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/log.h"
  18 #include "wx/settings.h"
  19 #include "wx/panel.h"
  20 #include "wx/strconv.h"
  21
  22 #include <sys/types.h>
  23 #include <sys/stat.h>
  24 #include <ctype.h>
  25 #include <math.h>               // for fabs
  26
  27 #include "wx/gtk/private.h"
  28 #include <gdk/gdkkeysyms.h>
  29
  30 //-----------------------------------------------------------------------------
  31 // idle system
  32 //-----------------------------------------------------------------------------
  33
  34 extern void wxapp_install_idle_handler();
  35 extern bool g_isIdle;
  36
  37 //-----------------------------------------------------------------------------
  38 // data
  39 //-----------------------------------------------------------------------------
  40
  41 extern bool       g_blockEventsOnDrag;
  42 extern wxCursor   g_globalCursor;
  43 extern wxWindowGTK *g_delayedFocus;
  44
  45 // ----------------------------------------------------------------------------
  46 // helpers
  47 // ----------------------------------------------------------------------------
  48
  49 #ifndef __WXGTK20__
  50 static void wxGtkTextInsert(GtkWidget *text,
  51                             const wxTextAttr& attr,
  52                             const char *txt,
  53                             size_t len)
  54 {
  55     GdkFont *font = attr.HasFont() ? attr.GetFont().GetInternalFont()
  56                                    : NULL;
  57
  58     GdkColor *colFg = attr.HasTextColour() ? attr.GetTextColour().GetColor()
  59                                            : NULL;
  60
  61     GdkColor *colBg = attr.HasBackgroundColour()
  62                         ? attr.GetBackgroundColour().GetColor()
  63                         : NULL;
  64
  65     gtk_text_insert( GTK_TEXT(text), font, colFg, colBg, txt, len );
  66 }
  67 #endif // GTK 1.x
  68
  69 // ----------------------------------------------------------------------------
  70 // "insert_text" for GtkEntry
  71 // ----------------------------------------------------------------------------
  72
  73 static void
  74 gtk_insert_text_callback(GtkEditable *editable,
  75                          const gchar *new_text,
  76                          gint new_text_length,
  77                          gint *position,
  78                          wxTextCtrl *win)
  79 {
  80     if (g_isIdle)
  81         wxapp_install_idle_handler();
  82
  83     // we should only be called if we have a max len limit at all
  84     GtkEntry *entry = GTK_ENTRY (editable);
  85
  86     wxCHECK_RET( entry->text_max_length, _T("shouldn't be called") );
  87
  88     // check that we don't overflow the max length limit
  89     //
  90     // FIXME: this doesn't work when we paste a string which is going to be
  91     //        truncated
  92     if ( entry->text_length == entry->text_max_length )
  93     {
  94         // we don't need to run the base class version at all
  95         gtk_signal_emit_stop_by_name(GTK_OBJECT(editable), "insert_text");
  96
  97         // remember that the next changed signal is to be ignored to avoid
  98         // generating a dummy wxEVT_COMMAND_TEXT_UPDATED event
  99         win->IgnoreNextTextUpdate();
 100
 101         // and generate the correct one ourselves
 102         wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, win->GetId());
 103         event.SetEventObject(win);
 104         event.SetString(win->GetValue());
 105         win->GetEventHandler()->ProcessEvent( event );
 106     }
 107 }
 108
 109 //-----------------------------------------------------------------------------
 110 //  "changed"
 111 //-----------------------------------------------------------------------------
 112
 113 static void
 114 gtk_text_changed_callback( GtkWidget *widget, wxTextCtrl *win )
 115 {
 116     if ( win->IgnoreTextUpdate() )
 117         return;
 118
 119     if (!win->m_hasVMT) return;
 120
 121     if (g_isIdle)
 122         wxapp_install_idle_handler();
 123
 124     win->SetModified();
 125     win->UpdateFontIfNeeded();
 126
 127     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->GetId() );
 128     event.SetEventObject( win );
 129     event.SetString( win->GetValue() );
 130     win->GetEventHandler()->ProcessEvent( event );
 131 }
 132
 133 //-----------------------------------------------------------------------------
 134 // "changed" from vertical scrollbar
 135 //-----------------------------------------------------------------------------
 136
 137 #ifndef __WXGTK20__
 138 static void
 139 gtk_scrollbar_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
 140 {
 141     if (!win->m_hasVMT) return;
 142
 143     if (g_isIdle)
 144         wxapp_install_idle_handler();
 145
 146     win->CalculateScrollbar();
 147 }
 148 #endif
 149
 150 // ----------------------------------------------------------------------------
 151 // redraw callback for multiline text
 152 // ----------------------------------------------------------------------------
 153
 154 #ifndef __WXGTK20__
 155
 156 // redrawing a GtkText from inside a wxYield() call results in crashes (the
 157 // text sample shows it in its "Add lines" command which shows wxProgressDialog
 158 // which implicitly calls wxYield()) so we override GtkText::draw() and simply
 159 // don't do anything if we're inside wxYield()
 160
 161 extern bool wxIsInsideYield;
 162
 163 extern "C" {
 164     typedef void (*GtkDrawCallback)(GtkWidget *widget, GdkRectangle *rect);
 165 }
 166
 167 static GtkDrawCallback gs_gtk_text_draw = NULL;
 168
 169 extern "C"
 170 void wxgtk_text_draw( GtkWidget *widget, GdkRectangle *rect)
 171 {
 172     if ( !wxIsInsideYield )
 173     {
 174         wxCHECK_RET( gs_gtk_text_draw != wxgtk_text_draw,
 175                      _T("infinite recursion in wxgtk_text_draw aborted") );
 176
 177         gs_gtk_text_draw(widget, rect);
 178     }
 179 }
 180
 181 #endif // __WXGTK20__
 182
 183 //-----------------------------------------------------------------------------
 184 //  wxTextCtrl
 185 //-----------------------------------------------------------------------------
 186
 187 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl,wxControl)
 188
 189 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
 190     EVT_CHAR(wxTextCtrl::OnChar)
 191
 192     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 193     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 194     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 195     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 196     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 197
