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/log.h"
  18 #include "wx/settings.h"
  19
  20 #include <sys/types.h>
  21 #include <sys/stat.h>
  22 #include <ctype.h>
  23
  24 #include "gdk/gdk.h"
  25 #include "gtk/gtk.h"
  26 #include "gdk/gdkkeysyms.h"
  27
  28 //-----------------------------------------------------------------------------
  29 // idle system
  30 //-----------------------------------------------------------------------------
  31
  32 extern void wxapp_install_idle_handler();
  33 extern bool g_isIdle;
  34
  35 //-----------------------------------------------------------------------------
  36 // data
  37 //-----------------------------------------------------------------------------
  38
  39 extern bool       g_blockEventsOnDrag;
  40 extern wxCursor   g_globalCursor;
  41
  42 //-----------------------------------------------------------------------------
  43 //  "changed"
  44 //-----------------------------------------------------------------------------
  45
  46 static void
  47 gtk_text_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
  48 {
  49     if (!win->m_hasVMT) return;
  50
  51     if (g_isIdle)
  52         wxapp_install_idle_handler();
  53
  54     win->SetModified();
  55     win->UpdateFontIfNeeded();
  56
  57     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->GetId() );
  58     event.SetString( win->GetValue() );
  59     event.SetEventObject( win );
  60     win->GetEventHandler()->ProcessEvent( event );
  61 }
  62
  63 //-----------------------------------------------------------------------------
  64 // "changed" from vertical scrollbar
  65 //-----------------------------------------------------------------------------
  66
  67 static void
  68 gtk_scrollbar_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
  69 {
  70     if (!win->m_hasVMT) return;
  71
  72     if (g_isIdle)
  73         wxapp_install_idle_handler();
  74
  75     win->CalculateScrollbar();
  76 }
  77
  78 //-----------------------------------------------------------------------------
  79 //  wxTextCtrl
  80 //-----------------------------------------------------------------------------
  81
  82 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl,wxControl)
  83
  84 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
  85     EVT_CHAR(wxTextCtrl::OnChar)
  86
  87     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
  88     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
  89     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
  90     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
  91     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
  92
  93     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
  94     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
  95     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
  96     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
  97     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
  98 END_EVENT_TABLE()
  99
 100 void wxTextCtrl::Init()
 101 {
 102     m_modified = FALSE;
 103     m_updateFont = FALSE;
 104     m_text =
 105     m_vScrollbar = (GtkWidget *)NULL;
 106 }
 107
 108 wxTextCtrl::wxTextCtrl( wxWindow *parent,
 109                         wxWindowID id,
 110                         const wxString &value,
 111                         const wxPoint &pos,
 112                         const wxSize &size,
 113                         long style,
 114                         const wxValidator& validator,
 115                         const wxString &name )
 116 {
 117     Init();
 118
 119     Create( parent, id, value, pos, size, style, validator, name );
 120 }
 121
 122 bool wxTextCtrl::Create( wxWindow *parent,
 123                          wxWindowID id,
 124                          const wxString &value,
 125                          const wxPoint &pos,
 126                          const wxSize &size,
 127                          long style,
 128                          const wxValidator& validator,
 129                          const wxString &name )
 130 {
 131     m_needParent = TRUE;
 132     m_acceptsFocus = TRUE;
 133
 134     if (!PreCreation( parent, pos, size ) ||
 135         !CreateBase( parent, id, pos, size, style, validator, name ))
 136     {
 137         wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
 138         return FALSE;
 139     }
 140
 141
 142     m_vScrollbarVisible = FALSE;
 143
 144     bool multi_line = (style & wxTE_MULTILINE) != 0;
 145     if (multi_line)
 146     {
 147 #if (GTK_MINOR_VERSION > 2)
