src/gtk1/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 // data
  29 //-----------------------------------------------------------------------------
  30
  31 extern bool   g_blockEventsOnDrag;
  32
  33 //-----------------------------------------------------------------------------
  34 //  "changed"
  35 //-----------------------------------------------------------------------------
  36
  37 static void
  38 gtk_text_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
  39 {
  40     win->SetModified();
  41
  42     win->CalculateScrollbar();
  43
  44     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->m_windowId );
  45     event.SetString( win->GetValue() );
  46     event.SetEventObject( win );
  47     win->GetEventHandler()->ProcessEvent( event );
  48 }
  49
  50 //-----------------------------------------------------------------------------
  51 // "size_allocate"
  52 //-----------------------------------------------------------------------------
  53
  54 static void
  55 gtk_text_size_callback( GtkWidget *WXUNUSED(widget), GtkAllocation* WXUNUSED(alloc), wxTextCtrl *win )
  56 {
  57     win->CalculateScrollbar();
  58 }
  59
  60 //-----------------------------------------------------------------------------
  61 //  wxTextCtrl
  62 //-----------------------------------------------------------------------------
  63
  64 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl,wxControl)
  65
  66 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
  67     EVT_CHAR(wxTextCtrl::OnChar)
  68
  69     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
  70     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
  71     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
  72     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
  73     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
  74
  75     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
  76     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
  77     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
  78     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
  79     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
  80 END_EVENT_TABLE()
  81
  82 #ifndef NO_TEXT_WINDOW_STREAM
  83 wxTextCtrl::wxTextCtrl() : streambuf()
  84 {
  85     if (allocate()) setp(base(),ebuf());
  86
  87     m_modified = FALSE;
  88 }
  89 #else
  90 wxTextCtrl::wxTextCtrl()
  91 {
  92     m_modified = FALSE;
  93 }
  94 #endif
  95
  96 #ifndef NO_TEXT_WINDOW_STREAM
  97 wxTextCtrl::wxTextCtrl( wxWindow *parent, wxWindowID id, const wxString &value,
  98       const wxPoint &pos, const wxSize &size,
  99       int style, const wxValidator& validator, const wxString &name ) : streambuf()
 100 {
 101     if (allocate()) setp(base(),ebuf());
 102
 103     m_modified = FALSE;
 104     Create( parent, id, value, pos, size, style, validator, name );
 105 }
 106 #else
 107 wxTextCtrl::wxTextCtrl( wxWindow *parent, wxWindowID id, const wxString &value,
 108       const wxPoint &pos, const wxSize &size,
 109       int style, const wxValidator& validator, const wxString &name )
 110 {
 111     m_modified = FALSE;
 112     Create( parent, id, value, pos, size, style, validator, name );
 113 }
 114 #endif
 115
 116 bool wxTextCtrl::Create( wxWindow *parent, wxWindowID id, const wxString &value,
 117       const wxPoint &pos, const wxSize &size,
 118       int style, const wxValidator& validator, const wxString &name )
 119 {
 120     m_needParent = TRUE;
 121     m_acceptsFocus = TRUE;
 122
 123     PreCreation( parent, id, pos, size, style, name );
 124
 125     SetValidator( validator );
 126
 127     m_vScrollbarVisible = TRUE;
 128
 129     bool multi_line = (style & wxTE_MULTILINE) != 0;
 130     if ( multi_line )
 131     {
 132         // a multi-line edit control: create a vertical scrollbar by default and
 133         // horizontal if requested
 134         bool bHasHScrollbar = (style & wxHSCROLL) != 0;
 135
 136         // create our control...
