com.facebook.litho.widget

Class Spinner

java.lang.Object

com.facebook.litho.ComponentLifecycle

com.facebook.litho.Component

com.facebook.litho.widget.Spinner

All Implemented Interfaces:

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

public final class Spinner
extends Component

A simple spinner (dropdown) component. Derived from the standard Android Spinner

Additionally added logic to flip the caret vertically once menu is shown.

If no optional values are provided the component will look like it's material design counterpart.

See Also:

com.facebook.litho.widget.SpinnerSpec

Required Props

selectedOption

initially selected option for the spinner

Type:

The

options

options available from the dropdown

Type:

The

onItemSelectedListener

listener for dropdown selections

Type:

The

options

Type:

java.util.List

selectedOption

Type:

java.lang.String

Optional Props

selectedTextSize

text size of the selected value

Type:

The

caret

Type:

android.graphics.drawable.Drawable

itemLayout

Type:

int

selectedTextColor

Type:

int

selectedTextSize

Type:

float

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Spinner.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
static Spinner.Builder	create(ComponentContext context)
static Spinner.Builder	create(ComponentContext context, int defStyleAttr, int defStyleRes)
protected void	createInitialState(ComponentContext c)
Object	dispatchOnEvent(EventHandler eventHandler, Object eventState)
static EventHandler	getItemSelectedEventHandler(ComponentContext context)
protected StateContainer	getStateContainer()
protected boolean	hasState()
Spinner	makeShallowCopy()
static EventHandler<ClickEvent>	onClick(ComponentContext c)
protected Component	onCreateLayout(ComponentContext c) Generate a tree of ComponentLayout representing the layout structure of the Component and its sub-components.
protected void	transferState(StateContainer _prevStateContainer, StateContainer _nextStateContainer) Call this to transfer the State annotated values between two Component with the same global scope.
protected static void	updateIsShowingDropDown(ComponentContext c, boolean isShowing)
protected static void	updateIsShowingDropDownAsync(ComponentContext c, boolean isShowing)
protected static void	updateIsShowingDropDownSync(ComponentContext c, boolean isShowing)
protected static void	updateSelection(ComponentContext c, String newSelection)
protected static void	updateSelectionAsync(ComponentContext c, String newSelection)
protected static void	updateSelectionSync(ComponentContext c, String newSelection)

Methods inherited from class com.facebook.litho.Component

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

Methods inherited from class com.facebook.litho.ComponentLifecycle

acceptTriggerEvent, applyPreviousRenderData, callsShouldUpdateOnMount, canMeasure, canPreallocate, createMountContent, dispatchErrorEvent, dispatchErrorEvent, dispatchOnEnteredRange, dispatchOnExitedRange, getEventTrigger, getEventTrigger, getExtraAccessibilityNodeAt, getExtraAccessibilityNodesCount, getMountType, getTreePropsForChildren, hasAttachDetachCallback, hasChildLithoViews, 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, resolve, shouldAlwaysRemeasure, shouldUpdate, shouldUseGlobalPool

Methods inherited from class java.lang.Object

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

Method Detail

getStateContainer

protected StateContainer getStateContainer()

Overrides:

getStateContainer in class Component

makeShallowCopy

public Spinner makeShallowCopy()

Overrides:

makeShallowCopy in class Component

createInitialState

protected void createInitialState(ComponentContext c)

Overrides:

createInitialState in class ComponentLifecycle

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.

getItemSelectedEventHandler

public static EventHandler getItemSelectedEventHandler(ComponentContext context)

onClick

public static EventHandler<ClickEvent> onClick(ComponentContext c)

dispatchOnEvent

public Object dispatchOnEvent(EventHandler eventHandler,
                              Object eventState)

Specified by:

dispatchOnEvent in interface EventDispatcher

Overrides:

dispatchOnEvent in class ComponentLifecycle

hasState

protected boolean hasState()

Overrides:

hasState in class ComponentLifecycle

Returns:

true if the Component is using state, false otherwise.

transferState

protected void transferState(StateContainer _prevStateContainer,
                             StateContainer _nextStateContainer)

Description copied from class: ComponentLifecycle

Call this to transfer the State annotated values between two Component with the same global scope.

Overrides:

transferState in class ComponentLifecycle

updateSelection

protected static void updateSelection(ComponentContext c,
                                      String newSelection)

updateSelectionAsync

protected static void updateSelectionAsync(ComponentContext c,
                                           String newSelection)

updateSelectionSync

protected static void updateSelectionSync(ComponentContext c,
                                          String newSelection)

updateIsShowingDropDown

protected static void updateIsShowingDropDown(ComponentContext c,
                                              boolean isShowing)

updateIsShowingDropDownAsync

protected static void updateIsShowingDropDownAsync(ComponentContext c,
                                                   boolean isShowing)

updateIsShowingDropDownSync

protected static void updateIsShowingDropDownSync(ComponentContext c,
                                                  boolean isShowing)

create

public static Spinner.Builder create(ComponentContext context)

create

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