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         /* a multi-line edit control: create a vertical scrollbar by default and
 150            horizontal if requested */
 151         bool bHasHScrollbar = (style & wxHSCROLL) != 0;
 152
 153         /* create our control ... */
 154         m_text = gtk_text_new( (GtkAdjustment *) NULL, (GtkAdjustment *) NULL );
 155
 156         /* ... and put into the upper left hand corner of the table */
 157         m_widget = gtk_table_new(bHasHScrollbar ? 2 : 1, 2, FALSE);
 158         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 159         gtk_table_attach( GTK_TABLE(m_widget), m_text, 0, 1, 0, 1,
 160                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 161                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 162                        0, 0);
 163
 164         /* always wrap words */
 165         gtk_text_set_word_wrap( GTK_TEXT(m_text), TRUE );
 166
 167         /* put the horizontal scrollbar in the lower left hand corner */
 168         if (bHasHScrollbar)
 169         {
 170             GtkWidget *hscrollbar = gtk_hscrollbar_new(GTK_TEXT(m_text)->hadj);
 171             GTK_WIDGET_UNSET_FLAGS( hscrollbar, GTK_CAN_FOCUS );
 172             gtk_table_attach(GTK_TABLE(m_widget), hscrollbar, 0, 1, 1, 2,
 173                        (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
 174                        GTK_FILL,
 175                        0, 0);
 176             gtk_widget_show(hscrollbar);
 177
 178 #if (GTK_MINOR_VERSION > 0)
 179             /* don't wrap lines, otherwise we wouldn't need the scrollbar */
 180             gtk_text_set_line_wrap( GTK_TEXT(m_text), FALSE );
 181 #endif
 182         }
 183
 184         /* finally, put the vertical scrollbar in the upper right corner */
 185         m_vScrollbar = gtk_vscrollbar_new( GTK_TEXT(m_text)->vadj );
 186         GTK_WIDGET_UNSET_FLAGS( m_vScrollbar, GTK_CAN_FOCUS );
 187         gtk_table_attach(GTK_TABLE(m_widget), m_vScrollbar, 1, 2, 0, 1,
 188                      GTK_FILL,
 189                      (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
 190                      0, 0);
 191     }
 192     else
 193     {
 194         /* a single-line text control: no need for scrollbars */
 195         m_widget =
 196           m_text = gtk_entry_new();
 197     }
 198
 199     wxSize newSize = size;
 200     if (newSize.x == -1) newSize.x = 80;
 201     if (newSize.y == -1) newSize.y = 26;
 202     SetSize( newSize.x, newSize.y );
 203
 204     m_parent->DoAddChild( this );
 205
 206     PostCreation();
 207
 208     if (multi_line)
 209         gtk_widget_show(m_text);
 210
 211     /* we want to be notified about text changes */
 212     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 213       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 214
 215     if (multi_line)
 216     {
 217         gtk_signal_connect(GTK_OBJECT(GTK_TEXT(m_text)->vadj), "changed",
 218           (GtkSignalFunc) gtk_scrollbar_changed_callback, (gpointer) this );
 219     }
 220
 221     if (!value.IsEmpty())
 222     {
 223         gint tmp = 0;
 224
 225 #if GTK_MINOR_VERSION == 0
 226         // if we don't realize it, GTK 1.0.6 dies with a SIGSEGV in
 227         // gtk_editable_insert_text()
 228         gtk_widget_realize(m_text);
 229 #endif // GTK 1.0
 230
 231 #if wxUSE_UNICODE
 232         wxWX2MBbuf val = value.mbc_str();
 233         gtk_editable_insert_text( GTK_EDITABLE(m_text), val, strlen(val), &tmp );
 234 #else // !Unicode
 235         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &tmp );
 236 #endif // Unicode/!Unicode
 237
 238         if (multi_line)
 239         {
 240             /* bring editable's cursor uptodate. bug in GTK. */
 241
 242             GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 243         }
 244     }
 245
 246     if (style & wxTE_PASSWORD)
 247     {
 248         if (!multi_line)
 249             gtk_entry_set_visibility( GTK_ENTRY(m_text), FALSE );
 250     }
 251
 252     if (style & wxTE_READONLY)
 253     {
 254         if (!multi_line)
 255             gtk_entry_set_editable( GTK_ENTRY(m_text), FALSE );
 256     }
 257     else
 258     {
 259         if (multi_line)
 260             gtk_text_set_editable( GTK_TEXT(m_text), 1 );
 261     }
 262
 263     SetBackgroundColour( wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW) );
 264     SetForegroundColour( parent->GetForegroundColour() );
 265
 266     Show( TRUE );
 267
 268     return TRUE;
 269 }
 270
 271 void wxTextCtrl::CalculateScrollbar()
 272 {
 273     if ((m_windowStyle & wxTE_MULTILINE) == 0) return;
 274
 275     GtkAdjustment *adj = GTK_TEXT(m_text)->vadj;
 276
