com.facebook.litho.widget

Class LithoScrollView

java.lang.Object

NestedScrollView

com.facebook.litho.widget.LithoScrollView

All Implemented Interfaces:

HasLithoViewChildren

public class LithoScrollView
extends NestedScrollView
implements HasLithoViewChildren

Extension of NestedScrollView that allows to add more features needed for @VerticalScrollSpec.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	LithoScrollView.OnInterceptTouchListener
static class	LithoScrollView.ScrollPosition

Constructor Summary

Constructors

Constructor and Description
LithoScrollView(Context context)
LithoScrollView(Context context, AttributeSet attrs)
LithoScrollView(Context context, AttributeSet attrs, int defStyleAttr)

Method Summary

Modifier and Type	Method and Description
boolean	dispatchNestedFling(float velocityX, float velocityY, boolean consumed) NestedScrollView does not automatically consume the fling event.
void	draw(Canvas canvas)
void	fling(int velocityX)
void	mount(ComponentTree contentComponentTree, LithoScrollView.ScrollPosition scrollPosition, ScrollStateListener scrollStateListener)
void	obtainLithoViewChildren(java.util.List<LithoView> lithoViews)
boolean	onInterceptTouchEvent(MotionEvent ev)
protected void	onScrollChanged(int l, int t, int oldl, int oldt)
boolean	onTouchEvent(MotionEvent motionEvent)
void	setOnInterceptTouchListener(LithoScrollView.OnInterceptTouchListener onInterceptTouchListener)
void	unmount()

Methods inherited from class java.lang.Object

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

Constructor Detail

LithoScrollView

public LithoScrollView(Context context)

LithoScrollView

public LithoScrollView(Context context,
                       AttributeSet attrs)

LithoScrollView

public LithoScrollView(Context context,
                       AttributeSet attrs,
                       int defStyleAttr)

Method Detail

onInterceptTouchEvent

public boolean onInterceptTouchEvent(MotionEvent ev)

fling

public void fling(int velocityX)

draw

public void draw(Canvas canvas)

onScrollChanged

protected void onScrollChanged(int l,
                               int t,
                               int oldl,
                               int oldt)

onTouchEvent

public boolean onTouchEvent(MotionEvent motionEvent)

dispatchNestedFling

public boolean dispatchNestedFling(float velocityX,
                                   float velocityY,
                                   boolean consumed)

NestedScrollView does not automatically consume the fling event. However, RecyclerView consumes this event if it's either vertically or horizontally scrolling. RecyclerView#fling Since this view is specifically made for vertically scrolling components, we always consume the nested fling event just like recycler view.

setOnInterceptTouchListener

public void setOnInterceptTouchListener(LithoScrollView.OnInterceptTouchListener onInterceptTouchListener)

obtainLithoViewChildren

public void obtainLithoViewChildren(java.util.List<LithoView> lithoViews)

Specified by:

obtainLithoViewChildren in interface HasLithoViewChildren

mount

public void mount(ComponentTree contentComponentTree,
                  LithoScrollView.ScrollPosition scrollPosition,
                  ScrollStateListener scrollStateListener)

unmount

public void unmount()