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/**
* @license Copyright (c) 2003-2015, CKSource - Frederico Knabben. All rights reserved.
* Licensed under the terms of the MIT license. See LICENSE.md for more information.
*/
/* global SF */
'use strict';
( function() {
// All .tree-a elements in DOM.
var trees = SF.getByClass( 'tree-a' );
for ( var i = trees.length; i--; ) {
var tree = trees[ i ];
SF.attachListener( tree, 'click', function( evt ) {
var target = evt.target || evt.srcElement;
// Collapse or expand item groups.
if ( target.nodeName === 'H2' && !SF.classList.contains( target, 'tree-a-no-sub' ) ) {
SF.classList.toggle( target, 'tree-a-active' );
}
} );
}
} )();