com.facebook.litho

Class ComponentKeyUtils

java.lang.Object

com.facebook.litho.ComponentKeyUtils

public class ComponentKeyUtils
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
ComponentKeyUtils()

Method Summary

Modifier and Type	Method and Description
static java.lang.String	generateGlobalKey(ComponentContext parentContext, Component parentComponent, Component childComponent) Generate a global key for the given component that is unique among all of this component's children of the same type.
static java.lang.String	getKeyForChildPosition(java.lang.String currentKey, int index)
static java.lang.String	getKeyWithSeparator(java.lang.Object... keyParts)
static java.lang.String	getKeyWithSeparator(java.lang.String parentGlobalKey, java.lang.String key)
static java.lang.String	getKeyWithSeparatorForTest(java.lang.Object... keyParts)
static java.lang.String	mapToSimpleName(java.lang.String key, java.util.Map<java.lang.Object,java.lang.Integer> typeToIdMap)

Methods inherited from class java.lang.Object

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

Constructor Detail

ComponentKeyUtils

public ComponentKeyUtils()

Method Detail

getKeyWithSeparator

public static java.lang.String getKeyWithSeparator(java.lang.Object... keyParts)

Parameters:

keyParts - a list of objects that will be concatenated to form another component's key

Returns:

a key formed by concatenating the key parts delimited by a separator.

getKeyWithSeparator

public static java.lang.String getKeyWithSeparator(java.lang.String parentGlobalKey,
                                                   java.lang.String key)

getKeyForChildPosition

public static java.lang.String getKeyForChildPosition(java.lang.String currentKey,
                                                      int index)

generateGlobalKey

public static java.lang.String generateGlobalKey(ComponentContext parentContext,
                                                 Component parentComponent,
                                                 Component childComponent)

Generate a global key for the given component that is unique among all of this component's children of the same type. If a manual key has been set on the child component using the .key() method, return the manual key.

TODO: (T38237241) remove the usage of the key handler post the nested tree experiment

Parameters:

parentComponent - parent component within the layout context

childComponent - child component with the parent context

Returns:

a unique global key for this component relative to its siblings.

getKeyWithSeparatorForTest

public static java.lang.String getKeyWithSeparatorForTest(java.lang.Object... keyParts)

mapToSimpleName

public static java.lang.String mapToSimpleName(java.lang.String key,
                                               java.util.Map<java.lang.Object,java.lang.Integer> typeToIdMap)