SpeechInputExtensionManager now interface with SpeechRecognitionManagerDelegate

chrome/browser/speech/chrome_speech_recognition_manager_delegate.cc

 // 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.
 
 #include "chrome/browser/speech/chrome_speech_recognition_manager_delegate.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/synchronization/lock.h"
 #include "base/threading/thread_restrictions.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile_manager.h"
+#include "chrome/browser/speech/speech_recognition_tray_icon_controller.h"
 #include "chrome/browser/tab_contents/tab_util.h"
 #include "chrome/browser/view_type_utils.h"
 #include "chrome/common/pref_names.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/resource_context.h"
 #include "content/public/browser/speech_recognition_manager.h"
 #include "content/public/browser/speech_recognition_session_config.h"
 #include "content/public/browser/speech_recognition_session_context.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/speech_recognition_error.h"
 #include "content/public/common/speech_recognition_result.h"
 #include "grit/generated_resources.h"
 #include "net/url_request/url_request_context_getter.h"
 #include "ui/base/l10n/l10n_util.h"
 
 #if defined(OS_WIN)
 #include "chrome/installer/util/wmi.h"
 #endif
 
 using content::BrowserThread;
 using content::SpeechRecognitionManager;
 using content::WebContents;
+using content::SpeechRecognitionSessionContext;
 
 namespace {
 const int kNoActiveBubble =
     content::SpeechRecognitionManager::kSessionIDInvalid;
+
+bool RequiresBubble(int session_id) {
+  return SpeechRecognitionManager::GetInstance()->
+      GetSessionContext(session_id).requested_by_page_element;
+}
+
+bool RequiresTrayIcon(int session_id) {
+  return !RequiresBubble(session_id);
+}
 }  // namespace
 
 namespace speech {
 
 // Asynchronously fetches the PC and audio hardware/driver info if
 // the user has opted into UMA. This information is sent with speech input
 // requests to the server for identifying and improving quality issues with
 // specific device configurations.
 class ChromeSpeechRecognitionManagerDelegate::OptionalRequestInfo
     : public base::RefCountedThreadSafe<OptionalRequestInfo> {
@@ skipping 48 matching lines @@
   ~OptionalRequestInfo() {}
 
   base::Lock lock_;
   std::string value_;
   bool can_report_metrics_;
 
   DISALLOW_COPY_AND_ASSIGN(OptionalRequestInfo);
 };
 
 ChromeSpeechRecognitionManagerDelegate::ChromeSpeechRecognitionManagerDelegate()
-    : bubble_controller_(new SpeechRecognitionBubbleController(
-          ALLOW_THIS_IN_INITIALIZER_LIST(this))),
-      active_bubble_session_id_(kNoActiveBubble) {
+    : active_bubble_session_id_(kNoActiveBubble) {
 }
 
 ChromeSpeechRecognitionManagerDelegate::
     ~ChromeSpeechRecognitionManagerDelegate() {
+  if (tray_icon_controller_.get())
+    tray_icon_controller_->Hide();
+  if (active_bubble_session_id_ != kNoActiveBubble) {
+    DCHECK(bubble_controller_.get());
+    bubble_controller_->CloseBubble(active_bubble_session_id_);
+  }
 }
 
 void ChromeSpeechRecognitionManagerDelegate::InfoBubbleButtonClicked(
     int session_id, SpeechRecognitionBubble::Button button) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   DCHECK_EQ(active_bubble_session_id_, session_id);
 
+  // Note, the session might have been destroyed, therefore avoid calls to the
+  // manager which imply its existance (e.g., GetSessionContext()).
+
   if (button == SpeechRecognitionBubble::BUTTON_CANCEL) {
-    bubble_controller_->CloseBubble(session_id);
+    GetBubbleController()->CloseBubble(session_id);
     last_session_config_.reset();
     active_bubble_session_id_ = kNoActiveBubble;
 
     // We can safely call AbortSession even if the session has already ended,
     // the manager's public methods are reliable and will handle it properly.
     SpeechRecognitionManager::GetInstance()->AbortSession(session_id);
   } else if (button == SpeechRecognitionBubble::BUTTON_TRY_AGAIN) {
-    bubble_controller_->CloseBubble(session_id);
+    GetBubbleController()->CloseBubble(session_id);
     active_bubble_session_id_ = kNoActiveBubble;
     RestartLastSession();
   }
 }
 
 void ChromeSpeechRecognitionManagerDelegate::InfoBubbleFocusChanged(
     int session_id) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   DCHECK_EQ(active_bubble_session_id_, session_id);
 
-  bubble_controller_->CloseBubble(session_id);
+  // Note, the session might have been destroyed, therefore avoid calls to the
+  // manager which imply its existance (e.g., GetSessionContext()).
+
+  GetBubbleController()->CloseBubble(session_id);
   last_session_config_.reset();
   active_bubble_session_id_ = kNoActiveBubble;
 
