src/gtk1/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        textctrl.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling, Vadim Zeitlin
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #ifdef __GNUG__
  11 #pragma implementation "textctrl.h"
  12 #endif
  13
  14 #include "wx/textctrl.h"
  15 #include "wx/utils.h"
  16 #include "wx/intl.h"
  17 #include "wx/settings.h"
  18
  19 #include <sys/types.h>
  20 #include <sys/stat.h>
  21 #include <ctype.h>
  22
  23 #include "gdk/gdk.h"
  24 #include "gtk/gtk.h"
  25 #include "gdk/gdkkeysyms.h"
  26
  27 //-----------------------------------------------------------------------------
  28 // idle system
  29 //-----------------------------------------------------------------------------
  30
  31 extern void wxapp_install_idle_handler();
  32 extern bool g_isIdle;
  33
  34 //-----------------------------------------------------------------------------
  35 // data
  36 //-----------------------------------------------------------------------------
  37
  38 extern bool   g_blockEventsOnDrag;
  39
  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 wxTextCtrl::wxTextCtrl()
  98 {
  99     m_modified = FALSE;
 100 }
 101
 102 wxTextCtrl::wxTextCtrl( wxWindow *parent, wxWindowID id, const wxString &value,
 103       const wxPoint &pos, const wxSize &size,
 104       int style, const wxValidator& validator, const wxString &name )
 105 {
 106     m_modified = FALSE;
 107     Create( parent, id, value, pos, size, style, validator, name );
 108 }
 109
 110 bool wxTextCtrl::Create( wxWindow *parent, wxWindowID id, const wxString &value,
 111       const wxPoint &pos, const wxSize &size,
 112       int style, const wxValidator& validator, const wxString &name )
 113 {
 114     m_needParent = TRUE;
 115     m_acceptsFocus = TRUE;
 116
 117     PreCreation( parent, id, pos, size, style, name );
 118
 119 #if wxUSE_VALIDATORS
 120     SetValidator( validator );
 121 #endif // wxUSE_VALIDATORS
 122
 123     m_vScrollbarVisible = FALSE;
 124
 125     bool multi_line = (style & wxTE_MULTILINE) != 0;
 126     if (multi_line)
 127     {
 128 #if (GTK_MINOR_VERSION > 2)
 129         /* a multi-line edit control: create a vertical scrollbar by default and
 130            horizontal if requested */
 131         bool bHasHScrollbar = (style & wxHSCROLL) != 0;
 132 #else
 133         bool bHasHScrollbar = FALSE;
 134 #endif
 135
 136         /* create our control ... */
 137         m_text = gtk_text_new( (GtkAdjustment *) NULL, (GtkAdjustment *) NULL );
 138
 139         /* ... and put into the upper left hand corner of the table */
 140         m_widget = gtk_table_new(bHasHScrollbar ? 2 : 1, 2, FALSE);
 141         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 142         gtk_table_attach( GTK_TABLE(m_widget), m_text, 0, 1, 0, 1,
 143                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 144                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 145                        0, 0);
 146
 147         /* always wrap words */
 148         gtk_text_set_word_wrap( GTK_TEXT(m_text), TRUE );
 149
 150 #if (GTK_MINOR_VERSION > 2)
 151         /* put the horizontal scrollbar in the lower left hand corner */
 152         if (bHasHScrollbar)
 153         {
 154             GtkWidget *hscrollbar = gtk_hscrollbar_new(GTK_TEXT(m_text)->hadj);
 155             GTK_WIDGET_UNSET_FLAGS( hscrollbar, GTK_CAN_FOCUS );
 156             gtk_table_attach(GTK_TABLE(m_widget), hscrollbar, 0, 1, 1, 2,
 157                        (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
 158                        GTK_FILL,
 159                        0, 0);
 160             gtk_widget_show(hscrollbar);
 161
 162             /* don't wrap lines, otherwise we wouldn't need the scrollbar */
 163             gtk_text_set_line_wrap( GTK_TEXT(m_text), FALSE );
 164         }
 165 #endif
 166
 167         /* finally, put the vertical scrollbar in the upper right corner */
 168         m_vScrollbar = gtk_vscrollbar_new( GTK_TEXT(m_text)->vadj );
 169         GTK_WIDGET_UNSET_FLAGS( m_vScrollbar, GTK_CAN_FOCUS );
 170         gtk_table_attach(GTK_TABLE(m_widget), m_vScrollbar, 1, 2, 0, 1,
 171                      GTK_FILL,
 172                      (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
 173                      0, 0);
 174     }
 175     else
