function LeafletHelper() {
// Create the map
var map = L.map('map').setView([39.5, -0.5], 4);
// Set up the OSM layer
var baseLayer = L.tileLayer(
'http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
maxZoom: 18
}).addTo(map);
var baseLayers = {
"OSM tiles": baseLayer
};
this.map = map;
this.BaseLayers = {
"OSM tiles": baseLayer
};
this.LayersControl = L.control.layers(baseLayers).addTo(map);
this.Overlays = [];
this.AddOverlay = function (layerOptions, markers) {
var zIndex = this.Overlays.length;
var layerGroup = L.layerGroup(markers).addTo(map);
this.LayersControl.addOverlay(layerGroup, layerOptions.title);
this.Overlays.push({
zIndex: zIndex,
LeafletLayer: layerGroup,
Options: layerOptions,
InitialMarkers: markers,
Title: layerOptions.title
});
return layerGroup;
}
this.RemoveOverlays = function() {
for (var i = 0, len = this.Overlays.length; i < len; i++) {
var layer = this.Overlays[i].LeafletLayer;
this.map.removeLayer(layer);
this.LayersControl.removeLayer(layer);
}
this.Overlays = [];
}
this.SetZIndexByTitle = function (title, zIndex) {
var _this = this;
// remove overlays, order them, and re-add in order
var overlays = this.Overlays; // save reference
this.RemoveOverlays();
this.Overlays = overlays; // restore reference
// filter overlays and set zIndex (may be multiple if dup title)
overlays.forEach(function (item, idx, arr) {
if (item.Title === title) {
item.zIndex = zIndex;
}
});
// sort by zIndex ASC
overlays.sort(function (a, b) {
return a.zIndex - b.zIndex;
});
// re-add overlays to map and layers control
overlays.forEach(function (item, idx, arr) {
item.LeafletLayer.addTo(_this.map);
_this.LayersControl.addOverlay(item.LeafletLayer, item.Title);
});
}
}
window.helper = new LeafletHelper();
AddOverlays = function() {
// does not check for dups.. for simple example purposes only
helper.AddOverlay({
title: "Marker A"
}, [L.marker([36.83711, -2.464459]).bindPopup("Marker A")]);
helper.AddOverlay({
title: "Marker B"
}, [L.marker([36.83711, -3.464459]).bindPopup("Marker B")]);
helper.AddOverlay({
title: "Marker C"
}, [L.marker([36.83711, -4.464459]).bindPopup("Marker c")]);
helper.AddOverlay({
title: "Marker D"
}, [L.marker([36.83711, -5.464459]).bindPopup("Marker D")]);
}
AddOverlays();
var z = helper.Overlays.length;
ChangeZIndex = function() {
helper.SetZIndexByTitle(helper.Overlays[0].Title, z++);
}
ChangeZIndexAnim = function() {
StopAnim();
var stuff = ['A', 'B', 'C', 'D'];
var idx = 0;
var ms = 200;
window.tt = setInterval(function() {
var title = "Marker " + stuff[idx++ % stuff.length];
helper.SetZIndexByTitle(title, z++);
}, ms);
}
StopAnim = function() {
if (window.tt) clearInterval(window.tt);
}
#map {
height: 400px;
}
<link rel="stylesheet" type="text/css" href="http://cdn.leafletjs.com/leaflet-0.6.4/leaflet.css">
<script type='text/javascript' src="http://cdn.leafletjs.com/leaflet-0.6.4/leaflet.js"></script>
<div id="map"></div>
<input type='button' value='Remove overlays' onclick='helper.RemoveOverlays();' />
<input type='button' value='Add overlays' onclick='AddOverlays();' />
<input type='button' value='Move bottom marker to top' onclick='ChangeZIndex();' />
<input type='button' value='Change z Index (Animated)' onclick='ChangeZIndexAnim();' />
<input type='button' value='Stop animation' onclick='StopAnim();' />
Folleto también ha añadido recientemente el método setZIndex que se puede utilizar en TileLayer gestionar manualmente los azulejos capas orden con CSS –