[Laszlo-user] API change proposal: LzView.add/removeProxyPolicy()

[Max Carlson]

Hi Folks,

I was thinking of deprecating the LzView.add/removeProxyPolicy() APIs in 
favor of a new, simpler system.  The current API looks like this:

LzView.addProxyPolicy ( f )
Adds a function which can decide how the media at a given URL should be 
loaded
@param Function f: A function that takes a URL as a string and returns 
one of true, false, or null meaning respectively that the request should 
be proxied by the LPS server; made directly to the URL; or should be 
passed to the next policy function in the list. The default policy 
function returns the value of canvas.proxied

LzView.removeProxyPolicy ( f )
Removes a proxy policy function that has been added using 
LzView.addProxyPolicy
@param Function f: The function to remove from the policy list
@return Boolean: Returns true if the function was found and removed, false
if not

Instead, each view would be able to set its own proxy policy.  If a view 
does not have an explicit proxy policy set, it looks up the parent chain 
until it finds one.  The canvas always has a default proxy policy set. 
Views can change their proxy policy like this:

anyview.setProxyPolicy ( f )
Sets a proxy policy function on a per-view basis.
@param Function f: The function to use for this view's proxy policy

Let me know what you think!

-- 
Regards,
Max Carlson
OpenLaszlo.org