Re: abstract layer question

Robin Becker <[email protected]>:
>         def _set_range(self,range):
>                 assert range[0]<range[1], "reversed or zero range"
>                 self._range = range
>                 self.pos = range[0]
> 
> in the backend I used _ensure_pos to transmit the value to the
> underlying widget.
> 
> How should I achieve the same kind of thing in 0.2.

This sort of thing is still handled by the Attrib class (which has
been rewritten quite a bit). If there is a setter method available (as
defined by anygui.Utils.getSetter) then that will be called instead of
the generic set(). set() is basically a rawSet() (which updates
self.state) followed by a push() (which pushes thing through to the
wrapper).

So... To make a long story short, what you have to do is simply:

  def setRange(self, range):
      assert range[0]<range[1], "reversed or zero range"
      self.set(range=range)

You could also manipulate self.state directly and call
self.push('state') but there's really no point.

So, basically the abstract layer is still here -- it just looks better
(IMO) <wink>.

(Note that I haven't tested this code, and am very tired, so I may not
be making sense at all -- but I think I am. This is how I think it
*should* work, anyway ;)

BTW: getSetter should probably be rewritten since we're not using the
setFooAndBarAndBaz syntax after all... :)

-- 
Magnus Lie Hetland                                  The Anygui Project
http://hetland.org                                  http://anygui.org


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