1 ! Copyright (C) 2006, 2009 Slava Pestov
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: accessors arrays documents documents.elements kernel math
4 math.ranges models models.arrow namespaces locals fry make opengl
5 opengl.gl sequences strings math.vectors math.functions sorting colors
6 colors.constants combinators assocs math.order calendar alarms
7 continuations ui.clipboards ui.commands ui.gadgets ui.gadgets.borders
8 ui.gadgets.buttons ui.gadgets.labels ui.gadgets.scrollers
9 ui.gadgets.menus ui.gadgets.wrappers ui.render ui.pens.solid
10 ui.gadgets.line-support ui.text ui.gestures ui.baseline-alignment
11 math.rectangles splitting unicode.categories grouping ;
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 -- )
42 swap model>> add-loc ;
44 : deactivate-editor-model ( editor model -- )
45 2dup remove-connection
47 swap model>> remove-loc ;
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 -- )
75 dup caret>> activate-editor-model
76 dup mark>> activate-editor-model ;
81 dup caret>> deactivate-editor-model
82 dup mark>> deactivate-editor-model ;
84 : editor-caret ( editor -- loc ) caret>> value>> ;
86 : editor-mark ( editor -- loc ) mark>> value>> ;
88 : set-caret ( loc editor -- )
89 [ model>> validate-loc ] keep
92 : change-caret ( editor quot -- )
93 [ [ [ editor-caret ] [ model>> ] bi ] dip call ] [ drop ] 2bi
96 : mark>caret ( editor -- )
97 [ editor-caret ] [ mark>> ] bi set-model ;
99 : change-caret&mark ( editor quot -- )
100 [ change-caret ] [ drop mark>caret ] 2bi ; inline
102 : editor-line ( n editor -- str ) control-value nth ;
104 :: point>loc ( point editor -- loc )
105 point second editor y>line {
106 { [ dup 0 < ] [ drop { 0 0 } ] }
107 { [ dup editor model>> last-line# > ] [ drop editor model>> doc-end ] }
117 : clicked-loc ( editor -- loc )
118 [ hand-rel ] keep point>loc ;
120 : click-loc ( editor model -- )
121 [ clicked-loc ] dip set-model ;
123 : focus-editor ( editor -- )
124 [ start-blinking ] [ t >>focused? relayout-1 ] bi ;
126 : unfocus-editor ( editor -- )
127 [ stop-blinking ] [ f >>focused? relayout-1 ] bi ;
129 : loc>x ( loc editor -- x )
130 [ first2 swap ] dip [ editor-line ] [ font>> ] bi swap offset>x round ;
132 : loc>point ( loc editor -- loc )
133 [ loc>x ] [ [ first ] dip line>y ceiling ] 2bi 2array ;
135 : caret-loc ( editor -- loc )
136 [ editor-caret ] keep loc>point ;
138 : caret-dim ( editor -- dim )
139 line-height 0 swap 2array ;
141 : scroll>caret ( editor -- )
142 dup graft-state>> second [
144 [ caret-loc ] [ caret-dim { 2 1 } v+ ] bi <rect>
148 : draw-caret? ( editor -- ? )
149 [ focused?>> ] [ blink>> ] bi and ;
151 : draw-caret ( editor -- )
153 [ caret-color>> gl-color ]
155 [ caret-loc ] [ caret-dim ] bi
160 : selection-start/end ( editor -- start end )
161 [ editor-mark ] [ editor-caret ] bi sort-pair ;
163 SYMBOL: selected-lines
165 TUPLE: selected-line start end first? last? ;
167 : compute-selection ( editor -- assoc )
168 dup gadget-selection? [
169 [ selection-start/end [ [ first ] bi@ [a,b] ] 2keep ] keep model>>
170 '[ [ _ _ ] keep _ start/end-on-line 2array ] H{ } map>assoc
173 :: draw-selection ( line pair editor -- )
174 pair [ editor font>> line offset>x ] map :> pair
175 editor selection-color>> gl-color
177 pair second pair first - round 1 max editor line-height 2array
180 : draw-unselected-line ( line editor -- )
181 font>> swap draw-text ;
183 : draw-selected-line ( line pair editor -- )
185 [ nip draw-unselected-line ] [ draw-selection ] 3bi
189 [ [ first2 ] [ selection-color>> ] bi* <selection> ] keep
194 M: editor draw-line ( line index editor -- )
195 [ selected-lines get at ] dip over
196 [ draw-selected-line ] [ nip draw-unselected-line ] if ;
198 M: editor draw-gadget*
199 dup compute-selection selected-lines [
200 [ draw-lines ] [ draw-caret ] bi
204 ! Add some space for the caret.
