src/gtk1/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        textctrl.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling, Vadim Zeitlin
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #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 wxGtkTextApplyTagsFromAttr(GtkTextBuffer *text_buffer,
  55                                        const wxTextAttr& attr,
  56                                        GtkTextIter *start,
  57                                        GtkTextIter *end)
  58 {
  59     static gchar buf[1024];
  60     GtkTextTag *tag;
  61
  62     if (attr.HasFont())
  63     {
  64         char *font_string;
  65         PangoFontDescription *font_description = attr.GetFont().GetNativeFontInfo()->description;
  66         font_string = pango_font_description_to_string(font_description);
  67         g_snprintf(buf, sizeof(buf), "WXFONT %s", font_string);
  68         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
  69                                          buf );
  70         if (!tag)
  71             tag = gtk_text_buffer_create_tag( text_buffer, buf,
  72                                               "font-desc", font_description,
  73                                               NULL );
  74         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
  75         g_free (font_string);
  76     }
  77
  78     if (attr.HasTextColour())
  79     {
  80         GdkColor *colFg = attr.GetTextColour().GetColor();
  81         g_snprintf(buf, sizeof(buf), "WXFORECOLOR %d %d %d",
  82                    colFg->red, colFg->green, colFg->blue);
  83         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
  84                                          buf );
  85         if (!tag)
  86             tag = gtk_text_buffer_create_tag( text_buffer, buf,
  87                                               "foreground-gdk", colFg, NULL );
  88         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
  89     }
  90
  91     if (attr.HasBackgroundColour())
  92     {
  93         GdkColor *colBg = attr.GetBackgroundColour().GetColor();
  94         g_snprintf(buf, sizeof(buf), "WXBACKCOLOR %d %d %d",
  95                    colBg->red, colBg->green, colBg->blue);
  96         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
  97                                          buf );
  98         if (!tag)
  99             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 100                                               "background-gdk", colBg, NULL );
 101         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 102     }
 103 }
 104
 105 static void wxGtkTextInsert(GtkWidget *text,
 106                             GtkTextBuffer *text_buffer,
 107                             const wxTextAttr& attr,
 108                             wxCharBuffer buffer)
 109
 110 {
 111     gint start_offset;
 112     GtkTextIter iter, start;
 113
 114     gtk_text_buffer_get_iter_at_mark( text_buffer, &iter,
 115                                      gtk_text_buffer_get_insert (text_buffer) );
 116     start_offset = gtk_text_iter_get_offset (&iter);
 117     gtk_text_buffer_insert( text_buffer, &iter, buffer, strlen(buffer) );
 118
 119     gtk_text_buffer_get_iter_at_offset (text_buffer, &start, start_offset);
 120
 121     wxGtkTextApplyTagsFromAttr(text_buffer, attr, &start, &iter);
 122 }
 123 #else
 124 static void wxGtkTextInsert(GtkWidget *text,
 125                             const wxTextAttr& attr,
 126                             const char *txt,
 127                             size_t len)
 128 {
 129     GdkFont *font = attr.HasFont() ? attr.GetFont().GetInternalFont()
 130                                    : NULL;
 131
 132     GdkColor *colFg = attr.HasTextColour() ? attr.GetTextColour().GetColor()
 133                                            : NULL;
 134
 135     GdkColor *colBg = attr.HasBackgroundColour()
 136                         ? attr.GetBackgroundColour().GetColor()
 137                         : NULL;
 138
 139     gtk_text_insert( GTK_TEXT(text), font, colFg, colBg, txt, len );
 140 }
 141 #endif // GTK 1.x
 142
 143 // ----------------------------------------------------------------------------
 144 // "insert_text" for GtkEntry
 145 // ----------------------------------------------------------------------------
 146
 147 static void
 148 gtk_insert_text_callback(GtkEditable *editable,
 149                          const gchar *new_text,
 150                          gint new_text_length,
 151                          gint *position,
 152                          wxTextCtrl *win)
 153 {
 154     if (g_isIdle)
 155         wxapp_install_idle_handler();
 156
 157     // we should only be called if we have a max len limit at all
 158     GtkEntry *entry = GTK_ENTRY (editable);
 159
 160     wxCHECK_RET( entry->text_max_length, _T("shouldn't be called") );
 161
 162     // check that we don't overflow the max length limit
 163     //
 164     // FIXME: this doesn't work when we paste a string which is going to be
 165     //        truncated
 166     if ( entry->text_length == entry->text_max_length )
 167     {
 168         // we don't need to run the base class version at all
 169         gtk_signal_emit_stop_by_name(GTK_OBJECT(editable), "insert_text");
 170
 171         // remember that the next changed signal is to be ignored to avoid
 172         // generating a dummy wxEVT_COMMAND_TEXT_UPDATED event
 173         win->IgnoreNextTextUpdate();
 174
 175         // and generate the correct one ourselves
 176         wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, win->GetId());
 177         event.SetEventObject(win);
 178         event.SetString(win->GetValue());
 179         win->GetEventHandler()->ProcessEvent( event );
 180     }
 181 }
 182
 183 //-----------------------------------------------------------------------------
 184 //  "changed"
 185 //-----------------------------------------------------------------------------
 186
 187 static void
 188 gtk_text_changed_callback( GtkWidget *widget, wxTextCtrl *win )
 189 {
 190     if ( win->IgnoreTextUpdate() )
 191         return;
 192
 193     if (!win->m_hasVMT) return;
 194
 195     if (g_isIdle)
 196         wxapp_install_idle_handler();
 197
 198     win->SetModified();
 199 #ifndef __WXGTK20__
 200     win->UpdateFontIfNeeded();
 201 #endif // !__WXGTK20__
 202
 203     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->GetId() );
 204     event.SetEventObject( win );
 205     event.SetString( win->GetValue() );
 206     win->GetEventHandler()->ProcessEvent( event );
 207 }
 208
 209 //-----------------------------------------------------------------------------
 210 // "expose_event" from scrolled window and textview
 211 //-----------------------------------------------------------------------------
 212
 213 #ifdef __WXGTK20__
 214 static gboolean
 215 gtk_text_exposed_callback( GtkWidget *widget, GdkEventExpose *event, wxTextCtrl *win )
 216 {
 217     return TRUE;
 218 }
 219 #endif
 220
 221 //-----------------------------------------------------------------------------
 222 // "changed" from vertical scrollbar
 223 //-----------------------------------------------------------------------------
 224
 225 #ifndef __WXGTK20__
 226 static void
 227 gtk_scrollbar_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
 228 {
 229     if (!win->m_hasVMT) return;
 230
 231     if (g_isIdle)
 232         wxapp_install_idle_handler();
 233
 234     win->CalculateScrollbar();
 235 }
 236 #endif
 237
 238 // ----------------------------------------------------------------------------
 239 // redraw callback for multiline text
 240 // ----------------------------------------------------------------------------
