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
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
|
// Knockout JavaScript library v2.3.0
// (c) Steven Sanderson - http://knockoutjs.com/
// License: MIT (http://www.opensource.org/licenses/mit-license.php)
(function(){
var DEBUG=true;
(function(undefined){
// (0, eval)('this') is a robust way of getting a reference to the global object
// For details, see http://stackoverflow.com/questions/14119988/return-this-0-evalthis/14120023#14120023
var window = this || (0, eval)('this'),
document = window['document'],
navigator = window['navigator'],
jQuery = window["jQuery"],
JSON = window["JSON"];
(function(factory) {
// Support three module loading scenarios
if (typeof require === 'function' && typeof exports === 'object' && typeof module === 'object') {
// [1] CommonJS/Node.js
var target = module['exports'] || exports; // module.exports is for Node.js
factory(target);
} else if (typeof define === 'function' && define['amd']) {
// [2] AMD anonymous module
define(['exports'], factory);
} else {
// [3] No module loader (plain <script> tag) - put directly in global namespace
factory(window['ko'] = {});
}
}(function(koExports){
// Internally, all KO objects are attached to koExports (even the non-exported ones whose names will be minified by the closure compiler).
// In the future, the following "ko" variable may be made distinct from "koExports" so that private objects are not externally reachable.
var ko = typeof koExports !== 'undefined' ? koExports : {};
// Google Closure Compiler helpers (used only to make the minified file smaller)
ko.exportSymbol = function(koPath, object) {
var tokens = koPath.split(".");
// In the future, "ko" may become distinct from "koExports" (so that non-exported objects are not reachable)
// At that point, "target" would be set to: (typeof koExports !== "undefined" ? koExports : ko)
var target = ko;
for (var i = 0; i < tokens.length - 1; i++)
target = target[tokens[i]];
target[tokens[tokens.length - 1]] = object;
};
ko.exportProperty = function(owner, publicName, object) {
owner[publicName] = object;
};
ko.version = "2.3.0";
ko.exportSymbol('version', ko.version);
ko.utils = (function () {
var objectForEach = function(obj, action) {
for (var prop in obj) {
if (obj.hasOwnProperty(prop)) {
action(prop, obj[prop]);
}
}
};
// Represent the known event types in a compact way, then at runtime transform it into a hash with event name as key (for fast lookup)
var knownEvents = {}, knownEventTypesByEventName = {};
var keyEventTypeName = (navigator && /Firefox\/2/i.test(navigator.userAgent)) ? 'KeyboardEvent' : 'UIEvents';
knownEvents[keyEventTypeName] = ['keyup', 'keydown', 'keypress'];
knownEvents['MouseEvents'] = ['click', 'dblclick', 'mousedown', 'mouseup', 'mousemove', 'mouseover', 'mouseout', 'mouseenter', 'mouseleave'];
objectForEach(knownEvents, function(eventType, knownEventsForType) {
if (knownEventsForType.length) {
for (var i = 0, j = knownEventsForType.length; i < j; i++)
knownEventTypesByEventName[knownEventsForType[i]] = eventType;
}
});
var eventsThatMustBeRegisteredUsingAttachEvent = { 'propertychange': true }; // Workaround for an IE9 issue - https://github.com/SteveSanderson/knockout/issues/406
// Detect IE versions for bug workarounds (uses IE conditionals, not UA string, for robustness)
// Note that, since IE 10 does not support conditional comments, the following logic only detects IE < 10.
// Currently this is by design, since IE 10+ behaves correctly when treated as a standard browser.
// If there is a future need to detect specific versions of IE10+, we will amend this.
var ieVersion = document && (function() {
var version = 3, div = document.createElement('div'), iElems = div.getElementsByTagName('i');
// Keep constructing conditional HTML blocks until we hit one that resolves to an empty fragment
while (
div.innerHTML = '<!--[if gt IE ' + (++version) + ']><i></i><![endif]-->',
iElems[0]
) {}
return version > 4 ? version : undefined;
}());
var isIe6 = ieVersion === 6,
isIe7 = ieVersion === 7;
function isClickOnCheckableElement(element, eventType) {
if ((ko.utils.tagNameLower(element) !== "input") || !element.type) return false;
if (eventType.toLowerCase() != "click") return false;
var inputType = element.type;
return (inputType == "checkbox") || (inputType == "radio");
}
return {
fieldsIncludedWithJsonPost: ['authenticity_token', /^__RequestVerificationToken(_.*)?$/],
arrayForEach: function (array, action) {
for (var i = 0, j = array.length; i < j; i++)
action(array[i]);
},
arrayIndexOf: function (array, item) {
if (typeof Array.prototype.indexOf == "function")
return Array.prototype.indexOf.call(array, item);
for (var i = 0, j = array.length; i < j; i++)
if (array[i] === item)
return i;
return -1;
},
arrayFirst: function (array, predicate, predicateOwner) {
for (var i = 0, j = array.length; i < j; i++)
if (predicate.call(predicateOwner, array[i]))
return array[i];
return null;
},
arrayRemoveItem: function (array, itemToRemove) {
var index = ko.utils.arrayIndexOf(array, itemToRemove);
if (index >= 0)
array.splice(index, 1);
},
arrayGetDistinctValues: function (array) {
array = array || [];
var result = [];
for (var i = 0, j = array.length; i < j; i++) {
if (ko.utils.arrayIndexOf(result, array[i]) < 0)
result.push(array[i]);
}
return result;
},
arrayMap: function (array, mapping) {
array = array || [];
var result = [];
for (var i = 0, j = array.length; i < j; i++)
result.push(mapping(array[i]));
return result;
},
arrayFilter: function (array, predicate) {
array = array || [];
var result = [];
for (var i = 0, j = array.length; i < j; i++)
if (predicate(array[i]))
result.push(array[i]);
return result;
},
arrayPushAll: function (array, valuesToPush) {
if (valuesToPush instanceof Array)
array.push.apply(array, valuesToPush);
else
for (var i = 0, j = valuesToPush.length; i < j; i++)
array.push(valuesToPush[i]);
return array;
},
addOrRemoveItem: function(array, value, included) {
var existingEntryIndex = array.indexOf ? array.indexOf(value) : ko.utils.arrayIndexOf(array, value);
if (existingEntryIndex < 0) {
if (included)
array.push(value);
} else {
if (!included)
array.splice(existingEntryIndex, 1);
}
},
extend: function (target, source) {
if (source) {
for(var prop in source) {
if(source.hasOwnProperty(prop)) {
target[prop] = source[prop];
}
}
}
return target;
},
objectForEach: objectForEach,
emptyDomNode: function (domNode) {
while (domNode.firstChild) {
ko.removeNode(domNode.firstChild);
}
},
moveCleanedNodesToContainerElement: function(nodes) {
// Ensure it's a real array, as we're about to reparent the nodes and
// we don't want the underlying collection to change while we're doing that.
var nodesArray = ko.utils.makeArray(nodes);
var container = document.createElement('div');
for (var i = 0, j = nodesArray.length; i < j; i++) {
container.appendChild(ko.cleanNode(nodesArray[i]));
}
return container;
},
cloneNodes: function (nodesArray, shouldCleanNodes) {
for (var i = 0, j = nodesArray.length, newNodesArray = []; i < j; i++) {
var clonedNode = nodesArray[i].cloneNode(true);
newNodesArray.push(shouldCleanNodes ? ko.cleanNode(clonedNode) : clonedNode);
}
return newNodesArray;
},
setDomNodeChildren: function (domNode, childNodes) {
ko.utils.emptyDomNode(domNode);
if (childNodes) {
for (var i = 0, j = childNodes.length; i < j; i++)
domNode.appendChild(childNodes[i]);
}
},
replaceDomNodes: function (nodeToReplaceOrNodeArray, newNodesArray) {
var nodesToReplaceArray = nodeToReplaceOrNodeArray.nodeType ? [nodeToReplaceOrNodeArray] : nodeToReplaceOrNodeArray;
if (nodesToReplaceArray.length > 0) {
var insertionPoint = nodesToReplaceArray[0];
var parent = insertionPoint.parentNode;
for (var i = 0, j = newNodesArray.length; i < j; i++)
parent.insertBefore(newNodesArray[i], insertionPoint);
for (var i = 0, j = nodesToReplaceArray.length; i < j; i++) {
ko.removeNode(nodesToReplaceArray[i]);
}
}
},
setOptionNodeSelectionState: function (optionNode, isSelected) {
// IE6 sometimes throws "unknown error" if you try to write to .selected directly, whereas Firefox struggles with setAttribute. Pick one based on browser.
if (ieVersion < 7)
optionNode.setAttribute("selected", isSelected);
else
optionNode.selected = isSelected;
},
stringTrim: function (string) {
return string === null || string === undefined ? '' :
string.trim ?
string.trim() :
string.toString().replace(/^[\s\xa0]+|[\s\xa0]+$/g, '');
},
stringTokenize: function (string, delimiter) {
var result = [];
var tokens = (string || "").split(delimiter);
for (var i = 0, j = tokens.length; i < j; i++) {
var trimmed = ko.utils.stringTrim(tokens[i]);
if (trimmed !== "")
result.push(trimmed);
}
return result;
},
stringStartsWith: function (string, startsWith) {
string = string || "";
if (startsWith.length > string.length)
return false;
return string.substring(0, startsWith.length) === startsWith;
},
domNodeIsContainedBy: function (node, containedByNode) {
if (containedByNode.compareDocumentPosition)
return (containedByNode.compareDocumentPosition(node) & 16) == 16;
while (node != null) {
if (node == containedByNode)
return true;
node = node.parentNode;
}
return false;
},
domNodeIsAttachedToDocument: function (node) {
return ko.utils.domNodeIsContainedBy(node, node.ownerDocument);
},
anyDomNodeIsAttachedToDocument: function(nodes) {
return !!ko.utils.arrayFirst(nodes, ko.utils.domNodeIsAttachedToDocument);
},
tagNameLower: function(element) {
// For HTML elements, tagName will always be upper case; for XHTML elements, it'll be lower case.
// Possible future optimization: If we know it's an element from an XHTML document (not HTML),
// we don't need to do the .toLowerCase() as it will always be lower case anyway.
return element && element.tagName && element.tagName.toLowerCase();
},
registerEventHandler: function (element, eventType, handler) {
var mustUseAttachEvent = ieVersion && eventsThatMustBeRegisteredUsingAttachEvent[eventType];
if (!mustUseAttachEvent && typeof jQuery != "undefined") {
if (isClickOnCheckableElement(element, eventType)) {
// For click events on checkboxes, jQuery interferes with the event handling in an awkward way:
// it toggles the element checked state *after* the click event handlers run, whereas native
// click events toggle the checked state *before* the event handler.
// Fix this by intecepting the handler and applying the correct checkedness before it runs.
var originalHandler = handler;
handler = function(event, eventData) {
var jQuerySuppliedCheckedState = this.checked;
if (eventData)
this.checked = eventData.checkedStateBeforeEvent !== true;
originalHandler.call(this, event);
this.checked = jQuerySuppliedCheckedState; // Restore the state jQuery applied
};
}
jQuery(element)['bind'](eventType, handler);
} else if (!mustUseAttachEvent && typeof element.addEventListener == "function")
element.addEventListener(eventType, handler, false);
else if (typeof element.attachEvent != "undefined") {
var attachEventHandler = function (event) { handler.call(element, event); },
attachEventName = "on" + eventType;
element.attachEvent(attachEventName, attachEventHandler);
// IE does not dispose attachEvent handlers automatically (unlike with addEventListener)
// so to avoid leaks, we have to remove them manually. See bug #856
ko.utils.domNodeDisposal.addDisposeCallback(element, function() {
element.detachEvent(attachEventName, attachEventHandler);
});
} else
throw new Error("Browser doesn't support addEventListener or attachEvent");
},
triggerEvent: function (element, eventType) {
if (!(element && element.nodeType))
throw new Error("element must be a DOM node when calling triggerEvent");
if (typeof jQuery != "undefined") {
var eventData = [];
if (isClickOnCheckableElement(element, eventType)) {
// Work around the jQuery "click events on checkboxes" issue described above by storing the original checked state before triggering the handler
eventData.push({ checkedStateBeforeEvent: element.checked });
}
jQuery(element)['trigger'](eventType, eventData);
} else if (typeof document.createEvent == "function") {
if (typeof element.dispatchEvent == "function") {
var eventCategory = knownEventTypesByEventName[eventType] || "HTMLEvents";
var event = document.createEvent(eventCategory);
event.initEvent(eventType, true, true, window, 0, 0, 0, 0, 0, false, false, false, false, 0, element);
element.dispatchEvent(event);
}
else
throw new Error("The supplied element doesn't support dispatchEvent");
} else if (typeof element.fireEvent != "undefined") {
// Unlike other browsers, IE doesn't change the checked state of checkboxes/radiobuttons when you trigger their "click" event
// so to make it consistent, we'll do it manually here
if (isClickOnCheckableElement(element, eventType))
element.checked = element.checked !== true;
element.fireEvent("on" + eventType);
}
else
throw new Error("Browser doesn't support triggering events");
},
unwrapObservable: function (value) {
return ko.isObservable(value) ? value() : value;
},
peekObservable: function (value) {
return ko.isObservable(value) ? value.peek() : value;
},
toggleDomNodeCssClass: function (node, classNames, shouldHaveClass) {
if (classNames) {
var cssClassNameRegex = /\S+/g,
currentClassNames = node.className.match(cssClassNameRegex) || [];
ko.utils.arrayForEach(classNames.match(cssClassNameRegex), function(className) {
ko.utils.addOrRemoveItem(currentClassNames, className, shouldHaveClass);
});
node.className = currentClassNames.join(" ");
}
},
setTextContent: function(element, textContent) {
var value = ko.utils.unwrapObservable(textContent);
if ((value === null) || (value === undefined))
value = "";
// We need there to be exactly one child: a text node.
// If there are no children, more than one, or if it's not a text node,
// we'll clear everything and create a single text node.
var innerTextNode = ko.virtualElements.firstChild(element);
if (!innerTextNode || innerTextNode.nodeType != 3 || ko.virtualElements.nextSibling(innerTextNode)) {
ko.virtualElements.setDomNodeChildren(element, [document.createTextNode(value)]);
} else {
innerTextNode.data = value;
}
ko.utils.forceRefresh(element);
},
setElementName: function(element, name) {
element.name = name;
// Workaround IE 6/7 issue
// - https://github.com/SteveSanderson/knockout/issues/197
// - http://www.matts411.com/post/setting_the_name_attribute_in_ie_dom/
if (ieVersion <= 7) {
try {
element.mergeAttributes(document.createElement("<input name='" + element.name + "'/>"), false);
}
catch(e) {} // For IE9 with doc mode "IE9 Standards" and browser mode "IE9 Compatibility View"
}
},
forceRefresh: function(node) {
// Workaround for an IE9 rendering bug - https://github.com/SteveSanderson/knockout/issues/209
if (ieVersion >= 9) {
// For text nodes and comment nodes (most likely virtual elements), we will have to refresh the container
var elem = node.nodeType == 1 ? node : node.parentNode;
if (elem.style)
elem.style.zoom = elem.style.zoom;
}
},
ensureSelectElementIsRenderedCorrectly: function(selectElement) {
// Workaround for IE9 rendering bug - it doesn't reliably display all the text in dynamically-added select boxes unless you force it to re-render by updating the width.
