summaryrefslogtreecommitdiffstats
path: root/tqtinterface/qt4/src/widgets/tqlineedit.cpp
blob: c7b08ef845f5d264294e6b2aa9b08d7e9ab0cc39 (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
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
/**********************************************************************
**
** Implementation of TQLineEdit widget class
**
** Created : 941011
**
** Copyright (C) 2010 Timothy Pearson and (C) 1992-2008 Trolltech ASA.
**
** This file is part of the widgets module of the TQt GUI Toolkit.
**
** This file may be used under the terms of the GNU General
** Public License versions 2.0 or 3.0 as published by the Free
** Software Foundation and appearing in the files LICENSE.GPL2
** and LICENSE.GPL3 included in the packaging of this file.
** Alternatively you may (at your option) use any later version
** of the GNU General Public License if such license has been
** publicly approved by Trolltech ASA (or its successors, if any)
** and the KDE Free TQt Foundation.
**
** Please review the following information to ensure GNU General
** Public Licensing requirements will be met:
** http://trolltech.com/products/qt/licenses/licensing/opensource/.
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
** or contact the sales department at sales@trolltech.com.
**
** This file may be used under the terms of the Q Public License as
** defined by Trolltech ASA and appearing in the file LICENSE.TQPL
** included in the packaging of this file.  Licensees holding valid TQt
** Commercial licenses may use this file in accordance with the TQt
** Commercial License Agreement provided with the Software.
**
** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
** herein.
**
**********************************************************************/

#include "tqlineedit.h"
#ifndef TQT_NO_LINEEDIT
#include "tqpainter.h"
#include "tqdrawutil.h"
#include "tqfontmetrics.h"
#include "tqpixmap.h"
#include "tqclipboard.h"
#include "tqapplication.h"
#include "tqvalidator.h"
#include "tqdragobject.h"
#include "tqtimer.h"
#include "tqpopupmenu.h"
#include "tqstringlist.h"
#include "tqguardedptr.h"
#include "tqstyle.h"
#include "tqwhatsthis.h"
#include "../kernel/tqinternal_p.h"
#include "private/tqtextlayout_p.h"
#include "tqvaluevector.h"
#if defined(TQT_ACCESSIBILITY_SUPPORT)
#include "tqaccessible.h"
#endif

#ifndef TQT_NO_ACCEL
#include "tqkeysequence.h"
#define ACCEL_KEY(k) "\t" + TQString(TQKeySequence( TQt::CTRL | TQt::Key_ ## k ))
#else
#define ACCEL_KEY(k) "\t" + TQString("Ctrl+" #k)
#endif

#define innerMargin 1

struct TQLineEditPrivate : public TQt
{
    TQLineEditPrivate( TQLineEdit *q )
	: q(q), cursor(0), cursorTimer(0), tripleClickTimer(0), frame(1),
	  cursorVisible(0), separator(0), readOnly(0), modified(0),
	  direction(TQChar::DirON), dragEnabled(1), tqalignment(0),
	  echoMode(0), textDirty(0), selDirty(0), validInput(1),
	  ascent(0), maxLength(32767), menuId(0),
	  hscroll(0), validator(0), maskData(0),
	  undoState(0), selstart(0), selend(0),
	  imstart(0), imend(0), imselstart(0), imselend(0)
#ifndef TQT_NO_DRAGANDDROP
	,dndTimer(0)
#endif
	{}
    void init( const TQString&);

    TQLineEdit *q;
    TQString text;
    int cursor;
    int cursorTimer;
    TQPoint tripleClick;
    int tripleClickTimer;
    uint frame : 1;
    uint cursorVisible : 1;
    uint separator : 1;
    uint readOnly : 1;
    uint modified : 1;
    uint direction : 5;
    uint dragEnabled : 1;
    uint tqalignment : 3;
    uint echoMode : 2;
    uint textDirty : 1;
    uint selDirty : 1;
    uint validInput : 1;
    int ascent;
    int maxLength;
    int menuId;
    int hscroll;
    TQChar passwordChar; // obsolete

    void finishChange( int validateFromState = -1, bool setModified = TRUE );

    const TQValidator* validator;
    struct MaskInputData {
	enum Casemode { NoCaseMode, Upper, Lower };
	TQChar maskChar; // either the separator char or the inputtqmask
	bool separator;
	Casemode caseMode;
    };
    TQString inputMask;
    TQChar blank;
    MaskInputData *maskData;
    inline int nextMaskBlank( int pos ) {
	int c = tqfindInMask( pos, TRUE, FALSE );
	separator |= ( c != pos );
	return ( c != -1 ?  c : maxLength );
    }
    inline int prevMaskBlank( int pos ) {
	int c = tqfindInMask( pos, FALSE, FALSE );
	separator |= ( c != pos );
	return ( c != -1 ? c : 0 );
    }

    void setCursorVisible( bool visible );


    // undo/redo handling
    enum CommandType { Separator, Insert, Remove, Delete, RemoveSelection, DeleteSelection };
    struct Command {
	inline Command(){}
	inline Command( CommandType type, int pos, TQChar c )
	    :type(type),c(c),pos(pos){}
	uint type : 4;
	TQChar c;
	int pos;
    };
    int undoState;
    TQValueVector<Command> history;
    void addCommand( const Command& cmd );
    void insert( const TQString& s );
    void del( bool wasBackspace = FALSE );
    void remove( int pos );

    inline void separate() { separator = TRUE; }
    inline void undo( int until = -1 ) {
	if ( !isUndoAvailable() )
	    return;
	deselect();
	while ( undoState && undoState > until ) {
	    Command& cmd = history[--undoState];
	    switch ( cmd.type ) {
	    case Insert:
		text.remove( cmd.pos, 1);
		cursor = cmd.pos;
		break;
	    case Remove:
	    case RemoveSelection:
		text.insert( cmd.pos, cmd.c );
		cursor = cmd.pos + 1;
		break;
	    case Delete:
	    case DeleteSelection:
		text.insert( cmd.pos, cmd.c );
		cursor = cmd.pos;
		break;
	    case Separator:
		continue;
	    }
	    if ( until < 0 && undoState ) {
		Command& next = history[undoState-1];
		if ( next.type != cmd.type && next.type < RemoveSelection
		     && !( cmd.type >= RemoveSelection && next.type != Separator ) )
		    break;
	    }
	}
	modified = ( undoState != 0 );
	textDirty = TRUE;
    }
    inline void redo() {
	if ( !isRedoAvailable() )
	    return;
	deselect();
	while ( undoState < (int)history.size() ) {
	    Command& cmd = history[undoState++];
	    switch ( cmd.type ) {
	    case Insert:
		text.insert( cmd.pos, cmd.c );
		cursor = cmd.pos + 1;
		break;
	    case Remove:
	    case Delete:
	    case RemoveSelection:
	    case DeleteSelection:
		text.remove( cmd.pos, 1 );
		cursor = cmd.pos;
		break;
	    case Separator:
		continue;
	    }
	    if ( undoState < (int)history.size() ) {
		Command& next = history[undoState];
		if ( next.type != cmd.type && cmd.type < RemoveSelection
		     && !( next.type >= RemoveSelection && cmd.type != Separator ) )
		    break;
	    }
	}
	textDirty = TRUE;
    }
    inline bool isUndoAvailable() const { return !readOnly && undoState; }
    inline bool isRedoAvailable() const { return !readOnly && undoState < (int)history.size(); }

    // bidi
    inline bool isRightToLeft() const { return direction==TQChar::DirON?text.isRightToLeft():(direction==TQChar::DirR); }

    // selection
    int selstart, selend;
    inline bool allSelected() const { return !text.isEmpty() && selstart == 0 && selend == (int)text.length(); }
    inline bool hasSelectedText() const { return !text.isEmpty() && selend > selstart; }
    inline void deselect() { selDirty |= (selend > selstart); selstart = selend = 0; }
    void removeSelectedText();
#ifndef TQT_NO_CLIPBOARD
    void copy( bool clipboard = TRUE ) const;
#endif
    inline bool inSelection( int x ) const
    { if ( selstart >= selend ) return FALSE;
    int pos = xToPos( x, TQTextItem::OnCharacters );  return pos >= selstart && pos < selend; }

    // masking
    void parseInputMask( const TQString &maskFields );
    bool isValidInput( TQChar key, TQChar tqmask ) const;
    TQString maskString( uint pos, const TQString &str, bool clear = FALSE ) const;
    TQString clearString( uint pos, uint len ) const;
    TQString stripString( const TQString &str ) const;
    int tqfindInMask( int pos, bool forward, bool tqfindSeparator, TQChar searchChar = TQChar() ) const;

    // input methods
    int imstart, imend, imselstart, imselend;

    // complex text tqlayout
    TQTextLayout textLayout;
    void updateTextLayout();
    void moveCursor( int pos, bool mark = FALSE );
    void setText( const TQString& txt );
    int xToPos( int x, TQTextItem::CursorPosition = TQTextItem::BetweenCharacters ) const;
    inline int visualAlignment() const { return tqalignment ? tqalignment : int( isRightToLeft() ? TQt::AlignRight : TQt::AlignLeft ); }
    TQRect cursorRect() const;
    void updateMicroFocusHint();

#ifndef TQT_NO_DRAGANDDROP
    // drag and drop
    TQPoint dndPos;
    int dndTimer;
    bool drag();
#endif
};


/*!
    \class TQLineEdit
    \brief The TQLineEdit widget is a one-line text editor.

    \ingroup basic
    \mainclass

    A line edit allows the user to enter and edit a single line of
    plain text with a useful collection of editing functions,
    including undo and redo, cut and paste, and drag and drop.

    By changing the echoMode() of a line edit, it can also be used as
    a "write-only" field, for inputs such as passwords.

    The length of the text can be constrained to maxLength(). The text
    can be arbitrarily constrained using a validator() or an
    inputMask(), or both.

    A related class is TQTextEdit which allows multi-line, rich-text
    editing.

    You can change the text with setText() or insert(). The text is
    retrieved with text(); the displayed text (which may be different,
    see \l{EchoMode}) is retrieved with displayText(). Text can be
    selected with setSelection() or selectAll(), and the selection can
    be cut(), copy()ied and paste()d. The text can be aligned with
    tqsetAlignment().

    When the text changes the textChanged() signal is emitted; when
    the Return or Enter key is pressed the returnPressed() signal is
    emitted. Note that if there is a validator set on the line edit,
    the returnPressed() signal will only be emitted if the validator
    returns \c Acceptable.

    By default, TQLineEdits have a frame as specified by the Windows
    and Motif style guides; you can turn it off by calling
    setFrame(FALSE).

