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         // TODO: call wahtever is needed to delete the selection
 556         gtk_text_buffer_insert_at_cursor( text_buffer, buffer, strlen(buffer) );
 557
 558 #else // GTK 1.x
 559         // After cursor movements, gtk_text_get_point() is wrong by one.
 560         gtk_text_set_point( GTK_TEXT(m_text), GET_EDITABLE_POS(m_text) );
 561
 562         // always use m_defaultStyle, even if it is empty as otherwise
 563         // resetting the style and appending some more text wouldn't work: if
 564         // we don't specify the style explicitly, the old style would be used
 565         gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
 566         wxGtkTextInsert(m_text, m_defaultStyle, text.c_str(), text.Len());
 567
 568         // Bring editable's cursor back uptodate.
 569         SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
 570 #endif // GTK 1.x/2.0
 571     }
 572     else // single line
 573     {
 574         // First remove the selection if there is one
 575         gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
 576
 577         // This moves the cursor pos to behind the inserted text.
 578         gint len = GET_EDITABLE_POS(m_text);
 579
 580 #ifdef __WXGTK20__
 581
 582 #if wxUSE_UNICODE
 583         wxCharBuffer buffer( wxConvUTF8.cWX2MB( text ) );
 584 #else
 585         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( text ) ) );
 586 #endif
 587         gtk_editable_insert_text( GTK_EDITABLE(m_text), buffer, strlen(buffer), &len );
 588
 589 #else
 590         gtk_editable_insert_text( GTK_EDITABLE(m_text), text.c_str(), text.Len(), &len );
 591 #endif
 592
 593         // Bring entry's cursor uptodate.
 594         gtk_entry_set_position( GTK_ENTRY(m_text), len );
 595     }
 596
 597     m_modified = TRUE;
 598 }
 599
 600 void wxTextCtrl::AppendText( const wxString &text )
 601 {
 602     SetInsertionPointEnd();
 603     WriteText( text );
 604 }
 605
 606 wxString wxTextCtrl::GetLineText( long lineNo ) const
 607 {
 608     if (m_windowStyle & wxTE_MULTILINE)
 609     {
 610 #ifndef __WXGTK20__
 611         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 612         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 613
 614         if (text)
 615         {
 616             wxString buf(wxT(""));
 617             long i;
 618             int currentLine = 0;
 619             for (i = 0; currentLine != lineNo && text[i]; i++ )
 620                 if (text[i] == '\n')
 621             currentLine++;
 622             // Now get the text
 623             int j;
 624             for (j = 0; text[i] && text[i] != '\n'; i++, j++ )
 625                 buf += text[i];
 626
 627             g_free( text );
 628             return buf;
 629         }
 630         else
 631 #endif
 632         {
 633             return wxEmptyString;
 634         }
 635     }
 636     else
 637     {
 638         if (lineNo == 0) return GetValue();
 639         return wxEmptyString;
 640     }
 641 }
 642
 643 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 644 {
 645   /* If you implement this, don't forget to update the documentation!
 646    * (file docs/latex/wx/text.tex) */
 647     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
 648 }
 649
 650 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
 651 {
 652     if ( m_windowStyle & wxTE_MULTILINE )
 653     {
 654         wxString text = GetValue();
 655
 656         // cast to prevent warning. But pos really should've been unsigned.
