summaryrefslogtreecommitdiffstats
path: root/kdat/ktreeview.cpp
blob: c43cb3584759afb5b20c4da4f687701c337e8914 (plain)
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
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
/*
 * $Id$
 *
 * KTreeView implementation
 *
 * Copyright (C) 1997 Johannes Sixt
 *
 * based on KTreeList, which is
 * Copyright (C) 1996 Keith Brown and KtSoft
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2 of the License, or (at your
 * option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABLILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License for more details. You should have received a copy
 * of the GNU General Public License along with this program; if not, write
 * to the Free Software Foundation, Inc, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
 * USA.
 */

#include <ktreeview.h>
#include "ktreeview.moc"
#include <tqapplication.h>			/* used for TQApplication::closingDown() */
#include <tqkeycode.h>			/* used for keyboard interface */
#include <tqpainter.h>			/* used to paint items */
#include <tqscrollbar.h>
#include <tqstyle.h>
#include <assert.h>

/*
 * -------------------------------------------------------------------
 *
 * KTreeViewItem
 *
 * -------------------------------------------------------------------
 */

// constructor
KTreeViewItem::KTreeViewItem(const TQString& theText) :
	owner(0),
	numChildren(0),
	doExpandButton(true),
	expanded(false),
	delayedExpanding(false),
	doTree(true),
	doText(true),
	child(0),
	tqparent(0),
	sibling(0),
	deleteChildren(false)
{
    text = theText;
}

// constructor that takes a pixmap
KTreeViewItem::KTreeViewItem(const TQString& theText,
			     const TQPixmap& thePixmap) :
	owner(0),
	numChildren(0),
	doExpandButton(true),
	expanded(false),
	delayedExpanding(false),
	doTree(true),
	doText(true),
	child(0),
	tqparent(0),
	sibling(0),
	deleteChildren(false)
{
    text = theText;
    pixmap = thePixmap;
}

// destructor
KTreeViewItem::~KTreeViewItem()
{
    if (deleteChildren) {
	// remove the tqchildren
	KTreeViewItem* i = child;
	while (i) {
	    KTreeViewItem* d = i;
	    i = i->getSibling();
	    delete d;
	}
    }
}

// appends a direct child
void KTreeViewItem::appendChild(KTreeViewItem* newChild)
{
    newChild->tqparent = this;
    newChild->owner = owner;
    if (!getChild()) {
	child = newChild;
    }
    else {
	KTreeViewItem* lastChild = getChild();
	while (lastChild->hasSibling()) {
	    lastChild = lastChild->getSibling();
	}
	lastChild->sibling = newChild;
    }
    newChild->sibling = 0;
    numChildren++;
}

// returns the bounding rectangle of the item content (not including indent
// and branches) for hit testing
TQRect KTreeViewItem::boundingRect(int indent) const
{
    const TQFontMetrics& fm = owner->fontMetrics();
    int rectX = indent;
    int rectY = 1;
    int rectW = width(indent, fm) - rectX;
    int rectH = height(fm) - 2;
    return TQRect(rectX, rectY, rectW, rectH);
}

// returns the child item at the specified index
KTreeViewItem* KTreeViewItem::tqchildAt(int index) const
{
    if (!hasChild())
	return 0;
    KTreeViewItem* item = getChild();
    while (index > 0 && item != 0) {
	item = item->getSibling();
	index--;
    }
    return item;
}

// returns the number of tqchildren this item has
uint KTreeViewItem::childCount() const
{
    return numChildren;
}

/* returns the index of the given child item in this item's branch */
int KTreeViewItem::childIndex(KTreeViewItem* searched) const
{
    assert(searched != 0);
    int index = 0;
    KTreeViewItem* item = getChild();
    while (item != 0 && item != searched) {
	item = item->getSibling();
	index++;
    }
    return item == 0  ?  -1  :  index;
}

// indicates whether mouse press is in expand button
inline bool KTreeViewItem::expandButtonClicked(const TQPoint& coord) const
{
  return expandButton.tqcontains(coord);
}

bool KTreeViewItem::mousePressEvent( const TQPoint& )
{
    return FALSE;
}

// returns a pointer to first child item
KTreeViewItem* KTreeViewItem::getChild() const
{
    return child;
}

// returns the tqparent of this item
KTreeViewItem* KTreeViewItem::getParent() const
{
    return tqparent;
}

// returns reference to the item pixmap
const TQPixmap& KTreeViewItem::getPixmap() const
{
    return pixmap;
}

// returns the sibling below this item
KTreeViewItem* KTreeViewItem::getSibling() const
{
    return sibling;
}

// returns a pointer to the item text
const TQString& KTreeViewItem::getText() const
{
    return text;
}

// indicates whether this item has any tqchildren
bool KTreeViewItem::hasChild() const
{
    return child != 0;
}

// indicates whether this item has a tqparent
bool KTreeViewItem::hasParent() const
{
    return tqparent != 0;
}

// indicates whether this item has a sibling below it
bool KTreeViewItem::hasSibling() const
{
    return sibling != 0;
}

int KTreeViewItem::height() const
{
    assert(owner != 0);
    return height(owner->fontMetrics());
}

// returns the maximum height of text and pixmap including margins
// or -1 if item is empty -- SHOULD NEVER BE -1!
int KTreeViewItem::height(const TQFontMetrics& fm) const
{
    int maxHeight = pixmap.height();
    int textHeight = fm.ascent() + fm.leading();
    maxHeight = textHeight > maxHeight ? textHeight : maxHeight;
    return maxHeight == 0 ? -1 : maxHeight + 8;
}

// inserts child item at specified index in branch
void KTreeViewItem::insertChild(int index, KTreeViewItem* newChild)
{
    if (index < 0) {
	appendChild(newChild);
	return;
    }
    newChild->tqparent = this;
    newChild->owner = owner;
    if (index == 0) {
	newChild->sibling = getChild();
	child = newChild;
    }
    else {
	KTreeViewItem* prevItem = getChild();
	KTreeViewItem* nextItem = prevItem->getSibling();
	while (--index > 0 && nextItem) {
	    prevItem = nextItem;
	    nextItem = prevItem->getSibling();
	}
	prevItem->sibling = newChild;
	newChild->sibling = nextItem;
    }
    numChildren++;

    if ( owner ) {
        owner->updateVisibleItems();
        owner->update();
    }
}

// indicates whether this item is displayed expanded
// NOTE: a TRUE response does not necessarily indicate the item
// has any tqchildren
bool KTreeViewItem::isExpanded() const
{
    return expanded;
}

// returns true if all ancestors are expanded
bool KTreeViewItem::isVisible() const
{
    for (KTreeViewItem* p = getParent(); p != 0; p = p->getParent()) {
	if (!p->isExpanded())
	    return false;
    }
    return true;
}

// paint this item, including tree branches and expand button
void KTreeViewItem::paint(TQPainter* p, int indent, const TQColorGroup& cg,
			  bool highlighted) const
{
    assert(getParent() != 0);		/* can't paint root item */

    p->save();
    p->setPen(cg.text());
    p->setBackgroundColor(cg.base());

    int cellHeight = height(p->fontMetrics());

    if (doTree) {
	paintTree(p, indent, cellHeight);
    }

    /*
     * If this item has at least one child and expand button drawing is
     * enabled, set the rect for the expand button for later mouse press
     * bounds checking, and draw the button.
     */
    if (doExpandButton && (child || delayedExpanding)) {
	paintExpandButton(p, indent, cellHeight);
    }