 148         /* a multi-line edit control: create a vertical scrollbar by default and
 149            horizontal if requested */
 150         bool bHasHScrollbar = (style & wxHSCROLL) != 0;
 151 #else
 152         bool bHasHScrollbar = FALSE;
 153 #endif
 154
 155         /* create our control ... */
 156         m_text = gtk_text_new( (GtkAdjustment *) NULL, (GtkAdjustment *) NULL );
 157
 158         /* ... and put into the upper left hand corner of the table */
 159         m_widget = gtk_table_new(bHasHScrollbar ? 2 : 1, 2, FALSE);
 160         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 161         gtk_table_attach( GTK_TABLE(m_widget), m_text, 0, 1, 0, 1,
 162                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 163                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 164                        0, 0);
 165
 166         /* always wrap words */
 167         gtk_text_set_word_wrap( GTK_TEXT(m_text), TRUE );
 168
 169 #if (GTK_MINOR_VERSION > 2)
 170         /* put the horizontal scrollbar in the lower left hand corner */
 171         if (bHasHScrollbar)
 172         {
 173             GtkWidget *hscrollbar = gtk_hscrollbar_new(GTK_TEXT(m_text)->hadj);
 174             GTK_WIDGET_UNSET_FLAGS( hscrollbar, GTK_CAN_FOCUS );
 175             gtk_table_attach(GTK_TABLE(m_widget), hscrollbar, 0, 1, 1, 2,
 176                        (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
 177                        GTK_FILL,
 178                        0, 0);
 179             gtk_widget_show(hscrollbar);
 180
 181             /* don't wrap lines, otherwise we wouldn't need the scrollbar */
 182             gtk_text_set_line_wrap( GTK_TEXT(m_text), FALSE );
 183         }
 184 #endif
 185
 186         /* finally, put the vertical scrollbar in the upper right corner */
 187         m_vScrollbar = gtk_vscrollbar_new( GTK_TEXT(m_text)->vadj );
 188         GTK_WIDGET_UNSET_FLAGS( m_vScrollbar, GTK_CAN_FOCUS );
 189         gtk_table_attach(GTK_TABLE(m_widget), m_vScrollbar, 1, 2, 0, 1,
 190                      GTK_FILL,
 191                      (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
 192                      0, 0);
 193     }
 194     else
 195     {
 196         /* a single-line text control: no need for scrollbars */
 197         m_widget =
 198           m_text = gtk_entry_new();
 199     }
 200
 201     m_parent->DoAddChild( this );
 202
 203     PostCreation();
 204
 205     SetFont( parent->GetFont() );
 206
 207     wxSize size_best( DoGetBestSize() );
 208     wxSize new_size( size );
 209     if (new_size.x == -1)
 210         new_size.x = size_best.x;
 211     if (new_size.y == -1)
 212         new_size.y = size_best.y;
 213     if ((new_size.x != size.x) || (new_size.y != size.y))
 214         SetSize( new_size.x, new_size.y );
 215
 216     if (multi_line)
 217         gtk_widget_show(m_text);
 218
 219     /* we want to be notified about text changes */
 220     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 221       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 222
 223     if (multi_line)
 224     {
 225         gtk_signal_connect(GTK_OBJECT(GTK_TEXT(m_text)->vadj), "changed",
 226           (GtkSignalFunc) gtk_scrollbar_changed_callback, (gpointer) this );
 227     }
 228
 229     if (!value.IsEmpty())
 230     {
 231         gint tmp = 0;
 232
 233 #if GTK_MINOR_VERSION == 0
 234         // if we don't realize it, GTK 1.0.6 dies with a SIGSEGV in
 235         // gtk_editable_insert_text()
 236         gtk_widget_realize(m_text);
 237 #endif // GTK 1.0
 238
 239 #if wxUSE_UNICODE
 240         wxWX2MBbuf val = value.mbc_str();
 241         gtk_editable_insert_text( GTK_EDITABLE(m_text), val, strlen(val), &tmp );
 242 #else // !Unicode
 243         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &tmp );
 244 #endif // Unicode/!Unicode
 245
 246         if (multi_line)
 247         {
 248             /* bring editable's cursor uptodate. bug in GTK. */
 249
 250             GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 251         }
 252     }
 253
 254     if (style & wxTE_PASSWORD)
 255     {
 256         if (!multi_line)
 257             gtk_entry_set_visibility( GTK_ENTRY(m_text), FALSE );
 258     }
 259
 260     if (style & wxTE_READONLY)
 261     {
 262         if (!multi_line)
 263             gtk_entry_set_editable( GTK_ENTRY(m_text), FALSE );
 264     }
 265     else
 266     {
 267         if (multi_line)
 268             gtk_text_set_editable( GTK_TEXT(m_text), 1 );
 269     }
 270
 271     SetBackgroundColour( wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW) );
