An example
Subclasses of QTextEdit, QLineEdit and QTreeView all share common
properties, signals and methods. I'd like to write an interface for them.
class AbstractEditor(QWidget):
__metaclass__ = ABCMeta
mysignal = pyqtSignal()
@abstractmethod
def load(self, file):
"""Load `file` into self"""
Then, I'd write each subclass, using this interface
class TextEditor(AbstractEditor, QTextEdit):
"""Implementation here"""
Since QTextEdit is already a subclass of QWidget, it's default
implementation would get called twice, no? And if my interface wasn't
derived from QWidget, or QObject for that matter, I wouldn't be allowed to
use pyqtSignal()?
On 26 October 2013 14:25, Marcus Ottosson <[email protected]> wrote:
> This is more of a general programming question, but I figured it applies
> to Qt programming in particular and I keep encountering it without finding
> any nice enough solution.
>
> I usually write an abstract interface for a set of classes and put
> dependencies on the interface rather than their implementations.
>
> When subclassing QWidget however, how can you make an interface for
> subclasses of an already implemented class? Is multiple inheritance a good
> idea in this scenario?
>
> Currently, I'm writing the interface as a subclass of QWidget, is this a
> good way?
>
> Thanks,
> Marcus
>
>
> --
> *Marcus Ottosson*
> [email protected]
>
--
*Marcus Ottosson*
[email protected]
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