[whatwg] Drag and drop in HTML5
dean at edwards.name
Wed May 4 16:12:40 PDT 2005
Ian Hickson wrote:
> I am currently working on trying to specify IE's (and now Safari's) drag
> and drop API.
> However, from an HTML point of view, it doesn't make sense. Having a style
> property control application behaviour is wrong -- the fact that something
> is draggable isn't going to change depending on what the skin is. It's not
> even going to change based on the media -- something that's draggable (via
> a mouse) on a visual UA is still going to be draggable when the user is
> using an interactive aural agent (albeit with a radically different
> interaction model probably involving explicitly picking two elements and
> saying that the first is to be dragged to the second).
> So there is currently no whole-element drag-and-drop API that we can
> conveniently re-use.
Controlling behavior through CSS is OK if the what you are changing is CSS.
It seems there two kinds of drag/drop. One kind affects the DOM, e.g.
changing the order of items in a list. The other kind affects CSS, e.g.
dragging a window on screen. For a draggable window only the CSS "left"
and "top" positions would be a affected. It would be difficult to
specify this without CSS!
Ideally, i'd like to do both. Use CSS to declare a draggable element and
use HTML to declare a list that can be re-ordered.
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