src/motif/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        textctrl.cpp
   3 // Purpose:     wxTextCtrl
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     17/09/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "textctrl.h"
  14 #endif
  15
  16 #include <sys/types.h>
  17 #include <sys/stat.h>
  18 #include <fstream.h>
  19
  20 #include "wx/textctrl.h"
  21 #include "wx/settings.h"
  22 #include "wx/filefn.h"
  23 #include "wx/utils.h"
  24
  25 #if defined(__BORLANDC__) && !defined(__WIN32__)
  26 #include <alloc.h>
  27 #else
  28 #ifndef __GNUWIN32__
  29 #include <malloc.h>
  30 #endif
  31 #endif
  32
  33 #include <Xm/Text.h>
  34 #include <sys/types.h>
  35 #include <sys/stat.h>
  36 #include <ctype.h>
  37
  38 #include "wx/motif/private.h"
  39
  40 static void
  41 wxTextWindowChangedProc (Widget w, XtPointer clientData, XtPointer ptr);
  42 static void
  43 wxTextWindowModifyProc (Widget w, XtPointer clientData, XmTextVerifyCallbackStruct *cbs);
  44 static void
  45 wxTextWindowGainFocusProc (Widget w, XtPointer clientData, XmAnyCallbackStruct *cbs);
  46 static void
  47 wxTextWindowLoseFocusProc (Widget w, XtPointer clientData, XmAnyCallbackStruct *cbs);
  48 static void wxTextWindowActivateProc(Widget w, XtPointer clientData,
  49                       XmAnyCallbackStruct *ptr);
  50
  51 #if !USE_SHARED_LIBRARY
  52 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxControl)
  53
  54 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
  55         EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
  56         EVT_CHAR(wxTextCtrl::OnChar)
  57 END_EVENT_TABLE()
  58 #endif
  59
  60 // Text item
  61 wxTextCtrl::wxTextCtrl()
  62 #ifndef NO_TEXT_WINDOW_STREAM
  63  :streambuf()
  64 #endif
  65 {
  66     m_fileName = "";
  67     m_tempCallbackStruct = (void*) NULL;
  68     m_modified = FALSE;
  69     m_processedDefault = FALSE;
  70 }
  71
  72 bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
  73                    const wxString& value,
  74            const wxPoint& pos,
  75            const wxSize& size, long style,
  76            const wxValidator& validator,
  77            const wxString& name)
  78 {
  79     m_tempCallbackStruct = (void*) NULL;
  80     m_modified = FALSE;
  81     m_processedDefault = FALSE;
  82     m_fileName = "";
  83     m_backgroundColour = parent->GetBackgroundColour();
  84     m_foregroundColour = parent->GetForegroundColour();
  85
  86     SetName(name);
  87     SetValidator(validator);
  88     if (parent) parent->AddChild(this);
  89
  90     m_windowStyle = style;
  91
  92     if ( id == -1 )
  93             m_windowId = (int)NewControlId();
  94     else
  95             m_windowId = id;
  96
  97     Widget parentWidget = (Widget) parent->GetClientWidget();
  98
  99     bool wantHorizScrolling = ((m_windowStyle & wxHSCROLL) != 0);
 100
 101     // If we don't have horizontal scrollbars, we want word wrap.
 102     bool wantWordWrap = !wantHorizScrolling;
 103
 104     if (m_windowStyle & wxTE_MULTILINE)
 105     {
 106         Arg args[2];
 107         XtSetArg (args[0], XmNscrollHorizontal, wantHorizScrolling ? True : False);
 108         XtSetArg (args[1], XmNwordWrap, wantWordWrap ? True : False);
 109
 110         m_mainWidget = (WXWidget) XmCreateScrolledText (parentWidget, (char*) (const char*) name, args, 2);
 111
 112         XtVaSetValues ((Widget) m_mainWidget,
 113                  XmNeditable, ((style & wxTE_READONLY) ? False : True),
 114                  XmNeditMode, XmMULTI_LINE_EDIT,
 115                  NULL);
 116         XtManageChild ((Widget) m_mainWidget);
 117     }
 118     else
 119     {
 120         m_mainWidget = (WXWidget) XtVaCreateManagedWidget ((char*) (const char*) name,
 121                  xmTextWidgetClass, parentWidget,
 122                  NULL);
 123
 124         // TODO: Is this relevant? What does it do?
