summaryrefslogtreecommitdiffstats
path: root/src/gui/widgets/qcombobox.cpp
blob: ced0d73ff0f26e1961092682408bc976734d5318 (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
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights.  These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "qcombobox.h"

#ifndef QT_NO_COMBOBOX
#include <qstylepainter.h>
#include <qlineedit.h>
#include <qapplication.h>
#include <qdesktopwidget.h>
#include <qlistview.h>
#include <qtableview.h>
#include <qitemdelegate.h>
#include <qmap.h>
#include <qmenu.h>
#include <qevent.h>
#include <qlayout.h>
#include <qscrollbar.h>
#include <qtreeview.h>
#include <qheaderview.h>
#include <qmath.h>
#ifndef QT_NO_IM
#include "qinputcontext.h"
#endif
#include <private/qapplication_p.h>
#include <private/qcombobox_p.h>
#include <private/qabstractitemmodel_p.h>
#include <private/qabstractscrollarea_p.h>
#include <private/qsoftkeymanager_p.h>
#include <qdebug.h>
#ifdef Q_WS_X11
#include <private/qt_x11_p.h>
#endif
#if defined(Q_WS_MAC) && !defined(QT_NO_EFFECTS) && !defined(QT_NO_STYLE_MAC)
#include <private/qcore_mac_p.h>
#include <QMacStyle>
#include <private/qt_cocoa_helpers_mac_p.h>
#endif
#ifndef QT_NO_EFFECTS
# include <private/qeffects_p.h>
#endif
#if defined(Q_WS_S60)
#include "private/qt_s60_p.h"
#endif

QT_BEGIN_NAMESPACE

QComboBoxPrivate::QComboBoxPrivate()
    : QWidgetPrivate(),
      model(0),
      lineEdit(0),
      container(0),
      insertPolicy(QComboBox::InsertAtBottom),
      sizeAdjustPolicy(QComboBox::AdjustToContentsOnFirstShow),
      minimumContentsLength(0),
      shownOnce(false),
      autoCompletion(true),
      duplicatesEnabled(false),
      frame(true),
      maxVisibleItems(10),
      maxCount(INT_MAX),
      modelColumn(0),
      inserting(false),
      arrowState(QStyle::State_None),
      hoverControl(QStyle::SC_None),
      autoCompletionCaseSensitivity(Qt::CaseInsensitive),
      indexBeforeChange(-1)
#ifndef QT_NO_COMPLETER
      , completer(0)
#endif
{
}

QStyleOptionMenuItem QComboMenuDelegate::getStyleOption(const QStyleOptionViewItem &option,
                                                        const QModelIndex &index) const
{
    QStyleOptionMenuItem menuOption;

    QPalette resolvedpalette = option.palette.resolve(QApplication::palette("QMenu"));
    QVariant value = index.data(Qt::ForegroundRole);
    if (value.canConvert<QBrush>()) {
        resolvedpalette.setBrush(QPalette::WindowText, qvariant_cast<QBrush>(value));
        resolvedpalette.setBrush(QPalette::ButtonText, qvariant_cast<QBrush>(value));
        resolvedpalette.setBrush(QPalette::Text, qvariant_cast<QBrush>(value));
    }
    menuOption.palette = resolvedpalette;
    menuOption.state = QStyle::State_None;
    if (mCombo->window()->isActiveWindow())
        menuOption.state = QStyle::State_Active;
    if ((option.state & QStyle::State_Enabled) && (index.model()->flags(index) & Qt::ItemIsEnabled))
        menuOption.state |= QStyle::State_Enabled;
    else
        menuOption.palette.setCurrentColorGroup(QPalette::Disabled);
    if (option.state & QStyle::State_Selected)
        menuOption.state |= QStyle::State_Selected;
    menuOption.checkType = QStyleOptionMenuItem::NonExclusive;
    menuOption.checked = mCombo->currentIndex() == index.row();
    if (QComboBoxDelegate::isSeparator(index))
        menuOption.menuItemType = QStyleOptionMenuItem::Separator;
    else
        menuOption.menuItemType = QStyleOptionMenuItem::Normal;

    QVariant variant = index.model()->data(index, Qt::DecorationRole);
    switch (variant.type()) {
    case QVariant::Icon:
        menuOption.icon = qvariant_cast<QIcon>(variant);
        break;
    case QVariant::Color: {
        static QPixmap pixmap(option.decorationSize);
        pixmap.fill(qvariant_cast<QColor>(variant));
        menuOption.icon = pixmap;
        break; }
    default:
        menuOption.icon = qvariant_cast<QPixmap>(variant);
        break;
    }
    if (index.data(Qt::BackgroundRole).canConvert<QBrush>()) {
        menuOption.palette.setBrush(QPalette::All, QPalette::Background,
                                    qvariant_cast<QBrush>(index.data(Qt::BackgroundRole)));
    }
    menuOption.text = index.model()->data(index, Qt::DisplayRole).toString()
                           .replace(QLatin1Char('&'), QLatin1String("&&"));
    menuOption.tabWidth = 0;
    menuOption.maxIconWidth =  option.decorationSize.width() + 4;
    menuOption.menuRect = option.rect;
    menuOption.rect = option.rect;

    // Make sure fonts set on the combo box also overrides the font for the popup menu.
    if (mCombo->testAttribute(Qt::WA_SetFont)
            || mCombo->testAttribute(Qt::WA_MacSmallSize)
            || mCombo->testAttribute(Qt::WA_MacMiniSize)
            || mCombo->font() != qt_app_fonts_hash()->value("QComboBox", QFont()))
        menuOption.font = mCombo->font();
    else
        menuOption.font = qt_app_fonts_hash()->value("QComboMenuItem", mCombo->font());

    menuOption.fontMetrics = QFontMetrics(menuOption.font);

    return menuOption;
}

#ifdef QT_KEYPAD_NAVIGATION
void QComboBoxPrivate::_q_completerActivated()
{
    Q_Q(QComboBox);
    if ( QApplication::keypadNavigationEnabled()
         && q->isEditable()
         && q->completer()
         && q->completer()->completionMode() == QCompleter::UnfilteredPopupCompletion ) {
        q->setEditFocus(false);
    }
}
#endif

void QComboBoxPrivate::updateArrow(QStyle::StateFlag state)
{
    Q_Q(QComboBox);
    if (arrowState == state)
        return;
    arrowState = state;
    QStyleOptionComboBox opt;
    q->initStyleOption(&opt);
    q->update(q->style()->subControlRect(QStyle::CC_ComboBox, &opt, QStyle::SC_ComboBoxArrow, q));
}

void QComboBoxPrivate::_q_modelReset()
{
    Q_Q(QComboBox);
    if (lineEdit) {
        lineEdit->setText(QString());
        updateLineEditGeometry();
    }
    if (currentIndex.row() != indexBeforeChange)
        _q_emitCurrentIndexChanged(currentIndex);
    q->update();
}

void QComboBoxPrivate::_q_modelDestroyed()
{
    model = QAbstractItemModelPrivate::staticEmptyModel();
}


//Windows and KDE allows menus to cover the taskbar, while GNOME and Mac don't
QRect QComboBoxPrivate::popupGeometry(int screen) const
{
#ifdef Q_WS_WIN
    return QApplication::desktop()->screenGeometry(screen);
#elif defined Q_WS_X11
    if (X11->desktopEnvironment == DE_KDE)
        return QApplication::desktop()->screenGeometry(screen);
    else
        return QApplication::desktop()->availableGeometry(screen);
#else
        return QApplication::desktop()->availableGeometry(screen);
#endif
}

bool QComboBoxPrivate::updateHoverControl(const QPoint &pos)
{

    Q_Q(QComboBox);
    QRect lastHoverRect = hoverRect;
    QStyle::SubControl lastHoverControl = hoverControl;
    bool doesHover = q->testAttribute(Qt::WA_Hover);
    if (lastHoverControl != newHoverControl(pos) && doesHover) {
        q->update(lastHoverRect);
        q->update(hoverRect);
        return true;
    }
    return !doesHover;
}

QStyle::SubControl QComboBoxPrivate::newHoverControl(const QPoint &pos)
{
    Q_Q(QComboBox);
    QStyleOptionComboBox opt;
    q->initStyleOption(&opt);
    opt.subControls = QStyle::SC_All;
    hoverControl = q->style()->hitTestComplexControl(QStyle::CC_ComboBox, &opt, pos, q);
    hoverRect = (hoverControl != QStyle::SC_None)
                   ? q->style()->subControlRect(QStyle::CC_ComboBox, &opt, hoverControl, q)
                   : QRect();
    return hoverControl;
}

/*
    Computes a size hint based on the maximum width
    for the items in the combobox.
*/
int QComboBoxPrivate::computeWidthHint() const
{
    Q_Q(const QComboBox);

    int width = 0;
    const int count = q->count();
    const int iconWidth = q->iconSize().width() + 4;
    const QFontMetrics &fontMetrics = q->fontMetrics();

    for (int i = 0; i < count; ++i) {
        const int textWidth = fontMetrics.width(q->itemText(i));
        if (q->itemIcon(i).isNull())
            width = (qMax(width, textWidth));
        else
            width = (qMax(width, textWidth + iconWidth));
    }

    QStyleOptionComboBox opt;
    q->initStyleOption(&opt);
    QSize tmp(width, 0);
    tmp = q->style()->sizeFromContents(QStyle::CT_ComboBox, &opt, tmp, q);
    return tmp.width();
}

QSize QComboBoxPrivate::recomputeSizeHint(QSize &sh) const
{
    Q_Q(const QComboBox);
    if (!sh.isValid()) {
        bool hasIcon = sizeAdjustPolicy == QComboBox::AdjustToMinimumContentsLengthWithIcon ? true : false;
        int count = q->count();
        QSize iconSize = q->iconSize();
        const QFontMetrics &fm = q->fontMetrics();

        // text width
        if (&sh == &sizeHint || minimumContentsLength == 0) {
            switch (sizeAdjustPolicy) {
            case QComboBox::AdjustToContents:
            case QComboBox::AdjustToContentsOnFirstShow:
                if (count == 0) {
                    sh.rwidth() = 7 * fm.width(QLatin1Char('x'));
                } else {
                    for (int i = 0; i < count; ++i) {
                        if (!q->itemIcon(i).isNull()) {
                            hasIcon = true;
                            sh.setWidth(qMax(sh.width(), fm.boundingRect(q->itemText(i)).width() + iconSize.width() + 4));
                        } else {
                            sh.setWidth(qMax(sh.width(), fm.boundingRect(q->itemText(i)).width()));
                        }
                    }
                }
                break;
            case QComboBox::AdjustToMinimumContentsLength:
                for (int i = 0; i < count && !hasIcon; ++i)
                    hasIcon = !q->itemIcon(i).isNull();
            default:
                ;
            }
        } else {
            for (int i = 0; i < count && !hasIcon; ++i)
                hasIcon = !q->itemIcon(i).isNull();
        }
        if (minimumContentsLength > 0)
            sh.setWidth(qMax(sh.width(), minimumContentsLength * fm.width(QLatin1Char('X')) + (hasIcon ? iconSize.width() + 4 : 0)));


        // height
        sh.setHeight(qMax(qCeil(QFontMetricsF(fm).height()), 14) + 2);
        if (hasIcon) {
            sh.setHeight(qMax(sh.height(), iconSize.height() + 2));
        }

        // add style and strut values
        QStyleOptionComboBox opt;
        q->initStyleOption(&opt);
        sh = q->style()->sizeFromContents(QStyle::CT_ComboBox, &opt, sh, q);
    }
    return sh.expandedTo(QApplication::globalStrut());
}

void QComboBoxPrivate::adjustComboBoxSize()
{
    viewContainer()->adjustSizeTimer.start(20, container);
}

void QComboBoxPrivate::updateLayoutDirection()
{
    Q_Q(const QComboBox);
    QStyleOptionComboBox opt;
    q->initStyleOption(&opt);
    Qt::LayoutDirection dir = Qt::LayoutDirection(
        q->style()->styleHint(QStyle::SH_ComboBox_LayoutDirection, &opt, q));
    if (lineEdit)
        lineEdit->setLayoutDirection(dir);
    if (container)
        container->setLayoutDirection(dir);
}


void QComboBoxPrivateContainer::timerEvent(QTimerEvent *timerEvent)
{
    if (timerEvent->timerId() == adjustSizeTimer.timerId()) {
        adjustSizeTimer.stop();
        if (combo->sizeAdjustPolicy() == QComboBox::AdjustToContents) {
            combo->updateGeometry();
            combo->adjustSize();
            combo->update();
        }
    }
}

void QComboBoxPrivateContainer::resizeEvent(QResizeEvent *e)
{
    QStyleOptionComboBox opt = comboStyleOption();
    if (combo->style()->styleHint(QStyle::SH_ComboBox_Popup, &opt, combo)) {
        QStyleOption myOpt;
        myOpt.initFrom(this);
        QStyleHintReturnMask mask;
        if (combo->style()->styleHint(QStyle::SH_Menu_Mask, &myOpt, this, &mask)) {
            setMask(mask.region);
        }
    } else {
        clearMask();
    }
    QFrame::resizeEvent(e);
}

void QComboBoxPrivateContainer::leaveEvent(QEvent *)
{
// On Mac using the Mac style we want to clear the selection
// when the mouse moves outside the popup.
#ifdef Q_WS_MAC
    QStyleOptionComboBox opt = comboStyleOption();
    if (combo->style()->styleHint(QStyle::SH_ComboBox_Popup, &opt, combo))
        view->clearSelection();
#endif
}

