Source

wxPython / wx / tools / Editra / src / ed_stc.py

   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
###############################################################################
# Name: ed_stc.py                                                             #
# Purpose: Editra's styled editing buffer                                     #
# Author: Cody Precord <cprecord@editra.org>                                  #
# Copyright: (c) 2008 Cody Precord <staff@editra.org>                         #
# License: wxWindows License                                                  #
###############################################################################

"""
This is the main component of the editor that manages all the information
of the on disk file that it represents in memory. It works with the StyleManager
and SyntaxManager to provide an editing pane that auto detects and configures
itself for type of file that is in buffer to do highlighting and other language
specific options such as commenting code.

@summary: Editra's main text buffer class

"""

__author__ = "Cody Precord <cprecord@editra.org>"
__svnid__ = "$Id: ed_stc.py 70097 2011-12-22 21:36:43Z CJP $"
__revision__ = "$Revision: 70097 $"

#-------------------------------------------------------------------------#
# Imports

import os
import wx, wx.stc

# Local Imports
import ed_event
import ed_glob
from profiler import Profile_Get as _PGET
from syntax import syntax
import util
import ed_basestc
import ed_marker
import ed_msg
import ed_mdlg
import ed_txt
from ed_keyh import KeyHandler, ViKeyHandler
import eclib
import ebmlib
import ed_thread

#-------------------------------------------------------------------------#
# Globals
_ = wx.GetTranslation

# EOL Constants
EDSTC_EOL_CR   = ed_glob.EOL_MODE_CR
EDSTC_EOL_LF   = ed_glob.EOL_MODE_LF
EDSTC_EOL_CRLF = ed_glob.EOL_MODE_CRLF

# Character sets
SPACECHARS = " \t\r\n"
NONSPACE = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_"
OPERATORS = "./\?[]{}<>!@#$%^&*():=-+\"';,"

#-------------------------------------------------------------------------#

def jumpaction(func):
    """Decorator method to notify clients about jump actions"""
    def WrapJump(*args, **kwargs):
        """Wrapper for capturing before/after pos of a jump action"""
        stc = args[0]
        pos = stc.GetCurrentPos()
        line = stc.GetCurrentLine()
        func(*args, **kwargs)
        cpos = stc.GetCurrentPos()
        cline = stc.GetCurrentLine()
        fname = stc.GetFileName()

        mdata = dict(fname=fname,
                     prepos=pos, preline=line,
                     lnum=cline, pos=cpos)
        tlw = stc.GetTopLevelParent()
        ed_msg.PostMessage(ed_msg.EDMSG_UI_STC_POS_JUMPED, mdata, tlw.GetId()) 

    WrapJump.__name__ = func.__name__
    WrapJump.__doc__ = func.__doc__
    return WrapJump


#-------------------------------------------------------------------------#

class EditraStc(ed_basestc.EditraBaseStc):
    """Defines a styled text control for editing text
    @summary: Subclass of wx.stc.StyledTextCtrl and L{ed_style.StyleMgr}.
              Manages the documents display and input.

    """
    def __init__(self, parent, id_,
                 pos=wx.DefaultPosition, size=wx.DefaultSize,
                 style=0, use_dt=True):
        """Initializes a control and sets the default objects for
        Tracking events that occur in the control.
        @param parent: Parent Window
        @param id_: Control ID
        @keyword pos: Control position
        @keyword size: Control size
        @keyword style: Control style bitmask
        @keyword use_dt: whether to use a drop target or not

        """
        super(EditraStc, self).__init__(parent, id_, pos, size, style)

        self.SetModEventMask(wx.stc.STC_PERFORMED_UNDO | \
                             wx.stc.STC_PERFORMED_REDO | \
                             wx.stc.STC_MOD_DELETETEXT | \
                             wx.stc.STC_MOD_INSERTTEXT)

        self.CmdKeyAssign(ord('-'), wx.stc.STC_SCMOD_CTRL, \
                          wx.stc.STC_CMD_ZOOMOUT)
        self.CmdKeyAssign(ord('+'), wx.stc.STC_SCMOD_CTRL | \
                          wx.stc.STC_SCMOD_SHIFT, wx.stc.STC_CMD_ZOOMIN)

        #---- Drop Target ----#
        if use_dt and hasattr(parent, 'OnDrop'):
            self.SetDropTarget(util.DropTargetFT(self, None, parent.OnDrop))

        # Attributes
        self.LOG = wx.GetApp().GetLog()
        self._loading = None
        self.key_handler = KeyHandler(self)
        self._backup_done = True
        self._bktimer = wx.Timer(self)
        self._dwellsent = False

        # Macro Attributes
        self._macro = list()
        self.recording = False

        # Command/Settings Attributes
        self._config = dict(autocomp=_PGET('AUTO_COMP'),
                            autoindent=_PGET('AUTO_INDENT'),
                            brackethl=_PGET('BRACKETHL'),
                            folding=_PGET('CODE_FOLD'),
                            highlight=_PGET('SYNTAX'),
                            autobkup=_PGET('AUTOBACKUP'))

        # Set Default Styles used by all documents
        self.Configure()
        self.UpdateBaseStyles()

        # Other Settings
        self.SetMouseDwellTime(900)
        self.UsePopUp(False)

        #self.Bind(wx.stc.EVT_STC_MACRORECORD, self.OnRecordMacro)
        self.Bind(wx.stc.EVT_STC_MARGINCLICK, self.OnMarginClick)
        self.Bind(wx.stc.EVT_STC_UPDATEUI, self.OnUpdateUI)
        self.Bind(wx.stc.EVT_STC_USERLISTSELECTION, self.OnUserListSel)
        self.Bind(wx.stc.EVT_STC_DWELLSTART, self.OnDwellStart)
        self.Bind(wx.stc.EVT_STC_DWELLEND, self.OnDwellEnd)
        self.Bind(wx.EVT_KEY_DOWN, self.OnKeyDown)
        self.Bind(wx.EVT_CHAR, self.OnChar)
        self.Bind(wx.EVT_KEY_UP, self.OnKeyUp)
        self.Bind(wx.EVT_LEFT_UP, self.OnLeftUp)
        self.Bind(wx.EVT_TIMER, self.OnBackupTimer)

        # Async file load events
        self.Bind(ed_txt.EVT_FILE_LOAD, self.OnLoadProgress)

       #---- End Init ----#

    __name__ = u"EditraTextCtrl"

    #---- Protected Member Functions ----#

    def _BuildMacro(self):
        """Constructs a macro script from items in the macro
        record list.
        @status: in limbo

        """
        if not len(self._macro):
            return

        # Get command mappings
        cmds = list()
        for x in dir(wx.stc):
            if x.startswith('STC_CMD_'):
                cmds.append(x)
        cmdvals = [getattr(wx.stc, x) for x in cmds]
        cmds = [x.replace('STC_CMD_', u'') for x in cmds]

        # Get the commands names used in the macro
        named = list()
        for x in self._macro:
            if x[0] in cmdvals:
                named.append(cmds[cmdvals.index(x[0])])
        code = list()

        stc_dict = wx.stc.StyledTextCtrl.__dict__
        for cmd in named:
            for attr in stc_dict:
                if attr.upper() == cmd:
                    code.append(attr)
                    break

        code_txt = u''
        for fun in code:
            code_txt += "    ctrl.%s()\n" % fun
        code_txt += "    print \"Executed\""    #TEST
        code_txt = "def macro(ctrl):\n" + code_txt
        self.GetParent().NewPage()
        self.GetParent().GetCurrentPage().SetText(code_txt)
        self.GetParent().GetCurrentPage().FindLexer('py')
#         code = compile(code_txt, self.__module__, 'exec')
#         exec code in self.__dict__ # Inject new code into this namespace

    def _MacHandleKey(self, k_code, shift_down, alt_down, ctrl_down, cmd_down):
        """Handler for mac specific actions"""
        if alt_down:
            return False

        if (k_code == wx.WXK_BACK and shift_down) and \
           not (ctrl_down or cmd_down):
            self.DeleteForward()
        elif cmd_down and not ctrl_down:
            line = self.GetCurrentLine()
            if k_code == wx.WXK_RIGHT:
                pos = self.GetLineStartPosition(line)
                txt = self.GetLine(line)
                diff = len(txt.rstrip())
                self.GotoPos(pos + diff)
                if shift_down:
                    self.SetSelection(pos, pos + diff)
            elif k_code == wx.WXK_LEFT:
                cpos = self.GetCurrentPos()
                self.GotoIndentPos(line)
                if shift_down:
                    self.SetSelection(cpos, self.GetCurrentPos())
            else:
                return False
        else:
            return False

        return True

    #---- Public Member Functions ----#

    def AddBookmark(self, line=-1):
        """Add a bookmark and return its handle
        Sends notifications for bookmark added
        @keyword line: if < 0 bookmark will be added to current line

        """
        rval = self.AddMarker(ed_marker.Bookmark(), line)
        mdata = dict(stc=self, added=True, line=line, handle=rval)
        ed_msg.PostMessage(ed_msg.EDMSG_UI_STC_BOOKMARK, mdata)
        return rval

    def RemoveBookmark(self, line):
        """Remove the book mark from the given line
        Sends notifications for bookmark removal.
        @param line: int

        """
        self.RemoveMarker(ed_marker.Bookmark(), line)
        mdata = dict(stc=self, added=False, line=line)
        ed_msg.PostMessage(ed_msg.EDMSG_UI_STC_BOOKMARK, mdata)

    def RemoveAllBookmarks(self):
        """Remove all the bookmarks in the buffer
        Sends notifications for bookmark removal.

