summaryrefslogtreecommitdiffstats
path: root/kate/xmltools/plugin_katexmltools.cpp
blob: b3eea59c5d25a4e2fe4b142b8aeea6a20f0bc02e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
/***************************************************************************
  pluginKatexmltools.cpp

  List elements, attributes, attribute values and entities allowed by DTD.
  Needs a DTD in XML format ( as produced by dtdparse ) for most features.

  copyright			: ( C ) 2001-2002 by Daniel Naber
  email				: daniel.naber@t-online.de

  Copyright (C) 2005 by Anders Lund <anders@alweb.dk>
 ***************************************************************************/

/***************************************************************************
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
 as published by the Free Software Foundation; either version 2
 of the License, or ( at your option ) any later version.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with this program; if not, write to the Free Software
 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 ***************************************************************************/

/*
README:
The basic idea is this: certain keyEvents(), namely [<&" ], trigger a completion box.
This is intended as a help for editing. There are some cases where the XML
spec is not followed, e.g. one can add the same attribute twice to an element.
Also see the user documentation. If backspace is pressed after a completion popup
was closed, the popup will re-open. This way typos can be corrected and the popup
will reappear, which is quite comfortable.

FIXME for jowenn if he has time:
-Ctrl-Z doesn't work if completion is visible
-Typing with popup works, but right/left cursor keys and start/end don't, i.e.
 they should be ignored by the completion ( ? )
-popup not completely visible if it's long and appears at the bottom of the screen

FIXME:
-( docbook ) <author lang="">: insert space between the quotes, press "de" and return -> only "d" inserted
-Correctly support more than one view:
 charactersInteractivelyInserted( ..) is tied to kv->document()
 but filterInsertString( .. ) is tied to kv
-The "Insert Element" dialog isn't case insensitive, but it should be
-fix upper/lower case problems ( start typing lowercase if the tag etc. is upper case )
-See the "fixme"'s in the code

TODO:
-check for mem leaks
-add "Go to opening/tqparent tag"?
-check doctype to get top-level element
-can undo behaviour be improved?, e.g. the plugins internal deletions of text
 don't have to be an extra step
-don't offer entities if inside tag but outside attribute value

-Support for more than one namespace at the same time ( e.g. XSLT + XSL-FO )?
=>This could also be handled in the XSLT DTD fragment, as described in the XSLT 1.0 spec,
 but then at <xsl:template match="/"><html> it will only show you HTML elements!
=>So better "Assign meta DTD" and "Add meta DTD", the latter will expand the current meta DTD
-Option to insert empty element in <empty/> form
-Show expanded entities with TQChar::TQChar( int rc ) + tqunicode font
-Don't ignore entities defined in the document's prologue
-Only offer 'valid' elements, i.e. don't take the elements as a set but check
 if the DTD is matched ( order, number of occurences, ... )

-Maybe only read the meta DTD file once, then store the resulting TQMap on disk ( using TQDataStream )?
 We'll then have to compare timeOf_cacheFile <-> timeOf_metaDtd.
-Try to use libxml
*/

#include "plugin_katexmltools.h"
#include "plugin_katexmltools.moc"

#include <assert.h>

#include <tqdatetime.h>
#include <tqdom.h>
#include <tqfile.h>
#include <tqlayout.h>
#include <tqlistbox.h>
#include <tqprogressdialog.h>
#include <tqpushbutton.h>
#include <tqregexp.h>
#include <tqstring.h>
#include <tqtimer.h>

#include <kaction.h>
#include <kbuttonbox.h>
#include <klineedit.h>
#include <kcursor.h>
#include <kdebug.h>
#include <kfiledialog.h>
#include <kglobal.h>
#include <kinstance.h>
#include <kio/job.h>
#include <klocale.h>
#include <kmessagebox.h>
#include <kstandarddirs.h>
#include <kgenericfactory.h>

K_EXPORT_COMPONENT_FACTORY( katexmltoolsplugin, KGenericFactory<PluginKateXMLTools>( "katexmltools" ) )

class PluginView : public KXMLGUIClient
{
  friend class PluginKateXMLTools;

  public:
    Kate::MainWindow *win;
};

PluginKateXMLTools::PluginKateXMLTools( TQObject* tqparent, const char* name, const TQStringList& )
  : Kate::Plugin ( (Kate::Application*)tqparent, name )
{
  //kdDebug() << "PluginKateXMLTools constructor called" << endl;

  m_dtdString = TQString();
  m_urlString = TQString();
  m_docToAssignTo = 0L;

  m_mode = none;
  m_correctPos = 0;

  m_lastLine = 0;
  m_lastCol = 0;
  m_lastAllowed = TQStringList();
  m_popupOpenCol = -1;

  m_dtds.setAutoDelete( true );

  m_documentManager = ((Kate::Application*)tqparent)->documentManager();