QComboBoxPrivateContainer::QComboBoxPrivateContainer(QAbstractItemView *itemView, QComboBox *parent)
    : QFrame(parent, Qt::Popup), combo(parent), view(0), top(0), bottom(0)
{
    // we need the combobox and itemview
    Q_ASSERT(parent);
    Q_ASSERT(itemView);

    setAttribute(Qt::WA_WindowPropagation);
    setAttribute(Qt::WA_X11NetWmWindowTypeCombo);

    // setup container
    blockMouseReleaseTimer.setSingleShot(true);

    // we need a vertical layout
    QBoxLayout *layout =  new QBoxLayout(QBoxLayout::TopToBottom, this);
    layout->setSpacing(0);
    layout->setMargin(0);

    // set item view
    setItemView(itemView);

    // add scroller arrows if style needs them
    QStyleOptionComboBox opt = comboStyleOption();
    const bool usePopup = combo->style()->styleHint(QStyle::SH_ComboBox_Popup, &opt, combo);
    if (usePopup) {
        top = new QComboBoxPrivateScroller(QAbstractSlider::SliderSingleStepSub, this);
        bottom = new QComboBoxPrivateScroller(QAbstractSlider::SliderSingleStepAdd, this);
        top->hide();
        bottom->hide();
    } else {
        setLineWidth(1);
    }

    setFrameStyle(combo->style()->styleHint(QStyle::SH_ComboBox_PopupFrameStyle, &opt, combo));

    if (top) {
        layout->insertWidget(0, top);
        connect(top, SIGNAL(doScroll(int)), this, SLOT(scrollItemView(int)));
    }
    if (bottom) {
        layout->addWidget(bottom);
        connect(bottom, SIGNAL(doScroll(int)), this, SLOT(scrollItemView(int)));
    }

    // Some styles (Mac) have a margin at the top and bottom of the popup.
    layout->insertSpacing(0, 0);
    layout->addSpacing(0);
    updateTopBottomMargin();
}

void QComboBoxPrivateContainer::scrollItemView(int action)
{
#ifndef QT_NO_SCROLLBAR
    if (view->verticalScrollBar())
        view->verticalScrollBar()->triggerAction(static_cast<QAbstractSlider::SliderAction>(action));
#endif
}

/*
    Hides or shows the scrollers when we emulate a popupmenu
*/
void QComboBoxPrivateContainer::updateScrollers()
{
#ifndef QT_NO_SCROLLBAR
    if (!top || !bottom)
        return;

    if (isVisible() == false)
        return;

    QStyleOptionComboBox opt = comboStyleOption();
    if (combo->style()->styleHint(QStyle::SH_ComboBox_Popup, &opt, combo) &&
        view->verticalScrollBar()->minimum() < view->verticalScrollBar()->maximum()) {

        bool needTop = view->verticalScrollBar()->value()
                       > (view->verticalScrollBar()->minimum() + spacing());
        bool needBottom = view->verticalScrollBar()->value()
                          < (view->verticalScrollBar()->maximum() - spacing()*2);
        if (needTop)
            top->show();
        else
            top->hide();
        if (needBottom)
            bottom->show();
        else
            bottom->hide();
    } else {
        top->hide();
        bottom->hide();
    }
#endif // QT_NO_SCROLLBAR
}

/*
    Cleans up when the view is destroyed.
*/
void QComboBoxPrivateContainer::viewDestroyed()
{
    view = 0;
    setItemView(new QComboBoxListView());
}

/*
    Returns the item view used for the combobox popup.
*/
QAbstractItemView *QComboBoxPrivateContainer::itemView() const
{
    return view;
}

/*!
    Sets the item view to be used for the combobox popup.
*/
void QComboBoxPrivateContainer::setItemView(QAbstractItemView *itemView)
{
    Q_ASSERT(itemView);

    // clean up old one
    if (view) {
        view->removeEventFilter(this);
        view->viewport()->removeEventFilter(this);
#ifndef QT_NO_SCROLLBAR
        disconnect(view->verticalScrollBar(), SIGNAL(valueChanged(int)),
                   this, SLOT(updateScrollers()));
        disconnect(view->verticalScrollBar(), SIGNAL(rangeChanged(int,int)),
                   this, SLOT(updateScrollers()));
#endif
        disconnect(view, SIGNAL(destroyed()),
                   this, SLOT(viewDestroyed()));

        delete view;
        view = 0;
    }

    // setup the item view
    view = itemView;
    view->setParent(this);
    view->setAttribute(Qt::WA_MacShowFocusRect, false);
    qobject_cast<QBoxLayout*>(layout())->insertWidget(top ? 2 : 0, view);
    view->setSizePolicy(QSizePolicy::Ignored, QSizePolicy::Ignored);
    view->installEventFilter(this);
    view->viewport()->installEventFilter(this);
    view->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
    QStyleOptionComboBox opt = comboStyleOption();
    const bool usePopup = combo->style()->styleHint(QStyle::SH_ComboBox_Popup, &opt, combo);
#ifndef QT_NO_SCROLLBAR
#ifndef Q_WS_S60
    if (usePopup)
        view->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
#endif
#endif
    if (combo->style()->styleHint(QStyle::SH_ComboBox_ListMouseTracking, &opt, combo) ||
        usePopup) {
        view->setMouseTracking(true);
    }
    view->setSelectionMode(QAbstractItemView::SingleSelection);
    view->setFrameStyle(QFrame::NoFrame);
    view->setLineWidth(0);
    view->setEditTriggers(QAbstractItemView::NoEditTriggers);
#ifndef QT_NO_SCROLLBAR
    connect(view->verticalScrollBar(), SIGNAL(valueChanged(int)),
            this, SLOT(updateScrollers()));
    connect(view->verticalScrollBar(), SIGNAL(rangeChanged(int,int)),
            this, SLOT(updateScrollers()));
#endif
    connect(view, SIGNAL(destroyed()),
            this, SLOT(viewDestroyed()));

#ifdef QT_SOFTKEYS_ENABLED
    selectAction = QSoftKeyManager::createKeyedAction(QSoftKeyManager::SelectSoftKey, Qt::Key_Select, itemView);
    cancelAction = QSoftKeyManager::createKeyedAction(QSoftKeyManager::CancelSoftKey, Qt::Key_Escape, itemView);
    addAction(selectAction);
    addAction(cancelAction);
#endif
}

/*!
    Returns the spacing between the items in the view.
*/
int QComboBoxPrivateContainer::spacing() const
{
    QListView *lview = qobject_cast<QListView*>(view);
    if (lview)
        return lview->spacing();
#ifndef QT_NO_TABLEVIEW
    QTableView *tview = qobject_cast<QTableView*>(view);
    if (tview)
        return tview->showGrid() ? 1 : 0;
#endif
    return 0;
}

void QComboBoxPrivateContainer::updateTopBottomMargin()
{
    if (!layout() || layout()->count() < 1)
        return;

    QBoxLayout *boxLayout = qobject_cast<QBoxLayout *>(layout());
    if (!boxLayout)
        return;

    const QStyleOptionComboBox opt = comboStyleOption();
    const bool usePopup = combo->style()->styleHint(QStyle::SH_ComboBox_Popup, &opt, combo);
    const int margin = usePopup ? combo->style()->pixelMetric(QStyle::PM_MenuVMargin, &opt, combo) : 0;

    QSpacerItem *topSpacer = boxLayout->itemAt(0)->spacerItem();
    if (topSpacer)
        topSpacer->changeSize(0, margin, QSizePolicy::Minimum, QSizePolicy::Fixed);

    QSpacerItem *bottomSpacer = boxLayout->itemAt(boxLayout->count() - 1)->spacerItem();
    if (bottomSpacer && bottomSpacer != topSpacer)
        bottomSpacer->changeSize(0, margin, QSizePolicy::Minimum, QSizePolicy::Fixed);

    boxLayout->invalidate();
}

void QComboBoxPrivateContainer::changeEvent(QEvent *e)
{
    if (e->type() == QEvent::StyleChange) {
        QStyleOptionComboBox opt = comboStyleOption();
        view->setMouseTracking(combo->style()->styleHint(QStyle::SH_ComboBox_ListMouseTracking, &opt, combo) ||
                               combo->style()->styleHint(QStyle::SH_ComboBox_Popup, &opt, combo));
        setFrameStyle(combo->style()->styleHint(QStyle::SH_ComboBox_PopupFrameStyle, &opt, combo));
#ifdef QT_SOFTKEYS_ENABLED
    } else if (e->type() == QEvent::LanguageChange) {
        selectAction->setText(QSoftKeyManager::standardSoftKeyText(QSoftKeyManager::SelectSoftKey));
        cancelAction->setText(QSoftKeyManager::standardSoftKeyText(QSoftKeyManager::CancelSoftKey));
#endif
    }

    QWidget::changeEvent(e);
}


bool QComboBoxPrivateContainer::eventFilter(QObject *o, QEvent *e)
{
    switch (e->type()) {
    case QEvent::ShortcutOverride:
        switch (static_cast<QKeyEvent*>(e)->key()) {
        case Qt::Key_Enter:
        case Qt::Key_Return:
#ifdef QT_KEYPAD_NAVIGATION
        case Qt::Key_Select:
#endif
            if (view->currentIndex().isValid() && (view->currentIndex().flags() & Qt::ItemIsEnabled) ) {
                combo->hidePopup();
                emit itemSelected(view->currentIndex());
            }
            return true;
        case Qt::Key_Down:
            if (!(static_cast<QKeyEvent*>(e)->modifiers() & Qt::AltModifier))
                break;
            // fall through
        case Qt::Key_F4:
        case Qt::Key_Escape:
            combo->hidePopup();
            return true;
        default:
            break;
        }
    break;
    case QEvent::MouseMove:
        if (isVisible()) {
            QMouseEvent *m = static_cast<QMouseEvent *>(e);
            QWidget *widget = static_cast<QWidget *>(o);
            QPoint vector = widget->mapToGlobal(m->pos()) - initialClickPosition;
            if (vector.manhattanLength() > 9 && blockMouseReleaseTimer.isActive())
                blockMouseReleaseTimer.stop();
            QModelIndex indexUnderMouse = view->indexAt(m->pos());
            if (indexUnderMouse.isValid() && indexUnderMouse != view->currentIndex()
                    && !QComboBoxDelegate::isSeparator(indexUnderMouse)) {
                view->setCurrentIndex(indexUnderMouse);
            }
        }
        break;
    case QEvent::MouseButtonRelease: {
        QMouseEvent *m = static_cast<QMouseEvent *>(e);
        if (isVisible() && view->rect().contains(m->pos()) && view->currentIndex().isValid()
            && !blockMouseReleaseTimer.isActive()
            && (view->currentIndex().flags() & Qt::ItemIsEnabled)
            && (view->currentIndex().flags() & Qt::ItemIsSelectable)) {
            combo->hidePopup();
            emit itemSelected(view->currentIndex());
            return true;
        }
        break;
    }
    default:
        break;
    }
    return QFrame::eventFilter(o, e);
}

void QComboBoxPrivateContainer::showEvent(QShowEvent *)
{
    combo->update();
}

void QComboBoxPrivateContainer::hideEvent(QHideEvent *)
{
    emit resetButton();
    combo->update();
    // QGraphicsScenePrivate::removePopup closes the combo box popup, it hides it non-explicitly.
    // Hiding/showing the QComboBox after this will unexpectedly show the popup as well.
    // Re-hiding the popup container makes sure it is explicitly hidden.
    if (QGraphicsProxyWidget *proxy = graphicsProxyWidget())
        proxy->hide();
}

void QComboBoxPrivateContainer::mousePressEvent(QMouseEvent *e)
{

    QStyleOptionComboBox opt = comboStyleOption();
    opt.subControls = QStyle::SC_All;
    opt.activeSubControls = QStyle::SC_ComboBoxArrow;
    QStyle::SubControl sc = combo->style()->hitTestComplexControl(QStyle::CC_ComboBox, &opt,
                                                           combo->mapFromGlobal(e->globalPos()),
                                                           combo);
    if ((combo->isEditable() && sc == QStyle::SC_ComboBoxArrow)
        || (!combo->isEditable() && sc != QStyle::SC_None))
        setAttribute(Qt::WA_NoMouseReplay);
    combo->hidePopup();
}

void QComboBoxPrivateContainer::mouseReleaseEvent(QMouseEvent *e)
{
    Q_UNUSED(e);
    if (!blockMouseReleaseTimer.isActive()){
        combo->hidePopup();
        emit resetButton();
    }
}

QStyleOptionComboBox QComboBoxPrivateContainer::comboStyleOption() const
{
    // ### This should use QComboBox's initStyleOption(), but it's protected
    // perhaps, we could cheat by having the QCombo private instead?
    QStyleOptionComboBox opt;
    opt.initFrom(combo);
    opt.subControls = QStyle::SC_All;
    opt.activeSubControls = QStyle::SC_None;
    opt.editable = combo->isEditable();
    return opt;
}

/*!
    \enum QComboBox::InsertPolicy

    This enum specifies what the QComboBox should do when a new string is
    entered by the user.