 272     SetForegroundColour( parent->GetForegroundColour() );
 273
 274     m_cursor = wxCursor( wxCURSOR_IBEAM );
 275
 276     Show( TRUE );
 277
 278     return TRUE;
 279 }
 280
 281 void wxTextCtrl::CalculateScrollbar()
 282 {
 283     if ((m_windowStyle & wxTE_MULTILINE) == 0) return;
 284
 285     GtkAdjustment *adj = GTK_TEXT(m_text)->vadj;
 286
 287     if (adj->upper - adj->page_size < 0.8)
 288     {
 289         if (m_vScrollbarVisible)
 290         {
 291             gtk_widget_hide( m_vScrollbar );
 292             m_vScrollbarVisible = FALSE;
 293         }
 294     }
 295     else
 296     {
 297         if (!m_vScrollbarVisible)
 298         {
 299             gtk_widget_show( m_vScrollbar );
 300             m_vScrollbarVisible = TRUE;
 301         }
 302     }
 303 }
 304
 305 wxString wxTextCtrl::GetValue() const
 306 {
 307     wxCHECK_MSG( m_text != NULL, wxT(""), wxT("invalid text ctrl") );
 308
 309     wxString tmp;
 310     if (m_windowStyle & wxTE_MULTILINE)
 311     {
 312         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 313         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 314         tmp = wxString(text,*wxConvCurrent);
 315         g_free( text );
 316     }
 317     else
 318     {
 319         tmp = wxString(gtk_entry_get_text( GTK_ENTRY(m_text) ),*wxConvCurrent);
 320     }
 321     return tmp;
 322 }
 323
 324 void wxTextCtrl::SetValue( const wxString &value )
 325 {
 326     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 327
 328     if (m_windowStyle & wxTE_MULTILINE)
 329     {
 330         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 331         gtk_editable_delete_text( GTK_EDITABLE(m_text), 0, len );
 332         len = 0;
 333 #if wxUSE_UNICODE
 334         wxWX2MBbuf tmpbuf = value.mbc_str();
 335         gtk_editable_insert_text( GTK_EDITABLE(m_text), tmpbuf, strlen(tmpbuf), &len );
 336 #else
 337         gtk_editable_insert_text( GTK_EDITABLE(m_text), value.mbc_str(), value.Length(), &len );
 338 #endif
 339     }
 340     else
 341     {
 342         gtk_entry_set_text( GTK_ENTRY(m_text), value.mbc_str() );
 343     }
 344
 345     // GRG, Jun/2000: Changed this after a lot of discussion in
 346     //   the lists. wxWindows 2.2 will have a set of flags to
 347     //   customize this behaviour.
 348     SetInsertionPoint(0);
 349
 350     m_modified = FALSE;
 351 }
 352
 353 void wxTextCtrl::WriteText( const wxString &text )
 354 {
 355     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 356
 357     if (text.IsEmpty()) return;
 358
 359     if (m_windowStyle & wxTE_MULTILINE)
 360     {
 361         /* this moves the cursor pos to behind the inserted text */
 362         gint len = GTK_EDITABLE(m_text)->current_pos;
 363
 364 #if wxUSE_UNICODE
 365         wxWX2MBbuf buf = text.mbc_str();
 366         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &len );
 367 #else
 368         gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
 369 #endif
 370
 371         /* bring editable's cursor uptodate. bug in GTK. */
 372         GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 373     }
 374     else
 375     {
 376         /* this moves the cursor pos to behind the inserted text */
 377         gint len = GTK_EDITABLE(m_text)->current_pos;
 378 #if wxUSE_UNICODE
 379         wxWX2MBbuf buf = text.mbc_str();
 380         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &len );
 381 #else
 382         gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
 383 #endif
 384
 385         /* bring editable's cursor uptodate. bug in GTK. */
 386         GTK_EDITABLE(m_text)->current_pos += text.Len();
 387
 388         /* bring entry's cursor uptodate. bug in GTK. */
 389         gtk_entry_set_position( GTK_ENTRY(m_text), GTK_EDITABLE(m_text)->current_pos );
 390     }
 391 }
 392
 393 void wxTextCtrl::AppendText( const wxString &text )
 394 {
 395     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 396
 397     if (text.IsEmpty()) return;
 398
 399     if (m_windowStyle & wxTE_MULTILINE)
 400     {
 401         bool hasSpecialAttributes = m_font.Ok() ||
 402                                     m_foregroundColour.Ok() ||
 403                                     m_backgroundColour.Ok();
 404         if ( hasSpecialAttributes )
 405         {
 406              gtk_text_insert( GTK_TEXT(m_text),
 407                               m_font.GetInternalFont(),
 408                               m_foregroundColour.GetColor(),
 409                               m_backgroundColour.GetColor(),
