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
  40 //-----------------------------------------------------------------------------
  41 //  "changed"
  42 //-----------------------------------------------------------------------------
  43
  44 static void
  45 gtk_text_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
  46 {
  47     if (!win->m_hasVMT) return;
  48
  49     if (g_isIdle)
  50         wxapp_install_idle_handler();
  51
  52     win->SetModified();
  53
  54     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->GetId() );
  55     event.SetString( win->GetValue() );
  56     event.SetEventObject( win );
  57     win->GetEventHandler()->ProcessEvent( event );
  58 }
  59
  60 //-----------------------------------------------------------------------------
  61 // "changed" from vertical scrollbar
  62 //-----------------------------------------------------------------------------
  63
  64 static void
  65 gtk_scrollbar_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
  66 {
  67     if (!win->m_hasVMT) return;
  68
  69     if (g_isIdle)
  70         wxapp_install_idle_handler();
  71
  72     win->CalculateScrollbar();
  73 }
  74
  75 //-----------------------------------------------------------------------------
  76 //  wxTextCtrl
  77 //-----------------------------------------------------------------------------
  78
  79 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl,wxControl)
  80
  81 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
  82     EVT_CHAR(wxTextCtrl::OnChar)
  83
  84     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
  85     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
  86     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
  87     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
  88     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
  89
  90     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
  91     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
  92     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
  93     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
  94     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
  95 END_EVENT_TABLE()
  96
  97 #if wxUSE_STD_IOSTREAM
  98 wxTextCtrl::wxTextCtrl() : streambuf()
  99 {
 100     if (allocate()) setp(base(),ebuf());
 101
 102     m_modified = FALSE;
 103 }
 104 #else
 105 wxTextCtrl::wxTextCtrl()
 106 {
 107     m_modified = FALSE;
 108 }
 109 #endif
 110
 111 #if wxUSE_STD_IOSTREAM
 112 wxTextCtrl::wxTextCtrl( wxWindow *parent, wxWindowID id, const wxString &value,
 113       const wxPoint &pos, const wxSize &size,
 114       int style, const wxValidator& validator, const wxString &name ) : streambuf()
 115 {
 116     if (allocate()) setp(base(),ebuf());
 117
 118     m_modified = FALSE;
 119     Create( parent, id, value, pos, size, style, validator, name );
 120 }
 121 #else
 122 wxTextCtrl::wxTextCtrl( wxWindow *parent, wxWindowID id, const wxString &value,
 123       const wxPoint &pos, const wxSize &size,
 124       int style, const wxValidator& validator, const wxString &name )
 125 {
 126     m_modified = FALSE;
 127     Create( parent, id, value, pos, size, style, validator, name );
 128 }
 129 #endif
 130
 131 bool wxTextCtrl::Create( wxWindow *parent, wxWindowID id, const wxString &value,
 132       const wxPoint &pos, const wxSize &size,
 133       int style, const wxValidator& validator, const wxString &name )
 134 {
 135     m_needParent = TRUE;
 136     m_acceptsFocus = TRUE;
 137
 138     PreCreation( parent, id, pos, size, style, name );
 139
 140 #if wxUSE_VALIDATORS
 141     SetValidator( validator );
 142 #endif // wxUSE_VALIDATORS
 143
 144     m_vScrollbarVisible = FALSE;
 145
 146     bool multi_line = (style & wxTE_MULTILINE) != 0;
 147     if (multi_line)
 148     {
 149 #if (GTK_MINOR_VERSION > 2)
 150         /* a multi-line edit control: create a vertical scrollbar by default and
 151            horizontal if requested */
 152         bool bHasHScrollbar = (style & wxHSCROLL) != 0;
 153 #else
 154         bool bHasHScrollbar = FALSE;
 155 #endif
 156
 157         /* create our control ... */
 158         m_text = gtk_text_new( (GtkAdjustment *) NULL, (GtkAdjustment *) NULL );
 159
 160         /* ... and put into the upper left hand corner of the table */
 161         m_widget = gtk_table_new(bHasHScrollbar ? 2 : 1, 2, FALSE);
 162         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 163         gtk_table_attach( GTK_TABLE(m_widget), m_text, 0, 1, 0, 1,
 164                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 165                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 166                        0, 0);
 167
 168         /* always wrap words */
 169         gtk_text_set_word_wrap( GTK_TEXT(m_text), TRUE );
 170
 171 #if (GTK_MINOR_VERSION > 2)