    The default key bindings are described below. The line edit also
    provides a context menu (usually invoked by a right mouse click)
    that presents some of these editing options.
    \target desc
    \table
    \header \i Keypress \i Action
    \row \i Left Arrow \i Moves the cursor one character to the left.
    \row \i Shift+Left Arrow \i Moves and selects text one character to the left.
    \row \i Right Arrow \i Moves the cursor one character to the right.
    \row \i Shift+Right Arrow \i Moves and selects text one character to the right.
    \row \i Home \i Moves the cursor to the beginning of the line.
    \row \i End \i Moves the cursor to the end of the line.
    \row \i Backspace \i Deletes the character to the left of the cursor.
    \row \i Ctrl+Backspace \i Deletes the word to the left of the cursor.
    \row \i Delete \i Deletes the character to the right of the cursor.
    \row \i Ctrl+Delete \i Deletes the word to the right of the cursor.
    \row \i Ctrl+A \i Moves the cursor to the beginning of the line.
    \row \i Ctrl+B \i Moves the cursor one character to the left.
    \row \i Ctrl+C \i Copies the selected text to the clipboard.
		      (Windows also supports Ctrl+Insert for this operation.)
    \row \i Ctrl+D \i Deletes the character to the right of the cursor.
    \row \i Ctrl+E \i Moves the cursor to the end of the line.
    \row \i Ctrl+F \i Moves the cursor one character to the right.
    \row \i Ctrl+H \i Deletes the character to the left of the cursor.
    \row \i Ctrl+K \i Deletes to the end of the line.
    \row \i Ctrl+V \i Pastes the clipboard text into line edit.
		      (Windows also supports Shift+Insert for this operation.)
    \row \i Ctrl+X \i Deletes the selected text and copies it to the clipboard.
		      (Windows also supports Shift+Delete for this operation.)
    \row \i Ctrl+Z \i Undoes the last operation.
    \row \i Ctrl+Y \i Redoes the last undone operation.
    \endtable

    Any other key sequence that represents a valid character, will
    cause the character to be inserted into the line edit.

    <img src=qlined-m.png> <img src=qlined-w.png>

    \sa TQTextEdit TQLabel TQComboBox
	\link guibooks.html#fowler GUI Design Handbook: Field, Entry\endlink
*/


/*!
    \fn void TQLineEdit::textChanged( const TQString& )

    This signal is emitted whenever the text changes. The argument is
    the new text.
*/

/*!
    \fn void TQLineEdit::selectionChanged()

    This signal is emitted whenever the selection changes.

    \sa hasSelectedText(), selectedText()
*/

/*!
    \fn void TQLineEdit::lostFocus()

    This signal is emitted when the line edit has lost focus.

    \sa hasFocus(), TQWidget::focusInEvent(), TQWidget::focusOutEvent()
*/



/*!
    Constructs a line edit with no text.

    The maximum text length is set to 32767 characters.

    The \a tqparent and \a name arguments are sent to the TQWidget constructor.

    \sa setText(), setMaxLength()
*/

TQLineEdit::TQLineEdit( TQWidget* tqparent, const char* name )
    : TQFrame( tqparent, name, TQt::WNoAutoErase ), d(new TQLineEditPrivate( this ))
{
    d->init( TQString::null );
}

/*!
    Constructs a line edit containing the text \a contents.

    The cursor position is set to the end of the line and the maximum
    text length to 32767 characters.

    The \a tqparent and \a name arguments are sent to the TQWidget
    constructor.

    \sa text(), setMaxLength()
*/

TQLineEdit::TQLineEdit( const TQString& contents, TQWidget* tqparent, const char* name )
    : TQFrame( tqparent, name, TQt::WNoAutoErase ), d(new TQLineEditPrivate( this ))
{
    d->init( contents );
}

/*!
    Constructs a line edit with an input \a inputMask and the text \a
    contents.

    The cursor position is set to the end of the line and the maximum
    text length is set to the length of the tqmask (the number of tqmask
    characters and separators).

    The \a tqparent and \a name arguments are sent to the TQWidget
    constructor.

    \sa setMask() text()
*/
TQLineEdit::TQLineEdit( const TQString& contents, const TQString &inputMask, TQWidget* tqparent, const char* name )
    : TQFrame( tqparent, name, TQt::WNoAutoErase ), d(new TQLineEditPrivate( this ))
{
    d->parseInputMask( inputMask );
    if ( d->maskData ) {
	TQString ms = d->maskString( 0, contents );
	d->init( ms + d->clearString( ms.length(), d->maxLength - ms.length() ) );
	d->cursor = d->nextMaskBlank( ms.length() );
    } else {
	d->init( contents );
    }
}

/*!
    Destroys the line edit.
*/

TQLineEdit::~TQLineEdit()
{
    delete [] d->maskData;
    delete d;
}


/*!
    \property TQLineEdit::text
    \brief the line edit's text

    Note that setting this property clears the selection, clears the
    undo/redo history, moves the cursor to the end of the line and
    resets the \c modified property to FALSE. The text is not
    validated when inserted with setText().

    The text is truncated to maxLength() length.

    \sa insert()
*/
TQString TQLineEdit::text() const
{
    TQString res = d->text;
    if ( d->maskData )
	res = d->stripString( d->text );
    return ( res.isNull() ? TQString::tqfromLatin1("") : res );
}

void TQLineEdit::setText( const TQString& text)
{
    resetInputContext();
    d->setText( text );
    d->modified = FALSE;
    d->finishChange( -1, FALSE );
}


/*!
    \property TQLineEdit::displayText
    \brief the displayed text

    If \c EchoMode is \c Normal this returns the same as text(); if
    \c EchoMode is \c Password it returns a string of asterisks
    text().length() characters long, e.g. "******"; if \c EchoMode is
    \c NoEcho returns an empty string, "".

    \sa setEchoMode() text() EchoMode
*/

TQString TQLineEdit::displayText() const
{
    if ( d->echoMode == NoEcho )
	return TQString::tqfromLatin1("");
    TQString res = d->text;
    if ( d->echoMode == Password )
	res.fill( passwordChar() );
    return ( res.isNull() ? TQString::tqfromLatin1("") : res );
}


/*!
    \property TQLineEdit::maxLength
    \brief the maximum permitted length of the text

    If the text is too long, it is truncated at the limit.

    If truncation occurs any selected text will be unselected, the
    cursor position is set to 0 and the first part of the string is
    shown.

    If the line edit has an input tqmask, the tqmask defines the maximum
    string length.

    \sa inputMask
*/

int TQLineEdit::maxLength() const
{
    return d->maxLength;
}

void TQLineEdit::setMaxLength( int maxLength )
{
    if ( d->maskData )
	return;
    d->maxLength = maxLength;
    setText( d->text );
}



/*!
    \property TQLineEdit::frame
    \brief whether the line edit draws itself with a frame

    If enabled (the default) the line edit draws itself inside a
    two-pixel frame, otherwise the line edit draws itself without any
    frame.
*/
bool TQLineEdit::frame() const
{
    return frameShape() != NoFrame;
}


void TQLineEdit::setFrame( bool enable )
{
    setFrameStyle( enable ? ( LineEditPanel | Sunken ) : NoFrame  );
}


/*!
    \enum TQLineEdit::EchoMode

    This enum type describes how a line edit should display its
    contents.

    \value Normal   Display characters as they are entered. This is the
		    default.
    \value NoEcho   Do not display anything. This may be appropriate
		    for passwords where even the length of the
		    password should be kept secret.
    \value Password  Display asterisks instead of the characters
		    actually entered.

    \sa setEchoMode() echoMode()
*/


/*!
    \property TQLineEdit::echoMode
    \brief the line edit's echo mode

    The initial setting is \c Normal, but TQLineEdit also supports \c
    NoEcho and \c Password modes.

    The widget's display and the ability to copy or drag the text is
    affected by this setting.

    \sa EchoMode displayText()
*/

TQLineEdit::EchoMode TQLineEdit::echoMode() const
{
    return (EchoMode) d->echoMode;
}

void TQLineEdit::setEchoMode( EchoMode mode )
{
    if (mode == (EchoMode)d->echoMode)
	return;
    d->echoMode = mode;
    d->updateTextLayout();
    update();
}



/*!
    Returns a pointer to the current input validator, or 0 if no
    validator has been set.

    \sa setValidator()
*/

const TQValidator * TQLineEdit::validator() const
{
    return d->validator;
}

/*!
    Sets this line edit to only accept input that the validator, \a v,
    will accept. This allows you to place any arbitrary constraints on
    the text which may be entered.

    If \a v == 0, setValidator() removes the current input validator.
    The initial setting is to have no input validator (i.e. any input
    is accepted up to maxLength()).

    \sa validator() TQIntValidator TQDoubleValidator TQRegExpValidator
*/

void TQLineEdit::setValidator( const TQValidator *v )
{
    if ( d->validator )
	disconnect( (TQObject*)d->validator, TQT_SIGNAL( destroyed() ),
		    this, TQT_SLOT( clearValidator() ) );
    d->validator = v;
    if ( d->validator )
	connect( (TQObject*)d->validator, TQT_SIGNAL( destroyed() ),
	         this, TQT_SLOT( clearValidator() ) );
}



/*!
    Returns a recommended size for the widget.

    The width returned, in pixels, is usually enough for about 15 to
    20 characters.
*/

TQSize TQLineEdit::sizeHint() const
{
    constPolish();
    TQFontMetrics fm( font() );
    int h = TQMAX(fm.lineSpacing(), 14) + 2*innerMargin;
    int w = fm.width( 'x' ) * 17; // "some"
    int m = frameWidth() * 2;
    return (tqstyle().sizeFromContents(TQStyle::CT_LineEdit, this,
				     TQSize( w + m, h + m ).
				     expandedTo(TQApplication::globalStrut())));
}


/*!
    Returns a minimum size for the line edit.

    The width returned is enough for at least one character.
*/

TQSize TQLineEdit::tqminimumSizeHint() const
{
    constPolish();
    TQFontMetrics fm = fontMetrics();
    int h = fm.height() + TQMAX( 2*innerMargin, fm.leading() );
    int w = fm.maxWidth();
    int m = frameWidth() * 2;
    return TQSize( w + m, h + m );
}


/*!
    \property TQLineEdit::cursorPosition
    \brief the current cursor position for this line edit

    Setting the cursor position causes a tqrepaint when appropriate.
*/

int TQLineEdit::cursorPosition() const
{
    return d->cursor;
}


void TQLineEdit::setCursorPosition( int pos )
{
    if (pos < 0)
        pos = 0;

    if ( pos <= (int) d->text.length() )
	d->moveCursor( pos );
}


/*! \obsolete Use setText(), setCursorPosition() and setSelection() instead.
*/

bool TQLineEdit::validateAndSet( const TQString &newText, int newPos,
				 int newMarkAnchor, int newMarkDrag )
{
    int priorState = d->undoState;
    d->selstart = 0;
    d->selend = d->text.length();
    d->removeSelectedText();
    d->insert( newText );
    d->finishChange( priorState );
    if ( d->undoState > priorState ) {
	d->cursor = newPos;
	d->selstart = TQMIN( newMarkAnchor, newMarkDrag );
	d->selend = TQMAX( newMarkAnchor, newMarkDrag );
	d->updateMicroFocusHint();
	update();
	return TRUE;
    }
    return FALSE;
}


/*!
    \property TQLineEdit::tqalignment
    \brief the tqalignment of the line edit

    Possible Values are \c TQt::AlignAuto, \c TQt::AlignLeft, \c
    TQt::AlignRight and \c TQt::AlignHCenter.

