speech_recognition_manager_delegate.h revision 7dbb3d5cf0c15f500944d211057644d6a2f37371 
1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef CONTENT_PUBLIC_BROWSER_SPEECH_RECOGNITION_MANAGER_DELEGATE_H_
6#define CONTENT_PUBLIC_BROWSER_SPEECH_RECOGNITION_MANAGER_DELEGATE_H_
7
8#include <string>
9
10#include "base/callback_forward.h"
11#include "content/public/common/speech_recognition_error.h"
12
13namespace content {
14
15class SpeechRecognitionEventListener;
16struct SpeechRecognitionResult;
17
18// Allows embedders to display the current state of recognition, for getting the
19// user's permission and for fetching optional request information.
20class SpeechRecognitionManagerDelegate {
21 public:
22  virtual ~SpeechRecognitionManagerDelegate() {}
23
24  // Get the optional diagnostic hardware information if available.
25  // This is called on the IO thread.
26  virtual void GetDiagnosticInformation(bool* can_report_metrics,
27                                        std::string* hardware_info) = 0;
28
29  // Checks (asynchronously) if current setup allows speech recognition.
30  // This is called on the IO thread.
31  virtual void CheckRecognitionIsAllowed(
32      int session_id,
33      base::Callback<void(bool ask_user, bool is_allowed)> callback) = 0;
34
35  // Checks whether the delegate is interested (returning a non NULL ptr) or not
36  // (returning NULL) in receiving a copy of all sessions events.
37  // This is called on the IO thread.
38  virtual SpeechRecognitionEventListener* GetEventListener() = 0;
39
40  // Checks whether the speech recognition for the given renderer should filter
41  // profanities or not.
42  virtual bool FilterProfanities(int render_process_id) = 0;
43};
44
45}  // namespace content
46
47#endif  // CONTENT_PUBLIC_BROWSER_SPEECH_RECOGNITION_MANAGER_DELEGATE_H_
48