src/common/variant.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/variant.cpp
   3 // Purpose:     wxVariant class, container for any type
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     10/09/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c)
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx/wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifdef __BORLANDC__
  16     #pragma hdrstop
  17 #endif
  18
  19 #include "wx/variant.h"
  20
  21 #if wxUSE_VARIANT
  22
  23 #ifndef WX_PRECOMP
  24     #include "wx/string.h"
  25     #include "wx/math.h"
  26     #if wxUSE_STREAMS
  27         #include "wx/stream.h"
  28     #endif
  29 #endif
  30
  31 #if wxUSE_STD_IOSTREAM
  32     #if wxUSE_IOSTREAMH
  33         #include <fstream.h>
  34     #else
  35         #include <fstream>
  36     #endif
  37 #endif
  38
  39 #if defined(__MWERKS__) && __MSL__ >= 0x6000
  40 namespace std {}
  41 using namespace std ;
  42 #endif
  43
  44 #if wxUSE_STREAMS
  45     #include "wx/txtstrm.h"
  46 #endif
  47
  48 #include "wx/string.h"
  49 #include "wx/tokenzr.h"
  50
  51 IMPLEMENT_ABSTRACT_CLASS(wxVariantData, wxObject)
  52
  53 wxVariant WXDLLIMPEXP_BASE wxNullVariant;
  54
  55
  56 /*
  57  * wxVariant
  58  */
  59
  60 IMPLEMENT_DYNAMIC_CLASS(wxVariant, wxObject)
  61
  62 wxVariant::wxVariant()
  63 {
  64     m_data = (wxVariantData*) NULL;
  65 }
  66
  67 bool wxVariant::IsNull() const
  68 {
  69      return (m_data == (wxVariantData*) NULL);
  70 }
  71
  72 void wxVariant::MakeNull()
  73 {
  74     UnRef();
  75 }
  76
  77 void wxVariant::Clear()
  78 {
  79     m_name = wxEmptyString;
  80 }
  81
  82 wxVariant::wxVariant(const wxVariant& variant)
  83     : wxObject()
  84 {
  85     m_data = (wxVariantData*) NULL;
  86
  87     if (!variant.IsNull())
  88         Ref(variant);
  89
  90     m_name = variant.m_name;
  91 }
  92
  93 wxVariant::wxVariant(wxVariantData* data, const wxString& name) // User-defined data
  94 {
  95     m_data = data;
  96     m_name = name;
  97 }
  98
  99 wxVariant::~wxVariant()
 100 {
 101     UnRef();
 102 }
 103
 104 // Assignment
 105 void wxVariant::operator= (const wxVariant& variant)
 106 {
 107     Ref(variant);
 108     m_name = variant.m_name;
 109 }
 110
 111 // myVariant = new wxStringVariantData("hello")
 112 void wxVariant::operator= (wxVariantData* variantData)
 113 {
 114     UnRef();
 115     m_data = variantData;
 116 }
 117
 118 bool wxVariant::operator== (const wxVariant& variant) const
 119 {
 120     if (IsNull() || variant.IsNull())
 121         return (IsNull() == variant.IsNull());
 122
 123     return (GetData()->Eq(* variant.GetData()));
 124 }
 125
 126 bool wxVariant::operator!= (const wxVariant& variant) const
 127 {
 128     return (!(*this == variant));
 129 }
 130
 131
 132 wxString wxVariant::MakeString() const
 133 {
 134     if (!IsNull())
 135     {
 136         wxString str;
 137         if (GetData()->Write(str))
 138             return str;
 139     }
 140     return wxEmptyString;
 141 }
 142
 143 void wxVariant::SetData(wxVariantData* data)
 144 {
 145     UnRef();
 146     m_data = data;
 147 }
 148
 149 void wxVariant::Ref(const wxVariant& clone)
 150 {
 151     // nothing to be done
 152     if (m_data == clone.m_data)
 153         return;
 154
 155     // delete reference to old data
 156     UnRef();
 157
 158     // reference new data
 159     if ( clone.m_data )
 160     {
 161         m_data = clone.m_data;
 162         m_data->m_count++;
 163     }
 164 }
 165
 166
 167 void wxVariant::UnRef()
 168 {
 169     if ( m_data )
 170     {
 171         wxASSERT_MSG( m_data->m_count > 0, _T("invalid ref data count") );
 172
 173         m_data->DecRef();
 174         m_data = NULL;
 175     }
 176 }
 177
 178
 179 // Returns a string representing the type of the variant,
 180 // e.g. "string", "bool", "list", "double", "long"
 181 wxString wxVariant::GetType() const
 182 {
 183     if (IsNull())
 184         return wxString(wxT("null"));
 185     else
 186         return GetData()->GetType();
 187 }
 188
 189
 190 bool wxVariant::IsType(const wxString& type) const
 191 {
 192     return (GetType() == type);
 193 }
 194
 195 bool wxVariant::IsValueKindOf(const wxClassInfo* type) const
 196 {
 197     wxClassInfo* info=GetData()->GetValueClassInfo();
 198     return info ? info->IsKindOf(type) : false ;
 199 }
 200
 201
 202 // -----------------------------------------------------------------
 203 // wxVariantDataLong
 204 // -----------------------------------------------------------------
 205
 206 class WXDLLIMPEXP_BASE wxVariantDataLong: public wxVariantData
 207 {
 208 DECLARE_DYNAMIC_CLASS(wxVariantDataLong)
 209 public:
 210     wxVariantDataLong() { m_value = 0; }
 211     wxVariantDataLong(long value) { m_value = value; }
 212
 213     inline long GetValue() const { return m_value; }
 214     inline void SetValue(long value) { m_value = value; }
 215
 216     virtual bool Eq(wxVariantData& data) const;
 217
 218     virtual bool Read(wxString& str);
 219     virtual bool Write(wxString& str) const;
 220 #if wxUSE_STD_IOSTREAM
 221     virtual bool Read(wxSTD istream& str);
 222     virtual bool Write(wxSTD ostream& str) const;
 223 #endif
 224 #if wxUSE_STREAMS
 225     virtual bool Read(wxInputStream& str);
 226     virtual bool Write(wxOutputStream &str) const;
 227 #endif // wxUSE_STREAMS
 228
 229     virtual wxString GetType() const { return wxT("long"); }
 230
 231 protected:
 232     long m_value;
 233 };
 234
 235 IMPLEMENT_DYNAMIC_CLASS(wxVariantDataLong, wxVariantData)
 236
 237 bool wxVariantDataLong::Eq(wxVariantData& data) const
 238 {
 239     wxASSERT_MSG( (data.GetType() == wxT("long")), wxT("wxVariantDataLong::Eq: argument mismatch") );
 240
 241     wxVariantDataLong& otherData = (wxVariantDataLong&) data;
 242
 243     return (otherData.m_value == m_value);
 244 }
 245
 246 #if wxUSE_STD_IOSTREAM
 247 bool wxVariantDataLong::Write(wxSTD ostream& str) const
 248 {
 249     wxString s;
 250     Write(s);
 251     str << (const char*) s.mb_str();
 252     return true;
 253 }
 254 #endif
 255
 256 bool wxVariantDataLong::Write(wxString& str) const
 257 {
 258     str.Printf(wxT("%ld"), m_value);
 259     return true;
 260 }
 261
 262 #if wxUSE_STD_IOSTREAM
 263 bool wxVariantDataLong::Read(wxSTD istream& str)
 264 {
 265     str >> m_value;
 266     return true;
 267 }
 268 #endif