 198     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 199     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 200     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 201     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 202     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 203 END_EVENT_TABLE()
 204
 205 void wxTextCtrl::Init()
 206 {
 207     m_ignoreNextUpdate =
 208     m_modified = FALSE;
 209     m_updateFont = FALSE;
 210     m_text =
 211     m_vScrollbar = (GtkWidget *)NULL;
 212 }
 213
 214 wxTextCtrl::wxTextCtrl( wxWindow *parent,
 215                         wxWindowID id,
 216                         const wxString &value,
 217                         const wxPoint &pos,
 218                         const wxSize &size,
 219                         long style,
 220                         const wxValidator& validator,
 221                         const wxString &name )
 222 {
 223     Init();
 224
 225     Create( parent, id, value, pos, size, style, validator, name );
 226 }
 227
 228 bool wxTextCtrl::Create( wxWindow *parent,
 229                          wxWindowID id,
 230                          const wxString &value,
 231                          const wxPoint &pos,
 232                          const wxSize &size,
 233                          long style,
 234                          const wxValidator& validator,
 235                          const wxString &name )
 236 {
 237     m_needParent = TRUE;
 238     m_acceptsFocus = TRUE;
 239
 240     if (!PreCreation( parent, pos, size ) ||
 241         !CreateBase( parent, id, pos, size, style, validator, name ))
 242     {
 243         wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
 244         return FALSE;
 245     }
 246
 247
 248     m_vScrollbarVisible = FALSE;
 249
 250     bool multi_line = (style & wxTE_MULTILINE) != 0;
 251
 252 #ifdef __WXGTK20__
 253     GtkTextBuffer *buffer = NULL;
 254 #endif
 255
 256     if (multi_line)
 257     {
 258 #ifdef __WXGTK20__
 259         // Create view
 260         m_text = gtk_text_view_new();
 261
 262         buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 263
 264         // create scrolled window
 265         m_widget = gtk_scrolled_window_new( NULL, NULL );
 266         gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW( m_widget ),
 267                                         GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC );
 268
 269         // Insert view into scrolled window
 270         gtk_container_add( GTK_CONTAINER(m_widget), m_text );
 271
 272         // Global settings which can be overridden by tags, I guess.
 273         if (HasFlag( wxHSCROLL ))
 274             gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), GTK_WRAP_NONE );
 275         else
 276             gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), GTK_WRAP_WORD );
 277
 278         if (!HasFlag(wxNO_BORDER))
 279             gtk_scrolled_window_set_shadow_type( GTK_SCROLLED_WINDOW(m_widget), GTK_SHADOW_IN );
 280 #else
 281         // create our control ...
 282         m_text = gtk_text_new( (GtkAdjustment *) NULL, (GtkAdjustment *) NULL );
 283
 284         // ... and put into the upper left hand corner of the table
 285         bool bHasHScrollbar = FALSE;
 286         m_widget = gtk_table_new(bHasHScrollbar ? 2 : 1, 2, FALSE);
 287         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 288         gtk_table_attach( GTK_TABLE(m_widget), m_text, 0, 1, 0, 1,
 289                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 290                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 291                        0, 0);
 292
 293         // always wrap words
 294         gtk_text_set_word_wrap( GTK_TEXT(m_text), TRUE );
 295
 296         // finally, put the vertical scrollbar in the upper right corner
 297         m_vScrollbar = gtk_vscrollbar_new( GTK_TEXT(m_text)->vadj );
 298         GTK_WIDGET_UNSET_FLAGS( m_vScrollbar, GTK_CAN_FOCUS );
 299         gtk_table_attach(GTK_TABLE(m_widget), m_vScrollbar, 1, 2, 0, 1,
 300                      GTK_FILL,
 301                      (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
 302                      0, 0);
 303 #endif
 304     }
 305     else
 306     {
 307         // a single-line text control: no need for scrollbars
 308         m_widget =
 309         m_text = gtk_entry_new();
 310     }
 311
 312     m_parent->DoAddChild( this );
 313
 314     m_focusWidget = m_text;
 315
 316     PostCreation();
 317
 318     SetFont( parent->GetFont() );
 319
 320     wxSize size_best( DoGetBestSize() );
 321     wxSize new_size( size );
 322     if (new_size.x == -1)
 323         new_size.x = size_best.x;
 324     if (new_size.y == -1)
 325         new_size.y = size_best.y;
 326     if ((new_size.x != size.x) || (new_size.y != size.y))
 327         SetSize( new_size.x, new_size.y );
 328
 329     if (multi_line)
 330         gtk_widget_show(m_text);
 331
 332 #ifndef __WXGTK20__
 333     if (multi_line)
 334     {
 335         gtk_signal_connect(GTK_OBJECT(GTK_TEXT(m_text)->vadj), "changed",
 336           (GtkSignalFunc) gtk_scrollbar_changed_callback, (gpointer) this );
 337
 338         // only initialize gs_gtk_text_draw once, starting from the next the
 339         // klass::draw will already be wxgtk_text_draw
 340         if ( !gs_gtk_text_draw )
 341         {
 342             GtkDrawCallback&
 343                 draw = GTK_WIDGET_CLASS(GTK_OBJECT(m_text)->klass)->draw;
 344
 345             gs_gtk_text_draw = draw;
 346
 347             draw = wxgtk_text_draw;
 348         }
 349     }
 350 #endif // GTK+ 1.x
 351
 352     if (!value.IsEmpty())
 353     {
 354 #ifdef __WXGTK20__
 355         SetValue( value );
 356 #else
 357
 358 #if !GTK_CHECK_VERSION(1, 2, 0)
 359         // if we don't realize it, GTK 1.0.6 dies with a SIGSEGV in
 360         // gtk_editable_insert_text()
 361         gtk_widget_realize(m_text);
 362 #endif // GTK 1.0
 363
 364         gint tmp = 0;
 365 #if wxUSE_UNICODE
 366         wxWX2MBbuf val = value.mbc_str();
 367         gtk_editable_insert_text( GTK_EDITABLE(m_text), val, strlen(val), &tmp );
 368 #else
 369         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &tmp );
 370 #endif
 371
 372         if (multi_line)
 373         {
 374             // Bring editable's cursor uptodate. Bug in GTK.
