JavaScript Content Handler Version 0.0

mojo/apps/js/mojo_module.cc

Index: mojo/apps/js/mojo_module.cc
diff --git a/mojo/apps/js/mojo_module.cc b/mojo/apps/js/mojo_module.cc
new file mode 100644
index 0000000000000000000000000000000000000000..af8dd7023e0670e11f16982ba6b90e7a4b0d8dad
--- /dev/null
+++ b/mojo/apps/js/mojo_module.cc
@@ -0,0 +1,63 @@
+// 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.
+
+#include "mojo/apps/js/mojo_module.h"
+
+#include "gin/arguments.h"
+#include "gin/converter.h"
+#include "gin/object_template_builder.h"
+#include "gin/per_isolate_data.h"
+#include "mojo/apps/js/js_app.h"
+#include "mojo/apps/js/mojo_module.h"
+#include "mojo/bindings/js/handle.h"
+#include "mojo/common/data_pipe_utils.h"
+
+namespace mojo {
+namespace apps {
+
+namespace {
+
+// TODO(hansmuller): define a new gin nullable string type for the return value.
+std::string CopyToString(const gin::Arguments& args, Handle source) {
+  // TODO(hansmuller); if !pipe.is_valid() throw an error.
+  DataPipeConsumerHandle handle(source.value());
+  ScopedDataPipeConsumerHandle scoped_handle(handle);
+  std::string result;
+  if (mojo::common::BlockingCopyToString(scoped_handle.Pass(), &result))
+    return result;
+
+  args.isolate()->ThrowException(v8::Exception::Error(
+      gin::StringToV8(args.isolate(), "unable to read data pipe")));
+  return "";
+}
+
+gin::WrapperInfo g_wrapper_info = {gin::kEmbedderNativeGin};
+
+}  // namespace
+
+const char Mojo::kModuleName[] = "mojo";

[Aaron Boodman, 2014/09/11 05:24:53]

This is not used.

[hansmuller, 2014/09/11 16:44:44]

It's used by the mojo AddBuiltinModule() call, which is now in the JSApp
constructor body.

+
+v8::Local<v8::Value> Mojo::GetModule(JSApp* js_app, v8::Isolate* isolate) {
+  gin::PerIsolateData* data = gin::PerIsolateData::From(isolate);
+  v8::Local<v8::ObjectTemplate> templ =
+      data->GetObjectTemplate(&g_wrapper_info);
+
+  // The lifetime of the the js_app is managed by the content_handler_app_.
+  if (templ.IsEmpty()) {
+    templ = gin::ObjectTemplateBuilder(isolate)
+                .SetMethod("connectToService",
+                           base::Bind(&JSApp::ConnectToService,
+                                      base::Unretained(js_app)))
+                .SetMethod("copyToString", CopyToString)
+                .SetMethod("quit",
+                           base::Bind(&JSApp::Quit, base::Unretained(js_app)))
+                .Build();
+    data->SetObjectTemplate(&g_wrapper_info, templ);
+  }
+
+  return templ->NewInstance();
+}
+
+}  // namespace apps
+}  // namespace mojo