src/gtk/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        textctrl.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling, Vadim Zeitlin
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #ifdef __GNUG__
  11 #pragma implementation "textctrl.h"
  12 #endif
  13
  14 #include "wx/textctrl.h"
  15 #include "wx/utils.h"
  16 #include "wx/intl.h"
  17 #include "wx/settings.h"
  18
  19 #include <sys/types.h>
  20 #include <sys/stat.h>
  21 #include <ctype.h>
  22
  23 #include "gdk/gdk.h"
  24 #include "gtk/gtk.h"
  25 #include "gdk/gdkkeysyms.h"
  26
  27 //-----------------------------------------------------------------------------
  28 // idle system
  29 //-----------------------------------------------------------------------------
  30
  31 extern void wxapp_install_idle_handler();
  32 extern bool g_isIdle;
  33
  34 //-----------------------------------------------------------------------------
  35 // data
  36 //-----------------------------------------------------------------------------
  37
  38 extern bool   g_blockEventsOnDrag;
  39
  40 //-----------------------------------------------------------------------------
  41 //  "changed"
  42 //-----------------------------------------------------------------------------
  43
  44 static void
  45 gtk_text_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
  46 {
  47     if (!win->m_hasVMT) return;
  48
  49     if (g_isIdle)
  50         wxapp_install_idle_handler();
  51
  52     win->SetModified();
  53
  54     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->GetId() );
  55     event.SetString( win->GetValue() );
  56     event.SetEventObject( win );
  57     win->GetEventHandler()->ProcessEvent( event );
  58 }
  59
  60 //-----------------------------------------------------------------------------
  61 // "changed" from vertical scrollbar
  62 //-----------------------------------------------------------------------------
  63
  64 static void
  65 gtk_scrollbar_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
  66 {
  67     if (!win->m_hasVMT) return;
  68
  69     if (g_isIdle)
  70         wxapp_install_idle_handler();
  71
  72     win->CalculateScrollbar();
  73 }
  74
  75 //-----------------------------------------------------------------------------
  76 //  wxTextCtrl
  77 //-----------------------------------------------------------------------------
  78
  79 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl,wxControl)
  80
  81 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
  82     EVT_CHAR(wxTextCtrl::OnChar)
  83
  84     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
  85     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
  86     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
  87     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
  88     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
  89
  90     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
  91     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
  92     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
  93     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
  94     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
  95 END_EVENT_TABLE()
  96
  97 #ifndef NO_TEXT_WINDOW_STREAM
  98 wxTextCtrl::wxTextCtrl() : streambuf()
  99 {
 100     if (allocate()) setp(base(),ebuf());
 101
 102     m_modified = FALSE;
 103 }
 104 #else
 105 wxTextCtrl::wxTextCtrl()
 106 {
 107     m_modified = FALSE;
 108 }
 109 #endif
 110
 111 #ifndef NO_TEXT_WINDOW_STREAM
 112 wxTextCtrl::wxTextCtrl( wxWindow *parent, wxWindowID id, const wxString &value,
 113       const wxPoint &pos, const wxSize &size,
 114       int style, const wxValidator& validator, const wxString &name ) : streambuf()
 115 {
 116     if (allocate()) setp(base(),ebuf());
 117
 118     m_modified = FALSE;
 119     Create( parent, id, value, pos, size, style, validator, name );
 120 }
 121 #else