        """
        self.RemoveAllMarkers(ed_marker.Bookmark())
        mdata = dict(stc=self, added=False, line=-1)
        ed_msg.PostMessage(ed_msg.EDMSG_UI_STC_BOOKMARK, mdata)

    def PlayMacro(self):
        """Send the list of built up macro messages to the editor
        to be played back.
        @postcondition: the macro of this control has been played back

        """
        self.BeginUndoAction()
        for msg in self._macro:
            if msg[0] == 2170:
                self.AddText(msg[2])
            elif msg[0] == 2001:
                self.AddText(self.GetEOLChar() + u' ' * (msg[1] - 1))
            else:
                self.SendMsg(msg[0], msg[1], msg[2])
        self.EndUndoAction()

    #---- Begin Function Definitions ----#

    def Bookmark(self, action):
        """Handles bookmark actions
        @param action: An event ID that describes what is to be done
        @return: None

        """
        lnum = self.GetCurrentLine()
        mark = -1
        if action == ed_glob.ID_ADD_BM:
            if self.MarkerGet(lnum):
                self.RemoveBookmark(lnum)
            else:
                self.AddBookmark(lnum)
        elif action == ed_glob.ID_DEL_ALL_BM:
            self.RemoveAllBookmarks()
        elif action == ed_glob.ID_NEXT_MARK:
            if self.MarkerGet(lnum):
                lnum += 1
            mark = self.MarkerNext(lnum, 1)
            if mark == -1:
                mark = self.MarkerNext(0, 1)
        elif action == ed_glob.ID_PRE_MARK:
            if self.MarkerGet(lnum):
                lnum -= 1
            mark = self.MarkerPrevious(lnum, 1)
            if mark == -1:
                mark = self.MarkerPrevious(self.GetLineCount(), 1)

        if mark != -1:
            self.GotoLine(mark)

    # TODO: DO NOT use these methods anywhere new they will be removed soon
    def ShowCommandBar(self):
        """Open the command bar"""
        self.GetTopLevelParent().GetEditPane().ShowCommandControl(ed_glob.ID_COMMAND)

    def ShowFindBar(self):
        """Open the quick-find bar"""
        self.GetTopLevelParent().GetEditPane().ShowCommandControl(ed_glob.ID_QUICK_FIND)
    # END TODO

    def GetBookmarks(self):
        """Gets a list of all lines containing bookmarks
        @return: list of line numbers

        """
        MarkIsSet = ed_marker.Bookmark.IsSet
        return [line for line in range(self.GetLineCount())
                if MarkIsSet(self, line)]

    def DoBraceHighlight(self):
        """Perform a brace matching highlight
        @note: intended for internal use only
        """
        brace_at_caret, brace_opposite = self.GetBracePair()
        # CallAfter necessary to reduce CG warnings on Mac
        if brace_at_caret != -1  and brace_opposite == -1:
            wx.CallAfter(self.BraceBadLight, brace_at_caret)
        else:
            wx.CallAfter(self.BraceHighlight, brace_at_caret, brace_opposite)

    def GetBracePair(self, pos=-1):
        """Get a tuple of the positions in the buffer where the brace at the
        current caret position and its match are. if a brace doesn't have a
        match it will return -1 for the missing brace.
        @keyword pos: -1 to use current cursor pos, else use to specify brace pos
        @return: tuple (brace_at_caret, brace_opposite)

        """
        brace_at_caret = -1
        brace_opposite = -1
        char_before = None
        if pos < 0:
            # use current position
            caret_pos = self.GetCurrentPos()
        else:
            caret_pos = pos

        if caret_pos > 0:
            char_before = self.GetCharAt(caret_pos - 1)

        # check before
        if char_before and unichr(char_before) in "[]{}()<>":
            brace_at_caret = caret_pos - 1

        # check after
        if brace_at_caret < 0:
            char_after = self.GetCharAt(caret_pos)
            if char_after and chr(char_after) in "[]{}()<>":
                brace_at_caret = caret_pos

        if brace_at_caret >= 0:
            brace_opposite = self.BraceMatch(brace_at_caret)

        return (brace_at_caret, brace_opposite)

    def Configure(self):
        """Configures the editors settings by using profile values
        @postcondition: all profile dependent attributes are configured

        """
#        self.SetControlCharSymbol(172)
        self.SetWrapMode(_PGET('WRAP', 'bool'))
        self.SetViewWhiteSpace(_PGET('SHOW_WS', 'bool'))
        self.SetUseAntiAliasing(_PGET('AALIASING'))
        self.SetUseTabs(_PGET('USETABS'))
        self.SetBackSpaceUnIndents(_PGET('BSUNINDENT'))
        self.SetCaretLineVisible(_PGET('HLCARETLINE'))
        self.SetIndent(_PGET('INDENTWIDTH', 'int'))
        self.SetTabWidth(_PGET('TABWIDTH', 'int'))
#        self.SetTabIndents(True) # Add option for this too?
        self.SetIndentationGuides(_PGET('GUIDES'))
        self.SetEOLMode(_PGET('EOL_MODE'))
        self.SetViewEOL(_PGET('SHOW_EOL'))
        self.SetAutoComplete(_PGET('AUTO_COMP'))
        self.FoldingOnOff(_PGET('CODE_FOLD'))
        self.ToggleAutoIndent(_PGET('AUTO_INDENT'))
        self.ToggleBracketHL(_PGET('BRACKETHL'))
        self.ToggleLineNumbers(_PGET('SHOW_LN'))
        self.SetViEmulationMode(_PGET('VI_EMU'), _PGET('VI_NORMAL_DEFAULT'))
        self.SetViewEdgeGuide(_PGET('SHOW_EDGE'))
        self.EnableAutoBackup(_PGET('AUTOBACKUP'))
        self.SetEndAtLastLine(not _PGET('VIEWVERTSPACE', default=False))

    def ConvertCase(self, upper=False):
        """Converts the case of the selected text to either all lower
        case(default) or all upper case.
        @keyword upper: Flag whether conversion is to upper case or not.

        """
        sel = self.GetSelectedText()
        if upper:
            sel = sel.upper()
        else:
            sel = sel.lower()
        self.ReplaceSelection(sel)

    def EnableAutoBackup(self, enable):
        """Enable automatic backups
        @param enable: bool

        """
        if enable:
            # TODO: make backup interval configurable
            if not self._bktimer.IsRunning():
                self._bktimer.Start(30000) # every 30 seconds
        else:
            if self._bktimer.IsRunning():
                self._bktimer.Stop()

    def InvertCase(self):
        """Invert the case of the selected text
        @postcondition: all text in selection has case inverted

        """
        text = self.GetSelectedText()
        if len(text):
            self.BeginUndoAction()
            self.ReplaceSelection(text.swapcase())
            self.EndUndoAction()

    def GetAutoIndent(self):
        """Returns whether auto-indent is being used
        @return: whether autoindent is active or not
        @rtype: bool

        """
        return self._config['autoindent']

    def GetLineStartPosition(self, line):
        """Get the starting position of the given line
        @param line: int
        @return: int

        """
        if line > 0:
            spos = self.GetLineEndPosition(line-1)
            if self.GetLine(line).endswith("\r\n"):
                spos += 2
            else:
                spos += 1
        else:
            spos = 0
        return spos

    def GetLastVisibleLine(self):
        """Return what the last visible line is
        @return: int

        """
        return self.GetFirstVisibleLine() + self.LinesOnScreen() - 1

    def GetMiddleVisibleLine(self):
        """Return the number of the line that is in the middle of the display
        @return: int

        """
        fline = self.GetFirstVisibleLine()
        if self.LinesOnScreen() < self.GetLineCount():
            mid = (fline + (self.LinesOnScreen() / 2))
        else:
            mid = (fline + (self.GetLineCount() / 2))
        return mid

    def GotoBraceMatch(self):
        """Jump the caret to the brace opposite of the one the caret is
        currently at. If there is no match or the caret currently is not next
        to a brace no action is taken.
        @return: bool

