Introduce InterfaceEndpointClient(IEC), InterfaceEndpointHandle and

mojo/public/js/bindings.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/bindings", [
   "mojo/public/js/core",
-  "mojo/public/js/lib/control_message_proxy",
   "mojo/public/js/interface_types",
+  "mojo/public/js/lib/interface_endpoint_client",
   "mojo/public/js/router",
-], function(core, controlMessageProxy, types, router) {
+], function(core, types, interfaceEndpointClient, router) {
+
+  var InterfaceEndpointClient = interfaceEndpointClient.InterfaceEndpointClient;
 
   // ---------------------------------------------------------------------------
 
   function makeRequest(interfacePtr) {
     var pipe = core.createMessagePipe();
     interfacePtr.ptr.bind(new types.InterfacePtrInfo(pipe.handle0, 0));
     return new types.InterfaceRequest(pipe.handle1);
   }
 
   // ---------------------------------------------------------------------------
 
   // Operations used to setup/configure an interface pointer. Exposed as the
   // |ptr| field of generated interface pointer classes.
   // |ptrInfoOrHandle| could be omitted and passed into bind() later.
   function InterfacePtrController(interfaceType, ptrInfoOrHandle) {
     this.version = 0;
 
     this.interfaceType_ = interfaceType;
     this.router_ = null;
+    this.interfaceEndpointClient_ = null;
     this.proxy_ = null;
 
-    // |router_| is lazily initialized. |handle_| is valid between bind() and
-    // the initialization of |router_|.
+    // |router_| and |interfaceEndpointClient_| are lazily initialized.
+    // |handle_| is valid between bind() and
+    // the initialization of |router_| and |interfaceEndpointClient_|.
     this.handle_ = null;
     this.controlMessageProxy_ = null;

[yzshen1, 2017/03/28 00:45:59]

I think this one is not used anymore?

[wangjimmy, 2017/03/29 17:01:18]

Done.

 
     if (ptrInfoOrHandle)
       this.bind(ptrInfoOrHandle);
   }
 
   InterfacePtrController.prototype.bind = function(ptrInfoOrHandle) {
     this.reset();
 
     if (ptrInfoOrHandle instanceof types.InterfacePtrInfo) {
       this.version = ptrInfoOrHandle.version;
       this.handle_ = ptrInfoOrHandle.handle;
     } else {
       this.handle_ = ptrInfoOrHandle;
     }
   };
 
   InterfacePtrController.prototype.isBound = function() {
     return this.router_ !== null || this.handle_ !== null;
   };
 
   // Although users could just discard the object, reset() closes the pipe
   // immediately.
   InterfacePtrController.prototype.reset = function() {
     this.version = 0;
+    if (this.interfaceEndpointClient_) {
+      this.interfaceEndpointClient_.closeWithReason();

[yzshen1, 2017/03/28 00:45:59]

How about we rename the method to close(), which can optionally take a reason?

It is a little weird to call closeWithReason() without any param.

[wangjimmy, 2017/03/29 17:01:18]

Done. I agreed. Renamed to close

+      this.interfaceEndpointClient_ = null;
+    }
     if (this.router_) {
       this.router_.close();
       this.router_ = null;
 
       this.proxy_ = null;
     }
     if (this.handle_) {
       core.close(this.handle_);
       this.handle_ = null;
     }
   };
 
-  InterfacePtrController.prototype.setConnectionErrorHandler
-      = function(callback) {
+  InterfacePtrController.prototype.resetWithReason = function(reason) {
+    this.configureProxyIfNecessary_();
+    this.interfaceEndpointClient_.closeWithReason(reason);
+    this.interfaceEndpointClient_ = null;
+    this.reset();
+  };
+
+  InterfacePtrController.prototype.setConnectionErrorHandler = function(
+      callback) {
     if (!this.isBound())
       throw new Error("Cannot set connection error handler if not bound.");
 
     this.configureProxyIfNecessary_();
-    this.router_.setErrorHandler(callback);
+    this.interfaceEndpointClient_.setConnectionErrorHandler(callback);
   };
 
   InterfacePtrController.prototype.passInterface = function() {
     var result;
     if (this.router_) {
       // TODO(yzshen): Fix Router interface to support extracting handle.
       result = new types.InterfacePtrInfo(
           this.router_.connector_.handle_, this.version);
       this.router_.connector_.handle_ = null;
     } else {
       // This also handles the case when this object is not bound.
       result = new types.InterfacePtrInfo(this.handle_, this.version);
       this.handle_ = null;
     }
 
     this.reset();
     return result;
   };
 
   InterfacePtrController.prototype.getProxy = function() {
     this.configureProxyIfNecessary_();
     return this.proxy_;
   };
 
-  InterfacePtrController.prototype.enableTestingMode = function() {
+  InterfacePtrController.prototype.waitForNextMessageForTesting = function() {
     this.configureProxyIfNecessary_();
-    return this.router_.enableTestingMode();
+    this.router_.waitForNextMessageForTesting();
   };
 
   InterfacePtrController.prototype.configureProxyIfNecessary_ = function() {
     if (!this.handle_)
       return;
 
     this.router_ = new router.Router(this.handle_);
     this.handle_ = null;
-    this.router_ .setPayloadValidators([this.interfaceType_.validateResponse]);
 
-    this.controlMessageProxy_ = new
-        controlMessageProxy.ControlMessageProxy(this.router_);
+    this.interfaceEndpointClient_ = new InterfaceEndpointClient(
+        this.router_.createLocalEndpointHandle(types.kMasterInterfaceId),
+        this.router_);
 
