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 #ifndef NO_TEXT_WINDOW_STREAM
  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 #ifndef NO_TEXT_WINDOW_STREAM
 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         /* we'll insert at the last position */
 402         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 403 #if wxUSE_UNICODE
 404         wxWX2MBbuf buf = text.mbc_str();
 405         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &len );
 406 #else
 407         gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
 408 #endif
 409
 410         /* bring editable's cursor uptodate. bug in GTK. */
 411         GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 412     }
 413     else
 414     {
 415         gtk_entry_append_text( GTK_ENTRY(m_text), text.mbc_str() );
 416     }
 417
 418     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 419       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 420 }
 421
 422 bool wxTextCtrl::LoadFile( const wxString &file )
 423 {
 424     wxCHECK_MSG( m_text != NULL, FALSE, _T("invalid text ctrl") );
 425
 426     if (!wxFileExists(file)) return FALSE;
 427
 428     Clear();
 429
 430     FILE *fp = (FILE*) NULL;
 431     struct stat statb;
 432
 433     if ((stat (FNSTRINGCAST file.fn_str(), &statb) == -1) || (statb.st_mode & S_IFMT) != S_IFREG ||
 434         !(fp = fopen (FNSTRINGCAST file.fn_str(), "r")))
 435     {
 436         return FALSE;
 437     }
 438     else
 439     {
 440         gint len = statb.st_size;
 441         char *text;
 442         if (!(text = (char*)malloc ((unsigned) (len + 1))))
 443         {
 444             fclose (fp);
 445             return FALSE;
 446         }
 447         if (fread (text, sizeof (char), len, fp) != (size_t) len)
 448         {
 449         }
 450         fclose (fp);
 451
 452         text[len] = 0;
 453
 454         gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 455           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 456
 457         if (m_windowStyle & wxTE_MULTILINE)
 458         {
 459             gint pos = 0;
 460             gtk_editable_insert_text( GTK_EDITABLE(m_text), text, len, &pos );
 461         }
 462         else
 463         {
 464             gtk_entry_set_text( GTK_ENTRY(m_text), text );
 465         }
 466
 467         gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 468           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 469
 470         free (text);
 471         m_modified = FALSE;
 472         return TRUE;
 473     }
 474     return FALSE;
 475 }
 476
 477 bool wxTextCtrl::SaveFile( const wxString &file )
 478 {
 479     wxCHECK_MSG( m_text != NULL, FALSE, _T("invalid text ctrl") );
 480
 481     if (file == _T("")) return FALSE;
 482
 483     FILE *fp;
 484
 485     if (!(fp = fopen (FNSTRINGCAST file.fn_str(), "w")))
 486     {
 487         return FALSE;
 488     }
 489     else
 490     {
 491       char *text = (char*) NULL;
 492       gint len = 0;
 493
 494       if (m_windowStyle & wxTE_MULTILINE)
 495       {
 496           len = gtk_text_get_length( GTK_TEXT(m_text) );
 497           text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 498       }
 499       else
 500       {
 501           text = gtk_entry_get_text( GTK_ENTRY(m_text) );
 502       }
 503
 504       if (fwrite (text, sizeof (char), len, fp) != (size_t) len)
 505       {
 506           // Did not write whole file
 507       }
 508
 509       // Make sure newline terminates the file
 510       if (text[len - 1] != '\n')
 511           fputc ('\n', fp);
 512
 513       fclose (fp);
 514
 515       if (m_windowStyle & wxTE_MULTILINE) g_free( text );
 516
 517       m_modified = FALSE;
 518       return TRUE;
 519     }
 520
 521     return TRUE;
 522 }
 523
 524 wxString wxTextCtrl::GetLineText( long lineNo ) const
 525 {
 526   if (m_windowStyle & wxTE_MULTILINE)
 527   {
 528     gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 529     char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 530
 531     if (text)
 532     {
 533         wxString buf(_T(""));
 534         long i;
 535         int currentLine = 0;
 536         for (i = 0; currentLine != lineNo && text[i]; i++ )
 537           if (text[i] == '\n')
 538             currentLine++;
 539         // Now get the text
 540         int j;
 541         for (j = 0; text[i] && text[i] != '\n'; i++, j++ )
 542             buf += text[i];
 543
 544         g_free( text );
 545         return buf;
 546     }
 547     else
 548       return wxEmptyString;
 549   }
 550   else
 551   {
 552     if (lineNo == 0) return GetValue();
 553     return wxEmptyString;
 554   }
 555 }
 556
 557 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 558 {
 559   /* If you implement this, don't forget to update the documentation!
