Eliminate templating from most javascript
This commit is contained in:
Tom Hughes
parent
2cb166cf33
commit
e256c837b5
7 changed files with 31 additions and 20 deletions
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@ -1,384 +0,0 @@
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//= require_self
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//= require_tree ./directions
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OSM.Directions = function (map) {
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var awaitingGeocode; // true if the user has requested a route, but we're waiting on a geocode result
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var awaitingRoute; // true if we've asked the engine for a route and are waiting to hear back
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var dragging; // true if the user is dragging a start/end point
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var chosenEngine;
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var popup = L.popup();
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var polyline = L.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 highlight = L.polyline([], {
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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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var endpoints = [
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Endpoint($("input[name='route_from']"), <%= asset_path('marker-green.png').to_json %>),
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Endpoint($("input[name='route_to']"), <%= asset_path('marker-red.png').to_json %>)
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];
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function Endpoint(input, iconUrl) {
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var endpoint = {};
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endpoint.marker = L.marker([0, 0], {
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icon: L.icon({
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iconUrl: iconUrl,
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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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draggable: true
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});
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endpoint.marker.on('drag dragend', function (e) {
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dragging = (e.type == 'drag');
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if (dragging && !chosenEngine.draggable) return;
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if (dragging && awaitingRoute) return;
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endpoint.setLatLng(e.target.getLatLng());
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if (map.hasLayer(polyline)) {
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getRoute();
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}
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});
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input.on("change", function (e) {
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// make text the same in both text boxes
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var value = e.target.value;
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endpoint.setValue(value)
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});
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endpoint.setValue = function(value) {
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endpoint.value = value;
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delete endpoint.latlng;
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input.val(value);
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endpoint.getGeocode();
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}
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endpoint.getGeocode = function() {
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// if no one has entered a value yet, then we can't geocode, so don't
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// even try.
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if (!endpoint.value) {
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return;
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}
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endpoint.awaitingGeocode = true;
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$.getJSON(document.location.protocol + '<%= NOMINATIM_URL %>search?q=' + encodeURIComponent(endpoint.value) + '&format=json', function (json) {
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endpoint.awaitingGeocode = false;
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endpoint.hasGeocode = true;
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if (json.length == 0) {
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alert(I18n.t('javascripts.directions.errors.no_place'));
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return;
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}
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input.val(json[0].display_name);
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endpoint.latlng = L.latLng(json[0]);
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endpoint.marker
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.setLatLng(endpoint.latlng)
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.addTo(map);
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if (awaitingGeocode) {
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awaitingGeocode = false;
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getRoute();
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}
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});
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}
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endpoint.setLatLng = function (ll) {
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var precision = OSM.zoomPrecision(map.getZoom());
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input.val(ll.lat.toFixed(precision) + ", " + ll.lng.toFixed(precision));
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endpoint.hasGeocode = true;
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endpoint.latlng = ll;
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endpoint.marker
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.setLatLng(ll)
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.addTo(map);
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};
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return endpoint;
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}
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$(".directions_form a.directions_close").on("click", function(e) {
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e.preventDefault();
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var route_from = endpoints[0].value;
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if (route_from) {
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OSM.router.route("/?query=" + encodeURIComponent(route_from) + OSM.formatHash(map));
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} else {
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OSM.router.route("/" + OSM.formatHash(map));
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}
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});
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function formatDistance(m) {
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if (m < 1000) {
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return Math.round(m) + "m";
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} else if (m < 10000) {
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return (m / 1000.0).toFixed(1) + "km";
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} else {
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return Math.round(m / 1000) + "km";
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}
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}
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function formatTime(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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function setEngine(id) {
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engines.forEach(function(engine, i) {
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if (engine.id == id) {
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chosenEngine = engine;
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select.val(i);
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}
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});
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}
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function getRoute() {
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// go fetch geocodes for any endpoints which have not already
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// been geocoded.
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for (var ep_i = 0; ep_i < 2; ++ep_i) {
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var endpoint = endpoints[ep_i];
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if (!endpoint.hasGeocode && !endpoint.awaitingGeocode) {
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endpoint.getGeocode();
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awaitingGeocode = true;
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}
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}
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if (endpoints[0].awaitingGeocode || endpoints[1].awaitingGeocode) {
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awaitingGeocode = true;
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return;
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}
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var o = endpoints[0].latlng,
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d = endpoints[1].latlng;
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if (!o || !d) return;
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$("header").addClass("closed");
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var precision = OSM.zoomPrecision(map.getZoom());
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OSM.router.replace("/directions?" + querystring.stringify({
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engine: chosenEngine.id,
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route: o.lat.toFixed(precision) + ',' + o.lng.toFixed(precision) + ';' +
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d.lat.toFixed(precision) + ',' + d.lng.toFixed(precision)
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}));
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// copy loading item to sidebar and display it. we copy it, rather than
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// just using it in-place and replacing it in case it has to be used
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// again.
