368 lines
13 KiB
OCaml
368 lines
13 KiB
OCaml
(***********************************************************************)
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(* *)
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(* MLTk, Tcl/Tk interface of Objective Caml *)
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(* *)
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(* Francois Rouaix, Francois Pessaux, Jun Furuse and Pierre Weis *)
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(* projet Cristal, INRIA Rocquencourt *)
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(* Jacques Garrigue, Kyoto University RIMS *)
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(* *)
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(* Copyright 2002 Institut National de Recherche en Informatique et *)
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(* en Automatique and Kyoto University. All rights reserved. *)
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(* This file is distributed under the terms of the GNU Library *)
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(* General Public License, with the special exception on linking *)
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(* described in file LICENSE found in the Objective Caml source tree. *)
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(* *)
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(***********************************************************************)
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(* $Id$ *)
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(* file selection box *)
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(* This file selecter works only under the OS with the full unix support.
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For the portability, Tk.getOpenFile and Tk.getSaveFile are recommended. *)
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open StdLabels
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open UnixLabels
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open Str
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open Filename
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open Tk
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open Widget
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exception Not_selected
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(********************************************************** Search directory *)
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(* Default is curdir *)
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let global_dir = ref (getcwd ())
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(***************************************************** Some widgets creation *)
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(* from frx_listbox.ml *)
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let scroll_link sb lb =
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Listbox.configure lb ~yscrollcommand: (Scrollbar.set sb);
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Scrollbar.configure sb ~command: (Listbox.yview lb)
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(* focus when enter binding *)
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let bind_enter_focus w =
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bind w ~events:[`Enter] ~action:(fun _ -> Focus.set w);;
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let myentry_create p ~variable =
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let w = Entry.create p ~relief: `Sunken ~textvariable: variable in
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bind_enter_focus w; w
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(************************************************************* Subshell call *)
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let subshell cmd =
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let r,w = pipe () in
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match fork () with
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0 -> close r; dup2 ~src:w ~dst:stdout;
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execv ~prog:"/bin/sh" ~args:[| "/bin/sh"; "-c"; cmd |]
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| id ->
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close w;
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let rc = in_channel_of_descr r in
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let rec it l =
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match
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try Some(input_line rc) with _ -> None
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with
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Some x -> it (x::l)
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| None -> List.rev l
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in
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let answer = it [] in
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close_in rc; (* because of finalize_channel *)
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let _ = waitpid ~mode:[] id in answer
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(***************************************************************** Path name *)
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(* find directory name which doesn't contain "?*[" *)
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let dirget = regexp "^\\([^\\*?[]*/\\)\\(.*\\)"
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let parse_filter src =
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(* replace // by / *)
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let s = global_replace (regexp "/+") "/" src in
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(* replace /./ by / *)
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let s = global_replace (regexp "/\\./") "/" s in
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(* replace ????/../ by "" *)
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let s = global_replace
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(regexp "\\([^/]\\|[^\\./][^/]\\|[^/][^\\./]\\|[^/][^/]+\\)/\\.\\./")
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""
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s in
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(* replace ????/..$ by "" *)
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let s = global_replace
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(regexp "\\([^/]\\|[^\\./][^/]\\|[^/][^\\./]\\|[^/][^/]+\\)/\\.\\.$")
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""
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s in
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(* replace ^/../../ by / *)
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let s = global_replace (regexp "^\\(/\\.\\.\\)+/") "/" s in
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if string_match dirget s 0 then
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let dirs = matched_group 1 s
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and ptrn = matched_group 2 s
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in
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dirs, ptrn
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else "", s
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let ls dir pattern =
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subshell ("cd " ^ dir ^ ";/bin/ls -ad " ^ pattern ^" 2>/dev/null")
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(*************************************************************** File System *)
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let get_files_in_directory dir =
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let dirh = opendir dir in
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let rec get_them l =
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match
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try Some(Unix.readdir dirh) with _ -> None
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with
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| None ->
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Unix.closedir dirh; l
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| Some x ->
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get_them (x::l)
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in
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List.sort ~cmp:compare (get_them [])
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let rec get_directories_in_files path =
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List.filter
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~f:(fun x -> try (stat (path ^ x)).st_kind = S_DIR with _ -> false)
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let remove_directories path =
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List.filter
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~f:(fun x -> try (stat (path ^ x)).st_kind <> S_DIR with _ -> false)
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(************************* a nice interface to listbox - from frx_listbox.ml *)
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let add_completion lb action =
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let prefx = ref "" (* current match prefix *)
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and maxi = ref 0 (* maximum index (doesn'y matter actually) *)
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and current = ref 0 (* current position *)
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and lastevent = ref 0 in
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let rec move_forward () =
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if Listbox.get lb ~index:(`Num !current) < !prefx then
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if !current < !maxi then begin incr current; move_forward() end
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and recenter () =
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let element = `Num !current in
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(* Clean the selection *)
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Listbox.selection_clear lb ~first:(`Num 0) ~last:`End;
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(* Set it to our unique element *)
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Listbox.selection_set lb ~first:element ~last:element;
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(* Activate it, to keep consistent with Up/Down.
