SubcomposeLayoutState.PrecomposedSlotHandle

Instance of this interface is returned by precompose function.

Summary

Public functions
Unit

This function allows to dispose the content for the slot which was precomposed previously via precompose.
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open Unit
premeasure(index: Int, constraints: Constraints)

Performs synchronous measure of the placeable at the given index.
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open Unit

Conditionally executes block for each Modifier.Node of this Composition that is a TraversableNode with a matching key.
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Public properties
open Int

The amount of placeables composed into this slot.
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Public functions

dispose

Cmn
Added in 1.0.0
fun dispose(): Unit

This function allows to dispose the content for the slot which was precomposed previously via precompose.

If this slot was already used during the regular measure pass via SubcomposeMeasureScope.subcompose this function will do nothing.

This could be useful if after the future calculations this item is not anymore expected to be used during the measure pass anytime soon.

premeasure

Cmn 
open fun premeasure(index: Int, constraints: Constraints): Unit

Performs synchronous measure of the placeable at the given index.

Parameters
index: Int

the placeable index. Should be smaller than placeablesCount.
constraints: Constraints

Constraints to measure this placeable with.

traverseDescendants

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open fun traverseDescendants(
    key: Any?,
    block: (TraversableNode) -> TraversableNode.Companion.TraverseDescendantsAction
): Unit

Conditionally executes block for each Modifier.Node of this Composition that is a TraversableNode with a matching key.

See androidx.compose.ui.node.traverseDescendants for the complete semantics of this function.

Public properties

placeablesCount

Cmn
Added in 1.2.0
open val placeablesCount: Int

The amount of placeables composed into this slot.