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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  11 #pragma implementation "textctrl.h"
  12 #endif
  13
  14 // For compilers that support precompilation, includes "wx.h".
  15 #include "wx/wxprec.h"
  16
  17 #include "wx/textctrl.h"
  18 #include "wx/utils.h"
  19 #include "wx/intl.h"
  20 #include "wx/log.h"
  21 #include "wx/settings.h"
  22 #include "wx/panel.h"
  23 #include "wx/strconv.h"
  24 #include "wx/fontutil.h"        // for wxNativeFontInfo (GetNativeFontInfo())
  25
  26 #include <sys/types.h>
  27 #include <sys/stat.h>
  28 #include <ctype.h>
  29 #include <math.h>               // for fabs
  30
  31 #include "wx/gtk/private.h"
  32 #include <gdk/gdkkeysyms.h>
  33
  34 //-----------------------------------------------------------------------------
  35 // idle system
  36 //-----------------------------------------------------------------------------
  37
  38 extern void wxapp_install_idle_handler();
  39 extern bool g_isIdle;
  40
  41 //-----------------------------------------------------------------------------
  42 // data
  43 //-----------------------------------------------------------------------------
  44
  45 extern bool       g_blockEventsOnDrag;
  46 extern wxCursor   g_globalCursor;
  47 extern wxWindowGTK *g_delayedFocus;
  48
  49 // ----------------------------------------------------------------------------
  50 // helpers
  51 // ----------------------------------------------------------------------------
  52
  53 #ifdef __WXGTK20__
  54 static void wxGtkTextInsert(GtkWidget *text,
  55                             GtkTextBuffer *text_buffer,
  56                             const wxTextAttr& attr,
  57                             wxCharBuffer buffer)
  58
  59 {
  60     PangoFontDescription *font_description = attr.HasFont()
  61                          ? attr.GetFont().GetNativeFontInfo()->description
  62                          : NULL;
  63
  64     GdkColor *colFg = attr.HasTextColour() ? attr.GetTextColour().GetColor()
  65                                            : NULL;
  66
  67     GdkColor *colBg = attr.HasBackgroundColour()
  68                         ? attr.GetBackgroundColour().GetColor()
  69                         : NULL;
  70
  71     GtkTextTag *tag;
  72     tag = gtk_text_buffer_create_tag( text_buffer, NULL, "font-desc", font_description,
  73                                      "foreground-gdk", colFg,
  74                                      "background-gdk", colBg, NULL );
  75
  76     GtkTextIter iter;
  77     gtk_text_buffer_get_iter_at_mark( text_buffer, &iter,
  78                                      gtk_text_buffer_get_insert (text_buffer) );
  79
  80     gtk_text_buffer_insert_with_tags( text_buffer, &iter, buffer, strlen(buffer), tag, NULL );
  81 }
  82 #else
  83 static void wxGtkTextInsert(GtkWidget *text,
  84                             const wxTextAttr& attr,
  85                             const char *txt,
  86                             size_t len)
  87 {
  88     GdkFont *font = attr.HasFont() ? attr.GetFont().GetInternalFont()
  89                                    : NULL;
  90
  91     GdkColor *colFg = attr.HasTextColour() ? attr.GetTextColour().GetColor()
  92                                            : NULL;
  93
  94     GdkColor *colBg = attr.HasBackgroundColour()
  95                         ? attr.GetBackgroundColour().GetColor()
  96                         : NULL;
  97
  98     gtk_text_insert( GTK_TEXT(text), font, colFg, colBg, txt, len );
  99 }
 100 #endif // GTK 1.x
 101
 102 // ----------------------------------------------------------------------------
 103 // "insert_text" for GtkEntry
 104 // ----------------------------------------------------------------------------
 105
 106 static void
 107 gtk_insert_text_callback(GtkEditable *editable,
 108                          const gchar *new_text,
 109                          gint new_text_length,
 110                          gint *position,
 111                          wxTextCtrl *win)
 112 {
 113     if (g_isIdle)
 114         wxapp_install_idle_handler();
 115
 116     // we should only be called if we have a max len limit at all
 117     GtkEntry *entry = GTK_ENTRY (editable);
 118
 119     wxCHECK_RET( entry->text_max_length, _T("shouldn't be called") );
 120
 121     // check that we don't overflow the max length limit
 122     //
 123     // FIXME: this doesn't work when we paste a string which is going to be
 124     //        truncated
 125     if ( entry->text_length == entry->text_max_length )
 126     {
 127         // we don't need to run the base class version at all
 128         gtk_signal_emit_stop_by_name(GTK_OBJECT(editable), "insert_text");
 129
 130         // remember that the next changed signal is to be ignored to avoid
 131         // generating a dummy wxEVT_COMMAND_TEXT_UPDATED event
 132         win->IgnoreNextTextUpdate();
 133
 134         // and generate the correct one ourselves
 135         wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, win->GetId());
 136         event.SetEventObject(win);
 137         event.SetString(win->GetValue());
 138         win->GetEventHandler()->ProcessEvent( event );
 139     }
 140 }
 141
 142 //-----------------------------------------------------------------------------
 143 //  "changed"
 144 //-----------------------------------------------------------------------------
 145
 146 static void
 147 gtk_text_changed_callback( GtkWidget *widget, wxTextCtrl *win )
 148 {
 149     if ( win->IgnoreTextUpdate() )
 150         return;
 151
 152     if (!win->m_hasVMT) return;
 153
 154     if (g_isIdle)
 155         wxapp_install_idle_handler();
 156
 157     win->SetModified();
 158     win->UpdateFontIfNeeded();
 159
 160     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->GetId() );
 161     event.SetEventObject( win );
 162     event.SetString( win->GetValue() );
 163     win->GetEventHandler()->ProcessEvent( event );
 164 }
 165
 166 //-----------------------------------------------------------------------------
 167 // "changed" from vertical scrollbar
 168 //-----------------------------------------------------------------------------
 169
 170 #ifndef __WXGTK20__
 171 static void
 172 gtk_scrollbar_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
 173 {
 174     if (!win->m_hasVMT) return;
 175
 176     if (g_isIdle)
 177         wxapp_install_idle_handler();
 178
 179     win->CalculateScrollbar();
 180 }
 181 #endif
 182
 183 // ----------------------------------------------------------------------------
 184 // redraw callback for multiline text
 185 // ----------------------------------------------------------------------------
 186
 187 #ifndef __WXGTK20__
 188
 189 // redrawing a GtkText from inside a wxYield() call results in crashes (the
 190 // text sample shows it in its "Add lines" command which shows wxProgressDialog
 191 // which implicitly calls wxYield()) so we override GtkText::draw() and simply
 192 // don't do anything if we're inside wxYield()
 193
 194 extern bool wxIsInsideYield;
 195
 196 extern "C" {
 197     typedef void (*GtkDrawCallback)(GtkWidget *widget, GdkRectangle *rect);
 198 }
 199
 200 static GtkDrawCallback gs_gtk_text_draw = NULL;
 201
 202 extern "C"
 203 void wxgtk_text_draw( GtkWidget *widget, GdkRectangle *rect)
 204 {
 205     if ( !wxIsInsideYield )
