Add a tray notification UI for speech input recording in the extension API.

chrome/browser/extensions/speech_input/extension_speech_input_api.cc

-// Copyright (c) 2011 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/extensions/speech_input/extension_speech_input_api.h"
-
-#include "base/values.h"
-#include "chrome/browser/browser_process.h"
-#include "chrome/browser/extensions/speech_input/extension_speech_input_api_constants.h"
-#include "chrome/browser/extensions/speech_input/extension_speech_input_manager.h"
-#include "chrome/browser/profiles/profile.h"
-#include "chrome/common/chrome_notification_types.h"
-#include "content/public/browser/notification_details.h"
-#include "content/public/browser/notification_source.h"
-
-namespace constants = extension_speech_input_api_constants;
-
-SpeechInputAsyncFunction::SpeechInputAsyncFunction(
-    int start_state,
-    int transition_state,
-    int end_state,
-    int transition_notification)
-    : start_state_(start_state),
-      transition_state_(transition_state),
-      end_state_(end_state),
-      transition_notification_(transition_notification),
-      expecting_transition_(false),
-      failed_(false) {
-  registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_SPEECH_INPUT_FAILED,
-      content::Source<Profile>(profile()));
-}
-
-SpeechInputAsyncFunction::~SpeechInputAsyncFunction() {
-}
-
-void SpeechInputAsyncFunction::Run() {
-  if (failed_) {
-    registrar_.RemoveAll();
-    SendResponse(false);
-    return;
-  }
-
-  ExtensionSpeechInputManager::State state =
-      ExtensionSpeechInputManager::GetForProfile(profile())->state();
-
-  // RunImpl should be always called once independently of the state we're in,
-  // otherwise we might miss requestDenied error situations.
-  if (!expecting_transition_) {
-    ExtensionSpeechInputManager::State state_before_call = state;
-
-    // Register before RunImpl to ensure it's received if generated.
-    if (state_before_call == start_state_) {
-      registrar_.Add(this, transition_notification_,
-          content::Source<Profile>(profile()));
-      AddRef(); // Balanced in Observe().
-    }
-
-    if (!RunImpl()) {
-      registrar_.RemoveAll();
-      SendResponse(false);
-      return;
-    }
-
-    // RunImpl should always return false and set the appropriate error code
-    // when called in a state different to the start one.
-    DCHECK_EQ(state_before_call, start_state_);
-
-    state = ExtensionSpeechInputManager::GetForProfile(profile())->state();
-    DCHECK_EQ(state, transition_state_);
-    expecting_transition_ = true;
-  }
-
-  if (state == transition_state_)
-    return;
-
-  DCHECK_EQ(state, end_state_);
-  registrar_.RemoveAll();
-  SendResponse(true);
-}
-
-void SpeechInputAsyncFunction::Observe(
-    int type,
-    const content::NotificationSource& source,
-    const content::NotificationDetails& details) {
-  DCHECK_EQ(profile(), content::Source<Profile>(source).ptr());
-
-  if (type == chrome::NOTIFICATION_EXTENSION_SPEECH_INPUT_FAILED) {
-    ExtensionSpeechInputManager::ExtensionError* error_details =
-        content::Details<ExtensionSpeechInputManager::ExtensionError>(
-            details).ptr();
-    if (error_details->extension_id_ != extension_id())
-      return;
-
-    error_ = error_details->error_;
-    failed_ = true;
-  } else {
-    DCHECK_EQ(type, transition_notification_);
-    if (*content::Details<std::string>(details).ptr() != extension_id())
-      return;
-    DCHECK(expecting_transition_);
-  }
-
-  Run();
-  Release(); // Balanced in Run().
-}
-
-StartSpeechInputFunction::StartSpeechInputFunction()
-    : SpeechInputAsyncFunction(ExtensionSpeechInputManager::kIdle,
-          ExtensionSpeechInputManager::kStarting,
-          ExtensionSpeechInputManager::kRecording,
-          chrome::NOTIFICATION_EXTENSION_SPEECH_INPUT_RECORDING_STARTED) {
-}
-
-bool StartSpeechInputFunction::RunImpl() {
-  std::string language;
-  std::string grammar = constants::kDefaultGrammar;
-  bool filter_profanities = constants::kDefaultFilterProfanities;
-
-  if (!args_->empty()) {
-    DictionaryValue *options;
-    if (!args_->GetDictionary(0, &options))
-      return false;
-    DCHECK(options);
-
-    if (options->HasKey(constants::kLanguageKey))
-      options->GetString(constants::kLanguageKey, &language);
-    if (options->HasKey(constants::kGrammarKey))
-      options->GetString(constants::kGrammarKey, &grammar);
-
-    if (options->HasKey(constants::kFilterProfanitiesKey)) {
-      options->GetBoolean(constants::kFilterProfanitiesKey,
-          &filter_profanities);
-    }
-  }
-
-  // Use the application locale if the language is empty or not provided.
-  if (language.empty()) {
-    language = g_browser_process->GetApplicationLocale();
-    VLOG(1) << "Language not specified. Using application locale " << language;
-  }
-
-  return ExtensionSpeechInputManager::GetForProfile(profile())->Start(
-      extension_id(), language, grammar, filter_profanities, &error_);
-}
-
-StopSpeechInputFunction::StopSpeechInputFunction()
-    : SpeechInputAsyncFunction(ExtensionSpeechInputManager::kRecording,
-          ExtensionSpeechInputManager::kStopping,
-          ExtensionSpeechInputManager::kIdle,
-          chrome::NOTIFICATION_EXTENSION_SPEECH_INPUT_RECORDING_STOPPED) {
-}
-
-bool StopSpeechInputFunction::RunImpl() {
-  return ExtensionSpeechInputManager::GetForProfile(
-      profile())->Stop(extension_id(), &error_);
-}
-
-bool IsRecordingSpeechInputFunction::RunImpl() {
-  // Do not access the AudioManager directly here to ensure the proper
-  // IsRecording behaviour in the API tests.
-  result_.reset(Value::CreateBooleanValue(
-      ExtensionSpeechInputManager::GetForProfile(profile())->IsRecording()));
-  return true;
-}