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 ;
20 : <loc> ( -- loc ) { 0 0 } <model> ;
22 : init-editor-locs ( editor -- editor )
26 : editor-theme ( editor -- editor )
27 COLOR: red >>caret-color
28 monospace-font >>font ; inline
30 : new-editor ( class -- editor )
36 : <editor> ( -- editor )
39 : activate-editor-model ( editor model -- )
41 [ nip activate-model ]
42 [ swap model>> add-loc ] 2tri ;
44 : deactivate-editor-model ( editor model -- )
46 [ nip deactivate-model ]
47 [ swap model>> remove-loc ] 2tri ;
49 : blink-caret ( editor -- )
50 [ not ] change-blink relayout-1 ;
52 SYMBOL: blink-interval
54 750 milliseconds blink-interval set-global
56 : stop-blinking ( editor -- )
57 [ [ cancel-alarm ] when* f ] change-blink-alarm drop ;
59 : start-blinking ( editor -- )
62 dup '[ _ blink-caret ] blink-interval get every
66 : restart-blinking ( editor -- )
74 [ dup caret>> activate-editor-model ]
75 [ dup mark>> activate-editor-model ] bi ;
79 [ dup caret>> deactivate-editor-model ]
80 [ dup mark>> deactivate-editor-model ] tri ;
82 : editor-caret ( editor -- loc ) caret>> value>> ;
84 : editor-mark ( editor -- loc ) mark>> value>> ;
86 : set-caret ( loc editor -- )
87 [ model>> validate-loc ] [ caret>> ] bi set-model ;
89 : change-caret ( editor quot -- )
90 [ [ [ editor-caret ] [ model>> ] bi ] dip call ] [ drop ] 2bi
93 : mark>caret ( editor -- )
94 [ editor-caret ] [ mark>> ] bi set-model ;
96 : change-caret&mark ( editor quot -- )
97 [ change-caret ] [ drop mark>caret ] 2bi ; inline
99 : editor-line ( n editor -- str ) control-value nth ;
101 :: point>loc ( point editor -- loc )
102 point second editor y>line {
103 { [ dup 0 < ] [ drop { 0 0 } ] }
104 { [ dup editor model>> last-line# > ] [ drop editor model>> doc-end ] }
114 : clicked-loc ( editor -- loc )
115 [ hand-rel ] keep point>loc ;
117 : click-loc ( editor model -- )
118 [ clicked-loc ] dip set-model ;
120 : focus-editor ( editor -- )
121 [ start-blinking ] [ t >>focused? relayout-1 ] bi ;
123 : unfocus-editor ( editor -- )
124 [ stop-blinking ] [ f >>focused? relayout-1 ] bi ;
126 : loc>x ( loc editor -- x )
127 [ first2 swap ] dip [ editor-line ] [ font>> ] bi swap offset>x round ;
129 : loc>point ( loc editor -- loc )
130 [ loc>x ] [ [ first ] dip line>y ceiling ] 2bi 2array ;
132 : caret-loc ( editor -- loc )
133 [ editor-caret ] keep loc>point ;
135 : caret-dim ( editor -- dim )
136 [ 0 ] dip line-height 2array ;
138 : scroll>caret ( editor -- )
139 dup graft-state>> second [
141 [ caret-loc ] [ caret-dim { 2 1 } v+ ] bi <rect>
145 : draw-caret? ( editor -- ? )
146 { [ focused?>> ] [ blink>> ] } 1&& ;
148 : draw-caret ( editor -- )
150 [ caret-color>> gl-color ]
152 [ caret-loc ] [ caret-dim ] bi
157 : selection-start/end ( editor -- start end )
158 [ editor-mark ] [ editor-caret ] bi sort-pair ;
160 SYMBOL: selected-lines
162 TUPLE: selected-line start end first? last? ;
164 : compute-selection ( editor -- assoc )
165 dup gadget-selection? [
166 [ selection-start/end [ [ first ] bi@ [a,b] ] [ ] 2bi ]
168 '[ [ _ _ ] [ _ start/end-on-line ] bi 2array ] H{ } map>assoc
171 :: draw-selection ( line pair editor -- )
172 pair [ editor font>> line offset>x ] map :> pair
173 editor selection-color>> gl-color
175 pair second pair first - round 1 max editor line-height 2array
178 : draw-unselected-line ( line editor -- )
179 font>> swap draw-text ;
181 : draw-selected-line ( line pair editor -- )
183 [ nip draw-unselected-line ] [ draw-selection ] 3bi
187 [ [ first2 ] [ selection-color>> ] bi* <selection> ]
188 [ draw-unselected-line ] bi
192 M: editor draw-line ( line index editor -- )
193 [ selected-lines get at ] dip over
194 [ draw-selected-line ] [ nip draw-unselected-line ] if ;
196 M: editor draw-gadget*
197 dup compute-selection selected-lines [
198 [ draw-lines ] [ draw-caret ] bi
202 ! Add some space for the caret.