//   connect( m_documentManager, TQT_SIGNAL(documentCreated()),
//             this, TQT_SLOT(slotDocumentCreated()) );
  connect( m_documentManager, TQT_SIGNAL(documentDeleted(uint)),
            this, TQT_SLOT(slotDocumentDeleted(uint)) );
}

PluginKateXMLTools::~PluginKateXMLTools()
{
  //kdDebug() << "xml tools descructor 1..." << endl;
}

void PluginKateXMLTools::addView( Kate::MainWindow *win )
{
  // TODO: doesn't this have to be deleted?
  PluginView *view = new PluginView ();
  ( void) new KAction ( i18n("&Insert Element..."), CTRL+Key_Return, this,
                        TQT_SLOT( slotInsertElement()), view->actionCollection(), "xml_tool_insert_element" );
  ( void) new KAction ( i18n("&Close Element"), CTRL+Key_Less, this,
                        TQT_SLOT( slotCloseElement()), view->actionCollection(), "xml_tool_close_element" );
  ( void) new KAction ( i18n("Assign Meta &DTD..." ), 0, this,
                        TQT_SLOT( getDTD()), view->actionCollection(), "xml_tool_assign" );

  view->setInstance( new KInstance("kate") );
  view->setXMLFile( "plugins/katexmltools/ui.rc" );
  win->guiFactory()->addClient( view );

  view->win = win;
  m_views.append( view );
}

void PluginKateXMLTools::removeView( Kate::MainWindow *win )
{
  for ( uint z=0; z < m_views.count(); z++ )
  {
    if ( m_views.at(z)->win == win )
    {
      PluginView *view = m_views.at( z );
      m_views.remove ( view );
      win->guiFactory()->removeClient( view );
      delete view;
    }
  }
}

void PluginKateXMLTools::slotDocumentDeleted( uint documentNumber )
{
  // Remove the document from m_DTDs, and also delete the PseudoDTD
  // if it becomes unused.
  if ( m_docDtds[ documentNumber ] )
  {
    kdDebug()<<"XMLTools:slotDocumentDeleted: documents: "<<m_docDtds.count()<<", DTDs: "<<m_dtds.count()<<endl;
    PseudoDTD *dtd = m_docDtds.take( documentNumber );

    TQIntDictIterator<PseudoDTD> it ( m_docDtds );
    for ( ; it.current(); ++it )
    {
      if ( it.current() == dtd )
        return;
    }

    TQDictIterator<PseudoDTD> it1( m_dtds );
    for ( ; it1.current() ; ++it1 )
    {
      if ( it1.current() == dtd )
      {
        m_dtds.remove( it1.currentKey() );
        return;
      }
    }
  }
}

void PluginKateXMLTools::backspacePressed()
{
  kdDebug() << "xml tools backspacePressed" << endl;

  if ( !application()->activeMainWindow() )
    return;

  Kate::View *kv = application()->activeMainWindow()->viewManager()->activeView();
  if( ! kv )
  {
    kdDebug() << "Warning: no Kate::View" << endl;
    return;
  }
  uint line, col;
  kv->cursorPositionReal( &line, &col );

  //kdDebug() << "++ redisplay popup? line:" << line << ", col: " << col << endl;
  if( m_lastLine == line && col == m_lastCol )
  {
    int len = col - m_popupOpenCol;
    if( len < 0 )
    {
      kdDebug() << "**Warning: len < 0" << endl;
      return;
    }
    //kdDebug() << "++ redisplay popup, " << m_lastAllowed.count() << ", len:" << len <<endl;
    connectSlots( kv );
    kv->showCompletionBox( stringListToCompletionEntryList(m_lastAllowed), len, false );
  }
}

void PluginKateXMLTools::emptyKeyEvent()
{
  keyEvent( 0, 0, TQString() );
}

void PluginKateXMLTools::keyEvent( int, int, const TQString &/*s*/ )
{
  //kdDebug() << "xml tools keyEvent: '" << s << endl;

  if ( !application()->activeMainWindow() )
    return;

  Kate::View *kv = application()->activeMainWindow()->viewManager()->activeView();
  if( ! kv )
  {
    kdDebug() << "Warning: no Kate::View" << endl;
    return;
  }

  uint docNumber = kv->document()->documentNumber();
  if( ! m_docDtds[ docNumber ] )
    // no meta DTD assigned yet
    return;

  // debug to test speed:
  //TQTime t; t.start();

  TQStringList allowed = TQStringList();

