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| /*
* L.Control.Zoom is used for the default zoom buttons on the map.
*/
L.Control.Zoom = L.Control.extend({
options: {
position: 'topleft'
},
onAdd: function (map) {
var zoomName = 'leaflet-control-zoom',
container = L.DomUtil.create('div', zoomName + ' leaflet-bar');
this._map = map;
this._zoomInButton = this._createButton(
'+', 'Zoom in', zoomName + '-in', container, this._zoomIn, this);
this._zoomOutButton = this._createButton(
'-', 'Zoom out', zoomName + '-out', container, this._zoomOut, this);
map.on('zoomend zoomlevelschange', this._updateDisabled, this);
return container;
},
onRemove: function (map) {
map.off('zoomend zoomlevelschange', this._updateDisabled, this);
},
_zoomIn: function (e) {
this._map.zoomIn(e.shiftKey ? 3 : 1);
},
_zoomOut: function (e) {
this._map.zoomOut(e.shiftKey ? 3 : 1);
},
_createButton: function (html, title, className, container, fn, context) {
var link = L.DomUtil.create('a', className, container);
link.innerHTML = html;
link.href = '#';
link.title = title;
var stop = L.DomEvent.stopPropagation;
L.DomEvent
.on(link, 'click', stop)
.on(link, 'mousedown', stop)
.on(link, 'dblclick', stop)
.on(link, 'click', L.DomEvent.preventDefault)
.on(link, 'click', fn, context);
return link;
},
_updateDisabled: function () {
var map = this._map,
className = 'leaflet-disabled';
L.DomUtil.removeClass(this._zoomInButton, className);
L.DomUtil.removeClass(this._zoomOutButton, className);
if (map._zoom === map.getMinZoom()) {
L.DomUtil.addClass(this._zoomOutButton, className);
}
Iif (map._zoom === map.getMaxZoom()) {
L.DomUtil.addClass(this._zoomInButton, className);
}
}
});
L.Map.mergeOptions({
zoomControl: true
});
L.Map.addInitHook(function () {
Eif (this.options.zoomControl) {
this.zoomControl = new L.Control.Zoom();
this.addControl(this.zoomControl);
}
});
L.control.zoom = function (options) {
return new L.Control.Zoom(options);
};
|