Expose CSSLayoutSetLogger to java

Summary: Expose CSSLayoutSetLogger to java

Reviewed By: astreet

Differential Revision: D4153502

fbshipit-source-id: 630909d9d0d36d94d7cd3027476ddb52668b8cc0

java/com/facebook/csslayout/CSSLogger.java

@@ -0,0 +1,27 @@
+/**
+ * Copyright (c) 2014-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.csslayout;
+
+import com.facebook.proguard.annotations.DoNotStrip;
+
+/**
+ * Inteface for recieving logs from native layer. Use by setting CSSNode.setLogger(myLogger);
+ * LOG_LEVEL_ERROR indicated a fatal error.
+ */
+public interface CSSLogger {
+  public final int LOG_LEVEL_ERROR = 0;
+  public final int LOG_LEVEL_WARN = 1;
+  public final int LOG_LEVEL_INFO = 2;
+  public final int LOG_LEVEL_DEBUG = 3;
+  public final int LOG_LEVEL_VERBOSE = 4;
+
+  @DoNotStrip
+  void log(int level, String message);
+}