-
Notifications
You must be signed in to change notification settings - Fork 5.5k
/
XListPeer.java
1991 lines (1795 loc) · 71.5 KB
/
XListPeer.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*
* Copyright (c) 2003, 2023, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
// Very much based on XListPeer from javaos
package sun.awt.X11;
import java.awt.*;
import java.awt.event.*;
import java.awt.peer.*;
import java.util.Objects;
import java.util.Vector;
import java.awt.image.*;
import sun.util.logging.PlatformLogger;
// TODO: some input actions should do nothing if Shift or Control are down
class XListPeer extends XComponentPeer implements ListPeer, XScrollbarClient {
private static final PlatformLogger log = PlatformLogger.getLogger("sun.awt.X11.XListPeer");
public static final int MARGIN = 2;
public static final int SPACE = 1;
public static final int SCROLLBAR_AREA = 17; // Area reserved for the
// scrollbar
public static final int SCROLLBAR_WIDTH = 13; // Actual width of the
// scrollbar
public static final int NONE = -1;
public static final int WINDOW = 0;
public static final int VERSCROLLBAR = 1;
public static final int HORSCROLLBAR = 2;
public static final int DEFAULT_VISIBLE_ROWS = 4; // From java.awt.List,
public static final int HORIZ_SCROLL_AMT = 10;
private static final int PAINT_VSCROLL = 2;
private static final int PAINT_HSCROLL = 4;
private static final int PAINT_ITEMS = 8;
private static final int PAINT_FOCUS = 16;
private static final int PAINT_BACKGROUND = 32;
private static final int PAINT_HIDEFOCUS = 64;
private static final int PAINT_ALL =
PAINT_VSCROLL | PAINT_HSCROLL | PAINT_ITEMS | PAINT_FOCUS | PAINT_BACKGROUND;
private static final int COPY_AREA = 128;
XVerticalScrollbar vsb;
XHorizontalScrollbar hsb;
ListPainter painter;
// TODO: ick - Vector?
Vector<String> items;
boolean multipleSelections;
int active = NONE;
// Holds the array of the indexes of the elements which is selected
// This array should be kept sorted, low to high.
int[] selected;
int fontHeight;
int fontAscent;
int fontLeading;
// Holds the index of the item used in the previous operation (selectItem, deselectItem)
// Adding of an item or clearing of the list sets this index to -1
// The index is used at the moment of the post of ACTION_PERFORMED event after the mouse double click event.
int currentIndex = -1;
// Used for tracking selection/deselection between mousePress/Release
// and for ItemEvents
int eventIndex = -1;
int eventType = NONE;
// Holds the index of the item that receive focus
// This variable is reasonable only for multiple list
// since 'focusIndex' and 'selected[0]' are equal for single-selection list
int focusIndex;
int maxLength;
boolean vsbVis; // visibility of scrollbars
boolean hsbVis;
int listWidth; // Width of list portion of List
int listHeight; // Height of list portion of List
// (i.e. without scrollbars)
private int firstTimeVisibleIndex = 0;
// Motif Lists don't seem to inherit the background color from their
// parent when an app is first started up. So, we track if the colors have
// been set. See getListBackground()/getListForeground().
boolean bgColorSet;
boolean fgColorSet;
// Holds the true if mouse is dragging outside of the area of the list
// The flag is used at the moment of the dragging and releasing mouse
// See 6243382 for more information
boolean mouseDraggedOutHorizontally = false;
boolean mouseDraggedOutVertically = false;
// Holds the true if a mouse event was originated on the scrollbar
// See 6300527 for more information
boolean isScrollBarOriginated = false;
// This variable is set to true after the "mouse pressed" event and to false after the "mouse released" event
// Fixed 6293432: Key events ('SPACE', 'UP', 'DOWN') aren't blocked if mouse is kept in 'PRESSED' state for List, XAWT
boolean isMousePressed = false;
/**
* Create a list
*/
XListPeer(List target) {
super(target);
}
/**
* Overridden from XWindow
*/
public void preInit(XCreateWindowParams params) {
super.preInit(params);
// Stuff that must be initialized before layout() is called
items = new Vector<>();
createVerScrollbar();
createHorScrollbar();
painter = new ListPainter();
// See 6246467 for more information
bgColorSet = target.isBackgroundSet();
fgColorSet = target.isForegroundSet();
}
public void postInit(XCreateWindowParams params) {
super.postInit(params);
initFontMetrics();
// TODO: more efficient way?
