How to correctly change the application tray icon?

Question

Python

There is a class that generates a tray icon, inherited from QSystemTrayIcon. An object of this class is created in Main, we get a tray icon, everything is ok. But when you need to change the image by changing the state in objects of other classes, you have to pass an icon object to them in order to change them there. And when there are many such classes, then there is a strong connection and everywhere you have to pass this object. How to more competently implement changing the tray icon on events inside other classes?

Answer 1

You can use the "Observer" pattern: https://refactoring.guru/en/design-patterns/observ...