 241
 242 #ifndef __WXGTK20__
 243
 244 // redrawing a GtkText from inside a wxYield() call results in crashes (the
 245 // text sample shows it in its "Add lines" command which shows wxProgressDialog
 246 // which implicitly calls wxYield()) so we override GtkText::draw() and simply
 247 // don't do anything if we're inside wxYield()
 248
 249 extern bool wxIsInsideYield;
 250
 251 extern "C" {
 252     typedef void (*GtkDrawCallback)(GtkWidget *widget, GdkRectangle *rect);
 253 }
 254
 255 static GtkDrawCallback gs_gtk_text_draw = NULL;
 256
 257 extern "C"
 258 void wxgtk_text_draw( GtkWidget *widget, GdkRectangle *rect)
 259 {
 260     if ( !wxIsInsideYield )
 261     {
 262         wxCHECK_RET( gs_gtk_text_draw != wxgtk_text_draw,
 263                      _T("infinite recursion in wxgtk_text_draw aborted") );
 264
 265         gs_gtk_text_draw(widget, rect);
 266     }
 267 }
 268
 269 #endif // __WXGTK20__
 270
 271 //-----------------------------------------------------------------------------
 272 //  wxTextCtrl
 273 //-----------------------------------------------------------------------------
 274
 275 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl,wxControl)
 276
 277 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
 278     EVT_CHAR(wxTextCtrl::OnChar)
 279
 280     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 281     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 282     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 283     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 284     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 285
 286     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 287     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 288     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 289     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 290     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 291 END_EVENT_TABLE()
 292
 293 void wxTextCtrl::Init()
 294 {
 295     m_ignoreNextUpdate =
 296     m_modified = FALSE;
 297     SetUpdateFont(FALSE);
 298     m_text =
 299     m_vScrollbar = (GtkWidget *)NULL;
 300 #ifdef __WXGTK20__
 301     m_frozenness = 0;
 302 #endif
 303 }
 304
 305 wxTextCtrl::wxTextCtrl( wxWindow *parent,
 306                         wxWindowID id,
 307                         const wxString &value,
 308                         const wxPoint &pos,
 309                         const wxSize &size,
 310                         long style,
 311                         const wxValidator& validator,
 312                         const wxString &name )
 313 {
 314     Init();
 315
 316     Create( parent, id, value, pos, size, style, validator, name );
 317 }
 318
 319 bool wxTextCtrl::Create( wxWindow *parent,
 320                          wxWindowID id,
 321                          const wxString &value,
 322                          const wxPoint &pos,
 323                          const wxSize &size,
 324                          long style,
 325                          const wxValidator& validator,
 326                          const wxString &name )
 327 {
 328     m_needParent = TRUE;
 329     m_acceptsFocus = TRUE;
 330
 331     if (!PreCreation( parent, pos, size ) ||
 332         !CreateBase( parent, id, pos, size, style, validator, name ))
 333     {
 334         wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
 335         return FALSE;
 336     }
 337
 338
 339     m_vScrollbarVisible = FALSE;
 340
 341     bool multi_line = (style & wxTE_MULTILINE) != 0;
 342
 343     if (multi_line)
 344     {
 345 #ifdef __WXGTK20__
 346         // Create view
 347         m_text = gtk_text_view_new();
 348
 349         m_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 350
 351         // create scrolled window
 352         m_widget = gtk_scrolled_window_new( NULL, NULL );
 353         gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW( m_widget ),
 354                                         GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC );
 355
 356         // Insert view into scrolled window
 357         gtk_container_add( GTK_CONTAINER(m_widget), m_text );
 358
 359         // Global settings which can be overridden by tags, I guess.
 360         if (HasFlag( wxHSCROLL ) || HasFlag( wxTE_DONTWRAP ))
 361             gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), GTK_WRAP_NONE );
 362         else
 363             gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), GTK_WRAP_WORD );
 364
 365         if (!HasFlag(wxNO_BORDER))
 366             gtk_scrolled_window_set_shadow_type( GTK_SCROLLED_WINDOW(m_widget), GTK_SHADOW_IN );
 367
 368         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 369 #else
 370         // create our control ...
 371         m_text = gtk_text_new( (GtkAdjustment *) NULL, (GtkAdjustment *) NULL );
 372
 373         // ... and put into the upper left hand corner of the table
 374         bool bHasHScrollbar = FALSE;
 375         m_widget = gtk_table_new(bHasHScrollbar ? 2 : 1, 2, FALSE);
 376         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 377         gtk_table_attach( GTK_TABLE(m_widget), m_text, 0, 1, 0, 1,
 378                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 379                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 380                        0, 0);
 381
 382         // always wrap words
 383         gtk_text_set_word_wrap( GTK_TEXT(m_text), TRUE );
 384
 385         // finally, put the vertical scrollbar in the upper right corner
 386         m_vScrollbar = gtk_vscrollbar_new( GTK_TEXT(m_text)->vadj );
 387         GTK_WIDGET_UNSET_FLAGS( m_vScrollbar, GTK_CAN_FOCUS );
 388         gtk_table_attach(GTK_TABLE(m_widget), m_vScrollbar, 1, 2, 0, 1,
 389                      GTK_FILL,
 390                      (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
 391                      0, 0);
 392 #endif
 393     }
 394     else
 395     {
 396         // a single-line text control: no need for scrollbars
 397         m_widget =
 398         m_text = gtk_entry_new();
 399     }
 400
 401     m_parent->DoAddChild( this );
 402
 403     m_focusWidget = m_text;
 404
 405     PostCreation(size);
 406
 407     if (multi_line)
 408         gtk_widget_show(m_text);
 409
 410 #ifndef __WXGTK20__
 411     if (multi_line)
 412     {
 413         gtk_signal_connect(GTK_OBJECT(GTK_TEXT(m_text)->vadj), "changed",
 414           (GtkSignalFunc) gtk_scrollbar_changed_callback, (gpointer) this );
 415
 416         // only initialize gs_gtk_text_draw once, starting from the next the
 417         // klass::draw will already be wxgtk_text_draw
 418         if ( !gs_gtk_text_draw )
 419         {
 420             GtkDrawCallback&
 421                 draw = GTK_WIDGET_CLASS(GTK_OBJECT(m_text)->klass)->draw;
 422
 423             gs_gtk_text_draw = draw;
 424
 425             draw = wxgtk_text_draw;
 426         }
 427     }
 428 #endif // GTK+ 1.x
 429
 430     if (!value.IsEmpty())
 431     {
 432 #ifdef __WXGTK20__
 433         SetValue( value );
 434 #else
 435
 436 #if !GTK_CHECK_VERSION(1, 2, 0)
 437         // if we don't realize it, GTK 1.0.6 dies with a SIGSEGV in
 438         // gtk_editable_insert_text()
 439         gtk_widget_realize(m_text);
 440 #endif // GTK 1.0
 441
 442         gint tmp = 0;
 443 #if wxUSE_UNICODE
 444         wxWX2MBbuf val = value.mbc_str();
 445         gtk_editable_insert_text( GTK_EDITABLE(m_text), val, strlen(val), &tmp );
 446 #else
 447         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &tmp );
 448 #endif
 449
 450         if (multi_line)
 451         {
 452             // Bring editable's cursor uptodate. Bug in GTK.