// (See https://github.com/SteveSanderson/knockout/issues/312, http://stackoverflow.com/questions/5908494/select-only-shows-first-char-of-selected-option)
// Also fixes IE7 and IE8 bug that causes selects to be zero width if enclosed by 'if' or 'with'. (See issue #839)
if (ieVersion) {
var originalWidth = selectElement.style.width;
selectElement.style.width = 0;
selectElement.style.width = originalWidth;
}
},
range: function (min, max) {
min = ko.utils.unwrapObservable(min);
max = ko.utils.unwrapObservable(max);
var result = [];
for (var i = min; i <= max; i++)
result.push(i);
return result;
},
makeArray: function(arrayLikeObject) {
var result = [];
for (var i = 0, j = arrayLikeObject.length; i < j; i++) {
result.push(arrayLikeObject[i]);
};
return result;
},
isIe6 : isIe6,
isIe7 : isIe7,
ieVersion : ieVersion,
getFormFields: function(form, fieldName) {
var fields = ko.utils.makeArray(form.getElementsByTagName("input")).concat(ko.utils.makeArray(form.getElementsByTagName("textarea")));
var isMatchingField = (typeof fieldName == 'string')
? function(field) { return field.name === fieldName }
: function(field) { return fieldName.test(field.name) }; // Treat fieldName as regex or object containing predicate
var matches = [];
for (var i = fields.length - 1; i >= 0; i--) {
if (isMatchingField(fields[i]))
matches.push(fields[i]);
};
return matches;
},
parseJson: function (jsonString) {
if (typeof jsonString == "string") {
jsonString = ko.utils.stringTrim(jsonString);
if (jsonString) {
if (JSON && JSON.parse) // Use native parsing where available
return JSON.parse(jsonString);
return (new Function("return " + jsonString))(); // Fallback on less safe parsing for older browsers
}
}
return null;
},
stringifyJson: function (data, replacer, space) { // replacer and space are optional
if (!JSON || !JSON.stringify)
throw new Error("Cannot find JSON.stringify(). Some browsers (e.g., IE < 8) don't support it natively, but you can overcome this by adding a script reference to json2.js, downloadable from http://www.json.org/json2.js");
return JSON.stringify(ko.utils.unwrapObservable(data), replacer, space);
},
postJson: function (urlOrForm, data, options) {
options = options || {};
var params = options['params'] || {};
var includeFields = options['includeFields'] || this.fieldsIncludedWithJsonPost;
var url = urlOrForm;
// If we were given a form, use its 'action' URL and pick out any requested field values
if((typeof urlOrForm == 'object') && (ko.utils.tagNameLower(urlOrForm) === "form")) {
var originalForm = urlOrForm;
url = originalForm.action;
for (var i = includeFields.length - 1; i >= 0; i--) {
var fields = ko.utils.getFormFields(originalForm, includeFields[i]);
for (var j = fields.length - 1; j >= 0; j--)
params[fields[j].name] = fields[j].value;
}
}
data = ko.utils.unwrapObservable(data);
var form = document.createElement("form");
form.style.display = "none";
form.action = url;
form.method = "post";
for (var key in data) {
// Since 'data' this is a model object, we include all properties including those inherited from its prototype
var input = document.createElement("input");
input.name = key;
input.value = ko.utils.stringifyJson(ko.utils.unwrapObservable(data[key]));
form.appendChild(input);
}
objectForEach(params, function(key, value) {
var input = document.createElement("input");
input.name = key;
input.value = value;
form.appendChild(input);
});
document.body.appendChild(form);
options['submitter'] ? options['submitter'](form) : form.submit();
setTimeout(function () { form.parentNode.removeChild(form); }, 0);
}
}
}());
ko.exportSymbol('utils', ko.utils);
ko.exportSymbol('utils.arrayForEach', ko.utils.arrayForEach);
ko.exportSymbol('utils.arrayFirst', ko.utils.arrayFirst);
ko.exportSymbol('utils.arrayFilter', ko.utils.arrayFilter);
ko.exportSymbol('utils.arrayGetDistinctValues', ko.utils.arrayGetDistinctValues);
ko.exportSymbol('utils.arrayIndexOf', ko.utils.arrayIndexOf);
ko.exportSymbol('utils.arrayMap', ko.utils.arrayMap);
ko.exportSymbol('utils.arrayPushAll', ko.utils.arrayPushAll);
ko.exportSymbol('utils.arrayRemoveItem', ko.utils.arrayRemoveItem);
ko.exportSymbol('utils.extend', ko.utils.extend);
ko.exportSymbol('utils.fieldsIncludedWithJsonPost', ko.utils.fieldsIncludedWithJsonPost);
ko.exportSymbol('utils.getFormFields', ko.utils.getFormFields);
ko.exportSymbol('utils.peekObservable', ko.utils.peekObservable);
ko.exportSymbol('utils.postJson', ko.utils.postJson);
ko.exportSymbol('utils.parseJson', ko.utils.parseJson);
ko.exportSymbol('utils.registerEventHandler', ko.utils.registerEventHandler);
ko.exportSymbol('utils.stringifyJson', ko.utils.stringifyJson);
ko.exportSymbol('utils.range', ko.utils.range);
ko.exportSymbol('utils.toggleDomNodeCssClass', ko.utils.toggleDomNodeCssClass);
ko.exportSymbol('utils.triggerEvent', ko.utils.triggerEvent);
ko.exportSymbol('utils.unwrapObservable', ko.utils.unwrapObservable);
ko.exportSymbol('utils.objectForEach', ko.utils.objectForEach);
ko.exportSymbol('utils.addOrRemoveItem', ko.utils.addOrRemoveItem);
ko.exportSymbol('unwrap', ko.utils.unwrapObservable); // Convenient shorthand, because this is used so commonly
if (!Function.prototype['bind']) {
// Function.prototype.bind is a standard part of ECMAScript 5th Edition (December 2009, http://www.ecma-international.org/publications/files/ECMA-ST/ECMA-262.pdf)
// In case the browser doesn't implement it natively, provide a JavaScript implementation. This implementation is based on the one in prototype.js
Function.prototype['bind'] = function (object) {
var originalFunction = this, args = Array.prototype.slice.call(arguments), object = args.shift();
return function () {
return originalFunction.apply(object, args.concat(Array.prototype.slice.call(arguments)));
};
};
}
ko.utils.domData = new (function () {
var uniqueId = 0;
var dataStoreKeyExpandoPropertyName = "__ko__" + (new Date).getTime();
var dataStore = {};
return {
get: function (node, key) {
var allDataForNode = ko.utils.domData.getAll(node, false);
return allDataForNode === undefined ? undefined : allDataForNode[key];
},
set: function (node, key, value) {
if (value === undefined) {
// Make sure we don't actually create a new domData key if we are actually deleting a value
if (ko.utils.domData.getAll(node, false) === undefined)
return;
}
var allDataForNode = ko.utils.domData.getAll(node, true);
allDataForNode[key] = value;
},
getAll: function (node, createIfNotFound) {
var dataStoreKey = node[dataStoreKeyExpandoPropertyName];
var hasExistingDataStore = dataStoreKey && (dataStoreKey !== "null") && dataStore[dataStoreKey];
if (!hasExistingDataStore) {
if (!createIfNotFound)
return undefined;
dataStoreKey = node[dataStoreKeyExpandoPropertyName] = "ko" + uniqueId++;
dataStore[dataStoreKey] = {};
}
return dataStore[dataStoreKey];
},
clear: function (node) {
var dataStoreKey = node[dataStoreKeyExpandoPropertyName];
if (dataStoreKey) {
delete dataStore[dataStoreKey];
node[dataStoreKeyExpandoPropertyName] = null;
return true; // Exposing "did clean" flag purely so specs can infer whether things have been cleaned up as intended
}
return false;
}
}
})();
ko.exportSymbol('utils.domData', ko.utils.domData);
ko.exportSymbol('utils.domData.clear', ko.utils.domData.clear); // Exporting only so specs can clear up after themselves fully
ko.utils.domNodeDisposal = new (function () {
var domDataKey = "__ko_domNodeDisposal__" + (new Date).getTime();
var cleanableNodeTypes = { 1: true, 8: true, 9: true }; // Element, Comment, Document
var cleanableNodeTypesWithDescendants = { 1: true, 9: true }; // Element, Document
function getDisposeCallbacksCollection(node, createIfNotFound) {
var allDisposeCallbacks = ko.utils.domData.get(node, domDataKey);
if ((allDisposeCallbacks === undefined) && createIfNotFound) {
allDisposeCallbacks = [];
ko.utils.domData.set(node, domDataKey, allDisposeCallbacks);
}
return allDisposeCallbacks;
}
function destroyCallbacksCollection(node) {
ko.utils.domData.set(node, domDataKey, undefined);
}
function cleanSingleNode(node) {
// Run all the dispose callbacks
var callbacks = getDisposeCallbacksCollection(node, false);
if (callbacks) {
callbacks = callbacks.slice(0); // Clone, as the array may be modified during iteration (typically, callbacks will remove themselves)
for (var i = 0; i < callbacks.length; i++)
callbacks[i](node);
}
// Also erase the DOM data
ko.utils.domData.clear(node);
// Special support for jQuery here because it's so commonly used.
// Many jQuery plugins (including jquery.tmpl) store data using jQuery's equivalent of domData
// so notify it to tear down any resources associated with the node & descendants here.
if ((typeof jQuery == "function") && (typeof jQuery['cleanData'] == "function"))
jQuery['cleanData']([node]);
// Also clear any immediate-child comment nodes, as these wouldn't have been found by
// node.getElementsByTagName("*") in cleanNode() (comment nodes aren't elements)
if (cleanableNodeTypesWithDescendants[node.nodeType])
cleanImmediateCommentTypeChildren(node);
}
function cleanImmediateCommentTypeChildren(nodeWithChildren) {
var child, nextChild = nodeWithChildren.firstChild;
while (child = nextChild) {
nextChild = child.nextSibling;
if (child.nodeType === 8)
cleanSingleNode(child);
}
}
return {
addDisposeCallback : function(node, callback) {
if (typeof callback != "function")
throw new Error("Callback must be a function");
getDisposeCallbacksCollection(node, true).push(callback);
},
removeDisposeCallback : function(node, callback) {
var callbacksCollection = getDisposeCallbacksCollection(node, false);
if (callbacksCollection) {
ko.utils.arrayRemoveItem(callbacksCollection, callback);
if (callbacksCollection.length == 0)
destroyCallbacksCollection(node);
}
},
cleanNode : function(node) {
// First clean this node, where applicable
if (cleanableNodeTypes[node.nodeType]) {
cleanSingleNode(node);
// ... then its descendants, where applicable
if (cleanableNodeTypesWithDescendants[node.nodeType]) {
// Clone the descendants list in case it changes during iteration
var descendants = [];
ko.utils.arrayPushAll(descendants, node.getElementsByTagName("*"));
for (var i = 0, j = descendants.length; i < j; i++)
cleanSingleNode(descendants[i]);
}
}
return node;
},
removeNode : function(node) {
ko.cleanNode(node);
if (node.parentNode)
node.parentNode.removeChild(node);
}
}
})();
ko.cleanNode = ko.utils.domNodeDisposal.cleanNode; // Shorthand name for convenience
ko.removeNode = ko.utils.domNodeDisposal.removeNode; // Shorthand name for convenience
ko.exportSymbol('cleanNode', ko.cleanNode);
ko.exportSymbol('removeNode', ko.removeNode);
ko.exportSymbol('utils.domNodeDisposal', ko.utils.domNodeDisposal);
ko.exportSymbol('utils.domNodeDisposal.addDisposeCallback', ko.utils.domNodeDisposal.addDisposeCallback);
ko.exportSymbol('utils.domNodeDisposal.removeDisposeCallback', ko.utils.domNodeDisposal.removeDisposeCallback);
(function () {
var leadingCommentRegex = /^(\s*)<!--(.*?)-->/;
function simpleHtmlParse(html) {
// Based on jQuery's "clean" function, but only accounting for table-related elements.
// If you have referenced jQuery, this won't be used anyway - KO will use jQuery's "clean" function directly
// Note that there's still an issue in IE < 9 whereby it will discard comment nodes that are the first child of
// a descendant node. For example: "<div><!-- mycomment -->abc</div>" will get parsed as "<div>abc</div>"
// This won't affect anyone who has referenced jQuery, and there's always the workaround of inserting a dummy node
// (possibly a text node) in front of the comment. So, KO does not attempt to workaround this IE issue automatically at present.
// Trim whitespace, otherwise indexOf won't work as expected
var tags = ko.utils.stringTrim(html).toLowerCase(), div = document.createElement("div");
// Finds the first match from the left column, and returns the corresponding "wrap" data from the right column
var wrap = tags.match(/^<(thead|tbody|tfoot)/) && [1, "<table>", "</table>"] ||
!tags.indexOf("<tr") && [2, "<table><tbody>", "</tbody></table>"] ||
(!tags.indexOf("<td") || !tags.indexOf("<th")) && [3, "<table><tbody><tr>", "</tr></tbody></table>"] ||
/* anything else */ [0, "", ""];
// Go to html and back, then peel off extra wrappers
// Note that we always prefix with some dummy text, because otherwise, IE<9 will strip out leading comment nodes in descendants. Total madness.
var markup = "ignored<div>" + wrap[1] + html + wrap[2] + "</div>";
if (typeof window['innerShiv'] == "function") {
div.appendChild(window['innerShiv'](markup));
} else {
div.innerHTML = markup;
}
// Move to the right depth
while (wrap[0]--)
div = div.lastChild;
return ko.utils.makeArray(div.lastChild.childNodes);
}
function jQueryHtmlParse(html) {
// jQuery's "parseHTML" function was introduced in jQuery 1.8.0 and is a documented public API.
if (jQuery['parseHTML']) {
return jQuery['parseHTML'](html) || []; // Ensure we always return an array and never null
} else {
// For jQuery < 1.8.0, we fall back on the undocumented internal "clean" function.
var elems = jQuery['clean']([html]);
// As of jQuery 1.7.1, jQuery parses the HTML by appending it to some dummy parent nodes held in an in-memory document fragment.
// Unfortunately, it never clears the dummy parent nodes from the document fragment, so it leaks memory over time.
// Fix this by finding the top-most dummy parent element, and detaching it from its owner fragment.
if (elems && elems[0]) {
// Find the top-most parent element that's a direct child of a document fragment
var elem = elems[0];
while (elem.parentNode && elem.parentNode.nodeType !== 11 /* i.e., DocumentFragment */)
elem = elem.parentNode;
// ... then detach it
if (elem.parentNode)
elem.parentNode.removeChild(elem);
}
return elems;
}
}
ko.utils.parseHtmlFragment = function(html) {
return typeof jQuery != 'undefined' ? jQueryHtmlParse(html) // As below, benefit from jQuery's optimisations where possible
: simpleHtmlParse(html); // ... otherwise, this simple logic will do in most common cases.
};
ko.utils.setHtml = function(node, html) {
ko.utils.emptyDomNode(node);
// There's no legitimate reason to display a stringified observable without unwrapping it, so we'll unwrap it
html = ko.utils.unwrapObservable(html);
if ((html !== null) && (html !== undefined)) {
if (typeof html != 'string')
html = html.toString();
// jQuery contains a lot of sophisticated code to parse arbitrary HTML fragments,
// for example <tr> elements which are not normally allowed to exist on their own.
// If you've referenced jQuery we'll use that rather than duplicating its code.
if (typeof jQuery != 'undefined') {
jQuery(node)['html'](html);
} else {
// ... otherwise, use KO's own parsing logic.
var parsedNodes = ko.utils.parseHtmlFragment(html);
for (var i = 0; i < parsedNodes.length; i++)
node.appendChild(parsedNodes[i]);
}
}
};
})();
ko.exportSymbol('utils.parseHtmlFragment', ko.utils.parseHtmlFragment);
ko.exportSymbol('utils.setHtml', ko.utils.setHtml);
ko.memoization = (function () {
var memos = {};
function randomMax8HexChars() {
return (((1 + Math.random()) * 0x100000000) | 0).toString(16).substring(1);
}
function generateRandomId() {
return randomMax8HexChars() + randomMax8HexChars();
}
function findMemoNodes(rootNode, appendToArray) {
if (!rootNode)
return;
if (rootNode.nodeType == 8) {
var memoId = ko.memoization.parseMemoText(rootNode.nodeValue);
if (memoId != null)
appendToArray.push({ domNode: rootNode, memoId: memoId });
} else if (rootNode.nodeType == 1) {
for (var i = 0, childNodes = rootNode.childNodes, j = childNodes.length; i < j; i++)
findMemoNodes(childNodes[i], appendToArray);
}
}
return {
memoize: function (callback) {
if (typeof callback != "function")
throw new Error("You can only pass a function to ko.memoization.memoize()");
var memoId = generateRandomId();
memos[memoId] = callback;
return "<!--[ko_memo:" + memoId + "]-->";
},
unmemoize: function (memoId, callbackParams) {
var callback = memos[memoId];
if (callback === undefined)
throw new Error("Couldn't find any memo with ID " + memoId + ". Perhaps it's already been unmemoized.");
try {
callback.apply(null, callbackParams || []);
return true;
}
finally { delete memos[memoId]; }
},
unmemoizeDomNodeAndDescendants: function (domNode, extraCallbackParamsArray) {
var memos = [];
findMemoNodes(domNode, memos);
for (var i = 0, j = memos.length; i < j; i++) {
var node = memos[i].domNode;
var combinedParams = [node];
if (extraCallbackParamsArray)
ko.utils.arrayPushAll(combinedParams, extraCallbackParamsArray);
ko.memoization.unmemoize(memos[i].memoId, combinedParams);
node.nodeValue = ""; // Neuter this node so we don't try to unmemoize it again
if (node.parentNode)
node.parentNode.removeChild(node); // If possible, erase it totally (not always possible - someone else might just hold a reference to it then call unmemoizeDomNodeAndDescendants again)
}
},
parseMemoText: function (memoText) {
var match = memoText.match(/^\[ko_memo\:(.*?)\]$/);
return match ? match[1] : null;
}
};
})();
ko.exportSymbol('memoization', ko.memoization);
ko.exportSymbol('memoization.memoize', ko.memoization.memoize);
ko.exportSymbol('memoization.unmemoize', ko.memoization.unmemoize);
ko.exportSymbol('memoization.parseMemoText', ko.memoization.parseMemoText);
ko.exportSymbol('memoization.unmemoizeDomNodeAndDescendants', ko.memoization.unmemoizeDomNodeAndDescendants);
ko.extenders = {
'throttle': function(target, timeout) {
// Throttling means two things:
// (1) For dependent observables, we throttle *evaluations* so that, no matter how fast its dependencies
// notify updates, the target doesn't re-evaluate (and hence doesn't notify) faster than a certain rate
target['throttleEvaluation'] = timeout;
// (2) For writable targets (observables, or writable dependent observables), we throttle *writes*
// so the target cannot change value synchronously or faster than a certain rate
var writeTimeoutInstance = null;
return ko.dependentObservable({
'read': target,
'write': function(value) {
clearTimeout(writeTimeoutInstance);
writeTimeoutInstance = setTimeout(function() {
target(value);
}, timeout);
}
});
},
'notify': function(target, notifyWhen) {
target["equalityComparer"] = notifyWhen == "always"
? function() { return false } // Treat all values as not equal
: ko.observable["fn"]["equalityComparer"];
return target;
}
};
function applyExtenders(requestedExtenders) {
var target = this;
if (requestedExtenders) {
ko.utils.objectForEach(requestedExtenders, function(key, value) {
var extenderHandler = ko.extenders[key];
if (typeof extenderHandler == 'function') {
target = extenderHandler(target, value);
}
});
}
return target;
}
ko.exportSymbol('extenders', ko.extenders);
ko.subscription = function (target, callback, disposeCallback) {
this.target = target;
this.callback = callback;
this.disposeCallback = disposeCallback;
ko.exportProperty(this, 'dispose', this.dispose);
};
ko.subscription.prototype.dispose = function () {
this.isDisposed = true;
this.disposeCallback();
};
ko.subscribable = function () {
this._subscriptions = {};
ko.utils.extend(this, ko.subscribable['fn']);
ko.exportProperty(this, 'subscribe', this.subscribe);
ko.exportProperty(this, 'extend', this.extend);
ko.exportProperty(this, 'getSubscriptionsCount', this.getSubscriptionsCount);
}
var defaultEvent = "change";
ko.subscribable['fn'] = {
subscribe: function (callback, callbackTarget, event) {
event = event || defaultEvent;
var boundCallback = callbackTarget ? callback.bind(callbackTarget) : callback;
var subscription = new ko.subscription(this, boundCallback, function () {
ko.utils.arrayRemoveItem(this._subscriptions[event], subscription);
}.bind(this));
if (!this._subscriptions[event])
this._subscriptions[event] = [];
this._subscriptions[event].push(subscription);
return subscription;
},
"notifySubscribers": function (valueToNotify, event) {
