Speech refactoring: Reimplemented SpeechRecognitionManagerImpl as a FSM. (CL1.7)

chrome/browser/speech/chrome_speech_recognition_manager_delegate.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 CHROME_BROWSER_SPEECH_CHROME_SPEECH_RECOGNITION_MANAGER_DELEGATE_H_
 #define CHROME_BROWSER_SPEECH_CHROME_SPEECH_RECOGNITION_MANAGER_DELEGATE_H_
 
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "chrome/browser/speech/speech_recognition_bubble_controller.h"
 #include "content/public/browser/speech_recognition_manager_delegate.h"
 
+namespace base {
+class WaitableEvent;
+}
+
 namespace speech {
 
-// This is Chrome's implementation of the SpeechRecognitionManager interface.
-// This class is a singleton and accessed via the Get method.
+// This is Chrome's implementation of the SpeechRecognitionManagerDelegate
+// interface.
 class ChromeSpeechRecognitionManagerDelegate
     : NON_EXPORTED_BASE(public content::SpeechRecognitionManagerDelegate),
       public SpeechRecognitionBubbleControllerDelegate {
  public:
   ChromeSpeechRecognitionManagerDelegate();
   virtual ~ChromeSpeechRecognitionManagerDelegate();
 
   // SpeechRecognitionBubbleControllerDelegate methods.
   virtual void InfoBubbleButtonClicked(
       int session_id, SpeechRecognitionBubble::Button button) OVERRIDE;
   virtual void InfoBubbleFocusChanged(int session_id) OVERRIDE;
 
  protected:
   // SpeechRecognitionManagerDelegate methods.
-  virtual void GetRequestInfo(bool* can_report_metrics,
-                              std::string* request_info) OVERRIDE;
-  virtual void ShowRecognitionRequested(int session_id,
-                                        int render_process_id,
-                                        int render_view_id,
-                                        const gfx::Rect& element_rect) OVERRIDE;
+  virtual void GetDiagnosticInformation(bool* can_report_metrics,
+                                        std::string* hardware_info) OVERRIDE;
+  virtual bool IsRecognitionAllowed(int session_id) OVERRIDE;
+  virtual void ShowRecognitionRequested(int session_id) OVERRIDE;
   virtual void ShowWarmUp(int session_id) OVERRIDE;
   virtual void ShowRecognizing(int session_id) OVERRIDE;
   virtual void ShowRecording(int session_id) OVERRIDE;
   virtual void ShowInputVolume(int session_id,
                                float volume,
                                float noise_volume) OVERRIDE;
-  virtual void ShowMicError(int session_id,
-                            MicError error) OVERRIDE;
-  virtual void ShowRecognizerError(
-      int session_id, content::SpeechRecognitionErrorCode error) OVERRIDE;
+  virtual void ShowError(int session_id,
+                         const content::SpeechRecognitionError& error) OVERRIDE;
   virtual void DoClose(int session_id) OVERRIDE;
 
  private:
   class OptionalRequestInfo;
 
+  // Checks for VIEW_TYPE_WEB_CONTENTS host in the UI thread and notifies back
+  // completion through |event| (to IsRecognitionAllowed in the IO thread).
+  static void CheckRenderViewType(int render_process_id,
+                                  int render_view_id,
+                                  bool* result,
+                                  base::WaitableEvent* event);
+
   scoped_refptr<SpeechRecognitionBubbleController> bubble_controller_;
   scoped_refptr<OptionalRequestInfo> optional_request_info_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeSpeechRecognitionManagerDelegate);
 };
 
 }  // namespace speech
 
 #endif  // CHROME_BROWSER_SPEECH_CHROME_SPEECH_RECOGNITION_MANAGER_DELEGATE_H_