 206     {
 207         wxCHECK_RET( gs_gtk_text_draw != wxgtk_text_draw,
 208                      _T("infinite recursion in wxgtk_text_draw aborted") );
 209
 210         gs_gtk_text_draw(widget, rect);
 211     }
 212 }
 213
 214 #endif // __WXGTK20__
 215
 216 //-----------------------------------------------------------------------------
 217 //  wxTextCtrl
 218 //-----------------------------------------------------------------------------
 219
 220 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl,wxControl)
 221
 222 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
 223     EVT_CHAR(wxTextCtrl::OnChar)
 224
 225     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 226     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 227     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 228     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 229     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 230
 231     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 232     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 233     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 234     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 235     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 236 END_EVENT_TABLE()
 237
 238 void wxTextCtrl::Init()
 239 {
 240     m_ignoreNextUpdate =
 241     m_modified = FALSE;
 242     m_updateFont = FALSE;
 243     m_text =
 244     m_vScrollbar = (GtkWidget *)NULL;
 245 }
 246
 247 wxTextCtrl::wxTextCtrl( wxWindow *parent,
 248                         wxWindowID id,
 249                         const wxString &value,
 250                         const wxPoint &pos,
 251                         const wxSize &size,
 252                         long style,
 253                         const wxValidator& validator,
 254                         const wxString &name )
 255 {
 256     Init();
 257
 258     Create( parent, id, value, pos, size, style, validator, name );
 259 }
 260
 261 bool wxTextCtrl::Create( wxWindow *parent,
 262                          wxWindowID id,
 263                          const wxString &value,
 264                          const wxPoint &pos,
 265                          const wxSize &size,
 266                          long style,
 267                          const wxValidator& validator,
 268                          const wxString &name )
 269 {
 270     m_needParent = TRUE;
 271     m_acceptsFocus = TRUE;
 272
 273     if (!PreCreation( parent, pos, size ) ||
 274         !CreateBase( parent, id, pos, size, style, validator, name ))
 275     {
 276         wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
 277         return FALSE;
 278     }
 279
 280
 281     m_vScrollbarVisible = FALSE;
 282
 283     bool multi_line = (style & wxTE_MULTILINE) != 0;
 284
 285 #ifdef __WXGTK20__
 286     GtkTextBuffer *buffer = NULL;
 287 #endif
 288
 289     if (multi_line)
 290     {
 291 #ifdef __WXGTK20__
 292         // Create view
 293         m_text = gtk_text_view_new();
 294
 295         buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 296
 297         // create scrolled window
 298         m_widget = gtk_scrolled_window_new( NULL, NULL );
 299         gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW( m_widget ),
 300                                         GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC );
 301
 302         // Insert view into scrolled window
 303         gtk_container_add( GTK_CONTAINER(m_widget), m_text );
 304
 305         // Global settings which can be overridden by tags, I guess.
 306         if (HasFlag( wxHSCROLL ))
 307             gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), GTK_WRAP_NONE );
 308         else
 309             gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), GTK_WRAP_WORD );
 310
 311         if (!HasFlag(wxNO_BORDER))
 312             gtk_scrolled_window_set_shadow_type( GTK_SCROLLED_WINDOW(m_widget), GTK_SHADOW_IN );
 313
 314         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 315 #else
 316         // create our control ...
 317         m_text = gtk_text_new( (GtkAdjustment *) NULL, (GtkAdjustment *) NULL );
 318
 319         // ... and put into the upper left hand corner of the table
 320         bool bHasHScrollbar = FALSE;
 321         m_widget = gtk_table_new(bHasHScrollbar ? 2 : 1, 2, FALSE);
 322         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 323         gtk_table_attach( GTK_TABLE(m_widget), m_text, 0, 1, 0, 1,
 324                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 325                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 326                        0, 0);
 327
 328         // always wrap words
 329         gtk_text_set_word_wrap( GTK_TEXT(m_text), TRUE );
 330
 331         // finally, put the vertical scrollbar in the upper right corner
 332         m_vScrollbar = gtk_vscrollbar_new( GTK_TEXT(m_text)->vadj );
 333         GTK_WIDGET_UNSET_FLAGS( m_vScrollbar, GTK_CAN_FOCUS );
 334         gtk_table_attach(GTK_TABLE(m_widget), m_vScrollbar, 1, 2, 0, 1,
 335                      GTK_FILL,
 336                      (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
 337                      0, 0);
 338 #endif
 339     }
 340     else
 341     {
 342         // a single-line text control: no need for scrollbars
 343         m_widget =
 344         m_text = gtk_entry_new();
 345     }
 346
 347     m_parent->DoAddChild( this );
 348
 349     m_focusWidget = m_text;
 350
 351     PostCreation();
 352     InheritAttributes();
 353
 354     wxSize size_best( DoGetBestSize() );
 355     wxSize new_size( size );
 356     if (new_size.x == -1)
 357         new_size.x = size_best.x;
 358     if (new_size.y == -1)
 359         new_size.y = size_best.y;
 360     if ((new_size.x != size.x) || (new_size.y != size.y))
 361         SetSize( new_size.x, new_size.y );
 362
 363     if (multi_line)
 364         gtk_widget_show(m_text);
 365
 366 #ifndef __WXGTK20__
 367     if (multi_line)
 368     {
 369         gtk_signal_connect(GTK_OBJECT(GTK_TEXT(m_text)->vadj), "changed",
 370           (GtkSignalFunc) gtk_scrollbar_changed_callback, (gpointer) this );
 371
 372         // only initialize gs_gtk_text_draw once, starting from the next the
 373         // klass::draw will already be wxgtk_text_draw
 374         if ( !gs_gtk_text_draw )
 375         {
 376             GtkDrawCallback&
 377                 draw = GTK_WIDGET_CLASS(GTK_OBJECT(m_text)->klass)->draw;
 378
 379             gs_gtk_text_draw = draw;
 380
 381             draw = wxgtk_text_draw;
 382         }
 383     }
 384 #endif // GTK+ 1.x
 385
 386     if (!value.IsEmpty())
 387     {
 388 #ifdef __WXGTK20__
 389         SetValue( value );
 390 #else
 391
 392 #if !GTK_CHECK_VERSION(1, 2, 0)
 393         // if we don't realize it, GTK 1.0.6 dies with a SIGSEGV in
 394         // gtk_editable_insert_text()
 395         gtk_widget_realize(m_text);
 396 #endif // GTK 1.0
 397
 398         gint tmp = 0;
 399 #if wxUSE_UNICODE
 400         wxWX2MBbuf val = value.mbc_str();
 401         gtk_editable_insert_text( GTK_EDITABLE(m_text), val, strlen(val), &tmp );
 402 #else
 403         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &tmp );
 404 #endif
 405
 406         if (multi_line)
 407         {
 408             // Bring editable's cursor uptodate. Bug in GTK.
