Uncheck the "select all" checkbox when one of the child checkboxes is manually unchecked. props SergeyBiryukov. fixes #20261

git-svn-id: http://core.svn.wordpress.org/trunk@21209 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/js/common.dev.js

@@ -275,6 +275,13 @@ $(document).ready( function() {
 			}
 		}
 		lastClicked = this;
+
+		// toggle "check all" checkboxes
+		var unchecked = $(this).closest('tbody').find(':checkbox').filter(':visible').not(':checked');
+		$(this).closest('table').children('thead, tfoot').find(':checkbox').prop('checked', function() {
+			return ( 0 == unchecked.length );
+		});
+
 		return true;
 	});