 375             SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
 376         }
 377
 378 #endif
 379     }
 380
 381     if (style & wxTE_PASSWORD)
 382     {
 383         if (!multi_line)
 384             gtk_entry_set_visibility( GTK_ENTRY(m_text), FALSE );
 385     }
 386
 387     if (style & wxTE_READONLY)
 388     {
 389         if (!multi_line)
 390             gtk_entry_set_editable( GTK_ENTRY(m_text), FALSE );
 391 #ifdef __WXGTK20__
 392         else
 393             gtk_text_view_set_editable( GTK_TEXT_VIEW( m_text), FALSE);
 394     }
 395 #else
 396     }
 397     else
 398     {
 399         if (multi_line)
 400             gtk_text_set_editable( GTK_TEXT(m_text), 1 );
 401     }
 402 #endif
 403
 404     // We want to be notified about text changes.
 405 #ifdef __WXGTK20__
 406     if (multi_line)
 407     {
 408         g_signal_connect( G_OBJECT(buffer), "changed",
 409             GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 410     }
 411     else
 412 #endif
 413     {
 414     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 415        GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 416     }
 417
 418     // we don't set a valid background colour, because the window
 419     // manager should use a default one
 420     m_backgroundColour = wxColour();
 421
 422     wxColour colFg = parent->GetForegroundColour();
 423     SetForegroundColour( colFg );
 424
 425     m_cursor = wxCursor( wxCURSOR_IBEAM );
 426
 427 #ifndef __WXGTK20__
 428     wxTextAttr attrDef( colFg, m_backgroundColour, parent->GetFont() );
 429     SetDefaultStyle( attrDef );
 430 #endif
 431
 432     Show( TRUE );
 433
 434     return TRUE;
 435 }
 436
 437 void wxTextCtrl::CalculateScrollbar()
 438 {
 439 #ifndef __WXGTK20__
 440     if ((m_windowStyle & wxTE_MULTILINE) == 0) return;
 441
 442     GtkAdjustment *adj = GTK_TEXT(m_text)->vadj;
 443
 444     if (adj->upper - adj->page_size < 0.8)
 445     {
 446         if (m_vScrollbarVisible)
 447         {
 448             gtk_widget_hide( m_vScrollbar );
 449             m_vScrollbarVisible = FALSE;
 450         }
 451     }
 452     else
 453     {
 454         if (!m_vScrollbarVisible)
 455         {
 456             gtk_widget_show( m_vScrollbar );
 457             m_vScrollbarVisible = TRUE;
 458         }
 459     }
 460 #endif
 461 }
 462
 463 wxString wxTextCtrl::GetValue() const
 464 {
 465     wxCHECK_MSG( m_text != NULL, wxT(""), wxT("invalid text ctrl") );
 466
 467     wxString tmp;
 468     if (m_windowStyle & wxTE_MULTILINE)
 469     {
 470 #ifdef __WXGTK20__
 471         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 472
 473         GtkTextIter start;
 474         gtk_text_buffer_get_start_iter( text_buffer, &start );
 475         GtkTextIter end;
 476         gtk_text_buffer_get_end_iter( text_buffer, &end );
 477         gchar *text = gtk_text_buffer_get_text( text_buffer, &start, &end, TRUE );
 478
 479 #if wxUSE_UNICODE
 480         wxWCharBuffer buffer( wxConvUTF8.cMB2WX( text ) );
 481 #else
 482         wxCharBuffer buffer( wxConvLocal.cWC2WX( wxConvUTF8.cMB2WC( text ) ) );
 483 #endif
 484         tmp = buffer;
 485
 486         g_free( text );
 487 #else
 488         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 489         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 490         tmp = text;
 491         g_free( text );
 492 #endif
 493     }
 494     else
 495     {
 496         tmp = wxGTK_CONV_BACK( gtk_entry_get_text( GTK_ENTRY(m_text) ) );
 497     }
 498
 499     return tmp;
 500 }
 501
 502 void wxTextCtrl::SetValue( const wxString &value )
 503 {
 504     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 505
 506     if (m_windowStyle & wxTE_MULTILINE)
 507     {
 508 #ifdef __WXGTK20__
 509
 510 #if wxUSE_UNICODE
 511         wxCharBuffer buffer( wxConvUTF8.cWX2MB( value) );
 512 #else
 513         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( value ) ) );
 514 #endif
 515         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 516         gtk_text_buffer_set_text( text_buffer, buffer, strlen(buffer) );
 517
 518 #else
 519         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 520         gtk_editable_delete_text( GTK_EDITABLE(m_text), 0, len );
 521         len = 0;
 522         gtk_editable_insert_text( GTK_EDITABLE(m_text), value.mbc_str(), value.Length(), &len );
 523 #endif
 524     }
 525     else
 526     {
 527         gtk_entry_set_text( GTK_ENTRY(m_text), wxGTK_CONV( value ) );
 528     }
 529
 530     // GRG, Jun/2000: Changed this after a lot of discussion in
 531     //   the lists. wxWindows 2.2 will have a set of flags to
 532     //   customize this behaviour.
 533     SetInsertionPoint(0);
 534
 535     m_modified = FALSE;
 536 }
 537
 538 void wxTextCtrl::WriteText( const wxString &text )
 539 {
 540     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 541
 542     if ( text.empty() )
 543         return;
 544
 545     if ( m_windowStyle & wxTE_MULTILINE )
 546     {
 547 #ifdef __WXGTK20__
 548
 549 #if wxUSE_UNICODE
 550         wxCharBuffer buffer( wxConvUTF8.cWX2MB( text ) );
 551 #else
 552         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( text ) ) );
 553 #endif
 554         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 555         gtk_text_buffer_insert_at_cursor( text_buffer, buffer, strlen(buffer) );
 556
 557 #else // GTK 1.x
 558         // After cursor movements, gtk_text_get_point() is wrong by one.
