protected function update_screen_modal_js() {
		?>
		<script>
			( function( $ ) {
				var modal_dismissed = false;

				// Show the modal if the WC upgrade checkbox is checked.
				var show_modal_if_checked = function() {
					if ( modal_dismissed ) {
						return;
					}
					var $checkbox = $( 'input[value="woocommerce/woocommerce.php"]' );
					if ( $checkbox.prop( 'checked' ) ) {
						$( '#wc-upgrade-warning' ).click();
					}
				}

				$( '#plugins-select-all, input[value="woocommerce/woocommerce.php"]' ).on( 'change', function() {
					show_modal_if_checked();
				} );

				// Add a hidden thickbox link to use for bringing up the modal.
				$('body').append( '<a href="#TB_inline?height=600&width=550&inlineId=wc_untested_extensions_modal" class="wc-thickbox" id="wc-upgrade-warning" style="display:none"></a>' );

				// Don't show the modal again once it's been accepted.
				$( '#wc_untested_extensions_modal .accept' ).on( 'click', function( evt ) {
					evt.preventDefault();
					modal_dismissed = true;
					tb_remove();
				});

				// Uncheck the WC update checkbox if the modal is canceled.
				$( '#wc_untested_extensions_modal .cancel' ).on( 'click', function( evt ) {
					evt.preventDefault();
					$( 'input[value="woocommerce/woocommerce.php"]' ).prop( 'checked', false );
					tb_remove();
				});
			})( jQuery );
		</script>
		<?php
		$this->generic_modal_js();
	}