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Extend Yoga to be able clone Yoga Node with new children

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Reviewed By: emilsjolander

Differential Revision: D7245421

fbshipit-source-id: 72578c8261f29e4a12fc6c72a91f2f891cd58d48
This commit is contained in:
David Vacca
2018-04-01 18:27:08 -07:00
committed by Facebook Github Bot
parent 29ff30c539
commit 5be4ff0261
4 changed files with 109 additions and 19 deletions
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66
ReactAndroid/src/main/java/com/facebook/yoga/YogaNode.java
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@@ -30,7 +30,7 @@ public class YogaNode implements Cloneable {
static native int jni_YGNodeGetInstanceCount();
private YogaNode mOwner;
private List<YogaNode> mChildren;
@Nullable private List<YogaNode> mChildren;
private YogaMeasureFunction mMeasureFunction;
private YogaBaselineFunction mBaselineFunction;
private long mNativePointer;
@@ -147,6 +147,9 @@ public class YogaNode implements Cloneable {
}
public YogaNode getChildAt(int i) {
if (mChildren == null) {
throw new IllegalStateException("YogaNode does not have children");
}
return mChildren.get(i);
}
@@ -164,21 +167,62 @@ public class YogaNode implements Cloneable {
jni_YGNodeInsertChild(mNativePointer, child.mNativePointer, i);
}
private native void jni_YGNodeInsertSharedChild(long nativePointer, long childPointer, int index);
public void addSharedChildAt(YogaNode child, int i) {
if (mChildren == null) {
mChildren = new ArrayList<>(4);
}
mChildren.add(i, child);
child.mOwner = null;
jni_YGNodeInsertSharedChild(mNativePointer, child.mNativePointer, i);
}
private native long jni_YGNodeClone(long nativePointer, Object newNode);
@Override
public YogaNode clone() throws CloneNotSupportedException {
YogaNode clonedYogaNode = (YogaNode) super.clone();
long clonedNativePointer = jni_YGNodeClone(mNativePointer, clonedYogaNode);
clonedYogaNode.mNativePointer = clonedNativePointer;
clonedYogaNode.mChildren =
mChildren != null ? (List<YogaNode>) ((ArrayList) mChildren).clone() : null;
return clonedYogaNode;
public YogaNode clone() {
try {
YogaNode clonedYogaNode = (YogaNode) super.clone();
long clonedNativePointer = jni_YGNodeClone(mNativePointer, clonedYogaNode);
clonedYogaNode.mNativePointer = clonedNativePointer;
clonedYogaNode.mOwner = null;
clonedYogaNode.mChildren =
mChildren != null ? (List<YogaNode>) ((ArrayList) mChildren).clone() : null;
return clonedYogaNode;
} catch (CloneNotSupportedException ex) {
// This class implements Cloneable, this should not happen
throw new RuntimeException(ex);
}
}
public YogaNode cloneWithNewChildren() {
try {
YogaNode clonedYogaNode = (YogaNode) super.clone();
long clonedNativePointer = jni_YGNodeClone(mNativePointer, clonedYogaNode);
clonedYogaNode.mOwner = null;
clonedYogaNode.mNativePointer = clonedNativePointer;
clonedYogaNode.clearChildren();
return clonedYogaNode;
} catch (CloneNotSupportedException ex) {
// This class implements Cloneable, this should not happen
throw new RuntimeException(ex);
}
}
private native void jni_YGNodeClearChildren(long nativePointer);
private void clearChildren() {
mChildren = null;
jni_YGNodeClearChildren(mNativePointer);
}
private native void jni_YGNodeRemoveChild(long nativePointer, long childPointer);
public YogaNode removeChildAt(int i) {
if (mChildren == null) {
throw new IllegalStateException(
"Trying to remove a child of a YogaNode that does not have children");
}
final YogaNode child = mChildren.remove(i);
child.mOwner = null;
jni_YGNodeRemoveChild(mNativePointer, child.mNativePointer);
@@ -715,8 +759,12 @@ public class YogaNode implements Cloneable {
*/
@DoNotStrip
private final long replaceChild(YogaNode newNode, int childIndex) {
if (mChildren == null) {
throw new IllegalStateException("Cannot replace child. YogaNode does not have children");
}
mChildren.remove(childIndex);
mChildren.add(childIndex, newNode);
newNode.mOwner = this;
return newNode.mNativePointer;
}
}