InfiniteTransitionComposeAnimation.kt
/*
* Copyright 2022 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 androidx.compose.ui.tooling.animation
import androidx.compose.animation.core.InfiniteTransition
import androidx.compose.animation.tooling.ComposeAnimation
import androidx.compose.animation.tooling.ComposeAnimationType
import org.jetbrains.annotations.TestOnly
/**
* [ComposeAnimation] of type [ComposeAnimationType.INFINITE_TRANSITION].
*/
internal class InfiniteTransitionComposeAnimation
private constructor(
private val toolingState: ToolingState<Long>,
override val animationObject: InfiniteTransition,
) : ComposeAnimation {
override val type = ComposeAnimationType.INFINITE_TRANSITION
override val states: Set<Any> = setOf(0)
override val label: String = animationObject.label
fun setTimeNanos(playTimeNanos: Long) {
toolingState.value = playTimeNanos
}
companion object {
/**
* [ComposeAnimationType] from ANIMATABLE to UNSUPPORTED are not available in previous
* versions of the library. To avoid creating non-existing enum,
* [InfiniteTransitionComposeAnimation] should only be instantiated if
* [ComposeAnimationType] API for INFINITE_TRANSITION enum is available.
*/
var apiAvailable =
enumValues<ComposeAnimationType>().any { it.name == "INFINITE_TRANSITION" }
private set
internal fun AnimationSearch.InfiniteTransitionSearchInfo.parse():
InfiniteTransitionComposeAnimation? {
if (!apiAvailable) return null
return InfiniteTransitionComposeAnimation(
toolingState, infiniteTransition
)
}
/** This method is for testing only. */
@TestOnly
fun testOverrideAvailability(override: Boolean) {
apiAvailable = override
}
}
}