 277     if (adj->upper - adj->page_size < 0.8)
 278     {
 279         if (m_vScrollbarVisible)
 280         {
 281             gtk_widget_hide( m_vScrollbar );
 282             m_vScrollbarVisible = FALSE;
 283         }
 284     }
 285     else
 286     {
 287         if (!m_vScrollbarVisible)
 288         {
 289             gtk_widget_show( m_vScrollbar );
 290             m_vScrollbarVisible = TRUE;
 291         }
 292     }
 293 }
 294
 295 wxString wxTextCtrl::GetValue() const
 296 {
 297     wxCHECK_MSG( m_text != NULL, _T(""), _T("invalid text ctrl") );
 298
 299     wxString tmp;
 300     if (m_windowStyle & wxTE_MULTILINE)
 301     {
 302         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 303         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 304         tmp = wxString(text,*wxConvCurrent);
 305         g_free( text );
 306     }
 307     else
 308     {
 309         tmp = wxString(gtk_entry_get_text( GTK_ENTRY(m_text) ),*wxConvCurrent);
 310     }
 311     return tmp;
 312 }
 313
 314 void wxTextCtrl::SetValue( const wxString &value )
 315 {
 316     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 317
 318     gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 319       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 320
 321     wxString tmp = _T("");
 322     if (!value.IsNull()) tmp = value;
 323     if (m_windowStyle & wxTE_MULTILINE)
 324     {
 325         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 326         gtk_editable_delete_text( GTK_EDITABLE(m_text), 0, len );
 327         len = 0;
 328 #if wxUSE_UNICODE
 329         wxWX2MBbuf tmpbuf = tmp.mbc_str();
 330         gtk_editable_insert_text( GTK_EDITABLE(m_text), tmpbuf, strlen(tmpbuf), &len );
 331 #else
 332         gtk_editable_insert_text( GTK_EDITABLE(m_text), tmp.mbc_str(), tmp.Length(), &len );
 333 #endif
 334     }
 335     else
 336     {
 337         gtk_entry_set_text( GTK_ENTRY(m_text), tmp.mbc_str() );
 338     }
 339
 340     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 341       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 342 }
 343
 344 void wxTextCtrl::WriteText( const wxString &text )
 345 {
 346     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 347
 348     if (text.IsEmpty()) return;
 349
 350     gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 351       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 352
 353     if (m_windowStyle & wxTE_MULTILINE)
 354     {
 355         /* this moves the cursor pos to behind the inserted text */
 356         gint len = GTK_EDITABLE(m_text)->current_pos;
 357
 358 #if wxUSE_UNICODE
 359         wxWX2MBbuf buf = text.mbc_str();
 360         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &len );
 361 #else
 362         gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
 363 #endif
 364
 365         /* bring editable's cursor uptodate. bug in GTK. */
 366         GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 367     }
 368     else
 369     {
 370         /* this moves the cursor pos to behind the inserted text */
 371         gint len = GTK_EDITABLE(m_text)->current_pos;
 372 #if wxUSE_UNICODE
 373         wxWX2MBbuf buf = text.mbc_str();
 374         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &len );
 375 #else
 376         gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
 377 #endif
 378
 379         /* bring editable's cursor uptodate. bug in GTK. */
 380         GTK_EDITABLE(m_text)->current_pos += text.Len();
 381
 382         /* bring entry's cursor uptodate. bug in GTK. */
 383         gtk_entry_set_position( GTK_ENTRY(m_text), GTK_EDITABLE(m_text)->current_pos );
 384     }
 385
 386     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 387       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 388 }
 389
 390 void wxTextCtrl::AppendText( const wxString &text )
 391 {
 392     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 393
 394     if (text.IsEmpty()) return;
 395
 396     gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 397       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 398
 399     if (m_windowStyle & wxTE_MULTILINE)
 400     {
 401         bool hasSpecialAttributes = m_font.Ok() ||
 402                                     m_foregroundColour.Ok() ||
 403                                     m_backgroundColour.Ok();
 404         if ( hasSpecialAttributes )
 405         {
 406              gtk_text_insert( GTK_TEXT(m_text),
 407                               m_font.GetInternalFont(),
 408                               m_foregroundColour.GetColor(),
 409                               m_backgroundColour.GetColor(),
 410                               text, text.length());