 122 wxTextCtrl::wxTextCtrl( wxWindow *parent, wxWindowID id, const wxString &value,
 123       const wxPoint &pos, const wxSize &size,
 124       int style, const wxValidator& validator, const wxString &name )
 125 {
 126     m_modified = FALSE;
 127     Create( parent, id, value, pos, size, style, validator, name );
 128 }
 129 #endif
 130
 131 bool wxTextCtrl::Create( wxWindow *parent, wxWindowID id, const wxString &value,
 132       const wxPoint &pos, const wxSize &size,
 133       int style, const wxValidator& validator, const wxString &name )
 134 {
 135     m_needParent = TRUE;
 136     m_acceptsFocus = TRUE;
 137
 138     PreCreation( parent, id, pos, size, style, name );
 139
 140 #if wxUSE_VALIDATORS
 141     SetValidator( validator );
 142 #endif // wxUSE_VALIDATORS
 143
 144     m_vScrollbarVisible = FALSE;
 145
 146     bool multi_line = (style & wxTE_MULTILINE) != 0;
 147     if (multi_line)
 148     {
 149         /* a multi-line edit control: create a vertical scrollbar by default and
 150            horizontal if requested */
 151         bool bHasHScrollbar = (style & wxHSCROLL) != 0;
 152
 153         /* create our control ... */
 154         m_text = gtk_text_new( (GtkAdjustment *) NULL, (GtkAdjustment *) NULL );
 155
 156         /* ... and put into the upper left hand corner of the table */
 157         m_widget = gtk_table_new(bHasHScrollbar ? 2 : 1, 2, FALSE);
 158         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 159         gtk_table_attach( GTK_TABLE(m_widget), m_text, 0, 1, 0, 1,
 160                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 161                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 162                        0, 0);
 163
 164         /* always wrap words */
 165         gtk_text_set_word_wrap( GTK_TEXT(m_text), TRUE );
 166
 167         /* put the horizontal scrollbar in the lower left hand corner */
 168         if (bHasHScrollbar)
 169         {
 170             GtkWidget *hscrollbar = gtk_hscrollbar_new(GTK_TEXT(m_text)->hadj);
 171             GTK_WIDGET_UNSET_FLAGS( hscrollbar, GTK_CAN_FOCUS );
 172             gtk_table_attach(GTK_TABLE(m_widget), hscrollbar, 0, 1, 1, 2,
 173                        (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
 174                        GTK_FILL,
 175                        0, 0);
 176             gtk_widget_show(hscrollbar);
 177
 178 #if (GTK_MINOR_VERSION > 0)
 179             /* don't wrap lines, otherwise we wouldn't need the scrollbar */
 180             gtk_text_set_line_wrap( GTK_TEXT(m_text), FALSE );
 181 #endif
 182         }
 183
 184         /* finally, put the vertical scrollbar in the upper right corner */
 185         m_vScrollbar = gtk_vscrollbar_new( GTK_TEXT(m_text)->vadj );
 186         GTK_WIDGET_UNSET_FLAGS( m_vScrollbar, GTK_CAN_FOCUS );
 187         gtk_table_attach(GTK_TABLE(m_widget), m_vScrollbar, 1, 2, 0, 1,
 188                      GTK_FILL,
 189                      (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
 190                      0, 0);
 191     }
 192     else
 193     {
 194         /* a single-line text control: no need for scrollbars */
 195         m_widget =
 196           m_text = gtk_entry_new();
 197     }
 198
 199     wxSize newSize = size;
 200     if (newSize.x == -1) newSize.x = 80;
 201     if (newSize.y == -1) newSize.y = 26;
 202     SetSize( newSize.x, newSize.y );
 203
 204     m_parent->DoAddChild( this );
 205
 206     PostCreation();
 207
 208     if (multi_line)
 209         gtk_widget_show(m_text);
 210
 211     /* we want to be notified about text changes */
 212     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 213       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 214
 215     if (multi_line)
 216     {
 217         gtk_signal_connect(GTK_OBJECT(GTK_TEXT(m_text)->vadj), "changed",
 218           (GtkSignalFunc) gtk_scrollbar_changed_callback, (gpointer) this );
 219     }
 220
