unshift( response.route_geometry );
+	the_response.alternative_instructions.unshift( response.route_instructions );
+	the_response.alternative_summaries.unshift( response.route_summary );
+	
+	// update basic information
+	OSRM.G.alternative_count = response.alternative_geometries.length;
+	if( OSRM.G.active_alternative == undefined )
+		OSRM.G.active_alternative = 0;
+	if( OSRM.G.active_alternative > OSRM.G.alternative_count - 1 )
+		OSRM.G.active_alternative = 0;
+	
+	// switch data
+	the_response.route_geometry = the_response.alternative_geometries[OSRM.G.active_alternative];
+	the_response.route_instructions = the_response.alternative_instructions[OSRM.G.active_alternative];
+	the_response.route_summary = the_response.alternative_summaries[OSRM.G.active_alternative];	
+},
+
 // prepare using alternatives
 prepare: function(response) {
 	// store basic information