Make it possible for ContainmentInterface to deal with WrappedMimeData

This way it integrates properly with KDeclarative as well. This will need
to be extended in order to integrate QtQuick.DropArea.

src/scriptengines/qml/plasmoid/containmentinterface.cpp

@@ -311,6 +311,15 @@ QPointF ContainmentInterface::mapToApplet(AppletInterface *applet, int x, int y)
     return pos - applet->mapToScene(QPointF(0, 0));
 }
 
+void ContainmentInterface::processMimeData(QObject *mimeDataProxy, int x, int y)
+{
+    QMimeData* mime = qobject_cast<QMimeData*>(mimeDataProxy);
+    if (mime)
+        processMimeData(mime, x, y);
+    else
+        processMimeData(mimeDataProxy->property("mimeData").value<QMimeData*>(), x, y);
+}
+
 void ContainmentInterface::processMimeData(QMimeData *mimeData, int x, int y)
 {
     if (!mimeData) {

src/scriptengines/qml/plasmoid/containmentinterface.h

@@ -122,6 +122,11 @@ public:
      */
     Q_INVOKABLE void processMimeData(QMimeData *data, int x, int y);
 
+    /**
+     * Process the mime data arrived to a particular coordinate, either with a drag and drop or paste with middle mouse button
+     */
+    Q_INVOKABLE void processMimeData(QObject *data, int x, int y);
+
     /**
      * Search for a containment at those coordinates.
      * the coordinates are passed as local coordinates of *this* containment