// do we really want/need a copy of all the items?
// get all items from target
List l = (List)target;
int stop = l.getItemCount();
for (int i = 0 ; i < stop; i++) {
items.addElement(l.getItem(i));
}
/* make the visible position visible. */
int index = l.getVisibleIndex();
if (index >= 0) {
// Can't call makeVisible since it check scroll bar,
// initialize scroll bar instead
vsb.setValues(index, 0, 0, items.size());
}
// NOTE: needs to have target set
maxLength = maxLength();
// get the index containing all indexes to selected items
int[] sel = l.getSelectedIndexes();
selected = new int[sel.length];
// TODO: shouldn't this be arraycopy()?
for (int i = 0 ; i < sel.length ; i ++) {
selected[i] = sel[i];
}
// The select()ed item should become the focused item, but we don't
// get the select() call because the peer generally hasn't yet been
// created during app initialization.
// TODO: For multi-select lists, it should be the highest selected index
if (sel.length > 0) {
setFocusIndex(sel[sel.length - 1]);
}
else {
setFocusIndex(0);
}
multipleSelections = l.isMultipleMode();
}
/**
* add Vertical Scrollbar
*/
void createVerScrollbar() {
vsb = new XVerticalScrollbar(this);
vsb.setValues(0, 0, 0, 0, 1, 1);
}
/**
* add Horizontal scrollbar
*/
void createHorScrollbar() {
hsb = new XHorizontalScrollbar(this);
hsb.setValues(0, 0, 0, 0, HORIZ_SCROLL_AMT, HORIZ_SCROLL_AMT);
}
public void add(String item, int index) {
addItem(item, index);
}
public void removeAll() {
clear();
maxLength = 0;
}
public void setMultipleMode (boolean b) {
setMultipleSelections(b);
}
public Dimension getMinimumSize() {
return getMinimumSize(DEFAULT_VISIBLE_ROWS);
}
public Dimension getPreferredSize(int rows) {
return getMinimumSize(rows);
}
public Dimension getMinimumSize(int rows) {
FontMetrics fm = getFontMetrics(getFont());
initFontMetrics();
return new Dimension(20 + fm.stringWidth("0123456789abcde"),
getItemHeight() * rows + (2*MARGIN));
}
/**
* Calculate font metrics
*/
void initFontMetrics() {
FontMetrics fm = getFontMetrics(getFont());
fontHeight = fm.getHeight();
fontAscent = fm.getAscent();
fontLeading = fm.getLeading();
}
/**
* return the length of the largest item in the list
*/
int maxLength() {
FontMetrics fm = getFontMetrics(getFont());
int m = 0;
int end = items.size();
for(int i = 0 ; i < end ; i++) {
int l = fm.stringWidth(items.elementAt(i));
m = Math.max(m, l);
}
return m;
}
/**
* Calculates the width of item's label
*/
int getItemWidth(int i) {
FontMetrics fm = getFontMetrics(getFont());
return fm.stringWidth(items.elementAt(i));
}
/**
* return the on-screen width of the given string "str"
*/
int stringLength(String str) {
FontMetrics fm = getFontMetrics(target.getFont());
return fm.stringWidth(str);
}
public void setForeground(Color c) {
fgColorSet = true;
super.setForeground(c);
}
public void setBackground(Color c) {
bgColorSet = true;
super.setBackground(c);
}
/**
* Returns the color that should be used to paint the background of
* the list of items. Note that this is not the same as
* target.getBackground() which is the color of the scrollbars, and the
* lower-right corner of the Component when the scrollbars are displayed.