event = event || defaultEvent;
if (this._subscriptions[event]) {
ko.dependencyDetection.ignore(function() {
ko.utils.arrayForEach(this._subscriptions[event].slice(0), function (subscription) {
// In case a subscription was disposed during the arrayForEach cycle, check
// for isDisposed on each subscription before invoking its callback
if (subscription && (subscription.isDisposed !== true))
subscription.callback(valueToNotify);
});
}, this);
}
},
getSubscriptionsCount: function () {
var total = 0;
ko.utils.objectForEach(this._subscriptions, function(eventName, subscriptions) {
total += subscriptions.length;
});
return total;
},
extend: applyExtenders
};
ko.isSubscribable = function (instance) {
return instance != null && typeof instance.subscribe == "function" && typeof instance["notifySubscribers"] == "function";
};
ko.exportSymbol('subscribable', ko.subscribable);
ko.exportSymbol('isSubscribable', ko.isSubscribable);
ko.dependencyDetection = (function () {
var _frames = [];
return {
begin: function (callback) {
_frames.push({ callback: callback, distinctDependencies:[] });
},
end: function () {
_frames.pop();
},
registerDependency: function (subscribable) {
if (!ko.isSubscribable(subscribable))
throw new Error("Only subscribable things can act as dependencies");
if (_frames.length > 0) {
var topFrame = _frames[_frames.length - 1];
if (!topFrame || ko.utils.arrayIndexOf(topFrame.distinctDependencies, subscribable) >= 0)
return;
topFrame.distinctDependencies.push(subscribable);
topFrame.callback(subscribable);
}
},
ignore: function(callback, callbackTarget, callbackArgs) {
try {
_frames.push(null);
return callback.apply(callbackTarget, callbackArgs || []);
} finally {
_frames.pop();
}
}
};
})();
var primitiveTypes = { 'undefined':true, 'boolean':true, 'number':true, 'string':true };
ko.observable = function (initialValue) {
var _latestValue = initialValue;
function observable() {
if (arguments.length > 0) {
// Write
// Ignore writes if the value hasn't changed
if ((!observable['equalityComparer']) || !observable['equalityComparer'](_latestValue, arguments[0])) {
observable.valueWillMutate();
_latestValue = arguments[0];
if (DEBUG) observable._latestValue = _latestValue;
observable.valueHasMutated();
}
return this; // Permits chained assignments
}
else {
// Read
ko.dependencyDetection.registerDependency(observable); // The caller only needs to be notified of changes if they did a "read" operation
return _latestValue;
}
}
if (DEBUG) observable._latestValue = _latestValue;
ko.subscribable.call(observable);
observable.peek = function() { return _latestValue };
observable.valueHasMutated = function () { observable["notifySubscribers"](_latestValue); }
observable.valueWillMutate = function () { observable["notifySubscribers"](_latestValue, "beforeChange"); }
ko.utils.extend(observable, ko.observable['fn']);
ko.exportProperty(observable, 'peek', observable.peek);
ko.exportProperty(observable, "valueHasMutated", observable.valueHasMutated);
ko.exportProperty(observable, "valueWillMutate", observable.valueWillMutate);
return observable;
}
ko.observable['fn'] = {
"equalityComparer": function valuesArePrimitiveAndEqual(a, b) {
var oldValueIsPrimitive = (a === null) || (typeof(a) in primitiveTypes);
return oldValueIsPrimitive ? (a === b) : false;
}
};
var protoProperty = ko.observable.protoProperty = "__ko_proto__";
ko.observable['fn'][protoProperty] = ko.observable;
ko.hasPrototype = function(instance, prototype) {
if ((instance === null) || (instance === undefined) || (instance[protoProperty] === undefined)) return false;
if (instance[protoProperty] === prototype) return true;
return ko.hasPrototype(instance[protoProperty], prototype); // Walk the prototype chain
};
ko.isObservable = function (instance) {
return ko.hasPrototype(instance, ko.observable);
}
ko.isWriteableObservable = function (instance) {
// Observable
if ((typeof instance == "function") && instance[protoProperty] === ko.observable)
return true;
// Writeable dependent observable
if ((typeof instance == "function") && (instance[protoProperty] === ko.dependentObservable) && (instance.hasWriteFunction))
return true;
// Anything else
return false;
}
ko.exportSymbol('observable', ko.observable);
ko.exportSymbol('isObservable', ko.isObservable);
ko.exportSymbol('isWriteableObservable', ko.isWriteableObservable);
ko.observableArray = function (initialValues) {
initialValues = initialValues || [];
if (typeof initialValues != 'object' || !('length' in initialValues))
throw new Error("The argument passed when initializing an observable array must be an array, or null, or undefined.");
var result = ko.observable(initialValues);
ko.utils.extend(result, ko.observableArray['fn']);
return result;
};
ko.observableArray['fn'] = {
'remove': function (valueOrPredicate) {
var underlyingArray = this.peek();
var removedValues = [];
var predicate = typeof valueOrPredicate == "function" ? valueOrPredicate : function (value) { return value === valueOrPredicate; };
for (var i = 0; i < underlyingArray.length; i++) {
var value = underlyingArray[i];
if (predicate(value)) {
if (removedValues.length === 0) {
this.valueWillMutate();
}
removedValues.push(value);
underlyingArray.splice(i, 1);
i--;
}
}
if (removedValues.length) {
this.valueHasMutated();
}
return removedValues;
},
'removeAll': function (arrayOfValues) {
// If you passed zero args, we remove everything
if (arrayOfValues === undefined) {
var underlyingArray = this.peek();
var allValues = underlyingArray.slice(0);
this.valueWillMutate();
underlyingArray.splice(0, underlyingArray.length);
this.valueHasMutated();
return allValues;
}
// If you passed an arg, we interpret it as an array of entries to remove
if (!arrayOfValues)
return [];
return this['remove'](function (value) {
return ko.utils.arrayIndexOf(arrayOfValues, value) >= 0;
});
},
'destroy': function (valueOrPredicate) {
var underlyingArray = this.peek();
var predicate = typeof valueOrPredicate == "function" ? valueOrPredicate : function (value) { return value === valueOrPredicate; };
this.valueWillMutate();
for (var i = underlyingArray.length - 1; i >= 0; i--) {
var value = underlyingArray[i];
if (predicate(value))
underlyingArray[i]["_destroy"] = true;
}
this.valueHasMutated();
},
'destroyAll': function (arrayOfValues) {
// If you passed zero args, we destroy everything
if (arrayOfValues === undefined)
return this['destroy'](function() { return true });
// If you passed an arg, we interpret it as an array of entries to destroy
if (!arrayOfValues)
return [];
return this['destroy'](function (value) {
return ko.utils.arrayIndexOf(arrayOfValues, value) >= 0;
});
},
'indexOf': function (item) {
var underlyingArray = this();
return ko.utils.arrayIndexOf(underlyingArray, item);
},
'replace': function(oldItem, newItem) {
var index = this['indexOf'](oldItem);
if (index >= 0) {
this.valueWillMutate();
this.peek()[index] = newItem;
this.valueHasMutated();
}
}
};
// Populate ko.observableArray.fn with read/write functions from native arrays
// Important: Do not add any additional functions here that may reasonably be used to *read* data from the array
// because we'll eval them without causing subscriptions, so ko.computed output could end up getting stale
ko.utils.arrayForEach(["pop", "push", "reverse", "shift", "sort", "splice", "unshift"], function (methodName) {
ko.observableArray['fn'][methodName] = function () {
// Use "peek" to avoid creating a subscription in any computed that we're executing in the context of
// (for consistency with mutating regular observables)
var underlyingArray = this.peek();
this.valueWillMutate();
var methodCallResult = underlyingArray[methodName].apply(underlyingArray, arguments);
this.valueHasMutated();
return methodCallResult;
};
});
// Populate ko.observableArray.fn with read-only functions from native arrays
ko.utils.arrayForEach(["slice"], function (methodName) {
ko.observableArray['fn'][methodName] = function () {
var underlyingArray = this();
return underlyingArray[methodName].apply(underlyingArray, arguments);
};
});
ko.exportSymbol('observableArray', ko.observableArray);
ko.dependentObservable = function (evaluatorFunctionOrOptions, evaluatorFunctionTarget, options) {
var _latestValue,
_hasBeenEvaluated = false,
_isBeingEvaluated = false,
readFunction = evaluatorFunctionOrOptions;
if (readFunction && typeof readFunction == "object") {
// Single-parameter syntax - everything is on this "options" param
options = readFunction;
readFunction = options["read"];
} else {
// Multi-parameter syntax - construct the options according to the params passed
options = options || {};
if (!readFunction)
readFunction = options["read"];
}
if (typeof readFunction != "function")
throw new Error("Pass a function that returns the value of the ko.computed");
function addSubscriptionToDependency(subscribable) {
_subscriptionsToDependencies.push(subscribable.subscribe(evaluatePossiblyAsync));
}
function disposeAllSubscriptionsToDependencies() {
ko.utils.arrayForEach(_subscriptionsToDependencies, function (subscription) {
subscription.dispose();
});
_subscriptionsToDependencies = [];
}
function evaluatePossiblyAsync() {
var throttleEvaluationTimeout = dependentObservable['throttleEvaluation'];
if (throttleEvaluationTimeout && throttleEvaluationTimeout >= 0) {
clearTimeout(evaluationTimeoutInstance);
evaluationTimeoutInstance = setTimeout(evaluateImmediate, throttleEvaluationTimeout);
} else
evaluateImmediate();
}
function evaluateImmediate() {
if (_isBeingEvaluated) {
// If the evaluation of a ko.computed causes side effects, it's possible that it will trigger its own re-evaluation.
// This is not desirable (it's hard for a developer to realise a chain of dependencies might cause this, and they almost
// certainly didn't intend infinite re-evaluations). So, for predictability, we simply prevent ko.computeds from causing
// their own re-evaluation. Further discussion at https://github.com/SteveSanderson/knockout/pull/387
return;
}
// Don't dispose on first evaluation, because the "disposeWhen" callback might
// e.g., dispose when the associated DOM element isn't in the doc, and it's not
// going to be in the doc until *after* the first evaluation
if (_hasBeenEvaluated && disposeWhen()) {
dispose();
return;
}
_isBeingEvaluated = true;
try {
// Initially, we assume that none of the subscriptions are still being used (i.e., all are candidates for disposal).
// Then, during evaluation, we cross off any that are in fact still being used.
var disposalCandidates = ko.utils.arrayMap(_subscriptionsToDependencies, function(item) {return item.target;});
ko.dependencyDetection.begin(function(subscribable) {
var inOld;
if ((inOld = ko.utils.arrayIndexOf(disposalCandidates, subscribable)) >= 0)
disposalCandidates[inOld] = undefined; // Don't want to dispose this subscription, as it's still being used
else
addSubscriptionToDependency(subscribable); // Brand new subscription - add it
});
var newValue = readFunction.call(evaluatorFunctionTarget);
// For each subscription no longer being used, remove it from the active subscriptions list and dispose it
for (var i = disposalCandidates.length - 1; i >= 0; i--) {
if (disposalCandidates[i])
_subscriptionsToDependencies.splice(i, 1)[0].dispose();
}
_hasBeenEvaluated = true;
dependentObservable["notifySubscribers"](_latestValue, "beforeChange");
_latestValue = newValue;
if (DEBUG) dependentObservable._latestValue = _latestValue;
dependentObservable["notifySubscribers"](_latestValue);
} finally {
ko.dependencyDetection.end();
_isBeingEvaluated = false;
}
if (!_subscriptionsToDependencies.length)
dispose();
}
function dependentObservable() {
if (arguments.length > 0) {
if (typeof writeFunction === "function") {
// Writing a value
writeFunction.apply(evaluatorFunctionTarget, arguments);
} else {
throw new Error("Cannot write a value to a ko.computed unless you specify a 'write' option. If you wish to read the current value, don't pass any parameters.");
}
return this; // Permits chained assignments
} else {
// Reading the value
if (!_hasBeenEvaluated)
evaluateImmediate();
ko.dependencyDetection.registerDependency(dependentObservable);
return _latestValue;
}
}
function peek() {
if (!_hasBeenEvaluated)
evaluateImmediate();
return _latestValue;
}
function isActive() {
return !_hasBeenEvaluated || _subscriptionsToDependencies.length > 0;
}
// By here, "options" is always non-null
var writeFunction = options["write"],
disposeWhenNodeIsRemoved = options["disposeWhenNodeIsRemoved"] || options.disposeWhenNodeIsRemoved || null,
disposeWhen = options["disposeWhen"] || options.disposeWhen || function() { return false; },
dispose = disposeAllSubscriptionsToDependencies,
_subscriptionsToDependencies = [],
evaluationTimeoutInstance = null;
if (!evaluatorFunctionTarget)
evaluatorFunctionTarget = options["owner"];
dependentObservable.peek = peek;
dependentObservable.getDependenciesCount = function () { return _subscriptionsToDependencies.length; };
dependentObservable.hasWriteFunction = typeof options["write"] === "function";
dependentObservable.dispose = function () { dispose(); };
dependentObservable.isActive = isActive;
ko.subscribable.call(dependentObservable);
ko.utils.extend(dependentObservable, ko.dependentObservable['fn']);
ko.exportProperty(dependentObservable, 'peek', dependentObservable.peek);
ko.exportProperty(dependentObservable, 'dispose', dependentObservable.dispose);
ko.exportProperty(dependentObservable, 'isActive', dependentObservable.isActive);
ko.exportProperty(dependentObservable, 'getDependenciesCount', dependentObservable.getDependenciesCount);
// Evaluate, unless deferEvaluation is true
if (options['deferEvaluation'] !== true)
evaluateImmediate();
// Build "disposeWhenNodeIsRemoved" and "disposeWhenNodeIsRemovedCallback" option values.
// But skip if isActive is false (there will never be any dependencies to dispose).
// (Note: "disposeWhenNodeIsRemoved" option both proactively disposes as soon as the node is removed using ko.removeNode(),
// plus adds a "disposeWhen" callback that, on each evaluation, disposes if the node was removed by some other means.)
if (disposeWhenNodeIsRemoved && isActive()) {
dispose = function() {
ko.utils.domNodeDisposal.removeDisposeCallback(disposeWhenNodeIsRemoved, dispose);
disposeAllSubscriptionsToDependencies();
};
ko.utils.domNodeDisposal.addDisposeCallback(disposeWhenNodeIsRemoved, dispose);
var existingDisposeWhenFunction = disposeWhen;
disposeWhen = function () {
return !ko.utils.domNodeIsAttachedToDocument(disposeWhenNodeIsRemoved) || existingDisposeWhenFunction();
}
}
return dependentObservable;
};
ko.isComputed = function(instance) {
return ko.hasPrototype(instance, ko.dependentObservable);
};
var protoProp = ko.observable.protoProperty; // == "__ko_proto__"
ko.dependentObservable[protoProp] = ko.observable;
ko.dependentObservable['fn'] = {};
ko.dependentObservable['fn'][protoProp] = ko.dependentObservable;
ko.exportSymbol('dependentObservable', ko.dependentObservable);
ko.exportSymbol('computed', ko.dependentObservable); // Make "ko.computed" an alias for "ko.dependentObservable"
ko.exportSymbol('isComputed', ko.isComputed);
(function() {
var maxNestedObservableDepth = 10; // Escape the (unlikely) pathalogical case where an observable's current value is itself (or similar reference cycle)
ko.toJS = function(rootObject) {
if (arguments.length == 0)
throw new Error("When calling ko.toJS, pass the object you want to convert.");
// We just unwrap everything at every level in the object graph
return mapJsObjectGraph(rootObject, function(valueToMap) {
// Loop because an observable's value might in turn be another observable wrapper
for (var i = 0; ko.isObservable(valueToMap) && (i < maxNestedObservableDepth); i++)
valueToMap = valueToMap();
return valueToMap;
});
};
ko.toJSON = function(rootObject, replacer, space) { // replacer and space are optional
var plainJavaScriptObject = ko.toJS(rootObject);
return ko.utils.stringifyJson(plainJavaScriptObject, replacer, space);
};
function mapJsObjectGraph(rootObject, mapInputCallback, visitedObjects) {
visitedObjects = visitedObjects || new objectLookup();
rootObject = mapInputCallback(rootObject);
var canHaveProperties = (typeof rootObject == "object") && (rootObject !== null) && (rootObject !== undefined) && (!(rootObject instanceof Date)) && (!(rootObject instanceof String)) && (!(rootObject instanceof Number)) && (!(rootObject instanceof Boolean));
if (!canHaveProperties)
return rootObject;
var outputProperties = rootObject instanceof Array ? [] : {};
visitedObjects.save(rootObject, outputProperties);
visitPropertiesOrArrayEntries(rootObject, function(indexer) {
var propertyValue = mapInputCallback(rootObject[indexer]);
switch (typeof propertyValue) {
case "boolean":
case "number":
case "string":
case "function":
outputProperties[indexer] = propertyValue;
break;
case "object":
case "undefined":
var previouslyMappedValue = visitedObjects.get(propertyValue);
outputProperties[indexer] = (previouslyMappedValue !== undefined)
? previouslyMappedValue
: mapJsObjectGraph(propertyValue, mapInputCallback, visitedObjects);
break;
}
});
return outputProperties;
}
function visitPropertiesOrArrayEntries(rootObject, visitorCallback) {
if (rootObject instanceof Array) {
for (var i = 0; i < rootObject.length; i++)
visitorCallback(i);
// For arrays, also respect toJSON property for custom mappings (fixes #278)
if (typeof rootObject['toJSON'] == 'function')
visitorCallback('toJSON');
} else {
for (var propertyName in rootObject) {
visitorCallback(propertyName);
}
}
};
function objectLookup() {
this.keys = [];
this.values = [];
};
objectLookup.prototype = {
constructor: objectLookup,
save: function(key, value) {
var existingIndex = ko.utils.arrayIndexOf(this.keys, key);
if (existingIndex >= 0)
this.values[existingIndex] = value;
else {
this.keys.push(key);
this.values.push(value);
}
},
get: function(key) {
var existingIndex = ko.utils.arrayIndexOf(this.keys, key);
return (existingIndex >= 0) ? this.values[existingIndex] : undefined;
}
};
})();
ko.exportSymbol('toJS', ko.toJS);
ko.exportSymbol('toJSON', ko.toJSON);
(function () {
var hasDomDataExpandoProperty = '__ko__hasDomDataOptionValue__';
// Normally, SELECT elements and their OPTIONs can only take value of type 'string' (because the values
// are stored on DOM attributes). ko.selectExtensions provides a way for SELECTs/OPTIONs to have values
// that are arbitrary objects. This is very convenient when implementing things like cascading dropdowns.
ko.selectExtensions = {
readValue : function(element) {
switch (ko.utils.tagNameLower(element)) {
case 'option':
if (element[hasDomDataExpandoProperty] === true)
return ko.utils.domData.get(element, ko.bindingHandlers.options.optionValueDomDataKey);
return ko.utils.ieVersion <= 7
? (element.getAttributeNode('value') && element.getAttributeNode('value').specified ? element.value : element.text)
: element.value;
case 'select':
return element.selectedIndex >= 0 ? ko.selectExtensions.readValue(element.options[element.selectedIndex]) : undefined;
default:
return element.value;
}
},
writeValue: function(element, value) {
switch (ko.utils.tagNameLower(element)) {
case 'option':
switch(typeof value) {
case "string":
ko.utils.domData.set(element, ko.bindingHandlers.options.optionValueDomDataKey, undefined);
if (hasDomDataExpandoProperty in element) { // IE <= 8 throws errors if you delete non-existent properties from a DOM node
delete element[hasDomDataExpandoProperty];
}
element.value = value;
break;
default:
// Store arbitrary object using DomData
ko.utils.domData.set(element, ko.bindingHandlers.options.optionValueDomDataKey, value);
element[hasDomDataExpandoProperty] = true;
// Special treatment of numbers is just for backward compatibility. KO 1.2.1 wrote numerical values to element.value.
