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import {Control} from './Control';
import {Map} from '../map/Map';
import * as Util from '../core/Util';
import * as DomEvent from '../dom/DomEvent';
import * as DomUtil from '../dom/DomUtil';
/*
* @class Control.Attribution
* @aka L.Control.Attribution
* @inherits Control
*
* The attribution control allows you to display attribution data in a small text box on a map. It is put on the map by default unless you set its [`attributionControl` option](#map-attributioncontrol) to `false`, and it fetches attribution texts from layers with the [`getAttribution` method](#layer-getattribution) automatically. Extends Control.
*/
export var Attribution = Control.extend({
// @section
// @aka Control.Attribution options
options: {
position: 'bottomright',
// @option prefix: String = 'Leaflet'
// The HTML text shown before the attributions. Pass `false` to disable.
prefix: '<a href="http://leafletjs.com" title="A JS library for interactive maps">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);
// TODO ugly, refactor
for (var i in map._layers) {
if (map._layers[i].getAttribution) {
this.addAttribution(map._layers[i].getAttribution());
}
}
this._update();
return this._container;
},
// @method setPrefix(prefix: String): this
// Sets the text before the attributions.
setPrefix: function (prefix) {
this.options.prefix = prefix;
this._update();
return this;
},
// @method addAttribution(text: String): this
// Adds an attribution text (e.g. `'Vector data © Mapbox'`).
addAttribution: function (text) {
if (!text) { return this; }
if (!this._attributions[text]) {
this._attributions[text] = 0;
}
this._attributions[text]++;
this._update();
return this;
},
// @method removeAttribution(text: String): this
// Removes an attribution text.
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(' | ');
}
});
// @namespace Map
// @section Control options
// @option attributionControl: Boolean = true
// Whether a [attribution control](#control-attribution) is added to the map by default.
Map.mergeOptions({
attributionControl: true
});
Map.addInitHook(function () {
if (this.options.attributionControl) {
new Attribution().addTo(this);
}
});
// @namespace Control.Attribution
// @factory L.control.attribution(options: Control.Attribution options)
// Creates an attribution control.
export var attribution = function (options) {
return new Attribution(options);
};
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