 560    * (file docs/latex/wx/text.tex) */
 561     wxFAIL_MSG( _T("wxTextCtrl::OnDropFiles not implemented") );
 562 }
 563
 564 long wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
 565 {
 566     if ( m_windowStyle & wxTE_MULTILINE )
 567     {
 568         wxString text = GetValue();
 569
 570         // cast to prevent warning. But pos really should've been unsigned.
 571         if( (unsigned long)pos > text.Len()  )
 572             return FALSE;
 573
 574         *x=0;   // First Col
 575         *y=0;   // First Line
 576
 577         const wxChar* stop = text.c_str() + pos;
 578         for ( const wxChar *p = text.c_str(); p < stop; p++ )
 579         {
 580             if (*p == _T('\n'))
 581             {
 582                 (*y)++;
 583                 *x=0;
 584             }
 585             else
 586                 (*x)++;
 587         }
 588     }
 589     else // single line control
 590     {
 591         if ( pos <= GTK_ENTRY(m_text)->text_length )
 592         {
 593             *y = 0;
 594             *x = pos;
 595         }
 596         else
 597         {
 598             // index out of bounds
 599             return FALSE;
 600         }
 601     }
 602
 603     return TRUE;
 604 }
 605
 606 long wxTextCtrl::XYToPosition(long x, long y ) const
 607 {
 608     if (!(m_windowStyle & wxTE_MULTILINE)) return 0;
 609
 610     long pos=0;
 611     for( int i=0; i<y; i++ ) pos += GetLineLength(i) + 1; // one for '\n'
 612
 613     pos += x;
 614     return pos;
 615 }
 616
 617 int wxTextCtrl::GetLineLength(long lineNo) const
 618 {
 619     wxString str = GetLineText (lineNo);
 620     return (int) str.Length();
 621 }
 622
 623 int wxTextCtrl::GetNumberOfLines() const
 624 {
 625     if (m_windowStyle & wxTE_MULTILINE)
 626     {
 627         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 628         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 629
 630         if (text)
 631         {
 632             int currentLine = 0;
 633             for (int i = 0; i < len; i++ )
 634             {
 635                 if (text[i] == '\n')
 636                     currentLine++;
 637             }
 638             g_free( text );
 639
 640             // currentLine is 0 based, add 1 to get number of lines
 641             return currentLine + 1;
 642         }
 643         else
 644         {
 645             return 0;
 646         }
 647     }
 648     else
 649     {
 650         return 1;
 651     }
 652 }
 653
 654 void wxTextCtrl::SetInsertionPoint( long pos )
 655 {
 656     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 657
 658     if (m_windowStyle & wxTE_MULTILINE)
 659     {
 660         /* seems to be broken in GTK 1.0.X:
 661            gtk_text_set_point( GTK_TEXT(m_text), (int)pos ); */
 662
 663         gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 664           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 665
 666         /* we fake a set_point by inserting and deleting. as the user
 667            isn't supposed to get to know about thos non-sense, we
 668            disconnect so that no events are sent to the user program. */
 669
 670         gint tmp = (gint)pos;
 671         gtk_editable_insert_text( GTK_EDITABLE(m_text), " ", 1, &tmp );
 672         gtk_editable_delete_text( GTK_EDITABLE(m_text), tmp-1, tmp );
 673
 674         gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 675           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 676
 677         /* bring editable's cursor uptodate. another bug in GTK. */
 678
 679         GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 680     }
 681     else
 682     {
 683         gtk_entry_set_position( GTK_ENTRY(m_text), (int)pos );
 684
 685         /* bring editable's cursor uptodate. bug in GTK. */
 686