*/
private Color getListBackground(Color[] colors) {
if (bgColorSet) {
return colors[BACKGROUND_COLOR];
}
else {
return SystemColor.text;
}
}
/**
* Returns the color that should be used to paint the list item text.
*/
private Color getListForeground(Color[] colors) {
if (fgColorSet) {
return colors[FOREGROUND_COLOR];
}
else {
return SystemColor.textText;
}
}
Rectangle getVScrollBarRec() {
return new Rectangle(width - (SCROLLBAR_WIDTH), 0, SCROLLBAR_WIDTH+1, height);
}
Rectangle getHScrollBarRec() {
return new Rectangle(0, height - SCROLLBAR_WIDTH, width, SCROLLBAR_WIDTH);
}
int getFirstVisibleItem() {
if (vsbVis) {
return vsb.getValue();
} else {
return 0;
}
}
int getLastVisibleItem() {
if (vsbVis) {
return Math.min(items.size()-1, vsb.getValue() + itemsInWindow() -1);
} else {
return Math.min(items.size()-1, itemsInWindow()-1);
}
}
public void repaintScrollbarRequest(XScrollbar scrollbar) {
if (scrollbar == hsb) {
repaint(PAINT_HSCROLL);
}
else if (scrollbar == vsb) {
repaint(PAINT_VSCROLL);
}
}
/**
* Overridden for performance
*/
public void repaint() {
repaint(getFirstVisibleItem(), getLastVisibleItem(), PAINT_ALL);
}
private void repaint(int options) {
repaint(getFirstVisibleItem(), getLastVisibleItem(), options);
}
private void repaint(int firstItem, int lastItem, int options) {
repaint(firstItem, lastItem, options, null, null);
}
/**
* In most cases the entire area of the component doesn't have
* to be repainted. The method repaints the particular areas of
* the component. The areas to repaint is specified by the option
* parameter. The possible values of the option parameter are:
* PAINT_VSCROLL, PAINT_HSCROLL, PAINT_ITEMS, PAINT_FOCUS,
* PAINT_HIDEFOCUS, PAINT_BACKGROUND, PAINT_ALL, COPY_AREA.
*
* Note that the COPY_AREA value initiates copy of a source area
* of the component by a distance by means of the copyArea method
* of the Graphics class.
*
* @param firstItem the position of the first item of the range to repaint
* @param lastItem the position of the last item of the range to repaint
* @param options specifies the particular area of the component to repaint
* @param source the area of the component to copy
* @param distance the distance to copy the source area
*/
private void repaint(int firstItem, int lastItem, int options, Rectangle source, Point distance) {
final Graphics g = getGraphics();
if (g != null) {
try {
painter.paint(g, firstItem, lastItem, options, source, distance);
postPaintEvent(target, 0, 0, getWidth(), getHeight());
} finally {
g.dispose();
}
}
}
@Override
void paintPeer(final Graphics g) {
painter.paint(g, getFirstVisibleItem(), getLastVisibleItem(), PAINT_ALL);
}
public boolean isFocusable() { return true; }
// TODO: share/promote the Focus methods?
public void focusGained(FocusEvent e) {
super.focusGained(e);
repaint(PAINT_FOCUS);
}
public void focusLost(FocusEvent e) {
super.focusLost(e);
repaint(PAINT_FOCUS);
}
/**
* Layout the sub-components of the List - that is, the scrollbars and the
* list of items.
*/
public void layout() {
int vis, maximum;
boolean vsbWasVisible;
int origVSBVal;
assert(target != null);
// Start with assumption there is not a horizontal scrollbar,
// see if we need a vertical scrollbar
// Bug: If the list DOES have a horiz scrollbar and the value is set to
// the very bottom value, value is reset in setValues() because it isn't
// a valid value for cases when the list DOESN'T have a horiz scrollbar.