 453             SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
 454         }
 455
 456 #endif
 457     }
 458
 459     if (style & wxTE_PASSWORD)
 460     {
 461         if (!multi_line)
 462             gtk_entry_set_visibility( GTK_ENTRY(m_text), FALSE );
 463     }
 464
 465     if (style & wxTE_READONLY)
 466     {
 467         if (!multi_line)
 468             gtk_entry_set_editable( GTK_ENTRY(m_text), FALSE );
 469 #ifdef __WXGTK20__
 470         else
 471             gtk_text_view_set_editable( GTK_TEXT_VIEW( m_text), FALSE);
 472 #else
 473     }
 474     else
 475     {
 476         if (multi_line)
 477             gtk_text_set_editable( GTK_TEXT(m_text), 1 );
 478 #endif
 479     }
 480
 481 #ifdef __WXGTK20__
 482     if (multi_line)
 483     {
 484         if (style & wxTE_RIGHT)
 485             gtk_text_view_set_justification( GTK_TEXT_VIEW(m_text), GTK_JUSTIFY_RIGHT );
 486         else if (style & wxTE_CENTRE)
 487             gtk_text_view_set_justification( GTK_TEXT_VIEW(m_text), GTK_JUSTIFY_CENTER );
 488         // Left justify (alignment) is the default and we don't need to apply GTK_JUSTIFY_LEFT
 489     }
 490     // gtk_entry_set_alignment was introduced in gtk+-2.3.5
 491 #if GTK_CHECK_VERSION(2, 3, 5)
 492     else
 493     {
 494         if (style & wxTE_RIGHT)
 495             gtk_entry_set_alignment( GTK_ENTRY(m_text), 1.0 );
 496         else if (style & wxTE_CENTRE)
 497             gtk_entry_set_alignment( GTK_ENTRY(m_text), 0.5 );
 498     }
 499 #endif // gtk+-2.3.5
 500 #endif // __WXGTK20__
 501
 502     // We want to be notified about text changes.
 503 #ifdef __WXGTK20__
 504     if (multi_line)
 505     {
 506         g_signal_connect( G_OBJECT(m_buffer), "changed",
 507             GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 508     }
 509     else
 510 #endif
 511
 512     {
 513         gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 514             GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 515     }
 516
 517     m_cursor = wxCursor( wxCURSOR_IBEAM );
 518
 519     wxTextAttr attrDef(GetForegroundColour(), GetBackgroundColour(), GetFont());
 520     SetDefaultStyle( attrDef );
 521
 522     return TRUE;
 523 }
 524
 525
 526 void wxTextCtrl::CalculateScrollbar()
 527 {
 528 #ifndef __WXGTK20__
 529     if ((m_windowStyle & wxTE_MULTILINE) == 0) return;
 530
 531     GtkAdjustment *adj = GTK_TEXT(m_text)->vadj;
 532
 533     if (adj->upper - adj->page_size < 0.8)
 534     {
 535         if (m_vScrollbarVisible)
 536         {
 537             gtk_widget_hide( m_vScrollbar );
 538             m_vScrollbarVisible = FALSE;
 539         }
 540     }
 541     else
 542     {
 543         if (!m_vScrollbarVisible)
 544         {
 545             gtk_widget_show( m_vScrollbar );
 546             m_vScrollbarVisible = TRUE;
 547         }
 548     }
 549 #endif
 550 }
 551
 552 wxString wxTextCtrl::GetValue() const
 553 {
 554     wxCHECK_MSG( m_text != NULL, wxT(""), wxT("invalid text ctrl") );
 555
 556     wxString tmp;
 557     if (m_windowStyle & wxTE_MULTILINE)
 558     {
 559 #ifdef __WXGTK20__
 560         GtkTextIter start;
 561         gtk_text_buffer_get_start_iter( m_buffer, &start );
 562         GtkTextIter end;
 563         gtk_text_buffer_get_end_iter( m_buffer, &end );
 564         gchar *text = gtk_text_buffer_get_text( m_buffer, &start, &end, TRUE );
 565
 566 #if wxUSE_UNICODE
 567         wxWCharBuffer buffer( wxConvUTF8.cMB2WX( text ) );
 568 #else
 569         wxCharBuffer buffer( wxConvLocal.cWC2WX( wxConvUTF8.cMB2WC( text ) ) );
 570 #endif
 571         if ( buffer )
 572             tmp = buffer;
 573
 574         g_free( text );
 575 #else
 576         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 577         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 578         tmp = text;
 579         g_free( text );
 580 #endif
 581     }
 582     else
 583     {
 584         tmp = wxGTK_CONV_BACK( gtk_entry_get_text( GTK_ENTRY(m_text) ) );
 585     }
 586
 587     return tmp;
 588 }
 589
 590 void wxTextCtrl::SetValue( const wxString &value )
 591 {
 592     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 593
 594     if (m_windowStyle & wxTE_MULTILINE)
 595     {
 596 #ifdef __WXGTK20__
 597
 598 #if wxUSE_UNICODE
 599         wxCharBuffer buffer( wxConvUTF8.cWX2MB( value) );
 600 #else
 601         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( value ) ) );
 602 #endif
 603         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 604         if (gtk_text_buffer_get_char_count(text_buffer) != 0)
 605             IgnoreNextTextUpdate();
 606
 607         gtk_text_buffer_set_text( m_buffer, buffer, strlen(buffer) );
 608
 609 #else
 610         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 611         gtk_editable_delete_text( GTK_EDITABLE(m_text), 0, len );
 612         len = 0;
 613         gtk_editable_insert_text( GTK_EDITABLE(m_text), value.mbc_str(), value.Length(), &len );
 614 #endif
 615     }
 616     else
 617     {
 618         gtk_entry_set_text( GTK_ENTRY(m_text), wxGTK_CONV( value ) );
 619     }
 620
 621     // GRG, Jun/2000: Changed this after a lot of discussion in
 622     //   the lists. wxWidgets 2.2 will have a set of flags to
 623     //   customize this behaviour.
 624     SetInsertionPoint(0);
 625
 626     m_modified = FALSE;
 627 }
 628
 629 void wxTextCtrl::WriteText( const wxString &text )
 630 {
 631     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 632
 633     if ( text.empty() )
 634         return;
 635
 636     // gtk_text_changed_callback() will set m_modified to true but m_modified
 637     // shouldn't be changed by the program writing to the text control itself,
 638     // so save the old value and restore when we're done
 639     bool oldModified = m_modified;
 640
 641     if ( m_windowStyle & wxTE_MULTILINE )
 642     {
 643 #ifdef __WXGTK20__
 644
 645 #if wxUSE_UNICODE
 646         wxCharBuffer buffer( wxConvUTF8.cWX2MB( text ) );
 647 #else
 648         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( text ) ) );
 649 #endif
 650         if ( !buffer )
 651         {
 652             // what else can we do? at least don't crash...
 653             return;
 654         }
 655
 656         // TODO: Call whatever is needed to delete the selection.
 657         wxGtkTextInsert( m_text, m_buffer, m_defaultStyle, buffer );
 658
 659         GtkAdjustment *adj = gtk_scrolled_window_get_vadjustment( GTK_SCROLLED_WINDOW(m_widget) );
 660         // Scroll to cursor, but only if scrollbar thumb is at the very bottom
 661         if ( adj->value == adj->upper - adj->page_size )
 662         {
 663             gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text),
 664                     gtk_text_buffer_get_insert( m_buffer ), 0.0, FALSE, 0.0, 1.0 );
 665         }
 666 #else // GTK 1.x
 667         // After cursor movements, gtk_text_get_point() is wrong by one.