 137         m_text = gtk_text_new( (GtkAdjustment *) NULL, (GtkAdjustment *) NULL );
 138
 139         // ... and put into the upper left hand corner of the table
 140         m_widget = gtk_table_new(bHasHScrollbar ? 2 : 1, 2, FALSE);
 141         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 142
 143         gtk_table_attach( GTK_TABLE(m_widget), m_text, 0, 1, 0, 1,
 144                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 145                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 146                        0, 0);
 147
 148         // put the horizontal scrollbar in the lower left hand corner
 149         if (bHasHScrollbar)
 150         {
 151             GtkWidget *hscrollbar = gtk_hscrollbar_new(GTK_TEXT(m_text)->hadj);
 152             GTK_WIDGET_UNSET_FLAGS( hscrollbar, GTK_CAN_FOCUS );
 153
 154             gtk_table_attach(GTK_TABLE(m_widget), hscrollbar, 0, 1, 1, 2,
 155                        (GtkAttachOptions)(GTK_EXPAND | GTK_FILL),
 156                        GTK_FILL,
 157                        0, 0);
 158             gtk_widget_show(hscrollbar);
 159         }
 160
 161         // finally, put the vertical scrollbar in the upper right corner
 162         m_vScrollbar = gtk_vscrollbar_new( GTK_TEXT(m_text)->vadj );
 163         GTK_WIDGET_UNSET_FLAGS( m_vScrollbar, GTK_CAN_FOCUS );
 164
 165         gtk_table_attach(GTK_TABLE(m_widget), m_vScrollbar, 1, 2, 0, 1,
 166                      GTK_FILL,
 167                      (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
 168                      0, 0);
 169         gtk_widget_show( m_vScrollbar );
 170
 171         gtk_signal_connect( GTK_OBJECT(m_widget), "size_allocate",
 172           GTK_SIGNAL_FUNC(gtk_text_size_callback), (gpointer)this );
 173     }
 174     else
 175     {
 176         // a single-line text control: no need for scrollbars
 177         m_widget =
 178           m_text = gtk_entry_new();
 179     }
 180
 181     wxSize newSize = size;
 182     if (newSize.x == -1) newSize.x = 80;
 183     if (newSize.y == -1) newSize.y = 26;
 184     SetSize( newSize.x, newSize.y );
 185
 186     m_parent->AddChild( this );
 187
 188     (m_parent->m_insertCallback)( m_parent, this );
 189
 190     PostCreation();
 191
 192     if (multi_line)
 193     {
 194         gtk_widget_realize(m_text);
 195         gtk_widget_show(m_text);
 196     }
 197
 198     // we want to be notified about text changes
 199     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 200       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 201
 202     if (!value.IsEmpty())
 203     {
 204         gint tmp = 0;
 205         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &tmp );
 206
 207         if (multi_line)
 208         {
 209             /* bring editable's cursor uptodate. bug in GTK. */
 210
 211             GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 212         }
 213     }
 214
 215     if (style & wxTE_PASSWORD)
 216     {
 217         if (!multi_line)
 218             gtk_entry_set_visibility( GTK_ENTRY(m_text), FALSE );
 219     }
 220
 221     if (style & wxTE_READONLY)
 222     {
 223         if (!multi_line)
 224             gtk_entry_set_editable( GTK_ENTRY(m_text), FALSE );
 225     }
 226     else
 227     {
 228         if (multi_line)
 229             gtk_text_set_editable( GTK_TEXT(m_text), 1 );
 230     }
 231
 232     Show( TRUE );
 233
 234     SetBackgroundColour( parent->GetBackgroundColour() );
 235     SetForegroundColour( parent->GetForegroundColour() );
 236
 237     return TRUE;
 238 }
 239
 240 void wxTextCtrl::CalculateScrollbar()
 241 {
 242     if ((m_windowStyle & wxTE_MULTILINE) == 0) return;
 243
 244     GtkAdjustment *adj = GTK_TEXT(m_text)->vadj;
 245
 246     if (adj->upper - adj->page_size < 0.8)
 247     {
 248         if (m_vScrollbarVisible)
 249         {
 250         gtk_widget_hide( m_vScrollbar );
 251
 252         m_vScrollbarVisible = FALSE;
 253         }
 254     }
 255     else
