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index.html
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<!DOCTYPE html>
<html>
<head>
<title>AIFSRC projects</title>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no">
<link rel="stylesheet" href="lib/leaflet/leaflet.css" />
<link rel="stylesheet" href="lib/select2/select2.css" />
<style>
html, body, #map {
height:100%;
width:100%;
padding:0px;
margin:0px;
font-family: "Myriad Pro","Droid Sans",Arial,sans-serif;
}
.popupLabel {
color:grey;
}
.select2-container .select2-choice {
height:32px;
}
#select2-chosen-1 {
line-height:32px;
}
</style>
</head>
<body>
<div id="map"></div>
<div id="countrySelect" style="position:absolute; top:15px; right:15px; width: 200px;">
</div>
<script src="lib/jquery-1.11.1.min.js"></script>
<script src="lib/select2/select2.min.js"></script>
<script src="lib/mustache.js"></script>
<script src="lib/leaflet/leaflet-src.js"></script>
<script id="template" type="x-tmpl-mustache">
<p style="display:inline;font-weight:bold;"> {{ project }} </p><br>
<hr>
<span class="popupLabel">UN ID</span> {{ un_id }} <br>
<span class="popupLabel">Location</span> {{ approximate_location_nearest_town }} <br>
<span class="popupLabel">Country</span> {{ country }} <br>
<span class="popupLabel">Project leader</span> {{ project_leader }} <br>
<span class="popupLabel">Project manager</span> {{ aciar_project_manager }} <br>
<span class="popupLabel">Web page</span> <a href="{{ project_url }}" target="blank"> link </a> <br>
<hr>
<a class="zoomTo" href="#{{ un_id }}">Zoom in</a><a class="zoomTo" style="float:right;" href="#">Zoom out</a>
</script>
<script>
var opacityFilteredProjIn = 0.9;
var opacityFilteredProjOut = 0.3;
var extendLat = 0.25;
var extendLng = 0.25;
var paddingAroundFilteredProj = 0.1;
function formatCountry(state) {
if (!state.id) return state.text; // optgroup
return "<img class='flag' src='images/flags/" + state.text.toLowerCase() + ".png'/><p style='vertical-align:top;display:inline;line-height:32px;margin-left:8px;'>" + state.text + "</p>";
};
// Not setting the viewport yet (fitting it to the data)
var map = L.map('map',{
zoomAnimationThreshold: 6
});
// Setting a nice looking OSM basemap served from MapBox
// Please use your own MapBox token
L.tileLayer('http://api.tiles.mapbox.com/v4/{id}/{z}/{x}/{y}.png?access_token=pk.eyJ1IjoiaHNlbm90IiwiYSI6IklFRlVnT2cifQ.4EMXk4fgTuB-kI1x1x3vGw', {
maxZoom: 18,
attribution: 'Map data © <a href="http://openstreetmap.org">OpenStreetMap</a> contributors, ' +
'<a href="http://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>, ' +
'Imagery © <a href="http://mapbox.com">Mapbox</a>',
id: 'examples.map-i86nkdio'
}).addTo(map);
var template = $('#template').html();
Mustache.parse(template); // optional, speeds up future uses
// Attaching a popup with a rendered Mustache template to a feature
function attachPopup(feature, layer) {
if (feature.properties) {
var rendered = Mustache.render(template, feature.properties);
layer.bindPopup(rendered);
}
};
function zoomToProject(id) {
if (id)
{
var projectFeature, projBBoxArr = [], openPopup = false;
// Find the project in the projectLayer by its UN ID (if starts with numeric)
if (/^\d.*/.test(id))
{
for (l in projectLayer._layers)
{
if (projectLayer._layers[l].feature.properties.un_id == Number(id))
{
// Getting the feature properties in a variable
projectFeature = projectLayer._layers[l];
var pflat = Number(projectFeature.feature.properties.latitude);
var pflng = Number(projectFeature.feature.properties.longitude);
projBBoxArr.push(new L.latLng(pflat, pflng));
openPopup = true;
break;
}
}
}
else
{
// Extracting the numeric part of the project ID
id = id.replace("P","");
// Find the project in the projectLayer by its project ID (otherwise)
for (l in projectLayer._layers)
{
if (projectLayer._layers[l].feature.properties.no == Number(id))
{
// Getting the feature properties in a variable
projectFeature = projectLayer._layers[l];
var pflat = Number(projectFeature.feature.properties.latitude);
var pflng = Number(projectFeature.feature.properties.longitude);
projBBoxArr.push(new L.latLng(pflat, pflng));
}
}
}
if (projBBoxArr.length)
{
// Manual extension of the bounding box array so that it includes a significant portion of the map
if (projBBoxArr.length == 1)
{
projBBoxArr.push(new L.latLng(projBBoxArr[0].lat - extendLat, projBBoxArr[0].lng - extendLng));
projBBoxArr.push(new L.latLng(projBBoxArr[0].lat + extendLat, projBBoxArr[0].lng + extendLng));
}
// Zoom to this/these project(s)
map.fitBounds(new L.latLngBounds(projBBoxArr).pad(paddingAroundFilteredProj));
// Opening up the popup if required