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You have to be in Extended or Browse mode *)
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Listbox.activate lb ~index:element;
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Listbox.selection_anchor lb ~index:element;
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Listbox.see lb ~index:element in
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let complete time s =
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if time - !lastevent < 500 then (* sorry, hard coded limit *)
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prefx := !prefx ^ s
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else begin (* reset *)
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current := 0;
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prefx := s
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end;
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lastevent := time;
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move_forward();
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recenter() in
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bind lb ~events:[`KeyPress] ~fields:[`Char; `Time]
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(* consider only keys producing characters. The callback is called
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if you press Shift. *)
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~action:(fun ev -> if ev.ev_Char <> "" then complete ev.ev_Time ev.ev_Char);
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(* Key specific bindings override KeyPress *)
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bind lb ~events:[`KeyPressDetail "Return"] ~action;
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(* Finally, we have to set focus, otherwise events dont get through *)
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Focus.set lb;
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recenter() (* so that first item is selected *);
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(* returns init_completion function *)
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(fun lb ->
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prefx := "";
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maxi := Listbox.size lb - 1;
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current := 0)
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(****************************************************************** Creation *)
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let f ~title ~action:proc ~filter:deffilter ~file:deffile ~multi ~sync =
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(* Ah ! Now I regret about the names of the widgets... *)
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let current_pattern = ref ""
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and current_dir = ref "" in
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(* init_completions *)
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let filter_init_completion = ref (fun _ -> ())
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and directory_init_completion = ref (fun _ -> ()) in
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let tl = Toplevel.create default_toplevel in
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Focus.set tl;
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Wm.title_set tl title;
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let filter_var = Textvariable.create ~on:tl () (* new_temporary *)
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and selection_var = Textvariable.create ~on:tl ()
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and sync_var = Textvariable.create ~on:tl () in
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let frm' = Frame.create tl ~borderwidth: 1 ~relief: `Raised in
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let frm = Frame.create frm' ~borderwidth: 8 in
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let fl = Label.create frm ~text: "Filter" in
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let df = Frame.create frm in
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let dfl = Frame.create df in
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let dfll = Label.create dfl ~text: "Directories" in
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let dflf = Frame.create dfl in
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let directory_listbox = Listbox.create dflf ~relief: `Sunken
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and directory_scrollbar = Scrollbar.create dflf in
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scroll_link directory_scrollbar directory_listbox;
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let dfr = Frame.create df in
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let dfrl = Label.create dfr ~text: "Files" in
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let dfrf = Frame.create dfr in
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let filter_listbox = Listbox.create dfrf ~relief: `Sunken in
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let filter_scrollbar = Scrollbar.create dfrf in
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scroll_link filter_scrollbar filter_listbox;
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let sl = Label.create frm ~text: "Selection" in
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let filter_entry = myentry_create frm ~variable: filter_var in
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let selection_entry = myentry_create frm ~variable: selection_var
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in
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let cfrm' = Frame.create tl ~borderwidth: 1 ~relief: `Raised in
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let cfrm = Frame.create cfrm' ~borderwidth: 8 in
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let dumf = Frame.create cfrm in
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let dumf2 = Frame.create cfrm in
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let configure filter =
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(* OLDER let curdir = getcwd () in *)
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(* Printf.eprintf "CURDIR %s\n" curdir; *)
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let filter =
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if string_match (regexp "^/.*") filter 0 then filter
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else
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if filter = "" then !global_dir ^ "/*"
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else !global_dir ^ "/" ^ filter in
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(* Printf.eprintf "FILTER %s\n" filter; *)
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let dirname, patternname = parse_filter filter in
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(* Printf.eprintf "DIRNAME %s PATTERNNAME %s\n" dirname patternname; *)
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current_dir := dirname;
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global_dir := dirname;
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let patternname = if patternname = "" then "*" else patternname in
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current_pattern := patternname;
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let filter = dirname ^ patternname in
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(* Printf.eprintf "FILTER : %s\n\n" filter; *)
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(* flush Pervasives.stderr; *)
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try
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let directories = get_directories_in_files dirname
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(get_files_in_directory dirname) in
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(* get matched file by subshell call. *)
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let matched_files = remove_directories dirname (ls dirname patternname)
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in
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Textvariable.set filter_var filter;
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Textvariable.set selection_var (dirname ^ deffile);
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Listbox.delete directory_listbox ~first:(`Num 0) ~last:`End;
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Listbox.insert directory_listbox ~index:`End ~texts:directories;
