JAVA BINDINGS WIP.

mojo/bindings/java/src/org/chromium/mojo/bindings/Encoder.java

Index: mojo/bindings/java/src/org/chromium/mojo/bindings/Encoder.java
diff --git a/mojo/bindings/java/src/org/chromium/mojo/bindings/Encoder.java b/mojo/bindings/java/src/org/chromium/mojo/bindings/Encoder.java
index 9ec2cb248e0bb8cc5e697a29cdec93f84398bbf8..70b15ee332410f9784c35c59f7a4ffe371bc2fdc 100644
--- a/mojo/bindings/java/src/org/chromium/mojo/bindings/Encoder.java
+++ b/mojo/bindings/java/src/org/chromium/mojo/bindings/Encoder.java
@@ -7,6 +7,8 @@ package org.chromium.mojo.bindings;
 import org.chromium.mojo.bindings.Struct.DataHeader;
 import org.chromium.mojo.system.Core;
 import org.chromium.mojo.system.Handle;
+import org.chromium.mojo.system.MessagePipeHandle;
+import org.chromium.mojo.system.Pair;
 
 import java.nio.ByteBuffer;
 import java.nio.ByteOrder;
@@ -139,7 +141,6 @@ public class Encoder {
         Encoder result = new Encoder(mEncoderState);
         result.encode(dataHeader);
         return result;
-
     }
 
     /**
@@ -243,25 +244,41 @@ public class Encoder {
     /**
      * Encode an {@link Interface}.
      */
-    public <T extends Interface> void encode(T v, int offset, Object builder) {
+    public <T extends Interface> void encode(T v, int offset,
+            Interface.Builder<T, ?> builder) {
+        if (v == null) {
+            encode(-1, offset);
+            return;
+        }
         if (mEncoderState.core == null) {
             throw new UnsupportedOperationException(
                     "The encoder has been created without a Core. It can't encode an interface.");
         }
-        // TODO(qsr): To be implemented when interfaces proxy and stubs are implemented.
-        throw new UnsupportedOperationException("Unimplemented operation");
+        if (v instanceof Interface.Proxy) {
+            Interface.Proxy proxy = (Interface.Proxy) v;
+            if (proxy.getMessageReceiver() instanceof HandleOwner) {
+                encode(((HandleOwner<?>) proxy.getMessageReceiver()).passHandle(), offset);
+                return;
+            }
+        }
+        Pair<MessagePipeHandle, MessagePipeHandle> handles = mEncoderState.core.createMessagePipe();
+        builder.bind(handles.first, v);
+        encode(handles.second, offset);
     }
 
     /**
      * Encode an {@link InterfaceRequest}.
      */
     public <T extends Interface> void encode(InterfaceRequest<T> v, int offset) {
+        if (v == null) {
+            encode(-1, offset);
+            return;
+        }
         if (mEncoderState.core == null) {
             throw new UnsupportedOperationException(
                     "The encoder has been created without a Core. It can't encode an interface.");
         }
-        // TODO(qsr): To be implemented when interfaces proxy and stubs are implemented.
-        throw new UnsupportedOperationException("Unimplemented operation");
+        encode(v.passHandle(), offset);
     }
 
     /**
@@ -347,7 +364,7 @@ public class Encoder {
     }
 
     /**
-     * Encodes an array of doubles.
+     * Encodes an array of doubles.result
      */
     public void encode(double[] v, int offset) {
         if (v == null) {
@@ -374,7 +391,8 @@ public class Encoder {
     /**
      * Encodes an array of {@link Interface}.
      */
-    public <T extends Interface> void encode(T[] v, int offset, Object builder) {
+    public <T extends Interface> void encode(T[] v, int offset,
+            Interface.Builder<T, ?> builder) {
         if (v == null) {
             encodeNullPointer(offset);
             return;