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CartoDB.js Layer Selector
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>Layer selector example | CartoDB.js</title> | |
| <meta name="viewport" content="initial-scale=1.0, user-scalable=no" /> | |
| <meta http-equiv="content-type" content="text/html; charset=UTF-8"/> | |
| <link rel="shortcut icon" href="http://cartodb.com/assets/favicon.ico" /> | |
| <style> | |
| html, body, #map { | |
| height: 100%; | |
| padding: 0; | |
| margin: 0; | |
| background: black; | |
| } | |
| #layer_selector { | |
| position: absolute; | |
| top: 20px; | |
| right: 20px; | |
| padding: 0; | |
| } | |
| #layer_selector ul { | |
| padding: 0; margin: 0; | |
| list-style-type: none; | |
| } | |
| #layer_selector li { | |
| border-bottom: 1px solid #999; | |
| padding: 15px 30px; | |
| font-family: "Helvetica", Arial; | |
| font-size: 13px; | |
| color: #444; | |
| cursor: auto; | |
| } | |
| #layer_selector li:hover { | |
| background-color: #F0F0F0; | |
| cursor: pointer; | |
| } | |
| #layer_selector li.selected { | |
| background-color: #EEE; | |
| } | |
| </style> | |
| <link rel="stylesheet" href="http://libs.cartocdn.com/cartodb.js/v3/themes/css/cartodb.css" /> | |
| <!--[if lte IE 8]> | |
| <link rel="stylesheet" href="http://libs.cartocdn.com/cartodb.js/v3/themes/css/cartodb.ie.css" /> | |
| <![endif]--> | |
| </head> | |
| <body> | |
| <div id="map"></div> | |
| <div id="layer_selector" class="cartodb-infobox"> | |
| <ul> | |
| <li id="abc" class="selected">All</li> | |
| <li id="efg">Places</li> | |
| <li id="hij">Cables</li> | |
| </ul> | |
| </div> | |
| <!-- include cartodb.js library --> | |
| <script src="http://libs.cartocdn.com/cartodb.js/v3/cartodb.js"></script> | |
| <script> | |
| var selectedLayer; | |
| // create layer selector | |
| function createSelector(layers) { | |
| var sql = new cartodb.SQL({ user: 'documentation' }); | |
| var $options = $('#layer_selector li'); | |
| $options.click(function(e) { | |
| // get the area of the selected layer | |
| var $li = $(e.target); | |
| var layer = $li.attr('id'); | |
| if(selectedLayer != layer ){ | |
| // definitely more elegant ways to do this, but went for | |
| // ease of understanding | |
| if (layer == 'abc'){ | |
| layers.getSubLayer(0).show(); // countries | |
| layers.getSubLayer(1).show(); // cables | |
| layers.getSubLayer(2).show(); // populated places | |
| } | |
| else if (layer == 'efg') { | |
| layers.getSubLayer(0).show(); | |
| layers.getSubLayer(1).hide(); | |
| layers.getSubLayer(2).show(); | |
| } | |
| else { | |
| layers.getSubLayer(0).show(); | |
| layers.getSubLayer(1).show(); | |
| layers.getSubLayer(2).hide(); | |
| } | |
| } | |
| }); | |
| } | |
| var layerN = {}; | |
| function main() { | |
| var map = L.map('map', { | |
| zoomControl: true, | |
| center: [40, -10], | |
| zoom: 4 | |
| }); | |
| // get the currently selected style | |
| selectedStyle = $('li.selected').attr('id'); | |
| cartodb.createLayer(map, 'http://osm2.cartodb.com/api/v2/viz/c15905de-c1c3-11e3-a215-0e230854a1cb/viz.json') | |
| .addTo(map) | |
| .done(function(layers) { | |
| createSelector(layers); | |
| }) | |
| .error(function(err) { | |
| console.log(err); | |
| }); | |
| } | |
| window.onload = main; | |
| </script> | |
| </body> | |
| </html> |
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