1 ! Copyright (C) 2006, 2009 Slava Pestov
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: accessors alarms arrays assocs calendar colors.constants
4 combinators combinators.short-circuit documents
5 documents.elements fry grouping kernel locals make math
6 math.functions math.order math.ranges math.rectangles
7 math.vectors models models.arrow namespaces opengl sequences
8 sorting splitting 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 ui.gestures ui.pens.solid ui.render ui.text unicode.categories ;
12 EXCLUDE: fonts => selection ;
13 IN: ui.gadgets.editors
15 TUPLE: editor < line-gadget
18 focused? blink blink-alarm ;
22 : <loc> ( -- loc ) { 0 0 } <model> ;
24 : init-editor-locs ( editor -- editor )
28 : editor-theme ( editor -- editor )
29 COLOR: red >>caret-color
30 monospace-font >>font ; inline
34 : new-editor ( class -- editor )
40 : <editor> ( -- editor )
45 : activate-editor-model ( editor model -- )
47 [ nip activate-model ]
48 [ swap model>> add-loc ] 2tri ;
50 : deactivate-editor-model ( editor model -- )
52 [ nip deactivate-model ]
53 [ swap model>> remove-loc ] 2tri ;
55 : blink-caret ( editor -- )
56 [ not ] change-blink relayout-1 ;
58 SYMBOL: blink-interval
60 750 milliseconds blink-interval set-global
62 : stop-blinking ( editor -- )
63 blink-alarm>> [ stop-alarm ] when* ;
65 : start-blinking ( editor -- )
67 blink-alarm>> [ restart-alarm ] when* ;
69 : restart-blinking ( editor -- )
79 [ dup caret>> activate-editor-model ]
80 [ dup mark>> activate-editor-model ]
83 '[ _ blink-caret ] blink-interval get dup <alarm>
88 [ [ stop-blinking ] [ f >>blink-alarm drop ] bi ]
89 [ dup caret>> deactivate-editor-model ]
90 [ dup mark>> deactivate-editor-model ] tri ;
92 : editor-caret ( editor -- loc ) caret>> value>> ;
94 : editor-mark ( editor -- loc ) mark>> value>> ;
96 : set-caret ( loc editor -- )
97 [ model>> validate-loc ] [ caret>> ] bi set-model ;
99 : change-caret ( editor quot -- )
100 [ [ [ editor-caret ] [ model>> ] bi ] dip call ] [ drop ] 2bi
103 : mark>caret ( editor -- )
104 [ editor-caret ] [ mark>> ] bi set-model ;
106 : change-caret&mark ( editor quot -- )
107 [ change-caret ] [ drop mark>caret ] 2bi ; inline
109 : editor-line ( n editor -- str ) control-value nth ;
111 :: point>loc ( point editor -- loc )
112 point second editor y>line {
113 { [ dup 0 < ] [ drop { 0 0 } ] }
114 { [ dup editor model>> last-line# > ] [ drop editor model>> doc-end ] }
124 : clicked-loc ( editor -- loc )
125 [ hand-rel ] keep point>loc ;
127 : click-loc ( editor model -- )
128 [ clicked-loc ] dip set-model ;
130 : focus-editor ( editor -- )
131 [ start-blinking ] [ t >>focused? relayout-1 ] bi ;
133 : unfocus-editor ( editor -- )
134 [ stop-blinking ] [ f >>focused? relayout-1 ] bi ;
136 : loc>x ( loc editor -- x )
137 [ first2 swap ] dip [ editor-line ] [ font>> ] bi swap offset>x round ;
139 : loc>point ( loc editor -- loc )
140 [ loc>x ] [ [ first ] dip line>y ceiling ] 2bi 2array ;
142 : caret-loc ( editor -- loc )
143 [ editor-caret ] keep loc>point ;
145 : caret-dim ( editor -- dim )
146 [ 0 ] dip line-height 2array ;
148 : scroll>caret ( editor -- )
149 dup graft-state>> second [
151 [ caret-loc ] [ caret-dim { 2 1 } v+ ] bi <rect>
157 : draw-caret? ( editor -- ? )
158 { [ focused?>> ] [ blink>> ] } 1&& ;
160 : draw-caret ( editor -- )
162 [ caret-color>> gl-color ]
164 [ caret-loc ] [ caret-dim ] bi
169 : selection-start/end ( editor -- start end )
170 [ editor-mark ] [ editor-caret ] bi sort-pair ;
172 SYMBOL: selected-lines
174 TUPLE: selected-line start end first? last? ;
176 : compute-selection ( editor -- assoc )
177 dup gadget-selection? [
178 [ selection-start/end [ [ first ] bi@ [a,b] ] [ ] 2bi ]
180 '[ [ _ _ ] [ _ start/end-on-line ] bi 2array ] H{ } map>assoc
183 :: draw-selection ( line pair editor -- )
184 pair [ editor font>> line offset>x ] map :> pair
185 editor selection-color>> gl-color
187 pair second pair first - round 1 max editor line-height 2array
190 : draw-unselected-line ( line editor -- )
191 font>> swap draw-text ;
193 : draw-selected-line ( line pair editor -- )
195 [ nip draw-unselected-line ] [ draw-selection ] 3bi
199 [ [ first2 ] [ selection-color>> ] bi* <selection> ]
200 [ draw-unselected-line ] bi
206 M: editor draw-line ( line index editor -- )
207 [ selected-lines get at ] dip over
208 [ draw-selected-line ] [ nip draw-unselected-line ] if ;
210 M: editor draw-gadget*
211 dup compute-selection selected-lines [
212 [ draw-lines ] [ draw-caret ] bi
216 ! Add some space for the caret.
217 [ font>> ] [ control-value ] bi text-dim { 1 0 } v+ ;
219 M: editor baseline font>> font-metrics ascent>> ;
221 M: editor cap-height font>> font-metrics cap-height>> ;
225 : contents-changed ( model editor -- )
226 [ [ nip caret>> ] [ drop ] 2bi '[ _ validate-loc ] (change-model) ]
227 [ [ nip mark>> ] [ drop ] 2bi '[ _ validate-loc ] (change-model) ]
228 [ nip relayout ] 2tri ;
230 : caret/mark-changed ( editor -- )
231 [ restart-blinking ] keep scroll>caret ;