 559         gtk_text_set_point( GTK_TEXT(m_text), GET_EDITABLE_POS(m_text) );
 560
 561         // always use m_defaultStyle, even if it is empty as otherwise
 562         // resetting the style and appending some more text wouldn't work: if
 563         // we don't specify the style explicitly, the old style would be used
 564         wxGtkTextInsert(m_text, m_defaultStyle, text.c_str(), text.Len());
 565
 566         // Bring editable's cursor back uptodate.
 567         SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
 568 #endif // GTK 1.x/2.0
 569     }
 570     else // single line
 571     {
 572         // This moves the cursor pos to behind the inserted text.
 573         gint len = GET_EDITABLE_POS(m_text);
 574
 575 #ifdef __WXGTK20__
 576
 577 #if wxUSE_UNICODE
 578         wxCharBuffer buffer( wxConvUTF8.cWX2MB( text ) );
 579 #else
 580         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( text ) ) );
 581 #endif
 582         gtk_editable_insert_text( GTK_EDITABLE(m_text), buffer, strlen(buffer), &len );
 583
 584 #else
 585         gtk_editable_insert_text( GTK_EDITABLE(m_text), text.c_str(), text.Len(), &len );
 586 #endif
 587
 588         // Bring editable's cursor uptodate.
 589         len += text.Len();
 590
 591         // Bring entry's cursor uptodate.
 592         gtk_entry_set_position( GTK_ENTRY(m_text), len );
 593     }
 594
 595     m_modified = TRUE;
 596 }
 597
 598 void wxTextCtrl::AppendText( const wxString &text )
 599 {
 600     SetInsertionPointEnd();
 601     WriteText( text );
 602 }
 603
 604 wxString wxTextCtrl::GetLineText( long lineNo ) const
 605 {
 606     if (m_windowStyle & wxTE_MULTILINE)
 607     {
 608 #ifndef __WXGTK20__
 609         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 610         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 611
 612         if (text)
 613         {
 614             wxString buf(wxT(""));
 615             long i;
 616             int currentLine = 0;
 617             for (i = 0; currentLine != lineNo && text[i]; i++ )
 618                 if (text[i] == '\n')
 619             currentLine++;
 620             // Now get the text
 621             int j;
 622             for (j = 0; text[i] && text[i] != '\n'; i++, j++ )
 623                 buf += text[i];
 624
 625             g_free( text );
 626             return buf;
 627         }
 628         else
 629 #endif
 630         {
 631             return wxEmptyString;
 632         }
 633     }
 634     else
 635     {
 636         if (lineNo == 0) return GetValue();
 637         return wxEmptyString;
 638     }
 639 }
 640
 641 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 642 {
 643   /* If you implement this, don't forget to update the documentation!
 644    * (file docs/latex/wx/text.tex) */
 645     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
 646 }
 647
 648 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
 649 {
 650     if ( m_windowStyle & wxTE_MULTILINE )
 651     {
 652         wxString text = GetValue();
 653
 654         // cast to prevent warning. But pos really should've been unsigned.
 655         if( (unsigned long)pos > text.Len()  )
 656             return FALSE;
 657
 658         *x=0;   // First Col
 659         *y=0;   // First Line
 660
 661         const wxChar* stop = text.c_str() + pos;
 662         for ( const wxChar *p = text.c_str(); p < stop; p++ )
 663         {
 664             if (*p == wxT('\n'))
 665             {
 666                 (*y)++;
 667                 *x=0;
 668             }
 669             else
 670                 (*x)++;
 671         }
 672     }
 673     else // single line control
 674     {
 675         if ( pos <= GTK_ENTRY(m_text)->text_length )
 676         {
 677             *y = 0;
 678             *x = pos;
 679         }
 680         else
 681         {
 682             // index out of bounds
 683             return FALSE;
 684         }
 685     }
 686
 687     return TRUE;
 688 }
 689
 690 long wxTextCtrl::XYToPosition(long x, long y ) const
 691 {
 692     if (!(m_windowStyle & wxTE_MULTILINE)) return 0;
 693
 694     long pos=0;
 695     for( int i=0; i<y; i++ ) pos += GetLineLength(i) + 1; // one for '\n'
 696
 697     pos += x;
 698     return pos;
 699 }
 700
 701 int wxTextCtrl::GetLineLength(long lineNo) const
 702 {
 703     wxString str = GetLineText (lineNo);
 704     return (int) str.Length();
 705 }
 706
 707 int wxTextCtrl::GetNumberOfLines() const
 708 {
 709     if (m_windowStyle & wxTE_MULTILINE)
 710     {
 711 #ifdef __WXGTK20__
 712         GtkTextBuffer *buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 713
 714         return gtk_text_buffer_get_line_count( buffer );
 715 #else
 716         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 717         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 718
 719         if (text)
 720         {
 721             int currentLine = 0;
 722             for (int i = 0; i < len; i++ )
 723             {
 724                 if (text[i] == '\n')
 725                     currentLine++;
 726             }
 727             g_free( text );
 728
 729             // currentLine is 0 based, add 1 to get number of lines
 730             return currentLine + 1;
 731         }
 732         else
 733         {
 734             return 0;
 735         }
 736 #endif
 737     }
 738     else
 739     {
 740         return 1;
 741     }
 742 }
 743
 744 void wxTextCtrl::SetInsertionPoint( long pos )
 745 {
 746     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 747
 748     if (m_windowStyle & wxTE_MULTILINE)
 749     {
 750 #ifdef __WXGTK20__
 751         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 752         GtkTextIter iter;
 753         gtk_text_buffer_get_iter_at_offset( text_buffer, &iter, pos );
 754         gtk_text_buffer_place_cursor( text_buffer, &iter );
 755 #else
 756         gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 757           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 758
 759         /* we fake a set_point by inserting and deleting. as the user
 760            isn't supposed to get to know about this non-sense, we
 761            disconnect so that no events are sent to the user program. */
 762
 763         gint tmp = (gint)pos;
 764         gtk_editable_insert_text( GTK_EDITABLE(m_text), " ", 1, &tmp );
 765         gtk_editable_delete_text( GTK_EDITABLE(m_text), tmp-1, tmp );
 766
 767         gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 768           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 769
 770         // bring editable's cursor uptodate. Bug in GTK.
