text: //-- copyright
  // OpenProject is a project management system.
  // Copyright (C) 2012-2017 the OpenProject Foundation (OPF)
  //
  // This program is free software; you can redistribute it and/or
  // modify it under the terms of the GNU General Public License version 3.
  //
  // OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
  // Copyright (C) 2006-2017 Jean-Philippe Lang
  // Copyright (C) 2010-2013 the ChiliProject Team
  //
  // 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.
  //
  // See doc/COPYRIGHT.rdoc for more details.
  //++
  
  function createFieldsetToggleStateLabel(legend, text) {
    var labelClass = 'fieldset-toggle-state-label';
    var toggleLabel = legend.find('a span.' + labelClass);
    var legendLink = legend.children('a');
  
    if (toggleLabel.length === 0) {
      toggleLabel = jQuery("<span />").addClass(labelClass)
                                      .addClass("hidden-for-sighted");
  
      legendLink.append(toggleLabel);
    }
  
    toggleLabel.text(' ' + text);
  }
  
  function setFieldsetToggleState(fieldset) {
    var legend = fieldset.children('legend');
  
  
    if (fieldset.hasClass('collapsed')) {
      createFieldsetToggleStateLabel(legend, I18n.t('js.label_collapsed'));
    } else {
      createFieldsetToggleStateLabel(legend, I18n.t('js.label_expanded'));
    }
  }
  
  function getFieldset(el) {
    var element = jQuery(el);
  
    if (element.is('legend')) {
      return jQuery(el).parent();
    } else if (element.is('fieldset')) {
      return element;
    }
  
    throw "Cannot derive fieldset from element!";
  }
  
  function toggleFieldset(el) {
    var fieldset = getFieldset(el);
    var contentArea = fieldset.find('> div');
  
    fieldset.toggleClass('collapsed');
    contentArea.slideToggle('fast', null);
  
    setFieldsetToggleState(fieldset);
  }
  
  jQuery(document).ready(function() {
    jQuery('fieldset.form--fieldset.-collapsible').each(function() {
      var fieldset = getFieldset(this);
  
      var contentArea = fieldset.find('> div');
      if (fieldset.hasClass('collapsed')) {
        contentArea.hide();
      }
  
      setFieldsetToggleState(fieldset);
    });
  });
  