From 937d243a4cf189a883f4ddc21b632a9999826047 Mon Sep 17 00:00:00 2001
From: 23rd <23rd@vivaldi.net>
Date: Fri, 18 Nov 2022 17:00:19 +0300
Subject: [PATCH] Respected translation preferences in sections.

---
 Telegram/SourceFiles/boxes/translate_box.cpp  | 31 +++++++++++
 Telegram/SourceFiles/boxes/translate_box.h    |  2 +
 .../history/history_inner_widget.cpp          | 51 +++++++++++--------
 .../view/history_view_context_menu.cpp        |  7 ++-
 4 files changed, 67 insertions(+), 24 deletions(-)

diff --git a/Telegram/SourceFiles/boxes/translate_box.cpp b/Telegram/SourceFiles/boxes/translate_box.cpp
index 09504d258..18864b287 100644
--- a/Telegram/SourceFiles/boxes/translate_box.cpp
+++ b/Telegram/SourceFiles/boxes/translate_box.cpp
@@ -300,4 +300,35 @@ void ChooseLanguageBox(
 	box->addButton(tr::lng_cancel(), [=] { box->closeBox(); });
 }
 
+bool SkipTranslate(TextWithEntities textWithEntities) {
+	const auto &text = textWithEntities.text;
+	if (text.isEmpty()) {
+		return true;
+	}
+	if (!Core::App().settings().translateButtonEnabled()) {
+		return true;
+	}
+	auto hasLetters = false;
+	constexpr auto kFirstChunk = 100;
+	for (auto i = 0; i < kFirstChunk; i++) {
+		if (i >= text.size()) {
+			hasLetters = true; // Rest characters are unknown.
+			break;
+		}
+		if (text.at(i).isLetter()) {
+			hasLetters = true;
+			break;
+		}
+	}
+	if (!hasLetters) {
+		return true;
+	}
+	const auto result = Platform::Language::Recognize(text);
+	if (result.unknown) {
+		return false;
+	}
+	const auto skip = Core::App().settings().skipTranslationForLanguage();
+	return (result.locale.language() == skip);
+}
+
 } // namespace Ui
diff --git a/Telegram/SourceFiles/boxes/translate_box.h b/Telegram/SourceFiles/boxes/translate_box.h
index 9d7116f75..22daec17b 100644
--- a/Telegram/SourceFiles/boxes/translate_box.h
+++ b/Telegram/SourceFiles/boxes/translate_box.h
@@ -21,6 +21,8 @@ void TranslateBox(
 	MsgId msgId,
 	TextWithEntities text);
 