235 M: editor model-changed
237 { [ 2dup model>> eq? ] [ contents-changed ] }
238 { [ 2dup caret>> eq? ] [ nip caret/mark-changed ] }
239 { [ 2dup mark>> eq? ] [ nip caret/mark-changed ] }
242 M: editor gadget-selection?
243 selection-start/end = not ;
245 M: editor gadget-selection
246 [ selection-start/end ] [ model>> ] bi doc-range ;
248 : remove-selection ( editor -- )
249 [ selection-start/end ] [ model>> ] bi remove-doc-range ;
251 M: editor user-input*
252 [ selection-start/end ] [ model>> ] bi set-doc-range t ;
254 : editor-string ( editor -- string )
257 : set-editor-string ( string editor -- )
258 model>> set-doc-string ;
260 M: editor gadget-text* editor-string % ;
262 : extend-selection ( editor -- )
265 [ dup caret>> click-loc ] tri ;
267 : mouse-elt ( -- element )
271 } at one-line-elt or ;
273 : drag-direction? ( loc editor -- ? )
274 editor-mark before? ;
276 : drag-selection-caret ( loc editor element -- loc )
278 [ drag-direction? ] [ model>> ] 2bi
279 ] dip prev/next-elt ? ;
281 : drag-selection-mark ( loc editor element -- loc )
283 [ drag-direction? not ]
286 ] dip prev/next-elt ? ;
288 : drag-caret&mark ( editor -- caret mark )
289 [ clicked-loc ] [ mouse-elt ] bi
290 [ drag-selection-caret ]
291 [ drag-selection-mark ] 3bi ;
293 : drag-selection ( editor -- )
296 [ caret>> set-model ] tri ;
298 : editor-cut ( editor clipboard -- )
299 [ gadget-copy ] [ drop remove-selection ] 2bi ;
301 : delete/backspace ( editor quot -- )
302 over gadget-selection? [
303 drop remove-selection
305 [ [ [ editor-caret ] [ model>> ] bi ] dip call ]
310 : editor-delete ( editor elt -- )
311 '[ dupd _ next-elt ] delete/backspace ;
313 : editor-backspace ( editor elt -- )
314 '[ over [ _ prev-elt ] dip ] delete/backspace ;
316 : editor-select-prev ( editor elt -- )
317 '[ _ prev-elt ] change-caret ;
319 : editor-prev ( editor elt -- )
320 [ editor-select-prev ] [ drop mark>caret ] 2bi ;
322 : editor-select-next ( editor elt -- )
323 '[ _ next-elt ] change-caret ;
325 : editor-next ( editor elt -- )
326 dupd editor-select-next mark>caret ;
328 : editor-select ( from to editor -- )
329 [ mark>> set-model ] [ caret>> set-model ] bi-curry bi* ;
331 : select-elt ( editor elt -- )
332 [ [ [ editor-caret ] [ model>> ] bi ] dip prev/next-elt ] [ drop ] 2bi
335 : start-of-document ( editor -- ) doc-elt editor-prev ;
337 : end-of-document ( editor -- ) doc-elt editor-next ;
339 : position-caret ( editor -- )
340 mouse-elt dup one-char-elt =
341 [ drop dup extend-selection dup mark>> click-loc ]
344 : delete-next-character ( editor -- )
