Native notifications switched off by default. Libnotify supported.

Telegram/SourceFiles/platform/linux/main_window_linux.cpp

@@ -22,6 +22,7 @@ Copyright (c) 2014-2016 John Preston, https://desktop.telegram.org
 #include "platform/linux/main_window_linux.h"
 
 #include "platform/linux/linux_libs.h"
+#include "platform/platform_notifications_manager.h"
 #include "mainwindow.h"
 #include "application.h"
 #include "lang.h"
@@ -355,6 +356,10 @@ void MainWindow::psUpdateCounter() {
 	}
 }
 
+bool MainWindow::psHasNativeNotifications() {
+	return Notifications::supported();
+}
+
 void MainWindow::LibsLoaded() {
 	QString cdesktop = QString(getenv("XDG_CURRENT_DESKTOP")).toLower();
 	noQtTrayIcon = (cdesktop == qstr("pantheon")) || (cdesktop == qstr("gnome"));