ca2414c9d6
This makes sense for all controls that provide buttons or similar UI elements that don't interfer with map interaction.
92 lines
2.4 KiB
JavaScript
92 lines
2.4 KiB
JavaScript
goog.provide('ol.control.Attribution');
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goog.require('ol.event');
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goog.require('ol.control.Control');
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goog.require('goog.dom');
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/**
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* @constructor
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* @extends {ol.control.Control}
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* @param {boolean|undefined} opt_autoActivate
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*/
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ol.control.Attribution = function(opt_autoActivate) {
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goog.base(this, opt_autoActivate);
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/**
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* @type {Node}
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*/
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this.container_ = null;
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/**
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* Activate this control when it is added to a map. Default is true.
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*
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* @type {boolean} autoActivate
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*/
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this.autoActivate_ =
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goog.isDef(opt_autoActivate) ? opt_autoActivate : true;
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};
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goog.inherits(ol.control.Attribution, ol.control.Control);
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/**
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* @const {string}
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*/
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ol.control.Attribution.prototype.CLS = 'ol-control-attribution';
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/**
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* @param {ol.Map} map
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*/
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ol.control.Attribution.prototype.setMap = function(map) {
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var staticOverlay = map.getStaticOverlay();
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if (goog.isNull(this.container_)) {
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this.container_ = goog.dom.createDom('div', this.CLS);
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goog.events.listen(this.container_, 'click', ol.event.stopPropagation);
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}
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if (!goog.isNull(staticOverlay)) {
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goog.dom.append(staticOverlay, this.container_);
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}
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goog.base(this, 'setMap', map);
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};
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/** @inheritDoc */
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ol.control.Attribution.prototype.activate = function() {
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var active = goog.base(this, 'activate');
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if (active) {
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this.map_.getEvents().register('layeradd', this.update, this);
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this.update();
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}
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return active;
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};
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/** @inheritDoc */
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ol.control.Attribution.prototype.deactivate = function() {
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var inactive = goog.base(this, 'deactivate');
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if (inactive) {
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this.map_.getEvents().unregister('layeradd', this.update, this);
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}
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return inactive;
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};
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ol.control.Attribution.prototype.update = function() {
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var attribution = [],
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layers = this.map_.getLayers(), layerAttribution;
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for (var i=0, ii=layers.length; i<ii; ++i) {
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layerAttribution = layers[i].getAttribution();
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if (layerAttribution &&
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!~goog.array.indexOf(attribution, layerAttribution)) {
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attribution.push(layerAttribution);
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}
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}
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this.container_.innerHTML = attribution.join(', ');
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};
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ol.control.Attribution.prototype.destroy = function() {
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goog.events.unlisten(this.container_, 'click', ol.event.stopPropagation);
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goog.dom.removeNode(this.container_);
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goog.base(this, 'destroy');
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};
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ol.control.addControl('attribution', ol.control.Attribution); |