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$('#sidebar_content').html($('.directions_form .loader_copy').html());
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awaitingRoute = true;
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map.setSidebarOverlaid(false);
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chosenEngine.getRoute([o, d], function (err, route) {
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awaitingRoute = false;
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if (err) {
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map.removeLayer(polyline);
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if (!dragging) {
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alert(I18n.t('javascripts.directions.errors.no_route'));
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}
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return;
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}
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polyline
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.setLatLngs(route.line)
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.addTo(map);
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if (!dragging) {
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map.fitBounds(polyline.getBounds().pad(0.05));
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}
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var html = '<h2><a class="geolink" href="#">' +
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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') + ': ' + formatDistance(route.distance) + '. ' +
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I18n.t('javascripts.directions.time') + ': ' + formatTime(route.time) + '.</p>' +
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'<table id="turnbyturn" />';
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$('#sidebar_content')
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.html(html);
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// Add each row
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var cumulative = 0;
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route.steps.forEach(function (step) {
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var ll = step[0],
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direction = step[1],
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instruction = step[2],
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dist = step[3],
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lineseg = step[4];
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cumulative += dist;
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if (dist < 5) {
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dist = "";
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} else if (dist < 200) {
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dist = Math.round(dist / 10) * 10 + "m";
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} else if (dist < 1500) {
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dist = Math.round(dist / 100) * 100 + "m";
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} else if (dist < 5000) {
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dist = Math.round(dist / 100) / 10 + "km";
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} else {
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dist = Math.round(dist / 1000) + "km";
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}
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var row = $("<tr class='turn'/>");
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row.append("<td><div class='direction i" + direction + "'/></td> ");
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row.append("<td class='instruction'>" + instruction);
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row.append("<td class='distance'>" + dist);
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row.on('click', function () {
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popup
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.setLatLng(ll)
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.setContent("<p>" + instruction + "</p>")
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.openOn(map);
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});
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row.hover(function () {
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highlight
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.setLatLngs(lineseg)
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.addTo(map);
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}, function () {
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map.removeLayer(highlight);
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});
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$('#turnbyturn').append(row);
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});
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$('#sidebar_content').append('<p id="routing_credit">' +
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I18n.t('javascripts.directions.instructions.courtesy', {link: chosenEngine.creditline}) +
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'</p>');
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$('#sidebar_content a.geolink').on('click', function(e) {
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e.preventDefault();
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map.removeLayer(polyline);
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$('#sidebar_content').html('');
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map.setSidebarOverlaid(true);
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// TODO: collapse width of sidebar back to previous
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});
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});
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}
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var engines = OSM.Directions.engines;
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engines.sort(function (a, b) {
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a = I18n.t('javascripts.directions.engines.' + a.id);
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b = I18n.t('javascripts.directions.engines.' + b.id);
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return a.localeCompare(b);
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});
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var select = $('select.routing_engines');
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engines.forEach(function(engine, i) {
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select.append("<option value='" + i + "'>" + I18n.t('javascripts.directions.engines.' + engine.id) + "</option>");
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});
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setEngine('osrm_car');
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select.on("change", function (e) {
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chosenEngine = engines[e.target.selectedIndex];
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if (map.hasLayer(polyline)) {
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getRoute();
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}
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});
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$(".directions_form").on("submit", function(e) {
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e.preventDefault();
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getRoute();
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});
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$(".routing_marker").on('dragstart', function (e) {
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e.originalEvent.dataTransfer.effectAllowed = 'move';
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e.originalEvent.dataTransfer.setData('id', this.id);
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var xo = e.originalEvent.clientX - $(e.target).offset().left;
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var yo = e.originalEvent.clientY - $(e.target).offset().top;
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e.originalEvent.dataTransfer.setData('offsetX', e.originalEvent.target.width / 2 - xo);
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e.originalEvent.dataTransfer.setData('offsetY', e.originalEvent.target.height - yo);
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});
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var page = {};
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page.pushstate = page.popstate = function() {
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$(".search_form").hide();
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$(".directions_form").show();
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$("#map").on('dragend dragover', function (e) {
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e.preventDefault();
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});
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$("#map").on('drop', function (e) {
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e.preventDefault();
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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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endpoints[id === 'marker_from' ? 0 : 1].setLatLng(ll);
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getRoute();
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});
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var params = querystring.parse(location.search.substring(1)),
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route = (params.route || '').split(';');
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if (params.engine) {
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setEngine(params.engine);
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}
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if (params.from) {
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endpoints[0].setValue(params.from);
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endpoints[1].setValue("");
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} else {
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endpoints[0].setValue("");
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endpoints[1].setValue("");
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}
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var o = route[0] && L.latLng(route[0].split(',')),
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d = route[1] && L.latLng(route[1].split(','));
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if (o) endpoints[0].setLatLng(o);
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if (d) endpoints[1].setLatLng(d);
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map.setSidebarOverlaid(!o || !d);
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getRoute();
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};
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page.load = function() {
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page.pushstate();
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};
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page.unload = function() {
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$(".search_form").show();
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$(".directions_form").hide();
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$("#map").off('dragend dragover drop');
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map
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.removeLayer(popup)
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.removeLayer(polyline)
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.removeLayer(endpoints[0].marker)
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.removeLayer(endpoints[1].marker);
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};
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return page;
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};
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OSM.Directions.engines = [];
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OSM.Directions.addEngine = function (engine, supportsHTTPS) {
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if (document.location.protocol == "http:" || supportsHTTPS) {
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OSM.Directions.engines.push(engine);
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}
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};
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