 256     {
 257         if (!m_vScrollbarVisible)
 258         {
 259         gtk_widget_show( m_vScrollbar );
 260
 261         m_vScrollbarVisible = TRUE;
 262         }
 263     }
 264 }
 265
 266 wxString wxTextCtrl::GetValue() const
 267 {
 268     wxCHECK_MSG( m_text != NULL, "", "invalid text ctrl" );
 269
 270     wxString tmp;
 271     if (m_windowStyle & wxTE_MULTILINE)
 272     {
 273         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 274         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 275         tmp = text;
 276         g_free( text );
 277     }
 278     else
 279     {
 280         tmp = gtk_entry_get_text( GTK_ENTRY(m_text) );
 281     }
 282     return tmp;
 283 }
 284
 285 void wxTextCtrl::SetValue( const wxString &value )
 286 {
 287     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 288
 289     wxString tmp = "";
 290     if (!value.IsNull()) tmp = value;
 291     if (m_windowStyle & wxTE_MULTILINE)
 292     {
 293         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 294         gtk_editable_delete_text( GTK_EDITABLE(m_text), 0, len );
 295         len = 0;
 296         gtk_editable_insert_text( GTK_EDITABLE(m_text), tmp, tmp.Length(), &len );
 297     }
 298     else
 299     {
 300         gtk_entry_set_text( GTK_ENTRY(m_text), tmp );
 301     }
 302 }
 303
 304 void wxTextCtrl::WriteText( const wxString &text )
 305 {
 306     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 307
 308     if (text.IsNull()) return;
 309
 310     if (m_windowStyle & wxTE_MULTILINE)
 311     {
 312         /* this moves the cursor pos to behind the inserted text */
 313         gint len = GTK_EDITABLE(m_text)->current_pos;
 314
 315         gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
 316
 317         /* bring editable's cursor uptodate. bug in GTK. */
 318         GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 319     }
 320     else
 321     {
 322         /* this moves the cursor pos to behind the inserted text */
 323         gint len = GTK_EDITABLE(m_text)->current_pos;
 324         gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
 325
 326         /* bring editable's cursor uptodate. bug in GTK. */
 327         GTK_EDITABLE(m_text)->current_pos += text.Len();
 328
 329         /* bring entry's cursor uptodate. bug in GTK. */
 330         gtk_entry_set_position( GTK_ENTRY(m_text), GTK_EDITABLE(m_text)->current_pos );
 331     }
 332 }
 333
 334 void wxTextCtrl::AppendText( const wxString &text )
 335 {
 336     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 337
 338     if (m_windowStyle & wxTE_MULTILINE)
 339     {
 340         /* we'll insert at the last position */
 341         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 342         gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
 343
 344         /* bring editable's cursor uptodate. bug in GTK. */
 345         GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 346     }
 347     else
 348     {
 349         gtk_entry_append_text( GTK_ENTRY(m_text), text );
 350     }
 351 }
 352
 353 bool wxTextCtrl::LoadFile( const wxString &file )
 354 {
 355   wxCHECK_MSG( m_text != NULL, FALSE, "invalid text ctrl" );
 356
 357   if (!wxFileExists(file)) return FALSE;
 358
 359   Clear();
 360
 361   FILE *fp = (FILE*) NULL;
 362   struct stat statb;
 363
 364   if ((stat ((char*) (const char*) file, &statb) == -1) || (statb.st_mode & S_IFMT) != S_IFREG ||
 365       !(fp = fopen ((char*) (const char*) file, "r")))
 366   {
 367       return FALSE;
 368   }
 369   else
 370   {
 371     gint len = statb.st_size;
 372     char *text;
 373     if (!(text = (char*)malloc ((unsigned) (len + 1))))
 374     {
 375       fclose (fp);
 376       return FALSE;
 377     }
 378     if (fread (text, sizeof (char), len, fp) != (size_t) len)
 379     {
 380     }
 381     fclose (fp);
 382
 383     text[len] = 0;
 384
 385     if (m_windowStyle & wxTE_MULTILINE)
 386     {
 387       gint pos = 0;
