+++ /dev/null
-(* Copyright (C) 2004, HELM Team.
- *
- * This file is part of HELM, an Hypertextual, Electronic
- * Library of Mathematics, developed at the Computer Science
- * Department, University of Bologna, Italy.
- *
- * HELM is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * HELM is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with HELM; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- * MA 02111-1307, USA.
- *
- * For details, see the HELM World-Wide-Web page,
- * http://helm.cs.unibo.it/
- *)
-
-open Printf
-
-open MatitaTypes
-
-type callback = string -> command_outcome
-
-let default_prompt = "# "
-let default_phrase_sep = "."
-let default_callback = fun (phrase: string) -> (true, true)
-let bullet = "∙"
-
-let message_props = [ `STYLE `ITALIC ]
-let error_props = [ `WEIGHT `BOLD ]
-let prompt_props = [ ]
-
-let trailing_NL_RE = Pcre.regexp "\n\\s*$"
-
-class console
- ?(prompt = default_prompt) ?(phrase_sep = default_phrase_sep)
- ?(callback = default_callback) ?evbox ~(paned:GPack.paned) obj
-=
- let console_height = 100 in (* pixels *)
- object (self)
- inherit GText.view obj
-
- val mutable _phrase_sep = phrase_sep
- method phrase_sep = _phrase_sep
- method set_phrase_sep sep = _phrase_sep <- sep
-
- val mutable _prompt = prompt
- method prompt = _prompt
- method set_prompt prompt = _prompt <- prompt
-
- val mutable _callback = callback
- method set_callback f = _callback <- f
-
- val mutable _ignore_insert_text_signal = false
- method ignore_insert_text_signal ignore =
- _ignore_insert_text_signal <- ignore
-
- val history =
- new MatitaMisc.shell_history BuildTimeConf.console_history_size
-
- val mutable handle_position = 450
- val mutable last_phrase = ""
-
- initializer
- let buf = self#buffer in
- self#set_wrap_mode `CHAR;
- self#hide ();
- (* create "USER_INPUT_START" mark. This mark will always point to the
- * beginning of user input not yet processed *)
- ignore (buf#create_mark ~name:"USER_INPUT_START"
- ~left_gravity:true buf#start_iter);
- MatitaGtkMisc.connect_key self#event ~modifiers:[`CONTROL] ~stop:true
- GdkKeysyms._Return
- (fun () ->
- buf#insert ~iter:buf#end_iter "\n";
- let inserted_text =
- MatitaMisc.strip_trailing_blanks
- (buf#get_text
- ~start:(buf#get_iter_at_mark (`NAME "USER_INPUT_START"))
- ~stop:buf#end_iter ())
- in
- self#invoke_callback inserted_text;
- self#echo_prompt ());
-
-(*
- (* callback handling based on phrase terminator (e.g. ";;" at the end of
- * the row: each time a character is inserted *)
- ignore (buf#connect#after#insert_text (fun iter text ->
- if (not _ignore_insert_text_signal) &&
- (iter#compare buf#end_iter = 0) && (* insertion at end *)
- (Pcre.pmatch ~rex:trailing_NL_RE text)
- then
- let inserted_text =
- MatitaMisc.strip_trailing_blanks
- (buf#get_text
- ~start:(buf#get_iter_at_mark (`NAME "USER_INPUT_START"))
- ~stop:buf#end_iter ())
- in
- let pat = (Pcre.quote _phrase_sep) ^ "\\s*$" in
- if Pcre.pmatch ~pat inserted_text then begin (* complete phrase *)
- self#lock;
- last_phrase <- inserted_text;
- self#invoke_callback inserted_text;
- self#echo_prompt ()
- end));
-*)
- (match evbox with (* history key bindings *)
- | None -> ()
- | Some evbox ->
- List.iter (fun (key, f) -> MatitaGtkMisc.add_key_binding key f evbox)
- [ GdkKeysyms._p, (fun () -> self#previous_phrase);
- GdkKeysyms._n, (fun () -> self#next_phrase);
- ]);
- ignore (self#connect#after#move_cursor
- (* avoid cursor being placed at prompt's left *)
- ~callback:(fun step count ~extend ->
- let buf = self#buffer in
- let cursor_iter = buf#get_iter_at_mark `INSERT in
- let prompt_iter = buf#get_iter_at_mark (`NAME "USER_INPUT_START") in
- if prompt_iter#compare cursor_iter = 1 then (* prompt > cursor *)
- buf#place_cursor ~where:prompt_iter))
-
- method private set_phrase phrase =
- let buf = self#buffer in