if (openPopup)
{
projectFeature.openPopup();
}
}
else
{
alert("No project with ID "+id+" was found. Please check the URL and/or the backend spreadsheet.");
}
}
else
{
// Setting the viewport to the data bounds
map.fitBounds(projectLayer.getBounds());
}
}
// Get project ID from URL
var projectIdInUrl;
if(window.location.hash) {
// Fragment exists
projectIdInUrl = window.location.hash.substr(1);
}
var geojsonMarkerOptions = {
radius: 12,
color: "#000",
weight: 2,
opacity: opacityFilteredProjIn,
fillOpacity: opacityFilteredProjIn
};
// 12 colors brewed
var colorBrewer = [ '#8dd3c7', '#ffffb3', '#bebada', '#fb8072', '#80b1d3', '#fdb462', '#b3de69', '#fccde5', '#d9d9d9', '#bc80bd', '#ccebc5', '#ffed6f'];
// The vector layer to overlay comes from CartoDB via the "sql" endpoint
var projectLayer = new L.GeoJSON(null,{
onEachFeature: attachPopup,
pointToLayer: function (feature,latlng) {
geojsonMarkerOptions.fillColor = colorBrewer[feature.properties.no];
return L.circleMarker(latlng, geojsonMarkerOptions);
}
});
// Adding the layer to the map
map.addLayer(projectLayer);
$.getJSON(
"http://aifsrc.cartodb.com/api/v2/sql?q=SELECT%20*%20FROM%20aifsrc_projects%20WHERE%20the_geom%20IS%20NOT%20NULL&format=geojson&callback=?",
function(geojson) {
var countryArr = [], countrySelect = [], countryId = 0;
// Adding the GeoJSON data to the Leaflet GeoJSON layer
$.each(geojson.features, function(i, feature) {
var filterOutFeature = false;
// If restricting by project, we just do not load the features of other projects
// Reasons:
// 1) readability (other projects, even less opaque still clutter the map)
// 2) popup sometimes hijacked by another project's, with no control which popup will open (even when other marker's opacity is 0)
if (/^P.*/.test(projectIdInUrl))
{
if (feature.properties.no !== Number(projectIdInUrl.replace("P","")))
{
filterOutFeature = true;
}
}
if (!filterOutFeature)
{
projectLayer.addData(feature);
// Build an array of countries without duplicates
if($.inArray(feature.properties.country, countryArr) === -1)
{
countryArr.push(feature.properties.country);
}
}
});
// Sorting alphabetically for better presentation
countryArr.sort();
// Building the slect box data array of id/text
for (c in countryArr)
{
countrySelect.push({id:(countryId++).toString(),text:countryArr[c]});
}
// The country array to initialise the country select box
$('#countrySelect').select2({
data: countrySelect,
placeholder: "Filter by country",
allowClear: true,
formatResult: formatCountry,
formatSelection: formatCountry,
escapeMarkup: function(m) { return m; }
})
.on("change", function(e) {
//console.log("change "+JSON.stringify({val:e.val, added:e.added, removed:e.removed}));
var visibleFeatureArr = [];
if (e.added)
{
// A selection has been operated, we need to filter the projects by the selected country
$.each(map._layers,function(i,f) {
if (f.feature && f.feature.properties)
{
if (f.feature.properties.country == e.added.text) {
f.setStyle({opacity:opacityFilteredProjIn,fillOpacity:opacityFilteredProjIn});
visibleFeatureArr.push(new L.latLng(f.feature.properties.latitude,f.feature.properties.longitude));
} else {f.setStyle({opacity:opacityFilteredProjOut,fillOpacity:opacityFilteredProjOut});}
}
});
}
else
{
// A deselection has been operated, we need to remove the country filter
$.each(map._layers,function(i,f) {
if (f.feature) {
f.setStyle({opacity:opacityFilteredProjIn,fillOpacity:opacityFilteredProjIn});
visibleFeatureArr.push(new L.latLng(f.feature.properties.latitude,f.feature.properties.longitude));
}
});
}
// Manual adjustment to extend the bounding box if only one project
if (visibleFeatureArr.length == 1)
{
visibleFeatureArr.push(new L.latLng(visibleFeatureArr[0].lat - extendLat, visibleFeatureArr[0].lng - extendLng));
visibleFeatureArr.push(new L.latLng(visibleFeatureArr[0].lat + extendLat, visibleFeatureArr[0].lng + extendLng));
}
// Setting the viewport to these visible features only, with a 10% buffer
map.fitBounds(new L.latLngBounds(visibleFeatureArr).pad(paddingAroundFilteredProj));
// Closing a popup if it was opened
$.each(map._layers,function(i,f) {
if (f.closePopup) {
f.closePopup();
}
});
}).on("select2-close", function () {
setTimeout(function() {
$('.select2-container-active').removeClass('select2-container-active');
$(':focus').blur();
}, 1);
});
// Zoom to project in URL or to bounding box of all projects
zoomToProject(projectIdInUrl);
}
);
map.on('popupopen', function() {
$('a.zoomTo').click(function(){
// Clicked project
var clickedProject = $(this).attr("href").substr(1);
//console.log(clickedProject);
zoomToProject(clickedProject);
});
});
</script>
</body>
</html>