 388       gtk_editable_insert_text( GTK_EDITABLE(m_text), text, len, &pos );
 389     }
 390     else
 391     {
 392       gtk_entry_set_text( GTK_ENTRY(m_text), text );
 393     }
 394
 395     free (text);
 396     m_modified = FALSE;
 397     return TRUE;
 398   }
 399   return FALSE;
 400 }
 401
 402 bool wxTextCtrl::SaveFile( const wxString &file )
 403 {
 404   wxCHECK_MSG( m_text != NULL, FALSE, "invalid text ctrl" );
 405
 406   if (file == "") return FALSE;
 407
 408   FILE *fp;
 409
 410   if (!(fp = fopen ((char*) (const char*) file, "w")))
 411     {
 412       return FALSE;
 413     }
 414   else
 415     {
 416       char *text = (char*) NULL;
 417       gint len = 0;
 418
 419       if (m_windowStyle & wxTE_MULTILINE)
 420       {
 421         len = gtk_text_get_length( GTK_TEXT(m_text) );
 422         text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 423       }
 424       else
 425       {
 426         text = gtk_entry_get_text( GTK_ENTRY(m_text) );
 427       }
 428
 429       if (fwrite (text, sizeof (char), len, fp) != (size_t) len)
 430       {
 431           // Did not write whole file
 432       }
 433
 434       // Make sure newline terminates the file
 435       if (text[len - 1] != '\n')
 436           fputc ('\n', fp);
 437
 438       fclose (fp);
 439
 440       if (m_windowStyle & wxTE_MULTILINE) g_free( text );
 441
 442       m_modified = FALSE;
 443       return TRUE;
 444     }
 445
 446   return TRUE;
 447 }
 448
 449 wxString wxTextCtrl::GetLineText( long lineNo ) const
 450 {
 451   if (m_windowStyle & wxTE_MULTILINE)
 452   {
 453     gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 454     char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 455
 456     if (text)
 457     {
 458         wxString buf("");
 459         long i;
 460         int currentLine = 0;
 461         for (i = 0; currentLine != lineNo && text[i]; i++ )
 462           if (text[i] == '\n')
 463             currentLine++;
 464         // Now get the text
 465         int j;
 466         for (j = 0; text[i] && text[i] != '\n'; i++, j++ )
 467             buf += text[i];
 468
 469         g_free( text );
 470         return buf;
 471     }
 472     else
 473       return wxEmptyString;
 474   }
 475   else
 476   {
 477     if (lineNo == 0) return GetValue();
 478     return wxEmptyString;
 479   }
 480 }
 481
 482 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 483 {
 484   /* If you implement this, don't forget to update the documentation!
 485    * (file docs/latex/wx/text.tex) */
 486     wxFAIL_MSG( "wxTextCtrl::OnDropFiles not implemented" );
 487 }
 488
 489 long wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
 490 {
 491     if ( m_windowStyle & wxTE_MULTILINE )
 492     {
 493         wxString text = GetValue();
 494
 495         // cast to prevent warning. But pos really should've been unsigned.
 496         if( (unsigned long)pos > text.Len()  )
 497             return FALSE;
 498
 499         *x=0;   // First Col
 500         *y=0;   // First Line
 501
 502         const char* stop = text.c_str() + pos;
 503         for ( const char *p = text.c_str(); p < stop; p++ )
 504         {
 505             if (*p == '\n')
 506             {
 507                 (*y)++;
 508                 *x=0;
 509             }
 510             else
 511                 (*x)++;
 512         }
 513     }
 514     else // single line control
 515     {
 516         if ( pos <= GTK_ENTRY(m_text)->text_length )
 517         {
 518             *y = 0;
 519             *x = pos;
 520         }
 521         else
 522         {
 523             // index out of bounds
 524             return FALSE;
 525         }
 526     }
 527
 528     return TRUE;
 529 }
 530
 531 long wxTextCtrl::XYToPosition(long x, long y ) const
 532 {
 533     if (!(m_windowStyle & wxTE_MULTILINE)) return 0;
 534
 535     long pos=0;
 536     for( int i=0; i<y; i++ ) pos += GetLineLength(i) + 1; // one for '\n'
 537
 538     pos += x;
 539     return pos;
 540 }
 541
 542 int wxTextCtrl::GetLineLength(long lineNo) const
