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 // 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 wxTextCtrl::wxTextCtrl()
  98 {
  99     m_modified = FALSE;
 100 }
 101
 102 wxTextCtrl::wxTextCtrl( wxWindow *parent, wxWindowID id, const wxString &value,
 103       const wxPoint &pos, const wxSize &size,
 104       int style, const wxValidator& validator, const wxString &name )
 105 {
 106     m_modified = FALSE;
 107     Create( parent, id, value, pos, size, style, validator, name );
 108 }
 109
 110 bool wxTextCtrl::Create( wxWindow *parent, wxWindowID id, const wxString &value,
 111       const wxPoint &pos, const wxSize &size,
 112       int style, const wxValidator& validator, const wxString &name )
 113 {
 114     m_needParent = TRUE;
 115     m_acceptsFocus = TRUE;
 116
 117     PreCreation( parent, id, pos, size, style, name );
 118
 119 #if wxUSE_VALIDATORS
 120     SetValidator( validator );
 121 #endif // wxUSE_VALIDATORS
 122
 123     m_vScrollbarVisible = FALSE;
 124
 125     bool multi_line = (style & wxTE_MULTILINE) != 0;
 126     if (multi_line)
 127     {
 128 #if (GTK_MINOR_VERSION > 2)
 129         /* a multi-line edit control: create a vertical scrollbar by default and
 130            horizontal if requested */
 131         bool bHasHScrollbar = (style & wxHSCROLL) != 0;
 132 #else
 133         bool bHasHScrollbar = FALSE;
 134 #endif
 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         gtk_table_attach( GTK_TABLE(m_widget), m_text, 0, 1, 0, 1,
 143                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 144                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 145                        0, 0);
 146
 147         /* always wrap words */
 148         gtk_text_set_word_wrap( GTK_TEXT(m_text), TRUE );
 149
 150 #if (GTK_MINOR_VERSION > 2)
 151         /* put the horizontal scrollbar in the lower left hand corner */
 152         if (bHasHScrollbar)
 153         {
 154             GtkWidget *hscrollbar = gtk_hscrollbar_new(GTK_TEXT(m_text)->hadj);
 155             GTK_WIDGET_UNSET_FLAGS( hscrollbar, GTK_CAN_FOCUS );
 156             gtk_table_attach(GTK_TABLE(m_widget), hscrollbar, 0, 1, 1, 2,
 157                        (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
 158                        GTK_FILL,
 159                        0, 0);
 160             gtk_widget_show(hscrollbar);
 161
 162             /* don't wrap lines, otherwise we wouldn't need the scrollbar */
 163             gtk_text_set_line_wrap( GTK_TEXT(m_text), FALSE );
 164         }
 165 #endif
 166
 167         /* finally, put the vertical scrollbar in the upper right corner */
 168         m_vScrollbar = gtk_vscrollbar_new( GTK_TEXT(m_text)->vadj );
 169         GTK_WIDGET_UNSET_FLAGS( m_vScrollbar, GTK_CAN_FOCUS );
 170         gtk_table_attach(GTK_TABLE(m_widget), m_vScrollbar, 1, 2, 0, 1,
 171                      GTK_FILL,
 172                      (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
 173                      0, 0);
 174     }
 175     else
 176     {
 177         /* a single-line text control: no need for scrollbars */
 178         m_widget =
 179           m_text = gtk_entry_new();
 180     }
 181
 182     wxSize newSize = size;
 183     if (newSize.x == -1) newSize.x = 80;
 184     if (newSize.y == -1) newSize.y = 26;
 185     SetSize( newSize.x, newSize.y );
 186
 187     m_parent->DoAddChild( this );
 188
 189     PostCreation();
 190
 191     if (multi_line)
 192         gtk_widget_show(m_text);
 193
 194     /* we want to be notified about text changes */
 195     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 196       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 197
 198     if (multi_line)
 199     {
 200         gtk_signal_connect(GTK_OBJECT(GTK_TEXT(m_text)->vadj), "changed",
 201           (GtkSignalFunc) gtk_scrollbar_changed_callback, (gpointer) this );
 202     }
 203
 204     if (!value.IsEmpty())
 205     {
 206         gint tmp = 0;
 207
 208 #if GTK_MINOR_VERSION == 0
 209         // if we don't realize it, GTK 1.0.6 dies with a SIGSEGV in