 410                               text.mbc_str(), text.length());
 411
 412         }
 413         else
 414         {
 415             /* we'll insert at the last position */
 416             gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 417 #if wxUSE_UNICODE
 418             wxWX2MBbuf buf = text.mbc_str();
 419             gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &len );
 420 #else
 421             gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
 422 #endif
 423         }
 424
 425         /* bring editable's cursor uptodate. bug in GTK. */
 426         GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 427     }
 428     else
 429     {
 430         gtk_entry_append_text( GTK_ENTRY(m_text), text.mbc_str() );
 431     }
 432 }
 433
 434 wxString wxTextCtrl::GetLineText( long lineNo ) const
 435 {
 436   if (m_windowStyle & wxTE_MULTILINE)
 437   {
 438     gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 439     char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 440
 441     if (text)
 442     {
 443         wxString buf(wxT(""));
 444         long i;
 445         int currentLine = 0;
 446         for (i = 0; currentLine != lineNo && text[i]; i++ )
 447           if (text[i] == '\n')
 448             currentLine++;
 449         // Now get the text
 450         int j;
 451         for (j = 0; text[i] && text[i] != '\n'; i++, j++ )
 452             buf += text[i];
 453
 454         g_free( text );
 455         return buf;
 456     }
 457     else
 458       return wxEmptyString;
 459   }
 460   else
 461   {
 462     if (lineNo == 0) return GetValue();
 463     return wxEmptyString;
 464   }
 465 }
 466
 467 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 468 {
 469   /* If you implement this, don't forget to update the documentation!
 470    * (file docs/latex/wx/text.tex) */
 471     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
 472 }
 473
 474 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
 475 {
 476     if ( m_windowStyle & wxTE_MULTILINE )
 477     {
 478         wxString text = GetValue();
 479
 480         // cast to prevent warning. But pos really should've been unsigned.
 481         if( (unsigned long)pos > text.Len()  )
 482             return FALSE;
 483
 484         *x=0;   // First Col
 485         *y=0;   // First Line
 486
 487         const wxChar* stop = text.c_str() + pos;
 488         for ( const wxChar *p = text.c_str(); p < stop; p++ )
 489         {
 490             if (*p == wxT('\n'))
 491             {
 492                 (*y)++;
 493                 *x=0;
 494             }
 495             else
 496                 (*x)++;
 497         }
 498     }
 499     else // single line control
 500     {
 501         if ( pos <= GTK_ENTRY(m_text)->text_length )
 502         {
 503             *y = 0;
 504             *x = pos;
 505         }
 506         else
 507         {
 508             // index out of bounds
 509             return FALSE;
 510         }
 511     }
 512
 513     return TRUE;
 514 }
 515
 516 long wxTextCtrl::XYToPosition(long x, long y ) const
 517 {
 518     if (!(m_windowStyle & wxTE_MULTILINE)) return 0;
 519
 520     long pos=0;
 521     for( int i=0; i<y; i++ ) pos += GetLineLength(i) + 1; // one for '\n'
 522
 523     pos += x;
 524     return pos;
 525 }
 526
 527 int wxTextCtrl::GetLineLength(long lineNo) const
 528 {
 529     wxString str = GetLineText (lineNo);
 530     return (int) str.Length();
 531 }
 532
 533 int wxTextCtrl::GetNumberOfLines() const
 534 {
 535     if (m_windowStyle & wxTE_MULTILINE)
 536     {
 537         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 538         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 539
 540         if (text)
 541         {
 542             int currentLine = 0;
 543             for (int i = 0; i < len; i++ )
 544             {
 545                 if (text[i] == '\n')
 546                     currentLine++;
 547             }
 548             g_free( text );
 549
 550             // currentLine is 0 based, add 1 to get number of lines
 551             return currentLine + 1;
 552         }
 553         else
 554         {
 555             return 0;
 556         }
 557     }
 558     else
 559     {
 560         return 1;
 561     }
 562 }
 563
 564 void wxTextCtrl::SetInsertionPoint( long pos )
 565 {
 566     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 567
 568     if (m_windowStyle & wxTE_MULTILINE)
 569     {
 570         /* seems to be broken in GTK 1.0.X:
 571            gtk_text_set_point( GTK_TEXT(m_text), (int)pos ); */
 572