    // now draw the item pixmap and text, if applicable
    int pixmapX = indent;
    int pixmapY = (cellHeight - pixmap.height()) / 2;
    p->drawPixmap(pixmapX, pixmapY, pixmap);

    if (doText) {
	paintText(p, indent, cellHeight, cg, highlighted);
    }
    p->restore();
}

void KTreeViewItem::paintExpandButton(TQPainter* p, int indent, int cellHeight) const
{
    int parentLeaderX = indent - (22 / 2);
    int cellCenterY = cellHeight / 2;

    expandButton.setRect(parentLeaderX - 4, cellCenterY - 4, 9, 9);
    p->setBrush(TQt::white);
    p->drawRect(expandButton);
    if (expanded) {
	p->drawLine(parentLeaderX - 2, cellCenterY,
		    parentLeaderX + 2, cellCenterY);
    } else {
	p->drawLine(parentLeaderX - 2, cellCenterY,
		    parentLeaderX + 2, cellCenterY);
	p->drawLine(parentLeaderX, cellCenterY - 2,
		    parentLeaderX, cellCenterY + 2);
    }
    p->setBrush(TQt::NoBrush);
}

// paint the highlight
void KTreeViewItem::paintHighlight(TQPainter* p, int indent, const TQColorGroup& tqcolorGroup,
				   bool hasFocus, TQt::GUIStyle style) const
{
    TQColor fc;
    if (style == TQt::WindowsStyle)
	fc = TQt::darkBlue;			/* hardcoded in TQt */
    else
	fc = tqcolorGroup.text();
    TQRect textRect = textBoundingRect(indent);
    int t,l,b,r;
    textRect.coords(&l, &t, &r, &b);
    p->fillRect(textRect, fc);		/* draw highlight background */
    if (hasFocus) {
	if(style == TQt::WindowsStyle) {	/* draw Windows style highlight */
	    textRect.setCoords(l - 1, t - 1, r + 1, b + 1);
	    p->setPen(TQPen(TQt::yellow, 0, TQt::DotLine));
	    p->setBackgroundColor(fc);
	    p->setBackgroundMode(Qt::OpaqueMode);
	    p->drawRect(textRect);
	    textRect.setCoords(l - 2, t - 2, r + 2, b + 2);
	    p->setPen(fc);
	    p->drawRect(textRect);
	}
	else {				/* draw Motif style highlight */
	    textRect.setCoords(l - 2, t - 2, r + 2, b + 2);
	    p->drawRect(textRect);
	}
    }
}

// draw the text, highlighted if requested
void KTreeViewItem::paintText(TQPainter* p, int indent, int cellHeight,
			      const TQColorGroup& cg, bool highlighted) const
{
    int textX = indent + pixmap.width() + 4;
    int textY = cellHeight - ((cellHeight - p->fontMetrics().ascent() -
			       p->fontMetrics().leading()) / 2);
    if (highlighted) {
	paintHighlight(p, indent, cg, owner->hasFocus(),
                       (TQt::GUIStyle)owner->tqstyle().tqstyleHint(TQStyle::SH_GUIStyle)); // TQt3 doesn't make this easy ;)
	p->setPen(cg.base());
	p->setBackgroundColor(cg.text());
    }
    else {
	p->setPen(cg.text());
	p->setBackgroundColor(cg.base());
    }
    p->drawText(textX, textY, text);
}

// paint the tree structure
void KTreeViewItem::paintTree(TQPainter* p, int indent, int cellHeight) const
{
    int parentLeaderX = indent - (22 / 2);
    int cellCenterY = cellHeight / 2;
    int cellBottomY = cellHeight - 1;
    int itemLeaderX = indent - 3;

    /*
     * If this is not the first item in the tree draw the line up
     * towards tqparent or sibling.
     */
    if (tqparent->tqparent != 0 || tqparent->getChild() != this)
	p->drawLine(parentLeaderX, 0, parentLeaderX, cellCenterY);

    // draw the line down towards sibling
    if (sibling)
	p->drawLine(parentLeaderX, cellCenterY, parentLeaderX, cellBottomY);

    /*
     * If this item has tqchildren or siblings in the tree or is a child of
     * an item other than the root item then draw the little line from the
     * item out to the left.
     */
    if (sibling || (doExpandButton && (child || delayedExpanding)) ||
	tqparent->tqparent != 0 ||
	/*
	 * The following handles the case of an item at the end of the
	 * topmost level which doesn't have tqchildren.
	 */
	tqparent->getChild() != this)
    {
	p->drawLine(parentLeaderX, cellCenterY, itemLeaderX, cellCenterY);
    }

    /*
     * If there are siblings of ancestors below, draw our portion of the
     * branches that extend through this cell.
     */
    KTreeViewItem* prevRoot = tqparent;
    while (prevRoot->getParent() != 0) {  /* while not root item */
	if (prevRoot->hasSibling()) {
	    int sibLeaderX = owner->indentation(prevRoot) - (22 / 2);
	    p->drawLine(sibLeaderX, 0, sibLeaderX, cellBottomY);
	}
	prevRoot = prevRoot->getParent();
    }
}

// removes the given (direct) child from the branch
bool KTreeViewItem::removeChild(KTreeViewItem* theChild)
{
    // search item in list of tqchildren
    KTreeViewItem* prevItem = 0;
    KTreeViewItem* toRemove = getChild();
    while (toRemove && toRemove != theChild) {
	prevItem = toRemove;
	toRemove = toRemove->getSibling();
    }

    if (toRemove) {
	// found it!
	if (prevItem == 0) {
	    child = toRemove->getSibling();
	} else {
	    prevItem->sibling = toRemove->getSibling();
	}
	numChildren--;
	toRemove->owner = 0;
    }
    assert((numChildren == 0) == (child == 0));

    if ( owner ) {
        owner->updateVisibleItems();
        owner->update();
    }

    return toRemove != 0;
}

// sets the delayed-expanding flag
void KTreeViewItem::setDelayedExpanding(bool flag)
{
    delayedExpanding = flag;
}

// tells the item whether it shall delete child items
void KTreeViewItem::setDeleteChildren(bool flag)
{
    deleteChildren = flag;
}

// sets the draw expand button flag of this item
void KTreeViewItem::setDrawExpandButton(bool doit)
{
    doExpandButton = doit;
}

// sets the draw text flag of this item
void KTreeViewItem::setDrawText(bool doit)
{
    doText = doit;
}

// sets the draw tree branch flag of this item
void KTreeViewItem::setDrawTree(bool doit)
{
    doTree = doit;
}

// sets the expanded flag of this item
void KTreeViewItem::setExpanded(bool is)
{
    expanded = is;
    if ( owner ) {
        owner->updateVisibleItems();
        owner->update();
    }
}

// sets the item pixmap to the given pixmap
void KTreeViewItem::setPixmap(const TQPixmap& pm)
{
    pixmap = pm;
    if ( owner ) {
        owner->updateVisibleItems();
        owner->update();
    }
}