 687         GTK_EDITABLE(m_text)->current_pos = pos;
 688     }
 689 }
 690
 691 void wxTextCtrl::SetInsertionPointEnd()
 692 {
 693     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 694
 695     if (m_windowStyle & wxTE_MULTILINE)
 696         SetInsertionPoint(gtk_text_get_length(GTK_TEXT(m_text)));
 697     else
 698         gtk_entry_set_position( GTK_ENTRY(m_text), -1 );
 699 }
 700
 701 void wxTextCtrl::SetEditable( bool editable )
 702 {
 703     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 704
 705     if (m_windowStyle & wxTE_MULTILINE)
 706         gtk_text_set_editable( GTK_TEXT(m_text), editable );
 707     else
 708         gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
 709 }
 710
 711 void wxTextCtrl::SetSelection( long from, long to )
 712 {
 713     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 714
 715     gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 716 }
 717
 718 void wxTextCtrl::ShowPosition( long WXUNUSED(pos) )
 719 {
 720 //    SetInsertionPoint( pos );
 721 }
 722
 723 long wxTextCtrl::GetInsertionPoint() const
 724 {
 725     wxCHECK_MSG( m_text != NULL, 0, _T("invalid text ctrl") );
 726
 727     return (long) GTK_EDITABLE(m_text)->current_pos;
 728 }
 729
 730 long wxTextCtrl::GetLastPosition() const
 731 {
 732     wxCHECK_MSG( m_text != NULL, 0, _T("invalid text ctrl") );
 733
 734     int pos = 0;
 735     if (m_windowStyle & wxTE_MULTILINE)
 736         pos = gtk_text_get_length( GTK_TEXT(m_text) );
 737     else
 738         pos = GTK_ENTRY(m_text)->text_length;
 739
 740     return (long)pos;
 741 }
 742
 743 void wxTextCtrl::Remove( long from, long to )
 744 {
 745     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 746
 747     gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 748       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 749
 750     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 751
 752     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 753       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 754 }
 755
 756 void wxTextCtrl::Replace( long from, long to, const wxString &value )
 757 {
 758     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 759
 760     gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 761       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 762
 763     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 764
 765     if (!value.IsEmpty())
 766     {
 767         gint pos = (gint)from;
 768 #if wxUSE_UNICODE
 769         wxWX2MBbuf buf = value.mbc_str();
 770         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &pos );
 771 #else
 772         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &pos );
 773 #endif
 774     }
 775
 776     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 777       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 778 }
 779
 780 void wxTextCtrl::Cut()
 781 {
 782     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 783
 784     gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 785       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 786
 787 #if (GTK_MINOR_VERSION > 0)
 788     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text) );
 789 #else
 790     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text), 0 );
 791 #endif
 792
 793     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 794       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 795 }
 796
 797 void wxTextCtrl::Copy()
 798 {
 799     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 800
 801 #if (GTK_MINOR_VERSION > 0)
 802     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text) );
 803 #else
 804     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text), 0 );
 805 #endif
 806 }
 807
 808 void wxTextCtrl::Paste()
 809 {
 810     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 811