    \value NoInsert             The string will not be inserted into the combobox.
    \value InsertAtTop          The string will be inserted as the first item in the combobox.
    \value InsertAtCurrent      The current item will be \e replaced by the string.
    \value InsertAtBottom       The string will be inserted after the last item in the combobox.
    \value InsertAfterCurrent   The string is inserted after the current item in the combobox.
    \value InsertBeforeCurrent  The string is inserted before the current item in the combobox.
    \value InsertAlphabetically The string is inserted in the alphabetic order in the combobox.
    \omitvalue NoInsertion
    \omitvalue AtTop
    \omitvalue AtCurrent
    \omitvalue AtBottom
    \omitvalue AfterCurrent
    \omitvalue BeforeCurrent
*/

/*!
    \enum QComboBox::SizeAdjustPolicy

    This enum specifies how the size hint of the QComboBox should
    adjust when new content is added or content changes.

    \value AdjustToContents              The combobox will always adjust to the contents
    \value AdjustToContentsOnFirstShow   The combobox will adjust to its contents the first time it is shown.
    \value AdjustToMinimumContentsLength Use AdjustToContents or AdjustToContentsOnFirstShow instead.
    \value AdjustToMinimumContentsLengthWithIcon The combobox will adjust to \l minimumContentsLength plus space for an icon. For performance reasons use this policy on large models.
*/

/*!
    \fn void QComboBox::activated(int index)

    This signal is sent when the user chooses an item in the combobox.
    The item's \a index is passed. Note that this signal is sent even
    when the choice is not changed. If you need to know when the
    choice actually changes, use signal currentIndexChanged().

*/

/*!
    \fn void QComboBox::activated(const QString &text)

    This signal is sent when the user chooses an item in the combobox.
    The item's \a text is passed. Note that this signal is sent even
    when the choice is not changed. If you need to know when the
    choice actually changes, use signal currentIndexChanged().

*/

/*!
    \fn void QComboBox::highlighted(int index)

    This signal is sent when an item in the combobox popup list is
    highlighted by the user. The item's \a index is passed.
*/

/*!
    \fn void QComboBox::highlighted(const QString &text)

    This signal is sent when an item in the combobox popup list is
    highlighted by the user. The item's \a text is passed.
*/

/*!
    \fn void QComboBox::currentIndexChanged(int index)
    \since 4.1

    This signal is sent whenever the currentIndex in the combobox
    changes either through user interaction or programmatically. The
    item's \a index is passed or -1 if the combobox becomes empty or the
    currentIndex was reset.
*/

/*!
    \fn void QComboBox::currentIndexChanged(const QString &text)
    \since 4.1

    This signal is sent whenever the currentIndex in the combobox
    changes either through user interaction or programmatically.  The
    item's \a text is passed.
*/

/*!
    Constructs a combobox with the given \a parent, using the default
    model QStandardItemModel.
*/
QComboBox::QComboBox(QWidget *parent)
    : QWidget(*new QComboBoxPrivate(), parent, 0)
{
    Q_D(QComboBox);
    d->init();
}

/*!
  \internal
*/
QComboBox::QComboBox(QComboBoxPrivate &dd, QWidget *parent)
    : QWidget(dd, parent, 0)
{
    Q_D(QComboBox);
    d->init();
}

#ifdef QT3_SUPPORT
/*!
    Use one of the constructors that doesn't take the \a name
    argument and then use setObjectName() instead.
*/
QComboBox::QComboBox(QWidget *parent, const char *name)
    : QWidget(*new QComboBoxPrivate(), parent, 0)
{
    Q_D(QComboBox);
    d->init();
    setObjectName(QString::fromAscii(name));
}

/*!
    Use one of the constructors that doesn't take the \a name
    argument and then use setObjectName() instead.
*/
QComboBox::QComboBox(bool rw, QWidget *parent, const char *name)
    : QWidget(*new QComboBoxPrivate(), parent, 0)
{
    Q_D(QComboBox);
    d->init();
    setEditable(rw);
    setObjectName(QString::fromAscii(name));
}

#endif //QT3_SUPPORT

/*!
    \class QComboBox
    \brief The QComboBox widget is a combined button and popup list.

    \ingroup basicwidgets


    A QComboBox provides a means of presenting a list of options to the user
    in a way that takes up the minimum amount of screen space.

    A combobox is a selection widget that displays the current item,
    and can pop up a list of selectable items. A combobox may be editable,
    allowing the user to modify each item in the list.

    Comboboxes can contain pixmaps as well as strings; the
    insertItem() and setItemText() functions are suitably overloaded.
    For editable comboboxes, the function clearEditText() is provided,
    to clear the displayed string without changing the combobox's
    contents.

    There are two signals emitted if the current item of a combobox
    changes, currentIndexChanged() and activated().
    currentIndexChanged() is always emitted regardless if the change
    was done programmatically or by user interaction, while
    activated() is only emitted when the change is caused by user
    interaction. The highlighted() signal is emitted when the user
    highlights an item in the combobox popup list. All three signals
    exist in two versions, one with a QString argument and one with an
    \c int argument. If the user selects or highlights a pixmap, only
    the \c int signals are emitted. Whenever the text of an editable
    combobox is changed the editTextChanged() signal is emitted.

    When the user enters a new string in an editable combobox, the
    widget may or may not insert it, and it can insert it in several
    locations. The default policy is is \l AtBottom but you can change
    this using setInsertPolicy().

    It is possible to constrain the input to an editable combobox
    using QValidator; see setValidator(). By default, any input is
    accepted.

    A combobox can be populated using the insert functions,
    insertItem() and insertItems() for example. Items can be
    changed with setItemText(). An item can be removed with
    removeItem() and all items can be removed with clear(). The text
    of the current item is returned by currentText(), and the text of
    a numbered item is returned with text(). The current item can be
    set with setCurrentIndex(). The number of items in the combobox is
    returned by count(); the maximum number of items can be set with
    setMaxCount(). You can allow editing using setEditable(). For
    editable comboboxes you can set auto-completion using
    setCompleter() and whether or not the user can add duplicates
    is set with setDuplicatesEnabled().

    QComboBox uses the \l{Model/View Programming}{model/view
    framework} for its popup list and to store its items.  By default
    a QStandardItemModel stores the items and a QListView subclass
    displays the popuplist. You can access the model and view directly
    (with model() and view()), but QComboBox also provides functions
    to set and get item data (e.g., setItemData() and itemText()). You
    can also set a new model and view (with setModel() and setView()).
    For the text and icon in the combobox label, the data in the model
    that has the Qt::DisplayRole and Qt::DecorationRole is used.

    \image qstyle-comboboxes.png Comboboxes in the different built-in styles.

    \sa QLineEdit, QSpinBox, QRadioButton, QButtonGroup,
        {fowler}{GUI Design Handbook: Combo Box, Drop-Down List Box}
*/

void QComboBoxPrivate::init()
{
    Q_Q(QComboBox);
    q->setFocusPolicy(Qt::WheelFocus);
    q->setSizePolicy(QSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed,
                                 QSizePolicy::ComboBox));
    setLayoutItemMargins(QStyle::SE_ComboBoxLayoutItem);
    q->setModel(new QStandardItemModel(0, 1, q));
    if (!q->isEditable())
        q->setAttribute(Qt::WA_InputMethodEnabled, false);
    else
        q->setAttribute(Qt::WA_InputMethodEnabled);
}

QComboBoxPrivateContainer* QComboBoxPrivate::viewContainer()
{
    if (container)
        return container;

    Q_Q(QComboBox);
    container = new QComboBoxPrivateContainer(new QComboBoxListView(q), q);
    container->itemView()->setModel(model);
    container->itemView()->setTextElideMode(Qt::ElideMiddle);
    updateDelegate(true);
    updateLayoutDirection();
    updateViewContainerPaletteAndOpacity();
    QObject::connect(container, SIGNAL(itemSelected(QModelIndex)),
                     q, SLOT(_q_itemSelected(QModelIndex)));
    QObject::connect(container->itemView()->selectionModel(),
                     SIGNAL(currentChanged(QModelIndex,QModelIndex)),
                     q, SLOT(_q_emitHighlighted(QModelIndex)));
    QObject::connect(container, SIGNAL(resetButton()), q, SLOT(_q_resetButton()));
    return container;
}


void QComboBoxPrivate::_q_resetButton()
{
    updateArrow(QStyle::State_None);
}

void QComboBoxPrivate::_q_dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight)
{
    Q_Q(QComboBox);
    if (inserting || topLeft.parent() != root)
        return;

    if (sizeAdjustPolicy == QComboBox::AdjustToContents) {
        sizeHint = QSize();
        adjustComboBoxSize();
        q->updateGeometry();
    }

    if (currentIndex.row() >= topLeft.row() && currentIndex.row() <= bottomRight.row()) {
        if (lineEdit) {
            lineEdit->setText(q->itemText(currentIndex.row()));
            updateLineEditGeometry();
        }
        q->update();
    }
}

void QComboBoxPrivate::_q_rowsInserted(const QModelIndex &parent, int start, int end)
{
    Q_Q(QComboBox);
    if (inserting || parent != root)
        return;

    if (sizeAdjustPolicy == QComboBox::AdjustToContents) {
        sizeHint = QSize();
        adjustComboBoxSize();
        q->updateGeometry();
    }

    // set current index if combo was previously empty
    if (start == 0 && (end - start + 1) == q->count() && !currentIndex.isValid()) {
        q->setCurrentIndex(0);
        // need to emit changed if model updated index "silently"
    } else if (currentIndex.row() != indexBeforeChange) {
        q->update();
        _q_emitCurrentIndexChanged(currentIndex);
    }
}

void QComboBoxPrivate::_q_updateIndexBeforeChange()
{
    indexBeforeChange = currentIndex.row();
}

void QComboBoxPrivate::_q_rowsRemoved(const QModelIndex &parent, int /*start*/, int /*end*/)
{
    Q_Q(QComboBox);
    if (parent != root)
        return;

    if (sizeAdjustPolicy == QComboBox::AdjustToContents) {
        sizeHint = QSize();
        adjustComboBoxSize();
        q->updateGeometry();
    }

    // model has changed the currentIndex
    if (currentIndex.row() != indexBeforeChange) {
        if (!currentIndex.isValid() && q->count()) {
            q->setCurrentIndex(qMin(q->count() - 1, qMax(indexBeforeChange, 0)));
            return;
        }
        if (lineEdit) {
            lineEdit->setText(q->itemText(currentIndex.row()));
            updateLineEditGeometry();
        }
        q->update();
        _q_emitCurrentIndexChanged(currentIndex);
    }
}


void QComboBoxPrivate::updateViewContainerPaletteAndOpacity()
{
    if (!container)
        return;
    Q_Q(QComboBox);
    QStyleOptionComboBox opt;
    q->initStyleOption(&opt);
#ifndef QT_NO_MENU
    if (q->style()->styleHint(QStyle::SH_ComboBox_Popup, &opt, q)) {
        QMenu menu;
        menu.ensurePolished();
        container->setPalette(menu.palette());
        container->setWindowOpacity(menu.windowOpacity());
    } else
#endif
    {
        container->setPalette(q->palette());
        container->setWindowOpacity(1.0);
    }
    if (lineEdit)
        lineEdit->setPalette(q->palette());
}

/*!
    Initialize \a option with the values from this QComboBox. This method
    is useful for subclasses when they need a QStyleOptionComboBox, but don't want
    to fill in all the information themselves.

