Club Drupal

(function ($) {

  Drupal.advanced_forum = Drupal.advanced_forum || {};

  Drupal.behaviors.advanced_forum = {

    attach: function(context) {

      // Retrieve the collapsed status from a stored cookie.

      // cookie format is: page1=1,2,3/page2=1,4,5/page3=5,6,1...

      var cookie = $.cookie('Drupal.advanced_forum.collapsed');

      var pages = cookie ? cookie.split('/') : [];

      // Create associative array where key=page path and value=comma-separated list of collapsed forum ids

      Drupal.advanced_forum.collapsed_page = [];

      if (pages) {

        for (var i = 0; i < pages.length; i++) {

          var tmp = pages[i].split('=');

          Drupal.advanced_forum.collapsed_page[tmp[0]] = tmp[1].split(',');

        }

      }

      // Get data for current page

      Drupal.advanced_forum.collapsed_current = Drupal.advanced_forum.collapsed_page[encodeURIComponent(window.location.pathname)];

      if (!Drupal.advanced_forum.collapsed_current) {

        Drupal.advanced_forum.collapsed_current = [];

        // For intial load default collapsed state settings needs to checked in init function.

        Drupal.advanced_forum.initial_load = 1;

      }

      else {

        Drupal.advanced_forum.initial_load = 0;

      }

      var handleElement = $('.forum-collapsible', context);

      // Set initial collapsed state

      handleElement.once('forum-collapsible', Drupal.advanced_forum.init);

      handleElement.addClass('clickable').click(function(event) {

        event.preventDefault();

        // Get forum id

        var id = $(this).attr('id').split('-')[2];

        if ( $(this).hasClass('container-collapsed')) {

          Drupal.advanced_forum.expand(id, Drupal.settings.advanced_forum.effect);

          // Reset collapsed status

          Drupal.advanced_forum.collapsed_current.splice($.inArray(id, Drupal.advanced_forum.collapsed_current),1);

        }

        else {

          Drupal.advanced_forum.collapse(id, Drupal.settings.advanced_forum.effect);

          // Set collapsed status

          Drupal.advanced_forum.collapsed_current.push(id);

        }

        // Put status back

        Drupal.advanced_forum.collapsed_page[encodeURIComponent(window.location.pathname)] = Drupal.advanced_forum.collapsed_current;

        // Build cookie string

        cookie = '';

        for (var x in Drupal.advanced_forum.collapsed_page) {

          cookie += '/' + x + '=' + Drupal.advanced_forum.collapsed_page[x];

        }

        // Save new cookie

        $.cookie(

          'Drupal.advanced_forum.collapsed',

          cookie.substr(1),

          {

            path: '/',

            // The cookie should "never" expire.

            expires: 36500

          }

          );

      });

    }

  };

  /**

   * Initialize and set collapsible status.

   * Initial collapsing/expanding effect is set to 'toggle' to avoid flickers.

   */

  Drupal.advanced_forum.init = function() {

    // get forum id

    var id = $(this).attr('id').split('-')[2];

    // On initial load, deal with default collapsed state of containers.

    if(Drupal.advanced_forum.initial_load) {

      var list = 0;

      for(list in Drupal.settings.advanced_forum.default_collapsed_list) {

        if (id == list) {

          Drupal.advanced_forum.collapse(id, 'toggle');

          break;

        }

      }

    }

    else {

      // Check if item is collapsed

      if ($.inArray(id, Drupal.advanced_forum.collapsed_current) > -1) {

        $(this)

        .addClass('container-collapsed')

        .parent().addClass('container-collapsed');

        Drupal.advanced_forum.collapse(id, 'toggle');

      }

      else {

        $(this)

        .removeClass('container-collapsed')

        .parent().removeClass('container-collapsed');

        Drupal.advanced_forum.expand(id, 'toggle');

      }

    }

  };

  Drupal.advanced_forum.collapse = function(id, effect) {

    switch(effect) {

      case 'fade':

        $('#forum-table-' + id).fadeOut('fast');

        break;

      case 'slide':

        $('#forum-table-' + id).slideUp('fast');

        break;

      default:

        $('#forum-table-' + id).hide();

    }

    $('#forum-collapsible-' + id)

    .addClass('container-collapsed')

    .parent().addClass('container-collapsed');

  };

  Drupal.advanced_forum.expand = function(id, effect) {

    switch(effect) {

      case 'fade':

        $('#forum-table-' + id).fadeIn('fast');

        break;

      case 'slide':

        $('#forum-table-' + id).slideDown('fast');

        break;

      default:

        $('#forum-table-' + id).show();

    }

    $('#forum-collapsible-' + id)

    .removeClass('container-collapsed')

    .parent().removeClass('container-collapsed');

  };

})(jQuery);