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L.Control.Attribution = L.Class.extend({
onAdd: function(map) {
this._container = L.DomUtil.create('div', 'leaflet-control-attribution');
this._map = map;
this._prefix = 'Powered by <a href="http://leaflet.cloudmade.com">Leaflet</a>';
this._attributions = {};
this._update();
},
getPosition: function() {
return L.Control.Position.BOTTOM_RIGHT;
},
getContainer: function() {
return this._container;
},
setPrefix: function(prefix) {
this._prefix = prefix;
},
addAttribution: function(text) {
if (!text) return;
this._attributions[text] = true;
this._update();
},
removeAttribution: function(text) {
if (!text) return;
delete this._attributions[text];
this._update();
},
_update: function() {
if (!this._map) return;
var attribs = [];
for (var i in this._attributions) {
if (this._attributions.hasOwnProperty(i)) {
attribs.push(i);
}
}
var prefixAndAttribs = [];
if (this._prefix) {
prefixAndAttribs.push(this._prefix);
}
if (attribs.length) {
prefixAndAttribs.push(attribs.join(', '));
}
this._container.innerHTML = prefixAndAttribs.join(' — ');
}
});
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