    Attempting to set the tqalignment to an illegal flag combination
    does nothing.

    \sa TQt::AlignmentFlags
*/

int TQLineEdit::tqalignment() const
{
    return d->tqalignment;
}

void TQLineEdit::tqsetAlignment( int flag )
{
    d->tqalignment = flag & 0x7;
    update();
}


/*!
  \obsolete
  \fn void TQLineEdit::cursorRight( bool, int )

  Use cursorForward() instead.

  \sa cursorForward()
*/

/*!
  \obsolete
  \fn void TQLineEdit::cursorLeft( bool, int )
  For compatibilty with older applications only. Use cursorBackward()
  instead.
  \sa cursorBackward()
*/

/*!
    Moves the cursor forward \a steps characters. If \a mark is TRUE
    each character moved over is added to the selection; if \a mark is
    FALSE the selection is cleared.

    \sa cursorBackward()
*/

void TQLineEdit::cursorForward( bool mark, int steps )
{
    int cursor = d->cursor;
    if ( steps > 0 ) {
	while( steps-- )
	    cursor = d->textLayout.nextCursorPosition( cursor );
    } else if ( steps < 0 ) {
	while ( steps++ )
	    cursor = d->textLayout.previousCursorPosition( cursor );
    }
    d->moveCursor( cursor, mark );
}


/*!
    Moves the cursor back \a steps characters. If \a mark is TRUE each
    character moved over is added to the selection; if \a mark is
    FALSE the selection is cleared.

    \sa cursorForward()
*/
void TQLineEdit::cursorBackward( bool mark, int steps )
{
    cursorForward( mark, -steps );
}

/*!
    Moves the cursor one word forward. If \a mark is TRUE, the word is
    also selected.

    \sa cursorWordBackward()
*/
void TQLineEdit::cursorWordForward( bool mark )
{
    d->moveCursor( d->textLayout.nextCursorPosition(d->cursor, TQTextLayout::SkipWords), mark );
}

/*!
    Moves the cursor one word backward. If \a mark is TRUE, the word
    is also selected.

    \sa cursorWordForward()
*/

void TQLineEdit::cursorWordBackward( bool mark )
{
    d->moveCursor( d->textLayout.previousCursorPosition(d->cursor, TQTextLayout::SkipWords), mark );
}


/*!
    If no text is selected, deletes the character to the left of the
    text cursor and moves the cursor one position to the left. If any
    text is selected, the cursor is moved to the beginning of the
    selected text and the selected text is deleted.

    \sa del()
*/
void TQLineEdit::backspace()
{
    int priorState = d->undoState;
    if ( d->hasSelectedText() ) {
	d->removeSelectedText();
    } else if ( d->cursor ) {
	    --d->cursor;
	    if ( d->maskData )
		d->cursor = d->prevMaskBlank( d->cursor );
	    d->del( TRUE );
    }
    d->finishChange( priorState );
}

/*!
    If no text is selected, deletes the character to the right of the
    text cursor. If any text is selected, the cursor is moved to the
    beginning of the selected text and the selected text is deleted.

    \sa backspace()
*/

void TQLineEdit::del()
{
    int priorState = d->undoState;
    if ( d->hasSelectedText() ) {
	d->removeSelectedText();
    } else {
	int n = d->textLayout.nextCursorPosition( d->cursor ) - d->cursor;
	while ( n-- )
	    d->del();
    }
    d->finishChange( priorState );
}

/*!
    Moves the text cursor to the beginning of the line unless it is
    already there. If \a mark is TRUE, text is selected towards the
    first position; otherwise, any selected text is unselected if the
    cursor is moved.

    \sa end()
*/

void TQLineEdit::home( bool mark )
{
    d->moveCursor( 0, mark );
}

/*!
    Moves the text cursor to the end of the line unless it is already
    there. If \a mark is TRUE, text is selected towards the last
    position; otherwise, any selected text is unselected if the cursor
    is moved.

    \sa home()
*/

void TQLineEdit::end( bool mark )
{
    d->moveCursor( d->text.length(), mark );
}


/*!
    \property TQLineEdit::modified
    \brief whether the line edit's contents has been modified by the user

    The modified flag is never read by TQLineEdit; it has a default value
    of FALSE and is changed to TRUE whenever the user changes the line
    edit's contents.

    This is useful for things that need to provide a default value but
    do not start out knowing what the default should be (perhaps it
    depends on other fields on the form). Start the line edit without
    the best default, and when the default is known, if modified()
    returns FALSE (the user hasn't entered any text), insert the
    default value.

    Calling clearModified() or setText() resets the modified flag to
    FALSE.
*/

bool TQLineEdit::isModified() const
{
    return d->modified;
}

/*!
    Resets the modified flag to FALSE.

    \sa isModified()
*/
void TQLineEdit::clearModified()
{
    d->modified = FALSE;
    d->history.clear();
    d->undoState = 0;
}

/*!
  \obsolete
  \property TQLineEdit::edited
  \brief whether the line edit has been edited. Use modified instead.
*/
bool TQLineEdit::edited() const { return d->modified; }
void TQLineEdit::setEdited( bool on ) { d->modified = on; }

/*!
    \obsolete
    \property TQLineEdit::hasMarkedText
    \brief whether part of the text has been selected by the user. Use hasSelectedText instead.
*/

/*!
    \property TQLineEdit::hasSelectedText
    \brief whether there is any text selected

    hasSelectedText() returns TRUE if some or all of the text has been
    selected by the user; otherwise returns FALSE.

    \sa selectedText()
*/


bool TQLineEdit::hasSelectedText() const
{
    return d->hasSelectedText();
}

/*!
  \obsolete
  \property TQLineEdit::markedText
  \brief the text selected by the user. Use selectedText instead.
*/

/*!
    \property TQLineEdit::selectedText
    \brief the selected text

    If there is no selected text this property's value is
    TQString::null.

    \sa hasSelectedText()
*/

TQString TQLineEdit::selectedText() const
{
    if ( d->hasSelectedText() )
	return d->text.mid( d->selstart, d->selend - d->selstart );
    return TQString::null;
}

/*!
    selectionStart() returns the index of the first selected character in the
    line edit or -1 if no text is selected.

    \sa selectedText()
*/

int TQLineEdit::selectionStart() const
{
    return d->hasSelectedText() ? d->selstart : -1;
}

/*! \obsolete use selectedText(), selectionStart() */
bool TQLineEdit::getSelection( int *start, int *end )
{
    if ( d->hasSelectedText() && start && end ) {
	*start = d->selstart;
	*end = d->selend;
	return TRUE;
    }
    return FALSE;
}


/*!
    Selects text from position \a start and for \a length characters.

    Note that this function sets the cursor's position to the end of
    the selection regardless of its current position.

    \sa deselect() selectAll() getSelection() cursorForward() cursorBackward()
*/

void TQLineEdit::setSelection( int start, int length )
{
    if ( start < 0 || start > (int)d->text.length() || length < 0 ) {
	d->selstart = d->selend = 0;
    } else {
	d->selstart = start;
	d->selend = TQMIN( start + length, (int)d->text.length() );
	d->cursor = d->selend;
    }
    update();
}


/*!
    \property TQLineEdit::undoAvailable
    \brief whether undo is available
*/

bool TQLineEdit::isUndoAvailable() const
{
    return d->isUndoAvailable();
}

/*!
    \property TQLineEdit::redoAvailable
    \brief whether redo is available
*/

bool TQLineEdit::isRedoAvailable() const
{
    return d->isRedoAvailable();
}

/*!
    \property TQLineEdit::dragEnabled
    \brief whether the lineedit starts a drag if the user presses and
    moves the mouse on some selected text
*/

bool TQLineEdit::dragEnabled() const
{
    return d->dragEnabled;
}

void TQLineEdit::setDragEnabled( bool b )
{
    d->dragEnabled = b;
}

/*!
    \property TQLineEdit::acceptableInput
    \brief whether the input satisfies the inputMask and the
    validator.

    \sa setInputMask(), setValidator()
*/
bool TQLineEdit::hasAcceptableInput() const
{
#ifndef TQT_NO_VALIDATOR
    TQString text = d->text;
    int cursor = d->cursor;
    if ( d->validator && d->validator->validate( text, cursor ) != TQValidator::Acceptable )
	return FALSE;
#endif

    if ( !d->maskData )
	return TRUE;

    if ( d->text.length() != (uint)d->maxLength )
 	return FALSE;

    for ( uint i=0; i < (uint)d->maxLength; i++) {
	if ( d->maskData[i].separator ) {
	    if ( d->text[(int)i] != d->maskData[i].maskChar )
		return FALSE;
	} else {
	    if ( !d->isValidInput( d->text[(int)i], d->maskData[i].maskChar ) )
		return FALSE;
	}
    }
    return TRUE;
}


/*!
    \property TQLineEdit::inputMask
    \brief The validation input tqmask

    If no tqmask is set, inputMask() returns TQString::null.

    Sets the TQLineEdit's validation tqmask. Validators can be used
    instead of, or in conjunction with masks; see setValidator().

    Unset the tqmask and return to normal TQLineEdit operation by passing
    an empty string ("") or just calling setInputMask() with no
    arguments.

    The tqmask format understands these tqmask characters:
    \table
    \header \i Character \i Meaning
    \row \i \c A \i ASCII alphabetic character required. A-Z, a-z.
    \row \i \c a \i ASCII alphabetic character permitted but not required.
    \row \i \c N \i ASCII alphanumeric character required. A-Z, a-z, 0-9.
    \row \i \c n \i ASCII alphanumeric character permitted but not required.
    \row \i \c X \i Any character required.
    \row \i \c x \i Any character permitted but not required.
    \row \i \c 9 \i ASCII digit required. 0-9.
    \row \i \c 0 \i ASCII digit permitted but not required.
    \row \i \c D \i ASCII digit required. 1-9.
    \row \i \c d \i ASCII digit permitted but not required (1-9).
    \row \i \c # \i ASCII digit or plus/minus sign permitted but not required.
    \row \i \c > \i All following alphabetic characters are uppercased.
    \row \i \c < \i All following alphabetic characters are lowercased.
    \row \i \c ! \i Switch off case conversion.
    \row \i <tt>\\</tt> \i Use <tt>\\</tt> to escape the special
			   characters listed above to use them as
			   separators.
    \endtable

    The tqmask consists of a string of tqmask characters and separators,
    optionally followed by a semi-colon and the character used for
    blanks: the blank characters are always removed from the text
    after editing. The default blank character is space.

    Examples:
    \table
    \header \i Mask \i Notes
    \row \i \c 000.000.000.000;_ \i IP address; blanks are \c{_}.
    \row \i \c 0000-00-00 \i ISO Date; blanks are \c space
    \row \i \c >AAAAA-AAAAA-AAAAA-AAAAA-AAAAA;# \i License number;
    blanks are \c - and all (alphabetic) characters are converted to
    uppercase.
    \endtable

    To get range control (e.g. for an IP address) use masks together
    with \link setValidator() validators\endlink.

