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Support for Animated.add

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Summary:This change adds suport native animated support for Animated.add.

Animated.add lets you declare node that outputs a sum of it input nodes.

**Test Plan**
Play with the following playground app: https://gist.github.com/39de37faf07480fcd7d1
Run JS tests: `npm test Libraries/Animated/src/__tests__/AnimatedNative-test.js`
Run java tests: `buck test ReactAndroid/src/test/java/com/facebook/react/animated`
Closes https://github.com/facebook/react-native/pull/6641

Differential Revision: D3195963

fb-gh-sync-id: bb1e1a36821a0e071ad0e7d0fa99ce0d6b088b0a
fbshipit-source-id: bb1e1a36821a0e071ad0e7d0fa99ce0d6b088b0a
This commit is contained in:
Krzysztof Magiera
2016-04-19 02:57:15 -07:00
committed by Facebook Github Bot 8
parent 64d5da7754
commit b5375bdc09
6 changed files with 272 additions and 2 deletions
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40
ReactAndroid/src/main/java/com/facebook/react/animated/AnimatedAddition.java Normal file
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@@ -0,0 +1,40 @@
package com.facebook.react.animated;
import com.facebook.react.bridge.JSApplicationCausedNativeException;
import com.facebook.react.bridge.ReadableArray;
import com.facebook.react.bridge.ReadableMap;
/**
* Animated node that plays a role of value aggregator. It takes two or more value nodes as an input
* and outputs a sum of values outputted by those nodes.
*/
/*package*/ class AdditionAnimatedNode extends ValueAnimatedNode {
private final NativeAnimatedNodesManager mNativeAnimatedNodesManager;
private final int[] mInputNodes;
public AdditionAnimatedNode(
ReadableMap config,
NativeAnimatedNodesManager nativeAnimatedNodesManager) {
mNativeAnimatedNodesManager = nativeAnimatedNodesManager;
ReadableArray inputNodes = config.getArray("input");
mInputNodes = new int[inputNodes.size()];
for (int i = 0; i < mInputNodes.length; i++) {
mInputNodes[i] = inputNodes.getInt(i);
}
}
@Override
public void update() {
mValue = 0;
for (int i = 0; i < mInputNodes.length; i++) {
AnimatedNode animatedNode = mNativeAnimatedNodesManager.getNodeById(mInputNodes[i]);
if (animatedNode != null && animatedNode instanceof ValueAnimatedNode) {
mValue += ((ValueAnimatedNode) animatedNode).mValue;
} else {
throw new JSApplicationCausedNativeException("Illegal node ID set as an input for " +
"Animated.Add node");
}
}
}
}

2
ReactAndroid/src/main/java/com/facebook/react/animated/NativeAnimatedNodesManager.java
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@@ -72,6 +72,8 @@ import javax.annotation.Nullable;
mUpdatedNodes.add(node);
} else if ("props".equals(type)) {
node = new PropsAnimatedNode(config, this);
} else if ("addition".equals(type)) {
node = new AdditionAnimatedNode(config, this);
} else {
throw new JSApplicationIllegalArgumentException("Unsupported node type: " + type);
}

8
ReactAndroid/src/main/java/com/facebook/react/animated/ValueAnimatedNode.java
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@@ -15,11 +15,15 @@ import com.facebook.react.bridge.ReadableMap;
* Basic type of animated node that maps directly from {@code Animated.Value(x)} of Animated.js
* library.
*/
class ValueAnimatedNode extends AnimatedNode {
/*package*/ class ValueAnimatedNode extends AnimatedNode {
/*package*/ double mValue = Double.NaN;
ValueAnimatedNode(ReadableMap config) {
public ValueAnimatedNode() {
// empty constructor that can be used by subclasses
}
public ValueAnimatedNode(ReadableMap config) {
mValue = config.getDouble("value");
}
}