movableContentOf

MovableContentColumnRowSample

@Suppress("unused")
@Sampled
@Composable
fun MovableContentColumnRowSample(content: @Composable () -> Unit, vertical: Boolean) {
    val movableContent = remember(content) { movableContentOf(content) }

    if (vertical) {
        Column { movableContent() }
    } else {
        Row { movableContent() }
    }
}

MovableContentMultiColumnSample

@Suppress("unused")
@Sampled
@Composable
fun MovableContentMultiColumnSample(items: List<Item>) {
    val itemMap = remember { mutableMapOf<Item, @Composable () -> Unit>() }
    val movableItems =
        remember(items) {
            val itemsToRemove = itemMap.keys.toMutableSet()
            val movableItems = items.map { item ->
                itemsToRemove.remove(item)
                itemMap.getOrPut(item) { movableContentOf { ItemView(item) } }
            }
            itemsToRemove.forEach { itemMap.remove(it) }
            movableItems
        }

    val itemsPerColumn = 10
    val columns = items.size / itemsPerColumn + (if (items.size % itemsPerColumn == 0) 0 else 1)
    Row {
        repeat(columns) { column ->
            Column {
                val base = column * itemsPerColumn
                val end = minOf(base + itemsPerColumn, items.size)
                for (index in base until end) {
                    movableItems[index]()
                }
            }
        }
    }
}