    \sa QStyleOption::initFrom()
*/
void QComboBox::initStyleOption(QStyleOptionComboBox *option) const
{
    if (!option)
        return;

    Q_D(const QComboBox);
    option->initFrom(this);
    option->editable = isEditable();
    option->frame = d->frame;
    if (hasFocus() && !option->editable)
        option->state |= QStyle::State_Selected;
    option->subControls = QStyle::SC_All;
    if (d->arrowState == QStyle::State_Sunken) {
        option->activeSubControls = QStyle::SC_ComboBoxArrow;
        option->state |= d->arrowState;
    } else {
        option->activeSubControls = d->hoverControl;
    }
    if (d->currentIndex.isValid()) {
        option->currentText = currentText();
        option->currentIcon = d->itemIcon(d->currentIndex);
    }
    option->iconSize = iconSize();
    if (d->container && d->container->isVisible())
        option->state |= QStyle::State_On;
}

void QComboBoxPrivate::updateLineEditGeometry()
{
    if (!lineEdit)
        return;

    Q_Q(QComboBox);
    QStyleOptionComboBox opt;
    q->initStyleOption(&opt);
    QRect editRect = q->style()->subControlRect(QStyle::CC_ComboBox, &opt,
                                                QStyle::SC_ComboBoxEditField, q);
    if (!q->itemIcon(q->currentIndex()).isNull()) {
        QRect comboRect(editRect);
        editRect.setWidth(editRect.width() - q->iconSize().width() - 4);
        editRect = QStyle::alignedRect(q->layoutDirection(), Qt::AlignRight,
                                       editRect.size(), comboRect);
    }
    lineEdit->setGeometry(editRect);
}

Qt::MatchFlags QComboBoxPrivate::matchFlags() const
{
    // Base how duplicates are determined on the autocompletion case sensitivity
    Qt::MatchFlags flags = Qt::MatchFixedString;
#ifndef QT_NO_COMPLETER
    if (!lineEdit->completer() || lineEdit->completer()->caseSensitivity() == Qt::CaseSensitive)
#endif
        flags |= Qt::MatchCaseSensitive;
    return flags;
}


void QComboBoxPrivate::_q_editingFinished()
{
    Q_Q(QComboBox);
    if (lineEdit && !lineEdit->text().isEmpty()) {
        //here we just check if the current item was entered
        const int index = q_func()->findText(lineEdit->text(), matchFlags());
        if (index != -1 && itemText(currentIndex) != lineEdit->text()) {
            q->setCurrentIndex(index);
            emitActivated(currentIndex);
        }
    }

}

void QComboBoxPrivate::_q_returnPressed()
{
    Q_Q(QComboBox);
    if (lineEdit && !lineEdit->text().isEmpty()) {
        if (q->count() >= maxCount && !(this->insertPolicy == QComboBox::InsertAtCurrent))
            return;
        lineEdit->deselect();
        lineEdit->end(false);
        QString text = lineEdit->text();
        // check for duplicates (if not enabled) and quit
        int index = -1;
        if (!duplicatesEnabled) {
            index = q->findText(text, matchFlags());
            if (index != -1) {
                q->setCurrentIndex(index);
                emitActivated(currentIndex);
                return;
            }
        }
        switch (insertPolicy) {
        case QComboBox::InsertAtTop:
            index = 0;
            break;
        case QComboBox::InsertAtBottom:
            index = q->count();
            break;
        case QComboBox::InsertAtCurrent:
        case QComboBox::InsertAfterCurrent:
        case QComboBox::InsertBeforeCurrent:
            if (!q->count() || !currentIndex.isValid())
                index = 0;
            else if (insertPolicy == QComboBox::InsertAtCurrent)
                q->setItemText(q->currentIndex(), text);
            else if (insertPolicy == QComboBox::InsertAfterCurrent)
                index = q->currentIndex() + 1;
            else if (insertPolicy == QComboBox::InsertBeforeCurrent)
                index = q->currentIndex();
            break;
        case QComboBox::InsertAlphabetically:
            index = 0;
            for (int i=0; i< q->count(); i++, index++ ) {
                if (text.toLower() < q->itemText(i).toLower())
                    break;
            }
            break;
        case QComboBox::NoInsert:
        default:
            break;
        }
        if (index >= 0) {
            q->insertItem(index, text);
            q->setCurrentIndex(index);
            emitActivated(currentIndex);
        }
    }
}

void QComboBoxPrivate::_q_itemSelected(const QModelIndex &item)
{
    Q_Q(QComboBox);
    if (item != currentIndex) {
        setCurrentIndex(item);
    } else if (lineEdit) {
        lineEdit->selectAll();
        lineEdit->setText(q->itemText(currentIndex.row()));
    }
    emitActivated(currentIndex);
}

void QComboBoxPrivate::emitActivated(const QModelIndex &index)
{
    Q_Q(QComboBox);
    if (!index.isValid())
        return;
    QString text(itemText(index));
    emit q->activated(index.row());
    emit q->activated(text);
}

void QComboBoxPrivate::_q_emitHighlighted(const QModelIndex &index)
{
    Q_Q(QComboBox);
    if (!index.isValid())
        return;
    QString text(itemText(index));
    emit q->highlighted(index.row());
    emit q->highlighted(text);
}

void QComboBoxPrivate::_q_emitCurrentIndexChanged(const QModelIndex &index)
{
    Q_Q(QComboBox);
    emit q->currentIndexChanged(index.row());
    emit q->currentIndexChanged(itemText(index));
}

QString QComboBoxPrivate::itemText(const QModelIndex &index) const
{
    return index.isValid() ? model->data(index, itemRole()).toString() : QString();
}

int QComboBoxPrivate::itemRole() const
{
    return q_func()->isEditable() ? Qt::EditRole : Qt::DisplayRole;
}

/*!
    Destroys the combobox.
*/
QComboBox::~QComboBox()
{
    // ### check delegateparent and delete delegate if us?
    Q_D(QComboBox);

    QT_TRY {
        disconnect(d->model, SIGNAL(destroyed()),
                this, SLOT(_q_modelDestroyed()));
    } QT_CATCH(...) {
        ; // objects can't throw in destructor
    }
}

/*!
    \property QComboBox::maxVisibleItems
    \brief the maximum allowed size on screen of the combo box, measured in items

    By default, this property has a value of 10.

    \note This property is ignored for non-editable comboboxes in styles that returns
    true for QStyle::SH_ComboBox_Popup such as the Mac style or the Gtk+ Style.
*/
int QComboBox::maxVisibleItems() const
{
    Q_D(const QComboBox);
    return d->maxVisibleItems;
}

void QComboBox::setMaxVisibleItems(int maxItems)
{
    Q_D(QComboBox);
    if (maxItems < 0) {
        qWarning("QComboBox::setMaxVisibleItems: "
                 "Invalid max visible items (%d) must be >= 0", maxItems);
        return;
    }
    d->maxVisibleItems = maxItems;
}

/*!
    \property QComboBox::count
    \brief the number of items in the combobox

    By default, for an empty combo box, this property has a value of 0.
*/
int QComboBox::count() const
{
    Q_D(const QComboBox);
    return d->model->rowCount(d->root);
}

/*!
    \property QComboBox::maxCount
    \brief the maximum number of items allowed in the combobox

    \note If you set the maximum number to be less then the current
    amount of items in the combobox, the extra items will be
    truncated. This also applies if you have set an external model on
    the combobox.

    By default, this property's value is derived from the highest
    signed integer available (typically 2147483647).
*/
void QComboBox::setMaxCount(int max)
{
    Q_D(QComboBox);
    if (max < 0) {
        qWarning("QComboBox::setMaxCount: Invalid count (%d) must be >= 0", max);
        return;
    }

    if (max < count())
        d->model->removeRows(max, count() - max, d->root);

    d->maxCount = max;
}

int QComboBox::maxCount() const
{
    Q_D(const QComboBox);
    return d->maxCount;
}

#ifndef QT_NO_COMPLETER

/*!
    \property QComboBox::autoCompletion
    \brief whether the combobox provides auto-completion for editable items
    \since 4.1
    \obsolete

    Use setCompleter() instead.

    By default, this property is true.

    \sa editable
*/

/*!
    \obsolete

    Use setCompleter() instead.
*/
bool QComboBox::autoCompletion() const
{
    Q_D(const QComboBox);
    return d->autoCompletion;
}

/*!
    \obsolete

    Use setCompleter() instead.
*/
void QComboBox::setAutoCompletion(bool enable)
{
    Q_D(QComboBox);

#ifdef QT_KEYPAD_NAVIGATION
    if (QApplication::keypadNavigationEnabled() && !enable && isEditable())
        qWarning("QComboBox::setAutoCompletion: auto completion is mandatory when combo box editable");
#endif

    d->autoCompletion = enable;
    if (!d->lineEdit)
        return;
    if (enable) {
        if (d->lineEdit->completer())
            return;
        d->completer = new QCompleter(d->model, d->lineEdit);
        d->completer->setCaseSensitivity(d->autoCompletionCaseSensitivity);
        d->completer->setCompletionMode(QCompleter::InlineCompletion);
        d->completer->setCompletionColumn(d->modelColumn);
        d->lineEdit->setCompleter(d->completer);
        d->completer->setWidget(this);
    } else {
        d->lineEdit->setCompleter(0);
    }
}

/*!
    \property QComboBox::autoCompletionCaseSensitivity
    \brief whether string comparisons are case-sensitive or case-insensitive for auto-completion
    \obsolete

    By default, this property is Qt::CaseInsensitive.

    Use setCompleter() instead. Case sensitivity of the auto completion can be
    changed using QCompleter::setCaseSensitivity().

    \sa autoCompletion
*/

/*!
    \obsolete

    Use setCompleter() and QCompleter::setCaseSensitivity() instead.
*/
Qt::CaseSensitivity QComboBox::autoCompletionCaseSensitivity() const
{
    Q_D(const QComboBox);
    return d->autoCompletionCaseSensitivity;
}

/*!
    \obsolete

    Use setCompleter() and QCompleter::setCaseSensitivity() instead.
*/
void QComboBox::setAutoCompletionCaseSensitivity(Qt::CaseSensitivity sensitivity)
{
    Q_D(QComboBox);
    d->autoCompletionCaseSensitivity = sensitivity;
    if (d->lineEdit && d->lineEdit->completer())
        d->lineEdit->completer()->setCaseSensitivity(sensitivity);
}

#endif // QT_NO_COMPLETER

/*!
    \property QComboBox::duplicatesEnabled
    \brief whether the user can enter duplicate items into the combobox

    Note that it is always possible to programmatically insert duplicate items into the
    combobox.

    By default, this property is false (duplicates are not allowed).
*/
bool QComboBox::duplicatesEnabled() const
{
    Q_D(const QComboBox);
    return d->duplicatesEnabled;
}

void QComboBox::setDuplicatesEnabled(bool enable)
{
    Q_D(QComboBox);
    d->duplicatesEnabled = enable;
}

/*!  \fn int QComboBox::findText(const QString &text, Qt::MatchFlags flags = Qt::MatchExactly|Qt::MatchCaseSensitive) const

  Returns the index of the item containing the given \a text; otherwise
  returns -1.

  The \a flags specify how the items in the combobox are searched.
*/

/*!
  Returns the index of the item containing the given \a data for the
  given \a role; otherwise returns -1.

  The \a flags specify how the items in the combobox are searched.
*/
int QComboBox::findData(const QVariant &data, int role, Qt::MatchFlags flags) const
{
    Q_D(const QComboBox);
    QModelIndexList result;
    QModelIndex start = d->model->index(0, d->modelColumn, d->root);
    result = d->model->match(start, role, data, 1, flags);
    if (result.isEmpty())
        return -1;
    return result.first().row();
}

/*!
    \property QComboBox::insertPolicy
    \brief the policy used to determine where user-inserted items should
    appear in the combobox

    The default value is \l AtBottom, indicating that new items will appear
    at the bottom of the list of items.

    \sa InsertPolicy
*/

QComboBox::InsertPolicy QComboBox::insertPolicy() const
{
    Q_D(const QComboBox);
    return d->insertPolicy;
}

void QComboBox::setInsertPolicy(InsertPolicy policy)
{
    Q_D(QComboBox);
    d->insertPolicy = policy;
}

/*!
    \property QComboBox::sizeAdjustPolicy
    \brief the policy describing how the size of the combobox changes
    when the content changes

    The default value is \l AdjustToContentsOnFirstShow.

    \sa SizeAdjustPolicy
*/

QComboBox::SizeAdjustPolicy QComboBox::sizeAdjustPolicy() const
{
    Q_D(const QComboBox);
    return d->sizeAdjustPolicy;
}

void QComboBox::setSizeAdjustPolicy(QComboBox::SizeAdjustPolicy policy)
{
    Q_D(QComboBox);
    if (policy == d->sizeAdjustPolicy)
        return;

    d->sizeAdjustPolicy = policy;
    d->sizeHint = QSize();
    d->adjustComboBoxSize();
    updateGeometry();
}

/*!
    \property QComboBox::minimumContentsLength
    \brief the minimum number of characters that should fit into the combobox.

    The default value is 0.

    If this property is set to a positive value, the
    minimumSizeHint() and sizeHint() take it into account.

    \sa sizeAdjustPolicy
*/
int QComboBox::minimumContentsLength() const
{
    Q_D(const QComboBox);
    return d->minimumContentsLength;
}

void QComboBox::setMinimumContentsLength(int characters)
{
    Q_D(QComboBox);
    if (characters == d->minimumContentsLength || characters < 0)
        return;

    d->minimumContentsLength = characters;

    if (d->sizeAdjustPolicy == AdjustToContents
            || d->sizeAdjustPolicy == AdjustToMinimumContentsLength
            || d->sizeAdjustPolicy == AdjustToMinimumContentsLengthWithIcon) {
        d->sizeHint = QSize();
        d->adjustComboBoxSize();
        updateGeometry();
    }
}

/*!
    \property QComboBox::iconSize
    \brief the size of the icons shown in the combobox.

