// $Id: profile.js,v 1.2 2007/12/08 14:06:22 goba Exp $

/**

 * Add functionality to the profile drag and drop table.

 *

 * This behavior is dependent on the tableDrag behavior, since it uses the

 * objects initialized in that behavior to update the row. It shows and hides

 * a warning message when removing the last field from a profile category.

 */

Drupal.behaviors.profileDrag = function(context) {

  var table = $('#profile-fields');

  var tableDrag = Drupal.tableDrag['profile-fields']; // Get the profile tableDrag object.

  // Add a handler for when a row is swapped, update empty categories.

  tableDrag.row.prototype.onSwap = function(swappedRow) {

    var rowObject = this;

    $('tr.category-message', table).each(function() {

      // If the dragged row is in this category, but above the message row, swap it down one space.

      if ($(this).prev('tr').get(0) == rowObject.element) {

        // Prevent a recursion problem when using the keyboard to move rows up.

        if ((rowObject.method != 'keyboard' || rowObject.direction == 'down')) {

          rowObject.swap('after', this);

        }

      }

      // This category has become empty

      if ($(this).next('tr').is(':not(.draggable)') || $(this).next('tr').size() == 0) {

        $(this).removeClass('category-populated').addClass('category-empty');

      }

      // This category has become populated.

      else if ($(this).is('.category-empty')) {

        $(this).removeClass('category-empty').addClass('category-populated');

      }

    });

  };

  // Add a handler so when a row is dropped, update fields dropped into new categories.

  tableDrag.onDrop = function() {

    dragObject = this;

    if ($(dragObject.rowObject.element).prev('tr').is('.category-message')) {

      var categoryRow = $(dragObject.rowObject.element).prev('tr').get(0);

      var categoryNum = categoryRow.className.replace(/([^ ]+[ ]+)*category-([^ ]+)-message([ ]+[^ ]+)*/, '$2');

      var categoryField = $('select.profile-category', dragObject.rowObject.element);

      var weightField = $('select.profile-weight', dragObject.rowObject.element);

      var oldcategoryNum = weightField[0].className.replace(/([^ ]+[ ]+)*profile-weight-([^ ]+)([ ]+[^ ]+)*/, '$2');

      if (!categoryField.is('.profile-category-'+ categoryNum)) {

        categoryField.removeClass('profile-category-' + oldcategoryNum).addClass('profile-category-' + categoryNum);

        weightField.removeClass('profile-weight-' + oldcategoryNum).addClass('profile-weight-' + categoryNum);

        categoryField.val(categoryField[0].options[categoryNum].value);

      }

    }

  };

};