 573         gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 574           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 575
 576         /* we fake a set_point by inserting and deleting. as the user
 577            isn't supposed to get to know about thos non-sense, we
 578            disconnect so that no events are sent to the user program. */
 579
 580         gint tmp = (gint)pos;
 581         gtk_editable_insert_text( GTK_EDITABLE(m_text), " ", 1, &tmp );
 582         gtk_editable_delete_text( GTK_EDITABLE(m_text), tmp-1, tmp );
 583
 584         gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 585           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 586
 587         /* bring editable's cursor uptodate. another bug in GTK. */
 588
 589         GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 590     }
 591     else
 592     {
 593         gtk_entry_set_position( GTK_ENTRY(m_text), (int)pos );
 594
 595         /* bring editable's cursor uptodate. bug in GTK. */
 596
 597         GTK_EDITABLE(m_text)->current_pos = (guint32)pos;
 598     }
 599 }
 600
 601 void wxTextCtrl::SetInsertionPointEnd()
 602 {
 603     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 604
 605     if (m_windowStyle & wxTE_MULTILINE)
 606         SetInsertionPoint(gtk_text_get_length(GTK_TEXT(m_text)));
 607     else
 608         gtk_entry_set_position( GTK_ENTRY(m_text), -1 );
 609 }
 610
 611 void wxTextCtrl::SetEditable( bool editable )
 612 {
 613     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 614
 615     if (m_windowStyle & wxTE_MULTILINE)
 616         gtk_text_set_editable( GTK_TEXT(m_text), editable );
 617     else
 618         gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
 619 }
 620
 621 bool wxTextCtrl::Enable( bool enable )
 622 {
 623     if (!wxWindowBase::Enable(enable))
 624     {
 625         // nothing to do
 626         return FALSE;
 627     }
 628
 629     if (m_windowStyle & wxTE_MULTILINE)
 630     {
 631         gtk_text_set_editable( GTK_TEXT(m_text), enable );
 632     }
 633     else
 634     {
 635         gtk_widget_set_sensitive( m_text, enable );
 636     }
 637
 638     return TRUE;
 639 }
 640
 641 void wxTextCtrl::DiscardEdits()
 642 {
 643     m_modified = FALSE;
 644 }
 645
 646 void wxTextCtrl::SetSelection( long from, long to )
 647 {
 648     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 649
 650     if ( (m_windowStyle & wxTE_MULTILINE) &&
 651          !GTK_TEXT(m_text)->line_start_cache )
 652     {
 653         // tell the programmer that it didn't work
 654         wxLogDebug(_T("Can't call SetSelection() before realizing the control"));
 655         return;
 656     }
 657
 658     gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 659 }
 660
 661 void wxTextCtrl::ShowPosition( long WXUNUSED(pos) )
 662 {
 663 //    SetInsertionPoint( pos );
 664 }
 665
 666 long wxTextCtrl::GetInsertionPoint() const
 667 {
 668     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
 669
 670     return (long) GTK_EDITABLE(m_text)->current_pos;
 671 }
 672
 673 long wxTextCtrl::GetLastPosition() const
 674 {
 675     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
 676
 677     int pos = 0;
 678     if (m_windowStyle & wxTE_MULTILINE)
 679         pos = gtk_text_get_length( GTK_TEXT(m_text) );
 680     else
 681         pos = GTK_ENTRY(m_text)->text_length;
 682
 683     return (long)pos;
 684 }
 685
 686 void wxTextCtrl::Remove( long from, long to )
 687 {
 688     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 689
 690     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 691 }
 692
 693 void wxTextCtrl::Replace( long from, long to, const wxString &value )
 694 {
 695     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 696
 697     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 698
 699     if (!value.IsEmpty())
 700     {
 701         gint pos = (gint)from;
 702 #if wxUSE_UNICODE
 703         wxWX2MBbuf buf = value.mbc_str();
 704         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &pos );
 705 #else
 706         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &pos );
 707 #endif
 708     }
 709 }
 710
 711 void wxTextCtrl::Cut()
 712 {
 713     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 714
 715 #if (GTK_MINOR_VERSION > 0)
 716     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text) );
 717 #else
 718     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text), 0 );
 719 #endif
 720 }
 721
 722 void wxTextCtrl::Copy()
 723 {
 724     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 725
