1 ! Copyright (C) 2006, 2011 Slava Pestov
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: accessors arrays assocs calendar colors combinators
4 combinators.short-circuit documents documents.elements fonts fry
5 grouping kernel literals locals make math math.functions
6 math.order ranges math.rectangles math.vectors models
7 models.arrow namespaces opengl opengl.gl sequences sorting
8 splitting system timers ui.baseline-alignment ui.clipboards
9 ui.commands ui.gadgets ui.gadgets.borders
10 ui.gadgets.line-support ui.gadgets.menus ui.gadgets.scrollers
11 prettyprint ui.gadgets.editors.private math.parser
12 ui.gestures ui.pens.solid ui.render ui.text ui.theme unicode variables ;
13 IN: ui.gadgets.editors
15 TUPLE: editor < line-gadget
17 focused? blink blink-timer
21 preedit-selected-start
23 preedit-selection-mode?
26 M: editor preedit? preedit-start>> ;
28 SYMBOL: caret-is-shape
29 : <caret-shape> ( -- shape ) caret-is-shape get <model> ;
33 : <loc> ( -- loc ) { 0 0 } <model> ;
35 : init-editor-locs ( editor -- editor )
37 <caret-shape> >>caret-shape
40 : editor-theme ( editor -- editor )
41 monospace-font >>font ; inline
45 : new-editor ( class -- editor )
51 : <editor> ( -- editor )
56 : activate-editor-model ( editor model -- )
58 [ nip activate-model ]
59 [ swap model>> add-loc ] 2tri ;
61 : deactivate-editor-model ( editor model -- )
63 [ nip deactivate-model ]
64 [ swap model>> remove-loc ] 2tri ;
66 : blink-caret ( editor -- )
67 [ not ] change-blink relayout-1 ;
69 SYMBOL: blink-interval
71 750 milliseconds blink-interval set-global
73 : stop-blinking ( editor -- )
74 blink-timer>> [ stop-timer ] when* ;
76 : start-blinking ( editor -- )
78 blink-timer>> [ restart-timer ] when* ;
80 : restart-blinking ( editor -- )
90 [ dup caret>> activate-editor-model ]
91 [ dup mark>> activate-editor-model ]
94 '[ _ blink-caret ] blink-interval get dup <timer>
99 [ [ stop-blinking ] [ f >>blink-timer drop ] bi ]
100 [ dup caret>> deactivate-editor-model ]
101 [ dup mark>> deactivate-editor-model ] tri ;
103 : editor-caret ( editor -- loc ) caret>> value>> ;
105 : editor-mark ( editor -- loc ) mark>> value>> ;
107 : set-caret ( loc editor -- )
108 [ model>> validate-loc ] [ caret>> ] bi set-model ;
110 : set-mark ( loc editor -- )
111 [ model>> validate-loc ] [ mark>> ] bi set-model ;
113 : change-caret ( editor quot: ( loc document -- newloc ) -- )
114 [ [ [ editor-caret ] [ model>> ] bi ] dip call ] [ drop ] 2bi
117 : mark>caret ( editor -- )
118 [ editor-caret ] [ mark>> ] bi set-model ;
120 : change-caret&mark ( editor quot: ( loc document -- newloc ) -- )
121 [ change-caret ] [ drop mark>caret ] 2bi ; inline
123 : editor-line ( n editor -- str ) control-value nth ;
125 :: point>loc ( point editor -- loc )
126 point second editor y>line {
127 { [ dup 0 < ] [ drop { 0 0 } ] }
128 { [ dup editor model>> last-line# > ] [ drop editor model>> doc-end ] }
138 : clicked-loc ( editor -- loc )
139 [ hand-rel ] keep point>loc ;
141 : click-loc ( editor model -- )
142 [ clicked-loc ] dip set-model ;
144 : focus-editor ( editor -- )
145 [ start-blinking ] [ t >>focused? relayout-1 ] bi ;
147 : unfocus-editor ( editor -- )
148 [ stop-blinking ] [ f >>focused? relayout-1 ] bi ;
150 : loc>x ( loc editor -- x )