// sets the item text to the given string
void KTreeViewItem::setText(const TQString& t)
{
    text = t;
    if ( owner ) {
        owner->updateVisibleItems();
        owner->update();
    }
}

// counts the child items and stores the result in numChildren
void KTreeViewItem::synchNumChildren()
{
    numChildren = 0;
    KTreeViewItem* item = getChild();
    while (item != 0) {
	numChildren++;
	item = item->getSibling();
    }
}

/*
 * returns the bounding rect of the item text in cell coordinates couldn't
 * get TQFontMetrics::boundingRect() to work right so I made my own
 */
TQRect KTreeViewItem::textBoundingRect(int indent) const
{
    const TQFontMetrics& fm = owner->fontMetrics();
    int cellHeight = height(fm);
    int rectX = indent + pixmap.width() + 3;
    int rectY = (cellHeight - fm.ascent() - fm.leading()) / 2 + 2;
    int rectW = fm.width(text) + 1;
    int rectH = fm.ascent() + fm.leading();
    return TQRect(rectX, rectY, rectW, rectH);
}

// returns the total width of text and pixmap, including margins, spacing
// and indent, or -1 if empty -- SHOULD NEVER BE -1!
int KTreeViewItem::width(int indent) const
{
    return width(indent, owner->fontMetrics());
}

int KTreeViewItem::width(int indent, const TQFontMetrics& fm) const
{
    int maxWidth = pixmap.width();
    maxWidth += (4 + fm.width(text));
    return maxWidth == 0  ?  -1  :  indent + maxWidth + 3;
}


/*
 * -------------------------------------------------------------------
 *
 * KTreeView
 *
 * -------------------------------------------------------------------
 */

// constructor
KTreeView::KTreeView(TQWidget *tqparent,
		     const char *name,
		     WFlags f) :
	TQGridView(tqparent, name, f),
	clearing(false),
	current(-1),
	drawExpandButton(true),
	drawTree(true),
	expansion(0),
	goingDown(false),
	itemIndent(22),
	showText(true),
	itemCapacity(500),
	visibleItems(0),
	rubberband_mode(false)
{
    setCellHeight(0);
//    setCellWidth(0);
    setNumRows(0);
    setNumCols(1);
    setVScrollBarMode(Auto);
    setHScrollBarMode(Auto);
    //switch(style().guiStyle()) {
    //case WindowsStyle:
    //case MotifStyle:
	setFrameStyle(TQFrame::WinPanel | TQFrame::Sunken);
	setBackgroundColor(tqcolorGroup().base());
	//break;
    /*default:
	setFrameStyle(TQFrame::Panel | TQFrame::Plain);
	setLineWidth(1);
    }*/
    // setAcceptFocus(true);
    treeRoot = new KTreeViewItem;
    treeRoot->setExpanded(true);
    treeRoot->owner = this;

    visibleItems = new KTreeViewItem*[itemCapacity];
    // clear those pointers
    for (int j = itemCapacity-1; j >= 0; j--) {
	visibleItems[j] = 0;
    }
}

// destructor
KTreeView::~KTreeView()
{
    goingDown = true;
    clear();
    delete[] visibleItems;
    delete treeRoot;
}

// appends a child to the item at the given index with the given text
// and pixmap
void KTreeView::appendChildItem(const TQString & theText, const TQPixmap& thePixmap,
				int index)
{
    KTreeViewItem* item = new KTreeViewItem(theText, thePixmap);
    item->setDeleteChildren(true);
    appendChildItem(item, index);
}

// appends a child to the item at the end of the given path with
// the given text and pixmap
void KTreeView::appendChildItem(const TQString & theText, const TQPixmap& thePixmap,
				const KPath& thePath)
{
    KTreeViewItem* item = new KTreeViewItem(theText, thePixmap);
    item->setDeleteChildren(true);
    appendChildItem(item, thePath);
}

// appends the given item to the tqchildren of the item at the given index
void KTreeView::appendChildItem(KTreeViewItem* newItem, int index)
{
    /* find tqparent item and append new item to tqparent's sub tree */
    KTreeViewItem* parentItem = itemAt(index);
    if (!parentItem)
	return;
    appendChildItem(parentItem, newItem);
}

// appends the given item to the tqchildren of the item at the end of the
// given path
void KTreeView::appendChildItem(KTreeViewItem* newItem, const KPath& thePath)
{
    /* find tqparent item and append new item to tqparent's sub tree */
    KTreeViewItem* parentItem = itemAt(thePath);
    if (!parentItem)
	return;
    appendChildItem(parentItem, newItem);
}

// indicates whether horizontal scrollbar appears only when needed
bool KTreeView::autoBottomScrollBar() const
{
  return (hScrollBarMode() == Auto); 
}

// indicates whether vertical scrollbar appears only when needed
bool KTreeView::autoScrollBar() const
{
  return (vScrollBarMode() == Auto);
}

// indicates whether display updates automatically on changes
bool KTreeView::autoUpdate() const
{
  return isUpdatesEnabled();
}

// indicates whether horizontal scrollbar is present
bool KTreeView::bottomScrollBar() const
{
  return !(horizontalScrollBar()->isHidden());
}

// find item at specified index and change pixmap and/or text
void KTreeView::changeItem(const TQString & newText,
			      const TQPixmap *newPixmap,
			      int index)
{
  KTreeViewItem *item = itemAt(index);
  if(item)
    changeItem(item, index, newText, newPixmap);
}

// find item at end of specified path, and change pixmap and/or text
void KTreeView::changeItem(const TQString & newText,
			   const TQPixmap* newPixmap,
			   const KPath& thePath)
{
    KTreeViewItem* item = itemAt(thePath);
    if (item) {
	int index = itemRow(item);
	changeItem(item, index, newText, newPixmap);
    }
}

// clear all items from list and erase display
void KTreeView::clear()
{
    setCurrentItem(-1);

    /* somewhat of a hack for takeItem so it doesn't update the current item... */
	clearing = TRUE;

	bool autoU = autoUpdate();
	setAutoUpdate(FALSE);
	TQPtrStack<KTreeViewItem> stack;
	stack.push(treeRoot);
	while(!stack.isEmpty()) {
		KTreeViewItem *item = stack.pop();
		if(item->hasChild()) {
			stack.push(item);
			stack.push(item->getChild());
		}
		else if(item->hasSibling()) {
			stack.push(item);
			stack.push(item->getSibling());
		}
		else if(item->getParent() != 0) {
			takeItem(item);
			delete item;
		}
	}
	clearing = FALSE;
  if(goingDown || TQApplication::closingDown())
    return;
  if(autoU && isVisible())
    tqrepaint();
  setAutoUpdate(autoU);
}

// return a count of all the items in the tree, whether visible or not
uint KTreeView::count()
{
  int total = 0;
  forEveryItem(&KTreeView::countItem, (void *)&total);
  return total;
}

// returns the index of the current (highlighted) item
int KTreeView::currentItem() const
{
  return current;
}

// only collapses the item if it is expanded. If not expanded, or
// index invalid, does nothing
void KTreeView::collapseItem(int index)
{
  KTreeViewItem *item = itemAt(index);
  if(item && item->isExpanded())
    expandOrCollapse(item);
}

