While re-reading the spec:
http://dev.w3.org/html5/spec/Overview.html#drag-and-drop-processing-model
I seem to understand that "supply data immediately" is the alternative
proposed currently by HTML5. Right?
If yes, then it's clear that most server-implementors will not be able
to offer rich flavours as possible conversion targets since you don't
want to wait on a network load for a drag-start to fire!
Honestly, I find the whole DnD and CnP treatment in HTML5 quite much
ad-hoc. It's welcome to have such an addition but it makes too many
arrangements and still is hard to read.
What I would wish, and I think many many many others is a readable
specification for copy-and-paste that meets large implementations and
maybe later something for drag-and-drop.
paul
> Thanks for the pointers. We now have more words: supply data on
> demand or supply data immediately is the crucial difference.
>
> The on-demand situation means: the application still must live for
> its on-demand flavours to be available.
>
> We're now porting it all to a web-browser: an application is a web-
> page, a document that is. So on-demand copy-and-paste would stop
> being available as soon the document is gone, i.e., as soon as the
> page is changed following a link or a back, right?
>
> I would feel bothered as a user.