 269
 270 #if wxUSE_STREAMS
 271 bool wxVariantDataLong::Write(wxOutputStream& str) const
 272 {
 273     wxTextOutputStream s(str);
 274
 275     s.Write32((size_t)m_value);
 276     return true;
 277 }
 278
 279 bool wxVariantDataLong::Read(wxInputStream& str)
 280 {
 281    wxTextInputStream s(str);
 282    m_value = s.Read32();
 283    return true;
 284 }
 285 #endif // wxUSE_STREAMS
 286
 287 bool wxVariantDataLong::Read(wxString& str)
 288 {
 289     m_value = wxAtol(str);
 290     return true;
 291 }
 292
 293 // wxVariant
 294
 295 wxVariant::wxVariant(long val, const wxString& name)
 296 {
 297     m_data = new wxVariantDataLong(val);
 298     m_name = name;
 299 }
 300
 301 wxVariant::wxVariant(int val, const wxString& name)
 302 {
 303     m_data = new wxVariantDataLong((long)val);
 304     m_name = name;
 305 }
 306
 307 wxVariant::wxVariant(short val, const wxString& name)
 308 {
 309     m_data = new wxVariantDataLong((long)val);
 310     m_name = name;
 311 }
 312
 313 bool wxVariant::operator== (long value) const
 314 {
 315     long thisValue;
 316     if (!Convert(&thisValue))
 317         return false;
 318     else
 319         return (value == thisValue);
 320 }
 321
 322 bool wxVariant::operator!= (long value) const
 323 {
 324     return (!((*this) == value));
 325 }
 326
 327 void wxVariant::operator= (long value)
 328 {
 329     if (GetType() == wxT("long") &&
 330         m_data->GetRefCount() == 1)
 331     {
 332         ((wxVariantDataLong*)GetData())->SetValue(value);
 333     }
 334     else
 335     {
 336         UnRef();
 337         m_data = new wxVariantDataLong(value);
 338     }
 339 }
 340
 341 long wxVariant::GetLong() const
 342 {
 343     long value;
 344     if (Convert(& value))
 345         return value;
 346     else
 347     {
 348         wxFAIL_MSG(wxT("Could not convert to a long"));
 349         return 0;
 350     }
 351 }
 352
 353 // -----------------------------------------------------------------
 354 // wxVariantDoubleData
 355 // -----------------------------------------------------------------
 356
 357 class WXDLLIMPEXP_BASE wxVariantDoubleData: public wxVariantData
 358 {
 359 DECLARE_DYNAMIC_CLASS(wxVariantDoubleData)
 360 public:
 361     wxVariantDoubleData() { m_value = 0.0; }
 362     wxVariantDoubleData(double value) { m_value = value; }
 363
 364     inline double GetValue() const { return m_value; }
 365     inline void SetValue(double value) { m_value = value; }
 366
 367     virtual bool Eq(wxVariantData& data) const;
 368     virtual bool Read(wxString& str);
 369 #if wxUSE_STD_IOSTREAM
 370     virtual bool Write(wxSTD ostream& str) const;
 371 #endif
 372     virtual bool Write(wxString& str) const;
 373 #if wxUSE_STD_IOSTREAM
 374     virtual bool Read(wxSTD istream& str);
 375 #endif
 376 #if wxUSE_STREAMS
 377     virtual bool Read(wxInputStream& str);
 378     virtual bool Write(wxOutputStream &str) const;
 379 #endif // wxUSE_STREAMS
 380     virtual wxString GetType() const { return wxT("double"); }
 381
 382 protected:
 383     double m_value;
 384 };
 385
 386 IMPLEMENT_DYNAMIC_CLASS(wxVariantDoubleData, wxVariantData)
 387
 388 bool wxVariantDoubleData::Eq(wxVariantData& data) const
 389 {
 390     wxASSERT_MSG( (data.GetType() == wxT("double")), wxT("wxVariantDoubleData::Eq: argument mismatch") );
 391
 392     wxVariantDoubleData& otherData = (wxVariantDoubleData&) data;
 393
 394     return wxIsSameDouble(otherData.m_value, m_value);
 395 }
 396
 397 #if wxUSE_STD_IOSTREAM
 398 bool wxVariantDoubleData::Write(wxSTD ostream& str) const
 399 {
 400     wxString s;
 401     Write(s);
 402     str << (const char*) s.mb_str();
 403     return true;
 404 }
 405 #endif
 406
 407 bool wxVariantDoubleData::Write(wxString& str) const
 408 {
 409     str.Printf(wxT("%.14g"), m_value);
 410     return true;
 411 }
 412
 413 #if wxUSE_STD_IOSTREAM
 414 bool wxVariantDoubleData::Read(wxSTD istream& str)
 415 {
 416     str >> m_value;
 417     return true;
 418 }
 419 #endif
 420
 421 #if wxUSE_STREAMS
 422 bool wxVariantDoubleData::Write(wxOutputStream& str) const
 423 {
 424     wxTextOutputStream s(str);
 425     s.WriteDouble((double)m_value);
 426     return true;
 427 }
 428
 429 bool wxVariantDoubleData::Read(wxInputStream& str)
 430 {
 431     wxTextInputStream s(str);
 432     m_value = (float)s.ReadDouble();
 433     return true;
 434 }
 435 #endif // wxUSE_STREAMS
 436
 437 bool wxVariantDoubleData::Read(wxString& str)
 438 {
 439     m_value = wxAtof(str);
 440     return true;
 441 }
 442
 443 //  wxVariant double code
 444
 445 wxVariant::wxVariant(double val, const wxString& name)
 446 {
 447     m_data = new wxVariantDoubleData(val);
 448     m_name = name;
 449 }
 450
 451 bool wxVariant::operator== (double value) const
 452 {
 453     double thisValue;
 454     if (!Convert(&thisValue))
 455         return false;
 456
 457     return wxIsSameDouble(value, thisValue);
 458 }
 459
 460 bool wxVariant::operator!= (double value) const
 461 {
 462     return (!((*this) == value));
 463 }
 464
 465 void wxVariant::operator= (double value)
 466 {
 467     if (GetType() == wxT("double") &&
 468         m_data->GetRefCount() == 1)
 469     {
 470         ((wxVariantDoubleData*)GetData())->SetValue(value);
 471     }
 472     else
 473     {
 474         UnRef();
 475         m_data = new wxVariantDoubleData(value);
 476     }
 477 }
 478
 479 double wxVariant::GetDouble() const
 480 {
 481     double value;
 482     if (Convert(& value))
 483         return value;
 484     else
 485     {
 486         wxFAIL_MSG(wxT("Could not convert to a double number"));
 487         return 0.0;
 488     }
 489 }
 490
 491 // -----------------------------------------------------------------
 492 // wxVariantBoolData
 493 // -----------------------------------------------------------------
 494
 495 #ifdef HAVE_BOOL
 496
 497 class WXDLLIMPEXP_BASE wxVariantDataBool: public wxVariantData
 498 {
 499 DECLARE_DYNAMIC_CLASS(wxVariantDataBool)
 500 public:
 501     wxVariantDataBool() { m_value = 0; }
 502     wxVariantDataBool(bool value) { m_value = value; }
 503
 504     inline bool GetValue() const { return m_value; }
 505     inline void SetValue(bool value) { m_value = value; }
 506
 507     virtual bool Eq(wxVariantData& data) const;
 508 #if wxUSE_STD_IOSTREAM
 509     virtual bool Write(wxSTD ostream& str) const;
 510 #endif