// This is currently worked-around with origVSGVal.
origVSBVal = vsb.getValue();
vis = itemsInWindow(false);
maximum = items.size() < vis ? vis : items.size();
vsb.setValues(vsb.getValue(), vis, vsb.getMinimum(), maximum);
vsbVis = vsbWasVisible = vsbIsVisible(false);
listHeight = height;
// now see if we need a horizontal scrollbar
listWidth = getListWidth();
vis = listWidth - ((2 * SPACE) + (2 * MARGIN));
maximum = maxLength < vis ? vis : maxLength;
hsb.setValues(hsb.getValue(), vis, hsb.getMinimum(), maximum);
hsbVis = hsbIsVisible(vsbVis);
if (hsbVis) {
// do need a horizontal scrollbar, so recalculate height of
// vertical scrollbar
listHeight = height - SCROLLBAR_AREA;
vis = itemsInWindow(true);
maximum = items.size() < vis ? vis : items.size();
vsb.setValues(origVSBVal, vis, vsb.getMinimum(), maximum);
vsbVis = vsbIsVisible(true);
}
// now check to make sure we haven't changed need for vertical
// scrollbar - if we have, we need to
// recalculate horizontal scrollbar width - then we're done...
if (vsbWasVisible != vsbVis) {
listWidth = getListWidth();
vis = listWidth - ((2 * SPACE) + (2 * MARGIN));
maximum = maxLength < vis ? 0 : maxLength;
hsb.setValues(hsb.getValue(), vis, hsb.getMinimum(), maximum);
hsbVis = hsbIsVisible(vsbVis);
}
vsb.setSize(SCROLLBAR_WIDTH, listHeight);
hsb.setSize(listWidth, SCROLLBAR_WIDTH);
vsb.setBlockIncrement(itemsInWindow());
hsb.setBlockIncrement(width - ((2 * SPACE) + (2 * MARGIN) + (vsbVis ? SCROLLBAR_AREA : 0)));
}
int getItemWidth() {
return width - ((2 * MARGIN) + (vsbVis ? SCROLLBAR_AREA : 0));
}
/* Returns height of an item in the list */
int getItemHeight() {
return (fontHeight - fontLeading) + (2*SPACE);
}
int getItemX() {
return MARGIN + SPACE;
}
int getItemY(int item) {
return index2y(item);
}
int getFocusIndex() {
return focusIndex;
}
void setFocusIndex(int value) {
focusIndex = value;
}
/**
* Update and return the focus rectangle.
* Focus is around the focused item, if it is visible, or
* around the border of the list if the focused item is scrolled off the top
* or bottom of the list.
*/
Rectangle getFocusRect() {
Rectangle focusRect = new Rectangle();
// width is always only based on presence of vert sb
focusRect.x = 1;
focusRect.width = getListWidth() - 3;
// if focused item is not currently displayed in the list, paint
// focus around entire list (not including scrollbars)
if (isIndexDisplayed(getFocusIndex())) {
// focus rect is around the item
focusRect.y = index2y(getFocusIndex()) - 2;
focusRect.height = getItemHeight()+1;
} else {
// focus rect is around the list
focusRect.y = 1;
focusRect.height = hsbVis ? height - SCROLLBAR_AREA : height;
focusRect.height -= 3;
}
return focusRect;
}
public void handleConfigureNotifyEvent(XEvent xev) {
super.handleConfigureNotifyEvent(xev);
// Update buffer
painter.invalidate();
}
public boolean handlesWheelScrolling() { return true; }
// FIXME: need to support MouseWheel scrolling, too
void handleJavaMouseEvent(MouseEvent e) {
super.handleJavaMouseEvent(e);
int i = e.getID();
switch (i) {
case MouseEvent.MOUSE_PRESSED:
mousePressed(e);
break;
case MouseEvent.MOUSE_RELEASED:
mouseReleased(e);
break;
case MouseEvent.MOUSE_DRAGGED:
mouseDragged(e);
break;
}
}
void handleJavaMouseWheelEvent(MouseWheelEvent e) {
if (ListHelper.doWheelScroll(vsbVis ? vsb : null,
hsbVis ? hsb : null, e)) {
repaint();
}
}
