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.filter namespaces locals fry make opengl
5 opengl.gl sequences strings math.vectors math.functions sorting colors
6 colors.constants combinators assocs math.order fry 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 fonts grouping ;
12 IN: ui.gadgets.editors
14 TUPLE: editor < line-gadget
17 focused? blink blink-alarm ;
19 : <loc> ( -- loc ) { 0 0 } <model> ;
21 : init-editor-locs ( editor -- editor )
25 : editor-theme ( editor -- editor )
26 COLOR: red >>caret-color
27 monospace-font >>font ; inline
29 : new-editor ( class -- editor )
35 : <editor> ( -- editor )
38 : activate-editor-model ( editor model -- )
41 swap model>> add-loc ;
43 : deactivate-editor-model ( editor model -- )
44 2dup remove-connection
46 swap model>> remove-loc ;
48 : blink-caret ( editor -- )
49 [ not ] change-blink relayout-1 ;
51 SYMBOL: blink-interval
53 750 milliseconds blink-interval set-global
55 : stop-blinking ( editor -- )
56 [ [ cancel-alarm ] when* f ] change-blink-alarm drop ;
58 : start-blinking ( editor -- )
61 dup '[ _ blink-caret ] blink-interval get every
65 : restart-blinking ( editor -- )
74 dup caret>> activate-editor-model
75 dup mark>> activate-editor-model ;
80 dup caret>> deactivate-editor-model
81 dup mark>> deactivate-editor-model ;
83 : editor-caret ( editor -- loc ) caret>> value>> ;
85 : editor-mark ( editor -- loc ) mark>> value>> ;
87 : set-caret ( loc editor -- )
88 [ model>> validate-loc ] keep
91 : change-caret ( editor quot -- )
92 [ [ [ editor-caret ] [ model>> ] bi ] dip call ] [ drop ] 2bi
95 : mark>caret ( editor -- )
96 [ editor-caret ] [ mark>> ] bi set-model ;
98 : change-caret&mark ( editor quot -- )
99 [ change-caret ] [ drop mark>caret ] 2bi ; inline
101 : editor-line ( n editor -- str ) control-value nth ;
103 :: point>loc ( point editor -- loc )
104 point second editor y>line {
105 { [ dup 0 < ] [ drop { 0 0 } ] }
106 { [ dup editor model>> last-line# > ] [ drop editor model>> doc-end ] }
116 : clicked-loc ( editor -- loc )
117 [ hand-rel ] keep point>loc ;
119 : click-loc ( editor model -- )
120 [ clicked-loc ] dip set-model ;
122 : focus-editor ( editor -- )
123 [ start-blinking ] [ t >>focused? relayout-1 ] bi ;
125 : unfocus-editor ( editor -- )
126 [ stop-blinking ] [ f >>focused? relayout-1 ] bi ;
128 : loc>x ( loc editor -- x )
129 [ first2 swap ] dip [ editor-line ] [ font>> ] bi swap offset>x round ;
131 : loc>point ( loc editor -- loc )
132 [ loc>x ] [ [ first ] dip line>y ceiling ] 2bi 2array ;
134 : caret-loc ( editor -- loc )
135 [ editor-caret ] keep loc>point ;
137 : caret-dim ( editor -- dim )
138 line-height 0 swap 2array ;
140 : scroll>caret ( editor -- )
141 dup graft-state>> second [
143 [ caret-loc ] [ caret-dim { 1 0 } v+ ] bi <rect>
147 : draw-caret? ( editor -- ? )
148 [ focused?>> ] [ blink>> ] bi and ;
150 : draw-caret ( editor -- )
152 [ caret-color>> gl-color ]
154 [ caret-loc ] [ caret-dim ] bi
159 : selection-start/end ( editor -- start end )
160 [ editor-mark ] [ editor-caret ] bi sort-pair ;
162 SYMBOL: selected-lines
164 TUPLE: selected-line start end first? last? ;
166 : compute-selection ( editor -- assoc )