 172         /* put the horizontal scrollbar in the lower left hand corner */
 173         if (bHasHScrollbar)
 174         {
 175             GtkWidget *hscrollbar = gtk_hscrollbar_new(GTK_TEXT(m_text)->hadj);
 176             GTK_WIDGET_UNSET_FLAGS( hscrollbar, GTK_CAN_FOCUS );
 177             gtk_table_attach(GTK_TABLE(m_widget), hscrollbar, 0, 1, 1, 2,
 178                        (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
 179                        GTK_FILL,
 180                        0, 0);
 181             gtk_widget_show(hscrollbar);
 182
 183             /* don't wrap lines, otherwise we wouldn't need the scrollbar */
 184             gtk_text_set_line_wrap( GTK_TEXT(m_text), FALSE );
 185         }
 186 #endif
 187
 188         /* finally, put the vertical scrollbar in the upper right corner */
 189         m_vScrollbar = gtk_vscrollbar_new( GTK_TEXT(m_text)->vadj );
 190         GTK_WIDGET_UNSET_FLAGS( m_vScrollbar, GTK_CAN_FOCUS );
 191         gtk_table_attach(GTK_TABLE(m_widget), m_vScrollbar, 1, 2, 0, 1,
 192                      GTK_FILL,
 193                      (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
 194                      0, 0);
 195     }
 196     else
 197     {
 198         /* a single-line text control: no need for scrollbars */
 199         m_widget =
 200           m_text = gtk_entry_new();
 201     }
 202
 203     wxSize newSize = size;
 204     if (newSize.x == -1) newSize.x = 80;
 205     if (newSize.y == -1) newSize.y = 26;
 206     SetSize( newSize.x, newSize.y );
 207
 208     m_parent->DoAddChild( this );
 209
 210     PostCreation();
 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     Show( TRUE );
 271
 272     return TRUE;
 273 }
 274
 275 void wxTextCtrl::CalculateScrollbar()
 276 {
 277     if ((m_windowStyle & wxTE_MULTILINE) == 0) return;
 278
 279     GtkAdjustment *adj = GTK_TEXT(m_text)->vadj;
 280
 281     if (adj->upper - adj->page_size < 0.8)
 282     {
 283         if (m_vScrollbarVisible)
 284         {
 285             gtk_widget_hide( m_vScrollbar );
 286             m_vScrollbarVisible = FALSE;
 287         }
 288     }
 289     else
 290     {
 291         if (!m_vScrollbarVisible)
 292         {
 293             gtk_widget_show( m_vScrollbar );
 294             m_vScrollbarVisible = TRUE;
 295         }
 296     }
 297 }
 298
 299 wxString wxTextCtrl::GetValue() const
 300 {
 301     wxCHECK_MSG( m_text != NULL, _T(""), _T("invalid text ctrl") );
 302
 303     wxString tmp;
 304     if (m_windowStyle & wxTE_MULTILINE)
 305     {
 306         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 307         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 308         tmp = wxString(text,*wxConvCurrent);
 309         g_free( text );
 310     }
 311     else
 312     {
 313         tmp = wxString(gtk_entry_get_text( GTK_ENTRY(m_text) ),*wxConvCurrent);
 314     }
 315     return tmp;
 316 }
 317
 318 void wxTextCtrl::SetValue( const wxString &value )
 319 {
 320     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 321
 322     gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 323       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 324
 325     wxString tmp = _T("");
 326     if (!value.IsNull()) tmp = value;
 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 = tmp.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), tmp.mbc_str(), tmp.Length(), &len );
 337 #endif
 338     }
 339     else
 340     {
 341         gtk_entry_set_text( GTK_ENTRY(m_text), tmp.mbc_str() );
 342     }
 343
 344     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 345       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 346 }
 347
 348 void wxTextCtrl::WriteText( const wxString &text )
 349 {
 350     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 351
 352     if (text.IsEmpty()) return;
 353
 354     gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 355       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 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     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 391       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 392 }
 393
 394 void wxTextCtrl::AppendText( const wxString &text )
 395 {
 396     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 397
 398     if (text.IsEmpty()) return;
 399
 400     gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 401       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 402
 403     if (m_windowStyle & wxTE_MULTILINE)
 404     {
 405         bool hasSpecialAttributes = m_font.Ok() ||
 406                                     m_foregroundColour.Ok() ||
 407                                     m_backgroundColour.Ok();
 408         if ( hasSpecialAttributes )
 409         {
 410              gtk_text_insert( GTK_TEXT(m_text),
 411                               m_font.GetInternalFont(),
