<?php
/*
 * Ajax form templates
 */
function qw_form_ajax()
{
  switch ($_POST['form'])
  {
    /*
     * Preview, special case
     */
    case 'preview':
      $decode = urldecode($_POST['options']);
      $options = array();
      parse_str($decode, $options);
      $options['qw-query-options']['args']['paged'] = 1;
      $args = array(
        'options' => $options['qw-query-options'],
        'query_id' => $_POST['query_id'],
      );
      print theme('query_preview', $args);
      exit;
      break;

    case 'sort_form':
      $template = 'query_sort';
      $all = qw_all_sort_options();
      break;

    case 'field_form':
      $template = 'query_field';
      $all = qw_all_fields();
      break;

    case 'filter_form':
      $template = 'query_filter';
      $all = qw_all_filters();
      break;

    case 'sort_sortable':
      $template = 'query_sort_sortable';
      $all = qw_all_sort_options();
      break;

    case 'field_sortable':
      $template = 'query_field_sortable';
      $all = qw_all_fields();
      break;

    case 'filter_sortable':
      $template = 'query_filter_sortable';
      $all = qw_all_filters();
      break;
  }

  /*
   * Generate handler item forms and data
   */
  $handler = $_POST['handler'];
  $item = array();

  $hook_key = qw_get_hook_key($all, $_POST);
  $item = $all[$hook_key];
  $item['name'] = $_POST['name'];
  $item['form_prefix'] = qw_make_form_prefix($handler, $item['name']);

  // handler item's form
  if (isset($item['form_callback']) && function_exists($item['form_callback'])){
    ob_start();
      $item['form_callback']($item);
    $item['form'] = ob_get_clean();
  }
  // provide template wrangler support
  else if (isset($item['form_template'])){
    $item['form'] = theme($item['form_template'], array($handler => $item));
  }

  $args = array(
    $handler => $item,
  );
  // weight for sortable handler items
  if (isset($_POST['next_weight'])){
    $args['weight'] = $_POST['next_weight'];
  }

  print theme($template, $args);
  exit;
}