205 [ font>> ] [ control-value ] bi text-dim { 1 0 } v+ ;
207 M: editor baseline font>> font-metrics ascent>> ;
209 M: editor cap-height font>> font-metrics cap-height>> ;
211 : contents-changed ( model editor -- )
213 over caret>> [ over validate-loc ] (change-model)
214 over mark>> [ over validate-loc ] (change-model)
217 : caret/mark-changed ( model editor -- )
218 nip [ restart-blinking ] [ scroll>caret ] bi ;
220 M: editor model-changed
222 { [ 2dup model>> eq? ] [ contents-changed ] }
223 { [ 2dup caret>> eq? ] [ caret/mark-changed ] }
224 { [ 2dup mark>> eq? ] [ caret/mark-changed ] }
227 M: editor gadget-selection?
228 selection-start/end = not ;
230 M: editor gadget-selection
231 [ selection-start/end ] keep model>> doc-range ;
233 : remove-selection ( editor -- )
234 [ selection-start/end ] keep model>> remove-doc-range ;
236 M: editor user-input*
237 [ selection-start/end ] keep model>> set-doc-range t ;
239 : editor-string ( editor -- string )
242 : set-editor-string ( string editor -- )
243 model>> set-doc-string ;
245 M: editor gadget-text* editor-string % ;
247 : extend-selection ( editor -- )
250 dup caret>> click-loc ;
252 : mouse-elt ( -- element )
256 } at one-line-elt or ;
258 : drag-direction? ( loc editor -- ? )
259 editor-mark before? ;
261 : drag-selection-caret ( loc editor element -- loc )
263 [ drag-direction? ] 2keep model>>
264 ] dip prev/next-elt ? ;
266 : drag-selection-mark ( loc editor element -- loc )
268 [ drag-direction? not ] keep
269 [ editor-mark ] [ model>> ] bi
270 ] dip prev/next-elt ? ;
272 : drag-caret&mark ( editor -- caret mark )
273 dup clicked-loc swap mouse-elt
274 [ drag-selection-caret ] 3keep
275 drag-selection-mark ;
277 : drag-selection ( editor -- )
279 pick mark>> set-model
280 swap caret>> set-model ;
282 : editor-cut ( editor clipboard -- )
283 [ gadget-copy ] [ drop remove-selection ] 2bi ;
285 : delete/backspace ( editor quot -- )
286 over gadget-selection? [
287 drop remove-selection
289 [ [ [ editor-caret ] [ model>> ] bi ] dip call ]
294 : editor-delete ( editor elt -- )
295 '[ dupd _ next-elt ] delete/backspace ;
297 : editor-backspace ( editor elt -- )
298 '[ over [ _ prev-elt ] dip ] delete/backspace ;
300 : editor-select-prev ( editor elt -- )
301 '[ _ prev-elt ] change-caret ;
303 : editor-prev ( editor elt -- )
304 [ editor-select-prev ] [ drop mark>caret ] 2bi ;
306 : editor-select-next ( editor elt -- )
307 '[ _ next-elt ] change-caret ;
309 : editor-next ( editor elt -- )
310 dupd editor-select-next mark>caret ;
312 : editor-select ( from to editor -- )
313 [ mark>> set-model ] [ caret>> set-model ] bi-curry bi* ;
315 : select-elt ( editor elt -- )
316 [ [ [ editor-caret ] [ model>> ] bi ] dip prev/next-elt ] [ drop ] 2bi
319 : start-of-document ( editor -- ) doc-elt editor-prev ;
321 : end-of-document ( editor -- ) doc-elt editor-next ;
323 : position-caret ( editor -- )
324 mouse-elt dup one-char-elt =
325 [ drop dup extend-selection dup mark>> click-loc ]
328 : delete-next-character ( editor -- )
329 char-elt editor-delete ;
331 : delete-previous-character ( editor -- )
332 char-elt editor-backspace ;
334 : delete-previous-word ( editor -- )
335 word-elt editor-delete ;
337 : delete-next-word ( editor -- )
338 word-elt editor-backspace ;
340 : delete-to-start-of-line ( editor -- )
341 one-line-elt editor-delete ;
343 : delete-to-end-of-line ( editor -- )
344 one-line-elt editor-backspace ;
346 : com-undo ( editor -- )
349 : com-redo ( editor -- )
353 { undo-action com-undo }
354 { redo-action com-redo }
355 { T{ key-down f f "DELETE" } delete-next-character }