    \sa maxLength
*/
TQString TQLineEdit::inputMask() const
{
    return ( d->maskData ? d->inputMask + ';' + d->blank : TQString() );
}

void TQLineEdit::setInputMask( const TQString &inputMask )
{
    d->parseInputMask( inputMask );
    if ( d->maskData )
	d->moveCursor( d->nextMaskBlank( 0 ) );
}

/*!
    Selects all the text (i.e. highlights it) and moves the cursor to
    the end. This is useful when a default value has been inserted
    because if the user types before clicking on the widget, the
    selected text will be deleted.

    \sa setSelection() deselect()
*/

void TQLineEdit::selectAll()
{
    d->selstart = d->selend = d->cursor = 0;
    d->moveCursor( d->text.length(), TRUE );
}

/*!
    Deselects any selected text.

    \sa setSelection() selectAll()
*/

void TQLineEdit::deselect()
{
    d->deselect();
    d->finishChange();
}


/*!
    This slot is equivalent to setValidator(0).
*/

void TQLineEdit::clearValidator()
{
    setValidator( 0 );
}

/*!
    Deletes any selected text, inserts \a newText, and validates the
    result. If it is valid, it sets it as the new contents of the line
    edit.
*/
void TQLineEdit::insert( const TQString &newText )
{
//     q->resetInputContext(); //#### FIX ME IN QT
    int priorState = d->undoState;
    d->removeSelectedText();
    d->insert( newText );
    d->finishChange( priorState );
}

/*!
    Clears the contents of the line edit.
*/
void TQLineEdit::clear()
{
    int priorState = d->undoState;
    resetInputContext();
    d->selstart = 0;
    d->selend = d->text.length();
    d->removeSelectedText();
    d->separate();
    d->finishChange( priorState );
}

/*!
    Undoes the last operation if undo is \link
    TQLineEdit::undoAvailable available\endlink. Deselects any current
    selection, and updates the selection start to the current cursor
    position.
*/
void TQLineEdit::undo()
{
    resetInputContext();
    d->undo();
    d->finishChange( -1, FALSE );
}

/*!
    Redoes the last operation if redo is \link
    TQLineEdit::redoAvailable available\endlink.
*/
void TQLineEdit::redo()
{
    resetInputContext();
    d->redo();
    d->finishChange();
}


/*!
    \property TQLineEdit::readOnly
    \brief whether the line edit is read only.

    In read-only mode, the user can still copy the text to the
    clipboard or drag-and-drop the text (if echoMode() is \c Normal),
    but cannot edit it.

    TQLineEdit does not show a cursor in read-only mode.

    \sa setEnabled()
*/

bool TQLineEdit::isReadOnly() const
{
    return d->readOnly;
}

void TQLineEdit::setReadOnly( bool enable )
{
    d->readOnly = enable;
#ifndef TQT_NO_CURSOR
    setCursor( enable ? Qt::ArrowCursor : Qt::IBeamCursor );
#endif
    update();
}


#ifndef TQT_NO_CLIPBOARD
/*!
    Copies the selected text to the clipboard and deletes it, if there
    is any, and if echoMode() is \c Normal.

    If the current validator disallows deleting the selected text,
    cut() will copy without deleting.

    \sa copy() paste() setValidator()
*/

void TQLineEdit::cut()
{
    if ( hasSelectedText() ) {
	copy();
	del();
    }
}


/*!
    Copies the selected text to the clipboard, if there is any, and if
    echoMode() is \c Normal.

    \sa cut() paste()
*/

void TQLineEdit::copy() const
{
    d->copy();
}

/*!
    Inserts the clipboard's text at the cursor position, deleting any
    selected text, providing the line edit is not \link
    TQLineEdit::readOnly read-only\endlink.

    If the end result would not be acceptable to the current
    \link setValidator() validator\endlink, nothing happens.

    \sa copy() cut()
*/

void TQLineEdit::paste()
{
    insert( TQApplication::tqclipboard()->text( TQClipboard::Clipboard ) );
}

void TQLineEditPrivate::copy( bool clipboard ) const
{
    TQString t = q->selectedText();
    if ( !t.isEmpty() && echoMode == TQLineEdit::Normal ) {
	q->disconnect( TQApplication::tqclipboard(), TQT_SIGNAL(selectionChanged()), q, 0);
	TQApplication::tqclipboard()->setText( t, clipboard ? TQClipboard::Clipboard : TQClipboard::Selection );
	q->connect( TQApplication::tqclipboard(), TQT_SIGNAL(selectionChanged()),
		 q, TQT_SLOT(clipboardChanged()) );
    }
}

#endif // !TQT_NO_CLIPBOARD

/*!\reimp
*/

void TQLineEdit::resizeEvent( TQResizeEvent *e )
{
    TQFrame::resizeEvent( e );
}

/*! \reimp
*/
bool TQLineEdit::event( TQEvent * e )
{
    if ( e->type() == TQEvent::AccelOverride && !d->readOnly ) {
	TQKeyEvent* ke = (TQKeyEvent*) e;
	if ( ke->state() == Qt::NoButton || ke->state() == ShiftButton
	     || ke->state() == TQt::Keypad ) {
	    if ( ke->key() < Key_Escape ) {
		ke->accept();
	    } else {
		switch ( ke->key() ) {
  		case Qt::Key_Delete:
  		case Qt::Key_Home:
  		case Qt::Key_End:
  		case Qt::Key_Backspace:
 		case Qt::Key_Left:
		case Qt::Key_Right:
 		    ke->accept();
 		default:
  		    break;
  		}
	    }
	} else if ( ke->state() & ControlButton ) {
	    switch ( ke->key() ) {
// Those are too frequently used for application functionality
/*	    case Qt::Key_A:
	    case Qt::Key_B:
	    case Qt::Key_D:
	    case Qt::Key_E:
	    case Qt::Key_F:
	    case Qt::Key_H:
	    case Qt::Key_K:
*/
	    case Qt::Key_C:
	    case Qt::Key_V:
	    case Qt::Key_X:
	    case Qt::Key_Y:
	    case Qt::Key_Z:
	    case Qt::Key_Left:
	    case Qt::Key_Right:
#if defined (TQ_WS_WIN)
	    case Qt::Key_Insert:
	    case Qt::Key_Delete:
#endif
		ke->accept();
	    default:
		break;
	    }
	}
    } else if ( e->type() == TQEvent::Timer ) {
	// should be timerEvent, is here for binary compatibility
	int timerId = ((TQTimerEvent*)e)->timerId();
	if ( timerId == d->cursorTimer ) {
	    if(!hasSelectedText() || tqstyle().tqstyleHint( TQStyle::SH_BlinkCursorWhenTextSelected ))
		d->setCursorVisible( !d->cursorVisible );
#ifndef TQT_NO_DRAGANDDROP
	} else if ( timerId == d->dndTimer ) {
	    if( !d->drag() )
                return TRUE;
#endif
	} else if ( timerId == d->tripleClickTimer ) {
	    killTimer( d->tripleClickTimer );
	    d->tripleClickTimer = 0;
	}
    }
    return TQWidget::event( e );
}

/*! \reimp
*/
void TQLineEdit::mousePressEvent( TQMouseEvent* e )
{
    if ( e->button() == Qt::RightButton )
	return;
    if ( d->tripleClickTimer && ( e->pos() - d->tripleClick ).manhattanLength() <
	 TQApplication::startDragDistance() ) {
	selectAll();
	return;
    }
    bool mark = e->state() & ShiftButton;
    int cursor = d->xToPos( e->pos().x() );
#ifndef TQT_NO_DRAGANDDROP
    if ( !mark && d->dragEnabled && d->echoMode == Normal &&
	 e->button() == Qt::LeftButton && d->inSelection( e->pos().x() ) ) {
	d->cursor = cursor;
	d->updateMicroFocusHint();
	update();
	d->dndPos = e->pos();
	if ( !d->dndTimer )
	    d->dndTimer = startTimer( TQApplication::startDragTime() );
    } else
#endif
    {
	d->moveCursor( cursor, mark );
    }
}

/*! \reimp
*/
void TQLineEdit::mouseMoveEvent( TQMouseEvent * e )
{

#ifndef TQT_NO_CURSOR
    if ( ( e->state() & Qt::MouseButtonMask ) == 0 ) {
	if ( !d->readOnly && d->dragEnabled
#ifndef TQT_NO_WHATSTHIS
	     && !TQWhatsThis::inWhatsThisMode()
#endif
	    )
	    setCursor( ( d->inSelection( e->pos().x() ) ? Qt::ArrowCursor : Qt::IBeamCursor ) );
    }
#endif

    if ( e->state() & Qt::LeftButton ) {
#ifndef TQT_NO_DRAGANDDROP
	if ( d->dndTimer ) {
	    if ( ( d->dndPos - e->pos() ).manhattanLength() > TQApplication::startDragDistance() )
		d->drag();
	} else
#endif
	{
	    d->moveCursor( d->xToPos( e->pos().x() ), TRUE );
	}
    }
}

/*! \reimp
*/
void TQLineEdit::mouseReleaseEvent( TQMouseEvent* e )
{
#ifndef TQT_NO_DRAGANDDROP
    if ( e->button() == Qt::LeftButton ) {
	if ( d->dndTimer ) {
	    killTimer( d->dndTimer );
	    d->dndTimer = 0;
	    deselect();
	    return;
	}
    }
#endif
#ifndef TQT_NO_CLIPBOARD
    if (TQApplication::tqclipboard()->supportsSelection() ) {
	if ( e->button() == Qt::LeftButton ) {
	    d->copy( FALSE );
	} else if ( !d->readOnly && e->button() == Qt::MidButton ) {
	    d->deselect();
	    insert( TQApplication::tqclipboard()->text( TQClipboard::Selection ) );
	}
    }
#endif
}

/*! \reimp
*/
void TQLineEdit::mouseDoubleClickEvent( TQMouseEvent* e )
{
    if ( e->button() == Qt::LeftButton ) {
	deselect();
	d->cursor = d->xToPos( e->pos().x() );
	d->cursor = d->textLayout.previousCursorPosition( d->cursor, TQTextLayout::SkipWords );
	// ## text tqlayout should support end of words.
	int end = d->textLayout.nextCursorPosition( d->cursor, TQTextLayout::SkipWords );
	while ( end > d->cursor && d->text[end-1].isSpace() )
	    --end;
	d->moveCursor( end, TRUE );
	d->tripleClickTimer = startTimer( TQApplication::doubleClickInterval() );
	d->tripleClick = e->pos();
    }
}

/*!
    \fn void  TQLineEdit::returnPressed()

    This signal is emitted when the Return or Enter key is pressed.
    Note that if there is a validator() or inputMask() set on the line
    edit, the returnPressed() signal will only be emitted if the input
    follows the inputMask() and the validator() returns \c Acceptable.
*/

/*!
    Converts key press event \a e into a line edit action.

    If Return or Enter is pressed and the current text is valid (or
    can be \link TQValidator::fixup() made valid\endlink by the
    validator), the signal returnPressed() is emitted.

