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 [ [ cancel-alarm ] when* f ] change-blink-alarm drop ;
65 : start-blinking ( editor -- )
68 dup '[ _ blink-caret ] blink-interval get every
72 : restart-blinking ( editor -- )
82 [ dup caret>> activate-editor-model ]
83 [ dup mark>> activate-editor-model ] bi ;
87 [ dup caret>> deactivate-editor-model ]
88 [ dup mark>> deactivate-editor-model ] tri ;
90 : editor-caret ( editor -- loc ) caret>> value>> ;
92 : editor-mark ( editor -- loc ) mark>> value>> ;
94 : set-caret ( loc editor -- )
95 [ model>> validate-loc ] [ caret>> ] bi set-model ;
97 : change-caret ( editor quot -- )
98 [ [ [ editor-caret ] [ model>> ] bi ] dip call ] [ drop ] 2bi
101 : mark>caret ( editor -- )
102 [ editor-caret ] [ mark>> ] bi set-model ;
104 : change-caret&mark ( editor quot -- )
105 [ change-caret ] [ drop mark>caret ] 2bi ; inline
107 : editor-line ( n editor -- str ) control-value nth ;
109 :: point>loc ( point editor -- loc )
110 point second editor y>line {
111 { [ dup 0 < ] [ drop { 0 0 } ] }
112 { [ dup editor model>> last-line# > ] [ drop editor model>> doc-end ] }
122 : clicked-loc ( editor -- loc )
123 [ hand-rel ] keep point>loc ;
125 : click-loc ( editor model -- )
126 [ clicked-loc ] dip set-model ;
128 : focus-editor ( editor -- )
129 [ start-blinking ] [ t >>focused? relayout-1 ] bi ;
131 : unfocus-editor ( editor -- )
132 [ stop-blinking ] [ f >>focused? relayout-1 ] bi ;
134 : loc>x ( loc editor -- x )
135 [ first2 swap ] dip [ editor-line ] [ font>> ] bi swap offset>x round ;
137 : loc>point ( loc editor -- loc )
138 [ loc>x ] [ [ first ] dip line>y ceiling ] 2bi 2array ;
140 : caret-loc ( editor -- loc )
141 [ editor-caret ] keep loc>point ;
143 : caret-dim ( editor -- dim )
144 [ 0 ] dip line-height 2array ;
146 : scroll>caret ( editor -- )
147 dup graft-state>> second [
149 [ caret-loc ] [ caret-dim { 2 1 } v+ ] bi <rect>
155 : draw-caret? ( editor -- ? )
156 { [ focused?>> ] [ blink>> ] } 1&& ;
158 : draw-caret ( editor -- )
160 [ caret-color>> gl-color ]
162 [ caret-loc ] [ caret-dim ] bi
167 : selection-start/end ( editor -- start end )
168 [ editor-mark ] [ editor-caret ] bi sort-pair ;
170 SYMBOL: selected-lines
172 TUPLE: selected-line start end first? last? ;
174 : compute-selection ( editor -- assoc )
175 dup gadget-selection? [
176 [ selection-start/end [ [ first ] bi@ [a,b] ] [ ] 2bi ]
178 '[ [ _ _ ] [ _ start/end-on-line ] bi 2array ] H{ } map>assoc
181 :: draw-selection ( line pair editor -- )
182 pair [ editor font>> line offset>x ] map :> pair
183 editor selection-color>> gl-color
185 pair second pair first - round 1 max editor line-height 2array
188 : draw-unselected-line ( line editor -- )
189 font>> swap draw-text ;
191 : draw-selected-line ( line pair editor -- )
193 [ nip draw-unselected-line ] [ draw-selection ] 3bi
197 [ [ first2 ] [ selection-color>> ] bi* <selection> ]
198 [ draw-unselected-line ] bi
204 M: editor draw-line ( line index editor -- )
205 [ selected-lines get at ] dip over
206 [ draw-selected-line ] [ nip draw-unselected-line ] if ;
208 M: editor draw-gadget*
209 dup compute-selection selected-lines [
210 [ draw-lines ] [ draw-caret ] bi
214 ! Add some space for the caret.
