From a940089a8f2af58b14b4bfa76db23a199b65a04e Mon Sep 17 00:00:00 2001
From: David Faure <faure@kde.org>
Date: Fri, 26 Aug 2016 09:01:21 +0200
Subject: [PATCH] Fix crash when no QApplication is available.

This happens when QtCreator launches qmlplugindump.
Testcase: qmlplugindump -nonrelocatable org.kde.analitza 1.1
or qmlplugindump -nonrelocatable org.kde.okular 2.0

REVIEW: 128767
---
 .../plasmacomponents/qmenu.cpp                | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

diff --git a/src/declarativeimports/plasmacomponents/qmenu.cpp b/src/declarativeimports/plasmacomponents/qmenu.cpp
index c6b59a87e..fc07a09c9 100644
--- a/src/declarativeimports/plasmacomponents/qmenu.cpp
+++ b/src/declarativeimports/plasmacomponents/qmenu.cpp
@@ -19,6 +19,7 @@
 
 #include "qmenu.h"
 
+#include <QApplication>
 #include <QDebug>
 #include <QQuickWindow>
 #include <QQuickItem>
@@ -27,15 +28,18 @@
 #include "plasmacomponentsplugin.h"
 QMenuProxy::QMenuProxy(QObject *parent)
     : QObject(parent),
+      m_menu(Q_NULLPTR),
       m_status(DialogStatus::Closed),
       m_placement(Plasma::Types::LeftPosedTopAlignedPopup)
 {
-    m_menu = new QMenu(0);
-    connect(m_menu, &QMenu::triggered, this, &QMenuProxy::itemTriggered);
-    connect(m_menu, &QMenu::aboutToHide, [ = ]() {
-        m_status = DialogStatus::Closed;
-        emit statusChanged();
-    });
+    if (qobject_cast<QApplication *>(QCoreApplication::instance())) {
+        m_menu = new QMenu(0);
+        connect(m_menu, &QMenu::triggered, this, &QMenuProxy::itemTriggered);
+        connect(m_menu, &QMenu::aboutToHide, [ = ]() {
+                m_status = DialogStatus::Closed;
+                emit statusChanged();
+        });
+    }
 }
 
 QMenuProxy::~QMenuProxy()
@@ -105,6 +109,9 @@ void QMenuProxy::setVisualParent(QObject *parent)
 
 QWindow *QMenuProxy::transientParent()
 {
+    if (!m_menu) {
+        return Q_NULLPTR;
+    }
     return m_menu->windowHandle()->transientParent();
 }