 511     virtual bool Write(wxString& str) const;
 512     virtual bool Read(wxString& str);
 513 #if wxUSE_STD_IOSTREAM
 514     virtual bool Read(wxSTD istream& str);
 515 #endif
 516 #if wxUSE_STREAMS
 517     virtual bool Read(wxInputStream& str);
 518     virtual bool Write(wxOutputStream& str) const;
 519 #endif // wxUSE_STREAMS
 520     virtual wxString GetType() const { return wxT("bool"); }
 521
 522 protected:
 523     bool m_value;
 524 };
 525
 526 IMPLEMENT_DYNAMIC_CLASS(wxVariantDataBool, wxVariantData)
 527
 528 bool wxVariantDataBool::Eq(wxVariantData& data) const
 529 {
 530     wxASSERT_MSG( (data.GetType() == wxT("bool")), wxT("wxVariantDataBool::Eq: argument mismatch") );
 531
 532     wxVariantDataBool& otherData = (wxVariantDataBool&) data;
 533
 534     return (otherData.m_value == m_value);
 535 }
 536
 537 #if wxUSE_STD_IOSTREAM
 538 bool wxVariantDataBool::Write(wxSTD ostream& str) const
 539 {
 540     wxString s;
 541     Write(s);
 542     str << (const char*) s.mb_str();
 543     return true;
 544 }
 545 #endif
 546
 547 bool wxVariantDataBool::Write(wxString& str) const
 548 {
 549     str.Printf(wxT("%d"), (int) m_value);
 550     return true;
 551 }
 552
 553 #if wxUSE_STD_IOSTREAM
 554 bool wxVariantDataBool::Read(wxSTD istream& WXUNUSED(str))
 555 {
 556     wxFAIL_MSG(wxT("Unimplemented"));
 557 //    str >> (long) m_value;
 558     return false;
 559 }
 560 #endif
 561
 562 #if wxUSE_STREAMS
 563 bool wxVariantDataBool::Write(wxOutputStream& str) const
 564 {
 565     wxTextOutputStream s(str);
 566
 567     s.Write8(m_value);
 568     return true;
 569 }
 570
 571 bool wxVariantDataBool::Read(wxInputStream& str)
 572 {
 573     wxTextInputStream s(str);
 574
 575     m_value = s.Read8() != 0;
 576     return true;
 577 }
 578 #endif // wxUSE_STREAMS
 579
 580 bool wxVariantDataBool::Read(wxString& str)
 581 {
 582     m_value = (wxAtol(str) != 0);
 583     return true;
 584 }
 585
 586 // wxVariant ****
 587
 588 wxVariant::wxVariant(bool val, const wxString& name)
 589 {
 590     m_data = new wxVariantDataBool(val);
 591     m_name = name;
 592 }
 593
 594 bool wxVariant::operator== (bool value) const
 595 {
 596     bool thisValue;
 597     if (!Convert(&thisValue))
 598         return false;
 599     else
 600         return (value == thisValue);
 601 }
 602
 603 bool wxVariant::operator!= (bool value) const
 604 {
 605     return (!((*this) == value));
 606 }
 607
 608 void wxVariant::operator= (bool value)
 609 {
 610     if (GetType() == wxT("bool") &&
 611         m_data->GetRefCount() == 1)
 612     {
 613         ((wxVariantDataBool*)GetData())->SetValue(value);
 614     }
 615     else
 616     {
 617         UnRef();
 618         m_data = new wxVariantDataBool(value);
 619     }
 620 }
 621
 622 bool wxVariant::GetBool() const
 623 {
 624     bool value;
 625     if (Convert(& value))
 626         return value;
 627     else
 628     {
 629         wxFAIL_MSG(wxT("Could not convert to a bool"));
 630         return 0;
 631     }
 632 }
 633
 634 #endif // HAVE_BOOL
 635
 636 // -----------------------------------------------------------------
 637 // wxVariantDataChar
 638 // -----------------------------------------------------------------
 639
 640 class WXDLLIMPEXP_BASE wxVariantDataChar: public wxVariantData
 641 {
 642 DECLARE_DYNAMIC_CLASS(wxVariantDataChar)
 643 public:
 644     wxVariantDataChar() { m_value = 0; }
 645     wxVariantDataChar(wxChar value) { m_value = value; }
 646
 647     inline wxChar GetValue() const { return m_value; }
 648     inline void SetValue(wxChar value) { m_value = value; }
 649
 650     virtual bool Eq(wxVariantData& data) const;
 651 #if wxUSE_STD_IOSTREAM
 652     virtual bool Read(wxSTD istream& str);
 653     virtual bool Write(wxSTD ostream& str) const;
 654 #endif
 655     virtual bool Read(wxString& str);
 656     virtual bool Write(wxString& str) const;
 657 #if wxUSE_STREAMS
 658     virtual bool Read(wxInputStream& str);
 659     virtual bool Write(wxOutputStream& str) const;
 660 #endif // wxUSE_STREAMS
 661     virtual wxString GetType() const { return wxT("char"); }
 662
 663 protected:
 664     wxChar m_value;
 665 };
 666
 667 IMPLEMENT_DYNAMIC_CLASS(wxVariantDataChar, wxVariantData)
 668
 669 bool wxVariantDataChar::Eq(wxVariantData& data) const
 670 {
 671     wxASSERT_MSG( (data.GetType() == wxT("char")), wxT("wxVariantDataChar::Eq: argument mismatch") );
 672
 673     wxVariantDataChar& otherData = (wxVariantDataChar&) data;
 674
 675     return (otherData.m_value == m_value);
 676 }
 677
 678 #if wxUSE_STD_IOSTREAM
 679 bool wxVariantDataChar::Write(wxSTD ostream& str) const
 680 {
 681     wxString s;
 682     Write(s);
 683     str << (const char*) s.mb_str();
 684     return true;
 685 }
 686 #endif
 687
 688 bool wxVariantDataChar::Write(wxString& str) const
 689 {
 690     str.Printf(wxT("%c"), m_value);
 691     return true;
 692 }
 693
 694 #if wxUSE_STD_IOSTREAM
 695 bool wxVariantDataChar::Read(wxSTD istream& WXUNUSED(str))
 696 {
 697     wxFAIL_MSG(wxT("Unimplemented"));
 698
 699     return false;
 700 }
 701 #endif
 702
 703 #if wxUSE_STREAMS
 704 bool wxVariantDataChar::Write(wxOutputStream& str) const
 705 {
 706     wxTextOutputStream s(str);
 707
 708     s << m_value;
 709
 710     return true;
 711 }
 712
 713 bool wxVariantDataChar::Read(wxInputStream& str)
 714 {
 715     wxTextInputStream s(str);
 716
 717     s >> m_value;
 718
 719     return true;
 720 }
 721 #endif // wxUSE_STREAMS
 722
 723 bool wxVariantDataChar::Read(wxString& str)
 724 {
 725     m_value = str[size_t(0)];
 726     return true;
 727 }
 728
 729 wxVariant::wxVariant(wxChar val, const wxString& name)
 730 {
 731     m_data = new wxVariantDataChar(val);
 732     m_name = name;
 733 }
 734
 735 bool wxVariant::operator== (wxChar value) const
 736 {
 737     wxChar thisValue;
 738     if (!Convert(&thisValue))
 739         return false;
 740     else
 741         return (value == thisValue);
 742 }
 743
 744 bool wxVariant::operator!= (wxChar value) const
 745 {
 746     return (!((*this) == value));
 747 }
 748
 749 void wxVariant::operator= (wxChar value)
 750 {
 751     if (GetType() == wxT("char") &&
 752         m_data->GetRefCount() == 1)
 753     {
 754         ((wxVariantDataChar*)GetData())->SetValue(value);
 755     }
 756     else
 757     {
 758         UnRef();
 759         m_data = new wxVariantDataChar(value);
