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12b55d76 KL |
1 | /* |
2 | * Jexer - Java Text User Interface | |
3 | * | |
4 | * The MIT License (MIT) | |
5 | * | |
a69ed767 | 6 | * Copyright (C) 2019 Kevin Lamonte |
12b55d76 KL |
7 | * |
8 | * Permission is hereby granted, free of charge, to any person obtaining a | |
9 | * copy of this software and associated documentation files (the "Software"), | |
10 | * to deal in the Software without restriction, including without limitation | |
11 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
12 | * and/or sell copies of the Software, and to permit persons to whom the | |
13 | * Software is furnished to do so, subject to the following conditions: | |
14 | * | |
15 | * The above copyright notice and this permission notice shall be included in | |
16 | * all copies or substantial portions of the Software. | |
17 | * | |
18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
20 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
21 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
22 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
23 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER | |
24 | * DEALINGS IN THE SOFTWARE. | |
25 | * | |
26 | * @author Kevin Lamonte [kevin.lamonte@gmail.com] | |
27 | * @version 1 | |
28 | */ | |
29 | package jexer; | |
30 | ||
71a389c9 | 31 | import java.io.IOException; |
21460f44 KL |
32 | import java.util.ArrayList; |
33 | import java.util.List; | |
71a389c9 | 34 | |
12b55d76 | 35 | import jexer.bits.CellAttributes; |
43ee96da | 36 | import jexer.bits.StringUtils; |
101bc589 | 37 | import jexer.event.TCommandEvent; |
12b55d76 KL |
38 | import jexer.event.TKeypressEvent; |
39 | import jexer.event.TMouseEvent; | |
e8a11f98 | 40 | import jexer.event.TResizeEvent; |
12b55d76 KL |
41 | import jexer.teditor.Document; |
42 | import jexer.teditor.Line; | |
43 | import jexer.teditor.Word; | |
101bc589 | 44 | import static jexer.TCommand.*; |
12b55d76 KL |
45 | import static jexer.TKeypress.*; |
46 | ||
47 | /** | |
48 | * TEditorWidget displays an editable text document. It is unaware of | |
49 | * scrolling behavior, but can respond to mouse and keyboard events. | |
50 | */ | |
101bc589 | 51 | public class TEditorWidget extends TWidget implements EditMenuUser { |
12b55d76 | 52 | |
615a0d99 KL |
53 | // ------------------------------------------------------------------------ |
54 | // Constants -------------------------------------------------------------- | |
55 | // ------------------------------------------------------------------------ | |
56 | ||
b1a8acec KL |
57 | /** |
58 | * The number of lines to scroll on mouse wheel up/down. | |
59 | */ | |
60 | private static final int wheelScrollSize = 3; | |
61 | ||
615a0d99 KL |
62 | // ------------------------------------------------------------------------ |
63 | // Variables -------------------------------------------------------------- | |
64 | // ------------------------------------------------------------------------ | |
65 | ||
12b55d76 KL |
66 | /** |
67 | * The document being edited. | |
68 | */ | |
21460f44 | 69 | protected Document document; |
12b55d76 | 70 | |
e8a11f98 | 71 | /** |
21460f44 | 72 | * The default color for the editable text. |
e8a11f98 KL |
73 | */ |
74 | private CellAttributes defaultColor = null; | |
75 | ||
76 | /** | |
77 | * The topmost line number in the visible area. 0-based. | |
78 | */ | |
79 | private int topLine = 0; | |
80 | ||
81 | /** | |
82 | * The leftmost column number in the visible area. 0-based. | |
83 | */ | |
84 | private int leftColumn = 0; | |
85 | ||
101bc589 KL |
86 | /** |
87 | * If true, the mouse is dragging a selection. | |
88 | */ | |
89 | private boolean inSelection = false; | |
90 | ||
91 | /** | |
92 | * Selection starting column. | |
93 | */ | |
94 | private int selectionColumn0; | |
95 | ||
96 | /** | |
97 | * Selection starting line. | |
98 | */ | |
99 | private int selectionLine0; | |
100 | ||
101 | /** | |
102 | * Selection ending column. | |
103 | */ | |
104 | private int selectionColumn1; | |
105 | ||
106 | /** | |
107 | * Selection ending line. | |
108 | */ | |
109 | private int selectionLine1; | |
110 | ||
21460f44 KL |
111 | /** |
112 | * The list of undo/redo states. | |
113 | */ | |
114 | private List<SavedState> undoList = new ArrayList<SavedState>(); | |
115 | ||
116 | /** | |
117 | * The position in undoList for undo/redo. | |
118 | */ | |
119 | private int undoListI = 0; | |
120 | ||
121 | /** | |
122 | * The maximum size of the undo list. | |
123 | */ | |
124 | private int undoLevel = 50; | |
125 | ||
126 | /** | |
127 | * The saved state for an undo/redo operation. | |
128 | */ | |
129 | private class SavedState { | |
130 | /** | |
131 | * The Document state. | |
132 | */ | |
133 | public Document document; | |
134 | ||
135 | /** | |
136 | * The topmost line number in the visible area. 0-based. | |
137 | */ | |
138 | public int topLine = 0; | |
139 | ||
140 | /** | |
141 | * The leftmost column number in the visible area. 0-based. | |
142 | */ | |
143 | public int leftColumn = 0; | |
144 | ||
145 | } | |
146 | ||
615a0d99 KL |
147 | // ------------------------------------------------------------------------ |
148 | // Constructors ----------------------------------------------------------- | |
149 | // ------------------------------------------------------------------------ | |
150 | ||
12b55d76 KL |
151 | /** |
152 | * Public constructor. | |
153 | * | |
154 | * @param parent parent widget | |
155 | * @param text text on the screen | |
156 | * @param x column relative to parent | |
157 | * @param y row relative to parent | |
158 | * @param width width of text area | |
159 | * @param height height of text area | |
160 | */ | |
161 | public TEditorWidget(final TWidget parent, final String text, final int x, | |
162 | final int y, final int width, final int height) { | |
163 | ||
164 | // Set parent and window | |
165 | super(parent, x, y, width, height); | |
166 | ||
167 | setCursorVisible(true); | |
e8a11f98 KL |
168 | |
169 | defaultColor = getTheme().getColor("teditor"); | |
170 | document = new Document(text, defaultColor); | |
12b55d76 KL |
171 | } |
172 | ||
