Mention user from context menu

Telegram/Resources/langs/lang.strings

@@ -2634,4 +2634,6 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "ktg_forward_subtitle_group_all_media" = "as albums";
 "ktg_forward_subtitle_separate_messages" = "one by one";
 
+"ktg_profile_mention_user" = "Mention user";
+
 // Keys finished

Telegram/Resources/langs/rewrites/en.json

@@ -183,6 +183,7 @@
 	"ktg_forward_subtitle_uncaptioned": "uncaptioned",
 	"ktg_forward_subtitle_group_all_media": "as albums",
 	"ktg_forward_subtitle_separate_messages": "one by one",
+	"ktg_profile_mention_user": "Mention user",
 
 	// This string should always be last for better work with Git.
 	"dummy_last_string": ""

Telegram/Resources/langs/rewrites/it.json

@@ -183,6 +183,7 @@
 	"ktg_forward_subtitle_uncaptioned": "uncaptioned",
 	"ktg_forward_subtitle_group_all_media": "as albums",
 	"ktg_forward_subtitle_separate_messages": "one by one",
+	"ktg_profile_mention_user": "Mention user",
 
 	// This string should always be last for better work with Git.
 	"dummy_last_string": ""

Telegram/Resources/langs/rewrites/pl.json

@@ -191,6 +191,7 @@
 	"ktg_forward_subtitle_uncaptioned": "uncaptioned",
 	"ktg_forward_subtitle_group_all_media": "as albums",
 	"ktg_forward_subtitle_separate_messages": "one by one",
+	"ktg_profile_mention_user": "Mention user",
 
 	// This string should always be last for better work with Git.
 	"dummy_last_string": ""

Telegram/Resources/langs/rewrites/pt-br.json

@@ -183,6 +183,7 @@
 	"ktg_forward_subtitle_uncaptioned": "uncaptioned",
 	"ktg_forward_subtitle_group_all_media": "as albums",
 	"ktg_forward_subtitle_separate_messages": "one by one",
+	"ktg_profile_mention_user": "Mention user",
 
 	// This string should always be last for better work with Git.
 	"dummy_last_string": ""

Telegram/Resources/langs/rewrites/ru.json

@@ -190,6 +190,7 @@
 	"ktg_forward_subtitle_uncaptioned": "без подписей",
 	"ktg_forward_subtitle_group_all_media": "альбомами",
 	"ktg_forward_subtitle_separate_messages": "по одному",
+	"ktg_profile_mention_user": "Упомянуть пользователя",
 
 	// This string should always be last for better work with Git.
 	"dummy_last_string": ""

Telegram/Resources/langs/rewrites/tr.json

@@ -183,6 +183,7 @@
 	"ktg_forward_subtitle_uncaptioned": "uncaptioned",
 	"ktg_forward_subtitle_group_all_media": "as albums",
 	"ktg_forward_subtitle_separate_messages": "one by one",
+	"ktg_profile_mention_user": "Mention user",
 
 	// This string should always be last for better work with Git.
 	"dummy_last_string": ""

Telegram/Resources/langs/rewrites/uk.json

@@ -190,6 +190,7 @@
 	"ktg_forward_subtitle_uncaptioned": "uncaptioned",
 	"ktg_forward_subtitle_group_all_media": "as albums",
 	"ktg_forward_subtitle_separate_messages": "one by one",
+	"ktg_profile_mention_user": "Mention user",
 
 	// This string should always be last for better work with Git.
 	"dummy_last_string": ""

Telegram/SourceFiles/boxes/peers/edit_participants_box.cpp

@@ -17,6 +17,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "facades.h"
 #include "apiwrap.h"
 #include "lang/lang_keys.h"
+#include "mainwindow.h"
 #include "mainwidget.h"
 #include "dialogs/dialogs_indexed_list.h"
 #include "data/data_peer_values.h"
@@ -1426,6 +1427,17 @@ base::unique_qptr<Ui::PopupMenu> ParticipantsBoxController::rowContextMenu(
 		}
 		return result;
 	}
+	if (const auto window = App::wnd()) {
+		if (const auto mainwidget = window->sessionContent()) {
+			if (const auto openedPeer = mainwidget->peer()) {
+				if (openedPeer->canWrite()) {
+					result->addAction(
+						tr::ktg_profile_mention_user(tr::now),
+						crl::guard(this, [=] { mainwidget->mentionUser(user); }));
+				}
+			}
+		}
+	}
 	if (_additional.canAddOrEditAdmin(user)) {
 		const auto isAdmin = _additional.isCreator(user)
 			|| _additional.adminRights(user).has_value();

Telegram/SourceFiles/history/history_widget.cpp

@@ -5690,6 +5690,25 @@ bool HistoryWidget::sendExistingPhoto(
 	return true;
 }
 
+void HistoryWidget::mentionUser(PeerData *peer) {
+	if (!peer || !peer->isUser()) {
+		return;
+	}
+
+	const auto user = peer->asUser();
+	QString replacement, entityTag;
+	if (user->username.isEmpty()) {
+		replacement = user->firstName;
+		if (replacement.isEmpty()) {
+			replacement = user->name;
+		}
+		entityTag = PrepareMentionTag(user);
+	} else {
+		replacement = '@' + user->username;
+	}
+	_field->insertTag(replacement, entityTag);
+}
+
 void HistoryWidget::showInfoTooltip(
 		const TextWithEntities &text,
 		Fn<void()> hiddenCallback) {

Telegram/SourceFiles/history/history_widget.h

@@ -261,6 +261,8 @@ public:
 		not_null<PhotoData*> photo,
 		Api::SendOptions options);
 
+	void mentionUser(PeerData *peer);
+
 	void showInfoTooltip(
 		const TextWithEntities &text,
 		Fn<void()> hiddenCallback);

Telegram/SourceFiles/mainwidget.cpp

@@ -2578,6 +2578,14 @@ void MainWidget::searchInChat(Dialogs::Key chat) {
 	}
 }
 
+void MainWidget::mentionUser(PeerData *peer) {
+	if (!_history->peer() || !_history->peer()->canWrite()) {
+		return;
+	}
+
+	_history->mentionUser(peer);
+}
+
 void MainWidget::openPeerByName(
 		const QString &username,
 		MsgId msgId,

Telegram/SourceFiles/mainwidget.h

@@ -220,6 +220,8 @@ public:
 
 	void searchInChat(Dialogs::Key chat);
 
+	void mentionUser(PeerData *peer);
+
 	void ui_showPeerHistory(
 		PeerId peer,
 		const SectionShow &params,