element.value = typeof value === "number" ? value : "";
break;
}
break;
case 'select':
if (value === "")
value = undefined;
if (value === null || value === undefined)
element.selectedIndex = -1;
for (var i = element.options.length - 1; i >= 0; i--) {
if (ko.selectExtensions.readValue(element.options[i]) == value) {
element.selectedIndex = i;
break;
}
}
// for drop-down select, ensure first is selected
if (!(element.size > 1) && element.selectedIndex === -1) {
element.selectedIndex = 0;
}
break;
default:
if ((value === null) || (value === undefined))
value = "";
element.value = value;
break;
}
}
};
})();
ko.exportSymbol('selectExtensions', ko.selectExtensions);
ko.exportSymbol('selectExtensions.readValue', ko.selectExtensions.readValue);
ko.exportSymbol('selectExtensions.writeValue', ko.selectExtensions.writeValue);
ko.expressionRewriting = (function () {
var restoreCapturedTokensRegex = /\@ko_token_(\d+)\@/g;
var javaScriptReservedWords = ["true", "false", "null", "undefined"];
// Matches something that can be assigned to--either an isolated identifier or something ending with a property accessor
// This is designed to be simple and avoid false negatives, but could produce false positives (e.g., a+b.c).
var javaScriptAssignmentTarget = /^(?:[$_a-z][$\w]*|(.+)(\.\s*[$_a-z][$\w]*|\[.+\]))$/i;
function restoreTokens(string, tokens) {
var prevValue = null;
while (string != prevValue) { // Keep restoring tokens until it no longer makes a difference (they may be nested)
prevValue = string;
string = string.replace(restoreCapturedTokensRegex, function (match, tokenIndex) {
return tokens[tokenIndex];
});
}
return string;
}
function getWriteableValue(expression) {
if (ko.utils.arrayIndexOf(javaScriptReservedWords, ko.utils.stringTrim(expression).toLowerCase()) >= 0)
return false;
var match = expression.match(javaScriptAssignmentTarget);
return match === null ? false : match[1] ? ('Object(' + match[1] + ')' + match[2]) : expression;
}
function ensureQuoted(key) {
var trimmedKey = ko.utils.stringTrim(key);
switch (trimmedKey.length && trimmedKey.charAt(0)) {
case "'":
case '"':
return key;
default:
return "'" + trimmedKey + "'";
}
}
return {
bindingRewriteValidators: [],
parseObjectLiteral: function(objectLiteralString) {
// A full tokeniser+lexer would add too much weight to this library, so here's a simple parser
// that is sufficient just to split an object literal string into a set of top-level key-value pairs
var str = ko.utils.stringTrim(objectLiteralString);
if (str.length < 3)
return [];
if (str.charAt(0) === "{")// Ignore any braces surrounding the whole object literal
str = str.substring(1, str.length - 1);
// Pull out any string literals and regex literals
var tokens = [];
var tokenStart = null, tokenEndChar;
for (var position = 0; position < str.length; position++) {
var c = str.charAt(position);
if (tokenStart === null) {
switch (c) {
case '"':
case "'":
case "/":
tokenStart = position;
tokenEndChar = c;
break;
}
} else if ((c == tokenEndChar) && (str.charAt(position - 1) !== "\\")) {
var token = str.substring(tokenStart, position + 1);
tokens.push(token);
var replacement = "@ko_token_" + (tokens.length - 1) + "@";
str = str.substring(0, tokenStart) + replacement + str.substring(position + 1);
position -= (token.length - replacement.length);
tokenStart = null;
}
}
// Next pull out balanced paren, brace, and bracket blocks
tokenStart = null;
tokenEndChar = null;
var tokenDepth = 0, tokenStartChar = null;
for (var position = 0; position < str.length; position++) {
var c = str.charAt(position);
if (tokenStart === null) {
switch (c) {
case "{": tokenStart = position; tokenStartChar = c;
tokenEndChar = "}";
break;
case "(": tokenStart = position; tokenStartChar = c;
tokenEndChar = ")";
break;
case "[": tokenStart = position; tokenStartChar = c;
tokenEndChar = "]";
break;
}
}
if (c === tokenStartChar)
tokenDepth++;
else if (c === tokenEndChar) {
tokenDepth--;
if (tokenDepth === 0) {
var token = str.substring(tokenStart, position + 1);
tokens.push(token);
var replacement = "@ko_token_" + (tokens.length - 1) + "@";
str = str.substring(0, tokenStart) + replacement + str.substring(position + 1);
position -= (token.length - replacement.length);
tokenStart = null;
}
}
}
// Now we can safely split on commas to get the key/value pairs
var result = [];
var keyValuePairs = str.split(",");
for (var i = 0, j = keyValuePairs.length; i < j; i++) {
var pair = keyValuePairs[i];
var colonPos = pair.indexOf(":");
if ((colonPos > 0) && (colonPos < pair.length - 1)) {
var key = pair.substring(0, colonPos);
var value = pair.substring(colonPos + 1);
result.push({ 'key': restoreTokens(key, tokens), 'value': restoreTokens(value, tokens) });
} else {
result.push({ 'unknown': restoreTokens(pair, tokens) });
}
}
return result;
},
preProcessBindings: function (objectLiteralStringOrKeyValueArray) {
var keyValueArray = typeof objectLiteralStringOrKeyValueArray === "string"
? ko.expressionRewriting.parseObjectLiteral(objectLiteralStringOrKeyValueArray)
: objectLiteralStringOrKeyValueArray;
var resultStrings = [], propertyAccessorResultStrings = [];
var keyValueEntry;
for (var i = 0; keyValueEntry = keyValueArray[i]; i++) {
if (resultStrings.length > 0)
resultStrings.push(",");
if (keyValueEntry['key']) {
var quotedKey = ensureQuoted(keyValueEntry['key']), val = keyValueEntry['value'];
resultStrings.push(quotedKey);
resultStrings.push(":");
resultStrings.push(val);
if (val = getWriteableValue(ko.utils.stringTrim(val))) {
if (propertyAccessorResultStrings.length > 0)
propertyAccessorResultStrings.push(", ");
propertyAccessorResultStrings.push(quotedKey + " : function(__ko_value) { " + val + " = __ko_value; }");
}
} else if (keyValueEntry['unknown']) {
resultStrings.push(keyValueEntry['unknown']);
}
}
var combinedResult = resultStrings.join("");
if (propertyAccessorResultStrings.length > 0) {
var allPropertyAccessors = propertyAccessorResultStrings.join("");
combinedResult = combinedResult + ", '_ko_property_writers' : { " + allPropertyAccessors + " } ";
}
return combinedResult;
},
keyValueArrayContainsKey: function(keyValueArray, key) {
for (var i = 0; i < keyValueArray.length; i++)
if (ko.utils.stringTrim(keyValueArray[i]['key']) == key)
return true;
return false;
},
// Internal, private KO utility for updating model properties from within bindings
// property: If the property being updated is (or might be) an observable, pass it here
// If it turns out to be a writable observable, it will be written to directly
// allBindingsAccessor: All bindings in the current execution context.
// This will be searched for a '_ko_property_writers' property in case you're writing to a non-observable
// key: The key identifying the property to be written. Example: for { hasFocus: myValue }, write to 'myValue' by specifying the key 'hasFocus'
// value: The value to be written
// checkIfDifferent: If true, and if the property being written is a writable observable, the value will only be written if
// it is !== existing value on that writable observable
writeValueToProperty: function(property, allBindingsAccessor, key, value, checkIfDifferent) {
if (!property || !ko.isObservable(property)) {
var propWriters = allBindingsAccessor()['_ko_property_writers'];
if (propWriters && propWriters[key])
propWriters[key](value);
} else if (ko.isWriteableObservable(property) && (!checkIfDifferent || property.peek() !== value)) {
property(value);
}
}
};
})();
ko.exportSymbol('expressionRewriting', ko.expressionRewriting);
ko.exportSymbol('expressionRewriting.bindingRewriteValidators', ko.expressionRewriting.bindingRewriteValidators);
ko.exportSymbol('expressionRewriting.parseObjectLiteral', ko.expressionRewriting.parseObjectLiteral);
ko.exportSymbol('expressionRewriting.preProcessBindings', ko.expressionRewriting.preProcessBindings);
// For backward compatibility, define the following aliases. (Previously, these function names were misleading because
// they referred to JSON specifically, even though they actually work with arbitrary JavaScript object literal expressions.)
ko.exportSymbol('jsonExpressionRewriting', ko.expressionRewriting);
ko.exportSymbol('jsonExpressionRewriting.insertPropertyAccessorsIntoJson', ko.expressionRewriting.preProcessBindings);(function() {
// "Virtual elements" is an abstraction on top of the usual DOM API which understands the notion that comment nodes
// may be used to represent hierarchy (in addition to the DOM's natural hierarchy).
// If you call the DOM-manipulating functions on ko.virtualElements, you will be able to read and write the state
// of that virtual hierarchy
//
// The point of all this is to support containerless templates (e.g., <!-- ko foreach:someCollection -->blah<!-- /ko -->)
// without having to scatter special cases all over the binding and templating code.
// IE 9 cannot reliably read the "nodeValue" property of a comment node (see https://github.com/SteveSanderson/knockout/issues/186)
// but it does give them a nonstandard alternative property called "text" that it can read reliably. Other browsers don't have that property.
// So, use node.text where available, and node.nodeValue elsewhere
var commentNodesHaveTextProperty = document && document.createComment("test").text === "<!--test-->";
var startCommentRegex = commentNodesHaveTextProperty ? /^<!--\s*ko(?:\s+(.+\s*\:[\s\S]*))?\s*-->$/ : /^\s*ko(?:\s+(.+\s*\:[\s\S]*))?\s*$/;
var endCommentRegex = commentNodesHaveTextProperty ? /^<!--\s*\/ko\s*-->$/ : /^\s*\/ko\s*$/;
var htmlTagsWithOptionallyClosingChildren = { 'ul': true, 'ol': true };
function isStartComment(node) {
return (node.nodeType == 8) && (commentNodesHaveTextProperty ? node.text : node.nodeValue).match(startCommentRegex);
}
function isEndComment(node) {
return (node.nodeType == 8) && (commentNodesHaveTextProperty ? node.text : node.nodeValue).match(endCommentRegex);
}
function getVirtualChildren(startComment, allowUnbalanced) {
var currentNode = startComment;
var depth = 1;
var children = [];
while (currentNode = currentNode.nextSibling) {
if (isEndComment(currentNode)) {
depth--;
if (depth === 0)
return children;
}
children.push(currentNode);
if (isStartComment(currentNode))
depth++;
}
if (!allowUnbalanced)
throw new Error("Cannot find closing comment tag to match: " + startComment.nodeValue);
return null;
}
function getMatchingEndComment(startComment, allowUnbalanced) {
var allVirtualChildren = getVirtualChildren(startComment, allowUnbalanced);
if (allVirtualChildren) {
if (allVirtualChildren.length > 0)
return allVirtualChildren[allVirtualChildren.length - 1].nextSibling;
return startComment.nextSibling;
} else
return null; // Must have no matching end comment, and allowUnbalanced is true
}
function getUnbalancedChildTags(node) {
// e.g., from <div>OK</div><!-- ko blah --><span>Another</span>, returns: <!-- ko blah --><span>Another</span>
// from <div>OK</div><!-- /ko --><!-- /ko -->, returns: <!-- /ko --><!-- /ko -->
var childNode = node.firstChild, captureRemaining = null;
if (childNode) {
do {
if (captureRemaining) // We already hit an unbalanced node and are now just scooping up all subsequent nodes
captureRemaining.push(childNode);
else if (isStartComment(childNode)) {
var matchingEndComment = getMatchingEndComment(childNode, /* allowUnbalanced: */ true);
if (matchingEndComment) // It's a balanced tag, so skip immediately to the end of this virtual set
childNode = matchingEndComment;
else
captureRemaining = [childNode]; // It's unbalanced, so start capturing from this point
} else if (isEndComment(childNode)) {
captureRemaining = [childNode]; // It's unbalanced (if it wasn't, we'd have skipped over it already), so start capturing
}
} while (childNode = childNode.nextSibling);
}
return captureRemaining;
}
ko.virtualElements = {
allowedBindings: {},
childNodes: function(node) {
return isStartComment(node) ? getVirtualChildren(node) : node.childNodes;
},
emptyNode: function(node) {
if (!isStartComment(node))
ko.utils.emptyDomNode(node);
else {
var virtualChildren = ko.virtualElements.childNodes(node);
for (var i = 0, j = virtualChildren.length; i < j; i++)
ko.removeNode(virtualChildren[i]);
}
},
setDomNodeChildren: function(node, childNodes) {
if (!isStartComment(node))
ko.utils.setDomNodeChildren(node, childNodes);
else {
ko.virtualElements.emptyNode(node);
var endCommentNode = node.nextSibling; // Must be the next sibling, as we just emptied the children
for (var i = 0, j = childNodes.length; i < j; i++)
endCommentNode.parentNode.insertBefore(childNodes[i], endCommentNode);
}
},
prepend: function(containerNode, nodeToPrepend) {
if (!isStartComment(containerNode)) {
if (containerNode.firstChild)
containerNode.insertBefore(nodeToPrepend, containerNode.firstChild);
else
containerNode.appendChild(nodeToPrepend);
} else {
// Start comments must always have a parent and at least one following sibling (the end comment)
containerNode.parentNode.insertBefore(nodeToPrepend, containerNode.nextSibling);
}
},
insertAfter: function(containerNode, nodeToInsert, insertAfterNode) {
if (!insertAfterNode) {
ko.virtualElements.prepend(containerNode, nodeToInsert);
} else if (!isStartComment(containerNode)) {
// Insert after insertion point
if (insertAfterNode.nextSibling)
containerNode.insertBefore(nodeToInsert, insertAfterNode.nextSibling);
else
containerNode.appendChild(nodeToInsert);
} else {
// Children of start comments must always have a parent and at least one following sibling (the end comment)
containerNode.parentNode.insertBefore(nodeToInsert, insertAfterNode.nextSibling);
}
},
firstChild: function(node) {
if (!isStartComment(node))
return node.firstChild;
if (!node.nextSibling || isEndComment(node.nextSibling))
return null;
return node.nextSibling;
},
nextSibling: function(node) {
if (isStartComment(node))
node = getMatchingEndComment(node);
if (node.nextSibling && isEndComment(node.nextSibling))
return null;
return node.nextSibling;
},
virtualNodeBindingValue: function(node) {
var regexMatch = isStartComment(node);
return regexMatch ? regexMatch[1] : null;
},
normaliseVirtualElementDomStructure: function(elementVerified) {
// Workaround for https://github.com/SteveSanderson/knockout/issues/155
// (IE <= 8 or IE 9 quirks mode parses your HTML weirdly, treating closing </li> tags as if they don't exist, thereby moving comment nodes
// that are direct descendants of <ul> into the preceding <li>)
if (!htmlTagsWithOptionallyClosingChildren[ko.utils.tagNameLower(elementVerified)])
return;
// Scan immediate children to see if they contain unbalanced comment tags. If they do, those comment tags
// must be intended to appear *after* that child, so move them there.
var childNode = elementVerified.firstChild;
if (childNode) {
do {
if (childNode.nodeType === 1) {
var unbalancedTags = getUnbalancedChildTags(childNode);
if (unbalancedTags) {
// Fix up the DOM by moving the unbalanced tags to where they most likely were intended to be placed - *after* the child
var nodeToInsertBefore = childNode.nextSibling;
for (var i = 0; i < unbalancedTags.length; i++) {
if (nodeToInsertBefore)
elementVerified.insertBefore(unbalancedTags[i], nodeToInsertBefore);
else
elementVerified.appendChild(unbalancedTags[i]);
}
}
}
} while (childNode = childNode.nextSibling);
}
}
};
})();
ko.exportSymbol('virtualElements', ko.virtualElements);
ko.exportSymbol('virtualElements.allowedBindings', ko.virtualElements.allowedBindings);
ko.exportSymbol('virtualElements.emptyNode', ko.virtualElements.emptyNode);
//ko.exportSymbol('virtualElements.firstChild', ko.virtualElements.firstChild); // firstChild is not minified
ko.exportSymbol('virtualElements.insertAfter', ko.virtualElements.insertAfter);
//ko.exportSymbol('virtualElements.nextSibling', ko.virtualElements.nextSibling); // nextSibling is not minified
ko.exportSymbol('virtualElements.prepend', ko.virtualElements.prepend);
ko.exportSymbol('virtualElements.setDomNodeChildren', ko.virtualElements.setDomNodeChildren);
(function() {
var defaultBindingAttributeName = "data-bind";
ko.bindingProvider = function() {
this.bindingCache = {};
};
ko.utils.extend(ko.bindingProvider.prototype, {
'nodeHasBindings': function(node) {
switch (node.nodeType) {
case 1: return node.getAttribute(defaultBindingAttributeName) != null; // Element
case 8: return ko.virtualElements.virtualNodeBindingValue(node) != null; // Comment node
default: return false;
}
},
'getBindings': function(node, bindingContext) {
var bindingsString = this['getBindingsString'](node, bindingContext);
return bindingsString ? this['parseBindingsString'](bindingsString, bindingContext, node) : null;
},
// The following function is only used internally by this default provider.
// It's not part of the interface definition for a general binding provider.
'getBindingsString': function(node, bindingContext) {
switch (node.nodeType) {
case 1: return node.getAttribute(defaultBindingAttributeName); // Element
case 8: return ko.virtualElements.virtualNodeBindingValue(node); // Comment node
default: return null;
}
},
// The following function is only used internally by this default provider.
// It's not part of the interface definition for a general binding provider.
'parseBindingsString': function(bindingsString, bindingContext, node) {
try {
var bindingFunction = createBindingsStringEvaluatorViaCache(bindingsString, this.bindingCache);
return bindingFunction(bindingContext, node);
} catch (ex) {
ex.message = "Unable to parse bindings.\nBindings value: " + bindingsString + "\nMessage: " + ex.message;
throw ex;
}
}
});
ko.bindingProvider['instance'] = new ko.bindingProvider();
function createBindingsStringEvaluatorViaCache(bindingsString, cache) {
var cacheKey = bindingsString;
return cache[cacheKey]
|| (cache[cacheKey] = createBindingsStringEvaluator(bindingsString));
}
function createBindingsStringEvaluator(bindingsString) {
// Build the source for a function that evaluates "expression"
// For each scope variable, add an extra level of "with" nesting
// Example result: with(sc1) { with(sc0) { return (expression) } }
var rewrittenBindings = ko.expressionRewriting.preProcessBindings(bindingsString),
functionBody = "with($context){with($data||{}){return{" + rewrittenBindings + "}}}";
return new Function("$context", "$element", functionBody);
}
})();
ko.exportSymbol('bindingProvider', ko.bindingProvider);
(function () {
ko.bindingHandlers = {};
ko.bindingContext = function(dataItem, parentBindingContext, dataItemAlias) {
if (parentBindingContext) {
ko.utils.extend(this, parentBindingContext); // Inherit $root and any custom properties
this['$parentContext'] = parentBindingContext;
this['$parent'] = parentBindingContext['$data'];
this['$parents'] = (parentBindingContext['$parents'] || []).slice(0);
this['$parents'].unshift(this['$parent']);
} else {
this['$parents'] = [];
this['$root'] = dataItem;
// Export 'ko' in the binding context so it will be available in bindings and templates
// even if 'ko' isn't exported as a global, such as when using an AMD loader.
