Make getItems() null-safe for Kotlin interoperability

Hi,

we are using a ListDelegationAdapter in our Kotlin project and everything is working nicely.

There is only one thing I would love to have and that is a null-safe access to the items variable declared in the AbsDelegationAdapter. Currently Kotlin does not enforce nullability when calling items (or getItems()).

We can build something like this as a superclass for our adapters:

abstract class BridgedListDelegationAdapter<T : List<Any>> : ListDelegationAdapter<T> {

    constructor() : super()

    constructor(delegatesManager: AdapterDelegatesManager<T>) : super(delegatesManager)

    constructor(vararg delegates: AdapterDelegate<T>) : super(*delegates)

    // Java to Kotlin bridge for null-safety
    @Suppress("RedundantOverride")
    override fun getItems(): T? {
        return super.getItems()
    }
}

Apart from being an ugly workaround, it also will only work for accessing items outside of the adapter. In a sub-class, it will still default to the protected T items variable without null-safety.

Is there anything that can be done about that? Or am I missing an obvious solution to that problem? Thank you!

[sockeqwe]

it is released now as 4.3.2

Thanks again for your contribution

[sockeqwe]

Sorry, I almost forgot about it. I’m on vacation right now, I’m back on Wednesday. Will then create a new release!