  // get char on the left of the cursor:
  uint line, col;
  kv->cursorPositionReal( &line, &col );
  TQString lineStr = kv->getDoc()->textLine( line );
  TQString leftCh = lineStr.mid( col-1, 1 );
  TQString secondLeftCh = lineStr.mid( col-2, 1 );

  if( leftCh == "&" )
  {
    kdDebug() << "Getting entities" << endl;
    allowed = m_docDtds[docNumber]->entities("" );
    m_mode = entities;
  }
  else if( leftCh == "<" )
  {
    kdDebug() << "*outside tag -> get elements" << endl;
    TQString parentElement = getParentElement( *kv, true );
    kdDebug() << "tqparent: " << parentElement << endl;
    allowed = m_docDtds[docNumber]->allowedElements(parentElement );
    m_mode = elements;
  }
  // TODO: optionally close tqparent tag if not left=="/>"
  else if( leftCh == " " || (isQuote(leftCh) && secondLeftCh == "=") )
  {
    // TODO: check secondLeftChar, too?! then you don't need to trigger
    // with space and we yet save CPU power
    TQString currentElement = insideTag( *kv );
    TQString currentAttribute;
    if( ! currentElement.isEmpty() )
      currentAttribute = insideAttribute( *kv );

    kdDebug() << "Tag: " << currentElement << endl;
    kdDebug() << "Attr: " << currentAttribute << endl;

    if( ! currentElement.isEmpty() && ! currentAttribute.isEmpty() )
    {
      kdDebug() << "*inside attribute -> get attribute values" << endl;
      allowed = m_docDtds[docNumber]->attributeValues(currentElement, currentAttribute );
      if( allowed.count() == 1 &&
          (allowed[0] == "CDATA" || allowed[0] == "ID" || allowed[0] == "IDREF" ||
          allowed[0] == "IDREFS" || allowed[0] == "ENTITY" || allowed[0] == "ENTITIES" ||
          allowed[0] == "NMTOKEN" || allowed[0] == "NMTOKENS" || allowed[0] == "NAME") )
      {
        // these must not be taken literally, e.g. don't insert the string "CDATA"
        allowed.clear();
      }
      else
      {
        m_mode = attributevalues;
      }
    }
    else if( ! currentElement.isEmpty() )
    {
      kdDebug() << "*inside tag -> get attributes" << endl;
      allowed = m_docDtds[docNumber]->allowedAttributes(currentElement );
      m_mode = attributes;
    }
  }

  //kdDebug() << "time elapsed (ms): " << t.elapsed() << endl;
  //kdDebug() << "Allowed strings: " << allowed.count() << endl;

  if( allowed.count() >= 1 && allowed[0] != "__EMPTY" )
  {
    allowed = sortTQStringList( allowed );
    connectSlots( kv );
    kv->showCompletionBox( stringListToCompletionEntryList( allowed ), 0, false );
    m_popupOpenCol = col;
    m_lastAllowed = allowed;
  }
  //else {
  //  m_lastAllowed.clear();
  //}
}

TQValueList<KTextEditor::CompletionEntry>
PluginKateXMLTools::stringListToCompletionEntryList( TQStringList list )
{
  TQValueList<KTextEditor::CompletionEntry> compList;
  KTextEditor::CompletionEntry entry;
  for( TQStringList::Iterator it = list.begin(); it != list.end(); ++it )
  {
    entry.text = ( *it );
    compList << entry;
  }
  return compList;
}


/**
 * disconnect all signals of a specified kateview from the local slots
 *
 */
void  PluginKateXMLTools::disconnectSlots( Kate::View *kv )
{
  disconnect( kv, TQT_SIGNAL(filterInsertString(KTextEditor::CompletionEntry*,TQString*)), this, 0 );
  disconnect( kv, TQT_SIGNAL(completionDone(KTextEditor::CompletionEntry)), this, 0 );
  disconnect( kv, TQT_SIGNAL(completionAborted()), this, 0 );
}

/**
 * connect all signals of a specified kateview to the local slots
 *
 */
void PluginKateXMLTools::connectSlots( Kate::View *kv )
{
  connect( kv, TQT_SIGNAL(filterInsertString(KTextEditor::CompletionEntry*,TQString*) ),
          this, TQT_SLOT(filterInsertString(KTextEditor::CompletionEntry*,TQString*)) );
  connect( kv, TQT_SIGNAL(completionDone(KTextEditor::CompletionEntry) ),
          this, TQT_SLOT(completionDone(KTextEditor::CompletionEntry)) );
  connect( kv, TQT_SIGNAL(completionAborted()), this, TQT_SLOT(completionAborted()) );
}

/**
 * Load the meta DTD. In case of success set the 'ready'
 * flag to true, to show that we're is ready to give hints about the DTD.
 */
void PluginKateXMLTools::getDTD()
{
  if ( !application()->activeMainWindow() )
    return;