 411
 412         }
 413         else
 414         {
 415             /* we'll insert at the last position */
 416             gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 417 #if wxUSE_UNICODE
 418             wxWX2MBbuf buf = text.mbc_str();
 419             gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &len );
 420 #else
 421             gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
 422 #endif
 423         }
 424
 425         /* bring editable's cursor uptodate. bug in GTK. */
 426         GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 427     }
 428     else
 429     {
 430         gtk_entry_append_text( GTK_ENTRY(m_text), text.mbc_str() );
 431     }
 432
 433     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 434       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 435 }
 436
 437 bool wxTextCtrl::LoadFile( const wxString &file )
 438 {
 439     wxCHECK_MSG( m_text != NULL, FALSE, _T("invalid text ctrl") );
 440
 441     if (!wxFileExists(file)) return FALSE;
 442
 443     Clear();
 444
 445     FILE *fp = (FILE*) NULL;
 446     struct stat statb;
 447
 448     if ((stat (FNSTRINGCAST file.fn_str(), &statb) == -1) || (statb.st_mode & S_IFMT) != S_IFREG ||
 449         !(fp = fopen (FNSTRINGCAST file.fn_str(), "r")))
 450     {
 451         return FALSE;
 452     }
 453     else
 454     {
 455         gint len = statb.st_size;
 456         char *text;
 457         if (!(text = (char*)malloc ((unsigned) (len + 1))))
 458         {
 459             fclose (fp);
 460             return FALSE;
 461         }
 462         if (fread (text, sizeof (char), len, fp) != (size_t) len)
 463         {
 464         }
 465         fclose (fp);
 466
 467         text[len] = 0;
 468
 469         gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 470           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 471
 472         if (m_windowStyle & wxTE_MULTILINE)
 473         {
 474             gint pos = 0;
 475             gtk_editable_insert_text( GTK_EDITABLE(m_text), text, len, &pos );
 476         }
 477         else
 478         {
 479             gtk_entry_set_text( GTK_ENTRY(m_text), text );
 480         }
 481
 482         gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 483           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 484
 485         free (text);
 486         m_modified = FALSE;
 487         return TRUE;
 488     }
 489     return FALSE;
 490 }
 491
 492 bool wxTextCtrl::SaveFile( const wxString &file )
 493 {
 494     wxCHECK_MSG( m_text != NULL, FALSE, _T("invalid text ctrl") );
 495
 496     if (file == _T("")) return FALSE;
 497
 498     FILE *fp;
 499
 500     if (!(fp = fopen (FNSTRINGCAST file.fn_str(), "w")))
 501     {
 502         return FALSE;
 503     }
 504     else
 505     {
 506       char *text = (char*) NULL;
 507       gint len = 0;
 508
 509       if (m_windowStyle & wxTE_MULTILINE)
 510       {
 511           len = gtk_text_get_length( GTK_TEXT(m_text) );
 512           text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 513       }
 514       else
 515       {
 516           text = gtk_entry_get_text( GTK_ENTRY(m_text) );
 517       }
 518
 519       if (fwrite (text, sizeof (char), len, fp) != (size_t) len)
 520       {
 521           // Did not write whole file
 522       }
 523
 524       // Make sure newline terminates the file
 525       if (text[len - 1] != '\n')
 526           fputc ('\n', fp);
 527
 528       fclose (fp);
 529
 530       if (m_windowStyle & wxTE_MULTILINE) g_free( text );
 531
 532       m_modified = FALSE;
 533       return TRUE;
 534     }
 535
 536     return TRUE;
 537 }
 538
 539 wxString wxTextCtrl::GetLineText( long lineNo ) const
 540 {
 541   if (m_windowStyle & wxTE_MULTILINE)
 542   {
 543     gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 544     char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 545
 546     if (text)
 547     {
 548         wxString buf(_T(""));
 549         long i;
 550         int currentLine = 0;
 551         for (i = 0; currentLine != lineNo && text[i]; i++ )
 552           if (text[i] == '\n')
 553             currentLine++;
 554         // Now get the text
 555         int j;
 556         for (j = 0; text[i] && text[i] != '\n'; i++, j++ )
 557             buf += text[i];
 558
 559         g_free( text );
 560         return buf;
 561     }
 562     else
 563       return wxEmptyString;
 564   }
 565   else
 566   {
 567     if (lineNo == 0) return GetValue();
 568     return wxEmptyString;
 569   }
 570 }
 571
 572 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 573 {
 574   /* If you implement this, don't forget to update the documentation!
