/* encoding: utf-8
*
* Redmine plugin for Document Management System "Features"
*
* Copyright (C) 2011-16 Karel Pičman <karel.picman@kontron.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/

/* Function to allow the projects to show up as a tree */
function dmsf_toggle(EL, PM)
{
  var els = document.getElementsByTagName('tr');
  var elsLen = els.length;
  var pattern = new RegExp("(^|\\s)" + EL + "(\\s|$)");
  var cpattern = new RegExp('span');
  var expand = new RegExp('dmsf_expanded');
  var collapse = new RegExp('dmsf_collapsed');
  var hide = new RegExp('dmsf_hidden');
  var spanid = PM;
  var classid = new RegExp('junk');
  var oddeventoggle = 0;

  for(i = 0; i < elsLen; i++)
  {
    if(cpattern.test(els[i].id))
    {
      var tmpspanid = spanid;
      var tmpclassid = classid;

      spanid = els[i].id;
      classid = spanid;
      classid = classid.match(/(\w+)span/)[1];
      classid = new RegExp(classid);

      if(tmpclassid.test(els[i].className) && (tmpspanid.toString() !== PM.toString()))
      {
        if(collapse.test(document.getElementById(tmpspanid).className))
        {
          spanid = tmpspanid;
          classid = tmpclassid;
        }
      }
    }

    if(pattern.test(els[i].className))
    {
      var cnames = els[i].className;

      cnames = cnames.replace(/dmsf_hidden/g,'');

      if(expand.test(document.getElementById(PM).className))
      {
        cnames += ' dmsf_hidden';
      }
      else
      {
        if((spanid.toString() !== PM.toString()) && (classid.test(els[i].className)))
        {
          if(collapse.test(document.getElementById(spanid).className))
          {
            cnames += ' dmsf_hidden';
          }
        }
      }

      els[i].className = cnames;
    }

    if(!(hide.test(els[i].className)))
    {
      var cnames = els[i].className;

      cnames = cnames.replace(/odd/g,'');
      cnames = cnames.replace(/even/g,'');

      if(oddeventoggle === 0)
      {
        cnames += ' odd';
      }
      else
      {
        cnames += ' even';
      }

      oddeventoggle ^= 1;
      els[i].className = cnames;
    }
  }

  if (collapse.test(document.getElementById(PM).className))
  {
    var cnames = document.getElementById(PM).className;

    cnames = cnames.replace(/dmsf_collapsed/,'dmsf_expanded');
    document.getElementById(PM).className = cnames;
  }
  else
  {
    var cnames = document.getElementById(PM).className;

    cnames = cnames.replace(/dmsf_expanded/,'dmsf_collapsed');
    document.getElementById(PM).className = cnames;
  }
}