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|
(*
A graphical frontend (handles backend notifications,
copy_in, copy_out, presentation of "select" result in tables)
To build prompt_gtk you need lablgtk 1.2
*)
open Printf
open GMain
open Postgresql
let _ =
if (Array.length Sys.argv <> 2) then (
eprintf "Usage: %s conninfo\n" Sys.argv.(0);
exit 1)
let conninfo = Sys.argv.(1)
let file_dialog title =
let name = ref "" in
let sel = GWindow.file_selection ~title ~modal:true () in
let cancel_callback () = sel#destroy (); Main.quit () in
let ok_callback () = name := sel#get_filename; cancel_callback () in
let _ = sel#ok_button#connect#clicked ~callback:ok_callback in
let _ = sel#cancel_button#connect#clicked ~callback:cancel_callback in
sel#show ();
Main.main ();
!name
let make_window title =
let window = GWindow.window ~title ~width:300 ~height:300 () in
let vbox = GPack.vbox ~packing:window#add () in
let button =
GButton.button ~label:"Close" ~packing:(vbox#pack ~from:`END) () in
let _ = button#connect#clicked ~callback:window#destroy in
let hbox = GPack.hbox ~packing:vbox#add () in
let sbv = GRange.scrollbar `VERTICAL ~packing:(hbox#pack ~from:`END) () in
let sbh = GRange.scrollbar `HORIZONTAL ~packing:(vbox#pack ~from:`END) () in
window, hbox, sbv, sbh
let show_tuples res =
let window, hbox, sbv, sbh = make_window "Result (tuples)" in
let cl =
GList.clist
~titles:res#get_fnames_lst
~shadow_type:`OUT
~packing:hbox#add
~vadjustment:sbv#adjustment
~hadjustment:sbh#adjustment
() in
for tuple = 0 to res#ntuples - 1 do
ignore (cl#append (res#get_tuple_lst tuple))
done;
cl#columns_autosize ();
window#show ()
let show_copy_out conn =
let window, hbox, sbv, sbh = make_window "Result (copy_out)" in
let txt =
GEdit.text
~packing:hbox#add
~vadjustment:sbv#adjustment
~hadjustment:sbh#adjustment
() in
conn#copy_out (fun s -> txt#insert (s ^ "\n"));
window#show ()
let main () =
let conn = new connection ~conninfo () in
let window = GWindow.window ~title:"Queries" ~width:300 ~height:300 () in
let _ = window#connect#destroy ~callback:Main.quit in
let vbox = GPack.vbox ~border_width:5 ~spacing:10 ~packing:window#add () in
let result = GEdit.text ~editable:false ~packing:vbox#add () in
let text = GEdit.text ~editable:true ~packing:vbox#add ~height:50 () in
let print s = ignore (result#insert_text s ~pos:result#length) in
let rec dump_res () =
match conn#get_result with
| Some res ->
(match res#status with
| Tuples_ok -> show_tuples res
| Copy_out -> show_copy_out conn
| Copy_in ->
let name = file_dialog "Choose file to send" in
if name = "" then (conn # putline "\\.\n"; conn#endcopy)
else (
let ic = open_in name in
conn#copy_in_channel ic;
close_in ic)
| Empty_query -> print "Empty query\n"
| Command_ok -> print (sprintf "Command ok [%s]\n" res#cmd_status)
| Bad_response ->
print (sprintf "Bad response : %s\n" res#error); conn#reset
| Nonfatal_error -> print (sprintf "Non fatal error : %s\n" res#error)
| Fatal_error -> print (sprintf "Fatal error : %s\n" res#error));
dump_res ()
| None -> () in
let query () =
let stop = text#length in
let s = text#get_chars ~start:0 ~stop in
print "-> "; print s; print "\n";
text#delete_text ~start:0 ~stop;
text#set_position 0;
conn#send_query s;
dump_res ();
print "======\n";
flush stdout in
let key_press k =
if GdkEvent.Key.keyval k = GdkKeysyms._KP_Enter then (query (); true)
else false in
let _ = text#event#connect#key_press ~callback:key_press in
let button = GButton.button ~label:"Exec" ~packing:vbox#add ~height:40 () in
let _ = button#connect#clicked ~callback:query in
window#show ();
let window =
GWindow.window ~title:"Backend notifications" ~width:300 ~height:150 () in
let _ = window#connect#destroy ~callback:Main.quit in
let vbox = GPack.vbox ~border_width:5 ~packing:window#add () in
let hbox = GPack.hbox ~packing:vbox#add () in
let sb = GRange.scrollbar `VERTICAL ~packing:(hbox#pack ~from:`END) () in
let clist =
GList.clist
~titles:["Backend PID"; "Notification"]
~shadow_type:`OUT
~packing:hbox#add
~vadjustment:sb#adjustment
() in
let hbox = GPack.hbox ~packing:vbox#pack () in
let button_clear = GButton.button ~label:"Clear" ~packing:hbox#add () in
let _ = button_clear#connect#clicked ~callback:clist#clear in
let button_clear = GButton.button ~label:"Hide" ~packing:hbox#add () in
let _ = button_clear#connect#clicked ~callback:window#misc#hide in
let rec dump_notification () =
match conn#notifies with
| Some (msg, pid) ->
let _ = clist#append [string_of_int pid; msg] in
window#show ();
dump_notification ()
| None -> () in
let _ =
Timeout.add ~ms:100
~callback:(fun () -> conn#consume_input; dump_notification (); true) in
Main.main ()
let _ =
try main () with
| Error e -> prerr_endline (string_of_error e)
| e -> prerr_endline (Printexc.to_string e)
|
