chrome/browser/ash/arc/tts/arc_tts_service.h

// Copyright 2016 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_ASH_ARC_TTS_ARC_TTS_SERVICE_H_
#define CHROME_BROWSER_ASH_ARC_TTS_ARC_TTS_SERVICE_H_

#include <string>

#include "ash/components/arc/mojom/tts.mojom.h"
#include "base/memory/raw_ptr.h"
#include "components/keyed_service/core/keyed_service.h"

namespace content {
class BrowserContext;
class TtsController;
}  // namespace content

namespace arc {

class ArcBridgeService;

// Provides text to speech services and events to Chrome OS via Android's text
// to speech API.
class ArcTtsService : public KeyedService,
                      public mojom::TtsHost {
 public:
  // Returns singleton instance for the given BrowserContext,
  // or nullptr if the browser |context| is not allowed to use ARC.
  static ArcTtsService* GetForBrowserContext(content::BrowserContext* context);
  static ArcTtsService* GetForBrowserContextForTesting(
      content::BrowserContext* context);

  ArcTtsService(content::BrowserContext* context,
                ArcBridgeService* bridge_service);

  ArcTtsService(const ArcTtsService&) = delete;
  ArcTtsService& operator=(const ArcTtsService&) = delete;

  ~ArcTtsService() override;

  // mojom::TtsHost overrides:
  void OnTtsEvent(uint32_t id,
                  mojom::TtsEventType event_type,
                  uint32_t char_index,
                  uint32_t length,
                  const std::string& error_msg) override;
  void OnVoicesChanged(std::vector<mojom::TtsVoicePtr> voices) override;

  void set_tts_controller_for_testing(content::TtsController* tts_controller) {
    tts_controller_ = tts_controller;
  }

  static void EnsureFactoryBuilt();

 private:
  const raw_ptr<ArcBridgeService>
      arc_bridge_service_;  // Owned by ArcServiceManager.

  raw_ptr<content::TtsController, DanglingUntriaged> tts_controller_;
};

}  // namespace arc

#endif  // CHROME_BROWSER_ASH_ARC_TTS_ARC_TTS_SERVICE_H_