@SuppressWarnings("deprecation")
void mousePressed(MouseEvent mouseEvent) {
if (log.isLoggable(PlatformLogger.Level.FINER)) {
log.finer(mouseEvent.toString() + ", hsb " + hsbVis + ", vsb " + vsbVis);
}
if (isEnabled() && mouseEvent.getButton() == MouseEvent.BUTTON1) {
if (inWindow(mouseEvent.getX(), mouseEvent.getY())) {
if (log.isLoggable(PlatformLogger.Level.FINE)) {
log.fine("Mouse press in items area");
}
active = WINDOW;
int i = y2index(mouseEvent.getY());
if (i >= 0) {
if (multipleSelections) {
if (isSelected(i)) {
// See 6243382 for more information
deselectItem(i);
eventIndex = i;
eventType = ItemEvent.DESELECTED;
}
else {
selectItem(i);
eventIndex = i;
eventType = ItemEvent.SELECTED;
}
}
// Backward-compatible bug: even if a single-select
// item is already selected, we send an ITEM_STATE_CHANGED/
// SELECTED event. Engineer's Toolbox appears to rely on
// this.
//else if (!isSelected(i)) {
else {
selectItem(i);
eventIndex = i;
eventType = ItemEvent.SELECTED;
}
// Restoring Windows behaviour
// We should update focus index after "mouse pressed" event
setFocusIndex(i);
repaint(PAINT_FOCUS);
} else {
// 6426186: reset variable to prevent action event
// if user clicks on unoccupied area of list
currentIndex = -1;
}
} else if (inVerticalScrollbar(mouseEvent.getX(), mouseEvent.getY())) {
if (log.isLoggable(PlatformLogger.Level.FINE)) {
log.fine("Mouse press in vertical scrollbar");
}
active = VERSCROLLBAR;
vsb.handleMouseEvent(mouseEvent.getID(),
mouseEvent.getModifiers(),
mouseEvent.getX() - (width - SCROLLBAR_WIDTH),
mouseEvent.getY());
} else if (inHorizontalScrollbar(mouseEvent.getX(), mouseEvent.getY())) {
if (log.isLoggable(PlatformLogger.Level.FINE)) {
log.fine("Mouse press in horizontal scrollbar");
}
active = HORSCROLLBAR;
hsb.handleMouseEvent(mouseEvent.getID(),
mouseEvent.getModifiers(),
mouseEvent.getX(),
mouseEvent.getY() - (height - SCROLLBAR_WIDTH));
}
isMousePressed = true;
}
}
@SuppressWarnings("deprecation")
void mouseReleased(MouseEvent mouseEvent) {
if (isEnabled() && mouseEvent.getButton() == MouseEvent.BUTTON1) {
//winReleaseCursorFocus();
int clickCount = mouseEvent.getClickCount();
if (active == VERSCROLLBAR) {
vsb.handleMouseEvent(mouseEvent.getID(),
mouseEvent.getModifiers(),
mouseEvent.getX()-(width-SCROLLBAR_WIDTH),
mouseEvent.getY());
} else if(active == HORSCROLLBAR) {
hsb.handleMouseEvent(mouseEvent.getID(),
mouseEvent.getModifiers(),
mouseEvent.getX(),
mouseEvent.getY()-(height-SCROLLBAR_WIDTH));
} else if ( ( currentIndex >= 0 ) && ( clickCount >= 2 ) &&
( clickCount % 2 == 0 ) ) {
postEvent(new ActionEvent(target,
ActionEvent.ACTION_PERFORMED,
items.elementAt(currentIndex),
mouseEvent.getWhen(),
mouseEvent.getModifiers())); // No ext mods
} else if (active == WINDOW) {
// See 6243382 for more information
trackMouseReleasedScroll();
if (eventType == ItemEvent.DESELECTED) {
assert multipleSelections : "Shouldn't get a deselect for a single-select List";
// Paint deselection the release
deselectItem(eventIndex);
}
if (eventType != NONE) {
postEvent(new ItemEvent((List)target,
ItemEvent.ITEM_STATE_CHANGED,
Integer.valueOf(eventIndex),
eventType));
}
}
active = NONE;
eventIndex = -1;
eventType = NONE;
isMousePressed = false;
}
}
@SuppressWarnings("deprecation")
void mouseDragged(MouseEvent mouseEvent) {
// TODO: can you drag w/ any other buttons? what about multiple buttons?