215 [ font>> ] [ control-value ] bi text-dim { 1 0 } v+ ;
217 M: editor baseline font>> font-metrics ascent>> ;
219 M: editor cap-height font>> font-metrics cap-height>> ;
223 : contents-changed ( model editor -- )
224 [ [ nip caret>> ] [ drop ] 2bi '[ _ validate-loc ] (change-model) ]
225 [ [ nip mark>> ] [ drop ] 2bi '[ _ validate-loc ] (change-model) ]
226 [ nip relayout ] 2tri ;
228 : caret/mark-changed ( editor -- )
229 [ restart-blinking ] keep scroll>caret ;
233 M: editor model-changed
235 { [ 2dup model>> eq? ] [ contents-changed ] }
236 { [ 2dup caret>> eq? ] [ nip caret/mark-changed ] }
237 { [ 2dup mark>> eq? ] [ nip caret/mark-changed ] }
240 M: editor gadget-selection?
241 selection-start/end = not ;
243 M: editor gadget-selection
244 [ selection-start/end ] [ model>> ] bi doc-range ;
246 : remove-selection ( editor -- )
247 [ selection-start/end ] [ model>> ] bi remove-doc-range ;
249 M: editor user-input*
250 [ selection-start/end ] [ model>> ] bi set-doc-range t ;
252 : editor-string ( editor -- string )
255 : set-editor-string ( string editor -- )
256 model>> set-doc-string ;
258 M: editor gadget-text* editor-string % ;
260 : extend-selection ( editor -- )
263 [ dup caret>> click-loc ] tri ;
265 : mouse-elt ( -- element )
269 } at one-line-elt or ;
271 : drag-direction? ( loc editor -- ? )
272 editor-mark before? ;
274 : drag-selection-caret ( loc editor element -- loc )
276 [ drag-direction? ] [ model>> ] 2bi
277 ] dip prev/next-elt ? ;
279 : drag-selection-mark ( loc editor element -- loc )
281 [ drag-direction? not ]
284 ] dip prev/next-elt ? ;
286 : drag-caret&mark ( editor -- caret mark )
287 [ clicked-loc ] [ mouse-elt ] bi
288 [ drag-selection-caret ]
289 [ drag-selection-mark ] 3bi ;
291 : drag-selection ( editor -- )
294 [ caret>> set-model ] tri ;
296 : editor-cut ( editor clipboard -- )
297 [ gadget-copy ] [ drop remove-selection ] 2bi ;
299 : delete/backspace ( editor quot -- )
300 over gadget-selection? [
301 drop remove-selection
303 [ [ [ editor-caret ] [ model>> ] bi ] dip call ]
308 : editor-delete ( editor elt -- )
309 '[ dupd _ next-elt ] delete/backspace ;
311 : editor-backspace ( editor elt -- )
312 '[ over [ _ prev-elt ] dip ] delete/backspace ;
314 : editor-select-prev ( editor elt -- )
315 '[ _ prev-elt ] change-caret ;
317 : editor-prev ( editor elt -- )
318 [ editor-select-prev ] [ drop mark>caret ] 2bi ;
320 : editor-select-next ( editor elt -- )
321 '[ _ next-elt ] change-caret ;
323 : editor-next ( editor elt -- )
324 dupd editor-select-next mark>caret ;
326 : editor-select ( from to editor -- )
327 [ mark>> set-model ] [ caret>> set-model ] bi-curry bi* ;
329 : select-elt ( editor elt -- )
330 [ [ [ editor-caret ] [ model>> ] bi ] dip prev/next-elt ] [ drop ] 2bi
333 : start-of-document ( editor -- ) doc-elt editor-prev ;
335 : end-of-document ( editor -- ) doc-elt editor-next ;
337 : position-caret ( editor -- )
338 mouse-elt dup one-char-elt =
339 [ drop dup extend-selection dup mark>> click-loc ]
342 : delete-next-character ( editor -- )
343 char-elt editor-delete ;
345 : delete-previous-character ( editor -- )
346 char-elt editor-backspace ;
348 : delete-previous-word ( editor -- )
349 word-elt editor-delete ;
351 : delete-next-word ( editor -- )
352 word-elt editor-backspace ;
354 : delete-to-start-of-line ( editor -- )
355 one-line-elt editor-delete ;
357 : delete-to-end-of-line ( editor -- )
358 one-line-elt editor-backspace ;
360 : com-undo ( editor -- ) model>> undo ;
362 : com-redo ( editor -- ) model>> redo ;
365 { undo-action com-undo }
366 { redo-action com-redo }
367 { T{ key-down f f "DELETE" } delete-next-character }
368 { T{ key-down f f "BACKSPACE" } delete-previous-character }
