src/gtk/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        textctrl.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling, Vadim Zeitlin
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #ifdef __GNUG__
  11 #pragma implementation "textctrl.h"
  12 #endif
  13
  14 #include "wx/textctrl.h"
  15 #include "wx/utils.h"
  16 #include "wx/intl.h"
  17 #include "wx/settings.h"
  18
  19 #include <sys/types.h>
  20 #include <sys/stat.h>
  21 #include <ctype.h>
  22
  23 #include "gdk/gdk.h"
  24 #include "gtk/gtk.h"
  25 #include "gdk/gdkkeysyms.h"
  26
  27 //-----------------------------------------------------------------------------
  28 // idle system
  29 //-----------------------------------------------------------------------------
  30
  31 extern void wxapp_install_idle_handler();
  32 extern bool g_isIdle;
  33
  34 //-----------------------------------------------------------------------------
  35 // data
  36 //-----------------------------------------------------------------------------
  37
  38 extern bool       g_blockEventsOnDrag;
  39 extern wxCursor   g_globalCursor;
  40
  41 //-----------------------------------------------------------------------------
  42 //  "changed"
  43 //-----------------------------------------------------------------------------
  44
  45 static void
  46 gtk_text_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
  47 {
  48     if (!win->m_hasVMT) return;
  49
  50     if (g_isIdle)
  51         wxapp_install_idle_handler();
  52
  53     win->SetModified();
  54
  55     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->GetId() );
  56     event.SetString( win->GetValue() );
  57     event.SetEventObject( win );
  58     win->GetEventHandler()->ProcessEvent( event );
  59 }
  60
  61 //-----------------------------------------------------------------------------
  62 // "changed" from vertical scrollbar
  63 //-----------------------------------------------------------------------------
  64
  65 static void
  66 gtk_scrollbar_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
  67 {
  68     if (!win->m_hasVMT) return;
  69
  70     if (g_isIdle)
  71         wxapp_install_idle_handler();
  72
  73     win->CalculateScrollbar();
  74 }
  75
  76 //-----------------------------------------------------------------------------
  77 //  wxTextCtrl
  78 //-----------------------------------------------------------------------------
  79
  80 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl,wxControl)
  81
  82 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
  83     EVT_CHAR(wxTextCtrl::OnChar)
  84
  85     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
  86     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
  87     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
  88     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
  89     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
  90
  91     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
  92     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
  93     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
  94     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
  95     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
  96 END_EVENT_TABLE()
  97
  98 wxTextCtrl::wxTextCtrl()
  99 {
 100     m_modified = FALSE;
 101 }
 102
 103 wxTextCtrl::wxTextCtrl( wxWindow *parent,
 104                         wxWindowID id,
 105                         const wxString &value,
 106                         const wxPoint &pos,
 107                         const wxSize &size,
 108                         long style,
 109                         const wxValidator& validator,
 110                         const wxString &name )
 111 {
 112     m_modified = FALSE;
 113     Create( parent, id, value, pos, size, style, validator, name );
 114 }
 115
 116 bool wxTextCtrl::Create( wxWindow *parent,
 117                          wxWindowID id,
 118                          const wxString &value,
 119                          const wxPoint &pos,
 120                          const wxSize &size,
 121                          long style,
 122                          const wxValidator& validator,
 123                          const wxString &name )
 124 {
 125     m_needParent = TRUE;
 126     m_acceptsFocus = TRUE;
 127