 575    * (file docs/latex/wx/text.tex) */
 576     wxFAIL_MSG( _T("wxTextCtrl::OnDropFiles not implemented") );
 577 }
 578
 579 long wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
 580 {
 581     if ( m_windowStyle & wxTE_MULTILINE )
 582     {
 583         wxString text = GetValue();
 584
 585         // cast to prevent warning. But pos really should've been unsigned.
 586         if( (unsigned long)pos > text.Len()  )
 587             return FALSE;
 588
 589         *x=0;   // First Col
 590         *y=0;   // First Line
 591
 592         const wxChar* stop = text.c_str() + pos;
 593         for ( const wxChar *p = text.c_str(); p < stop; p++ )
 594         {
 595             if (*p == _T('\n'))
 596             {
 597                 (*y)++;
 598                 *x=0;
 599             }
 600             else
 601                 (*x)++;
 602         }
 603     }
 604     else // single line control
 605     {
 606         if ( pos <= GTK_ENTRY(m_text)->text_length )
 607         {
 608             *y = 0;
 609             *x = pos;
 610         }
 611         else
 612         {
 613             // index out of bounds
 614             return FALSE;
 615         }
 616     }
 617
 618     return TRUE;
 619 }
 620
 621 long wxTextCtrl::XYToPosition(long x, long y ) const
 622 {
 623     if (!(m_windowStyle & wxTE_MULTILINE)) return 0;
 624
 625     long pos=0;
 626     for( int i=0; i<y; i++ ) pos += GetLineLength(i) + 1; // one for '\n'
 627
 628     pos += x;
 629     return pos;
 630 }
 631
 632 int wxTextCtrl::GetLineLength(long lineNo) const
 633 {
 634     wxString str = GetLineText (lineNo);
 635     return (int) str.Length();
 636 }
 637
 638 int wxTextCtrl::GetNumberOfLines() const
 639 {
 640     if (m_windowStyle & wxTE_MULTILINE)
 641     {
 642         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 643         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 644
 645         if (text)
 646         {
 647             int currentLine = 0;
 648             for (int i = 0; i < len; i++ )
 649             {
 650                 if (text[i] == '\n')
 651                     currentLine++;
 652             }
 653             g_free( text );
 654
 655             // currentLine is 0 based, add 1 to get number of lines
 656             return currentLine + 1;
 657         }
 658         else
 659         {
 660             return 0;
 661         }
 662     }
 663     else
 664     {
 665         return 1;
 666     }
 667 }
 668
 669 void wxTextCtrl::SetInsertionPoint( long pos )
 670 {
 671     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 672
 673     if (m_windowStyle & wxTE_MULTILINE)
 674     {
 675         /* seems to be broken in GTK 1.0.X:
 676            gtk_text_set_point( GTK_TEXT(m_text), (int)pos ); */
 677
 678         gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 679           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 680
 681         /* we fake a set_point by inserting and deleting. as the user
 682            isn't supposed to get to know about thos non-sense, we
 683            disconnect so that no events are sent to the user program. */
 684
 685         gint tmp = (gint)pos;
 686         gtk_editable_insert_text( GTK_EDITABLE(m_text), " ", 1, &tmp );
 687         gtk_editable_delete_text( GTK_EDITABLE(m_text), tmp-1, tmp );
 688
 689         gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 690           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 691
 692         /* bring editable's cursor uptodate. another bug in GTK. */
 693
 694         GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 695     }
 696     else
 697     {
 698         gtk_entry_set_position( GTK_ENTRY(m_text), (int)pos );
 699
 700         /* bring editable's cursor uptodate. bug in GTK. */
 701
 702         GTK_EDITABLE(m_text)->current_pos = pos;
 703     }
 704 }
 705
 706 void wxTextCtrl::SetInsertionPointEnd()
 707 {
 708     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 709
 710     if (m_windowStyle & wxTE_MULTILINE)
 711         SetInsertionPoint(gtk_text_get_length(GTK_TEXT(m_text)));
 712     else
 713         gtk_entry_set_position( GTK_ENTRY(m_text), -1 );
 714 }
 715
 716 void wxTextCtrl::SetEditable( bool editable )
 717 {
 718     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 719
 720     if (m_windowStyle & wxTE_MULTILINE)
 721         gtk_text_set_editable( GTK_TEXT(m_text), editable );
 722     else
 723         gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
 724 }
 725
 726 void wxTextCtrl::SetSelection( long from, long to )
 727 {
 728     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 729