+[[nodiscard]] bool SkipTranslate(TextWithEntities textWithEntities);
+
 void ChooseLanguageBox(
 	not_null<Ui::GenericBox*> box,
 	Fn<void(QLocale)> callback);
diff --git a/Telegram/SourceFiles/history/history_inner_widget.cpp b/Telegram/SourceFiles/history/history_inner_widget.cpp
index b122c6397..d3f2f3925 100644
--- a/Telegram/SourceFiles/history/history_inner_widget.cpp
+++ b/Telegram/SourceFiles/history/history_inner_widget.cpp
@@ -2261,20 +2261,24 @@ void HistoryInner::showContextMenu(QContextMenuEvent *e, bool showFromTouch) {
 	if (lnkPhoto || lnkDocument) {
 		const auto item = _dragStateItem;
 		const auto itemId = item ? item->fullId() : FullMsgId();
-		if (isUponSelected > 0 && !hasCopyRestrictionForSelected()) {
-			_menu->addAction(
-				(isUponSelected > 1
-					? tr::lng_context_copy_selected_items(tr::now)
-					: tr::lng_context_copy_selected(tr::now)),
-				[=] { copySelectedText(); },
-				&st::menuIconCopy);
-			_menu->addAction(tr::lng_context_translate_selected({}), [=] {
-				_controller->show(Box(
-					Ui::TranslateBox,
-					item->history()->peer,
-					MsgId(),
-					getSelectedText().rich));
-			}, &st::menuIconTranslate);
+		if (isUponSelected > 0) {
+			if (!hasCopyRestrictionForSelected()) {
+				_menu->addAction(
+					(isUponSelected > 1
+						? tr::lng_context_copy_selected_items(tr::now)
+						: tr::lng_context_copy_selected(tr::now)),
+					[=] { copySelectedText(); },
+					&st::menuIconCopy);
+			}
+			if (!Ui::SkipTranslate(getSelectedText().rich)) {
+				_menu->addAction(tr::lng_context_translate_selected({}), [=] {
+					_controller->show(Box(
+						Ui::TranslateBox,
+						item->history()->peer,
+						MsgId(),
+						getSelectedText().rich));
+				}, &st::menuIconTranslate);
+			}
 		}
 		addItemActions(item, item);
 		if (!selectedState.count) {
@@ -2366,13 +2370,15 @@ void HistoryInner::showContextMenu(QContextMenuEvent *e, bool showFromTouch) {
 					[=] { copySelectedText(); },
 					&st::menuIconCopy);
 			}
-			_menu->addAction(tr::lng_context_translate_selected({}), [=] {
-				_controller->show(Box(
-					Ui::TranslateBox,
-					item->history()->peer,
-					MsgId(),
-					getSelectedText().rich));
-			}, &st::menuIconTranslate);
+			if (!Ui::SkipTranslate(getSelectedText().rich)) {
+				_menu->addAction(tr::lng_context_translate_selected({}), [=] {
+					_controller->show(Box(
+						Ui::TranslateBox,
+						item->history()->peer,
+						MsgId(),
+						getSelectedText().rich));
+				}, &st::menuIconTranslate);
+			}
 			addItemActions(item, item);
 		} else {
 			addItemActions(item, albumPartItem);
@@ -2433,7 +2439,8 @@ void HistoryInner::showContextMenu(QContextMenuEvent *e, bool showFromTouch) {
 				if (!item->isService()
 					&& view
 					&& actionText.isEmpty()
-					&& (view->hasVisibleText() || mediaHasTextForCopy)) {
+					&& (view->hasVisibleText() || mediaHasTextForCopy)
+					&& !Ui::SkipTranslate(item->originalText())) {
 					_menu->addAction(tr::lng_context_translate(tr::now), [=] {
 						_controller->show(Box(
 							Ui::TranslateBox,
diff --git a/Telegram/SourceFiles/history/view/history_view_context_menu.cpp b/Telegram/SourceFiles/history/view/history_view_context_menu.cpp
index 06497c91a..a9aea0f34 100644
--- a/Telegram/SourceFiles/history/view/history_view_context_menu.cpp
+++ b/Telegram/SourceFiles/history/view/history_view_context_menu.cpp
@@ -1005,7 +1005,8 @@ base::unique_qptr<Ui::PopupMenu> FillContextMenu(
 			}
 		}, &st::menuIconCopy);
 	}
-	if (request.overSelection) {
+	if (request.overSelection
+		&& !Ui::SkipTranslate(list->getSelectedText().rich)) {
 		const auto owner = &view->history()->owner();
 		result->addAction(tr::lng_context_translate_selected(tr::now), [=] {
 			if (const auto item = owner->message(itemId)) {
@@ -1051,7 +1052,9 @@ base::unique_qptr<Ui::PopupMenu> FillContextMenu(
 				}
 			}, &st::menuIconCopy);
 		}
-		if (!link && (view->hasVisibleText() || mediaHasTextForCopy)) {
+		if (!link
+			&& (view->hasVisibleText() || mediaHasTextForCopy)
+			&& !Ui::SkipTranslate(item->originalText())) {
 			result->addAction(tr::lng_context_translate(tr::now), [=] {
 				if (const auto item = owner->message(itemId)) {
 					list->controller()->show(Box(