345 char-elt editor-delete ;
347 : delete-previous-character ( editor -- )
348 char-elt editor-backspace ;
350 : delete-previous-word ( editor -- )
351 word-elt editor-delete ;
353 : delete-next-word ( editor -- )
354 word-elt editor-backspace ;
356 : delete-to-start-of-line ( editor -- )
357 one-line-elt editor-delete ;
359 : delete-to-end-of-line ( editor -- )
360 one-line-elt editor-backspace ;
362 : com-undo ( editor -- ) model>> undo ;
364 : com-redo ( editor -- ) model>> redo ;
367 { undo-action com-undo }
368 { redo-action com-redo }
369 { T{ key-down f f "DELETE" } delete-next-character }
370 { T{ key-down f f "BACKSPACE" } delete-previous-character }
371 { T{ key-down f { S+ } "BACKSPACE" } delete-previous-character }
372 { T{ key-down f { C+ } "DELETE" } delete-previous-word }
373 { T{ key-down f { C+ } "BACKSPACE" } delete-next-word }
374 { T{ key-down f { A+ } "DELETE" } delete-to-start-of-line }
375 { T{ key-down f { A+ } "BACKSPACE" } delete-to-end-of-line }
378 : com-paste ( editor -- ) clipboard get paste-clipboard ;
380 : paste-selection ( editor -- ) selection get paste-clipboard ;
382 : com-cut ( editor -- ) clipboard get editor-cut ;
384 editor "clipboard" f {
385 { cut-action com-cut }
386 { copy-action com-copy }
387 { paste-action com-paste }
388 { T{ button-up } com-copy-selection }
389 { T{ button-up f f 2 } paste-selection }
392 : previous-character ( editor -- )
393 dup gadget-selection? [
394 dup selection-start/end drop
395 over set-caret mark>caret
400 : next-character ( editor -- )
401 dup gadget-selection? [
402 dup selection-start/end nip
403 over set-caret mark>caret
408 : previous-word ( editor -- ) word-elt editor-prev ;
410 : next-word ( editor -- ) word-elt editor-next ;
412 : start-of-line ( editor -- ) one-line-elt editor-prev ;
414 : end-of-line ( editor -- ) one-line-elt editor-next ;
416 editor "caret-motion" f {
417 { T{ button-down } position-caret }
418 { T{ key-down f f "LEFT" } previous-character }
419 { T{ key-down f f "RIGHT" } next-character }
420 { T{ key-down f { C+ } "LEFT" } previous-word }
421 { T{ key-down f { C+ } "RIGHT" } next-word }
422 { T{ key-down f f "HOME" } start-of-line }
423 { T{ key-down f f "END" } end-of-line }
424 { T{ key-down f { C+ } "HOME" } start-of-document }
425 { T{ key-down f { C+ } "END" } end-of-document }
428 : clear-editor ( editor -- )
431 : select-all ( editor -- ) doc-elt select-elt ;
433 : select-line ( editor -- ) one-line-elt select-elt ;
435 : select-word ( editor -- ) one-word-elt select-elt ;
437 : selected-token ( editor -- string )
438 dup gadget-selection?