  Kate::View *kv = application()->activeMainWindow()->viewManager()->activeView();
  if( ! kv )
  {
    kdDebug() << "Warning: no Kate::View" << endl;
    return;
  }

  // ### replace this with something more sane
  // Start where the supplied XML-DTDs are fed by default unless
  // user changed directory last time:

  TQString defaultDir = KGlobal::dirs()->findResourceDir("data", "katexmltools/" ) + "katexmltools/";
  if( m_urlString.isNull() ) {
    m_urlString = defaultDir;
  }
  KURL url;

  // Guess the meta DTD by looking at the doctype's public identifier.
  // XML allows comments etc. before the doctype, so look further than
  // just the first line.
  // Example syntax:
  // <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "DTD/xhtml1-transitional.dtd">
  uint checkMaxLines = 200;
  TQString documentStart = kv->getDoc()->text(0, 0, checkMaxLines+1, 0 );
  TQRegExp re( "<!DOCTYPE\\s+(.*)\\s+PUBLIC\\s+[\"'](.*)[\"']", false );
  re.setMinimal( true );
  int matchPos = re.search( documentStart );
  TQString filename;
  TQString doctype;
  TQString topElement;

  if( matchPos != -1 ) {
    topElement = re.cap( 1 );
    doctype = re.cap( 2 );
    kdDebug() << "Top element: " << topElement << endl;
    kdDebug() << "Doctype match: " << doctype << endl;
    // XHTML:
    if( doctype == "-//W3C//DTD XHTML 1.0 Transitional//EN" )
      filename = "xhtml1-transitional.dtd.xml";
    else if( doctype == "-//W3C//DTD XHTML 1.0 Strict//EN" )
      filename = "xhtml1-strict.dtd.xml";
    else if( doctype == "-//W3C//DTD XHTML 1.0 Frameset//EN" )
      filename = "xhtml1-frameset.dtd.xml";
    // HTML 4.0:
    else if ( doctype == "-//W3C//DTD HTML 4.01 Transitional//EN" )
      filename = "html4-loose.dtd.xml";
    else if ( doctype == "-//W3C//DTD HTML 4.01//EN" )
      filename = "html4-strict.dtd.xml";
    // KDE Docbook:
    else if ( doctype == "-//KDE//DTD DocBook XML V4.1.2-Based Variant V1.1//EN" )
      filename = "kde-docbook.dtd.xml";
  }
  else if( documentStart.tqfind("<xsl:stylesheet" ) != -1 &&
             documentStart.tqfind( "xmlns:xsl=\"http://www.w3.org/1999/XSL/Transform\"") != -1 )
  {
    /* XSLT doesn't have a doctype/DTD. We look for an xsl:stylesheet tag instead.
      Example:
      <xsl:stylesheet version="1.0"
      xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
      xmlns="http://www.w3.org/TR/xhtml1/strict">
    */
    filename = "xslt-1.0.dtd.xml";
    doctype = "XSLT 1.0";
  }
  else
    kdDebug() << "No doctype found" << endl;

  if( filename.isEmpty() )
  {
    // no meta dtd found for this file
    url = KFileDialog::getOpenURL(m_urlString, "*.xml",
                                  0, i18n( "Assign Meta DTD in XML Format") );
  }
  else
  {
    url.setFileName( defaultDir + filename );
    KMessageBox::information(0, i18n("The current file has been identified "
        "as a document of type \"%1\". The meta DTD for this document type "
            "will now be loaded.").tqarg( doctype ),
        i18n( "Loading XML Meta DTD" ),
        TQString::tqfromLatin1( "DTDAssigned") );
  }

  if( url.isEmpty() )
    return;

  m_urlString = url.url();	// remember directory for next time

  if ( m_dtds[ m_urlString ] )
    assignDTD( m_dtds[ m_urlString ], kv->document() );
  else
  {
    m_dtdString = "";
    m_docToAssignTo = kv->document();

    TQApplication::setOverrideCursor( KCursor::waitCursor() );
    KIO::Job *job = KIO::get( url );
    connect( job, TQT_SIGNAL(result(KIO::Job *)), this, TQT_SLOT(slotFinished(KIO::Job *)) );
    connect( job, TQT_SIGNAL(data(KIO::Job *, const TQByteArray &)),
             this, TQT_SLOT(slotData(KIO::Job *, const TQByteArray &)) );
  }
  kdDebug()<<"XMLTools::getDTD: Documents: "<<m_docDtds.count()<<", DTDs: "<<m_dtds.count()<<endl;
}

void PluginKateXMLTools::slotFinished( KIO::Job *job )
{
  if( job->error() )
  {
    //kdDebug() << "XML Plugin error: DTD in XML format (" << filename << " ) could not be loaded" << endl;
    job->showErrorDialog( 0 );
  }
  else if ( static_cast<KIO::TransferJob *>(job)->isErrorPage() )
  {
    // catch failed loading loading via http:
    KMessageBox::error(0, i18n("The file '%1' could not be opened. "
        "The server returned an error.").tqarg( m_urlString ),
        i18n( "XML Plugin Error") );
  }
  else
  {
    PseudoDTD *dtd = new PseudoDTD();
    dtd->analyzeDTD( m_urlString, m_dtdString );

    m_dtds.insert( m_urlString, dtd );
    assignDTD( dtd, m_docToAssignTo );