 543 {
 544     wxString str = GetLineText (lineNo);
 545     return (int) str.Length();
 546 }
 547
 548 int wxTextCtrl::GetNumberOfLines() const
 549 {
 550     if (m_windowStyle & wxTE_MULTILINE)
 551     {
 552         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 553         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 554
 555         if (text)
 556         {
 557             int currentLine = 0;
 558             for (int i = 0; i < len; i++ )
 559             {
 560                 if (text[i] == '\n')
 561                     currentLine++;
 562             }
 563             g_free( text );
 564
 565             // currentLine is 0 based, add 1 to get number of lines
 566             return currentLine + 1;
 567         }
 568         else
 569         {
 570             return 0;
 571         }
 572     }
 573     else
 574     {
 575         return 1;
 576     }
 577 }
 578
 579 void wxTextCtrl::SetInsertionPoint( long pos )
 580 {
 581     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 582
 583     if (m_windowStyle & wxTE_MULTILINE)
 584     {
 585         /* seems to be broken in GTK 1.0.X:
 586            gtk_text_set_point( GTK_TEXT(m_text), (int)pos ); */
 587
 588         gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 589           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 590
 591         /* we fake a set_point by inserting and deleting. as the user
 592            isn't supposed to get to know about thos non-sense, we
 593            disconnect so that no events are sent to the user program. */
 594
 595         gint tmp = (gint)pos;
 596         gtk_editable_insert_text( GTK_EDITABLE(m_text), " ", 1, &tmp );
 597         gtk_editable_delete_text( GTK_EDITABLE(m_text), tmp-1, tmp );
 598
 599         gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 600           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 601
 602         /* bring editable's cursor uptodate. another bug in GTK. */
 603
 604         GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 605     }
 606     else
 607     {
 608         gtk_entry_set_position( GTK_ENTRY(m_text), (int)pos );
 609
 610         /* bring editable's cursor uptodate. bug in GTK. */
 611
 612         GTK_EDITABLE(m_text)->current_pos = pos;
 613     }
 614 }
 615
 616 void wxTextCtrl::SetInsertionPointEnd()
 617 {
 618     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 619
 620     if (m_windowStyle & wxTE_MULTILINE)
 621         SetInsertionPoint(gtk_text_get_length(GTK_TEXT(m_text)));
 622     else
 623         gtk_entry_set_position( GTK_ENTRY(m_text), -1 );
 624 }
 625
 626 void wxTextCtrl::SetEditable( bool editable )
 627 {
 628     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 629
 630     if (m_windowStyle & wxTE_MULTILINE)
 631         gtk_text_set_editable( GTK_TEXT(m_text), editable );
 632     else
 633         gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
 634 }
 635
 636 void wxTextCtrl::SetSelection( long from, long to )
 637 {
 638     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 639
 640     gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 641 }
 642
 643 void wxTextCtrl::ShowPosition( long WXUNUSED(pos) )
 644 {
 645     wxFAIL_MSG( "wxTextCtrl::ShowPosition not implemented" );
 646 }
 647
 648 long wxTextCtrl::GetInsertionPoint() const
 649 {
 650     wxCHECK_MSG( m_text != NULL, 0, "invalid text ctrl" );
 651
 652     return (long) GTK_EDITABLE(m_text)->current_pos;
 653 }
 654
 655 long wxTextCtrl::GetLastPosition() const
 656 {
 657     wxCHECK_MSG( m_text != NULL, 0, "invalid text ctrl" );
 658
 659     int pos = 0;
 660     if (m_windowStyle & wxTE_MULTILINE)
 661         pos = gtk_text_get_length( GTK_TEXT(m_text) );
 662     else
 663         pos = GTK_ENTRY(m_text)->text_length;
 664
 665     return (long)pos;
 666 }
 667
 668 void wxTextCtrl::Remove( long from, long to )
 669 {
 670     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 671