 128     if (!PreCreation( parent, pos, size ) ||
 129         !CreateBase( parent, id, pos, size, style, validator, name ))
 130     {
 131         wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
 132         return FALSE;
 133     }
 134
 135
 136     m_vScrollbarVisible = FALSE;
 137
 138     bool multi_line = (style & wxTE_MULTILINE) != 0;
 139     if (multi_line)
 140     {
 141 #if (GTK_MINOR_VERSION > 2)
 142         /* a multi-line edit control: create a vertical scrollbar by default and
 143            horizontal if requested */
 144         bool bHasHScrollbar = (style & wxHSCROLL) != 0;
 145 #else
 146         bool bHasHScrollbar = FALSE;
 147 #endif
 148
 149         /* create our control ... */
 150         m_text = gtk_text_new( (GtkAdjustment *) NULL, (GtkAdjustment *) NULL );
 151
 152         /* ... and put into the upper left hand corner of the table */
 153         m_widget = gtk_table_new(bHasHScrollbar ? 2 : 1, 2, FALSE);
 154         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 155         gtk_table_attach( GTK_TABLE(m_widget), m_text, 0, 1, 0, 1,
 156                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 157                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 158                        0, 0);
 159
 160         /* always wrap words */
 161         gtk_text_set_word_wrap( GTK_TEXT(m_text), TRUE );
 162
 163 #if (GTK_MINOR_VERSION > 2)
 164         /* put the horizontal scrollbar in the lower left hand corner */
 165         if (bHasHScrollbar)
 166         {
 167             GtkWidget *hscrollbar = gtk_hscrollbar_new(GTK_TEXT(m_text)->hadj);
 168             GTK_WIDGET_UNSET_FLAGS( hscrollbar, GTK_CAN_FOCUS );
 169             gtk_table_attach(GTK_TABLE(m_widget), hscrollbar, 0, 1, 1, 2,
 170                        (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
 171                        GTK_FILL,
 172                        0, 0);
 173             gtk_widget_show(hscrollbar);
 174
 175             /* don't wrap lines, otherwise we wouldn't need the scrollbar */
 176             gtk_text_set_line_wrap( GTK_TEXT(m_text), FALSE );
 177         }
 178 #endif
 179
 180         /* finally, put the vertical scrollbar in the upper right corner */
 181         m_vScrollbar = gtk_vscrollbar_new( GTK_TEXT(m_text)->vadj );
 182         GTK_WIDGET_UNSET_FLAGS( m_vScrollbar, GTK_CAN_FOCUS );
 183         gtk_table_attach(GTK_TABLE(m_widget), m_vScrollbar, 1, 2, 0, 1,
 184                      GTK_FILL,
 185                      (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
 186                      0, 0);
 187     }
 188     else
 189     {
 190         /* a single-line text control: no need for scrollbars */
 191         m_widget =
 192           m_text = gtk_entry_new();
 193     }
 194
 195     m_parent->DoAddChild( this );
 196
 197     PostCreation();
 198
 199     SetFont( parent->GetFont() );
 200
 201     wxSize size_best( DoGetBestSize() );
 202     wxSize new_size( size );
 203     if (new_size.x == -1)
 204         new_size.x = size_best.x;
 205     if (new_size.y == -1)
 206         new_size.y = size_best.y;
 207     if ((new_size.x != size.x) || (new_size.y != size.y))
 208         SetSize( new_size.x, new_size.y );
 209
 210     if (multi_line)
 211         gtk_widget_show(m_text);
 212
 213     /* we want to be notified about text changes */
 214     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 215       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 216
 217     if (multi_line)
 218     {
 219         gtk_signal_connect(GTK_OBJECT(GTK_TEXT(m_text)->vadj), "changed",
 220           (GtkSignalFunc) gtk_scrollbar_changed_callback, (gpointer) this );
 221     }
 222
 223     if (!value.IsEmpty())
 224     {
 225         gint tmp = 0;
 226
 227 #if GTK_MINOR_VERSION == 0
 228         // if we don't realize it, GTK 1.0.6 dies with a SIGSEGV in
 229         // gtk_editable_insert_text()
 230         gtk_widget_realize(m_text);
 231 #endif // GTK 1.0
 232
 233 #if wxUSE_UNICODE
 234         wxWX2MBbuf val = value.mbc_str();
 235         gtk_editable_insert_text( GTK_EDITABLE(m_text), val, strlen(val), &tmp );
 236 #else // !Unicode
 237         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &tmp );
 238 #endif // Unicode/!Unicode
 239
 240         if (multi_line)
 241         {