   // If the user clicks outside the bubble while capturing audio we abort the
   // session. Otherwise, i.e. audio capture is ended and we are just waiting for
   // results, this activity is carried silently in background.
   if (SpeechRecognitionManager::GetInstance()->IsCapturingAudio())
     SpeechRecognitionManager::GetInstance()->AbortSession(session_id);
 }
 
 void ChromeSpeechRecognitionManagerDelegate::RestartLastSession() {
   DCHECK(last_session_config_.get());
   SpeechRecognitionManager* manager = SpeechRecognitionManager::GetInstance();
   const int new_session_id = manager->CreateSession(*last_session_config_);
   DCHECK_NE(new_session_id, kNoActiveBubble);
   last_session_config_.reset();
   manager->StartSession(new_session_id);
 }
 
 void ChromeSpeechRecognitionManagerDelegate::OnRecognitionStart(
     int session_id) {
-  // Copy the configuration of the session (for the "try again" button).
-  last_session_config_.reset(new content::SpeechRecognitionSessionConfig(
-      SpeechRecognitionManager::GetInstance()->GetSessionConfig(session_id)));
-
-  // Create and show the bubble.
-  DCHECK_EQ(active_bubble_session_id_, kNoActiveBubble);
-  active_bubble_session_id_ = session_id;
   const content::SpeechRecognitionSessionContext& context =
       SpeechRecognitionManager::GetInstance()->GetSessionContext(session_id);
-  bubble_controller_->CreateBubble(session_id,
-                                   context.render_process_id,
-                                   context.render_view_id,
-                                   context.element_rect);
-  // TODO(primiano) Why not create directly the bubble in warmup mode?
-  bubble_controller_->SetBubbleWarmUpMode(session_id);
+
+  if (RequiresBubble(session_id)) {
+    // Copy the configuration of the session (for the "try again" button).
+    last_session_config_.reset(new content::SpeechRecognitionSessionConfig(
+        SpeechRecognitionManager::GetInstance()->GetSessionConfig(session_id)));
+
+    // Create and show the bubble.
+    DCHECK_EQ(active_bubble_session_id_, kNoActiveBubble);
+    active_bubble_session_id_ = session_id;
+    GetBubbleController()->CreateBubble(session_id,
+                                        context.render_process_id,
+                                        context.render_view_id,
+                                        context.element_rect);
+
+    // TODO(primiano) Why not creating directly the bubble in warmup mode?
+    GetBubbleController()->SetBubbleWarmUpMode(session_id);
+  }
 }
 
 void ChromeSpeechRecognitionManagerDelegate::OnAudioStart(int session_id) {
-  bubble_controller_->SetBubbleRecordingMode(session_id);
+  if (RequiresBubble(session_id)) {
+    GetBubbleController()->SetBubbleRecordingMode(session_id);
+  } else if (RequiresTrayIcon(session_id)) {
+    const content::SpeechRecognitionSessionContext& context =
+        SpeechRecognitionManager::GetInstance()->GetSessionContext(session_id);
+    GetTrayIconController()->Show(context.context_name,
+                                  context.is_first_request_for_context);
+  }
 }
 
 void ChromeSpeechRecognitionManagerDelegate::OnEnvironmentEstimationComplete(
     int session_id) {
 }
 
 void ChromeSpeechRecognitionManagerDelegate::OnSoundStart(int session_id) {
 }
 
 void ChromeSpeechRecognitionManagerDelegate::OnSoundEnd(int session_id) {
 }
 
 void ChromeSpeechRecognitionManagerDelegate::OnAudioEnd(int session_id) {
   // OnAudioEnd can be also raised after an abort, when the bubble has already
   // been closed.
-  if (active_bubble_session_id_ == session_id)
-    bubble_controller_->SetBubbleRecognizingMode(session_id);
+  if (RequiresBubble(session_id) && active_bubble_session_id_ == session_id) {
+    GetBubbleController()->SetBubbleRecognizingMode(session_id);
+  } else if (RequiresTrayIcon(session_id)) {
+    GetTrayIconController()->Hide();
+  }
 }
 
 void ChromeSpeechRecognitionManagerDelegate::OnRecognitionResult(
     int session_id, const content::SpeechRecognitionResult& result) {
   // A result can be dispatched when the bubble is not visible anymore (e.g.,
   // lost focus while waiting for a result, thus continuing in background).
-  if (active_bubble_session_id_ == session_id) {
-    bubble_controller_->CloseBubble(session_id);
+  if (RequiresBubble(session_id) && active_bubble_session_id_ == session_id) {
+    GetBubbleController()->CloseBubble(session_id);
     last_session_config_.reset();
     active_bubble_session_id_ = kNoActiveBubble;
   }
 }
 
 void ChromeSpeechRecognitionManagerDelegate::OnRecognitionError(
     int session_id, const content::SpeechRecognitionError& error) {
   // An error can be dispatched when the bubble is not visible anymore.
   if (active_bubble_session_id_ != session_id)
     return;
+  DCHECK(RequiresBubble(session_id));
 
