form-shim-extend2.js in webshims-rails-1.12.5

- old
+ new

@@ -63,11 +63,11 @@
 
 webshims.defineNodeNamesBooleanProperty(['input', 'textarea', 'select'], 'required', {
 	set: function(value){
 		$(this).getShadowFocusElement().attr('aria-required', !!(value)+'');
 	},
-	initAttr: Modernizr.localstorage //only if we have aria-support
+	initAttr: true
 });
 
 webshims.reflectProperties(['input'], ['pattern']);
 
 
@@ -939,12 +939,11 @@
 		createPlaceholder = function(elem){
 			elem = $(elem);
 			return $( hasLabel(elem) ? '<span class="placeholder-text"></span>' : '<label for="'+ elem.prop('id') +'" class="placeholder-text"></label>');
 		},
 		pHolder = (function(){
-			var delReg 	= /\n|\r|\f|\t/g,
-				allowedPlaceholder = {
+			var allowedPlaceholder = {
 					text: 1,
 					search: 1,
 					url: 1,
 					email: 1,
 					password: 1,
@@ -1008,23 +1007,42 @@
 						});
 						$.each(['Left', 'Top'], function(i, side){
 							var size = (parseInt($.css(elem, 'padding'+ side), 10) || 0) + Math.max((parseInt($.css(elem, 'margin'+ side), 10) || 0), 0) + (parseInt($.css(elem, 'border'+ side +'Width'), 10) || 0);
 							data.text.css('padding'+ side, size);
 						});
-						
+
 						$(elem)
-							.onWSOff('updateshadowdom', function(){
-								var height, width; 
-								if((width = elem.offsetWidth) || (height = elem.offsetHeight)){
-									data.text
-										.css({
-											width: width,
-											height: height
-										})
-										.css($(elem).position())
-									;
-								}
-							}, true)
+							.onWSOff('updateshadowdom', (function(){
+								var lastWidth, init, timer;
+								var jelm = $(elem);
+								var lastPos = {};
+								return function(){
+									var width, fn;
+
+									if((width = elem.offsetWidth)){
+
+										fn = function(){
+											var pos = jelm.position();
+											if(width !== lastWidth){
+												lastWidth = width;
+												data.text[0].style.width = width +'px';
+											}
+											if(pos.top !== lastPos.top || pos.left !== lastPos.left){
+												lastPos = pos;
+												data.text[0].style.top = pos.top +'px';
+												data.text[0].style.left = pos.left +'px';
+											}
+										};
+										if(!init){
+											fn();
+											init = true;
+										} else {
+											clearTimeout(timer);
+											timer = setTimeout(fn, 99);
+										}
+									}
+								};
+							})(), true)
 						;
 						
 					} else {
 						var reset = function(e){
 							if($(elem).hasClass('placeholder-visible')){