 176     {
 177         /* a single-line text control: no need for scrollbars */
 178         m_widget =
 179           m_text = gtk_entry_new();
 180     }
 181
 182     wxSize newSize = size;
 183     if (newSize.x == -1) newSize.x = 80;
 184     if (newSize.y == -1) newSize.y = 26;
 185     SetSize( newSize.x, newSize.y );
 186
 187     m_parent->DoAddChild( this );
 188
 189     PostCreation();
 190
 191     if (multi_line)
 192         gtk_widget_show(m_text);
 193
 194     /* we want to be notified about text changes */
 195     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 196       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 197
 198     if (multi_line)
 199     {
 200         gtk_signal_connect(GTK_OBJECT(GTK_TEXT(m_text)->vadj), "changed",
 201           (GtkSignalFunc) gtk_scrollbar_changed_callback, (gpointer) this );
 202     }
 203
 204     if (!value.IsEmpty())
 205     {
 206         gint tmp = 0;
 207
 208 #if GTK_MINOR_VERSION == 0
 209         // if we don't realize it, GTK 1.0.6 dies with a SIGSEGV in
 210         // gtk_editable_insert_text()
 211         gtk_widget_realize(m_text);
 212 #endif // GTK 1.0
 213
 214 #if wxUSE_UNICODE
 215         wxWX2MBbuf val = value.mbc_str();
 216         gtk_editable_insert_text( GTK_EDITABLE(m_text), val, strlen(val), &tmp );
 217 #else // !Unicode
 218         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &tmp );
 219 #endif // Unicode/!Unicode
 220
 221         if (multi_line)
 222         {
 223             /* bring editable's cursor uptodate. bug in GTK. */
 224
 225             GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 226         }
 227     }
 228
 229     if (style & wxTE_PASSWORD)
 230     {
 231         if (!multi_line)
 232             gtk_entry_set_visibility( GTK_ENTRY(m_text), FALSE );
 233     }
 234
 235     if (style & wxTE_READONLY)
 236     {
 237         if (!multi_line)
 238             gtk_entry_set_editable( GTK_ENTRY(m_text), FALSE );
 239     }
 240     else
 241     {
 242         if (multi_line)
 243             gtk_text_set_editable( GTK_TEXT(m_text), 1 );
 244     }
 245
 246     SetBackgroundColour( wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW) );
 247     SetForegroundColour( parent->GetForegroundColour() );
 248
 249     Show( TRUE );
 250
 251     return TRUE;
 252 }
 253
 254 void wxTextCtrl::CalculateScrollbar()
 255 {
 256     if ((m_windowStyle & wxTE_MULTILINE) == 0) return;
 257
 258     GtkAdjustment *adj = GTK_TEXT(m_text)->vadj;
 259
 260     if (adj->upper - adj->page_size < 0.8)
 261     {
 262         if (m_vScrollbarVisible)
 263         {
 264             gtk_widget_hide( m_vScrollbar );
 265             m_vScrollbarVisible = FALSE;
 266         }
 267     }
 268     else
 269     {
 270         if (!m_vScrollbarVisible)
 271         {
 272             gtk_widget_show( m_vScrollbar );
 273             m_vScrollbarVisible = TRUE;
 274         }
 275     }
 276 }
 277
 278 wxString wxTextCtrl::GetValue() const
 279 {
 280     wxCHECK_MSG( m_text != NULL, _T(""), _T("invalid text ctrl") );
 281
 282     wxString tmp;
 283     if (m_windowStyle & wxTE_MULTILINE)
 284     {
 285         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 286         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 287         tmp = wxString(text,*wxConvCurrent);
 288         g_free( text );
 289     }
 290     else
 291     {
 292         tmp = wxString(gtk_entry_get_text( GTK_ENTRY(m_text) ),*wxConvCurrent);
 293     }
 294     return tmp;
 295 }
 296
 297 void wxTextCtrl::SetValue( const wxString &value )
 298 {
 299     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 300
 301     wxString tmp = _T("");
 302     if (!value.IsNull()) tmp = value;
 303     if (m_windowStyle & wxTE_MULTILINE)
 304     {
 305         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 306         gtk_editable_delete_text( GTK_EDITABLE(m_text), 0, len );
 307         len = 0;
 308 #if wxUSE_UNICODE
 309         wxWX2MBbuf tmpbuf = tmp.mbc_str();
 310         gtk_editable_insert_text( GTK_EDITABLE(m_text), tmpbuf, strlen(tmpbuf), &len );
 311 #else
 312         gtk_editable_insert_text( GTK_EDITABLE(m_text), tmp.mbc_str(), tmp.Length(), &len );
 313 #endif
 314     }
 315     else
 316     {
 317         gtk_entry_set_text( GTK_ENTRY(m_text), tmp.mbc_str() );
 318     }
