Add basic docs for attributioncontrol

src/ol/control/attributioncontrol.js

@@ -210,6 +210,7 @@ ol.control.Attribution.prototype.getSourceAttributions = function(frameState) {
 
 
 /**
+ * Update the attribution element.
  * @param {ol.MapEvent} mapEvent Map event.
  * @this {ol.control.Attribution}
  * @api
@@ -365,6 +366,7 @@ ol.control.Attribution.prototype.handleToggle_ = function() {
 
 
 /**
+ * Return `true` if the attribution is collapsible, `false` otherwise.
  * @return {boolean} True if the widget is collapsible.
  * @api stable
  */
@@ -374,6 +376,7 @@ ol.control.Attribution.prototype.getCollapsible = function() {
 
 
 /**
+ * Set whether the attribution should be collapsible.
  * @param {boolean} collapsible True if the widget is collapsible.
  * @api stable
  */
@@ -390,6 +393,9 @@ ol.control.Attribution.prototype.setCollapsible = function(collapsible) {
 
 
 /**
+ * Collapse or expand the attribution according to the passed parameter. Will
+ * not do anything if the attribution isn't collapsible or if the current
+ * collapsed state is already the one requested.
  * @param {boolean} collapsed True if the widget is collapsed.
  * @api stable
  */
@@ -402,6 +408,8 @@ ol.control.Attribution.prototype.setCollapsed = function(collapsed) {
 
 
 /**
+ * Return `true` when the attribution is currently collapsed or `false`
+ * otherwise.
  * @return {boolean} True if the widget is collapsed.
  * @api stable
  */