 221     if (!value.IsEmpty())
 222     {
 223         gint tmp = 0;
 224
 225 #if GTK_MINOR_VERSION == 0
 226         // if we don't realize it, GTK 1.0.6 dies with a SIGSEGV in
 227         // gtk_editable_insert_text()
 228         gtk_widget_realize(m_text);
 229 #endif // GTK 1.0
 230
 231 #if wxUSE_UNICODE
 232         wxWX2MBbuf val = value.mbc_str();
 233         gtk_editable_insert_text( GTK_EDITABLE(m_text), val, strlen(val), &tmp );
 234 #else // !Unicode
 235         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &tmp );
 236 #endif // Unicode/!Unicode
 237
 238         if (multi_line)
 239         {
 240             /* bring editable's cursor uptodate. bug in GTK. */
 241
 242             GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 243         }
 244     }
 245
 246     if (style & wxTE_PASSWORD)
 247     {
 248         if (!multi_line)
 249             gtk_entry_set_visibility( GTK_ENTRY(m_text), FALSE );
 250     }
 251
 252     if (style & wxTE_READONLY)
 253     {
 254         if (!multi_line)
 255             gtk_entry_set_editable( GTK_ENTRY(m_text), FALSE );
 256     }
 257     else
 258     {
 259         if (multi_line)
 260             gtk_text_set_editable( GTK_TEXT(m_text), 1 );
 261     }
 262
 263     SetBackgroundColour( wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW) );
 264     SetForegroundColour( parent->GetForegroundColour() );
 265
 266     Show( TRUE );
 267
 268     return TRUE;
 269 }
 270
 271 void wxTextCtrl::CalculateScrollbar()
 272 {
 273     if ((m_windowStyle & wxTE_MULTILINE) == 0) return;
 274
 275     GtkAdjustment *adj = GTK_TEXT(m_text)->vadj;
 276
 277     if (adj->upper - adj->page_size < 0.8)
 278     {
 279         if (m_vScrollbarVisible)
 280         {
 281             gtk_widget_hide( m_vScrollbar );
 282             m_vScrollbarVisible = FALSE;
 283         }
 284     }
 285     else
 286     {
 287         if (!m_vScrollbarVisible)
 288         {
 289             gtk_widget_show( m_vScrollbar );
 290             m_vScrollbarVisible = TRUE;
 291         }
 292     }
 293 }
 294
 295 wxString wxTextCtrl::GetValue() const
 296 {
 297     wxCHECK_MSG( m_text != NULL, _T(""), _T("invalid text ctrl") );
 298
 299     wxString tmp;
 300     if (m_windowStyle & wxTE_MULTILINE)
 301     {
 302         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 303         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 304         tmp = wxString(text,*wxConv_current);
 305         g_free( text );
 306     }
 307     else
 308     {
 309         tmp = wxString(gtk_entry_get_text( GTK_ENTRY(m_text) ),*wxConv_current);
 310     }
 311     return tmp;
 312 }
 313
 314 void wxTextCtrl::SetValue( const wxString &value )
 315 {
 316     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 317
 318     gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 319       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 320
 321     wxString tmp = _T("");
 322     if (!value.IsNull()) tmp = value;
 323     if (m_windowStyle & wxTE_MULTILINE)
 324     {
 325         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 326         gtk_editable_delete_text( GTK_EDITABLE(m_text), 0, len );
 327         len = 0;
 328 #if wxUSE_UNICODE
 329         wxWX2MBbuf tmpbuf = tmp.mbc_str();
 330         gtk_editable_insert_text( GTK_EDITABLE(m_text), tmpbuf, strlen(tmpbuf), &len );
 331 #else
 332         gtk_editable_insert_text( GTK_EDITABLE(m_text), tmp.mbc_str(), tmp.Length(), &len );
 333 #endif
 334     }
 335     else
 336     {
 337         gtk_entry_set_text( GTK_ENTRY(m_text), tmp.mbc_str() );
 338     }
 339
 340     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 341       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 342 }
 343
 344 void wxTextCtrl::WriteText( const wxString &text )
 345 {
 346     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 347
 348     if (text.IsNull()) return;
 349
 350     if (m_windowStyle & wxTE_MULTILINE)