    The default key bindings are listed in the \link #desc detailed
    description.\endlink
*/

void TQLineEdit::keyPressEvent( TQKeyEvent * e )
{
    d->setCursorVisible( TRUE );
    if ( e->key() == Qt::Key_Enter || e->key() == Qt::Key_Return ) {
	const TQValidator * v = d->validator;
	if ( hasAcceptableInput() ) {
	    emit returnPressed();
	}
#ifndef TQT_NO_VALIDATOR
	else if ( v && v->validate( d->text, d->cursor ) != TQValidator::Acceptable ) {
	    TQString vstr = d->text;
	    v->fixup( vstr );
	    if ( vstr != d->text ) {
		setText( vstr );
		if ( hasAcceptableInput() )
		    emit returnPressed();
	    }
	}
#endif
	e->ignore();
	return;
    }
    if ( !d->readOnly ) {
	TQString t = e->text();
	if ( !t.isEmpty() && (!e->ascii() || e->ascii()>=32) &&
	     e->key() != Qt::Key_Delete &&
	     e->key() != Qt::Key_Backspace ) {
#ifdef TQ_WS_X11
	    extern bool qt_hebrew_keyboard_hack;
	    if ( qt_hebrew_keyboard_hack ) {
		// the X11 keyboard tqlayout is broken and does not reverse
		// braces correctly. This is a hack to get halfway correct
		// behaviour
		if ( d->isRightToLeft() ) {
		    TQChar *c = (TQChar *)t.tqunicode();
		    int l = t.length();
		    while( l-- ) {
			if ( c->mirrored() )
			    *c = c->mirroredChar();
			c++;
		    }
		}
	    }
#endif
	    insert( t );
	    return;
	}
    }
    bool unknown = FALSE;
    if ( e->state() & ControlButton ) {
	switch ( e->key() ) {
	case Qt::Key_A:
#if defined(TQ_WS_X11)
	    home( e->state() & ShiftButton );
#else
	    selectAll();
#endif
	    break;
	case Qt::Key_B:
	    cursorForward( e->state() & ShiftButton, -1 );
	    break;
#ifndef TQT_NO_CLIPBOARD
	case Qt::Key_C:
	    copy();
	    break;
#endif
	case Qt::Key_D:
	    if ( !d->readOnly ) {
		del();
	    }
	    break;
	case Qt::Key_E:
	    end( e->state() & ShiftButton );
	    break;
	case Qt::Key_F:
	    cursorForward( e->state() & ShiftButton, 1 );
	    break;
	case Qt::Key_H:
	    if ( !d->readOnly ) {
		backspace();
	    }
	    break;
	case Qt::Key_K:
	    if ( !d->readOnly ) {
		int priorState = d->undoState;
		d->deselect();
		while ( d->cursor < (int) d->text.length() )
		    d->del();
		d->finishChange( priorState );
	    }
	    break;
#if defined(TQ_WS_X11)
        case Qt::Key_U:
	    if ( !d->readOnly )
		clear();
	    break;
#endif
#ifndef TQT_NO_CLIPBOARD
	case Qt::Key_V:
	    if ( !d->readOnly )
		paste();
	    break;
	case Qt::Key_X:
	    if ( !d->readOnly && d->hasSelectedText() && echoMode() == Normal ) {
		copy();
		del();
	    }
	    break;
#if defined (TQ_WS_WIN)
	case Qt::Key_Insert:
	    copy();
	    break;
#endif
#endif
	case Qt::Key_Delete:
	    if ( !d->readOnly ) {
		cursorWordForward( TRUE );
		del();
	    }
	    break;
	case Qt::Key_Backspace:
	    if ( !d->readOnly ) {
		cursorWordBackward( TRUE );
		del();
	    }
	    break;
	case Qt::Key_Right:
	case Qt::Key_Left:
	    if ( d->isRightToLeft() == (e->key() == Qt::Key_Right) ) {
	        if ( echoMode() == Normal )
		    cursorWordBackward( e->state() & ShiftButton );
		else
		    home( e->state() & ShiftButton );
	    } else {
		if ( echoMode() == Normal )
		    cursorWordForward( e->state() & ShiftButton );
		else
		    end( e->state() & ShiftButton );
	    }
	    break;
	case Qt::Key_Z:
	    if ( !d->readOnly ) {
		if(e->state() & ShiftButton)
		    redo();
		else
		    undo();
	    }
	    break;
	case Qt::Key_Y:
	    if ( !d->readOnly )
		redo();
	    break;
	default:
	    unknown = TRUE;
	}
    } else { // ### check for *no* modifier
	switch ( e->key() ) {
	case Qt::Key_Shift:
	    // ### TODO
	    break;
	case Qt::Key_Left:
	case Qt::Key_Right: {
	    int step =  (d->isRightToLeft() == (e->key() == Qt::Key_Right)) ? -1 : 1;
	    cursorForward( e->state() & ShiftButton, step );
	}
	break;
	case Qt::Key_Backspace:
	    if ( !d->readOnly ) {
		backspace();
	    }
	    break;
	case Qt::Key_Home:
#ifdef TQ_WS_MACX
	case Qt::Key_Up:
#endif
	    home( e->state() & ShiftButton );
	    break;
	case Qt::Key_End:
#ifdef TQ_WS_MACX
	case Qt::Key_Down:
#endif
	    end( e->state() & ShiftButton );
	    break;
	case Qt::Key_Delete:
	    if ( !d->readOnly ) {
#if defined (TQ_WS_WIN)
		if ( e->state() & ShiftButton ) {
		    cut();
		    break;
		}
#endif
		del();
	    }
	    break;
#if defined (TQ_WS_WIN)
	case Qt::Key_Insert:
	    if ( !d->readOnly && e->state() & ShiftButton )
		paste();
	    else
		unknown = TRUE;
	    break;
#endif
	case Qt::Key_F14: // Undo key on Sun keyboards
	    if ( !d->readOnly )
		undo();
	    break;
#ifndef TQT_NO_CLIPBOARD
	case Qt::Key_F16: // Copy key on Sun keyboards
	    copy();
	    break;
	case Qt::Key_F18: // Paste key on Sun keyboards
	    if ( !d->readOnly )
		paste();
	    break;
	case Qt::Key_F20: // Cut key on Sun keyboards
	    if ( !d->readOnly && hasSelectedText() && echoMode() == Normal ) {
		copy();
		del();
	    }
	    break;
#endif
	default:
	    unknown = TRUE;
	}
    }
    if ( e->key() == Qt::Key_Direction_L || e->key() == Qt::Key_Direction_R ) {
	d->direction = (e->key() == Qt::Key_Direction_L) ? TQChar::DirL : TQChar::DirR;
        d->updateTextLayout();
	update();
    }

    if ( unknown )
	e->ignore();
}

/*! \reimp
 */
void TQLineEdit::imStartEvent( TQIMEvent *e )
{
    if ( d->readOnly ) {
	e->ignore();
	return;
    }
    d->removeSelectedText();
    d->updateMicroFocusHint();
    d->imstart = d->imend = d->imselstart = d->imselend = d->cursor;
}

/*! \reimp
 */
void TQLineEdit::imComposeEvent( TQIMEvent *e )
{
    if ( d->readOnly ) {
	e->ignore();
	return;
    }
    d->text.tqreplace( d->imstart, d->imend - d->imstart, e->text() );
    d->imend = d->imstart + e->text().length();
    d->imselstart = d->imstart + e->cursorPos();
    d->imselend = d->imselstart + e->selectionLength();
    d->cursor = d->imstart + e->cursorPos();
    d->updateTextLayout();
    d->updateMicroFocusHint();
    update();
}

/*! \reimp
 */
void TQLineEdit::imEndEvent( TQIMEvent *e )
{
    if ( d->readOnly) {
	e->ignore();
	return;
    }
    d->text.remove( d->imstart, d->imend - d->imstart );
    d->cursor = d->imselstart = d->imselend = d->imend = d->imstart;
    d->textDirty = TRUE;
    insert( e->text() );
}

/*!\reimp
*/

void TQLineEdit::focusInEvent( TQFocusEvent* tqfe )
{
#ifdef USE_QT4
    if ( tqfe->reason() == TQFocusEvent::Tab ||
	 tqfe->reason() == TQFocusEvent::Backtab  ||
	 tqfe->reason() == TQFocusEvent::Shortcut )
#else // USE_QT4
    if ( tqfereason() == TQFocusEvent::Tab ||
	 TQFocusEvent::reason() == TQFocusEvent::Backtab  ||
	 TQFocusEvent::reason() == TQFocusEvent::Shortcut )
#endif // USE_QT4
	d->maskData ? d->moveCursor( d->nextMaskBlank( 0 ) ) : selectAll();
    if ( !d->cursorTimer ) {
	int cft = TQApplication::cursorFlashTime();
	d->cursorTimer = cft ? startTimer( cft/2 ) : -1;
    }
    if( !hasSelectedText() || tqstyle().tqstyleHint( TQStyle::SH_BlinkCursorWhenTextSelected ) )
	d->setCursorVisible( TRUE );
    d->updateMicroFocusHint();
}

/*!\reimp
*/

void TQLineEdit::focusOutEvent( TQFocusEvent* tqfe )
{
#ifdef USE_QT4
    if ( tqfe->reason() != TQFocusEvent::ActiveWindow &&
	 tqfe->reason() != TQFocusEvent::Popup )
#else // USE_QT4
    if ( TQFocusEvent::reason() != TQFocusEvent::ActiveWindow &&
	 TQFocusEvent::reason() != TQFocusEvent::Popup )
#endif // USE_QT4
	deselect();
    d->setCursorVisible( FALSE );
    if ( d->cursorTimer > 0 )
	killTimer( d->cursorTimer );
    d->cursorTimer = 0;
#ifdef USE_QT4
    if (tqfe->reason() != TQFocusEvent::Popup)
#else // USE_QT4
    if (TQFocusEvent::reason() != TQFocusEvent::Popup)
#endif // USE_QT4
        emit lostFocus();
}

/*!\reimp
*/
void TQLineEdit::drawContents( TQPainter *p )
{
    const TQColorGroup& cg = tqcolorGroup();
    TQRect cr = contentsRect();
    TQFontMetrics fm = fontMetrics();
    TQRect lineRect( cr.x() + innerMargin, cr.y() + (cr.height() - fm.height() + 1) / 2,
		    cr.width() - 2*innerMargin, fm.height() );
    TQBrush bg = TQBrush( paletteBackgroundColor() );
    if ( paletteBackgroundPixmap() )
	bg = TQBrush( cg.background(), *paletteBackgroundPixmap() );
    else if ( !isEnabled() )
	bg = cg.brush( TQColorGroup::Background );
    TQPoint brushOrigin = p->brushOrigin();
    p->save();
    p->setClipRegion( TQRegion(cr) - lineRect );
    p->setBrushOrigin(brushOrigin - backgroundOffset());
    p->fillRect( cr, bg );
    p->restore();
    TQSharedDoubleBuffer buffer( p, lineRect.x(), lineRect.y(),
 				lineRect.width(), lineRect.height(),
 				hasFocus() ? TQSharedDoubleBuffer::Force : 0 );
    p = buffer.painter();
    brushOrigin = p->brushOrigin();
    p->setBrushOrigin(brushOrigin - backgroundOffset());
    p->fillRect( lineRect, bg );
    p->setBrushOrigin(brushOrigin);