203 [ font>> ] [ control-value ] bi text-dim { 1 0 } v+ ;
205 M: editor baseline font>> font-metrics ascent>> ;
207 M: editor cap-height font>> font-metrics cap-height>> ;
209 : contents-changed ( model editor -- )
210 [ [ nip caret>> ] [ drop ] 2bi '[ _ validate-loc ] (change-model) ]
211 [ [ nip mark>> ] [ drop ] 2bi '[ _ validate-loc ] (change-model) ]
212 [ nip relayout ] 2tri ;
214 : caret/mark-changed ( editor -- )
215 [ restart-blinking ] keep scroll>caret ;
217 M: editor model-changed
219 { [ 2dup model>> eq? ] [ contents-changed ] }
220 { [ 2dup caret>> eq? ] [ nip caret/mark-changed ] }
221 { [ 2dup mark>> eq? ] [ nip caret/mark-changed ] }
224 M: editor gadget-selection?
225 selection-start/end = not ;
227 M: editor gadget-selection
228 [ selection-start/end ] [ model>> ] bi doc-range ;
230 : remove-selection ( editor -- )
231 [ selection-start/end ] [ model>> ] bi remove-doc-range ;
233 M: editor user-input*
234 [ selection-start/end ] [ model>> ] bi set-doc-range t ;
236 : editor-string ( editor -- string )
239 : set-editor-string ( string editor -- )
240 model>> set-doc-string ;
242 M: editor gadget-text* editor-string % ;
244 : extend-selection ( editor -- )
247 [ dup caret>> click-loc ] tri ;
249 : mouse-elt ( -- element )
253 } at one-line-elt or ;
255 : drag-direction? ( loc editor -- ? )
256 editor-mark before? ;
258 : drag-selection-caret ( loc editor element -- loc )
260 [ drag-direction? ] [ model>> ] 2bi
261 ] dip prev/next-elt ? ;
263 : drag-selection-mark ( loc editor element -- loc )
265 [ drag-direction? not ]
268 ] dip prev/next-elt ? ;
270 : drag-caret&mark ( editor -- caret mark )
271 [ clicked-loc ] [ mouse-elt ] bi
272 [ drag-selection-caret ]
273 [ drag-selection-mark ] 3bi ;
275 : drag-selection ( editor -- )
278 [ caret>> set-model ] tri ;
280 : editor-cut ( editor clipboard -- )
281 [ gadget-copy ] [ drop remove-selection ] 2bi ;
283 : delete/backspace ( editor quot -- )
284 over gadget-selection? [
285 drop remove-selection
287 [ [ [ editor-caret ] [ model>> ] bi ] dip call ]
292 : editor-delete ( editor elt -- )
293 '[ dupd _ next-elt ] delete/backspace ;
295 : editor-backspace ( editor elt -- )
296 '[ over [ _ prev-elt ] dip ] delete/backspace ;
298 : editor-select-prev ( editor elt -- )
299 '[ _ prev-elt ] change-caret ;
301 : editor-prev ( editor elt -- )
302 [ editor-select-prev ] [ drop mark>caret ] 2bi ;
304 : editor-select-next ( editor elt -- )
305 '[ _ next-elt ] change-caret ;
307 : editor-next ( editor elt -- )
308 dupd editor-select-next mark>caret ;
310 : editor-select ( from to editor -- )
311 [ mark>> set-model ] [ caret>> set-model ] bi-curry bi* ;
313 : select-elt ( editor elt -- )
314 [ [ [ editor-caret ] [ model>> ] bi ] dip prev/next-elt ] [ drop ] 2bi
317 : start-of-document ( editor -- ) doc-elt editor-prev ;
319 : end-of-document ( editor -- ) doc-elt editor-next ;
321 : position-caret ( editor -- )
322 mouse-elt dup one-char-elt =
323 [ drop dup extend-selection dup mark>> click-loc ]
326 : delete-next-character ( editor -- )
327 char-elt editor-delete ;
329 : delete-previous-character ( editor -- )
330 char-elt editor-backspace ;
332 : delete-previous-word ( editor -- )
333 word-elt editor-delete ;
335 : delete-next-word ( editor -- )
336 word-elt editor-backspace ;
338 : delete-to-start-of-line ( editor -- )
339 one-line-elt editor-delete ;
341 : delete-to-end-of-line ( editor -- )
342 one-line-elt editor-backspace ;
344 : com-undo ( editor -- ) model>> undo ;
346 : com-redo ( editor -- ) model>> redo ;
349 { undo-action com-undo }
350 { redo-action com-redo }
351 { T{ key-down f f "DELETE" } delete-next-character }