356 { T{ key-down f { S+ } "DELETE" } delete-next-character }
357 { T{ key-down f f "BACKSPACE" } delete-previous-character }
358 { T{ key-down f { S+ } "BACKSPACE" } delete-previous-character }
359 { T{ key-down f { C+ } "DELETE" } delete-previous-word }
360 { T{ key-down f { C+ } "BACKSPACE" } delete-next-word }
361 { T{ key-down f { A+ } "DELETE" } delete-to-start-of-line }
362 { T{ key-down f { A+ } "BACKSPACE" } delete-to-end-of-line }
365 : com-paste ( editor -- ) clipboard get paste-clipboard ;
367 : paste-selection ( editor -- ) selection get paste-clipboard ;
369 : com-cut ( editor -- ) clipboard get editor-cut ;
371 editor "clipboard" f {
372 { cut-action com-cut }
373 { copy-action com-copy }
374 { paste-action com-paste }
375 { T{ button-up } com-copy-selection }
376 { T{ button-up f f 2 } paste-selection }
379 : previous-character ( editor -- )
380 dup gadget-selection? [
381 dup selection-start/end drop
382 over set-caret mark>caret
387 : next-character ( editor -- )
388 dup gadget-selection? [
389 dup selection-start/end nip
390 over set-caret mark>caret
395 : previous-word ( editor -- ) word-elt editor-prev ;
397 : next-word ( editor -- ) word-elt editor-next ;
399 : start-of-line ( editor -- ) one-line-elt editor-prev ;
401 : end-of-line ( editor -- ) one-line-elt editor-next ;
403 editor "caret-motion" f {
404 { T{ button-down } position-caret }
405 { T{ key-down f f "LEFT" } previous-character }
406 { T{ key-down f f "RIGHT" } next-character }
407 { T{ key-down f { C+ } "LEFT" } previous-word }
408 { T{ key-down f { C+ } "RIGHT" } next-word }
409 { T{ key-down f f "HOME" } start-of-line }
410 { T{ key-down f f "END" } end-of-line }
411 { T{ key-down f { C+ } "HOME" } start-of-document }
412 { T{ key-down f { C+ } "END" } end-of-document }
415 : clear-editor ( editor -- )
418 : select-all ( editor -- ) doc-elt select-elt ;
420 : select-line ( editor -- ) one-line-elt select-elt ;
422 : select-word ( editor -- ) one-word-elt select-elt ;
424 : selected-token ( editor -- string )
425 dup gadget-selection?
426 [ dup select-word ] unless
429 : select-previous-character ( editor -- )
430 char-elt editor-select-prev ;
432 : select-next-character ( editor -- )
433 char-elt editor-select-next ;
435 : select-previous-word ( editor -- )
436 word-elt editor-select-prev ;
438 : select-next-word ( editor -- )
439 word-elt editor-select-next ;
441 : select-start-of-line ( editor -- )
442 one-line-elt editor-select-prev ;
444 : select-end-of-line ( editor -- )
445 one-line-elt editor-select-next ;
447 : select-start-of-document ( editor -- )
448 doc-elt editor-select-prev ;
450 : select-end-of-document ( editor -- )
451 doc-elt editor-select-next ;
453 editor "selection" f {
454 { T{ button-down f { S+ } 1 } extend-selection }
455 { T{ button-up f { S+ } 1 } com-copy-selection }
456 { T{ drag } drag-selection }
457 { gain-focus focus-editor }
458 { lose-focus unfocus-editor }
459 { delete-action remove-selection }
460 { select-all-action select-all }
461 { T{ key-down f { C+ } "l" } select-line }
462 { T{ key-down f { S+ } "LEFT" } select-previous-character }
463 { T{ key-down f { S+ } "RIGHT" } select-next-character }
464 { T{ key-down f { S+ C+ } "LEFT" } select-previous-word }
465 { T{ key-down f { S+ C+ } "RIGHT" } select-next-word }
466 { T{ key-down f { S+ } "HOME" } select-start-of-line }
467 { T{ key-down f { S+ } "END" } select-end-of-line }
468 { T{ key-down f { S+ C+ } "HOME" } select-start-of-document }
469 { T{ key-down f { S+ C+ } "END" } select-end-of-document }
472 : editor-menu ( editor -- )
480 } show-commands-menu ;
