com.facebook.litho

Class RenderUnitIdGenerator

java.lang.Object

com.facebook.litho.RenderUnitIdGenerator

public class RenderUnitIdGenerator
extends java.lang.Object

Class that handles generation of unique IDs for RenderUnits for a given ComponentTree. The ID generation uses the component key to create an ID, and creates unique IDs for any components under the same ComponentTree.

Constructor Summary

Constructors

Constructor and Description
RenderUnitIdGenerator(int componentTreeId)

Method Summary

Modifier and Type	Method and Description
long	calculateLayoutOutputId(java.lang.String componentKey, int type) Calculates a returns a unique ID for a given component key and output type.
int	getComponentTreeId() Returns the ComponentTree ID that this ID-generator is linked with.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RenderUnitIdGenerator

public RenderUnitIdGenerator(int componentTreeId)

Method Detail

getComponentTreeId

public int getComponentTreeId()

Returns the ComponentTree ID that this ID-generator is linked with.

calculateLayoutOutputId

public long calculateLayoutOutputId(java.lang.String componentKey,
                                    int type)

Calculates a returns a unique ID for a given component key and output type. The IDs will be unique for components in the ComponentTree this ID generator is linked with. If an ID was already generated for a given component, the same ID will be returned. Otherwise, a new unique ID will be generated

Parameters:

componentKey - The component key

type - The output type @see OutputUnitType