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directions.js
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directions.js
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//= require_self
//= require_tree ./directions
OSM.Directions = function (map) {
var awaitingGeocode; // true if the user has requested a route, but we're waiting on a geocode result
var awaitingRoute; // true if we've asked the engine for a route and are waiting to hear back
var chosenEngine;
var popup = L.popup({autoPanPadding: [100, 100]});
var polyline = L.polyline([], {
color: '#03f',
opacity: 0.3,
weight: 10
});
var highlight = L.polyline([], {
color: '#ff0',
opacity: 0.5,
weight: 12
});
var endpoints = [
Endpoint($("input[name='route_from']"), OSM.MARKER_GREEN),
Endpoint($("input[name='route_to']"), OSM.MARKER_RED)
];
var expiry = new Date();
expiry.setYear(expiry.getFullYear() + 10);
function Endpoint(input, iconUrl) {
var endpoint = {};
endpoint.marker = L.marker([0, 0], {
icon: L.icon({
iconUrl: iconUrl,
iconSize: [25, 41],
iconAnchor: [12, 41],
popupAnchor: [1, -34],
shadowUrl: OSM.MARKER_SHADOW,
shadowSize: [41, 41]
}),
draggable: true,
autoPan: true
});
endpoint.marker.on('drag dragend', function (e) {
var dragging = (e.type === 'drag');
if (dragging && !chosenEngine.draggable) return;
if (dragging && awaitingRoute) return;
endpoint.setLatLng(e.target.getLatLng());
if (map.hasLayer(polyline)) {
getRoute(false, !dragging);
}
});
input.on("keydown", function() {
input.removeClass("error");
});
input.on("change", function (e) {
awaitingGeocode = true;
// make text the same in both text boxes
var value = e.target.value;
endpoint.setValue(value);
});
endpoint.setValue = function(value, latlng) {
endpoint.value = value;
delete endpoint.latlng;
input.removeClass("error");
input.val(value);
if (latlng) {
endpoint.setLatLng(latlng);
} else {
endpoint.getGeocode();
}
};
endpoint.getGeocode = function() {
// if no one has entered a value yet, then we can't geocode, so don't
// even try.
if (!endpoint.value) {
return;
}
endpoint.awaitingGeocode = true;
$.getJSON(OSM.NOMINATIM_URL + 'search?q=' + encodeURIComponent(endpoint.value) + '&format=json', function (json) {
endpoint.awaitingGeocode = false;
endpoint.hasGeocode = true;
if (json.length === 0) {
input.addClass("error");
alert(I18n.t('javascripts.directions.errors.no_place', {place: endpoint.value}));
return;
}
endpoint.setLatLng(L.latLng(json[0]));
input.val(json[0].display_name);
if (awaitingGeocode) {
awaitingGeocode = false;
getRoute(true, true);
}
});
};
endpoint.setLatLng = function (ll) {
var precision = OSM.zoomPrecision(map.getZoom());
input.val(ll.lat.toFixed(precision) + ", " + ll.lng.toFixed(precision));
endpoint.hasGeocode = true;
endpoint.latlng = ll;
endpoint.marker
.setLatLng(ll)
.addTo(map);
};
return endpoint;
}
$(".directions_form .reverse_directions").on("click", function() {
var from = endpoints[0].latlng,
to = endpoints[1].latlng;
OSM.router.route("/directions?" + querystring.stringify({
from: $("#route_to").val(),
to: $("#route_from").val(),
route: to.lat + "," + to.lng + ";" + from.lat + "," + from.lng
}));
});
$(".directions_form .close").on("click", function(e) {
e.preventDefault();
var route_from = endpoints[0].value;
if (route_from) {
OSM.router.route("/?query=" + encodeURIComponent(route_from) + OSM.formatHash(map));
} else {
OSM.router.route("/" + OSM.formatHash(map));
}
});
function formatDistance(m) {
if (m < 1000) {
return Math.round(m) + "m";
} else if (m < 10000) {
return (m / 1000.0).toFixed(1) + "km";
} else {
return Math.round(m / 1000) + "km";
}
}
function formatTime(s) {
var m = Math.round(s / 60);
var h = Math.floor(m / 60);
m -= h * 60;
return h + ":" + (m < 10 ? '0' : '') + m;
}
function setEngine(id) {
engines.forEach(function(engine, i) {
if (engine.id === id) {
chosenEngine = engine;
select.val(i);
}
});
}
function getRoute(fitRoute, reportErrors) {
// Cancel any route that is already in progress
if (awaitingRoute) awaitingRoute.abort();
// go fetch geocodes for any endpoints which have not already
// been geocoded.