        """
        cbrace, brace_opposite = self.GetBracePair()
        if -1 in (cbrace, brace_opposite):
            return False
        else:
            self.GotoPos(brace_opposite)
            return True

    def GotoColumn(self, column):
        """Move caret to column of current line
        @param column: Column to move to

        """
        cline = self.GetCurrentLineNum()
        lstart = self.PositionFromLine(cline)
        lend = self.GetLineEndPosition(cline)
        linelen = lend - lstart
        if column > linelen:
            column = linelen
        self.GotoPos(lstart + column)

    @jumpaction
    def GotoLine(self, line):
        """Move caret to beginning given line number
        @param line: line to go to (int)

        """
        if line > self.GetLineCount():
            line = self.GetLineCount()
        elif line < 0:
            line = 0
        else:
            pass

        self.SetYCaretPolicy(wx.stc.STC_CARET_STRICT, 0)
        super(EditraStc, self).GotoLine(line)
        self.SetYCaretPolicy(wx.stc.STC_CARET_EVEN, 0)
        self.PostPositionEvent()

    @jumpaction
    def GotoPos(self, pos):
        """Override StyledTextCtrl.GotoPos
        @param pos: position in buffer to move caret to (int)

        """
        super(EditraStc, self).GotoPos(pos)
        self.PostPositionEvent()

    def SetCaretPos(self, pos):
        """Set the caret position without posting jump events
        @param pos: position to go to

        """
        super(EditraStc, self).GotoPos(pos)
        self.PostPositionEvent()

    def GotoIndentPos(self, line=None):
        """Move the caret to the end of the indentation
        on the given line.
        @param line: line to go to

        """
        if line is None:
            line = self.GetCurrentLine()
        self.GotoPos(self.GetLineIndentPosition(line))

    def SetCurrentCol(self, column):
        """Set the current column position on the currently line
        extending the selection.
        @param column: Column to move to

        """
        cline = self.GetCurrentLineNum()
        lstart = self.PositionFromLine(cline)
        lend = self.GetLineEndPosition(cline)
        linelen = lend - lstart
        if column > linelen:
            column = linelen
        self.SetCurrentPos(lstart + column)

    def DeleteForward(self):
        """Delete the selection, or if there is no selection, then
        delete the character to the right of the cursor.

        """
        if self.GetSelectionStart() == self.GetSelectionEnd():
            self.SetCurrentPos(self.GetCurrentPos() + 1)
        self.DeleteBack()

    def EnableKeyProcessor(self, enable=True):
        """Enable specialized key handling
        @keyword enable: bool

        """
        self.key_handler.EnableProcessing(enable)

    def GetAutoComplete(self):
        """Is Autocomplete being used by this instance
        @return: whether autocomp is active or not

        """
        return self._config['autocomp']

    def OnBackupTimer(self, evt):
        """Backup the buffer to a backup file.
        @param evt: wx.TimerEvent

        """
        fname = self.GetFileName()
        # If the file is loading or is over 5MB don't do automatic backups.
        if self.IsLoading() or ebmlib.GetFileSize(fname) > 5242880:
            return

        # If the file is different than the last save point make the backup.
        bkupmgr = ebmlib.FileBackupMgr(None, u"%s.edbkup")
        path = _PGET('AUTOBACKUP_PATH', default=u"")
        if path and os.path.exists(path):
            bkupmgr.SetBackupDirectory(path)

        if not self._backup_done and \
           (not bkupmgr.HasBackup(fname) or bkupmgr.IsBackupNewer(fname)):
            msg = _("File backup performed: %s") % fname
            idval = self.Id
            target = self.TopLevelParent
            def BackupJob(fobj, text):
                writer = bkupmgr.GetBackupWriter(fobj)
                try:
                    writer(text)
                except Exception, msg:
                    return
                nevt = ed_event.StatusEvent(ed_event.edEVT_STATUS, idval,
                                            msg, ed_glob.SB_INFO)
                wx.PostEvent(target, nevt)
            ed_thread.EdThreadPool().QueueJob(BackupJob, self.File, self.GetText())
            self._backup_done = True

    def OnModified(self, evt):
        """Overrides base modified handler"""
        super(EditraStc, self).OnModified(evt)
        if not self.IsLoading():
            self._backup_done = False

    def OnKeyDown(self, evt):
        """Handles keydown events, currently only deals with
        auto indentation.
        @param evt: event that called this handler
        @type evt: wx.KeyEvent

        """
        k_code = evt.GetKeyCode()
        shift_down = evt.ShiftDown()
        alt_down = evt.AltDown()
        ctrl_down = evt.ControlDown()
        cmd_down = evt.CmdDown()

        if self.key_handler.PreProcessKey(k_code, ctrl_down,
                                          cmd_down, shift_down,
                                          alt_down):
            return

        if wx.Platform == '__WXMAC__' and self._MacHandleKey(k_code, shift_down,
                                                             alt_down, ctrl_down,
                                                             cmd_down):
            pass
        elif k_code == wx.WXK_RETURN:
            if self._config['autoindent'] and not self.AutoCompActive():
                if self.GetSelectedText():
                    self.CmdKeyExecute(wx.stc.STC_CMD_NEWLINE)
                else:
                    self.AutoIndent()
            else:
                evt.Skip()

            self.CallTipCancel()

        elif self.VertEdit.Enabled:
            # XXX: handle column mode
            self.VertEdit.OnKeyDown(evt)
        else:
            evt.Skip()

    def OnChar(self, evt):
        """Handles Char events that aren't caught by the
        KEY_DOWN event.
        @param evt: event that called this handler
        @type evt: wx.EVT_CHAR
        @todo: autocomp/calltip lookup can be very cpu intensive it may
               be better to try and process it on a separate thread to
               prevent a slow down in the input of text into the buffer

        """
        key_code = evt.GetKeyCode()
        cpos = self.GetCurrentPos()
        cmpl = self.GetCompleter()
        if self.key_handler.ProcessKey(key_code, evt.ControlDown(),
                                       evt.CmdDown(), evt.ShiftDown(),
                                       evt.AltDown()):
            # The key handler handled this keypress, we don't need to insert
            # the character into the buffer.
            pass

        elif not self._config['autocomp'] or not cmpl.ShouldCheck(cpos):
            evt.Skip()
            return

        elif key_code in cmpl.GetAutoCompKeys():
            self.HidePopups()

            uchr = unichr(key_code)
            command = self.GetCommandStr() + uchr
            self.PutText(uchr)

            if self._config['autocomp']:
                self.ShowAutoCompOpt(command)

        elif key_code in cmpl.GetCallTipKeys():
            self.HidePopups()
            uchr = unichr(key_code)
            command = self.GetCommandStr() + uchr
            self.PutText(uchr)

            if self._config['autocomp']:
                self.ShowCallTip(command)

        elif key_code in cmpl.GetCallTipCancel():
            evt.Skip()
            self.CallTipCancel()
#        elif key_code == wx.WXK_TAB and \
#             True not in (evt.ControlDown(), evt.CmdDown(), 
#                          evt.ShiftDown(), evt.AltDown()):
#            self.Tab() # <- So action can be overridden
        else:
#            print "IS TAB", key_code, wx.WXK_TAB
            evt.Skip()

    def DoAutoComplete(self):
        """Atempt to perform an autocompletion event."""
        self.HidePopups()
        command = self.GetCommandStr()
        self.ShowAutoCompOpt(command)

    def DoCallTip(self):
        """Attempt to show a calltip for the current cursor position"""
        self.HidePopups()
        command = self.GetCommandStr()
        # TODO: GetCommandStr seems to be inadequate under some cases
        self.ShowCallTip(command)

    def OnKeyUp(self, evt):
        """Update status bar of window
        @param evt: wxEVT_KEY_UP

        """
        evt.Skip()
        self.PostPositionEvent()
        tlw = self.GetTopLevelParent()
        ed_msg.PostMessage(ed_msg.EDMSG_UI_STC_KEYUP,
                           (evt.GetPositionTuple(), evt.GetKeyCode()),
                           tlw.GetId())

    def PostPositionEvent(self):
        """Post an event to update the status of the line/column"""
        line, column = self.GetPos()
        pinfo = dict(lnum=line, cnum=column)
        msg = _("Line: %(lnum)d  Column: %(cnum)d") % pinfo
        nevt = ed_event.StatusEvent(ed_event.edEVT_STATUS, self.GetId(),
                                    msg, ed_glob.SB_ROWCOL)
        tlw = self.GetTopLevelParent()
        wx.PostEvent(tlw, nevt)
        ed_msg.PostMessage(ed_msg.EDMSG_UI_STC_POS_CHANGED, pinfo, tlw.GetId())

    def OnRecordMacro(self, evt):
        """Records macro events
        @param evt: event that called this handler
        @type evt: wx.stc.StyledTextEvent

        """
        if self.IsRecording():
            msg = evt.GetMessage()
            if msg == 2170:
                lparm = self.GetTextRange(self.GetCurrentPos()-1, \
                                          self.GetCurrentPos())
            else:
                lparm = evt.GetLParam()
            mac = (msg, evt.GetWParam(), lparm)
            self._macro.append(mac)
#             if mac[0] != 2170:
#                 self._macro.append(mac)
        else:
            evt.Skip()

    def ParaDown(self): # pylint: disable-msg=W0221
        """Move the caret one paragraph down
        @note: overrides the default function to set caret at end
               of paragraph instead of jumping to start of next

        """
        self.WordPartRight()
        super(EditraStc, self).ParaDown()
        if self.GetCurrentPos() != self.GetLength():
            self.WordPartLeft()
            self.GotoPos(self.GetCurrentPos() + len(self.GetEOLChar()))

    def ParaDownExtend(self): # pylint: disable-msg=W0221
        """Extend the selection a paragraph down
        @note: overrides the default function to set selection at end
               of paragraph instead of jumping to start of next so that
               extra blank lines don't get swallowed.

