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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/android/persisted_tab_data/language_persisted_tab_data_android.h"
#include "base/check.h"
#include "base/functional/bind.h"
#include "base/memory/ptr_util.h"
#include "chrome/browser/android/persisted_tab_data/language_data.pb.h"
#include "chrome/browser/android/tab_android.h"
#include "components/content_capture/browser/onscreen_content_provider.h"
#include "components/translate/core/browser/translate_driver.h"
#include "components/translate/core/common/language_detection_details.h"
#include "content/public/browser/web_contents.h"
#include "url/gurl.h"
LanguagePersistedTabDataAndroid::LanguagePersistedTabDataAndroid(
TabAndroid* tab_android)
: PersistedTabDataAndroid(tab_android,
LanguagePersistedTabDataAndroid::UserDataKey()),
tab_(tab_android) {}
LanguagePersistedTabDataAndroid::~LanguagePersistedTabDataAndroid() {
if (translate_driver_) {
translate_driver_->RemoveLanguageDetectionObserver(this);
}
}
// static
void LanguagePersistedTabDataAndroid::From(TabAndroid* tab_android,
FromCallback from_callback) {
PersistedTabDataAndroid::From(
tab_android->GetTabAndroidWeakPtr(),
LanguagePersistedTabDataAndroid::UserDataKey(),
base::BindOnce([](TabAndroid* tab_android)
-> std::unique_ptr<PersistedTabDataAndroid> {
return std::make_unique<LanguagePersistedTabDataAndroid>(tab_android);
}),
std::move(from_callback));
}
const void* LanguagePersistedTabDataAndroid::UserDataKey() {
return &LanguagePersistedTabDataAndroid::kUserDataKey;
}
void LanguagePersistedTabDataAndroid::RegisterTranslateDriver(
translate::TranslateDriver* translate_driver) {
DCHECK(translate_driver);
if (translate_driver_ == translate_driver) {
return;
}
if (translate_driver_ != nullptr) {
translate_driver_->RemoveLanguageDetectionObserver(this);
}
translate_driver_ = translate_driver;
if (translate_driver_) {
translate_driver_->AddLanguageDetectionObserver(this);
}
}
void LanguagePersistedTabDataAndroid::OnLanguageDetermined(
const translate::LanguageDetectionDetails& details) {
if (!tab_ || !tab_->web_contents()) {
return;
}
SetLanguageDetails(details.adopted_language, details.model_reliability_score);
content::WebContents* web_contents = tab_->web_contents();
if (!web_contents) {
return;
}
content_capture::OnscreenContentProvider* onscreen_content_provider =
content_capture::OnscreenContentProvider::FromWebContents(web_contents);
if (!onscreen_content_provider) {
return;
}
onscreen_content_provider->DidUpdateLanguageDetails(detected_language_code_,
language_confidence_);
DVLOG(1) << "LanguagePersistedTabDataAndroid: DidUpdateLanguageDetails "
"directly called for: "
<< detected_language_code_
<< " (Confidence: " << language_confidence_ << ")";
}
void LanguagePersistedTabDataAndroid::OnTranslateDriverDestroyed(
translate::TranslateDriver* driver) {
if (translate_driver_) {
translate_driver_->RemoveLanguageDetectionObserver(this);
}
translate_driver_ = nullptr;
}
std::unique_ptr<const std::vector<uint8_t>>
LanguagePersistedTabDataAndroid::Serialize() {
language::LanguageData data;
data.set_language_code(detected_language_code_);
data.set_language_confidence(language_confidence_);
auto serialized_data =
std::make_unique<std::vector<uint8_t>>(data.ByteSizeLong());
data.SerializeToArray(serialized_data->data(), serialized_data->size());
return serialized_data;
}
void LanguagePersistedTabDataAndroid::Deserialize(
const std::vector<uint8_t>& data) {
language::LanguageData language_data;
if (!language_data.ParseFromArray(data.data(), data.size())) {
return;
}
if (language_data.has_language_code()) {
detected_language_code_ = language_data.language_code();
}
if (language_data.has_language_confidence()) {
language_confidence_ = language_data.language_confidence();
}
}
void LanguagePersistedTabDataAndroid::SetLanguageDetails(
const std::string& language_code,
float confidence) {
if (language_code.empty()) {
return;
}
if (detected_language_code_ == language_code &&
language_confidence_ == confidence) {
return;
}
detected_language_code_ = language_code;
language_confidence_ = confidence;
Save();
}
void LanguagePersistedTabDataAndroid::ExistsForTesting(
TabAndroid* tab_android,
base::OnceCallback<void(bool)> exists_callback) {
PersistedTabDataAndroid::ExistsForTesting(
tab_android, LanguagePersistedTabDataAndroid::UserDataKey(),
std::move(exists_callback));
}
TAB_ANDROID_USER_DATA_KEY_IMPL(LanguagePersistedTabDataAndroid)
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