Package androidx.constraintlayout.core.widgets

Class HelperWidget

java.lang.Object

androidx.constraintlayout.core.widgets.ConstraintWidget

androidx.constraintlayout.core.widgets.HelperWidget

All Implemented Interfaces:

Helper

Direct Known Subclasses:

Barrier, VirtualLayout

public class HelperWidget
extends ConstraintWidget
implements Helper

HelperWidget class

Nested Class Summary

Nested classes/interfaces inherited from class androidx.constraintlayout.core.widgets.ConstraintWidget

ConstraintWidget.DimensionBehaviour

Field Summary

Fields

Modifier and Type	Field	Description
ConstraintWidget[]	mWidgets
int	mWidgetsCount

Fields inherited from class androidx.constraintlayout.core.widgets.ConstraintWidget

ANCHOR_BASELINE, ANCHOR_BOTTOM, ANCHOR_LEFT, ANCHOR_RIGHT, ANCHOR_TOP, BOTH, CHAIN_PACKED, CHAIN_SPREAD, CHAIN_SPREAD_INSIDE, DEFAULT_BIAS, DIRECT, frame, GONE, HORIZONTAL, horizontalChainRun, horizontalGroup, INVISIBLE, isTerminalWidget, mAnchors, MATCH_CONSTRAINT_PERCENT, MATCH_CONSTRAINT_RATIO, MATCH_CONSTRAINT_RATIO_RESOLVED, MATCH_CONSTRAINT_SPREAD, MATCH_CONSTRAINT_WRAP, mBaseline, mBottom, mCenter, mCircleConstraintAngle, mDimensionRatio, mDimensionRatioSide, measured, mHorizontalResolution, mHorizontalRun, mIsHeightWrapContent, mIsWidthWrapContent, mLeft, mListAnchors, mListDimensionBehaviors, mListNextMatchConstraintsWidget, mMatchConstraintDefaultHeight, mMatchConstraintDefaultWidth, mMatchConstraintMaxHeight, mMatchConstraintMaxWidth, mMatchConstraintMinHeight, mMatchConstraintMinWidth, mMatchConstraintPercentHeight, mMatchConstraintPercentWidth, mMinHeight, mMinWidth, mNextChainWidget, mOffsetX, mOffsetY, mParent, mResolvedMatchConstraintDefault, mRight, mTop, mVerticalResolution, mVerticalRun, mWeight, mX, mY, run, SOLVER, stringId, UNKNOWN, VERTICAL, verticalChainRun, verticalGroup, VISIBLE, WRAP_BEHAVIOR_HORIZONTAL_ONLY, WRAP_BEHAVIOR_INCLUDED, WRAP_BEHAVIOR_SKIPPED, WRAP_BEHAVIOR_VERTICAL_ONLY

Constructor Summary

Constructors

Constructor	Description
HelperWidget()

Method Summary

Modifier and Type	Method	Description
void	add(ConstraintWidget widget)	Add a widget to the helper
void	addDependents(java.util.ArrayList<WidgetGroup> dependencyLists, int orientation, WidgetGroup group)
void	copy(ConstraintWidget src, java.util.HashMap<ConstraintWidget,ConstraintWidget> map)
int	findGroupInDependents(int orientation)
void	removeAllIds()	Reset the widgets list contained by this helper
void	updateConstraints(ConstraintWidgetContainer container)

Methods inherited from class androidx.constraintlayout.core.widgets.ConstraintWidget

addChildrenToSolverByDependency, addToSolver, allowedInBarrier, connect, connect, connect, connectCircularConstraint, createObjectVariables, ensureMeasureRequested, ensureWidgetRuns, getAnchor, getAnchors, getBaselineDistance, getBiasPercent, getBottom, getCompanionWidget, getContainerItemSkip, getDebugName, getDimensionBehaviour, getDimensionRatio, getDimensionRatioSide, getHasBaseline, getHeight, getHorizontalBiasPercent, getHorizontalChainControlWidget, getHorizontalChainStyle, getHorizontalDimensionBehaviour, getHorizontalMargin, getLastHorizontalMeasureSpec, getLastVerticalMeasureSpec, getLeft, getLength, getMaxHeight, getMaxWidth, getMinHeight, getMinWidth, getNextChainMember, getOptimizerWrapHeight, getOptimizerWrapWidth, getParent, getPreviousChainMember, getRight, getRootX, getRootY, getRun, getSceneString, getTop, getType, getVerticalBiasPercent, getVerticalChainControlWidget, getVerticalChainStyle, getVerticalDimensionBehaviour, getVerticalMargin, getVisibility, getWidth, getWrapBehaviorInParent, getX, getY, hasBaseline, hasDanglingDimension, hasDependencies, hasDimensionOverride, hasResolvedTargets, immediateConnect, isAnimated, isHeightWrapContent, isHorizontalSolvingPassDone, isInBarrier, isInHorizontalChain, isInPlaceholder, isInVerticalChain, isInVirtualLayout, isMeasureRequested, isResolvedHorizontally, isResolvedVertically, isRoot, isSpreadHeight, isSpreadWidth, isVerticalSolvingPassDone, isWidthWrapContent, markHorizontalSolvingPassDone, markVerticalSolvingPassDone, oppositeDimensionDependsOn, oppositeDimensionsTied, reset, resetAllConstraints, resetAnchor, resetAnchors, resetFinalResolution, resetSolverVariables, resetSolvingPassFlag, serialize, setAnimated, setBaselineDistance, setCompanionWidget, setContainerItemSkip, setDebugName, setDebugSolverName, setDimension, setDimensionRatio, setDimensionRatio, setFinalBaseline, setFinalFrame, setFinalHorizontal, setFinalLeft, setFinalTop, setFinalVertical, setFrame, setFrame, setGoneMargin, setHasBaseline, setHeight, setHeightWrapContent, setHorizontalBiasPercent, setHorizontalChainStyle, setHorizontalDimension, setHorizontalDimensionBehaviour, setHorizontalMatchStyle, setHorizontalWeight, setInBarrier, setInPlaceholder, setInVirtualLayout, setLastMeasureSpec, setLength, setMaxHeight, setMaxWidth, setMeasureRequested, setMinHeight, setMinWidth, setOffset, setOrigin, setParent, setType, setupDimensionRatio, setVerticalBiasPercent, setVerticalChainStyle, setVerticalDimension, setVerticalDimensionBehaviour, setVerticalMatchStyle, setVerticalWeight, setVisibility, setWidth, setWidthWrapContent, setWrapBehaviorInParent, setX, setY, toString, updateFromRuns, updateFromSolver

Methods inherited from class java.lang.Object

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

Field Detail

mWidgets

public ConstraintWidget[] mWidgets

mWidgetsCount

public int mWidgetsCount

Constructor Detail

HelperWidget

public HelperWidget()

Method Detail

updateConstraints

public void updateConstraints(ConstraintWidgetContainer container)

Specified by:

updateConstraints in interface Helper

add

public void add(ConstraintWidget widget)

Add a widget to the helper

Specified by:

add in interface Helper

Parameters:

widget - a widget

copy

public void copy(ConstraintWidget src,
                 java.util.HashMap<ConstraintWidget,ConstraintWidget> map)

Overrides:

copy in class ConstraintWidget

removeAllIds

public void removeAllIds()

Reset the widgets list contained by this helper

Specified by:

removeAllIds in interface Helper

addDependents

public void addDependents(java.util.ArrayList<WidgetGroup> dependencyLists,
                          int orientation,
                          WidgetGroup group)

findGroupInDependents

public int findGroupInDependents(int orientation)