 760     }
 761 }
 762
 763 wxChar wxVariant::GetChar() const
 764 {
 765     wxChar value;
 766     if (Convert(& value))
 767         return value;
 768     else
 769     {
 770         wxFAIL_MSG(wxT("Could not convert to a char"));
 771         return 0;
 772     }
 773 }
 774
 775 // ----------------------------------------------------------------------------
 776 // wxVariantDataString
 777 // ----------------------------------------------------------------------------
 778
 779 class WXDLLIMPEXP_BASE wxVariantDataString: public wxVariantData
 780 {
 781 DECLARE_DYNAMIC_CLASS(wxVariantDataString)
 782 public:
 783     wxVariantDataString() { }
 784     wxVariantDataString(const wxString& value) { m_value = value; }
 785
 786     inline wxString GetValue() const { return m_value; }
 787     inline void SetValue(const wxString& value) { m_value = value; }
 788
 789     virtual bool Eq(wxVariantData& data) const;
 790 #if wxUSE_STD_IOSTREAM
 791     virtual bool Write(wxSTD ostream& str) const;
 792 #endif
 793     virtual bool Read(wxString& str);
 794     virtual bool Write(wxString& str) const;
 795 #if wxUSE_STD_IOSTREAM
 796     virtual bool Read(wxSTD istream& WXUNUSED(str)) { return false; }
 797 #endif
 798 #if wxUSE_STREAMS
 799     virtual bool Read(wxInputStream& str);
 800     virtual bool Write(wxOutputStream& str) const;
 801 #endif // wxUSE_STREAMS
 802     virtual wxString GetType() const { return wxT("string"); }
 803
 804 protected:
 805     wxString m_value;
 806 };
 807
 808 bool wxVariantDataString::Eq(wxVariantData& data) const
 809 {
 810     wxASSERT_MSG( (data.GetType() == wxT("string")), wxT("wxVariantDataString::Eq: argument mismatch") );
 811
 812     wxVariantDataString& otherData = (wxVariantDataString&) data;
 813
 814     return (otherData.m_value == m_value);
 815 }
 816
 817 #if wxUSE_STD_IOSTREAM
 818 bool wxVariantDataString::Write(wxSTD ostream& str) const
 819 {
 820     str << (const char*) m_value.mb_str();
 821     return true;
 822 }
 823 #endif
 824
 825 bool wxVariantDataString::Write(wxString& str) const
 826 {
 827     str = m_value;
 828     return true;
 829 }
 830
 831 #if wxUSE_STREAMS
 832 bool wxVariantDataString::Write(wxOutputStream& str) const
 833 {
 834   // why doesn't wxOutputStream::operator<< take "const wxString&"
 835     wxTextOutputStream s(str);
 836     s.WriteString(m_value);
 837     return true;
 838 }
 839
 840 bool wxVariantDataString::Read(wxInputStream& str)
 841 {
 842     wxTextInputStream s(str);
 843
 844     m_value = s.ReadLine();
 845     return true;
 846 }
 847 #endif // wxUSE_STREAMS
 848
 849 bool wxVariantDataString::Read(wxString& str)
 850 {
 851     m_value = str;
 852     return true;
 853 }
 854
 855 IMPLEMENT_DYNAMIC_CLASS(wxVariantDataString, wxVariantData)
 856
 857 // wxVariant ****
 858
 859 wxVariant::wxVariant(const wxString& val, const wxString& name)
 860 {
 861     m_data = new wxVariantDataString(val);
 862     m_name = name;
 863 }
 864
 865 wxVariant::wxVariant(const wxChar* val, const wxString& name)
 866 {
 867     m_data = new wxVariantDataString(wxString(val));
 868     m_name = name;
 869 }
 870
 871 bool wxVariant::operator== (const wxString& value) const
 872 {
 873     wxString thisValue;
 874     if (!Convert(&thisValue))
 875         return false;
 876
 877     return value == thisValue;
 878 }
 879
 880 bool wxVariant::operator!= (const wxString& value) const
 881 {
 882     return (!((*this) == value));
 883 }
 884
 885 void wxVariant::operator= (const wxString& value)
 886 {
 887     if (GetType() == wxT("string") &&
 888         m_data->GetRefCount() == 1)
 889     {
 890         ((wxVariantDataString*)GetData())->SetValue(value);
 891     }
 892     else
 893     {
 894         UnRef();
 895         m_data = new wxVariantDataString(value);
 896     }
 897 }
 898
 899 void wxVariant::operator= (const wxChar* value)
 900 {
 901     if (GetType() == wxT("string") &&
 902         m_data->GetRefCount() == 1)
 903     {
 904         ((wxVariantDataString*)GetData())->SetValue(wxString(value));
 905     }
 906     else
 907     {
 908         UnRef();
 909         m_data = new wxVariantDataString(wxString(value));
 910     }
 911 }
 912
 913 wxString wxVariant::GetString() const
 914 {
 915     wxString value;
 916     if (!Convert(& value))
 917     {
 918         wxFAIL_MSG(wxT("Could not convert to a string"));
 919     }
 920
 921     return value;
 922 }
 923
 924 // ----------------------------------------------------------------------------
 925 // wxVariantDataWxObjectPtr
 926 // ----------------------------------------------------------------------------
 927
 928 class wxVariantDataWxObjectPtr: public wxVariantData
 929 {
 930 DECLARE_DYNAMIC_CLASS(wxVariantDataWxObjectPtr)
 931 public:
 932     wxVariantDataWxObjectPtr() { }
 933     wxVariantDataWxObjectPtr(wxObject* value) { m_value = value; }
 934
 935     inline wxObject* GetValue() const { return m_value; }
 936     inline void SetValue(wxObject* value) { m_value = value; }
 937
 938     virtual bool Eq(wxVariantData& data) const;
 939 #if wxUSE_STD_IOSTREAM
 940     virtual bool Write(wxSTD ostream& str) const;
 941 #endif
 942     virtual bool Write(wxString& str) const;
 943 #if wxUSE_STD_IOSTREAM
 944     virtual bool Read(wxSTD istream& str);
 945 #endif
 946     virtual bool Read(wxString& str);
 947     virtual wxString GetType() const ;
 948     virtual wxVariantData* Clone() { return new wxVariantDataWxObjectPtr; }
 949
 950     virtual wxClassInfo* GetValueClassInfo() ;
 951 protected:
 952     wxObject* m_value;
 953
 954     DECLARE_NO_COPY_CLASS(wxVariantDataWxObjectPtr)
 955 };
 956
 957 IMPLEMENT_DYNAMIC_CLASS(wxVariantDataWxObjectPtr, wxVariantData)
 958
 959 bool wxVariantDataWxObjectPtr::Eq(wxVariantData& data) const
 960 {
 961     wxASSERT_MSG(   wxIsKindOf((&data), wxVariantDataWxObjectPtr), wxT("wxVariantDataWxObjectPtr::Eq: argument mismatch") );
 962
 963     wxVariantDataWxObjectPtr& otherData = (wxVariantDataWxObjectPtr&) data;
 964
 965     return (otherData.m_value == m_value);
 966 }
 967
 968 wxString wxVariantDataWxObjectPtr::GetType() const
 969 {
 970     wxString returnVal(wxT("wxObject"));
 971     if (m_value) {
 972         returnVal = m_value->GetClassInfo()->GetClassName();
 973     }
 974     return returnVal;
 975 }
 976
 977 wxClassInfo* wxVariantDataWxObjectPtr::GetValueClassInfo()
 978 {