    // locate cursor position
    int cix = 0;
    TQTextItem ci = d->textLayout.tqfindItem( d->cursor );
    if ( ci.isValid() ) {
	if ( d->cursor != (int)d->text.length() && d->cursor == ci.from() + ci.length()
	     && ci.isRightToLeft() != d->isRightToLeft() )
	    ci = d->textLayout.tqfindItem( d->cursor + 1 );
	cix = ci.x() + ci.cursorToX( d->cursor - ci.from() );
    }

    // horizontal scrolling
    int minLB = TQMAX( 0, -fm.minLeftBearing() );
    int minRB = TQMAX( 0, -fm.minRightBearing() );
    int widthUsed = d->textLayout.widthUsed() + 1 + minRB;
    if ( (minLB + widthUsed) <=  lineRect.width() ) {
	switch ( d->visualAlignment() ) {
	case TQt::AlignRight:
	    d->hscroll = widthUsed - lineRect.width() + 1;
	    break;
	case TQt::AlignHCenter:
	    d->hscroll = ( widthUsed - lineRect.width() ) / 2;
	    break;
	default:
	    d->hscroll = 0;
	    break;
	}
	d->hscroll -= minLB;
    } else if ( cix - d->hscroll >= lineRect.width() ) {
	d->hscroll = cix - lineRect.width() + 1;
    } else if ( cix - d->hscroll < 0 ) {
	d->hscroll = cix;
    } else if ( widthUsed - d->hscroll < lineRect.width() ) {
	d->hscroll = widthUsed - lineRect.width() + 1;
    } else if (d->hscroll < 0) {
        d->hscroll = 0;
    }
    // the y offset is there to keep the baseline constant in case we have script changes in the text.
    TQPoint topLeft = lineRect.topLeft() - TQPoint(d->hscroll, d->ascent-fm.ascent());

    // draw text, selections and cursors
    p->setPen( cg.text() );
    bool supressCursor = d->readOnly, hasRightToLeft = d->isRightToLeft();
    int textflags = 0;
    if ( font().underline() )
	textflags |= TQt::Underline;
    if ( font().strikeOut() )
	textflags |= TQt::StrikeOut;
    if ( font().overline() )
	textflags |= TQt::Overline;

    for ( int i = 0; i < d->textLayout.numItems(); i++ ) {
	TQTextItem ti = d->textLayout.itemAt( i );
	hasRightToLeft |= ti.isRightToLeft();
	int tix = topLeft.x() + ti.x();
	int first = ti.from();
	int last = ti.from() + ti.length() - 1;

	// text and selection
	if ( d->selstart < d->selend && (last >= d->selstart && first < d->selend ) ) {
	    TQRect highlight = TQRect( TQPoint( tix + ti.cursorToX( TQMAX( d->selstart - first, 0 ) ),
					     lineRect.top() ),
				     TQPoint( tix + ti.cursorToX( TQMIN( d->selend - first, last - first + 1 ) ) - 1,
					     lineRect.bottom() ) ).normalize();
	    p->save();
  	    p->setClipRegion( TQRegion( lineRect ) - highlight, TQPainter::CoordPainter );
 	    p->tqdrawTextItem( topLeft, ti, textflags );
 	    p->setClipRect( lineRect & highlight, TQPainter::CoordPainter );
	    p->fillRect( highlight, cg.highlight() );
 	    p->setPen( cg.highlightedText() );
	    p->tqdrawTextItem( topLeft, ti, textflags );
	    p->restore();
	} else {
	    p->tqdrawTextItem( topLeft, ti, textflags );
	}

	// input method edit area
	if ( d->imstart < d->imend && (last >= d->imstart && first < d->imend ) ) {
	    TQRect highlight = TQRect( TQPoint( tix + ti.cursorToX( TQMAX( d->imstart - first, 0 ) ), lineRect.top() ),
			      TQPoint( tix + ti.cursorToX( TQMIN( d->imend - first, last - first + 1 ) )-1, lineRect.bottom() ) ).normalize();
	    p->save();
 	    p->setClipRect( lineRect & highlight, TQPainter::CoordPainter );

	    int h1, s1, v1, h2, s2, v2;
	    TQT_TQCOLOR_OBJECT(cg.color( TQColorGroup::Base )).hsv( &h1, &s1, &v1 );
	    TQT_TQCOLOR_OBJECT(cg.color( TQColorGroup::Background )).hsv( &h2, &s2, &v2 );
	    TQColor imCol;
	    imCol.setHsv( h1, s1, ( v1 + v2 ) / 2 );
	    p->fillRect( highlight, imCol );
	    p->tqdrawTextItem( topLeft, ti, textflags );
	    p->restore();
	}

	// input method selection
	if ( d->imselstart < d->imselend && (last >= d->imselstart && first < d->imselend ) ) {
	    TQRect highlight = TQRect( TQPoint( tix + ti.cursorToX( TQMAX( d->imselstart - first, 0 ) ), lineRect.top() ),
			      TQPoint( tix + ti.cursorToX( TQMIN( d->imselend - first, last - first + 1 ) )-1, lineRect.bottom() ) ).normalize();
	    p->save();
	    p->setClipRect( lineRect & highlight, TQPainter::CoordPainter );
	    p->fillRect( highlight, cg.text() );
	    p->setPen( paletteBackgroundColor() );
	    p->tqdrawTextItem( topLeft, ti, textflags );
	    p->restore();
            supressCursor = TRUE;
	}

	// overwrite cursor
	if ( d->cursorVisible && d->maskData &&
	     d->selend <= d->selstart && (last >= d->cursor && first <= d->cursor ) ) {
	    TQRect highlight = TQRect( TQPoint( tix + ti.cursorToX( TQMAX( d->cursor - first, 0 ) ), lineRect.top() ),
				     TQPoint( tix + ti.cursorToX( TQMIN( d->cursor + 1 - first, last - first + 1 ) )-1, lineRect.bottom() ) ).normalize();
	    p->save();
	    p->setClipRect( lineRect & highlight, TQPainter::CoordPainter );
	    p->fillRect( highlight, cg.text() );
	    p->setPen( paletteBackgroundColor() );
	    p->tqdrawTextItem( topLeft, ti, textflags );
	    p->restore();
	    supressCursor = TRUE;
	}
    }

    // draw cursor
    if ( d->cursorVisible && !supressCursor ) {
	TQPoint from( topLeft.x() + cix, lineRect.top() );
	TQPoint to = from + TQPoint( 0, lineRect.height() );
	p->drawLine( from, to );
	if ( hasRightToLeft ) {
	    bool rtl = ci.isValid() ? ci.isRightToLeft() : TRUE;
	    to = from + TQPoint( (rtl ? -2 : 2), 2 );
	    p->drawLine( from, to );
	    from.ry() += 4;
	    p->drawLine( from, to );
	}
    }
    buffer.end();
}


#ifndef TQT_NO_DRAGANDDROP
/*!\reimp
*/
void TQLineEdit::dragMoveEvent( TQDragMoveEvent *e )
{
    if ( !d->readOnly && TQTextDrag::canDecode(e) ) {
	e->acceptAction();
	d->cursor = d->xToPos( e->pos().x() );
	d->cursorVisible = TRUE;
	update();
    }
}

/*!\reimp */
void TQLineEdit::dragEnterEvent( TQDragEnterEvent * e )
{
    TQLineEdit::dragMoveEvent( e );
}

/*!\reimp */
void TQLineEdit::dragLeaveEvent( TQDragLeaveEvent *)
{
    if ( d->cursorVisible ) {
	d->cursorVisible = FALSE;
	update();
    }
}

/*!\reimp */
void TQLineEdit::dropEvent( TQDropEvent* e )
{
    TQString str;
    // try text/plain
    TQCString plain = "plain";
    bool decoded = TQTextDrag::decode(e, str, plain);
    // otherwise we'll accept any kind of text (like text/uri-list)
    if (! decoded)
	decoded = TQTextDrag::decode(e, str);

    if ( decoded && !d->readOnly ) {
	if ( e->source() == this && e->action() == TQDropEvent::Copy )
 	    deselect();
	d->cursor =d->xToPos( e->pos().x() );
	int selStart = d->cursor;
	int oldSelStart = d->selstart;
	int oldSelEnd = d->selend;
	d->cursorVisible = FALSE;
	e->acceptAction();
	insert( str );
	if ( e->source() == this ) {
	    if ( e->action() == TQDropEvent::Move ) {
		if ( selStart > oldSelStart && selStart <= oldSelEnd )
		    setSelection( oldSelStart, str.length() );
		else if ( selStart > oldSelEnd )
		    setSelection( selStart - str.length(), str.length() );
		else
		    setSelection( selStart, str.length() );
	    } else {
		setSelection( selStart, str.length() );
	    }
	}
    } else {
	e->ignore();
	update();
    }
}

bool TQLineEditPrivate::drag()
{
    q->killTimer( dndTimer );
    dndTimer = 0;
    TQTextDrag *tdo = new TQTextDrag( q->selectedText(), q );

    TQGuardedPtr<TQLineEdit> gptr = q;
    bool r = tdo->drag();
    if ( !gptr )
        return FALSE;

    // ### fix the check TQDragObject::target() != q in TQt4 (should not be needed)
    if ( r && !readOnly && TQDragObject::target() != q ) {
	int priorState = undoState;
	removeSelectedText();
	finishChange( priorState );
    }
#ifndef TQT_NO_CURSOR
    q->setCursor( readOnly ? Qt::ArrowCursor : Qt::IBeamCursor );
#endif
    return TRUE;
}

#endif // TQT_NO_DRAGANDDROP

enum { IdUndo, IdRedo, IdSep1, IdCut, IdCopy, IdPaste, IdClear, IdSep2, IdSelectAll };

/*!\reimp
*/
void TQLineEdit::contextMenuEvent( TQContextMenuEvent * e )
{
#ifndef TQT_NO_POPUPMENU
    d->separate();
    TQPopupMenu *menu = createPopupMenu();
    if (!menu)
        return;
    TQGuardedPtr<TQPopupMenu> popup = menu;
    TQGuardedPtr<TQLineEdit> that = this;
    TQPoint pos = e->reason() == TQContextMenuEvent::Mouse ? e->globalPos() :
		 mapToGlobal( TQPoint(e->pos().x(), 0) ) + TQPoint( width() / 2, height() / 2 );
    int r = popup->exec( pos );
    delete (TQPopupMenu*)popup;
    if ( that && d->menuId ) {
	switch ( d->menuId - r ) {
	case IdClear: clear(); break;
	case IdSelectAll: selectAll(); break;
	case IdUndo: undo(); break;
	case IdRedo: redo(); break;
#ifndef TQT_NO_CLIPBOARD
	case IdCut: cut(); break;
	case IdCopy: copy(); break;
	case IdPaste: paste(); break;
#endif
	default:
	    ; // nothing selected or lineedit destroyed. Be careful.
	}
    }
#endif //TQT_NO_POPUPMENU
}

