From 3363879c547c79744f2d259513feda88e83c603e Mon Sep 17 00:00:00 2001
From: Nate Weibley <nate.weibley@prioria.com>
Date: Thu, 19 Jan 2017 12:37:15 -0500
Subject: [PATCH] Defer joystick probe until after MainWindow is created

---
 src/Joystick/JoystickManager.cc | 3 +++
 src/Joystick/JoystickManager.h  | 3 +++
 src/QGCApplication.cc           | 3 +++
 3 files changed, 9 insertions(+)

diff --git a/src/Joystick/JoystickManager.cc b/src/Joystick/JoystickManager.cc
index 1ef0fc6..a8d3f6f 100644
--- a/src/Joystick/JoystickManager.cc
+++ b/src/Joystick/JoystickManager.cc
@@ -53,7 +53,10 @@ void JoystickManager::setToolbox(QGCToolbox *toolbox)
     _multiVehicleManager = _toolbox->multiVehicleManager();
 
     QQmlEngine::setObjectOwnership(this, QQmlEngine::CppOwnership);
+}
 
+void JoystickManager::discoverJoysticks()
+{
 #ifdef __sdljoystick__
     _name2JoystickMap = JoystickSDL::discover(_multiVehicleManager);
 #elif defined(__android__)
diff --git a/src/Joystick/JoystickManager.h b/src/Joystick/JoystickManager.h
index 26cf009..8460b75 100644
--- a/src/Joystick/JoystickManager.h
+++ b/src/Joystick/JoystickManager.h
@@ -48,6 +48,9 @@ public:
     // Override from QGCTool
     virtual void setToolbox(QGCToolbox *toolbox);
 
+public slots:
+    void discoverJoysticks();
+
 signals:
     void activeJoystickChanged(Joystick* joystick);
     void activeJoystickNameChanged(const QString& name);
diff --git a/src/QGCApplication.cc b/src/QGCApplication.cc
index 8e22955..d436f68 100644
--- a/src/QGCApplication.cc
+++ b/src/QGCApplication.cc
@@ -429,6 +429,9 @@ bool QGCApplication::_initForNormalAppBoot(void)
     // Load known link configurations
     toolbox()->linkManager()->loadLinkConfigurationList();
 
+    // Probe for joysticks - TODO: manage on a timer or use events to deal with hotplug
+    toolbox()->joystickManager()->discoverJoysticks();
+
     if (_settingsUpgraded) {
         settings.clear();
         settings.setValue(_settingsVersionKey, QGC_SETTINGS_VERSION);