/* Part of XPCE --- The SWI-Prolog GUI toolkit Author: Jan Wielemaker and Anjo Anjewierden E-mail: jan@swi.psy.uva.nl WWW: http://www.swi.psy.uva.nl/projects/xpce/ Copyright (c) 2002-2011, University of Amsterdam All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ :- module(emacs_find, []). :- use_module(library(pce)). :- use_module(library(pce_tick_box)). :- use_module(library(hyper)). :- use_module(library(pce_report)). /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - This module defines a dialog window to execute search in editors. This module is defined for use with PceEmacs to realise `novice user' find, but contains no PceEmacs specific code and can therefore be used with any instance of class editor. To initiate a find, simply do send(editor_find_dialog(Editor), open) See also the commented test/0 predicate at the end of this file and fundamental_mode.pl TBD: remember location or do smarter placement? - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */ :- pce_global(@editor_find_history, new(chain)). :- pce_begin_class(editor_find_dialog, dialog, "Find in XPCE editor"). variable(search_origin, int*, get, "Start of the search"). variable(search_point, int*, get, "Current search location"). initialise(D, E:editor) :-> "Create for editor":: send_super(D, initialise, 'Find in text'), send(D, append, new(TI, text_item(find))), send(TI, value_set, @editor_find_history), send(D, append, new(M, menu(options, marked, @nil))), send(M, multiple_selection, @on), send(M, show_label, @off), send(M, auto_value_align, @off), send_list(M, append, [ regex, whole_word, match_case, wrapped ]), get(E, exact_case, MatchCase), send(M, selected, match_case, MatchCase), send(D, append, button(forwards)), send(D, append, button(backwards)), send(D, append, button(done)), send(D, append, button(cancel)), send(D, default_button, forwards), new(_, partof_hyper(E, D, search, editor)), send(new(report_dialog), below, D). :- pce_global(@editor_find_dialog_recogniser, make_recogniser). make_recogniser(G) :- new(G, key_binding(editor_find_dialog)), send(G, function, '\\C-g', cancel), send(G, function, 'ESC', done). event(D, Ev:event) :-> "Handle special keys":: ( send(@editor_find_dialog_recogniser, event, Ev) -> true ; send_super(D, event, Ev) ). editor(D, E:editor) :<- "Get associated editor":: get(D, hypered, editor, E). open(D) :-> "Open for attached editor":: get(D, editor, E), get(E, frame, Frame), send(D, transient_for, Frame), send(D, modal, transient), get(E, display_position, point(DX, DY)), get(E?area, size, size(EW, EH)), CX is DX+EW//2, CY is DY+EH//2, send(D, open_centered, point(CX, CY)). cancel(D) :-> "Cancel search dialog":: ( get(D, search_origin, Origin), Origin \== @nil -> get(D, editor, E), send(E, caret, Origin) ; true ), send(D, destroy). done(D) :-> "Accept search":: send(D, destroy). append_history(_, Find:name) :-> "Add search to history":: send(@editor_find_history, delete_all, Find), send(@editor_find_history, prepend, Find). regex(D, Re:regex) :<- "Compile target regular expression from options":: get(D, member, find, TI), get(D, member, options, M), get(TI, selection, For), send(D, append_history, For), get(M, selected, match_case, MatchCase), ( get(M, selected, regex, @on) -> Pattern = For ; get(new(regex), quote, For, Pattern) ), ( get(M, selected, whole_word, @on) -> ( send(Pattern, prefix, '\\b') -> true ; send(Pattern, prepend, '\\b') ), send(Pattern, ensure_suffix, '\\b') ; true ), new(Re, regex(Pattern, MatchCase)). use_wrapped(D, Wrapped:bool) :<- "Use wrapped search?":: get(D, member, options, M), get(M, selected, wrapped, Wrapped). wrapped(D, Dir:{forwards,backwards}, Wrapped:bool) :<- "Are we wrapped?":: get(D, search_point, Point), get(D, search_origin, Origin), ( Dir == forwards -> ( Point >= Origin -> Wrapped = @off ; Wrapped = @on ) ; ( Point =< Origin -> Wrapped = @off ; Wrapped = @on ) ). point(D, Dir:{forwards,backwards}, Here:int) :<- ( get(D, search_point, Point), Point \== @nil -> ( get(D, hypered, fragment, Frag) -> ( Dir == forwards -> get(Frag, end, Here) ; get(Frag, start, Here) ) ; Here = Point ) ; get(D, editor, Editor), get(Editor, caret, Here), send(D, slot, search_origin, Here), send(D, slot, search_point, Here) ). prepare_style(D) :-> "Register style for found":: get(D, editor, E), ( get(E, style, found, _) -> true ; send(E, style, found, style(background := green)) ). found(D, Start:int, End:int, Dir:{forwards,backwards}) :-> "Indicate a search-hit":: send(D, prepare_style), ( Dir == forwards -> Point = End ; Point = Start ), get(D, editor, E), send(D, slot, search_point, Point), send(E, caret, Point), Len is End-Start, ( get(D, hypered, fragment, Fragment) -> send(Fragment, start, Start), send(Fragment, length, Len) ; new(Fragment, fragment(E, Start, Len, found)), new(_, partof_hyper(D, Fragment, fragment, find_dialog)) ), ( get(D, wrapped, Dir, @on) -> send(D, report, status, 'Wrapped') ; send(D, report, status, '') ). forwards(D) :-> "Execute search forwards":: get(D, regex, Regex), get(D, editor, Editor), get(D, point, forwards, Here), ( ( get(Regex, search, Editor, Here, Start) -> true ; get(D, use_wrapped, @on), get(Regex, search, Editor, 0, Start), Start < Here ) -> get(Regex, register_end, End), send(D, found, Start, End, forwards) ; send(D, report, warning, 'No match') ). backwards(D) :-> "Execute search backwards":: get(D, regex, Regex), get(D, editor, Editor), get(D, point, backwards, Here), ( ( get(Regex, search, Editor, Here, 0, Start) -> true ; get(D, use_wrapped, @on), get(Editor?text_buffer, size, Size), get(Regex, search, Editor, Size, 0, Start), Start > Here ) -> get(Regex, register_end, End), send(D, found, Start, End, backwards) ; send(D, report, warning, 'No match') ). :- pce_end_class(editor_find_dialog). /* test :- send(new(V, view), open), send(V, style, found, style(background := green)), send(V, load, 'find.pl'), send(V, key_binding, '\\C-f', message(@prolog, find_in, V)). find_in(V) :- send(editor_find_dialog(V), open). */