 771         SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
 772 #endif
 773     }
 774     else
 775     {
 776         gtk_entry_set_position( GTK_ENTRY(m_text), (int)pos );
 777
 778         // Bring editable's cursor uptodate. Bug in GTK.
 779         SET_EDITABLE_POS(m_text, (guint32)pos);
 780     }
 781 }
 782
 783 void wxTextCtrl::SetInsertionPointEnd()
 784 {
 785     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 786
 787     if (m_windowStyle & wxTE_MULTILINE)
 788     {
 789 #ifdef __WXGTK20__
 790         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 791         GtkTextIter end;
 792         gtk_text_buffer_get_end_iter( text_buffer, &end );
 793         gtk_text_buffer_place_cursor( text_buffer, &end );
 794 #else
 795         SetInsertionPoint(gtk_text_get_length(GTK_TEXT(m_text)));
 796 #endif
 797     }
 798     else
 799     {
 800         gtk_entry_set_position( GTK_ENTRY(m_text), -1 );
 801     }
 802 }
 803
 804 void wxTextCtrl::SetEditable( bool editable )
 805 {
 806     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 807
 808     if (m_windowStyle & wxTE_MULTILINE)
 809     {
 810 #ifdef __WXGTK20__
 811         gtk_text_view_set_editable( GTK_TEXT_VIEW(m_text), editable );
 812 #else
 813         gtk_text_set_editable( GTK_TEXT(m_text), editable );
 814 #endif
 815     }
 816     else
 817     {
 818         gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
 819     }
 820 }
 821
 822 bool wxTextCtrl::Enable( bool enable )
 823 {
 824     if (!wxWindowBase::Enable(enable))
 825     {
 826         // nothing to do
 827         return FALSE;
 828     }
 829
 830     if (m_windowStyle & wxTE_MULTILINE)
 831     {
 832 #ifdef __WXGTK20__
 833         SetEditable( enable );
 834 #else
 835         gtk_text_set_editable( GTK_TEXT(m_text), enable );
 836         OnParentEnable(enable);
 837 #endif
 838     }
 839     else
 840     {
 841         gtk_widget_set_sensitive( m_text, enable );
 842     }
 843
 844     return TRUE;
 845 }
 846
 847 // wxGTK-specific: called recursively by Enable,
 848 // to give widgets an oppprtunity to correct their colours after they
 849 // have been changed by Enable
 850 void wxTextCtrl::OnParentEnable( bool enable )
 851 {
 852     // If we have a custom background colour, we use this colour in both
 853     // disabled and enabled mode, or we end up with a different colour under the
 854     // text.
 855     wxColour oldColour = GetBackgroundColour();
 856     if (oldColour.Ok())
 857     {
 858         // Need to set twice or it'll optimize the useful stuff out
 859         if (oldColour == * wxWHITE)
 860             SetBackgroundColour(*wxBLACK);
 861         else
 862             SetBackgroundColour(*wxWHITE);
 863         SetBackgroundColour(oldColour);
 864     }
 865 }
 866
 867 void wxTextCtrl::DiscardEdits()
 868 {
 869     m_modified = FALSE;
 870 }
 871
 872 // ----------------------------------------------------------------------------
 873 // max text length support
 874 // ----------------------------------------------------------------------------
 875
 876 void wxTextCtrl::IgnoreNextTextUpdate()
 877 {
 878     m_ignoreNextUpdate = TRUE;
 879 }
 880
 881 bool wxTextCtrl::IgnoreTextUpdate()
 882 {
 883     if ( m_ignoreNextUpdate )
 884     {
 885         m_ignoreNextUpdate = FALSE;
 886
 887         return TRUE;
 888     }
 889
 890     return FALSE;
 891 }
 892
 893 void wxTextCtrl::SetMaxLength(unsigned long len)
 894 {
 895     if ( !HasFlag(wxTE_MULTILINE) )
 896     {
 897         gtk_entry_set_max_length(GTK_ENTRY(m_text), len);
 898
 899         // there is a bug in GTK+ 1.2.x: "changed" signal is emitted even if
 900         // we had tried to enter more text than allowed by max text length and
 901         // the text wasn't really changed
 902         //
 903         // to detect this and generate TEXT_MAXLEN event instead of
 904         // TEXT_CHANGED one in this case we also catch "insert_text" signal
 905         //
 906         // when max len is set to 0 we disconnect our handler as it means that
 907         // we shouldn't check anything any more
 908         if ( len )
 909         {
 910             gtk_signal_connect( GTK_OBJECT(m_text),
 911                                 "insert_text",
 912                                 GTK_SIGNAL_FUNC(gtk_insert_text_callback),
 913                                 (gpointer)this);
 914         }
 915         else // no checking
 916         {
 917             gtk_signal_disconnect_by_func
 918             (
 919                 GTK_OBJECT(m_text),
 920                 GTK_SIGNAL_FUNC(gtk_insert_text_callback),
 921                 (gpointer)this
 922             );
 923         }
 924     }
 925 }
 926
 927 void wxTextCtrl::SetSelection( long from, long to )
 928 {
 929     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 930
 931 #ifndef __WXGTK20__
 932     if ( (m_windowStyle & wxTE_MULTILINE) &&
 933          !GTK_TEXT(m_text)->line_start_cache )
 934     {
 935         // tell the programmer that it didn't work
 936         wxLogDebug(_T("Can't call SetSelection() before realizing the control"));
 937         return;
 938     }
 939 #endif
 940
 941     if (m_windowStyle & wxTE_MULTILINE)
 942     {
 943 #ifdef __WXGTK20__
 944         // ????