    Unless explicitly set this returns the default value of the
    current style.  This size is the maximum size that icons can have;
    icons of smaller size are not scaled up.
*/

QSize QComboBox::iconSize() const
{
    Q_D(const QComboBox);
    if (d->iconSize.isValid())
        return d->iconSize;

    int iconWidth = style()->pixelMetric(QStyle::PM_SmallIconSize, 0, this);
    return QSize(iconWidth, iconWidth);
}

void QComboBox::setIconSize(const QSize &size)
{
    Q_D(QComboBox);
    if (size == d->iconSize)
        return;

    view()->setIconSize(size);
    d->iconSize = size;
    d->sizeHint = QSize();
    updateGeometry();
}

/*!
    \property QComboBox::editable
    \brief whether the combo box can be edited by the user

    By default, this property is false.
*/
bool QComboBox::isEditable() const
{
    Q_D(const QComboBox);
    return d->lineEdit != 0;
}

/*! \internal
    update the default delegate
    depending on the style's SH_ComboBox_Popup hint, we use a different default delegate.

    but we do not change the delegate is the combobox use a custom delegate,
    unless \a force is set to true.
 */
void QComboBoxPrivate::updateDelegate(bool force)
{
    Q_Q(QComboBox);
    QStyleOptionComboBox opt;
    q->initStyleOption(&opt);
    if (q->style()->styleHint(QStyle::SH_ComboBox_Popup, &opt, q)) {
        if (force || qobject_cast<QComboBoxDelegate *>(q->itemDelegate()))
            q->setItemDelegate(new QComboMenuDelegate(q->view(), q));
    } else {
        if (force || qobject_cast<QComboMenuDelegate *>(q->itemDelegate()))
            q->setItemDelegate(new QComboBoxDelegate(q->view(), q));
    }
}

QIcon QComboBoxPrivate::itemIcon(const QModelIndex &index) const
{
    QVariant decoration = model->data(index, Qt::DecorationRole);
    if (decoration.type() == QVariant::Pixmap)
        return QIcon(qvariant_cast<QPixmap>(decoration));
    else
        return qvariant_cast<QIcon>(decoration);
}

void QComboBox::setEditable(bool editable)
{
    Q_D(QComboBox);
    if (isEditable() == editable)
        return;

    d->updateDelegate();

    QStyleOptionComboBox opt;
    initStyleOption(&opt);
    if (editable) {
        if (style()->styleHint(QStyle::SH_ComboBox_Popup, &opt, this)) {
            d->viewContainer()->updateScrollers();
            view()->setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
        }
        QLineEdit *le = new QLineEdit(this);
        setLineEdit(le);
    } else {
        if (style()->styleHint(QStyle::SH_ComboBox_Popup, &opt, this)) {
            d->viewContainer()->updateScrollers();
            view()->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
        }
        setAttribute(Qt::WA_InputMethodEnabled, false);
        d->lineEdit->hide();
        d->lineEdit->deleteLater();
        d->lineEdit = 0;
    }

    d->viewContainer()->updateTopBottomMargin();
    if (!testAttribute(Qt::WA_Resized))
        adjustSize();
}

/*!
    Sets the line \a edit to use instead of the current line edit widget.

    The combo box takes ownership of the line edit.
*/
void QComboBox::setLineEdit(QLineEdit *edit)
{
    Q_D(QComboBox);
    if (!edit) {
        qWarning("QComboBox::setLineEdit: cannot set a 0 line edit");
        return;
    }

    if (edit == d->lineEdit)
        return;

    edit->setText(currentText());
    delete d->lineEdit;

    d->lineEdit = edit;
    if (d->lineEdit->parent() != this)
        d->lineEdit->setParent(this);
    connect(d->lineEdit, SIGNAL(returnPressed()), this, SLOT(_q_returnPressed()));
    connect(d->lineEdit, SIGNAL(editingFinished()), this, SLOT(_q_editingFinished()));
    connect(d->lineEdit, SIGNAL(textChanged(QString)), this, SIGNAL(editTextChanged(QString)));
#ifdef QT3_SUPPORT
    connect(d->lineEdit, SIGNAL(textChanged(QString)), this, SIGNAL(textChanged(QString)));
#endif
    d->lineEdit->setFrame(false);
    d->lineEdit->setContextMenuPolicy(Qt::NoContextMenu);
    d->lineEdit->setFocusProxy(this);
    d->lineEdit->setAttribute(Qt::WA_MacShowFocusRect, false);
#ifndef QT_NO_COMPLETER
    setAutoCompletion(d->autoCompletion);
#endif

#ifdef QT_KEYPAD_NAVIGATION
#ifndef QT_NO_COMPLETER
    if (QApplication::keypadNavigationEnabled()) {
        // Editable combo boxes will have a completer that is set to UnfilteredPopupCompletion.
        // This means that when the user enters edit mode they are immediately presented with a
        // list of possible completions.
        setAutoCompletion(true);
        if (d->completer) {
            d->completer->setCompletionMode(QCompleter::UnfilteredPopupCompletion);
            connect(d->completer, SIGNAL(activated(QModelIndex)), this, SLOT(_q_completerActivated()));
        }
    }
#endif
#endif

    setAttribute(Qt::WA_InputMethodEnabled);
    d->updateLayoutDirection();
    d->updateLineEditGeometry();
    if (isVisible())
        d->lineEdit->show();

    update();
}

/*!
    Returns the line edit used to edit items in the combobox, or 0 if there
    is no line edit.

    Only editable combo boxes have a line edit.
*/
QLineEdit *QComboBox::lineEdit() const
{
    Q_D(const QComboBox);
    return d->lineEdit;
}

#ifndef QT_NO_VALIDATOR
/*!
    \fn void QComboBox::setValidator(const QValidator *validator)

    Sets the \a validator to use instead of the current validator.
*/

void QComboBox::setValidator(const QValidator *v)
{
    Q_D(QComboBox);
    if (d->lineEdit)
        d->lineEdit->setValidator(v);
}

/*!
    Returns the validator that is used to constrain text input for the
    combobox.

    \sa editable
*/
const QValidator *QComboBox::validator() const
{
    Q_D(const QComboBox);
    return d->lineEdit ? d->lineEdit->validator() : 0;
}
#endif // QT_NO_VALIDATOR

#ifndef QT_NO_COMPLETER

/*!
    \fn void QComboBox::setCompleter(QCompleter *completer)
    \since 4.2

    Sets the \a completer to use instead of the current completer.
    If \a completer is 0, auto completion is disabled.

    By default, for an editable combo box, a QCompleter that
    performs case insensitive inline completion is automatically created.
*/
void QComboBox::setCompleter(QCompleter *c)
{
    Q_D(QComboBox);
    if (!d->lineEdit)
        return;
    d->lineEdit->setCompleter(c);
    if (c)
        c->setWidget(this);
}

/*!
    \since 4.2

    Returns the completer that is used to auto complete text input for the
    combobox.

    \sa editable
*/
QCompleter *QComboBox::completer() const
{
    Q_D(const QComboBox);
    return d->lineEdit ? d->lineEdit->completer() : 0;
}

#endif // QT_NO_COMPLETER

/*!
    Returns the item delegate used by the popup list view.

    \sa setItemDelegate()
*/
QAbstractItemDelegate *QComboBox::itemDelegate() const
{
    return view()->itemDelegate();
}

/*!
    Sets the item \a delegate for the popup list view.
    The combobox takes ownership of the delegate.

    \warning You should not share the same instance of a delegate between comboboxes,
    widget mappers or views. Doing so can cause incorrect or unintuitive editing behavior
    since each view connected to a given delegate may receive the
    \l{QAbstractItemDelegate::}{closeEditor()} signal, and attempt to access, modify or
    close an editor that has already been closed.

    \sa itemDelegate()
*/
void QComboBox::setItemDelegate(QAbstractItemDelegate *delegate)
{
    if (!delegate) {
        qWarning("QComboBox::setItemDelegate: cannot set a 0 delegate");
        return;
    }
    delete view()->itemDelegate();
    view()->setItemDelegate(delegate);
}

/*!
    Returns the model used by the combobox.
*/

QAbstractItemModel *QComboBox::model() const
{
    Q_D(const QComboBox);
    if (d->model == QAbstractItemModelPrivate::staticEmptyModel()) {
        QComboBox *that = const_cast<QComboBox*>(this);
        that->setModel(new QStandardItemModel(0, 1, that));
    }
    return d->model;
}

/*!
    Sets the model to be \a model. \a model must not be 0.
    If you want to clear the contents of a model, call clear().

    \sa clear()
*/
void QComboBox::setModel(QAbstractItemModel *model)
{
    Q_D(QComboBox);

    if (!model) {
        qWarning("QComboBox::setModel: cannot set a 0 model");
        return;
    }

#ifndef QT_NO_COMPLETER
    if (d->lineEdit && d->lineEdit->completer()
        && d->lineEdit->completer() == d->completer)
        d->lineEdit->completer()->setModel(model);
#endif
    if (d->model) {
        disconnect(d->model, SIGNAL(dataChanged(QModelIndex,QModelIndex)),
                   this, SLOT(_q_dataChanged(QModelIndex,QModelIndex)));
        disconnect(d->model, SIGNAL(rowsAboutToBeInserted(QModelIndex,int,int)),
                   this, SLOT(_q_updateIndexBeforeChange()));
        disconnect(d->model, SIGNAL(rowsInserted(QModelIndex,int,int)),
                   this, SLOT(_q_rowsInserted(QModelIndex,int,int)));
        disconnect(d->model, SIGNAL(rowsAboutToBeRemoved(QModelIndex,int,int)),
                   this, SLOT(_q_updateIndexBeforeChange()));
        disconnect(d->model, SIGNAL(rowsRemoved(QModelIndex,int,int)),
                   this, SLOT(_q_rowsRemoved(QModelIndex,int,int)));
        disconnect(d->model, SIGNAL(destroyed()),
                   this, SLOT(_q_modelDestroyed()));
        disconnect(d->model, SIGNAL(modelAboutToBeReset()),
                   this, SLOT(_q_updateIndexBeforeChange()));
        disconnect(d->model, SIGNAL(modelReset()),
                   this, SLOT(_q_modelReset()));
        if (d->model->QObject::parent() == this)
            delete d->model;
    }

    d->model = model;

    connect(model, SIGNAL(dataChanged(QModelIndex,QModelIndex)),
            this, SLOT(_q_dataChanged(QModelIndex,QModelIndex)));
    connect(model, SIGNAL(rowsAboutToBeInserted(QModelIndex,int,int)),
            this, SLOT(_q_updateIndexBeforeChange()));
    connect(model, SIGNAL(rowsInserted(QModelIndex,int,int)),
            this, SLOT(_q_rowsInserted(QModelIndex,int,int)));
    connect(model, SIGNAL(rowsAboutToBeRemoved(QModelIndex,int,int)),
            this, SLOT(_q_updateIndexBeforeChange()));
    connect(model, SIGNAL(rowsRemoved(QModelIndex,int,int)),
            this, SLOT(_q_rowsRemoved(QModelIndex,int,int)));
    connect(model, SIGNAL(destroyed()),
            this, SLOT(_q_modelDestroyed()));
    connect(model, SIGNAL(modelAboutToBeReset()),
            this, SLOT(_q_updateIndexBeforeChange()));
    connect(model, SIGNAL(modelReset()),
            this, SLOT(_q_modelReset()));

    if (d->container)
        d->container->itemView()->setModel(model);

    bool currentReset = false;

    if (count()) {
        for (int pos=0; pos < count(); pos++) {
            if (d->model->index(pos, d->modelColumn, d->root).flags() & Qt::ItemIsEnabled) {
                setCurrentIndex(pos);
                currentReset = true;
                break;
            }
        }
    }

    if (!currentReset)
        setCurrentIndex(-1);

    d->modelChanged();
}

/*!
    Returns the root model item index for the items in the combobox.

    \sa setRootModelIndex()
*/

QModelIndex QComboBox::rootModelIndex() const
{
    Q_D(const QComboBox);
    return QModelIndex(d->root);
}

/*!
    Sets the root model item \a index for the items in the combobox.

    \sa rootModelIndex()
*/
void QComboBox::setRootModelIndex(const QModelIndex &index)
{
    Q_D(QComboBox);
    d->root = QPersistentModelIndex(index);
    view()->setRootIndex(index);
    update();
}

/*!
    \property QComboBox::currentIndex
    \brief the index of the current item in the combobox.

    The current index can change when inserting or removing items.