 409             SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
 410         }
 411
 412 #endif
 413     }
 414
 415     if (style & wxTE_PASSWORD)
 416     {
 417         if (!multi_line)
 418             gtk_entry_set_visibility( GTK_ENTRY(m_text), FALSE );
 419     }
 420
 421     if (style & wxTE_READONLY)
 422     {
 423         if (!multi_line)
 424             gtk_entry_set_editable( GTK_ENTRY(m_text), FALSE );
 425 #ifdef __WXGTK20__
 426         else
 427             gtk_text_view_set_editable( GTK_TEXT_VIEW( m_text), FALSE);
 428     }
 429 #else
 430     }
 431     else
 432     {
 433         if (multi_line)
 434             gtk_text_set_editable( GTK_TEXT(m_text), 1 );
 435     }
 436 #endif
 437
 438     // We want to be notified about text changes.
 439 #ifdef __WXGTK20__
 440     if (multi_line)
 441     {
 442         g_signal_connect( G_OBJECT(buffer), "changed",
 443             GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 444     }
 445     else
 446 #endif
 447     {
 448         gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 449             GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 450     }
 451
 452     // we don't set a valid background colour, because the window
 453     // manager should use a default one
 454     m_backgroundColour = wxColour();
 455
 456     wxColour colFg = parent->GetForegroundColour();
 457     SetForegroundColour( colFg );
 458
 459     m_cursor = wxCursor( wxCURSOR_IBEAM );
 460
 461     wxTextAttr attrDef( colFg, m_backgroundColour, parent->GetFont() );
 462     SetDefaultStyle( attrDef );
 463
 464     Show( TRUE );
 465
 466     return TRUE;
 467 }
 468
 469 void wxTextCtrl::CalculateScrollbar()
 470 {
 471 #ifndef __WXGTK20__
 472     if ((m_windowStyle & wxTE_MULTILINE) == 0) return;
 473
 474     GtkAdjustment *adj = GTK_TEXT(m_text)->vadj;
 475
 476     if (adj->upper - adj->page_size < 0.8)
 477     {
 478         if (m_vScrollbarVisible)
 479         {
 480             gtk_widget_hide( m_vScrollbar );
 481             m_vScrollbarVisible = FALSE;
 482         }
 483     }
 484     else
 485     {
 486         if (!m_vScrollbarVisible)
 487         {
 488             gtk_widget_show( m_vScrollbar );
 489             m_vScrollbarVisible = TRUE;
 490         }
 491     }
 492 #endif
 493 }
 494
 495 wxString wxTextCtrl::GetValue() const
 496 {
 497     wxCHECK_MSG( m_text != NULL, wxT(""), wxT("invalid text ctrl") );
 498
 499     wxString tmp;
 500     if (m_windowStyle & wxTE_MULTILINE)
 501     {
 502 #ifdef __WXGTK20__
 503         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 504
 505         GtkTextIter start;
 506         gtk_text_buffer_get_start_iter( text_buffer, &start );
 507         GtkTextIter end;
 508         gtk_text_buffer_get_end_iter( text_buffer, &end );
 509         gchar *text = gtk_text_buffer_get_text( text_buffer, &start, &end, TRUE );
 510
 511 #if wxUSE_UNICODE
 512         wxWCharBuffer buffer( wxConvUTF8.cMB2WX( text ) );
 513 #else
 514         wxCharBuffer buffer( wxConvLocal.cWC2WX( wxConvUTF8.cMB2WC( text ) ) );
 515 #endif
 516         tmp = buffer;
 517
 518         g_free( text );
 519 #else
 520         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 521         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 522         tmp = text;
 523         g_free( text );
 524 #endif
 525     }
 526     else
 527     {
 528         tmp = wxGTK_CONV_BACK( gtk_entry_get_text( GTK_ENTRY(m_text) ) );
 529     }
 530
 531     return tmp;
 532 }
 533
 534 void wxTextCtrl::SetValue( const wxString &value )
 535 {
 536     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 537
 538     if (m_windowStyle & wxTE_MULTILINE)
 539     {
 540 #ifdef __WXGTK20__
 541
 542 #if wxUSE_UNICODE
 543         wxCharBuffer buffer( wxConvUTF8.cWX2MB( value) );
 544 #else
 545         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( value ) ) );
 546 #endif
 547         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 548         gtk_text_buffer_set_text( text_buffer, buffer, strlen(buffer) );
 549
 550 #else
 551         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 552         gtk_editable_delete_text( GTK_EDITABLE(m_text), 0, len );
 553         len = 0;
 554         gtk_editable_insert_text( GTK_EDITABLE(m_text), value.mbc_str(), value.Length(), &len );
 555 #endif
 556     }
 557     else
 558     {
 559         gtk_entry_set_text( GTK_ENTRY(m_text), wxGTK_CONV( value ) );
 560     }
 561
 562     // GRG, Jun/2000: Changed this after a lot of discussion in
 563     //   the lists. wxWindows 2.2 will have a set of flags to
 564     //   customize this behaviour.
 565     SetInsertionPoint(0);
 566
 567     m_modified = FALSE;
 568 }
 569
 570 void wxTextCtrl::WriteText( const wxString &text )
 571 {
 572     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 573
 574     if ( text.empty() )
 575         return;
 576
 577     if ( m_windowStyle & wxTE_MULTILINE )
 578     {
 579 #ifdef __WXGTK20__
 580
 581 #if wxUSE_UNICODE
 582         wxCharBuffer buffer( wxConvUTF8.cWX2MB( text ) );
 583 #else
 584         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( text ) ) );
 585 #endif
 586         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 587
 588         // TODO: Call whatever is needed to delete the selection.
 589         wxGtkTextInsert( m_text, text_buffer, m_defaultStyle, buffer );
 590
 591         GtkAdjustment *adj = gtk_scrolled_window_get_vadjustment( GTK_SCROLLED_WINDOW(m_widget) );
 592         // Scroll to cursor, but only if scrollbar thumb is at the very bottom
 593         if ( adj->value == adj->upper - adj->page_size )
 594         {
 595             gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text),
 596                     gtk_text_buffer_get_insert( text_buffer ), 0.0, FALSE, 0.0, 1.0 );
 597         }
 598 #else // GTK 1.x
 599         // After cursor movements, gtk_text_get_point() is wrong by one.
 600         gtk_text_set_point( GTK_TEXT(m_text), GET_EDITABLE_POS(m_text) );
 601
 602         // always use m_defaultStyle, even if it is empty as otherwise
 603         // resetting the style and appending some more text wouldn't work: if
 604         // we don't specify the style explicitly, the old style would be used
 605         gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
 606         wxGtkTextInsert(m_text, m_defaultStyle, text.c_str(), text.Len());
 607
 608         // we called wxGtkTextInsert with correct font, no need to do anything
 609         // in UpdateFontIfNeeded() any longer
 610         if ( !text.empty() )
 611         {
 612             m_updateFont = FALSE;
 613         }
 614
 615         // Bring editable's cursor back uptodate.