 945 #else
 946         gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 947 #endif
 948     }
 949     else
 950     {
 951         gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 952     }
 953 }
 954
 955 void wxTextCtrl::ShowPosition( long pos )
 956 {
 957 #ifndef __WXGTK20__
 958     if (m_windowStyle & wxTE_MULTILINE)
 959     {
 960         GtkAdjustment *vp = GTK_TEXT(m_text)->vadj;
 961         float totalLines =  (float) GetNumberOfLines();
 962         long posX;
 963         long posY;
 964         PositionToXY(pos, &posX, &posY);
 965         float posLine = (float) posY;
 966         float p = (posLine/totalLines)*(vp->upper - vp->lower) + vp->lower;
 967         gtk_adjustment_set_value(GTK_TEXT(m_text)->vadj, p);
 968     }
 969 #endif
 970 }
 971
 972 long wxTextCtrl::GetInsertionPoint() const
 973 {
 974     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
 975
 976 #ifdef __WXGTK20__
 977     if (m_windowStyle & wxTE_MULTILINE)
 978     {
 979         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 980
 981         // There is no direct accessor for the cursor, but
 982         // internally, the cursor is the "mark" called
 983         // "insert" in the text view's btree structure.
 984
 985         GtkTextMark *mark = gtk_text_buffer_get_insert( text_buffer );
 986         GtkTextIter cursor;
 987         gtk_text_buffer_get_iter_at_mark( text_buffer, &cursor, mark );
 988
 989         return gtk_text_iter_get_offset( &cursor );
 990     }
 991     else
 992 #endif
 993     {
 994     return (long) GET_EDITABLE_POS(m_text);
 995     }
 996 }
 997
 998 long wxTextCtrl::GetLastPosition() const
 999 {
1000     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1001
1002     int pos = 0;
1003
1004     if (m_windowStyle & wxTE_MULTILINE)
1005     {
1006 #ifdef __WXGTK20__
1007         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
1008         GtkTextIter end;
1009         gtk_text_buffer_get_end_iter( text_buffer, &end );
1010
1011         pos = gtk_text_iter_get_offset( &end );
1012 #else
1013         pos = gtk_text_get_length( GTK_TEXT(m_text) );
1014 #endif
1015     }
1016     else
1017     {
1018         pos = GTK_ENTRY(m_text)->text_length;
1019     }
1020
1021     return (long)pos;
1022 }
1023
1024 void wxTextCtrl::Remove( long from, long to )
1025 {
1026     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1027
1028 #ifndef __WXGTK20__
1029     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1030 #endif
1031 }
1032
1033 void wxTextCtrl::Replace( long from, long to, const wxString &value )
1034 {
1035     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1036
1037 #ifndef __WXGTK20__
1038     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1039
1040     if (!value.IsEmpty())
1041     {
1042         gint pos = (gint)from;
1043 #if wxUSE_UNICODE
1044         wxWX2MBbuf buf = value.mbc_str();
1045         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &pos );
1046 #else
1047         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &pos );
1048 #endif
1049     }
1050 #endif
1051 }
1052
1053 void wxTextCtrl::Cut()
1054 {
1055     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1056
1057 #ifndef __WXGTK20__
1058     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG );
1059 #endif
1060 }
1061
1062 void wxTextCtrl::Copy()
1063 {
1064     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1065
1066 #ifndef __WXGTK20__
1067     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG );
1068 #endif
1069 }
1070
1071 void wxTextCtrl::Paste()
1072 {
1073     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1074
1075 #ifndef __WXGTK20__
1076     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG );
1077 #endif
1078 }
1079
1080 // Undo/redo
1081 void wxTextCtrl::Undo()
1082 {
1083     // TODO
1084     wxFAIL_MSG( wxT("wxTextCtrl::Undo not implemented") );
1085 }
1086
1087 void wxTextCtrl::Redo()
1088 {
1089     // TODO
1090     wxFAIL_MSG( wxT("wxTextCtrl::Redo not implemented") );
1091 }
1092
1093 bool wxTextCtrl::CanUndo() const
1094 {
1095     // TODO
1096     //wxFAIL_MSG( wxT("wxTextCtrl::CanUndo not implemented") );
1097     return FALSE;
1098 }
1099
1100 bool wxTextCtrl::CanRedo() const
1101 {
1102     // TODO
1103     //wxFAIL_MSG( wxT("wxTextCtrl::CanRedo not implemented") );
1104     return FALSE;
1105 }
1106
1107 // If the return values from and to are the same, there is no
1108 // selection.
1109 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1110 {
1111     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1112
1113     gint from, to;
1114 #ifdef __WXGTK20__
1115     if ( !gtk_editable_get_selection_bounds(GTK_EDITABLE(m_text), &from, &to) )
1116 #else
1117     if ( !(GTK_EDITABLE(m_text)->has_selection) )
1118 #endif
1119     {
1120         from =
1121         to = GetInsertionPoint();
1122     }
1123     else // got selection
1124     {
1125 #ifndef __WXGTK20__
1126         from = (long) GTK_EDITABLE(m_text)->selection_start_pos;
1127         to = (long) GTK_EDITABLE(m_text)->selection_end_pos;
1128 #endif
1129
1130         if ( from > to )
1131         {
1132             // exchange them to be compatible with wxMSW
1133             gint tmp = from;
1134             from = to;
1135             to = tmp;
1136         }
1137     }
1138
1139     if ( fromOut )
1140         *fromOut = from;
1141     if ( toOut )
1142         *toOut = to;
1143 }
1144
1145 bool wxTextCtrl::IsEditable() const
1146 {
1147     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1148
1149 #ifdef __WXGTK20__
1150     return gtk_editable_get_editable(GTK_EDITABLE(m_text));
1151 #else
1152     return GTK_EDITABLE(m_text)->editable;
1153 #endif
1154 }
1155
1156 bool wxTextCtrl::IsModified() const
1157 {
1158     return m_modified;
1159 }
1160
1161 void wxTextCtrl::Clear()
1162 {
1163     SetValue( wxT("") );
1164 }
1165
1166 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1167 {
1168     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1169
1170     if ((key_event.KeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
1171     {
1172         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1173         event.SetEventObject(this);
1174         event.SetString(GetValue());
1175         if (GetEventHandler()->ProcessEvent(event)) return;
1176     }
1177
1178     if ((key_event.KeyCode() == WXK_RETURN) && !(m_windowStyle & wxTE_MULTILINE))
1179     {
1180         // This will invoke the dialog default action, such
1181         // as the clicking the default button.