369 { T{ key-down f { S+ } "BACKSPACE" } delete-previous-character }
370 { T{ key-down f { C+ } "DELETE" } delete-previous-word }
371 { T{ key-down f { C+ } "BACKSPACE" } delete-next-word }
372 { T{ key-down f { A+ } "DELETE" } delete-to-start-of-line }
373 { T{ key-down f { A+ } "BACKSPACE" } delete-to-end-of-line }
376 : com-paste ( editor -- ) clipboard get paste-clipboard ;
378 : paste-selection ( editor -- ) selection get paste-clipboard ;
380 : com-cut ( editor -- ) clipboard get editor-cut ;
382 editor "clipboard" f {
383 { cut-action com-cut }
384 { copy-action com-copy }
385 { paste-action com-paste }
386 { T{ button-up } com-copy-selection }
387 { T{ button-up f f 2 } paste-selection }
390 : previous-character ( editor -- )
391 dup gadget-selection? [
392 dup selection-start/end drop
393 over set-caret mark>caret
398 : next-character ( editor -- )
399 dup gadget-selection? [
400 dup selection-start/end nip
401 over set-caret mark>caret
406 : previous-word ( editor -- ) word-elt editor-prev ;
408 : next-word ( editor -- ) word-elt editor-next ;
410 : start-of-line ( editor -- ) one-line-elt editor-prev ;
412 : end-of-line ( editor -- ) one-line-elt editor-next ;
414 editor "caret-motion" f {
415 { T{ button-down } position-caret }
416 { T{ key-down f f "LEFT" } previous-character }
417 { T{ key-down f f "RIGHT" } next-character }
418 { T{ key-down f { C+ } "LEFT" } previous-word }
419 { T{ key-down f { C+ } "RIGHT" } next-word }
420 { T{ key-down f f "HOME" } start-of-line }
421 { T{ key-down f f "END" } end-of-line }
422 { T{ key-down f { C+ } "HOME" } start-of-document }
423 { T{ key-down f { C+ } "END" } end-of-document }
426 : clear-editor ( editor -- )
429 : select-all ( editor -- ) doc-elt select-elt ;
431 : select-line ( editor -- ) one-line-elt select-elt ;
433 : select-word ( editor -- ) one-word-elt select-elt ;
435 : selected-token ( editor -- string )
436 dup gadget-selection?
437 [ dup select-word ] unless
440 : select-previous-character ( editor -- )
441 char-elt editor-select-prev ;
443 : select-next-character ( editor -- )
444 char-elt editor-select-next ;
446 : select-previous-word ( editor -- )
447 word-elt editor-select-prev ;
449 : select-next-word ( editor -- )
450 word-elt editor-select-next ;
452 : select-start-of-line ( editor -- )
453 one-line-elt editor-select-prev ;
455 : select-end-of-line ( editor -- )
456 one-line-elt editor-select-next ;
458 : select-start-of-document ( editor -- )
459 doc-elt editor-select-prev ;
461 : select-end-of-document ( editor -- )
462 doc-elt editor-select-next ;
464 editor "selection" f {
465 { T{ button-down f { S+ } 1 } extend-selection }
466 { T{ button-up f { S+ } 1 } com-copy-selection }
467 { T{ drag } drag-selection }
468 { gain-focus focus-editor }
469 { lose-focus unfocus-editor }
470 { delete-action remove-selection }
471 { select-all-action select-all }
472 { T{ key-down f { C+ } "l" } select-line }
473 { T{ key-down f { S+ } "LEFT" } select-previous-character }
474 { T{ key-down f { S+ } "RIGHT" } select-next-character }
475 { T{ key-down f { S+ C+ } "LEFT" } select-previous-word }
476 { T{ key-down f { S+ C+ } "RIGHT" } select-next-word }
477 { T{ key-down f { S+ } "HOME" } select-start-of-line }
478 { T{ key-down f { S+ } "END" } select-end-of-line }
479 { T{ key-down f { S+ C+ } "HOME" } select-start-of-document }
480 { T{ key-down f { S+ C+ } "END" } select-end-of-document }
483 : editor-menu ( editor -- )
491 } show-commands-menu ;
494 { T{ button-down f f 3 } editor-menu }
498 TUPLE: multiline-editor < editor ;
500 : <multiline-editor> ( -- editor )
501 multiline-editor new-editor ;
503 : previous-line ( editor -- ) line-elt editor-prev ;
