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