 979     wxClassInfo* returnVal=NULL;
 980
 981     if (m_value) returnVal = m_value->GetClassInfo();
 982
 983     return returnVal;
 984 }
 985
 986 #if wxUSE_STD_IOSTREAM
 987 bool wxVariantDataWxObjectPtr::Write(wxSTD ostream& str) const
 988 {
 989     wxString s;
 990     Write(s);
 991     str << (const char*) s.mb_str();
 992     return true;
 993 }
 994 #endif
 995
 996 bool wxVariantDataWxObjectPtr::Write(wxString& str) const
 997 {
 998     str.Printf(wxT("%s(%p)"), GetType().c_str(), wx_static_cast(void*, m_value));
 999     return true;
1000 }
1001
1002 #if wxUSE_STD_IOSTREAM
1003 bool wxVariantDataWxObjectPtr::Read(wxSTD istream& WXUNUSED(str))
1004 {
1005     // Not implemented
1006     return false;
1007 }
1008 #endif
1009
1010 bool wxVariantDataWxObjectPtr::Read(wxString& WXUNUSED(str))
1011 {
1012     // Not implemented
1013     return false;
1014 }
1015
1016 // wxVariant
1017
1018 wxVariant::wxVariant( wxObject* val, const wxString& name)
1019 {
1020     m_data = new wxVariantDataWxObjectPtr(val);
1021     m_name = name;
1022 }
1023
1024 bool wxVariant::operator== (wxObject* value) const
1025 {
1026     return (value == ((wxVariantDataWxObjectPtr*)GetData())->GetValue());
1027 }
1028
1029 bool wxVariant::operator!= (wxObject* value) const
1030 {
1031     return (!((*this) == (wxObject*) value));
1032 }
1033
1034 void wxVariant::operator= (wxObject* value)
1035 {
1036     UnRef();
1037     m_data = new wxVariantDataWxObjectPtr(value);
1038 }
1039
1040 wxObject* wxVariant::GetWxObjectPtr() const
1041 {
1042     wxASSERT(wxIsKindOf(GetData(), wxVariantDataWxObjectPtr));
1043     return (wxObject*) ((wxVariantDataWxObjectPtr*) m_data)->GetValue();
1044 }
1045
1046 // ----------------------------------------------------------------------------
1047 // wxVariantDataVoidPtr
1048 // ----------------------------------------------------------------------------
1049
1050 class wxVariantDataVoidPtr: public wxVariantData
1051 {
1052 DECLARE_DYNAMIC_CLASS(wxVariantDataVoidPtr)
1053 public:
1054     wxVariantDataVoidPtr() { }
1055     wxVariantDataVoidPtr(void* value) { m_value = value; }
1056
1057     inline void* GetValue() const { return m_value; }
1058     inline void SetValue(void* value) { m_value = value; }
1059
1060     virtual bool Eq(wxVariantData& data) const;
1061 #if wxUSE_STD_IOSTREAM
1062     virtual bool Write(wxSTD ostream& str) const;
1063 #endif
1064     virtual bool Write(wxString& str) const;
1065 #if wxUSE_STD_IOSTREAM
1066     virtual bool Read(wxSTD istream& str);
1067 #endif
1068     virtual bool Read(wxString& str);
1069     virtual wxString GetType() const { return wxT("void*"); }
1070     virtual wxVariantData* Clone() { return new wxVariantDataVoidPtr; }
1071
1072 protected:
1073     void* m_value;
1074
1075     DECLARE_NO_COPY_CLASS(wxVariantDataVoidPtr)
1076 };
1077
1078 IMPLEMENT_DYNAMIC_CLASS(wxVariantDataVoidPtr, wxVariantData)
1079
1080 bool wxVariantDataVoidPtr::Eq(wxVariantData& data) const
1081 {
1082     wxASSERT_MSG( (data.GetType() == wxT("void*")), wxT("wxVariantDataVoidPtr::Eq: argument mismatch") );
1083
1084     wxVariantDataVoidPtr& otherData = (wxVariantDataVoidPtr&) data;
1085
1086     return (otherData.m_value == m_value);
1087 }
1088
1089 #if wxUSE_STD_IOSTREAM
1090 bool wxVariantDataVoidPtr::Write(wxSTD ostream& str) const
1091 {
1092     wxString s;
1093     Write(s);
1094     str << (const char*) s.mb_str();
1095     return true;
1096 }
1097 #endif
1098
1099 bool wxVariantDataVoidPtr::Write(wxString& str) const
1100 {
1101     str.Printf(wxT("%p"), m_value);
1102     return true;
1103 }
1104
1105 #if wxUSE_STD_IOSTREAM
1106 bool wxVariantDataVoidPtr::Read(wxSTD istream& WXUNUSED(str))
1107 {
1108     // Not implemented
1109     return false;
1110 }
1111 #endif
1112
1113 bool wxVariantDataVoidPtr::Read(wxString& WXUNUSED(str))
1114 {
1115     // Not implemented
1116     return false;
1117 }
1118
1119 // wxVariant
1120
1121 wxVariant::wxVariant( void* val, const wxString& name)
1122 {
1123     m_data = new wxVariantDataVoidPtr(val);
1124     m_name = name;
1125 }
1126
1127 bool wxVariant::operator== (void* value) const
1128 {
1129     return (value == ((wxVariantDataVoidPtr*)GetData())->GetValue());
1130 }
1131
1132 bool wxVariant::operator!= (void* value) const
1133 {
1134     return (!((*this) == (void*) value));
1135 }
1136
1137 void wxVariant::operator= (void* value)
1138 {
1139     if (GetType() == wxT("void*") &&
1140         m_data->GetRefCount() == 1)
1141     {
1142         ((wxVariantDataVoidPtr*)GetData())->SetValue(value);
1143     }
1144     else
1145     {
1146         UnRef();
1147         m_data = new wxVariantDataVoidPtr(value);
1148     }
1149 }
1150
1151 void* wxVariant::GetVoidPtr() const
1152 {
1153     wxASSERT( (GetType() == wxT("void*")) );
1154
1155     return (void*) ((wxVariantDataVoidPtr*) m_data)->GetValue();
1156 }
1157
1158 // ----------------------------------------------------------------------------
1159 // wxVariantDataDateTime
1160 // ----------------------------------------------------------------------------
1161
1162 #if wxUSE_DATETIME
1163
1164 class wxVariantDataDateTime: public wxVariantData
1165 {
1166     DECLARE_DYNAMIC_CLASS(wxVariantDataDateTime)
1167
1168 public:
1169     wxVariantDataDateTime() { }
1170     wxVariantDataDateTime(const wxDateTime& value) { m_value = value; }
1171 #if wxUSE_ODBC
1172     wxVariantDataDateTime(const TIME_STRUCT* valptr)
1173         { m_value = wxDateTime(valptr->hour, valptr->minute, valptr->second); }
1174     wxVariantDataDateTime(const DATE_STRUCT* valptr)
1175         { m_value = wxDateTime(valptr->day, (wxDateTime::Month) (valptr->month - 1),valptr->year); }
1176     wxVariantDataDateTime(const TIMESTAMP_STRUCT* valptr)
1177         { m_value = wxDateTime(valptr->day, (wxDateTime::Month) (valptr->month - 1), valptr->year,
1178                         valptr->hour, valptr->minute, valptr->second, (wxDateTime::wxDateTime_t)valptr->fraction ); }
1179 #endif //ODBC
1180
1181     inline wxDateTime GetValue() const { return m_value; }
1182     inline void SetValue(const wxDateTime& value) { m_value = value; }
1183
1184     virtual bool Eq(wxVariantData& data) const;
1185 #if wxUSE_STD_IOSTREAM
1186     virtual bool Write(wxSTD ostream& str) const;
1187 #endif
1188     virtual bool Write(wxString& str) const;
1189 #if wxUSE_STD_IOSTREAM
1190     virtual bool Read(wxSTD istream& str);