483 { T{ button-down f f 3 } editor-menu }
487 TUPLE: multiline-editor < editor ;
489 : <multiline-editor> ( -- editor )
490 multiline-editor new-editor ;
492 : previous-line ( editor -- ) line-elt editor-prev ;
494 : next-line ( editor -- ) line-elt editor-next ;
498 : page-elt ( editor -- editor element ) dup visible-lines 1- <page-elt> ;
502 : previous-page ( editor -- ) page-elt editor-prev ;
504 : next-page ( editor -- ) page-elt editor-next ;
506 : select-previous-line ( editor -- ) line-elt editor-select-prev ;
508 : select-next-line ( editor -- ) line-elt editor-select-next ;
510 : select-previous-page ( editor -- ) page-elt editor-select-prev ;
512 : select-next-page ( editor -- ) page-elt editor-select-next ;
514 : insert-newline ( editor -- )
515 "\n" swap user-input* drop ;
517 : change-selection ( editor quot -- )
518 '[ gadget-selection @ ] keep user-input* drop ; inline
520 : join-lines ( string -- string' )
522 [ rest-slice [ [ blank? ] trim-head-slice ] change-each ]
523 [ but-last-slice [ [ blank? ] trim-tail-slice ] change-each ]
527 : this-line-and-next ( document line -- start end )
528 [ nip 0 swap 2array ]
529 [ [ nip 1+ ] [ 1+ swap doc-line length ] 2bi 2array ]
532 : last-line? ( document line -- ? )
533 [ last-line# ] dip = ;
535 : com-join-lines ( editor -- )
536 dup gadget-selection?
537 [ [ join-lines ] change-selection ] [
538 [ model>> ] [ editor-caret first ] bi
539 2dup last-line? [ 2drop ] [
540 [ this-line-and-next ] [ drop ] 2bi
541 [ join-lines ] change-doc-range
545 multiline-editor "multiline" f {
546 { T{ key-down f f "UP" } previous-line }
547 { T{ key-down f f "DOWN" } next-line }
548 { T{ key-down f { S+ } "UP" } select-previous-line }
549 { T{ key-down f { S+ } "DOWN" } select-next-line }
550 { T{ key-down f f "PAGE_UP" } previous-page }
551 { T{ key-down f f "PAGE_DOWN" } next-page }
552 { T{ key-down f { S+ } "PAGE_UP" } select-previous-page }
553 { T{ key-down f { S+ } "PAGE_DOWN" } select-next-page }
554 { T{ key-down f f "RET" } insert-newline }
555 { T{ key-down f { S+ } "RET" } insert-newline }
556 { T{ key-down f f "ENTER" } insert-newline }
557 { T{ key-down f { C+ } "j" } com-join-lines }
560 TUPLE: source-editor < multiline-editor ;
562 : <source-editor> ( -- editor )
563 source-editor new-editor ;
566 : <element-model> ( editor element -- model )
567 [ [ caret>> ] [ model>> ] bi ] dip
568 '[ _ _ elt-string ] <arrow> ;
570 ! Fields wrap an editor
571 TUPLE: field < border editor min-cols max-cols ;
573 : field-theme ( gadget -- gadget )
576 COLOR: gray <solid> >>boundary ; inline
578 : <field-border> ( gadget -- border )
583 : new-field ( class -- gadget )
584 [ <editor> ] dip new-border
585 dup gadget-child >>editor
588 ! For line-gadget-width
589 M: field font>> editor>> font>> ;
593 [ editor>> pref-dim ] keep
594 [ line-gadget-width ] [ drop second ] 2bi 2array
597 TUPLE: model-field < field field-model ;
599 : <model-field> ( model -- gadget )
600 model-field new-field swap >>field-model ;
602 M: model-field graft*
603 [ [ field-model>> value>> ] [ editor>> ] bi set-editor-string ]
604 [ dup editor>> model>> add-connection ]
607 M: model-field ungraft*
608 dup editor>> model>> remove-connection ;
610 M: model-field model-changed
611 nip [ editor>> editor-string ] [ field-model>> ] bi set-model ;
613 TUPLE: action-field < field quot ;
615 : <action-field> ( quot -- gadget )
616 action-field new-field swap >>quot ;
618 : invoke-action-field ( field -- )
619 [ editor>> editor-string ]
620 [ editor>> clear-editor ]
622 tri call( string -- ) ;
625 { T{ key-down f f "RET" } [ invoke-action-field ] }