| /* |
| * Copyright 2018 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.ui.animation.animations |
| |
| import androidx.ui.VoidCallback |
| import androidx.ui.animation.Animation |
| import androidx.ui.animation.AnimationStatus |
| import androidx.ui.animation.AnimationStatusListener |
| |
| /** |
| * An animation that is always dismissed. |
| * |
| * Using this constant involves less overhead than building an |
| * [AnimationController] with an initial value of 0.0. This is useful when an |
| * API expects an animation but you don't actually want to animate anything. |
| */ |
| object AlwaysDismissedAnimation : Animation<Float>() { |
| |
| override fun addListener(listener: VoidCallback) {} |
| |
| override fun removeListener(listener: VoidCallback) {} |
| |
| override fun addStatusListener(listener: AnimationStatusListener) {} |
| |
| override fun removeStatusListener(listener: AnimationStatusListener) {} |
| |
| override val status = AnimationStatus.DISMISSED |
| |
| override val value = 0.0f |
| |
| override fun toString() = "AlwaysDismissedAnimation" |
| } |