singleton

_singleton

Singleton metaclass for Qt widgets.

Classes:

Name	Description
FXSingleton	Metaclass for Qt classes that are singletons.

Classes

FXSingleton

FXSingleton(*args, **kwargs)

Bases: type(QObject)

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              fxgui.fxwidgets._singleton.FXSingleton[FXSingleton]

              

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Metaclass for Qt classes that are singletons.

This metaclass ensures that only one instance of each class can exist. If an instance already exists, it returns the existing instance instead of creating a new one. Each subclass gets its own singleton instance.

Examples:

>>> from fxgui import fxwidgets
>>>
>>> class MySingletonWindow(fxwidgets.FXMainWindow, metaclass=fxwidgets.FXSingleton):
...     pass
>>>
>>> window1 = MySingletonWindow()
>>> window2 = MySingletonWindow()
>>> assert window1 is window2  # Same instance

Methods:

Name	Description
reset_instance	Reset the singleton instance. Useful for testing or cleanup.

Functions

reset_instance

reset_instance()

Reset the singleton instance. Useful for testing or cleanup.