 668         gtk_text_set_point( GTK_TEXT(m_text), GET_EDITABLE_POS(m_text) );
 669
 670         // always use m_defaultStyle, even if it is empty as otherwise
 671         // resetting the style and appending some more text wouldn't work: if
 672         // we don't specify the style explicitly, the old style would be used
 673         gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
 674         wxGtkTextInsert(m_text, m_defaultStyle, text.c_str(), text.Len());
 675
 676         // we called wxGtkTextInsert with correct font, no need to do anything
 677         // in UpdateFontIfNeeded() any longer
 678         if ( !text.empty() )
 679         {
 680             SetUpdateFont(FALSE);
 681         }
 682
 683         // Bring editable's cursor back uptodate.
 684         SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
 685 #endif // GTK 1.x/2.0
 686     }
 687     else // single line
 688     {
 689         // First remove the selection if there is one
 690         gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
 691
 692         // This moves the cursor pos to behind the inserted text.
 693         gint len = GET_EDITABLE_POS(m_text);
 694
 695 #ifdef __WXGTK20__
 696
 697 #if wxUSE_UNICODE
 698         wxCharBuffer buffer( wxConvUTF8.cWX2MB( text ) );
 699 #else
 700         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( text ) ) );
 701 #endif
 702         gtk_editable_insert_text( GTK_EDITABLE(m_text), buffer, strlen(buffer), &len );
 703
 704 #else
 705         gtk_editable_insert_text( GTK_EDITABLE(m_text), text.c_str(), text.Len(), &len );
 706 #endif
 707
 708         // Bring entry's cursor uptodate.
 709         gtk_entry_set_position( GTK_ENTRY(m_text), len );
 710     }
 711
 712     m_modified = oldModified;
 713 }
 714
 715 void wxTextCtrl::AppendText( const wxString &text )
 716 {
 717     SetInsertionPointEnd();
 718     WriteText( text );
 719 }
 720
 721 wxString wxTextCtrl::GetLineText( long lineNo ) const
 722 {
 723     if (m_windowStyle & wxTE_MULTILINE)
 724     {
 725 #ifndef __WXGTK20__
 726         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 727         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 728
 729         if (text)
 730         {
 731             wxString buf(wxT(""));
 732             long i;
 733             int currentLine = 0;
 734             for (i = 0; currentLine != lineNo && text[i]; i++ )
 735                 if (text[i] == '\n')
 736             currentLine++;
 737             // Now get the text
 738             int j;
 739             for (j = 0; text[i] && text[i] != '\n'; i++, j++ )
 740                 buf += text[i];
 741
 742             g_free( text );
 743             return buf;
 744         }
 745         else
 746         {
 747             return wxEmptyString;
 748         }
 749 #else
 750         GtkTextIter line;
 751         gtk_text_buffer_get_iter_at_line(m_buffer,&line,lineNo);
 752         GtkTextIter end;
 753         gtk_text_buffer_get_end_iter(m_buffer,&end );
 754         gchar *text = gtk_text_buffer_get_text(m_buffer,&line,&end,TRUE);
 755         wxString result(wxGTK_CONV_BACK(text));
 756         g_free(text);
 757         return result.BeforeFirst(wxT('\n'));
 758 #endif
 759     }
 760     else
 761     {
 762         if (lineNo == 0) return GetValue();
 763         return wxEmptyString;
 764     }
 765 }
 766
 767 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 768 {
 769   /* If you implement this, don't forget to update the documentation!
 770    * (file docs/latex/wx/text.tex) */
 771     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
 772 }
 773
 774 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
 775 {
 776     if ( m_windowStyle & wxTE_MULTILINE )
 777     {
 778         wxString text = GetValue();
 779
 780         // cast to prevent warning. But pos really should've been unsigned.
 781         if( (unsigned long)pos > text.Len()  )
 782             return FALSE;
 783
 784         *x=0;   // First Col
 785         *y=0;   // First Line
 786
 787         const wxChar* stop = text.c_str() + pos;
 788         for ( const wxChar *p = text.c_str(); p < stop; p++ )
 789         {
 790             if (*p == wxT('\n'))
 791             {
 792                 (*y)++;
 793                 *x=0;
 794             }
 795             else
 796                 (*x)++;
 797         }
 798     }
 799     else // single line control
 800     {
 801         if ( pos <= GTK_ENTRY(m_text)->text_length )
 802         {
 803             *y = 0;
 804             *x = pos;
 805         }
 806         else
 807         {
 808             // index out of bounds
 809             return FALSE;
 810         }
 811     }
 812
 813     return TRUE;
 814 }
 815
 816 long wxTextCtrl::XYToPosition(long x, long y ) const
 817 {
 818     if (!(m_windowStyle & wxTE_MULTILINE)) return 0;
 819
 820     long pos=0;
 821     for( int i=0; i<y; i++ ) pos += GetLineLength(i) + 1; // one for '\n'
 822
 823     pos += x;
 824     return pos;
 825 }
 826
 827 int wxTextCtrl::GetLineLength(long lineNo) const
 828 {
 829     wxString str = GetLineText (lineNo);
 830     return (int) str.Length();
 831 }
 832
 833 int wxTextCtrl::GetNumberOfLines() const
 834 {
 835     if (m_windowStyle & wxTE_MULTILINE)
 836     {
 837 #ifdef __WXGTK20__
 838         return gtk_text_buffer_get_line_count( m_buffer );
 839 #else
 840         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 841         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 842
 843         if (text)
 844         {
 845             int currentLine = 0;
 846             for (int i = 0; i < len; i++ )
 847             {
 848                 if (text[i] == '\n')
 849                     currentLine++;
 850             }
 851             g_free( text );
 852
 853             // currentLine is 0 based, add 1 to get number of lines
 854             return currentLine + 1;
 855         }
 856         else
 857         {
 858             return 0;
 859         }
 860 #endif
 861     }
 862     else
 863     {
 864         return 1;
 865     }
 866 }
 867
 868 void wxTextCtrl::SetInsertionPoint( long pos )
 869 {
 870     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 871
 872     if ( IsMultiLine() )
 873     {
 874 #ifdef __WXGTK20__
 875         GtkTextIter iter;
 876         gtk_text_buffer_get_iter_at_offset( m_buffer, &iter, pos );
 877         gtk_text_buffer_place_cursor( m_buffer, &iter );
 878         gtk_text_view_scroll_mark_onscreen
 879         (
 880             GTK_TEXT_VIEW(m_text),
 881             gtk_text_buffer_get_insert( m_buffer )
 882         );
 883 #else // GTK+ 1.x
 884         gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 885           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 886
 887         /* we fake a set_point by inserting and deleting. as the user
 888            isn't supposed to get to know about this non-sense, we
 889            disconnect so that no events are sent to the user program. */
 890
 891         gint tmp = (gint)pos;
 892         gtk_editable_insert_text( GTK_EDITABLE(m_text), " ", 1, &tmp );
 893         gtk_editable_delete_text( GTK_EDITABLE(m_text), tmp-1, tmp );
 894
 895         gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 896           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 897
 898         // bring editable's cursor uptodate. Bug in GTK.
 899         SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
 900 #endif // GTK+ 2/1
 901     }
 902     else
 903     {
 904         gtk_entry_set_position( GTK_ENTRY(m_text), (int)pos );
 905
 906         // Bring editable's cursor uptodate. Bug in GTK.