 125         int noCols = 2;
 126         if (!value.IsNull() && (value.Length() > (unsigned int) noCols))
 127             noCols = value.Length();
 128         XtVaSetValues ((Widget) m_mainWidget,
 129                  XmNcolumns, noCols,
 130                  NULL);
 131     }
 132
 133     if (!value.IsNull())
 134         XmTextSetString ((Widget) m_mainWidget, (char*) (const char*) value);
 135
 136     XtAddCallback((Widget) m_mainWidget, XmNvalueChangedCallback, (XtCallbackProc)wxTextWindowChangedProc, (XtPointer)this);
 137
 138     XtAddCallback((Widget) m_mainWidget, XmNmodifyVerifyCallback, (XtCallbackProc)wxTextWindowModifyProc, (XtPointer)this);
 139
 140     XtAddCallback((Widget) m_mainWidget, XmNactivateCallback, (XtCallbackProc)wxTextWindowActivateProc, (XtPointer)this);
 141
 142     XtAddCallback((Widget) m_mainWidget, XmNfocusCallback, (XtCallbackProc)wxTextWindowGainFocusProc, (XtPointer)this);
 143
 144     XtAddCallback((Widget) m_mainWidget, XmNlosingFocusCallback, (XtCallbackProc)wxTextWindowLoseFocusProc, (XtPointer)this);
 145
 146     m_windowFont = parent->GetFont();
 147     ChangeFont(FALSE);
 148
 149     SetCanAddEventHandler(TRUE);
 150     AttachWidget (parent, m_mainWidget, (WXWidget) NULL, pos.x, pos.y, size.x, size.y);
 151
 152     ChangeBackgroundColour();
 153
 154     return TRUE;
 155 }
 156
 157 WXWidget wxTextCtrl::GetTopWidget() const
 158 {
 159     return ((m_windowStyle & wxTE_MULTILINE) ? (WXWidget) XtParent((Widget) m_mainWidget) : m_mainWidget);
 160 }
 161
 162 wxString wxTextCtrl::GetValue() const
 163 {
 164     if (m_windowStyle & wxTE_PASSWORD)
 165         return m_value;
 166     else
 167     {
 168         char *s = XmTextGetString ((Widget) m_mainWidget);
 169         if (s)
 170         {
 171             wxString str(s);
 172             XtFree (s);
 173             return str;
 174         }
 175         else
 176         {
 177             return wxEmptyString;
 178         }
 179     }
 180 }
 181
 182 void wxTextCtrl::SetValue(const wxString& value)
 183 {
 184   // This assert is wrong -- means that you can't set an empty
 185   // string (IsNull == IsEmpty).
