SimpleLifecycleObserver.kt

class SimpleLifecycleObserver(
    var onCreate: SimpleLifecycleObserver.(LifecycleOwner) -> Unit = {},
    var onStart: SimpleLifecycleObserver.(LifecycleOwner) -> Unit = {},
    var onResume: SimpleLifecycleObserver.(LifecycleOwner) -> Unit = {},
    var onPause: SimpleLifecycleObserver.(LifecycleOwner) -> Unit = {},
    var onStop: SimpleLifecycleObserver.(LifecycleOwner) -> Unit = {},
    var onDestroy: SimpleLifecycleObserver.(LifecycleOwner) -> Unit = {},
) : DefaultLifecycleObserver {
    fun onCreate(onCreate: SimpleLifecycleObserver.(LifecycleOwner) -> Unit) = apply {
        this.onCreate = onCreate
    }
    fun onStart(onStart: SimpleLifecycleObserver.(LifecycleOwner) -> Unit) = apply {
        this.onStart = onStart
    }
    fun onResume(onResume: SimpleLifecycleObserver.(LifecycleOwner) -> Unit) = apply {
        this.onResume = onResume
    }
    fun onPause(onPause: SimpleLifecycleObserver.(LifecycleOwner) -> Unit) = apply {
        this.onPause = onPause
    }
    fun onStop(onStop: SimpleLifecycleObserver.(LifecycleOwner) -> Unit) = apply {
        this.onStop = onStop
    }
    fun onDestroy(onDestroy: SimpleLifecycleObserver.(LifecycleOwner) -> Unit) = apply {
        this.onDestroy = onDestroy
    }

    override fun onCreate(owner: LifecycleOwner) { onCreate.invoke(this, owner) }

    override fun onStart(owner: LifecycleOwner) { onStart.invoke(this, owner) }

    override fun onResume(owner: LifecycleOwner) { onResume.invoke(this, owner) }

    override fun onPause(owner: LifecycleOwner) { onPause.invoke(this, owner) }

    override fun onStop(owner: LifecycleOwner) { onStop.invoke(this, owner) }

    override fun onDestroy(owner: LifecycleOwner) { onDestroy.invoke(this, owner) }

}