    By default, for an empty combo box or a combo box in which no current
    item is set, this property has a value of -1.
*/
int QComboBox::currentIndex() const
{
    Q_D(const QComboBox);
    return d->currentIndex.row();
}

void QComboBox::setCurrentIndex(int index)
{
    Q_D(QComboBox);
    QModelIndex mi = d->model->index(index, d->modelColumn, d->root);
    d->setCurrentIndex(mi);
}

void QComboBoxPrivate::setCurrentIndex(const QModelIndex &mi)
{
    Q_Q(QComboBox);

    QModelIndex normalized;
    if (mi.column() != modelColumn)
        normalized = model->index(mi.row(), modelColumn, mi.parent());
    if (!normalized.isValid())
        normalized = mi;    // Fallback to passed index.

    bool indexChanged = (normalized != currentIndex);
    if (indexChanged)
        currentIndex = QPersistentModelIndex(normalized);
    if (lineEdit) {
        QString newText = q->itemText(normalized.row());
        if (lineEdit->text() != newText)
            lineEdit->setText(newText);
        updateLineEditGeometry();
    }
    if (indexChanged) {
        q->update();
        _q_emitCurrentIndexChanged(currentIndex);
    }
}

/*!
    \property QComboBox::currentText
    \brief the text of the current item

    By default, for an empty combo box or a combo box in which no current
    item is set, this property contains an empty string.
*/
QString QComboBox::currentText() const
{
    Q_D(const QComboBox);
    if (d->lineEdit)
        return d->lineEdit->text();
    else if (d->currentIndex.isValid())
        return d->itemText(d->currentIndex);
    else
        return QString();
}

/*!
    Returns the text for the given \a index in the combobox.
*/
QString QComboBox::itemText(int index) const
{
    Q_D(const QComboBox);
    QModelIndex mi = d->model->index(index, d->modelColumn, d->root);
    return d->itemText(mi);
}

/*!
    Returns the icon for the given \a index in the combobox.
*/
QIcon QComboBox::itemIcon(int index) const
{
    Q_D(const QComboBox);
    QModelIndex mi = d->model->index(index, d->modelColumn, d->root);
    return d->itemIcon(mi);
}

/*!
   Returns the data for the given \a role in the given \a index in the
   combobox, or QVariant::Invalid if there is no data for this role.
*/
QVariant QComboBox::itemData(int index, int role) const
{
    Q_D(const QComboBox);
    QModelIndex mi = d->model->index(index, d->modelColumn, d->root);
    return d->model->data(mi, role);
}

/*!
  \fn void QComboBox::insertItem(int index, const QString &text, const QVariant &userData)

    Inserts the \a text and \a userData (stored in the Qt::UserRole)
    into the combobox at the given \a index.

    If the index is equal to or higher than the total number of items,
    the new item is appended to the list of existing items. If the
    index is zero or negative, the new item is prepended to the list
    of existing items.

  \sa insertItems()
*/

/*!

    Inserts the \a icon, \a text and \a userData (stored in the
    Qt::UserRole) into the combobox at the given \a index.

    If the index is equal to or higher than the total number of items,
    the new item is appended to the list of existing items. If the
    index is zero or negative, the new item is prepended to the list
    of existing items.

    \sa insertItems()
*/
void QComboBox::insertItem(int index, const QIcon &icon, const QString &text, const QVariant &userData)
{
    Q_D(QComboBox);
    int itemCount = count();
    index = qBound(0, index, itemCount);
    if (index >= d->maxCount)
        return;

    // For the common case where we are using the built in QStandardItemModel
    // construct a QStandardItem, reducing the number of expensive signals from the model
    if (QStandardItemModel *m = qobject_cast<QStandardItemModel*>(d->model)) {
        QStandardItem *item = new QStandardItem(text);
        if (!icon.isNull()) item->setData(icon, Qt::DecorationRole);
        if (userData.isValid()) item->setData(userData, Qt::UserRole);
        m->insertRow(index, item);
        ++itemCount;
    } else {
        d->inserting = true;
        if (d->model->insertRows(index, 1, d->root)) {
            QModelIndex item = d->model->index(index, d->modelColumn, d->root);
            if (icon.isNull() && !userData.isValid()) {
                d->model->setData(item, text, Qt::EditRole);
            } else {
                QMap<int, QVariant> values;
                if (!text.isNull()) values.insert(Qt::EditRole, text);
                if (!icon.isNull()) values.insert(Qt::DecorationRole, icon);
                if (userData.isValid()) values.insert(Qt::UserRole, userData);
                if (!values.isEmpty()) d->model->setItemData(item, values);
            }
            d->inserting = false;
            d->_q_rowsInserted(d->root, index, index);
            ++itemCount;
        } else {
            d->inserting = false;
        }
    }

    if (itemCount > d->maxCount)
        d->model->removeRows(itemCount - 1, itemCount - d->maxCount, d->root);
}

/*!
    Inserts the strings from the \a list into the combobox as separate items,
    starting at the \a index specified.

    If the index is equal to or higher than the total number of items, the new items
    are appended to the list of existing items. If the index is zero or negative, the
    new items are prepended to the list of existing items.

    \sa insertItem()
    */
void QComboBox::insertItems(int index, const QStringList &list)
{
    Q_D(QComboBox);
    if (list.isEmpty())
        return;
    index = qBound(0, index, count());
    int insertCount = qMin(d->maxCount - index, list.count());
    if (insertCount <= 0)
        return;
    // For the common case where we are using the built in QStandardItemModel
    // construct a QStandardItem, reducing the number of expensive signals from the model
    if (QStandardItemModel *m = qobject_cast<QStandardItemModel*>(d->model)) {
        QList<QStandardItem *> items;
        QStandardItem *hiddenRoot = m->invisibleRootItem();
        for (int i = 0; i < insertCount; ++i)
            items.append(new QStandardItem(list.at(i)));
        hiddenRoot->insertRows(index, items);
    } else {
        d->inserting = true;
        if (d->model->insertRows(index, insertCount, d->root)) {
            QModelIndex item;
            for (int i = 0; i < insertCount; ++i) {
                item = d->model->index(i+index, d->modelColumn, d->root);
                d->model->setData(item, list.at(i), Qt::EditRole);
            }
            d->inserting = false;
            d->_q_rowsInserted(d->root, index, index + insertCount - 1);
        } else {
            d->inserting = false;
        }
    }

    int mc = count();
    if (mc > d->maxCount)
        d->model->removeRows(d->maxCount, mc - d->maxCount, d->root);
}

/*!
    \since 4.4

    Inserts a separator item into the combobox at the given \a index.

    If the index is equal to or higher than the total number of items, the new item
    is appended to the list of existing items. If the index is zero or negative, the
    new item is prepended to the list of existing items.

    \sa insertItem()
*/
void QComboBox::insertSeparator(int index)
{
    Q_D(QComboBox);
    int itemCount = count();
    index = qBound(0, index, itemCount);
    if (index >= d->maxCount)
        return;
    insertItem(index, QIcon(), QString());
    QComboBoxDelegate::setSeparator(d->model, d->model->index(index, 0, d->root));
}

/*!
    Removes the item at the given \a index from the combobox.
    This will update the current index if the index is removed.

    This function does nothing if \a index is out of range.
*/
void QComboBox::removeItem(int index)
{
    Q_D(QComboBox);
    if (index < 0 || index >= count())
        return;
    d->model->removeRows(index, 1, d->root);
}

/*!
    Sets the \a text for the item on the given \a index in the combobox.
*/
void QComboBox::setItemText(int index, const QString &text)
{
    Q_D(const QComboBox);
    QModelIndex item = d->model->index(index, d->modelColumn, d->root);
    if (item.isValid()) {
        d->model->setData(item, text, Qt::EditRole);
    }
}

/*!
    Sets the \a icon for the item on the given \a index in the combobox.
*/
void QComboBox::setItemIcon(int index, const QIcon &icon)
{
    Q_D(const QComboBox);
    QModelIndex item = d->model->index(index, d->modelColumn, d->root);
    if (item.isValid()) {
        d->model->setData(item, icon, Qt::DecorationRole);
    }
}

/*!
    Sets the data \a role for the item on the given \a index in the combobox
    to the specified \a value.
*/
void QComboBox::setItemData(int index, const QVariant &value, int role)
{
    Q_D(const QComboBox);
    QModelIndex item = d->model->index(index, d->modelColumn, d->root);
    if (item.isValid()) {
        d->model->setData(item, value, role);
    }
}

/*!
    Returns the list view used for the combobox popup.
*/
QAbstractItemView *QComboBox::view() const
{
    Q_D(const QComboBox);
    return const_cast<QComboBoxPrivate*>(d)->viewContainer()->itemView();
}

/*!
  Sets the view to be used in the combobox popup to the given \a
  itemView. The combobox takes ownership of the view.

  Note: If you want to use the convenience views (like QListWidget,
  QTableWidget or QTreeWidget), make sure to call setModel() on the
  combobox with the convenience widgets model before calling this
  function.
*/
void QComboBox::setView(QAbstractItemView *itemView)
{
    Q_D(QComboBox);
    if (!itemView) {
        qWarning("QComboBox::setView: cannot set a 0 view");
        return;
    }

    if (itemView->model() != d->model)
        itemView->setModel(d->model);
    d->viewContainer()->setItemView(itemView);
}

/*!
    \reimp
*/
QSize QComboBox::minimumSizeHint() const
{
    Q_D(const QComboBox);
    return d->recomputeSizeHint(d->minimumSizeHint);
}

/*!
    \reimp

    This implementation caches the size hint to avoid resizing when
    the contents change dynamically. To invalidate the cached value
    change the \l sizeAdjustPolicy.
*/
QSize QComboBox::sizeHint() const
{
    Q_D(const QComboBox);
    return d->recomputeSizeHint(d->sizeHint);
}

/*!
    Displays the list of items in the combobox. If the list is empty
    then the no items will be shown.

    If you reimplement this function to show a custom pop-up, make
    sure you call hidePopup() to reset the internal state.

    \sa hidePopup()
*/
void QComboBox::showPopup()
{
    Q_D(QComboBox);
    if (count() <= 0)
        return;

#ifdef QT_KEYPAD_NAVIGATION
#ifndef QT_NO_COMPLETER
    if (QApplication::keypadNavigationEnabled() && d->completer) {
        // editable combo box is line edit plus completer
        setEditFocus(true);
        d->completer->complete(); // show popup
        return;
    }
#endif
#endif

    QStyle * const style = this->style();

    // set current item and select it
    view()->selectionModel()->setCurrentIndex(d->currentIndex,
                                              QItemSelectionModel::ClearAndSelect);
    QComboBoxPrivateContainer* container = d->viewContainer();
    QStyleOptionComboBox opt;
    initStyleOption(&opt);
    QRect listRect(style->subControlRect(QStyle::CC_ComboBox, &opt,
                                         QStyle::SC_ComboBoxListBoxPopup, this));
    QRect screen = d->popupGeometry(QApplication::desktop()->screenNumber(this));
    QPoint below = mapToGlobal(listRect.bottomLeft());
    int belowHeight = screen.bottom() - below.y();
    QPoint above = mapToGlobal(listRect.topLeft());
    int aboveHeight = above.y() - screen.y();
    bool boundToScreen = !window()->testAttribute(Qt::WA_DontShowOnScreen);

    const bool usePopup = style->styleHint(QStyle::SH_ComboBox_Popup, &opt, this);
    {
        int listHeight = 0;
        int count = 0;
        QStack<QModelIndex> toCheck;
        toCheck.push(view()->rootIndex());
#ifndef QT_NO_TREEVIEW
        QTreeView *treeView = qobject_cast<QTreeView*>(view());
        if (treeView && treeView->header() && !treeView->header()->isHidden())
            listHeight += treeView->header()->height();
#endif
        while (!toCheck.isEmpty()) {
            QModelIndex parent = toCheck.pop();
            for (int i = 0; i < d->model->rowCount(parent); ++i) {
                QModelIndex idx = d->model->index(i, d->modelColumn, parent);
                if (!idx.isValid())
                    continue;
                listHeight += view()->visualRect(idx).height() + container->spacing();
#ifndef QT_NO_TREEVIEW
                if (d->model->hasChildren(idx) && treeView && treeView->isExpanded(idx))
                    toCheck.push(idx);
#endif
                ++count;
                if (!usePopup && count >= d->maxVisibleItems) {
                    toCheck.clear();
                    break;
                }
            }
        }
        listRect.setHeight(listHeight);
    }

    {
        // add the spacing for the grid on the top and the bottom;
        int heightMargin = 2*container->spacing();

        // add the frame of the container
        int marginTop, marginBottom;
        container->getContentsMargins(0, &marginTop, 0, &marginBottom);
        heightMargin += marginTop + marginBottom;

        //add the frame of the view
        view()->getContentsMargins(0, &marginTop, 0, &marginBottom);
        marginTop += static_cast<QAbstractScrollAreaPrivate *>(QObjectPrivate::get(view()))->top;
        marginBottom += static_cast<QAbstractScrollAreaPrivate *>(QObjectPrivate::get(view()))->bottom;
        heightMargin += marginTop + marginBottom;

        listRect.setHeight(listRect.height() + heightMargin);
    }

    // Add space for margin at top and bottom if the style wants it.
    if (usePopup)
        listRect.setHeight(listRect.height() + style->pixelMetric(QStyle::PM_MenuVMargin, &opt, this) * 2);

    // Make sure the popup is wide enough to display its contents.
    if (usePopup) {
        const int diff = d->computeWidthHint() - width();
        if (diff > 0)
            listRect.setWidth(listRect.width() + diff);
    }

    //we need to activate the layout to make sure the min/maximum size are set when the widget was not yet show
    container->layout()->activate();
    //takes account of the minimum/maximum size of the container
    listRect.setSize( listRect.size().expandedTo(container->minimumSize())
                      .boundedTo(container->maximumSize()));

    // make sure the widget fits on screen
    if (boundToScreen) {
        if (listRect.width() > screen.width() )
            listRect.setWidth(screen.width());
        if (mapToGlobal(listRect.bottomRight()).x() > screen.right()) {
            below.setX(screen.x() + screen.width() - listRect.width());
            above.setX(screen.x() + screen.width() - listRect.width());
        }
        if (mapToGlobal(listRect.topLeft()).x() < screen.x() ) {
            below.setX(screen.x());
            above.setX(screen.x());
        }
    }

    if (usePopup) {
        // Position horizontally.
        listRect.moveLeft(above.x());

