Add "Open in new window" to context menu.

Telegram/SourceFiles/window/window_peer_menu.cpp

@@ -41,6 +41,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "ui/widgets/menu/menu_add_action_callback_factory.h"
 #include "ui/layers/generic_box.h"
 #include "ui/toasts/common_toasts.h"
+#include "ui/delayed_activation.h"
 #include "main/main_session.h"
 #include "main/main_session_settings.h"
 #include "menu/menu_mute.h"
@@ -81,6 +82,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "core/application.h"
 #include "export/export_manager.h"
 #include "boxes/peers/edit_peer_info_box.h"
+#include "styles/style_chat.h"
 #include "styles/style_layers.h"
 #include "styles/style_boxes.h"
 #include "styles/style_window.h" // st::windowMinWidth
@@ -254,6 +256,7 @@ private:
 	void addToggleMuteSubmenu(bool addSeparator);
 	void addSupportInfo();
 	void addInfo();
+	void addNewWindow();
 	void addToggleFolder();
 	void addToggleUnreadMark();
 	void addToggleArchive();
@@ -597,6 +600,25 @@ void Filler::addToggleUnreadMark() {
 	}, (unread ? &st::menuIconMarkRead : &st::menuIconMarkUnread));
 }
 
+void Filler::addNewWindow() {
+	const auto history = _request.key.history();
+	if (!_peer
+		|| _topic
+		|| _peer->isForum()
+		|| (history
+			&& history->useTopPromotion()
+			&& !history->topPromotionType().isEmpty())) {
+		return;
+	}
+	const auto peer = _peer;
+	const auto controller = _controller;
+	_addAction(tr::lng_context_new_window(tr::now), [=] {
+		Ui::PreventDelayedActivation();
+		controller->showInNewWindow(peer);
+	}, &st::menuIconNewWindow);
+	AddSeparatorAndShiftUp(_addAction);
+}
+
 void Filler::addToggleArchive() {
 	if (!_peer || _topic) {
 		return;
@@ -1162,6 +1184,7 @@ void Filler::addVideoChat() {
 }
 
 void Filler::fillContextMenuActions() {
+	addNewWindow();
 	addHidePromotion();
 	addToggleArchive();
 	addTogglePin();
@@ -2413,4 +2436,17 @@ void MarkAsReadThread(not_null<Data::Thread*> thread) {
 	}
 }
 
+void AddSeparatorAndShiftUp(const PeerMenuCallback &addAction) {
+	addAction({ .isSeparator = true });
+
+	const auto &st = st::popupMenuExpandedSeparator.menu;
+	const auto shift = st::popupMenuExpandedSeparator.scrollPadding.top()
+		+ st.itemPadding.top()
+		+ st.itemStyle.font->height
+		+ st.itemPadding.bottom()
+		+ st.separator.padding.top()
+		+ st.separator.width / 2;
+	addAction({ .addTopShift = -shift });
+}
+
 } // namespace Window