 186   //    wxASSERT_MSG( (!value.IsNull()), "Must not pass a null string to wxTextCtrl::SetValue." ) ;
 187     m_inSetValue = TRUE;
 188
 189     XmTextSetString ((Widget) m_mainWidget, (char*) (const char*) value);
 190
 191     m_inSetValue = FALSE;
 192 }
 193
 194 // Clipboard operations
 195 void wxTextCtrl::Copy()
 196 {
 197     XmTextCopy((Widget) m_mainWidget, CurrentTime);
 198 }
 199
 200 void wxTextCtrl::Cut()
 201 {
 202     XmTextCut((Widget) m_mainWidget, CurrentTime);
 203 }
 204
 205 void wxTextCtrl::Paste()
 206 {
 207     XmTextPaste((Widget) m_mainWidget);
 208 }
 209
 210 void wxTextCtrl::SetEditable(bool editable)
 211 {
 212     XmTextSetEditable((Widget) m_mainWidget, (Boolean) editable);
 213 }
 214
 215 void wxTextCtrl::SetInsertionPoint(long pos)
 216 {
 217     XmTextSetInsertionPosition ((Widget) m_mainWidget, (XmTextPosition) pos);
 218 }
 219
 220 void wxTextCtrl::SetInsertionPointEnd()
 221 {
 222     long pos = GetLastPosition();
 223     SetInsertionPoint(pos);
 224 }
 225
 226 long wxTextCtrl::GetInsertionPoint() const
 227 {
 228     return (long) XmTextGetInsertionPosition ((Widget) m_mainWidget);
 229 }
 230
 231 long wxTextCtrl::GetLastPosition() const
 232 {
 233     return (long) XmTextGetLastPosition ((Widget) m_mainWidget);
 234 }
 235
 236 void wxTextCtrl::Replace(long from, long to, const wxString& value)
 237 {
 238     XmTextReplace ((Widget) m_mainWidget, (XmTextPosition) from, (XmTextPosition) to,
 239                  (char*) (const char*) value);
 240 }
 241
 242 void wxTextCtrl::Remove(long from, long to)
 243 {
 244     XmTextSetSelection ((Widget) m_mainWidget, (XmTextPosition) from, (XmTextPosition) to,
 245                       (Time) 0);
 246     XmTextRemove ((Widget) m_mainWidget);
 247 }
 248
 249 void wxTextCtrl::SetSelection(long from, long to)
 250 {
 251     XmTextSetSelection ((Widget) m_mainWidget, (XmTextPosition) from, (XmTextPosition) to,
 252                       (Time) 0);
 253 }
 254
 255 bool wxTextCtrl::LoadFile(const wxString& file)
 256 {
 257     if (!wxFileExists(file))
 258         return FALSE;
 259
 260     m_fileName = file;
 261
 262     Clear();
 263
 264     Widget textWidget = (Widget) m_mainWidget;
 265     FILE *fp;
 266
 267     struct stat statb;
 268     if ((stat ((char*) (const char*) file, &statb) == -1) || (statb.st_mode & S_IFMT) != S_IFREG ||
 269       !(fp = fopen ((char*) (const char*) file, "r")))
 270     {
 271       return FALSE;
 272     }
 273     else
 274     {
 275       long len = statb.st_size;
 276       char *text;
 277       if (!(text = XtMalloc ((unsigned) (len + 1))))
 278         {
 279           fclose (fp);
 280           return FALSE;
 281         }
 282       if (fread (text, sizeof (char), len, fp) != (size_t) len)
 283         {
 284         }
 285       fclose (fp);
 286
 287       text[len] = 0;
 288       XmTextSetString (textWidget, text);
 289       //      m_textPosition = len;
 290       XtFree (text);
 291       m_modified = FALSE;
 292       return TRUE;
 293     }
 294 }
 295
 296 // If file is null, try saved file name first
 297 // Returns TRUE if succeeds.
