[Rails-spinoffs] onHover: can u explain me this function ?

Varun Mehta Mon, 06 Feb 2006 22:57:43 -0800

In Sortables, we have a function onHover:

onHover: function(element, dropon, overlap) {

if(overlap>0.5) {

Sortable.mark(dropon, 'before');

if(dropon.previousSibling != element) {

var oldParentNode = element.parentNode;

element.style.visibility = "hidden"; // fix gecko rendering

dropon.parentNode.insertBefore(element, dropon);

if(dropon.parentNode!=oldParentNode)

Sortable.options(oldParentNode).onChange(element);

Sortable.options(dropon.parentNode).onChange(element);

}

} else {

Sortable.mark(dropon, 'after');

var nextElement = dropon.nextSibling || null;

if(nextElement != element) {

var oldParentNode = element.parentNode;

element.style.visibility = "hidden"; // fix gecko rendering

dropon.parentNode.insertBefore(element, nextElement);

if(dropon.parentNode!=oldParentNode)

Sortable.options(oldParentNode).onChange(element);

Sortable.options(dropon.parentNode).onChange(element);

}

I was not able to understand what go these lines of code do? Cos onChange is

onChange: Prototype.emptyFunction,

And the emptyFunction is

emptyFunction: function() {},

So I’m kinda lost, can anyone help me understand the same? Thanks in advance

Regards
Varun Mehta

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imagination is more important than knowledge – albert einstein
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[Rails-spinoffs] onHover: can u explain me this function ?

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