com.facebook.litho

Class Column

java.lang.Object

com.facebook.litho.ComponentLifecycle

com.facebook.litho.Component

com.facebook.litho.Column

All Implemented Interfaces:

Equivalence<Component>, EventDispatcher, EventTriggerTarget, HasEventDispatcher, HasEventTrigger, Cloneable

public final class Column
extends Component

A Component that renders its children in a column.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Column.Builder

Nested classes/interfaces inherited from class com.facebook.litho.Component

Component.ContainerBuilder<T extends Component.ContainerBuilder<T>>

Nested classes/interfaces inherited from class com.facebook.litho.ComponentLifecycle

ComponentLifecycle.MountType, ComponentLifecycle.RenderData, ComponentLifecycle.TransitionContainer

Method Summary

Modifier and Type	Method and Description
protected boolean	canResolve() Indicate that this component implements its own ComponentLifecycle.resolve(ComponentContext) logic instead of going through ComponentLifecycle.createComponentLayout(ComponentContext).
static Column.Builder	create(ComponentContext context)
static Column.Builder	create(ComponentContext context, int defStyleAttr, int defStyleRes)
static Column.Builder	create(ComponentContext context, int defStyleAttr, int defStyleRes, String simpleName)
static Column.Builder	create(ComponentContext context, String simpleName)
boolean	isEquivalentTo(Component other) Compares this component to a different one to check if they are the same
protected Component	onCreateLayout(ComponentContext c) Generate a tree of ComponentLayout representing the layout structure of the Component and its sub-components.
protected ComponentLayout	resolve(ComponentContext c) Resolves the ComponentLayout for the given Component.

Methods inherited from class com.facebook.litho.Component

bindDynamicProp, clearCachedLayout, copyInterStageImpl, getCommonProps, getDynamicProps, getEventDispatcher, getHandle, getId, getKey, getScopedContext, getSimpleName, getSimpleNameDelegate, getStateContainer, hasBackgroundSet, hasClickHandlerSet, makeShallowCopy, measure, measureMightNotCacheInternalNode, recordEventTrigger, registerWorkingRange, retrieveValue, setScopedContext, updateInternalChildState, willRender

Methods inherited from class com.facebook.litho.ComponentLifecycle

acceptTriggerEvent, applyPreviousRenderData, callsShouldUpdateOnMount, canMeasure, canPreallocate, createInitialState, createMountContent, dispatchErrorEvent, dispatchErrorEvent, dispatchOnEnteredRange, dispatchOnEvent, dispatchOnExitedRange, getEventTrigger, getEventTrigger, getExtraAccessibilityNodeAt, getExtraAccessibilityNodesCount, getMountType, getTreePropsForChildren, hasAttachDetachCallback, hasChildLithoViews, hasState, implementsAccessibility, implementsExtraAccessibilityNodes, isLayoutSpecWithSizeSpecCheck, isMountSizeDependent, isPureRender, needsPreviousRenderData, newEventHandler, newEventTrigger, onAttached, onBind, onBoundsDefined, onCreateLayoutWithSizeSpec, onCreateMountContent, onCreateMountContentPool, onCreateTransition, onDetached, onError, onLoadStyle, onMeasure, onMeasureBaseline, onMount, onPopulateAccessibilityNode, onPopulateExtraAccessibilityNode, onPrepare, onShouldCreateLayoutWithNewSizeSpec, onUnbind, onUnmount, poolSize, populateTreeProps, recordRenderData, shouldAlwaysRemeasure, shouldUpdate, shouldUseGlobalPool, transferState

Methods inherited from class java.lang.Object

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

Method Detail

canResolve

protected boolean canResolve()

Description copied from class: Component

Indicate that this component implements its own ComponentLifecycle.resolve(ComponentContext) logic instead of going through ComponentLifecycle.createComponentLayout(ComponentContext).

Overrides:

canResolve in class Component

create

public static Column.Builder create(ComponentContext context)

create

public static Column.Builder create(ComponentContext context,
                                    String simpleName)

create

public static Column.Builder create(ComponentContext context,
                                    int defStyleAttr,
                                    int defStyleRes)

create

public static Column.Builder create(ComponentContext context,
                                    int defStyleAttr,
                                    int defStyleRes,
                                    String simpleName)

onCreateLayout

protected Component onCreateLayout(ComponentContext c)

Description copied from class: ComponentLifecycle

Generate a tree of ComponentLayout representing the layout structure of the Component and its sub-components.

Overrides:

onCreateLayout in class ComponentLifecycle

Parameters:

c - The ComponentContext to build a ComponentLayout tree.

resolve

protected ComponentLayout resolve(ComponentContext c)

Description copied from class: ComponentLifecycle

Resolves the ComponentLayout for the given Component.

Overrides:

resolve in class ComponentLifecycle

isEquivalentTo

public boolean isEquivalentTo(Component other)

Description copied from class: Component

Compares this component to a different one to check if they are the same

This is used to be able to skip rendering a component again. We avoid using the Object.equals(Object) so we can optimize the code better over time since we don't have to adhere to the contract required for a equals method.

Specified by:

isEquivalentTo in interface Equivalence<Component>

Overrides:

isEquivalentTo in class Component

Parameters:

other - the component to compare to

Returns:

true if the components are of the same type and have the same props