- buf#delete
- ~start:(buf#get_iter_at_mark (`NAME "USER_INPUT_START"))
- ~stop:buf#end_iter;
- buf#insert ~iter:buf#end_iter phrase
-
- method private invoke_callback phrase =
- history#add phrase;
- let (success, hide) = _callback phrase in
- if hide then self#hide ()
-
- method clear () =
- let buf = self#buffer in
- buf#delete ~start:buf#start_iter ~stop:buf#end_iter
-
- (* lock old text and bump USER_INPUT_START mark *)
- method private lock =
- let buf = self#buffer in
- let read_only = buf#create_tag [`EDITABLE false] in
- buf#apply_tag read_only ~start:buf#start_iter ~stop:buf#end_iter;
- buf#move_mark (`NAME "USER_INPUT_START") buf#end_iter
-
- method echo_prompt () =
- let buf = self#buffer in
- self#ignore_insert_text_signal true;
- buf#insert ~iter:buf#end_iter ~tags:[buf#create_tag prompt_props] prompt;
- self#ignore_insert_text_signal false;
- self#lock
-
- method echo_message msg =
- self#show ();
- let buf = self#buffer in
- self#ignore_insert_text_signal true;
- buf#insert ~iter:buf#end_iter ~tags:[buf#create_tag message_props]
- (msg ^ "\n");
- self#ignore_insert_text_signal false;
- self#lock
-
- method echo_error msg =
- self#show ();
- let buf = self#buffer in
- self#ignore_insert_text_signal true;
- buf#insert ~iter:buf#end_iter ~tags:[buf#create_tag error_props]
- (msg ^ "\n");
- self#ignore_insert_text_signal false;
- self#lock
-
- method private get_paned_prop s =
- Gobject.get { Gobject.name = s; Gobject.conv = Gobject.Data.int }
- paned#as_widget
- method private get_position = self#get_paned_prop "position"
- method private get_min_position = self#get_paned_prop "min-position"
- method private get_max_position = self#get_paned_prop "max-position"
-
- method show ?(msg = "") () =
- self#buffer#insert msg;
- paned#set_position (self#get_max_position - console_height);
- self#misc#grab_focus ()
- method hide () = (* ZACK still not sure about the gui, for the moment just
- * keep the console persistent *)
- ()
-(* paned#set_position self#get_max_position *)
- method toggle () =
- let pos = self#get_position in
- if pos > self#get_max_position - console_height then
- self#show ()
- else
- self#hide ()
-
- (** navigation methods: history, cursor motion, ... *)
-
- method private previous_phrase =
- try self#set_phrase history#previous with MatitaMisc.History_failure -> ()
- method private next_phrase =
- try self#set_phrase history#next with MatitaMisc.History_failure -> ()
-
- method wrap_exn: 'a. (unit -> 'a) -> 'a option =
- fun f ->
- try
- Some (f ())
- with exn ->
- (match exn with (* highlight parse errors in user input *)
- | CicTextualParser2.Parse_error (floc, msg) ->
- let buf = self#buffer in
- let (x, y) = CicAst.loc_of_floc floc in
- let red = buf#create_tag [`FOREGROUND "red"] in
- let (start_error_pos, end_error_pos) =
- buf#end_iter#backward_chars (String.length last_phrase - x),
- buf#end_iter#backward_chars (String.length last_phrase - y)
- in
- if x - y = 0 then (* no region to highlight, let's add an hint
- about where the error occured *)
- buf#insert ~iter:end_error_pos ~tags:[red] bullet
- else (* highlight the region where the error occured *)
- buf#apply_tag red ~start:start_error_pos ~stop:end_error_pos;
- | _ -> ());
- self#echo_error (explain exn);
- None
-
- end
-
-let console
- ?(prompt = default_prompt) ?(phrase_sep = default_phrase_sep)
- ?(callback = default_callback) ?evbox ~paned
- ?buffer ?editable ?cursor_visible ?justification ?wrap_mode ?border_width
- ?width ?height ?packing ?show ()
-=
- let view =
- GText.view
- ?buffer ?editable ?cursor_visible ?justification ?wrap_mode ?border_width
- ?width ?height ?packing ?show ()
- in
- new console ~prompt ~phrase_sep ~callback ?evbox ~paned view#as_view
-
-(* vim: set encoding=utf8: *)
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