public function determine_current_page() {
		$current_screen = function_exists( 'get_current_screen' ) ? get_current_screen() : null;

		if ( is_null( $current_screen ) ) {
			$this->current_page = tribe_get_request_var( 'page' );
			return $this->current_page;
		}

		$this->current_page = $current_screen->id;

		return $this->current_page;
	}