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Commit d046d3eb authored by Johannes Gallmann's avatar Johannes Gallmann
Browse files

Add AnimatorListener extensions for easy kotlin usage 

These extension functions already exist in core-ktx: https://source.corp.google.com/aosp-androidx/core/core-ktx/src/main/java/androidx/core/animation/Animator.kt

Those unfortunately do not support androidx.core.Animator but only android.animation.Animator.

Bug: 270689413
Test: None
Change-Id: I90ce12f001863ed13f7cef5cbe6f850d3b8b686a
parent 1daff5b6

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

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+80 −0
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2023 The Android Open Source Project

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */



package com.android.systemui.util



import androidx.core.animation.Animator



/**

 * Add an action which will be invoked when the animation has ended.

 *

 * @return the [Animator.AnimatorListener] added to the Animator

 * @see Animator.end

 */

inline fun Animator.doOnEnd(

    crossinline action: (animator: Animator) -> Unit

): Animator.AnimatorListener = addListener(onEnd = action)



/**

 * Add an action which will be invoked when the animation has started.

 *

 * @return the [Animator.AnimatorListener] added to the Animator

 * @see Animator.start

 */

inline fun Animator.doOnStart(

    crossinline action: (animator: Animator) -> Unit

): Animator.AnimatorListener = addListener(onStart = action)



/**

 * Add an action which will be invoked when the animation has been cancelled.

 *

 * @return the [Animator.AnimatorListener] added to the Animator

 * @see Animator.cancel

 */

inline fun Animator.doOnCancel(

    crossinline action: (animator: Animator) -> Unit

): Animator.AnimatorListener = addListener(onCancel = action)



/**

 * Add an action which will be invoked when the animation has repeated.

 *

 * @return the [Animator.AnimatorListener] added to the Animator

 */

inline fun Animator.doOnRepeat(

    crossinline action: (animator: Animator) -> Unit

): Animator.AnimatorListener = addListener(onRepeat = action)



/**

 * Add a listener to this Animator using the provided actions.

 *

 * @return the [Animator.AnimatorListener] added to the Animator

 */

inline fun Animator.addListener(

    crossinline onEnd: (animator: Animator) -> Unit = {},

    crossinline onStart: (animator: Animator) -> Unit = {},

    crossinline onCancel: (animator: Animator) -> Unit = {},

    crossinline onRepeat: (animator: Animator) -> Unit = {}

): Animator.AnimatorListener {

    val listener =

        object : Animator.AnimatorListener {

            override fun onAnimationRepeat(animator: Animator) = onRepeat(animator)

            override fun onAnimationEnd(animator: Animator) = onEnd(animator)

            override fun onAnimationCancel(animator: Animator) = onCancel(animator)

            override fun onAnimationStart(animator: Animator) = onStart(animator)

        }

    addListener(listener)

    return listener

}