 672     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 673 }
 674
 675 void wxTextCtrl::Replace( long from, long to, const wxString &value )
 676 {
 677     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 678
 679     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 680     if (value.IsNull()) return;
 681     gint pos = (gint)from;
 682     gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &pos );
 683 }
 684
 685 void wxTextCtrl::Cut()
 686 {
 687     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 688
 689 #if (GTK_MINOR_VERSION > 0)
 690     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text) );
 691 #else
 692     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text), 0 );
 693 #endif
 694 }
 695
 696 void wxTextCtrl::Copy()
 697 {
 698     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 699
 700 #if (GTK_MINOR_VERSION > 0)
 701     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text) );
 702 #else
 703     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text), 0 );
 704 #endif
 705 }
 706
 707 void wxTextCtrl::Paste()
 708 {
 709     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 710
 711 #if (GTK_MINOR_VERSION > 0)
 712     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text) );
 713 #else
 714     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text), 0 );
 715 #endif
 716 }
 717
 718 bool wxTextCtrl::CanCopy() const
 719 {
 720     // Can copy if there's a selection
 721     long from, to;
 722     GetSelection(& from, & to);
 723     return (from != to) ;
 724 }
 725
 726 bool wxTextCtrl::CanCut() const
 727 {
 728     // Can cut if there's a selection
 729     long from, to;
 730     GetSelection(& from, & to);
 731     return (from != to) ;
 732 }
 733
 734 bool wxTextCtrl::CanPaste() const
 735 {
 736     return IsEditable() ;
 737 }
 738
 739 // Undo/redo
 740 void wxTextCtrl::Undo()
 741 {
 742     // TODO
 743     wxFAIL_MSG( "wxTextCtrl::Undo not implemented" );
 744 }
 745
 746 void wxTextCtrl::Redo()
 747 {
 748     // TODO
 749     wxFAIL_MSG( "wxTextCtrl::Redo not implemented" );
 750 }
 751
 752 bool wxTextCtrl::CanUndo() const
 753 {
 754     // TODO
 755     wxFAIL_MSG( "wxTextCtrl::CanUndo not implemented" );
 756     return FALSE;
 757 }
 758
 759 bool wxTextCtrl::CanRedo() const
 760 {
 761     // TODO
 762     wxFAIL_MSG( "wxTextCtrl::CanRedo not implemented" );
 763     return FALSE;
 764 }
 765
 766 // If the return values from and to are the same, there is no
 767 // selection.
 768 void wxTextCtrl::GetSelection(long* from, long* to) const
 769 {
 770     // TODO
 771     *from = 0;
 772     *to = 0;
 773     wxFAIL_MSG( "wxTextCtrl::GetSelection not implemented" );
 774 }
 775
 776 bool wxTextCtrl::IsEditable() const
 777 {
 778     // TODO
 779     wxFAIL_MSG( "wxTextCtrl::IsEditable not implemented" );
 780     return FALSE;
 781 }
 782
 783 void wxTextCtrl::Clear()
 784 {
 785     SetValue( "" );
 786 }
 787
 788 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
 789 {
 790     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 791
 792     if ((key_event.KeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
 793     {
 794         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
 795         event.SetEventObject(this);
 796         if (GetEventHandler()->ProcessEvent(event)) return;
 797     }
 798
 799     key_event.Skip();
 800 }
 801
 802 #ifndef NO_TEXT_WINDOW_STREAM
 803 int wxTextCtrl::overflow( int WXUNUSED(c) )
 804 {
 805     int len = pptr() - pbase();
 806     char *txt = new char[len+1];
 807     strncpy(txt, pbase(), len);
 808     txt[len] = '\0';
 809     (*this) << txt;
 810     setp(pbase(), epptr());
 811     delete[] txt;
 812     return EOF;
 813 }
 814
 815 int wxTextCtrl::sync()
 816 {
 817     int len = pptr() - pbase();
 818     char *txt = new char[len+1];
 819     strncpy(txt, pbase(), len);
 820     txt[len] = '\0';
 821     (*this) << txt;
 822     setp(pbase(), epptr());
 823     delete[] txt;
 824     return 0;