 210         // gtk_editable_insert_text()
 211         gtk_widget_realize(m_text);
 212 #endif // GTK 1.0
 213
 214 #if wxUSE_UNICODE
 215         wxWX2MBbuf val = value.mbc_str();
 216         gtk_editable_insert_text( GTK_EDITABLE(m_text), val, strlen(val), &tmp );
 217 #else // !Unicode
 218         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &tmp );
 219 #endif // Unicode/!Unicode
 220
 221         if (multi_line)
 222         {
 223             /* bring editable's cursor uptodate. bug in GTK. */
 224
 225             GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 226         }
 227     }
 228
 229     if (style & wxTE_PASSWORD)
 230     {
 231         if (!multi_line)
 232             gtk_entry_set_visibility( GTK_ENTRY(m_text), FALSE );
 233     }
 234
 235     if (style & wxTE_READONLY)
 236     {
 237         if (!multi_line)
 238             gtk_entry_set_editable( GTK_ENTRY(m_text), FALSE );
 239     }
 240     else
 241     {
 242         if (multi_line)
 243             gtk_text_set_editable( GTK_TEXT(m_text), 1 );
 244     }
 245
 246     SetBackgroundColour( wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW) );
 247     SetForegroundColour( parent->GetForegroundColour() );
 248
 249     Show( TRUE );
 250
 251     return TRUE;
 252 }
 253
 254 void wxTextCtrl::CalculateScrollbar()
 255 {
 256     if ((m_windowStyle & wxTE_MULTILINE) == 0) return;
 257
 258     GtkAdjustment *adj = GTK_TEXT(m_text)->vadj;
 259
 260     if (adj->upper - adj->page_size < 0.8)
 261     {
 262         if (m_vScrollbarVisible)
 263         {
 264             gtk_widget_hide( m_vScrollbar );
 265             m_vScrollbarVisible = FALSE;
 266         }
 267     }
 268     else
 269     {
 270         if (!m_vScrollbarVisible)
 271         {
 272             gtk_widget_show( m_vScrollbar );
 273             m_vScrollbarVisible = TRUE;
 274         }
 275     }
 276 }
 277
 278 wxString wxTextCtrl::GetValue() const
 279 {
 280     wxCHECK_MSG( m_text != NULL, _T(""), _T("invalid text ctrl") );
 281
 282     wxString tmp;
 283     if (m_windowStyle & wxTE_MULTILINE)
 284     {
 285         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 286         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 287         tmp = wxString(text,*wxConvCurrent);
 288         g_free( text );
 289     }
 290     else
 291     {
 292         tmp = wxString(gtk_entry_get_text( GTK_ENTRY(m_text) ),*wxConvCurrent);
 293     }
 294     return tmp;
 295 }
 296
 297 void wxTextCtrl::SetValue( const wxString &value )
 298 {
 299     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 300
 301     gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 302       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 303
 304     wxString tmp = _T("");
 305     if (!value.IsNull()) tmp = value;
 306     if (m_windowStyle & wxTE_MULTILINE)
 307     {
 308         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 309         gtk_editable_delete_text( GTK_EDITABLE(m_text), 0, len );
 310         len = 0;
 311 #if wxUSE_UNICODE
 312         wxWX2MBbuf tmpbuf = tmp.mbc_str();
 313         gtk_editable_insert_text( GTK_EDITABLE(m_text), tmpbuf, strlen(tmpbuf), &len );
 314 #else
 315         gtk_editable_insert_text( GTK_EDITABLE(m_text), tmp.mbc_str(), tmp.Length(), &len );
 316 #endif
 317     }
 318     else
 319     {
 320         gtk_entry_set_text( GTK_ENTRY(m_text), tmp.mbc_str() );
 321     }
 322
 323     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 324       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 325 }
 326
 327 void wxTextCtrl::WriteText( const wxString &text )
 328 {
 329     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 330
 331     if (text.IsEmpty()) return;
 332
 333     gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 334       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 335
 336     if (m_windowStyle & wxTE_MULTILINE)
 337     {
 338         /* this moves the cursor pos to behind the inserted text */
 339         gint len = GTK_EDITABLE(m_text)->current_pos;
 340