 412                               m_foregroundColour.GetColor(),
 413                               m_backgroundColour.GetColor(),
 414                               text, text.length());
 415
 416         }
 417         else
 418         {
 419             /* we'll insert at the last position */
 420             gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 421 #if wxUSE_UNICODE
 422             wxWX2MBbuf buf = text.mbc_str();
 423             gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &len );
 424 #else
 425             gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
 426 #endif
 427         }
 428
 429         /* bring editable's cursor uptodate. bug in GTK. */
 430         GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 431     }
 432     else
 433     {
 434         gtk_entry_append_text( GTK_ENTRY(m_text), text.mbc_str() );
 435     }
 436
 437     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 438       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 439 }
 440
 441 bool wxTextCtrl::LoadFile( const wxString &file )
 442 {
 443     wxCHECK_MSG( m_text != NULL, FALSE, _T("invalid text ctrl") );
 444
 445     if (!wxFileExists(file)) return FALSE;
 446
 447     Clear();
 448
 449     FILE *fp = (FILE*) NULL;
 450     struct stat statb;
 451
 452     if ((stat (FNSTRINGCAST file.fn_str(), &statb) == -1) || (statb.st_mode & S_IFMT) != S_IFREG ||
 453         !(fp = fopen (FNSTRINGCAST file.fn_str(), "r")))
 454     {
 455         return FALSE;
 456     }
 457     else
 458     {
 459         gint len = statb.st_size;
 460         char *text;
 461         if (!(text = (char*)malloc ((unsigned) (len + 1))))
 462         {
 463             fclose (fp);
 464             return FALSE;
 465         }
 466         if (fread (text, sizeof (char), len, fp) != (size_t) len)
 467         {
 468         }
 469         fclose (fp);
 470
 471         text[len] = 0;
 472
 473         gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 474           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 475
 476         if (m_windowStyle & wxTE_MULTILINE)
 477         {
 478             gint pos = 0;
 479             gtk_editable_insert_text( GTK_EDITABLE(m_text), text, len, &pos );
 480         }
 481         else
 482         {
 483             gtk_entry_set_text( GTK_ENTRY(m_text), text );
 484         }
 485
 486         gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 487           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 488
 489         free (text);
 490         m_modified = FALSE;
 491         return TRUE;
 492     }
 493     return FALSE;
 494 }
 495
 496 bool wxTextCtrl::SaveFile( const wxString &file )
 497 {
 498     wxCHECK_MSG( m_text != NULL, FALSE, _T("invalid text ctrl") );
 499
 500     if (file == _T("")) return FALSE;
 501
 502     FILE *fp;
 503
 504     if (!(fp = fopen (FNSTRINGCAST file.fn_str(), "w")))
 505     {
 506         return FALSE;
 507     }
 508     else
 509     {
 510       char *text = (char*) NULL;
 511       gint len = 0;
 512
 513       if (m_windowStyle & wxTE_MULTILINE)
 514       {
 515           len = gtk_text_get_length( GTK_TEXT(m_text) );
 516           text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 517       }
 518       else
 519       {
 520           text = gtk_entry_get_text( GTK_ENTRY(m_text) );
 521       }
 522
 523       if (fwrite (text, sizeof (char), len, fp) != (size_t) len)
 524       {
 525           // Did not write whole file
 526       }
 527
 528       // Make sure newline terminates the file
 529       if (text[len - 1] != '\n')
 530           fputc ('\n', fp);
 531
 532       fclose (fp);
 533
 534       if (m_windowStyle & wxTE_MULTILINE) g_free( text );
 535
 536       m_modified = FALSE;
 537       return TRUE;
 538     }
 539
 540     return TRUE;
 541 }
 542
 543 wxString wxTextCtrl::GetLineText( long lineNo ) const
 544 {
 545   if (m_windowStyle & wxTE_MULTILINE)
 546   {
 547     gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 548     char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 549
 550     if (text)
 551     {
 552         wxString buf(_T(""));
 553         long i;
 554         int currentLine = 0;
 555         for (i = 0; currentLine != lineNo && text[i]; i++ )
 556           if (text[i] == '\n')
 557             currentLine++;
 558         // Now get the text
 559         int j;
 560         for (j = 0; text[i] && text[i] != '\n'; i++, j++ )
 561             buf += text[i];
 562
 563         g_free( text );
 564         return buf;
 565     }
 566     else
 567       return wxEmptyString;
 568   }
 569   else
 570   {
 571     if (lineNo == 0) return GetValue();
 572     return wxEmptyString;
 573   }
 574 }
 575
 576 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 577 {
 578   /* If you implement this, don't forget to update the documentation!