 319 }
 320
 321 void wxTextCtrl::WriteText( const wxString &text )
 322 {
 323     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 324
 325     if (text.IsEmpty()) return;
 326
 327     if (m_windowStyle & wxTE_MULTILINE)
 328     {
 329         /* this moves the cursor pos to behind the inserted text */
 330         gint len = GTK_EDITABLE(m_text)->current_pos;
 331
 332 #if wxUSE_UNICODE
 333         wxWX2MBbuf buf = text.mbc_str();
 334         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &len );
 335 #else
 336         gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
 337 #endif
 338
 339         /* bring editable's cursor uptodate. bug in GTK. */
 340         GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 341     }
 342     else
 343     {
 344         /* this moves the cursor pos to behind the inserted text */
 345         gint len = GTK_EDITABLE(m_text)->current_pos;
 346 #if wxUSE_UNICODE
 347         wxWX2MBbuf buf = text.mbc_str();
 348         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &len );
 349 #else
 350         gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
 351 #endif
 352
 353         /* bring editable's cursor uptodate. bug in GTK. */
 354         GTK_EDITABLE(m_text)->current_pos += text.Len();
 355
 356         /* bring entry's cursor uptodate. bug in GTK. */
 357         gtk_entry_set_position( GTK_ENTRY(m_text), GTK_EDITABLE(m_text)->current_pos );
 358     }
 359 }
 360
 361 void wxTextCtrl::AppendText( const wxString &text )
 362 {
 363     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 364
 365     if (text.IsEmpty()) return;
 366
 367     if (m_windowStyle & wxTE_MULTILINE)
 368     {
 369         bool hasSpecialAttributes = m_font.Ok() ||
 370                                     m_foregroundColour.Ok() ||
 371                                     m_backgroundColour.Ok();
 372         if ( hasSpecialAttributes )
 373         {
 374              gtk_text_insert( GTK_TEXT(m_text),
 375                               m_font.GetInternalFont(),
 376                               m_foregroundColour.GetColor(),
 377                               m_backgroundColour.GetColor(),
 378                               text.mbc_str(), text.length());
 379
 380         }
 381         else
 382         {
 383             /* we'll insert at the last position */
 384             gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 385 #if wxUSE_UNICODE
 386             wxWX2MBbuf buf = text.mbc_str();
 387             gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &len );
 388 #else
 389             gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
 390 #endif
 391         }
 392
 393         /* bring editable's cursor uptodate. bug in GTK. */
 394         GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 395     }
 396     else
 397     {
 398         gtk_entry_append_text( GTK_ENTRY(m_text), text.mbc_str() );
 399     }
 400 }
 401
 402 wxString wxTextCtrl::GetLineText( long lineNo ) const
 403 {
 404   if (m_windowStyle & wxTE_MULTILINE)
 405   {
 406     gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 407     char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 408
 409     if (text)
 410     {
 411         wxString buf(_T(""));
 412         long i;
 413         int currentLine = 0;
 414         for (i = 0; currentLine != lineNo && text[i]; i++ )
 415           if (text[i] == '\n')
 416             currentLine++;
 417         // Now get the text
 418         int j;
 419         for (j = 0; text[i] && text[i] != '\n'; i++, j++ )
 420             buf += text[i];
 421
 422         g_free( text );
 423         return buf;
 424     }
 425     else
 426       return wxEmptyString;
 427   }
 428   else
 429   {
 430     if (lineNo == 0) return GetValue();
 431     return wxEmptyString;
 432   }
 433 }
 434
 435 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 436 {
 437   /* If you implement this, don't forget to update the documentation!
 438    * (file docs/latex/wx/text.tex) */
 439     wxFAIL_MSG( _T("wxTextCtrl::OnDropFiles not implemented") );
 440 }
 441
 442 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
 443 {
 444     if ( m_windowStyle & wxTE_MULTILINE )
 445     {
 446         wxString text = GetValue();
 447
 448         // cast to prevent warning. But pos really should've been unsigned.