if (isEnabled() &&
(mouseEvent.getModifiersEx() & InputEvent.BUTTON1_DOWN_MASK) != 0) {
if ((active == VERSCROLLBAR)) {
vsb.handleMouseEvent(mouseEvent.getID(),
mouseEvent.getModifiers(),
mouseEvent.getX()-(width-SCROLLBAR_WIDTH),
mouseEvent.getY());
} else if ((active == HORSCROLLBAR)) {
hsb.handleMouseEvent(mouseEvent.getID(),
mouseEvent.getModifiers(),
mouseEvent.getX(),
mouseEvent.getY()-(height-SCROLLBAR_WIDTH));
} else if (active == WINDOW) {
int i = y2index(mouseEvent.getY());
if (multipleSelections) {
// Multi-select only:
// If a selected item was pressed on and then dragged off
// of, cancel the pending deselect.
if (eventType == ItemEvent.DESELECTED) {
if (i != eventIndex) {
eventType = NONE;
eventIndex = -1;
}
}
}
else if (eventType == ItemEvent.SELECTED) {
// Single-select only:
// If an unselected item was pressed on, track the drag
// and select the item under the mouse
// See 6243382 for more information
trackMouseDraggedScroll(mouseEvent);
if (i >= 0 && !isSelected(i)) {
int oldSel = eventIndex;
selectItem(i);
eventIndex = i;
repaint(oldSel, eventIndex, PAINT_ITEMS);
}
}
// Restoring Windows behaviour
// We should update focus index after "mouse dragged" event
if (i >= 0) {
setFocusIndex(i);
repaint(PAINT_FOCUS);
}
}
}
}
/*
* Helper method for XListPeer with integrated vertical scrollbar.
* Start or stop vertical scrolling when mouse dragged in / out the area of the list if it's required
* Restoring Motif behavior
* See 6243382 for more information
*/
void trackMouseDraggedScroll(MouseEvent mouseEvent){
if (vsb.beforeThumb(mouseEvent.getX(), mouseEvent.getY())) {
vsb.setMode(AdjustmentEvent.UNIT_DECREMENT);
} else {
vsb.setMode(AdjustmentEvent.UNIT_INCREMENT);
}
if(mouseEvent.getY() < 0 || mouseEvent.getY() >= listHeight){
if (!mouseDraggedOutVertically){
mouseDraggedOutVertically = true;
vsb.startScrollingInstance();
}
}else{
if (mouseDraggedOutVertically){
mouseDraggedOutVertically = false;
vsb.stopScrollingInstance();
}
}
if (hsb.beforeThumb(mouseEvent.getX(), mouseEvent.getY())) {
hsb.setMode(AdjustmentEvent.UNIT_DECREMENT);
} else {
hsb.setMode(AdjustmentEvent.UNIT_INCREMENT);
}
if (mouseEvent.getX() < 0 || mouseEvent.getX() >= listWidth) {
if (!mouseDraggedOutHorizontally){
mouseDraggedOutHorizontally = true;
hsb.startScrollingInstance();
}
}else{
if (mouseDraggedOutHorizontally){
mouseDraggedOutHorizontally = false;
hsb.stopScrollingInstance();
}
}
}
/*
* Helper method for XListPeer with integrated vertical scrollbar.