1191 #endif
1192     virtual bool Read(wxString& str);
1193     virtual wxString GetType() const { return wxT("datetime"); }
1194     virtual wxVariantData* Clone() { return new wxVariantDataDateTime; }
1195
1196 protected:
1197     wxDateTime m_value;
1198 };
1199
1200
1201 IMPLEMENT_DYNAMIC_CLASS(wxVariantDataDateTime, wxVariantData)
1202
1203 bool wxVariantDataDateTime::Eq(wxVariantData& data) const
1204 {
1205     wxASSERT_MSG( (data.GetType() == wxT("datetime")), wxT("wxVariantDataDateTime::Eq: argument mismatch") );
1206
1207     wxVariantDataDateTime& otherData = (wxVariantDataDateTime&) data;
1208
1209     return (otherData.m_value == m_value);
1210 }
1211
1212
1213 #if wxUSE_STD_IOSTREAM
1214 bool wxVariantDataDateTime::Write(wxSTD ostream& str) const
1215 {
1216     wxString value;
1217     Write( value );
1218     str << value.c_str();
1219     return true;
1220 }
1221 #endif
1222
1223
1224 bool wxVariantDataDateTime::Write(wxString& str) const
1225 {
1226     str = m_value.Format();
1227     return true;
1228 }
1229
1230
1231 #if wxUSE_STD_IOSTREAM
1232 bool wxVariantDataDateTime::Read(wxSTD istream& WXUNUSED(str))
1233 {
1234     // Not implemented
1235     return false;
1236 }
1237 #endif
1238
1239
1240 bool wxVariantDataDateTime::Read(wxString& str)
1241 {
1242     if(! m_value.ParseDateTime(str.c_str()/*FIXME-UTF8*/))
1243         return false;
1244     return true;
1245 }
1246
1247 // wxVariant
1248
1249 wxVariant::wxVariant(const wxDateTime& val, const wxString& name) // Date
1250 {
1251     m_data = new wxVariantDataDateTime(val);
1252     m_name = name;
1253 }
1254
1255 #if wxUSE_ODBC
1256 wxVariant::wxVariant(const TIME_STRUCT* valptr, const wxString& name) // Date
1257 {
1258     m_data = new wxVariantDataDateTime(valptr);
1259     m_name = name;
1260 }
1261
1262 wxVariant::wxVariant(const TIMESTAMP_STRUCT* valptr, const wxString& name) // Date
1263 {
1264     m_data = new wxVariantDataDateTime(valptr);
1265     m_name = name;
1266 }
1267
1268 wxVariant::wxVariant(const DATE_STRUCT* valptr, const wxString& name) // Date
1269 {
1270     m_data = new wxVariantDataDateTime(valptr);
1271     m_name = name;
1272 }
1273 #endif // wxUSE_ODBC
1274
1275 bool wxVariant::operator== (const wxDateTime& value) const
1276 {
1277     wxDateTime thisValue;
1278     if (!Convert(&thisValue))
1279         return false;
1280
1281     return value.IsEqualTo(thisValue);
1282 }
1283
1284 bool wxVariant::operator!= (const wxDateTime& value) const
1285 {
1286     return (!((*this) == value));
1287 }
1288
1289 void wxVariant::operator= (const wxDateTime& value)
1290 {
1291     if (GetType() == wxT("datetime") &&
1292         m_data->GetRefCount() == 1)
1293     {
1294         ((wxVariantDataDateTime*)GetData())->SetValue(value);
1295     }
1296     else
1297     {
1298         UnRef();
1299         m_data = new wxVariantDataDateTime(value);
1300     }
1301 }
1302
1303 #if wxUSE_ODBC
1304 void wxVariant::operator= (const DATE_STRUCT* value)
1305 {
1306     UnRef();
1307     m_data = new wxVariantDataDateTime(value);
1308 }
1309
1310 void wxVariant::operator= (const TIME_STRUCT* value)
1311 {
1312     UnRef();
1313     m_data = new wxVariantDataDateTime(value);
1314 }
1315
1316 void wxVariant::operator= (const TIMESTAMP_STRUCT* value)
1317 {
1318     UnRef();
1319     m_data = new wxVariantDataDateTime(value);
1320 }
1321
1322 #endif // wxUSE_ODBC
1323
1324 wxDateTime wxVariant::GetDateTime() const
1325 {
1326     wxDateTime value;
1327     if (!Convert(& value))
1328     {
1329         wxFAIL_MSG(wxT("Could not convert to a datetime"));
1330     }
1331
1332     return value;
1333 }
1334
1335 #endif // wxUSE_DATETIME
1336
1337 // ----------------------------------------------------------------------------
1338 // wxVariantDataArrayString
1339 // ----------------------------------------------------------------------------
1340
1341 class wxVariantDataArrayString: public wxVariantData
1342 {
1343 public:
1344     wxVariantDataArrayString() { }
1345     wxVariantDataArrayString(const wxArrayString& value) { m_value = value; }
1346
1347     wxArrayString GetValue() const { return m_value; }
1348     void SetValue(const wxArrayString& value) { m_value = value; }
1349
1350     virtual bool Eq(wxVariantData& data) const;
1351 #if wxUSE_STD_IOSTREAM
1352     virtual bool Write(wxSTD ostream& str) const;
1353 #endif
1354     virtual bool Write(wxString& str) const;
1355 #if wxUSE_STD_IOSTREAM
1356     virtual bool Read(wxSTD istream& str);
1357 #endif
1358     virtual bool Read(wxString& str);
1359     virtual wxString GetType() const { return wxT("arrstring"); }
1360     virtual wxVariantData* Clone() { return new wxVariantDataArrayString; }
1361
1362 protected:
1363     wxArrayString m_value;
1364
1365     DECLARE_DYNAMIC_CLASS(wxVariantDataArrayString)
1366 };
1367
1368 IMPLEMENT_DYNAMIC_CLASS(wxVariantDataArrayString, wxVariantData)
1369
1370 bool wxVariantDataArrayString::Eq(wxVariantData& data) const
1371 {
1372     wxASSERT_MSG( data.GetType() == GetType(), wxT("wxVariantDataArrayString::Eq: argument mismatch") );
1373
1374     wxVariantDataArrayString& otherData = (wxVariantDataArrayString&) data;
1375
1376     return otherData.m_value == m_value;
1377 }
1378
1379 #if wxUSE_STD_IOSTREAM
1380 bool wxVariantDataArrayString::Write(wxSTD ostream& WXUNUSED(str)) const
1381 {
1382     // Not implemented
1383     return false;
1384 }
1385 #endif
1386
1387 bool wxVariantDataArrayString::Write(wxString& str) const
1388 {
1389     size_t count = m_value.GetCount();
1390     for ( size_t n = 0; n < count; n++ )
1391     {
1392         if ( n )
1393             str += _T(';');
1394
1395         str += m_value[n];
1396     }
1397
1398     return true;
1399 }
1400
1401
1402 #if wxUSE_STD_IOSTREAM
1403 bool wxVariantDataArrayString::Read(wxSTD istream& WXUNUSED(str))
1404 {
1405     // Not implemented
1406     return false;
1407 }
1408 #endif
1409
1410
1411 bool wxVariantDataArrayString::Read(wxString& str)
1412 {
1413     wxStringTokenizer tk(str, _T(";"));
1414     while ( tk.HasMoreTokens() )
1415     {
1416         m_value.Add(tk.GetNextToken());
1417     }
1418
1419     return true;
1420 }
1421
1422 // wxVariant
1423
1424 wxVariant::wxVariant(const wxArrayString& val, const wxString& name) // Strings
1425 {
1426     m_data = new wxVariantDataArrayString(val);
1427     m_name = name;
1428 }
1429
