Don't set alert if window already focused

src/qml/Chat/Chat.qml

@@ -18,6 +18,7 @@ HPage {
     readonly property var roomInfo: Utils.getItem(
         modelSources[["Room", userId]] || [], "room_id", roomId
     ) || "waiting"
+
     onRoomInfoChanged: {
         if (roomInfo.left) {
             // The room will most likely be gone on client restart

src/qml/event_handlers.js

@@ -7,7 +7,9 @@ function onExitRequested(exitCode) {
 
 
 function onAlertRequested(msec) {
-    window.alert(msec)
+    if (Qt.application.state != Qt.ApplicationActive) {
+		window.alert(msec)
+	}
 }