wpa_gui: Quiet mode - disable tray icon messages

If tray icon messages are perceived as disturbing, one can pass `-q`
parameter on the command line to disable them permanently.

Signed-off-by: Arkadiusz Bokowy <arkadiusz.bokowy@gmail.com>

wpa_supplicant/wpa_gui-qt4/wpagui.cpp

@@ -130,6 +130,7 @@ WpaGui::WpaGui(QApplication *_app, QWidget *parent, const char *, Qt::WFlags)
 	udr = NULL;
 	tray_icon = NULL;
 	startInTray = false;
+	quietMode = false;
 	ctrl_iface = NULL;
 	ctrl_conn = NULL;
 	monitor_conn = NULL;
@@ -234,7 +235,7 @@ void WpaGui::parse_argv()
 {
 	int c;
 	for (;;) {
-		c = getopt(qApp->argc(), qApp->argv(), "i:p:t");
+		c = getopt(qApp->argc(), qApp->argv(), "i:p:tq");
 		if (c < 0)
 			break;
 		switch (c) {
@@ -249,6 +250,9 @@ void WpaGui::parse_argv()
 		case 't':
 			startInTray = true;
 			break;
+		case 'q':
+			quietMode = true;
+			break;
 		}
 	}
 }
@@ -1336,7 +1340,7 @@ void WpaGui::showTrayMessage(QSystemTrayIcon::MessageIcon type, int sec,
 	if (!QSystemTrayIcon::supportsMessages())
 		return;
 
-	if (isVisible() || !tray_icon || !tray_icon->isVisible())
+	if (isVisible() || !tray_icon || !tray_icon->isVisible() || quietMode)
 		return;
 
 	tray_icon->showMessage(qAppName(), msg, type, sec * 1000);

wpa_supplicant/wpa_gui-qt4/wpagui.h

@@ -117,6 +117,7 @@ private:
 	void createTrayIcon(bool);
 	bool ackTrayIcon;
 	bool startInTray;
+	bool quietMode;
 
 	int openCtrlConnection(const char *ifname);