Introduced SpeechRecognitionDispatcher(Host) classes, handling dispatch of IPC messages for continu…

content/renderer/speech_recognition_dispatcher.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.
+
+#ifndef CONTENT_RENDERER_SPEECH_RECOGNITION_DISPATCHER_H_
+#define CONTENT_RENDERER_SPEECH_RECOGNITION_DISPATCHER_H_

[hans, 2012/05/11 16:56:32]

#pragma once :)

[Primiano Tucci (use gerrit), 2012/05/14 12:58:22]

Again!

+
+#include <map>
+
+#include "base/basictypes.h"
+#include "content/public/renderer/render_view_observer.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebVector.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebSpeechRecognitionHandle.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebSpeechRecognizer.h"
+
+class RenderViewImpl;
+
+namespace content {
+struct SpeechRecognitionError;
+struct SpeechRecognitionResult;
+}
+
+namespace WebKit {
+class WebSpeechRecognitionParams;
+class WebSpeechRecognizerClient;
+}
+
+// SpeechRecognitionDispatcher is a delegate for messages used by WebKit for
+// scripted JS speech APIs. It's the complement of
+// SpeechRecognitionDispatcherHost (owned by RenderViewHost).
+class SpeechRecognitionDispatcher : public content::RenderViewObserver,
+                                    public WebKit::WebSpeechRecognizer {
+ public:
+  SpeechRecognitionDispatcher(RenderViewImpl* render_view);
+  virtual ~SpeechRecognitionDispatcher();
+
+ private:
+  // RenderView::Observer implementation.
+  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
+
+  // WebKit::WebSpeechRecognizer implementation.
+  virtual void start(const WebKit::WebSpeechRecognitionHandle&,
+                     const WebKit::WebSpeechRecognitionParams&,
+                     WebKit::WebSpeechRecognizerClient*) OVERRIDE;
+  virtual void stop(const WebKit::WebSpeechRecognitionHandle&,
+                    WebKit::WebSpeechRecognizerClient*) OVERRIDE;
+  virtual void abort(const WebKit::WebSpeechRecognitionHandle&,
+                     WebKit::WebSpeechRecognizerClient*) OVERRIDE;
+
+  void OnRecognitionStarted(int js_handle_id);
+  void OnAudioStarted(int js_handle_id);
+  void OnSoundStarted(int js_handle_id);
+  void OnSoundEnded(int js_handle_id);
+  void OnAudioEnded(int js_handle_id);
+  void OnErrorOccurred(int js_handle_id,
+                       const content::SpeechRecognitionError& error);
+  void OnRecognitionEnded(int js_handle_id);
+  void OnResultRetrieved(int js_handle_id,
+                         const content::SpeechRecognitionResult& result);
+  int GetIDForHandle(const WebKit::WebSpeechRecognitionHandle& handle);

[hans, 2012/05/11 16:56:32]

i'd put a blank before this to separate from the On* functions

[Primiano Tucci (use gerrit), 2012/05/14 12:58:22]

Right!

+  const WebKit::WebSpeechRecognitionHandle& GetHandleFromID(int handle_id);
+
+  WebKit::WebSpeechRecognizerClient* event_proxy_;

[hans, 2012/05/11 16:56:32]

hmm, i'd just call it recognizer_client_, and maybe add a comment that this is
the client that we'll send events back to,or something like that

[Primiano Tucci (use gerrit), 2012/05/14 12:58:22]

Right and it fits better the ClassName -> instance_name pattern.

+  typedef std::map<int, WebKit::WebSpeechRecognitionHandle> HandleMap;
+  HandleMap handle_mappings_;

[hans, 2012/05/11 16:56:32]

or just handle_map_

[Primiano Tucci (use gerrit), 2012/05/14 12:58:22]

Done.

+  int last_mapping_id_;
+
+  DISALLOW_COPY_AND_ASSIGN(SpeechRecognitionDispatcher);
+};
+
+#endif  // CONTENT_RENDERER_SPEECH_RECOGNITION_DISPATCHER_H_