Emittable

Kotlin |Java

interface Emittable

androidx.compose.Emittable

Known Direct Subclasses ComponentNode ComponentNode The base type for all nodes from the tree generated from a component hierarchy.

Known Indirect Subclasses DataNode, DrawNode, FocusNode, LayoutNode, PointerInputNode, RepaintBoundaryNode, SemanticsComponentNode DataNode A ComponentNode that stores a value in the emitted hierarchy DrawNode Backing node for the Draw component. FocusNode Backing node that implements focus. LayoutNode Backing node for Layout component. PointerInputNode Backing node for handling pointer events. RepaintBoundaryNode SemanticsComponentNode

The Emittable interface tells Compose that the implementing class represents a primitive node/type in the view hierarchy produced as a result of composition. Conceptually similar to a RenderObject in flutter. The result of composition is an updated tree of Emittables, which Compose will maintain/mutate over time as subsequent reconciliations are calculated.

Summary

Public methods
abstract Unit	emitInsertAt(index: Int, instance: Emittable)
abstract Unit	emitMove(from: Int, to: Int, count: Int)
abstract Unit	emitRemoveAt(index: Int, count: Int)

Public methods

emitInsertAt

abstract fun emitInsertAt(
    index: Int, 
    instance: Emittable
): Unit

emitMove

abstract fun emitMove(
    from: Int, 
    to: Int, 
    count: Int
): Unit

emitRemoveAt

abstract fun emitRemoveAt(
    index: Int, 
    count: Int
): Unit