505 : next-line ( editor -- ) line-elt editor-next ;
509 : page-elt ( editor -- editor element ) dup visible-lines 1 - <page-elt> ;
513 : previous-page ( editor -- ) page-elt editor-prev ;
515 : next-page ( editor -- ) page-elt editor-next ;
517 : select-previous-line ( editor -- ) line-elt editor-select-prev ;
519 : select-next-line ( editor -- ) line-elt editor-select-next ;
521 : select-previous-page ( editor -- ) page-elt editor-select-prev ;
523 : select-next-page ( editor -- ) page-elt editor-select-next ;
525 : insert-newline ( editor -- )
526 "\n" swap user-input* drop ;
528 : change-selection ( editor quot -- )
529 '[ gadget-selection @ ] [ user-input* drop ] bi ; inline
533 : join-lines ( string -- string' )
535 [ rest-slice [ [ blank? ] trim-head-slice ] map! drop ]
536 [ but-last-slice [ [ blank? ] trim-tail-slice ] map! drop ]
540 : last-line? ( document line -- ? )
541 [ last-line# ] dip = ;
543 : prev-line-and-this ( document line -- start end )
545 [ drop 1 - 0 2array ]
546 [ [ drop ] [ doc-line length ] 2bi 2array ]
549 : join-with-prev ( document line -- )
550 [ prev-line-and-this ] [ drop ] 2bi
551 [ join-lines ] change-doc-range ;
553 : this-line-and-next ( document line -- start end )
556 [ [ 1 + ] dip [ drop ] [ doc-line length ] 2bi 2array ]
559 : join-with-next ( document line -- )
560 [ this-line-and-next ] [ drop ] 2bi
561 [ join-lines ] change-doc-range ;
565 : com-join-lines ( editor -- )
566 dup gadget-selection?
567 [ [ join-lines ] change-selection ] [
568 [ model>> ] [ editor-caret first ] bi {
569 { [ over last-line# 0 = ] [ 2drop ] }
570 { [ 2dup last-line? ] [ join-with-prev ] }
575 multiline-editor "multiline" f {
576 { T{ key-down f f "UP" } previous-line }
577 { T{ key-down f f "DOWN" } next-line }
578 { T{ key-down f { S+ } "UP" } select-previous-line }
579 { T{ key-down f { S+ } "DOWN" } select-next-line }
580 { T{ key-down f f "PAGE_UP" } previous-page }
581 { T{ key-down f f "PAGE_DOWN" } next-page }
582 { T{ key-down f { S+ } "PAGE_UP" } select-previous-page }
583 { T{ key-down f { S+ } "PAGE_DOWN" } select-next-page }
584 { T{ key-down f f "RET" } insert-newline }
585 { T{ key-down f { S+ } "RET" } insert-newline }
586 { T{ key-down f f "ENTER" } insert-newline }
587 { T{ key-down f { C+ } "j" } com-join-lines }
590 TUPLE: source-editor < multiline-editor ;
592 : <source-editor> ( -- editor )
593 source-editor new-editor ;
596 : <element-model> ( editor element -- model )
597 [ [ caret>> ] [ model>> ] bi ] dip
598 '[ _ _ elt-string ] <arrow> ;
600 ! Fields wrap an editor
601 TUPLE: field < border editor min-cols max-cols ;
605 : field-theme ( gadget -- gadget )
608 COLOR: gray <solid> >>boundary ; inline
610 : <field-border> ( gadget -- border )
617 : new-field ( class -- gadget )
618 [ <editor> ] dip new-border
619 dup gadget-child >>editor
622 ! For line-gadget-width
623 M: field font>> editor>> font>> ;
627 [ editor>> pref-dim ]
628 [ [ line-gadget-width ] [ drop second ] 2bi 2array ]
629 tri border-pref-dim ;
631 TUPLE: model-field < field field-model ;
633 : <model-field> ( model -- gadget )
634 model-field new-field
637 M: model-field graft*
638 [ [ field-model>> value>> ] [ editor>> ] bi set-editor-string ]
639 [ dup editor>> model>> add-connection ]
642 M: model-field ungraft*
643 dup editor>> model>> remove-connection ;
645 M: model-field model-changed
646 nip [ editor>> editor-string ] [ field-model>> ] bi set-model ;
648 TUPLE: action-field < field quot ;
650 : <action-field> ( quot -- gadget )
651 action-field new-field
654 : invoke-action-field ( field -- )
655 [ editor>> editor-string ]
656 [ editor>> clear-editor ]
658 tri call( string -- ) ;
661 { T{ key-down f f "RET" } [ invoke-action-field ] }