 579    * (file docs/latex/wx/text.tex) */
 580     wxFAIL_MSG( _T("wxTextCtrl::OnDropFiles not implemented") );
 581 }
 582
 583 long wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
 584 {
 585     if ( m_windowStyle & wxTE_MULTILINE )
 586     {
 587         wxString text = GetValue();
 588
 589         // cast to prevent warning. But pos really should've been unsigned.
 590         if( (unsigned long)pos > text.Len()  )
 591             return FALSE;
 592
 593         *x=0;   // First Col
 594         *y=0;   // First Line
 595
 596         const wxChar* stop = text.c_str() + pos;
 597         for ( const wxChar *p = text.c_str(); p < stop; p++ )
 598         {
 599             if (*p == _T('\n'))
 600             {
 601                 (*y)++;
 602                 *x=0;
 603             }
 604             else
 605                 (*x)++;
 606         }
 607     }
 608     else // single line control
 609     {
 610         if ( pos <= GTK_ENTRY(m_text)->text_length )
 611         {
 612             *y = 0;
 613             *x = pos;
 614         }
 615         else
 616         {
 617             // index out of bounds
 618             return FALSE;
 619         }
 620     }
 621
 622     return TRUE;
 623 }
 624
 625 long wxTextCtrl::XYToPosition(long x, long y ) const
 626 {
 627     if (!(m_windowStyle & wxTE_MULTILINE)) return 0;
 628
 629     long pos=0;
 630     for( int i=0; i<y; i++ ) pos += GetLineLength(i) + 1; // one for '\n'
 631
 632     pos += x;
 633     return pos;
 634 }
 635
 636 int wxTextCtrl::GetLineLength(long lineNo) const
 637 {
 638     wxString str = GetLineText (lineNo);
 639     return (int) str.Length();
 640 }
 641
 642 int wxTextCtrl::GetNumberOfLines() const
 643 {
 644     if (m_windowStyle & wxTE_MULTILINE)
 645     {
 646         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 647         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 648
 649         if (text)
 650         {
 651             int currentLine = 0;
 652             for (int i = 0; i < len; i++ )
 653             {
 654                 if (text[i] == '\n')
 655                     currentLine++;
 656             }
 657             g_free( text );
 658
 659             // currentLine is 0 based, add 1 to get number of lines
 660             return currentLine + 1;
 661         }
 662         else
 663         {
 664             return 0;
 665         }
 666     }
 667     else
 668     {
 669         return 1;
 670     }
 671 }
 672
 673 void wxTextCtrl::SetInsertionPoint( long pos )
 674 {
 675     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 676
 677     if (m_windowStyle & wxTE_MULTILINE)
 678     {
 679         /* seems to be broken in GTK 1.0.X:
 680            gtk_text_set_point( GTK_TEXT(m_text), (int)pos ); */
 681
 682         gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 683           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 684
 685         /* we fake a set_point by inserting and deleting. as the user
 686            isn't supposed to get to know about thos non-sense, we
 687            disconnect so that no events are sent to the user program. */
 688
 689         gint tmp = (gint)pos;
 690         gtk_editable_insert_text( GTK_EDITABLE(m_text), " ", 1, &tmp );
 691         gtk_editable_delete_text( GTK_EDITABLE(m_text), tmp-1, tmp );
 692
 693         gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 694           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 695
 696         /* bring editable's cursor uptodate. another bug in GTK. */
 697
 698         GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 699     }
 700     else
 701     {
 702         gtk_entry_set_position( GTK_ENTRY(m_text), (int)pos );
 703
 704         /* bring editable's cursor uptodate. bug in GTK. */
 705
 706         GTK_EDITABLE(m_text)->current_pos = pos;
 707     }
 708 }
 709
 710 void wxTextCtrl::SetInsertionPointEnd()
 711 {
 712     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 713
 714     if (m_windowStyle & wxTE_MULTILINE)
 715         SetInsertionPoint(gtk_text_get_length(GTK_TEXT(m_text)));
 716     else
 717         gtk_entry_set_position( GTK_ENTRY(m_text), -1 );
 718 }
 719
 720 void wxTextCtrl::SetEditable( bool editable )
 721 {
 722     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 723
 724     if (m_windowStyle & wxTE_MULTILINE)
 725         gtk_text_set_editable( GTK_TEXT(m_text), editable );
 726     else
 727         gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
 728 }
 729
 730 void wxTextCtrl::SetSelection( long from, long to )
 731 {
 732     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 733
