code: function _handleActiveEditorChange(event, current, previous) {
          if (current) { // Handle only full editors
              if (_mrofList.length === 0) {
                  _initRecentFilesList();
              }
  
              var file = current.document.file;
              var paneId = current._paneId;
              _addToMROFList(file, paneId, current.getCursorPos(true, "first"));
          }
  
          if (previous) { // Capture the last know cursor position
              _updateCursorPosition(previous.document.file.fullPath, previous._paneId, previous.getCursorPos(true, "first"));
          }
      }
docs: Handle Active Editor change to update mrof information