com.facebook.litho

Class LithoLayoutResult

java.lang.Object

com.facebook.litho.LithoLayoutResult

All Implemented Interfaces:

ComponentLayout, LayoutResult

Direct Known Subclasses:

NestedTreeHolderResult

public class LithoLayoutResult
extends java.lang.Object
implements ComponentLayout, LayoutResult

This is the default implementation of a LayoutResult for Litho. This holds a reference to the LithoNode which created it, its YogaNode, and a list of its children.

Field Summary

Fields

Modifier and Type	Field and Description
protected LithoNode	mNode

Constructor Summary

Constructors

Constructor and Description
LithoLayoutResult(ComponentContext c, LithoNode node, YogaNode yogaNode, LithoLayoutResult parent)

Method Summary

Modifier and Type	Method and Description
void	addChild(LithoLayoutResult child)
boolean	areCachedMeasuresValid()
Drawable	getBackground()
LithoRenderUnit	getBackgroundRenderUnit(LayoutState layoutState)
LithoRenderUnit	getBorderRenderUnit(LayoutState layoutState)
LithoLayoutResult	getChildAt(int i)
int	getChildCount()
int	getChildrenCount()
LithoRenderUnit	getContentRenderUnit(LayoutState layoutState)
ComponentContext	getContext()
DiffNode	getDiffNode()
LithoRenderUnit	getForegroundRenderUnit(LayoutState layoutState)
int	getHeight()
int	getHeightSpec()
LithoRenderUnit	getHostRenderUnit(LayoutState layoutState, boolean isRoot)
int	getLastHeightSpec()
float	getLastMeasuredHeight() The last value the measure funcion associated with this node Component returned for the height.
float	getLastMeasuredWidth() The last value the measure funcion associated with this node Component returned for the width.
int	getLastWidthSpec()
int	getLayoutBorder(YogaEdge edge)
static RenderState.LayoutContext	getLayoutContextFromYogaNode(YogaNode yogaNode)
java.lang.Object	getLayoutData()
static LithoLayoutResult	getLayoutResultFromYogaNode(YogaNode yogaNode)
LithoNode	getNode()
int	getPaddingBottom()
int	getPaddingLeft()
int	getPaddingRight()
int	getPaddingTop()
LithoLayoutResult	getParent()
LithoRenderUnit	getRenderUnit()
YogaDirection	getResolvedLayoutDirection()
int	getTouchExpansionBottom()
int	getTouchExpansionLeft()
int	getTouchExpansionRight()
int	getTouchExpansionTop()
int	getWidth()
int	getWidthSpec()
int	getX()
int	getXForChildAtIndex(int index)
int	getY()
int	getYForChildAtIndex(int index)
YogaNode	getYogaNode()
boolean	isPaddingSet()
protected MeasureResult	measureInternal(RenderState.LayoutContext<LithoRenderContext> context, int widthSpec, int heightSpec)
YogaDirection	recursivelyResolveLayoutDirection()
void	setCachedMeasuresValid(boolean isValid)
void	setDiffNode(DiffNode diffNode)
void	setLastHeightSpec(int heightSpec)
void	setLastMeasuredHeight(float lastMeasuredHeight) Sets the last value the measure funcion associated with this node Component returned for the height.
void	setLastMeasuredWidth(float lastMeasuredWidth) Sets the last value the measure funcion associated with this node Component returned for the width.
void	setLastWidthSpec(int widthSpec)
void	setLayoutData(java.lang.Object layoutData)
void	setParent(LithoLayoutResult parent)
boolean	shouldDrawBorders()
static boolean	willMountView(LithoLayoutResult result) This utility method checks if the will mount a View.

Methods inherited from class java.lang.Object

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

Field Detail

mNode

protected final LithoNode mNode

Constructor Detail

LithoLayoutResult

public LithoLayoutResult(ComponentContext c,
                         LithoNode node,
                         YogaNode yogaNode,
                         LithoLayoutResult parent)

Method Detail

getContext

public ComponentContext getContext()

getX

public int getX()

Specified by:

getX in interface ComponentLayout

getY

public int getY()

Specified by:

getY in interface ComponentLayout

getWidth

public int getWidth()

Specified by:

getWidth in interface ComponentLayout

Specified by:

getWidth in interface LayoutResult

Returns:

the resolved width for the Node

getHeight

public int getHeight()

Specified by:

getHeight in interface ComponentLayout

Specified by:

getHeight in interface LayoutResult

Returns:

the resolved height for the Node

getPaddingTop

public int getPaddingTop()

Specified by:

getPaddingTop in interface ComponentLayout

Specified by:

getPaddingTop in interface LayoutResult

Returns:

the resolved top padding for the Node

getPaddingRight

public int getPaddingRight()

Specified by:

getPaddingRight in interface ComponentLayout

Specified by:

getPaddingRight in interface LayoutResult

Returns:

the resolved right padding for the Node

getPaddingBottom

public int getPaddingBottom()

Specified by:

getPaddingBottom in interface ComponentLayout

Specified by:

getPaddingBottom in interface LayoutResult

Returns:

the resolved bottom padding for the Node

getPaddingLeft

public int getPaddingLeft()

