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Cleaning up map layers when map.remove() is run

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This commit is contained in:
Iván Sánchez Ortega 2015-06-04 16:20:13 +02:00
parent 7bc37fe09a
commit 81b038926c
2 changed files with 60 additions and 0 deletions
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56
debug/tests/detached-dom-memory-leak.html Normal file
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@ -0,0 +1,56 @@
<!DOCTYPE html>
<html>
<head>
<title>Leaflet debug page</title>
<link rel="stylesheet" href="../../dist/leaflet.css" />
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="../css/screen.css" />
<script type="text/javascript" src="../../build/deps.js"></script>
<script src="../leaflet-include.js"></script>
<script>
var map,
mapDiv,
osm = L.tileLayer('http://{s}.tile.osm.org/{z}/{x}/{y}.png');
recreateMap = function(){
// destroy previous map and div
if(map) map.remove(); // This will destroy all DOM childs from layers and controls
if(mapDiv) mapDiv.parentNode.removeChild(mapDiv); // This will destroy the map div
// create new map div
var randomDivId = 'mapId' + new Date().getTime();
mapDiv = document.createElement('div');
mapDiv.id = randomDivId;
mapDiv.style.height = '200px';
mapDiv.style.width = '200px';
document.getElementsByTagName('body')[0].appendChild(mapDiv);
// attach map to div
map = L.map(randomDivId).setView([51.505, -0.09], 13);
map.addLayer(osm);
};
var interval = null;
function start(){
interval = window.setInterval(recreateMap, 200);
}
function stop() {
window.clearInterval(interval);
}
</script>
</head>
<body>
This page will destroy and recreate a map div lots of times. Developer tools shall not display a memory leak.
<div>
<button onclick='recreateMap();'>Once</button>
<button onclick='start();'>Start</button>
<button onclick='stop();'>Stop</button>
</div>
</body>
</html>

4
src/map/Map.js
View File

@ -272,6 +272,10 @@ L.Map = L.Evented.extend({
this.fire('unload'); this.fire('unload');
} }
for (var i in this._layers) {
this._layers[i].remove();
}
return this; return this;
}, },