 907         SET_EDITABLE_POS(m_text, (guint32)pos);
 908     }
 909 }
 910
 911 void wxTextCtrl::SetInsertionPointEnd()
 912 {
 913     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 914
 915     if (m_windowStyle & wxTE_MULTILINE)
 916     {
 917 #ifdef __WXGTK20__
 918         GtkTextIter end;
 919         gtk_text_buffer_get_end_iter( m_buffer, &end );
 920         gtk_text_buffer_place_cursor( m_buffer, &end );
 921 #else
 922         SetInsertionPoint(gtk_text_get_length(GTK_TEXT(m_text)));
 923 #endif
 924     }
 925     else
 926     {
 927         gtk_entry_set_position( GTK_ENTRY(m_text), -1 );
 928     }
 929 }
 930
 931 void wxTextCtrl::SetEditable( bool editable )
 932 {
 933     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 934
 935     if (m_windowStyle & wxTE_MULTILINE)
 936     {
 937 #ifdef __WXGTK20__
 938         gtk_text_view_set_editable( GTK_TEXT_VIEW(m_text), editable );
 939 #else
 940         gtk_text_set_editable( GTK_TEXT(m_text), editable );
 941 #endif
 942     }
 943     else
 944     {
 945         gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
 946     }
 947 }
 948
 949 bool wxTextCtrl::Enable( bool enable )
 950 {
 951     if (!wxWindowBase::Enable(enable))
 952     {
 953         // nothing to do
 954         return FALSE;
 955     }
 956
 957     if (m_windowStyle & wxTE_MULTILINE)
 958     {
 959 #ifdef __WXGTK20__
 960         SetEditable( enable );
 961 #else
 962         gtk_text_set_editable( GTK_TEXT(m_text), enable );
 963         OnParentEnable(enable);
 964 #endif
 965     }
 966     else
 967     {
 968         gtk_widget_set_sensitive( m_text, enable );
 969     }
 970
 971     return TRUE;
 972 }
 973
 974 // wxGTK-specific: called recursively by Enable,
 975 // to give widgets an oppprtunity to correct their colours after they
 976 // have been changed by Enable
 977 void wxTextCtrl::OnParentEnable( bool enable )
 978 {
 979     // If we have a custom background colour, we use this colour in both
 980     // disabled and enabled mode, or we end up with a different colour under the
 981     // text.
 982     wxColour oldColour = GetBackgroundColour();
 983     if (oldColour.Ok())
 984     {
 985         // Need to set twice or it'll optimize the useful stuff out
 986         if (oldColour == * wxWHITE)
 987             SetBackgroundColour(*wxBLACK);
 988         else
 989             SetBackgroundColour(*wxWHITE);
 990         SetBackgroundColour(oldColour);
 991     }
 992 }
 993
 994 void wxTextCtrl::MarkDirty()
 995 {
 996     m_modified = TRUE;
 997 }
 998
 999 void wxTextCtrl::DiscardEdits()
1000 {
1001     m_modified = FALSE;
1002 }
1003
1004 // ----------------------------------------------------------------------------
1005 // max text length support
1006 // ----------------------------------------------------------------------------
1007
1008 void wxTextCtrl::IgnoreNextTextUpdate()
1009 {
1010     m_ignoreNextUpdate = TRUE;
1011 }
1012
1013 bool wxTextCtrl::IgnoreTextUpdate()
1014 {
1015     if ( m_ignoreNextUpdate )
1016     {
1017         m_ignoreNextUpdate = FALSE;
1018
1019         return TRUE;
1020     }
1021
1022     return FALSE;
1023 }
1024
1025 void wxTextCtrl::SetMaxLength(unsigned long len)
1026 {
1027     if ( !HasFlag(wxTE_MULTILINE) )
1028     {
1029         gtk_entry_set_max_length(GTK_ENTRY(m_text), len);
1030
1031         // there is a bug in GTK+ 1.2.x: "changed" signal is emitted even if
1032         // we had tried to enter more text than allowed by max text length and
1033         // the text wasn't really changed
1034         //
1035         // to detect this and generate TEXT_MAXLEN event instead of
1036         // TEXT_CHANGED one in this case we also catch "insert_text" signal
1037         //
1038         // when max len is set to 0 we disconnect our handler as it means that
1039         // we shouldn't check anything any more
1040         if ( len )
1041         {
1042             gtk_signal_connect( GTK_OBJECT(m_text),
1043                                 "insert_text",
1044                                 GTK_SIGNAL_FUNC(gtk_insert_text_callback),
1045                                 (gpointer)this);
1046         }
1047         else // no checking
1048         {
1049             gtk_signal_disconnect_by_func
1050             (
1051                 GTK_OBJECT(m_text),
1052                 GTK_SIGNAL_FUNC(gtk_insert_text_callback),
1053                 (gpointer)this
1054             );
1055         }
1056     }
1057 }
1058
1059 void wxTextCtrl::SetSelection( long from, long to )
1060 {
1061     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1062
1063     if (from == -1 && to == -1)
1064     {
1065         from = 0;
1066         to = GetValue().Length();
1067     }
1068
1069 #ifndef __WXGTK20__
1070     if ( (m_windowStyle & wxTE_MULTILINE) &&
1071          !GTK_TEXT(m_text)->line_start_cache )
1072     {
1073         // tell the programmer that it didn't work
1074         wxLogDebug(_T("Can't call SetSelection() before realizing the control"));
1075         return;
1076     }
1077 #endif
1078
1079     if (m_windowStyle & wxTE_MULTILINE)
1080     {
1081 #ifdef __WXGTK20__
1082         GtkTextIter fromi, toi;
1083         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1084         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1085
1086         gtk_text_buffer_place_cursor( m_buffer, &toi );
1087         gtk_text_buffer_move_mark_by_name( m_buffer, "selection_bound", &fromi );
1088 #else
1089         gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1090 #endif
1091     }
1092     else
1093     {
1094         gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1095     }
1096 }
1097
1098 void wxTextCtrl::ShowPosition( long pos )
1099 {
1100     if (m_windowStyle & wxTE_MULTILINE)
1101     {
1102 #ifdef __WXGTK20__
1103         GtkTextIter iter;
1104         gtk_text_buffer_get_start_iter( m_buffer, &iter );
1105         gtk_text_iter_set_offset( &iter, pos );
1106         GtkTextMark *mark = gtk_text_buffer_create_mark( m_buffer, NULL, &iter, TRUE );
1107         gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text), mark, 0.0, FALSE, 0.0, 0.0 );
1108 #else // GTK 1.x
1109         GtkAdjustment *vp = GTK_TEXT(m_text)->vadj;
1110         float totalLines =  (float) GetNumberOfLines();
1111         long posX;
1112         long posY;
1113         PositionToXY(pos, &posX, &posY);
1114         float posLine = (float) posY;
1115         float p = (posLine/totalLines)*(vp->upper - vp->lower) + vp->lower;
1116         gtk_adjustment_set_value(GTK_TEXT(m_text)->vadj, p);
1117 #endif // GTK 1.x/2.x
1118     }
1119 }
1120
1121 #ifdef __WXGTK20__
1122
1123 wxTextCtrlHitTestResult
1124 wxTextCtrl::HitTest(const wxPoint& pt, long *pos) const
1125 {
1126     if ( !IsMultiLine() )
1127     {
1128         // not supported
1129         return wxTE_HT_UNKNOWN;
1130     }
1131
1132     int x, y;
1133     gtk_text_view_window_to_buffer_coords
1134     (
1135         GTK_TEXT_VIEW(m_text),
1136         GTK_TEXT_WINDOW_TEXT,
1137         pt.x, pt.y,
1138         &x, &y
1139     );
1140
1141     GtkTextIter iter;
1142     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &iter, x, y);
1143     if ( pos )
1144         *pos = gtk_text_iter_get_offset(&iter);
1145
1146     return wxTE_HT_ON_TEXT;
1147 }
1148
1149 #endif // __WXGTK20__
1150
1151 long wxTextCtrl::GetInsertionPoint() const
1152 {
1153     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1154
1155 #ifdef __WXGTK20__
1156     if (m_windowStyle & wxTE_MULTILINE)
1157     {
1158         // There is no direct accessor for the cursor, but
1159         // internally, the cursor is the "mark" called
1160         // "insert" in the text view's btree structure.