 341 #if wxUSE_UNICODE
 342         wxWX2MBbuf buf = text.mbc_str();
 343         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &len );
 344 #else
 345         gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
 346 #endif
 347
 348         /* bring editable's cursor uptodate. bug in GTK. */
 349         GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 350     }
 351     else
 352     {
 353         /* this moves the cursor pos to behind the inserted text */
 354         gint len = GTK_EDITABLE(m_text)->current_pos;
 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 += text.Len();
 364
 365         /* bring entry's cursor uptodate. bug in GTK. */
 366         gtk_entry_set_position( GTK_ENTRY(m_text), GTK_EDITABLE(m_text)->current_pos );
 367     }
 368
 369     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 370       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 371 }
 372
 373 void wxTextCtrl::AppendText( const wxString &text )
 374 {
 375     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 376
 377     if (text.IsEmpty()) return;
 378
 379     gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 380       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 381
 382     if (m_windowStyle & wxTE_MULTILINE)
 383     {
 384         bool hasSpecialAttributes = m_font.Ok() ||
 385                                     m_foregroundColour.Ok() ||
 386                                     m_backgroundColour.Ok();
 387         if ( hasSpecialAttributes )
 388         {
 389              gtk_text_insert( GTK_TEXT(m_text),
 390                               m_font.GetInternalFont(),
 391                               m_foregroundColour.GetColor(),
 392                               m_backgroundColour.GetColor(),
 393                               text.mbc_str(), text.length());
 394
 395         }
 396         else
 397         {
 398             /* we'll insert at the last position */
 399             gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 400 #if wxUSE_UNICODE
 401             wxWX2MBbuf buf = text.mbc_str();
 402             gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &len );
 403 #else
 404             gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
 405 #endif
 406         }
 407
 408         /* bring editable's cursor uptodate. bug in GTK. */
 409         GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 410     }
 411     else
 412     {
 413         gtk_entry_append_text( GTK_ENTRY(m_text), text.mbc_str() );
 414     }
 415
 416     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 417       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 418 }
 419
 420 wxString wxTextCtrl::GetLineText( long lineNo ) const
 421 {
 422   if (m_windowStyle & wxTE_MULTILINE)
 423   {
 424     gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 425     char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 426
 427     if (text)
 428     {
 429         wxString buf(_T(""));
 430         long i;
 431         int currentLine = 0;
 432         for (i = 0; currentLine != lineNo && text[i]; i++ )
 433           if (text[i] == '\n')
 434             currentLine++;
 435         // Now get the text
 436         int j;
 437         for (j = 0; text[i] && text[i] != '\n'; i++, j++ )
 438             buf += text[i];
 439
 440         g_free( text );
 441         return buf;
 442     }
 443     else
 444       return wxEmptyString;
 445   }
 446   else
 447   {
 448     if (lineNo == 0) return GetValue();
 449     return wxEmptyString;
 450   }
 451 }
 452
 453 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 454 {
 455   /* If you implement this, don't forget to update the documentation!
 456    * (file docs/latex/wx/text.tex) */
 457     wxFAIL_MSG( _T("wxTextCtrl::OnDropFiles not implemented") );
 458 }
 459
 460 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
 461 {
 462     if ( m_windowStyle & wxTE_MULTILINE )
 463     {
 464         wxString text = GetValue();
 465
 466         // cast to prevent warning. But pos really should've been unsigned.