 726 #if (GTK_MINOR_VERSION > 0)
 727     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text) );
 728 #else
 729     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text), 0 );
 730 #endif
 731 }
 732
 733 void wxTextCtrl::Paste()
 734 {
 735     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 736
 737 #if (GTK_MINOR_VERSION > 0)
 738     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text) );
 739 #else
 740     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text), 0 );
 741 #endif
 742 }
 743
 744 bool wxTextCtrl::CanCopy() const
 745 {
 746     // Can copy if there's a selection
 747     long from, to;
 748     GetSelection(& from, & to);
 749     return (from != to) ;
 750 }
 751
 752 bool wxTextCtrl::CanCut() const
 753 {
 754     // Can cut if there's a selection
 755     long from, to;
 756     GetSelection(& from, & to);
 757     return (from != to) && (IsEditable());
 758 }
 759
 760 bool wxTextCtrl::CanPaste() const
 761 {
 762     return IsEditable() ;
 763 }
 764
 765 // Undo/redo
 766 void wxTextCtrl::Undo()
 767 {
 768     // TODO
 769     wxFAIL_MSG( wxT("wxTextCtrl::Undo not implemented") );
 770 }
 771
 772 void wxTextCtrl::Redo()
 773 {
 774     // TODO
 775     wxFAIL_MSG( wxT("wxTextCtrl::Redo not implemented") );
 776 }
 777
 778 bool wxTextCtrl::CanUndo() const
 779 {
 780     // TODO
 781     wxFAIL_MSG( wxT("wxTextCtrl::CanUndo not implemented") );
 782     return FALSE;
 783 }
 784
 785 bool wxTextCtrl::CanRedo() const
 786 {
 787     // TODO
 788     wxFAIL_MSG( wxT("wxTextCtrl::CanRedo not implemented") );
 789     return FALSE;
 790 }
 791
 792 // If the return values from and to are the same, there is no
 793 // selection.
 794 void wxTextCtrl::GetSelection(long* from, long* to) const
 795 {
 796     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 797
 798     if (!(GTK_EDITABLE(m_text)->has_selection))
 799     {
 800         long i = GetInsertionPoint();
 801         if (from) *from = i;
 802         if (to)   *to = i;
 803         return;
 804     }
 805
 806     if (from) *from = (long) GTK_EDITABLE(m_text)->selection_start_pos;
 807     if (to)   *to = (long) GTK_EDITABLE(m_text)->selection_end_pos;
 808 }
 809
 810 bool wxTextCtrl::IsEditable() const
 811 {
 812     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
 813
 814     return GTK_EDITABLE(m_text)->editable;
 815 }
 816
 817 bool wxTextCtrl::IsModified() const
 818 {
 819     return m_modified;
 820 }
 821
 822 void wxTextCtrl::Clear()
 823 {
 824     SetValue( wxT("") );
 825 }
 826
 827 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
 828 {
 829     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 830
 831     if ((key_event.KeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
 832     {
 833         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
 834         event.SetEventObject(this);
 835         event.SetString(GetValue());
 836         if (GetEventHandler()->ProcessEvent(event)) return;
 837     }
 838
 839     if ((key_event.KeyCode() == WXK_RETURN) && !(m_windowStyle & wxTE_MULTILINE))
 840     {
 841         wxWindow *top_frame = m_parent;
 842         while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
 843             top_frame = top_frame->GetParent();
 844         GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
 845
 846         if (window->default_widget)
 847         {
 848             gtk_widget_activate (window->default_widget);
 849             return;
 850         }
 851     }
 852
 853     key_event.Skip();
 854 }
 855
 856 GtkWidget* wxTextCtrl::GetConnectWidget()
 857 {
 858     return GTK_WIDGET(m_text);
 859 }
 860
 861 bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
 862 {
 863     if (m_windowStyle & wxTE_MULTILINE)
 864         return (window == GTK_TEXT(m_text)->text_area);
 865     else
 866         return (window == GTK_ENTRY(m_text)->text_area);
 867 }
 868
 869 // the font will change for subsequent text insertiongs
 870 bool wxTextCtrl::SetFont( const wxFont &font )
 871 {
 872     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
 873
 874     if ( !wxWindowBase::SetFont(font) )
 875     {
 876         // font didn't change, nothing to do
 877         return FALSE;
 878     }
 879
 880     if ( m_windowStyle & wxTE_MULTILINE )
 881     {
 882         m_updateFont = TRUE;
 883
 884         ChangeFontGlobally();
 885     }
 886
 887     return TRUE;
 888 }
 889
 890 void wxTextCtrl::ChangeFontGlobally()
 891 {
 892     // this method is very inefficient and hence should be called as rarely as
 893     // possible!