615a0d99 | 173 | // ------------------------------------------------------------------------ |
101bc589 | 174 | // Event handlers --------------------------------------------------------- |
615a0d99 KL |
175 | // ------------------------------------------------------------------------ |
176 | ||
12b55d76 KL |
177 | /** |
178 | * Handle mouse press events. | |
179 | * | |
180 | * @param mouse mouse button press event | |
181 | */ | |
182 | @Override | |
183 | public void onMouseDown(final TMouseEvent mouse) { | |
184 | if (mouse.isMouseWheelUp()) { | |
b1a8acec KL |
185 | for (int i = 0; i < wheelScrollSize; i++) { |
186 | if (topLine > 0) { | |
187 | topLine--; | |
188 | alignDocument(false); | |
189 | } | |
e8a11f98 | 190 | } |
12b55d76 KL |
191 | return; |
192 | } | |
193 | if (mouse.isMouseWheelDown()) { | |
b1a8acec KL |
194 | for (int i = 0; i < wheelScrollSize; i++) { |
195 | if (topLine < document.getLineCount() - 1) { | |
196 | topLine++; | |
197 | alignDocument(true); | |
198 | } | |
e8a11f98 | 199 | } |
12b55d76 KL |
200 | return; |
201 | } | |
202 | ||
e8a11f98 | 203 | if (mouse.isMouse1()) { |
101bc589 | 204 | // Selection. |
9240f032 KL |
205 | int newLine = topLine + mouse.getY(); |
206 | int newX = leftColumn + mouse.getX(); | |
207 | ||
20c416a0 | 208 | inSelection = true; |
9240f032 KL |
209 | if (newLine > document.getLineCount() - 1) { |
210 | selectionLine0 = document.getLineCount() - 1; | |
211 | } else { | |
212 | selectionLine0 = topLine + mouse.getY(); | |
213 | } | |
3c5921e6 KL |
214 | selectionColumn0 = leftColumn + mouse.getX(); |
215 | selectionColumn0 = Math.max(0, Math.min(selectionColumn0, | |
216 | document.getLine(selectionLine0).getDisplayLength() - 1)); | |
20c416a0 KL |
217 | selectionColumn1 = selectionColumn0; |
218 | selectionLine1 = selectionLine0; | |
101bc589 KL |
219 | |
220 | // Set the row and column | |
101bc589 KL |
221 | if (newLine > document.getLineCount() - 1) { |
222 | // Go to the end | |
223 | document.setLineNumber(document.getLineCount() - 1); | |
224 | document.end(); | |
225 | if (newLine > document.getLineCount() - 1) { | |
226 | setCursorY(document.getLineCount() - 1 - topLine); | |
227 | } else { | |
228 | setCursorY(mouse.getY()); | |
229 | } | |
230 | alignCursor(); | |
231 | if (inSelection) { | |
232 | selectionColumn1 = document.getCursor(); | |
233 | selectionLine1 = document.getLineNumber(); | |
101bc589 KL |
234 | } |
235 | return; | |
236 | } | |
237 | ||
238 | document.setLineNumber(newLine); | |
239 | setCursorY(mouse.getY()); | |
240 | if (newX >= document.getCurrentLine().getDisplayLength()) { | |
241 | document.end(); | |
242 | alignCursor(); | |
243 | } else { | |
244 | document.setCursor(newX); | |
245 | setCursorX(mouse.getX()); | |
246 | } | |
247 | if (inSelection) { | |
248 | selectionColumn1 = document.getCursor(); | |
249 | selectionLine1 = document.getLineNumber(); | |
101bc589 KL |
250 | } |
251 | return; | |
252 | } else { | |
253 | inSelection = false; | |
254 | } | |
255 | ||
256 | // Pass to children | |
257 | super.onMouseDown(mouse); | |
258 | } | |
259 | ||
260 | /** | |
261 | * Handle mouse motion events. | |
262 | * | |
263 | * @param mouse mouse motion event | |
264 | */ | |
265 | @Override | |
266 | public void onMouseMotion(final TMouseEvent mouse) { | |
267 | ||
268 | if (mouse.isMouse1()) { | |
8d3480c7 KL |
269 | // Set the row and column |
270 | int newLine = topLine + mouse.getY(); | |
271 | int newX = leftColumn + mouse.getX(); | |
272 | if ((newLine < 0) || (newX < 0)) { | |
273 | return; | |
274 | } | |
275 | ||
101bc589 KL |
276 | // Selection. |
277 | if (inSelection) { | |
8d3480c7 KL |
278 | selectionColumn1 = newX; |
279 | selectionLine1 = newLine; | |
20c416a0 | 280 | } else { |
101bc589 | 281 | inSelection = true; |
8d3480c7 KL |
282 | selectionColumn0 = newX; |
283 | selectionLine0 = newLine; | |
101bc589 KL |
284 | selectionColumn1 = selectionColumn0; |
285 | selectionLine1 = selectionLine0; | |
101bc589 KL |
286 | } |
287 | ||
df602ccf | 288 | if (newLine > document.getLineCount() - 1) { |
e8a11f98 KL |
289 | // Go to the end |
290 | document.setLineNumber(document.getLineCount() - 1); | |
291 | document.end(); | |
df602ccf KL |
292 | if (newLine > document.getLineCount() - 1) { |
293 | setCursorY(document.getLineCount() - 1 - topLine); | |
e8a11f98 | 294 | } else { |
df602ccf | 295 | setCursorY(mouse.getY()); |
e8a11f98 KL |
296 | } |
297 | alignCursor(); | |
101bc589 KL |
298 | if (inSelection) { |
299 | selectionColumn1 = document.getCursor(); | |
300 | selectionLine1 = document.getLineNumber(); | |
101bc589 | 301 | } |
e8a11f98 KL |
302 | return; |
303 | } | |
e8a11f98 KL |
304 | document.setLineNumber(newLine); |
305 | setCursorY(mouse.getY()); | |
4297b49b | 306 | if (newX >= document.getCurrentLine().getDisplayLength()) { |
e8a11f98 KL |
307 | document.end(); |
308 | alignCursor(); | |
309 | } else { | |
df602ccf | 310 | document.setCursor(newX); |
e8a11f98 KL |
311 | setCursorX(mouse.getX()); |
312 | } | |
101bc589 KL |
313 | if (inSelection) { |
314 | selectionColumn1 = document.getCursor(); | |
315 | selectionLine1 = document.getLineNumber(); | |
101bc589 | 316 | } |
e8a11f98 KL |
317 | return; |
318 | } | |
12b55d76 KL |
319 | |
320 | // Pass to children | |
321 | super.onMouseDown(mouse); | |
322 | } | |
323 | ||
324 | /** | |
325 | * Handle keystrokes. | |
326 | * | |
327 | * @param keypress keystroke event | |
328 | */ | |
329 | @Override | |
330 | public void onKeypress(final TKeypressEvent keypress) { | |
43ee96da | 331 | if (keypress.getKey().isShift()) { |
21460f44 KL |
332 | if (keypress.equals(kbShiftLeft) |
333 | || keypress.equals(kbShiftRight) | |
334 | || keypress.equals(kbShiftUp) | |
335 | || keypress.equals(kbShiftDown) | |
336 | || keypress.equals(kbShiftPgDn) | |
337 | || keypress.equals(kbShiftPgUp) | |
338 | || keypress.equals(kbShiftHome) | |
339 | || keypress.equals(kbShiftEnd) | |
340 | ) { | |
341 | // Shifted navigation keys enable selection | |
342 | if (!inSelection) { | |
343 | inSelection = true; | |
344 | selectionColumn0 = document.getCursor(); | |
345 | selectionLine0 = document.getLineNumber(); | |
346 | selectionColumn1 = selectionColumn0; | |
347 | selectionLine1 = selectionLine0; | |