   int error_message_id = 0;
   switch (error.code) {
     case content::SPEECH_RECOGNITION_ERROR_AUDIO:
       switch (error.details) {
         case content::SPEECH_AUDIO_ERROR_DETAILS_NO_MIC:
           error_message_id = IDS_SPEECH_INPUT_NO_MIC;
           break;
         case content::SPEECH_AUDIO_ERROR_DETAILS_IN_USE:
           error_message_id = IDS_SPEECH_INPUT_MIC_IN_USE;
@@ skipping 12 matching lines @@
     case content::SPEECH_RECOGNITION_ERROR_NO_MATCH:
       error_message_id = IDS_SPEECH_INPUT_NO_RESULTS;
       break;
     case content::SPEECH_RECOGNITION_ERROR_NETWORK:
       error_message_id = IDS_SPEECH_INPUT_NET_ERROR;
       break;
     default:
       NOTREACHED() << "unknown error " << error.code;
       return;
   }
-  bubble_controller_->SetBubbleMessage(
+  GetBubbleController()->SetBubbleMessage(
       session_id, l10n_util::GetStringUTF16(error_message_id));
 }
 
 void ChromeSpeechRecognitionManagerDelegate::OnAudioLevelsChange(
     int session_id, float volume, float noise_volume) {
-  if (active_bubble_session_id_ == session_id)
-    bubble_controller_->SetBubbleInputVolume(session_id, volume, noise_volume);
+  if (active_bubble_session_id_ == session_id) {
+    DCHECK(RequiresBubble(session_id));
+    GetBubbleController()->SetBubbleInputVolume(session_id,
+                                                volume, noise_volume);
+  } else if (RequiresTrayIcon(session_id)) {
+    GetTrayIconController()->SetVUMeterVolume(volume);
+  }
 }
 
 void ChromeSpeechRecognitionManagerDelegate::OnRecognitionEnd(int session_id) {
+  // No need to remove the bubble here, since either one of the following events
+  // must have happened prior to this callback:
+  // - A previous OnRecognitionResult event already closed the bubble.
+  // - An error occurred, so the bubble is showing the error and will be closed
+  //   when it will lose focus (by InfoBubbleFocusChanged()).
+  // - The bubble lost focus or the user pressed the Cancel button, thus it has
+  //   been closed by InfoBubbleFocusChanged(), which triggered an AbortSession.
 }
 
 void ChromeSpeechRecognitionManagerDelegate::GetDiagnosticInformation(
     bool* can_report_metrics,
     std::string* hardware_info) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   if (!optional_request_info_.get()) {
     optional_request_info_ = new OptionalRequestInfo();
     // Since hardware info is optional with speech input requests, we start an
     // asynchronous fetch here and move on with recording audio. This first
     // speech input request would send an empty string for hardware info and
     // subsequent requests may have the hardware info available if the fetch
     // completed before them. This way we don't end up stalling the user with
     // a long wait and disk seeks when they click on a UI element and start
     // speaking.
     optional_request_info_->Refresh();
   }
   *can_report_metrics = optional_request_info_->can_report_metrics();
   *hardware_info = optional_request_info_->value();
 }
 
 void ChromeSpeechRecognitionManagerDelegate::CheckRecognitionIsAllowed(
     int session_id,
     base::Callback<void(int session_id, bool is_allowed)> callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+
+  // We don't need any particular check for sessions not using a bubble. In such
+  // cases, we just notify it to the manager (calling-back synchronously, since
+  // we remain in the IO thread).
+  if (RequiresTrayIcon(session_id)) {
+    callback.Run(session_id, true /* is_allowed */);
+    return;
+  }
+
+  // Sessions using bubbles, conversely, need a check on the renderer view type.
+  // The check must be performed in the UI thread. We defer it posting to
+  // CheckRenderViewType, which will issue the callback on our behalf.
   const content::SpeechRecognitionSessionContext& context =
       SpeechRecognitionManager::GetInstance()->GetSessionContext(session_id);
-
-  // The check must be performed in the UI thread. We defer it posting to
-  // CheckRenderViewType, which will issue the callback on our behalf.
   BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
                           base::Bind(&CheckRenderViewType,
                                      session_id,
                                      callback,
                                      context.render_process_id,
                                      context.render_view_id));
 }
 
 content::SpeechRecognitionEventListener*
 ChromeSpeechRecognitionManagerDelegate::GetEventListener() {
@@ skipping 19 matching lines @@
     WebContents* web_contents =
         WebContents::FromRenderViewHost(render_view_host);
     chrome::ViewType view_type = chrome::GetViewType(web_contents);
     if (view_type == chrome::VIEW_TYPE_TAB_CONTENTS)
       allowed = true;
   }
   BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
                           base::Bind(callback, session_id, allowed));
 }
 
+SpeechRecognitionBubbleController*
+ChromeSpeechRecognitionManagerDelegate::GetBubbleController() {
+  if (!bubble_controller_.get())
+    bubble_controller_ = new SpeechRecognitionBubbleController(this);
+  return bubble_controller_.get();
+}
+
+SpeechRecognitionTrayIconController*
+ChromeSpeechRecognitionManagerDelegate::GetTrayIconController() {
+  if (!tray_icon_controller_.get())
+    tray_icon_controller_ = new SpeechRecognitionTrayIconController();
+  return tray_icon_controller_.get();
+}
+
+
 }  // namespace speech