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# anim_accord.js Example File

webkit/webkit-guide/js/anim_accord.js

     /****************************************************************************
     **
     ** Copyright (C) 2015 The Qt Company Ltd.
     ** Contact: http://www.qt.io/licensing/
     **
     ** This file is part of the Qt WebKit module of the Qt Toolkit.
     **
     ** $QT_BEGIN_LICENSE:BSD$
     ** You may use this file under the terms of the BSD license as follows:
     **
     ** "Redistribution and use in source and binary forms, with or without
     ** modification, are permitted provided that the following conditions are
     ** met:
     **   * Redistributions of source code must retain the above copyright
     **     notice, this list of conditions and the following disclaimer.
     **   * Redistributions in binary form must reproduce the above copyright
     **     notice, this list of conditions and the following disclaimer in
     **     the documentation and/or other materials provided with the
     **     distribution.
     **   * Neither the name of The Qt Company Ltd nor the names of its
     **     contributors may be used to endorse or promote products derived
     **     from this software without specific prior written permission.
     **
     **
     ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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     ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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     window.onload = function() {

         initDT();
         document.querySelector('body').addEventListener('click', function(event){
             var dl = document.querySelector('#accordion');
             var ct = event.currentTarget;
             var t = event.target;
             var dt;
             if (t.id == 'accordion' && t.className == 'collapsed') {
                  dl.className = 'expanded';
             }
             else if (t.tagName == 'DT' && t.parentNode.id == 'accordion') {
                  if ( t.className == 'collapsed' ) {
                      t.className = 'expanded';
                  }
                  else {
                      t.className = 'collapsed';
                  }
             }
             else {
                  dl.className = 'collapsed';
                  initDT();
             }
         });
     };

     function initDT() {
         var el = nlToAr(document.querySelectorAll('#accordion > dt'));
         el.forEach( function(l){ l.className = 'collapsed'; });
     }

     function nlToAr(nl) {
         var a = new Array();
         var l = nl.length;
         var i = l - 1;
         a[i] = true;
         for ( i = 0; i < l ; i++ ) { a[i] = nl[i]; }
         return(a);
     }