 616         SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
 617 #endif // GTK 1.x/2.0
 618     }
 619     else // single line
 620     {
 621         // First remove the selection if there is one
 622         gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
 623
 624         // This moves the cursor pos to behind the inserted text.
 625         gint len = GET_EDITABLE_POS(m_text);
 626
 627 #ifdef __WXGTK20__
 628
 629 #if wxUSE_UNICODE
 630         wxCharBuffer buffer( wxConvUTF8.cWX2MB( text ) );
 631 #else
 632         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( text ) ) );
 633 #endif
 634         gtk_editable_insert_text( GTK_EDITABLE(m_text), buffer, strlen(buffer), &len );
 635
 636 #else
 637         gtk_editable_insert_text( GTK_EDITABLE(m_text), text.c_str(), text.Len(), &len );
 638 #endif
 639
 640         // Bring entry's cursor uptodate.
 641         gtk_entry_set_position( GTK_ENTRY(m_text), len );
 642     }
 643
 644     m_modified = TRUE;
 645 }
 646
 647 void wxTextCtrl::AppendText( const wxString &text )
 648 {
 649     SetInsertionPointEnd();
 650     WriteText( text );
 651 }
 652
 653 wxString wxTextCtrl::GetLineText( long lineNo ) const
 654 {
 655     if (m_windowStyle & wxTE_MULTILINE)
 656     {
 657 #ifndef __WXGTK20__
 658         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 659         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 660
 661         if (text)
 662         {
 663             wxString buf(wxT(""));
 664             long i;
 665             int currentLine = 0;
 666             for (i = 0; currentLine != lineNo && text[i]; i++ )
 667                 if (text[i] == '\n')
 668             currentLine++;
 669             // Now get the text
 670             int j;
 671             for (j = 0; text[i] && text[i] != '\n'; i++, j++ )
 672                 buf += text[i];
 673
 674             g_free( text );
 675             return buf;
 676         }
 677         else
 678         {
 679             return wxEmptyString;
 680         }
 681 #else
 682         GtkTextBuffer *text_buffer;
 683         text_buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(m_text));
 684         GtkTextIter line;
 685         gtk_text_buffer_get_iter_at_line(text_buffer,&line,lineNo);
 686         GtkTextIter end;
 687         gtk_text_buffer_get_end_iter(text_buffer,&end );
 688         gchar *text = gtk_text_buffer_get_text(text_buffer,&line,&end,TRUE);
 689         wxString result(wxGTK_CONV_BACK(text));
 690         g_free(text);
 691         return result.BeforeFirst(wxT('\n'));
 692 #endif
 693     }
 694     else
 695     {
 696         if (lineNo == 0) return GetValue();
 697         return wxEmptyString;
 698     }
 699 }
 700
 701 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 702 {
 703   /* If you implement this, don't forget to update the documentation!
 704    * (file docs/latex/wx/text.tex) */
 705     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
 706 }
 707
 708 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
 709 {
 710     if ( m_windowStyle & wxTE_MULTILINE )
 711     {
 712         wxString text = GetValue();
 713
 714         // cast to prevent warning. But pos really should've been unsigned.
 715         if( (unsigned long)pos > text.Len()  )
 716             return FALSE;
 717
 718         *x=0;   // First Col
 719         *y=0;   // First Line
 720
 721         const wxChar* stop = text.c_str() + pos;
 722         for ( const wxChar *p = text.c_str(); p < stop; p++ )
 723         {
 724             if (*p == wxT('\n'))
 725             {
 726                 (*y)++;
 727                 *x=0;
 728             }
 729             else
 730                 (*x)++;
 731         }
 732     }
 733     else // single line control
 734     {
 735         if ( pos <= GTK_ENTRY(m_text)->text_length )
 736         {
 737             *y = 0;
 738             *x = pos;
 739         }
 740         else
 741         {
 742             // index out of bounds
 743             return FALSE;
 744         }
 745     }
 746
 747     return TRUE;
 748 }
 749
 750 long wxTextCtrl::XYToPosition(long x, long y ) const
 751 {
 752     if (!(m_windowStyle & wxTE_MULTILINE)) return 0;
 753
 754     long pos=0;
 755     for( int i=0; i<y; i++ ) pos += GetLineLength(i) + 1; // one for '\n'
 756
 757     pos += x;
 758     return pos;
 759 }
 760
 761 int wxTextCtrl::GetLineLength(long lineNo) const
 762 {
 763     wxString str = GetLineText (lineNo);
 764     return (int) str.Length();
 765 }
 766
 767 int wxTextCtrl::GetNumberOfLines() const
 768 {
 769     if (m_windowStyle & wxTE_MULTILINE)
 770     {
 771 #ifdef __WXGTK20__
 772         GtkTextBuffer *buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 773
 774         return gtk_text_buffer_get_line_count( buffer );
 775 #else
 776         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 777         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 778
 779         if (text)
 780         {
 781             int currentLine = 0;
 782             for (int i = 0; i < len; i++ )
 783             {
 784                 if (text[i] == '\n')
 785                     currentLine++;
 786             }
 787             g_free( text );
 788
 789             // currentLine is 0 based, add 1 to get number of lines
 790             return currentLine + 1;
 791         }
 792         else
 793         {
 794             return 0;
 795         }
 796 #endif
 797     }
 798     else
 799     {
 800         return 1;
 801     }
 802 }
 803
 804 void wxTextCtrl::SetInsertionPoint( long pos )
 805 {
 806     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 807
 808     if (m_windowStyle & wxTE_MULTILINE)
 809     {
 810 #ifdef __WXGTK20__
 811         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 812         GtkTextIter iter;
 813         gtk_text_buffer_get_iter_at_offset( text_buffer, &iter, pos );
 814         gtk_text_buffer_place_cursor( text_buffer, &iter );
 815 #else
 816         gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 817           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 818
 819         /* we fake a set_point by inserting and deleting. as the user
 820            isn't supposed to get to know about this non-sense, we
 821            disconnect so that no events are sent to the user program. */
 822
 823         gint tmp = (gint)pos;
 824         gtk_editable_insert_text( GTK_EDITABLE(m_text), " ", 1, &tmp );
 825         gtk_editable_delete_text( GTK_EDITABLE(m_text), tmp-1, tmp );
 826
 827         gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 828           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 829
 830         // bring editable's cursor uptodate. Bug in GTK.
 831         SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
 832 #endif
 833     }
 834     else
 835     {
 836         gtk_entry_set_position( GTK_ENTRY(m_text), (int)pos );
 837
 838         // Bring editable's cursor uptodate. Bug in GTK.