 449         if( (unsigned long)pos > text.Len()  )
 450             return FALSE;
 451
 452         *x=0;   // First Col
 453         *y=0;   // First Line
 454
 455         const wxChar* stop = text.c_str() + pos;
 456         for ( const wxChar *p = text.c_str(); p < stop; p++ )
 457         {
 458             if (*p == _T('\n'))
 459             {
 460                 (*y)++;
 461                 *x=0;
 462             }
 463             else
 464                 (*x)++;
 465         }
 466     }
 467     else // single line control
 468     {
 469         if ( pos <= GTK_ENTRY(m_text)->text_length )
 470         {
 471             *y = 0;
 472             *x = pos;
 473         }
 474         else
 475         {
 476             // index out of bounds
 477             return FALSE;
 478         }
 479     }
 480
 481     return TRUE;
 482 }
 483
 484 long wxTextCtrl::XYToPosition(long x, long y ) const
 485 {
 486     if (!(m_windowStyle & wxTE_MULTILINE)) return 0;
 487
 488     long pos=0;
 489     for( int i=0; i<y; i++ ) pos += GetLineLength(i) + 1; // one for '\n'
 490
 491     pos += x;
 492     return pos;
 493 }
 494
 495 int wxTextCtrl::GetLineLength(long lineNo) const
 496 {
 497     wxString str = GetLineText (lineNo);
 498     return (int) str.Length();
 499 }
 500
 501 int wxTextCtrl::GetNumberOfLines() const
 502 {
 503     if (m_windowStyle & wxTE_MULTILINE)
 504     {
 505         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 506         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 507
 508         if (text)
 509         {
 510             int currentLine = 0;
 511             for (int i = 0; i < len; i++ )
 512             {
 513                 if (text[i] == '\n')
 514                     currentLine++;
 515             }
 516             g_free( text );
 517
 518             // currentLine is 0 based, add 1 to get number of lines
 519             return currentLine + 1;
 520         }
 521         else
 522         {
 523             return 0;
 524         }
 525     }
 526     else
 527     {
 528         return 1;
 529     }
 530 }
 531
 532 void wxTextCtrl::SetInsertionPoint( long pos )
 533 {
 534     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 535
 536     if (m_windowStyle & wxTE_MULTILINE)
 537     {
 538         /* seems to be broken in GTK 1.0.X:
 539            gtk_text_set_point( GTK_TEXT(m_text), (int)pos ); */
 540
 541         gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 542           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 543
 544         /* we fake a set_point by inserting and deleting. as the user
 545            isn't supposed to get to know about thos non-sense, we
 546            disconnect so that no events are sent to the user program. */
 547
 548         gint tmp = (gint)pos;
 549         gtk_editable_insert_text( GTK_EDITABLE(m_text), " ", 1, &tmp );
 550         gtk_editable_delete_text( GTK_EDITABLE(m_text), tmp-1, tmp );
 551
 552         gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 553           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 554
 555         /* bring editable's cursor uptodate. another bug in GTK. */
 556
 557         GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 558     }
 559     else
 560     {
 561         gtk_entry_set_position( GTK_ENTRY(m_text), (int)pos );
 562
 563         /* bring editable's cursor uptodate. bug in GTK. */
 564
 565         GTK_EDITABLE(m_text)->current_pos = pos;
 566     }
 567 }
 568
 569 void wxTextCtrl::SetInsertionPointEnd()
 570 {
 571     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 572
 573     if (m_windowStyle & wxTE_MULTILINE)
 574         SetInsertionPoint(gtk_text_get_length(GTK_TEXT(m_text)));
 575     else
 576         gtk_entry_set_position( GTK_ENTRY(m_text), -1 );
 577 }
 578
 579 void wxTextCtrl::SetEditable( bool editable )
 580 {
 581     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 582
 583     if (m_windowStyle & wxTE_MULTILINE)