for (var ep_i = 0; ep_i < 2; ++ep_i) {
var endpoint = endpoints[ep_i];
if (!endpoint.hasGeocode && !endpoint.awaitingGeocode) {
endpoint.getGeocode();
awaitingGeocode = true;
}
}
if (endpoints[0].awaitingGeocode || endpoints[1].awaitingGeocode) {
awaitingGeocode = true;
return;
}
var o = endpoints[0].latlng,
d = endpoints[1].latlng;
if (!o || !d) return;
$("header").addClass("closed");
var precision = OSM.zoomPrecision(map.getZoom());
OSM.router.replace("/directions?" + querystring.stringify({
engine: chosenEngine.id,
route: o.lat.toFixed(precision) + ',' + o.lng.toFixed(precision) + ';' +
d.lat.toFixed(precision) + ',' + d.lng.toFixed(precision)
}));
// copy loading item to sidebar and display it. we copy it, rather than
// just using it in-place and replacing it in case it has to be used
// again.
$('#sidebar_content').html($('.directions_form .loader_copy').html());
map.setSidebarOverlaid(false);
awaitingRoute = chosenEngine.getRoute([o, d], function (err, route) {
awaitingRoute = null;
if (err) {
map.removeLayer(polyline);
if (reportErrors) {
$('#sidebar_content').html('<p class="search_results_error">' + I18n.t('javascripts.directions.errors.no_route') + '</p>');
}
return;
}
polyline
.setLatLngs(route.line)
.addTo(map);
if (fitRoute) {
map.fitBounds(polyline.getBounds().pad(0.05));
}
var html = '<h2><a class="geolink" href="#">' +
'<span class="icon close"></span></a>' + I18n.t('javascripts.directions.directions') +
'</h2><p id="routing_summary">' +
I18n.t('javascripts.directions.distance') + ': ' + formatDistance(route.distance) + '. ' +
I18n.t('javascripts.directions.time') + ': ' + formatTime(route.time) + '.';
if (typeof route.ascend !== 'undefined' && typeof route.descend !== 'undefined') {
html += '<br />' +
I18n.t('javascripts.directions.ascend') + ': ' + Math.round(route.ascend) + 'm. ' +
I18n.t('javascripts.directions.descend') + ': ' + Math.round(route.descend) +'m.';
}
html += '</p><table id="turnbyturn" />';
$('#sidebar_content')
.html(html);
// Add each row
var cumulative = 0;
route.steps.forEach(function (step) {
var ll = step[0],
direction = step[1],
instruction = step[2],
dist = step[3],
lineseg = step[4];
cumulative += dist;
if (dist < 5) {
dist = "";
} else if (dist < 200) {
dist = Math.round(dist / 10) * 10 + "m";
} else if (dist < 1500) {
dist = Math.round(dist / 100) * 100 + "m";
} else if (dist < 5000) {
dist = Math.round(dist / 100) / 10 + "km";
} else {
dist = Math.round(dist / 1000) + "km";
}
var row = $("<tr class='turn'/>");
row.append("<td><div class='direction i" + direction + "'/></td> ");
row.append("<td class='instruction'>" + instruction);
row.append("<td class='distance'>" + dist);
row.on('click', function () {
popup
.setLatLng(ll)
.setContent("<p>" + instruction + "</p>")
.openOn(map);
});
row.hover(function () {
highlight
.setLatLngs(lineseg)
.addTo(map);
}, function () {
map.removeLayer(highlight);
});
$('#turnbyturn').append(row);
});
$('#sidebar_content').append('<p id="routing_credit">' +