// only expands the item if it is collapsed. If not collapsed, or
// index invalid, does nothing
void KTreeView::expandItem(int index)
{
  KTreeViewItem *item = itemAt(index);
  if(item && !item->isExpanded())
    expandOrCollapse(item);
}

// returns the depth the tree is automatically expanded to when
// items are added
int KTreeView::expandLevel() const
{
  return expansion;
}

// expands or collapses the subtree rooted at the given item,
// as approptiate
// if item has no tqchildren, does nothing
void KTreeView::expandOrCollapseItem(int index)
{
  KTreeViewItem *item = itemAt(index);
  if(item)
    expandOrCollapse(item);
}

// visits every item in the tree, visible or not and applies
// the user supplied function with the item and user data passed as parameters
// if user supplied function returns true, traversal ends and function returns
bool KTreeView::forEveryItem(KForEvery func, void* user, KTreeViewItem* item)
{
    if (item == 0) {
	item = treeRoot;
    }
    assert(item->owner == this);
    item = item->getChild();

    while (item != 0) {
	// visit the siblings
	if ((*func)(item, user)) {
	    return true;
	}
	// visit the tqchildren (recursively)
	if (item->hasChild()) {
	    if (forEveryItem(func, user, item))
		return true;
	}
	item = item->getSibling();
    }
    return false;
}

// visits every visible item in the tree in order and applies the
// user supplied function with the item and user data passed as parameters
// if user supplied function returns TRUE, traversal ends and function
// returns
bool KTreeView::forEveryVisibleItem(KForEvery func, void *user,
				    KTreeViewItem* item)
{
    if (item == 0) {
	item = treeRoot;
    } else {
	// tqchildren are invisible (hence, nothing to do)
	// if item is invisible or collapsed
	if (!item->isVisible() || !item->isExpanded()) {
	    return false;
	}
    }
    assert(item->owner == this);
    item = item->getChild();

    while (item != 0) {
	// visit the siblings
	if ((*func)(item, user)) {
	    return true;
	}
	// visit the tqchildren (recursively)
	if (item->hasChild() && item->isExpanded()) {
	    if (forEveryVisibleItem(func, user, item))
		return true;
	}
	item = item->getSibling();
    }
    return false;
}

// returns a pointer to the KTreeViewItem at the current index
// or 0 if no current item
KTreeViewItem *KTreeView::getCurrentItem()
{
  if(current == -1) return 0;
  return itemAt(current);
}

// returns the current indent spacing
int KTreeView::indentSpacing()
{
    return itemIndent;
}

// inserts a new item with the specified text and pixmap before
// or after the item at the given index, depending on the value
// of prefix
// if index is negative, appends item to tree at root level
bool KTreeView::insertItem(const TQString & theText, const TQPixmap& thePixmap,
			   int row, bool prefix)
{
    KTreeViewItem* refItem = itemAt(row);

    KTreeViewItem* item = new KTreeViewItem(theText, thePixmap);
    item->setDeleteChildren(true);

    bool success = insertItem(refItem, item, prefix);
    if (!success)
	delete item;
    return success;
}

// inserts a new item with the specified text and pixmap before
// or after the item at the end of the given path, depending on the value
// of prefix
bool KTreeView::insertItem(const TQString & theText, const TQPixmap& thePixmap,
			   const KPath& path, bool prefix)
{
    KTreeViewItem* refItem = itemAt(path);

    KTreeViewItem* item = new KTreeViewItem(theText, thePixmap);
    item->setDeleteChildren(true);

    bool success = insertItem(refItem, item, prefix);
    if (!success)
	delete item;
    return success;
}

// inserts the given item or derived object into the tree before
// or after the item at the given index, depending on the value
// of prefix
// if index is negative, appends item to tree at root level
bool KTreeView::insertItem(KTreeViewItem* newItem,
			   int index, bool prefix)
{
    // find the item currently at the index, if there is one
    KTreeViewItem* refItem = itemAt(index);

    // insert new item at the appropriate place
    return insertItem(refItem, newItem, prefix);
}

// inserts the given item or derived object into the tree before
// or after the item at the end of the given path, depending on the value
// of prefix
bool KTreeView::insertItem(KTreeViewItem* newItem,
			   const KPath& thePath, bool prefix)
{
    // find the item currently at the end of the path, if there is one
    KTreeViewItem* refItem = itemAt(thePath);

    // insert new item at appropriate place
    return insertItem(refItem, newItem, prefix);
}

/*
 * returns pointer to KTreeViewItem at the specifed row or 0 if row is out
 * of limits.
 */
KTreeViewItem* KTreeView::itemAt(int row)
{
    if (row < 0 || row >= numRows()) {
	return 0;
    }
    else {
	// lookup the item in the list of visible items
	assert(row < itemCapacity);
	KTreeViewItem* i = visibleItems[row];
	assert(i != 0);
	return i;
    }
}

// returns pointer to KTreeViewItem at the end of the
// path or 0 if not found
KTreeViewItem* KTreeView::itemAt(const KPath& path)
{
    if (path.isEmpty())
	return 0;

    // need a copy of the path because recursiveFind will destroy it
    KPath pathCopy;
    pathCopy.setAutoDelete(false);
    pathCopy = path;

    return recursiveFind(pathCopy);
}

// computes the path of the item at the specified index
// if index is invalid, nothing is done.
void KTreeView::itemPath(int row, KPath& path)
{
    KTreeViewItem* item = itemAt(row);
    if (item != 0) {
	itemPath(item, path);
    }
}

// returns the row in the visible tree of the given item or
// -1 if not found
int KTreeView::itemRow(KTreeViewItem* item)
{
    if (item->owner == this) {
	// search in list of visible items
	for (int i = numRows()-1; i >= 0; i--) {
	    if (visibleItems[i] == item) {
		return i;
	    }
	}
    }
    // not found
    return -1;
}

/*
 * move the subtree at the specified index up one branch level (make root
 * item a sibling of its current tqparent)
 */
void KTreeView::join(int index)
{
  KTreeViewItem *item = itemAt(index);
  if(item)
    join(item);
}

/*
 * move the subtree at the specified index up one branch level (make root
 * item a sibling of it's current tqparent)
 */
void KTreeView::join(const KPath& path)
{
    KTreeViewItem *item = itemAt(path);
    if (item)
	join(item);
}

/* move item at specified index one slot down in its tqparent's sub tree */
void KTreeView::lowerItem(int index)
{
  KTreeViewItem *item = itemAt(index);
  if(item)
    lowerItem(item);
}

/* move item at specified path one slot down in its tqparent's sub tree */
void KTreeView::lowerItem(const KPath& path)
{
    KTreeViewItem* item = itemAt(path);
    if (item)
	lowerItem(item);
}

/* move item at specified index one slot up in its tqparent's sub tree */
void KTreeView::raiseItem(int index)
{
  KTreeViewItem* item = itemAt(index);
    if (item)
	raiseItem(item);
}

/* move item at specified path one slot up in its tqparent's sub tree */
void KTreeView::raiseItem(const KPath& path)
{
    KTreeViewItem* item = itemAt(path);
    if (item)
	raiseItem(item);
}

// remove the item at the specified index and delete it
void KTreeView::removeItem(int index)
{
  KTreeViewItem *item = itemAt(index);
  if(item) {
    takeItem(item);
    delete item;
  }
}