 657         if( (unsigned long)pos > text.Len()  )
 658             return FALSE;
 659
 660         *x=0;   // First Col
 661         *y=0;   // First Line
 662
 663         const wxChar* stop = text.c_str() + pos;
 664         for ( const wxChar *p = text.c_str(); p < stop; p++ )
 665         {
 666             if (*p == wxT('\n'))
 667             {
 668                 (*y)++;
 669                 *x=0;
 670             }
 671             else
 672                 (*x)++;
 673         }
 674     }
 675     else // single line control
 676     {
 677         if ( pos <= GTK_ENTRY(m_text)->text_length )
 678         {
 679             *y = 0;
 680             *x = pos;
 681         }
 682         else
 683         {
 684             // index out of bounds
 685             return FALSE;
 686         }
 687     }
 688
 689     return TRUE;
 690 }
 691
 692 long wxTextCtrl::XYToPosition(long x, long y ) const
 693 {
 694     if (!(m_windowStyle & wxTE_MULTILINE)) return 0;
 695
 696     long pos=0;
 697     for( int i=0; i<y; i++ ) pos += GetLineLength(i) + 1; // one for '\n'
 698
 699     pos += x;
 700     return pos;
 701 }
 702
 703 int wxTextCtrl::GetLineLength(long lineNo) const
 704 {
 705     wxString str = GetLineText (lineNo);
 706     return (int) str.Length();
 707 }
 708
 709 int wxTextCtrl::GetNumberOfLines() const
 710 {
 711     if (m_windowStyle & wxTE_MULTILINE)
 712     {
 713 #ifdef __WXGTK20__
 714         GtkTextBuffer *buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 715
 716         return gtk_text_buffer_get_line_count( buffer );
 717 #else
 718         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 719         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 720
 721         if (text)
 722         {
 723             int currentLine = 0;
 724             for (int i = 0; i < len; i++ )
 725             {
 726                 if (text[i] == '\n')
 727                     currentLine++;
 728             }
 729             g_free( text );
 730
 731             // currentLine is 0 based, add 1 to get number of lines
 732             return currentLine + 1;
 733         }
 734         else
 735         {
 736             return 0;
 737         }
 738 #endif
 739     }
 740     else
 741     {
 742         return 1;
 743     }
 744 }
 745
 746 void wxTextCtrl::SetInsertionPoint( long pos )
 747 {
 748     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 749
 750     if (m_windowStyle & wxTE_MULTILINE)
 751     {
 752 #ifdef __WXGTK20__
 753         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 754         GtkTextIter iter;
 755         gtk_text_buffer_get_iter_at_offset( text_buffer, &iter, pos );
 756         gtk_text_buffer_place_cursor( text_buffer, &iter );
 757 #else
 758         gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 759           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 760
 761         /* we fake a set_point by inserting and deleting. as the user
 762            isn't supposed to get to know about this non-sense, we
 763            disconnect so that no events are sent to the user program. */
 764
 765         gint tmp = (gint)pos;
 766         gtk_editable_insert_text( GTK_EDITABLE(m_text), " ", 1, &tmp );
 767         gtk_editable_delete_text( GTK_EDITABLE(m_text), tmp-1, tmp );
 768
 769         gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 770           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 771
 772         // bring editable's cursor uptodate. Bug in GTK.
 773         SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
 774 #endif
 775     }
 776     else
 777     {
 778         gtk_entry_set_position( GTK_ENTRY(m_text), (int)pos );
 779
 780         // Bring editable's cursor uptodate. Bug in GTK.
 781         SET_EDITABLE_POS(m_text, (guint32)pos);
 782     }
 783 }
 784
 785 void wxTextCtrl::SetInsertionPointEnd()
 786 {
 787     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 788
 789     if (m_windowStyle & wxTE_MULTILINE)
 790     {
 791 #ifdef __WXGTK20__
 792         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 793         GtkTextIter end;
 794         gtk_text_buffer_get_end_iter( text_buffer, &end );
 795         gtk_text_buffer_place_cursor( text_buffer, &end );
 796 #else
 797         SetInsertionPoint(gtk_text_get_length(GTK_TEXT(m_text)));
 798 #endif
 799     }
 800     else
 801     {
 802         gtk_entry_set_position( GTK_ENTRY(m_text), -1 );
 803     }
 804 }
 805
 806 void wxTextCtrl::SetEditable( bool editable )
 807 {
 808     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 809
 810     if (m_windowStyle & wxTE_MULTILINE)
 811     {
 812 #ifdef __WXGTK20__
 813         gtk_text_view_set_editable( GTK_TEXT_VIEW(m_text), editable );
 814 #else
 815         gtk_text_set_editable( GTK_TEXT(m_text), editable );
 816 #endif
 817     }
 818     else
 819     {
 820         gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
 821     }
 822 }
 823
 824 bool wxTextCtrl::Enable( bool enable )
 825 {
 826     if (!wxWindowBase::Enable(enable))
 827     {
 828         // nothing to do
 829         return FALSE;
 830     }
 831
 832     if (m_windowStyle & wxTE_MULTILINE)
 833     {
 834 #ifdef __WXGTK20__
 835         SetEditable( enable );
 836 #else
 837         gtk_text_set_editable( GTK_TEXT(m_text), enable );
 838         OnParentEnable(enable);
 839 #endif
 840     }
 841     else
 842     {
 843         gtk_widget_set_sensitive( m_text, enable );
 844     }
 845
 846     return TRUE;
 847 }
 848
 849 // wxGTK-specific: called recursively by Enable,
 850 // to give widgets an oppprtunity to correct their colours after they
 851 // have been changed by Enable
 852 void wxTextCtrl::OnParentEnable( bool enable )
 853 {
 854     // If we have a custom background colour, we use this colour in both
 855     // disabled and enabled mode, or we end up with a different colour under the
 856     // text.
