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| 1 // Copyright (c) 2011 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 #include "chrome/browser/speech/speech_input_extension_api.h" | |
| 6 | |
| 7 #include "base/values.h" | |
| 8 #include "chrome/browser/browser_process.h" | |
| 9 #include "chrome/browser/profiles/profile.h" | |
| 10 #include "chrome/browser/speech/speech_input_extension_manager.h" | |
| 11 #include "chrome/common/chrome_notification_types.h" | |
| 12 #include "content/public/browser/notification_details.h" | |
| 13 #include "content/public/browser/notification_source.h" | |
| 14 | |
| 15 namespace { | |
| 16 | |
| 17 const char kLanguageKey[] = "language"; | |
| 18 const char kGrammarKey[] = "grammar"; | |
| 19 const char kFilterProfanitiesKey[] = "filterProfanities"; | |
| 20 | |
| 21 const char kDefaultGrammar[] = "builtin:dictation"; | |
| 22 const bool kDefaultFilterProfanities = true; | |
| 23 | |
| 24 } // anonymous namespace | |
| 25 | |
| 26 SpeechInputAsyncFunction::SpeechInputAsyncFunction( | |
| 27 int start_state, | |
| 28 int transition_state, | |
| 29 int end_state, | |
| 30 int transition_notification) | |
| 31 : start_state_(start_state), | |
| 32 transition_state_(transition_state), | |
| 33 end_state_(end_state), | |
| 34 transition_notification_(transition_notification), | |
| 35 expecting_transition_(false), | |
| 36 failed_(false) { | |
| 37 registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_SPEECH_INPUT_FAILED, | |
| 38 content::Source<Profile>(profile())); | |
| 39 } | |
| 40 | |
| 41 SpeechInputAsyncFunction::~SpeechInputAsyncFunction() { | |
| 42 } | |
| 43 | |
| 44 void SpeechInputAsyncFunction::Run() { | |
| 45 if (failed_) { | |
| 46 registrar_.RemoveAll(); | |
| 47 SendResponse(false); | |
| 48 return; | |
| 49 } | |
| 50 | |
| 51 SpeechInputExtensionManager::State state = | |
| 52 SpeechInputExtensionManager::GetForProfile(profile())->state(); | |
| 53 | |
| 54 // RunImpl should be always called once independently of the state we're in, | |
| 55 // otherwise we might miss requestDenied error situations. | |
| 56 if (!expecting_transition_) { | |
| 57 SpeechInputExtensionManager::State state_before_call = state; | |
| 58 | |
| 59 // Register before RunImpl to ensure it's received if generated. | |
| 60 if (state_before_call == start_state_) { | |
| 61 registrar_.Add(this, transition_notification_, | |
| 62 content::Source<Profile>(profile())); | |
| 63 AddRef(); // Balanced in Observe(). | |
| 64 } | |
| 65 | |
| 66 if (!RunImpl()) { | |
| 67 registrar_.RemoveAll(); | |
| 68 SendResponse(false); | |
| 69 return; | |
| 70 } | |
| 71 | |
| 72 // RunImpl should always return false and set the appropriate error code | |
| 73 // when called in a state different to the start one. | |
| 74 DCHECK_EQ(state_before_call, start_state_); | |
| 75 | |
| 76 state = SpeechInputExtensionManager::GetForProfile(profile())->state(); | |
| 77 DCHECK_EQ(state, transition_state_); | |
| 78 expecting_transition_ = true; | |
| 79 } | |
| 80 | |
| 81 if (state == transition_state_) | |
| 82 return; | |
| 83 | |
| 84 DCHECK_EQ(state, end_state_); | |
| 85 registrar_.RemoveAll(); | |
| 86 SendResponse(true); | |
| 87 } | |
| 88 | |
| 89 void SpeechInputAsyncFunction::Observe( | |
| 90 int type, | |
| 91 const content::NotificationSource& source, | |