151 [ first2 swap ] dip [ editor-line ] [ font>> ] bi swap offset>x gl-round ;
153 : loc>point ( loc editor -- loc )
154 [ loc>x ] [ [ first ] dip line>y gl-ceiling ] 2bi 2array ;
156 : caret-loc ( editor -- loc )
157 [ editor-caret ] keep loc>point ;
159 : caret-dim ( editor -- dim )
160 [ 0 ] dip line-height 2array ;
162 : scroll>caret ( editor -- )
163 dup graft-state>> second [
165 [ caret-loc ] [ caret-dim { 2 1 } v+ ] bi <rect>
171 : draw-caret? ( editor -- ? )
172 { [ focused?>> ] [ blink>> ]
173 [ [ preedit? not ] [ preedit-selection-mode?>> not ] bi or ] } 1&& ;
175 : (caret-location) ( editor -- loc dim )
176 [ caret-loc ] [ caret-dim ] bi ;
178 : (caret-rect) ( dim -- newdim )
179 second [ 2 / ] keep 2array ;
181 : draw-caret-line ( editor -- )
182 (caret-location) over v+ gl-line ;
184 : draw-caret-rect ( editor -- )
185 (caret-location) (caret-rect) gl-rect ;
187 : draw-caret-rect-filled ( editor -- )
188 (caret-location) (caret-rect) gl-fill-rect ;
190 : draw-caret-shape ( editor -- )
191 dup caret-shape>> value>>
193 { 1 [ draw-caret-rect ] }
194 { 2 [ draw-caret-rect-filled ] }
195 [ drop draw-caret-line ]
199 : draw-caret ( editor -- )
201 [ editor-caret-color gl-color ] dip
202 [ caret-loc ] [ caret-dim ] bi
206 :: draw-preedit-underlines ( editor -- )
207 editor [ preedit? ] [ preedit-underlines>> ] bi and [
208 editor [ caret-loc second ] [ caret-dim second ] bi + 2.0 - :> y
209 editor editor-caret first :> row
210 editor font>> foreground>> gl-color
211 editor preedit-underlines>> [
213 dup second glLineWidth
214 first editor preedit-start>> second dup 2array v+ first2
215 [ row swap 2array editor loc>x 1.0 + y 2array ]
216 [ row swap 2array editor loc>x 1.0 - y 2array ]
223 : selection-start/end ( editor -- start end )
224 [ editor-mark ] [ editor-caret ] bi sort-pair ;
226 SYMBOL: selected-lines
228 TUPLE: selected-line start end first? last? ;
230 : compute-selection ( editor -- assoc )
231 dup gadget-selection? [
232 [ selection-start/end [ [ first ] bi@ [a..b] ] [ ] 2bi ]
234 '[ [ _ _ ] [ _ start/end-on-line ] bi 2array ] H{ } map>assoc
237 :: draw-selection ( line pair editor -- )
238 pair [ editor font>> line offset>x gl-round ] map :> pair
239 editor selection-color>> gl-color
241 pair second pair first - 1 max editor line-height 2array
244 : draw-unselected-line ( line editor -- )
245 font>> swap draw-text ;
247 : draw-selected-line ( line pair editor -- )
249 [ nip draw-unselected-line ] [ draw-selection ] 3bi
253 [ [ first2 ] [ selection-color>> ] bi* <selection> ]
254 [ draw-unselected-line ] bi
258 : draw-default-text? ( editor -- ? )
259 { [ default-text>> ] [ model>> doc-string empty? ] } 1&& ;
261 : draw-default-text ( editor -- )
262 [ font>> clone line-color >>foreground ]
263 [ default-text>> ] bi draw-text ;
268 [ selected-lines get at ] dip over
269 [ draw-selected-line ] [ nip draw-unselected-line ] if ;
271 M: editor draw-gadget*
272 dup draw-default-text? [
273 [ draw-default-text ] [ draw-caret ] [ draw-preedit-underlines ] tri
275 dup compute-selection selected-lines [
276 [ draw-lines ] [ draw-caret ] [ draw-preedit-underlines ] tri
281 [ call-next-method ] keep ! at least as big as our min-rows/min-cols
282 ! Add some space for the caret.
283 [ font>> ] keep dup draw-default-text?