1430 bool wxVariant::operator==(const wxArrayString& WXUNUSED(value)) const
1431 {
1432     wxFAIL_MSG( _T("TODO") );
1433
1434     return false;
1435 }
1436
1437 bool wxVariant::operator!=(const wxArrayString& value) const
1438 {
1439     return !(*this == value);
1440 }
1441
1442 void wxVariant::operator=(const wxArrayString& value)
1443 {
1444     if (GetType() == wxT("arrstring") &&
1445         m_data->GetRefCount() == 1)
1446     {
1447         ((wxVariantDataArrayString *)GetData())->SetValue(value);
1448     }
1449     else
1450     {
1451         UnRef();
1452         m_data = new wxVariantDataArrayString(value);
1453     }
1454 }
1455
1456 wxArrayString wxVariant::GetArrayString() const
1457 {
1458     if ( GetType() == wxT("arrstring") )
1459         return ((wxVariantDataArrayString *)GetData())->GetValue();
1460
1461     return wxArrayString();
1462 }
1463
1464 // ----------------------------------------------------------------------------
1465 // wxVariantDataList
1466 // ----------------------------------------------------------------------------
1467
1468 class WXDLLIMPEXP_BASE wxVariantDataList: public wxVariantData
1469 {
1470 DECLARE_DYNAMIC_CLASS(wxVariantDataList)
1471 public:
1472     wxVariantDataList() {}
1473     wxVariantDataList(const wxList& list);
1474     virtual ~wxVariantDataList();
1475
1476     wxList& GetValue() { return m_value; }
1477     void SetValue(const wxList& value) ;
1478
1479     virtual bool Eq(wxVariantData& data) const;
1480 #if wxUSE_STD_IOSTREAM
1481     virtual bool Write(wxSTD ostream& str) const;
1482 #endif
1483     virtual bool Write(wxString& str) const;
1484 #if wxUSE_STD_IOSTREAM
1485     virtual bool Read(wxSTD istream& str);
1486 #endif
1487     virtual bool Read(wxString& str);
1488     virtual wxString GetType() const { return wxT("list"); }
1489
1490     void Clear();
1491
1492 protected:
1493     wxList  m_value;
1494 };
1495
1496 IMPLEMENT_DYNAMIC_CLASS(wxVariantDataList, wxVariantData)
1497
1498 wxVariantDataList::wxVariantDataList(const wxList& list)
1499 {
1500     SetValue(list);
1501 }
1502
1503 wxVariantDataList::~wxVariantDataList()
1504 {
1505     Clear();
1506 }
1507
1508 void wxVariantDataList::SetValue(const wxList& value)
1509 {
1510     Clear();
1511     wxList::compatibility_iterator node = value.GetFirst();
1512     while (node)
1513     {
1514         wxVariant* var = (wxVariant*) node->GetData();
1515         m_value.Append(new wxVariant(*var));
1516         node = node->GetNext();
1517     }
1518 }
1519
1520 void wxVariantDataList::Clear()
1521 {
1522     wxList::compatibility_iterator node = m_value.GetFirst();
1523     while (node)
1524     {
1525         wxVariant* var = (wxVariant*) node->GetData();
1526         delete var;
1527         node = node->GetNext();
1528     }
1529     m_value.Clear();
1530 }
1531
1532 bool wxVariantDataList::Eq(wxVariantData& data) const
1533 {
1534     wxASSERT_MSG( (data.GetType() == wxT("list")), wxT("wxVariantDataList::Eq: argument mismatch") );
1535
1536     wxVariantDataList& listData = (wxVariantDataList&) data;
1537     wxList::compatibility_iterator node1 = m_value.GetFirst();
1538     wxList::compatibility_iterator node2 = listData.GetValue().GetFirst();
1539     while (node1 && node2)
1540     {
1541         wxVariant* var1 = (wxVariant*) node1->GetData();
1542         wxVariant* var2 = (wxVariant*) node2->GetData();
1543         if ((*var1) != (*var2))
1544             return false;
1545         node1 = node1->GetNext();
1546         node2 = node2->GetNext();
1547     }
1548     if (node1 || node2) return false;
1549     return true;
1550 }
1551
1552 #if wxUSE_STD_IOSTREAM
1553 bool wxVariantDataList::Write(wxSTD ostream& str) const
1554 {
1555     wxString s;
1556     Write(s);
1557     str << (const char*) s.mb_str();
1558     return true;
1559 }
1560 #endif
1561
1562 bool wxVariantDataList::Write(wxString& str) const
1563 {
1564     str = wxEmptyString;
1565     wxList::compatibility_iterator node = m_value.GetFirst();
1566     while (node)
1567     {
1568         wxVariant* var = (wxVariant*) node->GetData();
1569         if (node != m_value.GetFirst())
1570           str += wxT(" ");
1571         wxString str1;
1572         str += var->MakeString();
1573         node = node->GetNext();
1574     }
1575
1576     return true;
1577 }
1578
1579 #if wxUSE_STD_IOSTREAM
1580 bool wxVariantDataList::Read(wxSTD istream& WXUNUSED(str))
1581 {
1582     wxFAIL_MSG(wxT("Unimplemented"));
1583     // TODO
1584     return false;
1585 }
1586 #endif
1587
1588 bool wxVariantDataList::Read(wxString& WXUNUSED(str))
1589 {
1590     wxFAIL_MSG(wxT("Unimplemented"));
1591     // TODO
1592     return false;
1593 }
1594
1595 // wxVariant
1596
1597 wxVariant::wxVariant(const wxList& val, const wxString& name) // List of variants
1598 {
1599     m_data = new wxVariantDataList(val);
1600     m_name = name;
1601 }
1602
1603 bool wxVariant::operator== (const wxList& value) const
1604 {
1605     wxASSERT_MSG( (GetType() == wxT("list")), wxT("Invalid type for == operator") );
1606
1607     wxVariantDataList other(value);
1608     return (GetData()->Eq(other));
1609 }
1610
1611 bool wxVariant::operator!= (const wxList& value) const
1612 {
1613     return (!((*this) == value));
1614 }
1615
1616 void wxVariant::operator= (const wxList& value)
1617 {
1618     if (GetType() == wxT("list") &&
1619         m_data->GetRefCount() == 1)
1620     {
1621         ((wxVariantDataList*)GetData())->SetValue(value);
1622     }
1623     else
1624     {
1625         UnRef();
1626         m_data = new wxVariantDataList(value);
1627     }
1628 }
1629
1630 wxList& wxVariant::GetList() const
1631 {
1632     wxASSERT( (GetType() == wxT("list")) );
1633
1634     return (wxList&) ((wxVariantDataList*) m_data)->GetValue();
1635 }
1636
1637 // Make empty list
1638 void wxVariant::NullList()
1639 {
1640     SetData(new wxVariantDataList());
1641 }
1642
1643 // Append to list
1644 void wxVariant::Append(const wxVariant& value)
1645 {
1646     wxList& list = GetList();
1647
1648     list.Append(new wxVariant(value));
1649 }
1650
1651 // Insert at front of list
1652 void wxVariant::Insert(const wxVariant& value)
1653 {
1654     wxList& list = GetList();
1655
1656     list.Insert(new wxVariant(value));
1657 }
1658
1659 // Returns true if the variant is a member of the list
1660 bool wxVariant::Member(const wxVariant& value) const
1661 {
1662     wxList& list = GetList();