    // clean up a bit
    m_docToAssignTo = 0;
    m_dtdString = "";
  }
  TQApplication::restoreOverrideCursor();
}

void PluginKateXMLTools::slotData( KIO::Job *, const TQByteArray &data )
{
  m_dtdString += TQString( data );
}

void PluginKateXMLTools::assignDTD( PseudoDTD *dtd, KTextEditor::Document *doc )
{
  m_docDtds.tqreplace( doc->documentNumber(), dtd );
  connect( doc, TQT_SIGNAL(charactersInteractivelyInserted(int,int,const TQString&) ),
           this, TQT_SLOT(keyEvent(int,int,const TQString&)) );

  disconnect( doc, TQT_SIGNAL(backspacePressed()), this, 0 );
  connect( doc, TQT_SIGNAL(backspacePressed() ),
           this, TQT_SLOT(backspacePressed()) );
}

/**
 * Offer a line edit with completion for possible elements at cursor position and insert the
 * tag one chosen/entered by the user, plus its closing tag. If there's a text selection,
 * add the markup around it.
 */
void PluginKateXMLTools::slotInsertElement()
{
  if ( !application()->activeMainWindow() )
    return;

  Kate::View *kv = application()->activeMainWindow()->viewManager()->activeView();
  if( ! kv )
  {
    kdDebug() << "Warning: no Kate::View" << endl;
    return;
  }

  PseudoDTD *dtd = m_docDtds[kv->document()->documentNumber()];
  TQString parentElement = getParentElement( *kv, false );
  TQStringList allowed;

  if( dtd )
    allowed = dtd->allowedElements(parentElement );

  InsertElement *dialog = new InsertElement(
      ( TQWidget *)application()->activeMainWindow()->viewManager()->activeView(), "insertXml" );
  TQString text = dialog->showDialog( allowed );
  delete dialog;

  if( !text.isEmpty() )
  {
    TQStringList list = TQStringList::split( ' ', text );
    TQString pre;
    TQString post;
    // anders: use <tagname/> if the tag is required to be empty.
    // In that case maybe we should not remove the selection? or overwrite it?
    int adjust = 0; // how much to move cursor.
    // if we know that we have attributes, it goes
    // just after the tag name, otherwise between tags.
    if ( dtd && dtd->allowedAttributes(list[0]).count() )
      adjust++;   // the ">"

    if ( dtd && dtd->allowedElements(list[0]).tqcontains("__EMPTY") )
    {
      pre = "<" + text + "/>";
      if ( adjust )
        adjust++; // for the "/"
    }
    else
    {
      pre = "<" + text + ">";
      post ="</" + list[0] + ">";
    }

    TQString marked;
    if ( ! post.isEmpty() )
      marked = kv->getDoc()->selection();

    if( marked.length() > 0 )
      kv->getDoc()->removeSelectedText();

    kv->insertText( pre + marked + post );
  }
}

/**
 * Insert a closing tag for the nearest not-closed tqparent element.
 */
void PluginKateXMLTools::slotCloseElement()
{
  if ( !application()->activeMainWindow() )
    return;

  Kate::View *kv = application()->activeMainWindow()->viewManager()->activeView();
  if( ! kv )
  {
    kdDebug() << "Warning: no Kate::View" << endl;
    return;
  }
  TQString parentElement = getParentElement( *kv, false );

  //kdDebug() << "parentElement: '" << parentElement << "'" << endl;
  TQString closeTag = "</" + parentElement + ">";
  if( ! parentElement.isEmpty() )
    kv->insertText( closeTag );
}

// modify the completion string before it gets inserted
void PluginKateXMLTools::filterInsertString( KTextEditor::CompletionEntry *ce, TQString *text )
{
  kdDebug() << "filterInsertString str: " << *text << endl;
  kdDebug() << "filterInsertString text: " << ce->text << endl;

  if ( !application()->activeMainWindow() )
    return;