1161
1162         GtkTextMark *mark = gtk_text_buffer_get_insert( m_buffer );
1163         GtkTextIter cursor;
1164         gtk_text_buffer_get_iter_at_mark( m_buffer, &cursor, mark );
1165
1166         return gtk_text_iter_get_offset( &cursor );
1167     }
1168     else
1169 #endif
1170     {
1171     return (long) GET_EDITABLE_POS(m_text);
1172     }
1173 }
1174
1175 long wxTextCtrl::GetLastPosition() const
1176 {
1177     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1178
1179     int pos = 0;
1180
1181     if (m_windowStyle & wxTE_MULTILINE)
1182     {
1183 #ifdef __WXGTK20__
1184         GtkTextIter end;
1185         gtk_text_buffer_get_end_iter( m_buffer, &end );
1186
1187         pos = gtk_text_iter_get_offset( &end );
1188 #else
1189         pos = gtk_text_get_length( GTK_TEXT(m_text) );
1190 #endif
1191     }
1192     else
1193     {
1194         pos = GTK_ENTRY(m_text)->text_length;
1195     }
1196
1197     return (long)pos;
1198 }
1199
1200 void wxTextCtrl::Remove( long from, long to )
1201 {
1202     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1203
1204 #ifdef __WXGTK20__
1205     if (m_windowStyle & wxTE_MULTILINE)
1206     {
1207         GtkTextIter fromi, toi;
1208         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1209         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1210
1211         gtk_text_buffer_delete( m_buffer, &fromi, &toi );
1212     }
1213     else // single line
1214 #endif
1215     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1216 }
1217
1218 void wxTextCtrl::Replace( long from, long to, const wxString &value )
1219 {
1220     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1221
1222     Remove( from, to );
1223
1224     if (!value.IsEmpty())
1225     {
1226 #ifdef __WXGTK20__
1227         SetInsertionPoint( from );
1228         WriteText( value );
1229 #else // GTK 1.x
1230         gint pos = (gint)from;
1231 #if wxUSE_UNICODE
1232         wxWX2MBbuf buf = value.mbc_str();
1233         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &pos );
1234 #else
1235         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &pos );
1236 #endif // wxUSE_UNICODE
1237 #endif // GTK 1.x/2.x
1238     }
1239 }
1240
1241 void wxTextCtrl::Cut()
1242 {
1243     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1244
1245 #ifdef __WXGTK20__
1246     if (m_windowStyle & wxTE_MULTILINE)
1247         g_signal_emit_by_name(m_text, "cut-clipboard");
1248     else
1249 #endif
1250         gtk_editable_cut_clipboard(GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG);
1251 }
1252
1253 void wxTextCtrl::Copy()
1254 {
1255     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1256
1257 #ifdef __WXGTK20__
1258     if (m_windowStyle & wxTE_MULTILINE)
1259         g_signal_emit_by_name(m_text, "copy-clipboard");
1260     else
1261 #endif
1262         gtk_editable_copy_clipboard(GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG);
1263 }
1264
1265 void wxTextCtrl::Paste()
1266 {
1267     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1268
1269 #ifdef __WXGTK20__
1270     if (m_windowStyle & wxTE_MULTILINE)
1271         g_signal_emit_by_name(m_text, "paste-clipboard");
1272     else
1273 #endif
1274         gtk_editable_paste_clipboard(GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG);
1275 }
1276
1277 // Undo/redo
1278 void wxTextCtrl::Undo()
1279 {
1280     // TODO
1281     wxFAIL_MSG( wxT("wxTextCtrl::Undo not implemented") );
1282 }
1283
1284 void wxTextCtrl::Redo()
1285 {
1286     // TODO
1287     wxFAIL_MSG( wxT("wxTextCtrl::Redo not implemented") );
1288 }
1289
1290 bool wxTextCtrl::CanUndo() const
1291 {
1292     // TODO
1293     //wxFAIL_MSG( wxT("wxTextCtrl::CanUndo not implemented") );
1294     return FALSE;
1295 }
1296
1297 bool wxTextCtrl::CanRedo() const
1298 {
1299     // TODO
1300     //wxFAIL_MSG( wxT("wxTextCtrl::CanRedo not implemented") );
1301     return FALSE;
1302 }
1303
1304 // If the return values from and to are the same, there is no
1305 // selection.
1306 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1307 {
1308     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1309
1310     gint from = -1;
1311     gint to = -1;
1312     bool haveSelection = FALSE;
1313
1314 #ifdef __WXGTK20__
1315      if (m_windowStyle & wxTE_MULTILINE)
1316      {
1317          GtkTextIter ifrom, ito;
1318          if ( gtk_text_buffer_get_selection_bounds(m_buffer, &ifrom, &ito) )
1319          {
1320              haveSelection = TRUE;
1321              from = gtk_text_iter_get_offset(&ifrom);
1322              to = gtk_text_iter_get_offset(&ito);
1323          }
1324      }
1325      else  // not multi-line
1326      {
1327          if ( gtk_editable_get_selection_bounds( GTK_EDITABLE(m_text),
1328                                                  &from, &to) )
1329          {
1330              haveSelection = TRUE;
1331          }
1332      }
1333 #else //  not GTK2
1334      if ( (GTK_EDITABLE(m_text)->has_selection) )
1335      {
1336          haveSelection = TRUE;
1337          from = (long) GTK_EDITABLE(m_text)->selection_start_pos;
1338          to = (long) GTK_EDITABLE(m_text)->selection_end_pos;
1339      }
1340 #endif
1341
1342      if (! haveSelection )
1343           from = to = GetInsertionPoint();
1344
1345      if ( from > to )
1346      {
1347          // exchange them to be compatible with wxMSW
1348          gint tmp = from;
1349          from = to;
1350          to = tmp;
1351      }
1352
1353     if ( fromOut )
1354         *fromOut = from;
1355     if ( toOut )
1356         *toOut = to;
1357 }
1358
1359
1360 bool wxTextCtrl::IsEditable() const
1361 {
1362     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1363
1364 #ifdef __WXGTK20__
1365     if (m_windowStyle & wxTE_MULTILINE)
1366     {
1367         return gtk_text_view_get_editable(GTK_TEXT_VIEW(m_text));
1368     }
1369     else
1370     {
1371         return gtk_editable_get_editable(GTK_EDITABLE(m_text));
1372     }
1373 #else
1374     return GTK_EDITABLE(m_text)->editable;
1375 #endif
1376 }
1377
1378 bool wxTextCtrl::IsModified() const
1379 {
1380     return m_modified;
1381 }
1382
1383 void wxTextCtrl::Clear()
1384 {
1385     SetValue( wxT("") );
1386 }
1387
1388 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1389 {
1390     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1391
1392     if ((key_event.GetKeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
1393     {
1394         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1395         event.SetEventObject(this);
1396         event.SetString(GetValue());
1397         if (GetEventHandler()->ProcessEvent(event)) return;
1398     }
1399
1400     if ((key_event.GetKeyCode() == WXK_RETURN) && !(m_windowStyle & wxTE_MULTILINE))
1401     {
1402         // This will invoke the dialog default action, such
1403         // as the clicking the default button.
