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