| /* |
| * Copyright (C) 2013 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 android.animation; |
| |
| /** |
| * Abstract base class used convert type T to another type V. This |
| * is necessary when the value types of in animation are different |
| * from the property type. |
| * @see PropertyValuesHolder#setConverter(TypeConverter) |
| */ |
| public abstract class TypeConverter<T, V> { |
| private Class<T> mFromClass; |
| private Class<V> mToClass; |
| |
| public TypeConverter(Class<T> fromClass, Class<V> toClass) { |
| mFromClass = fromClass; |
| mToClass = toClass; |
| } |
| |
| /** |
| * Returns the target converted type. Used by the animation system to determine |
| * the proper setter function to call. |
| * @return The Class to convert the input to. |
| */ |
| Class<V> getTargetType() { |
| return mToClass; |
| } |
| |
| /** |
| * Returns the source conversion type. |
| */ |
| Class<T> getSourceType() { |
| return mFromClass; |
| } |
| |
| /** |
| * Converts a value from one type to another. |
| * @param value The Object to convert. |
| * @return A value of type V, converted from <code>value</code>. |
| */ |
| public abstract V convert(T value); |
| } |