Adding extra field to abstract class

#1

In the TerminalWidget abstract class, i want to add one more field “abstract xyz”.
So I’ve done something like this:

export abstract class CustomTerminalWidget extends TerminalWidget {
    abstract xyz: number | undefined;
}

Now, how do i bind CustomTerminalWidget, or is there any better way to do so?

#2

Hi @vivek9patel,

to extend the actual terminal widget, You’ll want to extend the TerminalWidgetImpl and then rebind as following:

rebind(TerminalWidget).to(CustomTerminalWidgetImpl).inTransientScope();

Like in every object oriented language, you can’t really change the inheritance chain of existing classes, so you need to add your own on top of the existing chain.

#3

Yes, i’ve done the same thing, but in terminalService.onDidChangeCurrentTerminal((e: TerminalWidget) => {}) event, i want to add one more extra field e.xyz.

#4

Since every implementation of TerminalWidget will be of type CustomTerminalWidgetImpl, you can simply do this:

terminalService.onDidChangeCurrentTerminal((e: CustomTerminalWidgetImpl) => {})