code: def reload(self, index):
          
          finfo = self.data[index]
          txt, finfo.encoding = encoding.read(finfo.filename)
          finfo.lastmodified = QFileInfo(finfo.filename).lastModified()
          position = finfo.editor.get_position('cursor')
          finfo.editor.set_text(txt)
          finfo.editor.document().setModified(False)
          finfo.editor.document().changed_since_autosave = False
          finfo.editor.set_cursor_position(position)
  
          #XXX CodeEditor-only: re-scan the whole text to rebuild outline
          # explorer data from scratch (could be optimized because
          # rehighlighting text means searching for all syntax coloring
          # patterns instead of only searching for class/def patterns which
          # would be sufficient for outline explorer data.
          finfo.editor.rehighlight()
  
          self._refresh_outlineexplorer(index)
docs: Reload file from disk