/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*/
package com.facebook.react.animated;
import com.facebook.react.bridge.ReadableMap;
import javax.annotation.Nullable;
/**
* Basic type of animated node that maps directly from {@code Animated.Value(x)} of Animated.js
* library.
*/
/*package*/ class ValueAnimatedNode extends AnimatedNode {
/*package*/ double mValue = Double.NaN;
/*package*/ double mOffset = 0;
private @Nullable AnimatedNodeValueListener mValueListener;
public ValueAnimatedNode() {
// empty constructor that can be used by subclasses
}
public ValueAnimatedNode(ReadableMap config) {
mValue = config.getDouble("value");
mOffset = config.getDouble("offset");
}
public double getValue() {
return mOffset + mValue;
}
public void flattenOffset() {
mValue += mOffset;
mOffset = 0;
}
public void extractOffset() {
mOffset += mValue;
mValue = 0;
}
public void onValueUpdate() {
if (mValueListener == null) {
return;
}
mValueListener.onValueUpdate(mValue);
}
public void setValueListener(@Nullable AnimatedNodeValueListener listener) {
mValueListener = listener;
}
}