>From the "Simple tutorial on bizObjects":
> class MainForm(dabo.ui.dForm):
> def afterInit(self):
> """Hierher gehört die UI-Definition
> """
> self.Sizer = vs = dabo.ui.dSizer('v')
> custPanel = CustomerPanel(self)
> vs.append(custPanel, 1, 'x')
> vs.appendSpacer(8)
> hs = dabo.ui.dSizer('h')
> hs.append(dabo.ui.dButton(self, Caption="First", OnHit=self.first),
> 0)
> hs.append(dabo.ui.dButton(self, Caption="Next", OnHit=self.next), 0)
> hs.append(dabo.ui.dButton(self, Caption="Prior", OnHit=self.prior),
0)
> hs.append(dabo.ui.dButton(self, Caption="Last", OnHit=self.last), 0)
> vs.append(hs)
> vs.appendSpacer(8)
> contPanel = ContactsPanel(self)
> vs.append(contPanel, 2, 'x')
> self.layout()
> self.requery()
>
> def first(self, evt):
> self.super()
>
> def next(self, evt):
> self.super()
>
> def prior(self, evt):
> self.super()
>
> def last(self, evt):
> self.super()
>From the discussion about it on the list:
> Author: Ed Leafe <ed AT leafe .DO.T com>
> Subject: Re: [dabo-users] [part 2] a Simple tutorial on bizObjects`
> Posted: 2007/12/31 22:49:40
>
> On Dec 31, 2007, at 8:53 PM, bsnipes wrote:
> > Where can I find info on the super() method? Does this call an a
> > method in
> > a base class?
>
> It's a somewhat magical shortcut Paul cooked up for calling the
> superclass behavior for a method. It's in dabo.lib.autosuper, and is
> one of the mixin classes for dObject. So if your class is Foo, and
> based on dabo.Bar, the following are all equivalent:
>
> def method(self):
> dabo.Bar.method(self)
>
> def method(self):
> super(dabo.Bar, self).method()
>
> def method(self):
> self.super()
>
> I prefer the second form, since it and the last work better with
> subclasses based on multiple inheritance, and the last form is just a
> little too fragile-feeling for me. However, it does seem to work
> well, so it's just a matter of taste.
First a little nit-picking: shouldn't the second form be
"super(Foo, self).method()"?
Second: I know, having tried it, that those method definitions are necessary.
Without them, only with "OnHit=self.first" etc., the buttons won't do
anything. But why? They don't do anything but call the base class methods
with the same name. I thought if a method is called on a class instance and
not found in the class definition it's searched for in the base class(es)
anyway.
What did I overlook?
Thank you,
Sibylle
--
Dr. Sibylle Koczian
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