 242             /* bring editable's cursor uptodate. bug in GTK. */
 243
 244             GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 245         }
 246     }
 247
 248     if (style & wxTE_PASSWORD)
 249     {
 250         if (!multi_line)
 251             gtk_entry_set_visibility( GTK_ENTRY(m_text), FALSE );
 252     }
 253
 254     if (style & wxTE_READONLY)
 255     {
 256         if (!multi_line)
 257             gtk_entry_set_editable( GTK_ENTRY(m_text), FALSE );
 258     }
 259     else
 260     {
 261         if (multi_line)
 262             gtk_text_set_editable( GTK_TEXT(m_text), 1 );
 263     }
 264
 265     SetBackgroundColour( wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW) );
 266     SetForegroundColour( parent->GetForegroundColour() );
 267
 268     m_cursor = wxCursor( wxCURSOR_IBEAM );
 269
 270     Show( TRUE );
 271
 272     return TRUE;
 273 }
 274
 275 void wxTextCtrl::CalculateScrollbar()
 276 {
 277     if ((m_windowStyle & wxTE_MULTILINE) == 0) return;
 278
 279     GtkAdjustment *adj = GTK_TEXT(m_text)->vadj;
 280
 281     if (adj->upper - adj->page_size < 0.8)
 282     {
 283         if (m_vScrollbarVisible)
 284         {
 285             gtk_widget_hide( m_vScrollbar );
 286             m_vScrollbarVisible = FALSE;
 287         }
 288     }
 289     else
 290     {
 291         if (!m_vScrollbarVisible)
 292         {
 293             gtk_widget_show( m_vScrollbar );
 294             m_vScrollbarVisible = TRUE;
 295         }
 296     }
 297 }
 298
 299 wxString wxTextCtrl::GetValue() const
 300 {
 301     wxCHECK_MSG( m_text != NULL, wxT(""), wxT("invalid text ctrl") );
 302
 303     wxString tmp;
 304     if (m_windowStyle & wxTE_MULTILINE)
 305     {
 306         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 307         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 308         tmp = wxString(text,*wxConvCurrent);
 309         g_free( text );
 310     }
 311     else
 312     {
 313         tmp = wxString(gtk_entry_get_text( GTK_ENTRY(m_text) ),*wxConvCurrent);
 314     }
 315     return tmp;
 316 }
 317
 318 void wxTextCtrl::SetValue( const wxString &value )
 319 {
 320     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 321
 322     wxString tmp = wxT("");
 323     if (!value.IsNull()) tmp = value;
 324     if (m_windowStyle & wxTE_MULTILINE)
 325     {
 326         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 327         gtk_editable_delete_text( GTK_EDITABLE(m_text), 0, len );
 328         len = 0;
 329 #if wxUSE_UNICODE
 330         wxWX2MBbuf tmpbuf = tmp.mbc_str();
 331         gtk_editable_insert_text( GTK_EDITABLE(m_text), tmpbuf, strlen(tmpbuf), &len );
 332 #else
 333         gtk_editable_insert_text( GTK_EDITABLE(m_text), tmp.mbc_str(), tmp.Length(), &len );
 334 #endif
 335     }
 336     else
 337     {
 338         gtk_entry_set_text( GTK_ENTRY(m_text), tmp.mbc_str() );
 339     }
 340 }
 341
 342 void wxTextCtrl::WriteText( const wxString &text )
 343 {
 344     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 345
 346     if (text.IsEmpty()) return;
 347
 348     if (m_windowStyle & wxTE_MULTILINE)
 349     {
 350         /* this moves the cursor pos to behind the inserted text */
 351         gint len = GTK_EDITABLE(m_text)->current_pos;
 352
 353 #if wxUSE_UNICODE
 354         wxWX2MBbuf buf = text.mbc_str();
 355         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &len );
 356 #else
 357         gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
 358 #endif
 359
 360         /* bring editable's cursor uptodate. bug in GTK. */
 361         GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 362     }
 363     else
 364     {
 365         /* this moves the cursor pos to behind the inserted text */
 366         gint len = GTK_EDITABLE(m_text)->current_pos;
 367 #if wxUSE_UNICODE
 368         wxWX2MBbuf buf = text.mbc_str();
 369         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &len );
 370 #else
 371         gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
 372 #endif
 373
 374         /* bring editable's cursor uptodate. bug in GTK. */
 375         GTK_EDITABLE(m_text)->current_pos += text.Len();
 376
 377         /* bring entry's cursor uptodate. bug in GTK. */
 378         gtk_entry_set_position( GTK_ENTRY(m_text), GTK_EDITABLE(m_text)->current_pos );
 379     }
 380 }