 730     gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 731 }
 732
 733 void wxTextCtrl::ShowPosition( long WXUNUSED(pos) )
 734 {
 735 //    SetInsertionPoint( pos );
 736 }
 737
 738 long wxTextCtrl::GetInsertionPoint() const
 739 {
 740     wxCHECK_MSG( m_text != NULL, 0, _T("invalid text ctrl") );
 741
 742     return (long) GTK_EDITABLE(m_text)->current_pos;
 743 }
 744
 745 long wxTextCtrl::GetLastPosition() const
 746 {
 747     wxCHECK_MSG( m_text != NULL, 0, _T("invalid text ctrl") );
 748
 749     int pos = 0;
 750     if (m_windowStyle & wxTE_MULTILINE)
 751         pos = gtk_text_get_length( GTK_TEXT(m_text) );
 752     else
 753         pos = GTK_ENTRY(m_text)->text_length;
 754
 755     return (long)pos;
 756 }
 757
 758 void wxTextCtrl::Remove( long from, long to )
 759 {
 760     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 761
 762     gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 763       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 764
 765     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 766
 767     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 768       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 769 }
 770
 771 void wxTextCtrl::Replace( long from, long to, const wxString &value )
 772 {
 773     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 774
 775     gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 776       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 777
 778     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 779
 780     if (!value.IsEmpty())
 781     {
 782         gint pos = (gint)from;
 783 #if wxUSE_UNICODE
 784         wxWX2MBbuf buf = value.mbc_str();
 785         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &pos );
 786 #else
 787         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &pos );
 788 #endif
 789     }
 790
 791     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 792       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 793 }
 794
 795 void wxTextCtrl::Cut()
 796 {
 797     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 798
 799     gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 800       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 801
 802 #if (GTK_MINOR_VERSION > 0)
 803     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text) );
 804 #else
 805     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text), 0 );
 806 #endif
 807
 808     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 809       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 810 }
 811
 812 void wxTextCtrl::Copy()
 813 {
 814     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 815
 816 #if (GTK_MINOR_VERSION > 0)
 817     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text) );
 818 #else
 819     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text), 0 );
 820 #endif
 821 }
 822
 823 void wxTextCtrl::Paste()
 824 {
 825     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 826
 827     gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 828       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 829
 830 #if (GTK_MINOR_VERSION > 0)
 831     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text) );
 832 #else
 833     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text), 0 );
 834 #endif
 835
 836     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 837       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 838 }
 839
 840 bool wxTextCtrl::CanCopy() const
 841 {
 842     // Can copy if there's a selection
 843     long from, to;
 844     GetSelection(& from, & to);
 845     return (from != to) ;
 846 }
 847
 848 bool wxTextCtrl::CanCut() const
 849 {
 850     // Can cut if there's a selection
 851     long from, to;
 852     GetSelection(& from, & to);
 853     return (from != to) ;
 854 }
 855
 856 bool wxTextCtrl::CanPaste() const
 857 {
 858     return IsEditable() ;
 859 }
 860
 861 // Undo/redo
 862 void wxTextCtrl::Undo()
 863 {
 864     // TODO
 865     wxFAIL_MSG( _T("wxTextCtrl::Undo not implemented") );
 866 }
 867
 868 void wxTextCtrl::Redo()
 869 {
 870     // TODO
 871     wxFAIL_MSG( _T("wxTextCtrl::Redo not implemented") );
 872 }
 873
 874 bool wxTextCtrl::CanUndo() const
 875 {
 876     // TODO
 877     wxFAIL_MSG( _T("wxTextCtrl::CanUndo not implemented") );
 878     return FALSE;
 879 }
 880
 881 bool wxTextCtrl::CanRedo() const
 882 {
 883     // TODO
 884     wxFAIL_MSG( _T("wxTextCtrl::CanRedo not implemented") );
 885     return FALSE;
 886 }
 887
 888 // If the return values from and to are the same, there is no
 889 // selection.