 351     {
 352         /* this moves the cursor pos to behind the inserted text */
 353         gint len = GTK_EDITABLE(m_text)->current_pos;
 354
 355 #if wxUSE_UNICODE
 356         wxWX2MBbuf buf = text.mbc_str();
 357         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &len );
 358 #else
 359         gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
 360 #endif
 361
 362         /* bring editable's cursor uptodate. bug in GTK. */
 363         GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 364     }
 365     else
 366     {
 367         /* this moves the cursor pos to behind the inserted text */
 368         gint len = GTK_EDITABLE(m_text)->current_pos;
 369 #if wxUSE_UNICODE
 370         wxWX2MBbuf buf = text.mbc_str();
 371         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &len );
 372 #else
 373         gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
 374 #endif
 375
 376         /* bring editable's cursor uptodate. bug in GTK. */
 377         GTK_EDITABLE(m_text)->current_pos += text.Len();
 378
 379         /* bring entry's cursor uptodate. bug in GTK. */
 380         gtk_entry_set_position( GTK_ENTRY(m_text), GTK_EDITABLE(m_text)->current_pos );
 381     }
 382 }
 383
 384 void wxTextCtrl::AppendText( const wxString &text )
 385 {
 386     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 387
 388     if (m_windowStyle & wxTE_MULTILINE)
 389     {
 390         /* we'll insert at the last position */
 391         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 392 #if wxUSE_UNICODE
 393         wxWX2MBbuf buf = text.mbc_str();
 394         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &len );
 395 #else
 396         gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
 397 #endif
 398
 399         /* bring editable's cursor uptodate. bug in GTK. */
 400         GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 401     }
 402     else
 403     {
 404         gtk_entry_append_text( GTK_ENTRY(m_text), text.mbc_str() );
 405     }
 406 }
 407
 408 bool wxTextCtrl::LoadFile( const wxString &file )
 409 {
 410   wxCHECK_MSG( m_text != NULL, FALSE, _T("invalid text ctrl") );
 411
 412   if (!wxFileExists(file)) return FALSE;
 413
 414   Clear();
 415
 416   FILE *fp = (FILE*) NULL;
 417   struct stat statb;
 418
 419   if ((stat (FNSTRINGCAST file.fn_str(), &statb) == -1) || (statb.st_mode & S_IFMT) != S_IFREG ||
 420       !(fp = fopen (FNSTRINGCAST file.fn_str(), "r")))
 421   {
 422       return FALSE;
 423   }
 424   else
 425   {
 426     gint len = statb.st_size;
 427     char *text;
 428     if (!(text = (char*)malloc ((unsigned) (len + 1))))
 429     {
 430       fclose (fp);
 431       return FALSE;
 432     }
 433     if (fread (text, sizeof (char), len, fp) != (size_t) len)
 434     {
 435     }
 436     fclose (fp);
 437
 438     text[len] = 0;
 439
 440     if (m_windowStyle & wxTE_MULTILINE)
 441     {
 442       gint pos = 0;
 443       gtk_editable_insert_text( GTK_EDITABLE(m_text), text, len, &pos );
 444     }
 445     else
 446     {
 447       gtk_entry_set_text( GTK_ENTRY(m_text), text );
 448     }
 449
 450     free (text);
 451     m_modified = FALSE;
 452     return TRUE;
 453   }
 454   return FALSE;
 455 }
 456
 457 bool wxTextCtrl::SaveFile( const wxString &file )
 458 {
 459   wxCHECK_MSG( m_text != NULL, FALSE, _T("invalid text ctrl") );
 460
 461   if (file == _T("")) return FALSE;
 462
 463   FILE *fp;
 464
 465   if (!(fp = fopen (FNSTRINGCAST file.fn_str(), "w")))
 466     {
 467       return FALSE;
 468     }
 469   else
 470     {
 471       char *text = (char*) NULL;
 472       gint len = 0;
 473
 474       if (m_windowStyle & wxTE_MULTILINE)
 475       {
 476         len = gtk_text_get_length( GTK_TEXT(m_text) );
 477         text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 478       }
 479       else
 480       {
 481         text = gtk_entry_get_text( GTK_ENTRY(m_text) );