 839         SET_EDITABLE_POS(m_text, (guint32)pos);
 840     }
 841 }
 842
 843 void wxTextCtrl::SetInsertionPointEnd()
 844 {
 845     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 846
 847     if (m_windowStyle & wxTE_MULTILINE)
 848     {
 849 #ifdef __WXGTK20__
 850         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 851         GtkTextIter end;
 852         gtk_text_buffer_get_end_iter( text_buffer, &end );
 853         gtk_text_buffer_place_cursor( text_buffer, &end );
 854 #else
 855         SetInsertionPoint(gtk_text_get_length(GTK_TEXT(m_text)));
 856 #endif
 857     }
 858     else
 859     {
 860         gtk_entry_set_position( GTK_ENTRY(m_text), -1 );
 861     }
 862 }
 863
 864 void wxTextCtrl::SetEditable( bool editable )
 865 {
 866     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 867
 868     if (m_windowStyle & wxTE_MULTILINE)
 869     {
 870 #ifdef __WXGTK20__
 871         gtk_text_view_set_editable( GTK_TEXT_VIEW(m_text), editable );
 872 #else
 873         gtk_text_set_editable( GTK_TEXT(m_text), editable );
 874 #endif
 875     }
 876     else
 877     {
 878         gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
 879     }
 880 }
 881
 882 bool wxTextCtrl::Enable( bool enable )
 883 {
 884     if (!wxWindowBase::Enable(enable))
 885     {
 886         // nothing to do
 887         return FALSE;
 888     }
 889
 890     if (m_windowStyle & wxTE_MULTILINE)
 891     {
 892 #ifdef __WXGTK20__
 893         SetEditable( enable );
 894 #else
 895         gtk_text_set_editable( GTK_TEXT(m_text), enable );
 896         OnParentEnable(enable);
 897 #endif
 898     }
 899     else
 900     {
 901         gtk_widget_set_sensitive( m_text, enable );
 902     }
 903
 904     return TRUE;
 905 }
 906
 907 // wxGTK-specific: called recursively by Enable,
 908 // to give widgets an oppprtunity to correct their colours after they
 909 // have been changed by Enable
 910 void wxTextCtrl::OnParentEnable( bool enable )
 911 {
 912     // If we have a custom background colour, we use this colour in both
 913     // disabled and enabled mode, or we end up with a different colour under the
 914     // text.
 915     wxColour oldColour = GetBackgroundColour();
 916     if (oldColour.Ok())
 917     {
 918         // Need to set twice or it'll optimize the useful stuff out
 919         if (oldColour == * wxWHITE)
 920             SetBackgroundColour(*wxBLACK);
 921         else
 922             SetBackgroundColour(*wxWHITE);
 923         SetBackgroundColour(oldColour);
 924     }
 925 }
 926
 927 void wxTextCtrl::MarkDirty()
 928 {
 929     m_modified = TRUE;
 930 }
 931
 932 void wxTextCtrl::DiscardEdits()
 933 {
 934     m_modified = FALSE;
 935 }
 936
 937 // ----------------------------------------------------------------------------
 938 // max text length support
 939 // ----------------------------------------------------------------------------
 940
 941 void wxTextCtrl::IgnoreNextTextUpdate()
 942 {
 943     m_ignoreNextUpdate = TRUE;
 944 }
 945
 946 bool wxTextCtrl::IgnoreTextUpdate()
 947 {
 948     if ( m_ignoreNextUpdate )
 949     {
 950         m_ignoreNextUpdate = FALSE;
 951
 952         return TRUE;
 953     }
 954
 955     return FALSE;
 956 }
 957
 958 void wxTextCtrl::SetMaxLength(unsigned long len)
 959 {
 960     if ( !HasFlag(wxTE_MULTILINE) )
 961     {
 962         gtk_entry_set_max_length(GTK_ENTRY(m_text), len);
 963
 964         // there is a bug in GTK+ 1.2.x: "changed" signal is emitted even if
 965         // we had tried to enter more text than allowed by max text length and
 966         // the text wasn't really changed
 967         //
 968         // to detect this and generate TEXT_MAXLEN event instead of
 969         // TEXT_CHANGED one in this case we also catch "insert_text" signal
 970         //
 971         // when max len is set to 0 we disconnect our handler as it means that
 972         // we shouldn't check anything any more
 973         if ( len )
 974         {
 975             gtk_signal_connect( GTK_OBJECT(m_text),
 976                                 "insert_text",
 977                                 GTK_SIGNAL_FUNC(gtk_insert_text_callback),
 978                                 (gpointer)this);
 979         }
 980         else // no checking
 981         {
 982             gtk_signal_disconnect_by_func
 983             (
 984                 GTK_OBJECT(m_text),
 985                 GTK_SIGNAL_FUNC(gtk_insert_text_callback),
 986                 (gpointer)this
 987             );
 988         }
 989     }
 990 }
 991
 992 void wxTextCtrl::SetSelection( long from, long to )
 993 {
 994     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 995
 996     if (from == -1 && to == -1)
 997     {
 998         from = 0;
 999         to = GetValue().Length();
1000     }
1001
1002 #ifndef __WXGTK20__
1003     if ( (m_windowStyle & wxTE_MULTILINE) &&
1004          !GTK_TEXT(m_text)->line_start_cache )
1005     {
1006         // tell the programmer that it didn't work
1007         wxLogDebug(_T("Can't call SetSelection() before realizing the control"));
1008         return;
1009     }
1010 #endif
1011
1012     if (m_windowStyle & wxTE_MULTILINE)
1013     {
1014 #ifdef __WXGTK20__
1015         GtkTextBuffer *buf = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
1016
1017         GtkTextIter fromi, toi;
1018         gtk_text_buffer_get_iter_at_offset( buf, &fromi, from );
1019         gtk_text_buffer_get_iter_at_offset( buf, &toi, to );
1020
1021         gtk_text_buffer_place_cursor( buf, &toi );
1022         gtk_text_buffer_move_mark_by_name( buf, "selection_bound", &fromi );
1023 #else
1024         gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1025 #endif
1026     }
1027     else
1028     {
1029         gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1030     }
1031 }
1032
1033 void wxTextCtrl::ShowPosition( long pos )
1034 {
1035     if (m_windowStyle & wxTE_MULTILINE)
1036     {
1037 #ifdef __WXGTK20__
1038         GtkTextBuffer *buf = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
1039         GtkTextIter iter;
1040         gtk_text_buffer_get_start_iter( buf, &iter );
1041         gtk_text_iter_set_offset( &iter, pos );
1042         GtkTextMark *mark = gtk_text_buffer_create_mark( buf, NULL, &iter, TRUE );
1043         gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text), mark, 0.0, FALSE, 0.0, 0.0 );
1044 #else // GTK 1.x
1045         GtkAdjustment *vp = GTK_TEXT(m_text)->vadj;
1046         float totalLines =  (float) GetNumberOfLines();
1047         long posX;
1048         long posY;
1049         PositionToXY(pos, &posX, &posY);
1050         float posLine = (float) posY;
1051         float p = (posLine/totalLines)*(vp->upper - vp->lower) + vp->lower;
1052         gtk_adjustment_set_value(GTK_TEXT(m_text)->vadj, p);
1053 #endif // GTK 1.x/2.x
1054     }
1055 }
1056
1057 long wxTextCtrl::GetInsertionPoint() const
1058 {
1059     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1060
1061 #ifdef __WXGTK20__
1062     if (m_windowStyle & wxTE_MULTILINE)
1063     {
1064         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
1065
1066         // There is no direct accessor for the cursor, but
1067         // internally, the cursor is the "mark" called
1068         // "insert" in the text view's btree structure.
