Dart: Futures -> Callbacks.

mojo/dart/packages/mojo_services/lib/vsync/vsync.mojom.dart

 // 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.
 
 library vsync_mojom;
 import 'dart:async';
 import 'package:mojo/bindings.dart' as bindings;
 import 'package:mojo/core.dart' as core;
 import 'package:mojo/mojo/bindings/types/service_describer.mojom.dart' as service_describer;
 
 
 
 class _VSyncProviderAwaitVSyncParams extends bindings.Struct {
   static const List<bindings.StructDataHeader> kVersions = const [
     const bindings.StructDataHeader(8, 0)
   ];
 
   _VSyncProviderAwaitVSyncParams() : super(kVersions.last.size);
 
+  _VSyncProviderAwaitVSyncParams.init(
+  ) : super(kVersions.last.size);
+
   static _VSyncProviderAwaitVSyncParams deserialize(bindings.Message message) {
     var decoder = new bindings.Decoder(message);
     var result = decode(decoder);
     if (decoder.excessHandles != null) {
       decoder.excessHandles.forEach((h) => h.close());
     }
     return result;
   }
 
   static _VSyncProviderAwaitVSyncParams decode(bindings.Decoder decoder0) {
@@ skipping 39 matching lines @@
 
 
 class VSyncProviderAwaitVSyncResponseParams extends bindings.Struct {
   static const List<bindings.StructDataHeader> kVersions = const [
     const bindings.StructDataHeader(16, 0)
   ];
   int timeStamp = 0;
 
   VSyncProviderAwaitVSyncResponseParams() : super(kVersions.last.size);
 
+  VSyncProviderAwaitVSyncResponseParams.init(
+    int this.timeStamp
+  ) : super(kVersions.last.size);
+
   static VSyncProviderAwaitVSyncResponseParams deserialize(bindings.Message message) {
     var decoder = new bindings.Decoder(message);
     var result = decode(decoder);
     if (decoder.excessHandles != null) {
       decoder.excessHandles.forEach((h) => h.close());
     }
     return result;
   }
 
   static VSyncProviderAwaitVSyncResponseParams decode(bindings.Decoder decoder0) {
@@ skipping 46 matching lines @@
   Map toJson() {
     Map map = new Map();
     map["timeStamp"] = timeStamp;
     return map;
   }
 }
 
 const int _vSyncProviderMethodAwaitVSyncName = 0;
 
 class _VSyncProviderServiceDescription implements service_describer.ServiceDescription {
-  dynamic getTopLevelInterface([Function responseFactory]) =>
-      responseFactory(null);
+  void getTopLevelInterface(Function responder) {
+    responder(null);
+  }
 
-  dynamic getTypeDefinition(String typeKey, [Function responseFactory]) =>
-      responseFactory(null);
+  void getTypeDefinition(String typeKey, Function responder) {
+    responder(null);
+  }
 
-  dynamic getAllTypeDefinitions([Function responseFactory]) =>
-      responseFactory(null);
+  void getAllTypeDefinitions(Function responder) {
+    responder(null);
+  }
 }
 
 abstract class VSyncProvider {
   static const String serviceName = "vsync::VSyncProvider";
 
   static service_describer.ServiceDescription _cachedServiceDescription;
   static service_describer.ServiceDescription get serviceDescription {
     if (_cachedServiceDescription == null) {
       _cachedServiceDescription = new _VSyncProviderServiceDescription();
     }
     return _cachedServiceDescription;
   }
 
   static VSyncProviderProxy connectToService(
       bindings.ServiceConnector s, String url, [String serviceName]) {
     VSyncProviderProxy p = new VSyncProviderProxy.unbound();
     String name = serviceName ?? VSyncProvider.serviceName;
     if ((name == null) || name.isEmpty) {
       throw new core.MojoApiError(
           "If an interface has no ServiceName, then one must be provided.");
     }
     s.connectToService(url, p, name);
     return p;
   }
-  dynamic awaitVSync([Function responseFactory = null]);
+  void awaitVSync(void callback(int timeStamp));
 }
 
 abstract class VSyncProviderInterface
     implements bindings.MojoInterface<VSyncProvider>,
                VSyncProvider {
   factory VSyncProviderInterface([VSyncProvider impl]) =>
       new VSyncProviderStub.unbound(impl);
 
   factory VSyncProviderInterface.fromEndpoint(
       core.MojoMessagePipeEndpoint endpoint,
@@ skipping 29 matching lines @@
 
   void handleResponse(bindings.ServiceMessage message) {
     switch (message.header.type) {
       case _vSyncProviderMethodAwaitVSyncName:
         var r = VSyncProviderAwaitVSyncResponseParams.deserialize(
             message.payload);
         if (!message.header.hasRequestId) {
           proxyError("Expected a message with a valid request Id.");
           return;
         }
-        Completer c = completerMap[message.header.requestId];
-        if (c == null) {
+        Function callback = callbackMap[message.header.requestId];
+        if (callback == null) {
           proxyError(
               "Message had unknown request Id: ${message.header.requestId}");
           return;
         }
-        completerMap.remove(message.header.requestId);
-        if (c.isCompleted) {
-          proxyError("Response completer already completed");
-          return;
-        }
-        c.complete(r);
+        callbackMap.remove(message.header.requestId);
+        callback(r.timeStamp );
         break;
       default:
         proxyError("Unexpected message type: ${message.header.type}");
         close(immediate: true);
         break;
     }
   }
 