 298 bool wxTextCtrl::SaveFile(const wxString& file)
 299 {
 300     wxString theFile(file);
 301     if (theFile == "")
 302         theFile = m_fileName;
 303     if (theFile == "")
 304         return FALSE;
 305     m_fileName = theFile;
 306
 307   Widget textWidget = (Widget) m_mainWidget;
 308   FILE *fp;
 309
 310   if (!(fp = fopen ((char*) (const char*) theFile, "w")))
 311     {
 312       return FALSE;
 313     }
 314   else
 315     {
 316       char *text = XmTextGetString (textWidget);
 317       long len = XmTextGetLastPosition (textWidget);
 318
 319       if (fwrite (text, sizeof (char), len, fp) != (size_t) len)
 320         {
 321           // Did not write whole file
 322         }
 323       // Make sure newline terminates the file
 324       if (text[len - 1] != '\n')
 325         fputc ('\n', fp);
 326
 327       fclose (fp);
 328       XtFree (text);
 329       m_modified = FALSE;
 330       return TRUE;
 331     }
 332 }
 333
 334 void wxTextCtrl::WriteText(const wxString& text)
 335 {
 336     long textPosition = GetInsertionPoint() + strlen (text);
 337     XmTextInsert ((Widget) m_mainWidget, GetInsertionPoint(), (char*) (const char*) text);
 338     XtVaSetValues ((Widget) m_mainWidget, XmNcursorPosition, textPosition, NULL);
 339     SetInsertionPoint(textPosition);
 340     XmTextShowPosition ((Widget) m_mainWidget, textPosition);
 341     m_modified = TRUE;
 342 }
 343
 344 void wxTextCtrl::Clear()
 345 {
 346     XmTextSetString ((Widget) m_mainWidget, "");
 347     m_modified = FALSE;
 348 }
 349
 350 bool wxTextCtrl::IsModified() const
 351 {
 352     return m_modified;
 353 }
 354
 355 // Makes 'unmodified'
 356 void wxTextCtrl::DiscardEdits()
 357 {
 358     XmTextSetString ((Widget) m_mainWidget, "");
 359     m_modified = FALSE;
 360 }
 361
 362 int wxTextCtrl::GetNumberOfLines() const
 363 {
 364     // HIDEOUSLY inefficient, but we have no choice.
 365     char *s = XmTextGetString ((Widget) m_mainWidget);
 366     if (s)
 367     {
 368       long i = 0;
 369       int currentLine = 0;
 370       bool finished = FALSE;
 371       while (!finished)
 372         {
 373           int ch = s[i];
 374           if (ch == '\n')
 375             {
 376               currentLine++;
 377               i++;
 378             }
 379           else if (ch == 0)
 380             {
 381               finished = TRUE;
 382             }
 383           else
 384             i++;
 385         }
 386
 387       XtFree (s);
 388       return currentLine;
 389     }
 390     return 0;
 391 }
 392
 393 long wxTextCtrl::XYToPosition(long x, long y) const
 394 {
 395 /* It seems, that there is a bug in some versions of the Motif library,
 396    so the original wxWin-Code doesn't work. */
 397 /*
 398   Widget textWidget = (Widget) handle;
 399   return (long) XmTextXYToPos (textWidget, (Position) x, (Position) y);
 400 */
 401     /* Now a little workaround: */
 402     long r=0;
 403     for (int i=0; i<y; i++) r+=(GetLineLength(i)+1);
 404     return r+x;
 405 }
 406
 407 void wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
 408 {
 409     Position xx, yy;
 410     XmTextPosToXY((Widget) m_mainWidget, pos, &xx, &yy);
 411     *x = xx; *y = yy;
 412 }
 413
 414 void wxTextCtrl::ShowPosition(long pos)
 415 {
 416     XmTextShowPosition ((Widget) m_mainWidget, (XmTextPosition) pos);
 417 }
 418
 419 int wxTextCtrl::GetLineLength(long lineNo) const
 420 {
 421     wxString str = GetLineText (lineNo);
 422     return (int) str.Length();
 423 }
 424
 425 wxString wxTextCtrl::GetLineText(long lineNo) const
 426 {
 427     // HIDEOUSLY inefficient, but we have no choice.
 428     char *s = XmTextGetString ((Widget) m_mainWidget);
 429
 430     if (s)
 431     {
 432         wxString buf("");
 433         long i;
 434         int currentLine = 0;
 435         for (i = 0; currentLine != lineNo && s[i]; i++ )
 436         if (s[i] == '\n')
 437           currentLine++;
 438         // Now get the text
 439         int j;
 440         for (j = 0; s[i] && s[i] != '\n'; i++, j++ )
 441             buf += s[i];
 442
 443         XtFree(s);
 444         return buf;
 445   }
 446   else
 447     return wxEmptyString;
 448 }
 449
 450 /*
 451  * Text item
 452  */
 453
 454 void wxTextCtrl::Command(wxCommandEvent & event)
 455 {
 456     SetValue (event.GetString());
 457     ProcessCommand (event);
 458 }
 459
 460 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
 461 {
 462     // By default, load the first file into the text window.