/*!
    This function is called to create the popup menu which is shown
    when the user clicks on the line edit with the right mouse button.
    If you want to create a custom popup menu, reimplement this
    function and return the popup menu you create. The popup menu's
    ownership is transferred to the caller.
*/

TQPopupMenu *TQLineEdit::createPopupMenu()
{
#ifndef TQT_NO_POPUPMENU
    TQPopupMenu *popup = new TQPopupMenu( this, "qt_edit_menu" );
    int id = d->menuId = popup->insertItem( tr( "&Undo" ) + ACCEL_KEY( Z ) );
    popup->insertItem( tr( "&Redo" ) + ACCEL_KEY( Y ) );
    popup->insertSeparator();
    popup->insertItem( tr( "Cu&t" ) + ACCEL_KEY( X ) );
    popup->insertItem( tr( "&Copy" ) + ACCEL_KEY( C ) );
    popup->insertItem( tr( "&Paste" ) + ACCEL_KEY( V ) );
    popup->insertItem( tr( "Clear" ) );
    popup->insertSeparator();
    popup->insertItem( tr( "Select All" )
#ifndef TQ_WS_X11
    + ACCEL_KEY( A )
#endif
	);
    popup->setItemEnabled( id - IdUndo, d->isUndoAvailable() );
    popup->setItemEnabled( id - IdRedo, d->isRedoAvailable() );
#ifndef TQT_NO_CLIPBOARD
    popup->setItemEnabled( id - IdCut, !d->readOnly && d->hasSelectedText() );
    popup->setItemEnabled( id - IdCopy, d->hasSelectedText() );
    popup->setItemEnabled( id - IdPaste, !d->readOnly && !TQApplication::tqclipboard()->text().isEmpty() );
#else
    popup->setItemVisible( id - IdCut, FALSE );
    popup->setItemVisible( id - IdCopy, FALSE );
    popup->setItemVisible( id - IdPaste, FALSE );
#endif
    popup->setItemEnabled( id - IdClear, !d->readOnly && !d->text.isEmpty() );
    popup->setItemEnabled( id - IdSelectAll, !d->text.isEmpty() && !d->allSelected() );
    return popup;
#else
    return 0;
#endif
}

/*! \reimp */
void TQLineEdit::windowActivationChange( bool b )
{
    //### remove me with WHighlightSelection attribute
    if ( tqpalette().active() != tqpalette().inactive() )
	update();
    TQWidget::windowActivationChange( b );
}

/*! \reimp */

void TQLineEdit::setPalette( const TQPalette & p )
{
    //### remove me with WHighlightSelection attribute
    TQWidget::setPalette( p );
    update();
}

/*!
  \obsolete
  \fn void TQLineEdit::repaintArea( int from, int to )
  Repaints all characters from \a from to \a to. If cursorPos is
  between from and to, ensures that cursorPos is visible.
*/

/*! \reimp
 */
void TQLineEdit::setFont( const TQFont & f )
{
    TQWidget::setFont( f );
    d->updateTextLayout();
}

/*! \obsolete
*/
int TQLineEdit::characterAt( int xpos, TQChar *chr ) const
{
    int pos = d->xToPos( xpos + contentsRect().x() - d->hscroll + innerMargin );
    if ( chr && pos < (int) d->text.length() )
	*chr = d->text.at( pos );
    return pos;
}

/*!
    \internal

    Sets the password character to \a c.

    \sa passwordChar()
*/

void TQLineEdit::setPasswordChar( TQChar c )
{
    d->passwordChar = c;
}

/*!
    \internal

    Returns the password character.

    \sa setPasswordChar()
*/
TQChar TQLineEdit::passwordChar() const
{
    return ( d->passwordChar.isNull() ? TQChar( tqstyle().tqstyleHint( TQStyle::SH_LineEdit_PasswordCharacter, this ) ) : d->passwordChar );
}

void TQLineEdit::clipboardChanged()
{
}

void TQLineEditPrivate::init( const TQString& txt )
{
#ifndef TQT_NO_CURSOR
    q->setCursor( readOnly ? Qt::ArrowCursor : Qt::IBeamCursor );
#endif
    q->setFocusPolicy( Qt::StrongFocus );
    q->setInputMethodEnabled( TRUE );
    //   Specifies that this widget can use more, but is able to survive on
    //   less, horizontal space; and is fixed vertically.
    q->tqsetSizePolicy( TQSizePolicy( TQSizePolicy::Expanding, TQSizePolicy::Fixed ) );
    q->setBackgroundMode( PaletteBase );
    q->setKeyCompression( TRUE );
    q->setMouseTracking( TRUE );
    q->setAcceptDrops( TRUE );
    q->setFrame( TRUE );
    text = txt;
    updateTextLayout();
    cursor = text.length();
}

void TQLineEditPrivate::updateTextLayout()
{
    // tqreplace all non-printable characters with spaces (to avoid
    // drawing boxes when using fonts that don't have glyphs for such
    // characters)
    const TQString &displayText = q->displayText();
    TQString str(displayText.tqunicode(), displayText.length());
    TQChar* uc = (TQChar*)str.tqunicode();
    for (int i = 0; i < (int)str.length(); ++i) {
	if (! uc[i].isPrint())
	    uc[i] = TQChar(0x0020);
    }
    textLayout.setText( str, q->font() );
    textLayout.setDirection((TQChar::Direction)direction);
    textLayout.beginLayout(TQTextLayout::SingleLine);
    textLayout.beginLine( INT_MAX );
    while ( !textLayout.atEnd() )
	textLayout.addCurrentItem();
    ascent = 0;
    textLayout.endLine(0, 0, TQt::AlignLeft|TQt::SingleLine, &ascent);
}

int TQLineEditPrivate::xToPos( int x, TQTextItem::CursorPosition betweenOrOn ) const
{
    x-= q->contentsRect().x() - hscroll + innerMargin;
    for ( int i = 0; i < textLayout.numItems(); ++i ) {
	TQTextItem ti = textLayout.itemAt( i );
	TQRect tir = ti.tqrect();
	if ( x >= tir.left() && x <= tir.right() )
	    return ti.xToCursor( x - tir.x(), betweenOrOn ) + ti.from();
    }
    return x < 0 ? 0 : text.length();
}


TQRect TQLineEditPrivate::cursorRect() const
{
    TQRect cr = q->contentsRect();
    int cix = cr.x() - hscroll + innerMargin;
    TQTextItem ci = textLayout.tqfindItem( cursor );
    if ( ci.isValid() ) {
	if ( cursor != (int)text.length() && cursor == ci.from() + ci.length()
	     && ci.isRightToLeft() != isRightToLeft() )
	    ci = textLayout.tqfindItem( cursor + 1 );
	cix += ci.x() + ci.cursorToX( cursor - ci.from() );
    }
    int ch = q->fontMetrics().height();
    return TQRect( cix-4, cr.y() + ( cr.height() -  ch + 1) / 2, 8, ch + 1 );
}

void TQLineEditPrivate::updateMicroFocusHint()
{
    if ( q->hasFocus() ) {
	TQRect r = cursorRect();
	q->setMicroFocusHint( r.x(), r.y(), r.width(), r.height() );
    }
}

void TQLineEditPrivate::moveCursor( int pos, bool mark )
{
    if ( pos != cursor )
	separate();
    if ( maskData && pos > cursor )
	pos = nextMaskBlank( pos );
    else if ( maskData && pos < cursor )
	pos = prevMaskBlank( pos );
    bool fullUpdate = mark || hasSelectedText();
    if ( mark ) {
	int anchor;
	if ( selend > selstart && cursor == selstart )
	    anchor = selend;
	else if ( selend > selstart && cursor == selend )
	    anchor = selstart;
	else
	    anchor = cursor;
	selstart = TQMIN( anchor, pos );
	selend = TQMAX( anchor, pos );
    } else {
	deselect();
    }
    if ( fullUpdate ) {
	cursor = pos;
	q->update();
    } else {
	setCursorVisible( FALSE );
	cursor = pos;
	setCursorVisible( TRUE );
    }
    updateMicroFocusHint();
    if ( mark && !q->tqstyle().tqstyleHint( TQStyle::SH_BlinkCursorWhenTextSelected ) )
	setCursorVisible( FALSE );
    if ( mark || selDirty ) {
	selDirty = FALSE;
	emit q->selectionChanged();
    }
}

void TQLineEditPrivate::finishChange( int validateFromState, bool setModified )
{
    bool lineDirty = selDirty;
    if ( textDirty ) {
	// do validation
	bool wasValidInput = validInput;
	validInput = TRUE;
#ifndef TQT_NO_VALIDATOR
	if ( validator && validateFromState >= 0 ) {
	    TQString textCopy = text;
	    int cursorCopy = cursor;
	    validInput = ( validator->validate( textCopy, cursorCopy ) != TQValidator::Invalid );
	    if ( validInput ) {
		if ( text != textCopy ) {
		    q->setText( textCopy );
		    cursor = cursorCopy;
		    return;
		}
		cursor = cursorCopy;
	    }
	}
#endif
	if ( validateFromState >= 0 && wasValidInput && !validInput ) {
	    undo( validateFromState );
	    history.resize( undoState );
	    validInput = TRUE;
	    textDirty = setModified = FALSE;
	}
	updateTextLayout();
	updateMicroFocusHint();
	lineDirty |= textDirty;
	if ( setModified )
	    modified = TRUE;
	if ( textDirty ) {
	    textDirty = FALSE;
	    emit q->textChanged( maskData ? stripString(text) : text );
	}
#if defined(TQT_ACCESSIBILITY_SUPPORT)
	TQAccessible::updateAccessibility( q, 0, TQAccessible::ValueChanged );
#endif
    }
    if ( selDirty ) {
	selDirty = FALSE;
	emit q->selectionChanged();
    }
    if ( lineDirty || !setModified )
	q->update();
}

void TQLineEditPrivate::setText( const TQString& txt )
{
    deselect();
    TQString oldText = text;
    if ( maskData ) {
	text = maskString( 0, txt, TRUE );
	text += clearString( text.length(), maxLength - text.length() );
    } else {
 	text = txt.isEmpty() ? txt : TQT_TQSTRING(txt.left( maxLength ));
    }
    history.clear();
    undoState = 0;
    cursor = text.length();
    textDirty = ( oldText != text );
}


void TQLineEditPrivate::setCursorVisible( bool visible )
{
    if ( (bool)cursorVisible == visible )
	return;
    if ( cursorTimer )
	cursorVisible = visible;
    TQRect r = cursorRect();
    if ( maskData || !q->contentsRect().tqcontains( r ) )
	q->update();
    else
	q->update( r );
}