 467         if( (unsigned long)pos > text.Len()  )
 468             return FALSE;
 469
 470         *x=0;   // First Col
 471         *y=0;   // First Line
 472
 473         const wxChar* stop = text.c_str() + pos;
 474         for ( const wxChar *p = text.c_str(); p < stop; p++ )
 475         {
 476             if (*p == _T('\n'))
 477             {
 478                 (*y)++;
 479                 *x=0;
 480             }
 481             else
 482                 (*x)++;
 483         }
 484     }
 485     else // single line control
 486     {
 487         if ( pos <= GTK_ENTRY(m_text)->text_length )
 488         {
 489             *y = 0;
 490             *x = pos;
 491         }
 492         else
 493         {
 494             // index out of bounds
 495             return FALSE;
 496         }
 497     }
 498
 499     return TRUE;
 500 }
 501
 502 long wxTextCtrl::XYToPosition(long x, long y ) const
 503 {
 504     if (!(m_windowStyle & wxTE_MULTILINE)) return 0;
 505
 506     long pos=0;
 507     for( int i=0; i<y; i++ ) pos += GetLineLength(i) + 1; // one for '\n'
 508
 509     pos += x;
 510     return pos;
 511 }
 512
 513 int wxTextCtrl::GetLineLength(long lineNo) const
 514 {
 515     wxString str = GetLineText (lineNo);
 516     return (int) str.Length();
 517 }
 518
 519 int wxTextCtrl::GetNumberOfLines() const
 520 {
 521     if (m_windowStyle & wxTE_MULTILINE)
 522     {
 523         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 524         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 525
 526         if (text)
 527         {
 528             int currentLine = 0;
 529             for (int i = 0; i < len; i++ )
 530             {
 531                 if (text[i] == '\n')
 532                     currentLine++;
 533             }
 534             g_free( text );
 535
 536             // currentLine is 0 based, add 1 to get number of lines
 537             return currentLine + 1;
 538         }
 539         else
 540         {
 541             return 0;
 542         }
 543     }
 544     else
 545     {
 546         return 1;
 547     }
 548 }
 549
 550 void wxTextCtrl::SetInsertionPoint( long pos )
 551 {
 552     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 553
 554     if (m_windowStyle & wxTE_MULTILINE)
 555     {
 556         /* seems to be broken in GTK 1.0.X:
 557            gtk_text_set_point( GTK_TEXT(m_text), (int)pos ); */
 558
 559         gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 560           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 561
 562         /* we fake a set_point by inserting and deleting. as the user
 563            isn't supposed to get to know about thos non-sense, we
 564            disconnect so that no events are sent to the user program. */
 565
 566         gint tmp = (gint)pos;
 567         gtk_editable_insert_text( GTK_EDITABLE(m_text), " ", 1, &tmp );
 568         gtk_editable_delete_text( GTK_EDITABLE(m_text), tmp-1, tmp );
 569
 570         gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 571           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 572
 573         /* bring editable's cursor uptodate. another bug in GTK. */
 574
 575         GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 576     }
 577     else
 578     {
 579         gtk_entry_set_position( GTK_ENTRY(m_text), (int)pos );
 580
 581         /* bring editable's cursor uptodate. bug in GTK. */
 582
 583         GTK_EDITABLE(m_text)->current_pos = pos;
 584     }
 585 }
 586
 587 void wxTextCtrl::SetInsertionPointEnd()
 588 {
 589     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 590
 591     if (m_windowStyle & wxTE_MULTILINE)
 592         SetInsertionPoint(gtk_text_get_length(GTK_TEXT(m_text)));
 593     else
 594         gtk_entry_set_position( GTK_ENTRY(m_text), -1 );
 595 }
 596
 597 void wxTextCtrl::SetEditable( bool editable )
 598 {
 599     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 600
 601     if (m_windowStyle & wxTE_MULTILINE)
 602         gtk_text_set_editable( GTK_TEXT(m_text), editable );
 603     else
 604         gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
 605 }
 606
 607 void wxTextCtrl::DiscardEdits()
 608 {
 609     m_modified = FALSE;
 610 }
 611
 612 void wxTextCtrl::SetSelection( long from, long to )
 613 {
 614     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 615
 616     gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 617 }
 618
 619 void wxTextCtrl::ShowPosition( long WXUNUSED(pos) )