 890 void wxTextCtrl::GetSelection(long* from, long* to) const
 891 {
 892     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 893
 894     if (!(GTK_EDITABLE(m_text)->has_selection))
 895     {
 896         if (from) *from = 0;
 897         if (to)   *to = 0;
 898         return;
 899     }
 900
 901     if (from) *from = (long) GTK_EDITABLE(m_text)->selection_start_pos;
 902     if (to)   *to = (long) GTK_EDITABLE(m_text)->selection_end_pos;
 903 }
 904
 905 bool wxTextCtrl::IsEditable() const
 906 {
 907     wxCHECK_MSG( m_text != NULL, FALSE, _T("invalid text ctrl") );
 908
 909     return GTK_EDITABLE(m_text)->editable;
 910 }
 911
 912 void wxTextCtrl::Clear()
 913 {
 914     SetValue( _T("") );
 915 }
 916
 917 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
 918 {
 919     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 920
 921     if ((key_event.KeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
 922     {
 923         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
 924         event.SetEventObject(this);
 925         if (GetEventHandler()->ProcessEvent(event)) return;
 926     }
 927
 928     key_event.Skip();
 929 }
 930
 931 #if wxUSE_STD_IOSTREAM
 932 int wxTextCtrl::overflow( int WXUNUSED(c) )
 933 {
 934     int len = pptr() - pbase();
 935     char *txt = new char[len+1];
 936     strncpy(txt, pbase(), len);
 937     txt[len] = '\0';
 938     (*this) << txt;
 939     setp(pbase(), epptr());
 940     delete[] txt;
 941     return EOF;
 942 }
 943
 944 int wxTextCtrl::sync()
 945 {
 946     int len = pptr() - pbase();
 947     char *txt = new char[len+1];
 948     strncpy(txt, pbase(), len);
 949     txt[len] = '\0';
 950     (*this) << txt;
 951     setp(pbase(), epptr());
 952     delete[] txt;
 953     return 0;
 954 }
 955
 956 int wxTextCtrl::underflow()
 957 {
 958     return EOF;
 959 }
 960 #endif
 961
 962 wxTextCtrl& wxTextCtrl::operator<<(const wxString& s)
 963 {
 964     AppendText(s);
 965     return *this;
 966 }
 967
 968 wxTextCtrl& wxTextCtrl::operator<<(float f)
 969 {
 970     static char buf[100];
 971     sprintf(buf, "%.2f", f);
 972     AppendText(buf);
 973     return *this;
 974 }
 975
 976 wxTextCtrl& wxTextCtrl::operator<<(double d)
 977 {
 978     static char buf[100];
 979     sprintf(buf, "%.2f", d);
 980     AppendText(buf);
 981     return *this;
 982 }
 983
 984 wxTextCtrl& wxTextCtrl::operator<<(int i)
 985 {
 986     static char buf[100];
 987     sprintf(buf, "%i", i);
 988     AppendText(buf);
 989     return *this;
 990 }
 991
 992 wxTextCtrl& wxTextCtrl::operator<<(long i)
 993 {
 994     static char buf[100];
 995     sprintf(buf, "%ld", i);
 996     AppendText(buf);
 997     return *this;
 998 }
 999
1000 wxTextCtrl& wxTextCtrl::operator<<(const char c)
1001 {
1002     char buf[2];
1003
1004     buf[0] = c;
1005     buf[1] = 0;
1006     AppendText(buf);
1007     return *this;
1008 }
1009
1010 GtkWidget* wxTextCtrl::GetConnectWidget()
1011 {
1012     return GTK_WIDGET(m_text);
1013 }
1014
1015 bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
1016 {
1017     if (m_windowStyle & wxTE_MULTILINE)
1018         return (window == GTK_TEXT(m_text)->text_area);
1019     else
1020         return (window == GTK_ENTRY(m_text)->text_area);
1021 }
1022
