[Osr-101] Hints for preferred widget

[Thomas Comiotto]

Hi all,

Currently only one editing mode is taken into account by neutron: 
WYSIWYG editing configured by xsl files (I don't count source editing). 
However, there are xml resources where some different editing mode 
would be more appropriate. For instance database records and similar 
doctypes, where users might expect a GUI that allows you to navigate 
the document node tree by some tree widget and fill out node values by 
using form fields, apply filtering on document nodes, step forth and 
back from node to node etc..

Since the client can't make a reliable decision on which editing mode 
to use by looking at the mime-type or file endings I think we have to 
add some hinting directives for that.

List of possible editing modes:

  - WYSIWYG based on xslt
  - WYSIWYG based on CSS
  - TreeAndForm
  - DatabaseEntries (form field for every entry, widget to step 
forward/back entries, widget to add/remove entries. Needs an xpointer 
to some entry)
  - SimpleForm (for name/value paired properties or simple metadata)
  - add your editing mode here

Of course the server also could provide special xslt's for all 
mentioned editing scenarios - but that would be a hassle to write and 
in all form based variants the actual styling of the data is of no 
importance for the editing process. Therefore it should be provided by 
the client.

--
Bests
Thomas