Submission::get_current_container()

	public function get_current_container() {
		$container_id = (int) $this->__get( 'current_container_id' );

		if ( ! empty( $container_id ) ) {
			$container = $this->manager->get_parent_manager( 'forms' )->get_child_manager( 'containers' )->get( $container_id );
		} else {
			$form = $this->get_form();
			if ( ! $form ) {
				return null;
			}

			$container_collection = $form->get_containers( array(
				'number'        => 1,
				'orderby'       => array(
					'sort' => 'ASC',
				),
				'no_found_rows' => true,
			) );
			if ( 1 > count( $container_collection ) ) {
				return null;
			}

			$container = $container_collection[0];
			$this->set_current_container( $container );
		}

		return $container;
	}