348 | } | |
101bc589 KL |
349 | } |
350 | } else { | |
43ee96da KL |
351 | if (keypress.equals(kbLeft) |
352 | || keypress.equals(kbRight) | |
353 | || keypress.equals(kbUp) | |
354 | || keypress.equals(kbDown) | |
355 | || keypress.equals(kbPgDn) | |
356 | || keypress.equals(kbPgUp) | |
357 | || keypress.equals(kbHome) | |
358 | || keypress.equals(kbEnd) | |
359 | ) { | |
360 | // Non-shifted navigation keys disable selection. | |
361 | inSelection = false; | |
362 | } | |
4941d2d6 KL |
363 | if ((selectionColumn0 == selectionColumn1) |
364 | && (selectionLine0 == selectionLine1) | |
365 | ) { | |
366 | // The user clicked a spot and started typing. | |
367 | inSelection = false; | |
368 | } | |
101bc589 KL |
369 | } |
370 | ||
371 | if (keypress.equals(kbLeft) | |
372 | || keypress.equals(kbShiftLeft) | |
373 | ) { | |
df602ccf KL |
374 | document.left(); |
375 | alignTopLine(false); | |
101bc589 KL |
376 | } else if (keypress.equals(kbRight) |
377 | || keypress.equals(kbShiftRight) | |
378 | ) { | |
df602ccf KL |
379 | document.right(); |
380 | alignTopLine(true); | |
e23989a4 KL |
381 | } else if (keypress.equals(kbAltLeft) |
382 | || keypress.equals(kbCtrlLeft) | |
43ee96da KL |
383 | || keypress.equals(kbAltShiftLeft) |
384 | || keypress.equals(kbCtrlShiftLeft) | |
e23989a4 KL |
385 | ) { |
386 | document.backwardsWord(); | |
387 | alignTopLine(false); | |
388 | } else if (keypress.equals(kbAltRight) | |
389 | || keypress.equals(kbCtrlRight) | |
43ee96da KL |
390 | || keypress.equals(kbAltShiftRight) |
391 | || keypress.equals(kbCtrlShiftRight) | |
e23989a4 KL |
392 | ) { |
393 | document.forwardsWord(); | |
394 | alignTopLine(true); | |
101bc589 KL |
395 | } else if (keypress.equals(kbUp) |
396 | || keypress.equals(kbShiftUp) | |
397 | ) { | |
71a389c9 KL |
398 | document.up(); |
399 | alignTopLine(false); | |
101bc589 KL |
400 | } else if (keypress.equals(kbDown) |
401 | || keypress.equals(kbShiftDown) | |
402 | ) { | |
71a389c9 KL |
403 | document.down(); |
404 | alignTopLine(true); | |
43ee96da KL |
405 | } else if (keypress.equals(kbPgUp) |
406 | || keypress.equals(kbShiftPgUp) | |
407 | ) { | |
71a389c9 KL |
408 | document.up(getHeight() - 1); |
409 | alignTopLine(false); | |
43ee96da KL |
410 | } else if (keypress.equals(kbPgDn) |
411 | || keypress.equals(kbShiftPgDn) | |
412 | ) { | |
71a389c9 KL |
413 | document.down(getHeight() - 1); |
414 | alignTopLine(true); | |
43ee96da KL |
415 | } else if (keypress.equals(kbHome) |
416 | || keypress.equals(kbShiftHome) | |
417 | ) { | |
e8a11f98 KL |
418 | if (document.home()) { |
419 | leftColumn = 0; | |
420 | if (leftColumn < 0) { | |
421 | leftColumn = 0; | |
422 | } | |
423 | setCursorX(0); | |
424 | } | |
43ee96da KL |
425 | } else if (keypress.equals(kbEnd) |
426 | || keypress.equals(kbShiftEnd) | |
427 | ) { | |
e8a11f98 KL |
428 | if (document.end()) { |
429 | alignCursor(); | |
430 | } | |
43ee96da KL |
431 | } else if (keypress.equals(kbCtrlHome) |
432 | || keypress.equals(kbCtrlShiftHome) | |
433 | ) { | |
12b55d76 KL |
434 | document.setLineNumber(0); |
435 | document.home(); | |
e8a11f98 KL |
436 | topLine = 0; |
437 | leftColumn = 0; | |
438 | setCursorX(0); | |
439 | setCursorY(0); | |
43ee96da KL |
440 | } else if (keypress.equals(kbCtrlEnd) |
441 | || keypress.equals(kbCtrlShiftEnd) | |
442 | ) { | |
12b55d76 KL |
443 | document.setLineNumber(document.getLineCount() - 1); |
444 | document.end(); | |
71a389c9 | 445 | alignTopLine(false); |
12b55d76 | 446 | } else if (keypress.equals(kbIns)) { |
21460f44 | 447 | document.setOverwrite(!document.isOverwrite()); |
12b55d76 | 448 | } else if (keypress.equals(kbDel)) { |
43ee96da KL |
449 | if (inSelection) { |
450 | deleteSelection(); | |
21460f44 | 451 | alignCursor(); |
43ee96da | 452 | } else { |
21460f44 | 453 | saveUndo(); |
43ee96da | 454 | document.del(); |
21460f44 | 455 | alignCursor(); |
43ee96da | 456 | } |
39e86397 KL |
457 | } else if (keypress.equals(kbBackspace) |
458 | || keypress.equals(kbBackspaceDel) | |
459 | ) { | |
43ee96da KL |
460 | if (inSelection) { |
461 | deleteSelection(); | |
21460f44 | 462 | alignTopLine(false); |
43ee96da | 463 | } else { |
21460f44 | 464 | saveUndo(); |
43ee96da | 465 | document.backspace(); |
21460f44 | 466 | alignTopLine(false); |
43ee96da | 467 | } |
df602ccf | 468 | } else if (keypress.equals(kbTab)) { |
43ee96da | 469 | deleteSelection(); |
21460f44 KL |
470 | saveUndo(); |
471 | document.tab(); | |
472 | alignCursor(); | |
473 | } else if (keypress.equals(kbShiftTab)) { | |
474 | deleteSelection(); | |
475 | saveUndo(); | |
476 | document.backTab(); | |
e8a11f98 | 477 | alignCursor(); |
71a389c9 | 478 | } else if (keypress.equals(kbEnter)) { |
43ee96da | 479 | deleteSelection(); |
21460f44 | 480 | saveUndo(); |
df602ccf KL |
481 | document.enter(); |
482 | alignTopLine(true); | |
12b55d76 KL |
483 | } else if (!keypress.getKey().isFnKey() |
484 | && !keypress.getKey().isAlt() | |
485 | && !keypress.getKey().isCtrl() | |
486 | ) { | |
487 | // Plain old keystroke, process it | |
43ee96da | 488 | deleteSelection(); |
21460f44 | 489 | saveUndo(); |
2d3f60d8 | 490 | document.addChar(keypress.getKey().getChar()); |
71a389c9 | 491 | alignCursor(); |
12b55d76 KL |
492 | } else { |
493 | // Pass other keys (tab etc.) on to TWidget | |
494 | super.onKeypress(keypress); | |
495 | } | |
101bc589 KL |
496 | |
497 | if (inSelection) { | |
498 | selectionColumn1 = document.getCursor(); | |
499 | selectionLine1 = document.getLineNumber(); | |
101bc589 | 500 | } |
12b55d76 KL |
501 | } |
502 | ||
e8a11f98 KL |
503 | /** |
504 | * Method that subclasses can override to handle window/screen resize | |
505 | * events. | |
506 | * | |
507 | * @param resize resize event | |
508 | */ | |
509 | @Override | |
510 | public void onResize(final TResizeEvent resize) { | |
511 | // Change my width/height, and pull the cursor in as needed. | |
512 | if (resize.getType() == TResizeEvent.Type.WIDGET) { | |
513 | setWidth(resize.getWidth()); | |
514 | setHeight(resize.getHeight()); | |
515 | // See if the cursor is now outside the window, and if so move | |
516 | // things. | |
517 | if (getCursorX() >= getWidth()) { | |
518 | leftColumn += getCursorX() - (getWidth() - 1); | |