1404
1405         wxWindow *top_frame = m_parent;
1406         while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
1407             top_frame = top_frame->GetParent();
1408
1409         if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
1410         {
1411             GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
1412
1413             if (window->default_widget)
1414             {
1415                 gtk_widget_activate (window->default_widget);
1416                 return;
1417             }
1418         }
1419     }
1420
1421     key_event.Skip();
1422 }
1423
1424 GtkWidget* wxTextCtrl::GetConnectWidget()
1425 {
1426     return GTK_WIDGET(m_text);
1427 }
1428
1429 bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
1430 {
1431     if (m_windowStyle & wxTE_MULTILINE)
1432     {
1433 #ifdef __WXGTK20__
1434         return window == gtk_text_view_get_window( GTK_TEXT_VIEW( m_text ), GTK_TEXT_WINDOW_TEXT );  // pure guesswork
1435 #else
1436         return (window == GTK_TEXT(m_text)->text_area);
1437 #endif
1438     }
1439     else
1440     {
1441         return (window == GTK_ENTRY(m_text)->text_area);
1442     }
1443 }
1444
1445 // the font will change for subsequent text insertiongs
1446 bool wxTextCtrl::SetFont( const wxFont &font )
1447 {
1448     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1449
1450     if ( !wxTextCtrlBase::SetFont(font) )
1451     {
1452         // font didn't change, nothing to do
1453         return FALSE;
1454     }
1455
1456     if ( m_windowStyle & wxTE_MULTILINE )
1457     {
1458         SetUpdateFont(TRUE);
1459
1460         m_defaultStyle.SetFont(font);
1461
1462         ChangeFontGlobally();
1463     }
1464
1465     return TRUE;
1466 }
1467
1468 void wxTextCtrl::ChangeFontGlobally()
1469 {
1470     // this method is very inefficient and hence should be called as rarely as
1471     // possible!
1472     //
1473     // TODO: it can be implemented much more efficiently for GTK2
1474 #ifndef __WXGTK20__
1475     wxASSERT_MSG( (m_windowStyle & wxTE_MULTILINE) && m_updateFont,
1476
1477                   _T("shouldn't be called for single line controls") );
1478 #else
1479     wxASSERT_MSG( (m_windowStyle & wxTE_MULTILINE),
1480                   _T("shouldn't be called for single line controls") );
1481 #endif
1482
1483     wxString value = GetValue();
1484     if ( !value.IsEmpty() )
1485     {
1486         SetUpdateFont(FALSE);
1487
1488         Clear();
1489         AppendText(value);
1490     }
1491 }
1492
1493 #ifndef __WXGTK20__
1494
1495 void wxTextCtrl::UpdateFontIfNeeded()
1496 {
1497     if ( m_updateFont )
1498         ChangeFontGlobally();
1499 }
1500
1501 #endif // GTK+ 1.x
1502
1503 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1504 {
1505     if ( !wxControl::SetForegroundColour(colour) )
1506         return FALSE;
1507
1508     // update default fg colour too
1509     m_defaultStyle.SetTextColour(colour);
1510
1511     return TRUE;
1512 }
1513
1514 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1515 {
1516     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1517
1518     if ( !wxControl::SetBackgroundColour( colour ) )
1519         return FALSE;
1520
1521 #ifndef __WXGTK20__
1522     if (!m_widget->window)
1523         return FALSE;
1524 #endif
1525
1526     if (!m_backgroundColour.Ok())
1527         return FALSE;
1528
1529     if (m_windowStyle & wxTE_MULTILINE)
1530     {
1531 #ifndef __WXGTK20__
1532         GdkWindow *window = GTK_TEXT(m_text)->text_area;
1533         if (!window)
1534             return FALSE;
1535         m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
1536         gdk_window_set_background( window, m_backgroundColour.GetColor() );
1537         gdk_window_clear( window );
1538 #endif
1539     }
1540
1541     // change active background color too
1542     m_defaultStyle.SetBackgroundColour( colour );
1543
1544     return TRUE;
1545 }
1546
1547 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
1548 {
1549     if ( m_windowStyle & wxTE_MULTILINE )
1550     {
1551         if ( style.IsDefault() )
1552         {
1553             // nothing to do
1554             return TRUE;
1555         }
1556 #ifdef __WXGTK20__
1557         gint l = gtk_text_buffer_get_char_count( m_buffer );
1558
1559         wxCHECK_MSG( start >= 0 && end <= l, FALSE,
1560                      _T("invalid range in wxTextCtrl::SetStyle") );
1561
1562         GtkTextIter starti, endi;
1563         gtk_text_buffer_get_iter_at_offset( m_buffer, &starti, start );
1564         gtk_text_buffer_get_iter_at_offset( m_buffer, &endi, end );
1565
1566         // use the attributes from style which are set in it and fall back
1567         // first to the default style and then to the text control default
1568         // colours for the others
1569         wxTextAttr attr = wxTextAttr::Combine(style, m_defaultStyle, this);
1570
1571         wxGtkTextApplyTagsFromAttr( m_buffer, attr, &starti, &endi );
1572
1573          return TRUE;
1574 #else
1575         // VERY dirty way to do that - removes the required text and re-adds it
1576         // with styling (FIXME)
1577
1578         gint l = gtk_text_get_length( GTK_TEXT(m_text) );
1579
1580         wxCHECK_MSG( start >= 0 && end <= l, FALSE,
1581                      _T("invalid range in wxTextCtrl::SetStyle") );
1582
1583         gint old_pos = gtk_editable_get_position( GTK_EDITABLE(m_text) );
1584         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), start, end );
1585         wxString tmp(text,*wxConvCurrent);
1586         g_free( text );
1587
1588         gtk_editable_delete_text( GTK_EDITABLE(m_text), start, end );
1589         gtk_editable_set_position( GTK_EDITABLE(m_text), start );
1590
1591 #if wxUSE_UNICODE
1592         wxWX2MBbuf buf = tmp.mbc_str();
1593         const char *txt = buf;
1594         size_t txtlen = strlen(buf);
1595 #else
1596         const char *txt = tmp;
1597         size_t txtlen = tmp.length();
1598 #endif
1599
1600         // use the attributes from style which are set in it and fall back
1601         // first to the default style and then to the text control default
1602         // colours for the others
1603         wxGtkTextInsert(m_text,
1604                         wxTextAttr::Combine(style, m_defaultStyle, this),
1605                         txt,
1606                         txtlen);
1607
1608         /* does not seem to help under GTK+ 1.2 !!!