 857     wxColour oldColour = GetBackgroundColour();
 858     if (oldColour.Ok())
 859     {
 860         // Need to set twice or it'll optimize the useful stuff out
 861         if (oldColour == * wxWHITE)
 862             SetBackgroundColour(*wxBLACK);
 863         else
 864             SetBackgroundColour(*wxWHITE);
 865         SetBackgroundColour(oldColour);
 866     }
 867 }
 868
 869 void wxTextCtrl::DiscardEdits()
 870 {
 871     m_modified = FALSE;
 872 }
 873
 874 // ----------------------------------------------------------------------------
 875 // max text length support
 876 // ----------------------------------------------------------------------------
 877
 878 void wxTextCtrl::IgnoreNextTextUpdate()
 879 {
 880     m_ignoreNextUpdate = TRUE;
 881 }
 882
 883 bool wxTextCtrl::IgnoreTextUpdate()
 884 {
 885     if ( m_ignoreNextUpdate )
 886     {
 887         m_ignoreNextUpdate = FALSE;
 888
 889         return TRUE;
 890     }
 891
 892     return FALSE;
 893 }
 894
 895 void wxTextCtrl::SetMaxLength(unsigned long len)
 896 {
 897     if ( !HasFlag(wxTE_MULTILINE) )
 898     {
 899         gtk_entry_set_max_length(GTK_ENTRY(m_text), len);
 900
 901         // there is a bug in GTK+ 1.2.x: "changed" signal is emitted even if
 902         // we had tried to enter more text than allowed by max text length and
 903         // the text wasn't really changed
 904         //
 905         // to detect this and generate TEXT_MAXLEN event instead of
 906         // TEXT_CHANGED one in this case we also catch "insert_text" signal
 907         //
 908         // when max len is set to 0 we disconnect our handler as it means that
 909         // we shouldn't check anything any more
 910         if ( len )
 911         {
 912             gtk_signal_connect( GTK_OBJECT(m_text),
 913                                 "insert_text",
 914                                 GTK_SIGNAL_FUNC(gtk_insert_text_callback),
 915                                 (gpointer)this);
 916         }
 917         else // no checking
 918         {
 919             gtk_signal_disconnect_by_func
 920             (
 921                 GTK_OBJECT(m_text),
 922                 GTK_SIGNAL_FUNC(gtk_insert_text_callback),
 923                 (gpointer)this
 924             );
 925         }
 926     }
 927 }
 928
 929 void wxTextCtrl::SetSelection( long from, long to )
 930 {
 931     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 932
 933     if (from == -1 && to == -1)
 934     {
 935         from = 0;
 936         to = GetValue().Length();
 937     }
 938
 939 #ifndef __WXGTK20__
 940     if ( (m_windowStyle & wxTE_MULTILINE) &&
 941          !GTK_TEXT(m_text)->line_start_cache )
 942     {
 943         // tell the programmer that it didn't work
 944         wxLogDebug(_T("Can't call SetSelection() before realizing the control"));
 945         return;
 946     }
 947 #endif
 948
 949     if (m_windowStyle & wxTE_MULTILINE)
 950     {
 951 #ifdef __WXGTK20__
 952         // ????
 953 #else
 954         gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 955 #endif
 956     }
 957     else
 958     {
 959         gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 960     }
 961 }
 962
 963 void wxTextCtrl::ShowPosition( long pos )
 964 {
 965 #ifndef __WXGTK20__
 966     if (m_windowStyle & wxTE_MULTILINE)
 967     {
 968         GtkAdjustment *vp = GTK_TEXT(m_text)->vadj;
 969         float totalLines =  (float) GetNumberOfLines();
 970         long posX;
 971         long posY;
 972         PositionToXY(pos, &posX, &posY);
 973         float posLine = (float) posY;
 974         float p = (posLine/totalLines)*(vp->upper - vp->lower) + vp->lower;
 975         gtk_adjustment_set_value(GTK_TEXT(m_text)->vadj, p);
 976     }
 977 #endif
 978 }
 979
 980 long wxTextCtrl::GetInsertionPoint() const
 981 {
 982     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
 983
 984 #ifdef __WXGTK20__
 985     if (m_windowStyle & wxTE_MULTILINE)
 986     {
 987         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 988
 989         // There is no direct accessor for the cursor, but
 990         // internally, the cursor is the "mark" called
 991         // "insert" in the text view's btree structure.