 381
 382 void wxTextCtrl::AppendText( const wxString &text )
 383 {
 384     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 385
 386     if (text.IsEmpty()) return;
 387
 388     if (m_windowStyle & wxTE_MULTILINE)
 389     {
 390         bool hasSpecialAttributes = m_font.Ok() ||
 391                                     m_foregroundColour.Ok() ||
 392                                     m_backgroundColour.Ok();
 393         if ( hasSpecialAttributes )
 394         {
 395              gtk_text_insert( GTK_TEXT(m_text),
 396                               m_font.GetInternalFont(),
 397                               m_foregroundColour.GetColor(),
 398                               m_backgroundColour.GetColor(),
 399                               text.mbc_str(), text.length());
 400
 401         }
 402         else
 403         {
 404             /* we'll insert at the last position */
 405             gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 406 #if wxUSE_UNICODE
 407             wxWX2MBbuf buf = text.mbc_str();
 408             gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &len );
 409 #else
 410             gtk_editable_insert_text( GTK_EDITABLE(m_text), text, text.Length(), &len );
 411 #endif
 412         }
 413
 414         /* bring editable's cursor uptodate. bug in GTK. */
 415         GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 416     }
 417     else
 418     {
 419         gtk_entry_append_text( GTK_ENTRY(m_text), text.mbc_str() );
 420     }
 421 }
 422
 423 wxString wxTextCtrl::GetLineText( long lineNo ) const
 424 {
 425   if (m_windowStyle & wxTE_MULTILINE)
 426   {
 427     gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 428     char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 429
 430     if (text)
 431     {
 432         wxString buf(wxT(""));
 433         long i;
 434         int currentLine = 0;
 435         for (i = 0; currentLine != lineNo && text[i]; i++ )
 436           if (text[i] == '\n')
 437             currentLine++;
 438         // Now get the text
 439         int j;
 440         for (j = 0; text[i] && text[i] != '\n'; i++, j++ )
 441             buf += text[i];
 442
 443         g_free( text );
 444         return buf;
 445     }
 446     else
 447       return wxEmptyString;
 448   }
 449   else
 450   {
 451     if (lineNo == 0) return GetValue();
 452     return wxEmptyString;
 453   }
 454 }
 455
 456 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 457 {
 458   /* If you implement this, don't forget to update the documentation!
 459    * (file docs/latex/wx/text.tex) */
 460     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
 461 }
 462
 463 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
 464 {
 465     if ( m_windowStyle & wxTE_MULTILINE )
 466     {
 467         wxString text = GetValue();
 468
 469         // cast to prevent warning. But pos really should've been unsigned.
 470         if( (unsigned long)pos > text.Len()  )
 471             return FALSE;
 472
 473         *x=0;   // First Col
 474         *y=0;   // First Line
 475
 476         const wxChar* stop = text.c_str() + pos;
 477         for ( const wxChar *p = text.c_str(); p < stop; p++ )
 478         {
 479             if (*p == wxT('\n'))
 480             {
 481                 (*y)++;
 482                 *x=0;
 483             }
 484             else
 485                 (*x)++;
 486         }
 487     }
 488     else // single line control
 489     {
 490         if ( pos <= GTK_ENTRY(m_text)->text_length )
 491         {
 492             *y = 0;
 493             *x = pos;
 494         }
 495         else
 496         {
 497             // index out of bounds
 498             return FALSE;
 499         }
 500     }
 501
 502     return TRUE;
 503 }
 504
 505 long wxTextCtrl::XYToPosition(long x, long y ) const
 506 {
 507     if (!(m_windowStyle & wxTE_MULTILINE)) return 0;
 508
 509     long pos=0;
 510     for( int i=0; i<y; i++ ) pos += GetLineLength(i) + 1; // one for '\n'
 511
 512     pos += x;
 513     return pos;
 514 }
 515
 516 int wxTextCtrl::GetLineLength(long lineNo) const
 517 {
 518     wxString str = GetLineText (lineNo);
 519     return (int) str.Length();
 520 }
 521
 522 int wxTextCtrl::GetNumberOfLines() const
 523 {
 524     if (m_windowStyle & wxTE_MULTILINE)
 525     {
