Serialize a subset of WebInputEvents to protobufs.

blimp/net/input_message_generator.h

+// Copyright 2015 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 BLIMP_NET_INPUT_MESSAGE_GENERATOR_H_
+#define BLIMP_NET_INPUT_MESSAGE_GENERATOR_H_
+
+#include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
+#include "blimp/net/blimp_net_export.h"
+#include "net/base/completion_callback.h"
+
+namespace blink {
+class WebInputEvent;
+}
+
+namespace blimp {
+
+class BlimpMessage;
+class BlimpMessageProcessor;
+
+// Handles creating serialized InputMessage protos from a stream of
+// WebInputEvents.  This class may be stateful to optimize the size of the
+// serialized transmission data.  See InputMessageProcessor for the deserialize
+// code.
+class BLIMP_NET_EXPORT InputMessageGenerator {
+ public:
+  InputMessageGenerator();
+  ~InputMessageGenerator();
+
+  // Builds a BlimpMessage from |event| that has the basic input event fields
+  // populated.  This might make use of state sent from previous
+  // BlimpMessage::INPUT messages.  It is up to the caller to populate the
+  // non-input fields and to send the BlimpMessage.
+  scoped_ptr<BlimpMessage> GenerateMessage(const blink::WebInputEvent& event);
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(InputMessageGenerator);
+};
+
+}  // namespace blimp
+
+#endif  // BLIMP_NET_INPUT_MESSAGE_GENERATOR_H_