284 [ default-text>> ] [ control-value ] if
285 text-dim { 1 0 } v+ vmax ;
287 M: editor baseline font>> font-metrics ascent>> ;
289 M: editor cap-height font>> font-metrics cap-height>> ;
293 : contents-changed ( model editor -- )
294 [ [ nip caret>> ] [ drop ] 2bi '[ _ validate-loc ] (change-model) ]
295 [ [ nip mark>> ] [ drop ] 2bi '[ _ validate-loc ] (change-model) ]
296 [ nip relayout ] 2tri ;
298 : caret/mark-changed ( editor -- )
299 [ restart-blinking ] keep scroll>caret ;
303 M: editor model-changed
305 { [ 2dup model>> eq? ] [ contents-changed ] }
306 { [ 2dup caret>> eq? ] [ nip caret/mark-changed ] }
307 { [ 2dup mark>> eq? ] [ nip caret/mark-changed ] }
310 M: editor gadget-selection?
311 selection-start/end = not ;
313 M: editor gadget-selection
314 [ selection-start/end ] [ model>> ] bi doc-range ;
316 : remove-selection ( editor -- )
317 [ selection-start/end ] [ model>> ] bi remove-doc-range ;
319 M: editor user-input*
320 [ selection-start/end ] [ model>> ] bi set-doc-range t ;
322 M: editor temp-im-input
323 [ selection-start/end ] [ model>> ] bi set-doc-range* t ;
325 : editor-string ( editor -- string )
328 : set-editor-string ( string editor -- )
329 model>> set-doc-string ;
331 M: editor gadget-text* editor-string % ;
333 : extend-selection ( editor -- )
336 [ dup caret>> click-loc ] tri ;
338 : remove-preedit-text ( editor -- )
339 { [ preedit-start>> ] [ set-caret ]
340 [ preedit-end>> ] [ set-mark ]
344 : remove-preedit-info ( editor -- )
347 f >>preedit-selected-start
348 f >>preedit-selected-end
349 f >>preedit-selection-mode?
350 f >>preedit-underlines
353 : mouse-elt ( -- element )
357 } at one-line-elt or ;
359 : drag-direction? ( loc editor -- ? )
360 editor-mark before? ;
362 : drag-selection-caret ( loc editor element -- loc )
364 [ drag-direction? ] [ model>> ] 2bi
365 ] dip prev/next-elt ? ;
367 : drag-selection-mark ( loc editor element -- loc )
369 [ drag-direction? not ]
372 ] dip prev/next-elt ? ;
374 : drag-caret&mark ( editor -- caret mark )
375 [ clicked-loc ] [ mouse-elt ] bi
376 [ drag-selection-caret ]
377 [ drag-selection-mark ] 3bi ;
379 : drag-selection ( editor -- )
382 [ caret>> set-model ] tri ;
384 : editor-cut ( editor clipboard -- )
385 [ gadget-copy ] [ drop remove-selection ] 2bi ;
387 : delete/backspace ( editor quot -- )
388 over gadget-selection? [
389 drop remove-selection
391 [ [ [ editor-caret ] [ model>> ] bi ] dip call ]
396 : editor-delete ( editor elt -- )
397 '[ dupd _ next-elt ] delete/backspace ;
399 : editor-backspace ( editor elt -- )
400 '[ over [ _ prev-elt ] dip ] delete/backspace ;
402 : editor-select-prev ( editor elt -- )
403 '[ _ prev-elt ] change-caret ;
405 : editor-prev ( editor elt -- )
406 [ editor-select-prev ] [ drop mark>caret ] 2bi ;
408 : editor-select-next ( editor elt -- )
409 '[ _ next-elt ] change-caret ;
411 : editor-next ( editor elt -- )
412 dupd editor-select-next mark>caret ;
414 : editor-select ( from to editor -- )
415 [ mark>> set-model ] [ caret>> set-model ] bi-curry bi* ;
417 : select-elt ( editor elt -- )
418 [ [ [ editor-caret ] [ model>> ] bi ] dip prev/next-elt ] [ drop ] 2bi
421 : start-of-document ( editor -- ) doc-elt editor-prev ;
423 : end-of-document ( editor -- ) doc-elt editor-next ;
425 : position-caret ( editor -- )
426 mouse-elt dup one-char-elt =
427 [ drop dup extend-selection dup mark>> click-loc ]
430 : delete-previous-character ( editor -- )
431 char-elt editor-backspace ;
433 : delete-next-character ( editor -- )
434 char-elt editor-delete ;
436 : delete-previous-word ( editor -- )
437 word-elt editor-backspace ;