 584         gtk_text_set_editable( GTK_TEXT(m_text), editable );
 585     else
 586         gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
 587 }
 588
 589 void wxTextCtrl::DiscardEdits()
 590 {
 591     m_modified = FALSE;
 592 }
 593
 594 void wxTextCtrl::SetSelection( long from, long to )
 595 {
 596     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 597
 598     gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 599 }
 600
 601 void wxTextCtrl::ShowPosition( long WXUNUSED(pos) )
 602 {
 603 //    SetInsertionPoint( pos );
 604 }
 605
 606 long wxTextCtrl::GetInsertionPoint() const
 607 {
 608     wxCHECK_MSG( m_text != NULL, 0, _T("invalid text ctrl") );
 609
 610     return (long) GTK_EDITABLE(m_text)->current_pos;
 611 }
 612
 613 long wxTextCtrl::GetLastPosition() const
 614 {
 615     wxCHECK_MSG( m_text != NULL, 0, _T("invalid text ctrl") );
 616
 617     int pos = 0;
 618     if (m_windowStyle & wxTE_MULTILINE)
 619         pos = gtk_text_get_length( GTK_TEXT(m_text) );
 620     else
 621         pos = GTK_ENTRY(m_text)->text_length;
 622
 623     return (long)pos;
 624 }
 625
 626 void wxTextCtrl::Remove( long from, long to )
 627 {
 628     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 629
 630     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 631 }
 632
 633 void wxTextCtrl::Replace( long from, long to, const wxString &value )
 634 {
 635     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 636
 637     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 638
 639     if (!value.IsEmpty())
 640     {
 641         gint pos = (gint)from;
 642 #if wxUSE_UNICODE
 643         wxWX2MBbuf buf = value.mbc_str();
 644         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &pos );
 645 #else
 646         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &pos );
 647 #endif
 648     }
 649 }
 650
 651 void wxTextCtrl::Cut()
 652 {
 653     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 654
 655 #if (GTK_MINOR_VERSION > 0)
 656     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text) );
 657 #else
 658     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text), 0 );
 659 #endif
 660 }
 661
 662 void wxTextCtrl::Copy()
 663 {
 664     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 665
 666 #if (GTK_MINOR_VERSION > 0)
 667     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text) );
 668 #else
 669     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text), 0 );
 670 #endif
 671 }
 672
 673 void wxTextCtrl::Paste()
 674 {
 675     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 676
 677 #if (GTK_MINOR_VERSION > 0)
 678     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text) );
 679 #else
 680     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text), 0 );
 681 #endif
 682 }
 683
 684 bool wxTextCtrl::CanCopy() const
 685 {
 686     // Can copy if there's a selection
 687     long from, to;
 688     GetSelection(& from, & to);
 689     return (from != to) ;
 690 }
 691
 692 bool wxTextCtrl::CanCut() const
 693 {
 694     // Can cut if there's a selection
 695     long from, to;
 696     GetSelection(& from, & to);
 697     return (from != to) ;
 698 }
 699
 700 bool wxTextCtrl::CanPaste() const
 701 {
 702     return IsEditable() ;
 703 }
 704
 705 // Undo/redo
 706 void wxTextCtrl::Undo()
 707 {
 708     // TODO
 709     wxFAIL_MSG( _T("wxTextCtrl::Undo not implemented") );
 710 }
 711
 712 void wxTextCtrl::Redo()
 713 {
 714     // TODO
 715     wxFAIL_MSG( _T("wxTextCtrl::Redo not implemented") );
 716 }
 717
 718 bool wxTextCtrl::CanUndo() const
 719 {
 720     // TODO
 721     wxFAIL_MSG( _T("wxTextCtrl::CanUndo not implemented") );
 722     return FALSE;
 723 }
 724
 725 bool wxTextCtrl::CanRedo() const
 726 {
 727     // TODO
 728     wxFAIL_MSG( _T("wxTextCtrl::CanRedo not implemented") );
 729     return FALSE;
 730 }
 731
 732 // If the return values from and to are the same, there is no
 733 // selection.