 463     if (event.GetNumberOfFiles() > 0)
 464     {
 465         LoadFile(event.GetFiles()[0]);
 466     }
 467 }
 468
 469 // The streambuf code was partly taken from chapter 3 by Jerry Schwarz of
 470 // AT&T's "C++ Lanuage System Release 3.0 Library Manual" - Stein Somers
 471
 472 //=========================================================================
 473 // Called then the buffer is full (gcc 2.6.3)
 474 // or when "endl" is output (Borland 4.5)
 475 //=========================================================================
 476 // Class declaration using multiple inheritance doesn't work properly for
 477 // Borland. See note in wb_text.h.
 478 #ifndef NO_TEXT_WINDOW_STREAM
 479 int wxTextCtrl::overflow(int c)
 480 {
 481   // Make sure there is a holding area
 482   if ( allocate()==EOF )
 483   {
 484     wxError("Streambuf allocation failed","Internal error");
 485     return EOF;
 486   }
 487
 488   // Verify that there are no characters in get area
 489   if ( gptr() && gptr() < egptr() )
 490   {
 491      wxError("wxTextCtrl::overflow: Who's trespassing my get area?","Internal error");
 492      return EOF;
 493   }
 494
 495   // Reset get area
 496   setg(0,0,0);
 497
 498   // Make sure there is a put area
 499   if ( ! pptr() )
 500   {
 501 /* This doesn't seem to be fatal so comment out error message */
 502 //    wxError("Put area not opened","Internal error");
 503     setp( base(), base() );
 504   }
 505
 506   // Determine how many characters have been inserted but no consumed
 507   int plen = pptr() - pbase();
 508
 509   // Now Jerry relies on the fact that the buffer is at least 2 chars
 510   // long, but the holding area "may be as small as 1" ???
 511   // And we need an additional \0, so let's keep this inefficient but
 512   // safe copy.
 513
 514   // If c!=EOF, it is a character that must also be comsumed
 515   int xtra = c==EOF? 0 : 1;
 516
 517   // Write temporary C-string to wxTextWindow
 518   {
 519   char *txt = new char[plen+xtra+1];
 520   memcpy(txt, pbase(), plen);
 521   txt[plen] = (char)c;     // append c
 522   txt[plen+xtra] = '\0';   // append '\0' or overwrite c
 523     // If the put area already contained \0, output will be truncated there
 524   WriteText(txt);
 525     delete[] txt;
 526   }
 527
 528   // Reset put area
 529   setp(pbase(), epptr());
 530
 531 #if defined(__WATCOMC__)
 532   return __NOT_EOF;
 533 #elif defined(zapeof)     // HP-UX (all cfront based?)
