com.facebook.react.views.text

Class ReactTextShadowNode

java.lang.Object

com.facebook.csslayout.CSSNode

com.facebook.react.uimanager.ReactShadowNode

com.facebook.react.uimanager.LayoutShadowNode

com.facebook.react.views.text.ReactTextShadowNode

Direct Known Subclasses:

ReactTextInputShadowNode

public class ReactTextShadowNode
extends LayoutShadowNode

ReactShadowNode class for spannable text view.

This node calculates Spannable based on subnodes of the same type and passes the resulting object down to textview's shadowview and actual native TextView instance. It is important to keep in mind that Spannable is calculated only on layout step, so if there are any text properties that may/should affect the result of Spannable they should be set in a corresponding ReactTextShadowNode. Resulting Spannable object is then then passed as "computedDataFromMeasure" down to shadow and native view.

TODO(7255858): Rename *CSSNode to *ShadowView (or sth similar) as it's no longer is used solely for layouting

Nested Class Summary

Nested classes/interfaces inherited from class com.facebook.csslayout.CSSNode

CSSNode.MeasureFunction

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	mContainsImages
protected int	mFontSize
protected int	mNumberOfLines
static java.lang.String	PROP_TEXT
static int	UNSET

Fields inherited from class com.facebook.csslayout.CSSNode

lineIndex

Constructor Summary

Constructors

Constructor and Description
ReactTextShadowNode(boolean isVirtual)

Method Summary

Methods

Modifier and Type	Method and Description
protected static android.text.Spannable	fromTextCSSNode(ReactTextShadowNode textCSSNode)
boolean	isVirtual() Nodes that return true will be treated as "virtual" nodes.
boolean	isVirtualAnchor() Nodes that return true will be treated as a root view for the virtual nodes tree.
protected void	markUpdated()
void	onBeforeLayout() This method will be called by UIManagerModule once per batch, before calculating layout.
void	onCollectExtraUpdates(UIViewOperationQueue uiViewOperationQueue) Called after layout step at the end of the UI batch from UIManagerModule.
void	setBackgroundColor(java.lang.Integer color)
void	setColor(java.lang.Integer color)
void	setFontFamily(java.lang.String fontFamily)
void	setFontSize(float fontSize)
void	setFontStyle(java.lang.String fontStyleString)
void	setFontWeight(java.lang.String fontWeightString)
void	setLineHeight(int lineHeight)
void	setNumberOfLines(int numberOfLines)
void	setText(java.lang.String text)

Methods inherited from class com.facebook.react.uimanager.LayoutShadowNode

setAlignItems, setAlignSelf, setBorderWidths, setBottom, setFlex, setFlexDirection, setFlexWrap, setHeight, setJustifyContent, setLeft, setMargins, setPaddings, setPosition, setRight, setShouldNotifyOnLayout, setTop, setWidth

Methods inherited from class com.facebook.react.uimanager.ReactShadowNode

addChildAt, addNativeChildAt, dirty, getChildAt, getNativeChildCount, getNativeOffsetForChild, getNativeParent, getParent, getReactTag, getRootNode, getScreenHeight, getScreenWidth, getScreenX, getScreenY, getThemedContext, getTotalNativeChildren, getViewClass, hasUpdates, indexOfNativeChild, isLayoutOnly, markUpdateSeen, onAfterUpdateTransaction, removeAllChildren, removeAllNativeChildren, removeChildAt, removeNativeChildAt, setIsLayoutOnly, setThemedContext, updateProperties

Methods inherited from class com.facebook.csslayout.CSSNode

calculateLayout, getAlignItems, getAlignSelf, getBorder, getChildCount, getFlex, getFlexDirection, getJustifyContent, getLayoutDirection, getLayoutHeight, getLayoutWidth, getLayoutX, getLayoutY, getMargin, getPadding, getPositionBottom, getPositionLeft, getPositionRight, getPositionTop, getPositionType, getStyleDirection, getStyleHeight, getStyleWidth, hasNewLayout, indexOf, isDirty, isMeasureDefined, markLayoutSeen, reset, setAlignItems, setAlignSelf, setBorder, setDefaultPadding, setDirection, setFlexDirection, setJustifyContent, setMargin, setMeasureFunction, setPadding, setPositionBottom, setPositionLeft, setPositionRight, setPositionTop, setPositionType, setStyleHeight, setStyleWidth, setWrap, toString, valuesEqual

Methods inherited from class java.lang.Object

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

Field Detail

UNSET

public static final int UNSET

See Also:

Constant Field Values

PROP_TEXT

public static final java.lang.String PROP_TEXT

See Also:

Constant Field Values

mNumberOfLines

protected int mNumberOfLines

mFontSize

protected int mFontSize

mContainsImages

protected boolean mContainsImages

Constructor Detail

ReactTextShadowNode

public ReactTextShadowNode(boolean isVirtual)

Method Detail

fromTextCSSNode

protected static final android.text.Spannable fromTextCSSNode(ReactTextShadowNode textCSSNode)

onBeforeLayout

public void onBeforeLayout()

Description copied from class: ReactShadowNode

This method will be called by UIManagerModule once per batch, before calculating layout. Will be only called for nodes that are marked as updated with ReactShadowNode.markUpdated() or require layouting (marked with ReactShadowNode.dirty()).

Overrides:

onBeforeLayout in class ReactShadowNode

markUpdated

protected void markUpdated()

Overrides:

markUpdated in class ReactShadowNode

setText

public void setText(@Nullable
           java.lang.String text)

setNumberOfLines

public void setNumberOfLines(int numberOfLines)

setLineHeight

public void setLineHeight(int lineHeight)

setFontSize

public void setFontSize(float fontSize)

setColor

public void setColor(@Nullable
            java.lang.Integer color)

setBackgroundColor

public void setBackgroundColor(java.lang.Integer color)

setFontFamily

public void setFontFamily(@Nullable
                 java.lang.String fontFamily)

setFontWeight

public void setFontWeight(@Nullable
                 java.lang.String fontWeightString)

setFontStyle

public void setFontStyle(@Nullable
                java.lang.String fontStyleString)

isVirtualAnchor

public boolean isVirtualAnchor()

Description copied from class: ReactShadowNode

Nodes that return true will be treated as a root view for the virtual nodes tree. It means that NativeViewHierarchyManager will not try to perform manageChildren operation on such views. Good example is InputText view that may have children Text nodes but this whole hierarchy will be mapped to a single android EditText view.

Overrides:

isVirtualAnchor in class ReactShadowNode

isVirtual

public boolean isVirtual()

Description copied from class: ReactShadowNode

Nodes that return true will be treated as "virtual" nodes. That is, nodes that are not mapped into native views (e.g. nested text node). By default this method returns false.

Overrides:

isVirtual in class ReactShadowNode

onCollectExtraUpdates

public void onCollectExtraUpdates(UIViewOperationQueue uiViewOperationQueue)

Description copied from class: ReactShadowNode

Called after layout step at the end of the UI batch from UIManagerModule. May be used to enqueue additional ui operations for the native view. Will only be called on nodes marked as updated either with ReactShadowNode.dirty() or ReactShadowNode.markUpdated().

Overrides:

onCollectExtraUpdates in class ReactShadowNode

Parameters:

uiViewOperationQueue - interface for enqueueing UI operations