JavaScript Content Handler Version 0.0

mojo/apps/js/js_app.h

+// 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.
+
+#ifndef MOJO_APPS_JS_JS_APP_H_
+#define MOJO_APPS_JS_JS_APP_H_
+
+#include "base/memory/ref_counted.h"
+#include "base/single_thread_task_runner.h"
+#include "base/threading/thread.h"
+#include "gin/public/isolate_holder.h"
+#include "gin/shell_runner.h"
+#include "mojo/apps/js/mojo_runner_delegate.h"
+#include "mojo/services/public/interfaces/content_handler/content_handler.mojom.h"
+
+namespace mojo {
+namespace apps {
+
+class JSApp;
+class ApplicationDelegateImpl;
+
+// Adds the "mojo" builtin JS module. Most of the mojo module's methods
+// are defined by JSApp.
+
+class JSAppRunnerDelegate : public MojoRunnerDelegate {

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

Why subclass MojoRunnerDelegate? It looks like all you are using is
AddBuiltinModule() and that is public, so JSApp could just create an instance of
MojoRunnerDelegate and call that method.

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

Good point, I've eliminated the JSAppRunnerDelegate class.l

+ public:
+  JSAppRunnerDelegate(JSApp* js_app);
+};
+
+// Each JavaScript app started by content handler runs on its own thread and
+// in its own V8 isolate. This class represents one running JS app.
+//
+// The lifetime of this class is defined by the content handler's internal
+// "app_vector" list.
+
+class JSApp {
+ public:
+  JSApp(ApplicationDelegateImpl* content_handler_app,
+        const std::string& url,
+        URLResponsePtr content);
+  ~JSApp();
+
+  bool Start();
+  void Quit();
+  Handle ConnectToService(const std::string& application_url,
+                          const std::string& interface_name);
+
+ private:
+  void Run();
+  void Terminate();
+
+  // Used to CHECK that we're running on the correct thread.
+  bool on_content_handler_thread() const;
+  bool on_js_app_thread() const;
+
+  ApplicationDelegateImpl* content_handler_app_;
+  std::string url_;
+  URLResponsePtr content_;
+  base::Thread thread_;
+  scoped_refptr<base::SingleThreadTaskRunner> content_handler_task_runner_;
+  scoped_refptr<base::SingleThreadTaskRunner> js_app_task_runner_;
+  JSAppRunnerDelegate runner_delegate_;
+  scoped_ptr<gin::IsolateHolder> isolate_holder_;
+  scoped_ptr<gin::ShellRunner> shell_runner_;
+
+  DISALLOW_COPY_AND_ASSIGN(JSApp);
+};
+
+}  // namespace apps
+}  // namespace mojo
+
+#endif  // MOJO_APPS_JS_JS_APP_H_