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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_TRANSLATE_CONTENT_BROWSER_TRANSLATE_WAITER_H_
#define COMPONENTS_TRANSLATE_CONTENT_BROWSER_TRANSLATE_WAITER_H_
#include <memory>
#include "base/run_loop.h"
#include "base/scoped_observation.h"
#include "components/translate/content/browser/content_translate_driver.h"
#include "components/translate/core/browser/translate_driver.h"
#include "components/translate/core/common/translate_errors.h"
namespace translate {
// A helper class that allows test to block until certain translate events have
// been received from a TranslateDriver.
class TranslateWaiter : TranslateDriver::LanguageDetectionObserver,
ContentTranslateDriver::TranslationObserver {
public:
enum class WaitEvent {
kLanguageDetermined,
kPageTranslated,
kIsPageTranslatedChanged
};
TranslateWaiter(ContentTranslateDriver* translate_driver,
WaitEvent wait_event);
TranslateWaiter(const TranslateWaiter&) = delete;
TranslateWaiter& operator=(const TranslateWaiter&) = delete;
~TranslateWaiter() override;
// Blocks until an observer function matching |wait_event_| is invoked, or
// returns immediately if one has already been observed.
void Wait();
// TranslateDriver::LanguageDetectionObserver:
void OnLanguageDetermined(const LanguageDetectionDetails& details) override;
// ContentTranslateDriver::TranslationObserver:
void OnPageTranslated(const std::string& source_lang,
const std::string& translated_lang,
TranslateErrors error_type) override;
void OnIsPageTranslatedChanged(content::WebContents* source) override;
private:
WaitEvent wait_event_;
base::ScopedObservation<TranslateDriver,
TranslateDriver::LanguageDetectionObserver>
scoped_language_detection_observation_{this};
base::ScopedObservation<ContentTranslateDriver,
ContentTranslateDriver::TranslationObserver>
scoped_translation_observation_{this};
base::RunLoop run_loop_;
};
} // namespace translate
#endif // COMPONENTS_TRANSLATE_CONTENT_BROWSER_TRANSLATE_WAITER_H_
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