167 dup gadget-selection? [
168 [ selection-start/end [ [ first ] bi@ [a,b] ] 2keep ] keep model>>
169 '[ [ _ _ ] keep _ start/end-on-line 2array ] H{ } map>assoc
172 :: draw-empty-selection ( line pair editor -- )
173 editor font>> :> font
174 pair first font line offset>x 0 2array [
175 editor selection-color>> gl-color
176 1 font font-metrics height>> 2array gl-fill-rect
179 : draw-unselected-line ( line editor -- )
180 font>> swap draw-text ;
182 : draw-selected-line ( line pair editor -- )
184 [ nip draw-unselected-line ] [ draw-empty-selection ] 3bi
186 [ [ first2 ] [ selection-color>> ] bi* <selection> ] keep
190 M: editor draw-line ( line index editor -- )
191 [ selected-lines get at ] dip over
192 [ draw-selected-line ] [ nip draw-unselected-line ] if ;
194 M: editor draw-gadget*
195 dup compute-selection selected-lines [
196 [ draw-lines ] [ draw-caret ] bi
200 [ font>> ] [ control-value ] bi text-dim ;
202 M: editor baseline font>> font-metrics ascent>> ;
204 M: editor cap-height font>> font-metrics cap-height>> ;
206 : contents-changed ( model editor -- )
208 over caret>> [ over validate-loc ] (change-model)
209 over mark>> [ over validate-loc ] (change-model)
212 : caret/mark-changed ( model editor -- )
213 nip [ restart-blinking ] [ scroll>caret ] bi ;
215 M: editor model-changed
217 { [ 2dup model>> eq? ] [ contents-changed ] }
218 { [ 2dup caret>> eq? ] [ caret/mark-changed ] }
219 { [ 2dup mark>> eq? ] [ caret/mark-changed ] }
222 M: editor gadget-selection?
223 selection-start/end = not ;
225 M: editor gadget-selection
226 [ selection-start/end ] keep model>> doc-range ;
228 : remove-selection ( editor -- )
229 [ selection-start/end ] keep model>> remove-doc-range ;
231 M: editor user-input*
232 [ selection-start/end ] keep model>> set-doc-range t ;
234 : editor-string ( editor -- string )
237 : set-editor-string ( string editor -- )
238 model>> set-doc-string ;
240 M: editor gadget-text* editor-string % ;
242 : extend-selection ( editor -- )
245 dup caret>> click-loc ;
247 : mouse-elt ( -- element )
251 } at one-line-elt or ;
253 : drag-direction? ( loc editor -- ? )
254 editor-mark before? ;
256 : drag-selection-caret ( loc editor element -- loc )
258 [ drag-direction? ] 2keep model>>
259 ] dip prev/next-elt ? ;
261 : drag-selection-mark ( loc editor element -- loc )
263 [ drag-direction? not ] keep
264 [ editor-mark ] [ model>> ] bi
265 ] dip prev/next-elt ? ;
267 : drag-caret&mark ( editor -- caret mark )
268 dup clicked-loc swap mouse-elt
269 [ drag-selection-caret ] 3keep
270 drag-selection-mark ;
272 : drag-selection ( editor -- )
274 pick mark>> set-model
275 swap caret>> set-model ;
277 : editor-cut ( editor clipboard -- )
278 [ gadget-copy ] [ drop remove-selection ] 2bi ;
280 : delete/backspace ( editor quot -- )
281 over gadget-selection? [
282 drop remove-selection
284 [ [ [ editor-caret ] [ model>> ] bi ] dip call ]
289 : editor-delete ( editor elt -- )
290 '[ dupd _ next-elt ] delete/backspace ;
292 : editor-backspace ( editor elt -- )
293 '[ over [ _ prev-elt ] dip ] delete/backspace ;
295 : editor-select-prev ( editor elt -- )
296 '[ _ prev-elt ] change-caret ;
298 : editor-prev ( editor elt -- )