   @override
   String toString() {
@@ skipping 24 matching lines @@
     return newMockedProxy;
   }
 
   static VSyncProviderProxy newFromEndpoint(
       core.MojoMessagePipeEndpoint endpoint) {
     assert(endpoint.setDescription("For VSyncProviderProxy"));
     return new VSyncProviderProxy.fromEndpoint(endpoint);
   }
 
 
-  dynamic awaitVSync([Function responseFactory = null]) {
+  void awaitVSync(void callback(int timeStamp)) {
     if (impl != null) {
-      return new Future(() => impl.awaitVSync(_VSyncProviderStubControl._vSyncProviderAwaitVSyncResponseParamsFactory));
+      impl.awaitVSync(callback);
+      return;
     }
     var params = new _VSyncProviderAwaitVSyncParams();
-    return ctrl.sendMessageWithRequestId(
+    ctrl.sendMessageWithRequestId(
         params,
         _vSyncProviderMethodAwaitVSyncName,
         -1,
-        bindings.MessageHeader.kMessageExpectsResponse);
+        bindings.MessageHeader.kMessageExpectsResponse,
+        callback);
   }
 }
 
 class _VSyncProviderStubControl
     extends bindings.StubMessageHandler
     implements bindings.StubControl<VSyncProvider> {
   VSyncProvider _impl;
 
   _VSyncProviderStubControl.fromEndpoint(
       core.MojoMessagePipeEndpoint endpoint, [VSyncProvider impl])
       : super.fromEndpoint(endpoint, autoBegin: impl != null) {
     _impl = impl;
   }
 
   _VSyncProviderStubControl.fromHandle(
       core.MojoHandle handle, [VSyncProvider impl])
       : super.fromHandle(handle, autoBegin: impl != null) {
     _impl = impl;
   }
 
   _VSyncProviderStubControl.unbound([this._impl]) : super.unbound();
 
   String get serviceName => VSyncProvider.serviceName;
 
 
-  static VSyncProviderAwaitVSyncResponseParams _vSyncProviderAwaitVSyncResponseParamsFactory(int timeStamp) {
-    var result = new VSyncProviderAwaitVSyncResponseParams();
-    result.timeStamp = timeStamp;
-    return result;
+  Function _vSyncProviderAwaitVSyncResponseParamsResponder(
+      int requestId) {
+  return (int timeStamp) {
+      var result = new VSyncProviderAwaitVSyncResponseParams();
+      result.timeStamp = timeStamp;
+      sendResponse(buildResponseWithId(
+          result,
+          _vSyncProviderMethodAwaitVSyncName,
+          requestId,
+          bindings.MessageHeader.kMessageIsResponse));
+    };
   }
 
-  dynamic handleMessage(bindings.ServiceMessage message) {
+  void handleMessage(bindings.ServiceMessage message) {
     if (bindings.ControlMessageHandler.isControlMessage(message)) {
-      return bindings.ControlMessageHandler.handleMessage(this,
-                                                          0,
-                                                          message);
+      bindings.ControlMessageHandler.handleMessage(
+          this, 0, message);
+      return;
     }
     if (_impl == null) {
       throw new core.MojoApiError("$this has no implementation set");
     }
     switch (message.header.type) {
       case _vSyncProviderMethodAwaitVSyncName:
-        var response = _impl.awaitVSync(_vSyncProviderAwaitVSyncResponseParamsFactory);
-        if (response is Future) {
-          return response.then((response) {
-            if (response != null) {
-              return buildResponseWithId(
-                  response,
-                  _vSyncProviderMethodAwaitVSyncName,
-                  message.header.requestId,
-                  bindings.MessageHeader.kMessageIsResponse);
-            }
-          });
-        } else if (response != null) {
-          return buildResponseWithId(
-              response,
-              _vSyncProviderMethodAwaitVSyncName,
-              message.header.requestId,
-              bindings.MessageHeader.kMessageIsResponse);
-        }
+        _impl.awaitVSync(_vSyncProviderAwaitVSyncResponseParamsResponder(message.header.requestId));
         break;
       default:
         throw new bindings.MojoCodecError("Unexpected message name");
         break;
     }
-    return null;
   }
 
   VSyncProvider get impl => _impl;
   set impl(VSyncProvider d) {
     if (d == null) {
       throw new core.MojoApiError("$this: Cannot set a null implementation");
     }
     if (isBound && (_impl == null)) {
       beginHandlingEvents();
     }
@@ skipping 33 matching lines @@
       core.MojoHandle handle, [VSyncProvider impl])
       : super(new _VSyncProviderStubControl.fromHandle(handle, impl));
 
   static VSyncProviderStub newFromEndpoint(
       core.MojoMessagePipeEndpoint endpoint) {
     assert(endpoint.setDescription("For VSyncProviderStub"));
     return new VSyncProviderStub.fromEndpoint(endpoint);
   }
 
 
-  dynamic awaitVSync([Function responseFactory = null]) {
-    return impl.awaitVSync(responseFactory);
+  void awaitVSync(void callback(int timeStamp)) {
+    return impl.awaitVSync(callback);
   }
 }