* Stop vertical scrolling when mouse released in / out the area of the list if it's required
* Restoring Motif behavior
* see 6243382 for more information
*/
void trackMouseReleasedScroll(){
if (mouseDraggedOutVertically){
mouseDraggedOutVertically = false;
vsb.stopScrollingInstance();
}
if (mouseDraggedOutHorizontally){
mouseDraggedOutHorizontally = false;
hsb.stopScrollingInstance();
}
}
void handleJavaKeyEvent(KeyEvent e) {
switch(e.getID()) {
case KeyEvent.KEY_PRESSED:
if (!isMousePressed){
keyPressed(e);
}
break;
}
}
@SuppressWarnings("deprecation")
void keyPressed(KeyEvent e) {
int keyCode = e.getKeyCode();
if (log.isLoggable(PlatformLogger.Level.FINE)) {
log.fine(e.toString());
}
switch(keyCode) {
case KeyEvent.VK_UP:
case KeyEvent.VK_KP_UP: // TODO: I assume we also want this, too
if (getFocusIndex() > 0) {
setFocusIndex(getFocusIndex()-1);
repaint(PAINT_HIDEFOCUS);
// If single-select, select the item
if (!multipleSelections) {
selectItem(getFocusIndex());
postEvent(new ItemEvent((List)target,
ItemEvent.ITEM_STATE_CHANGED,
Integer.valueOf(getFocusIndex()),
ItemEvent.SELECTED));
}
if (isItemHidden(getFocusIndex())) {
makeVisible(getFocusIndex());
}
else {
repaint(PAINT_FOCUS);
}
}
break;
case KeyEvent.VK_DOWN:
case KeyEvent.VK_KP_DOWN: // TODO: I assume we also want this, too
if (getFocusIndex() < items.size() - 1) {
setFocusIndex(getFocusIndex()+1);
repaint(PAINT_HIDEFOCUS);
// If single-select, select the item
if (!multipleSelections) {
selectItem(getFocusIndex());
postEvent(new ItemEvent((List)target,
ItemEvent.ITEM_STATE_CHANGED,
Integer.valueOf(getFocusIndex()),
ItemEvent.SELECTED));
}
if (isItemHidden(getFocusIndex())) {
makeVisible(getFocusIndex());
}
else {
repaint(PAINT_FOCUS);
}
}
break;
case KeyEvent.VK_PAGE_UP: {
// Assumes that scrollbar does its own bounds-checking
int previousValue = vsb.getValue();
vsb.setValue(vsb.getValue() - vsb.getBlockIncrement());
int currentValue = vsb.getValue();
// 6190768 pressing pg-up on AWT multiple selection lists the items but no item event is triggered, on XToolkit
// Restoring Motif behavior
if (previousValue!=currentValue) {
setFocusIndex(Math.max(getFocusIndex()-itemsInWindow(), 0));
if (!multipleSelections){
selectItem(getFocusIndex());
postEvent(new ItemEvent((List)target,
ItemEvent.ITEM_STATE_CHANGED,
Integer.valueOf(getFocusIndex()),
ItemEvent.SELECTED));
}
}
repaint();
break;
}
case KeyEvent.VK_PAGE_DOWN: {
// Assumes that scrollbar does its own bounds-checking
int previousValue = vsb.getValue();
vsb.setValue(vsb.getValue() + vsb.getBlockIncrement());
int currentValue = vsb.getValue();
// 6190768 pressing pg-down on AWT multiple selection list selects the items but no item event is triggered, on XToolkit
// Restoring Motif behavior
if (previousValue!=currentValue) {
setFocusIndex(Math.min(getFocusIndex() + itemsInWindow(), items.size()-1));
if (!multipleSelections){
selectItem(getFocusIndex());
postEvent(new ItemEvent((List)target,
ItemEvent.ITEM_STATE_CHANGED,
Integer.valueOf(getFocusIndex()),
ItemEvent.SELECTED));
}
}
repaint();
break;
}
case KeyEvent.VK_LEFT:
case KeyEvent.VK_KP_LEFT:
if (hsbVis & hsb.getValue() > 0) {
hsb.setValue(hsb.getValue() - HORIZ_SCROLL_AMT);
repaint();
}
break;
case KeyEvent.VK_RIGHT:
case KeyEvent.VK_KP_RIGHT:
