QmlApp template: Use new 4.7.1 API to enable qml debugging

Qml debugging is now disabled by default, and has to be enabled
explicitly (b2016bbfc9). This has to be done before the
QDView/QDEngine is instantiated ...

The patch introduces a static create method to QmlApplicationViewer,
so that the setup can be hidden from the users main file.

Reviewed-by: Alessandro Portale

share/qtcreator/qml/qmljsdebugger/include/qt_private/qdeclarativedebughelper_p.h

@@ -59,6 +59,10 @@ class QMLJSDEBUGGER_EXTERN QDeclarativeDebugHelper
 public:
     static QScriptEngine *getScriptEngine(QDeclarativeEngine *engine);
     static void setAnimationSlowDownFactor(qreal factor);
+
+    // Enables remote debugging functionality
+    // Only use this for debugging in a safe environment!
+    static void enableDebugging();
 };
 
 QT_END_NAMESPACE

share/qtcreator/templates/qmlapp/app.pro

@@ -20,7 +20,7 @@ DEFINES += NETWORKACCESS
 # TARGETUID3 #
 symbian:TARGET.UID3 = 0xE1111234
 
-# Define QMLJSDEBUGGER to allow debugging of QML
+# Define QMLJSDEBUGGER to allow debugging of QML in debug builds
 # (This might significantly increase build time)
 # DEFINES += QMLJSDEBUGGER
 

share/qtcreator/templates/qmlapp/qmlapplicationviewer/qmlapplicationviewer.cpp

@@ -16,6 +16,10 @@
 #include <QtDeclarative/QDeclarativeEngine>
 #include <QtDeclarative/QDeclarativeContext>
 
+#if defined(QMLJSDEBUGGER)
+#include <qt_private/qdeclarativedebughelper_p.h>
+#endif
+
 #if defined(QMLJSDEBUGGER) && !defined(NO_JSDEBUGGER)
 #include <jsdebuggeragent.h>
 #endif
@@ -30,6 +34,22 @@
 #include <aknappui.h>
 #endif // Q_OS_SYMBIAN && ORIENTATIONLOCK
 
+#if defined(QMLJSDEBUGGER)
+
+// Enable debugging before any QDeclarativeEngine is created
+struct QmlJsDebuggingEnabler
+{
+    QmlJsDebuggingEnabler()
+    {
+        QDeclarativeDebugHelper::enableDebugging();
+    }
+};
+
+// Execute code in constructor before first QDeclarativeEngine is instantiated
+static QmlJsDebuggingEnabler enableDebuggingHelper;
+
+#endif // QMLJSDEBUGGER
+
 class QmlApplicationViewerPrivate
 {
     QString mainQmlFile;

src/plugins/qt4projectmanager/wizards/qmlstandaloneapp.cpp

@@ -477,7 +477,7 @@ bool QmlStandaloneApp::updateFiles(const QList<QmlAppGeneratedFileInfo> &list, Q
     return true;
 }
 
-const int QmlStandaloneApp::StubVersion = 9;
+const int QmlStandaloneApp::StubVersion = 10;
 
 } // namespace Internal
 } // namespace Qt4ProjectManager