1 (* Copyright (C) 2004, HELM Team.
3 * This file is part of HELM, an Hypertextual, Electronic
4 * Library of Mathematics, developed at the Computer Science
5 * Department, University of Bologna, Italy.
7 * HELM is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
12 * HELM is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with HELM; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
22 * For details, see the HELM World-Wide-Web page,
23 * http://helm.cs.unibo.it/
30 (* let default_prompt = "# " *)
31 let default_prompt = ""
32 let default_phrase_sep = "."
33 let default_callback = fun (phrase: string) -> true
35 let message_props = [ `STYLE `ITALIC ]
36 let error_props = [ `WEIGHT `BOLD ]
37 let prompt_props = [ ]
39 let trailing_NL_RE = Pcre.regexp "\n\\s*$"
41 exception History_failure
43 (** shell like phrase history *)
45 let size = size + 1 in
46 let decr x = let x' = x - 1 in if x' < 0 then size + x' else x' in
47 let incr x = (x + 1) mod size in
49 val data = Array.create size ""
50 val mutable hd = 0 (* insertion point *)
51 val mutable tl = -1 (* oldest inserted item *)
52 val mutable cur = -1 (* current item for the history *)
55 if tl = -1 then tl <- hd;
57 if hd = tl then tl <- incr tl;
60 if cur = tl then raise History_failure;
64 if cur = hd then raise History_failure;
66 if cur = hd then "" else data.(cur)
70 ?(prompt = default_prompt) ?(phrase_sep = default_phrase_sep)
71 ?(callback = default_callback) ?evbox ~(paned:GPack.paned) obj
73 let console_height = 100 in (* pixels *)
75 inherit GText.view obj
77 val mutable _phrase_sep = phrase_sep
78 method phrase_sep = _phrase_sep
79 method set_phrase_sep sep = _phrase_sep <- sep
81 val mutable _prompt = prompt
82 method prompt = _prompt
83 method set_prompt prompt = _prompt <- prompt
85 val mutable _callback = callback
86 method set_callback f = _callback <- f
88 val mutable _ignore_insert_text_signal = false
89 method ignore_insert_text_signal ignore =
90 _ignore_insert_text_signal <- ignore
92 val history = new history BuildTimeConf.console_history_size
94 val mutable handle_position = 450
97 let buf = self#buffer in
98 self#set_wrap_mode `CHAR;
100 (* create "USER_INPUT_START" mark. This mark will always point to the
101 * beginning of user input not yet processed *)
102 ignore (buf#create_mark ~name:"USER_INPUT_START"
103 ~left_gravity:true buf#start_iter);
104 ignore (buf#connect#after#insert_text (fun iter text ->
105 if (not _ignore_insert_text_signal) &&
106 (iter#compare buf#end_iter = 0) && (* insertion at end *)
107 (Pcre.pmatch ~rex:trailing_NL_RE text)
111 ~start:(buf#get_iter_at_mark (`NAME "USER_INPUT_START"))
112 ~stop:buf#end_iter ()
114 let pat = (Pcre.quote _phrase_sep) ^ "\\s*$" in
115 if Pcre.pmatch ~pat inserted_text then begin (* complete phrase *)
117 self#invoke_callback inserted_text;
120 (match evbox with (* history key bindings *)
123 List.iter (fun (key, f) -> MatitaGtkMisc.add_key_binding key f evbox)
124 [ GdkKeysyms._p, (fun () -> self#previous_phrase);
125 GdkKeysyms._n, (fun () -> self#next_phrase);
127 ignore (self#connect#after#move_cursor
128 (* avoid cursor being placed at prompt's left *)
129 ~callback:(fun step count ~extend ->
130 let buf = self#buffer in
131 let cursor_iter = buf#get_iter_at_mark `INSERT in
132 let prompt_iter = buf#get_iter_at_mark (`NAME "USER_INPUT_START") in
133 if prompt_iter#compare cursor_iter = 1 then (* prompt > cursor *)
134 buf#place_cursor ~where:prompt_iter))
136 method private set_phrase phrase =
137 let buf = self#buffer in
139 ~start:(buf#get_iter_at_mark (`NAME "USER_INPUT_START"))
141 buf#insert ~iter:buf#end_iter phrase
143 method private invoke_callback phrase =
144 history#add (* do not push trailing phrase separator *)
146 (String.length phrase - String.length _phrase_sep));
147 if _callback phrase then begin
150 (* else callback encountered troubles, don't hide console which
151 probably contains error message *)
155 let buf = self#buffer in
156 buf#delete ~start:buf#start_iter ~stop:buf#end_iter
158 (* lock old text and bump USER_INPUT_START mark *)
159 method private lock =
160 let buf = self#buffer in
161 let read_only = buf#create_tag [`EDITABLE false] in
162 buf#apply_tag read_only ~start:buf#start_iter ~stop:buf#end_iter;
163 buf#move_mark (`NAME "USER_INPUT_START") buf#end_iter
165 method echo_prompt () =
166 let buf = self#buffer in
167 self#ignore_insert_text_signal true;
168 buf#insert ~iter:buf#end_iter ~tags:[buf#create_tag prompt_props] prompt;
169 self#ignore_insert_text_signal false;
172 method echo_message msg =
173 let buf = self#buffer in
174 self#ignore_insert_text_signal true;
175 buf#insert ~iter:buf#end_iter ~tags:[buf#create_tag message_props]
177 self#ignore_insert_text_signal false;
180 method echo_error msg =
182 let buf = self#buffer in
183 self#ignore_insert_text_signal true;
184 buf#insert ~iter:buf#end_iter ~tags:[buf#create_tag error_props]
186 self#ignore_insert_text_signal false;
189 method private get_paned_prop s =
190 Gobject.get { Gobject.name = s; Gobject.conv = Gobject.Data.int }
192 method private get_position = self#get_paned_prop "position"
193 method private get_min_position = self#get_paned_prop "min-position"
194 method private get_max_position = self#get_paned_prop "max-position"
196 method show ?(msg = "") () =
197 self#buffer#insert msg;
198 paned#set_position (self#get_max_position - console_height);
199 self#misc#grab_focus ()
201 paned#set_position self#get_max_position
203 let pos = self#get_position in
204 if pos > self#get_max_position - console_height then
209 (** navigation methods: history, cursor motion, ... *)
211 method private previous_phrase =
212 try self#set_phrase history#previous with History_failure -> ()
213 method private next_phrase =
214 try self#set_phrase history#next with History_failure -> ()
216 method wrap_exn (f: unit -> unit) =
221 | StatefulProofEngine.Tactic_failure exn ->
222 self#echo_error (sprintf "Tactic failed: %s"(Printexc.to_string exn));
225 self#echo_error (sprintf "Uncaught exception: %s"
226 (Printexc.to_string exn));
232 ?(prompt = default_prompt) ?(phrase_sep = default_phrase_sep)
233 ?(callback = default_callback) ?evbox ~paned
234 ?buffer ?editable ?cursor_visible ?justification ?wrap_mode ?border_width
235 ?width ?height ?packing ?show ()
239 ?buffer ?editable ?cursor_visible ?justification ?wrap_mode ?border_width
240 ?width ?height ?packing ?show ()
242 new console ~prompt ~phrase_sep ~callback ?evbox ~paned view#as_view