309 lines
12 KiB
Text
309 lines
12 KiB
Text
/*
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osm.org routing interface
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*/
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var TURN_INSTRUCTIONS=[]
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var ROUTING_POLYLINE={
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color: '#03f',
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opacity: 0.3,
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weight: 10
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};
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var ROUTING_POLYLINE_HIGHLIGHT={
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color: '#ff0',
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opacity: 0.5,
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weight: 12
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};
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OSM.RoutingEngines={
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list: [],
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add: function(supportsHTTPS,engine) {
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if (document.location.protocol=="http:" || supportsHTTPS) this.list.push(engine);
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}
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};
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OSM.Routing=function(map,name,jqSearch) {
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var r={};
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TURN_INSTRUCTIONS=["",
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I18n.t('javascripts.directions.instructions.continue_on'), // 1
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I18n.t('javascripts.directions.instructions.slight_right'), // 2
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I18n.t('javascripts.directions.instructions.turn_right'), // 3
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I18n.t('javascripts.directions.instructions.sharp_right'), // 4
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I18n.t('javascripts.directions.instructions.uturn'), // 5
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I18n.t('javascripts.directions.instructions.sharp_left'), // 6
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I18n.t('javascripts.directions.instructions.turn_left'), // 7
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I18n.t('javascripts.directions.instructions.slight_left'), // 8
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I18n.t('javascripts.directions.instructions.via_point'), // 9
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I18n.t('javascripts.directions.instructions.follow'), // 10
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I18n.t('javascripts.directions.instructions.roundabout'), // 11
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I18n.t('javascripts.directions.instructions.leave_roundabout'), // 12
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I18n.t('javascripts.directions.instructions.stay_roundabout'), // 13
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I18n.t('javascripts.directions.instructions.start'), // 14
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I18n.t('javascripts.directions.instructions.destination'), // 15
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I18n.t('javascripts.directions.instructions.against_oneway'), // 16
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I18n.t('javascripts.directions.instructions.end_oneway')] // 17
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r.map=map; // Leaflet map
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r.name=name; // global variable name of this instance (needed for JSONP)
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r.jqSearch=jqSearch; // JQuery object for search panel
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r.route_from=null; // null=unset, false=awaiting response, [lat,lon]=geocoded
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r.route_to=null; // |
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r.awaitingGeocode=false;// true if the user has requested a route, but we're waiting on a geocode result
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r.awaitingRoute=false; // true if we've asked the engine for a route and are waiting to hear back
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r.dragging=false; // true if the user is dragging a start/end point
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r.viaPoints=[]; // not yet used
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r.polyline=null; // Leaflet polyline object
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r.popup=null; // Leaflet popup object
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r.marker_from=null; // Leaflet from marker
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r.marker_to=null; // Leaflet to marker
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r.chosenEngine=null; // currently selected routing engine
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var icon_from = L.icon({
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iconUrl: <%= asset_path('marker-green.png').to_json %>,
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iconSize: [25, 41],
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iconAnchor: [12, 41],
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popupAnchor: [1, -34],
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shadowUrl: <%= asset_path('images/marker-shadow.png').to_json %>,
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shadowSize: [41, 41]
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});
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var icon_to = L.icon({
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iconUrl: <%= asset_path('marker-red.png').to_json %>,
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iconSize: [25, 41],
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iconAnchor: [12, 41],
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popupAnchor: [1, -34],
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shadowUrl: <%= asset_path('images/marker-shadow.png').to_json %>,
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shadowSize: [41, 41]
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});
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// Geocoding
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r.geocode=function(id,event) { var _this=this;
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var field=event.target;
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var v=event.target.value;
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var querystring = '<%= NOMINATIM_URL %>search?q=' + encodeURIComponent(v) + '&format=json';
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// *** &accept-language=<%#= request.user_preferred_languages.join(',') %>
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r[field.id]=false;
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$.getJSON(querystring, function(json) { _this._gotGeocode(json,field); });
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};
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r._gotGeocode=function(json,field) {
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if (json.length==0) {
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alert(I18n.t('javascripts.directions.errors.no_place'));
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r[field.id]=null;
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return;
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}
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field.value=json[0].display_name;
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var lat=Number(json[0].lat), lon=Number(json[0].lon);
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r[field.id]=[lat,lon];
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r.updateMarker(field.id);
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if (r.awaitingGeocode) {
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r.awaitingGeocode=false;
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r.requestRoute(true, true);
