[Spice-devel] [PATCH] vd_agent: add protocol messages for clipboard/selection-owner model

[Alexander Larsson]

On Tue, 2010-09-21 at 09:31 +0200, Arnon Gilboa wrote:
> pasting clipboard data is now "only-by-demand" from both sides (client and agent), whose behavior is symmetric.
> 
> -VD_AGENT_CLIPBOARD_GRAB(type) - tell the other side that an application in our side ("we") got ownership of the clipboard.
> -VD_AGENT_CLIPBOARD_REQUEST(type) - after we know the other side owns the clipboard (GRAB received), we notify the os we are the owner. when we are asked by the os/app for the clipboard data, we send this REQUEST msg to the other side.
> -VD_AGENT_CLIPBOARD(type, data) - the existing message for sending the clipboard, is now sent only in response to REQUEST.
> -VD_AGENT_CLIPBOARD_RELEASE - tell the other side that we are no longer the owner of the clipboard (e.g. the owner app was closed).
> 
> this patch will be followed by agent & client patches handling the above messages.
> ---

One possible issue i see with this is that this only allows us to
specify one type for the clipboard context. Whereas in both win32 and X
you can claim several formats and then the consumer side can pick which
one to use (i.e. a web browser would support copy as html or copy as
text, etc).

I'm not sure we want to really support this, as it increases the
complexity of cut and paste quite a bit, and is perhaps not as important
as just getting text cut and paste working.

-- 
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 Alexander Larsson                                            Red Hat, Inc 
       alexl at redhat.com            alexander.larsson at gmail.com 
He's a suicidal coffee-fuelled gangster on the run. She's a high-kicking 
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