1663
1664     wxList::compatibility_iterator node = list.GetFirst();
1665     while (node)
1666     {
1667         wxVariant* other = (wxVariant*) node->GetData();
1668         if (value == *other)
1669             return true;
1670         node = node->GetNext();
1671     }
1672     return false;
1673 }
1674
1675 // Deletes the nth element of the list
1676 bool wxVariant::Delete(size_t item)
1677 {
1678     wxList& list = GetList();
1679
1680     wxASSERT_MSG( (item < list.GetCount()), wxT("Invalid index to Delete") );
1681     wxList::compatibility_iterator node = list.Item(item);
1682     wxVariant* variant = (wxVariant*) node->GetData();
1683     delete variant;
1684     list.Erase(node);
1685     return true;
1686 }
1687
1688 // Clear list
1689 void wxVariant::ClearList()
1690 {
1691     if (!IsNull() && (GetType() == wxT("list")))
1692     {
1693         ((wxVariantDataList*) m_data)->Clear();
1694     }
1695     else
1696     {
1697         if (!GetType().IsSameAs(wxT("list")))
1698             UnRef();
1699
1700         m_data = new wxVariantDataList;
1701     }
1702 }
1703
1704 // Treat a list variant as an array
1705 wxVariant wxVariant::operator[] (size_t idx) const
1706 {
1707     wxASSERT_MSG( GetType() == wxT("list"), wxT("Invalid type for array operator") );
1708
1709     if (GetType() == wxT("list"))
1710     {
1711         wxVariantDataList* data = (wxVariantDataList*) m_data;
1712         wxASSERT_MSG( (idx < data->GetValue().GetCount()), wxT("Invalid index for array") );
1713         return * (wxVariant*) (data->GetValue().Item(idx)->GetData());
1714     }
1715     return wxNullVariant;
1716 }
1717
1718 wxVariant& wxVariant::operator[] (size_t idx)
1719 {
1720     // We can't return a reference to a variant for a string list, since the string
1721     // is actually stored as a char*, not a variant.
1722
1723     wxASSERT_MSG( (GetType() == wxT("list")), wxT("Invalid type for array operator") );
1724
1725     wxVariantDataList* data = (wxVariantDataList*) m_data;
1726     wxASSERT_MSG( (idx < data->GetValue().GetCount()), wxT("Invalid index for array") );
1727
1728     return * (wxVariant*) (data->GetValue().Item(idx)->GetData());
1729 }
1730
1731 // Return the number of elements in a list
1732 size_t wxVariant::GetCount() const
1733 {
1734     wxASSERT_MSG( GetType() == wxT("list"), wxT("Invalid type for GetCount()") );
1735
1736     if (GetType() == wxT("list"))
1737     {
1738         wxVariantDataList* data = (wxVariantDataList*) m_data;
1739         return data->GetValue().GetCount();
1740     }
1741     return 0;
1742 }
1743
1744 // ----------------------------------------------------------------------------
1745 // Type conversion
1746 // ----------------------------------------------------------------------------
1747
1748 bool wxVariant::Convert(long* value) const
1749 {
1750     wxString type(GetType());
1751     if (type == wxT("double"))
1752         *value = (long) (((wxVariantDoubleData*)GetData())->GetValue());
1753     else if (type == wxT("long"))
1754         *value = ((wxVariantDataLong*)GetData())->GetValue();
1755 #ifdef HAVE_BOOL
1756     else if (type == wxT("bool"))
1757         *value = (long) (((wxVariantDataBool*)GetData())->GetValue());
1758 #endif
1759     else if (type == wxT("string"))
1760         *value = wxAtol(((wxVariantDataString*)GetData())->GetValue());
1761     else
1762         return false;
1763
1764     return true;
1765 }
1766
1767 bool wxVariant::Convert(bool* value) const
1768 {
1769     wxString type(GetType());
1770     if (type == wxT("double"))
1771         *value = ((int) (((wxVariantDoubleData*)GetData())->GetValue()) != 0);
1772     else if (type == wxT("long"))
1773         *value = (((wxVariantDataLong*)GetData())->GetValue() != 0);
1774 #ifdef HAVE_BOOL
1775     else if (type == wxT("bool"))
1776         *value = ((wxVariantDataBool*)GetData())->GetValue();
1777 #endif
1778     else if (type == wxT("string"))
1779     {
1780         wxString val(((wxVariantDataString*)GetData())->GetValue());
1781         val.MakeLower();
1782         if (val == wxT("true") || val == wxT("yes") || val == wxT('1') )
1783             *value = true;
1784         else if (val == wxT("false") || val == wxT("no") || val == wxT('0') )
1785             *value = false;
1786         else
1787             return false;
1788     }
1789     else
1790         return false;
1791
1792     return true;
1793 }
1794
1795 bool wxVariant::Convert(double* value) const
1796 {
1797     wxString type(GetType());
1798     if (type == wxT("double"))
1799         *value = ((wxVariantDoubleData*)GetData())->GetValue();
1800     else if (type == wxT("long"))
1801         *value = (double) (((wxVariantDataLong*)GetData())->GetValue());
1802 #ifdef HAVE_BOOL
1803     else if (type == wxT("bool"))
1804         *value = (double) (((wxVariantDataBool*)GetData())->GetValue());
1805 #endif
1806     else if (type == wxT("string"))
1807         *value = (double) wxAtof(((wxVariantDataString*)GetData())->GetValue());
1808     else
1809         return false;
1810
1811     return true;
1812 }
1813
1814 bool wxVariant::Convert(wxChar* value) const
1815 {
1816     wxString type(GetType());
1817     if (type == wxT("char"))
1818         *value = ((wxVariantDataChar*)GetData())->GetValue();
1819     else if (type == wxT("long"))
1820         *value = (char) (((wxVariantDataLong*)GetData())->GetValue());
1821 #ifdef HAVE_BOOL
1822     else if (type == wxT("bool"))
1823         *value = (char) (((wxVariantDataBool*)GetData())->GetValue());
1824 #endif
1825     else
1826         return false;
1827
1828     return true;
1829 }
1830
1831 bool wxVariant::Convert(wxString* value) const
1832 {
1833     *value = MakeString();
1834     return true;
1835 }
1836
1837 #if wxUSE_DATETIME
1838 bool wxVariant::Convert(wxDateTime* value) const
1839 {
1840     wxString type(GetType());
1841     if (type == wxT("datetime"))
1842     {
1843         *value = ((wxVariantDataDateTime*)GetData())->GetValue();
1844         return true;
1845     }
1846     // Fallback to string conversion
1847     wxString val;
1848     return Convert(&val) &&
1849                 (value->ParseDateTime(val.c_str()/*FIXME-UTF8*/) ||
1850                  value->ParseDate(val.c_str()/*FIXME-UTF8*/) ||
1851                  value->ParseTime(val.c_str()/*FIXME-UTF8*/));
1852 }
1853 #endif // wxUSE_DATETIME
1854
1855 #endif // wxUSE_VARIANT