1069
1070         GtkTextMark *mark = gtk_text_buffer_get_insert( text_buffer );
1071         GtkTextIter cursor;
1072         gtk_text_buffer_get_iter_at_mark( text_buffer, &cursor, mark );
1073
1074         return gtk_text_iter_get_offset( &cursor );
1075     }
1076     else
1077 #endif
1078     {
1079     return (long) GET_EDITABLE_POS(m_text);
1080     }
1081 }
1082
1083 long wxTextCtrl::GetLastPosition() const
1084 {
1085     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1086
1087     int pos = 0;
1088
1089     if (m_windowStyle & wxTE_MULTILINE)
1090     {
1091 #ifdef __WXGTK20__
1092         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
1093         GtkTextIter end;
1094         gtk_text_buffer_get_end_iter( text_buffer, &end );
1095
1096         pos = gtk_text_iter_get_offset( &end );
1097 #else
1098         pos = gtk_text_get_length( GTK_TEXT(m_text) );
1099 #endif
1100     }
1101     else
1102     {
1103         pos = GTK_ENTRY(m_text)->text_length;
1104     }
1105
1106     return (long)pos;
1107 }
1108
1109 void wxTextCtrl::Remove( long from, long to )
1110 {
1111     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1112
1113 #ifdef __WXGTK20__
1114     if (m_windowStyle & wxTE_MULTILINE)
1115     {
1116         GtkTextBuffer *
1117             text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
1118
1119         GtkTextIter fromi, toi;
1120         gtk_text_buffer_get_iter_at_offset( text_buffer, &fromi, from );
1121         gtk_text_buffer_get_iter_at_offset( text_buffer, &toi, to );
1122
1123         gtk_text_buffer_delete( text_buffer, &fromi, &toi );
1124     }
1125     else // single line
1126 #endif
1127     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1128 }
1129
1130 void wxTextCtrl::Replace( long from, long to, const wxString &value )
1131 {
1132     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1133
1134     Remove( from, to );
1135
1136     if (!value.IsEmpty())
1137     {
1138 #ifdef __WXGTK20__
1139         SetInsertionPoint( from );
1140         WriteText( value );
1141 #else // GTK 1.x
1142         gint pos = (gint)from;
1143 #if wxUSE_UNICODE
1144         wxWX2MBbuf buf = value.mbc_str();
1145         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &pos );
1146 #else
1147         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &pos );
1148 #endif // wxUSE_UNICODE
1149 #endif // GTK 1.x/2.x
1150     }
1151 }
1152
1153 void wxTextCtrl::Cut()
1154 {
1155     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1156
1157 #ifndef __WXGTK20__
1158     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG );
1159 #endif
1160 }
1161
1162 void wxTextCtrl::Copy()
1163 {
1164     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1165
1166 #ifndef __WXGTK20__
1167     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG );
1168 #endif
1169 }
1170
1171 void wxTextCtrl::Paste()
1172 {
1173     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1174
1175 #ifndef __WXGTK20__
1176     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG );
1177 #endif
1178 }
1179
1180 // Undo/redo
1181 void wxTextCtrl::Undo()
1182 {
1183     // TODO
1184     wxFAIL_MSG( wxT("wxTextCtrl::Undo not implemented") );
1185 }
1186
1187 void wxTextCtrl::Redo()
1188 {
1189     // TODO
1190     wxFAIL_MSG( wxT("wxTextCtrl::Redo not implemented") );
1191 }
1192
1193 bool wxTextCtrl::CanUndo() const
1194 {
1195     // TODO
1196     //wxFAIL_MSG( wxT("wxTextCtrl::CanUndo not implemented") );
1197     return FALSE;
1198 }
1199
1200 bool wxTextCtrl::CanRedo() const
1201 {
1202     // TODO
1203     //wxFAIL_MSG( wxT("wxTextCtrl::CanRedo not implemented") );
1204     return FALSE;
1205 }
1206
1207 // If the return values from and to are the same, there is no
1208 // selection.
1209 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1210 {
1211     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1212
1213     gint from = -1;
1214     gint to = -1;
1215     bool haveSelection = FALSE;
1216
1217 #ifdef __WXGTK20__
1218      if (m_windowStyle & wxTE_MULTILINE)
1219      {
1220          GtkTextBuffer *buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (m_text));
1221          GtkTextIter ifrom, ito;
1222          if ( gtk_text_buffer_get_selection_bounds(buffer, &ifrom, &ito) )
1223          {
1224              haveSelection = TRUE;
1225              from = gtk_text_iter_get_offset(&ifrom);
1226              to = gtk_text_iter_get_offset(&ito);
1227          }
1228      }
1229      else  // not multi-line
1230      {
1231          if ( gtk_editable_get_selection_bounds( GTK_EDITABLE(m_text),
1232                                                  &from, &to) )
1233          {
1234              haveSelection = TRUE;
1235          }
1236      }
1237 #else //  not GTK2
1238      if ( (GTK_EDITABLE(m_text)->has_selection) )
1239      {
1240          haveSelection = TRUE;
1241          from = (long) GTK_EDITABLE(m_text)->selection_start_pos;
1242          to = (long) GTK_EDITABLE(m_text)->selection_end_pos;
1243      }
1244 #endif
1245
1246      if (! haveSelection )
1247           from = to = GetInsertionPoint();
1248
1249      if ( from > to )
1250      {
1251          // exchange them to be compatible with wxMSW
1252          gint tmp = from;
1253          from = to;
1254          to = tmp;
1255      }
1256
1257     if ( fromOut )
1258         *fromOut = from;
1259     if ( toOut )
1260         *toOut = to;
1261 }
1262
1263
1264 bool wxTextCtrl::IsEditable() const
1265 {
1266     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1267
1268 #ifdef __WXGTK20__
1269     if (m_windowStyle & wxTE_MULTILINE)
1270     {
1271         return gtk_text_view_get_editable(GTK_TEXT_VIEW(m_text));
1272     }
1273     else
1274     {
1275         return gtk_editable_get_editable(GTK_EDITABLE(m_text));
1276     }
1277 #else
1278     return GTK_EDITABLE(m_text)->editable;
1279 #endif
1280 }
1281
1282 bool wxTextCtrl::IsModified() const
1283 {
1284     return m_modified;
1285 }
1286
1287 void wxTextCtrl::Clear()
1288 {
1289     SetValue( wxT("") );
1290 }
1291
1292 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1293 {
1294     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1295
1296     if ((key_event.GetKeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
1297     {
1298         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1299         event.SetEventObject(this);
1300         event.SetString(GetValue());
1301         if (GetEventHandler()->ProcessEvent(event)) return;
1302     }
1303
1304     if ((key_event.GetKeyCode() == WXK_RETURN) && !(m_windowStyle & wxTE_MULTILINE))
1305     {
1306         // This will invoke the dialog default action, such
1307         // as the clicking the default button.