352 { T{ key-down f { S+ } "DELETE" } delete-next-character }
353 { T{ key-down f f "BACKSPACE" } delete-previous-character }
354 { T{ key-down f { S+ } "BACKSPACE" } delete-previous-character }
355 { T{ key-down f { C+ } "DELETE" } delete-previous-word }
356 { T{ key-down f { C+ } "BACKSPACE" } delete-next-word }
357 { T{ key-down f { A+ } "DELETE" } delete-to-start-of-line }
358 { T{ key-down f { A+ } "BACKSPACE" } delete-to-end-of-line }
361 : com-paste ( editor -- ) clipboard get paste-clipboard ;
363 : paste-selection ( editor -- ) selection get paste-clipboard ;
365 : com-cut ( editor -- ) clipboard get editor-cut ;
367 editor "clipboard" f {
368 { cut-action com-cut }
369 { copy-action com-copy }
370 { paste-action com-paste }
371 { T{ button-up } com-copy-selection }
372 { T{ button-up f f 2 } paste-selection }
375 : previous-character ( editor -- )
376 dup gadget-selection? [
377 dup selection-start/end drop
378 over set-caret mark>caret
383 : next-character ( editor -- )
384 dup gadget-selection? [
385 dup selection-start/end nip
386 over set-caret mark>caret
391 : previous-word ( editor -- ) word-elt editor-prev ;
393 : next-word ( editor -- ) word-elt editor-next ;
395 : start-of-line ( editor -- ) one-line-elt editor-prev ;
397 : end-of-line ( editor -- ) one-line-elt editor-next ;
399 editor "caret-motion" f {
400 { T{ button-down } position-caret }
401 { T{ key-down f f "LEFT" } previous-character }
402 { T{ key-down f f "RIGHT" } next-character }
403 { T{ key-down f { C+ } "LEFT" } previous-word }
404 { T{ key-down f { C+ } "RIGHT" } next-word }
405 { T{ key-down f f "HOME" } start-of-line }
406 { T{ key-down f f "END" } end-of-line }
407 { T{ key-down f { C+ } "HOME" } start-of-document }
408 { T{ key-down f { C+ } "END" } end-of-document }
411 : clear-editor ( editor -- )
414 : select-all ( editor -- ) doc-elt select-elt ;
416 : select-line ( editor -- ) one-line-elt select-elt ;
418 : select-word ( editor -- ) one-word-elt select-elt ;
420 : selected-token ( editor -- string )
421 dup gadget-selection?
422 [ dup select-word ] unless
425 : select-previous-character ( editor -- )
426 char-elt editor-select-prev ;
428 : select-next-character ( editor -- )
429 char-elt editor-select-next ;
431 : select-previous-word ( editor -- )
432 word-elt editor-select-prev ;
434 : select-next-word ( editor -- )
435 word-elt editor-select-next ;
437 : select-start-of-line ( editor -- )
438 one-line-elt editor-select-prev ;
440 : select-end-of-line ( editor -- )
441 one-line-elt editor-select-next ;
443 : select-start-of-document ( editor -- )
444 doc-elt editor-select-prev ;
446 : select-end-of-document ( editor -- )
447 doc-elt editor-select-next ;
449 editor "selection" f {
450 { T{ button-down f { S+ } 1 } extend-selection }
451 { T{ button-up f { S+ } 1 } com-copy-selection }
452 { T{ drag } drag-selection }
453 { gain-focus focus-editor }
454 { lose-focus unfocus-editor }
455 { delete-action remove-selection }
456 { select-all-action select-all }
457 { T{ key-down f { C+ } "l" } select-line }
458 { T{ key-down f { S+ } "LEFT" } select-previous-character }
459 { T{ key-down f { S+ } "RIGHT" } select-next-character }
460 { T{ key-down f { S+ C+ } "LEFT" } select-previous-word }
461 { T{ key-down f { S+ C+ } "RIGHT" } select-next-word }
462 { T{ key-down f { S+ } "HOME" } select-start-of-line }
463 { T{ key-down f { S+ } "END" } select-end-of-line }
464 { T{ key-down f { S+ C+ } "HOME" } select-start-of-document }
465 { T{ key-down f { S+ C+ } "END" } select-end-of-document }
468 : editor-menu ( editor -- )
476 } show-commands-menu ;