519 | setCursorX(getWidth() - 1); | |
520 | } | |
521 | if (getCursorY() >= getHeight()) { | |
522 | topLine += getCursorY() - (getHeight() - 1); | |
523 | setCursorY(getHeight() - 1); | |
524 | } | |
525 | } else { | |
526 | // Let superclass handle it | |
527 | super.onResize(resize); | |
528 | } | |
529 | } | |
530 | ||
101bc589 KL |
531 | /** |
532 | * Handle posted command events. | |
533 | * | |
534 | * @param command command event | |
535 | */ | |
536 | @Override | |
537 | public void onCommand(final TCommandEvent command) { | |
538 | if (command.equals(cmCut)) { | |
539 | // Copy text to clipboard, and then remove it. | |
43ee96da | 540 | copySelection(); |
101bc589 KL |
541 | deleteSelection(); |
542 | return; | |
543 | } | |
544 | ||
545 | if (command.equals(cmCopy)) { | |
546 | // Copy text to clipboard. | |
43ee96da | 547 | copySelection(); |
101bc589 KL |
548 | return; |
549 | } | |
550 | ||
551 | if (command.equals(cmPaste)) { | |
552 | // Delete selected text, then paste text from clipboard. | |
553 | deleteSelection(); | |
554 | ||
555 | String text = getClipboard().pasteText(); | |
556 | if (text != null) { | |
557 | for (int i = 0; i < text.length(); ) { | |
558 | int ch = text.codePointAt(i); | |
21460f44 KL |
559 | switch (ch) { |
560 | case '\n': | |
561 | onKeypress(new TKeypressEvent(kbEnter)); | |
562 | break; | |
563 | case '\t': | |
564 | onKeypress(new TKeypressEvent(kbTab)); | |
565 | break; | |
566 | default: | |
567 | if ((ch >= 0x20) && (ch != 0x7F)) { | |
568 | onKeypress(new TKeypressEvent(false, 0, ch, | |
569 | false, false, false)); | |
570 | } | |
571 | break; | |
572 | } | |
573 | ||
101bc589 KL |
574 | i += Character.charCount(ch); |
575 | } | |
576 | } | |
577 | return; | |
578 | } | |
579 | ||
580 | if (command.equals(cmClear)) { | |
581 | // Remove text. | |
582 | deleteSelection(); | |
583 | return; | |
584 | } | |
585 | ||
586 | } | |
587 | ||
588 | // ------------------------------------------------------------------------ | |
589 | // TWidget ---------------------------------------------------------------- | |
590 | // ------------------------------------------------------------------------ | |
591 | ||
592 | /** | |
593 | * Draw the text box. | |
594 | */ | |
595 | @Override | |
596 | public void draw() { | |
43ee96da KL |
597 | CellAttributes selectedColor = getTheme().getColor("teditor.selected"); |
598 | ||
3c5921e6 KL |
599 | boolean drawSelection = true; |
600 | ||
43ee96da KL |
601 | int startCol = selectionColumn0; |
602 | int startRow = selectionLine0; | |
603 | int endCol = selectionColumn1; | |
604 | int endRow = selectionLine1; | |
605 | ||
606 | if (((selectionColumn1 < selectionColumn0) | |
8d3480c7 KL |
607 | && (selectionLine1 == selectionLine0)) |
608 | || (selectionLine1 < selectionLine0) | |
43ee96da | 609 | ) { |
8d3480c7 KL |
610 | // The user selected from bottom-to-top and/or right-to-left. |
611 | // Reverse the coordinates for the inverted section. | |
43ee96da KL |
612 | startCol = selectionColumn1; |
613 | startRow = selectionLine1; | |
614 | endCol = selectionColumn0; | |
615 | endRow = selectionLine0; | |
616 | } | |
3c5921e6 KL |
617 | if ((startCol == endCol) && (startRow == endRow)) { |
618 | drawSelection = false; | |
619 | } | |
43ee96da | 620 | |
101bc589 KL |
621 | for (int i = 0; i < getHeight(); i++) { |
622 | // Background line | |
623 | getScreen().hLineXY(0, i, getWidth(), ' ', defaultColor); | |
624 | ||
625 | // Now draw document's line | |
626 | if (topLine + i < document.getLineCount()) { | |
627 | Line line = document.getLine(topLine + i); | |
628 | int x = 0; | |
629 | for (Word word: line.getWords()) { | |
630 | // For now, we are cheating: draw outside the left region | |
631 | // if needed and let screen do the clipping. | |
632 | getScreen().putStringXY(x - leftColumn, i, word.getText(), | |
633 | word.getColor()); | |
634 | x += word.getDisplayLength(); | |
635 | if (x - leftColumn > getWidth()) { | |
636 | break; | |
637 | } | |
638 | } | |
101bc589 | 639 | |
43ee96da | 640 | // Highlight selected region |
3c5921e6 | 641 | if (inSelection && drawSelection) { |
43ee96da KL |
642 | if (startRow == endRow) { |
643 | if (topLine + i == startRow) { | |
644 | for (x = startCol; x <= endCol; x++) { | |
645 | putAttrXY(x - leftColumn, i, selectedColor); | |
646 | } | |
647 | } | |
648 | } else { | |
649 | if (topLine + i == startRow) { | |
650 | for (x = startCol; x < line.getDisplayLength(); x++) { | |
651 | putAttrXY(x - leftColumn, i, selectedColor); | |
652 | } | |
653 | } else if (topLine + i == endRow) { | |
654 | for (x = 0; x <= endCol; x++) { | |
655 | putAttrXY(x - leftColumn, i, selectedColor); | |
656 | } | |
657 | } else if ((topLine + i >= startRow) | |
658 | && (topLine + i <= endRow) | |
659 | ) { | |
660 | for (x = 0; x < getWidth(); x++) { | |
661 | putAttrXY(x, i, selectedColor); | |
662 | } | |
663 | } | |
664 | } | |
665 | } | |
666 | ||
667 | } | |
101bc589 KL |
668 | } |
669 | } | |
670 | ||
615a0d99 KL |
671 | // ------------------------------------------------------------------------ |
672 | // TEditorWidget ---------------------------------------------------------- | |
673 | // ------------------------------------------------------------------------ | |
674 | ||
21460f44 KL |
675 | /** |
676 | * Set the undo level. | |
677 | * | |
678 | * @param undoLevel the maximum number of undo operations | |
679 | */ | |
680 | public void setUndoLevel(final int undoLevel) { | |
681 | this.undoLevel = undoLevel; | |
682 | } | |
683 | ||
615a0d99 KL |
684 | /** |
685 | * Align visible area with document current line. | |
686 | * | |
687 | * @param topLineIsTop if true, make the top visible line the document | |
688 | * current line if it was off-screen. If false, make the bottom visible | |
689 | * line the document current line. | |
690 | */ | |
691 | private void alignTopLine(final boolean topLineIsTop) { | |
692 | int line = document.getLineNumber(); | |
693 | ||
694 | if ((line < topLine) || (line > topLine + getHeight() - 1)) { | |
695 | // Need to move topLine to bring document back into view. | |
696 | if (topLineIsTop) { | |
697 | topLine = line - (getHeight() - 1); | |
698 | if (topLine < 0) { | |
