GalleryItemClickedEventEvent that is fired when an image in a gallery is clicked.PropertiesStore values associated with an objectitemGets the gallery item.itemIndexGets the gallery item's index.contextGets the context in which an event was fired.targetGets the element that the event was fired on.typeGets the type of event that was fired.Mixes in:$w.GalleryItemChangedEvent, $w.Event