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