699 | topLine = 0; | |
700 | } | |
701 | assert (topLine >= 0); | |
702 | } else { | |
703 | topLine = line; | |
704 | assert (topLine >= 0); | |
705 | } | |
706 | } | |
707 | ||
708 | /* | |
709 | System.err.println("line " + line + " topLine " + topLine); | |
710 | */ | |
711 | ||
712 | // Document is in view, let's set cursorY | |
713 | assert (line >= topLine); | |
714 | setCursorY(line - topLine); | |
715 | alignCursor(); | |
716 | } | |
717 | ||
718 | /** | |
719 | * Align document current line with visible area. | |
720 | * | |
721 | * @param topLineIsTop if true, make the top visible line the document | |
722 | * current line if it was off-screen. If false, make the bottom visible | |
723 | * line the document current line. | |
724 | */ | |
725 | private void alignDocument(final boolean topLineIsTop) { | |
726 | int line = document.getLineNumber(); | |
727 | int cursor = document.getCursor(); | |
728 | ||
729 | if ((line < topLine) || (line > topLine + getHeight() - 1)) { | |
730 | // Need to move document to ensure it fits view. | |
731 | if (topLineIsTop) { | |
732 | document.setLineNumber(topLine); | |
733 | } else { | |
734 | document.setLineNumber(topLine + (getHeight() - 1)); | |
735 | } | |
736 | if (cursor < document.getCurrentLine().getDisplayLength()) { | |
737 | document.setCursor(cursor); | |
738 | } | |
739 | } | |
740 | ||
741 | /* | |
742 | System.err.println("getLineNumber() " + document.getLineNumber() + | |
743 | " topLine " + topLine); | |
744 | */ | |
745 | ||
746 | // Document is in view, let's set cursorY | |
747 | setCursorY(document.getLineNumber() - topLine); | |
748 | alignCursor(); | |
749 | } | |
750 | ||
751 | /** | |
752 | * Align visible cursor with document cursor. | |
753 | */ | |
754 | private void alignCursor() { | |
755 | int width = getWidth(); | |
756 | ||
757 | int desiredX = document.getCursor() - leftColumn; | |
758 | if (desiredX < 0) { | |
759 | // We need to push the screen to the left. | |
760 | leftColumn = document.getCursor(); | |
761 | } else if (desiredX > width - 1) { | |
762 | // We need to push the screen to the right. | |
763 | leftColumn = document.getCursor() - (width - 1); | |
764 | } | |
765 | ||
766 | /* | |
767 | System.err.println("document cursor " + document.getCursor() + | |
768 | " leftColumn " + leftColumn); | |
769 | */ | |
770 | ||
771 | ||
772 | setCursorX(document.getCursor() - leftColumn); | |
773 | } | |
774 | ||
71a389c9 KL |
775 | /** |
776 | * Get the number of lines in the underlying Document. | |
777 | * | |
778 | * @return the number of lines | |
779 | */ | |
780 | public int getLineCount() { | |
781 | return document.getLineCount(); | |
782 | } | |
783 | ||
b6faeac0 KL |
784 | /** |
785 | * Get the current visible top row number. 1-based. | |
786 | * | |
787 | * @return the visible top row number. Row 1 is the first row. | |
788 | */ | |
789 | public int getVisibleRowNumber() { | |
790 | return topLine + 1; | |
791 | } | |
792 | ||
793 | /** | |
794 | * Set the current visible row number. 1-based. | |
795 | * | |
796 | * @param row the new visible row number. Row 1 is the first row. | |
797 | */ | |
798 | public void setVisibleRowNumber(final int row) { | |
799 | assert (row > 0); | |
800 | if ((row > 0) && (row < document.getLineCount())) { | |
801 | topLine = row - 1; | |
802 | alignDocument(true); | |
803 | } | |
804 | } | |
805 | ||
71a389c9 KL |
806 | /** |
807 | * Get the current editing row number. 1-based. | |
808 | * | |
809 | * @return the editing row number. Row 1 is the first row. | |
810 | */ | |
811 | public int getEditingRowNumber() { | |
812 | return document.getLineNumber() + 1; | |
813 | } | |
814 | ||
815 | /** | |
816 | * Set the current editing row number. 1-based. | |
817 | * | |
818 | * @param row the new editing row number. Row 1 is the first row. | |
819 | */ | |
820 | public void setEditingRowNumber(final int row) { | |
fe0770f9 KL |
821 | assert (row > 0); |
822 | if ((row > 0) && (row < document.getLineCount())) { | |
823 | document.setLineNumber(row - 1); | |
824 | alignTopLine(true); | |
825 | } | |
71a389c9 KL |
826 | } |
827 | ||
1bc08f18 KL |
828 | /** |
829 | * Set the current visible column number. 1-based. | |
830 | * | |
831 | * @return the visible column number. Column 1 is the first column. | |
832 | */ | |
833 | public int getVisibleColumnNumber() { | |
834 | return leftColumn + 1; | |
835 | } | |
836 | ||
837 | /** | |
838 | * Set the current visible column number. 1-based. | |
839 | * | |
840 | * @param column the new visible column number. Column 1 is the first | |
841 | * column. | |
842 | */ | |
843 | public void setVisibleColumnNumber(final int column) { | |
844 | assert (column > 0); | |
845 | if ((column > 0) && (column < document.getLineLengthMax())) { | |
846 | leftColumn = column - 1; | |
847 | alignDocument(true); | |
848 | } | |
849 | } | |
850 | ||
71a389c9 KL |
851 | /** |
852 | * Get the current editing column number. 1-based. | |
853 | * | |
854 | * @return the editing column number. Column 1 is the first column. | |
855 | */ | |
856 | public int getEditingColumnNumber() { | |
857 | return document.getCursor() + 1; | |
858 | } | |
859 | ||
860 | /** | |
861 | * Set the current editing column number. 1-based. | |
862 | * | |
863 | * @param column the new editing column number. Column 1 is the first | |
864 | * column. | |
865 | */ | |
866 | public void setEditingColumnNumber(final int column) { | |
fe0770f9 KL |
867 | if ((column > 0) && (column < document.getLineLength())) { |
868 | document.setCursor(column - 1); | |
869 | alignCursor(); | |
870 | } | |
71a389c9 KL |
871 | } |
872 | ||
873 | /** | |
874 | * Get the maximum possible row number. 1-based. | |
875 | * | |
876 | * @return the maximum row number. Row 1 is the first row. | |
877 | */ | |
878 | public int getMaximumRowNumber() { | |
879 | return document.getLineCount() + 1; | |
880 | } | |
881 | ||
882 | /** | |
883 | * Get the maximum possible column number. 1-based. | |
884 | * | |
885 | * @return the maximum column number. Column 1 is the first column. | |
886 | */ | |
887 | public int getMaximumColumnNumber() { | |
888 | return document.getLineLengthMax() + 1; | |
889 | } | |
890 | ||
ed76cd41 KL |