439 [ dup select-word ] unless
442 : select-previous-character ( editor -- )
443 char-elt editor-select-prev ;
445 : select-next-character ( editor -- )
446 char-elt editor-select-next ;
448 : select-previous-word ( editor -- )
449 word-elt editor-select-prev ;
451 : select-next-word ( editor -- )
452 word-elt editor-select-next ;
454 : select-start-of-line ( editor -- )
455 one-line-elt editor-select-prev ;
457 : select-end-of-line ( editor -- )
458 one-line-elt editor-select-next ;
460 : select-start-of-document ( editor -- )
461 doc-elt editor-select-prev ;
463 : select-end-of-document ( editor -- )
464 doc-elt editor-select-next ;
466 editor "selection" f {
467 { T{ button-down f { S+ } 1 } extend-selection }
468 { T{ button-up f { S+ } 1 } com-copy-selection }
469 { T{ drag } drag-selection }
470 { gain-focus focus-editor }
471 { lose-focus unfocus-editor }
472 { delete-action remove-selection }
473 { select-all-action select-all }
474 { T{ key-down f { C+ } "l" } select-line }
475 { T{ key-down f { S+ } "LEFT" } select-previous-character }
476 { T{ key-down f { S+ } "RIGHT" } select-next-character }
477 { T{ key-down f { S+ C+ } "LEFT" } select-previous-word }
478 { T{ key-down f { S+ C+ } "RIGHT" } select-next-word }
479 { T{ key-down f { S+ } "HOME" } select-start-of-line }
480 { T{ key-down f { S+ } "END" } select-end-of-line }
481 { T{ key-down f { S+ C+ } "HOME" } select-start-of-document }
482 { T{ key-down f { S+ C+ } "END" } select-end-of-document }
485 : editor-menu ( editor -- )
493 } show-commands-menu ;
496 { T{ button-down f f 3 } editor-menu }
500 TUPLE: multiline-editor < editor ;
502 : <multiline-editor> ( -- editor )
503 multiline-editor new-editor ;
505 : previous-line ( editor -- ) line-elt editor-prev ;
507 : next-line ( editor -- ) line-elt editor-next ;
511 : page-elt ( editor -- editor element ) dup visible-lines 1 - <page-elt> ;
515 : previous-page ( editor -- ) page-elt editor-prev ;
517 : next-page ( editor -- ) page-elt editor-next ;
519 : select-previous-line ( editor -- ) line-elt editor-select-prev ;
521 : select-next-line ( editor -- ) line-elt editor-select-next ;
523 : select-previous-page ( editor -- ) page-elt editor-select-prev ;
525 : select-next-page ( editor -- ) page-elt editor-select-next ;
527 : insert-newline ( editor -- )
528 "\n" swap user-input* drop ;
530 : change-selection ( editor quot -- )
531 '[ gadget-selection @ ] [ user-input* drop ] bi ; inline
535 : join-lines ( string -- string' )
537 [ rest-slice [ [ blank? ] trim-head-slice ] map! drop ]
538 [ but-last-slice [ [ blank? ] trim-tail-slice ] map! drop ]
542 : last-line? ( document line -- ? )
543 [ last-line# ] dip = ;
545 : prev-line-and-this ( document line -- start end )
547 [ drop 1 - 0 2array ]
548 [ [ drop ] [ doc-line length ] 2bi 2array ]
551 : join-with-prev ( document line -- )
552 [ prev-line-and-this ] [ drop ] 2bi
553 [ join-lines ] change-doc-range ;
555 : this-line-and-next ( document line -- start end )
558 [ [ 1 + ] dip [ drop ] [ doc-line length ] 2bi 2array ]
561 : join-with-next ( document line -- )
562 [ this-line-and-next ] [ drop ] 2bi
563 [ join-lines ] change-doc-range ;
567 : com-join-lines ( editor -- )
568 dup gadget-selection?
