FileType Field Widgets..

1. Delcaring your widget.

  mymodule.moldule:hook_widget_info(); -- declare you widget.

2. Implementing widget hooks:
  mymodule.module:hook_widget_settings()
  mymodule.module:hook_widget(); 
    -- only needs to pass through to filefield_* functions.
    -- unless you know what you're doing and want to 
    -- override.


2. Implementing your widgets callbacks...
  {$widget['type']}_widget.inc:
    -- will be dynamically included by filefield_widget_settings();
      {$widget['type']}_widget_settings_form($widget)
        -- return your form array
      {$widget['type']}_widget_settings_validate($widget)
      {$widget['type']}_widget_settings_save($widget)
   
3. Implementing your widget...
   In D6 and CCK 2 widgets are form elements... 

   #value callback
   #process
   #after_build

   AHAH?

   Ajaxification.


4. Where to store miscellaneous data... in 'data'.






5. FileField Widget Setting User Interface Guidelines...
  form element weights. - group field sets at the end..
  solo items at the top, and put CCK and FileField settings
  before widget specific settings.
 
  0 = CCK added form elements.
  1 = FileField Common non-fieldset form elements.
  2 = Widget Specific non-fieldset form elements.
 
  6 = FileField fieldset form elements.
  8 = Widget Specific Fieldset form elements.