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Original file line number | Diff line number | Diff line change |
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<!DOCTYPE html> | ||
<html> | ||
<head> | ||
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> | ||
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0"> | ||
<meta name="apple-mobile-web-app-capable" content="yes"> | ||
<link rel="stylesheet" href="../../theme/default/style.css" type="text/css"> | ||
<link rel="stylesheet" href="../../examples/style.css" type="text/css"> | ||
<script src="../../lib/OpenLayers.js"></script> | ||
<script type="text/javascript"> | ||
var lon = 5; | ||
var lat = 40; | ||
var zoom = 5; | ||
var map, layer; | ||
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var numLoadingLayers = 0; | ||
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function init(){ | ||
map = new OpenLayers.Map( 'map' ); | ||
layer = new OpenLayers.Layer.WMS( "OpenLayers WMS", | ||
"http://vmap0.tiles.osgeo.org/wms/vmap0", {layers: 'basic'}); | ||
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layer.events.register('loadstart', this, onloadstart); | ||
layer.events.register('loadend', this, onloadend); | ||
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map.addLayer(layer); | ||
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map.setCenter(new OpenLayers.LonLat(lon, lat), zoom); | ||
} | ||
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function log(msg) { | ||
document.getElementById("output").innerHTML += msg + "<br />"; | ||
} | ||
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function onloadstart(evt) { | ||
numLoadingLayers++; | ||
var msg = ['loadstart', '# layers loading:', numLoadingLayers].join(' '); | ||
log (msg); | ||
}; | ||
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function onloadend(evt) { | ||
numLoadingLayers--; | ||
var msg = ['loadend ', '# layers loading:', numLoadingLayers].join(' '); | ||
log (msg); | ||
}; | ||
|
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</script> | ||
</head> | ||
<body onload="init()"> | ||
<h1 id="title">WMS loadstart/loadend events</h1> | ||
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<div id="tags"> | ||
wms, layer, singletile | ||
</div> | ||
<p id="shortdesc"> | ||
Shows the loadstart and loadend events of a WMS layer | ||
</p> | ||
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<div id="map" class="smallmap"></div> | ||
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<div id="docs"> | ||
<p> | ||
This example is helpful in testing whether all loadstart events are followed | ||
by a loadend event. | ||
Test by using scroll-wheel up and down. | ||
</p> | ||
</div> | ||
|
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<h1>loadstart and loadend events</h1> | ||
<pre id="output"></pre> | ||
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</body> | ||
</html> |