HTML5 drag and drop in Firefox 3.5 – 0xDECAFBAD
http://decafbad.com/blog/2009/07/15/html5-drag-and-drop

Since it’s so fundamental, offering drag and drop in web applications has been a no-brainer ever since browsers first offered mouse events in DHTML. But, although mousedown, mousemove, and mouseup made it possible, the implementation has been limited to the bounds of the browser window. Additionally, since these events refer only to the object being dragged, there’s a challenge to find the subject of the drop when the interaction is completed.

Drag and drop is one of the most fundamental interactions afforded by graphical user interfaces. In one gesture, it allows users to pair the selection of an object with the execution of an action, often including a second object in the operation. It’s a simple yet powerful UI concept used to support copying, list reordering, deletion (ala the Trash / Recycle Bin), and even the creation of link relationships.

HTML 5 is shaping up to be quite an impressive step up from the capabilities web developers are currently constrained to. One of my favorite new features provided by the spec is support for native drag and drop.

"After spending about a day and a half in testing I am forced to conclude that the HTML5 drag and drop module is not just a disaster, it’s a fucking disaster."

Holy H Christ... WHAT have we done!? We stood idly by and let this drag and drop disaster happen.

Gee, I wonder why that is.