SubspaceModifierNodeElement

abstract class SubspaceModifierNodeElement<N : SubspaceModifier.Node> : SubspaceModifier

Modifier elements manage an instance of a particular SubspaceModifier.Node implementation. A given SubspaceModifier.Node implementation can only be used when a SubspaceModifierNodeElement, which creates and updates that implementation, is applied to a layout.

A SubspaceModifierNodeElement should be very lightweight, and do little more than hold the information necessary to create and maintain an instance of the associated SubspaceModifier.Node type.

Parameters
`<N : SubspaceModifier.Node>`	The type of node that this element creates and updates.

Summary

Public constructors
`<N : SubspaceModifier.Node> SubspaceModifierNodeElement()`

Public functions
`abstract N`	`create()` This will be called the first time the modifier is applied to the layout and it should construct and return the corresponding `SubspaceModifier.Node` instance.
`abstract operator Boolean`	`equals(other: Any?)` Require equals() to be implemented.
`abstract Int`	`hashCode()` Require hashCode() to be implemented.
`abstract Unit`	`update(node: N)` Called when a modifier is applied to a layout whose inputs have changed from the previous application.

Inherited functions

From androidx.xr.compose.subspace.layout.SubspaceModifier

`open Boolean`	`all( predicate: (SubspaceModifierNodeElement<SubspaceModifier.Node>) -> Boolean )` Returns `true` if `predicate` returns true for all `SubspaceModifierNodeElement`s in this `SubspaceModifier` or if this `SubspaceModifier` contains no Elements.
`open Boolean`	`any( predicate: (SubspaceModifierNodeElement<SubspaceModifier.Node>) -> Boolean )` Returns `true` if `predicate` returns true for any `SubspaceModifierNodeElement` in this `SubspaceModifier`.
`open R`	`<R : Any?> foldIn( initial: R, operation: (SubspaceModifierNodeElement<SubspaceModifier.Node>, R) -> R )` Accumulates a value starting with `initial` and applying `operation` to the current value and each `SubspaceModifierNodeElement` from outside in.
`open R`	`<R : Any?> foldOut( initial: R, operation: (SubspaceModifierNodeElement<SubspaceModifier.Node>, R) -> R )` Accumulates a value starting with `initial` and applying `operation` to the current value and each `SubspaceModifierNodeElement` from inside out.
`open infix SubspaceModifier`	`then(other: SubspaceModifier)` Concatenates this modifier with another.

Public constructors

SubspaceModifierNodeElement

<N : SubspaceModifier.Node> SubspaceModifierNodeElement()

Parameters
`<N : SubspaceModifier.Node>`	The type of node that this element creates and updates.

Public functions

create

Added in 1.0.0-alpha04

abstract fun create(): N

This will be called the first time the modifier is applied to the layout and it should construct and return the corresponding SubspaceModifier.Node instance.

equals

Added in 1.0.0-alpha04

abstract operator fun equals(other: Any?): Boolean

Require equals() to be implemented. Using a data class is sufficient. Singletons may implement this function with referential equality (this === other). Modifiers with no inputs may implement this function by checking the type of the other object.

hashCode

Added in 1.0.0-alpha04

abstract fun hashCode(): Int

Require hashCode() to be implemented. Using a data class is sufficient. Singletons and modifiers with no parameters may implement this function by returning an arbitrary constant.

update

Added in 1.0.0-alpha04

abstract fun update(node: N): Unit

Called when a modifier is applied to a layout whose inputs have changed from the previous application. This function will have the current node instance passed in as a parameter, and it is expected that the node will be brought up to date.