/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.animation;
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/**
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* Abstract base class used convert type T to another type V. This
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* is necessary when the value types of in animation are different
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* from the property type.
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* @see PropertyValuesHolder#setConverter(TypeConverter)
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*/
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public abstract class TypeConverter<T, V> {
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private Class<T> mFromClass;
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private Class<V> mToClass;
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public TypeConverter(Class<T> fromClass, Class<V> toClass) {
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mFromClass = fromClass;
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mToClass = toClass;
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}
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/**
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* Returns the target converted type. Used by the animation system to determine
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* the proper setter function to call.
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* @return The Class to convert the input to.
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*/
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Class<V> getTargetType() {
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return mToClass;
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}
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/**
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* Returns the source conversion type.
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*/
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Class<T> getSourceType() {
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return mFromClass;
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}
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/**
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* Converts a value from one type to another.
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* @param value The Object to convert.
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* @return A value of type V, converted from <code>value</code>.
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*/
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public abstract V convert(T value);
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}
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