IssueTracker

In some cases you might want to delete content from composition but then later insert it potentially in a different location. This seems like the movableContentOf could be used for this but it doesn't work as the content is removed too quickly. Currently you need to do something like,

@Composable
fun PreserveContent(visible: Boolean, content: @Composable () -> Unit) {
    val preservedContent = remember(content as Any) { movableContentOf(content) }
    if (visible)
        preservedContent()
    else {
        Box(modifier = Modifier.size(0.dp).clip(RectangleShape)) {
            preservedContent()
        }
    }
}

or create a custom layout that doesn't place the content temporarily. I would be nice to have something like,

SaveMovableContent {
  movableContent()
}

that could be used instead that could transform the above into,

@Composable
fun PreserveContent(visible: Boolean, content: @Composable () -> Unit) {
    val preservedContent = remember(content as Any) { movableContentOf(content) }
    if (visible)
        preservedContent()
    else {
        SaveMovableContent {
            preservedContent()
        }
    }
}

that could be used to extend the lifetime of the content in the block without requiring it to be in an active tree.