Control.Attribution
var ukrainianFlag =
'<svg aria-hidden="true" xmlns="http://www.w3.org/2000/svg" width="12" height="8" viewBox="0 0 12 8" class="leaflet-attribution-flag"><path fill="#4C7BE1" d="M0 0h12v4H0z"/><path fill="#FFD500" d="M0 4h12v3H0z"/><path fill="#E0BC00" d="M0 7h12v1H0z"/></svg>';
export var Attribution = Control.extend({
options: {
position: "bottomright",
prefix:
'<a href="https://leafletjs.com" title="A JavaScript library for interactive maps">' +
(Browser.inlineSvg ? ukrainianFlag + " " : "") +
"Leaflet</a>",
},
initialize: function (options) {
Util.setOPtions(this, options);
this._attributions = {};
},
onAdd: function (map) {
map.attributionControl = this;
this._container = DomUtil.create("div", "leaflet-control-attribution");
DomEvent.disableClickPropagation(this._container);
for (var i in map._layers) {
if (map._layers[i].getAttribution) {
this.addAttribution(map._layers[i].getAttribution());
}
}
this._update();
map.on("layeradd", this._addAttribution, this);
return this._container;
},
onRemove: function (map) {
map.off("layeradd", this._addAttribution, this);
},
_addAttribution: function (ev) {
if (ev.layer.getAttribution) {
this.addAttribution(ev.layer.getAttribution());
ev.layer.once(
"remove",
function () {
this.removeAttribution(ev.layer.getAttribution());
},
this
);
}
},
setPrefix: function (prefix) {
this.options.prefix = prefix;
this._update();
return this;
},
addAttribution: function (text) {
if (!text) {
return this;
}
if (!this._attributions[text]) {
this._attributions[text] = 0;
}
this._attributions[text]++;
this._update();
return this;
},
removeAttribution: function (text) {
if (!text) {
return this;
}
if (this._attributions[text]) {
this._attributions[text]--;
this._update();
}
return this;
},
_update: function () {
if (!this._map) {
return;
}
var attribs = [];
for (var i in this._attributions) {
if (this._attributions[i]) {
attribs.push(i);
}
}
var prefixAndAttribs = [];
if (this.options.prefix) {
prefixAndAttribs.push(this.options.prefix);
}
if (attribs.length) {
prefixAndAttribs.push(attribs.join(", "));
}
this._container.innerHTML = prefixAndAttribs.join(
' <span aria-hidden="true">|</span> '
);
},
});
Map.mergeOptions({
attributionControl: true,
});
Map.addInitHook(function () {
if (this.options.attributionControl) {
new Attribution().addTo(this);
}
});
export var attribution = function (options) {
return new Attribution(options);
};
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上次更新: 2025/03/24, 06:51:02