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}
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};
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// Drag and drop markers
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r.handleDrop=function(e) {
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var oe=e.originalEvent;
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var id=oe.dataTransfer.getData('id');
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var pt=L.DomEvent.getMousePosition(oe,map.getContainer()); // co-ordinates of the mouse pointer at present
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pt.x+=Number(oe.dataTransfer.getData('offsetX'));
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pt.y+=Number(oe.dataTransfer.getData('offsetY'));
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var ll=map.containerPointToLatLng(pt);
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r.createMarker(ll,id);
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r.setNumericInput(ll,id);
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r.requestRoute(true, false);
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// update to/from field
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};
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r.createMarker=function(latlng,id) {
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if (r[id]) r.map.removeLayer(r[id]);
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r[id]=L.marker(latlng, {
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icon: id=='marker_from' ? icon_from : icon_to,
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draggable: true,
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name: id
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}).addTo(r.map);
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r[id].on('drag',r.markerDragged);
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r[id].on('dragend',r.markerDragged);
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};
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// Update marker from geocoded route input
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r.updateMarker=function(id) {
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var m=id.replace('route','marker');
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if (!r[m]) { r.createMarker(r[id],m); return; }
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var ll=r[m].getLatLng();
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if (ll.lat!=r[id][0] || ll.lng!=r[id][1]) {
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r.createMarker(r[id],m);
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}
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};
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// Marker has been dragged
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r.markerDragged=function(e) {
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r.dragging=(e.type=='drag'); // true for drag, false for dragend
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if (r.dragging && !r.chosenEngine.draggable) return;
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if (r.dragging && r.awaitingRoute) return;
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r.setNumericInput(e.target.getLatLng(), e.target.options.name);
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r.requestRoute(!r.dragging, false);
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};
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// Set a route input field to a numeric value
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r.setNumericInput=function(ll,id) {
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var routeid=id.replace('marker','route');
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r[routeid]=[ll.lat,ll.lng];
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$("[name="+routeid+"]:visible").val(Math.round(ll.lat*10000)/10000+" "+Math.round(ll.lng*10000)/10000);
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}
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// Route-fetching UI
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r.requestRoute=function(isFinal, updateZoom) {
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if (r.route_from && r.route_to) {
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$(".query_wrapper.routing .spinner").show();
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r.awaitingRoute=true;
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r.chosenEngine.getRoute(isFinal,[r.route_from,r.route_to]);
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if(updateZoom){
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r.map.fitBounds(L.latLngBounds([r.route_from, r.route_to]).pad(0.05));
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}
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// then, when the route has been fetched, it'll call the engine's gotRoute function
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} else if (r.route_from==false || r.route_to==false) {
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// we're waiting for a Nominatim response before we can request a route
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r.awaitingGeocode=true;
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}
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};
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// Take an array of Leaflet LatLngs and draw it as a polyline
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r.setPolyline=function(line) {
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if (r.polyline) map.removeLayer(r.polyline);
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r.polyline=L.polyline(line, ROUTING_POLYLINE).addTo(r.map);
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};
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// Take directions and write them out
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// data = { steps: array of [latlng, sprite number, instruction text, distance in metres, highlightPolyline] }
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// sprite numbers equate to OSRM's route_instructions turn values
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r.setItinerary=function(data) {
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// Create base table
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$("#content").removeClass("overlay-sidebar");
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$('#sidebar_content').empty();
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var html=('<h2><a class="geolink" href="#" onclick="$(~.close_directions~).click();return false;">' +
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'<span class="icon close"></span></a>' + I18n.t('javascripts.directions.directions') +
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'</h2><p id="routing_summary">' +
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I18n.t('javascripts.directions.distance') + ': ' + r.formatDistance(data.distance)+ '. ' +
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I18n.t('javascripts.directions.time' ) + ': ' + r.formatTime(data.time) + '.</p>' +
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'<table id="turnbyturn" />').replace(/~/g,"'");
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$('#sidebar_content').html(html);
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// Add each row
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var cumulative=0;
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for (var i=0; i<data.steps.length; i++) {
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var step=data.steps[i];
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// Distance
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var dist=step[3];
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if (dist<5) { dist=""; }
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else if (dist<200) { dist=Math.round(dist/10)*10+"m"; }
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else if (dist<1500) { dist=Math.round(dist/100)*100+"m"; }
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else if (dist<5000) { dist=Math.round(dist/100)/10+"km"; }