891 | /** |
892 | * Get the current editing row plain text. 1-based. | |
893 | * | |
894 | * @param row the editing row number. Row 1 is the first row. | |
895 | * @return the plain text of the row | |
896 | */ | |
897 | public String getEditingRawLine(final int row) { | |
898 | Line line = document.getLine(row - 1); | |
899 | return line.getRawString(); | |
900 | } | |
901 | ||
71a389c9 KL |
902 | /** |
903 | * Get the dirty value. | |
904 | * | |
905 | * @return true if the buffer is dirty | |
906 | */ | |
907 | public boolean isDirty() { | |
908 | return document.isDirty(); | |
909 | } | |
910 | ||
ed76cd41 KL |
911 | /** |
912 | * Unset the dirty flag. | |
913 | */ | |
914 | public void setNotDirty() { | |
915 | document.setNotDirty(); | |
916 | } | |
917 | ||
21460f44 KL |
918 | /** |
919 | * Get the overwrite value. | |
920 | * | |
921 | * @return true if new text will overwrite old text | |
922 | */ | |
923 | public boolean isOverwrite() { | |
924 | return document.isOverwrite(); | |
925 | } | |
926 | ||
71a389c9 KL |
927 | /** |
928 | * Save contents to file. | |
929 | * | |
930 | * @param filename file to save to | |
931 | * @throws IOException if a java.io operation throws | |
932 | */ | |
933 | public void saveToFilename(final String filename) throws IOException { | |
934 | document.saveToFilename(filename); | |
935 | } | |
936 | ||
101bc589 KL |
937 | /** |
938 | * Delete text within the selection bounds. | |
939 | */ | |
940 | private void deleteSelection() { | |
3c5921e6 | 941 | if (!inSelection) { |
101bc589 KL |
942 | return; |
943 | } | |
21460f44 KL |
944 | |
945 | saveUndo(); | |
946 | ||
43ee96da KL |
947 | inSelection = false; |
948 | ||
949 | int startCol = selectionColumn0; | |
950 | int startRow = selectionLine0; | |
951 | int endCol = selectionColumn1; | |
952 | int endRow = selectionLine1; | |
953 | ||
8d3480c7 KL |
954 | /* |
955 | System.err.println("INITIAL: " + startRow + " " + startCol + " " + | |
956 | endRow + " " + endCol + " " + | |
957 | document.getLineNumber() + " " + document.getCursor()); | |
958 | */ | |
959 | ||
43ee96da | 960 | if (((selectionColumn1 < selectionColumn0) |
8d3480c7 KL |
961 | && (selectionLine1 == selectionLine0)) |
962 | || (selectionLine1 < selectionLine0) | |
43ee96da | 963 | ) { |
8d3480c7 KL |
964 | // The user selected from bottom-to-top and/or right-to-left. |
965 | // Reverse the coordinates for the inverted section. | |
43ee96da KL |
966 | startCol = selectionColumn1; |
967 | startRow = selectionLine1; | |
968 | endCol = selectionColumn0; | |
969 | endRow = selectionLine0; | |
8d3480c7 KL |
970 | |
971 | if (endRow >= document.getLineCount()) { | |
972 | // The selection started beyond EOF, trim it to EOF. | |
973 | endRow = document.getLineCount() - 1; | |
974 | endCol = document.getLine(endRow).getDisplayLength(); | |
975 | } else if (endRow == document.getLineCount() - 1) { | |
976 | // The selection started beyond EOF, trim it to EOF. | |
977 | if (endCol >= document.getLine(endRow).getDisplayLength()) { | |
978 | endCol = document.getLine(endRow).getDisplayLength() - 1; | |
979 | } | |
980 | } | |
981 | } | |
982 | /* | |
983 | System.err.println("FLIP: " + startRow + " " + startCol + " " + | |
984 | endRow + " " + endCol + " " + | |
985 | document.getLineNumber() + " " + document.getCursor()); | |
986 | System.err.println(" --END: " + endRow + " " + document.getLineCount() + | |
987 | " " + document.getLine(endRow).getDisplayLength()); | |
988 | */ | |
989 | ||
990 | assert (endRow < document.getLineCount()); | |
991 | if (endCol >= document.getLine(endRow).getDisplayLength()) { | |
992 | endCol = document.getLine(endRow).getDisplayLength() - 1; | |
993 | } | |
994 | if (endCol < 0) { | |
995 | endCol = 0; | |
996 | } | |
997 | if (startCol >= document.getLine(startRow).getDisplayLength()) { | |
998 | startCol = document.getLine(startRow).getDisplayLength() - 1; | |
999 | } | |
1000 | if (startCol < 0) { | |
1001 | startCol = 0; | |
43ee96da KL |
1002 | } |
1003 | ||
1004 | // Place the cursor on the selection end, and "press backspace" until | |
1005 | // the cursor matches the selection start. | |
8d3480c7 KL |
1006 | /* |
1007 | System.err.println("BEFORE: " + startRow + " " + startCol + " " + | |
1008 | endRow + " " + endCol + " " + | |
1009 | document.getLineNumber() + " " + document.getCursor()); | |
1010 | */ | |
43ee96da KL |
1011 | document.setLineNumber(endRow); |
1012 | document.setCursor(endCol + 1); | |
1013 | while (!((document.getLineNumber() == startRow) | |
1014 | && (document.getCursor() == startCol)) | |
1015 | ) { | |
8d3480c7 KL |
1016 | /* |
1017 | System.err.println("DURING: " + startRow + " " + startCol + " " + | |
1018 | endRow + " " + endCol + " " + | |
1019 | document.getLineNumber() + " " + document.getCursor()); | |
1020 | */ | |
1021 | ||
43ee96da KL |
1022 | document.backspace(); |
1023 | } | |
1024 | alignTopLine(true); | |
1025 | } | |
1026 | ||
1027 | /** | |
1028 | * Copy text within the selection bounds to clipboard. | |
1029 | */ | |
1030 | private void copySelection() { | |
3c5921e6 | 1031 | if (!inSelection) { |
43ee96da KL |
1032 | return; |
1033 | } | |
3c5921e6 KL |
1034 | getClipboard().copyText(getSelection()); |
1035 | } | |
1036 | ||
1037 | /** | |
1038 | * Set the selection. | |
1039 | * | |
1040 | * @param startRow the starting row number. 0-based: row 0 is the first | |
1041 | * row. | |
1042 | * @param startColumn the starting column number. 0-based: column 0 is | |
1043 | * the first column. | |
1044 | * @param endRow the ending row number. 0-based: row 0 is the first row. | |
1045 | * @param endColumn the ending column number. 0-based: column 0 is the | |
1046 | * first column. | |
1047 | */ | |
1048 | public void setSelection(final int startRow, final int startColumn, | |
1049 | final int endRow, final int endColumn) { | |
1050 | ||
1051 | inSelection = true; | |
1052 | selectionLine0 = startRow; | |
1053 | selectionColumn0 = startColumn; | |
1054 | selectionLine1 = endRow; | |
1055 | selectionColumn1 = endColumn; | |
1056 | } | |
1057 | ||
1058 | /** | |
1059 | * Copy text within the selection bounds to a string. | |
1060 | * | |
1061 | * @return the selection as a string, or null if there is no selection | |