#ifndef Q_WS_S60
        // Position vertically so the curently selected item lines up
        // with the combo box.
        const QRect currentItemRect = view()->visualRect(view()->currentIndex());
        const int offset = listRect.top() - currentItemRect.top();
        listRect.moveTop(above.y() + offset - listRect.top());
#endif


        // Clamp the listRect height and vertical position so we don't expand outside the
        // available screen geometry.This may override the vertical position, but it is more
        // important to show as much as possible of the popup.
        const int height = !boundToScreen ? listRect.height() : qMin(listRect.height(), screen.height());
#ifdef Q_WS_S60
        //popup needs to be stretched with screen minimum dimension
        listRect.setHeight(qMin(screen.height(), screen.width()));
#else
        listRect.setHeight(height);
#endif

        if (boundToScreen) {
            if (listRect.top() < screen.top())
                listRect.moveTop(screen.top());
            if (listRect.bottom() > screen.bottom())
                listRect.moveBottom(screen.bottom());
        }
#ifdef Q_WS_S60
        if (screen.width() < screen.height()) {
            // in portait, menu should be positioned above softkeys
            listRect.moveBottom(screen.bottom());
        } else {
            TRect staConTopRect = TRect();
            AknLayoutUtils::LayoutMetricsRect(AknLayoutUtils::EStaconTop, staConTopRect);
            listRect.setWidth(listRect.height());
            //by default popup is centered on screen in landscape
            listRect.moveCenter(screen.center());
            if (staConTopRect.IsEmpty() && AknLayoutUtils::CbaLocation() != AknLayoutUtils::EAknCbaLocationBottom) {
                // landscape without stacon, menu should be at the right
                (opt.direction == Qt::LeftToRight) ? listRect.setRight(screen.right()) :
                                                     listRect.setLeft(screen.left());
            }
        }
#endif
    } else if (!boundToScreen || listRect.height() <= belowHeight) {
        listRect.moveTopLeft(below);
    } else if (listRect.height() <= aboveHeight) {
        listRect.moveBottomLeft(above);
    } else if (belowHeight >= aboveHeight) {
        listRect.setHeight(belowHeight);
        listRect.moveTopLeft(below);
    } else {
        listRect.setHeight(aboveHeight);
        listRect.moveBottomLeft(above);
    }

#ifndef QT_NO_IM
    if (QInputContext *qic = inputContext())
        qic->reset();
#endif
    QScrollBar *sb = view()->horizontalScrollBar();
    Qt::ScrollBarPolicy policy = view()->horizontalScrollBarPolicy();
    bool needHorizontalScrollBar = (policy == Qt::ScrollBarAsNeeded || policy == Qt::ScrollBarAlwaysOn)
                                   && sb->minimum() < sb->maximum();
    if (needHorizontalScrollBar) {
        listRect.adjust(0, 0, 0, sb->height());
    }
    container->setGeometry(listRect);

#ifndef Q_WS_MAC
    const bool updatesEnabled = container->updatesEnabled();
#endif

#if defined(Q_WS_WIN) && !defined(QT_NO_EFFECTS)
    bool scrollDown = (listRect.topLeft() == below);
    if (QApplication::isEffectEnabled(Qt::UI_AnimateCombo)
        && !style->styleHint(QStyle::SH_ComboBox_Popup, &opt, this) && !window()->testAttribute(Qt::WA_DontShowOnScreen))
        qScrollEffect(container, scrollDown ? QEffects::DownScroll : QEffects::UpScroll, 150);
#endif

// Don't disable updates on Mac OS X. Windows are displayed immediately on this platform,
// which means that the window will be visible before the call to container->show() returns.
// If updates are disabled at this point we'll miss our chance at painting the popup
// menu before it's shown, causing flicker since the window then displays the standard gray
// background.
#ifndef Q_WS_MAC
    container->setUpdatesEnabled(false);
#endif

    container->raise();
    container->show();
    container->updateScrollers();
    view()->setFocus();

    view()->scrollTo(view()->currentIndex(),
                     style->styleHint(QStyle::SH_ComboBox_Popup, &opt, this)
                             ? QAbstractItemView::PositionAtCenter
                             : QAbstractItemView::EnsureVisible);

#ifndef Q_WS_MAC
    container->setUpdatesEnabled(updatesEnabled);
#endif

    container->update();
#ifdef QT_KEYPAD_NAVIGATION
    if (QApplication::keypadNavigationEnabled())
        view()->setEditFocus(true);
#endif
}

/*!
    Hides the list of items in the combobox if it is currently visible
    and resets the internal state, so that if the custom pop-up was
    shown inside the reimplemented showPopup(), then you also need to
    reimplement the hidePopup() function to hide your custom pop-up
    and call the base class implementation to reset the internal state
    whenever your custom pop-up widget is hidden.

    \sa showPopup()
*/
void QComboBox::hidePopup()
{
    Q_D(QComboBox);
    if (d->container && d->container->isVisible()) {
#if !defined(QT_NO_EFFECTS)
        d->model->blockSignals(true);
        d->container->itemView()->blockSignals(true);
        d->container->blockSignals(true);
        // Flash selected/triggered item (if any).
        if (style()->styleHint(QStyle::SH_Menu_FlashTriggeredItem)) {
            QItemSelectionModel *selectionModel = view() ? view()->selectionModel() : 0;
            if (selectionModel && selectionModel->hasSelection()) {
                QEventLoop eventLoop;
                const QItemSelection selection = selectionModel->selection();

                // Deselect item and wait 60 ms.
                selectionModel->select(selection, QItemSelectionModel::Toggle);
                QTimer::singleShot(60, &eventLoop, SLOT(quit()));
                eventLoop.exec();

                // Select item and wait 20 ms.
                selectionModel->select(selection, QItemSelectionModel::Toggle);
                QTimer::singleShot(20, &eventLoop, SLOT(quit()));
                eventLoop.exec();
            }
        }

        // Fade out.
        bool needFade = style()->styleHint(QStyle::SH_Menu_FadeOutOnHide);
        if (needFade) {
#if defined(Q_WS_MAC)
            macWindowFade(qt_mac_window_for(d->container));
#endif // Q_WS_MAC
            // Other platform implementations welcome :-)
        }
        d->model->blockSignals(false);
        d->container->itemView()->blockSignals(false);
        d->container->blockSignals(false);

        if (!needFade)
#endif // QT_NO_EFFECTS
            // Fade should implicitly hide as well ;-)
            d->container->hide();
    }
#ifdef QT_KEYPAD_NAVIGATION
    if (QApplication::keypadNavigationEnabled() && isEditable() && hasFocus())
        setEditFocus(true);
#endif
    d->_q_resetButton();
}

/*!
    Clears the combobox, removing all items.

    Note: If you have set an external model on the combobox this model
    will still be cleared when calling this function.
*/
void QComboBox::clear()
{
    Q_D(QComboBox);
    d->model->removeRows(0, d->model->rowCount(d->root), d->root);
}

/*!
    \fn void QComboBox::clearValidator()

    Use setValidator(0) instead.
*/

/*!
    Clears the contents of the line edit used for editing in the combobox.
*/
void QComboBox::clearEditText()
{
    Q_D(QComboBox);
    if (d->lineEdit)
        d->lineEdit->clear();
}

/*!
    Sets the \a text in the combobox's text edit.
*/
void QComboBox::setEditText(const QString &text)
{
    Q_D(QComboBox);
    if (d->lineEdit)
        d->lineEdit->setText(text);
}

/*!
    \reimp
*/
void QComboBox::focusInEvent(QFocusEvent *e)
{
    Q_D(QComboBox);
    update();
    if (d->lineEdit) {
        d->lineEdit->event(e);
#ifndef QT_NO_COMPLETER
        if (d->lineEdit->completer())
            d->lineEdit->completer()->setWidget(this);
#endif
    }
}

/*!
    \reimp
*/
void QComboBox::focusOutEvent(QFocusEvent *e)
{
    Q_D(QComboBox);
    update();
    if (d->lineEdit)
        d->lineEdit->event(e);
}

/*! \reimp */
void QComboBox::changeEvent(QEvent *e)
{
    Q_D(QComboBox);
    switch (e->type()) {
    case QEvent::StyleChange:
        d->updateDelegate();
#ifdef Q_WS_MAC
    case QEvent::MacSizeChange:
#endif
        d->sizeHint = QSize(); // invalidate size hint
        d->minimumSizeHint = QSize();
        d->updateLayoutDirection();
        if (d->lineEdit)
            d->updateLineEditGeometry();
        d->setLayoutItemMargins(QStyle::SE_ComboBoxLayoutItem);

#ifdef Q_WS_S60
        if (d->container) {
            QStyleOptionComboBox opt;
            initStyleOption(&opt);

            if (style()->styleHint(QStyle::SH_ComboBox_Popup, &opt, this)) {
                const QRect screen = d->popupGeometry(QApplication::desktop()->screenNumber(this));

                QRect listRect(style()->subControlRect(QStyle::CC_ComboBox, &opt,
                    QStyle::SC_ComboBoxListBoxPopup, this));
                listRect.setHeight(qMin(screen.height(), screen.width()));

                if (screen.width() < screen.height()) {
                    // in portait, menu should be positioned above softkeys
                    listRect.moveBottom(screen.bottom());
                } else {
                    TRect staConTopRect = TRect();
                    AknLayoutUtils::LayoutMetricsRect(AknLayoutUtils::EStaconTop, staConTopRect);
                    listRect.setWidth(listRect.height());
                    //by default popup is centered on screen in landscape
                    listRect.moveCenter(screen.center());
                    if (staConTopRect.IsEmpty()) {
                        // landscape without stacon, menu should be at the right
                        (opt.direction == Qt::LeftToRight) ? listRect.setRight(screen.right()) :
                                                             listRect.setLeft(screen.left());
                    }
                    d->container->setGeometry(listRect);
                }
            }
        }
#endif

        // ### need to update scrollers etc. as well here
        break;
    case QEvent::EnabledChange:
        if (!isEnabled())
            hidePopup();
        break;
    case QEvent::PaletteChange: {
        d->updateViewContainerPaletteAndOpacity();
        break;
    }
    case QEvent::FontChange:
        d->sizeHint = QSize(); // invalidate size hint
        d->viewContainer()->setFont(font());
        if (d->lineEdit)
            d->updateLineEditGeometry();
        break;
    default:
        break;
    }
    QWidget::changeEvent(e);
}

/*!
    \reimp
*/
void QComboBox::resizeEvent(QResizeEvent *)
{
    Q_D(QComboBox);
    d->updateLineEditGeometry();
}

/*!
    \reimp
*/
void QComboBox::paintEvent(QPaintEvent *)
{
    QStylePainter painter(this);
    painter.setPen(palette().color(QPalette::Text));

    // draw the combobox frame, focusrect and selected etc.
    QStyleOptionComboBox opt;
    initStyleOption(&opt);
    painter.drawComplexControl(QStyle::CC_ComboBox, opt);

    // draw the icon and text
    painter.drawControl(QStyle::CE_ComboBoxLabel, opt);
}

/*!
    \reimp
*/
void QComboBox::showEvent(QShowEvent *e)
{
    Q_D(QComboBox);
    if (!d->shownOnce && d->sizeAdjustPolicy == QComboBox::AdjustToContentsOnFirstShow) {
        d->sizeHint = QSize();
        updateGeometry();
    }
    d->shownOnce = true;
    QWidget::showEvent(e);
}

/*!
    \reimp
*/
void QComboBox::hideEvent(QHideEvent *)
{
    hidePopup();
}

/*!
    \reimp
*/
bool QComboBox::event(QEvent *event)
{
    Q_D(QComboBox);
    switch(event->type()) {
    case QEvent::LayoutDirectionChange:
    case QEvent::ApplicationLayoutDirectionChange:
        d->updateLayoutDirection();
        d->updateLineEditGeometry();
        break;
    case QEvent::HoverEnter:
    case QEvent::HoverLeave:
    case QEvent::HoverMove:
    if (const QHoverEvent *he = static_cast<const QHoverEvent *>(event))
        d->updateHoverControl(he->pos());
        break;
    case QEvent::ShortcutOverride:
        if (d->lineEdit)
            return d->lineEdit->event(event);
        break;
#ifdef QT_KEYPAD_NAVIGATION
    case QEvent::EnterEditFocus:
        if (!d->lineEdit)
            setEditFocus(false); // We never want edit focus if we are not editable
        else
            d->lineEdit->event(event);  //so cursor starts
        break;
    case QEvent::LeaveEditFocus:
        if (d->lineEdit)
            d->lineEdit->event(event);  //so cursor stops
        break;
#endif
    default:
        break;
    }
    return QWidget::event(event);
}