 620 {
 621 //    SetInsertionPoint( pos );
 622 }
 623
 624 long wxTextCtrl::GetInsertionPoint() const
 625 {
 626     wxCHECK_MSG( m_text != NULL, 0, _T("invalid text ctrl") );
 627
 628     return (long) GTK_EDITABLE(m_text)->current_pos;
 629 }
 630
 631 long wxTextCtrl::GetLastPosition() const
 632 {
 633     wxCHECK_MSG( m_text != NULL, 0, _T("invalid text ctrl") );
 634
 635     int pos = 0;
 636     if (m_windowStyle & wxTE_MULTILINE)
 637         pos = gtk_text_get_length( GTK_TEXT(m_text) );
 638     else
 639         pos = GTK_ENTRY(m_text)->text_length;
 640
 641     return (long)pos;
 642 }
 643
 644 void wxTextCtrl::Remove( long from, long to )
 645 {
 646     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 647
 648     gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 649       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 650
 651     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 652
 653     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 654       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 655 }
 656
 657 void wxTextCtrl::Replace( long from, long to, const wxString &value )
 658 {
 659     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 660
 661     gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 662       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 663
 664     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 665
 666     if (!value.IsEmpty())
 667     {
 668         gint pos = (gint)from;
 669 #if wxUSE_UNICODE
 670         wxWX2MBbuf buf = value.mbc_str();
 671         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &pos );
 672 #else
 673         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &pos );
 674 #endif
 675     }
 676
 677     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 678       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 679 }
 680
 681 void wxTextCtrl::Cut()
 682 {
 683     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 684
 685     gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 686       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 687
 688 #if (GTK_MINOR_VERSION > 0)
 689     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text) );
 690 #else
 691     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text), 0 );
 692 #endif
 693
 694     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 695       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 696 }
 697
 698 void wxTextCtrl::Copy()
 699 {
 700     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 701
 702 #if (GTK_MINOR_VERSION > 0)
 703     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text) );
 704 #else
 705     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text), 0 );
 706 #endif
 707 }
 708
 709 void wxTextCtrl::Paste()
 710 {
 711     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 712
 713     gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 714       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 715
 716 #if (GTK_MINOR_VERSION > 0)
 717     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text) );
 718 #else
 719     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text), 0 );
 720 #endif
 721
 722     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 723       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 724 }
 725
 726 bool wxTextCtrl::CanCopy() const
 727 {
 728     // Can copy if there's a selection
 729     long from, to;
 730     GetSelection(& from, & to);
 731     return (from != to) ;
 732 }
 733
 734 bool wxTextCtrl::CanCut() const
 735 {
 736     // Can cut if there's a selection
 737     long from, to;
 738     GetSelection(& from, & to);
 739     return (from != to) ;
 740 }
 741
 742 bool wxTextCtrl::CanPaste() const
 743 {
 744     return IsEditable() ;
 745 }
 746
 747 // Undo/redo
 748 void wxTextCtrl::Undo()
 749 {
 750     // TODO
 751     wxFAIL_MSG( _T("wxTextCtrl::Undo not implemented") );
 752 }
 753
 754 void wxTextCtrl::Redo()
 755 {
 756     // TODO
 757     wxFAIL_MSG( _T("wxTextCtrl::Redo not implemented") );
 758 }
 759
 760 bool wxTextCtrl::CanUndo() const
 761 {
 762     // TODO
 763     wxFAIL_MSG( _T("wxTextCtrl::CanUndo not implemented") );
 764     return FALSE;
 765 }
 766
 767 bool wxTextCtrl::CanRedo() const
 768 {
 769     // TODO
 770     wxFAIL_MSG( _T("wxTextCtrl::CanRedo not implemented") );
 771     return FALSE;
 772 }
 773
 774 // If the return values from and to are the same, there is no
 775 // selection.