 992
 993         GtkTextMark *mark = gtk_text_buffer_get_insert( text_buffer );
 994         GtkTextIter cursor;
 995         gtk_text_buffer_get_iter_at_mark( text_buffer, &cursor, mark );
 996
 997         return gtk_text_iter_get_offset( &cursor );
 998     }
 999     else
1000 #endif
1001     {
1002     return (long) GET_EDITABLE_POS(m_text);
1003     }
1004 }
1005
1006 long wxTextCtrl::GetLastPosition() const
1007 {
1008     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1009
1010     int pos = 0;
1011
1012     if (m_windowStyle & wxTE_MULTILINE)
1013     {
1014 #ifdef __WXGTK20__
1015         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
1016         GtkTextIter end;
1017         gtk_text_buffer_get_end_iter( text_buffer, &end );
1018
1019         pos = gtk_text_iter_get_offset( &end );
1020 #else
1021         pos = gtk_text_get_length( GTK_TEXT(m_text) );
1022 #endif
1023     }
1024     else
1025     {
1026         pos = GTK_ENTRY(m_text)->text_length;
1027     }
1028
1029     return (long)pos;
1030 }
1031
1032 void wxTextCtrl::Remove( long from, long to )
1033 {
1034     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1035
1036 #ifndef __WXGTK20__
1037     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1038 #endif
1039 }
1040
1041 void wxTextCtrl::Replace( long from, long to, const wxString &value )
1042 {
1043     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1044
1045 #ifndef __WXGTK20__
1046     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1047
1048     if (!value.IsEmpty())
1049     {
1050         gint pos = (gint)from;
1051 #if wxUSE_UNICODE
1052         wxWX2MBbuf buf = value.mbc_str();
1053         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &pos );
1054 #else
1055         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &pos );
1056 #endif
1057     }
1058 #endif
1059 }
1060
1061 void wxTextCtrl::Cut()
1062 {
1063     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1064
1065 #ifndef __WXGTK20__
1066     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG );
1067 #endif
1068 }
1069
1070 void wxTextCtrl::Copy()
1071 {
1072     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1073
1074 #ifndef __WXGTK20__
1075     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG );
1076 #endif
1077 }
1078
1079 void wxTextCtrl::Paste()
1080 {
1081     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1082
1083 #ifndef __WXGTK20__
1084     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG );
1085 #endif
1086 }
1087
1088 // Undo/redo
1089 void wxTextCtrl::Undo()
1090 {
1091     // TODO
1092     wxFAIL_MSG( wxT("wxTextCtrl::Undo not implemented") );
1093 }
1094
1095 void wxTextCtrl::Redo()
1096 {
1097     // TODO
1098     wxFAIL_MSG( wxT("wxTextCtrl::Redo not implemented") );
1099 }
1100
1101 bool wxTextCtrl::CanUndo() const
1102 {
1103     // TODO
1104     //wxFAIL_MSG( wxT("wxTextCtrl::CanUndo not implemented") );
1105     return FALSE;
1106 }
1107
1108 bool wxTextCtrl::CanRedo() const
1109 {
1110     // TODO
1111     //wxFAIL_MSG( wxT("wxTextCtrl::CanRedo not implemented") );
1112     return FALSE;
1113 }
1114
1115 // If the return values from and to are the same, there is no
1116 // selection.
