| /* |
| * Copyright 2019 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.animation |
| |
| /** |
| * A value holder contains two fields: A mutable value that is expected to change throughout an |
| * animation, and an immutable value converter |
| */ |
| interface ValueHolder<T> { |
| /** |
| * Value of the [ValueHolder]. This value will be updated by subclasses of [BaseAnimatedValue]. |
| */ |
| var value: T |
| } |
| |
| /** |
| * Creates a [ValueHolder] (of type [T]) with the initial value being [initValue]. |
| * |
| * @param initValue The initial value of the value holder to be created. |
| */ |
| fun <T> ValueHolder(initValue: T): ValueHolder<T> = |
| object : ValueHolder<T> { |
| override var value: T = initValue |
| } |