578f74eb86
Each control is responsible for its handlers. And all controls are rendered into an overlay, not any more depending on assumptions about link click handling.
103 lines
2.7 KiB
JavaScript
103 lines
2.7 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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// This is not registered as priority listener, so priority listeners
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// can still get the click event.
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map.getEvents().register('click', this.stopLinkClick, this);
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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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/**
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* Prevent clicks on links in the attribution from getting through to
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* listeners.
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*/
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ol.control.Attribution.prototype.stopLinkClick = function(evt) {
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var node = evt.target;
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return node.nodeName !== 'A' ||
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!goog.dom.getAncestorByClass(node, this.CLS);
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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.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); |