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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_SPEECH_EXTENSION_API_TTS_EXTENSION_API_H_
#define CHROME_BROWSER_SPEECH_EXTENSION_API_TTS_EXTENSION_API_H_
#include <string>
#include "base/memory/raw_ptr.h"
#include "base/scoped_observation.h"
#include "content/public/browser/tts_controller.h"
#include "extensions/browser/api/api_resource_manager.h"
#include "extensions/browser/browser_context_keyed_api_factory.h"
#include "extensions/browser/event_router.h"
#include "extensions/browser/event_router_factory.h"
#include "extensions/browser/extension_function.h"
namespace content {
class BrowserContext;
}
const char* TtsEventTypeToString(content::TtsEventType event_type);
content::TtsEventType TtsEventTypeFromString(const std::string& str);
namespace extensions {
class TtsSpeakFunction : public ExtensionFunction {
private:
~TtsSpeakFunction() override = default;
ResponseAction Run() override;
DECLARE_EXTENSION_FUNCTION("tts.speak", TTS_SPEAK)
};
class TtsStopSpeakingFunction : public ExtensionFunction {
private:
~TtsStopSpeakingFunction() override = default;
ResponseAction Run() override;
DECLARE_EXTENSION_FUNCTION("tts.stop", TTS_STOP)
};
class TtsPauseFunction : public ExtensionFunction {
private:
~TtsPauseFunction() override = default;
ResponseAction Run() override;
DECLARE_EXTENSION_FUNCTION("tts.pause", TTS_PAUSE)
};
class TtsResumeFunction : public ExtensionFunction {
private:
~TtsResumeFunction() override = default;
ResponseAction Run() override;
DECLARE_EXTENSION_FUNCTION("tts.resume", TTS_RESUME)
};
class TtsIsSpeakingFunction : public ExtensionFunction {
private:
~TtsIsSpeakingFunction() override = default;
void OnIsSpeakingComplete(bool speaking);
ResponseAction Run() override;
DECLARE_EXTENSION_FUNCTION("tts.isSpeaking", TTS_ISSPEAKING)
};
class TtsGetVoicesFunction : public ExtensionFunction {
private:
~TtsGetVoicesFunction() override = default;
ResponseAction Run() override;
DECLARE_EXTENSION_FUNCTION("tts.getVoices", TTS_GETVOICES)
};
class TtsAPI : public BrowserContextKeyedAPI,
public EventRouter::Observer,
public content::VoicesChangedDelegate {
public:
explicit TtsAPI(content::BrowserContext* context);
~TtsAPI() override;
// BrowserContextKeyedAPI implementation.
static BrowserContextKeyedAPIFactory<TtsAPI>* GetFactoryInstance();
private:
friend class BrowserContextKeyedAPIFactory<TtsAPI>;
// VoicesChangedDelegate:
void OnVoicesChanged() override;
// EventRouter::Observer:
// We will only broadcast voices changed if we have any listeners.
void OnListenerAdded(const EventListenerInfo& details) override;
void OnListenerRemoved(const EventListenerInfo& details) override;
void StartOrStopListeningForVoicesChanged();
raw_ptr<EventRouter> event_router_;
bool broadcast_events_ = false;
// BrowserContextKeyedAPI implementation.
static const char* service_name() {
return "TtsAPI";
}
static const bool kServiceIsNULLWhileTesting = true;
};
template <>
struct BrowserContextFactoryDependencies<TtsAPI> {
static void DeclareFactoryDependencies(
BrowserContextKeyedAPIFactory<TtsAPI>* factory) {
factory->DependsOn(EventRouterFactory::GetInstance());
}
};
} // namespace extensions
#endif // CHROME_BROWSER_SPEECH_EXTENSION_API_TTS_EXTENSION_API_H_
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