 734     gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 735 }
 736
 737 void wxTextCtrl::ShowPosition( long WXUNUSED(pos) )
 738 {
 739 //    SetInsertionPoint( pos );
 740 }
 741
 742 long wxTextCtrl::GetInsertionPoint() const
 743 {
 744     wxCHECK_MSG( m_text != NULL, 0, _T("invalid text ctrl") );
 745
 746     return (long) GTK_EDITABLE(m_text)->current_pos;
 747 }
 748
 749 long wxTextCtrl::GetLastPosition() const
 750 {
 751     wxCHECK_MSG( m_text != NULL, 0, _T("invalid text ctrl") );
 752
 753     int pos = 0;
 754     if (m_windowStyle & wxTE_MULTILINE)
 755         pos = gtk_text_get_length( GTK_TEXT(m_text) );
 756     else
 757         pos = GTK_ENTRY(m_text)->text_length;
 758
 759     return (long)pos;
 760 }
 761
 762 void wxTextCtrl::Remove( long from, long to )
 763 {
 764     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 765
 766     gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 767       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 768
 769     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 770
 771     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 772       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 773 }
 774
 775 void wxTextCtrl::Replace( long from, long to, const wxString &value )
 776 {
 777     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 778
 779     gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 780       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 781
 782     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 783
 784     if (!value.IsEmpty())
 785     {
 786         gint pos = (gint)from;
 787 #if wxUSE_UNICODE
 788         wxWX2MBbuf buf = value.mbc_str();
 789         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &pos );
 790 #else
 791         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &pos );
 792 #endif
 793     }
 794
 795     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 796       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 797 }
 798
 799 void wxTextCtrl::Cut()
 800 {
 801     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 802
 803     gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 804       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 805
 806 #if (GTK_MINOR_VERSION > 0)
 807     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text) );
 808 #else
 809     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text), 0 );
 810 #endif
 811
 812     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 813       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 814 }
 815
 816 void wxTextCtrl::Copy()
 817 {
 818     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 819
 820 #if (GTK_MINOR_VERSION > 0)
 821     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text) );
 822 #else
 823     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text), 0 );
 824 #endif
 825 }
 826
 827 void wxTextCtrl::Paste()
 828 {
 829     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 830
 831     gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 832       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 833
 834 #if (GTK_MINOR_VERSION > 0)
 835     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text) );
 836 #else
 837     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text), 0 );
 838 #endif
 839
 840     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 841       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 842 }
 843
 844 bool wxTextCtrl::CanCopy() const
 845 {
 846     // Can copy if there's a selection
 847     long from, to;
 848     GetSelection(& from, & to);
 849     return (from != to) ;
 850 }
 851
 852 bool wxTextCtrl::CanCut() const
 853 {
 854     // Can cut if there's a selection
 855     long from, to;
 856     GetSelection(& from, & to);
 857     return (from != to) ;
 858 }
 859
 860 bool wxTextCtrl::CanPaste() const
 861 {
 862     return IsEditable() ;
 863 }
 864
 865 // Undo/redo
 866 void wxTextCtrl::Undo()
 867 {
 868     // TODO
 869     wxFAIL_MSG( _T("wxTextCtrl::Undo not implemented") );
 870 }
 871
 872 void wxTextCtrl::Redo()
 873 {
 874     // TODO
 875     wxFAIL_MSG( _T("wxTextCtrl::Redo not implemented") );
 876 }
 877
 878 bool wxTextCtrl::CanUndo() const
 879 {
 880     // TODO
 881     wxFAIL_MSG( _T("wxTextCtrl::CanUndo not implemented") );
 882     return FALSE;
 883 }
 884
 885 bool wxTextCtrl::CanRedo() const
 886 {
 887     // TODO
 888     wxFAIL_MSG( _T("wxTextCtrl::CanRedo not implemented") );
 889     return FALSE;
 890 }
 891
 892 // If the return values from and to are the same, there is no
 893 // selection.