  Kate::View *kv = application()->activeMainWindow()->viewManager()->activeView();
  if( ! kv )
  {
    kdDebug() << "Warning (filterInsertString() ): no Kate::View" << endl;
    return;
  }

  uint line, col;
  kv->cursorPositionReal( &line, &col );
  TQString lineStr = kv->getDoc()->textLine(line );
  TQString leftCh = lineStr.mid( col-1, 1 );
  TQString rightCh = lineStr.mid( col, 1 );

  m_correctPos = 0;	// where to move the cursor after completion ( >0 = move right )
  if( m_mode == entities )
  {
    // This is a bit ugly, but entities are case-sensitive
    // and we want the correct completion even if the user started typing
    // e.g. in lower case but the entity is in upper case
    kv->getDoc()->removeText( line, col - (ce->text.length() - text->length()), line, col );
    *text = ce->text + ";";
  }

  else if( m_mode == attributes )
  {
    *text = *text + "=\"\"";
    m_correctPos = -1;
    if( !rightCh.isEmpty() && rightCh != ">" && rightCh != "/" && rightCh != " " )
    {	// TODO: other whitespaces
      // add space in front of the next attribute
      *text = *text + " ";
      m_correctPos--;
    }
  }

  else if( m_mode == attributevalues )
  {
    // TODO: support more than one line
    uint startAttValue = 0;
    uint endAttValue = 0;

    // find left quote:
    for( startAttValue = col; startAttValue > 0; startAttValue-- )
    {
      TQString ch = lineStr.mid( startAttValue-1, 1 );
      if( isQuote(ch) )
        break;
    }

    // find right quote:
    for( endAttValue = col; endAttValue <= lineStr.length(); endAttValue++ )
    {
      TQString ch = lineStr.mid( endAttValue-1, 1 );
      if( isQuote(ch) )
        break;
    }

    // maybe the user has already typed something to trigger completion,
    // don't overwrite that:
    startAttValue += ce->text.length() - text->length();
		// delete the current contents of the attribute:
    if( startAttValue < endAttValue )
    {
      kv->getDoc()->removeText( line, startAttValue, line, endAttValue-1 );
      // FIXME: this makes the scrollbar jump
      // but without it, inserting sometimes goes crazy :-(
      kv->setCursorPositionReal( line, startAttValue );
    }
  }

  else if( m_mode == elements )
  {
    // anders: if the tag is marked EMPTY, insert in form <tagname/>
    TQString str;
    int docNumber = kv->document()->documentNumber();
    bool isEmptyTag =m_docDtds[docNumber]->allowedElements(ce->text).tqcontains( "__EMPTY" );
    if ( isEmptyTag )
      str = "/>";
    else
      str = "></" + ce->text + ">";
    *text = *text + str;

    // Place the cursor where it is most likely wanted:
    // allways inside the tag if the tag is empty AND the DTD indicates that there are attribs)
    // outside for open tags, UNLESS there are mandatory attributes
    if ( m_docDtds[docNumber]->requiredAttributes(ce->text).count()
         || ( isEmptyTag && m_docDtds[docNumber]->allowedAttributes( ce->text).count() ) )
      m_correctPos = - str.length();
    else if ( ! isEmptyTag )
      m_correctPos = -str.length() + 1;
  }
}

static void correctPos( Kate::View *kv, int count )
{
  if( count > 0 )
  {
    for( int i = 0; i < count; i++ )
      kv->cursorRight();
  }
  else if( count < 0 )
  {
    for( int i = 0; i < -count; i++ )
      kv->cursorLeft();
  }
}

void PluginKateXMLTools::completionAborted()
{
  if ( !application()->activeMainWindow() )
    return;

  Kate::View *kv = application()->activeMainWindow()->viewManager()->activeView();
  if( ! kv )
  {
    kdDebug() << "Warning (completionAborted() ): no Kate::View" << endl;
    return;
  }
  disconnectSlots( kv );
  kv->cursorPositionReal( &m_lastLine, &m_lastCol );
  m_lastCol--;

  correctPos( kv,m_correctPos );
  m_correctPos = 0;

  kdDebug() << "completionAborted() at line:" << m_lastLine << ", col:" << m_lastCol << endl;
}

void PluginKateXMLTools::completionDone( KTextEditor::CompletionEntry )
{
  kdDebug() << "completionDone()" << endl;

  if ( !application()->activeMainWindow() )
    return;

  Kate::View *kv = application()->activeMainWindow()->viewManager()->activeView();
  if( ! kv )
  {
    kdDebug() << "Warning (completionDone() ): no Kate::View" << endl;
    return;
  }
  disconnectSlots( kv );

  correctPos( kv,m_correctPos );
  m_correctPos = 0;

  if( m_mode == attributes )
  {
    // immediately show attribute values:
    TQTimer::singleShot( 10, this, TQT_SLOT(emptyKeyEvent()) );
  }

}

// ========================================================================
// Pseudo-XML stuff:

/**
 * Check if cursor is inside a tag, that is
 * if "<" occurs before ">" occurs ( on the left side of the cursor ).
 * Return the tag name, return "" if we cursor is outside a tag.
 */
TQString PluginKateXMLTools::insideTag( Kate::View &kv )
{
  uint line = 0, col = 0;
  kv.cursorPositionReal( &line, &col );
  int y = line;	// another variable because uint <-> int

  do {
    TQString lineStr = kv.getDoc()->textLine(y );
    for( uint x = col; x > 0; x-- )
    {
      TQString ch = lineStr.mid( x-1, 1 );
      if( ch == ">" )   // cursor is outside tag
        return "";

      if( ch == "<" )
      {
        TQString tag;
        // look for white space on the right to get the tag name
        for( uint z = x; z <= lineStr.length() ; z++ )
        {
          ch = lineStr.mid( z-1, 1 );
          if( ch.at(0).isSpace() || ch == "/" || ch == ">" )
            return tag.right( tag.length()-1 );

          if( z == lineStr.length() )
          {
            tag += ch;
            return tag.right( tag.length()-1 );
          }

          tag += ch;
        }
      }
    }
    y--;
    col = kv.getDoc()->textLine(y).length();
  } while( y >= 0 );

  return "";
}

/**
 * Check if cursor is inside an attribute value, that is
 * if '="' is on the left, and if it's nearer than "<" or ">".
 *
 * @Return the attribute name or "" if we're outside an attribute
 * value.
 *
 * Note: only call when insideTag() == true.
 * TODO: allow whitespace around "="
 */
TQString PluginKateXMLTools::insideAttribute( Kate::View &kv )
{
  uint line = 0, col = 0;
  kv.cursorPositionReal( &line, &col );
  int y = line;	// another variable because uint <-> int
  uint x = 0;
  TQString lineStr = "";
  TQString ch = "";

  do {
    lineStr = kv.getDoc()->textLine(y );
    for( x = col; x > 0; x-- )
    {
      ch = lineStr.mid( x-1, 1 );
      TQString chLeft = lineStr.mid( x-2, 1 );
      // TODO: allow whitespace
      if( isQuote(ch) && chLeft == "=" )
        break;
      else if( isQuote(ch) && chLeft != "=" )
        return "";
      else if( ch == "<" || ch == ">" )
        return "";
    }
    y--;
    col = kv.getDoc()->textLine(y).length();
  } while( !isQuote(ch) );

  // look for next white space on the left to get the tag name
  TQString attr = "";
  for( int z = x; z >= 0; z-- )
  {
    ch = lineStr.mid( z-1, 1 );

    if( ch.at(0).isSpace() )
      break;

    if( z == 0 )
    {   // start of line == whitespace
      attr += ch;
      break;
    }

    attr = ch + attr;
  }

  return attr.left( attr.length()-2 );
}

/**
 * Find the tqparent element for the current cursor position. That is,
 * go left and find the first opening element that's not closed yet,
 * ignoring empty elements.
 * Examples: If cursor is at "X", the correct tqparent element is "p":
 * <p> <a x="xyz"> foo <i> test </i> bar </a> X
 * <p> <a x="xyz"> foo bar </a> X
 * <p> foo <img/> bar X
 * <p> foo bar X
 */
TQString PluginKateXMLTools::getParentElement( Kate::View &kv, bool ignoreSingleChar )
{
  enum {
    parsingText,
    parsingElement,
    parsingElementBoundary,
    parsingNonElement,
    parsingAttributeDquote,
    parsingAttributeSquote,
    parsingIgnore
  } parseState;
  parseState = ignoreSingleChar ? parsingIgnore : parsingText;

  int nestingLevel = 0;

  uint line, col;
  kv.cursorPositionReal( &line, &col );
  TQString str = kv.getDoc()->textLine(line );

  while( true )
  {
    // move left a character
    if( !col-- )
    {
      do
      {
        if( !line-- ) return TQString(); // reached start of document
        str = kv.getDoc()->textLine(line );
        col = str.length();
      } while( !col );
      --col;
    }

    ushort ch = str.tqat( col).tqunicode();

    switch( parseState )
    {
      case parsingIgnore:
        parseState = parsingText;
        break;

      case parsingText:
        switch( ch )
        {
          case '<':
            // hmm... we were actually inside an element
            return TQString();

          case '>':
            // we just hit an element boundary
            parseState = parsingElementBoundary;
            break;
        }
        break;

      case parsingElement:
        switch( ch )
        {
          case '"': // attribute ( double quoted )
            parseState = parsingAttributeDquote;
            break;

            case '\'': // attribute ( single quoted )
              parseState = parsingAttributeSquote;
              break;

              case '/': // close tag
                parseState = parsingNonElement;
                ++nestingLevel;
                break;

          case '<':
            // we just hit the start of the element...
            if( nestingLevel-- ) break;