I18n.t('javascripts.directions.instructions.courtesy', {link: chosenEngine.creditline}) +
'</p>');
$('#sidebar_content a.geolink').on('click', function(e) {
e.preventDefault();
map.removeLayer(polyline);
$('#sidebar_content').html('');
map.setSidebarOverlaid(true);
// TODO: collapse width of sidebar back to previous
});
});
}
var engines = OSM.Directions.engines;
engines.sort(function (a, b) {
a = I18n.t('javascripts.directions.engines.' + a.id);
b = I18n.t('javascripts.directions.engines.' + b.id);
return a.localeCompare(b);
});
var select = $('select.routing_engines');
engines.forEach(function(engine, i) {
select.append("<option value='" + i + "'>" + I18n.t('javascripts.directions.engines.' + engine.id) + "</option>");
});
var chosenEngineId = $.cookie('_osm_directions_engine');
if(!chosenEngineId) {
chosenEngineId = 'osrm_car';
}
setEngine(chosenEngineId);
select.on("change", function (e) {
chosenEngine = engines[e.target.selectedIndex];
$.cookie('_osm_directions_engine', chosenEngine.id, { expires: expiry, path: '/' });
if (map.hasLayer(polyline)) {
getRoute(true, true);
}
});
$(".directions_form").on("submit", function(e) {
e.preventDefault();
getRoute(true, true);
});
$(".routing_marker").on('dragstart', function (e) {
var dt = e.originalEvent.dataTransfer;
dt.effectAllowed = 'move';
var dragData = { type: $(this).data('type') };
dt.setData('text', JSON.stringify(dragData));
if (dt.setDragImage) {
var img = $("<img>").attr("src", $(e.originalEvent.target).attr("src"));
dt.setDragImage(img.get(0), 12, 21);
}
});
var page = {};
page.pushstate = page.popstate = function() {
$(".search_form").hide();
$(".directions_form").show();
$("#map").on('dragend dragover', function (e) {
e.preventDefault();
});
$("#map").on('drop', function (e) {
e.preventDefault();
var oe = e.originalEvent;
var dragData = JSON.parse(oe.dataTransfer.getData('text'));
var type = dragData.type;
var pt = L.DomEvent.getMousePosition(oe, map.getContainer()); // co-ordinates of the mouse pointer at present
pt.y += 20;
var ll = map.containerPointToLatLng(pt);
endpoints[type === 'from' ? 0 : 1].setLatLng(ll);
getRoute(true, true);
});
var params = querystring.parse(location.search.substring(1)),
route = (params.route || '').split(';'),
from = route[0] && L.latLng(route[0].split(',')),
to = route[1] && L.latLng(route[1].split(','));
if (params.engine) {
setEngine(params.engine);
}
endpoints[0].setValue(params.from || "", from);
endpoints[1].setValue(params.to || "", to);
map.setSidebarOverlaid(!from || !to);
getRoute(true, true);
};
page.load = function() {
page.pushstate();
};
page.unload = function() {
$(".search_form").show();
$(".directions_form").hide();
$("#map").off('dragend dragover drop');
map
.removeLayer(popup)
.removeLayer(polyline)
.removeLayer(endpoints[0].marker)
.removeLayer(endpoints[1].marker);
};
return page;
};
OSM.Directions.engines = [];
OSM.Directions.addEngine = function (engine, supportsHTTPS) {
if (document.location.protocol === "http:" || supportsHTTPS) {
OSM.Directions.engines.push(engine);
}
};