 534   return zapeof(c);
 535 #else
 536   return c!=EOF ? c : 0;  // this should make everybody happy
 537 #endif
 538 }
 539
 540 //=========================================================================
 541 // called then "endl" is output (gcc) or then explicit sync is done (Borland)
 542 //=========================================================================
 543 int wxTextCtrl::sync()
 544 {
 545   // Verify that there are no characters in get area
 546   if ( gptr() && gptr() < egptr() )
 547   {
 548      wxError("Who's trespassing my get area?","Internal error");
 549      return EOF;
 550   }
 551
 552   if ( pptr() && pptr() > pbase() ) return overflow(EOF);
 553
 554   return 0;
 555 /* OLD CODE
 556   int len = pptr() - pbase();
 557   char *txt = new char[len+1];
 558   strncpy(txt, pbase(), len);
 559   txt[len] = '\0';
 560   (*this) << txt;
 561   setp(pbase(), epptr());
 562   delete[] txt;
 563   return 0;
 564 */
 565 }
 566
 567 //=========================================================================
 568 // Should not be called by a "ostream". Used by a "istream"
 569 //=========================================================================
 570 int wxTextCtrl::underflow()
 571 {
 572   return EOF;
 573 }
 574 #endif
 575
 576 wxTextCtrl& wxTextCtrl::operator<<(const wxString& s)
 577 {
 578     WriteText(s);
 579     return *this;
 580 }
 581
 582 wxTextCtrl& wxTextCtrl::operator<<(float f)
 583 {
 584     wxString str;
 585     str.Printf("%.2f", f);
 586     WriteText(str);
 587     return *this;
 588 }
 589
 590 wxTextCtrl& wxTextCtrl::operator<<(double d)
 591 {
 592     wxString str;
 593     str.Printf("%.2f", d);
 594     WriteText(str);
 595     return *this;
 596 }
 597
 598 wxTextCtrl& wxTextCtrl::operator<<(int i)
 599 {
 600     wxString str;
 601     str.Printf("%d", i);
 602     WriteText(str);
 603     return *this;
 604 }
 605
 606 wxTextCtrl& wxTextCtrl::operator<<(long i)
 607 {
 608     wxString str;
 609     str.Printf("%ld", i);
 610     WriteText(str);
 611     return *this;
 612 }
 613
 614 wxTextCtrl& wxTextCtrl::operator<<(const char c)
 615 {
 616     char buf[2];
 617
 618     buf[0] = c;
 619     buf[1] = 0;
 620     WriteText(buf);
 621     return *this;
 622 }
 623
 624 void wxTextCtrl::OnChar(wxKeyEvent& event)
 625 {
 626   // Indicates that we should generate a normal command, because
 627   // we're letting default behaviour happen (otherwise it's vetoed
 628   // by virtue of overriding OnChar)
 629   m_processedDefault = TRUE;
 630
 631   if (m_tempCallbackStruct)
 632   {
 633     XmTextVerifyCallbackStruct *textStruct =
 634         (XmTextVerifyCallbackStruct *) m_tempCallbackStruct;
 635     textStruct->doit = True;
 636     if (isascii(event.m_keyCode) && (textStruct->text->length == 1))
 637     {
 638       textStruct->text->ptr[0] = ((event.m_keyCode == WXK_RETURN) ? 10 : event.m_keyCode);
 639     }
 640   }
 641 }
 642
 643 void wxTextCtrl::ChangeFont(bool keepOriginalSize)
 644 {
 645     wxWindow::ChangeFont(keepOriginalSize);
 646 }
 647
 648 void wxTextCtrl::ChangeBackgroundColour()
 649 {
 650     wxWindow::ChangeBackgroundColour();
 651
 652     Widget parent = XtParent ((Widget) m_mainWidget);
 653     Widget hsb, vsb;
 654
 655     XtVaGetValues (parent,
 656                      XmNhorizontalScrollBar, &hsb,
 657                      XmNverticalScrollBar, &vsb,
 658                      NULL);
 659
 660     /* TODO: should scrollbars be affected? Should probably have separate
 661      * function to change them (by default, taken from wxSystemSettings)
 662     if (hsb)
 663         DoChangeBackgroundColour((WXWidget) hsb, m_backgroundColour, TRUE);
 664     if (vsb)
 665         DoChangeBackgroundColour((WXWidget) vsb, m_backgroundColour, TRUE);
 666      */
 667
 668     DoChangeBackgroundColour((WXWidget) parent, m_backgroundColour, TRUE);
 669 }
 670
 671 void wxTextCtrl::ChangeForegroundColour()
 672 {
 673     wxWindow::ChangeForegroundColour();
 674
 675
 676     Widget parent = XtParent ((Widget) m_mainWidget);
 677     Widget hsb, vsb;
 678
 679     XtVaGetValues (parent,
 680                      XmNhorizontalScrollBar, &hsb,
 681                      XmNverticalScrollBar, &vsb,
 682                      NULL);
 683
 684     /* TODO: should scrollbars be affected? Should probably have separate
 685      * function to change them (by default, taken from wxSystemSettings)
 686     if (hsb)
 687         DoChangeForegroundColour((WXWidget) hsb, m_foregroundColour);
 688     if (vsb)
 689         DoChangeForegroundColour((WXWidget) vsb, m_foregroundColour);
 690      */
 691     DoChangeForegroundColour((WXWidget) parent, m_foregroundColour);
 692 }
 693
 694 static void wxTextWindowChangedProc (Widget w, XtPointer clientData, XtPointer ptr)
 695 {
 696   if (!wxGetWindowFromTable(w))
 697     // Widget has been deleted!