            TQString tag = str.mid( col + 1 );
            for( uint pos = 0, len = tag.length(); pos < len; ++pos ) {
              ch = tag.tqat( pos).tqunicode();
              if( ch == ' ' || ch == '\t' || ch == '>' ) {
                tag.truncate( pos );
                break;
              }
            }
            return tag;
        }
        break;

      case parsingElementBoundary:
        switch( ch )
        {
          case '?': // processing instruction
          case '-': // comment
          case '/': // empty element
            parseState = parsingNonElement;
            break;

          case '"':
            parseState = parsingAttributeDquote;
            break;

          case '\'':
            parseState = parsingAttributeSquote;
            break;

          case '<': // empty tag ( bad XML )
            parseState = parsingText;
            break;

          default:
            parseState = parsingElement;
        }
        break;

      case parsingAttributeDquote:
        if( ch == '"' ) parseState = parsingElement;
        break;

      case parsingAttributeSquote:
        if( ch == '\'' ) parseState = parsingElement;
        break;

      case parsingNonElement:
        if( ch == '<' ) parseState = parsingText;
        break;
    }
  }
}

/**
 * Return true if the tag is neither a closing tag
 * nor an empty tag, nor a comment, nor processing instruction.
 */
bool PluginKateXMLTools::isOpeningTag( TQString tag )
{
  return ( !isClosingTag(tag) && !isEmptyTag(tag ) &&
      !tag.startsWith( "<?") && !tag.startsWith("<!") );
}

/**
 * Return true if the tag is a closing tag. Return false
 * if the tag is an opening tag or an empty tag ( ! )
 */
bool PluginKateXMLTools::isClosingTag( TQString tag )
{
  return ( tag.startsWith("</") );
}

bool PluginKateXMLTools::isEmptyTag( TQString tag )
{
  return ( tag.right(2) == "/>" );
}

/**
 * Return true if ch is a single or double quote. Expects ch to be of length 1.
 */
bool PluginKateXMLTools::isQuote( TQString ch )
{
  return ( ch == "\"" || ch == "'" );
}


// ========================================================================
// Tools:

/** Sort a TQStringList case-insensitively. Static. TODO: make it more simple. */
TQStringList PluginKateXMLTools::sortTQStringList( TQStringList list ) {
  // Sort list case-insensitive. This looks complicated but using a TQMap
  // is even suggested by the TQt documentation.
  TQMap<TQString,TQString> mapList;
  for ( TQStringList::Iterator it = list.begin(); it != list.end(); ++it )
  {
    TQString str = *it;
    if( mapList.tqcontains(str.lower()) )
    {
      // do not override a previous value, e.g. "Auml" and "auml" are two different
      // entities, but they should be sorted next to each other.
      // TODO: currently it's undefined if e.g. "A" or "a" comes first, it depends on
      // the meta DTD ( really? it seems to work okay?!? )
      mapList[str.lower()+"_"] = str;
    }
    else
      mapList[str.lower()] = str;
  }

  list.clear();
  TQMap<TQString,TQString>::Iterator it;

  // TQt doc: "the items are alphabetically sorted [by key] when iterating over the map":
  for( it = mapList.begin(); it != mapList.end(); ++it )
    list.append( it.data() );

  return list;
}

//BEGIN InsertElement dialog
InsertElement::InsertElement( TQWidget *tqparent, const char *name )
  :KDialogBase( tqparent, name, true, i18n("Insert XML Element" ),
               KDialogBase::Ok|KDialogBase::Cancel)
{
}

InsertElement::~InsertElement()
{
}

void InsertElement::slotHistoryTextChanged( const TQString& text )
{
  enableButtonOK( !text.isEmpty() );
}

TQString InsertElement::showDialog( TQStringList &completions )
{
  TQWidget *page = new TQWidget( this );
  setMainWidget( page );
  TQVBoxLayout *topLayout = new TQVBoxLayout( page, 0, spacingHint() );

  KHistoryCombo *combo = new KHistoryCombo( page, "value" );
  combo->setHistoryItems( completions, true );
  connect( combo->lineEdit(), TQT_SIGNAL(textChanged ( const TQString & )),
           this, TQT_SLOT(slotHistoryTextChanged(const TQString &)) );
  TQString text = i18n( "Enter XML tag name and attributes (\"<\", \">\" and closing tag will be supplied):" );
  TQLabel *label = new TQLabel( text, page, "insert" );

  topLayout->addWidget( label );
  topLayout->addWidget( combo );

  combo->setFocus();
  slotHistoryTextChanged( combo->lineEdit()->text() );
  if( exec() )
    return combo->currentText();

  return TQString();
}
//END InsertElement dialog
// kate: space-indent on; indent-width 2; tqreplace-tabs on; mixed-indent off;