moved QmlExpression back to header

Author: signedav

python/gui/auto_generated/editorwidgets/qgsqmlwidgetwrapper.sip.in

@@ -58,6 +58,27 @@ passes the ``feature`` into the context property of the widget
 
 };
 
+class QmlExpression : QObject
+{
+%Docstring
+To pass the QgsExpression functionality and it's context to the context of the QQuickWidget
+
+.. versionadded:: 3.4
+%End
+
+%TypeHeaderCode
+#include "qgsqmlwidgetwrapper.h"
+%End
+  public:
+    void setExpressionContext( const QgsExpressionContext &context );
+
+    QVariant evaluate( const QString &expression ) const;
+%Docstring
+evaluates the value regarding the /a expression and the context
+%End
+
+};
+
 /************************************************************************
  * This file has been generated automatically from                      *
  *                                                                      *

src/gui/editorwidgets/qgsqmlwidgetwrapper.cpp

@@ -20,26 +20,6 @@
 #include <QQmlContext>
 #include <QQmlEngine>
 
-/**
- * \ingroup gui
- * To pass the QgsExpression functionality and it's context to the context of the QQuickWidget
- * \since QGIS 3.4
- */
-class GUI_EXPORT QmlExpression : public QObject
-{
-    Q_OBJECT
-
-  public:
-    void setExpressionContext( const QgsExpressionContext &context );
-
-    //! evaluates the value regarding the /a expression and the context
-    Q_INVOKABLE QVariant evaluate( const QString &expression ) const;
-
-  private:
-    QgsExpressionContext mExpressionContext;
-};
-
-
 QgsQmlWidgetWrapper::QgsQmlWidgetWrapper( QgsVectorLayer *layer, QWidget *editor, QWidget *parent )
   : QgsWidgetWrapper( layer, editor, parent )
 {

src/gui/editorwidgets/qgsqmlwidgetwrapper.h

@@ -63,4 +63,23 @@ class GUI_EXPORT QgsQmlWidgetWrapper : public QgsWidgetWrapper
     QQuickWidget *mWidget = nullptr;
 };
 
+/**
+ * \ingroup gui
+ * To pass the QgsExpression functionality and it's context to the context of the QQuickWidget
+ * \since QGIS 3.4
+ */
+class GUI_EXPORT QmlExpression : public QObject
+{
+    Q_OBJECT
+
+  public:
+    void setExpressionContext( const QgsExpressionContext &context );
+
+    //! evaluates the value regarding the /a expression and the context
+    Q_INVOKABLE QVariant evaluate( const QString &expression ) const;
+
+  private:
+    QgsExpressionContext mExpressionContext;
+};
+
 #endif // QGSQMLWIDGETWRAPPER_H