dojo_app/js/library/dijit/form/_FormValueWidget.js

define([
	"dojo/_base/declare", // declare
	"dojo/sniff", // has("ie")
	"./_FormWidget",
	"./_FormValueMixin"
], function(declare, has, _FormWidget, _FormValueMixin){

	// module:
	//		dijit/form/_FormValueWidget

	return declare("dijit.form._FormValueWidget", [_FormWidget, _FormValueMixin], {
		// summary:
		//		Base class for widgets corresponding to native HTML elements such as `<input>` or `<select>`
		//		that have user changeable values.
		// description:
		//		Each _FormValueWidget represents a single input value, and has a (possibly hidden) `<input>` element,
		//		to which it serializes it's input value, so that form submission (either normal submission or via FormBind?)
		//		works as expected.

		// Don't attempt to mixin the 'type', 'name' attributes here programatically -- they must be declared
		// directly in the template as read by the parser in order to function. IE is known to specifically
		// require the 'name' attribute at element creation time.  See #8484, #8660.

		_layoutHackIE7: function(){
			// summary:
			//		Work around table sizing bugs on IE7 by forcing redraw

			if(has("ie") == 7){ // fix IE7 layout bug when the widget is scrolled out of sight
				var domNode = this.domNode;
				var parent = domNode.parentNode;
				var pingNode = domNode.firstChild || domNode; // target node most unlikely to have a custom filter
				var origFilter = pingNode.style.filter; // save custom filter, most likely nothing
				var _this = this;
				while(parent && parent.clientHeight == 0){ // search for parents that haven't rendered yet
					(function ping(){
						var disconnectHandle = _this.connect(parent, "onscroll",
							function(){
								_this.disconnect(disconnectHandle); // only call once
								pingNode.style.filter = (new Date()).getMilliseconds(); // set to anything that's unique
								_this.defer(function(){
									pingNode.style.filter = origFilter;
								}); // restore custom filter, if any
							}
						);
					})();
					parent = parent.parentNode;
				}
			}
		}
	});
});