        """
        self.WordRightExtend()
        super(EditraStc, self).ParaDownExtend()
        if self.GetCurrentPos() != self.GetLength():
            self.WordLeftExtend()
            self.SetCurrentPos(self.GetCurrentPos() + len(self.GetEOLChar()))

    @jumpaction
    def OnLeftUp(self, evt):
        """Set primary selection and inform mainwindow that cursor position
        has changed.
        @param evt: wx.MouseEvent()

        """
        evt.Skip()
        # FIXME: there is problems with using the primary selection. Setting
        #        the primary selection causes anything else on the clipboard
        #        to get killed.
#        stxt = self.GetSelectedText()
#        if len(stxt):
#            util.SetClipboardText(stxt, primary=True)
        self.PostPositionEvent()

    def OnLoadProgress(self, evt):
        """Recieves file loading events from asynchronous file loading"""
        pid = self.GetTopLevelParent().GetId()
        if evt.GetState() == ed_txt.FL_STATE_READING:
            if evt.HasText():
                # TODO: get gauge updates working properly
#                sb = self.GetTopLevelParent().GetStatusBar()
#                gauge = sb.GetGauge()
#                gauge.SetValue(evt.GetProgress())
#                gauge.Show()
#                gauge.ProcessPendingEvents()
#                sb.ProcessPendingEvents()
                self.SetReadOnly(False)
                self.AppendText(evt.GetValue())
                self.SetSavePoint()
                self.SetReadOnly(True)
                # wx.GetApp().Yield(True) # Too slow on windows...
        elif evt.GetState() == ed_txt.FL_STATE_END:
            self.SetReadOnly(False)
            ed_msg.PostMessage(ed_msg.EDMSG_PROGRESS_STATE, (pid, 0, 0))
            self.SetSavePoint()
            self.SetUndoCollection(True)
            del self._loading
            self._loading = None
            parent = self.GetParent()
            if hasattr(parent, 'DoPostLoad'):
                parent.DoPostLoad()
        elif evt.GetState() == ed_txt.FL_STATE_START:
            ed_msg.PostMessage(ed_msg.EDMSG_PROGRESS_SHOW, (pid, True))
            ed_msg.PostMessage(ed_msg.EDMSG_PROGRESS_STATE, (pid, 0, self.File.GetSize()))
            self.SetReadOnly(True)
            self.SetUndoCollection(False)
        elif evt.GetState() == ed_txt.FL_STATE_ABORTED:
            self.SetReadOnly(False)
            self.ClearAll()

    def OnUpdateUI(self, evt):
        """Check for matching braces
        @param evt: event that called this handler
        @type evt: wx.stc.StyledTextEvent

        """
        # If disabled just skip the event
        if self._config['brackethl']:
            self.DoBraceHighlight()

        # XXX: handle when column mode is enabled
        if self.VertEdit.Enabled:
            self.VertEdit.OnUpdateUI(evt)
        evt.Skip()

    def OnUserListSel(self, evt):
        """Callback hook for userlist selections"""
        mdata = dict(ltype=evt.GetListType(),
                     text=evt.GetText(),
                     stc=self)
        ed_msg.PostMessage(ed_msg.EDMSG_UI_STC_USERLIST_SEL, mdata,
                           context=self.GetTopLevelParent().GetId())
        evt.Skip()

    def OnDwellStart(self, evt):
        """Callback hook for mouse dwell start"""
        # Workaround issue where this event in incorrectly sent
        # when the mouse has not dwelled within the buffer area
        mpoint = wx.GetMousePosition()
        brect = self.GetScreenRect()
        if not brect.Contains(mpoint) or \
           not self.IsShown() or \
           not self.GetTopLevelParent().IsActive():
            return

        position = evt.Position
        if not self._dwellsent and position >= 0:
            dwellword = self.GetWordFromPosition(position)[0]
            line_num = self.LineFromPosition(position) + 1
            mdata = dict(stc=self, pos=position,
                         line=line_num,
                         word=dwellword)
            ed_msg.PostMessage(ed_msg.EDMSG_UI_STC_DWELL_START, mdata)

            tip = mdata.get('rdata', None)
            if tip:
                self.CallTipShow(position, tip)
            else:
                # Clients did not need to make use of the calltip
                # so check if auto-completion provider has anything to display.
                if not self.IsComment(position) and not self.IsString(position):
                    endpos = self.WordEndPosition(position, True)
                    col = self.GetColumn(endpos)
                    line = self.GetLine(line_num-1)
                    command = self.GetCommandStr(line, col)
                    tip = self._code['compsvc'].GetCallTip(command)
                    if len(tip):
                        tip_pos = position - (len(dwellword.split('.')[-1]) + 1)
                        fail_safe = position - self.GetColumn(position)
                        self.CallTipShow(max(tip_pos, fail_safe), tip)
        evt.Skip()

    def OnDwellEnd(self, evt):
        """Callback hook for mouse dwell end"""
        self._dwellsent = False
        ed_msg.PostMessage(ed_msg.EDMSG_UI_STC_DWELL_END)
        self.CallTipCancel()
        evt.Skip()

    def OnMarginClick(self, evt):
        """Open and Close Folders as Needed
        @param evt: event that called this handler
        @type evt: wx.stc.StyledTextEvent

        """
        margin_num = evt.GetMargin()
        if margin_num == ed_basestc.FOLD_MARGIN:
            if evt.GetShift() and \
               (evt.GetControl() or (wx.Platform == '__WXMAC__' and evt.GetAlt())):
                self.FoldAll()
            else:
                line_clicked = self.LineFromPosition(evt.GetPosition())
                level = self.GetFoldLevel(line_clicked)
                if level & wx.stc.STC_FOLDLEVELHEADERFLAG:

                    # Expand node and all Subnodes
                    if evt.GetShift():
                        self.SetFoldExpanded(line_clicked, True)
                        self.Expand(line_clicked, True, True, 100, level)
                    elif evt.GetControl() or \
                        (wx.Platform == '__WXMAC__' and evt.GetAlt()):
                        # Contract all subnodes of clicked one
                        # Note: using Alt as Ctrl can not be received for
                        # clicks on mac (Scintilla Bug).
                        if self.GetFoldExpanded(line_clicked):
                            self.SetFoldExpanded(line_clicked, False)
                            self.Expand(line_clicked, False, True, 0, level)
                        else:
                            # Expand all subnodes
                            self.SetFoldExpanded(line_clicked, True)
                            self.Expand(line_clicked, True, True, 100, level)
                    else:
                        self.ToggleFold(line_clicked)
        elif margin_num == ed_basestc.MARK_MARGIN:
            # Bookmarks ect...
            line_clicked = self.LineFromPosition(evt.GetPosition())
            # Hook for client code to interact with margin clicks
            data = dict(stc=self, line=line_clicked)
            ed_msg.PostMessage(ed_msg.EDMSG_UI_STC_MARGIN_CLICK, msgdata=data)
            if not data.get('handled', False):
                # Default to internal bookmark handling
                if ed_marker.Bookmark().IsSet(self, line_clicked):
                    self.RemoveBookmark(line_clicked)
                else:
                    self.AddBookmark(line_clicked)

    def FoldAll(self):
        """Fold Tree In or Out
        @postcondition: code tree is folded open or closed