// remove the item at the end of the specified path and delete it
void KTreeView::removeItem(const KPath& thePath)
{
    KTreeViewItem* item = itemAt(thePath);
    if (item) {
	takeItem(item);
	delete item;
    }
}

// indicates whether vertical scrollbar is present
bool KTreeView::scrollBar() const
{
  return !(verticalScrollBar()->isHidden());
}

// enables/disables auto update of display
void KTreeView::setAutoUpdate(bool enable)
{
  setUpdatesEnabled(enable);
}

// enables/disables horizontal scrollbar
void KTreeView::setBottomScrollBar(bool enable)
{
  setHScrollBarMode(enable ? AlwaysOn : AlwaysOff);
}

// sets the current item and hightlights it, emitting signals
void KTreeView::setCurrentItem(int row)
{
    if (row == current)
	return;
    int numVisible = numRows();
    if (row > numVisible) {
        emit highlighted( current );
	return;
    }
    int oldCurrent = current;
    current = row;
    if (oldCurrent < numVisible)
	updateCell(oldCurrent, 0);
    if (current > -1) {
	updateCell(current, 0);
    }

    emit highlighted( current );
}

// enables/disables drawing of expand button
void KTreeView::setExpandButtonDrawing(bool enable)
{
  if(drawExpandButton == enable)
    return;
  drawExpandButton = enable;
  forEveryItem(&KTreeView::setItemExpandButtonDrawing, 0);
  if(autoUpdate() && isVisible())
    tqrepaint();
}

// sets depth to which subtrees are automatically expanded, and
// redraws tree if auto update enabled
void KTreeView::setExpandLevel(int level)
{
  if(expansion == level)
    return;
  expansion = level;
  KTreeViewItem *item = getCurrentItem();
  forEveryItem(&KTreeView::setItemExpanded, 0);
  while(item) {
    if(item->getParent()->isExpanded())
      break;
    item = item->getParent();
  }
  setCurrentItem(itemRow(item));
  if(autoUpdate() && isVisible())
    tqrepaint();
}

// sets the indent margin for all branches and repaints if auto update enabled
void KTreeView::setIndentSpacing(int spacing)
{
    if (itemIndent == spacing)
	return;
    itemIndent = spacing;
    updateCellWidth();
    if (autoUpdate() && isVisible())
	tqrepaint();
}

// enables/disables vertical scrollbar
void KTreeView::setScrollBar(bool enable)
{
  setVScrollBarMode(enable? AlwaysOn : AlwaysOff );
}

// enables/disables display of item text (keys)
void KTreeView::setShowItemText(bool enable)
{
  if(showText == enable)
    return;
  showText = enable;
  forEveryItem(&KTreeView::setItemShowText, 0);
  if(autoUpdate() && isVisible())
    tqrepaint();
}

// indicates whether vertical scrolling is by pixel or row
void KTreeView::setSmoothScrolling(bool enable)
{
  verticalScrollBar()->setLineStep(enable ? 1 : cellHeight());
}

// enables/disables tree branch drawing
void KTreeView::setTreeDrawing(bool enable)
{
  if(drawTree == enable)
    return;
  drawTree = enable;
  forEveryItem(&KTreeView::setItemTreeDrawing, 0);
  if(autoUpdate() && isVisible())
    tqrepaint();
}

// indicates whether item text keys are displayed
bool KTreeView::showItemText() const
{
  return showText;
}

// indicates whether scrolling is by pixel or row
bool KTreeView::smoothScrolling() const
{
  return (verticalScrollBar()->lineStep() == 1);
}

// indents the item at the given index, splitting the tree into
// a new branch
void KTreeView::split(int index)
{
  KTreeViewItem *item = itemAt(index);
  if(item)
    split(item);
}

// indents the item at the given path, splitting the tree into
// a new branch
void KTreeView::split(const KPath& path)
{
    KTreeViewItem* item = itemAt(path);
    if (item)
	split(item);
}

// removes item at specified index from tree but does not delete it
// returns pointer to the item or 0 if not succesful
KTreeViewItem *KTreeView::takeItem(int index)
{
  KTreeViewItem *item = itemAt(index);
  if(item)
    takeItem(item);
  return item;
}

// removes item at specified path from tree but does not delete it
// returns pointer to the item or 0 if not successful
KTreeViewItem* KTreeView::takeItem(const KPath& path)
{
    KTreeViewItem* item = itemAt(path);
    if (item)
	takeItem(item);
    return item;
}

// indicates whether tree branches are drawn
bool KTreeView::treeDrawing() const
{
  return drawTree;
}


// appends a child to the specified tqparent item (note: a child, not a sibling, is added!)
void KTreeView::appendChildItem(KTreeViewItem* theParent,
				KTreeViewItem* newItem)
{
    theParent->appendChild(newItem);

    // set item state
    newItem->setDrawExpandButton(drawExpandButton);
    newItem->setDrawTree(drawTree);
    newItem->setDrawText(showText);
    if (level(newItem) < expansion) {
	newItem->setExpanded(true);
    }

    // fix up branch levels of any tqchildren that the new item may already have
    if(newItem->hasChild()) {
	fixChildren(newItem);
    }

    // if necessary, adjust cell width, number of rows and tqrepaint
    if (newItem->isVisible() || theParent->childCount() == 1) {
	bool autoU = autoUpdate();
	setAutoUpdate(false);
	updateVisibleItems();
	if(autoU && isVisible())
	    tqrepaint();
	setAutoUpdate(autoU);
    }
}

// changes the given item with the new text and/or pixmap
void KTreeView::changeItem(KTreeViewItem* toChange, int itemRow,
			   const TQString & newText, const TQPixmap* newPixmap)
{
    int indent = indentation(toChange);
    int oldWidth = toChange->width(indent);
    if(!newText.isNull())
	toChange->setText(newText);
    if (newPixmap)
	toChange->setPixmap(*newPixmap);
    if(oldWidth != toChange->width(indent))
	updateCellWidth();
    if(itemRow == -1)
	return;
    if(autoUpdate())
	updateCell(itemRow, 0);
}

// collapses the subtree at the specified item
void KTreeView::collapseSubTree(KTreeViewItem* subRoot)
{
    assert(subRoot->owner == this);

    // must move the current item if it is visible
    KTreeViewItem* cur = current >= 0  ?  itemAt(current)  :  0;

    subRoot->setExpanded(false);
    if (subRoot->isVisible()) {
	updateVisibleItems();
	// re-seat current item
	if (cur != 0) {
	    setCurrentItem(itemRow(cur));
	}
    }
    // roland
    tqrepaint();
    setAutoUpdate(TRUE);
    // roland
}

// used by count() with forEach() function to count total number
// of items in the tree
bool KTreeView::countItem(KTreeViewItem*, void* total)
{
    int* t = static_cast<int*>(total);
    (*t)++;
    return false;
}

// if item is expanded, collapses it or vice-versa
void KTreeView::expandOrCollapse(KTreeViewItem* tqparent)
{
    bool autoU = autoUpdate();
    setAutoUpdate(false);
    int parentIndex = itemRow(tqparent);
    if (tqparent->isExpanded()) {
	collapseSubTree(tqparent);
    emit collapsed(parentIndex);
    }
    else {
	expandSubTree(tqparent);
	emit expanded(parentIndex);
    }
    if (autoU && isVisible())
	tqrepaint();
    setAutoUpdate(autoU);
}