 734 void wxTextCtrl::GetSelection(long* from, long* to) const
 735 {
 736     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 737
 738     if (!(GTK_EDITABLE(m_text)->has_selection))
 739     {
 740         if (from) *from = 0;
 741         if (to)   *to = 0;
 742         return;
 743     }
 744
 745     if (from) *from = (long) GTK_EDITABLE(m_text)->selection_start_pos;
 746     if (to)   *to = (long) GTK_EDITABLE(m_text)->selection_end_pos;
 747 }
 748
 749 bool wxTextCtrl::IsEditable() const
 750 {
 751     wxCHECK_MSG( m_text != NULL, FALSE, _T("invalid text ctrl") );
 752
 753     return GTK_EDITABLE(m_text)->editable;
 754 }
 755
 756 bool wxTextCtrl::IsModified() const
 757 {
 758     return m_modified;
 759 }
 760
 761 void wxTextCtrl::Clear()
 762 {
 763     SetValue( _T("") );
 764 }
 765
 766 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
 767 {
 768     wxCHECK_RET( m_text != NULL, _T("invalid text ctrl") );
 769
 770     if ((key_event.KeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
 771     {
 772         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
 773         event.SetEventObject(this);
 774         if (GetEventHandler()->ProcessEvent(event)) return;
 775     }
 776
 777     key_event.Skip();
 778 }
 779
 780 GtkWidget* wxTextCtrl::GetConnectWidget()
 781 {
 782     return GTK_WIDGET(m_text);
 783 }
 784
 785 bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
 786 {
 787     if (m_windowStyle & wxTE_MULTILINE)
 788         return (window == GTK_TEXT(m_text)->text_area);
 789     else
 790         return (window == GTK_ENTRY(m_text)->text_area);
 791 }
 792
 793 // the font will change for subsequent text insertiongs
 794 bool wxTextCtrl::SetFont( const wxFont &font )
 795 {
 796     wxCHECK_MSG( m_text != NULL, FALSE, _T("invalid text ctrl") );
 797
 798     if ( !wxWindowBase::SetFont(font) )
 799     {
 800         // font didn't change, nothing to do
 801         return FALSE;
 802     }
 803
 804     if ( m_windowStyle & wxTE_MULTILINE )
 805     {
 806         // for compatibility with other ports: the font is a global controls
 807         // characteristic, so change the font globally
 808         wxString value = GetValue();
 809         if ( !value.IsEmpty() )
 810         {
 811             Clear();
 812
 813             AppendText(value);
 814         }
 815     }
 816
 817     return TRUE;
 818 }
 819
 820 bool wxTextCtrl::SetForegroundColour( const wxColour &WXUNUSED(colour) )
 821 {
 822     wxCHECK_MSG( m_text != NULL, FALSE, _T("invalid text ctrl") );
 823
 824     // doesn't work
 825     return FALSE;
 826 }
 827
 828 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
 829 {
 830     wxCHECK_MSG( m_text != NULL, FALSE, _T("invalid text ctrl") );
 831
 832     wxControl::SetBackgroundColour( colour );
 833
 834     if (!m_widget->window)
 835         return FALSE;
 836
 837     wxColour sysbg = wxSystemSettings::GetSystemColour( wxSYS_COLOUR_BTNFACE );
 838     if (sysbg.Red() == colour.Red() &&
 839         sysbg.Green() == colour.Green() &&
 840         sysbg.Blue() == colour.Blue())
 841     {
 842         return FALSE; // FIXME or TRUE?
 843     }
 844
 845     if (!m_backgroundColour.Ok())
 846         return FALSE;
 847
 848     if (m_windowStyle & wxTE_MULTILINE)
 849     {
 850         GdkWindow *window = GTK_TEXT(m_text)->text_area;
 851         if (!window)
 852             return FALSE;
 853         m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
 854         gdk_window_set_background( window, m_backgroundColour.GetColor() );
 855         gdk_window_clear( window );
 856     }
 857
 858     return TRUE;
 859 }
 860
 861 void wxTextCtrl::ApplyWidgetStyle()
 862 {
 863     if (m_windowStyle & wxTE_MULTILINE)
 864     {
 865         // how ?
 866     }
 867     else
 868     {
 869         SetWidgetStyle();
 870         gtk_widget_set_style( m_text, m_widgetStyle );
 871     }
 872 }
 873
 874 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
 875 {
 876     Cut();
 877 }
 878
 879 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
 880 {
 881     Copy();
 882 }
 883
 884 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
 885 {
 886     Paste();
 887 }
 888
 889 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
 890 {
 891     Undo();
 892 }
 893
 894 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
 895 {
 896     Redo();
 897 }
 898
 899 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
 900 {
 901     event.Enable( CanCut() );
 902 }
 903
 904 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
 905 {
 906     event.Enable( CanCopy() );
 907 }
 908
 909 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
 910 {
 911     event.Enable( CanPaste() );
 912 }
 913
 914 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
 915 {
 916     event.Enable( CanUndo() );
 917 }
 918
 919 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
 920 {
 921     event.Enable( CanRedo() );
 922 }