1117 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1118 {
1119     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1120
1121     gint from, to;
1122 #ifdef __WXGTK20__
1123     if ( !gtk_editable_get_selection_bounds(GTK_EDITABLE(m_text), &from, &to) )
1124 #else
1125     if ( !(GTK_EDITABLE(m_text)->has_selection) )
1126 #endif
1127     {
1128         from =
1129         to = GetInsertionPoint();
1130     }
1131     else // got selection
1132     {
1133 #ifndef __WXGTK20__
1134         from = (long) GTK_EDITABLE(m_text)->selection_start_pos;
1135         to = (long) GTK_EDITABLE(m_text)->selection_end_pos;
1136 #endif
1137
1138         if ( from > to )
1139         {
1140             // exchange them to be compatible with wxMSW
1141             gint tmp = from;
1142             from = to;
1143             to = tmp;
1144         }
1145     }
1146
1147     if ( fromOut )
1148         *fromOut = from;
1149     if ( toOut )
1150         *toOut = to;
1151 }
1152
1153 bool wxTextCtrl::IsEditable() const
1154 {
1155     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1156
1157 #ifdef __WXGTK20__
1158     return gtk_editable_get_editable(GTK_EDITABLE(m_text));
1159 #else
1160     return GTK_EDITABLE(m_text)->editable;
1161 #endif
1162 }
1163
1164 bool wxTextCtrl::IsModified() const
1165 {
1166     return m_modified;
1167 }
1168
1169 void wxTextCtrl::Clear()
1170 {
1171     SetValue( wxT("") );
1172 }
1173
1174 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1175 {
1176     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1177
1178     if ((key_event.KeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
1179     {
1180         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1181         event.SetEventObject(this);
1182         event.SetString(GetValue());
1183         if (GetEventHandler()->ProcessEvent(event)) return;
1184     }
1185
1186     if ((key_event.KeyCode() == WXK_RETURN) && !(m_windowStyle & wxTE_MULTILINE))
1187     {
1188         // This will invoke the dialog default action, such
1189         // as the clicking the default button.
1190
1191         wxWindow *top_frame = m_parent;
1192         while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
1193             top_frame = top_frame->GetParent();
1194
1195         if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
1196         {
1197             GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
1198
1199             if (window->default_widget)
1200             {
1201                 gtk_widget_activate (window->default_widget);
1202                 return;
1203             }
1204         }
1205     }
1206
1207     key_event.Skip();
1208 }
1209
1210 GtkWidget* wxTextCtrl::GetConnectWidget()
1211 {
1212     return GTK_WIDGET(m_text);
1213 }
1214
1215 bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
1216 {
1217     if (m_windowStyle & wxTE_MULTILINE)
1218     {
1219 #ifdef __WXGTK20__
1220         return window == gtk_text_view_get_window( GTK_TEXT_VIEW( m_text ), GTK_TEXT_WINDOW_TEXT );  // pure guesswork
1221 #else
1222         return (window == GTK_TEXT(m_text)->text_area);
1223 #endif
1224     }
1225     else
1226     {
1227         return (window == GTK_ENTRY(m_text)->text_area);
1228     }
1229 }
1230
1231 // the font will change for subsequent text insertiongs
1232 bool wxTextCtrl::SetFont( const wxFont &font )
1233 {
1234     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1235
1236     if ( !wxTextCtrlBase::SetFont(font) )
1237     {
1238         // font didn't change, nothing to do
1239         return FALSE;
1240     }
1241
1242     if ( m_windowStyle & wxTE_MULTILINE )
1243     {
1244         m_updateFont = TRUE;
1245
1246         m_defaultStyle.SetFont(font);
1247
1248         ChangeFontGlobally();
1249     }
1250
1251     return TRUE;
1252 }
1253
1254 void wxTextCtrl::ChangeFontGlobally()
1255 {
1256     // this method is very inefficient and hence should be called as rarely as
1257     // possible!
1258     wxASSERT_MSG( (m_windowStyle & wxTE_MULTILINE) && m_updateFont,
1259                   _T("shouldn't be called for single line controls") );
1260
1261     wxString value = GetValue();
1262     if ( !value.IsEmpty() )
1263     {
1264         m_updateFont = FALSE;
1265
1266         Clear();
1267         AppendText(value);
1268     }
1269 }
1270
1271 void wxTextCtrl::UpdateFontIfNeeded()
1272 {
1273     if ( m_updateFont )
1274         ChangeFontGlobally();
1275 }
1276
1277 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1278 {
1279     if ( !wxControl::SetForegroundColour(colour) )
1280         return FALSE;
1281
1282     // update default fg colour too
1283     m_defaultStyle.SetTextColour(colour);
1284
1285     return TRUE;
1286 }
1287
1288 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1289 {
1290     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1291
1292     if ( !wxControl::SetBackgroundColour( colour ) )
1293         return FALSE;
1294
1295     if (!m_widget->window)
1296         return FALSE;
1297
1298     wxColour sysbg = wxSystemSettings::GetColour( wxSYS_COLOUR_BTNFACE );
1299     if (sysbg.Red() == colour.Red() &&
1300         sysbg.Green() == colour.Green() &&
1301         sysbg.Blue() == colour.Blue())
1302     {
1303         return FALSE; // FIXME or TRUE?
