/**
 * Map grid element shortcodes.
 *
 * @since 4.5
 */
function vc_grid_item_map_shortcodes()
{
    require_once vc_path_dir('PARAMS_DIR', 'vc_grid_item/class-vc-grid-item.php');
    $grid_item = new Vc_Grid_Item();
    $grid_item->mapShortcodes();
    vc_mapper()->setCheckForAccess(false);
}
/**
 *  Render preview for grid item
 * @since 4.4
 */
function vc_grid_item_render_preview()
{
    require_once vc_path_dir('PARAMS_DIR', 'vc_grid_item/class-vc-grid-item.php');
    $grid_item = new Vc_Grid_Item();
    $grid_item->mapShortcodes();
    require_once vc_path_dir('PARAMS_DIR', 'vc_grid_item/editor/class-vc-grid-item-preview.php');
    $vcGridPreview = new Vc_Grid_Item_Preview();
    add_filter('vc_gitem_template_attribute_post_image_background_image_css_value', array($vcGridPreview, 'addCssBackgroundImage'));
    add_filter('vc_gitem_template_attribute_post_image_url_value', array($vcGridPreview, 'addImageUrl'));
    $vcGridPreview->render();
    die;
}
/**
 * Map grid element shortcodes.
 *
 * @since 4.5
 */
function vc_grid_item_map_shortcodes()
{
    require_once vc_path_dir('PARAMS_DIR', 'vc_grid_item/class-vc-grid-item.php');
    $grid_item = new Vc_Grid_Item();
    $grid_item->mapShortcodes();
}
<?php

require_once vc_path_dir('PARAMS_DIR', 'vc_grid_item/editor/popups/class-vc-add-element-box-grid-item.php');
$add_element_box = new Vc_Add_Element_Box_Grid_Item();
$add_element_box->render();
// Edit form for mapped shortcode.
visual_composer()->editForm()->render();
require_once vc_path_dir('PARAMS_DIR', 'vc_grid_item/editor/popups/class-vc-templates-editor-grid-item.php');
$templates_editor = new Vc_Templates_Editor_Grid_Item();
$templates_editor->render();
require_once vc_path_dir('EDITORS_DIR', 'popups/class-vc-edit-layout.php');
$edit_layout = new Vc_Edit_Layout();
$edit_layout->render();
$grid_item = new Vc_Grid_Item();
$shortcodes = $grid_item->shortcodes();
$grid_item->mapShortcodes();
?>
<script type="text/javascript">
	var vc_user_mapper = <?php 
echo json_encode($shortcodes);
?>
,
		vc_mapper = <?php 
echo json_encode($shortcodes);
?>
,
		vc_frontend_enabled = false,
		vc_mode = '<?php 
echo vc_mode();
?>
';