 482       }
 483
 484       if (fwrite (text, sizeof (char), len, fp) != (size_t) len)
 485       {
 486           // Did not write whole file
 487       }
 488
 489       // Make sure newline terminates the file
 490       if (text[len - 1] != '\n')
 491           fputc ('\n', fp);
 492
 493       fclose (fp);
 494
 495       if (m_windowStyle & wxTE_MULTILINE) g_free( text );
 496
 497       m_modified = FALSE;
 498       return TRUE;
 499     }
 500
 501   return TRUE;
 502 }
 503
 504 wxString wxTextCtrl::GetLineText( long lineNo ) const
 505 {
 506   if (m_windowStyle & wxTE_MULTILINE)
 507   {
 508     gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 509     char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 510
 511     if (text)
 512     {
 513         wxString buf(_T(""));
 514         long i;
 515         int currentLine = 0;
 516         for (i = 0; currentLine != lineNo && text[i]; i++ )
 517           if (text[i] == '\n')
 518             currentLine++;
 519         // Now get the text
 520         int j;
 521         for (j = 0; text[i] && text[i] != '\n'; i++, j++ )
 522             buf += text[i];
 523
 524         g_free( text );
 525         return buf;
 526     }
 527     else
 528       return wxEmptyString;
 529   }
 530   else
 531   {
 532     if (lineNo == 0) return GetValue();
 533     return wxEmptyString;
 534   }
 535 }
 536
 537 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 538 {
 539   /* If you implement this, don't forget to update the documentation!
 540    * (file docs/latex/wx/text.tex) */
 541     wxFAIL_MSG( _T("wxTextCtrl::OnDropFiles not implemented") );
 542 }
 543
 544 long wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
 545 {
 546     if ( m_windowStyle & wxTE_MULTILINE )
 547     {
 548         wxString text = GetValue();
 549
 550         // cast to prevent warning. But pos really should've been unsigned.
 551         if( (unsigned long)pos > text.Len()  )
 552             return FALSE;
 553
 554         *x=0;   // First Col
 555         *y=0;   // First Line
 556
 557         const wxChar* stop = text.c_str() + pos;
 558         for ( const wxChar *p = text.c_str(); p < stop; p++ )
 559         {
 560             if (*p == _T('\n'))
 561             {
 562                 (*y)++;
 563                 *x=0;
 564             }
 565             else
 566                 (*x)++;
 567         }
 568     }
 569     else // single line control
 570     {
 571         if ( pos <= GTK_ENTRY(m_text)->text_length )
 572         {
 573             *y = 0;
 574             *x = pos;
 575         }
 576         else
 577         {
 578             // index out of bounds
 579             return FALSE;
 580         }
 581     }
 582
 583     return TRUE;
 584 }
 585
 586 long wxTextCtrl::XYToPosition(long x, long y ) const
 587 {
 588     if (!(m_windowStyle & wxTE_MULTILINE)) return 0;
 589
 590     long pos=0;
 591     for( int i=0; i<y; i++ ) pos += GetLineLength(i) + 1; // one for '\n'
 592
 593     pos += x;
 594     return pos;
 595 }
 596
 597 int wxTextCtrl::GetLineLength(long lineNo) const
 598 {
 599     wxString str = GetLineText (lineNo);
 600     return (int) str.Length();
 601 }
 602
 603 int wxTextCtrl::GetNumberOfLines() const
 604 {
 605     if (m_windowStyle & wxTE_MULTILINE)
 606     {
 607         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 608         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 609
 610         if (text)
 611         {
 612             int currentLine = 0;
 613             for (int i = 0; i < len; i++ )
 614             {
 615                 if (text[i] == '\n')
 616                     currentLine++;
 617             }
 618             g_free( text );
 619
 620             // currentLine is 0 based, add 1 to get number of lines
 621             return currentLine + 1;
 622         }
 623         else
 624         {
 625             return 0;
 626         }
 627     }