569 [ [ join-lines ] change-selection ] [
570 [ model>> ] [ editor-caret first ] bi {
571 { [ over last-line# 0 = ] [ 2drop ] }
572 { [ 2dup last-line? ] [ join-with-prev ] }
577 multiline-editor "multiline" f {
578 { T{ key-down f f "UP" } previous-line }
579 { T{ key-down f f "DOWN" } next-line }
580 { T{ key-down f { S+ } "UP" } select-previous-line }
581 { T{ key-down f { S+ } "DOWN" } select-next-line }
582 { T{ key-down f f "PAGE_UP" } previous-page }
583 { T{ key-down f f "PAGE_DOWN" } next-page }
584 { T{ key-down f { S+ } "PAGE_UP" } select-previous-page }
585 { T{ key-down f { S+ } "PAGE_DOWN" } select-next-page }
586 { T{ key-down f f "RET" } insert-newline }
587 { T{ key-down f { S+ } "RET" } insert-newline }
588 { T{ key-down f f "ENTER" } insert-newline }
589 { T{ key-down f { C+ } "j" } com-join-lines }
592 TUPLE: source-editor < multiline-editor ;
594 : <source-editor> ( -- editor )
595 source-editor new-editor ;
598 : <element-model> ( editor element -- model )
599 [ [ caret>> ] [ model>> ] bi ] dip
600 '[ _ _ elt-string ] <arrow> ;
602 ! Fields wrap an editor
603 TUPLE: field < border editor min-cols max-cols ;
607 : field-theme ( gadget -- gadget )
610 COLOR: gray <solid> >>boundary ; inline
612 : <field-border> ( gadget -- border )
619 : new-field ( class -- gadget )
620 [ <editor> ] dip new-border
621 dup gadget-child >>editor
624 ! For line-gadget-width
625 M: field font>> editor>> font>> ;
629 [ editor>> pref-dim ]
630 [ [ line-gadget-width ] [ drop second ] 2bi 2array ]
631 tri border-pref-dim ;
633 TUPLE: model-field < field field-model ;
635 : <model-field> ( model -- gadget )
636 model-field new-field
639 M: model-field graft*
640 [ [ field-model>> value>> ] [ editor>> ] bi set-editor-string ]
641 [ dup editor>> model>> add-connection ]
644 M: model-field ungraft*
645 dup editor>> model>> remove-connection ;
647 M: model-field model-changed
648 nip [ editor>> editor-string ] [ field-model>> ] bi set-model ;
650 TUPLE: action-field < field quot ;
652 : <action-field> ( quot -- gadget )
653 action-field new-field
656 : invoke-action-field ( field -- )
657 [ editor>> editor-string ]
658 [ editor>> clear-editor ]
660 tri call( string -- ) ;
663 { T{ key-down f f "RET" } [ invoke-action-field ] }