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Listbox.delete filter_listbox ~first:(`Num 0) ~last:`End;
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Listbox.insert filter_listbox ~index:`End ~texts:matched_files;
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!directory_init_completion directory_listbox;
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!filter_init_completion filter_listbox
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with
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Unix_error (ENOENT,_,_) ->
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(* Directory is not found (maybe) *)
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Bell.ring ()
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in
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let selected_files = ref [] in (* used for synchronous mode *)
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let activate l () =
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Grab.release tl;
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destroy tl;
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if sync then
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begin
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selected_files := l;
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Textvariable.set sync_var "1"
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end
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else
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begin
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proc l;
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break ()
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end
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in
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(* and buttons *)
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let okb = Button.create cfrm ~text: "OK" ~command:
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begin fun () ->
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let files =
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List.map (Listbox.curselection filter_listbox)
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~f:(fun x -> !current_dir ^ (Listbox.get filter_listbox ~index:x))
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in
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let files = if files = [] then [Textvariable.get selection_var]
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else files in
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activate files ()
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end
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in
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let flb = Button.create cfrm ~text: "Filter"
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~command: (fun () -> configure (Textvariable.get filter_var)) in
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let ccb = Button.create cfrm ~text: "Cancel"
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~command: (fun () -> activate [] ()) in
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(* binding *)
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bind selection_entry ~events:[`KeyPressDetail "Return"] ~breakable:true
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~action:(fun _ -> activate [Textvariable.get selection_var] ());
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bind filter_entry ~events:[`KeyPressDetail "Return"]
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~action:(fun _ -> configure (Textvariable.get filter_var));
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let action _ =
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let files =
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List.map (Listbox.curselection filter_listbox)
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~f:(fun x -> !current_dir ^ (Listbox.get filter_listbox ~index:x))
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in
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activate files ()
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in
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bind filter_listbox ~events:[`Modified([`Double], `ButtonPressDetail 1)]
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~breakable:true ~action;
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if multi then Listbox.configure filter_listbox ~selectmode: `Multiple;
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filter_init_completion := add_completion filter_listbox action;
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let action _ =
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try
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configure (!current_dir ^ ((function
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[x] -> Listbox.get directory_listbox ~index:x
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| _ -> (* you must choose at least one directory. *)
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Bell.ring (); raise Not_selected)
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(Listbox.curselection directory_listbox)) ^ "/" ^ !current_pattern)
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with _ -> () in
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bind directory_listbox ~events:[`Modified([`Double], `ButtonPressDetail 1)]
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~breakable:true ~action;
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Listbox.configure directory_listbox ~selectmode: `Browse;
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directory_init_completion := add_completion directory_listbox action;
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pack [frm'; frm] ~fill: `X;
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(* filter *)
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pack [fl] ~side: `Top ~anchor: `W;
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pack [filter_entry] ~side: `Top ~fill: `X;
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(* directory + files *)
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pack [df] ~side: `Top ~fill: `X ~ipadx: 8;
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(* directory *)
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pack [dfl] ~side: `Left;
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pack [dfll] ~side: `Top ~anchor: `W;
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pack [dflf] ~side: `Top;
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pack [coe directory_listbox; coe directory_scrollbar]
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~side: `Left ~fill: `Y;
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(* files *)
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pack [dfr] ~side: `Right;
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pack [dfrl] ~side: `Top ~anchor: `W;
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pack [dfrf] ~side: `Top;
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pack [coe filter_listbox; coe filter_scrollbar] ~side: `Left ~fill: `Y;
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(* selection *)
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pack [sl] ~side: `Top ~anchor: `W;
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pack [selection_entry] ~side: `Top ~fill: `X;
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(* create OK, Filter and Cancel buttons *)
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pack [cfrm'] ~fill: `X;
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pack [cfrm] ~fill: `X;
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pack [okb] ~side: `Left;
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pack [dumf] ~side: `Left ~expand: true;
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pack [flb] ~side: `Left;
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pack [dumf2] ~side: `Left ~expand: true;
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pack [ccb] ~side: `Left;
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configure deffilter;
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Tkwait.visibility tl;
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Grab.set tl;
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if sync then
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begin
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Tkwait.variable sync_var;
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proc !selected_files
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end;
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()
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