 698     return;
 699
 700   wxTextCtrl *tw = (wxTextCtrl *) clientData;
 701   tw->SetModified(TRUE);
 702 }
 703
 704 static void
 705 wxTextWindowModifyProc (Widget w, XtPointer clientData, XmTextVerifyCallbackStruct *cbs)
 706 {
 707     wxTextCtrl *tw = (wxTextCtrl *) clientData;
 708     tw->m_processedDefault = FALSE;
 709
 710     // First, do some stuff if it's a password control.
 711     // (What does this do exactly?)
 712
 713     if (tw->GetWindowStyleFlag() & wxTE_PASSWORD)
 714     {
 715       /* _sm_
 716        * At least on my system (SunOS 4.1.3 + Motif 1.2), you need to think of
 717        * every event as a replace event.  cbs->text->ptr gives the replacement
 718        * text, cbs->startPos gives the index of the first char affected by the
 719        * replace, and cbs->endPos gives the index one more than the last char
 720        * affected by the replace (startPos == endPos implies an empty range).
 721        * Hence, a deletion is represented by replacing all input text with a
 722        * blank string ("", *not* NULL!).  A simple insertion that does not
 723        * overwrite any text has startPos == endPos.
 724        */
 725
 726         if (tw->m_value.IsNull())
 727         {
 728             tw->m_value = cbs->text->ptr;
 729         }
 730         else
 731         {
 732             char * passwd = (char*) (const char*) tw->m_value;  // Set up a more convenient alias.
 733
 734             int len = passwd ? strlen(passwd) : 0; // Enough room for old text
 735             len += strlen(cbs->text->ptr) + 1;     // + new text (if any) + NUL
 736             len -= cbs->endPos - cbs->startPos;    // - text from affected region.
 737
 738             char * newS = new char [len];
 739             char * p = passwd, * dest = newS, * insert = cbs->text->ptr;
 740
 741             // Copy (old) text from passwd, up to the start posn of the change.
 742             int i;
 743             for (i = 0; i < cbs->startPos; ++i)
 744                 *dest++ = *p++;
 745
 746             // Copy the text to be inserted).
 747             while (*insert)
 748                *dest++ = *insert++;
 749
 750             // Finally, copy into newS any remaining text from passwd[endPos] on.
 751             for (p = passwd + cbs->endPos; *p; )
 752                 *dest++ = *p++;
 753             *dest = 0;
 754
 755             tw->m_value = newS;
 756
 757             delete[] newS;
 758         }
 759
 760         if (cbs->text->length>0)
 761         {
 762             int i;
 763             for (i = 0; i < cbs->text->length; ++i)
 764                 cbs->text->ptr[i] = '*';
 765             cbs->text->ptr[i] = 0;
 766         }
 767     }
 768
 769     // If we're already within an OnChar, return: probably
 770     // a programmatic insertion.