1304     }
1305
1306     if (!m_backgroundColour.Ok())
1307         return FALSE;
1308
1309     if (m_windowStyle & wxTE_MULTILINE)
1310     {
1311 #ifndef __WXGTK20__
1312         GdkWindow *window = GTK_TEXT(m_text)->text_area;
1313         if (!window)
1314             return FALSE;
1315         m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
1316         gdk_window_set_background( window, m_backgroundColour.GetColor() );
1317         gdk_window_clear( window );
1318 #endif
1319     }
1320
1321     // change active background color too
1322     m_defaultStyle.SetBackgroundColour( colour );
1323
1324     return TRUE;
1325 }
1326
1327 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
1328 {
1329     /* VERY dirty way to do that - removes the required text and re-adds it
1330        with styling (FIXME) */
1331     if ( m_windowStyle & wxTE_MULTILINE )
1332     {
1333 #ifndef __WXGTK20__
1334         if ( style.IsDefault() )
1335         {
1336             // nothing to do
1337             return TRUE;
1338         }
1339
1340         gint l = gtk_text_get_length( GTK_TEXT(m_text) );
1341
1342         wxCHECK_MSG( start >= 0 && end <= l, FALSE,
1343                      _T("invalid range in wxTextCtrl::SetStyle") );
1344
1345         gint old_pos = gtk_editable_get_position( GTK_EDITABLE(m_text) );
1346         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), start, end );
1347         wxString tmp(text,*wxConvCurrent);
1348         g_free( text );
1349
1350         gtk_editable_delete_text( GTK_EDITABLE(m_text), start, end );
1351         gtk_editable_set_position( GTK_EDITABLE(m_text), start );
1352
1353 #if wxUSE_UNICODE
1354         wxWX2MBbuf buf = tmp.mbc_str();
1355         const char *txt = buf;
1356         size_t txtlen = strlen(buf);
1357 #else
1358         const char *txt = tmp;
1359         size_t txtlen = tmp.length();
1360 #endif
1361
1362         // use the attributes from style which are set in it and fall back
1363         // first to the default style and then to the text control default
1364         // colours for the others
1365         wxGtkTextInsert(m_text,
1366                         wxTextAttr::Combine(style, m_defaultStyle, this),
1367                         txt,
1368                         txtlen);
1369
1370         /* does not seem to help under GTK+ 1.2 !!!
1371         gtk_editable_set_position( GTK_EDITABLE(m_text), old_pos ); */
1372         SetInsertionPoint( old_pos );
1373 #endif
1374         return TRUE;
1375     }
1376     else // singe line
1377     {
1378         // cannot do this for GTK+'s Entry widget
1379         return FALSE;
1380     }
1381 }
1382
1383 void wxTextCtrl::ApplyWidgetStyle()
1384 {
1385     if (m_windowStyle & wxTE_MULTILINE)
1386     {
1387         // how ?