 776 void wxTextCtrl::GetSelection(long* from, long* to) const
 777 {
 778     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 779
 780     if (!(GTK_EDITABLE(m_text)->has_selection))
 781     {
 782         if (from) *from = 0;
 783         if (to)   *to = 0;
 784         return;
 785     }
 786
 787     if (from) *from = (long) GTK_EDITABLE(m_text)->selection_start_pos;
 788     if (to)   *to = (long) GTK_EDITABLE(m_text)->selection_end_pos;
 789 }
 790
 791 bool wxTextCtrl::IsEditable() const
 792 {
 793     wxCHECK_MSG( m_text != NULL, FALSE, _T("invalid text ctrl") );
 794
 795     return GTK_EDITABLE(m_text)->editable;
 796 }
 797
 798 bool wxTextCtrl::IsModified() const
 799 {
 800     return m_modified;
 801 }
 802
 803 void wxTextCtrl::Clear()
 804 {
 805     SetValue( _T("") );
 806 }
 807
 808 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
 809 {
 810     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 811
 812     if ((key_event.KeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
 813     {
 814         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
 815         event.SetEventObject(this);
 816         if (GetEventHandler()->ProcessEvent(event)) return;
 817     }
 818
 819     key_event.Skip();
 820 }
 821
 822 GtkWidget* wxTextCtrl::GetConnectWidget()
 823 {
 824     return GTK_WIDGET(m_text);
 825 }
 826
 827 bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
 828 {
 829     if (m_windowStyle & wxTE_MULTILINE)
 830         return (window == GTK_TEXT(m_text)->text_area);
 831     else
 832         return (window == GTK_ENTRY(m_text)->text_area);
 833 }
 834
 835 // the font will change for subsequent text insertiongs
 836 bool wxTextCtrl::SetFont( const wxFont &font )
 837 {
 838     wxCHECK_MSG( m_text != NULL, FALSE, _T("invalid text ctrl") );
 839
 840     if ( !wxWindowBase::SetFont(font) )
 841     {
 842         // font didn't change, nothing to do
 843         return FALSE;
 844     }
 845
 846     if ( m_windowStyle & wxTE_MULTILINE )
 847     {
 848         // for compatibility with other ports: the font is a global controls
 849         // characteristic, so change the font globally
 850         wxString value = GetValue();
 851         if ( !value.IsEmpty() )
 852         {
 853             Clear();
 854
 855             AppendText(value);
 856         }
 857     }
 858
 859     return TRUE;
 860 }
 861
 862 bool wxTextCtrl::SetForegroundColour( const wxColour &WXUNUSED(colour) )
 863 {
 864     wxCHECK_MSG( m_text != NULL, FALSE, _T("invalid text ctrl") );
 865
 866     // doesn't work
 867     return FALSE;
 868 }
 869
 870 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
 871 {
 872     wxCHECK_MSG( m_text != NULL, FALSE, _T("invalid text ctrl") );
 873
 874     wxControl::SetBackgroundColour( colour );
 875
 876     if (!m_widget->window)
 877         return FALSE;
 878
 879     wxColour sysbg = wxSystemSettings::GetSystemColour( wxSYS_COLOUR_BTNFACE );
 880     if (sysbg.Red() == colour.Red() &&
 881         sysbg.Green() == colour.Green() &&
 882         sysbg.Blue() == colour.Blue())
 883     {
 884         return FALSE; // FIXME or TRUE?
 885     }
 886
 887     if (!m_backgroundColour.Ok())
 888         return FALSE;
 889
 890     if (m_windowStyle & wxTE_MULTILINE)
 891     {
 892         GdkWindow *window = GTK_TEXT(m_text)->text_area;
 893         if (!window)
 894             return FALSE;
 895         m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
 896         gdk_window_set_background( window, m_backgroundColour.GetColor() );
 897         gdk_window_clear( window );
 898     }
 899
 900     return TRUE;
 901 }
 902
 903 void wxTextCtrl::ApplyWidgetStyle()
 904 {
 905     if (m_windowStyle & wxTE_MULTILINE)
 906     {
 907         // how ?
 908     }
 909     else
 910     {
 911         SetWidgetStyle();
 912         gtk_widget_set_style( m_text, m_widgetStyle );
 913     }
 914 }
 915
 916 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
 917 {
 918     Cut();
 919 }
 920
 921 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
 922 {
 923     Copy();
 924 }
 925
 926 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
 927 {
 928     Paste();
 929 }
 930
 931 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
 932 {
 933     Undo();
 934 }
 935
 936 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
 937 {
 938     Redo();
 939 }
 940
 941 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
 942 {
 943     event.Enable( CanCut() );
 944 }
 945
 946 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
 947 {
 948     event.Enable( CanCopy() );
 949 }
 950
 951 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
 952 {
 953     event.Enable( CanPaste() );
 954 }
 955
 956 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
 957 {
 958     event.Enable( CanUndo() );
 959 }
 960
 961 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
 962 {
 963     event.Enable( CanRedo() );
 964 }