From 83fddd8af62bac47d7bad239691bdfc264934b8a Mon Sep 17 00:00:00 2001
From: Emil Sjolander <emilsj@fb.com>
Date: Thu, 27 Apr 2017 16:19:17 -0700
Subject: [PATCH] Expose print function to java

Summary: Allow printing a node from java

Reviewed By: astreet

Differential Revision: D4962456

fbshipit-source-id: 8f62ed6724490e621fbc11573b2a9b25c56e51f1
---
 java/com/facebook/yoga/YogaNode.java | 10 ++++++++++
 java/jni/YGJNI.cpp                   |  6 ++++++
 2 files changed, 16 insertions(+)

diff --git a/java/com/facebook/yoga/YogaNode.java b/java/com/facebook/yoga/YogaNode.java
index f995d786..3af33cdf 100644
--- a/java/com/facebook/yoga/YogaNode.java
+++ b/java/com/facebook/yoga/YogaNode.java
@@ -667,4 +667,14 @@ public class YogaNode {
   public Object getData() {
     return mData;
   }
+
+  private native void jni_YGNodePrint(long nativePointer);
+
+  /**
+   * Use the set logger (defaults to adb log) to print out the styles, children, and computed
+   * layout of the tree rooted at this node.
+   */
+  public void print() {
+    jni_YGNodePrint(mNativePointer);
+  }
 }
diff --git a/java/jni/YGJNI.cpp b/java/jni/YGJNI.cpp
index c9366593..fd9e6081 100644
--- a/java/jni/YGJNI.cpp
+++ b/java/jni/YGJNI.cpp
@@ -223,6 +223,11 @@ void jni_YGNodeReset(alias_ref<jobject> thiz, jlong nativePointer) {
   YGNodeSetPrintFunc(node, YGPrint);
 }
 
+void jni_YGNodePrint(alias_ref<jobject> thiz, jlong nativePointer) {
+  const YGNodeRef node = _jlong2YGNodeRef(nativePointer);
+  YGNodePrint(node, (YGPrintOptions) (YGPrintOptionsStyle | YGPrintOptionsLayout | YGPrintOptionsChildren));
+}
+
 void jni_YGNodeInsertChild(alias_ref<jobject>, jlong nativePointer, jlong childPointer, jint index) {
   YGNodeInsertChild(_jlong2YGNodeRef(nativePointer), _jlong2YGNodeRef(childPointer), index);
 }
@@ -490,6 +495,7 @@ jint JNI_OnLoad(JavaVM *vm, void *) {
                         YGMakeNativeMethod(jni_YGNodeGetInstanceCount),
                         YGMakeNativeMethod(jni_YGSetLogger),
                         YGMakeNativeMethod(jni_YGLog),
+                        YGMakeNativeMethod(jni_YGNodePrint),
                     });
     registerNatives("com/facebook/yoga/YogaConfig",
                     {