1062 | */ | |
1063 | public String getSelection() { | |
1064 | if (!inSelection) { | |
1065 | return null; | |
1066 | } | |
43ee96da KL |
1067 | |
1068 | int startCol = selectionColumn0; | |
1069 | int startRow = selectionLine0; | |
1070 | int endCol = selectionColumn1; | |
1071 | int endRow = selectionLine1; | |
1072 | ||
1073 | if (((selectionColumn1 < selectionColumn0) | |
8d3480c7 KL |
1074 | && (selectionLine1 == selectionLine0)) |
1075 | || (selectionLine1 < selectionLine0) | |
43ee96da | 1076 | ) { |
8d3480c7 KL |
1077 | // The user selected from bottom-to-top and/or right-to-left. |
1078 | // Reverse the coordinates for the inverted section. | |
43ee96da KL |
1079 | startCol = selectionColumn1; |
1080 | startRow = selectionLine1; | |
1081 | endCol = selectionColumn0; | |
1082 | endRow = selectionLine0; | |
1083 | } | |
1084 | ||
1085 | StringBuilder sb = new StringBuilder(); | |
1086 | ||
1087 | if (endRow > startRow) { | |
1088 | // First line | |
1089 | String line = document.getLine(startRow).getRawString(); | |
1090 | int x = 0; | |
1091 | for (int i = 0; i < line.length(); ) { | |
1092 | int ch = line.codePointAt(i); | |
1093 | ||
1094 | if (x >= startCol) { | |
1095 | sb.append(Character.toChars(ch)); | |
1096 | } | |
1097 | x += StringUtils.width(ch); | |
1098 | i += Character.charCount(ch); | |
1099 | } | |
1100 | sb.append("\n"); | |
1101 | ||
1102 | // Middle lines | |
1103 | for (int y = startRow + 1; y < endRow; y++) { | |
1104 | sb.append(document.getLine(y).getRawString()); | |
1105 | sb.append("\n"); | |
1106 | } | |
1107 | ||
1108 | // Final line | |
1109 | line = document.getLine(endRow).getRawString(); | |
1110 | x = 0; | |
1111 | for (int i = 0; i < line.length(); ) { | |
1112 | int ch = line.codePointAt(i); | |
1113 | ||
1114 | if (x > endCol) { | |
1115 | break; | |
1116 | } | |
1117 | ||
1118 | sb.append(Character.toChars(ch)); | |
1119 | x += StringUtils.width(ch); | |
1120 | i += Character.charCount(ch); | |
1121 | } | |
1122 | } else { | |
1123 | assert (startRow == endRow); | |
1124 | ||
1125 | // Only one line | |
1126 | String line = document.getLine(startRow).getRawString(); | |
1127 | int x = 0; | |
1128 | for (int i = 0; i < line.length(); ) { | |
1129 | int ch = line.codePointAt(i); | |
1130 | ||
1131 | if ((x >= startCol) && (x <= endCol)) { | |
1132 | sb.append(Character.toChars(ch)); | |
1133 | } | |
1134 | ||
1135 | x += StringUtils.width(ch); | |
1136 | i += Character.charCount(ch); | |
1137 | } | |
1138 | } | |
3c5921e6 KL |
1139 | return sb.toString(); |
1140 | } | |
1141 | ||
1142 | /** | |
1143 | * Get the selection starting row number. | |
1144 | * | |
1145 | * @return the starting row number, or -1 if there is no selection. | |
1146 | * 0-based: row 0 is the first row. | |
1147 | */ | |
1148 | public int getSelectionStartRow() { | |
1149 | if (!inSelection) { | |
1150 | return -1; | |
1151 | } | |
1152 | ||
1153 | int startCol = selectionColumn0; | |
1154 | int startRow = selectionLine0; | |
1155 | int endCol = selectionColumn1; | |
1156 | int endRow = selectionLine1; | |
101bc589 | 1157 | |
3c5921e6 KL |
1158 | if (((selectionColumn1 < selectionColumn0) |
1159 | && (selectionLine1 == selectionLine0)) | |
1160 | || (selectionLine1 < selectionLine0) | |
1161 | ) { | |
1162 | // The user selected from bottom-to-top and/or right-to-left. | |
1163 | // Reverse the coordinates for the inverted section. | |
1164 | startCol = selectionColumn1; | |
1165 | startRow = selectionLine1; | |
1166 | endCol = selectionColumn0; | |
1167 | endRow = selectionLine0; | |
1168 | } | |
1169 | return startRow; | |
101bc589 KL |
1170 | } |
1171 | ||
ed76cd41 | 1172 | /** |
3c5921e6 | 1173 | * Get the selection starting column number. |
ed76cd41 | 1174 | * |
3c5921e6 KL |
1175 | * @return the starting column number, or -1 if there is no selection. |
1176 | * 0-based: column 0 is the first column. | |
ed76cd41 | 1177 | */ |
3c5921e6 KL |
1178 | public int getSelectionStartColumn() { |
1179 | if (!inSelection) { | |
1180 | return -1; | |
1181 | } | |
ed76cd41 | 1182 | |
3c5921e6 KL |
1183 | int startCol = selectionColumn0; |
1184 | int startRow = selectionLine0; | |
1185 | int endCol = selectionColumn1; | |
1186 | int endRow = selectionLine1; | |
1187 | ||
1188 | if (((selectionColumn1 < selectionColumn0) | |
1189 | && (selectionLine1 == selectionLine0)) | |
1190 | || (selectionLine1 < selectionLine0) | |
1191 | ) { | |
1192 | // The user selected from bottom-to-top and/or right-to-left. | |
1193 | // Reverse the coordinates for the inverted section. | |
1194 | startCol = selectionColumn1; | |
1195 | startRow = selectionLine1; | |
1196 | endCol = selectionColumn0; | |
1197 | endRow = selectionLine0; | |
1198 | } | |
1199 | return startCol; | |
1200 | } | |
1201 | ||
1202 | /** | |
1203 | * Get the selection ending row number. | |
1204 | * | |
1205 | * @return the ending row number, or -1 if there is no selection. | |
1206 | * 0-based: row 0 is the first row. | |
1207 | */ | |
1208 | public int getSelectionEndRow() { | |
1209 | if (!inSelection) { | |
1210 | return -1; | |
1211 | } | |
1212 | ||
1213 | int startCol = selectionColumn0; | |
1214 | int startRow = selectionLine0; | |
1215 | int endCol = selectionColumn1; | |
1216 | int endRow = selectionLine1; | |
1217 | ||
1218 | if (((selectionColumn1 < selectionColumn0) | |
1219 | && (selectionLine1 == selectionLine0)) | |
1220 | || (selectionLine1 < selectionLine0) | |
1221 | ) { | |
1222 | // The user selected from bottom-to-top and/or right-to-left. | |
1223 | // Reverse the coordinates for the inverted section. | |
1224 | startCol = selectionColumn1; | |
1225 | startRow = selectionLine1; | |
1226 | endCol = selectionColumn0; | |
1227 | endRow = selectionLine0; | |
1228 | } | |
1229 | return endRow; | |
1230 | } | |
1231 | ||
1232 | /** | |
1233 | * Get the selection ending column number. | |
1234 | * | |
1235 | * @return the ending column number, or -1 if there is no selection. | |
1236 | * 0-based: column 0 is the first column. | |
1237 | */ | |
1238 | public int getSelectionEndColumn() { | |
1239 | if (!inSelection) { | |
1240 | return -1; | |
1241 | } | |
1242 | ||
1243 | int startCol = selectionColumn0; | |
