docs: def showMenu( self, pos ):
          """
          Popups a menu for this widget.
          """
          menu = QMenu(self)
          menu.setAttribute(Qt.WA_DeleteOnClose)
          menu.addAction('Clear').triggered.connect(self.clearFilepath)
          menu.addSeparator()
          menu.addAction('Copy Filepath').triggered.connect(self.copyFilepath)
          
          menu.exec_(self.mapToGlobal(pos))