How to create a custom widget to change the attribute of xml node in QT?

[pyara03]

I mean like when you click on one node let's takeelement ,image(kTuberling.svg)and let's say this is the line in the XML filethen I want on the widget area something likeI type imagefile ktuberling.svg (with the possibility to load from a file)and this changes depending on which element you clickPlease help I am struck here.