 628     else
 629     {
 630         return 1;
 631     }
 632 }
 633
 634 void wxTextCtrl::SetInsertionPoint( long pos )
 635 {
 636     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 637
 638     if (m_windowStyle & wxTE_MULTILINE)
 639     {
 640         /* seems to be broken in GTK 1.0.X:
 641            gtk_text_set_point( GTK_TEXT(m_text), (int)pos ); */
 642
 643         gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 644           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 645
 646         /* we fake a set_point by inserting and deleting. as the user
 647            isn't supposed to get to know about thos non-sense, we
 648            disconnect so that no events are sent to the user program. */
 649
 650         gint tmp = (gint)pos;
 651         gtk_editable_insert_text( GTK_EDITABLE(m_text), " ", 1, &tmp );
 652         gtk_editable_delete_text( GTK_EDITABLE(m_text), tmp-1, tmp );
 653
 654         gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 655           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 656
 657         /* bring editable's cursor uptodate. another bug in GTK. */
 658
 659         GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 660     }
 661     else
 662     {
 663         gtk_entry_set_position( GTK_ENTRY(m_text), (int)pos );
 664
 665         /* bring editable's cursor uptodate. bug in GTK. */
 666
 667         GTK_EDITABLE(m_text)->current_pos = pos;
 668     }
 669 }
 670
 671 void wxTextCtrl::SetInsertionPointEnd()
 672 {
 673     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 674
 675     if (m_windowStyle & wxTE_MULTILINE)
 676         SetInsertionPoint(gtk_text_get_length(GTK_TEXT(m_text)));
 677     else
 678         gtk_entry_set_position( GTK_ENTRY(m_text), -1 );
 679 }
 680
 681 void wxTextCtrl::SetEditable( bool editable )
 682 {
 683     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 684
 685     if (m_windowStyle & wxTE_MULTILINE)
 686         gtk_text_set_editable( GTK_TEXT(m_text), editable );
 687     else
 688         gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
 689 }
 690
 691 void wxTextCtrl::SetSelection( long from, long to )
 692 {
 693     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 694
 695     gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 696 }
 697
 698 void wxTextCtrl::ShowPosition( long WXUNUSED(pos) )
 699 {
 700 //    SetInsertionPoint( pos );
 701 }
 702
 703 long wxTextCtrl::GetInsertionPoint() const
 704 {
 705     wxCHECK_MSG( m_text != NULL, 0, _T("invalid text ctrl") );
 706
 707     return (long) GTK_EDITABLE(m_text)->current_pos;
 708 }
 709
 710 long wxTextCtrl::GetLastPosition() const
 711 {
 712     wxCHECK_MSG( m_text != NULL, 0, _T("invalid text ctrl") );
 713
 714     int pos = 0;
 715     if (m_windowStyle & wxTE_MULTILINE)
 716         pos = gtk_text_get_length( GTK_TEXT(m_text) );
 717     else
 718         pos = GTK_ENTRY(m_text)->text_length;
 719
 720     return (long)pos;
 721 }
 722
 723 void wxTextCtrl::Remove( long from, long to )
 724 {
 725     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 726
 727     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 728 }
 729
 730 void wxTextCtrl::Replace( long from, long to, const wxString &value )
 731 {
 732     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 733
 734     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 735     if (value.IsNull()) return;
 736     gint pos = (gint)from;
 737 #if wxUSE_UNICODE
 738     wxWX2MBbuf buf = value.mbc_str();
 739     gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &pos );
 740 #else
 741     gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &pos );
 742 #endif
 743 }
 744
 745 void wxTextCtrl::Cut()
 746 {
 747     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 748
 749 #if (GTK_MINOR_VERSION > 0)
 750     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text) );
 751 #else