 825 }
 826
 827 int wxTextCtrl::underflow()
 828 {
 829     return EOF;
 830 }
 831
 832 wxTextCtrl& wxTextCtrl::operator<<(const wxString& s)
 833 {
 834     AppendText(s);
 835     return *this;
 836 }
 837
 838 wxTextCtrl& wxTextCtrl::operator<<(float f)
 839 {
 840     static char buf[100];
 841     sprintf(buf, "%.2f", f);
 842     AppendText(buf);
 843     return *this;
 844 }
 845
 846 wxTextCtrl& wxTextCtrl::operator<<(double d)
 847 {
 848     static char buf[100];
 849     sprintf(buf, "%.2f", d);
 850     AppendText(buf);
 851     return *this;
 852 }
 853
 854 wxTextCtrl& wxTextCtrl::operator<<(int i)
 855 {
 856     static char buf[100];
 857     sprintf(buf, "%i", i);
 858     AppendText(buf);
 859     return *this;
 860 }
 861
 862 wxTextCtrl& wxTextCtrl::operator<<(long i)
 863 {
 864     static char buf[100];
 865     sprintf(buf, "%ld", i);
 866     AppendText(buf);
 867     return *this;
 868 }
 869
 870 wxTextCtrl& wxTextCtrl::operator<<(const char c)
 871 {
 872     char buf[2];
 873
 874     buf[0] = c;
 875     buf[1] = 0;
 876     AppendText(buf);
 877     return *this;
 878 }
 879 #endif
 880
 881 GtkWidget* wxTextCtrl::GetConnectWidget()
 882 {
 883     return GTK_WIDGET(m_text);
 884 }
 885
 886 bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
 887 {
 888     if (m_windowStyle & wxTE_MULTILINE)
 889         return (window == GTK_TEXT(m_text)->text_area);
 890     else
 891         return (window == GTK_ENTRY(m_text)->text_area);
 892 }
 893
 894 void wxTextCtrl::SetFont( const wxFont &WXUNUSED(font) )
 895 {
 896     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 897
 898     // doesn't work
 899 }
 900
 901 void wxTextCtrl::SetForegroundColour( const wxColour &WXUNUSED(colour) )
 902 {
 903     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 904
 905     // doesn't work
 906 }
 907
 908 void wxTextCtrl::SetBackgroundColour( const wxColour &colour )
 909 {
 910     wxCHECK_RET( m_text != NULL, "invalid text ctrl" );
 911
 912     wxControl::SetBackgroundColour( colour );
 913
 914     wxColour sysbg = wxSystemSettings::GetSystemColour( wxSYS_COLOUR_BTNFACE );
 915     if (sysbg.Red() == colour.Red() &&
 916         sysbg.Green() == colour.Green() &&
 917         sysbg.Blue() == colour.Blue())
 918     {
 919         return;
 920     }
 921
 922     if (!m_backgroundColour.Ok()) return;
 923
 924     if (m_windowStyle & wxTE_MULTILINE)
 925     {
 926         GdkWindow *window = GTK_TEXT(m_text)->text_area;
 927         m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
 928         gdk_window_set_background( window, m_backgroundColour.GetColor() );
 929         gdk_window_clear( window );
 930     }
 931 }
 932
 933 void wxTextCtrl::ApplyWidgetStyle()
 934 {
 935     if (m_windowStyle & wxTE_MULTILINE)
 936     {
 937         // how ?
 938     }
 939     else
 940     {
 941         SetWidgetStyle();
 942         gtk_widget_set_style( m_text, m_widgetStyle );
 943     }
 944 }
 945
 946 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
 947 {
 948     Cut();
 949 }
 950
 951 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
 952 {
 953     Copy();
 954 }
 955
 956 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
 957 {
 958     Paste();
 959 }
 960
 961 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
 962 {
 963     Undo();
 964 }
 965
 966 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
 967 {
 968     Redo();
 969 }
 970
 971 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
 972 {
 973     event.Enable( CanCut() );
 974 }
 975
 976 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
 977 {
 978     event.Enable( CanCopy() );
 979 }
 980
 981 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
 982 {
 983     event.Enable( CanPaste() );
 984 }
 985
 986 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
 987 {
 988     event.Enable( CanUndo() );
 989 }
 990
 991 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
 992 {
 993     event.Enable( CanRedo() );
 994 }