Index: mojo/public/js/bindings.js |
diff --git a/mojo/public/js/bindings.js b/mojo/public/js/bindings.js |
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+// 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/router", |
+], function(router) { |
+ |
+ var Router = router.Router; |
+ |
+ var kProxyProperties = Symbol("proxyProperties"); |
+ var kStubProperties = Symbol("stubProperties"); |
+ |
+ // Public proxy class properties that are managed at runtime by the JS |
+ // bindings. See ProxyBindings below. |
+ function ProxyProperties(receiver) { |
+ this.receiver = receiver; |
+ } |
+ |
+ ProxyProperties.prototype.getLocalDelegate = function() { |
+ return this.local && StubBindings(this.local).delegate; |
+ } |
+ |
+ ProxyProperties.prototype.setLocalDelegate = function(impl) { |
+ if (this.local) |
+ StubBindings(this.local).delegate = impl; |
+ else |
+ throw new Error("no stub object"); |
+ } |
+ |
+ // Public stub class properties that are managed at runtime by the JS |
+ // bindings. See StubBindings below. |
+ function StubProperties(delegate) { |
+ this.delegate = delegate; |
+ } |
+ |
+ // The base class for generated proxy classes. |
+ function ProxyBase(receiver) { |
+ this[kProxyProperties] = new ProxyProperties(receiver); |
+ |
+ // TODO(hansmuller): Temporary, for Chrome backwards compatibility. |
+ if (receiver instanceof Router) |
+ this.receiver_ = receiver; |
+ } |
+ |
+ // The base class for generated stub classes. |
+ function StubBase(delegate) { |
+ this[kStubProperties] = new StubProperties(delegate); |
+ } |
+ |
+ // Provides access to properties added to a proxy object without risking |
+ // Mojo interface name collisions. Unless otherwise specified, the initial |
+ // value of all properties is undefined. |
+ // |
+ // ProxyBindings(proxy).connection - The Connection object that links the |
+ // proxy for a remote Mojo service to an optional local stub for a local |
+ // service. The value of ProxyBindings(proxy).connection.remote == proxy. |
+ // |
+ // ProxyBindings(proxy).local - The "local" stub object whose delegate |
+ // implements the proxy's Mojo client interface. |
+ // |
+ // ProxyBindings(proxy).setLocalDelegate(impl) - Sets the implementation |
+ // delegate of the proxy's client stub object. This is just shorthand |
+ // for |StubBindings(ProxyBindings(proxy).local).delegate = impl|. |
+ // |
+ // ProxyBindings(proxy).getLocalDelegate() - Returns the implementation |
+ // delegate of the proxy's client stub object. This is just shorthand |
+ // for |StubBindings(ProxyBindings(proxy).local).delegate|. |
+ |
+ function ProxyBindings(proxy) { |
+ return (proxy instanceof ProxyBase) ? proxy[kProxyProperties] : proxy; |
+ } |
+ |
+ // Provides access to properties added to a stub object without risking |
+ // Mojo interface name collisions. Unless otherwise specified, the initial |
+ // value of all properties is undefined. |
+ // |
+ // StubBindings(stub).delegate - The optional implementation delegate for |
+ // the Mojo interface stub. |
+ // |
+ // StubBindings(stub).connection - The Connection object that links an |
+ // optional proxy for a remote service to this stub. The value of |
+ // StubBindings(stub).connection.local == stub. |
+ // |
+ // StubBindings(stub).remote - A proxy for the the stub's Mojo client |
+ // service. |
+ |
+ function StubBindings(stub) { |
+ return stub instanceof StubBase ? stub[kStubProperties] : stub; |
+ } |
+ |
+ var exports = {}; |
+ exports.EmptyProxy = ProxyBase; |
+ exports.EmptyStub = StubBase; |
+ exports.ProxyBase = ProxyBase; |
+ exports.ProxyBindings = ProxyBindings; |
+ exports.StubBase = StubBase; |
+ exports.StubBindings = StubBindings; |
+ return exports; |
+}); |