/*!
    \reimp
*/
void QComboBox::mousePressEvent(QMouseEvent *e)
{
    Q_D(QComboBox);
    QStyleOptionComboBox opt;
    initStyleOption(&opt);
    QStyle::SubControl sc = style()->hitTestComplexControl(QStyle::CC_ComboBox, &opt, e->pos(),
                                                           this);
    if (e->button() == Qt::LeftButton && (sc == QStyle::SC_ComboBoxArrow || !isEditable())
        && !d->viewContainer()->isVisible()) {
        if (sc == QStyle::SC_ComboBoxArrow)
            d->updateArrow(QStyle::State_Sunken);
#ifdef QT_KEYPAD_NAVIGATION
        //if the container already exists, then d->viewContainer() is safe to call
        if (d->container) {
#endif
            // We've restricted the next couple of lines, because by not calling
            // viewContainer(), we avoid creating the QComboBoxPrivateContainer.
            d->viewContainer()->blockMouseReleaseTimer.start(QApplication::doubleClickInterval());
            d->viewContainer()->initialClickPosition = mapToGlobal(e->pos());
#ifdef QT_KEYPAD_NAVIGATION
        }
#endif
        showPopup();
    } else {
#ifdef QT_KEYPAD_NAVIGATION
        if (QApplication::keypadNavigationEnabled() && sc == QStyle::SC_ComboBoxEditField && d->lineEdit) {
            d->lineEdit->event(e);  //so lineedit can move cursor, etc
            return;
        }
#endif
        QWidget::mousePressEvent(e);
    }
}

/*!
    \reimp
*/
void QComboBox::mouseReleaseEvent(QMouseEvent *e)
{
    Q_D(QComboBox);
    Q_UNUSED(e);
    d->updateArrow(QStyle::State_None);
}

/*!
    \reimp
*/
void QComboBox::keyPressEvent(QKeyEvent *e)
{
    Q_D(QComboBox);

#ifndef QT_NO_COMPLETER
    if (d->lineEdit
        && d->lineEdit->completer()
        && d->lineEdit->completer()->popup()
        && d->lineEdit->completer()->popup()->isVisible()) {
        // provide same autocompletion support as line edit
        d->lineEdit->event(e);
        return;
    }
#endif

    enum Move { NoMove=0 , MoveUp , MoveDown , MoveFirst , MoveLast};

    Move move = NoMove;
    int newIndex = currentIndex();
    switch (e->key()) {
    case Qt::Key_Up:
        if (e->modifiers() & Qt::ControlModifier)
            break; // pass to line edit for auto completion
    case Qt::Key_PageUp:
#ifdef QT_KEYPAD_NAVIGATION
        if (QApplication::keypadNavigationEnabled())
            e->ignore();
        else
#endif
        move = MoveUp;
        break;
    case Qt::Key_Down:
        if (e->modifiers() & Qt::AltModifier) {
            showPopup();
            return;
        } else if (e->modifiers() & Qt::ControlModifier)
            break; // pass to line edit for auto completion
        // fall through
    case Qt::Key_PageDown:
#ifdef QT_KEYPAD_NAVIGATION
        if (QApplication::keypadNavigationEnabled())
            e->ignore();
        else
#endif
        move = MoveDown;
        break;
    case Qt::Key_Home:
        if (!d->lineEdit)
            move = MoveFirst;
        break;
    case Qt::Key_End:
        if (!d->lineEdit)
            move = MoveLast;
        break;
    case Qt::Key_F4:
        if (!e->modifiers()) {
            showPopup();
            return;
        }
        break;
    case Qt::Key_Space:
        if (!d->lineEdit) {
            showPopup();
            return;
        }
    case Qt::Key_Enter:
    case Qt::Key_Return:
    case Qt::Key_Escape:
        if (!d->lineEdit)
            e->ignore();
        break;
#ifdef QT_KEYPAD_NAVIGATION
    case Qt::Key_Select:
        if (QApplication::keypadNavigationEnabled()
                && (!hasEditFocus() || !d->lineEdit)) {
            showPopup();
            return;
        }
        break;
    case Qt::Key_Left:
    case Qt::Key_Right:
        if (QApplication::keypadNavigationEnabled() && !hasEditFocus())
            e->ignore();
        break;
    case Qt::Key_Back:
        if (QApplication::keypadNavigationEnabled()) {
            if (!hasEditFocus() || !d->lineEdit)
                e->ignore();
        } else {
            e->ignore(); // let the surounding dialog have it
        }
        break;
#endif
    default:
        if (!d->lineEdit) {
            if (!e->text().isEmpty())
                d->keyboardSearchString(e->text());
            else
                e->ignore();
        }
    }

    if (move != NoMove) {
        e->accept();
        switch (move) {
        case MoveFirst:
            newIndex = -1;
        case MoveDown:
            newIndex++;
            while ((newIndex < count()) && !(d->model->flags(d->model->index(newIndex,d->modelColumn,d->root)) & Qt::ItemIsEnabled))
                newIndex++;
            break;
        case MoveLast:
            newIndex = count();
        case MoveUp:
            newIndex--;
            while ((newIndex >= 0) && !(d->model->flags(d->model->index(newIndex,d->modelColumn,d->root)) & Qt::ItemIsEnabled))
                newIndex--;
            break;
        default:
            e->ignore();
            break;
        }

        if (newIndex >= 0 && newIndex < count() && newIndex != currentIndex()) {
            setCurrentIndex(newIndex);
            d->emitActivated(d->currentIndex);
        }
    } else if (d->lineEdit) {
        d->lineEdit->event(e);
    }
}


/*!
    \reimp
*/
void QComboBox::keyReleaseEvent(QKeyEvent *e)
{
    Q_D(QComboBox);
    if (d->lineEdit)
        d->lineEdit->event(e);
}

/*!
    \reimp
*/
#ifndef QT_NO_WHEELEVENT
void QComboBox::wheelEvent(QWheelEvent *e)
{
    Q_D(QComboBox);
    if (!d->viewContainer()->isVisible()) {
        int newIndex = currentIndex();

        if (e->delta() > 0) {
            newIndex--;
            while ((newIndex >= 0) && !(d->model->flags(d->model->index(newIndex,d->modelColumn,d->root)) & Qt::ItemIsEnabled))
                newIndex--;
        } else {
            newIndex++;
            while ((newIndex < count()) && !(d->model->flags(d->model->index(newIndex,d->modelColumn,d->root)) & Qt::ItemIsEnabled))
                newIndex++;
        }

        if (newIndex >= 0 && newIndex < count() && newIndex != currentIndex()) {
            setCurrentIndex(newIndex);
            d->emitActivated(d->currentIndex);
        }
        e->accept();
    }
}
#endif

#ifndef QT_NO_CONTEXTMENU
/*!
    \reimp
*/
void QComboBox::contextMenuEvent(QContextMenuEvent *e)
{
    Q_D(QComboBox);
    if (d->lineEdit) {
        Qt::ContextMenuPolicy p = d->lineEdit->contextMenuPolicy();
        d->lineEdit->setContextMenuPolicy(Qt::DefaultContextMenu);
        d->lineEdit->event(e);
        d->lineEdit->setContextMenuPolicy(p);
    }
}
#endif // QT_NO_CONTEXTMENU

void QComboBoxPrivate::keyboardSearchString(const QString &text)
{
    // use keyboardSearch from the listView so we do not duplicate code
    QAbstractItemView *view = viewContainer()->itemView();
    view->setCurrentIndex(currentIndex);
    int currentRow = view->currentIndex().row();
    view->keyboardSearch(text);
    if (currentRow != view->currentIndex().row()) {
        setCurrentIndex(view->currentIndex());
        emitActivated(currentIndex);
    }
}

void QComboBoxPrivate::modelChanged()
{
    Q_Q(QComboBox);

    if (sizeAdjustPolicy == QComboBox::AdjustToContents) {
        sizeHint = QSize();
        adjustComboBoxSize();
        q->updateGeometry();
    }
}

/*!
    \reimp
*/
void QComboBox::inputMethodEvent(QInputMethodEvent *e)
{
    Q_D(QComboBox);
    if (d->lineEdit) {
        d->lineEdit->event(e);
    } else {
        if (!e->commitString().isEmpty())
            d->keyboardSearchString(e->commitString());
        else
            e->ignore();
    }
}

/*!
    \reimp
*/
QVariant QComboBox::inputMethodQuery(Qt::InputMethodQuery query) const
{
    Q_D(const QComboBox);
    if (d->lineEdit)
        return d->lineEdit->inputMethodQuery(query);
    return QWidget::inputMethodQuery(query);
}

/*!
    \fn bool QComboBox::editable() const

    Use isEditable() instead.
*/

/*!
    \fn void QComboBox::insertItem(const QPixmap &pixmap, int index)

    Use an insertItem() function that takes a QIcon instead, for
    example, insertItem(index, QIcon(pixmap)).
*/

/*!
    \fn void QComboBox::insertItem(const QPixmap &pixmap, const QString &text, int index)

    Use an insertItem() function that takes a QIcon instead, for
    example, insertItem(index, QIcon(pixmap), text).

    \sa insertItems()
*/

/*!
    \fn void QComboBox::changeItem(const QString &text, int index)

    Use setItemText() instead.
*/

/*!
    \fn void QComboBox::changeItem(const QPixmap &pixmap, int index)

    Use setItemIcon() instead, for example,
    setItemIcon(index, QIcon(pixmap)).
*/

/*!
    \fn void QComboBox::changeItem(const QPixmap &pixmap, const QString &text, int index)

    Use setItem() instead, for example, setItem(index, QIcon(pixmap),text).
*/

/*!
    \fn void QComboBox::addItem(const QString &text, const QVariant &userData)

    Adds an item to the combobox with the given \a text, and
    containing the specified \a userData (stored in the Qt::UserRole).
    The item is appended to the list of existing items.
*/

/*!
    \fn void QComboBox::addItem(const QIcon &icon, const QString &text,
                                const QVariant &userData)

    Adds an item to the combobox with the given \a icon and \a text,
    and containing the specified \a userData (stored in the
    Qt::UserRole). The item is appended to the list of existing items.
*/

/*!
    \fn void QComboBox::addItems(const QStringList &texts)

    Adds each of the strings in the given \a texts to the combobox. Each item
    is appended to the list of existing items in turn.
*/

/*!
    \fn void QComboBox::editTextChanged(const QString &text)

    This signal is emitted when the text in the combobox's line edit
    widget is changed. The new text is specified by \a text.
*/

/*!
    \fn QComboBox::InsertPolicy QComboBox::insertionPolicy() const
    \compat

    Use QComboBox::insertPolicy instead.
*/

/*!
    \fn void QComboBox::setInsertionPolicy(InsertPolicy policy)
    \compat

    Use QComboBox::insertPolicy instead.
*/

/*!
    \fn void QComboBox::setCurrentText(const QString &text)
    \compat

    Use setItemText() instead.

    \sa currentIndex()
*/

/*!
    \fn QString QComboBox::text(int index) const
    \compat

    Use itemText() instead.
*/

/*!
    \fn QPixmap QComboBox::pixmap(int index) const
    \compat

    Use itemIcon() instead.
*/

/*!
    \fn void QComboBox::insertStringList(const QStringList &list, int index)
    \compat

    Use insertItems() instead.
*/

/*!
    \fn void QComboBox::insertItem(const QString &text, int index)
    \compat
*/

/*!
    \fn void QComboBox::clearEdit()
    \compat

    Use clearEditText() instead.
*/


/*!
    \property QComboBox::frame
    \brief whether the combo box draws itself with a frame


    If enabled (the default) the combo box draws itself inside a
    frame, otherwise the combo box draws itself without any frame.
*/
bool QComboBox::hasFrame() const
{
    Q_D(const QComboBox);
    return d->frame;
}


void QComboBox::setFrame(bool enable)
{
    Q_D(QComboBox);
    d->frame = enable;
    update();
    updateGeometry();
}

/*!
    \property QComboBox::modelColumn
    \brief the column in the model that is visible.

    If set prior to populating the combo box, the pop-up view will
    not be affected and will show the first column (using this property's
    default value).

    By default, this property has a value of 0.
*/
int QComboBox::modelColumn() const
{
    Q_D(const QComboBox);
    return d->modelColumn;
}

void QComboBox::setModelColumn(int visibleColumn)
{
    Q_D(QComboBox);
    d->modelColumn = visibleColumn;
    QListView *lv = qobject_cast<QListView *>(d->viewContainer()->itemView());
    if (lv)
        lv->setModelColumn(visibleColumn);
#ifndef QT_NO_COMPLETER
    if (d->lineEdit && d->lineEdit->completer()
        && d->lineEdit->completer() == d->completer)
        d->lineEdit->completer()->setCompletionColumn(visibleColumn);
#endif
    setCurrentIndex(currentIndex()); //update the text to the text of the new column;
}

/*!
    \fn int QComboBox::currentItem() const

    Use currentIndex() instead.
*/

/*!
    \fn void QComboBox::setCurrentItem(int)

    Use setCurrentIndex(int) instead.
*/

/*!
    \fn void QComboBox::popup()

    Use showPopup() instead.
*/

/*!
    \fn void QComboBox::textChanged(const QString &text)

    Use the editTextChanged(const QString &text) signal instead.
*/

/*!
    \typedef QComboBox::Policy
    \compat

    Use QComboBox::InsertPolicy instead.
*/

QT_END_NAMESPACE

#include "moc_qcombobox.cpp"

#endif // QT_NO_COMBOBOX