Cancel any pending speech recognitions when the dispatcher host terminates.

chrome/browser/speech/speech_input_manager.cc

 // Copyright (c) 2010 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.
 
 #include "chrome/browser/speech/speech_input_manager.h"
 
 #include <map>
 #include <string>
 
 #include "app/l10n_util.h"
@@ skipping 84 matching lines @@
   // SpeechInputManager methods.
   virtual void StartRecognition(SpeechInputManagerDelegate* delegate,
                                 int caller_id,
                                 int render_process_id,
                                 int render_view_id,
                                 const gfx::Rect& element_rect,
                                 const std::string& language,
                                 const std::string& grammar);
   virtual void CancelRecognition(int caller_id);
   virtual void StopRecording(int caller_id);
+  virtual void CancelAllRequestsWithDelegate(
+      SpeechInputManagerDelegate* delegate);
 
   // SpeechRecognizer::Delegate methods.
   virtual void SetRecognitionResult(int caller_id,
                                     bool error,
                                     const SpeechInputResultArray& result);
   virtual void DidCompleteRecording(int caller_id);
   virtual void DidCompleteRecognition(int caller_id);
   virtual void OnRecognizerError(int caller_id,
                                  SpeechRecognizer::ErrorCode error);
   virtual void DidCompleteEnvironmentEstimation(int caller_id);
@@ skipping 132 matching lines @@
 void SpeechInputManagerImpl::CancelRecognition(int caller_id) {
   DCHECK(HasPendingRequest(caller_id));
   if (requests_[caller_id].is_active)
     requests_[caller_id].recognizer->CancelRecognition();
   requests_.erase(caller_id);
   if (recording_caller_id_ == caller_id)
     recording_caller_id_ = 0;
   bubble_controller_->CloseBubble(caller_id);
 }
 
+void SpeechInputManagerImpl::CancelAllRequestsWithDelegate(
+    SpeechInputManagerDelegate* delegate) {
+  SpeechRecognizerMap::iterator it = requests_.begin();
+  while (it != requests_.end()) {
+    if (it->second.delegate == delegate) {
+      CancelRecognition(it->first);
+      // This map will have very few elements so it is simpler to restart.
+      it = requests_.begin();
+    } else {
+      ++it;
+    }
+  }
+}
+
 void SpeechInputManagerImpl::StopRecording(int caller_id) {
   DCHECK(HasPendingRequest(caller_id));
   requests_[caller_id].recognizer->StopRecording();
 }
 
 void SpeechInputManagerImpl::SetRecognitionResult(
     int caller_id, bool error, const SpeechInputResultArray& result) {
   DCHECK(HasPendingRequest(caller_id));
   GetDelegate(caller_id)->SetRecognitionResult(caller_id, result);
 }
@@ skipping 87 matching lines @@
     // to the user, abort it since user has switched focus. Otherwise
     // recognition has started and keep that going so user can start speaking to
     // another element while this gets the results in parallel.
     if (recording_caller_id_ == caller_id || !requests_[caller_id].is_active) {
       CancelRecognitionAndInformDelegate(caller_id);
     }
   }
 }
 
 }  // namespace speech_input