// See https://github.com/SteveSanderson/knockout/issues/490
this['ko'] = ko;
}
this['$data'] = dataItem;
if (dataItemAlias)
this[dataItemAlias] = dataItem;
}
ko.bindingContext.prototype['createChildContext'] = function (dataItem, dataItemAlias) {
return new ko.bindingContext(dataItem, this, dataItemAlias);
};
ko.bindingContext.prototype['extend'] = function(properties) {
var clone = ko.utils.extend(new ko.bindingContext(), this);
return ko.utils.extend(clone, properties);
};
function validateThatBindingIsAllowedForVirtualElements(bindingName) {
var validator = ko.virtualElements.allowedBindings[bindingName];
if (!validator)
throw new Error("The binding '" + bindingName + "' cannot be used with virtual elements")
}
function applyBindingsToDescendantsInternal (viewModel, elementOrVirtualElement, bindingContextsMayDifferFromDomParentElement) {
var currentChild, nextInQueue = ko.virtualElements.firstChild(elementOrVirtualElement);
while (currentChild = nextInQueue) {
// Keep a record of the next child *before* applying bindings, in case the binding removes the current child from its position
nextInQueue = ko.virtualElements.nextSibling(currentChild);
applyBindingsToNodeAndDescendantsInternal(viewModel, currentChild, bindingContextsMayDifferFromDomParentElement);
}
}
function applyBindingsToNodeAndDescendantsInternal (viewModel, nodeVerified, bindingContextMayDifferFromDomParentElement) {
var shouldBindDescendants = true;
// Perf optimisation: Apply bindings only if...
// (1) We need to store the binding context on this node (because it may differ from the DOM parent node's binding context)
// Note that we can't store binding contexts on non-elements (e.g., text nodes), as IE doesn't allow expando properties for those
// (2) It might have bindings (e.g., it has a data-bind attribute, or it's a marker for a containerless template)
var isElement = (nodeVerified.nodeType === 1);
if (isElement) // Workaround IE <= 8 HTML parsing weirdness
ko.virtualElements.normaliseVirtualElementDomStructure(nodeVerified);
var shouldApplyBindings = (isElement && bindingContextMayDifferFromDomParentElement) // Case (1)
|| ko.bindingProvider['instance']['nodeHasBindings'](nodeVerified); // Case (2)
if (shouldApplyBindings)
shouldBindDescendants = applyBindingsToNodeInternal(nodeVerified, null, viewModel, bindingContextMayDifferFromDomParentElement).shouldBindDescendants;
if (shouldBindDescendants) {
// We're recursing automatically into (real or virtual) child nodes without changing binding contexts. So,
// * For children of a *real* element, the binding context is certainly the same as on their DOM .parentNode,
// hence bindingContextsMayDifferFromDomParentElement is false
// * For children of a *virtual* element, we can't be sure. Evaluating .parentNode on those children may
// skip over any number of intermediate virtual elements, any of which might define a custom binding context,
// hence bindingContextsMayDifferFromDomParentElement is true
applyBindingsToDescendantsInternal(viewModel, nodeVerified, /* bindingContextsMayDifferFromDomParentElement: */ !isElement);
}
}
var boundElementDomDataKey = '__ko_boundElement';
function applyBindingsToNodeInternal (node, bindings, viewModelOrBindingContext, bindingContextMayDifferFromDomParentElement) {
// Need to be sure that inits are only run once, and updates never run until all the inits have been run
var initPhase = 0; // 0 = before all inits, 1 = during inits, 2 = after all inits
// Each time the dependentObservable is evaluated (after data changes),
// the binding attribute is reparsed so that it can pick out the correct
// model properties in the context of the changed data.
// DOM event callbacks need to be able to access this changed data,
// so we need a single parsedBindings variable (shared by all callbacks
// associated with this node's bindings) that all the closures can access.
var parsedBindings;
function makeValueAccessor(bindingKey) {
return function () { return parsedBindings[bindingKey] }
}
function parsedBindingsAccessor() {
return parsedBindings;
}
var bindingHandlerThatControlsDescendantBindings;
// Prevent multiple applyBindings calls for the same node, except when a binding value is specified
var alreadyBound = ko.utils.domData.get(node, boundElementDomDataKey);
if (!bindings) {
if (alreadyBound) {
// prevent issue with #users
//throw Error("You cannot apply bindings multiple times to the same element.");
}
ko.utils.domData.set(node, boundElementDomDataKey, true);
}
ko.dependentObservable(
function () {
// Ensure we have a nonnull binding context to work with
var bindingContextInstance = viewModelOrBindingContext && (viewModelOrBindingContext instanceof ko.bindingContext)
? viewModelOrBindingContext
: new ko.bindingContext(ko.utils.unwrapObservable(viewModelOrBindingContext));
var viewModel = bindingContextInstance['$data'];
// Optimization: Don't store the binding context on this node if it's definitely the same as on node.parentNode, because
// we can easily recover it just by scanning up the node's ancestors in the DOM
// (note: here, parent node means "real DOM parent" not "virtual parent", as there's no O(1) way to find the virtual parent)
if (!alreadyBound && bindingContextMayDifferFromDomParentElement)
ko.storedBindingContextForNode(node, bindingContextInstance);
// Use evaluatedBindings if given, otherwise fall back on asking the bindings provider to give us some bindings
var evaluatedBindings = (typeof bindings == "function") ? bindings(bindingContextInstance, node) : bindings;
parsedBindings = evaluatedBindings || ko.bindingProvider['instance']['getBindings'](node, bindingContextInstance);
if (parsedBindings) {
// First run all the inits, so bindings can register for notification on changes
if (initPhase === 0) {
initPhase = 1;
ko.utils.objectForEach(parsedBindings, function(bindingKey) {
var binding = ko.bindingHandlers[bindingKey];
if (binding && node.nodeType === 8)
validateThatBindingIsAllowedForVirtualElements(bindingKey);
if (binding && typeof binding["init"] == "function") {
var handlerInitFn = binding["init"];
var initResult = handlerInitFn(node, makeValueAccessor(bindingKey), parsedBindingsAccessor, viewModel, bindingContextInstance);
// If this binding handler claims to control descendant bindings, make a note of this
if (initResult && initResult['controlsDescendantBindings']) {
if (bindingHandlerThatControlsDescendantBindings !== undefined)
throw new Error("Multiple bindings (" + bindingHandlerThatControlsDescendantBindings + " and " + bindingKey + ") are trying to control descendant bindings of the same element. You cannot use these bindings together on the same element.");
bindingHandlerThatControlsDescendantBindings = bindingKey;
}
}
});
initPhase = 2;
}
// ... then run all the updates, which might trigger changes even on the first evaluation
if (initPhase === 2) {
ko.utils.objectForEach(parsedBindings, function(bindingKey) {
var binding = ko.bindingHandlers[bindingKey];
if (binding && typeof binding["update"] == "function") {
var handlerUpdateFn = binding["update"];
handlerUpdateFn(node, makeValueAccessor(bindingKey), parsedBindingsAccessor, viewModel, bindingContextInstance);
}
});
}
}
},
null,
{ disposeWhenNodeIsRemoved : node }
);
return {
shouldBindDescendants: bindingHandlerThatControlsDescendantBindings === undefined
};
};
var storedBindingContextDomDataKey = "__ko_bindingContext__";
ko.storedBindingContextForNode = function (node, bindingContext) {
if (arguments.length == 2)
ko.utils.domData.set(node, storedBindingContextDomDataKey, bindingContext);
else
return ko.utils.domData.get(node, storedBindingContextDomDataKey);
}
ko.applyBindingsToNode = function (node, bindings, viewModel) {
if (node.nodeType === 1) // If it's an element, workaround IE <= 8 HTML parsing weirdness
ko.virtualElements.normaliseVirtualElementDomStructure(node);
return applyBindingsToNodeInternal(node, bindings, viewModel, true);
};
ko.applyBindingsToDescendants = function(viewModel, rootNode) {
if (rootNode.nodeType === 1 || rootNode.nodeType === 8)
applyBindingsToDescendantsInternal(viewModel, rootNode, true);
};
ko.applyBindings = function (viewModel, rootNode) {
if (rootNode && (rootNode.nodeType !== 1) && (rootNode.nodeType !== 8))
throw new Error("ko.applyBindings: first parameter should be your view model; second parameter should be a DOM node");
rootNode = rootNode || window.document.body; // Make "rootNode" parameter optional
applyBindingsToNodeAndDescendantsInternal(viewModel, rootNode, true);
};
// Retrieving binding context from arbitrary nodes
ko.contextFor = function(node) {
// We can only do something meaningful for elements and comment nodes (in particular, not text nodes, as IE can't store domdata for them)
switch (node.nodeType) {
case 1:
case 8:
var context = ko.storedBindingContextForNode(node);
if (context) return context;
if (node.parentNode) return ko.contextFor(node.parentNode);
break;
}
return undefined;
};
ko.dataFor = function(node) {
var context = ko.contextFor(node);
return context ? context['$data'] : undefined;
};
ko.exportSymbol('bindingHandlers', ko.bindingHandlers);
ko.exportSymbol('applyBindings', ko.applyBindings);
ko.exportSymbol('applyBindingsToDescendants', ko.applyBindingsToDescendants);
ko.exportSymbol('applyBindingsToNode', ko.applyBindingsToNode);
ko.exportSymbol('contextFor', ko.contextFor);
ko.exportSymbol('dataFor', ko.dataFor);
})();
var attrHtmlToJavascriptMap = { 'class': 'className', 'for': 'htmlFor' };
ko.bindingHandlers['attr'] = {
'update': function(element, valueAccessor, allBindingsAccessor) {
var value = ko.utils.unwrapObservable(valueAccessor()) || {};
ko.utils.objectForEach(value, function(attrName, attrValue) {
attrValue = ko.utils.unwrapObservable(attrValue);
// To cover cases like "attr: { checked:someProp }", we want to remove the attribute entirely
// when someProp is a "no value"-like value (strictly null, false, or undefined)
// (because the absence of the "checked" attr is how to mark an element as not checked, etc.)
var toRemove = (attrValue === false) || (attrValue === null) || (attrValue === undefined);
if (toRemove)
element.removeAttribute(attrName);
// In IE <= 7 and IE8 Quirks Mode, you have to use the Javascript property name instead of the
// HTML attribute name for certain attributes. IE8 Standards Mode supports the correct behavior,
// but instead of figuring out the mode, we'll just set the attribute through the Javascript
// property for IE <= 8.
if (ko.utils.ieVersion <= 8 && attrName in attrHtmlToJavascriptMap) {
attrName = attrHtmlToJavascriptMap[attrName];
if (toRemove)
element.removeAttribute(attrName);
else
element[attrName] = attrValue;
} else if (!toRemove) {
element.setAttribute(attrName, attrValue.toString());
}
// Treat "name" specially - although you can think of it as an attribute, it also needs
// special handling on older versions of IE (https://github.com/SteveSanderson/knockout/pull/333)
// Deliberately being case-sensitive here because XHTML would regard "Name" as a different thing
// entirely, and there's no strong reason to allow for such casing in HTML.
if (attrName === "name") {
ko.utils.setElementName(element, toRemove ? "" : attrValue.toString());
}
});
}
};
ko.bindingHandlers['checked'] = {
'init': function (element, valueAccessor, allBindingsAccessor) {
var updateHandler = function() {
var valueToWrite;
if (element.type == "checkbox") {
valueToWrite = element.checked;
} else if ((element.type == "radio") && (element.checked)) {
valueToWrite = element.value;
} else {
return; // "checked" binding only responds to checkboxes and selected radio buttons
}
var modelValue = valueAccessor(), unwrappedValue = ko.utils.unwrapObservable(modelValue);
if ((element.type == "checkbox") && (unwrappedValue instanceof Array)) {
// For checkboxes bound to an array, we add/remove the checkbox value to that array
// This works for both observable and non-observable arrays
ko.utils.addOrRemoveItem(modelValue, element.value, element.checked);
} else {
ko.expressionRewriting.writeValueToProperty(modelValue, allBindingsAccessor, 'checked', valueToWrite, true);
}
};
ko.utils.registerEventHandler(element, "click", updateHandler);
// IE 6 won't allow radio buttons to be selected unless they have a name
if ((element.type == "radio") && !element.name)
ko.bindingHandlers['uniqueName']['init'](element, function() { return true });
},
'update': function (element, valueAccessor) {
var value = ko.utils.unwrapObservable(valueAccessor());
if (element.type == "checkbox") {
if (value instanceof Array) {
// When bound to an array, the checkbox being checked represents its value being present in that array
element.checked = ko.utils.arrayIndexOf(value, element.value) >= 0;
} else {
// When bound to any other value (not an array), the checkbox being checked represents the value being trueish
element.checked = value;
}
} else if (element.type == "radio") {
element.checked = (element.value == value);
}
}
};
var classesWrittenByBindingKey = '__ko__cssValue';
ko.bindingHandlers['css'] = {
'update': function (element, valueAccessor) {
var value = ko.utils.unwrapObservable(valueAccessor());
if (typeof value == "object") {
ko.utils.objectForEach(value, function(className, shouldHaveClass) {
shouldHaveClass = ko.utils.unwrapObservable(shouldHaveClass);
ko.utils.toggleDomNodeCssClass(element, className, shouldHaveClass);
});
} else {
value = String(value || ''); // Make sure we don't try to store or set a non-string value
ko.utils.toggleDomNodeCssClass(element, element[classesWrittenByBindingKey], false);
element[classesWrittenByBindingKey] = value;
ko.utils.toggleDomNodeCssClass(element, value, true);
}
}
};
ko.bindingHandlers['enable'] = {
'update': function (element, valueAccessor) {
var value = ko.utils.unwrapObservable(valueAccessor());
if (value && element.disabled)
element.removeAttribute("disabled");
else if ((!value) && (!element.disabled))
element.disabled = true;
}
};
ko.bindingHandlers['disable'] = {
'update': function (element, valueAccessor) {
ko.bindingHandlers['enable']['update'](element, function() { return !ko.utils.unwrapObservable(valueAccessor()) });
}
};
// For certain common events (currently just 'click'), allow a simplified data-binding syntax
// e.g. click:handler instead of the usual full-length event:{click:handler}
function makeEventHandlerShortcut(eventName) {
ko.bindingHandlers[eventName] = {
'init': function(element, valueAccessor, allBindingsAccessor, viewModel) {
var newValueAccessor = function () {
var result = {};
result[eventName] = valueAccessor();
return result;
};
return ko.bindingHandlers['event']['init'].call(this, element, newValueAccessor, allBindingsAccessor, viewModel);
}
}
}
ko.bindingHandlers['event'] = {
'init' : function (element, valueAccessor, allBindingsAccessor, viewModel) {
var eventsToHandle = valueAccessor() || {};
ko.utils.objectForEach(eventsToHandle, function(eventName) {
if (typeof eventName == "string") {
ko.utils.registerEventHandler(element, eventName, function (event) {
var handlerReturnValue;
var handlerFunction = valueAccessor()[eventName];
if (!handlerFunction)
return;
var allBindings = allBindingsAccessor();
try {
// Take all the event args, and prefix with the viewmodel
var argsForHandler = ko.utils.makeArray(arguments);
argsForHandler.unshift(viewModel);
handlerReturnValue = handlerFunction.apply(viewModel, argsForHandler);
} finally {
if (handlerReturnValue !== true) { // Normally we want to prevent default action. Developer can override this be explicitly returning true.
if (event.preventDefault)
event.preventDefault();
else
event.returnValue = false;
}
}
var bubble = allBindings[eventName + 'Bubble'] !== false;
if (!bubble) {
event.cancelBubble = true;
if (event.stopPropagation)
event.stopPropagation();
}
});
}
});
}
};
// "foreach: someExpression" is equivalent to "template: { foreach: someExpression }"
// "foreach: { data: someExpression, afterAdd: myfn }" is equivalent to "template: { foreach: someExpression, afterAdd: myfn }"
ko.bindingHandlers['foreach'] = {
makeTemplateValueAccessor: function(valueAccessor) {
return function() {
var modelValue = valueAccessor(),
unwrappedValue = ko.utils.peekObservable(modelValue); // Unwrap without setting a dependency here
// If unwrappedValue is the array, pass in the wrapped value on its own
// The value will be unwrapped and tracked within the template binding
// (See https://github.com/SteveSanderson/knockout/issues/523)
if ((!unwrappedValue) || typeof unwrappedValue.length == "number")
return { 'foreach': modelValue, 'templateEngine': ko.nativeTemplateEngine.instance };
// If unwrappedValue.data is the array, preserve all relevant options and unwrap again value so we get updates
ko.utils.unwrapObservable(modelValue);
return {
'foreach': unwrappedValue['data'],
'as': unwrappedValue['as'],
'includeDestroyed': unwrappedValue['includeDestroyed'],
'afterAdd': unwrappedValue['afterAdd'],
'beforeRemove': unwrappedValue['beforeRemove'],
'afterRender': unwrappedValue['afterRender'],
'beforeMove': unwrappedValue['beforeMove'],
'afterMove': unwrappedValue['afterMove'],
'templateEngine': ko.nativeTemplateEngine.instance
};
};
},
'init': function(element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {
return ko.bindingHandlers['template']['init'](element, ko.bindingHandlers['foreach'].makeTemplateValueAccessor(valueAccessor));
},
'update': function(element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {
return ko.bindingHandlers['template']['update'](element, ko.bindingHandlers['foreach'].makeTemplateValueAccessor(valueAccessor), allBindingsAccessor, viewModel, bindingContext);
}
};
ko.expressionRewriting.bindingRewriteValidators['foreach'] = false; // Can't rewrite control flow bindings
ko.virtualElements.allowedBindings['foreach'] = true;
var hasfocusUpdatingProperty = '__ko_hasfocusUpdating';
var hasfocusLastValue = '__ko_hasfocusLastValue';
ko.bindingHandlers['hasfocus'] = {
'init': function(element, valueAccessor, allBindingsAccessor) {
var handleElementFocusChange = function(isFocused) {
// Where possible, ignore which event was raised and determine focus state using activeElement,
// as this avoids phantom focus/blur events raised when changing tabs in modern browsers.
// However, not all KO-targeted browsers (Firefox 2) support activeElement. For those browsers,
// prevent a loss of focus when changing tabs/windows by setting a flag that prevents hasfocus
// from calling 'blur()' on the element when it loses focus.
