Suggest to hide pinned message instead of unpin

Telegram/Resources/langs/lang.strings

@@ -2481,4 +2481,6 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 "ktg_settings_messages" = "Messages";
 
+"ktg_hide_pinned_message" = "Hide";
+
 // Keys finished

Telegram/Resources/langs/rewrites/ru.json

@@ -108,5 +108,6 @@
 	"ktg_settings_filters_hide_folder_names": "Компактные папки",
 	"ktg_settings_top_bar_mute": "Уведомления вверху профиля",
 	"ktg_settings_messages": "Сообщения",
-	"ktg_settings_filters_hide_all": "Скрыть папку «Все чаты»"
+	"ktg_settings_filters_hide_all": "Скрыть папку «Все чаты»",
+	"ktg_hide_pinned_message": "Скрыть"
 }

Telegram/SourceFiles/boxes/confirm_box.cpp

@@ -13,6 +13,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "apiwrap.h"
 #include "history/history.h"
 #include "history/history_item.h"
+#include "history/history_widget.h"
 #include "ui/widgets/checkbox.h"
 #include "ui/widgets/buttons.h"
 #include "ui/widgets/labels.h"
@@ -493,6 +494,73 @@ bool PinMessageBox::pinFail(const RPCError &error) {
 	return true;
 }
 
+UnpinMessageBox::UnpinMessageBox(
+	QWidget*,
+	not_null<PeerData*> peer)
+: _peer(peer)
+, _text(this, tr::lng_pinned_unpin_sure(tr::now), st::boxLabel) {
+}
+
+void UnpinMessageBox::prepare() {
+	addLeftButton(tr::ktg_hide_pinned_message(), [this] { hideMessage(); });
+
+	addButton(tr::lng_pinned_unpin(), [this] { unpinMessage(); });
+	addButton(tr::lng_cancel(), [this] { closeBox(); });
+
+	auto height = st::boxPadding.top() + _text->height() + st::boxPadding.bottom();
+	setDimensions(st::boxWidth, height);
+}
+
+void UnpinMessageBox::resizeEvent(QResizeEvent *e) {
+	BoxContent::resizeEvent(e);
+	_text->moveToLeft(st::boxPadding.left(), st::boxPadding.top());
+}
+
+void UnpinMessageBox::keyPressEvent(QKeyEvent *e) {
+	if (e->key() == Qt::Key_Enter || e->key() == Qt::Key_Return) {
+		unpinMessage();
+	} else if (e->key() == Qt::Key_Backspace) {
+		hideMessage();
+	} else {
+		BoxContent::keyPressEvent(e);
+	}
+}
+
+void UnpinMessageBox::unpinMessage() {
+	if (_requestId) return;
+
+	_requestId = MTP::send(
+		MTPmessages_UpdatePinnedMessage(
+			MTP_flags(0),
+			_peer->input,
+			MTP_int(0)),
+		rpcDone(&UnpinMessageBox::unpinDone),
+		rpcFail(&UnpinMessageBox::unpinFail));
+}
+
+void UnpinMessageBox::hideMessage() {
+	if (_requestId) return;
+
+	auto hidden = HistoryWidget::switchPinnedHidden(_peer, true);
+	if (hidden) {
+		Notify::peerUpdatedDelayed(
+			_peer,
+			Notify::PeerUpdate::Flag::PinnedMessageChanged);
+	}
+	Ui::hideLayer();
+}
+
+void UnpinMessageBox::unpinDone(const MTPUpdates &updates) {
+	_peer->session().api().applyUpdates(updates);
+	Ui::hideLayer();
+}
+
+bool UnpinMessageBox::unpinFail(const RPCError &error) {
+	if (MTP::isDefaultHandledError(error)) return false;
+	Ui::hideLayer();
+	return true;
+}
+
 DeleteMessagesBox::DeleteMessagesBox(
 	QWidget*,
 	not_null<HistoryItem*> item,

Telegram/SourceFiles/boxes/confirm_box.h

@@ -149,6 +149,30 @@ private:
 
 };
 
+class UnpinMessageBox : public Ui::BoxContent, public RPCSender {
+public:
+	UnpinMessageBox(QWidget*, not_null<PeerData*> peer);
+
+protected:
+	void prepare() override;
+
+	void resizeEvent(QResizeEvent *e) override;
+	void keyPressEvent(QKeyEvent *e) override;
+
+private:
+	void unpinMessage();
+	void hideMessage();
+	void unpinDone(const MTPUpdates &updates);
+	bool unpinFail(const RPCError &error);
+
+	not_null<PeerData*> _peer;
+
+	object_ptr<Ui::FlatLabel> _text;
+
+	mtpRequestId _requestId = 0;
+
+};
+
 class DeleteMessagesBox : public Ui::BoxContent, public RPCSender {
 public:
 	DeleteMessagesBox(

Telegram/SourceFiles/history/history_widget.cpp

@@ -6187,21 +6187,7 @@ void HistoryWidget::unpinMessage(FullMsgId itemId) {
 		return;
 	}
 
-	Ui::show(Box<ConfirmBox>(tr::lng_pinned_unpin_sure(tr::now), tr::lng_pinned_unpin(tr::now), crl::guard(this, [=] {
+	Ui::show(Box<UnpinMessageBox>(peer));
-		peer->clearPinnedMessage();
-
-		Ui::hideLayer();
-		MTP::send(
-			MTPmessages_UpdatePinnedMessage(
-				MTP_flags(0),
-				peer->input,
-				MTP_int(0)),
-			rpcDone(&HistoryWidget::unpinDone));
-	})));
-}
-
-void HistoryWidget::unpinDone(const MTPUpdates &updates) {
-	session().api().applyUpdates(updates);
 }
 
 void HistoryWidget::hidePinnedMessage(bool force) {

Telegram/SourceFiles/history/history_widget.h

@@ -540,7 +540,6 @@ private:
 	void updatePinnedBar(bool force = false);
 	bool pinnedMsgVisibilityUpdated();
 	void destroyPinnedBar();
-	void unpinDone(const MTPUpdates &updates);
 
 	void sendInlineResult(
 		not_null<InlineBots::Result*> result,