+++ /dev/null
-(* Copyright (C) 2000-2002, 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://cs.unibo.it/helm/.
- *)
-
-(******************************************************************************)
-(* *)
-(* PROJECT HELM *)
-(* *)
-(* Claudio Sacerdoti Coen <sacerdot@cs.unibo.it> *)
-(* 06/01/2002 *)
-(* *)
-(* *)
-(******************************************************************************)
-
-(* A WIDGET TO ENTER CIC TERMS *)
-
-class type term_editor =
- object
- method coerce : GObj.widget
- (* get_as_string returns the unquoted string *)
- method get_as_string : string
- method get_metasenv_and_term :
- context:Cic.context ->
- metasenv:Cic.metasenv -> Cic.metasenv * Cic.term
- method reset : unit
- (* The input of set_term is unquoted *)
- method set_term : string -> unit
- method id_to_uris : Disambiguate.domain_and_interpretation ref
- end
-;;
-
-let empty_id_to_uris = ([],function _ -> None);;
-
-module Make(C:Disambiguate.Callbacks) =
- struct
-
- module Disambiguate' = Disambiguate.Make(C);;
-
- class term_editor_impl
- mqi_handle
- ?packing ?width ?height
- ?isnotempty_callback ?share_id_to_uris_with () : term_editor
- =
- let mmlwidget =
- GMathViewAux.single_selection_math_view
- ?packing ?width ?height () in
- let drawing_area = mmlwidget#get_drawing_area in
- let _ = drawing_area#misc#set_can_focus true in
- let _ = drawing_area#misc#grab_focus () in
- let logger =
- fun l s -> prerr_endline ("TERM_EDITOR (" ^ string_of_int l ^ "): " ^ s) in
- let tex_editor =
- Mathml_editor.create
- ~alt_lexer:true
- ~dictionary_uri:"dictionary-cic.xml"
- ~mml_uri:Mathml_editor.default_mathml_stylesheet_path
-(*CSC: togliere il path assoluto
- ~tml_uri:Mathml_editor.default_tex_stylesheet_path
-*)
- ~tml_uri:"/usr/share/editex/tml-litex.xsl"
- ~log:logger
- in
- let _ =
- (new GObj.event_ops mmlwidget#coerce#as_widget)#connect#button_press
- ~callback:(fun _ -> drawing_area#misc#grab_focus () ; true) in
- let _ =
- (new GObj.event_ops drawing_area#coerce#as_widget)#connect#focus_in
- ~callback:
- (fun _ ->
- mmlwidget#freeze ;
- Mathml_editor.cursor_show ~editor:tex_editor ;
- mmlwidget#thaw ;
- true) in
- let _ =
- (new GObj.event_ops drawing_area#coerce#as_widget)#connect#focus_out
- ~callback:
- (fun _ ->
- mmlwidget#freeze ;
- Mathml_editor.cursor_hide ~editor:tex_editor ;
- mmlwidget#thaw ;
- true) in
- let _ = Mathml_editor.push tex_editor '$' in
- let dom_tree = Mathml_editor.get_mml tex_editor in
- let _ = mmlwidget#load_doc dom_tree in
- let _ =
- drawing_area#event#connect#key_press
- (function e ->
- let key = GdkEvent.Key.keyval e in
- mmlwidget#freeze ;
- if
- key >= 32 && key < 256 &&
- (GdkEvent.Key.state e = [] || GdkEvent.Key.state e = [`SHIFT])
- then
- Mathml_editor.push tex_editor (Char.chr key)
- else if key = GdkKeysyms._u then
- begin
- mmlwidget#freeze ;
- ignore (Mathml_editor.freeze tex_editor) ;
- Mathml_editor.reset tex_editor ;
- Mathml_editor.push tex_editor '$' ;
- ignore (Mathml_editor.thaw tex_editor) ;
- mmlwidget#thaw
- end
- else if key = GdkKeysyms._BackSpace then
- Mathml_editor.drop tex_editor
- (List.mem `CONTROL (GdkEvent.Key.state e)) ;
- let adj = mmlwidget#get_hadjustment in
- mmlwidget#thaw ;
- adj#set_value adj#upper ;
- false) in
- let id_to_uris =
- match share_id_to_uris_with with
- None -> ref empty_id_to_uris
- | Some obj -> obj#id_to_uris
- in
- let _ =
- match isnotempty_callback with
- None -> ()
- | Some callback ->
- (* This approximation of the test that checks if the tree is empty *)
- (* is utterly unprecise. We assume a tree to look as an empty tree *)
- (* iff it is made of just one node m:mtext (which should be the *)
- (* cursor). *)
- let is_empty_tree () =
- let root = dom_tree#get_documentElement in
- match root#get_firstChild with
- None -> true
- | Some n -> n#get_nodeName#to_string = "m:mtext"
- in
- dom_tree#addEventListener
- ~typ:(Gdome.domString "DOMSubtreeModified")
- ~listener:
- (Gdome.eventListener
- (function _ -> callback (not (is_empty_tree ()))))
- ~useCapture:false
- in
- object(self)
- method coerce = mmlwidget#coerce
- method reset =
- mmlwidget#freeze ;
- ignore (Mathml_editor.freeze tex_editor) ;
- Mathml_editor.reset tex_editor ;
- Mathml_editor.push tex_editor '$' ;
- ignore (Mathml_editor.thaw tex_editor) ;
- mmlwidget#thaw
-
- (* The input of set_term is unquoted *)
- method set_term txt =
- mmlwidget#freeze ;
- ignore (Mathml_editor.freeze tex_editor) ;
- self#reset ;
- let txt' = Str.global_replace (Str.regexp "_") "\\_" txt in
- String.iter (fun ch -> Mathml_editor.push tex_editor ch) txt' ;
- ignore (Mathml_editor.thaw tex_editor) ;
- mmlwidget#thaw
-
- (* get_as_string returns the unquoted string *)
- method get_as_string =
- let term = Mathml_editor.get_tex tex_editor in
- Str.global_replace (Str.regexp "^\\$\\$?") ""
- (Str.global_replace (Str.regexp "\\$\\$?$") ""
- (Str.global_replace (Str.regexp "\\\\_") "_" term))
-
- method get_metasenv_and_term ~context ~metasenv =
- let name_context =
- List.map
- (function
- Some (n,_) -> Some n
- | None -> None
- ) context
- in
-prerr_endline ("###CSC: " ^ (Mathml_editor.get_tex tex_editor)) ;
- let lexbuf = Lexing.from_string (Mathml_editor.get_tex tex_editor) in
- let dom,mk_metasenv_and_expr =
- TexCicTextualParserContext.main
- ~context:name_context ~metasenv TexCicTextualLexer.token lexbuf
- in
- let id_to_uris',metasenv,expr =
- Disambiguate'.disambiguate_input mqi_handle
- context metasenv dom mk_metasenv_and_expr ~id_to_uris:!id_to_uris
- in
- id_to_uris := id_to_uris' ;
- metasenv,expr
- method id_to_uris = id_to_uris
- end
-
- let term_editor = new term_editor_impl
-
-end
-;;
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