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index2.html
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index2.html
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<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8 />
<title>London BUS-checker</title>
<meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no' />
<script src='http://ajax.aspnetcdn.com/ajax/jQuery/jquery-2.1.1.min.js'></script>
<script src='https://api.tiles.mapbox.com/mapbox.js/v2.0.1/mapbox.js'></script>
<link href='https://api.tiles.mapbox.com/mapbox.js/v2.0.1/mapbox.css' rel='stylesheet' />
<style>
body { margin:0; padding:0; font-family: Arial; }
#map { position:absolute; top:0; bottom:0; width:100%; }
.overlay { position: fixed; top: 0; right: 0; width: 100%; height: 100%; background: rgba(0,0,0,.5);}
.overlay > div { position: fixed; top: 0; right: 0; width: 20%; height: 100%; background: rgba(0,0,0,.95); text-align: left; padding: 0 2%; color: #fff; overflow-y: auto;}
.ajaxloader { position: absolute; top: 50%; left: 50%; margin: -16px 0 0 -16px; width: 32px; height: 32px; }
h4 {margin-bottom: 5px;}
p {margin: 0 0 8px; font-size: 14px; border-bottom: 1px solid gray; padding-bottom: 15px;}
</style>
</head>
<body>
<div id='map'></div>
<script>
var londonBusStops = (function () {
// Docs:
// https://www.tfl.gov.uk/cdn/static/cms/documents/tfl-live-bus-and-river-bus-arrivals-api-documentation.pdf
// https://developer.mozilla.org/en-US/docs/Web/Guide/API/DOM/Storage
// Downloads list of bus stops
var downloadStops = function () {
// Return with AJAX promise
return $.ajax({
dataType: "text",
url: "http://countdown.api.tfl.gov.uk/interfaces/ura/instant_V1?ReturnList=StopPointName,StopID,Latitude,Longitude"
});
};
// Creates a geo JSON array from stop list
var parseStopsToGeoJson = function (stopsResult) {
// Split lines
var lines = stopsResult.split('\n');
// Remove first line
lines.splice(0, 1);
// Parse each line
var result = lines.map(function (l) {
// Get JSON array
var a = JSON.parse(l);
// Get data
var stopPointName = a[1];
var stopID = a[2];
var latitude = a[3];
var longitude = a[4];
// Return geo JSON item
var item = {
type: "Feature",
geometry: {
coordinates: [ longitude, latitude ],
type: "Point"
},
properties: {
title: stopPointName,
description: "Click here for more info",
stopID: stopID,
"marker-color": "#e10c06",
"marker-size": "small",
"marker-symbol": "bus"
}
};
return item;
});
return result;
};
// Gets bus stops as geo JSON
var getStopsAsGeoJson = function () {
// Create new promise (we'll return this)
var deferred = new $.Deferred();
var data = localStorage.getItem("LondonBusStops");
if (data) {
// We have it in local storage!