1023 // the font will change for subsequent text insertiongs
1024 bool wxTextCtrl::SetFont( const wxFont &font )
1025 {
1026     wxCHECK_MSG( m_text != NULL, FALSE, _T("invalid text ctrl") );
1027
1028     if ( !wxWindowBase::SetFont(font) )
1029     {
1030         // font didn't change, nothing to do
1031         return FALSE;
1032     }
1033
1034     if ( m_windowStyle & wxTE_MULTILINE )
1035     {
1036         // for compatibility with other ports: the font is a global controls
1037         // characteristic, so change the font globally
1038         wxString value = GetValue();
1039         if ( !value.IsEmpty() )
1040         {
1041             Clear();
1042
1043             AppendText(value);
1044         }
1045     }
1046
1047     return TRUE;
1048 }
1049
1050 bool wxTextCtrl::SetForegroundColour( const wxColour &WXUNUSED(colour) )
1051 {
1052     wxCHECK_MSG( m_text != NULL, FALSE, _T("invalid text ctrl") );
1053
1054     // doesn't work
1055     return FALSE;
1056 }
1057
1058 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1059 {
1060     wxCHECK_MSG( m_text != NULL, FALSE, _T("invalid text ctrl") );
1061
1062     wxControl::SetBackgroundColour( colour );
1063
1064     if (!m_widget->window)
1065         return FALSE;
1066
1067     wxColour sysbg = wxSystemSettings::GetSystemColour( wxSYS_COLOUR_BTNFACE );
1068     if (sysbg.Red() == colour.Red() &&
1069         sysbg.Green() == colour.Green() &&
1070         sysbg.Blue() == colour.Blue())
1071     {
1072         return FALSE; // FIXME or TRUE?
1073     }
1074
1075     if (!m_backgroundColour.Ok())
1076         return FALSE;
1077
1078     if (m_windowStyle & wxTE_MULTILINE)
1079     {
1080         GdkWindow *window = GTK_TEXT(m_text)->text_area;
1081         if (!window)
1082             return FALSE;
1083         m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
1084         gdk_window_set_background( window, m_backgroundColour.GetColor() );
1085         gdk_window_clear( window );
1086     }
1087
1088     return TRUE;
1089 }
1090
1091 void wxTextCtrl::ApplyWidgetStyle()
1092 {
1093     if (m_windowStyle & wxTE_MULTILINE)
1094     {
1095         // how ?
1096     }
1097     else
1098     {
1099         SetWidgetStyle();
1100         gtk_widget_set_style( m_text, m_widgetStyle );
1101     }
1102 }
1103
1104 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1105 {
1106     Cut();
1107 }
1108
1109 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1110 {
1111     Copy();
1112 }
1113
1114 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1115 {
1116     Paste();
1117 }
1118
1119 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1120 {
1121     Undo();
1122 }
1123
1124 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1125 {
1126     Redo();
1127 }
1128
1129 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1130 {
1131     event.Enable( CanCut() );
1132 }
1133
1134 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1135 {
1136     event.Enable( CanCopy() );
1137 }
1138
1139 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1140 {
1141     event.Enable( CanPaste() );
1142 }
1143
1144 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1145 {
1146     event.Enable( CanUndo() );
1147 }
1148
1149 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1150 {
1151     event.Enable( CanRedo() );
1152 }