 526         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 527         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 528
 529         if (text)
 530         {
 531             int currentLine = 0;
 532             for (int i = 0; i < len; i++ )
 533             {
 534                 if (text[i] == '\n')
 535                     currentLine++;
 536             }
 537             g_free( text );
 538
 539             // currentLine is 0 based, add 1 to get number of lines
 540             return currentLine + 1;
 541         }
 542         else
 543         {
 544             return 0;
 545         }
 546     }
 547     else
 548     {
 549         return 1;
 550     }
 551 }
 552
 553 void wxTextCtrl::SetInsertionPoint( long pos )
 554 {
 555     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 556
 557     if (m_windowStyle & wxTE_MULTILINE)
 558     {
 559         /* seems to be broken in GTK 1.0.X:
 560            gtk_text_set_point( GTK_TEXT(m_text), (int)pos ); */
 561
 562         gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 563           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 564
 565         /* we fake a set_point by inserting and deleting. as the user
 566            isn't supposed to get to know about thos non-sense, we
 567            disconnect so that no events are sent to the user program. */
 568
 569         gint tmp = (gint)pos;
 570         gtk_editable_insert_text( GTK_EDITABLE(m_text), " ", 1, &tmp );
 571         gtk_editable_delete_text( GTK_EDITABLE(m_text), tmp-1, tmp );
 572
 573         gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 574           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 575
 576         /* bring editable's cursor uptodate. another bug in GTK. */
 577
 578         GTK_EDITABLE(m_text)->current_pos = gtk_text_get_point( GTK_TEXT(m_text) );
 579     }
 580     else
 581     {
 582         gtk_entry_set_position( GTK_ENTRY(m_text), (int)pos );
 583
 584         /* bring editable's cursor uptodate. bug in GTK. */
 585
 586         GTK_EDITABLE(m_text)->current_pos = (guint32)pos;
 587     }
 588 }
 589
 590 void wxTextCtrl::SetInsertionPointEnd()
 591 {
 592     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 593
 594     if (m_windowStyle & wxTE_MULTILINE)
 595         SetInsertionPoint(gtk_text_get_length(GTK_TEXT(m_text)));
 596     else
 597         gtk_entry_set_position( GTK_ENTRY(m_text), -1 );
 598 }
 599
 600 void wxTextCtrl::SetEditable( bool editable )
 601 {
 602     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 603
 604     if (m_windowStyle & wxTE_MULTILINE)
 605         gtk_text_set_editable( GTK_TEXT(m_text), editable );
 606     else
 607         gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
 608 }
 609
 610 void wxTextCtrl::DiscardEdits()
 611 {
 612     m_modified = FALSE;
 613 }
 614
 615 void wxTextCtrl::SetSelection( long from, long to )
 616 {
 617     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 618
 619     gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 620 }
 621
 622 void wxTextCtrl::ShowPosition( long WXUNUSED(pos) )
 623 {
 624 //    SetInsertionPoint( pos );
 625 }
 626
 627 long wxTextCtrl::GetInsertionPoint() const
 628 {
 629     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
 630
 631     return (long) GTK_EDITABLE(m_text)->current_pos;
 632 }
 633
 634 long wxTextCtrl::GetLastPosition() const
 635 {
 636     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
 637
 638     int pos = 0;
 639     if (m_windowStyle & wxTE_MULTILINE)
 640         pos = gtk_text_get_length( GTK_TEXT(m_text) );
 641     else
 642         pos = GTK_ENTRY(m_text)->text_length;
 643
 644     return (long)pos;
 645 }
 646
 647 void wxTextCtrl::Remove( long from, long to )
 648 {
 649     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 650
 651     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 652 }
 653
 654 void wxTextCtrl::Replace( long from, long to, const wxString &value )
 655 {
 656     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 657
 658     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 659
 660     if (!value.IsEmpty())
 661     {
 662         gint pos = (gint)from;
 663 #if wxUSE_UNICODE
 664         wxWX2MBbuf buf = value.mbc_str();
 665         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &pos );