1388     }
1389     else
1390     {
1391         SetWidgetStyle();
1392         gtk_widget_set_style( m_text, m_widgetStyle );
1393     }
1394 }
1395
1396 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1397 {
1398     Cut();
1399 }
1400
1401 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1402 {
1403     Copy();
1404 }
1405
1406 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1407 {
1408     Paste();
1409 }
1410
1411 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1412 {
1413     Undo();
1414 }
1415
1416 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1417 {
1418     Redo();
1419 }
1420
1421 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1422 {
1423     event.Enable( CanCut() );
1424 }
1425
1426 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1427 {
1428     event.Enable( CanCopy() );
1429 }
1430
1431 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1432 {
1433     event.Enable( CanPaste() );
1434 }
1435
1436 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1437 {
1438     event.Enable( CanUndo() );
1439 }
1440
1441 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1442 {
1443     event.Enable( CanRedo() );
1444 }
1445
1446 void wxTextCtrl::OnInternalIdle()
1447 {
1448     wxCursor cursor = m_cursor;
1449     if (g_globalCursor.Ok()) cursor = g_globalCursor;
1450
1451     if (cursor.Ok())
1452     {
1453 #ifndef __WXGTK20__
1454         GdkWindow *window = (GdkWindow*) NULL;
1455         if (HasFlag(wxTE_MULTILINE))
1456             window = GTK_TEXT(m_text)->text_area;
1457         else
1458             window = GTK_ENTRY(m_text)->text_area;
1459
1460         if (window)
1461             gdk_window_set_cursor( window, cursor.GetCursor() );
1462
1463         if (!g_globalCursor.Ok())
1464             cursor = *wxSTANDARD_CURSOR;
1465
1466         window = m_widget->window;
1467         if ((window) && !(GTK_WIDGET_NO_WINDOW(m_widget)))
1468             gdk_window_set_cursor( window, cursor.GetCursor() );
1469 #endif
1470     }
1471
1472     if (g_delayedFocus == this)
1473     {
1474         if (GTK_WIDGET_REALIZED(m_widget))
1475         {
1476             gtk_widget_grab_focus( m_widget );
1477             g_delayedFocus = NULL;
1478         }
1479     }
1480
1481     UpdateWindowUI();
1482 }
1483
1484 wxSize wxTextCtrl::DoGetBestSize() const
1485 {
1486     // FIXME should be different for multi-line controls...
1487     wxSize ret( wxControl::DoGetBestSize() );
1488     return wxSize(80, ret.y);
1489 }
1490
1491 // ----------------------------------------------------------------------------
1492 // freeze/thaw
1493 // ----------------------------------------------------------------------------
1494
1495 void wxTextCtrl::Freeze()
1496 {
1497 #ifndef __WXGTK20__
1498     if ( HasFlag(wxTE_MULTILINE) )
1499     {
1500         gtk_text_freeze(GTK_TEXT(m_text));
1501     }
1502 #endif
1503 }
1504
1505 void wxTextCtrl::Thaw()
1506 {
1507 #ifndef __WXGTK20__
1508     if ( HasFlag(wxTE_MULTILINE) )
1509     {
1510         GTK_TEXT(m_text)->vadj->value = 0.0;
1511
1512         gtk_text_thaw(GTK_TEXT(m_text));
1513     }
1514 #endif
1515 }
1516
1517 // ----------------------------------------------------------------------------
1518 // scrolling
1519 // ----------------------------------------------------------------------------
1520
1521 GtkAdjustment *wxTextCtrl::GetVAdj() const
1522 {
1523 #ifdef __WXGTK20__
1524     return NULL;
1525 #else
1526     return HasFlag(wxTE_MULTILINE) ? GTK_TEXT(m_text)->vadj : NULL;
1527 #endif
1528 }
1529
1530 bool wxTextCtrl::DoScroll(GtkAdjustment *adj, int diff)
1531 {
1532 #ifndef __WXGTK20__
1533     float value = adj->value + diff;
1534
1535     if ( value < 0 )
1536         value = 0;
1537
1538     float upper = adj->upper - adj->page_size;
1539     if ( value > upper )
1540         value = upper;
1541
1542     // did we noticeably change the scroll position?
1543     if ( fabs(adj->value - value) < 0.2 )
1544     {
1545         // well, this is what Robert does in wxScrollBar, so it must be good...
1546         return FALSE;
1547     }
1548
1549     adj->value = value;
1550
1551     gtk_signal_emit_by_name(GTK_OBJECT(adj), "value_changed");
1552
1553 #endif
1554     return TRUE;
1555 }
1556
1557 bool wxTextCtrl::ScrollLines(int lines)
1558 {
1559 #ifdef __WXGTK20__
1560     return FALSE;
1561 #else
1562     GtkAdjustment *adj = GetVAdj();
1563     if ( !adj )
1564         return FALSE;
1565
1566     // this is hardcoded to 10 in GTK+ 1.2 (great idea)
1567     static const int KEY_SCROLL_PIXELS = 10;
1568
1569     return DoScroll(adj, lines*KEY_SCROLL_PIXELS);
1570 #endif
1571 }
1572
1573 bool wxTextCtrl::ScrollPages(int pages)
1574 {
1575 #ifdef __WXGTK20__
1576     return FALSE;
1577 #else
1578     GtkAdjustment *adj = GetVAdj();
1579     if ( !adj )
1580         return FALSE;
1581
1582     return DoScroll(adj, (int)ceil(pages*adj->page_increment));
1583 #endif
1584 }
1585