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else { dist=Math.round(dist/1000)+"km"; }
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// Add to table
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var row=$("<tr class='turn'/>");
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row.append("<td class='direction i"+step[1]+"'> ");
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row.append("<td class='instruction'>"+step[2]);
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row.append("<td class='distance'>"+dist);
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with ({ instruction: step[2], ll: step[0], lineseg: step[4] }) {
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row.on('click',function(e) { r.clickTurn(instruction, ll); });
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row.hover(function(e){r.highlightSegment(lineseg);}, function(e){r.unhighlightSegment();});
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};
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$('#turnbyturn').append(row);
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cumulative+=step[3];
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}
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$('#sidebar_content').append('<p id="routing_credit">' + r.chosenEngine.creditline + '</p>');
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};
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r.clickTurn=function(instruction,latlng) {
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r.popup=L.popup().setLatLng(latlng).setContent("<p>"+instruction+"</p>").openOn(r.map);
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};
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r.highlightSegment=function(lineseg){
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if (r.highlighted) map.removeLayer(r.highlighted);
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r.highlighted=L.polyline(lineseg, ROUTING_POLYLINE_HIGHLIGHT).addTo(r.map);
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}
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r.unhighlightSegment=function(){
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if (r.highlighted) map.removeLayer(r.highlighted);
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}
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r.formatDistance=function(m) {
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if (m < 1000 ) { return Math.round(m) + "m"; }
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else if (m < 10000) { return (m/1000.0).toFixed(1) + "km"; }
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else { return Math.round(m / 1000) + "km"; }
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};
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r.formatTime=function(s) {
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var m=Math.round(s/60);
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var h=Math.floor(m/60);
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m -= h*60;
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return h+":"+(m<10 ? '0' : '')+m;
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};
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// Close all routing UI
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r.close=function() {
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$("#content").addClass("overlay-sidebar");
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r.route_from=r.route_to=null;
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$(".query_wrapper.routing input").val("");
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var remove=['polyline','popup','marker_from','marker_to'];
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for (var i=0; i<remove.length; i++) {
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if (r[remove[i]]) { map.removeLayer(r[remove[i]]); r[remove[i]]=null; }
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}
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};
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// Routing engine handling
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// Add all engines
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var list=OSM.RoutingEngines.list;
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list.sort(function(a,b) { return I18n.t(a.name)>I18n.t(b.name); });
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var select=r.jqSearch.find('select.routing_engines');
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for (var i=0; i<list.length; i++) {
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// Set up JSONP callback
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with ({num: i}) {
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list[num].requestJSONP=function(url) {
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var script = document.createElement('script');
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script.src = url+r.name+".gotRoute"+num;
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document.body.appendChild(script);
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};
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list[num].requestCORS=function(url) {
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$.ajax({ url: url, method: "GET", data: {}, dataType: 'json', success: r['gotRoute'+num] });
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};
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r['gotRoute'+num]=function(data) {
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r.awaitingRoute=false;
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$(".query_wrapper.routing .spinner").hide();
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if (!list[num].gotRoute(r,data)) {
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// No route found
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if (r.polyline) {
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map.removeLayer(r.polyline);
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r.polyline=null;
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}
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if (!r.dragging) { alert(I18n.t('javascripts.directions.errors.no_route')); }
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}
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};
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}
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select.append("<option value='"+i+"'>"+I18n.t(list[i].name)+"</option>");
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}
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r.engines=list;
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r.chosenEngine=list[0]; // default to first engine
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// Choose an engine on dropdown change
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r.selectEngine=function(e) {
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r.chosenEngine=r.engines[e.target.selectedIndex];
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if (r.polyline){ // and if a route is currently showing, must also refresh, else confusion
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r.requestRoute(true, false);
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}
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};
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// Choose an engine by name
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r.chooseEngine=function(name) {
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for (var i=0; i<r.engines.length; i++) {
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if (r.engines[i].name==name) {
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r.chosenEngine=r.engines[i];
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r.jqSearch.find('select.routing_engines').val(i);
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}
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}
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};
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return r;
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};
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