 666 #else
 667         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &pos );
 668 #endif
 669     }
 670 }
 671
 672 void wxTextCtrl::Cut()
 673 {
 674     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 675
 676 #if (GTK_MINOR_VERSION > 0)
 677     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text) );
 678 #else
 679     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text), 0 );
 680 #endif
 681 }
 682
 683 void wxTextCtrl::Copy()
 684 {
 685     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 686
 687 #if (GTK_MINOR_VERSION > 0)
 688     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text) );
 689 #else
 690     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text), 0 );
 691 #endif
 692 }
 693
 694 void wxTextCtrl::Paste()
 695 {
 696     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 697
 698 #if (GTK_MINOR_VERSION > 0)
 699     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text) );
 700 #else
 701     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text), 0 );
 702 #endif
 703 }
 704
 705 bool wxTextCtrl::CanCopy() const
 706 {
 707     // Can copy if there's a selection
 708     long from, to;
 709     GetSelection(& from, & to);
 710     return (from != to) ;
 711 }
 712
 713 bool wxTextCtrl::CanCut() const
 714 {
 715     // Can cut if there's a selection
 716     long from, to;
 717     GetSelection(& from, & to);
 718     return (from != to) ;
 719 }
 720
 721 bool wxTextCtrl::CanPaste() const
 722 {
 723     return IsEditable() ;
 724 }
 725
 726 // Undo/redo
 727 void wxTextCtrl::Undo()
 728 {
 729     // TODO
 730     wxFAIL_MSG( wxT("wxTextCtrl::Undo not implemented") );
 731 }
 732
 733 void wxTextCtrl::Redo()
 734 {
 735     // TODO
 736     wxFAIL_MSG( wxT("wxTextCtrl::Redo not implemented") );
 737 }
 738
 739 bool wxTextCtrl::CanUndo() const
 740 {
 741     // TODO
 742     wxFAIL_MSG( wxT("wxTextCtrl::CanUndo not implemented") );
 743     return FALSE;
 744 }
 745
 746 bool wxTextCtrl::CanRedo() const
 747 {
 748     // TODO
 749     wxFAIL_MSG( wxT("wxTextCtrl::CanRedo not implemented") );
 750     return FALSE;
 751 }
 752
 753 // If the return values from and to are the same, there is no
 754 // selection.
 755 void wxTextCtrl::GetSelection(long* from, long* to) const
 756 {
 757     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 758
 759     if (!(GTK_EDITABLE(m_text)->has_selection))
 760     {
 761         if (from) *from = 0;
 762         if (to)   *to = 0;
 763         return;
 764     }
 765
 766     if (from) *from = (long) GTK_EDITABLE(m_text)->selection_start_pos;
 767     if (to)   *to = (long) GTK_EDITABLE(m_text)->selection_end_pos;
 768 }
 769
 770 bool wxTextCtrl::IsEditable() const
 771 {
 772     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
 773
 774     return GTK_EDITABLE(m_text)->editable;
 775 }
 776
 777 bool wxTextCtrl::IsModified() const
 778 {
 779     return m_modified;
 780 }
 781
 782 void wxTextCtrl::Clear()
 783 {
 784     SetValue( wxT("") );
 785 }
 786
 787 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
 788 {
 789     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 790
 791     if ((key_event.KeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
 792     {
 793         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
 794         event.SetEventObject(this);
 795         if (GetEventHandler()->ProcessEvent(event)) return;
 796     }
 797
 798     if ((key_event.KeyCode() == WXK_RETURN) && !(m_windowStyle & wxTE_MULTILINE))
 799     {
 800         wxWindow *top_frame = m_parent;
 801         while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
 802             top_frame = top_frame->GetParent();
 803         GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
 804
 805         if (window->default_widget)
 806         {
 807             gtk_widget_activate (window->default_widget);
 808             return;
 809         }
 810     }
 811
 812     key_event.Skip();
 813 }
 814
 815 GtkWidget* wxTextCtrl::GetConnectWidget()
 816 {
 817     return GTK_WIDGET(m_text);
 818 }
 819
 820 bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
 821 {
 822     if (m_windowStyle & wxTE_MULTILINE)
 823         return (window == GTK_TEXT(m_text)->text_area);
 824     else
 825         return (window == GTK_ENTRY(m_text)->text_area);
 826 }
 827
