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content / web_test / browser / web_test_tts_platform.h [blame]
// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_WEB_TEST_BROWSER_WEB_TEST_TTS_PLATFORM_H_
#define CONTENT_WEB_TEST_BROWSER_WEB_TEST_TTS_PLATFORM_H_
#include "base/memory/singleton.h"
#include "content/public/browser/tts_platform.h"
// Dummy implementation of TtsPlatform for web tests.
// Currently does nothing interesting but could be extended to enable more
// detailed testing.
class WebTestTtsPlatform : public content::TtsPlatform {
public:
using OnSpeakFinishedCallback = base::OnceCallback<void(bool)>;
static WebTestTtsPlatform* GetInstance();
WebTestTtsPlatform(const WebTestTtsPlatform&) = delete;
WebTestTtsPlatform& operator=(const WebTestTtsPlatform&) = delete;
// content::TtsControllerDelegate overrides.
bool PlatformImplSupported() override;
bool PlatformImplInitialized() override;
void LoadBuiltInTtsEngine(content::BrowserContext* browser_context) override;
void Speak(int utterance_id,
const std::string& utterance,
const std::string& lang,
const content::VoiceData& voice,
const content::UtteranceContinuousParameters& params,
OnSpeakFinishedCallback on_speak_finished) override;
bool StopSpeaking() override;
bool IsSpeaking() override;
void GetVoices(std::vector<content::VoiceData>* out_voices) override;
void Pause() override;
void Resume() override;
void WillSpeakUtteranceWithVoice(
content::TtsUtterance* utterance,
const content::VoiceData& voice_data) override;
std::string GetError() override;
void ClearError() override;
void SetError(const std::string& error) override;
void Shutdown() override;
void FinalizeVoiceOrdering(std::vector<content::VoiceData>& voices) override;
void RefreshVoices() override;
content::ExternalPlatformDelegate* GetExternalPlatformDelegate() override;
private:
static const int kInvalidUtteranceId = -1;
WebTestTtsPlatform();
virtual ~WebTestTtsPlatform();
void SimulateEndEvent(int utterance_id,
int len,
OnSpeakFinishedCallback on_speak_finished);
int utterance_id_ = kInvalidUtteranceId;
friend struct base::DefaultSingletonTraits<WebTestTtsPlatform>;
};
#endif // CONTENT_WEB_TEST_BROWSER_WEB_TEST_TTS_PLATFORM_H_