// expands the subtree at the given item
void KTreeView::expandSubTree(KTreeViewItem* subRoot)
{
    assert(subRoot->owner == this);

    // must move the current item if it is visible
    KTreeViewItem* cur = current >= 0  ?  itemAt(current)  :  0;

    bool allow = true;

    if (subRoot->delayedExpanding) {
	emit expanding(subRoot, allow);
    }
    if (!allow)
	return;

    subRoot->setExpanded(true);

    if (subRoot->isVisible()) {
	updateVisibleItems();
	// re-seat current item
	if (cur != 0) {
	    setCurrentItem(itemRow(cur));
	}
    }
    // roland
    tqrepaint();
    setAutoUpdate(TRUE);
    // roland

}

// fix up branch levels out of whack from split/join operations on the tree
void KTreeView::fixChildren(KTreeViewItem *parentItem)
{
    KTreeViewItem* childItem = 0;
    KTreeViewItem* siblingItem = 0;
//    int childBranch = parentItem->getBranch() + 1;
    if(parentItem->hasChild()) {
	childItem = parentItem->getChild();
//	childItem->setBranch(childBranch);
	childItem->owner = parentItem->owner;
	fixChildren(childItem);
    }
    while(childItem && childItem->hasSibling()) {
	siblingItem = childItem->getSibling();
//	siblingItem->setBranch(childBranch);
	siblingItem->owner = parentItem->owner;
	fixChildren(siblingItem);
	childItem = siblingItem;
    }
}

// handles TQFocusEvent processing by setting current item to top
// row if there is no current item, and updates cell to add or
// delete the focus rectangle on the highlight bar
void KTreeView::focusInEvent(TQFocusEvent *)
{
  if(current < 0 && numRows() > 0)
    setCurrentItem(rowAt(contentsY()));
  updateCell(current, 0);
}

// visits every item in the tree, visible or not and applies the user
// supplied member function with the item and user data passed as parameters
// if the user supplied member function returns TRUE, traversal
// ends and the function returns
void KTreeView::forEveryItem(KForEveryM func,
			   void *user)
{
  KTreeViewItem *item = treeRoot->getChild();
  TQPtrStack<KTreeViewItem> stack;
  while(item) {
    stack.push(item);
    while(!stack.isEmpty()) {
      KTreeViewItem *poppedItem = stack.pop();
      if((this->*func)(poppedItem, user))
	return;
      if(poppedItem->hasChild()) {
	KTreeViewItem *childItem = poppedItem->getChild();
	while(childItem) {
	  stack.push(childItem);
	  childItem = childItem->getSibling();
	}
      }
    }
    item = item->getSibling();
  }
}

// visits every visible item in the tree in order and applies the user
// supplied member function with the item and user data passed as parameters
// if user supplied function returns TRUE, traversal ends and function
// returns
void KTreeView::forEveryVisibleItem(KForEveryM func,
				       void *user)
{
  TQPtrStack<KTreeViewItem> stack;
  KTreeViewItem *item = treeRoot->getChild();
  do {
    while(item) {
      if((this->*func)(item, user)) return;
      if(item->hasChild() && item->isExpanded()) {
        stack.push(item);
        item = item->getChild();
      }
      else
        item = item->getSibling();
    }
    if(stack.isEmpty())
      break;
    item = stack.pop()->getSibling();
  } while(TRUE);
}

// called by updateCellWidth() for each item in the visible list
bool KTreeView::getMaxItemWidth(KTreeViewItem *item, void *user)
{
    int indent = indentation(item);
    int* maxW = static_cast<int*>(user);
    int w = item->width(indent);
    if (w > *maxW)
	*maxW = w;
    return false;
}

int KTreeView::indentation(KTreeViewItem* item) const
{
    return level(item) * itemIndent + itemIndent + 3;
}

// inserts the new item before or after the reference item, depending
// on the value of prefix
bool KTreeView::insertItem(KTreeViewItem* referenceItem,
			   KTreeViewItem* newItem,
			   bool prefix)
{
    assert(newItem != 0);
    assert(referenceItem == 0 || referenceItem->owner == this);

    /* set the new item's state */
    newItem->setDrawExpandButton(drawExpandButton);
    newItem->setDrawTree(drawTree);
    newItem->setDrawText(showText);
    if (cellHeight() == 0)
    {
       setCellHeight(newItem->height(fontMetrics()));
    }
    KTreeViewItem* parentItem;
    if (referenceItem) {
	parentItem = referenceItem->getParent();
	int insertIndex = parentItem->childIndex(referenceItem);
	if (!prefix)
	    insertIndex++;
	parentItem->insertChild(insertIndex, newItem);
    }
    else {
	// no reference item, append at end of visible tree
	// need to tqrepaint
	parentItem = treeRoot;
	parentItem->appendChild(newItem);
    }

    // set item expansion
    if (level(newItem) < expansion)
	newItem->setExpanded(true);

    // fix up branch levels of any tqchildren
    if (newItem->hasChild())
	fixChildren(newItem);

    // if tqrepaint necessary, do it if visible and auto update
    // enabled
    if (newItem->isVisible() || parentItem->childCount() == 1) {
	bool autoU = autoUpdate();
	setAutoUpdate(FALSE);
	updateVisibleItems();
	if(autoU && isVisible())
	    tqrepaint();
	setAutoUpdate(autoU);
    }
    return true;
}

/*
 * returns pointer to item's path
 */
void KTreeView::itemPath(KTreeViewItem* item, KPath& path) const
{
    assert(item != 0);
    assert(item->owner == this);
    if (item != treeRoot) {
	itemPath(item->getParent(), path);
	path.push(new TQString(item->getText()));
    }
}

/*
 * joins the item's branch into the tree, making the item a sibling of its
 * tqparent
 */
void KTreeView::join(KTreeViewItem *item)
{
  KTreeViewItem *itemParent = item->getParent();
  if(itemParent->hasParent()) {
    bool autoU = autoUpdate();
    setAutoUpdate(FALSE);
    takeItem(item);
    insertItem(itemParent, item, FALSE);
    if(autoU && isVisible())
      tqrepaint();
    setAutoUpdate(autoU);
  }
}

// handles keyboard interface to tree list
void KTreeView::keyPressEvent(TQKeyEvent *e)
{
  if(numRows() == 0)

    // nothing to be done

    return;
  if(currentItem() < 0)

    // if no current item, make the top item current

    setCurrentItem(rowAt(contentsY()));
  int pageSize, delta;
  switch(e->key()) {
    case Key_Up:

      // make previous item current, scroll up if necessary

      if(currentItem() > 0) {
	setCurrentItem(currentItem() - 1);
        ensureCellVisible(currentItem(), 0);
      }
      break;
    case Key_Down:

      // make next item current, scroll down if necessary

      if (currentItem() < numRows() - 1) {
	setCurrentItem(currentItem() + 1);
        ensureCellVisible(currentItem(), 0);
      }
      break;
    case Key_Next:

      // move highlight one page down and scroll down

      delta = TQMAX(1, visibleHeight() / cellHeight());
      setCurrentItem(TQMIN(currentItem() + delta, numRows() - 1));
      ensureCellVisible(currentItem(), 0);
      break;
    case Key_Prior:

      // move highlight one page up and scroll up

      delta = TQMAX(1, visibleHeight() / cellHeight());
      setCurrentItem(TQMAX(currentItem() - delta, 0));
      ensureCellVisible(currentItem(), 0);
      break;
    case Key_Plus:

      // if current item has subtree and is collapsed, expand it

      if(currentItem() >= 0)
	expandItem(currentItem());
      break;
    case Key_Minus:

      // if current item has subtree and is expanded, collapse it

      if(currentItem() >= 0)
	collapseItem(currentItem());
      break;
    case Key_Return:
    case Key_Enter:

      // select the current item

      if(currentItem() >= 0)
	emit selected(currentItem());
      break;
    default:
      break;
  }
}

int KTreeView::level(KTreeViewItem* item) const
{
    assert(item != 0);
    assert(item->owner == this);
    assert(item != treeRoot);
    int l = 0;
    item = item->tqparent->tqparent;	/* since item != treeRoot, there is a tqparent */
    while (item != 0) {
	item = item->tqparent;
	l++;
    }
    return l;
}

/* move specified item down one slot in tqparent's subtree */
void KTreeView::lowerItem(KTreeViewItem *item)
{
  KTreeViewItem *itemParent = item->getParent();
  uint itemChildIndex = itemParent->childIndex(item);
  if(itemChildIndex < itemParent->childCount() - 1) {
    bool autoU = autoUpdate();
    setAutoUpdate(FALSE);
    takeItem(item);
    insertItem(itemParent->tqchildAt(itemChildIndex), item, FALSE);
    if(autoU && isVisible())
      tqrepaint();
    setAutoUpdate(autoU);
  }
}

// handle mouse double click events by selecting the clicked item
// and emitting the signal
void KTreeView::mouseDoubleClickEvent(TQMouseEvent *e)
{
  // find out which row has been clicked

  TQPoint mouseCoord = viewportToContents(e->pos());
  int itemClicked = rowAt(mouseCoord.y());

  // if a valid row was not clicked, do nothing

  if(itemClicked == -1)
    return;

  KTreeViewItem *item = itemAt(itemClicked);
  if(!item) return;

  // translate mouse coord to cell coord

  int cellY = cellHeight()*itemClicked;
  int cellX = 0;
  TQPoint cellCoord(mouseCoord.x() - cellX, mouseCoord.y() - cellY);

  // hit test item
  int indent = indentation(item);
  if(item->boundingRect(indent).tqcontains(cellCoord))
    emit selected(itemClicked);
}

// handle mouse movement events
void KTreeView::mouseMoveEvent(TQMouseEvent *e)
{
  // in rubberband_mode we actually scroll the window now
  if (rubberband_mode)
	{
	  move_rubberband(e->pos());
	}
}


// handle single mouse presses
void KTreeView::mousePressEvent(TQMouseEvent *e)
{
    // first: check which button was pressed

    if (e->button() == Qt::MidButton)
    {
	// RB: the MMB is hardcoded to the "rubberband" scroll mode
	if (!rubberband_mode) {
	    start_rubberband(e->pos());
	}
	return;
    }
    else if ( ( rubberband_mode ) && ( e->button() != Qt::RightButton ) )
    {
	// another button was pressed while rubberbanding, stop the move.
	// RB: if we allow other buttons while rubberbanding the tree can expand
	//     while rubberbanding - we then need to reclaculate and resize the
	//     rubberband rect and show the new size
	end_rubberband();
	return;  // should we process the button press?
    }

    // find out which row has been clicked
    TQPoint mouseCoord = viewportToContents(e->pos());
    int itemClicked = rowAt(mouseCoord.y());

    // nothing to do if not on valid row
    if (itemClicked == -1)
	return;

    KTreeViewItem* item = itemAt(itemClicked);
    if (!item)
	return;

    // translate mouse coord to cell coord
    int  cellX = 0;
    int  cellY = cellHeight()*itemClicked;
    TQPoint cellCoord(mouseCoord.x() - cellX, mouseCoord.y() - cellY);

    /* hit expand button (doesn't set currentItem) */
    if(item->expandButtonClicked(cellCoord)) {
	expandOrCollapse(item);
    }
    // hit select button (to select/deselect the item for backup)
    // 2002-01-20 LEW: I'm adding the emit() here so that the screen gets updated,
    // as in KTreeView::mouseDoubleClickEvent().  KTreeViewItem::mousePressEvent()
    // returns false, so I guess some other function is being called here.
    else if ( item->mousePressEvent( cellCoord ) ) {
        // Item processed the button press in localSelected(itemClicked)
        emit selected(itemClicked);
    }
    // hit item (to show info on the file/dir label clicked)
    else if (item->boundingRect(indentation(item)).tqcontains(cellCoord)) {
      setCurrentItem(itemClicked);   // highlight item
        if ( e->button() == Qt::RightButton ) {
            emit popupMenu( itemClicked, mapToGlobal( TQPoint( e->pos().x(), e->pos().y() ) ) );
        }
    }
}

// handle mouse release events
void KTreeView::mouseReleaseEvent(TQMouseEvent *e)
{
  /* if it's the MMB end rubberbanding */
  if (rubberband_mode && e->button()==Qt::MidButton)
	{
	  end_rubberband();
	}
}

// rubberband move: draw the rubberband
void KTreeView::draw_rubberband()
{
#if 0
    /*
     * RB: I'm using a white pen because of the XorROP mode. I would prefer
     * to draw the rectangle in red but I don't now how to get a pen which
     * draws red in XorROP mode (this depends on the background). In fact
     * the color should be configurable.
     */

  if (!rubberband_mode) return;
  TQPainter paint(this);
  paint.setPen(white);
  paint.setRasterOp(XorROP);
  paint.drawRect(xOffset()*viewWidth()/totalWidth(),
                 yOffset()*viewHeight()/totalHeight(),
                 rubber_width+1, rubber_height+1);
  paint.end();
#endif
}

// rubberband move: start move
void KTreeView::start_rubberband(const TQPoint& where)
{
#if 0
  if (rubberband_mode) { // Oops!
    end_rubberband();
  }
    /* RB: Don't now, if this check is necessary */
  if (!viewWidth() || !viewHeight()) return;
  if (!totalWidth() || !totalHeight()) return;

  // calculate the size of the rubberband rectangle
  rubber_width = viewWidth()*viewWidth()/totalWidth();
  if (rubber_width > viewWidth()) rubber_width = viewWidth();
  rubber_height = viewHeight()*viewHeight()/totalHeight();
  if (rubber_height > viewHeight()) rubber_height = viewHeight();

  // remember the cursor position and the actual offset
  rubber_startMouse = where;
  rubber_startX = xOffset();
  rubber_startY = yOffset();
  rubberband_mode=TRUE;
  draw_rubberband();
#endif
}

// rubberband move: end move
void KTreeView::end_rubberband()
{
#if 0
  if (!rubberband_mode) return;
  draw_rubberband();
  rubberband_mode = FALSE;
#endif
}