 812     gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 813       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 814
 815 #if (GTK_MINOR_VERSION > 0)
 816     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text) );
 817 #else
 818     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text), 0 );
 819 #endif
 820
 821     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 822       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 823 }
 824
 825 bool wxTextCtrl::CanCopy() const
 826 {
 827     // Can copy if there's a selection
 828     long from, to;
 829     GetSelection(& from, & to);
 830     return (from != to) ;
 831 }
 832
 833 bool wxTextCtrl::CanCut() const
 834 {
 835     // Can cut if there's a selection
 836     long from, to;
 837     GetSelection(& from, & to);
 838     return (from != to) ;
 839 }
 840
 841 bool wxTextCtrl::CanPaste() const
 842 {
 843     return IsEditable() ;
 844 }
 845
 846 // Undo/redo
 847 void wxTextCtrl::Undo()
 848 {
 849     // TODO
 850     wxFAIL_MSG( _T("wxTextCtrl::Undo not implemented") );
 851 }
 852
 853 void wxTextCtrl::Redo()
 854 {
 855     // TODO
 856     wxFAIL_MSG( _T("wxTextCtrl::Redo not implemented") );
 857 }
 858
 859 bool wxTextCtrl::CanUndo() const
 860 {
 861     // TODO
 862     wxFAIL_MSG( _T("wxTextCtrl::CanUndo not implemented") );
 863     return FALSE;
 864 }
 865
 866 bool wxTextCtrl::CanRedo() const
 867 {
 868     // TODO
 869     wxFAIL_MSG( _T("wxTextCtrl::CanRedo not implemented") );
 870     return FALSE;
 871 }
 872
 873 // If the return values from and to are the same, there is no
 874 // selection.
 875 void wxTextCtrl::GetSelection(long* from, long* to) const
 876 {
 877     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 878
 879     if (!(GTK_EDITABLE(m_text)->has_selection))
 880     {
 881         if (from) *from = 0;
 882         if (to)   *to = 0;
 883         return;
 884     }
 885
 886     if (from) *from = (long) GTK_EDITABLE(m_text)->selection_start_pos;
 887     if (to)   *to = (long) GTK_EDITABLE(m_text)->selection_end_pos;
 888 }
 889
 890 bool wxTextCtrl::IsEditable() const
 891 {
 892     wxCHECK_MSG( m_text != NULL, FALSE, _T("invalid text ctrl") );
 893
 894     return GTK_EDITABLE(m_text)->editable;
 895 }
 896
 897 void wxTextCtrl::Clear()
 898 {
 899     SetValue( _T("") );
 900 }
 901
 902 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
 903 {
 904     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 905
 906     if ((key_event.KeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
 907     {
 908         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
 909         event.SetEventObject(this);
 910         if (GetEventHandler()->ProcessEvent(event)) return;
 911     }
 912
 913     key_event.Skip();
 914 }
 915
 916 #ifndef NO_TEXT_WINDOW_STREAM
 917 int wxTextCtrl::overflow( int WXUNUSED(c) )
 918 {
 919     int len = pptr() - pbase();
 920     char *txt = new char[len+1];
 921     strncpy(txt, pbase(), len);
 922     txt[len] = '\0';
 923     (*this) << txt;
 924     setp(pbase(), epptr());
 925     delete[] txt;
 926     return EOF;
 927 }
 928
 929 int wxTextCtrl::sync()
 930 {
 931     int len = pptr() - pbase();
 932     char *txt = new char[len+1];
 933     strncpy(txt, pbase(), len);
 934     txt[len] = '\0';
 935     (*this) << txt;
 936     setp(pbase(), epptr());
 937     delete[] txt;
 938     return 0;
 939 }
 940
 941 int wxTextCtrl::underflow()
 942 {
 943     return EOF;
 944 }
 945
 946 wxTextCtrl& wxTextCtrl::operator<<(const wxString& s)
 947 {
 948     AppendText(s);
 949     return *this;
 950 }
 951
 952 wxTextCtrl& wxTextCtrl::operator<<(float f)
 953 {
 954     static char buf[100];
 955     sprintf(buf, "%.2f", f);
 956     AppendText(buf);
 957     return *this;
 958 }
 959