-    this.proxy_ = new this.interfaceType_.proxyClass(this.router_);
+    this.interfaceEndpointClient_ .setPayloadValidators([
+        this.interfaceType_.validateResponse]);
+    this.proxy_ = new this.interfaceType_.proxyClass(
+        this.interfaceEndpointClient_);
   };
 
   InterfacePtrController.prototype.queryVersion = function() {
     function onQueryVersion(version) {
       this.version = version;
       return version;
     }
 
     this.configureProxyIfNecessary_();
-    return this.controlMessageProxy_.queryVersion().then(
+    return this.interfaceEndpointClient_.queryVersion().then(
       onQueryVersion.bind(this));
   };
 
   InterfacePtrController.prototype.requireVersion = function(version) {
     this.configureProxyIfNecessary_();
 
     if (this.version >= version) {
       return;
     }
     this.version = version;
-    this.controlMessageProxy_.requireVersion(version);
+    this.interfaceEndpointClient_.requireVersion(version);
   };
 
   // ---------------------------------------------------------------------------
 
   // |request| could be omitted and passed into bind() later.
   //
   // Example:
   //
   //    // FooImpl implements mojom.Foo.
   //    function FooImpl() { ... }
   //    FooImpl.prototype.fooMethod1 = function() { ... }
   //    FooImpl.prototype.fooMethod2 = function() { ... }
   //
   //    var fooPtr = new mojom.FooPtr();
   //    var request = makeRequest(fooPtr);
   //    var binding = new Binding(mojom.Foo, new FooImpl(), request);
   //    fooPtr.fooMethod1();
   function Binding(interfaceType, impl, requestOrHandle) {
     this.interfaceType_ = interfaceType;
     this.impl_ = impl;
     this.router_ = null;
+    this.interfaceEndpointClient_ = null;
     this.stub_ = null;
 
     if (requestOrHandle)
       this.bind(requestOrHandle);
   }
 
   Binding.prototype.isBound = function() {
     return this.router_ !== null;
   };
 
   Binding.prototype.createInterfacePtrAndBind = function() {
     var ptr = new this.interfaceType_.ptrClass();
     // TODO(yzshen): Set the version of the interface pointer.
     this.bind(makeRequest(ptr));
     return ptr;
-  }
+  };
 
   Binding.prototype.bind = function(requestOrHandle) {
     this.close();
 
     var handle = requestOrHandle instanceof types.InterfaceRequest ?
         requestOrHandle.handle : requestOrHandle;
     if (!core.isHandle(handle))
       return;
 
+    this.router_ = new router.Router(handle);
+
     this.stub_ = new this.interfaceType_.stubClass(this.impl_);
-    this.router_ = new router.Router(handle, this.interfaceType_.kVersion);
-    this.router_.setIncomingReceiver(this.stub_);
-    this.router_ .setPayloadValidators([this.interfaceType_.validateRequest]);
+    this.interfaceEndpointClient_ = new InterfaceEndpointClient(
+        this.router_.createLocalEndpointHandle(types.kMasterInterfaceId),
+        this.router_, this.interfaceType_.kVersion);
+    this.interfaceEndpointClient_.setIncomingReceiver(this.stub_);
+    this.interfaceEndpointClient_ .setPayloadValidators([
+        this.interfaceType_.validateRequest]);
   };
 
   Binding.prototype.close = function() {
     if (!this.isBound())
       return;
 
+    if (this.interfaceEndpointClient_) {
+      this.interfaceEndpointClient_.closeWithReason();
+      this.interfaceEndpointClient_ = null;
+    }
+
     this.router_.close();
     this.router_ = null;
     this.stub_ = null;
   };
 
+  Binding.prototype.closeWithReason = function(reason) {
+    if (this.interfaceEndpointClient_) {
+      this.interfaceEndpointClient_.closeWithReason(reason);
+      this.interfaceEndpointClient_ = null;
+    }
+    this.close();
+  };
+
   Binding.prototype.setConnectionErrorHandler
       = function(callback) {
-    if (!this.isBound())
+    if (!this.isBound()) {
       throw new Error("Cannot set connection error handler if not bound.");
-    this.router_.setErrorHandler(callback);
+    }
+    this.interfaceEndpointClient_.setConnectionErrorHandler(callback);
   };
 
   Binding.prototype.unbind = function() {
     if (!this.isBound())
       return new types.InterfaceRequest(null);
 
     var result = new types.InterfaceRequest(this.router_.connector_.handle_);
     this.router_.connector_.handle_ = null;
     this.close();
     return result;
   };
 
-  Binding.prototype.enableTestingMode = function() {
-    return this.router_.enableTestingMode();
+  Binding.prototype.waitForNextMessageForTesting = function() {
+    this.router_.waitForNextMessageForTesting();
   };
 
   // ---------------------------------------------------------------------------
 
   function BindingSetEntry(bindingSet, interfaceType, impl, requestOrHandle,
                            bindingId) {
     this.bindingSet_ = bindingSet;
     this.bindingId_ = bindingId;
     this.binding_ = new Binding(interfaceType, impl, requestOrHandle);
 
@@ skipping 45 matching lines @@
   var exports = {};
   exports.InterfacePtrInfo = types.InterfacePtrInfo;
   exports.InterfaceRequest = types.InterfaceRequest;
   exports.makeRequest = makeRequest;
   exports.InterfacePtrController = InterfacePtrController;
   exports.Binding = Binding;
   exports.BindingSet = BindingSet;
 
   return exports;
 });