if (hsbVis) { // Should check if already at end
hsb.setValue(hsb.getValue() + HORIZ_SCROLL_AMT);
repaint();
}
break;
// 6190778 CTRL + HOME, CTRL + END keys do not work properly for list on XToolkit
// Restoring Motif behavior
case KeyEvent.VK_HOME:
if (!e.isControlDown() || ((List)target).getItemCount() <= 0)
break;
if (vsbVis) {
vsb.setValue(vsb.getMinimum());
}
setFocusIndex(0);
if (!multipleSelections) {
selectItem(getFocusIndex());
postEvent(new ItemEvent((List)target,
ItemEvent.ITEM_STATE_CHANGED,
Integer.valueOf(getFocusIndex()),
ItemEvent.SELECTED));
}
repaint();
break;
case KeyEvent.VK_END:
if (!e.isControlDown() || ((List)target).getItemCount() <= 0)
break;
if (vsbVis) {
vsb.setValue(vsb.getMaximum());
}
setFocusIndex(items.size()-1);
if (!multipleSelections) {
selectItem(getFocusIndex());
postEvent(new ItemEvent((List)target,
ItemEvent.ITEM_STATE_CHANGED,
Integer.valueOf(getFocusIndex()),
ItemEvent.SELECTED));
}
repaint();
break;
case KeyEvent.VK_SPACE:
// Fixed 6299853: XToolkit: Pressing space triggers ItemStateChanged event after List.removeAll called
// If getFocusIndex() is less than 0, the event will not be triggered when space pressed
if (getFocusIndex() < 0 || ((List)target).getItemCount() <= 0) {
break;
}
boolean isSelected = isSelected(getFocusIndex());
// Spacebar only deselects for multi-select Lists
if (multipleSelections && isSelected) {
deselectItem(getFocusIndex());
postEvent(new ItemEvent((List)target,
ItemEvent.ITEM_STATE_CHANGED,
Integer.valueOf(getFocusIndex()),
ItemEvent.DESELECTED));
}
else if (!isSelected) { // Note: this changes the Solaris/Linux
// behavior to match that of win32.
// That is, pressing space bar on a
// single-select list when the focused
// item is already selected does NOT
// send an ItemEvent.SELECTED event.
selectItem(getFocusIndex());
postEvent(new ItemEvent((List)target,
ItemEvent.ITEM_STATE_CHANGED,
Integer.valueOf(getFocusIndex()),
ItemEvent.SELECTED));
}
break;
case KeyEvent.VK_ENTER:
// It looks to me like there are bugs as well as inconsistencies
// in the way the Enter key is handled by both Solaris and Windows.
// So for now in XAWT, I'm going to simply go by what the List docs
// say: "AWT also generates an action event when the user presses
// the return key while an item in the list is selected."
if (selected.length > 0) {
postEvent(new ActionEvent((List)target,
ActionEvent.ACTION_PERFORMED,
items.elementAt(getFocusIndex()),
e.getWhen(),
e.getModifiers())); // ActionEvent doesn't have
// extended modifiers.
}
break;
}
}
/**
* return value from the scrollbar
*/
public void notifyValue(XScrollbar obj, int type, int v, boolean isAdjusting) {
if (log.isLoggable(PlatformLogger.Level.FINE)) {
log.fine("Notify value changed on " + obj + " to " + v);
}
int value = obj.getValue();
if (obj == vsb) {
scrollVertical(v - value);
// See 6243382 for more information
int oldSel = eventIndex;
int newSel = eventIndex+v-value;
if (mouseDraggedOutVertically && !isSelected(newSel)){
selectItem(newSel);
eventIndex = newSel;
repaint(oldSel, eventIndex, PAINT_ITEMS);
// Scrolling select() should also set the focus index
// Otherwise, the updating of the 'focusIndex' variable will be incorrect
// if user drag mouse out of the area of the list
setFocusIndex(newSel);