        """
        line_count = self.GetLineCount()
        expanding = True

        # find out if we are folding or unfolding
        for line_num in range(line_count):
            if self.GetFoldLevel(line_num) & wx.stc.STC_FOLDLEVELHEADERFLAG:
                expanding = not self.GetFoldExpanded(line_num)
                break
        line_num = 0

        while line_num < line_count:
            level = self.GetFoldLevel(line_num)

            if level & wx.stc.STC_FOLDLEVELHEADERFLAG and \
               (level & wx.stc.STC_FOLDLEVELNUMBERMASK) == \
               wx.stc.STC_FOLDLEVELBASE:

                if expanding:
                    self.SetFoldExpanded(line_num, True)
                    line_num = self.Expand(line_num, True) - 1
                else:
                    last_child = self.GetLastChild(line_num, -1)
                    self.SetFoldExpanded(line_num, False)

                    if last_child > line_num:
                        self.HideLines(line_num + 1, last_child)
            line_num = line_num + 1

    def Expand(self, line, do_expand, force=False, vis_levels=0, level=-1):
        """Open the Margin Folder
        @postcondition: the selected folder is expanded

        """
        last_child = self.GetLastChild(line, level)
        line = line + 1

        while line <= last_child:
            if force:
                if vis_levels > 0:
                    self.ShowLines(line, line)
                else:
                    self.HideLines(line, line)
            else:
                if do_expand:
                    self.ShowLines(line, line)

            if level == -1:
                level = self.GetFoldLevel(line)

            if level & wx.stc.STC_FOLDLEVELHEADERFLAG:
                if force:
                    self.SetFoldExpanded(line, vis_levels > 1)
                    line = self.Expand(line, do_expand, force, vis_levels - 1)
                else:
                    if do_expand:
                        if self.GetFoldExpanded(line):
                            self.SetFoldExpanded(line, True)
                    line = self.Expand(line, do_expand, force, vis_levels - 1)
            else:
                line = line + 1
        return line

    def ExpandAll(self):
        """Expand all folded code blocks"""
        line_count = self.GetLineCount()
        for line_num in xrange(line_count):
            if self.GetFoldLevel(line_num) & wx.stc.STC_FOLDLEVELHEADERFLAG:
                if not self.GetFoldExpanded(line_num):
                    self.Expand(line_num, True)

    def FindLexer(self, set_ext=u''):
        """Sets Text Controls Lexer Based on File Extension
        @param set_ext: explicit extension to use in search
        @postcondition: lexer is configured for file

        """
        if not self._config['highlight']:
            return 2

        super(EditraStc, self).FindLexer(set_ext)

        # Configure Autocompletion
        # NOTE: must be done after syntax configuration
        if self._config['autocomp']:
            self.ConfigureAutoComp()
        return 0

    def ControlDispatch(self, evt):
        """Dispatches events caught from the mainwindow to the
        proper functions in this module.
        @param evt: event that was posted to this handler

        """
        e_id = evt.GetId()
        e_obj = evt.GetEventObject()
        e_map = { ed_glob.ID_COPY  : self.Copy, ed_glob.ID_CUT  : self.Cut,
                  ed_glob.ID_PASTE : self.Paste, ed_glob.ID_UNDO : self.Undo,
                  ed_glob.ID_REDO  : self.Redo, ed_glob.ID_INDENT : self.Tab,
                  ed_glob.ID_REVERT_FILE : self.RevertToSaved,
                  ed_glob.ID_CUT_LINE : self.LineCut,
                  ed_glob.ID_DELETE_LINE : self.LineDelete,
                  ed_glob.ID_COLUMN_MODE : self.ToggleColumnMode,
                  ed_glob.ID_COPY_LINE : self.LineCopy,
                  ed_glob.ID_DUP_LINE : self.LineDuplicate,
                  ed_glob.ID_BRACKETHL : self.ToggleBracketHL,
                  ed_glob.ID_SYNTAX : self.SyntaxOnOff,
                  ed_glob.ID_UNINDENT : self.BackTab,
                  ed_glob.ID_TRANSPOSE : self.LineTranspose,
                  ed_glob.ID_LINE_MOVE_UP : self.LineMoveUp,
                  ed_glob.ID_LINE_MOVE_DOWN : self.LineMoveDown,
                  ed_glob.ID_SELECTALL: self.SelectAll,
                  ed_glob.ID_FOLDING : self.FoldingOnOff,
                  ed_glob.ID_SHOW_LN : self.ToggleLineNumbers,
                  ed_glob.ID_TOGGLECOMMENT : self.ToggleComment,
                  ed_glob.ID_AUTOINDENT : self.ToggleAutoIndent,
                  ed_glob.ID_LINE_AFTER : self.AddLine,
                  ed_glob.ID_TOGGLE_FOLD : self.ToggleFold,
                  ed_glob.ID_TOGGLE_ALL_FOLDS : self.FoldAll,
                  ed_glob.ID_TRIM_WS : self.TrimWhitespace,
                  ed_glob.ID_MACRO_START : self.StartRecord,
                  ed_glob.ID_MACRO_STOP : self.StopRecord,
                  ed_glob.ID_MACRO_PLAY : self.PlayMacro,
                  ed_glob.ID_GOTO_MBRACE : self.GotoBraceMatch,
                  ed_glob.ID_SHOW_AUTOCOMP : self.DoAutoComplete,
                  ed_glob.ID_SHOW_CALLTIP : self.DoCallTip
        }

        e_idmap = { ed_glob.ID_ZOOM_OUT : self.DoZoom,
                    ed_glob.ID_ZOOM_IN  : self.DoZoom,
                    ed_glob.ID_ZOOM_NORMAL : self.DoZoom,
                    ed_glob.ID_EOL_MAC  : self.ConvertLineMode,
                    ed_glob.ID_EOL_UNIX : self.ConvertLineMode,
                    ed_glob.ID_EOL_WIN  : self.ConvertLineMode,
                    ed_glob.ID_SPACE_TO_TAB : self.ConvertWhitespace,
                    ed_glob.ID_TAB_TO_SPACE : self.ConvertWhitespace,
                    ed_glob.ID_NEXT_MARK : self.Bookmark,
                    ed_glob.ID_PRE_MARK  : self.Bookmark,
                    ed_glob.ID_ADD_BM    : self.Bookmark,
                    ed_glob.ID_DEL_ALL_BM : self.Bookmark}

        # Hide autocomp popups
        self.HidePopups()

        if e_obj.GetClassName() == "wxToolBar" or e_id in e_map:
            if e_id in e_map:
                e_map[e_id]()
            return

        if e_id in e_idmap:
            e_idmap[e_id](e_id)
        elif e_id == ed_glob.ID_SHOW_EDGE:
            self.SetViewEdgeGuide(not self.GetEdgeMode())
        elif e_id == ed_glob.ID_SHOW_EOL:
            self.SetViewEOL(not self.GetViewEOL())
        elif e_id == ed_glob.ID_PASTE_AFTER:
            cpos = self.GetCurrentPos()
            self.Paste()
            self.SetCurrentPos(cpos)
            self.SetSelection(cpos, cpos)
        elif e_id == ed_glob.ID_SHOW_WS:
            self.SetViewWhiteSpace(not self.GetViewWhiteSpace())
        elif e_id == ed_glob.ID_WORD_WRAP:
            self.SetWrapMode(not self.GetWrapMode())
        elif e_id == ed_glob.ID_JOIN_LINES:
            self.LinesJoinSelected()
        elif e_id == ed_glob.ID_INDENT_GUIDES:
            self.SetIndentationGuides(not bool(self.GetIndentationGuides()))
        elif e_id == ed_glob.ID_HLCARET_LINE:
            self.SetCaretLineVisible(not self.GetCaretLineVisible())
        elif e_id in syntax.SYNTAX_IDS:
            f_ext = syntax.GetExtFromId(e_id)
            self.LOG("[ed_stc][evt] Manually Setting Lexer to %s" % str(f_ext))
            self.FindLexer(f_ext)
        elif e_id == ed_glob.ID_AUTOCOMP:
            self.SetAutoComplete(not self.GetAutoComplete())
        elif e_id == ed_glob.ID_LINE_BEFORE:
            self.AddLine(before=True)
        elif e_id in [ed_glob.ID_TO_UPPER, ed_glob.ID_TO_LOWER]:
            self.ConvertCase(e_id == ed_glob.ID_TO_UPPER)
        elif e_id == ed_glob.ID_USE_SOFTTABS:
            self.SetUseTabs(not self.GetUseTabs())
        else:
            evt.Skip()

    def CheckEOL(self):
        """Checks the EOL mode of the opened document. If the mode
        that the document was saved in is different than the editors
        current mode the editor will switch modes to preserve the eol
        type of the file, if the eol chars are mixed then the editor
        will toggle on eol visibility.
        @postcondition: eol mode is configured to best match file
        @todo: Is showing line endings the best way to show mixed?