479 { T{ button-down f f 3 } editor-menu }
483 TUPLE: multiline-editor < editor ;
485 : <multiline-editor> ( -- editor )
486 multiline-editor new-editor ;
488 : previous-line ( editor -- ) line-elt editor-prev ;
490 : next-line ( editor -- ) line-elt editor-next ;
494 : page-elt ( editor -- editor element ) dup visible-lines 1 - <page-elt> ;
498 : previous-page ( editor -- ) page-elt editor-prev ;
500 : next-page ( editor -- ) page-elt editor-next ;
502 : select-previous-line ( editor -- ) line-elt editor-select-prev ;
504 : select-next-line ( editor -- ) line-elt editor-select-next ;
506 : select-previous-page ( editor -- ) page-elt editor-select-prev ;
508 : select-next-page ( editor -- ) page-elt editor-select-next ;
510 : insert-newline ( editor -- )
511 "\n" swap user-input* drop ;
513 : change-selection ( editor quot -- )
514 '[ gadget-selection @ ] [ user-input* drop ] bi ; inline
516 : join-lines ( string -- string' )
518 [ rest-slice [ [ blank? ] trim-head-slice ] change-each ]
519 [ but-last-slice [ [ blank? ] trim-tail-slice ] change-each ]
523 : this-line-and-next ( document line -- start end )
524 [ nip 0 swap 2array ]
525 [ 1 + [ nip ] [ swap doc-line length ] 2bi 2array ]
528 : last-line? ( document line -- ? )
529 [ last-line# ] dip = ;
531 : com-join-lines ( editor -- )
532 dup gadget-selection?
533 [ [ join-lines ] change-selection ] [
534 [ model>> ] [ editor-caret first ] bi
535 2dup last-line? [ 2drop ] [
536 [ this-line-and-next ] [ drop ] 2bi
537 [ join-lines ] change-doc-range
541 multiline-editor "multiline" f {
542 { T{ key-down f f "UP" } previous-line }
543 { T{ key-down f f "DOWN" } next-line }
544 { T{ key-down f { S+ } "UP" } select-previous-line }
545 { T{ key-down f { S+ } "DOWN" } select-next-line }
546 { T{ key-down f f "PAGE_UP" } previous-page }
547 { T{ key-down f f "PAGE_DOWN" } next-page }
548 { T{ key-down f { S+ } "PAGE_UP" } select-previous-page }
549 { T{ key-down f { S+ } "PAGE_DOWN" } select-next-page }
550 { T{ key-down f f "RET" } insert-newline }
551 { T{ key-down f { S+ } "RET" } insert-newline }
552 { T{ key-down f f "ENTER" } insert-newline }
553 { T{ key-down f { C+ } "j" } com-join-lines }
556 TUPLE: source-editor < multiline-editor ;
558 : <source-editor> ( -- editor )
559 source-editor new-editor ;
562 : <element-model> ( editor element -- model )
563 [ [ caret>> ] [ model>> ] bi ] dip
564 '[ _ _ elt-string ] <arrow> ;
566 ! Fields wrap an editor
567 TUPLE: field < border editor min-cols max-cols ;
569 : field-theme ( gadget -- gadget )
572 COLOR: gray <solid> >>boundary ; inline
574 : <field-border> ( gadget -- border )
579 : new-field ( class -- gadget )
580 [ <editor> ] dip new-border
581 dup gadget-child >>editor
584 ! For line-gadget-width
585 M: field font>> editor>> font>> ;
589 [ editor>> pref-dim ]
590 [ [ line-gadget-width ] [ drop second ] 2bi 2array ]
591 tri border-pref-dim ;
593 TUPLE: model-field < field field-model ;
595 : <model-field> ( model -- gadget )
596 model-field new-field
599 M: model-field graft*
600 [ [ field-model>> value>> ] [ editor>> ] bi set-editor-string ]
601 [ dup editor>> model>> add-connection ]
604 M: model-field ungraft*
605 dup editor>> model>> remove-connection ;
607 M: model-field model-changed
608 nip [ editor>> editor-string ] [ field-model>> ] bi set-model ;
610 TUPLE: action-field < field quot ;
612 : <action-field> ( quot -- gadget )
613 action-field new-field
616 : invoke-action-field ( field -- )
617 [ editor>> editor-string ]
618 [ editor>> clear-editor ]
620 tri call( string -- ) ;
623 { T{ key-down f f "RET" } [ invoke-action-field ] }