1244 | int startRow = selectionLine0; | |
1245 | int endCol = selectionColumn1; | |
1246 | int endRow = selectionLine1; | |
1247 | ||
1248 | if (((selectionColumn1 < selectionColumn0) | |
1249 | && (selectionLine1 == selectionLine0)) | |
1250 | || (selectionLine1 < selectionLine0) | |
1251 | ) { | |
1252 | // The user selected from bottom-to-top and/or right-to-left. | |
1253 | // Reverse the coordinates for the inverted section. | |
1254 | startCol = selectionColumn1; | |
1255 | startRow = selectionLine1; | |
1256 | endCol = selectionColumn0; | |
1257 | endRow = selectionLine0; | |
1258 | } | |
1259 | return endCol; | |
ed76cd41 KL |
1260 | } |
1261 | ||
1262 | /** | |
1263 | * Unset the selection. | |
1264 | */ | |
1265 | public void unsetSelection() { | |
1266 | inSelection = false; | |
1267 | } | |
1268 | ||
1269 | /** | |
1270 | * Replace whatever is being selected with new text. If not in | |
1271 | * selection, nothing is replaced. | |
1272 | * | |
1273 | * @param text the new replacement text | |
1274 | */ | |
1275 | public void replaceSelection(final String text) { | |
1276 | if (!inSelection) { | |
1277 | return; | |
1278 | } | |
1279 | ||
1280 | // Delete selected text, then paste text from clipboard. | |
1281 | deleteSelection(); | |
1282 | ||
1283 | for (int i = 0; i < text.length(); ) { | |
1284 | int ch = text.codePointAt(i); | |
21460f44 KL |
1285 | switch (ch) { |
1286 | case '\n': | |
1287 | onKeypress(new TKeypressEvent(kbEnter)); | |
1288 | break; | |
1289 | case '\t': | |
1290 | onKeypress(new TKeypressEvent(kbTab)); | |
1291 | break; | |
1292 | default: | |
1293 | if ((ch >= 0x20) && (ch != 0x7F)) { | |
1294 | onKeypress(new TKeypressEvent(false, 0, ch, | |
1295 | false, false, false)); | |
1296 | } | |
1297 | break; | |
1298 | } | |
ed76cd41 KL |
1299 | i += Character.charCount(ch); |
1300 | } | |
1301 | } | |
1302 | ||
3c5921e6 KL |
1303 | /** |
1304 | * Check if selection is available. | |
1305 | * | |
1306 | * @return true if a selection has been made | |
1307 | */ | |
1308 | public boolean hasSelection() { | |
1309 | return inSelection; | |
1310 | } | |
1311 | ||
ed76cd41 KL |
1312 | /** |
1313 | * Get the entire contents of the editor as one string. | |
1314 | * | |
1315 | * @return the editor contents | |
1316 | */ | |
1317 | public String getText() { | |
1318 | return document.getText(); | |
1319 | } | |
1320 | ||
1321 | /** | |
1322 | * Set the entire contents of the editor from one string. | |
1323 | * | |
1324 | * @param text the new contents | |
1325 | */ | |
1326 | public void setText(final String text) { | |
1327 | document = new Document(text, defaultColor); | |
1328 | unsetSelection(); | |
1329 | topLine = 0; | |
1330 | leftColumn = 0; | |
1331 | } | |
1332 | ||
101bc589 KL |
1333 | // ------------------------------------------------------------------------ |
1334 | // EditMenuUser ----------------------------------------------------------- | |
1335 | // ------------------------------------------------------------------------ | |
1336 | ||
1337 | /** | |
1338 | * Check if the cut menu item should be enabled. | |
1339 | * | |
1340 | * @return true if the cut menu item should be enabled | |
1341 | */ | |
1342 | public boolean isEditMenuCut() { | |
1343 | return true; | |
1344 | } | |
1345 | ||
1346 | /** | |
1347 | * Check if the copy menu item should be enabled. | |
1348 | * | |
1349 | * @return true if the copy menu item should be enabled | |
1350 | */ | |
1351 | public boolean isEditMenuCopy() { | |
1352 | return true; | |
1353 | } | |
1354 | ||
1355 | /** | |
1356 | * Check if the paste menu item should be enabled. | |
1357 | * | |
1358 | * @return true if the paste menu item should be enabled | |
1359 | */ | |
1360 | public boolean isEditMenuPaste() { | |
1361 | return true; | |
1362 | } | |
1363 | ||
1364 | /** | |
1365 | * Check if the clear menu item should be enabled. | |
1366 | * | |
1367 | * @return true if the clear menu item should be enabled | |
1368 | */ | |
1369 | public boolean isEditMenuClear() { | |
1370 | return true; | |
1371 | } | |
1372 | ||
21460f44 KL |
1373 | /** |
1374 | * Save undo state. | |
1375 | */ | |
1376 | private void saveUndo() { | |
1377 | SavedState state = new SavedState(); | |
1378 | state.document = document.dup(); | |
1379 | state.topLine = topLine; | |
1380 | state.leftColumn = leftColumn; | |
1381 | if (undoLevel > 0) { | |
1382 | while (undoList.size() > undoLevel) { | |
1383 | undoList.remove(0); | |
1384 | } | |
1385 | } | |
1386 | undoList.add(state); | |
1387 | undoListI = undoList.size() - 1; | |
1388 | } | |
1389 | ||
1390 | /** | |
1391 | * Undo an edit. | |
1392 | */ | |
1393 | public void undo() { | |
1394 | inSelection = false; | |
1395 | if ((undoListI >= 0) && (undoListI < undoList.size())) { | |
1396 | SavedState state = undoList.get(undoListI); | |
1397 | document = state.document.dup(); | |
1398 | topLine = state.topLine; | |
1399 | leftColumn = state.leftColumn; | |
1400 | undoListI--; | |
1401 | setCursorY(document.getLineNumber() - topLine); | |
1402 | alignCursor(); | |
1403 | } | |
1404 | } | |
1405 | ||
1406 | /** | |
1407 | * Redo an edit. | |
1408 | */ | |
1409 | public void redo() { | |
1410 | inSelection = false; | |
1411 | if ((undoListI >= 0) && (undoListI < undoList.size())) { | |
1412 | SavedState state = undoList.get(undoListI); | |
1413 | document = state.document.dup(); | |
1414 | topLine = state.topLine; | |
1415 | leftColumn = state.leftColumn; | |
1416 | undoListI++; | |
1417 | setCursorY(document.getLineNumber() - topLine); | |
1418 | alignCursor(); | |
1419 | } | |
1420 | } | |
1421 | ||
1422 | /** | |
1423 | * Trim trailing whitespace from lines and trailing empty | |
1424 | * lines from the document. | |
1425 | */ | |
1426 | public void cleanWhitespace() { | |
1427 | document.cleanWhitespace(); | |
1428 | setCursorY(document.getLineNumber() - topLine); | |
1429 | alignCursor(); | |
1430 | } | |
1431 | ||
1432 | /** | |
1433 | * Set keyword highlighting. | |
1434 | * | |
1435 | * @param enabled if true, enable keyword highlighting | |
1436 | */ | |
1437 | public void setHighlighting(final boolean enabled) { | |
1438 | document.setHighlighting(enabled); | |
1439 | } | |
1440 | ||
12b55d76 | 1441 | } |