299 [ editor-select-prev ] [ drop mark>caret ] 2bi ;
301 : editor-select-next ( editor elt -- )
302 '[ _ next-elt ] change-caret ;
304 : editor-next ( editor elt -- )
305 dupd editor-select-next mark>caret ;
307 : editor-select ( from to editor -- )
308 [ mark>> set-model ] [ caret>> set-model ] bi-curry bi* ;
310 : select-elt ( editor elt -- )
311 [ [ [ editor-caret ] [ model>> ] bi ] dip prev/next-elt ] [ drop ] 2bi
314 : start-of-document ( editor -- ) doc-elt editor-prev ;
316 : end-of-document ( editor -- ) doc-elt editor-next ;
318 : position-caret ( editor -- )
319 mouse-elt dup one-char-elt =
320 [ drop dup extend-selection dup mark>> click-loc ]
323 : delete-next-character ( editor -- )
324 char-elt editor-delete ;
326 : delete-previous-character ( editor -- )
327 char-elt editor-backspace ;
329 : delete-previous-word ( editor -- )
330 word-elt editor-delete ;
332 : delete-next-word ( editor -- )
333 word-elt editor-backspace ;
335 : delete-to-start-of-line ( editor -- )
336 one-line-elt editor-delete ;
338 : delete-to-end-of-line ( editor -- )
339 one-line-elt editor-backspace ;
341 : com-undo ( editor -- )
344 : com-redo ( editor -- )
348 { undo-action com-undo }
349 { redo-action com-redo }
350 { T{ key-down f f "DELETE" } delete-next-character }
351 { T{ key-down f { S+ } "DELETE" } delete-next-character }
352 { T{ key-down f f "BACKSPACE" } delete-previous-character }
353 { T{ key-down f { S+ } "BACKSPACE" } delete-previous-character }
354 { T{ key-down f { C+ } "DELETE" } delete-previous-word }
355 { T{ key-down f { C+ } "BACKSPACE" } delete-next-word }
356 { T{ key-down f { A+ } "DELETE" } delete-to-start-of-line }
357 { T{ key-down f { A+ } "BACKSPACE" } delete-to-end-of-line }
360 : com-paste ( editor -- ) clipboard get paste-clipboard ;
362 : paste-selection ( editor -- ) selection get paste-clipboard ;
364 : com-cut ( editor -- ) clipboard get editor-cut ;
366 editor "clipboard" f {
367 { paste-action com-paste }
368 { copy-action com-copy }
369 { cut-action com-cut }
370 { T{ button-up f f 2 } paste-selection }
371 { T{ button-up } com-copy-selection }
374 : previous-character ( editor -- )
375 dup gadget-selection? [
376 dup selection-start/end drop
377 over set-caret mark>caret
382 : next-character ( editor -- )
383 dup gadget-selection? [
384 dup selection-start/end nip
385 over set-caret mark>caret
390 : previous-word ( editor -- ) word-elt editor-prev ;
392 : next-word ( editor -- ) word-elt editor-next ;
394 : start-of-line ( editor -- ) one-line-elt editor-prev ;
396 : end-of-line ( editor -- ) one-line-elt editor-next ;
398 editor "caret-motion" f {
399 { T{ button-down } position-caret }
400 { T{ key-down f f "LEFT" } previous-character }
401 { T{ key-down f f "RIGHT" } next-character }
402 { T{ key-down f { C+ } "LEFT" } previous-word }
403 { T{ key-down f { C+ } "RIGHT" } next-word }
404 { T{ key-down f f "HOME" } start-of-line }
405 { T{ key-down f f "END" } end-of-line }
406 { T{ key-down f { C+ } "HOME" } start-of-document }
407 { T{ key-down f { C+ } "END" } end-of-document }
410 : clear-editor ( editor -- )
411 #! The with-datastack is a kludge to make it infer. Stupid.
