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List: pykde
Subject: Re: [PyQt] Multiple inheritance with item views
From: Andreas Pakulat <apaku () gmx ! de>
Date: 2010-02-22 21:39:24
Message-ID: 20100222213924.GA3878 () trinity ! apaku ! dnsalias ! org
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On 22.02.10 21:09:28, Jugdish wrote:
> The reason I have BaseView inheriting from QAbstractItemView is because
> inside it I make calls like:
>
> self.setItemDelegate(...)
> self.setDragEnabled(...)
> self.setEditTriggers(...)
>
> and so on. These are all things that are common to both
> MyTreeView/MyTableView, and obviously wouldn't work if BaseView had no base
> class.
Sure they would, thats so nice about python being a dynamically typed
language - as long as self has that function during runtime it'll work.
And during runtime it does have that function because of subclassing
MyTableView from QTableView+BaseView (unless PyQt4 has a restriction).
Take this example:
class Bar:
def my(self):
self.goup()
class Foo:
def goup(self):
print "Hi", self
class FooBar( Foo, Bar ):
def makeit(self):
print "me:", self
self.my()
f = FooBar()
f.makeit()
It'll just work.
> Any ideas of a better way to achieve this without duplicating code between
> the 2 views?
Avoiding code-duplication should only be done with subclassing if the
subclasses "make sense", i.e. if they'd also exist without wanting to
avoid the code-duplication. In other cases the duplicated code should
rather be put into some shared functions or the like.
Andreas
--
Your object is to save the world, while still leading a pleasant life.
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