var geoJson = parseStopsToGeoJson(data);
deferred.resolve(geoJson);
}
else {
// Download stops
downloadStops()
.done(function (data) {
localStorage.setItem("LondonBusStops", data);
// Convert result to geo JSON
var geoJson = parseStopsToGeoJson(data);
// Resolve promise
deferred.resolve(geoJson);
})
.fail(function () {
// Reject promise
deferred.reject();
});
}
// Return promise
return deferred;
};
// Downloads stuff for a given bus stop
var downloadInfoForStop = function (stopID) {
// Create URL
var url = "http://countdown.api.tfl.gov.uk/interfaces/ura/instant_V1";
url += "?ReturnList=LineName,Towards,DestinationName,EstimatedTime";
url += "&StopID=" + String(stopID);
// Return AJAX promise
return $.ajax({
dataType: "text",
url: url
});
};
// Parses information downloaded for a stop
var parseInfoForStop = function (resultString) {
// Split lines
var lines = resultString.split('\n');
// Remove first line
lines.splice(0, 1);
// Parse each line
var result = lines.map(function (l) {
// Get JSON array
var a = JSON.parse(l);
// Get data
return {
LineName: a[2],
Towards: a[1],
DestinationName: a[3],
EstimatedTime: new Date(a[4])
};
});
return result;
};
// Gets stop info
var getStopInfo = function (stopID) {
// Create promise
var deferred = new $.Deferred();
// Download info
downloadInfoForStop(stopID)
.done(function (data) {
// Parse data
var info = parseInfoForStop(data);
// Resolve promise
deferred.resolve(info);
})
.fail(function () {
// Reject the promise
deferred.reject();
});
// Return promise
return deferred;
};
return {
getStopsAsGeoJson: getStopsAsGeoJson,
getStopInfo: getStopInfo
};
})();
$(function () {
var $document = $(document);
var $body = $("body");
// Ajax loader
var $ajaxLoader = $("<div class='overlay'><div class='ajaxloader'><img src='ajax-loader.gif' /></div>");
$document
.ajaxSend(function () {
$ajaxLoader.appendTo($body);
})
.ajaxComplete(function () {
$ajaxLoader.detach();
});
// Set up mapbox token
L.mapbox.accessToken = 'pk.eyJ1IjoibGV2aXBhZHJlIiwiYSI6IkJwMTE5SDAifQ.7HDSEJrVzl30aKBDVuXkww';
// Create map
var map = L.mapbox.map('map', 'levipadre.j8fgmbd1');
// This function will be called when the user clicks on a marker
var itemClickFunc = function(e) {
// Find data of clicked item
var stopID = e.layer.feature.properties.stopID;
var title = e.layer.feature.properties.title;
// Local time
var d = new Date();
// Fetch data for this bus stop
londonBusStops.getStopInfo(stopID)
.done(function (info) {
// Create container item
var $div = $(document.createElement("div"))
.html("<h2>" + title + "</h2>");
if (info.length > 0) {
// Go through all info
for (var i = 0; i < info.length; i++) {
// Local time
var est = new Date(info[i].EstimatedTime);
var timeDiff = Math.abs(est - d);
var time = new Date(timeDiff);
var convTime = time.toLocaleTimeString();
var newTime = convTime.substring(0, convTime.length-3);
// Create HTML
var htmlContent = "<h4>" + info[i].LineName + "<br/>Towards: " + info[i].Towards + "</h4>";
htmlContent += "<p><strong>Destination: </strong> " + info[i].DestinationName + "<br />";
htmlContent += "<strong>Estimated time: </strong> " + newTime + " (" + info[i].EstimatedTime.toLocaleTimeString() + ")</p>";
// Create list item
$(document.createElement("div"))
.html(htmlContent)
.appendTo($div);
}
}
else {
$div.append("<p>There are no buses.</p>");
}
map.panTo(e.layer.getLatLng());
e.layer.openPopup();
// Create overlay
var $overlay = $(document.createElement("div"))
.addClass("overlay")
.append($div)
.appendTo($body)
.on("click", function () {
$overlay.remove();
});
})
.fail (function () {
alert("Something bad happened, could not download info for selected bus stop.");
});
};
// Fetch bus stops data
londonBusStops.getStopsAsGeoJson()
.done(function (geoJson) {
var i = 0;
var addMoreMarkers = function () {
var portion = geoJson.slice(i, i += 10);
var featureLayer = L.mapbox.featureLayer(portion).addTo(map);
featureLayer.on('mouseover', function(e) {
e.layer.openPopup();
});
featureLayer.on('mouseout', function(e) {
e.layer.closePopup();
});
featureLayer.on('click', itemClickFunc);
if (i < geoJson.length) {
setTimeout(function () { addMoreMarkers(); }, 100);
}
};
addMoreMarkers();
})
.fail(function () {
alert("Something bad happened, could not download bus stops.");
});
});
</script>
</body>
</html>