// Discussion at https://github.com/SteveSanderson/knockout/pull/352
element[hasfocusUpdatingProperty] = true;
var ownerDoc = element.ownerDocument;
if ("activeElement" in ownerDoc) {
var active;
try {
active = ownerDoc.activeElement;
} catch(e) {
// IE9 throws if you access activeElement during page load (see issue #703)
active = ownerDoc.body;
}
isFocused = (active === element);
}
var modelValue = valueAccessor();
ko.expressionRewriting.writeValueToProperty(modelValue, allBindingsAccessor, 'hasfocus', isFocused, true);
//cache the latest value, so we can avoid unnecessarily calling focus/blur in the update function
element[hasfocusLastValue] = isFocused;
element[hasfocusUpdatingProperty] = false;
};
var handleElementFocusIn = handleElementFocusChange.bind(null, true);
var handleElementFocusOut = handleElementFocusChange.bind(null, false);
ko.utils.registerEventHandler(element, "focus", handleElementFocusIn);
ko.utils.registerEventHandler(element, "focusin", handleElementFocusIn); // For IE
ko.utils.registerEventHandler(element, "blur", handleElementFocusOut);
ko.utils.registerEventHandler(element, "focusout", handleElementFocusOut); // For IE
},
'update': function(element, valueAccessor) {
var value = !!ko.utils.unwrapObservable(valueAccessor()); //force boolean to compare with last value
if (!element[hasfocusUpdatingProperty] && element[hasfocusLastValue] !== value) {
value ? element.focus() : element.blur();
ko.dependencyDetection.ignore(ko.utils.triggerEvent, null, [element, value ? "focusin" : "focusout"]); // For IE, which doesn't reliably fire "focus" or "blur" events synchronously
}
}
};
ko.bindingHandlers['hasFocus'] = ko.bindingHandlers['hasfocus']; // Make "hasFocus" an alias
ko.bindingHandlers['html'] = {
'init': function() {
// Prevent binding on the dynamically-injected HTML (as developers are unlikely to expect that, and it has security implications)
return { 'controlsDescendantBindings': true };
},
'update': function (element, valueAccessor) {
// setHtml will unwrap the value if needed
ko.utils.setHtml(element, valueAccessor());
}
};
var withIfDomDataKey = '__ko_withIfBindingData';
// Makes a binding like with or if
function makeWithIfBinding(bindingKey, isWith, isNot, makeContextCallback) {
ko.bindingHandlers[bindingKey] = {
'init': function(element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {
ko.utils.domData.set(element, withIfDomDataKey, {});
return { 'controlsDescendantBindings': true };
},
'update': function(element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {
var withIfData = ko.utils.domData.get(element, withIfDomDataKey),
dataValue = ko.utils.unwrapObservable(valueAccessor()),
shouldDisplay = !isNot !== !dataValue, // equivalent to isNot ? !dataValue : !!dataValue
isFirstRender = !withIfData.savedNodes,
needsRefresh = isFirstRender || isWith || (shouldDisplay !== withIfData.didDisplayOnLastUpdate);
if (needsRefresh) {
if (isFirstRender) {
withIfData.savedNodes = ko.utils.cloneNodes(ko.virtualElements.childNodes(element), true /* shouldCleanNodes */);
}
if (shouldDisplay) {
if (!isFirstRender) {
ko.virtualElements.setDomNodeChildren(element, ko.utils.cloneNodes(withIfData.savedNodes));
}
ko.applyBindingsToDescendants(makeContextCallback ? makeContextCallback(bindingContext, dataValue) : bindingContext, element);
} else {
ko.virtualElements.emptyNode(element);
}
withIfData.didDisplayOnLastUpdate = shouldDisplay;
}
}
};
ko.expressionRewriting.bindingRewriteValidators[bindingKey] = false; // Can't rewrite control flow bindings
ko.virtualElements.allowedBindings[bindingKey] = true;
}
// Construct the actual binding handlers
makeWithIfBinding('if');
makeWithIfBinding('ifnot', false /* isWith */, true /* isNot */);
makeWithIfBinding('with', true /* isWith */, false /* isNot */,
function(bindingContext, dataValue) {
return bindingContext['createChildContext'](dataValue);
}
);
function ensureDropdownSelectionIsConsistentWithModelValue(element, modelValue, preferModelValue) {
if (preferModelValue) {
if (modelValue !== ko.selectExtensions.readValue(element))
ko.selectExtensions.writeValue(element, modelValue);
}
// No matter which direction we're syncing in, we want the end result to be equality between dropdown value and model value.
// If they aren't equal, either we prefer the dropdown value, or the model value couldn't be represented, so either way,
// change the model value to match the dropdown.
if (modelValue !== ko.selectExtensions.readValue(element))
ko.dependencyDetection.ignore(ko.utils.triggerEvent, null, [element, "change"]);
};
ko.bindingHandlers['options'] = {
'init': function(element) {
if (ko.utils.tagNameLower(element) !== "select")
throw new Error("options binding applies only to SELECT elements");
// Remove all existing <option>s.
while (element.length > 0) {
element.remove(0);
}
// Ensures that the binding processor doesn't try to bind the options
return { 'controlsDescendantBindings': true };
},
'update': function (element, valueAccessor, allBindingsAccessor) {
var selectWasPreviouslyEmpty = element.length == 0;
var previousScrollTop = (!selectWasPreviouslyEmpty && element.multiple) ? element.scrollTop : null;
var unwrappedArray = ko.utils.unwrapObservable(valueAccessor());
var allBindings = allBindingsAccessor();
var includeDestroyed = allBindings['optionsIncludeDestroyed'];
var captionPlaceholder = {};
var captionValue;
var previousSelectedValues;
if (element.multiple) {
previousSelectedValues = ko.utils.arrayMap(element.selectedOptions || ko.utils.arrayFilter(element.childNodes, function (node) {
return node.tagName && (ko.utils.tagNameLower(node) === "option") && node.selected;
}), function (node) {
return ko.selectExtensions.readValue(node);
});
} else if (element.selectedIndex >= 0) {
previousSelectedValues = [ ko.selectExtensions.readValue(element.options[element.selectedIndex]) ];
}
if (unwrappedArray) {
if (typeof unwrappedArray.length == "undefined") // Coerce single value into array
unwrappedArray = [unwrappedArray];
// Filter out any entries marked as destroyed
var filteredArray = ko.utils.arrayFilter(unwrappedArray, function(item) {
return includeDestroyed || item === undefined || item === null || !ko.utils.unwrapObservable(item['_destroy']);
});
// If caption is included, add it to the array
if ('optionsCaption' in allBindings) {
captionValue = ko.utils.unwrapObservable(allBindings['optionsCaption']);
// If caption value is null or undefined, don't show a caption
if (captionValue !== null && captionValue !== undefined) {
filteredArray.unshift(captionPlaceholder);
}
}
} else {
// If a falsy value is provided (e.g. null), we'll simply empty the select element
unwrappedArray = [];
}
function applyToObject(object, predicate, defaultValue) {
var predicateType = typeof predicate;
if (predicateType == "function") // Given a function; run it against the data value
return predicate(object);
else if (predicateType == "string") // Given a string; treat it as a property name on the data value
return object[predicate];
else // Given no optionsText arg; use the data value itself
return defaultValue;
}
// The following functions can run at two different times:
// The first is when the whole array is being updated directly from this binding handler.
// The second is when an observable value for a specific array entry is updated.
// oldOptions will be empty in the first case, but will be filled with the previously generated option in the second.
function optionForArrayItem(arrayEntry, index, oldOptions) {
if (oldOptions.length) {
previousSelectedValues = oldOptions[0].selected && [ ko.selectExtensions.readValue(oldOptions[0]) ];
}
var option = document.createElement("option");
if (arrayEntry === captionPlaceholder) {
ko.utils.setHtml(option, captionValue);
ko.selectExtensions.writeValue(option, undefined);
} else {
// Apply a value to the option element
var optionValue = applyToObject(arrayEntry, allBindings['optionsValue'], arrayEntry);
ko.selectExtensions.writeValue(option, ko.utils.unwrapObservable(optionValue));
// Apply some text to the option element
var optionText = applyToObject(arrayEntry, allBindings['optionsText'], optionValue);
ko.utils.setTextContent(option, optionText);
}
return [option];
}
function setSelectionCallback(arrayEntry, newOptions) {
// IE6 doesn't like us to assign selection to OPTION nodes before they're added to the document.
// That's why we first added them without selection. Now it's time to set the selection.
if (previousSelectedValues) {
var isSelected = ko.utils.arrayIndexOf(previousSelectedValues, ko.selectExtensions.readValue(newOptions[0])) >= 0;
ko.utils.setOptionNodeSelectionState(newOptions[0], isSelected);
}
}
var callback = setSelectionCallback;
if (allBindings['optionsAfterRender']) {
callback = function(arrayEntry, newOptions) {
setSelectionCallback(arrayEntry, newOptions);
ko.dependencyDetection.ignore(allBindings['optionsAfterRender'], null, [newOptions[0], arrayEntry !== captionPlaceholder ? arrayEntry : undefined]);
}
}
ko.utils.setDomNodeChildrenFromArrayMapping(element, filteredArray, optionForArrayItem, null, callback);
// Clear previousSelectedValues so that future updates to individual objects don't get stale data
previousSelectedValues = null;
if (selectWasPreviouslyEmpty && ('value' in allBindings)) {
// Ensure consistency between model value and selected option.
// If the dropdown is being populated for the first time here (or was otherwise previously empty),
// the dropdown selection state is meaningless, so we preserve the model value.
ensureDropdownSelectionIsConsistentWithModelValue(element, ko.utils.peekObservable(allBindings['value']), /* preferModelValue */ true);
}
// Workaround for IE bug
ko.utils.ensureSelectElementIsRenderedCorrectly(element);
if (previousScrollTop && Math.abs(previousScrollTop - element.scrollTop) > 20)
element.scrollTop = previousScrollTop;
}
};
ko.bindingHandlers['options'].optionValueDomDataKey = '__ko.optionValueDomData__';
ko.bindingHandlers['selectedOptions'] = {
'init': function (element, valueAccessor, allBindingsAccessor) {
ko.utils.registerEventHandler(element, "change", function () {
var value = valueAccessor(), valueToWrite = [];
ko.utils.arrayForEach(element.getElementsByTagName("option"), function(node) {
if (node.selected)
valueToWrite.push(ko.selectExtensions.readValue(node));
});
ko.expressionRewriting.writeValueToProperty(value, allBindingsAccessor, 'selectedOptions', valueToWrite);
});
},
'update': function (element, valueAccessor) {
if (ko.utils.tagNameLower(element) != "select")
throw new Error("values binding applies only to SELECT elements");
var newValue = ko.utils.unwrapObservable(valueAccessor());
if (newValue && typeof newValue.length == "number") {
ko.utils.arrayForEach(element.getElementsByTagName("option"), function(node) {
var isSelected = ko.utils.arrayIndexOf(newValue, ko.selectExtensions.readValue(node)) >= 0;
ko.utils.setOptionNodeSelectionState(node, isSelected);
});
}
}
};
ko.bindingHandlers['style'] = {
'update': function (element, valueAccessor) {
var value = ko.utils.unwrapObservable(valueAccessor() || {});
ko.utils.objectForEach(value, function(styleName, styleValue) {
styleValue = ko.utils.unwrapObservable(styleValue);
element.style[styleName] = styleValue || ""; // Empty string removes the value, whereas null/undefined have no effect
});
}
};
ko.bindingHandlers['submit'] = {
'init': function (element, valueAccessor, allBindingsAccessor, viewModel) {
if (typeof valueAccessor() != "function")
throw new Error("The value for a submit binding must be a function");
ko.utils.registerEventHandler(element, "submit", function (event) {
var handlerReturnValue;
var value = valueAccessor();
try { handlerReturnValue = value.call(viewModel, element); }
finally {
if (handlerReturnValue !== true) { // Normally we want to prevent default action. Developer can override this be explicitly returning true.
if (event.preventDefault)
event.preventDefault();
else
event.returnValue = false;
}
}
});
}
};
ko.bindingHandlers['text'] = {
'update': function (element, valueAccessor) {
ko.utils.setTextContent(element, valueAccessor());
}
};
ko.virtualElements.allowedBindings['text'] = true;
ko.bindingHandlers['uniqueName'] = {
'init': function (element, valueAccessor) {
if (valueAccessor()) {
var name = "ko_unique_" + (++ko.bindingHandlers['uniqueName'].currentIndex);
ko.utils.setElementName(element, name);
}
}
};
ko.bindingHandlers['uniqueName'].currentIndex = 0;
ko.bindingHandlers['value'] = {
'init': function (element, valueAccessor, allBindingsAccessor) {
// Always catch "change" event; possibly other events too if asked
var eventsToCatch = ["change"];
var requestedEventsToCatch = allBindingsAccessor()["valueUpdate"];
var propertyChangedFired = false;
if (requestedEventsToCatch) {
if (typeof requestedEventsToCatch == "string") // Allow both individual event names, and arrays of event names
requestedEventsToCatch = [requestedEventsToCatch];
ko.utils.arrayPushAll(eventsToCatch, requestedEventsToCatch);
eventsToCatch = ko.utils.arrayGetDistinctValues(eventsToCatch);
}
var valueUpdateHandler = function() {
propertyChangedFired = false;
var modelValue = valueAccessor();
var elementValue = ko.selectExtensions.readValue(element);
ko.expressionRewriting.writeValueToProperty(modelValue, allBindingsAccessor, 'value', elementValue);
}
// Workaround for https://github.com/SteveSanderson/knockout/issues/122
// IE doesn't fire "change" events on textboxes if the user selects a value from its autocomplete list
var ieAutoCompleteHackNeeded = ko.utils.ieVersion && element.tagName.toLowerCase() == "input" && element.type == "text"
&& element.autocomplete != "off" && (!element.form || element.form.autocomplete != "off");
if (ieAutoCompleteHackNeeded && ko.utils.arrayIndexOf(eventsToCatch, "propertychange") == -1) {
ko.utils.registerEventHandler(element, "propertychange", function () { propertyChangedFired = true });
ko.utils.registerEventHandler(element, "blur", function() {
if (propertyChangedFired) {
valueUpdateHandler();
}
});
}
ko.utils.arrayForEach(eventsToCatch, function(eventName) {
// The syntax "after<eventname>" means "run the handler asynchronously after the event"
// This is useful, for example, to catch "keydown" events after the browser has updated the control
// (otherwise, ko.selectExtensions.readValue(this) will receive the control's value *before* the key event)
var handler = valueUpdateHandler;
if (ko.utils.stringStartsWith(eventName, "after")) {
handler = function() { setTimeout(valueUpdateHandler, 0) };
eventName = eventName.substring("after".length);
}
ko.utils.registerEventHandler(element, eventName, handler);
});
},
'update': function (element, valueAccessor) {
var valueIsSelectOption = ko.utils.tagNameLower(element) === "select";
var newValue = ko.utils.unwrapObservable(valueAccessor());
var elementValue = ko.selectExtensions.readValue(element);
var valueHasChanged = (newValue !== elementValue);
if (valueHasChanged) {
var applyValueAction = function () { ko.selectExtensions.writeValue(element, newValue); };
applyValueAction();
// Workaround for IE6 bug: It won't reliably apply values to SELECT nodes during the same execution thread
// right after you've changed the set of OPTION nodes on it. So for that node type, we'll schedule a second thread
// to apply the value as well.
var alsoApplyAsynchronously = valueIsSelectOption;
if (alsoApplyAsynchronously)
setTimeout(applyValueAction, 0);
}
// If you try to set a model value that can't be represented in an already-populated dropdown, reject that change,
// because you're not allowed to have a model value that disagrees with a visible UI selection.
if (valueIsSelectOption && (element.length > 0))
ensureDropdownSelectionIsConsistentWithModelValue(element, newValue, /* preferModelValue */ false);
}
};
ko.bindingHandlers['visible'] = {
'update': function (element, valueAccessor) {
var value = ko.utils.unwrapObservable(valueAccessor());
var isCurrentlyVisible = !(element.style.display == "none");
if (value && !isCurrentlyVisible)
element.style.display = "";
else if ((!value) && isCurrentlyVisible)
element.style.display = "none";
}
};
// 'click' is just a shorthand for the usual full-length event:{click:handler}
makeEventHandlerShortcut('click');
// If you want to make a custom template engine,
//
// [1] Inherit from this class (like ko.nativeTemplateEngine does)
// [2] Override 'renderTemplateSource', supplying a function with this signature:
//
// function (templateSource, bindingContext, options) {
// // - templateSource.text() is the text of the template you should render
// // - bindingContext.$data is the data you should pass into the template
// // - you might also want to make bindingContext.$parent, bindingContext.$parents,
// // and bindingContext.$root available in the template too
// // - options gives you access to any other properties set on "data-bind: { template: options }"
// //
// // Return value: an array of DOM nodes
// }
//
// [3] Override 'createJavaScriptEvaluatorBlock', supplying a function with this signature:
//
// function (script) {
// // Return value: Whatever syntax means "Evaluate the JavaScript statement 'script' and output the result"
// // For example, the jquery.tmpl template engine converts 'someScript' to '${ someScript }'
// }
//
// This is only necessary if you want to allow data-bind attributes to reference arbitrary template variables.
