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

[David Temkin]

Max, Henry,

Can this be solved using the existing mechanism of a custom  
dataprovider, which could implement a proxy policy? That was one  
intention of the dataprovider API.

Better to do this in one place, as opposed to adding a new API for this.

- D.


On May 28, 2008, at 4:43 PM, Max Carlson wrote:

> Sounds good to me!  By the way, I filed a bug to track the proxy  
> policy API change: http://jira.openlaszlo.org/jira/browse/LPP-6058
>
> Can you file one for doing the same with the proxyhost attribute?   
> Thanks!
>
> Henry Minsky wrote:
>> A related issue, it would be nice to be able to specify the URL of  
>> the proxy host, instead of it being
>> hardcoded to be the app url. How about a proxyhost attribute that  
>> you can set in a similar manner?
>> On Wed, May 28, 2008 at 3:00 PM, Max Carlson <max at openlaszlo.org <mailto:max at openlaszlo.org 
>> >> wrote:
>>    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
>> -- 
>> Henry Minsky
>> Software Architect
>> hminsky at laszlosystems.com <mailto:hminsky at laszlosystems.com>
>
> -- 
> Regards,
> Max Carlson
> OpenLaszlo.org