439 : delete-next-word ( editor -- )
440 word-elt editor-delete ;
442 : delete-to-start-of-line ( editor -- )
443 one-line-elt editor-backspace ;
445 : delete-to-end-of-line ( editor -- )
446 one-line-elt editor-delete ;
448 : delete-to-start-of-document ( editor -- )
449 doc-elt editor-delete ;
451 : delete-to-end-of-document ( editor -- )
452 doc-elt editor-delete ;
454 : com-undo ( editor -- ) model>> undo ;
456 : com-redo ( editor -- ) model>> redo ;
459 { undo-action com-undo }
460 { redo-action com-redo }
461 { T{ key-down f f "DELETE" } delete-next-character }
462 { T{ key-down f f "BACKSPACE" } delete-previous-character }
463 { T{ key-down f { S+ } "DELETE" } delete-next-character }
464 { T{ key-down f { S+ } "BACKSPACE" } delete-previous-character }
465 { T{ key-down f ${ os macosx? A+ C+ ? } "DELETE" } delete-next-word }
466 { T{ key-down f ${ os macosx? A+ C+ ? } "BACKSPACE" } delete-previous-word }
467 { T{ key-down f ${ os macosx? M+ A+ ? } "DELETE" } delete-to-end-of-line }
468 { T{ key-down f ${ os macosx? M+ A+ ? } "BACKSPACE" } delete-to-start-of-line }
470 { T{ key-down f { C+ } "DELETE" } delete-next-character }
471 { T{ key-down f { C+ } "BACKSPACE" } delete-previous-character }
472 } append ] when define-command-map
474 : com-paste ( editor -- ) clipboard get paste-clipboard ;
476 : paste-selection ( editor -- ) ui.clipboards:selection get paste-clipboard ;
478 : com-cut ( editor -- ) clipboard get editor-cut ;
480 editor "clipboard" f {
481 { cut-action com-cut }
482 { copy-action com-copy }
483 { paste-action com-paste }
484 { T{ button-up } com-copy-selection }
485 { T{ button-up f f 2 } paste-selection }
488 : previous-character ( editor -- )
489 dup gadget-selection? [
490 dup selection-start/end drop
491 over set-caret mark>caret
496 : next-character ( editor -- )
497 dup gadget-selection? [
498 dup selection-start/end nip
499 over set-caret mark>caret
504 : previous-word ( editor -- ) word-elt editor-prev ;
506 : next-word ( editor -- ) word-elt editor-next ;
508 : start-of-line ( editor -- ) one-line-elt editor-prev ;
510 : end-of-line ( editor -- ) one-line-elt editor-next ;
512 : start-of-paragraph ( editor -- ) paragraph-elt editor-prev ;
514 : end-of-paragraph ( editor -- ) paragraph-elt editor-next ;
516 editor "caret-motion" f {
517 { T{ button-down } position-caret }
518 { T{ key-down f f "LEFT" } previous-character }
519 { T{ key-down f f "RIGHT" } next-character }
520 { T{ key-down f ${ os macosx? A+ C+ ? } "LEFT" } previous-word }
521 { T{ key-down f ${ os macosx? A+ C+ ? } "RIGHT" } next-word }
522 { T{ key-down f f "HOME" } start-of-line }
523 { T{ key-down f f "END" } end-of-line }
524 { T{ key-down f ${ os macosx? A+ C+ ? } "UP" } start-of-paragraph }
525 { T{ key-down f ${ os macosx? A+ C+ ? } "DOWN" } end-of-paragraph }
526 { T{ key-down f ${ os macosx? A+ C+ ? } "HOME" } start-of-document }
527 { T{ key-down f ${ os macosx? A+ C+ ? } "END" } end-of-document }
529 { T{ key-down f { M+ } "LEFT" } start-of-line }
530 { T{ key-down f { M+ } "RIGHT" } end-of-line }
531 { T{ key-down f { M+ } "UP" } start-of-paragraph }
532 { T{ key-down f { M+ } "DOWN" } end-of-paragraph }
533 { T{ key-down f { M+ } "HOME" } start-of-document }
534 { T{ key-down f { M+ } "END" } end-of-document }
535 } append ] when define-command-map
537 : clear-editor ( editor -- )
540 : select-all ( editor -- ) doc-elt select-elt ;
542 : select-line ( editor -- ) one-line-elt select-elt ;
544 : select-word ( editor -- ) one-word-elt select-elt ;
546 : selected-token ( editor -- string )
547 dup gadget-selection?