1182
1183         wxWindow *top_frame = m_parent;
1184         while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
1185             top_frame = top_frame->GetParent();
1186
1187         if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
1188         {
1189             GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
1190
1191             if (window->default_widget)
1192             {
1193                 gtk_widget_activate (window->default_widget);
1194                 return;
1195             }
1196         }
1197     }
1198
1199     key_event.Skip();
1200 }
1201
1202 GtkWidget* wxTextCtrl::GetConnectWidget()
1203 {
1204     return GTK_WIDGET(m_text);
1205 }
1206
1207 bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
1208 {
1209     if (m_windowStyle & wxTE_MULTILINE)
1210     {
1211 #ifdef __WXGTK20__
1212         return window == gtk_text_view_get_window( GTK_TEXT_VIEW( m_text ), GTK_TEXT_WINDOW_TEXT );  // pure guesswork
1213 #else
1214         return (window == GTK_TEXT(m_text)->text_area);
1215 #endif
1216     }
1217     else
1218     {
1219         return (window == GTK_ENTRY(m_text)->text_area);
1220     }
1221 }
1222
1223 // the font will change for subsequent text insertiongs
1224 bool wxTextCtrl::SetFont( const wxFont &font )
1225 {
1226     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1227
1228     if ( !wxTextCtrlBase::SetFont(font) )
1229     {
1230         // font didn't change, nothing to do
1231         return FALSE;
1232     }
1233
1234     if ( m_windowStyle & wxTE_MULTILINE )
1235     {
1236         m_updateFont = TRUE;
1237
1238         m_defaultStyle.SetFont(font);
1239
1240         ChangeFontGlobally();
1241     }
1242
1243     return TRUE;
1244 }
1245
1246 void wxTextCtrl::ChangeFontGlobally()
1247 {
1248     // this method is very inefficient and hence should be called as rarely as
1249     // possible!
1250     wxASSERT_MSG( (m_windowStyle & wxTE_MULTILINE) && m_updateFont,
1251                   _T("shouldn't be called for single line controls") );
1252
1253     wxString value = GetValue();
1254     if ( !value.IsEmpty() )
1255     {
1256         m_updateFont = FALSE;
1257
1258         Clear();
1259         AppendText(value);
1260     }
1261 }
1262
1263 void wxTextCtrl::UpdateFontIfNeeded()
1264 {
1265     if ( m_updateFont )
1266         ChangeFontGlobally();
1267 }
1268
1269 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1270 {
1271     if ( !wxControl::SetForegroundColour(colour) )
1272         return FALSE;
1273
1274     // update default fg colour too
1275     m_defaultStyle.SetTextColour(colour);
1276
1277     return TRUE;
1278 }
1279
1280 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1281 {
1282     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1283
1284     if ( !wxControl::SetBackgroundColour( colour ) )
1285         return FALSE;
1286
1287     if (!m_widget->window)
1288         return FALSE;
1289
1290     wxColour sysbg = wxSystemSettings::GetColour( wxSYS_COLOUR_BTNFACE );
1291     if (sysbg.Red() == colour.Red() &&
1292         sysbg.Green() == colour.Green() &&
1293         sysbg.Blue() == colour.Blue())
1294     {
1295         return FALSE; // FIXME or TRUE?
1296     }
1297
1298     if (!m_backgroundColour.Ok())
1299         return FALSE;
1300
1301     if (m_windowStyle & wxTE_MULTILINE)
1302     {
1303 #ifndef __WXGTK20__
1304         GdkWindow *window = GTK_TEXT(m_text)->text_area;
1305         if (!window)
1306             return FALSE;
1307         m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
1308         gdk_window_set_background( window, m_backgroundColour.GetColor() );
1309         gdk_window_clear( window );
1310 #endif
1311     }
1312
1313     // change active background color too
1314     m_defaultStyle.SetBackgroundColour( colour );
1315
1316     return TRUE;
1317 }
1318
1319 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
1320 {
1321     /* VERY dirty way to do that - removes the required text and re-adds it
1322        with styling (FIXME) */
1323     if ( m_windowStyle & wxTE_MULTILINE )
1324     {
1325 #ifndef __WXGTK20__
1326         if ( style.IsDefault() )
1327         {
1328             // nothing to do
1329             return TRUE;
1330         }
1331
1332         gint l = gtk_text_get_length( GTK_TEXT(m_text) );
1333
1334         wxCHECK_MSG( start >= 0 && end <= l, FALSE,
1335                      _T("invalid range in wxTextCtrl::SetStyle") );
1336
1337         gint old_pos = gtk_editable_get_position( GTK_EDITABLE(m_text) );
1338         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), start, end );
1339         wxString tmp(text,*wxConvCurrent);
1340         g_free( text );
1341
1342         gtk_editable_delete_text( GTK_EDITABLE(m_text), start, end );
1343         gtk_editable_set_position( GTK_EDITABLE(m_text), start );
1344
1345 #if wxUSE_UNICODE
1346         wxWX2MBbuf buf = tmp.mbc_str();
1347         const char *txt = buf;
1348         size_t txtlen = strlen(buf);
1349 #else
1350         const char *txt = tmp;
1351         size_t txtlen = tmp.length();
1352 #endif
1353
1354         // use the attributes from style which are set in it and fall back
1355         // first to the default style and then to the text control default
1356         // colours for the others
1357         wxGtkTextInsert(m_text,
1358                         wxTextAttr::Combine(style, m_defaultStyle, this),
1359                         txt,
1360                         txtlen);
1361
1362         /* does not seem to help under GTK+ 1.2 !!!
