mojo: generate Proxies and Stubs for java bindings.

mojo/public/java/bindings/src/org/chromium/mojo/bindings/InterfaceWithClient.java

Index: mojo/public/java/bindings/src/org/chromium/mojo/bindings/InterfaceWithClient.java
diff --git a/mojo/public/java/bindings/src/org/chromium/mojo/bindings/InterfaceWithClient.java b/mojo/public/java/bindings/src/org/chromium/mojo/bindings/InterfaceWithClient.java
index 69fe6edcb3b5c217c1da54db65d2916e0b15dc2b..225b98a88ce31f7d8a8952e0402830254cfb7761 100644
--- a/mojo/public/java/bindings/src/org/chromium/mojo/bindings/InterfaceWithClient.java
+++ b/mojo/public/java/bindings/src/org/chromium/mojo/bindings/InterfaceWithClient.java
@@ -4,16 +4,98 @@
 
 package org.chromium.mojo.bindings;
 
+import org.chromium.mojo.system.Core;
+import org.chromium.mojo.system.MessagePipeHandle;
+
 /**
  * Base class for mojo generated interfaces that have a client.
  *
- * @param <C> the type of the client interface.
+ * @param <CI> the type of the client interface.
  */
-public interface InterfaceWithClient<C extends Interface> extends Interface {
+public interface InterfaceWithClient<CI extends Interface> extends Interface {
+
+    /**
+     * Proxy class for interfaces with a client.
+     */
+    interface Proxy<CI extends Interface> extends Interface.Proxy, InterfaceWithClient<CI> {
+    }
+
+    /**
+     * Base implementation of Proxy.
+     *
+     * @param <CI> the type of the client interface.
+     */
+    abstract class AbstractProxy<CI extends Interface> extends Interface.AbstractProxy
+            implements Proxy<CI> {
+
+        /**
+         * Constructor.
+         *
+         * @param core the Core implementation used to create pipes and access the async waiter.
+         * @param messageReceiver the message receiver to send message to.
+         */
+        public AbstractProxy(Core core, MessageReceiverWithResponder messageReceiver) {
+            super(core, messageReceiver);
+        }
+
+        /**
+         * @see InterfaceWithClient#setClient(Interface)
+         */
+        @Override
+        public void setClient(CI client) {
+            throw new UnsupportedOperationException(
+                    "Setting the client on a proxy is not supported");
+        }
+    }
 
     /**
-     * Set the client associated with this interface.
+     * Base manager implementation for interfaces that have a client.
+     *
+     * @param <I> the type of the interface the manager can handle.
+     * @param <P> the type of the proxy the manager can handle. To be noted, P always extends I.
+     * @param <CI> the type of the client interface.
      */
-    public void setClient(C client);
+    abstract class Manager<I extends InterfaceWithClient<CI>, P extends Proxy<CI>,
+            CI extends Interface> extends Interface.Manager<I, P> {
+
+        /**
+         * @see Interface.Manager#bind(Interface, MessagePipeHandle)
+         */
+        @Override
+        public final void bind(I impl, MessagePipeHandle handle) {
+            Router router = new RouterImpl(handle);
+            super.bind(handle.getCore(), impl, router);
+            @SuppressWarnings("unchecked")
+            CI client = (CI) getClientManager().attachProxy(handle.getCore(), router);
+            impl.setClient(client);
+            router.start();
+        }
+
+        /**
+         * Returns a Proxy that will send messages to the given |handle|. This implies that the
+         * other end of the handle must be connected to an implementation of the interface. |client|
+         * is the implementation of the client interface.
+         */
+        public P attachProxy(MessagePipeHandle handle, CI client) {
+            Router router = new RouterImpl(handle);
+            DelegatingConnectionErrorHandler handlers = new DelegatingConnectionErrorHandler();
+            handlers.addConnectionErrorHandler(client);
+            router.setErrorHandler(handlers);
+            getClientManager().bind(handle.getCore(), client, router);
+            P proxy = super.attachProxy(handle.getCore(), router);
+            handlers.addConnectionErrorHandler(proxy);
+            router.start();
+            return proxy;
+        }
 
+        /**
+         * Returns a manager for the client inetrafce.
+         */
+        protected abstract Interface.Manager<CI, ?> getClientManager();
+    }
+
+    /**
+     * Set the client implementation for this interface.
+     */
+    public void setClient(CI client);
 }