        """
        mixed = diff = False
        eol_map = {u"\n" : wx.stc.STC_EOL_LF,
                   u"\r\n" : wx.stc.STC_EOL_CRLF,
                   u"\r" : wx.stc.STC_EOL_CR}

        eol = unichr(self.GetCharAt(self.GetLineEndPosition(0)))
        if eol == u"\r":
            tmp = unichr(self.GetCharAt(self.GetLineEndPosition(0) + 1))
            if tmp == u"\n":
                eol += tmp

        # Is the eol used in the document the same as what is currently set.
        if eol != self.GetEOLChar():
            diff = True

        # Check the lines to see if they are all matching or not.
        LEPFunct = self.GetLineEndPosition
        GCAFunct = self.GetCharAt
        for line in range(self.GetLineCount() - 1):
            end = LEPFunct(line)
            tmp = unichr(GCAFunct(end))
            if tmp == u"\r":
                tmp2 = unichr(GCAFunct(LEPFunct(0) + 1))
                if tmp2 == u"\n":
                    tmp += tmp2
            if tmp != eol:
                mixed = True
                break

        if mixed or diff:
            if mixed:
                # Warn about mixed end of line characters and offer to convert
                msg = _("Mixed EOL characters detected.\n\n"
                        "Would you like to format them to all be the same?")
                dlg = ed_mdlg.EdFormatEOLDlg(self.GetTopLevelParent(), msg,
                                             _("Format EOL?"),
                                             eol_map.get(eol, self.GetEOLMode()))

                if dlg.ShowModal() == wx.ID_YES:
                    sel = dlg.GetSelection()
                    self.ConvertEOLs(sel)
                    super(EditraStc, self).SetEOLMode(sel)
                dlg.Destroy()
            else:
                # The end of line character is different from the preferred
                # user setting for end of line. So change our eol mode to
                # preserve that of what the document is using.
                mode = eol_map.get(eol, wx.stc.STC_EOL_LF)
                super(EditraStc, self).SetEOLMode(mode)
        else:
            pass

    def ConvertLineMode(self, mode_id):
        """Converts all line endings in a document to a specified
        format.
        @param mode_id: (menu) id of eol mode to set

        """
        eol_map = { ed_glob.ID_EOL_MAC  : wx.stc.STC_EOL_CR,
                    ed_glob.ID_EOL_UNIX : wx.stc.STC_EOL_LF,
                    ed_glob.ID_EOL_WIN  : wx.stc.STC_EOL_CRLF
                  }
        self.ConvertEOLs(eol_map[mode_id])
        super(EditraStc, self).SetEOLMode(eol_map[mode_id])

    def ConvertWhitespace(self, mode_id):
        """Convert whitespace from using tabs to spaces or visa versa
        @param mode_id: id of conversion mode

        """
        if mode_id not in (ed_glob.ID_TAB_TO_SPACE, ed_glob.ID_SPACE_TO_TAB):
            return
        tabw = self.GetIndent()
        pos = self.GetCurrentPos()
        sel = self.GetSelectedText()
        if mode_id == ed_glob.ID_TAB_TO_SPACE:
            cmd = (u"\t", u" " * tabw)
            tabs = False
        else:
            cmd = (" " * tabw, u"\t")
            tabs = True

        if sel != wx.EmptyString:
            self.ReplaceSelection(sel.replace(cmd[0], cmd[1]))
        else:
            self.BeginUndoAction()
            part1 = self.GetTextRange(0, pos).replace(cmd[0], cmd[1])
            tmptxt = self.GetTextRange(pos, self.GetLength()).replace(cmd[0], \
                                                                      cmd[1])
            self.SetText(part1 + tmptxt)
            self.GotoPos(len(part1))
            self.SetUseTabs(tabs)
            self.EndUndoAction()

    def GetCurrentLineNum(self):
        """Return the number of the line that the caret is currently at
        @return: Line number (int)

        """
        return self.LineFromPosition(self.GetCurrentPos())

    def GetEOLModeId(self):
        """Gets the id of the eol format. Convenience for updating
        menu ui.
        @return: id of the eol mode of this document

        """
        eol_map = { wx.stc.STC_EOL_CR : ed_glob.ID_EOL_MAC,
                    wx.stc.STC_EOL_LF : ed_glob.ID_EOL_UNIX,
                    wx.stc.STC_EOL_CRLF : ed_glob.ID_EOL_WIN
                  }
        return eol_map.get(self.GetEOLMode(), ed_glob.ID_EOL_UNIX)

    def IsBracketHlOn(self):
        """Returns whether bracket highlighting is being used by this
        control or not.
        @return: status of bracket highlight activation

        """
        return self._config['brackethl']

    def IsFoldingOn(self):
        """Returns whether code folding is being used by this
        control or not.
        @return: whether folding is on or not

        """
        return self._config['folding']

    def IsHighlightingOn(self):
        """Returns whether syntax highlighting is being used by this
        control or not.
        @return: whether syntax highlighting is on or not

        """
        return self._config['highlight']

    def IsLoading(self):
        """Is a background thread loading the text into the file
        @return: bool

        """
        # NOTE: keep the getattr check here some cases
        #       are reporting a yet unexplainable AttributeError here
        return getattr(self, '_loading', None) is not None

    def IsRecording(self):
        """Returns whether the control is in the middle of recording
        a macro or not.
        @return: whether recording macro or not

        """
        return self.recording

    def GetSelectionLineStartEnd(self):
        """Get the start and end positions of the lines in the current
        fuzzy selection.
        @return: tuple (int, int)

        """
        sline = self.LineFromPosition(self.GetSelectionStart())
        eline = self.LineFromPosition(self.GetSelectionEnd())
        last_line = self.GetLineCount() - 1
        eol_len = len(self.GetEOLChar())
        if sline < eline:
            tstart = self.GetLineStartPosition(sline)
            tend = self.GetLineEndPosition(eline)
        else:
            tstart = self.GetLineStartPosition(eline)
            tend = self.GetLineEndPosition(sline)

        if eline == last_line and tstart != 0:
            tstart -= eol_len
        else:
            tend += eol_len

        return (max(tstart, 0), min(tend, self.GetLength()))

    def LineCut(self): # pylint: disable-msg=W0221
        """Cut the selected lines into the clipboard"""
        start, end = self.GetSelectionLineStartEnd()
        self.SetSelection(start, end)
        self.BeginUndoAction()
        self.Cut()
        self.EndUndoAction()

    def LineDelete(self): # pylint: disable-msg=W0221
        """Delete the selected lines without modifying the clipboard"""
        start, end = self.GetSelectionLineStartEnd()
        self.SetTargetStart(start)
        self.SetTargetEnd(end)
        self.BeginUndoAction()
        self.ReplaceTarget(u'')
        self.EndUndoAction()

    def LinesJoin(self): # pylint: disable-msg=W0221
        """Join lines in target and compress whitespace
        @note: overrides default function to allow for leading
               whitespace in joined lines to be compressed to 1 space

        """
        sline = self.LineFromPosition(self.GetTargetStart())
        eline = self.LineFromPosition(self.GetTargetEnd())
        if not eline:
            eline = 1
        lines = list()
        for line in xrange(sline, eline + 1):
            if line != sline:
                tmp = self.GetLine(line).strip()
            else:
                tmp = self.GetLine(line)
                if not tmp.isspace():
                    tmp = tmp.rstrip()
                else:
                    tmp = tmp.replace("\n", u'').replace("\r", u'')
            if len(tmp):
                lines.append(tmp)
        self.SetTargetStart(self.PositionFromLine(sline))
        self.SetTargetEnd(self.GetLineEndPosition(eline))
        self.ReplaceTarget(u' '.join(lines))

    def LinesJoinSelected(self):
        """Similar to LinesJoin, but operates on selection
        @see: LinesJoin

        """
        self.SetTargetStart(self.GetSelectionStart())
        self.SetTargetEnd(self.GetSelectionEnd())
        self.LinesJoin()

    def LineMoveUp(self):
        """Move the current line up"""
        linenum = self.GetCurrentLine()
        if linenum > 0 :
            self.BeginUndoAction()
            self.LineTranspose()
            self.LineUp()
            self.EndUndoAction()

    def LineMoveDown(self):
        """Move the current line down"""
        linenum = self.GetCurrentLine()
        col = self.GetColumn(self.GetCurrentPos())
        if linenum < self.GetLineCount() - 1:
            self.BeginUndoAction()
            self.LineDown()
            self.LineTranspose()
            self.GotoColumn(col)
            self.EndUndoAction()

    def LineTranspose(self): # pylint: disable-msg=W0221
        """Switch the current line with the previous one
        @note: overrides base stc method to do transpose in single undo action

