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     #include "wx/crt.h"
  27     #if wxUSE_STREAMS
  28         #include "wx/stream.h"
  29     #endif
  30 #endif
  31
  32 #if wxUSE_STD_IOSTREAM
  33     #if wxUSE_IOSTREAMH
  34         #include <fstream.h>
  35     #else
  36         #include <fstream>
  37     #endif
  38 #endif
  39
  40 #if defined(__MWERKS__) && __MSL__ >= 0x6000
  41 namespace std {}
  42 using namespace std ;
  43 #endif
  44
  45 #if wxUSE_STREAMS
  46     #include "wx/txtstrm.h"
  47 #endif
  48
  49 #include "wx/string.h"
  50 #include "wx/tokenzr.h"
  51
  52 wxVariant WXDLLIMPEXP_BASE wxNullVariant;
  53
  54
  55 #include "wx/listimpl.cpp"
  56 WX_DEFINE_LIST(wxVariantList)
  57
  58 /*
  59  * wxVariant
  60  */
  61
  62 IMPLEMENT_DYNAMIC_CLASS(wxVariant, wxObject)
  63
  64 wxVariant::wxVariant()
  65 {
  66     m_data = NULL;
  67 }
  68
  69 bool wxVariant::IsNull() const
  70 {
  71      return (m_data == NULL);
  72 }
  73
  74 void wxVariant::MakeNull()
  75 {
  76     UnRef();
  77 }
  78
  79 void wxVariant::Clear()
  80 {
  81     m_name = wxEmptyString;
  82 }
  83
  84 wxVariant::wxVariant(const wxVariant& variant)
  85     : wxObject()
  86 {
  87     m_data = NULL;
  88
  89     if (!variant.IsNull())
  90         Ref(variant);
  91
  92     m_name = variant.m_name;
  93 }
  94
  95 wxVariant::wxVariant(wxVariantData* data, const wxString& name) // User-defined data
  96 {
  97     m_data = data;
  98     m_name = name;
  99 }
 100
 101 wxVariant::~wxVariant()
 102 {
 103     UnRef();
 104 }
 105
 106 // Assignment
 107 void wxVariant::operator= (const wxVariant& variant)
 108 {
 109     Ref(variant);
 110     m_name = variant.m_name;
 111 }
 112
 113 // myVariant = new wxStringVariantData("hello")
 114 void wxVariant::operator= (wxVariantData* variantData)
 115 {
 116     UnRef();
 117     m_data = variantData;
 118 }
 119
 120 bool wxVariant::operator== (const wxVariant& variant) const
 121 {
 122     if (IsNull() || variant.IsNull())
 123         return (IsNull() == variant.IsNull());
 124
 125     if (GetType() != variant.GetType())
 126         return false;
 127
 128     return (GetData()->Eq(* variant.GetData()));
 129 }
 130
 131 bool wxVariant::operator!= (const wxVariant& variant) const
 132 {
 133     return (!(*this == variant));
 134 }
 135
 136 wxString wxVariant::MakeString() const
 137 {
 138     if (!IsNull())
 139     {
 140         wxString str;
 141         if (GetData()->Write(str))
 142             return str;
 143     }
 144     return wxEmptyString;
 145 }
 146
 147 void wxVariant::SetData(wxVariantData* data)
 148 {
 149     UnRef();
 150     m_data = data;
 151 }
 152
 153 void wxVariant::Ref(const wxVariant& clone)
 154 {
 155     // nothing to be done
 156     if (m_data == clone.m_data)
 157         return;
 158
 159     // delete reference to old data
 160     UnRef();
 161
 162     // reference new data
 163     if ( clone.m_data )
 164     {
 165         m_data = clone.m_data;
 166         m_data->m_count++;
 167     }
 168 }
 169
 170
 171 void wxVariant::UnRef()
 172 {
 173     if ( m_data )
 174     {
 175         wxASSERT_MSG( m_data->m_count > 0, _T("invalid ref data count") );
 176
 177         m_data->DecRef();
 178         m_data = NULL;
 179     }
 180 }
 181
 182 bool wxVariant::Unshare()
 183 {
 184     if ( m_data && m_data->GetRefCount() > 1 )
 185     {
 186         // note that ref is not going to be destroyed in this case...
