Re: updated ffx -- file dialog

[Günter Milde <milde@xxxxxxxxxxxxxxxxxxxx>]

On Thu, Jun 19, 2003 at 04:07:30PM +0200, Klaus Schmid wrote:
> > To make the recent files capable for multi sessions, it seems there is no
> > other way to read/write from/on disk at each reference...
> 
> Here my current opinion, yet only as pseudo-code:
...
> Comments, improvements or bugfixes welcome.

> This should be self-explanatory, if not please read
> this or complain and I will try to explain:
> 
>     file:          file in which file strings are saved
>     buffer:        buffer in which file strings are saved
>     xxx_list:      list of file strings from xxx
>     load file:     load file into buffer (read_file)
>     read xxx_list: read xxx_list from buffer
>     merge xxx:     merge xxx to current list
>     write buffer:  write current list to buffer
>     write file:    write buffer to file (save_buffer)

So here comes my idea:
 
custom_var recent_sync_level
      0 do not sync
      1 synchronize at minimum (startup, exit)
      2 synchronize normally (startup, popu-menu-function, exit)

I still prefer to go without a buffer by saving the last access
time to a variable when reading the file to a list. This way
file_changed_on_disk could be replaced with a list_changed_on_disk function.

merge_lists would do a merge of the list in memory with the list in the file.
Maybe there could be one function for read_file_to_list and merge_lists, as
at startup we have an empty list.
 
Actions at different places:

at startup  % there is no recent-files list yet 
   read_file_to_list

% assume that there is no load/save action in another jed 
% while the File>Recent_Files popup is open

before file_dialog
   if sync_level>1 and list_changed_on_disk
      merge_lists
      
after file_load/save % also without File dialog
   list_changed = move_choosen_entry_to_top()
   if (sync_level>1 and list_changed)
      merge_lists
      write_list_to_file
      
on exit
   if (sync_level and list_changed_on_disk)
      merge_lists
   write_list_to_file

% Every time a file is opened or saved, it is put to position 1 in the list
% and eventually deleted from a later position. (insert_or_move_to_top).
% With sync_level == 2, there should be no need to have the touch-time on
% the list items. merge_lists could find out the right sort order by 
% matching the lists.

Günter

-- 
Milde at ife.et.tu-dresden.de

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