        """
        self.BeginUndoAction()
        super(EditraStc, self).LineTranspose()
        self.EndUndoAction()

    def SetAutoComplete(self, value):
        """Turns Autocompletion on and off
        @param value: use autocomp or not
        @type value: bool

        """
        if isinstance(value, bool):
            self._config['autocomp'] = value
            if value:
                self.InitCompleter()

    def SetEOLMode(self, mode):
        """Sets the EOL mode from a string description
        @param mode: eol mode to set
        @note: overrides StyledTextCtrl.SetEOLMode

        """
        mode_map = { EDSTC_EOL_CR   : wx.stc.STC_EOL_CR,
                     EDSTC_EOL_LF   : wx.stc.STC_EOL_LF,
                     EDSTC_EOL_CRLF : wx.stc.STC_EOL_CRLF
                   }

        mode = mode_map.get(mode, wx.stc.STC_EOL_LF)
        super(EditraStc, self).SetEOLMode(mode)

    def SetViEmulationMode(self, use_vi, use_normal=False):
        """Activate/Deactivate Vi emulation mode
        @param use_vi: Turn vi emulation on/off
        @type use_vi: boolean
        @keyword use_normal: Start in normal mode
        @type use_normal: boolean

        """
        self.key_handler.ClearMode()
        if use_vi:
            self.key_handler = ViKeyHandler(self, use_normal)
        else:
            self.key_handler = KeyHandler(self)

    def SetViewEdgeGuide(self, switch=None):
        """Toggles the visibility of the edge guide
        @keyword switch: force a particular setting

        """
        if (switch is None and not self.GetEdgeMode()) or switch:
            self.SetEdgeColumn(_PGET("EDGE", 'int', 80))
            self.SetEdgeMode(wx.stc.STC_EDGE_LINE)
        else:
            self.SetEdgeMode(wx.stc.STC_EDGE_NONE)

    def StartRecord(self): # pylint: disable-msg=W0221
        """Starts recording all events
        @return: None

        """
        self.recording = True
        evt = ed_event.StatusEvent(ed_event.edEVT_STATUS, self.GetId(),
                                   _("Recording Macro") + u"...",
                                   ed_glob.SB_INFO)
        wx.PostEvent(self.GetTopLevelParent(), evt)
        super(EditraStc, self).StartRecord()

    def StopRecord(self): # pylint: disable-msg=W0221
        """Stops the recording and builds the macro script
        @postcondition: macro recording is stopped

        """
        self.recording = False
        super(EditraStc, self).StopRecord()
        evt = ed_event.StatusEvent(ed_event.edEVT_STATUS, self.GetId(),
                                   _("Recording Finished"),
                                   ed_glob.SB_INFO)
        wx.PostEvent(self.GetTopLevelParent(), evt)
        self._BuildMacro()

    def TrimWhitespace(self):
        """Trims trailing whitespace from all lines in the document.
        @postcondition: all trailing whitespace is removed from document

        """
        cpos = self.GetCurrentPos()
        cline = self.GetCurrentLine()
        cline_len = len(self.GetLine(cline))
        epos = cline_len - (self.GetLineEndPosition(cline) - cpos)

        # Begin stripping trailing whitespace
        self.BeginUndoAction()
        for line in xrange(self.GetLineCount()):
            eol = u''
            tmp = self.GetLine(line)

            # Scintilla stores text in utf8 internally so we need to
            # encode to utf8 to get the correct length of the text.
            try:
                tlen = len(tmp.encode('utf-8'))
            except:
                tlen = len(tmp)

            if tlen:
                if "\r\n" in tmp:
                    eol = "\r\n"
                elif "\n" in tmp:
                    eol = "\n"
                else:
                    eol = tmp[-1]

                if not eol.isspace():
                    continue
                elif eol in u' \t':
                    eol = u''
            else:
                continue

            # Strip the extra whitespace from the line
            end = self.GetLineEndPosition(line) + len(eol)
            start = max(end - tlen, 0)
            self.SetTargetStart(start)
            self.SetTargetEnd(end)
            rtxt = tmp.rstrip() + eol
            if rtxt != self.GetTextRange(start, end):
                self.ReplaceTarget(tmp.rstrip() + eol)
        self.EndUndoAction()

        # Restore carat position
        cline_len = len(self.GetLine(cline))
        end = self.GetLineEndPosition(cline)
        if epos >= cline_len:
            epos = end
        else:
            start = max(end - cline_len, 0)
            epos += start

        if epos != cpos:
            self.GotoPos(epos)

    def FoldingOnOff(self, switch=None):
        """Turn code folding on and off
        @keyword switch: force a particular setting

        """
        if (switch is None and not self._config['folding']) or switch:
            self.LOG("[ed_stc][evt] Code Folding Turned On")
            self._config['folding'] = True
            self.SetMarginWidth(ed_basestc.FOLD_MARGIN, 12)
            self.SetProperty("fold", "1")
        else:
            self.LOG("[ed_stc][evt] Code Folding Turned Off")
            self._config['folding'] = False

            # Ensure all code blocks have been expanded
            self.ExpandAll()

            self.SetMarginWidth(ed_basestc.FOLD_MARGIN, 0)
            self.SetProperty("fold", "0")

    def SyntaxOnOff(self, switch=None):
        """Turn Syntax Highlighting on and off
        @keyword switch: force a particular setting

        """
        if (switch is None and not self._config['highlight']) or switch:
            self.LOG("[ed_stc][evt] Syntax Highlighting Turned On")
            self._config['highlight'] = True
            self.FindLexer()
        else:
            self.LOG("[ed_stc][evt] Syntax Highlighting Turned Off")
            self._config['highlight'] = False
            self.SetLexer(wx.stc.STC_LEX_NULL)
            self.ClearDocumentStyle()
            self.UpdateBaseStyles()
        return 0

    def Tab(self): # pylint: disable-msg=W0221
        """Override base method to ensure that folded blocks get unfolded
        prior to changing the indentation.

        """
        # TODO: unfolding of folded blocks during block indent
#        lines = list()
#        if self.HasSelection():
#            sel = self.GetSelection()
#            sline = self.LineFromPosition(sel[0])
#            eline = self.LineFromPosition(sel[1])
#            lines = range(sline, eline+1)
#        else:
#            cline = self.GetCurrentLine()
#            lines = [cline, cline+1]

#        for line_num in lines:
#            if self.GetFoldLevel(line_num) & wx.stc.STC_FOLDLEVELHEADERFLAG:
#                if not self.GetFoldExpanded(line_num):
#                    self.Expand(line_num, True)
        super(EditraStc, self).Tab()

    def ToggleAutoIndent(self, switch=None):
        """Toggles Auto-indent On and Off
        @keyword switch: force a particular setting

        """
        if (switch is None and not self._config['autoindent']) or switch:
            self._config['autoindent'] = True
        else:
            self._config['autoindent'] = False

    def ToggleBracketHL(self, switch=None):
        """Toggle Bracket Highlighting On and Off
        @keyword switch: force a particular setting

        """
        if (switch is None and not self._config['brackethl']) or switch:
            self.LOG("[ed_stc][evt] Bracket Highlighting Turned On")
            self._config['brackethl'] = True
            # Make sure to highlight a brace if next to on when turning it on
            self.DoBraceHighlight()
        else:
            self.LOG("[ed_stc][evt] Bracket Highlighting Turned Off")
            self._config['brackethl'] = False
            # Make sure that if there was a highlighted brace it gets cleared
            wx.CallAfter(self.BraceHighlight, -1, -1)

    def ToggleFold(self, lineNum=None):
        """Toggle the fold at the given line number. If lineNum is
        None then the fold closest cursors current postions.
        @keyword lineNum: int

        """
        if lineNum is None:
            lineNum = self.GetCurrentLine()
        super(EditraStc, self).ToggleFold(lineNum)

    @jumpaction
    def WordLeft(self): # pylint: disable-msg=W0221
        """Move caret to beginning of previous word
        @note: override builtin to include extra characters in word

        """
        self.SetWordChars(NONSPACE)
        super(EditraStc, self).WordLeft()
        cpos = self.GetCurrentPos()
        if self.GetTextRange(cpos, cpos + 1) in SPACECHARS:
            super(EditraStc, self).WordLeft()
        self.SetWordChars('')

    def WordLeftExtend(self): # pylint: disable-msg=W0221
        """Extend selection to beginning of previous word
        @note: override builtin to include extra characters in word

        """
        self.SetWordChars(NONSPACE)
        super(EditraStc, self).WordLeftExtend()
        cpos = self.GetCurrentPos()
        if self.GetTextRange(cpos, cpos + 1) in SPACECHARS:
            super(EditraStc, self).WordLeftExtend()
        self.SetWordChars('')

    @jumpaction
    def WordPartLeft(self): # pylint: disable-msg=W0221
        """Move the caret left to the next change in capitalization/punctuation
        @note: overrides default function to not count whitespace as words