Specified by:

getPaddingLeft in interface ComponentLayout

Specified by:

getPaddingLeft in interface LayoutResult

Returns:

the resolved left padding for the Node

getWidthSpec

public int getWidthSpec()

Specified by:

getWidthSpec in interface LayoutResult

Returns:

the width measurement that generated this LayoutResult

getHeightSpec

public int getHeightSpec()

Specified by:

getHeightSpec in interface LayoutResult

Returns:

the height measurement that generated this LayoutResult

isPaddingSet

public boolean isPaddingSet()

Specified by:

isPaddingSet in interface ComponentLayout

getBackground

public Drawable getBackground()

Specified by:

getBackground in interface ComponentLayout

getResolvedLayoutDirection

public YogaDirection getResolvedLayoutDirection()

Specified by:

getResolvedLayoutDirection in interface ComponentLayout

getNode

public LithoNode getNode()

shouldDrawBorders

public boolean shouldDrawBorders()

getLayoutBorder

public int getLayoutBorder(YogaEdge edge)

getTouchExpansionBottom

public int getTouchExpansionBottom()

getTouchExpansionLeft

public int getTouchExpansionLeft()

getTouchExpansionRight

public int getTouchExpansionRight()

getTouchExpansionTop

public int getTouchExpansionTop()

getLastHeightSpec

public int getLastHeightSpec()

setLastHeightSpec

public void setLastHeightSpec(int heightSpec)

getLastMeasuredHeight

public float getLastMeasuredHeight()

The last value the measure funcion associated with this node Component returned for the height. This is used together with getLastHeightSpec() to implement measure caching.

setLastMeasuredHeight

public void setLastMeasuredHeight(float lastMeasuredHeight)

Sets the last value the measure funcion associated with this node Component returned for the height.

getLastMeasuredWidth

public float getLastMeasuredWidth()

The last value the measure funcion associated with this node Component returned for the width. This is used together with getLastWidthSpec() to implement measure caching.

setLastMeasuredWidth

public void setLastMeasuredWidth(float lastMeasuredWidth)

Sets the last value the measure funcion associated with this node Component returned for the width.

setDiffNode

public void setDiffNode(DiffNode diffNode)

setCachedMeasuresValid

public void setCachedMeasuresValid(boolean isValid)

getLastWidthSpec

public int getLastWidthSpec()

areCachedMeasuresValid

public boolean areCachedMeasuresValid()

getDiffNode

public DiffNode getDiffNode()

setLastWidthSpec

public void setLastWidthSpec(int widthSpec)

recursivelyResolveLayoutDirection

public YogaDirection recursivelyResolveLayoutDirection()

getRenderUnit

public LithoRenderUnit getRenderUnit()

Specified by:

getRenderUnit in interface LayoutResult

Returns:

the RenderUnit that should be rendered by this layout result.

getContentRenderUnit

public LithoRenderUnit getContentRenderUnit(LayoutState layoutState)

getHostRenderUnit

public LithoRenderUnit getHostRenderUnit(LayoutState layoutState,
                                         boolean isRoot)

getBackgroundRenderUnit

public LithoRenderUnit getBackgroundRenderUnit(LayoutState layoutState)

getForegroundRenderUnit

public LithoRenderUnit getForegroundRenderUnit(LayoutState layoutState)

getBorderRenderUnit

public LithoRenderUnit getBorderRenderUnit(LayoutState layoutState)

getLayoutData

public java.lang.Object getLayoutData()

Specified by:

getLayoutData in interface LayoutResult

Returns:

layout specific data that was generated during the layout pass that created this LayoutResult.

setLayoutData

public void setLayoutData(java.lang.Object layoutData)

getChildrenCount

public int getChildrenCount()

Specified by:

getChildrenCount in interface LayoutResult

Returns:

the number of children of this LayoutResult.

getChildAt

public LithoLayoutResult getChildAt(int i)

Specified by:

getChildAt in interface LayoutResult

Returns:

the LayoutResult for the given child index

getXForChildAtIndex

public int getXForChildAtIndex(int index)

Specified by:

getXForChildAtIndex in interface LayoutResult

Returns:

the resolved X position for the Node

getYForChildAtIndex

public int getYForChildAtIndex(int index)

Specified by:

getYForChildAtIndex in interface LayoutResult

Returns:

the resolved Y position for the Node

addChild

public void addChild(LithoLayoutResult child)

getChildCount

public int getChildCount()

getParent

public LithoLayoutResult getParent()

setParent

public void setParent(LithoLayoutResult parent)

getYogaNode

public YogaNode getYogaNode()

getLayoutContextFromYogaNode

public static RenderState.LayoutContext getLayoutContextFromYogaNode(YogaNode yogaNode)

getLayoutResultFromYogaNode

public static LithoLayoutResult getLayoutResultFromYogaNode(YogaNode yogaNode)

measureInternal

protected MeasureResult measureInternal(RenderState.LayoutContext<LithoRenderContext> context,
                                        int widthSpec,
                                        int heightSpec)

willMountView

public static boolean willMountView(LithoLayoutResult result)

This utility method checks if the will mount a View. It returns true if and only if the will mount a View. If it returns false then the result will either mount a Drawable or it is NestedTreeHolderResult, which will not mount anything.

Returns:

true iff the result will mount a view.