// rubberband move: handle mouse moves
void KTreeView::move_rubberband(const TQPoint& where)
{
#if 0
  if (!rubberband_mode) return;

  // look how much the mouse moved and calc the new scroll position
  TQPoint delta = where - rubber_startMouse;
  int nx = rubber_startX + delta.x() * totalWidth() / viewWidth();
  int ny = rubber_startY + delta.y() * totalHeight() / viewHeight();

  // check the new position (and make it valid)
  if (nx < 0) nx = 0;
  else if (nx > maxXOffset()) nx = maxXOffset();
  if (ny < 0) ny = 0;
  else if (ny > maxYOffset()) ny = maxYOffset();

  // redraw the rubberband at the new position
  draw_rubberband();
  setOffset(nx,ny);
  draw_rubberband();
#endif
}


// paints the cell at the specified row and col
// col is ignored for now since there is only one
void KTreeView::paintCell(TQPainter* p, int row, int)
{
    KTreeViewItem* item = itemAt(row);
    if (item == 0)
	return;

    p->setClipRect(cellRect(), TQPainter::CoordPainter );
    TQColorGroup cg = tqcolorGroup();
    int indent = indentation(item);
    item->paint(p, indent, cg,
		current == row);		/* highlighted */
    p->setClipping(false);
}

/* raise the specified item up one slot in tqparent's subtree */
void KTreeView::raiseItem(KTreeViewItem *item)
{
  KTreeViewItem *itemParent = item->getParent();
  int itemChildIndex = itemParent->childIndex(item);
  if(itemChildIndex > 0) {
    bool autoU = autoUpdate();
    setAutoUpdate(FALSE);
    takeItem(item);
    insertItem(itemParent->tqchildAt(--itemChildIndex), item, TRUE);
    if(autoU && isVisible())
      tqrepaint();
    setAutoUpdate(autoU);
  }
}

// find the item at the path
KTreeViewItem* KTreeView::recursiveFind(KPath& path)
{
    if (path.isEmpty())
	return treeRoot;

    // get the next key
    TQString* searchString = path.pop();

    // find the tqparent item
    KTreeViewItem* tqparent = recursiveFind(path);
    if (tqparent == 0)
	return 0;

    /*
     * Iterate through the tqparent's tqchildren searching for searchString.
     */
    KTreeViewItem* sibling = tqparent->getChild();
    while (sibling != 0) {
	if (*searchString == sibling->getText()) {
	    break;			/* found it! */
	}
	sibling = sibling->getSibling();
    }
    return sibling;
}

// called by setExpandLevel for each item in tree
bool KTreeView::setItemExpanded(KTreeViewItem *item, void *)
{
  if (level(item) < expansion) {
    if(item->hasChild() && !item->isExpanded())
      expandSubTree(item);
    else
      item->setExpanded(TRUE);
  }
  else {
    if (item->hasChild() && item->isExpanded())
      collapseSubTree(item);
    else
      item->setExpanded(FALSE);
  }
  return FALSE;
}

// called by setExpandButtonDrawing for every item in tree
bool KTreeView::setItemExpandButtonDrawing(KTreeViewItem *item,
					      void *)
{
  item->setDrawExpandButton(drawExpandButton);
  return FALSE;
}

// called by setShowItemText for every item in tree
bool KTreeView::setItemShowText(KTreeViewItem *item,
				   void *)
{
  item->setDrawText(showText);
  return FALSE;
}

// called by setTreeDrawing for every item in tree
bool KTreeView::setItemTreeDrawing(KTreeViewItem *item, void *)
{
  item->setDrawTree(drawTree);
  return FALSE;
}

// makes the item a child of the item above it, splitting
// the tree into a new branch
void KTreeView::split(KTreeViewItem *item)
{
  KTreeViewItem *itemParent = item->getParent();
  int itemChildIndex = itemParent->childIndex(item);
  if(itemChildIndex == 0)
    return;
  bool autoU = autoUpdate();
  setAutoUpdate(FALSE);
  takeItem(item);
  appendChildItem(itemParent->tqchildAt(--itemChildIndex), item);
  if(autoU && isVisible())
    tqrepaint();
  setAutoUpdate(autoU);
}

// removes the item from the tree without deleting it
void KTreeView::takeItem(KTreeViewItem* item)
{
    assert(item->owner == this);

    // TODO: go over this function again

    bool wasVisible = item->isVisible();
    /*
     * If we have a current item, make sure that it is not in the subtree
     * that we are about to remove. If the current item is in the part
     * below the taken-out subtree, we must move it up a number of rows if
     * the taken-out subtree is at least partially visible.
     */
    KTreeViewItem* cur = current >= 0  ?  itemAt(current)  :  0;
    if (wasVisible && cur != 0) {
	KTreeViewItem* c = cur;
	while (c != 0 && c != item) {
	    c = c->getParent();
	}
	if (c != 0) {
	    // move current item to tqparent
	    cur = item->getParent();
	    if (cur == treeRoot)
		cur = 0;
	}
    }
    KTreeViewItem* parentItem = item->getParent();
    parentItem->removeChild(item);
    item->sibling = 0;
    if (wasVisible || parentItem->childCount() == 0) {
	bool autoU = autoUpdate();
	setAutoUpdate(FALSE);
	updateVisibleItems();

	if (autoU && isVisible())
	    tqrepaint();
	setAutoUpdate(autoU);
    }

    // re-seat the current item
    setCurrentItem(cur != 0  ?  itemRow(cur)  :  -1);
}

// visits each item, calculates the maximum width
// and updates TQGridView
void KTreeView::updateCellWidth()
{
    // make cells at least 1 pixel wide to avoid singularities (division by zero)
    int maxW = 1;
    forEveryVisibleItem(&KTreeView::getMaxItemWidth, &maxW);
    maxItemWidth = maxW;
    setCellWidth(maxW);
    update();
}

void KTreeView::updateVisibleItems()
{
    int index = 0;
    int count = 0;
    updateVisibleItemRec(treeRoot, index, count);
    assert(index == count);
    setNumRows(count);
    updateCellWidth();
}

void KTreeView::updateVisibleItemRec(KTreeViewItem* item, int& index, int& count)
{
    if (!item->isExpanded()) {
	// no visible items if not expanded
	return;
    }

    /*
     * Record the tqchildren of item in the list of visible items.
     *
     * Don't register item itself, it's already in the list. Also only
     * allocate new space for tqchildren.
     */
    count += item->childCount();
    if (count > itemCapacity) {
	// must reallocate
	int newCapacity = itemCapacity;
	do {
	    newCapacity += newCapacity;
	} while (newCapacity < count);
	KTreeViewItem** newItems = new KTreeViewItem*[newCapacity];
	// clear the unneeded space
	for (int i = index; i < newCapacity; i++) {
	    newItems[i] = 0;
	}
	// move already accumulated items over
	for (int i = index-1; i >= 0; i--) {
	    newItems[i] = visibleItems[i];
	}
	delete[] visibleItems;
	visibleItems = newItems;
	itemCapacity = newCapacity;
    }
    // insert tqchildren
    for (KTreeViewItem* i = item->getChild(); i != 0; i = i->getSibling()) {
	visibleItems[index++] = i;
	updateVisibleItemRec(i, index, count);
    }
}