        """
        super(EditraStc, self).WordPartLeft()
        cpos = self.GetCurrentPos()
        if self.GetTextRange(cpos, cpos + 1) in SPACECHARS:
            super(EditraStc, self).WordPartLeft()

    def WordPartLeftExtend(self): # pylint: disable-msg=W0221
        """Extend selection left to the next change in c
        apitalization/punctuation.
        @note: overrides default function to not count whitespace as words

        """
        super(EditraStc, self).WordPartLeftExtend()
        cpos = self.GetCurrentPos()
        if self.GetTextRange(cpos, cpos + 1) in SPACECHARS:
            super(EditraStc, self).WordPartLeftExtend()

    @jumpaction
    def WordPartRight(self): # pylint: disable-msg=W0221
        """Move the caret to the start of the next word part to the right
        @note: overrides default function to exclude white space

        """
        super(EditraStc, self).WordPartRight()
        cpos = self.GetCurrentPos()
        if self.GetTextRange(cpos, cpos + 1) in SPACECHARS:
            super(EditraStc, self).WordPartRight()

    @jumpaction
    def WordPartRightEnd(self): # pylint: disable-msg=W0221
        """Move caret to end of next change in capitalization/punctuation
        @postcondition: caret is moved

        """
        super(EditraStc, self).WordPartRight()
        super(EditraStc, self).WordPartRight()
        cpos = self.GetCurrentPos()
        if self.GetTextRange(cpos, cpos - 1) in SPACECHARS:
            self.CharLeft()

    def WordPartRightEndExtend(self): # pylint: disable-msg=W0221
        """Extend selection to end of next change in capitalization/punctuation
        @postcondition: selection is extended

        """
        super(EditraStc, self).WordPartRightExtend()
        super(EditraStc, self).WordPartRightExtend()
        cpos = self.GetCurrentPos()
        if self.GetTextRange(cpos, cpos - 1) in SPACECHARS:
            self.CharLeftExtend()

    def WordPartRightExtend(self): # pylint: disable-msg=W0221
        """Extend selection to start of next change in 
        capitalization/punctuation
        @postcondition: selection is extended

        """
        super(EditraStc, self).WordPartRightExtend()
        cpos = self.GetCurrentPos()
        if self.GetTextRange(cpos, cpos + 1) in SPACECHARS:
            super(EditraStc, self).WordPartRightExtend()

    @jumpaction
    def WordRight(self): # pylint: disable-msg=W0221
        """Move caret to beginning of next word
        @note: override builtin to include extra characters in word

        """
        self.SetWordChars(NONSPACE)
        super(EditraStc, self).WordRight()
        cpos = self.GetCurrentPos()
        if self.GetTextRange(cpos, cpos + 1) in SPACECHARS:
            super(EditraStc, self).WordRight()
        self.SetWordChars('')

    @jumpaction
    def WordRightEnd(self): # pylint: disable-msg=W0221
        """Move caret to end of next change in word
        @note: override builtin to include extra characters in word

        """
        self.SetWordChars(NONSPACE)
        super(EditraStc, self).WordRightEnd()
        cpos = self.GetCurrentPos()
        if self.GetTextRange(cpos, cpos - 1) in SPACECHARS:
            super(EditraStc, self).WordRightEnd()
        self.SetWordChars('')

    def WordRightExtend(self): # pylint: disable-msg=W0221
        """Extend selection to beginning of next word
        @note: override builtin to include extra characters in word

        """
        self.SetWordChars(NONSPACE)
        super(EditraStc, self).WordRightExtend()
        cpos = self.GetCurrentPos()
        if self.GetTextRange(cpos, cpos + 1) in SPACECHARS:
            super(EditraStc, self).WordRightExtend()
        self.SetWordChars('')

    def LoadFile(self, path):
        """Load the file at the given path into the buffer. Returns
        True if no errors and False otherwise. To retrieve the errors
        check the last error that was set in the file object returned by
        L{GetDocument}.
        @param path: path to file

        """
        fsize = ebmlib.GetFileSize(path)
        if fsize < 1048576: # 1MB
            return super(EditraStc, self).LoadFile(path)
        else:
            ed_msg.PostMessage(ed_msg.EDMSG_FILE_OPENING, path)
            self.file.SetPath(path)
            self._loading = wx.BusyCursor()
            self.file.ReadAsync(self)
            return True

    def ReloadFile(self):
        """Reloads the current file, returns True on success and
        False if there is a failure.
        @return: whether file was reloaded or not
        @rtype: bool

        """
        cfile = self.GetFileName()
        if os.path.exists(cfile):
            try:
                self.BeginUndoAction()
                marks = self.GetBookmarks()
                cpos = self.GetCurrentPos()
                # TODO: Handle async re-loads of large files
                txt = self.File.Read()
                self.SetReadOnly(False)
                if txt is not None:
                    if self.File.IsRawBytes() and not ebmlib.IsUnicode(txt):
                        self.AddStyledText(txt)
                        self.SetReadOnly(True) # Don't allow editing of raw bytes
                    else:
                        self.SetText(txt)
                else:
                    return False, _("Failed to reload: %s") % cfile

                self.SetModTime(ebmlib.GetFileModTime(cfile))
                for mark in marks:
                    self.AddBookmark(mark)
                self.EndUndoAction()
                self.SetSavePoint()
            except (UnicodeDecodeError, AttributeError, OSError, IOError), msg:
                self.LOG("[ed_stc][err] Failed to Reload %s" % cfile)
                return False, msg
            else:
                self.GotoPos(cpos)
                context = self.GetTopLevelParent().GetId()
                ed_msg.PostMessage(ed_msg.EDMSG_FILE_OPENED,
                                   self.GetFileName(), context)
                return True, ''
        else:
            self.LOG("[ed_stc][err] %s does not exists, cant reload." % cfile)
            return False, _("%s does not exist") % cfile

    def RevertFile(self):
        """Revert all the changes made to the file since it was opened
        @postcondition: undo history is re-wound to initial state and file
                        is re-saved if it has an on disk file.

        """
        with eclib.Freezer(self) as _tmp:
            while self.CanUndo():
                self.Undo()

        fname = self.GetFileName()
        if len(fname):
            self.SaveFile(fname)

    def RevertToSaved(self):
        """Revert the current buffer back to the last save point"""
        with eclib.Freezer(self) as _tmp:
            while self.CanUndo():
                if self.GetModify():
                    self.Undo()
                else:
                    break

    def SaveFile(self, path):
        """Save buffers contents to disk
        @param path: path of file to save
        @return: whether file was written or not
        @rtype: bool

        """
        result = True
        try:
            tlw_id = self.GetTopLevelParent().GetId()
            ed_msg.PostMessage(ed_msg.EDMSG_FILE_SAVE,
                               (path, self.GetLangId()), tlw_id)
            self.File.SetPath(path)
            self.LOG("[ed_stc][info] Writing file %s, with encoding %s" % \
                     (path, self.File.GetEncoding()))

            if _PGET('AUTO_TRIM_WS', 'bool', False):
                self.TrimWhitespace()

            if self.File.IsReadOnly():
                wx.MessageBox(_("File is Read Only and cannot be saved"),
                              _("Read Only"),
                              style=wx.OK|wx.CENTER|wx.ICON_WARNING)
                return True
            else:
                if not self.File.IsRawBytes():
                    self.File.Write(self.GetText())
                else:
                    nchars = self.GetTextLength()
                    txt = self.GetStyledText(0, nchars)[0:nchars*2:2]
                    self.File.Write(txt)
        except Exception, msg:
            result = False
            self.LOG("[ed_stc][err] There was an error saving %s" % path)
            self.LOG("[ed_stc][err] ERROR: %s" % str(msg))

        if result:
            self.SetSavePoint()
            self.SetModTime(ebmlib.GetFileModTime(path))
            self.File.FireModified()
            self.SetFileName(path)

        wx.CallAfter(ed_msg.PostMessage,
                     ed_msg.EDMSG_FILE_SAVED,
                     (path, self.GetLangId()),
                     tlw_id)

        return result

    def ConfigureLexer(self, file_ext):
        """Sets Lexer and Lexer Keywords for the specified file extension
        @param file_ext: a file extension to configure the lexer from

        """
        super(EditraStc, self).ConfigureLexer(file_ext)

        if not self._config['folding']:
            self.SetProperty("fold", "0")

        # Notify that lexer has changed
        pid = self.TopLevelParent.Id
        self.LOG("[ed_stc][info] Lexer change notification for context %d" % pid)
        ed_msg.PostMessage(ed_msg.EDMSG_UI_STC_LEXER,
                           (self.GetFileName(), self.GetLangId()), pid)
        return True