 960 wxTextCtrl& wxTextCtrl::operator<<(double d)
 961 {
 962     static char buf[100];
 963     sprintf(buf, "%.2f", d);
 964     AppendText(buf);
 965     return *this;
 966 }
 967
 968 wxTextCtrl& wxTextCtrl::operator<<(int i)
 969 {
 970     static char buf[100];
 971     sprintf(buf, "%i", i);
 972     AppendText(buf);
 973     return *this;
 974 }
 975
 976 wxTextCtrl& wxTextCtrl::operator<<(long i)
 977 {
 978     static char buf[100];
 979     sprintf(buf, "%ld", i);
 980     AppendText(buf);
 981     return *this;
 982 }
 983
 984 wxTextCtrl& wxTextCtrl::operator<<(const char c)
 985 {
 986     char buf[2];
 987
 988     buf[0] = c;
 989     buf[1] = 0;
 990     AppendText(buf);
 991     return *this;
 992 }
 993 #endif
 994
 995 GtkWidget* wxTextCtrl::GetConnectWidget()
 996 {
 997     return GTK_WIDGET(m_text);
 998 }
 999
1000 bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
1001 {
1002     if (m_windowStyle & wxTE_MULTILINE)
1003         return (window == GTK_TEXT(m_text)->text_area);
1004     else
1005         return (window == GTK_ENTRY(m_text)->text_area);
1006 }
1007
1008 bool wxTextCtrl::SetFont( const wxFont &WXUNUSED(font) )
1009 {
1010     wxCHECK_MSG( m_text != NULL, FALSE, _T("invalid text ctrl") );
1011
1012     // doesn't work
1013     return FALSE;
1014 }
1015
1016 bool wxTextCtrl::SetForegroundColour( const wxColour &WXUNUSED(colour) )
1017 {
1018     wxCHECK_MSG( m_text != NULL, FALSE, _T("invalid text ctrl") );
1019
1020     // doesn't work
1021     return FALSE;
1022 }
1023
1024 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1025 {
1026     wxCHECK_MSG( m_text != NULL, FALSE, _T("invalid text ctrl") );
1027
1028     wxControl::SetBackgroundColour( colour );
1029
1030     if (!m_widget->window)
1031         return FALSE;
1032
1033     wxColour sysbg = wxSystemSettings::GetSystemColour( wxSYS_COLOUR_BTNFACE );
1034     if (sysbg.Red() == colour.Red() &&
1035         sysbg.Green() == colour.Green() &&
1036         sysbg.Blue() == colour.Blue())
1037     {
1038         return FALSE; // FIXME or TRUE?
1039     }
1040
1041     if (!m_backgroundColour.Ok())
1042         return FALSE;
1043
1044     if (m_windowStyle & wxTE_MULTILINE)
1045     {
1046         GdkWindow *window = GTK_TEXT(m_text)->text_area;
1047         if (!window)
1048             return FALSE;
1049         m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
1050         gdk_window_set_background( window, m_backgroundColour.GetColor() );
1051         gdk_window_clear( window );
1052     }
1053
1054     return TRUE;
1055 }
1056
1057 void wxTextCtrl::ApplyWidgetStyle()
1058 {
1059     if (m_windowStyle & wxTE_MULTILINE)
1060     {
1061         // how ?
1062     }
1063     else
1064     {
1065         SetWidgetStyle();
1066         gtk_widget_set_style( m_text, m_widgetStyle );
1067     }
1068 }
1069
1070 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1071 {
1072     Cut();
1073 }
1074
1075 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1076 {
1077     Copy();
1078 }
1079
1080 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1081 {
1082     Paste();
1083 }
1084
1085 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1086 {
1087     Undo();
1088 }
1089
1090 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1091 {
1092     Redo();
1093 }
1094
1095 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1096 {
1097     event.Enable( CanCut() );
1098 }
1099
1100 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1101 {
1102     event.Enable( CanCopy() );
1103 }
1104
1105 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1106 {
1107     event.Enable( CanPaste() );
1108 }
1109
1110 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1111 {
1112     event.Enable( CanUndo() );
1113 }
1114
1115 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1116 {
1117     event.Enable( CanRedo() );
1118 }