 828 // the font will change for subsequent text insertiongs
 829 bool wxTextCtrl::SetFont( const wxFont &font )
 830 {
 831     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
 832
 833     if ( !wxWindowBase::SetFont(font) )
 834     {
 835         // font didn't change, nothing to do
 836         return FALSE;
 837     }
 838
 839     if ( m_windowStyle & wxTE_MULTILINE )
 840     {
 841         // for compatibility with other ports: the font is a global controls
 842         // characteristic, so change the font globally
 843         wxString value = GetValue();
 844         if ( !value.IsEmpty() )
 845         {
 846             Clear();
 847
 848             AppendText(value);
 849         }
 850     }
 851
 852     return TRUE;
 853 }
 854
 855 bool wxTextCtrl::SetForegroundColour( const wxColour &WXUNUSED(colour) )
 856 {
 857     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
 858
 859     // doesn't work
 860     return FALSE;
 861 }
 862
 863 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
 864 {
 865     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
 866
 867     wxControl::SetBackgroundColour( colour );
 868
 869     if (!m_widget->window)
 870         return FALSE;
 871
 872     wxColour sysbg = wxSystemSettings::GetSystemColour( wxSYS_COLOUR_BTNFACE );
 873     if (sysbg.Red() == colour.Red() &&
 874         sysbg.Green() == colour.Green() &&
 875         sysbg.Blue() == colour.Blue())
 876     {
 877         return FALSE; // FIXME or TRUE?
 878     }
 879
 880     if (!m_backgroundColour.Ok())
 881         return FALSE;
 882
 883     if (m_windowStyle & wxTE_MULTILINE)
 884     {
 885         GdkWindow *window = GTK_TEXT(m_text)->text_area;
 886         if (!window)
 887             return FALSE;
 888         m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
 889         gdk_window_set_background( window, m_backgroundColour.GetColor() );
 890         gdk_window_clear( window );
 891     }
 892
 893     return TRUE;
 894 }
 895
 896 void wxTextCtrl::ApplyWidgetStyle()
 897 {
 898     if (m_windowStyle & wxTE_MULTILINE)
 899     {
 900         // how ?
 901     }
 902     else
 903     {
 904         SetWidgetStyle();
 905         gtk_widget_set_style( m_text, m_widgetStyle );
 906     }
 907 }
 908
 909 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
 910 {
 911     Cut();
 912 }
 913
 914 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
 915 {
 916     Copy();
 917 }
 918
 919 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
 920 {
 921     Paste();
 922 }
 923
 924 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
 925 {
 926     Undo();
 927 }
 928
 929 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
 930 {
 931     Redo();
 932 }
 933
 934 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
 935 {
 936     event.Enable( CanCut() );
 937 }
 938
 939 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
 940 {
 941     event.Enable( CanCopy() );
 942 }
 943
 944 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
 945 {
 946     event.Enable( CanPaste() );
 947 }
 948
 949 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
 950 {
 951     event.Enable( CanUndo() );
 952 }
 953
 954 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
 955 {
 956     event.Enable( CanRedo() );
 957 }
 958
 959 void wxTextCtrl::OnInternalIdle()
 960 {
 961     wxCursor cursor = m_cursor;
 962     if (g_globalCursor.Ok()) cursor = g_globalCursor;
 963
 964     if (cursor.Ok())
 965     {
 966         GdkWindow *window = (GdkWindow*) NULL;
 967         if (HasFlag(wxTE_MULTILINE))
 968             window = GTK_TEXT(m_text)->text_area;
 969         else
 970             window = GTK_ENTRY(m_text)->text_area;
 971
 972         if (window)
 973             gdk_window_set_cursor( window, cursor.GetCursor() );
 974
 975         if (!g_globalCursor.Ok())
 976             cursor = *wxSTANDARD_CURSOR;
 977
 978         window = m_widget->window;
 979         if ((window) && !(GTK_WIDGET_NO_WINDOW(m_widget)))
 980             gdk_window_set_cursor( window, cursor.GetCursor() );
 981     }
 982
 983     UpdateWindowUI();
 984 }
 985
 986 wxSize wxTextCtrl::DoGetBestSize() const
 987 {
 988     // FIXME should be different for multi-line controls...
 989     wxSize ret( wxControl::DoGetBestSize() );
 990     return wxSize(80, ret.y);
 991 }