| 92 const content::NotificationDetails& details) { | |
| 93 DCHECK_EQ(profile(), content::Source<Profile>(source).ptr()); | |
| 94 | |
| 95 if (type == chrome::NOTIFICATION_EXTENSION_SPEECH_INPUT_FAILED) { | |
| 96 SpeechInputExtensionManager::ExtensionError* error_details = | |
| 97 content::Details<SpeechInputExtensionManager::ExtensionError>( | |
| 98 details).ptr(); | |
| 99 if (error_details->extension_id_ != extension_id()) | |
| 100 return; | |
| 101 | |
| 102 error_ = error_details->error_; | |
| 103 failed_ = true; | |
| 104 } else { | |
| 105 DCHECK_EQ(type, transition_notification_); | |
| 106 if (*content::Details<std::string>(details).ptr() != extension_id()) | |
| 107 return; | |
| 108 DCHECK(expecting_transition_); | |
| 109 } | |
| 110 | |
| 111 Run(); | |
| 112 Release(); // Balanced in Run(). | |
| 113 } | |
| 114 | |
| 115 StartSpeechInputFunction::StartSpeechInputFunction() | |
| 116 : SpeechInputAsyncFunction(SpeechInputExtensionManager::kIdle, | |
| 117 SpeechInputExtensionManager::kStarting, | |
| 118 SpeechInputExtensionManager::kRecording, | |
| 119 chrome::NOTIFICATION_EXTENSION_SPEECH_INPUT_RECORDING_STARTED) { | |
| 120 } | |
| 121 | |
| 122 bool StartSpeechInputFunction::RunImpl() { | |
| 123 std::string language; | |
| 124 std::string grammar = kDefaultGrammar; | |
| 125 bool filter_profanities = kDefaultFilterProfanities; | |
| 126 | |
| 127 if (!args_->empty()) { | |
| 128 DictionaryValue *options; | |
| 129 if (!args_->GetDictionary(0, &options)) | |
| 130 return false; | |
| 131 DCHECK(options); | |
| 132 | |
| 133 if (options->HasKey(kLanguageKey)) | |
| 134 options->GetString(kLanguageKey, &language); | |
| 135 if (options->HasKey(kGrammarKey)) | |
| 136 options->GetString(kGrammarKey, &grammar); | |
| 137 | |
| 138 if (options->HasKey(kFilterProfanitiesKey)) { | |
| 139 options->GetBoolean(kFilterProfanitiesKey, | |
| 140 &filter_profanities); | |
| 141 } | |
| 142 } | |
| 143 | |
| 144 // Use the application locale if the language is empty or not provided. | |
| 145 if (language.empty()) { | |
| 146 language = g_browser_process->GetApplicationLocale(); | |
| 147 VLOG(1) << "Language not specified. Using application locale " << language; | |
| 148 } | |
| 149 | |
| 150 return SpeechInputExtensionManager::GetForProfile(profile())->Start( | |
| 151 extension_id(), language, grammar, filter_profanities, &error_); | |
| 152 } | |
| 153 | |
| 154 StopSpeechInputFunction::StopSpeechInputFunction() | |
| 155 : SpeechInputAsyncFunction(SpeechInputExtensionManager::kRecording, | |
| 156 SpeechInputExtensionManager::kStopping, | |
| 157 SpeechInputExtensionManager::kIdle, | |
| 158 chrome::NOTIFICATION_EXTENSION_SPEECH_INPUT_RECORDING_STOPPED) { | |
| 159 } | |
| 160 | |
| 161 bool StopSpeechInputFunction::RunImpl() { | |
| 162 return SpeechInputExtensionManager::GetForProfile( | |
| 163 profile())->Stop(extension_id(), &error_); | |
| 164 } | |
| 165 | |
| 166 bool IsRecordingSpeechInputFunction::RunImpl() { | |
| 167 // Do not access the AudioManager directly here to ensure the proper | |
| 168 // IsRecording behaviour in the API tests. | |
| 169 result_.reset(Value::CreateBooleanValue( | |
| 170 SpeechInputExtensionManager::GetForProfile(profile())->IsRecording())); | |
| 171 return true; | |
| 172 } | |
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