 894     wxASSERT_MSG( (m_windowStyle & wxTE_MULTILINE) && m_updateFont,
 895                   _T("shouldn't be called for single line controls") );
 896
 897     wxString value = GetValue();
 898     if ( !value.IsEmpty() )
 899     {
 900         Clear();
 901         AppendText(value);
 902
 903         m_updateFont = FALSE;
 904     }
 905 }
 906
 907 void wxTextCtrl::UpdateFontIfNeeded()
 908 {
 909     if ( m_updateFont )
 910         ChangeFontGlobally();
 911 }
 912
 913 bool wxTextCtrl::SetForegroundColour( const wxColour &WXUNUSED(colour) )
 914 {
 915     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
 916
 917     // doesn't work
 918     return FALSE;
 919 }
 920
 921 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
 922 {
 923     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
 924
 925     wxControl::SetBackgroundColour( colour );
 926
 927     if (!m_widget->window)
 928         return FALSE;
 929
 930     wxColour sysbg = wxSystemSettings::GetSystemColour( wxSYS_COLOUR_BTNFACE );
 931     if (sysbg.Red() == colour.Red() &&
 932         sysbg.Green() == colour.Green() &&
 933         sysbg.Blue() == colour.Blue())
 934     {
 935         return FALSE; // FIXME or TRUE?
 936     }
 937
 938     if (!m_backgroundColour.Ok())
 939         return FALSE;
 940
 941     if (m_windowStyle & wxTE_MULTILINE)
 942     {
 943         GdkWindow *window = GTK_TEXT(m_text)->text_area;
 944         if (!window)
 945             return FALSE;
 946         m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
 947         gdk_window_set_background( window, m_backgroundColour.GetColor() );
 948         gdk_window_clear( window );
 949     }
 950
 951     return TRUE;
 952 }
 953
 954 void wxTextCtrl::ApplyWidgetStyle()
 955 {
 956     if (m_windowStyle & wxTE_MULTILINE)
 957     {
 958         // how ?
 959     }
 960     else
 961     {
 962         SetWidgetStyle();
 963         gtk_widget_set_style( m_text, m_widgetStyle );
 964     }
 965 }
 966
 967 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
 968 {
 969     Cut();
 970 }
 971
 972 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
 973 {
 974     Copy();
 975 }
 976
 977 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
 978 {
 979     Paste();
 980 }
 981
 982 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
 983 {
 984     Undo();
 985 }
 986
 987 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
 988 {
 989     Redo();
 990 }
 991
 992 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
 993 {
 994     event.Enable( CanCut() );
 995 }
 996
 997 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
 998 {
 999     event.Enable( CanCopy() );
1000 }
1001
1002 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1003 {
1004     event.Enable( CanPaste() );
1005 }
1006
1007 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1008 {
1009     event.Enable( CanUndo() );
1010 }
1011
1012 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1013 {
1014     event.Enable( CanRedo() );
1015 }
1016
1017 void wxTextCtrl::OnInternalIdle()
1018 {
1019     wxCursor cursor = m_cursor;
1020     if (g_globalCursor.Ok()) cursor = g_globalCursor;
1021
1022     if (cursor.Ok())
1023     {
1024         GdkWindow *window = (GdkWindow*) NULL;
1025         if (HasFlag(wxTE_MULTILINE))
1026             window = GTK_TEXT(m_text)->text_area;
1027         else
1028             window = GTK_ENTRY(m_text)->text_area;
1029
1030         if (window)
1031             gdk_window_set_cursor( window, cursor.GetCursor() );
1032
1033         if (!g_globalCursor.Ok())
1034             cursor = *wxSTANDARD_CURSOR;
1035
1036         window = m_widget->window;
1037         if ((window) && !(GTK_WIDGET_NO_WINDOW(m_widget)))
1038             gdk_window_set_cursor( window, cursor.GetCursor() );
1039     }
1040
1041     UpdateWindowUI();
1042 }
1043
1044 wxSize wxTextCtrl::DoGetBestSize() const
1045 {
1046     // FIXME should be different for multi-line controls...
1047     wxSize ret( wxControl::DoGetBestSize() );
1048     return wxSize(80, ret.y);
1049 }