 894 void wxTextCtrl::GetSelection(long* from, long* to) const
 895 {
 896     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 897
 898     if (!(GTK_EDITABLE(m_text)->has_selection))
 899     {
 900         if (from) *from = 0;
 901         if (to)   *to = 0;
 902         return;
 903     }
 904
 905     if (from) *from = (long) GTK_EDITABLE(m_text)->selection_start_pos;
 906     if (to)   *to = (long) GTK_EDITABLE(m_text)->selection_end_pos;
 907 }
 908
 909 bool wxTextCtrl::IsEditable() const
 910 {
 911     wxCHECK_MSG( m_text != NULL, FALSE, _T("invalid text ctrl") );
 912
 913     return GTK_EDITABLE(m_text)->editable;
 914 }
 915
 916 void wxTextCtrl::Clear()
 917 {
 918     SetValue( _T("") );
 919 }
 920
 921 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
 922 {
 923     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 924
 925     if ((key_event.KeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
 926     {
 927         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
 928         event.SetEventObject(this);
 929         if (GetEventHandler()->ProcessEvent(event)) return;
 930     }
 931
 932     key_event.Skip();
 933 }
 934
 935 GtkWidget* wxTextCtrl::GetConnectWidget()
 936 {
 937     return GTK_WIDGET(m_text);
 938 }
 939
 940 bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
 941 {
 942     if (m_windowStyle & wxTE_MULTILINE)
 943         return (window == GTK_TEXT(m_text)->text_area);
 944     else
 945         return (window == GTK_ENTRY(m_text)->text_area);
 946 }
 947
 948 // the font will change for subsequent text insertiongs
 949 bool wxTextCtrl::SetFont( const wxFont &font )
 950 {
 951     wxCHECK_MSG( m_text != NULL, FALSE, _T("invalid text ctrl") );
 952
 953     if ( !wxWindowBase::SetFont(font) )
 954     {
 955         // font didn't change, nothing to do
 956         return FALSE;
 957     }
 958
 959     if ( m_windowStyle & wxTE_MULTILINE )
 960     {
 961         // for compatibility with other ports: the font is a global controls
 962         // characteristic, so change the font globally
 963         wxString value = GetValue();
 964         if ( !value.IsEmpty() )
 965         {
 966             Clear();
 967
 968             AppendText(value);
 969         }
 970     }
 971
 972     return TRUE;
 973 }
 974
 975 bool wxTextCtrl::SetForegroundColour( const wxColour &WXUNUSED(colour) )
 976 {
 977     wxCHECK_MSG( m_text != NULL, FALSE, _T("invalid text ctrl") );
 978
 979     // doesn't work
 980     return FALSE;
 981 }
 982
 983 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
 984 {
 985     wxCHECK_MSG( m_text != NULL, FALSE, _T("invalid text ctrl") );
 986
 987     wxControl::SetBackgroundColour( colour );
 988
 989     if (!m_widget->window)
 990         return FALSE;
 991
 992     wxColour sysbg = wxSystemSettings::GetSystemColour( wxSYS_COLOUR_BTNFACE );
 993     if (sysbg.Red() == colour.Red() &&
 994         sysbg.Green() == colour.Green() &&
 995         sysbg.Blue() == colour.Blue())
 996     {
 997         return FALSE; // FIXME or TRUE?
 998     }
 999
1000     if (!m_backgroundColour.Ok())
1001         return FALSE;
1002
1003     if (m_windowStyle & wxTE_MULTILINE)
1004     {
1005         GdkWindow *window = GTK_TEXT(m_text)->text_area;
1006         if (!window)
1007             return FALSE;
1008         m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
1009         gdk_window_set_background( window, m_backgroundColour.GetColor() );
1010         gdk_window_clear( window );
1011     }
1012
1013     return TRUE;
1014 }
1015
1016 void wxTextCtrl::ApplyWidgetStyle()
1017 {
1018     if (m_windowStyle & wxTE_MULTILINE)
1019     {
1020         // how ?
1021     }
1022     else
1023     {
1024         SetWidgetStyle();
1025         gtk_widget_set_style( m_text, m_widgetStyle );
1026     }
1027 }
1028
1029 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1030 {
1031     Cut();
1032 }
1033
1034 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1035 {
1036     Copy();
1037 }
1038
1039 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1040 {
1041     Paste();
1042 }
1043
1044 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1045 {
1046     Undo();
1047 }
1048
1049 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1050 {
1051     Redo();
1052 }
1053
1054 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1055 {
1056     event.Enable( CanCut() );
1057 }
1058
1059 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1060 {
1061     event.Enable( CanCopy() );
1062 }
1063
1064 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1065 {
1066     event.Enable( CanPaste() );
1067 }
1068
1069 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1070 {
1071     event.Enable( CanUndo() );
1072 }
1073
1074 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1075 {
1076     event.Enable( CanRedo() );
1077 }