412 model>> 1array [ clear-doc ] with-datastack drop ;
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{ drag } drag-selection }
452 { gain-focus focus-editor }
453 { lose-focus unfocus-editor }
454 { delete-action remove-selection }
455 { select-all-action select-all }
456 { T{ key-down f { C+ } "l" } select-line }
457 { T{ key-down f { S+ } "LEFT" } select-previous-character }
458 { T{ key-down f { S+ } "RIGHT" } select-next-character }
459 { T{ key-down f { S+ C+ } "LEFT" } select-previous-word }
460 { T{ key-down f { S+ C+ } "RIGHT" } select-next-word }
461 { T{ key-down f { S+ } "HOME" } select-start-of-line }
462 { T{ key-down f { S+ } "END" } select-end-of-line }
463 { T{ key-down f { S+ C+ } "HOME" } select-start-of-document }
464 { T{ key-down f { S+ C+ } "END" } select-end-of-document }
467 : editor-menu ( editor -- )
475 } show-commands-menu ;
478 { T{ button-down f f 3 } editor-menu }
482 TUPLE: multiline-editor < editor ;
484 : <multiline-editor> ( -- editor )
485 multiline-editor new-editor ;
487 : previous-line ( editor -- ) line-elt editor-prev ;
489 : next-line ( editor -- ) line-elt editor-next ;
493 : page-elt ( editor -- editor element ) dup visible-lines 1- <page-elt> ;
497 : previous-page ( editor -- ) page-elt editor-prev ;
499 : next-page ( editor -- ) page-elt editor-next ;
501 : select-previous-line ( editor -- ) line-elt editor-select-prev ;
503 : select-next-line ( editor -- ) line-elt editor-select-next ;
505 : select-previous-page ( editor -- ) page-elt editor-select-prev ;
507 : select-next-page ( editor -- ) page-elt editor-select-next ;
509 : insert-newline ( editor -- )
510 "\n" swap user-input* drop ;
512 : change-selection ( editor quot -- )
513 '[ gadget-selection @ ] keep user-input* drop ; inline
515 : join-lines ( string -- string' )
517 [ rest-slice [ [ blank? ] trim-head-slice ] change-each ]
518 [ but-last-slice [ [ blank? ] trim-tail-slice ] change-each ]
522 : this-line-and-next ( document line -- start end )
523 [ nip 0 swap 2array ]
524 [ [ nip 1+ ] [ 1+ swap doc-line length ] 2bi 2array ]
527 : last-line? ( document line -- ? )
528 [ last-line# ] dip = ;
530 : com-join-lines ( editor -- )
531 dup gadget-selection?
532 [ [ join-lines ] change-selection ] [
533 [ model>> ] [ editor-caret first ] bi
534 2dup last-line? [ 2drop ] [
535 [ this-line-and-next ] [ drop ] 2bi
536 [ join-lines ] change-doc-range
540 multiline-editor "multiline" f {
541 { T{ key-down f f "UP" } previous-line }
542 { T{ key-down f f "DOWN" } next-line }
543 { T{ key-down f { S+ } "UP" } select-previous-line }
544 { T{ key-down f { S+ } "DOWN" } select-next-line }
545 { T{ key-down f f "PAGE_UP" } previous-page }
546 { T{ key-down f f "PAGE_DOWN" } next-page }
547 { T{ key-down f { S+ } "PAGE_UP" } select-previous-page }
548 { T{ key-down f { S+ } "PAGE_DOWN" } select-next-page }
549 { T{ key-down f f "RET" } insert-newline }
550 { T{ key-down f { S+ } "RET" } insert-newline }
551 { T{ key-down f f "ENTER" } insert-newline }
552 { T{ key-down f { C+ } "j" } com-join-lines }
555 TUPLE: source-editor < multiline-editor ;
557 : <source-editor> ( -- editor )
558 source-editor new-editor ;
561 : <element-model> ( editor element -- model )
562 [ [ caret>> ] [ model>> ] bi ] dip
563 '[ _ _ elt-string ] <filter> ;
565 ! Fields wrap an editor
566 TUPLE: field < border editor min-cols max-cols ;
568 : field-theme ( gadget -- gadget )
571 COLOR: gray <solid> >>boundary ; inline
573 : <field-border> ( gadget -- border )
578 : new-field ( class -- gadget )
579 [ <editor> ] dip new-border
580 dup gadget-child >>editor
583 ! For line-gadget-width
584 M: field font>> editor>> font>> ;
588 [ editor>> pref-dim ] keep
589 [ line-gadget-width ] [ drop second ] 2bi 2array
592 TUPLE: model-field < field field-model ;
594 : <model-field> ( model -- gadget )
595 model-field new-field swap >>field-model ;
597 M: model-field graft*
598 [ [ field-model>> value>> ] [ editor>> ] bi set-editor-string ]
599 [ dup editor>> model>> add-connection ]
602 M: model-field ungraft*
603 dup editor>> model>> remove-connection ;
605 M: model-field model-changed
606 nip [ editor>> editor-string ] [ field-model>> ] bi set-model ;
608 TUPLE: action-field < field quot ;
610 : <action-field> ( quot -- gadget )
611 action-field new-field swap >>quot ;
613 : invoke-action-field ( field -- )
614 [ editor>> editor-string ]
615 [ editor>> clear-editor ]
620 { T{ key-down f f "RET" } [ invoke-action-field ] }