From fc74840b55f16620c4a24da52e94db69fc0fb605 Mon Sep 17 00:00:00 2001
From: John Preston <johnprestonmail@gmail.com>
Date: Fri, 19 Sep 2025 14:29:33 +0400
Subject: [PATCH] Apply tags filtering and length limit.

---
 .../calls/group/calls_group_message_field.cpp | 45 ++++++++++++++++---
 .../calls/group/calls_group_message_field.h   |  1 +
 .../calls/group/calls_group_messages.cpp      | 14 +++++-
 3 files changed, 54 insertions(+), 6 deletions(-)

diff --git a/Telegram/SourceFiles/calls/group/calls_group_message_field.cpp b/Telegram/SourceFiles/calls/group/calls_group_message_field.cpp
index c9267e300a..f946c1ec4f 100644
--- a/Telegram/SourceFiles/calls/group/calls_group_message_field.cpp
+++ b/Telegram/SourceFiles/calls/group/calls_group_message_field.cpp
@@ -34,6 +34,12 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "styles/style_media_view.h"
 
 namespace Calls::Group {
+namespace {
+
+constexpr auto kWarnLimit = 24;
+constexpr auto kErrorLimit = 99;
+
+} // namespace
 
 MessageField::MessageField(
 	not_null<QWidget*> parent,
@@ -41,7 +47,8 @@ MessageField::MessageField(
 	PeerData *peer)
 : _parent(parent)
 , _show(std::move(show))
-, _wrap(std::make_unique<Ui::RpWidget>(_parent)) {
+, _wrap(std::make_unique<Ui::RpWidget>(_parent))
+, _limit(128) {
 	createControls(peer);
 }
 
@@ -54,6 +61,7 @@ void MessageField::createControls(PeerData *peer) {
 		st.field,
 		Ui::InputField::Mode::MultiLine,
 		tr::lng_message_ph());
+	_field->setMaxLength(_limit + kErrorLimit);
 	_field->setMinHeight(
 		st::historySendSize.height() - 2 * st::historySendPadding);
 	_field->setMaxHeight(st::historyComposeFieldMaxHeight);
@@ -75,6 +83,13 @@ void MessageField::createControls(PeerData *peer) {
 		},
 		.allowPremiumEmoji = allow,
 		.fieldStyle = &st.files.caption,
+		.allowMarkdownTags = {
+			Ui::InputField::kTagBold,
+			Ui::InputField::kTagItalic,
+			Ui::InputField::kTagUnderline,
+			Ui::InputField::kTagStrikeOut,
+			Ui::InputField::kTagSpoiler,
+		},
 	});
 	Ui::Emoji::SuggestionsController::Init(
 		_parent,
@@ -152,12 +167,20 @@ void MessageField::createControls(PeerData *peer) {
 			st::historySendPadding,
 			st::historySendPadding,
 			newWidth);
-		_send->moveToRight(0, 0, newWidth);
-		_emojiToggle->moveToRight(_send->width(), 0, newWidth);
 		updateWrapSize(newWidth);
 	}, _lifetime);
 
-	_field->heightValue() | rpl::start_with_next([=](int height) {
+	rpl::combine(
+		_width.value(),
+		_field->heightValue()
+	) | rpl::start_with_next([=](int width, int height) {
+		if (width <= 0) {
+			return;
+		}
+		const auto minHeight = st::historySendSize.height()
+			- 2 * st::historySendPadding;
+		_send->moveToRight(0, height - minHeight, width);
+		_emojiToggle->moveToRight(_send->width(), height - minHeight, width);
 		updateWrapSize();
 	}, _lifetime);
 
@@ -165,11 +188,23 @@ void MessageField::createControls(PeerData *peer) {
 		_closeRequests.fire({});
 	}, _lifetime);
 
+	const auto updateLimitPosition = [=](QSize parent, QSize label) {
+		const auto skip = st::historySendPadding;
+		return QPoint(parent.width() - label.width() - skip, skip);
+	};
+	Ui::AddLengthLimitLabel(_field, _limit, {
+		.customParent = _wrap.get(),
+		.customUpdatePosition = updateLimitPosition,
+	});
+
 	rpl::merge(
 		_field->submits() | rpl::to_empty,
 		_send->clicks() | rpl::to_empty
 	) | rpl::start_with_next([=] {
-		_submitted.fire(_field->getTextWithAppliedMarkdown());
+		auto text = _field->getTextWithTags();
+		if (text.text.size() <= _limit) {
+			_submitted.fire(std::move(text));
+		}
 	}, _lifetime);
 }
 
diff --git a/Telegram/SourceFiles/calls/group/calls_group_message_field.h b/Telegram/SourceFiles/calls/group/calls_group_message_field.h
index 64c0089e08..58173c419a 100644
--- a/Telegram/SourceFiles/calls/group/calls_group_message_field.h
+++ b/Telegram/SourceFiles/calls/group/calls_group_message_field.h
@@ -58,6 +58,7 @@ private:
 	const std::shared_ptr<ChatHelpers::Show> _show;
 	const std::unique_ptr<Ui::RpWidget> _wrap;
 
+	int _limit = 0;
 	Ui::InputField *_field = nullptr;
 	Ui::SendButton *_send = nullptr;
 	Ui::EmojiButton *_emojiToggle = nullptr;
diff --git a/Telegram/SourceFiles/calls/group/calls_group_messages.cpp b/Telegram/SourceFiles/calls/group/calls_group_messages.cpp
index 2881e062e8..ab9d56eade 100644
--- a/Telegram/SourceFiles/calls/group/calls_group_messages.cpp
+++ b/Telegram/SourceFiles/calls/group/calls_group_messages.cpp
@@ -17,6 +17,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "data/data_user.h"
 #include "main/main_session.h"
 #include "mtproto/sender.h"
+#include "ui/text/text_utilities.h"
 #include "ui/ui_utility.h"
 
 namespace Calls::Group {
@@ -160,7 +161,18 @@ void Messages::received(
 		.id = id,
 		.date = base::unixtime::now(),
 		.peer = peer->owner().peer(peerFromMTP(from)),
-		.text = Api::ParseTextWithEntities(&peer->session(), message),
+		.text = Ui::Text::Filtered(
+			Api::ParseTextWithEntities(&peer->session(), message),
+			{
+				EntityType::Code,
+				EntityType::Bold,
+				EntityType::Semibold,
+				EntityType::Spoiler,
+				EntityType::StrikeOut,
+				EntityType::Underline,
+				EntityType::Italic,
+				EntityType::CustomEmoji,
+			}),
 	});
 	checkDestroying(true);
 }