// If you don't want to allow that, you can set the property 'allowTemplateRewriting' to false (like ko.nativeTemplateEngine does)
// and then you don't need to override 'createJavaScriptEvaluatorBlock'.
ko.templateEngine = function () { };
ko.templateEngine.prototype['renderTemplateSource'] = function (templateSource, bindingContext, options) {
throw new Error("Override renderTemplateSource");
};
ko.templateEngine.prototype['createJavaScriptEvaluatorBlock'] = function (script) {
throw new Error("Override createJavaScriptEvaluatorBlock");
};
ko.templateEngine.prototype['makeTemplateSource'] = function(template, templateDocument) {
// Named template
if (typeof template == "string") {
templateDocument = templateDocument || document;
var elem = templateDocument.getElementById(template);
if (!elem)
throw new Error("Cannot find template with ID " + template);
return new ko.templateSources.domElement(elem);
} else if ((template.nodeType == 1) || (template.nodeType == 8)) {
// Anonymous template
return new ko.templateSources.anonymousTemplate(template);
} else
throw new Error("Unknown template type: " + template);
};
ko.templateEngine.prototype['renderTemplate'] = function (template, bindingContext, options, templateDocument) {
var templateSource = this['makeTemplateSource'](template, templateDocument);
return this['renderTemplateSource'](templateSource, bindingContext, options);
};
ko.templateEngine.prototype['isTemplateRewritten'] = function (template, templateDocument) {
// Skip rewriting if requested
if (this['allowTemplateRewriting'] === false)
return true;
return this['makeTemplateSource'](template, templateDocument)['data']("isRewritten");
};
ko.templateEngine.prototype['rewriteTemplate'] = function (template, rewriterCallback, templateDocument) {
var templateSource = this['makeTemplateSource'](template, templateDocument);
var rewritten = rewriterCallback(templateSource['text']());
templateSource['text'](rewritten);
templateSource['data']("isRewritten", true);
};
ko.exportSymbol('templateEngine', ko.templateEngine);
ko.templateRewriting = (function () {
var memoizeDataBindingAttributeSyntaxRegex = /(<([a-z]+\d*)(?:\s+(?!data-bind\s*=\s*)[a-z0-9\-]+(?:=(?:\"[^\"]*\"|\'[^\']*\'))?)*\s+)data-bind\s*=\s*(["'])([\s\S]*?)\3/gi;
var memoizeVirtualContainerBindingSyntaxRegex = /<!--\s*ko\b\s*([\s\S]*?)\s*-->/g;
function validateDataBindValuesForRewriting(keyValueArray) {
var allValidators = ko.expressionRewriting.bindingRewriteValidators;
for (var i = 0; i < keyValueArray.length; i++) {
var key = keyValueArray[i]['key'];
if (allValidators.hasOwnProperty(key)) {
var validator = allValidators[key];
if (typeof validator === "function") {
var possibleErrorMessage = validator(keyValueArray[i]['value']);
if (possibleErrorMessage)
throw new Error(possibleErrorMessage);
} else if (!validator) {
throw new Error("This template engine does not support the '" + key + "' binding within its templates");
}
}
}
}
function constructMemoizedTagReplacement(dataBindAttributeValue, tagToRetain, nodeName, templateEngine) {
var dataBindKeyValueArray = ko.expressionRewriting.parseObjectLiteral(dataBindAttributeValue);
validateDataBindValuesForRewriting(dataBindKeyValueArray);
var rewrittenDataBindAttributeValue = ko.expressionRewriting.preProcessBindings(dataBindKeyValueArray);
// For no obvious reason, Opera fails to evaluate rewrittenDataBindAttributeValue unless it's wrapped in an additional
// anonymous function, even though Opera's built-in debugger can evaluate it anyway. No other browser requires this
// extra indirection.
var applyBindingsToNextSiblingScript =
"ko.__tr_ambtns(function($context,$element){return(function(){return{ " + rewrittenDataBindAttributeValue + " } })()},'" + nodeName.toLowerCase() + "')";
return templateEngine['createJavaScriptEvaluatorBlock'](applyBindingsToNextSiblingScript) + tagToRetain;
}
return {
ensureTemplateIsRewritten: function (template, templateEngine, templateDocument) {
if (!templateEngine['isTemplateRewritten'](template, templateDocument))
templateEngine['rewriteTemplate'](template, function (htmlString) {
return ko.templateRewriting.memoizeBindingAttributeSyntax(htmlString, templateEngine);
}, templateDocument);
},
memoizeBindingAttributeSyntax: function (htmlString, templateEngine) {
return htmlString.replace(memoizeDataBindingAttributeSyntaxRegex, function () {
return constructMemoizedTagReplacement(/* dataBindAttributeValue: */ arguments[4], /* tagToRetain: */ arguments[1], /* nodeName: */ arguments[2], templateEngine);
}).replace(memoizeVirtualContainerBindingSyntaxRegex, function() {
return constructMemoizedTagReplacement(/* dataBindAttributeValue: */ arguments[1], /* tagToRetain: */ "<!-- ko -->", /* nodeName: */ "#comment", templateEngine);
});
},
applyMemoizedBindingsToNextSibling: function (bindings, nodeName) {
return ko.memoization.memoize(function (domNode, bindingContext) {
var nodeToBind = domNode.nextSibling;
if (nodeToBind && nodeToBind.nodeName.toLowerCase() === nodeName) {
ko.applyBindingsToNode(nodeToBind, bindings, bindingContext);
}
});
}
}
})();
// Exported only because it has to be referenced by string lookup from within rewritten template
ko.exportSymbol('__tr_ambtns', ko.templateRewriting.applyMemoizedBindingsToNextSibling);
(function() {
// A template source represents a read/write way of accessing a template. This is to eliminate the need for template loading/saving
// logic to be duplicated in every template engine (and means they can all work with anonymous templates, etc.)
//
// Two are provided by default:
// 1. ko.templateSources.domElement - reads/writes the text content of an arbitrary DOM element
// 2. ko.templateSources.anonymousElement - uses ko.utils.domData to read/write text *associated* with the DOM element, but
// without reading/writing the actual element text content, since it will be overwritten
// with the rendered template output.
// You can implement your own template source if you want to fetch/store templates somewhere other than in DOM elements.
// Template sources need to have the following functions:
// text() - returns the template text from your storage location
// text(value) - writes the supplied template text to your storage location
// data(key) - reads values stored using data(key, value) - see below
// data(key, value) - associates "value" with this template and the key "key". Is used to store information like "isRewritten".
//
// Optionally, template sources can also have the following functions:
// nodes() - returns a DOM element containing the nodes of this template, where available
// nodes(value) - writes the given DOM element to your storage location
// If a DOM element is available for a given template source, template engines are encouraged to use it in preference over text()
// for improved speed. However, all templateSources must supply text() even if they don't supply nodes().
//
// Once you've implemented a templateSource, make your template engine use it by subclassing whatever template engine you were
// using and overriding "makeTemplateSource" to return an instance of your custom template source.
ko.templateSources = {};
// ---- ko.templateSources.domElement -----
ko.templateSources.domElement = function(element) {
this.domElement = element;
}
ko.templateSources.domElement.prototype['text'] = function(/* valueToWrite */) {
var tagNameLower = ko.utils.tagNameLower(this.domElement),
elemContentsProperty = tagNameLower === "script" ? "text"
: tagNameLower === "textarea" ? "value"
: "innerHTML";
if (arguments.length == 0) {
return this.domElement[elemContentsProperty];
} else {
var valueToWrite = arguments[0];
if (elemContentsProperty === "innerHTML")
ko.utils.setHtml(this.domElement, valueToWrite);
else
this.domElement[elemContentsProperty] = valueToWrite;
}
};
ko.templateSources.domElement.prototype['data'] = function(key /*, valueToWrite */) {
if (arguments.length === 1) {
return ko.utils.domData.get(this.domElement, "templateSourceData_" + key);
} else {
ko.utils.domData.set(this.domElement, "templateSourceData_" + key, arguments[1]);
}
};
// ---- ko.templateSources.anonymousTemplate -----
// Anonymous templates are normally saved/retrieved as DOM nodes through "nodes".
// For compatibility, you can also read "text"; it will be serialized from the nodes on demand.
// Writing to "text" is still supported, but then the template data will not be available as DOM nodes.
var anonymousTemplatesDomDataKey = "__ko_anon_template__";
ko.templateSources.anonymousTemplate = function(element) {
this.domElement = element;
}
ko.templateSources.anonymousTemplate.prototype = new ko.templateSources.domElement();
ko.templateSources.anonymousTemplate.prototype.constructor = ko.templateSources.anonymousTemplate;
ko.templateSources.anonymousTemplate.prototype['text'] = function(/* valueToWrite */) {
if (arguments.length == 0) {
var templateData = ko.utils.domData.get(this.domElement, anonymousTemplatesDomDataKey) || {};
if (templateData.textData === undefined && templateData.containerData)
templateData.textData = templateData.containerData.innerHTML;
return templateData.textData;
} else {
var valueToWrite = arguments[0];
ko.utils.domData.set(this.domElement, anonymousTemplatesDomDataKey, {textData: valueToWrite});
}
};
ko.templateSources.domElement.prototype['nodes'] = function(/* valueToWrite */) {
if (arguments.length == 0) {
var templateData = ko.utils.domData.get(this.domElement, anonymousTemplatesDomDataKey) || {};
return templateData.containerData;
} else {
var valueToWrite = arguments[0];
ko.utils.domData.set(this.domElement, anonymousTemplatesDomDataKey, {containerData: valueToWrite});
}
};
ko.exportSymbol('templateSources', ko.templateSources);
ko.exportSymbol('templateSources.domElement', ko.templateSources.domElement);
ko.exportSymbol('templateSources.anonymousTemplate', ko.templateSources.anonymousTemplate);
})();
(function () {
var _templateEngine;
ko.setTemplateEngine = function (templateEngine) {
if ((templateEngine != undefined) && !(templateEngine instanceof ko.templateEngine))
throw new Error("templateEngine must inherit from ko.templateEngine");
_templateEngine = templateEngine;
}
function invokeForEachNodeOrCommentInContinuousRange(firstNode, lastNode, action) {
var node, nextInQueue = firstNode, firstOutOfRangeNode = ko.virtualElements.nextSibling(lastNode);
while (nextInQueue && ((node = nextInQueue) !== firstOutOfRangeNode)) {
nextInQueue = ko.virtualElements.nextSibling(node);
if (node.nodeType === 1 || node.nodeType === 8)
action(node);
}
}
function activateBindingsOnContinuousNodeArray(continuousNodeArray, bindingContext) {
// To be used on any nodes that have been rendered by a template and have been inserted into some parent element
// Walks through continuousNodeArray (which *must* be continuous, i.e., an uninterrupted sequence of sibling nodes, because
// the algorithm for walking them relies on this), and for each top-level item in the virtual-element sense,
// (1) Does a regular "applyBindings" to associate bindingContext with this node and to activate any non-memoized bindings
// (2) Unmemoizes any memos in the DOM subtree (e.g., to activate bindings that had been memoized during template rewriting)
if (continuousNodeArray.length) {
var firstNode = continuousNodeArray[0], lastNode = continuousNodeArray[continuousNodeArray.length - 1];
// Need to applyBindings *before* unmemoziation, because unmemoization might introduce extra nodes (that we don't want to re-bind)
// whereas a regular applyBindings won't introduce new memoized nodes
invokeForEachNodeOrCommentInContinuousRange(firstNode, lastNode, function(node) {
ko.applyBindings(bindingContext, node);
});
invokeForEachNodeOrCommentInContinuousRange(firstNode, lastNode, function(node) {
ko.memoization.unmemoizeDomNodeAndDescendants(node, [bindingContext]);
});
}
}
function getFirstNodeFromPossibleArray(nodeOrNodeArray) {
return nodeOrNodeArray.nodeType ? nodeOrNodeArray
: nodeOrNodeArray.length > 0 ? nodeOrNodeArray[0]
: null;
}
function executeTemplate(targetNodeOrNodeArray, renderMode, template, bindingContext, options) {
options = options || {};
var firstTargetNode = targetNodeOrNodeArray && getFirstNodeFromPossibleArray(targetNodeOrNodeArray);
var templateDocument = firstTargetNode && firstTargetNode.ownerDocument;
var templateEngineToUse = (options['templateEngine'] || _templateEngine);
ko.templateRewriting.ensureTemplateIsRewritten(template, templateEngineToUse, templateDocument);
var renderedNodesArray = templateEngineToUse['renderTemplate'](template, bindingContext, options, templateDocument);
// Loosely check result is an array of DOM nodes
if ((typeof renderedNodesArray.length != "number") || (renderedNodesArray.length > 0 && typeof renderedNodesArray[0].nodeType != "number"))
throw new Error("Template engine must return an array of DOM nodes");
var haveAddedNodesToParent = false;
switch (renderMode) {
case "replaceChildren":
ko.virtualElements.setDomNodeChildren(targetNodeOrNodeArray, renderedNodesArray);
haveAddedNodesToParent = true;
break;
case "replaceNode":
ko.utils.replaceDomNodes(targetNodeOrNodeArray, renderedNodesArray);
haveAddedNodesToParent = true;
break;
case "ignoreTargetNode": break;
default:
throw new Error("Unknown renderMode: " + renderMode);
}
if (haveAddedNodesToParent) {
activateBindingsOnContinuousNodeArray(renderedNodesArray, bindingContext);
if (options['afterRender'])
ko.dependencyDetection.ignore(options['afterRender'], null, [renderedNodesArray, bindingContext['$data']]);
}
return renderedNodesArray;
}
ko.renderTemplate = function (template, dataOrBindingContext, options, targetNodeOrNodeArray, renderMode) {
options = options || {};
if ((options['templateEngine'] || _templateEngine) == undefined)
throw new Error("Set a template engine before calling renderTemplate");
renderMode = renderMode || "replaceChildren";
if (targetNodeOrNodeArray) {
var firstTargetNode = getFirstNodeFromPossibleArray(targetNodeOrNodeArray);
var whenToDispose = function () { return (!firstTargetNode) || !ko.utils.domNodeIsAttachedToDocument(firstTargetNode); }; // Passive disposal (on next evaluation)
var activelyDisposeWhenNodeIsRemoved = (firstTargetNode && renderMode == "replaceNode") ? firstTargetNode.parentNode : firstTargetNode;
return ko.dependentObservable( // So the DOM is automatically updated when any dependency changes
function () {
// Ensure we've got a proper binding context to work with
var bindingContext = (dataOrBindingContext && (dataOrBindingContext instanceof ko.bindingContext))
? dataOrBindingContext
: new ko.bindingContext(ko.utils.unwrapObservable(dataOrBindingContext));
// Support selecting template as a function of the data being rendered
var templateName = typeof(template) == 'function' ? template(bindingContext['$data'], bindingContext) : template;
var renderedNodesArray = executeTemplate(targetNodeOrNodeArray, renderMode, templateName, bindingContext, options);
if (renderMode == "replaceNode") {
targetNodeOrNodeArray = renderedNodesArray;
firstTargetNode = getFirstNodeFromPossibleArray(targetNodeOrNodeArray);
}
},
null,
{ disposeWhen: whenToDispose, disposeWhenNodeIsRemoved: activelyDisposeWhenNodeIsRemoved }
);
} else {
// We don't yet have a DOM node to evaluate, so use a memo and render the template later when there is a DOM node
return ko.memoization.memoize(function (domNode) {
ko.renderTemplate(template, dataOrBindingContext, options, domNode, "replaceNode");
});
}
};
ko.renderTemplateForEach = function (template, arrayOrObservableArray, options, targetNode, parentBindingContext) {
// Since setDomNodeChildrenFromArrayMapping always calls executeTemplateForArrayItem and then
// activateBindingsCallback for added items, we can store the binding context in the former to use in the latter.
var arrayItemContext;
// This will be called by setDomNodeChildrenFromArrayMapping to get the nodes to add to targetNode
var executeTemplateForArrayItem = function (arrayValue, index) {
// Support selecting template as a function of the data being rendered
arrayItemContext = parentBindingContext['createChildContext'](ko.utils.unwrapObservable(arrayValue), options['as']);
arrayItemContext['$index'] = index;
var templateName = typeof(template) == 'function' ? template(arrayValue, arrayItemContext) : template;
return executeTemplate(null, "ignoreTargetNode", templateName, arrayItemContext, options);
}
// This will be called whenever setDomNodeChildrenFromArrayMapping has added nodes to targetNode
var activateBindingsCallback = function(arrayValue, addedNodesArray, index) {
activateBindingsOnContinuousNodeArray(addedNodesArray, arrayItemContext);
if (options['afterRender'])
options['afterRender'](addedNodesArray, arrayValue);
};
return ko.dependentObservable(function () {
var unwrappedArray = ko.utils.unwrapObservable(arrayOrObservableArray) || [];
if (typeof unwrappedArray.length == "undefined") // Coerce single value into array
unwrappedArray = [unwrappedArray];
// Filter out any entries marked as destroyed
var filteredArray = ko.utils.arrayFilter(unwrappedArray, function(item) {
return options['includeDestroyed'] || item === undefined || item === null || !ko.utils.unwrapObservable(item['_destroy']);
});
// Call setDomNodeChildrenFromArrayMapping, ignoring any observables unwrapped within (most likely from a callback function).
// If the array items are observables, though, they will be unwrapped in executeTemplateForArrayItem and managed within setDomNodeChildrenFromArrayMapping.
ko.dependencyDetection.ignore(ko.utils.setDomNodeChildrenFromArrayMapping, null, [targetNode, filteredArray, executeTemplateForArrayItem, options, activateBindingsCallback]);
}, null, { disposeWhenNodeIsRemoved: targetNode });
};
var templateComputedDomDataKey = '__ko__templateComputedDomDataKey__';
function disposeOldComputedAndStoreNewOne(element, newComputed) {
var oldComputed = ko.utils.domData.get(element, templateComputedDomDataKey);
if (oldComputed && (typeof(oldComputed.dispose) == 'function'))
oldComputed.dispose();
ko.utils.domData.set(element, templateComputedDomDataKey, (newComputed && newComputed.isActive()) ? newComputed : undefined);
}
ko.bindingHandlers['template'] = {
'init': function(element, valueAccessor) {
// Support anonymous templates
var bindingValue = ko.utils.unwrapObservable(valueAccessor());
if ((typeof bindingValue != "string") && (!bindingValue['name']) && (element.nodeType == 1 || element.nodeType == 8)) {
// It's an anonymous template - store the element contents, then clear the element
var templateNodes = element.nodeType == 1 ? element.childNodes : ko.virtualElements.childNodes(element),
container = ko.utils.moveCleanedNodesToContainerElement(templateNodes); // This also removes the nodes from their current parent
new ko.templateSources.anonymousTemplate(element)['nodes'](container);
}
return { 'controlsDescendantBindings': true };
},
'update': function (element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {
var templateName = ko.utils.unwrapObservable(valueAccessor()),
options = {},
shouldDisplay = true,
dataValue,
templateComputed = null;
if (typeof templateName != "string") {
options = templateName;
templateName = ko.utils.unwrapObservable(options['name']);
// Support "if"/"ifnot" conditions
if ('if' in options)
shouldDisplay = ko.utils.unwrapObservable(options['if']);
if (shouldDisplay && 'ifnot' in options)
shouldDisplay = !ko.utils.unwrapObservable(options['ifnot']);
dataValue = ko.utils.unwrapObservable(options['data']);
}
if ('foreach' in options) {
// Render once for each data point (treating data set as empty if shouldDisplay==false)
var dataArray = (shouldDisplay && options['foreach']) || [];
templateComputed = ko.renderTemplateForEach(templateName || element, dataArray, options, element, bindingContext);
} else if (!shouldDisplay) {
ko.virtualElements.emptyNode(element);
} else {
// Render once for this single data point (or use the viewModel if no data was provided)
var innerBindingContext = ('data' in options) ?
bindingContext['createChildContext'](dataValue, options['as']) : // Given an explitit 'data' value, we create a child binding context for it
bindingContext; // Given no explicit 'data' value, we retain the same binding context
templateComputed = ko.renderTemplate(templateName || element, innerBindingContext, options, element);
}
// It only makes sense to have a single template computed per element (otherwise which one should have its output displayed?)
disposeOldComputedAndStoreNewOne(element, templateComputed);
}
};
// Anonymous templates can't be rewritten. Give a nice error message if you try to do it.