1308
1309         wxWindow *top_frame = m_parent;
1310         while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
1311             top_frame = top_frame->GetParent();
1312
1313         if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
1314         {
1315             GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
1316
1317             if (window->default_widget)
1318             {
1319                 gtk_widget_activate (window->default_widget);
1320                 return;
1321             }
1322         }
1323     }
1324
1325     key_event.Skip();
1326 }
1327
1328 GtkWidget* wxTextCtrl::GetConnectWidget()
1329 {
1330     return GTK_WIDGET(m_text);
1331 }
1332
1333 bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
1334 {
1335     if (m_windowStyle & wxTE_MULTILINE)
1336     {
1337 #ifdef __WXGTK20__
1338         return window == gtk_text_view_get_window( GTK_TEXT_VIEW( m_text ), GTK_TEXT_WINDOW_TEXT );  // pure guesswork
1339 #else
1340         return (window == GTK_TEXT(m_text)->text_area);
1341 #endif
1342     }
1343     else
1344     {
1345         return (window == GTK_ENTRY(m_text)->text_area);
1346     }
1347 }
1348
1349 // the font will change for subsequent text insertiongs
1350 bool wxTextCtrl::SetFont( const wxFont &font )
1351 {
1352     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1353
1354     if ( !wxTextCtrlBase::SetFont(font) )
1355     {
1356         // font didn't change, nothing to do
1357         return FALSE;
1358     }
1359
1360     if ( m_windowStyle & wxTE_MULTILINE )
1361     {
1362         m_updateFont = TRUE;
1363
1364         m_defaultStyle.SetFont(font);
1365
1366         ChangeFontGlobally();
1367     }
1368
1369     return TRUE;
1370 }
1371
1372 void wxTextCtrl::ChangeFontGlobally()
1373 {
1374     // this method is very inefficient and hence should be called as rarely as
1375     // possible!
1376     wxASSERT_MSG( (m_windowStyle & wxTE_MULTILINE) && m_updateFont,
1377                   _T("shouldn't be called for single line controls") );
1378
1379     wxString value = GetValue();
1380     if ( !value.IsEmpty() )
1381     {
1382         m_updateFont = FALSE;
1383
1384         Clear();
1385         AppendText(value);
1386     }
1387 }
1388
1389 void wxTextCtrl::UpdateFontIfNeeded()
1390 {
1391     if ( m_updateFont )
1392         ChangeFontGlobally();
1393 }
1394
1395 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1396 {
1397     if ( !wxControl::SetForegroundColour(colour) )
1398         return FALSE;
1399
1400     // update default fg colour too
1401     m_defaultStyle.SetTextColour(colour);
1402
1403     return TRUE;
1404 }
1405
1406 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1407 {
1408     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1409
1410     if ( !wxControl::SetBackgroundColour( colour ) )
1411         return FALSE;
1412
1413     if (!m_widget->window)
1414         return FALSE;
1415
1416     wxColour sysbg = wxSystemSettings::GetColour( wxSYS_COLOUR_BTNFACE );
1417     if (sysbg.Red() == colour.Red() &&
1418         sysbg.Green() == colour.Green() &&
1419         sysbg.Blue() == colour.Blue())
1420     {
1421         return FALSE; // FIXME or TRUE?
1422     }
1423
1424     if (!m_backgroundColour.Ok())
1425         return FALSE;
1426
1427     if (m_windowStyle & wxTE_MULTILINE)
1428     {
1429 #ifndef __WXGTK20__
1430         GdkWindow *window = GTK_TEXT(m_text)->text_area;
1431         if (!window)
1432             return FALSE;
1433         m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
1434         gdk_window_set_background( window, m_backgroundColour.GetColor() );
1435         gdk_window_clear( window );
1436 #endif
1437     }
1438
1439     // change active background color too
1440     m_defaultStyle.SetBackgroundColour( colour );
1441
1442     return TRUE;
1443 }
1444
1445 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
1446 {
1447     if ( m_windowStyle & wxTE_MULTILINE )
1448     {
1449         if ( style.IsDefault() )
1450         {
1451             // nothing to do
1452             return TRUE;
1453         }
1454 #ifdef __WXGTK20__
1455         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
1456         gint l = gtk_text_buffer_get_char_count( text_buffer );
1457
1458         wxCHECK_MSG( start >= 0 && end <= l, FALSE,
1459                      _T("invalid range in wxTextCtrl::SetStyle") );
1460
1461         GtkTextIter starti, endi;
1462         gtk_text_buffer_get_iter_at_offset( text_buffer, &starti, start );
1463         gtk_text_buffer_get_iter_at_offset( text_buffer, &endi, end );
1464
1465         // use the attributes from style which are set in it and fall back
1466         // first to the default style and then to the text control default
1467         // colours for the others
1468         wxTextAttr attr = wxTextAttr::Combine(style, m_defaultStyle, this);
1469
1470         PangoFontDescription *font_description = attr.HasFont()
1471                              ? attr.GetFont().GetNativeFontInfo()->description
1472                              : NULL;
1473
1474         GdkColor *colFg = attr.HasTextColour() ? attr.GetTextColour().GetColor()
1475                                                : NULL;
1476
1477         GdkColor *colBg = attr.HasBackgroundColour()
1478                             ? attr.GetBackgroundColour().GetColor()
1479                             : NULL;
1480
1481         GtkTextTag *tag;
1482         tag = gtk_text_buffer_create_tag( text_buffer, NULL, "font-desc", font_description,
1483                                          "foreground-gdk", colFg,
1484                                          "background-gdk", colBg, NULL );
1485         gtk_text_buffer_apply_tag( text_buffer, tag, &starti, &endi );
1486
1487          return TRUE;
1488 #else
1489         // VERY dirty way to do that - removes the required text and re-adds it
1490         // with styling (FIXME)
1491
1492         gint l = gtk_text_get_length( GTK_TEXT(m_text) );
1493
1494         wxCHECK_MSG( start >= 0 && end <= l, FALSE,
1495                      _T("invalid range in wxTextCtrl::SetStyle") );
1496
1497         gint old_pos = gtk_editable_get_position( GTK_EDITABLE(m_text) );
1498         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), start, end );
1499         wxString tmp(text,*wxConvCurrent);
1500         g_free( text );
1501
1502         gtk_editable_delete_text( GTK_EDITABLE(m_text), start, end );
1503         gtk_editable_set_position( GTK_EDITABLE(m_text), start );
1504
1505 #if wxUSE_UNICODE
1506         wxWX2MBbuf buf = tmp.mbc_str();
1507         const char *txt = buf;
1508         size_t txtlen = strlen(buf);
1509 #else
1510         const char *txt = tmp;
1511         size_t txtlen = tmp.length();
1512 #endif
1513
1514         // use the attributes from style which are set in it and fall back
1515         // first to the default style and then to the text control default
1516         // colours for the others
1517         wxGtkTextInsert(m_text,
1518                         wxTextAttr::Combine(style, m_defaultStyle, this),
1519                         txt,
1520                         txtlen);
1521
1522         /* does not seem to help under GTK+ 1.2 !!!