548 [ dup select-word ] unless
551 : select-previous-character ( editor -- )
552 char-elt editor-select-prev ;
554 : select-next-character ( editor -- )
555 char-elt editor-select-next ;
557 : select-previous-word ( editor -- )
558 word-elt editor-select-prev ;
560 : select-next-word ( editor -- )
561 word-elt editor-select-next ;
563 : select-start-of-line ( editor -- )
564 one-line-elt editor-select-prev ;
566 : select-end-of-line ( editor -- )
567 one-line-elt editor-select-next ;
569 : select-start-of-paragraph ( editor -- )
570 paragraph-elt editor-select-prev ;
572 : select-end-of-paragraph ( editor -- )
573 paragraph-elt editor-select-next ;
575 : select-start-of-document ( editor -- )
576 doc-elt editor-select-prev ;
578 : select-end-of-document ( editor -- )
579 doc-elt editor-select-next ;
581 editor "selection" f {
582 { T{ button-down f { S+ } 1 } extend-selection }
583 { T{ button-up f { S+ } 1 } com-copy-selection }
584 { T{ drag { # 1 } } drag-selection }
585 { gain-focus focus-editor }
586 { lose-focus unfocus-editor }
587 { delete-action remove-selection }
588 { select-all-action select-all }
589 { T{ key-down f { C+ } "l" } select-line }
590 { T{ key-down f { S+ } "LEFT" } select-previous-character }
591 { T{ key-down f { S+ } "RIGHT" } select-next-character }
592 { T{ key-down f ${ S+ os macosx? A+ C+ ? } "LEFT" } select-previous-word }
593 { T{ key-down f ${ S+ os macosx? A+ C+ ? } "RIGHT" } select-next-word }
594 { T{ key-down f { S+ } "HOME" } select-start-of-line }
595 { T{ key-down f { S+ } "END" } select-end-of-line }
596 { T{ key-down f ${ S+ os macosx? A+ C+ ? } "UP" } select-start-of-paragraph }
597 { T{ key-down f ${ S+ os macosx? A+ C+ ? } "DOWN" } select-end-of-paragraph }
598 { T{ key-down f ${ S+ os macosx? A+ C+ ? } "HOME" } select-start-of-document }
599 { T{ key-down f ${ S+ os macosx? A+ C+ ? } "END" } select-end-of-document }
601 { T{ key-down f { S+ M+ } "LEFT" } select-start-of-line }
602 { T{ key-down f { S+ M+ } "RIGHT" } select-end-of-line }
603 { T{ key-down f { S+ M+ } "UP" } select-start-of-paragraph }
604 { T{ key-down f { S+ M+ } "DOWN" } select-end-of-paragraph }
605 { T{ key-down f { S+ M+ } "HOME" } select-start-of-document }
606 { T{ key-down f { S+ M+ } "END" } select-end-of-document }
607 } append ] when define-command-map
609 : editor-menu ( editor -- )
617 } show-commands-menu ;
620 ! { T{ button-down f f 2 } paste-selection }
621 { T{ button-down f f 3 } editor-menu }
625 TUPLE: multiline-editor < editor ;
627 : <multiline-editor> ( -- editor )
628 multiline-editor new-editor ;
630 : previous-line ( editor -- ) line-elt editor-prev ;
632 : next-line ( editor -- ) line-elt editor-next ;
636 : page-elt ( editor n -- editor element )
637 over visible-lines 1 - min 1 max <page-elt> ;
639 : prev-page-elt ( editor -- editor element )
640 dup editor-caret first page-elt ;
642 : next-page-elt ( editor -- editor element )
643 dup [ control-value length 1 - ] [ editor-caret first ] bi - page-elt ;
647 : previous-page ( editor -- ) prev-page-elt editor-prev ;
649 : next-page ( editor -- ) next-page-elt editor-next ;
651 : select-previous-line ( editor -- ) line-elt editor-select-prev ;
653 : select-next-line ( editor -- ) line-elt editor-select-next ;
655 : select-previous-page ( editor -- ) prev-page-elt editor-select-prev ;
657 : select-next-page ( editor -- ) next-page-elt editor-select-next ;
659 : insert-newline ( editor -- )
660 "\n" swap user-input* drop ;
662 : change-selection ( editor quot -- )
663 '[ gadget-selection @ ] [ user-input* drop ] bi ; inline
667 : join-lines ( string -- string' )
669 [ rest-slice [ [ blank? ] trim-head-slice ] map! drop ]
670 [ but-last-slice [ [ blank? ] trim-tail-slice ] map! drop ]
674 : last-line? ( document line -- ? )
675 [ last-line# ] dip = ;
677 : prev-line-and-this ( document line -- start end )
678 swap [ drop 1 - 0 2array ] [ line-end ] 2bi ;
680 : join-with-prev ( document line -- )
681 [ prev-line-and-this ] [ drop ] 2bi
682 [ join-lines ] change-doc-range ;
684 : this-line-and-next ( document line -- start end )
685 swap [ drop 0 2array ] [ [ 1 + ] dip line-end ] 2bi ;
687 : join-with-next ( document line -- )
688 [ this-line-and-next ] [ drop ] 2bi
689 [ join-lines ] change-doc-range ;
693 : com-join-lines ( editor -- )
694 dup gadget-selection?