1609         gtk_editable_set_position( GTK_EDITABLE(m_text), old_pos ); */
1610         SetInsertionPoint( old_pos );
1611 #endif
1612         return TRUE;
1613     }
1614     else // singe line
1615     {
1616         // cannot do this for GTK+'s Entry widget
1617         return FALSE;
1618     }
1619 }
1620
1621 void wxTextCtrl::DoApplyWidgetStyle(GtkRcStyle *style)
1622 {
1623     gtk_widget_modify_style(m_text, style);
1624 }
1625
1626 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1627 {
1628     Cut();
1629 }
1630
1631 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1632 {
1633     Copy();
1634 }
1635
1636 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1637 {
1638     Paste();
1639 }
1640
1641 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1642 {
1643     Undo();
1644 }
1645
1646 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1647 {
1648     Redo();
1649 }
1650
1651 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1652 {
1653     event.Enable( CanCut() );
1654 }
1655
1656 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1657 {
1658     event.Enable( CanCopy() );
1659 }
1660
1661 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1662 {
1663     event.Enable( CanPaste() );
1664 }
1665
1666 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1667 {
1668     event.Enable( CanUndo() );
1669 }
1670
1671 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1672 {
1673     event.Enable( CanRedo() );
1674 }
1675
1676 void wxTextCtrl::OnInternalIdle()
1677 {
1678     wxCursor cursor = m_cursor;
1679     if (g_globalCursor.Ok()) cursor = g_globalCursor;
1680
1681     if (cursor.Ok())
1682     {
1683 #ifndef __WXGTK20__
1684         GdkWindow *window = (GdkWindow*) NULL;
1685         if (HasFlag(wxTE_MULTILINE))
1686             window = GTK_TEXT(m_text)->text_area;
1687         else
1688             window = GTK_ENTRY(m_text)->text_area;
1689
1690         if (window)
1691             gdk_window_set_cursor( window, cursor.GetCursor() );
1692
1693         if (!g_globalCursor.Ok())
1694             cursor = *wxSTANDARD_CURSOR;
1695
1696         window = m_widget->window;
1697         if ((window) && !(GTK_WIDGET_NO_WINDOW(m_widget)))
1698             gdk_window_set_cursor( window, cursor.GetCursor() );
1699 #endif
1700     }
1701
1702     if (g_delayedFocus == this)
1703     {
1704         if (GTK_WIDGET_REALIZED(m_widget))
1705         {
1706             gtk_widget_grab_focus( m_widget );
1707             g_delayedFocus = NULL;
1708         }
1709     }
1710
1711     if (wxUpdateUIEvent::CanUpdate(this))
1712         UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
1713 }
1714
1715 wxSize wxTextCtrl::DoGetBestSize() const
1716 {
1717     // FIXME should be different for multi-line controls...
1718     wxSize ret( wxControl::DoGetBestSize() );
1719     wxSize best(80, ret.y);
1720     CacheBestSize(best);
1721     return best;
1722 }
1723
1724 // ----------------------------------------------------------------------------
1725 // freeze/thaw
1726 // ----------------------------------------------------------------------------
1727
1728 void wxTextCtrl::Freeze()
1729 {
1730     if ( HasFlag(wxTE_MULTILINE) )
1731     {
1732 #ifdef __WXGTK20__
1733         if ( !m_frozenness++ )
1734         {
1735             // freeze textview updates and remove buffer
1736             g_signal_connect( G_OBJECT(m_text), "expose_event",
1737                 GTK_SIGNAL_FUNC(gtk_text_exposed_callback), (gpointer)this);
1738             g_signal_connect( G_OBJECT(m_widget), "expose_event",
1739                 GTK_SIGNAL_FUNC(gtk_text_exposed_callback), (gpointer)this);
1740             gtk_widget_set_sensitive(m_widget, false);
1741             g_object_ref(m_buffer);
1742             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), gtk_text_buffer_new(NULL));
1743     }
1744 #else
1745         gtk_text_freeze(GTK_TEXT(m_text));
1746 #endif
1747     }
1748 }
1749
1750 void wxTextCtrl::Thaw()
1751 {
1752     if ( HasFlag(wxTE_MULTILINE) )
1753     {
1754 #ifdef __WXGTK20__
1755         wxASSERT_MSG( m_frozenness > 0, _T("Thaw() without matching Freeze()") );
1756
1757         if ( !--m_frozenness )
1758         {
1759             // Reattach buffer and thaw textview updates
1760             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), m_buffer);
1761             g_object_unref(m_buffer);
1762             gtk_widget_set_sensitive(m_widget, true);
1763             g_signal_handlers_disconnect_by_func(m_widget, (gpointer)gtk_text_exposed_callback, this);
1764             g_signal_handlers_disconnect_by_func(m_text, (gpointer)gtk_text_exposed_callback, this);
1765         }
1766 #else
1767         GTK_TEXT(m_text)->vadj->value = 0.0;
1768
1769         gtk_text_thaw(GTK_TEXT(m_text));
1770 #endif
1771     }
1772 }
1773
1774 // ----------------------------------------------------------------------------
1775 // scrolling
1776 // ----------------------------------------------------------------------------
1777
1778 GtkAdjustment *wxTextCtrl::GetVAdj() const
1779 {
1780     if ( !IsMultiLine() )
1781         return NULL;
1782
1783 #ifdef __WXGTK20__
1784     return gtk_scrolled_window_get_vadjustment(GTK_SCROLLED_WINDOW(m_widget));
1785 #else
1786     return GTK_TEXT(m_text)->vadj;
1787 #endif
1788 }
1789
1790 bool wxTextCtrl::DoScroll(GtkAdjustment *adj, int diff)
1791 {
1792     float value = adj->value + diff;
1793
1794     if ( value < 0 )
1795         value = 0;
1796
1797     float upper = adj->upper - adj->page_size;
1798     if ( value > upper )
1799         value = upper;
1800
1801     // did we noticeably change the scroll position?
1802     if ( fabs(adj->value - value) < 0.2 )
1803     {
1804         // well, this is what Robert does in wxScrollBar, so it must be good...
1805         return FALSE;
1806     }
1807
1808     adj->value = value;
1809
1810 #ifdef __WXGTK20__
1811     gtk_adjustment_value_changed(GTK_ADJUSTMENT(adj));
1812 #else
1813     gtk_signal_emit_by_name(GTK_OBJECT(adj), "value_changed");
1814 #endif
1815
1816     return TRUE;
1817 }
1818
1819 bool wxTextCtrl::ScrollLines(int lines)
1820 {
1821     GtkAdjustment *adj = GetVAdj();
1822     if ( !adj )
1823         return FALSE;
1824
1825 #ifdef __WXGTK20__
1826     int diff = (int)ceil(lines*adj->step_increment);
1827 #else
1828     // this is hardcoded to 10 in GTK+ 1.2 (great idea)
1829     int diff = 10*lines;
1830 #endif
1831
1832     return DoScroll(adj, diff);
1833 }
1834
1835 bool wxTextCtrl::ScrollPages(int pages)
1836 {
1837     GtkAdjustment *adj = GetVAdj();
1838     if ( !adj )
1839         return FALSE;
1840
1841     return DoScroll(adj, (int)ceil(pages*adj->page_increment));
1842 }
1843
1844
1845 // static
1846 wxVisualAttributes
1847 wxTextCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1848 {
1849     return GetDefaultAttributesFromGTKWidget(gtk_entry_new, true);
1850 }