Function Field_Editing

Source/CursesDialog/form/frm_driver.c:2168–2209

--------------------------------------------------------------------------- | Facility : libnform | Function : static int Field_Editing( | int (* const fct) (FORM *), | FORM * form) | | Description : Generic routine for field editing requests. The driver | routines are only called for

|                                    int (* const fct) (FORM *),
|                                    FORM * form)
|   
|   Description   :  Generic routine for field editing requests. The driver
|                    routines are only called for editable fields, the
|                    _WINDOW_MODIFIED flag is set if editing occurred.
|                    This is somewhat special due to the overload semantics
|                    of the NEW_LINE and DEL_PREV requests.
|
|   Return Values :  Error code from low level drivers.
+--------------------------------------------------------------------------*/
static int Field_Editing(int (* const fct) (FORM *), FORM * form)
{
  int res = E_REQUEST_DENIED;

  /* We have to deal here with the specific case of the overloaded 
     behaviour of New_Line and Delete_Previous requests.
     They may end up in navigational requests if we are on the first
     character in a field. But navigation is also allowed on non-
     editable fields.
  */ 
  if ((fct==FE_Delete_Previous)            && 
      (form->opts & O_BS_OVERLOAD)         &&
      First_Position_In_Current_Field(form) )
    {
      res = Inter_Field_Navigation(FN_Previous_Field,form);
    }
  else
    {
      if (fct==FE_New_Line)
        {
          if ((form->opts & O_NL_OVERLOAD)         &&
              First_Position_In_Current_Field(form))
            {
              res = Inter_Field_Navigation(FN_Next_Field,form);
            }
          else
            /* FE_New_Line deals itself with the _WINDOW_MODIFIED flag */
            res = fct(form);
        }
      else
        {
          /* From now on, everything must be editable */
          if (form->current->opts & O_EDIT)
            {
              res = fct(form);
              if (res==E_OK)