 752     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text), 0 );
 753 #endif
 754 }
 755
 756 void wxTextCtrl::Copy()
 757 {
 758     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 759
 760 #if (GTK_MINOR_VERSION > 0)
 761     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text) );
 762 #else
 763     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text), 0 );
 764 #endif
 765 }
 766
 767 void wxTextCtrl::Paste()
 768 {
 769     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 770
 771 #if (GTK_MINOR_VERSION > 0)
 772     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text) );
 773 #else
 774     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text), 0 );
 775 #endif
 776 }
 777
 778 bool wxTextCtrl::CanCopy() const
 779 {
 780     // Can copy if there's a selection
 781     long from, to;
 782     GetSelection(& from, & to);
 783     return (from != to) ;
 784 }
 785
 786 bool wxTextCtrl::CanCut() const
 787 {
 788     // Can cut if there's a selection
 789     long from, to;
 790     GetSelection(& from, & to);
 791     return (from != to) ;
 792 }
 793
 794 bool wxTextCtrl::CanPaste() const
 795 {
 796     return IsEditable() ;
 797 }
 798
 799 // Undo/redo
 800 void wxTextCtrl::Undo()
 801 {
 802     // TODO
 803     wxFAIL_MSG( _T("wxTextCtrl::Undo not implemented") );
 804 }
 805
 806 void wxTextCtrl::Redo()
 807 {
 808     // TODO
 809     wxFAIL_MSG( _T("wxTextCtrl::Redo not implemented") );
 810 }
 811
 812 bool wxTextCtrl::CanUndo() const
 813 {
 814     // TODO
 815     wxFAIL_MSG( _T("wxTextCtrl::CanUndo not implemented") );
 816     return FALSE;
 817 }
 818
 819 bool wxTextCtrl::CanRedo() const
 820 {
 821     // TODO
 822     wxFAIL_MSG( _T("wxTextCtrl::CanRedo not implemented") );
 823     return FALSE;
 824 }
 825
 826 // If the return values from and to are the same, there is no
 827 // selection.
 828 void wxTextCtrl::GetSelection(long* from, long* to) const
 829 {
 830     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 831
 832     if (!(GTK_EDITABLE(m_text)->has_selection))
 833     {
 834         if (from) *from = 0;
 835         if (to)   *to = 0;
 836         return;
 837     }
 838
 839     if (from) *from = (long) GTK_EDITABLE(m_text)->selection_start_pos;
 840     if (to)   *to = (long) GTK_EDITABLE(m_text)->selection_end_pos;
 841 }
 842
 843 bool wxTextCtrl::IsEditable() const
 844 {
 845     wxCHECK_MSG( m_text != NULL, FALSE, _T("invalid text ctrl") );
 846
 847     return GTK_EDITABLE(m_text)->editable;
 848 }
 849
 850 void wxTextCtrl::Clear()
 851 {
 852     SetValue( _T("") );
 853 }
 854
 855 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
 856 {
 857     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 858
 859     if ((key_event.KeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
 860     {
 861         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
 862         event.SetEventObject(this);
 863         if (GetEventHandler()->ProcessEvent(event)) return;
 864     }
 865
 866     key_event.Skip();
 867 }
 868
 869 #ifndef NO_TEXT_WINDOW_STREAM
 870 int wxTextCtrl::overflow( int WXUNUSED(c) )
 871 {
 872     int len = pptr() - pbase();
 873     char *txt = new char[len+1];
 874     strncpy(txt, pbase(), len);
 875     txt[len] = '\0';
 876     (*this) << txt;
 877     setp(pbase(), epptr());
 878     delete[] txt;
 879     return EOF;
 880 }
 881
 882 int wxTextCtrl::sync()
 883 {
 884     int len = pptr() - pbase();
 885     char *txt = new char[len+1];
 886     strncpy(txt, pbase(), len);
 887     txt[len] = '\0';
 888     (*this) << txt;
 889     setp(pbase(), epptr());
 890     delete[] txt;
 891     return 0;
 892 }
 893
 894 int wxTextCtrl::underflow()
 895 {
 896     return EOF;
 897 }
 898
 899 wxTextCtrl& wxTextCtrl::operator<<(const wxString& s)
 900 {
 901     AppendText(s);
 902     return *this;
 903 }
 904
 905 wxTextCtrl& wxTextCtrl::operator<<(float f)
 906 {
 907     static char buf[100];
