Merge "Use WeakReference to hold target in values." into rvc-dev am: 48866627f5 (f4d5a310) · Commits · e / os / android_frameworks_base

packages/SystemUI/src/com/android/systemui/util/animation/PhysicsAnimator.kt

+25 −7

Original line number	Diff line number	Diff line
		@@ -26,6 +26,7 @@ import androidx.dynamicanimation.animation.FloatPropertyCompat
		import androidx.dynamicanimation.animation.SpringAnimation
		import androidx.dynamicanimation.animation.SpringForce
		import com.android.systemui.util.animation.PhysicsAnimator.Companion.getInstance
		import java.lang.ref.WeakReference
		import java.util.WeakHashMap
		import kotlin.math.abs
		import kotlin.math.max
		@@ -87,7 +88,9 @@ private var verboseLogging = false
		*
		* @param T The type of the object being animated.
		*/
		class PhysicsAnimator<T> private constructor (val target: T) {
		class PhysicsAnimator<T> private constructor (target: T) {
		/** Weak reference to the animation target. */
		val weakTarget = WeakReference(target)

		/** Data class for representing animation frame updates. */
		data class AnimationUpdate(val value: Float, val velocity: Float)
		@@ -307,6 +310,11 @@ class PhysicsAnimator<T> private constructor (val target: T) {
		springConfig: SpringConfig,
		flingMustReachMinOrMax: Boolean = false
		): PhysicsAnimator<T> {
		val target = weakTarget.get()
		if (target == null) {
		Log.w(TAG, "Trying to animate a GC-ed target.")
		return this
		}
		val flingConfigCopy = flingConfig.copy()
		val springConfigCopy = springConfig.copy()
		val toAtLeast = if (startVelocity < 0) flingConfig.min else flingConfig.max
		@@ -454,6 +462,11 @@ class PhysicsAnimator<T> private constructor (val target: T) {
		"this message in a test, call PhysicsAnimatorTestUtils#prepareForTest in " +
		"your test setup.")
		}
		val target = weakTarget.get()
		if (target == null) {
		Log.w(TAG, "Trying to animate a GC-ed object.")
		return
		}

		// Functions that will actually start the animations. These are run after we build and add
		// the InternalListener, since some animations might update/end immediately and we don't
		@@ -489,7 +502,7 @@ class PhysicsAnimator<T> private constructor (val target: T) {
		cancel(animatedProperty)

		// Apply the configuration and start the animation.
		getFlingAnimation(animatedProperty)
		getFlingAnimation(animatedProperty, target)
		.also { flingConfig.applyToAnimation(it) }
		.start()
		}
		@@ -502,7 +515,7 @@ class PhysicsAnimator<T> private constructor (val target: T) {
		// If there is no corresponding fling config, we're only springing.
		if (flingConfig == null) {
		// Apply the configuration and start the animation.
		val springAnim = getSpringAnimation(animatedProperty)
		val springAnim = getSpringAnimation(animatedProperty, target)
		springConfig.applyToAnimation(springAnim)
		animationStartActions.add(springAnim::start)
		} else {
		@@ -558,7 +571,7 @@ class PhysicsAnimator<T> private constructor (val target: T) {
		}

		// Apply the configuration and start the spring animation.
		getSpringAnimation(animatedProperty)
		getSpringAnimation(animatedProperty, target)
		.also { springConfig.applyToAnimation(it) }
		.start()
		}
		@@ -570,6 +583,7 @@ class PhysicsAnimator<T> private constructor (val target: T) {

		// Add an internal listener that will dispatch animation events to the provided listeners.
		internalListeners.add(InternalListener(
		target,
		getAnimatedProperties(),
		ArrayList(updateListeners),
		ArrayList(endListeners),
		@@ -594,7 +608,10 @@ class PhysicsAnimator<T> private constructor (val target: T) {
		}

		/** Retrieves a spring animation for the given property, building one if needed. */
		private fun getSpringAnimation(property: FloatPropertyCompat<in T>): SpringAnimation {
		private fun getSpringAnimation(
		property: FloatPropertyCompat<in T>,
		target: T
		): SpringAnimation {
		return springAnimations.getOrPut(
		property,
		{ configureDynamicAnimation(SpringAnimation(target, property), property)
		@@ -602,7 +619,7 @@ class PhysicsAnimator<T> private constructor (val target: T) {
		}

		/** Retrieves a fling animation for the given property, building one if needed. */
		private fun getFlingAnimation(property: FloatPropertyCompat<in T>): FlingAnimation {
		private fun getFlingAnimation(property: FloatPropertyCompat<in T>, target: T): FlingAnimation {
		return flingAnimations.getOrPut(
		property,
		{ configureDynamicAnimation(FlingAnimation(target, property), property)
		@@ -638,6 +655,7 @@ class PhysicsAnimator<T> private constructor (val target: T) {
		* appropriate value for allEnded to [EndListener.onAnimationEnd].
		*/
		internal inner class InternalListener constructor(
		private val target: T,
		private var properties: Set<FloatPropertyCompat<in T>>,
		private var updateListeners: List<UpdateListener<T>>,
		private var endListeners: List<EndListener<T>>,

packages/SystemUI/tests/src/com/android/systemui/util/animation/PhysicsAnimatorTest.kt

+5 −2

Original line number	Diff line number	Diff line
		@@ -21,6 +21,7 @@ import org.junit.Assert
		import org.junit.Assert.assertEquals
		import org.junit.Assert.assertFalse
		import org.junit.Assert.assertNotEquals
		import org.junit.Assert.assertNotNull
		import org.junit.Assert.assertTrue
		import org.junit.Before
		import org.junit.Ignore
		@@ -590,8 +591,10 @@ class PhysicsAnimatorTest : SysuiTestCase() {
		updatesForProperty.remove(update)
		}

		val target = animator.weakTarget.get()
		assertNotNull(target)
		// Mark this invocation verified.
		verify(mockUpdateListener).onAnimationUpdateForProperty(animator.target, updateMap)
		verify(mockUpdateListener).onAnimationUpdateForProperty(target!!, updateMap)
		}

		verifyNoMoreInteractions(mockUpdateListener)