695 [ [ join-lines ] change-selection ] [
696 [ model>> ] [ editor-caret first ] bi {
697 { [ over last-line# 0 = ] [ 2drop ] }
698 { [ 2dup last-line? ] [ join-with-prev ] }
703 multiline-editor "multiline" f {
704 { T{ key-down f f "UP" } previous-line }
705 { T{ key-down f f "DOWN" } next-line }
706 { T{ key-down f { S+ } "UP" } select-previous-line }
707 { T{ key-down f { S+ } "DOWN" } select-next-line }
708 { T{ key-down f f "PAGE_UP" } previous-page }
709 { T{ key-down f f "PAGE_DOWN" } next-page }
710 { T{ key-down f { S+ } "PAGE_UP" } select-previous-page }
711 { T{ key-down f { S+ } "PAGE_DOWN" } select-next-page }
712 { T{ key-down f f "RET" } insert-newline }
713 { T{ key-down f { S+ } "RET" } insert-newline }
714 { T{ key-down f f "ENTER" } insert-newline }
715 { T{ key-down f { S+ } "ENTER" } insert-newline }
716 { T{ key-down f { C+ } "j" } com-join-lines }
719 TUPLE: source-editor < multiline-editor ;
721 : <source-editor> ( -- editor )
722 source-editor new-editor ;
725 : <element-model> ( editor element -- model )
726 [ [ caret>> ] [ model>> ] bi ] dip
727 '[ _ _ elt-string ] <arrow> ;
729 ! Fields wrap an editor
730 TUPLE: field < border editor min-cols max-cols ;
734 : field-theme ( gadget -- gadget )
737 field-border-color <solid> >>boundary ; inline
739 : <field-border> ( gadget -- border )
740 border new-border field-theme ;
744 : new-field ( class -- gadget )
745 [ <editor> ] dip new-border
746 dup gadget-child >>editor
749 ! For line-gadget-width
750 M: field font>> editor>> font>> ;
754 [ editor>> pref-dim ]
755 [ [ line-gadget-width ] [ drop second ] 2bi 2array ]
756 tri border-pref-dim ;
758 M: field default-text>> editor>> default-text>> ;
760 M: field default-text<< editor>> default-text<< ;
762 TUPLE: model-field < field field-model ;
764 : <model-field> ( model -- gadget )
765 model-field new-field
768 M: model-field graft*
769 [ [ field-model>> value>> ] [ editor>> ] bi set-editor-string ]
770 [ dup editor>> model>> add-connection ]
773 M: model-field ungraft*
774 dup editor>> model>> remove-connection ;
776 M: model-field model-changed
777 nip [ editor>> editor-string ] [ field-model>> ] bi set-model ;
779 TUPLE: action-field < field quot ;
781 : <action-field> ( quot: ( string -- ) -- gadget )
782 action-field [ <editor> ] dip new-border
783 dup gadget-child >>editor
787 : invoke-action-field ( field -- )
788 [ editor>> editor-string ]
789 [ editor>> clear-editor ]
791 tri call( string -- ) ;
794 { T{ key-down f f "RET" } [ invoke-action-field ] }
797 : readline-bindings ( editor-class -- )
799 { T{ key-down f { C+ } "p" } previous-line }
800 { T{ key-down f { C+ } "n" } next-line }
801 { T{ key-down f { C+ } "b" } previous-character }
802 { T{ key-down f { C+ } "f" } next-character }
803 { T{ key-down f { C+ } "a" } start-of-line }
804 { T{ key-down f { C+ } "e" } end-of-line }
805 ! { T{ key-down f { C+ } "t" } transpose-character }
806 { T{ key-down f { C+ } "d" } delete-next-character }
807 { T{ key-down f { C+ } "h" } delete-previous-character }
808 { T{ key-down f { C+ } "u" } delete-to-start-of-line }
809 { T{ key-down f { C+ } "k" } delete-to-end-of-line }
810 { T{ key-down f { C+ } "w" } delete-previous-word }
811 } define-command-map ;