TaskPriority auto screen close suspension

[GregHib]

55

A suspension much like waiting for an open widget to close #56 but instead only if there is a screen open:

• waits for any open screen to close
• get the current open screen and uses wait-for-widget suspension #56.

Ideally, this will be injected into the beginning of the Queue on the initiation of QueueTask depending on the (immutable) QueuePriority.

POC

fun hack(queue: Queue) = queue

data class QueueTask private constructor(val priority: QueuePriority, val queue: Queue) {
    constructor(queue: Queue, priority: QueuePriority) : this(priority, if (priority == QueuePriority.Normal) hack {
        waitForScreen()//TODO
        queue()
    } else queue)
}