jossiwolf

package com.amulyakhare.textdrawable;

import android.graphics.*;
import android.graphics.drawable.ShapeDrawable;
import android.graphics.drawable.shapes.OvalShape;
import android.graphics.drawable.shapes.RectShape;
import android.graphics.drawable.shapes.RoundRectShape;

/**
 * @author amulya

jossiwolf

/**
 * Helper class for [MotionLayout.TransitionListener] which provides Android Support Annotations and proper parameter names
 */
abstract class TransitionListener: MotionLayout.TransitionListener {

    /**
     * Called when a transition has been completed
     */
    override fun onTransitionCompleted(view: MotionLayout, @IdRes constraintSetId: Int) = Unit

jossiwolf

/**
 * Merges two [ConstraintSet]s. If a Constraint exists in the first [ConstraintSet] and the second one, the original value will be replaced by the new value.
 */
operator fun ConstraintSet.plus(other: ConstraintSet): ConstraintSet {
    return this.copy().apply { updateWith(other) }
}

/**
 * Clears the existing constraints and sets them to those of the [constraintSet]
 */

jossiwolf

import androidx.lifecycle.Lifecycle
import androidx.lifecycle.LifecycleObserver
import androidx.lifecycle.LifecycleOwner
import androidx.lifecycle.OnLifecycleEvent
import kotlin.properties.ReadOnlyProperty
import kotlin.reflect.KProperty

/**
 * Proxy for [LifecycleAwareLazyImpl]
 * @see LifecycleAwareLazyImpl

jossiwolf

class EnhancedMotionLayout @JvmOverloads constructor(
    context: Context,
    attrs: AttributeSet? = null,
    defStyleAttr: Int = 0
) : MotionLayout(context, attrs, defStyleAttr) {

    private val listeners = CopyOnWriteArrayList<TransitionListener>()

    fun addTransitionListener(listener: TransitionListener) {
        listeners.addIfAbsent(listener)