[Chromoting] Let the Windows IT2Me host send clipboard events to the client.

remoting/protocol/clipboard_thread_proxy.h

+// Copyright (c) 2012 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.
+
+// ClipboardThreadProxy is used to allow a Clipboard on the UI thread to invoke
+// a ClipboardStub on the network thread.
+
+#ifndef REMOTING_PROTOCOL_CLIPBOARD_THREAD_PROXY_H_
+#define REMOTING_PROTOCOL_CLIPBOARD_THREAD_PROXY_H_
+
+#include "base/memory/weak_ptr.h"
+#include "base/task_runner.h"
+#include "remoting/protocol/clipboard_stub.h"
+
+namespace base {
+class MessageLoopProxy;
+}  // namespace base
+
+namespace remoting {
+namespace protocol {
+
+class ClipboardThreadProxy : public ClipboardStub {
+ public:
+  virtual ~ClipboardThreadProxy();
+
+  // Constructs a proxy for |clipboard_stub| which will trampoline invocations
+  // to |clipboard_stub_task_runner|.
+  ClipboardThreadProxy(
+      const base::WeakPtr<ClipboardStub>& clipboard_stub,
+      scoped_refptr<base::TaskRunner> clipboard_stub_task_runner);
+
+  // ClipboardStub implementation.
+  virtual void InjectClipboardEvent(const ClipboardEvent& event) OVERRIDE;
+
+ private:
+  // Injects a clipboard event into a stub, if the given weak pointer to the
+  // stub is valid.
+  static void InjectClipboardEventStatic(
+      const base::WeakPtr<ClipboardStub>& clipboard_stub,
+      const ClipboardEvent& event);
+
+  base::WeakPtr<ClipboardStub> clipboard_stub_;
+  scoped_refptr<base::TaskRunner> clipboard_stub_task_runner_;
+
+  DISALLOW_COPY_AND_ASSIGN(ClipboardThreadProxy);
+};
+
+}  // namespace protocol
+}  // namespace remoting
+
+#endif  // REMOTING_PROTOCOL_CLIPBOARD_THREAD_PROXY_H_