 771     if (tw->m_tempCallbackStruct)
 772         return;
 773
 774     // Check for a backspace
 775     if (cbs->startPos == (cbs->currInsert - 1))
 776     {
 777         tw->m_tempCallbackStruct = (void*) cbs;
 778
 779         wxKeyEvent event (wxEVT_CHAR);
 780         event.SetId(tw->GetId());
 781         event.m_keyCode = WXK_DELETE;
 782         event.SetEventObject(tw);
 783
 784         // Only if wxTextCtrl::OnChar is called
 785         // will this be set to True (and the character
 786         // passed through)
 787         cbs->doit = False;
 788
 789         tw->GetEventHandler()->ProcessEvent(event);
 790
 791         tw->m_tempCallbackStruct = NULL;
 792
 793         if (tw->InSetValue())
 794             return;
 795
 796         if (tw->m_processedDefault)
 797         {
 798             // Can generate a command
 799             wxCommandEvent commandEvent(wxEVT_COMMAND_TEXT_UPDATED, tw->GetId());
 800             commandEvent.SetEventObject(tw);
 801             tw->ProcessCommand(commandEvent);
 802         }
 803
 804         return;
 805     }
 806
 807     // Pasting operation: let it through without
 808     // calling OnChar
 809     if (cbs->text->length > 1)
 810         return;
 811
 812     // Something other than text
 813     if (cbs->text->ptr == NULL)
 814         return;
 815
 816     tw->m_tempCallbackStruct = (void*) cbs;
 817
 818     wxKeyEvent event (wxEVT_CHAR);
 819     event.SetId(tw->GetId());
 820     event.SetEventObject(tw);
 821     event.m_keyCode = (cbs->text->ptr[0] == 10 ? 13 : cbs->text->ptr[0]);
 822
 823     // Only if wxTextCtrl::OnChar is called
 824     // will this be set to True (and the character
 825     // passed through)
 826     cbs->doit = False;
 827
 828     tw->GetEventHandler()->ProcessEvent(event);
 829
 830     tw->m_tempCallbackStruct = NULL;
 831
 832     if (tw->InSetValue())
 833         return;
 834
 835     if (tw->m_processedDefault)
 836     {
 837         // Can generate a command
 838         wxCommandEvent commandEvent(wxEVT_COMMAND_TEXT_UPDATED, tw->GetId());
 839         commandEvent.SetEventObject(tw);
 840         tw->ProcessCommand(commandEvent);
 841     }
 842 }
 843
 844 static void
 845 wxTextWindowGainFocusProc (Widget w, XtPointer clientData, XmAnyCallbackStruct *cbs)
 846 {
 847   if (!wxGetWindowFromTable(w))
 848     return;
 849
 850   wxTextCtrl *tw = (wxTextCtrl *) clientData;
 851   wxFocusEvent event(wxEVT_SET_FOCUS, tw->GetId());
 852   event.SetEventObject(tw);
 853   tw->GetEventHandler()->ProcessEvent(event);
 854 }
 855
 856 static void
 857 wxTextWindowLoseFocusProc (Widget w, XtPointer clientData, XmAnyCallbackStruct *cbs)
 858 {
 859   if (!wxGetWindowFromTable(w))
 860     return;
 861
 862   wxTextCtrl *tw = (wxTextCtrl *) clientData;
 863   wxFocusEvent event(wxEVT_KILL_FOCUS, tw->GetId());
 864   event.SetEventObject(tw);
 865   tw->GetEventHandler()->ProcessEvent(event);
 866 }
 867
 868 static void wxTextWindowActivateProc(Widget w, XtPointer clientData,
 869                       XmAnyCallbackStruct *ptr)
 870 {
 871   if (!wxGetWindowFromTable(w))
 872     return;
 873
 874   wxTextCtrl *tw = (wxTextCtrl *) clientData;
 875   /*
 876   case XmCR_ACTIVATE:
 877     type_event = wxEVENT_TYPE_TEXT_ENTER_COMMAND ;
 878     break;
 879   default:
 880     type_event = wxEVENT_TYPE_TEXT_COMMAND ;
 881     break;
 882   }
 883   */
 884
 885   if (tw->InSetValue())
 886     return;
 887
 888   wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER);
 889   event.SetId(tw->GetId());
 890   event.SetEventObject(tw);
 891   tw->ProcessCommand(event);
 892 }