1363         gtk_editable_set_position( GTK_EDITABLE(m_text), old_pos ); */
1364         SetInsertionPoint( old_pos );
1365 #endif
1366         return TRUE;
1367     }
1368     else // singe line
1369     {
1370         // cannot do this for GTK+'s Entry widget
1371         return FALSE;
1372     }
1373 }
1374
1375 void wxTextCtrl::ApplyWidgetStyle()
1376 {
1377     if (m_windowStyle & wxTE_MULTILINE)
1378     {
1379         // how ?
1380     }
1381     else
1382     {
1383         SetWidgetStyle();
1384         gtk_widget_set_style( m_text, m_widgetStyle );
1385     }
1386 }
1387
1388 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1389 {
1390     Cut();
1391 }
1392
1393 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1394 {
1395     Copy();
1396 }
1397
1398 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1399 {
1400     Paste();
1401 }
1402
1403 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1404 {
1405     Undo();
1406 }
1407
1408 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1409 {
1410     Redo();
1411 }
1412
1413 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1414 {
1415     event.Enable( CanCut() );
1416 }
1417
1418 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1419 {
1420     event.Enable( CanCopy() );
1421 }
1422
1423 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1424 {
1425     event.Enable( CanPaste() );
1426 }
1427
1428 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1429 {
1430     event.Enable( CanUndo() );
1431 }
1432
1433 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1434 {
1435     event.Enable( CanRedo() );
1436 }
1437
1438 void wxTextCtrl::OnInternalIdle()
1439 {
1440     wxCursor cursor = m_cursor;
1441     if (g_globalCursor.Ok()) cursor = g_globalCursor;
1442
1443     if (cursor.Ok())
1444     {
1445 #ifndef __WXGTK20__
1446         GdkWindow *window = (GdkWindow*) NULL;
1447         if (HasFlag(wxTE_MULTILINE))
1448             window = GTK_TEXT(m_text)->text_area;
1449         else
1450             window = GTK_ENTRY(m_text)->text_area;
1451
1452         if (window)
1453             gdk_window_set_cursor( window, cursor.GetCursor() );
1454
1455         if (!g_globalCursor.Ok())
1456             cursor = *wxSTANDARD_CURSOR;
1457
1458         window = m_widget->window;
1459         if ((window) && !(GTK_WIDGET_NO_WINDOW(m_widget)))
1460             gdk_window_set_cursor( window, cursor.GetCursor() );
1461 #endif
1462     }
1463
1464     if (g_delayedFocus == this)
1465     {
1466         if (GTK_WIDGET_REALIZED(m_widget))
1467         {
1468             gtk_widget_grab_focus( m_widget );
1469             g_delayedFocus = NULL;
1470         }
1471     }
1472
1473     UpdateWindowUI();
1474 }
1475
1476 wxSize wxTextCtrl::DoGetBestSize() const
1477 {
1478     // FIXME should be different for multi-line controls...
1479     wxSize ret( wxControl::DoGetBestSize() );
1480     return wxSize(80, ret.y);
1481 }
1482
1483 // ----------------------------------------------------------------------------
1484 // freeze/thaw
1485 // ----------------------------------------------------------------------------
1486
1487 void wxTextCtrl::Freeze()
1488 {
1489 #ifndef __WXGTK20__
1490     if ( HasFlag(wxTE_MULTILINE) )
1491     {
1492         gtk_text_freeze(GTK_TEXT(m_text));
1493     }
1494 #endif
1495 }
1496
1497 void wxTextCtrl::Thaw()
1498 {
1499 #ifndef __WXGTK20__
1500     if ( HasFlag(wxTE_MULTILINE) )
1501     {
1502         GTK_TEXT(m_text)->vadj->value = 0.0;
1503
1504         gtk_text_thaw(GTK_TEXT(m_text));
1505     }
1506 #endif
1507 }
1508
1509 // ----------------------------------------------------------------------------
1510 // scrolling
1511 // ----------------------------------------------------------------------------
1512
1513 GtkAdjustment *wxTextCtrl::GetVAdj() const
1514 {
1515 #ifdef __WXGTK20__
1516     return NULL;
1517 #else
1518     return HasFlag(wxTE_MULTILINE) ? GTK_TEXT(m_text)->vadj : NULL;
1519 #endif
1520 }
1521
1522 bool wxTextCtrl::DoScroll(GtkAdjustment *adj, int diff)
1523 {
1524 #ifndef __WXGTK20__
1525     float value = adj->value + diff;
1526
1527     if ( value < 0 )
1528         value = 0;
1529
1530     float upper = adj->upper - adj->page_size;
1531     if ( value > upper )
1532         value = upper;
1533
1534     // did we noticeably change the scroll position?
1535     if ( fabs(adj->value - value) < 0.2 )
1536     {
1537         // well, this is what Robert does in wxScrollBar, so it must be good...
1538         return FALSE;
1539     }
1540
1541     adj->value = value;
1542
1543     gtk_signal_emit_by_name(GTK_OBJECT(adj), "value_changed");
1544
1545 #endif
1546     return TRUE;
1547 }
1548
1549 bool wxTextCtrl::ScrollLines(int lines)
1550 {
1551 #ifdef __WXGTK20__
1552     return FALSE;
1553 #else
1554     GtkAdjustment *adj = GetVAdj();
1555     if ( !adj )
1556         return FALSE;
1557
1558     // this is hardcoded to 10 in GTK+ 1.2 (great idea)
1559     static const int KEY_SCROLL_PIXELS = 10;
1560
1561     return DoScroll(adj, lines*KEY_SCROLL_PIXELS);
1562 #endif
1563 }
1564
1565 bool wxTextCtrl::ScrollPages(int pages)
1566 {
1567 #ifdef __WXGTK20__
1568     return FALSE;
1569 #else
1570     GtkAdjustment *adj = GetVAdj();
1571     if ( !adj )
1572         return FALSE;
1573
1574     return DoScroll(adj, (int)ceil(pages*adj->page_increment));
1575 #endif
1576 }
1577