[WIP] Mojo native bindings interface.

mojo/public/js/connector.js

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 define("mojo/public/js/connector", [
   "mojo/public/js/buffer",
   "mojo/public/js/codec",
-  "mojo/public/js/core",
-  "mojo/public/js/support",
-], function(buffer, codec, core, support) {
+], function(buffer, codec) {
 
   function Connector(handle) {
-    if (!core.isHandle(handle))
+    if (!(handle instanceof MojoHandle))
       throw new Error("Connector: not a handle " + handle);
+
     this.handle_ = handle;
     this.dropWrites_ = false;
     this.error_ = false;
     this.incomingReceiver_ = null;
     this.readWatcher_ = null;
     this.errorHandler_ = null;
 
     if (handle) {
-      this.readWatcher_ = support.watch(handle,
-                                        core.HANDLE_SIGNAL_READABLE,
-                                        this.readMore_.bind(this));
+      this.readWatcher_ = handle.watch({ readable: true },
+                                       this.readMore_.bind(this));
     }
   }
 
   Connector.prototype.close = function() {
     if (this.readWatcher_) {
-      support.cancelWatch(this.readWatcher_);
+      this.readWatcher_.cancel();
       this.readWatcher_ = null;
     }
     if (this.handle_ != null) {
-      core.close(this.handle_);
+      this.handle_.close();
       this.handle_ = null;
     }
   };
 
   Connector.prototype.accept = function(message) {
     if (this.error_)
       return false;
 
     if (this.dropWrites_)
       return true;
 
-    var result = core.writeMessage(this.handle_,
-                                   new Uint8Array(message.buffer.arrayBuffer),
-                                   message.handles,
-                                   core.WRITE_MESSAGE_FLAG_NONE);
+    var result = this.handle_.writeMessage(message.buffer.arrayBuffer,
+                                           message.handles);
     switch (result) {
-      case core.RESULT_OK:
+      case Mojo.RESULT_OK:
         // The handles were successfully transferred, so we don't own them
         // anymore.
         message.handles = [];
         break;
-      case core.RESULT_FAILED_PRECONDITION:
+      case Mojo.RESULT_FAILED_PRECONDITION:
         // There's no point in continuing to write to this pipe since the other
         // end is gone. Avoid writing any future messages. Hide write failures
         // from the caller since we'd like them to continue consuming any
         // backlog of incoming messages before regarding the message pipe as
         // closed.
         this.dropWrites_ = true;
         break;
       default:
         // This particular write was rejected, presumably because of bad input.
         // The pipe is not necessarily in a bad state.
@@ skipping 15 matching lines @@
   };
 
   Connector.prototype.waitForNextMessageForTesting = function() {
     var wait = core.wait(this.handle_, core.HANDLE_SIGNAL_READABLE,
                          core.DEADLINE_INDEFINITE);
     this.readMore_(wait.result);
   };
 
   Connector.prototype.readMore_ = function(result) {
     for (;;) {
-      var read = core.readMessage(this.handle_,
-                                  core.READ_MESSAGE_FLAG_NONE);
+      var read = this.handle_.readMessage();
       if (this.handle_ == null) // The connector has been closed.
         return;
-      if (read.result == core.RESULT_SHOULD_WAIT)
+      if (read.result == Mojo.RESULT_SHOULD_WAIT)
         return;
-      if (read.result != core.RESULT_OK) {
+      if (read.result != Mojo.RESULT_OK) {
         this.error_ = true;
         if (this.errorHandler_)
           this.errorHandler_.onError(read.result);
         return;
       }
       var messageBuffer = new buffer.Buffer(read.buffer);
       var message = new codec.Message(messageBuffer, read.handles);
       if (this.incomingReceiver_)
         this.incomingReceiver_.accept(message);
     }
   };
 
   var exports = {};
   exports.Connector = Connector;
   return exports;
 });