void TQLineEditPrivate::addCommand( const Command& cmd )
{
    if ( separator && undoState && history[undoState-1].type != Separator ) {
	history.resize( undoState + 2 );
	history[undoState++] = Command( Separator, 0, 0 );
    } else {
	history.resize( undoState + 1);
    }
    separator = FALSE;
    history[ undoState++ ] = cmd;
}

void TQLineEditPrivate::insert( const TQString& s )
{
    if ( maskData ) {
	TQString ms = maskString( cursor, s );
	for ( int i = 0; i < (int) ms.length(); ++i ) {
	    addCommand ( Command( DeleteSelection, cursor+i, text.at(cursor+i) ) );
	    addCommand( Command( Insert, cursor+i, ms.at(i) ) );
	}
	text.tqreplace( cursor, ms.length(), ms );
	cursor += ms.length();
	cursor = nextMaskBlank( cursor );
    } else {
	int remaining = maxLength - text.length();
	text.insert( cursor, s.left(remaining) );
	for ( int i = 0; i < (int) s.left(remaining).length(); ++i )
	    addCommand( Command( Insert, cursor++, s.at(i) ) );
    }
    textDirty = TRUE;
}

void TQLineEditPrivate::del( bool wasBackspace )
{
    if ( cursor < (int) text.length() ) {
	addCommand ( Command( (CommandType)((maskData?2:0)+(wasBackspace?Remove:Delete)), cursor, text.at(cursor) ) );
	if ( maskData ) {
	    text.tqreplace( cursor, 1, clearString( cursor, 1 ) );
	    addCommand( Command( Insert, cursor, text.at( cursor ) ) );
	} else {
	    text.remove( cursor, 1 );
	}
	textDirty = TRUE;
    }
}

void TQLineEditPrivate::removeSelectedText()
{
    if ( selstart < selend && selend <= (int) text.length() ) {
	separate();
	int i ;
	if ( selstart <= cursor && cursor < selend ) {
	    // cursor is within the selection. Split up the commands
	    // to be able to restore the correct cursor position
	    for ( i = cursor; i >= selstart; --i )
		addCommand ( Command( DeleteSelection, i, text.at(i) ) );
	    for ( i = selend - 1; i > cursor; --i )
		addCommand ( Command( DeleteSelection, i - cursor + selstart - 1, text.at(i) ) );
	} else {
	    for ( i = selend-1; i >= selstart; --i )
		addCommand ( Command( RemoveSelection, i, text.at(i) ) );
	}
	if ( maskData ) {
	    text.tqreplace( selstart, selend - selstart,  clearString( selstart, selend - selstart ) );
	    for ( int i = 0; i < selend - selstart; ++i )
		addCommand( Command( Insert, selstart + i, text.at( selstart + i ) ) );
	} else {
	    text.remove( selstart, selend - selstart );
	}
	if ( cursor > selstart )
	    cursor -= TQMIN( cursor, selend ) - selstart;
	deselect();
	textDirty = TRUE;
    }
}

void TQLineEditPrivate::parseInputMask( const TQString &maskFields )
{
    if ( maskFields.isEmpty() || maskFields.section( ';', 0, 0 ).isEmpty() ) {
	if ( maskData ) {
	    delete [] maskData;
	    maskData = 0;
	    maxLength = 32767;
	    q->setText( TQString::null );
	}
	return;
    }

    inputMask =  maskFields.section( ';', 0, 0 );
    blank = maskFields.section( ';', 1, 1 ).at(0);
    if ( blank.isNull() )
	blank = ' ';

    // calculate maxLength / maskData length
    maxLength = 0;
    TQChar c = 0;
    uint i;
    for ( i=0; i<inputMask.length(); i++ ) {
	c = inputMask.at(i);
	if ( i > 0 && inputMask.at( i-1 ) == '\\' ) {
	    maxLength++;
	    continue;
	}
	if ( c != '\\' && c != '!' &&
	     c != '<' && c != '>' &&
	     c != '{' && c != '}' &&
	     c != '[' && c != ']' )
	    maxLength++;
    }

    delete [] maskData;
    maskData = new MaskInputData[ maxLength ];

    MaskInputData::Casemode m = MaskInputData::NoCaseMode;
    c = 0;
    bool s;
    bool escape = FALSE;
    int index = 0;
    for ( i = 0; i < inputMask.length(); i++ ) {
	c = inputMask.at(i);
	if ( escape ) {
	    s = TRUE;
	    maskData[ index ].maskChar = c;
	    maskData[ index ].separator = s;
	    maskData[ index ].caseMode = m;
	    index++;
	    escape = FALSE;
	} else if ( c == '<' || c == '>' || c == '!') {
	    switch ( c ) {
	    case '<':
		m = MaskInputData::Lower;
		break;
	    case '>':
		m = MaskInputData::Upper;
		break;
	    case '!':
		m = MaskInputData::NoCaseMode;
		break;
	    }
	} else if ( c != '{' && c != '}' && c != '[' && c != ']' ) {
	    switch ( c ) {
	    case 'A':
	    case 'a':
	    case 'N':
	    case 'n':
	    case 'X':
	    case 'x':
	    case '9':
	    case '0':
	    case 'D':
	    case 'd':
	    case '#':
		s = FALSE;
		break;
	    case '\\':
		escape = TRUE;
	    default:
		s = TRUE;
		break;
	    }

	    if ( !escape ) {
		maskData[ index ].maskChar = c;
		maskData[ index ].separator = s;
		maskData[ index ].caseMode = m;
		index++;
	    }
	}
    }
    q->setText( TQString::null );
}


/* checks if the key is valid compared to the inputMask */
bool TQLineEditPrivate::isValidInput( TQChar key, TQChar tqmask ) const
{
    switch ( tqmask ) {
    case 'A':
	if ( key.isLetter() && key != blank )
	    return TRUE;
	break;
    case 'a':
	if ( key.isLetter() || key == blank )
	    return TRUE;
	break;
    case 'N':
	if ( key.isLetterOrNumber() && key != blank )
	    return TRUE;
	break;
    case 'n':
	if ( key.isLetterOrNumber() || key == blank )
	    return TRUE;
	break;
    case 'X':
	if ( key.isPrint() && key != blank )
	    return TRUE;
	break;
    case 'x':
	if ( key.isPrint() || key == blank )
	    return TRUE;
	break;
    case '9':
	if ( key.isNumber() && key != blank )
	    return TRUE;
	break;
    case '0':
	if ( key.isNumber() || key == blank )
	    return TRUE;
	break;
    case 'D':
	if ( key.isNumber() && key.digitValue() > 0 && key != blank )
	    return TRUE;
	break;
    case 'd':
	if ( (key.isNumber() && key.digitValue() > 0) || key == blank )
	    return TRUE;
	break;
    case '#':
	if ( key.isNumber() || key == '+' || key == '-' || key == blank )
	    return TRUE;
	break;
    default:
	break;
    }
    return FALSE;
}

/*
  Applies the inputMask on \a str starting from position \a pos in the tqmask. \a clear
  specifies from where characters should be gotten when a separator is met in \a str - TRUE means
  that blanks will be used, FALSE that previous input is used.
  Calling this when no inputMask is set is undefined.
*/
TQString TQLineEditPrivate::maskString( uint pos, const TQString &str, bool clear) const
{
    if ( pos >= (uint)maxLength )
	return TQString::tqfromLatin1("");

    TQString fill;
    fill = clear ? clearString( 0, maxLength ) : text;

    uint strIndex = 0;
    TQString s = TQString::tqfromLatin1("");
    int i = pos;
    while ( i < maxLength ) {
	if ( strIndex < str.length() ) {
	    if ( maskData[ i ].separator ) {
		s += maskData[ i ].maskChar;
		if ( str[(int)strIndex] == maskData[ i ].maskChar )
		    strIndex++;
		++i;
	    } else {
		if ( isValidInput( str[(int)strIndex], maskData[ i ].maskChar ) ) {
		    switch ( maskData[ i ].caseMode ) {
		    case MaskInputData::Upper:
			s += str[(int)strIndex].upper();
			break;
		    case MaskInputData::Lower:
			s += str[(int)strIndex].lower();
			break;
		    default:
			s += str[(int)strIndex];
		    }
		    ++i;
		} else {
		    // search for separator first
		    int n = tqfindInMask( i, TRUE, TRUE, str[(int)strIndex] );
		    if ( n != -1 ) {
			if ( str.length() != 1 || i == 0 || (i > 0 && (!maskData[i-1].separator || maskData[i-1].maskChar != str[(int)strIndex])) ) {
			    s += fill.mid( i, n-i+1 );
			    i = n + 1; // update i to tqfind + 1
			}
		    } else {
			// search for valid blank if not
			n = tqfindInMask( i, TRUE, FALSE, str[(int)strIndex] );
			if ( n != -1 ) {
			    s += fill.mid( i, n-i );
			    switch ( maskData[ n ].caseMode ) {
			    case MaskInputData::Upper:
				s += str[(int)strIndex].upper();
				break;
			    case MaskInputData::Lower:
				s += str[(int)strIndex].lower();
				break;
			    default:
				s += str[(int)strIndex];
			    }
			    i = n + 1; // updates i to tqfind + 1
			}
		    }
		}
		strIndex++;
	    }
	} else
	    break;
    }

    return s;
}



/*
  Returns a "cleared" string with only separators and blank chars.
  Calling this when no inputMask is set is undefined.
*/
TQString TQLineEditPrivate::clearString( uint pos, uint len ) const
{
    if ( pos >= (uint)maxLength )
	return TQString::null;

    TQString s;
    int end = TQMIN( (uint)maxLength, pos + len );
    for ( int i=pos; i<end; i++ )
	if ( maskData[ i ].separator )
	    s += maskData[ i ].maskChar;
	else
	    s += blank;

    return s;
}

/*
  Strips blank parts of the input in a TQLineEdit when an inputMask is set,
  separators are still included. Typically "127.0__.0__.1__" becomes "127.0.0.1".
*/
TQString TQLineEditPrivate::stripString( const TQString &str ) const
{
    if ( !maskData )
	return str;

    TQString s;
    int end = TQMIN( maxLength, (int)str.length() );
    for (int i=0; i < end; i++ )
	if ( maskData[ i ].separator )
	    s += maskData[ i ].maskChar;
	else
	    if ( str[i] != blank )
		s += str[i];

    return s;
}

/* searches forward/backward in maskData for either a separator or a blank */
int TQLineEditPrivate::tqfindInMask( int pos, bool forward, bool tqfindSeparator, TQChar searchChar ) const
{
    if ( pos >= maxLength || pos < 0 )
	return -1;

    int end = forward ? maxLength : -1;
    int step = forward ? 1 : -1;
    int i = pos;

    while ( i != end ) {
	if ( tqfindSeparator ) {
	    if ( maskData[ i ].separator && maskData[ i ].maskChar == searchChar )
		return i;
	} else {
	    if ( !maskData[ i ].separator ) {
 		if ( searchChar.isNull() )
		    return i;
 		else if ( isValidInput( searchChar, maskData[ i ].maskChar ) )
 		    return i;
	    }
	}
	i += step;
    }
    return -1;
}


#endif // TQT_NO_LINEEDIT