ko.expressionRewriting.bindingRewriteValidators['template'] = function(bindingValue) {
var parsedBindingValue = ko.expressionRewriting.parseObjectLiteral(bindingValue);
if ((parsedBindingValue.length == 1) && parsedBindingValue[0]['unknown'])
return null; // It looks like a string literal, not an object literal, so treat it as a named template (which is allowed for rewriting)
if (ko.expressionRewriting.keyValueArrayContainsKey(parsedBindingValue, "name"))
return null; // Named templates can be rewritten, so return "no error"
return "This template engine does not support anonymous templates nested within its templates";
};
ko.virtualElements.allowedBindings['template'] = true;
})();
ko.exportSymbol('setTemplateEngine', ko.setTemplateEngine);
ko.exportSymbol('renderTemplate', ko.renderTemplate);
ko.utils.compareArrays = (function () {
var statusNotInOld = 'added', statusNotInNew = 'deleted';
// Simple calculation based on Levenshtein distance.
function compareArrays(oldArray, newArray, dontLimitMoves) {
oldArray = oldArray || [];
newArray = newArray || [];
if (oldArray.length <= newArray.length)
return compareSmallArrayToBigArray(oldArray, newArray, statusNotInOld, statusNotInNew, dontLimitMoves);
else
return compareSmallArrayToBigArray(newArray, oldArray, statusNotInNew, statusNotInOld, dontLimitMoves);
}
function compareSmallArrayToBigArray(smlArray, bigArray, statusNotInSml, statusNotInBig, dontLimitMoves) {
var myMin = Math.min,
myMax = Math.max,
editDistanceMatrix = [],
smlIndex, smlIndexMax = smlArray.length,
bigIndex, bigIndexMax = bigArray.length,
compareRange = (bigIndexMax - smlIndexMax) || 1,
maxDistance = smlIndexMax + bigIndexMax + 1,
thisRow, lastRow,
bigIndexMaxForRow, bigIndexMinForRow;
for (smlIndex = 0; smlIndex <= smlIndexMax; smlIndex++) {
lastRow = thisRow;
editDistanceMatrix.push(thisRow = []);
bigIndexMaxForRow = myMin(bigIndexMax, smlIndex + compareRange);
bigIndexMinForRow = myMax(0, smlIndex - 1);
for (bigIndex = bigIndexMinForRow; bigIndex <= bigIndexMaxForRow; bigIndex++) {
if (!bigIndex)
thisRow[bigIndex] = smlIndex + 1;
else if (!smlIndex) // Top row - transform empty array into new array via additions
thisRow[bigIndex] = bigIndex + 1;
else if (smlArray[smlIndex - 1] === bigArray[bigIndex - 1])
thisRow[bigIndex] = lastRow[bigIndex - 1]; // copy value (no edit)
else {
var northDistance = lastRow[bigIndex] || maxDistance; // not in big (deletion)
var westDistance = thisRow[bigIndex - 1] || maxDistance; // not in small (addition)
thisRow[bigIndex] = myMin(northDistance, westDistance) + 1;
}
}
}
var editScript = [], meMinusOne, notInSml = [], notInBig = [];
for (smlIndex = smlIndexMax, bigIndex = bigIndexMax; smlIndex || bigIndex;) {
meMinusOne = editDistanceMatrix[smlIndex][bigIndex] - 1;
if (bigIndex && meMinusOne === editDistanceMatrix[smlIndex][bigIndex-1]) {
notInSml.push(editScript[editScript.length] = { // added
'status': statusNotInSml,
'value': bigArray[--bigIndex],
'index': bigIndex });
} else if (smlIndex && meMinusOne === editDistanceMatrix[smlIndex - 1][bigIndex]) {
notInBig.push(editScript[editScript.length] = { // deleted
'status': statusNotInBig,
'value': smlArray[--smlIndex],
'index': smlIndex });
} else {
editScript.push({
'status': "retained",
'value': bigArray[--bigIndex] });
--smlIndex;
}
}
if (notInSml.length && notInBig.length) {
// Set a limit on the number of consecutive non-matching comparisons; having it a multiple of
// smlIndexMax keeps the time complexity of this algorithm linear.
var limitFailedCompares = smlIndexMax * 10, failedCompares,
a, d, notInSmlItem, notInBigItem;
// Go through the items that have been added and deleted and try to find matches between them.
for (failedCompares = a = 0; (dontLimitMoves || failedCompares < limitFailedCompares) && (notInSmlItem = notInSml[a]); a++) {
for (d = 0; notInBigItem = notInBig[d]; d++) {
if (notInSmlItem['value'] === notInBigItem['value']) {
notInSmlItem['moved'] = notInBigItem['index'];
notInBigItem['moved'] = notInSmlItem['index'];
notInBig.splice(d,1); // This item is marked as moved; so remove it from notInBig list
failedCompares = d = 0; // Reset failed compares count because we're checking for consecutive failures
break;
}
}
failedCompares += d;
}
}
return editScript.reverse();
}
return compareArrays;
})();
ko.exportSymbol('utils.compareArrays', ko.utils.compareArrays);
(function () {
// Objective:
// * Given an input array, a container DOM node, and a function from array elements to arrays of DOM nodes,
// map the array elements to arrays of DOM nodes, concatenate together all these arrays, and use them to populate the container DOM node
// * Next time we're given the same combination of things (with the array possibly having mutated), update the container DOM node
// so that its children is again the concatenation of the mappings of the array elements, but don't re-map any array elements that we
// previously mapped - retain those nodes, and just insert/delete other ones
// "callbackAfterAddingNodes" will be invoked after any "mapping"-generated nodes are inserted into the container node
// You can use this, for example, to activate bindings on those nodes.
function fixUpNodesToBeMovedOrRemoved(contiguousNodeArray) {
// Before moving, deleting, or replacing a set of nodes that were previously outputted by the "map" function, we have to reconcile
// them against what is in the DOM right now. It may be that some of the nodes have already been removed from the document,
// or that new nodes might have been inserted in the middle, for example by a binding. Also, there may previously have been
// leading comment nodes (created by rewritten string-based templates) that have since been removed during binding.
// So, this function translates the old "map" output array into its best guess of what set of current DOM nodes should be removed.
//
// Rules:
// [A] Any leading nodes that aren't in the document any more should be ignored
// These most likely correspond to memoization nodes that were already removed during binding
// See https://github.com/SteveSanderson/knockout/pull/440
// [B] We want to output a contiguous series of nodes that are still in the document. So, ignore any nodes that
// have already been removed, and include any nodes that have been inserted among the previous collection
// Rule [A]
while (contiguousNodeArray.length && !ko.utils.domNodeIsAttachedToDocument(contiguousNodeArray[0]))
contiguousNodeArray.splice(0, 1);
// Rule [B]
if (contiguousNodeArray.length > 1) {
// Build up the actual new contiguous node set
var current = contiguousNodeArray[0], last = contiguousNodeArray[contiguousNodeArray.length - 1], newContiguousSet = [current];
while (current !== last) {
current = current.nextSibling;
if (!current) // Won't happen, except if the developer has manually removed some DOM elements (then we're in an undefined scenario)
return;
newContiguousSet.push(current);
}
// ... then mutate the input array to match this.
// (The following line replaces the contents of contiguousNodeArray with newContiguousSet)
Array.prototype.splice.apply(contiguousNodeArray, [0, contiguousNodeArray.length].concat(newContiguousSet));
}
return contiguousNodeArray;
}
function mapNodeAndRefreshWhenChanged(containerNode, mapping, valueToMap, callbackAfterAddingNodes, index) {
// Map this array value inside a dependentObservable so we re-map when any dependency changes
var mappedNodes = [];
var dependentObservable = ko.dependentObservable(function() {
var newMappedNodes = mapping(valueToMap, index, fixUpNodesToBeMovedOrRemoved(mappedNodes)) || [];
// On subsequent evaluations, just replace the previously-inserted DOM nodes
if (mappedNodes.length > 0) {
ko.utils.replaceDomNodes(mappedNodes, newMappedNodes);
if (callbackAfterAddingNodes)
ko.dependencyDetection.ignore(callbackAfterAddingNodes, null, [valueToMap, newMappedNodes, index]);
}
// Replace the contents of the mappedNodes array, thereby updating the record
// of which nodes would be deleted if valueToMap was itself later removed
mappedNodes.splice(0, mappedNodes.length);
ko.utils.arrayPushAll(mappedNodes, newMappedNodes);
}, null, { disposeWhenNodeIsRemoved: containerNode, disposeWhen: function() { return !ko.utils.anyDomNodeIsAttachedToDocument(mappedNodes); } });
return { mappedNodes : mappedNodes, dependentObservable : (dependentObservable.isActive() ? dependentObservable : undefined) };
}
var lastMappingResultDomDataKey = "setDomNodeChildrenFromArrayMapping_lastMappingResult";
ko.utils.setDomNodeChildrenFromArrayMapping = function (domNode, array, mapping, options, callbackAfterAddingNodes) {
// Compare the provided array against the previous one
array = array || [];
options = options || {};
var isFirstExecution = ko.utils.domData.get(domNode, lastMappingResultDomDataKey) === undefined;
var lastMappingResult = ko.utils.domData.get(domNode, lastMappingResultDomDataKey) || [];
var lastArray = ko.utils.arrayMap(lastMappingResult, function (x) { return x.arrayEntry; });
var editScript = ko.utils.compareArrays(lastArray, array, options['dontLimitMoves']);
// Build the new mapping result
var newMappingResult = [];
var lastMappingResultIndex = 0;
var newMappingResultIndex = 0;
var nodesToDelete = [];
var itemsToProcess = [];
var itemsForBeforeRemoveCallbacks = [];
var itemsForMoveCallbacks = [];
var itemsForAfterAddCallbacks = [];
var mapData;
function itemMovedOrRetained(editScriptIndex, oldPosition) {
mapData = lastMappingResult[oldPosition];
if (newMappingResultIndex !== oldPosition)
itemsForMoveCallbacks[editScriptIndex] = mapData;
// Since updating the index might change the nodes, do so before calling fixUpNodesToBeMovedOrRemoved
mapData.indexObservable(newMappingResultIndex++);
fixUpNodesToBeMovedOrRemoved(mapData.mappedNodes);
newMappingResult.push(mapData);
itemsToProcess.push(mapData);
}
function callCallback(callback, items) {
if (callback) {
for (var i = 0, n = items.length; i < n; i++) {
if (items[i]) {
ko.utils.arrayForEach(items[i].mappedNodes, function(node) {
callback(node, i, items[i].arrayEntry);
});
}
}
}
}
for (var i = 0, editScriptItem, movedIndex; editScriptItem = editScript[i]; i++) {
movedIndex = editScriptItem['moved'];
switch (editScriptItem['status']) {
case "deleted":
if (movedIndex === undefined) {
mapData = lastMappingResult[lastMappingResultIndex];
// Stop tracking changes to the mapping for these nodes
if (mapData.dependentObservable)
mapData.dependentObservable.dispose();
// Queue these nodes for later removal
nodesToDelete.push.apply(nodesToDelete, fixUpNodesToBeMovedOrRemoved(mapData.mappedNodes));
if (options['beforeRemove']) {
itemsForBeforeRemoveCallbacks[i] = mapData;
itemsToProcess.push(mapData);
}
}
lastMappingResultIndex++;
break;
case "retained":
itemMovedOrRetained(i, lastMappingResultIndex++);
break;
case "added":
if (movedIndex !== undefined) {
itemMovedOrRetained(i, movedIndex);
} else {
mapData = { arrayEntry: editScriptItem['value'], indexObservable: ko.observable(newMappingResultIndex++) };
newMappingResult.push(mapData);
itemsToProcess.push(mapData);
if (!isFirstExecution)
itemsForAfterAddCallbacks[i] = mapData;
}
break;
}
}
// Call beforeMove first before any changes have been made to the DOM
callCallback(options['beforeMove'], itemsForMoveCallbacks);
// Next remove nodes for deleted items (or just clean if there's a beforeRemove callback)
ko.utils.arrayForEach(nodesToDelete, options['beforeRemove'] ? ko.cleanNode : ko.removeNode);
// Next add/reorder the remaining items (will include deleted items if there's a beforeRemove callback)
for (var i = 0, nextNode = ko.virtualElements.firstChild(domNode), lastNode, node; mapData = itemsToProcess[i]; i++) {
// Get nodes for newly added items
if (!mapData.mappedNodes)
ko.utils.extend(mapData, mapNodeAndRefreshWhenChanged(domNode, mapping, mapData.arrayEntry, callbackAfterAddingNodes, mapData.indexObservable));
// Put nodes in the right place if they aren't there already
for (var j = 0; node = mapData.mappedNodes[j]; nextNode = node.nextSibling, lastNode = node, j++) {
if (node !== nextNode)
ko.virtualElements.insertAfter(domNode, node, lastNode);
}
// Run the callbacks for newly added nodes (for example, to apply bindings, etc.)
if (!mapData.initialized && callbackAfterAddingNodes) {
callbackAfterAddingNodes(mapData.arrayEntry, mapData.mappedNodes, mapData.indexObservable);
mapData.initialized = true;
}
}
// If there's a beforeRemove callback, call it after reordering.
// Note that we assume that the beforeRemove callback will usually be used to remove the nodes using
// some sort of animation, which is why we first reorder the nodes that will be removed. If the
// callback instead removes the nodes right away, it would be more efficient to skip reordering them.
// Perhaps we'll make that change in the future if this scenario becomes more common.
callCallback(options['beforeRemove'], itemsForBeforeRemoveCallbacks);
// Finally call afterMove and afterAdd callbacks
callCallback(options['afterMove'], itemsForMoveCallbacks);
callCallback(options['afterAdd'], itemsForAfterAddCallbacks);
// Store a copy of the array items we just considered so we can difference it next time
ko.utils.domData.set(domNode, lastMappingResultDomDataKey, newMappingResult);
}
})();
ko.exportSymbol('utils.setDomNodeChildrenFromArrayMapping', ko.utils.setDomNodeChildrenFromArrayMapping);
ko.nativeTemplateEngine = function () {
this['allowTemplateRewriting'] = false;
}
ko.nativeTemplateEngine.prototype = new ko.templateEngine();
ko.nativeTemplateEngine.prototype.constructor = ko.nativeTemplateEngine;
ko.nativeTemplateEngine.prototype['renderTemplateSource'] = function (templateSource, bindingContext, options) {
var useNodesIfAvailable = !(ko.utils.ieVersion < 9), // IE<9 cloneNode doesn't work properly
templateNodesFunc = useNodesIfAvailable ? templateSource['nodes'] : null,
templateNodes = templateNodesFunc ? templateSource['nodes']() : null;
if (templateNodes) {
return ko.utils.makeArray(templateNodes.cloneNode(true).childNodes);
} else {
var templateText = templateSource['text']();
return ko.utils.parseHtmlFragment(templateText);
}
};
ko.nativeTemplateEngine.instance = new ko.nativeTemplateEngine();
ko.setTemplateEngine(ko.nativeTemplateEngine.instance);
ko.exportSymbol('nativeTemplateEngine', ko.nativeTemplateEngine);
(function() {
ko.jqueryTmplTemplateEngine = function () {
// Detect which version of jquery-tmpl you're using. Unfortunately jquery-tmpl
// doesn't expose a version number, so we have to infer it.
// Note that as of Knockout 1.3, we only support jQuery.tmpl 1.0.0pre and later,
// which KO internally refers to as version "2", so older versions are no longer detected.
var jQueryTmplVersion = this.jQueryTmplVersion = (function() {
if ((typeof(jQuery) == "undefined") || !(jQuery['tmpl']))
return 0;
// Since it exposes no official version number, we use our own numbering system. To be updated as jquery-tmpl evolves.
try {
if (jQuery['tmpl']['tag']['tmpl']['open'].toString().indexOf('__') >= 0) {
// Since 1.0.0pre, custom tags should append markup to an array called "__"
return 2; // Final version of jquery.tmpl
}
} catch(ex) { /* Apparently not the version we were looking for */ }
return 1; // Any older version that we don't support
})();
function ensureHasReferencedJQueryTemplates() {
if (jQueryTmplVersion < 2)
throw new Error("Your version of jQuery.tmpl is too old. Please upgrade to jQuery.tmpl 1.0.0pre or later.");
}
function executeTemplate(compiledTemplate, data, jQueryTemplateOptions) {
return jQuery['tmpl'](compiledTemplate, data, jQueryTemplateOptions);
}
this['renderTemplateSource'] = function(templateSource, bindingContext, options) {
options = options || {};
ensureHasReferencedJQueryTemplates();
// Ensure we have stored a precompiled version of this template (don't want to reparse on every render)
var precompiled = templateSource['data']('precompiled');
if (!precompiled) {
var templateText = templateSource['text']() || "";
// Wrap in "with($whatever.koBindingContext) { ... }"
templateText = "{{ko_with $item.koBindingContext}}" + templateText + "{{/ko_with}}";
precompiled = jQuery['template'](null, templateText);
templateSource['data']('precompiled', precompiled);
}
var data = [bindingContext['$data']]; // Prewrap the data in an array to stop jquery.tmpl from trying to unwrap any arrays
var jQueryTemplateOptions = jQuery['extend']({ 'koBindingContext': bindingContext }, options['templateOptions']);
var resultNodes = executeTemplate(precompiled, data, jQueryTemplateOptions);
resultNodes['appendTo'](document.createElement("div")); // Using "appendTo" forces jQuery/jQuery.tmpl to perform necessary cleanup work
jQuery['fragments'] = {}; // Clear jQuery's fragment cache to avoid a memory leak after a large number of template renders
return resultNodes;
};
this['createJavaScriptEvaluatorBlock'] = function(script) {
return "{{ko_code ((function() { return " + script + " })()) }}";
};
this['addTemplate'] = function(templateName, templateMarkup) {
document.write("<script type='text/html' id='" + templateName + "'>" + templateMarkup + "<" + "/script>");
};
if (jQueryTmplVersion > 0) {
jQuery['tmpl']['tag']['ko_code'] = {
open: "__.push($1 || '');"
};
jQuery['tmpl']['tag']['ko_with'] = {
open: "with($1) {",
close: "} "
};
}
};
ko.jqueryTmplTemplateEngine.prototype = new ko.templateEngine();
ko.jqueryTmplTemplateEngine.prototype.constructor = ko.jqueryTmplTemplateEngine;
// Use this one by default *only if jquery.tmpl is referenced*
var jqueryTmplTemplateEngineInstance = new ko.jqueryTmplTemplateEngine();
if (jqueryTmplTemplateEngineInstance.jQueryTmplVersion > 0)
ko.setTemplateEngine(jqueryTmplTemplateEngineInstance);
ko.exportSymbol('jqueryTmplTemplateEngine', ko.jqueryTmplTemplateEngine);
})();
}));
}());
})();
|