Ed Leafe wrote:
> On Nov 16, 2007, at 11:44 AM, Paul McNett wrote:
>
>> The sizer would need to keep track of the non-gui proxy objects, and
>> then when layout() is called it would need to iterate its list of
>> children and actually call the gui object's append() method on the
>> non-gui-child-object's gui-objects.
>
> OK, so that would add a lot of overhead to the workings of sizers,
> but it could work. What about the use of the __get/setattr__ methods
> to pass any interaction with the proxy to the GUI control? I know in
> the past you've expressed strong concern about such "magic" methods;
> in something as complex as a GUI environment, are you confident in
> such an approach? Or do you have an alternate means of implementing
> this proxying?
Here's what I picture, roughly:
class BaseProxy(dObject):
def __init__(self, *args, **kwargs):
super(BaseProxy, self).__init__(*args, **kwargs)
self._toSet = []
self._proxiedClass = None
self._proxiedObj = None
def _proxyGet(self, attr):
if self._proxiedObj:
return getattr(self._proxiedObj, attr)
else:
raise dException.UINotLoadedException
def _proxySet(self, attr, val):
if self._proxiedObj:
setattr(self._proxiedObj, attr, val)
else:
self._toSet.append(attr, val)
def _instantiateProxied(self):
"""Called when this object is instantiated when the
UI is already loaded, or after the UI has been loaded.
"""
parent = self.Parent
if parent:
if not parent._proxiedObj:
raise dException.UINotLoadedException, \
"Parent's proxied object not instantiated"
self._proxiedObj = self._proxiedClass(parent)
class dPanel(BaseProxy):
def __init__(self, *args, **kwargs):
super(dPanel, self).__init__(*args, **kwargs)
self._proxiedClass = wx.Panel
You get the idea.
--
pkm ~ http://paulmcnett.com
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