filehandler
=================




















.. js:class:: FileHandler()

   The file handler for vispa. One can add :js:class:`MenuItem` like objects, which can be
   used within a menu (like headless) or directly. :js:func:`getFileHandlers` then returns all
   registered file handlers with the property *value* set to the filename, which is given to
   the function as parameter. The handlers themself should update themself via the filename.
   Classes deriving from :js:class:`BaseView` can set the member property *fileHandlers*,
   which must be a list of :js:class:`MenuItem` like objects. These are automatically added to
   the file handler. Additionally. :js:class:`BaseView` adds :js:func:`spawn` to the handler
   so that inside :js:func:`callback` *this.spawn* can be used to easily spawn an instance.
















   .. js:function:: addFileHandler(key, handler)

      Add a single file handler with key.







   .. js:function:: addFileHandlers(handlers)

      Add a dict of file handlers.






   .. js:function:: getFileHandlers(file)

      Get all file handlers. Each is updated previously with *handler.value = file*.










   .. js:function:: getDefaultFileHandler(file)

      Get the file handler with the highest position or *null* if it has no callback, e.g. for
      a divider or a header.
















   .. js:function:: runDefaultHandler(file, view)

      Runs the default file handler if available for the given view.

      :param String file: The file to run the handler for.
      :param BaseView view: The view that intends to open the file.