 908     sprintf(buf, "%.2f", f);
 909     AppendText(buf);
 910     return *this;
 911 }
 912
 913 wxTextCtrl& wxTextCtrl::operator<<(double d)
 914 {
 915     static char buf[100];
 916     sprintf(buf, "%.2f", d);
 917     AppendText(buf);
 918     return *this;
 919 }
 920
 921 wxTextCtrl& wxTextCtrl::operator<<(int i)
 922 {
 923     static char buf[100];
 924     sprintf(buf, "%i", i);
 925     AppendText(buf);
 926     return *this;
 927 }
 928
 929 wxTextCtrl& wxTextCtrl::operator<<(long i)
 930 {
 931     static char buf[100];
 932     sprintf(buf, "%ld", i);
 933     AppendText(buf);
 934     return *this;
 935 }
 936
 937 wxTextCtrl& wxTextCtrl::operator<<(const char c)
 938 {
 939     char buf[2];
 940
 941     buf[0] = c;
 942     buf[1] = 0;
 943     AppendText(buf);
 944     return *this;
 945 }
 946 #endif
 947
 948 GtkWidget* wxTextCtrl::GetConnectWidget()
 949 {
 950     return GTK_WIDGET(m_text);
 951 }
 952
 953 bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
 954 {
 955     if (m_windowStyle & wxTE_MULTILINE)
 956         return (window == GTK_TEXT(m_text)->text_area);
 957     else
 958         return (window == GTK_ENTRY(m_text)->text_area);
 959 }
 960
 961 bool wxTextCtrl::SetFont( const wxFont &WXUNUSED(font) )
 962 {
 963     wxCHECK_MSG( m_text != NULL, FALSE, _T("invalid text ctrl") );
 964
 965     // doesn't work
 966     return FALSE;
 967 }
 968
 969 bool wxTextCtrl::SetForegroundColour( const wxColour &WXUNUSED(colour) )
 970 {
 971     wxCHECK_MSG( m_text != NULL, FALSE, _T("invalid text ctrl") );
 972
 973     // doesn't work
 974     return FALSE;
 975 }
 976
 977 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
 978 {
 979     wxCHECK_MSG( m_text != NULL, FALSE, _T("invalid text ctrl") );
 980
 981     wxControl::SetBackgroundColour( colour );
 982
 983     if (!m_widget->window)
 984         return FALSE;
 985
 986     wxColour sysbg = wxSystemSettings::GetSystemColour( wxSYS_COLOUR_BTNFACE );
 987     if (sysbg.Red() == colour.Red() &&
 988         sysbg.Green() == colour.Green() &&
 989         sysbg.Blue() == colour.Blue())
 990     {
 991         return FALSE; // FIXME or TRUE?
 992     }
 993
 994     if (!m_backgroundColour.Ok())
 995         return FALSE;
 996
 997     if (m_windowStyle & wxTE_MULTILINE)
 998     {
 999         GdkWindow *window = GTK_TEXT(m_text)->text_area;
1000         if (!window)
1001             return FALSE;
1002         m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
1003         gdk_window_set_background( window, m_backgroundColour.GetColor() );
1004         gdk_window_clear( window );
1005     }
1006
1007     return TRUE;
1008 }
1009
1010 void wxTextCtrl::ApplyWidgetStyle()
1011 {
1012     if (m_windowStyle & wxTE_MULTILINE)
1013     {
1014         // how ?
1015     }
1016     else
1017     {
1018         SetWidgetStyle();
1019         gtk_widget_set_style( m_text, m_widgetStyle );
1020     }
1021 }
1022
1023 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1024 {
1025     Cut();
1026 }
1027
1028 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1029 {
1030     Copy();
1031 }
1032
1033 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1034 {
1035     Paste();
1036 }
1037
1038 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1039 {
1040     Undo();
1041 }
1042
1043 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1044 {
1045     Redo();
1046 }
1047
1048 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1049 {
1050     event.Enable( CanCut() );
1051 }
1052
1053 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1054 {
1055     event.Enable( CanCopy() );
1056 }
1057
1058 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1059 {
1060     event.Enable( CanPaste() );
1061 }
1062
1063 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1064 {
1065     event.Enable( CanUndo() );
1066 }
1067
1068 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1069 {
1070     event.Enable( CanRedo() );
1071 }