1523         gtk_editable_set_position( GTK_EDITABLE(m_text), old_pos ); */
1524         SetInsertionPoint( old_pos );
1525 #endif
1526         return TRUE;
1527     }
1528     else // singe line
1529     {
1530         // cannot do this for GTK+'s Entry widget
1531         return FALSE;
1532     }
1533 }
1534
1535 void wxTextCtrl::ApplyWidgetStyle()
1536 {
1537     if (m_windowStyle & wxTE_MULTILINE)
1538     {
1539         // how ?
1540     }
1541     else
1542     {
1543         SetWidgetStyle();
1544         gtk_widget_set_style( m_text, m_widgetStyle );
1545     }
1546 }
1547
1548 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1549 {
1550     Cut();
1551 }
1552
1553 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1554 {
1555     Copy();
1556 }
1557
1558 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1559 {
1560     Paste();
1561 }
1562
1563 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1564 {
1565     Undo();
1566 }
1567
1568 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1569 {
1570     Redo();
1571 }
1572
1573 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1574 {
1575     event.Enable( CanCut() );
1576 }
1577
1578 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1579 {
1580     event.Enable( CanCopy() );
1581 }
1582
1583 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1584 {
1585     event.Enable( CanPaste() );
1586 }
1587
1588 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1589 {
1590     event.Enable( CanUndo() );
1591 }
1592
1593 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1594 {
1595     event.Enable( CanRedo() );
1596 }
1597
1598 void wxTextCtrl::OnInternalIdle()
1599 {
1600     wxCursor cursor = m_cursor;
1601     if (g_globalCursor.Ok()) cursor = g_globalCursor;
1602
1603     if (cursor.Ok())
1604     {
1605 #ifndef __WXGTK20__
1606         GdkWindow *window = (GdkWindow*) NULL;
1607         if (HasFlag(wxTE_MULTILINE))
1608             window = GTK_TEXT(m_text)->text_area;
1609         else
1610             window = GTK_ENTRY(m_text)->text_area;
1611
1612         if (window)
1613             gdk_window_set_cursor( window, cursor.GetCursor() );
1614
1615         if (!g_globalCursor.Ok())
1616             cursor = *wxSTANDARD_CURSOR;
1617
1618         window = m_widget->window;
1619         if ((window) && !(GTK_WIDGET_NO_WINDOW(m_widget)))
1620             gdk_window_set_cursor( window, cursor.GetCursor() );
1621 #endif
1622     }
1623
1624     if (g_delayedFocus == this)
1625     {
1626         if (GTK_WIDGET_REALIZED(m_widget))
1627         {
1628             gtk_widget_grab_focus( m_widget );
1629             g_delayedFocus = NULL;
1630         }
1631     }
1632
1633     if (wxUpdateUIEvent::CanUpdate(this))
1634         UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
1635 }
1636
1637 wxSize wxTextCtrl::DoGetBestSize() const
1638 {
1639     // FIXME should be different for multi-line controls...
1640     wxSize ret( wxControl::DoGetBestSize() );
1641     return wxSize(80, ret.y);
1642 }
1643
1644 // ----------------------------------------------------------------------------
1645 // freeze/thaw
1646 // ----------------------------------------------------------------------------
1647
1648 void wxTextCtrl::Freeze()
1649 {
1650 #ifndef __WXGTK20__
1651     if ( HasFlag(wxTE_MULTILINE) )
1652     {
1653         gtk_text_freeze(GTK_TEXT(m_text));
1654     }
1655 #endif
1656 }
1657
1658 void wxTextCtrl::Thaw()
1659 {
1660 #ifndef __WXGTK20__
1661     if ( HasFlag(wxTE_MULTILINE) )
1662     {
1663         GTK_TEXT(m_text)->vadj->value = 0.0;
1664
1665         gtk_text_thaw(GTK_TEXT(m_text));
1666     }
1667 #endif
1668 }
1669
1670 // ----------------------------------------------------------------------------
1671 // scrolling
1672 // ----------------------------------------------------------------------------
1673
1674 GtkAdjustment *wxTextCtrl::GetVAdj() const
1675 {
1676 #ifdef __WXGTK20__
1677     return NULL;
1678 #else
1679     return HasFlag(wxTE_MULTILINE) ? GTK_TEXT(m_text)->vadj : NULL;
1680 #endif
1681 }
1682
1683 bool wxTextCtrl::DoScroll(GtkAdjustment *adj, int diff)
1684 {
1685 #ifndef __WXGTK20__
1686     float value = adj->value + diff;
1687
1688     if ( value < 0 )
1689         value = 0;
1690
1691     float upper = adj->upper - adj->page_size;
1692     if ( value > upper )
1693         value = upper;
1694
1695     // did we noticeably change the scroll position?
1696     if ( fabs(adj->value - value) < 0.2 )
1697     {
1698         // well, this is what Robert does in wxScrollBar, so it must be good...
1699         return FALSE;
1700     }
1701
1702     adj->value = value;
1703
1704     gtk_signal_emit_by_name(GTK_OBJECT(adj), "value_changed");
1705
1706 #endif
1707     return TRUE;
1708 }
1709
1710 bool wxTextCtrl::ScrollLines(int lines)
1711 {
1712 #ifdef __WXGTK20__
1713     return FALSE;
1714 #else
1715     GtkAdjustment *adj = GetVAdj();
1716     if ( !adj )
1717         return FALSE;
1718
1719     // this is hardcoded to 10 in GTK+ 1.2 (great idea)
1720     static const int KEY_SCROLL_PIXELS = 10;
1721
1722     return DoScroll(adj, lines*KEY_SCROLL_PIXELS);
1723 #endif
1724 }
1725
1726 bool wxTextCtrl::ScrollPages(int pages)
1727 {
1728 #ifdef __WXGTK20__
1729     return FALSE;
1730 #else
1731     GtkAdjustment *adj = GetVAdj();
1732     if ( !adj )
1733         return FALSE;
1734
1735     return DoScroll(adj, (int)ceil(pages*adj->page_increment));
1736 #endif
1737 }
1738