Package androidx.constraintlayout.core.state

Class State

  • public class State
extends java.lang.Object
    Represents a full state of a ConstraintLayout

    • Field Detail

      • mReferences

        protected java.util.HashMap<java.lang.Object,​Reference> mReferences

      • mHelperReferences

        protected java.util.HashMap<java.lang.Object,​HelperReference> mHelperReferences

      • PARENT

        public static final java.lang.Integer PARENT

    • Constructor Detail

      • State

        public State()

    • Method Detail

      • setDpToPixel

        public void setDpToPixel​(CorePixelDp dpToPixel)
        Set the function that converts dp to Pixels

      • reset

        public void reset()
        Clear the state

      • convertDimension

        public int convertDimension​(java.lang.Object value)
        Implements a conversion function for values, returning int. This can be used in case values (e.g. margins) are represented via an object, not directly an int.
        Parameters:
        value - the object to convert from

      • createConstraintReference

        public ConstraintReference createConstraintReference​(java.lang.Object key)
        Create a new reference given a key.

      • sameFixedWidth

        public boolean sameFixedWidth​(int width)

      • sameFixedHeight

        public boolean sameFixedHeight​(int height)

      • horizontalGuideline

        public GuidelineReference horizontalGuideline​(java.lang.Object key)

      • verticalGuideline

        public GuidelineReference verticalGuideline​(java.lang.Object key)

      • guideline

        public GuidelineReference guideline​(java.lang.Object key,
                                    int orientation)

      • getFlow

        public FlowReference getFlow​(java.lang.Object key,
                             boolean vertical)
        Gets a reference to a Flow object. Creating it if needed.
        Parameters:
        key - id of the reference
        vertical - is it a vertical or horizontal flow
        Returns:
        a FlowReference

      • getVerticalFlow

        public FlowReference getVerticalFlow()
        Get a VerticalFlowReference
        Returns:
        a VerticalFlowReference

      • getVerticalFlow

        public FlowReference getVerticalFlow​(java.lang.Object... references)
        Get a VerticalFlowReference and add it to references
        Parameters:
        references - where we add the VerticalFlowReference
        Returns:
        a VerticalFlowReference

      • getHorizontalFlow

        public FlowReference getHorizontalFlow()
        Get a HorizontalFlowReference
        Returns:
        a HorizontalFlowReference

      • getHorizontalFlow

        public FlowReference getHorizontalFlow​(java.lang.Object... references)
        Get a HorizontalFlowReference and add it to references
        Parameters:
        references - references where we the HorizontalFlowReference
        Returns:
        a HorizontalFlowReference

      • directMapping

        public void directMapping()

      • map

        public void map​(java.lang.Object key,
                java.lang.Object view)

      • setTag

        public void setTag​(java.lang.String key,
                   java.lang.String tag)

      • getIdsForTag

        public java.util.ArrayList<java.lang.String> getIdsForTag​(java.lang.String tag)

      • baselineNeededFor

        public void baselineNeededFor​(java.lang.Object id)
        Baseline is needed for this object

      • isBaselineNeeded

        public boolean isBaselineNeeded​(ConstraintWidget constraintWidget)
        Does this constraintWidget need a baseline
        Returns:
        true if the constraintWidget needs a baseline