 187         const wxVariantData* ref = m_data;
 188         UnRef();
 189
 190         // ... so we can still access it
 191         m_data = ref->Clone();
 192
 193         wxASSERT_MSG( (m_data && m_data->GetRefCount() == 1),
 194                   _T("wxVariant::AllocExclusive() failed.") );
 195
 196         if (!m_data || m_data->GetRefCount() != 1)
 197             return false;
 198         else
 199             return true;
 200     }
 201     //else: data is null or ref count is 1, so we are exclusive owners of m_refData anyhow
 202     else
 203         return true;
 204 }
 205
 206
 207 // Returns a string representing the type of the variant,
 208 // e.g. "string", "bool", "list", "double", "long"
 209 wxString wxVariant::GetType() const
 210 {
 211     if (IsNull())
 212         return wxString(wxT("null"));
 213     else
 214         return GetData()->GetType();
 215 }
 216
 217
 218 bool wxVariant::IsType(const wxString& type) const
 219 {
 220     return (GetType() == type);
 221 }
 222
 223 bool wxVariant::IsValueKindOf(const wxClassInfo* type) const
 224 {
 225     wxClassInfo* info=GetData()->GetValueClassInfo();
 226     return info ? info->IsKindOf(type) : false ;
 227 }
 228
 229
 230 // -----------------------------------------------------------------
 231 // wxVariantDataLong
 232 // -----------------------------------------------------------------
 233
 234 class WXDLLIMPEXP_BASE wxVariantDataLong: public wxVariantData
 235 {
 236 public:
 237     wxVariantDataLong() { m_value = 0; }
 238     wxVariantDataLong(long value) { m_value = value; }
 239
 240     inline long GetValue() const { return m_value; }
 241     inline void SetValue(long value) { m_value = value; }
 242
 243     virtual bool Eq(wxVariantData& data) const;
 244
 245     virtual bool Read(wxString& str);
 246     virtual bool Write(wxString& str) const;
 247 #if wxUSE_STD_IOSTREAM
 248     virtual bool Read(wxSTD istream& str);
 249     virtual bool Write(wxSTD ostream& str) const;
 250 #endif
 251 #if wxUSE_STREAMS
 252     virtual bool Read(wxInputStream& str);
 253     virtual bool Write(wxOutputStream &str) const;
 254 #endif // wxUSE_STREAMS
 255
 256     wxVariantData* Clone() const { return new wxVariantDataLong(m_value); }
 257
 258     virtual wxString GetType() const { return wxT("long"); }
 259
 260 protected:
 261     long m_value;
 262 };
 263
 264 bool wxVariantDataLong::Eq(wxVariantData& data) const
 265 {
 266     wxASSERT_MSG( (data.GetType() == wxT("long")), wxT("wxVariantDataLong::Eq: argument mismatch") );
 267
 268     wxVariantDataLong& otherData = (wxVariantDataLong&) data;
 269
 270     return (otherData.m_value == m_value);
 271 }
 272
 273 #if wxUSE_STD_IOSTREAM
 274 bool wxVariantDataLong::Write(wxSTD ostream& str) const
 275 {
 276     wxString s;
 277     Write(s);
 278     str << (const char*) s.mb_str();
 279     return true;
 280 }
 281 #endif
 282
 283 bool wxVariantDataLong::Write(wxString& str) const
 284 {
 285     str.Printf(wxT("%ld"), m_value);
 286     return true;
 287 }
 288
 289 #if wxUSE_STD_IOSTREAM
 290 bool wxVariantDataLong::Read(wxSTD istream& str)
 291 {
 292     str >> m_value;
 293     return true;
 294 }
 295 #endif
 296
 297 #if wxUSE_STREAMS
 298 bool wxVariantDataLong::Write(wxOutputStream& str) const
 299 {
 300     wxTextOutputStream s(str);
 301
 302     s.Write32((size_t)m_value);
 303     return true;
 304 }
 305
 306 bool wxVariantDataLong::Read(wxInputStream& str)
 307 {
 308    wxTextInputStream s(str);
 309    m_value = s.Read32();
 310    return true;
 311 }
 312 #endif // wxUSE_STREAMS
 313
 314 bool wxVariantDataLong::Read(wxString& str)
 315 {
 316     m_value = wxAtol(str);
 317     return true;
 318 }
 319
 320 // wxVariant
 321
 322 wxVariant::wxVariant(long val, const wxString& name)
 323 {
 324     m_data = new wxVariantDataLong(val);
 325     m_name = name;
 326 }
 327
 328 wxVariant::wxVariant(int val, const wxString& name)
 329 {
 330     m_data = new wxVariantDataLong((long)val);
 331     m_name = name;
 332 }
 333
 334 wxVariant::wxVariant(short val, const wxString& name)
 335 {
 336     m_data = new wxVariantDataLong((long)val);
 337     m_name = name;
 338 }
 339
 340 bool wxVariant::operator== (long value) const
 341 {
 342     long thisValue;
 343     if (!Convert(&thisValue))
 344         return false;
 345     else
 346         return (value == thisValue);
 347 }
 348
 349 bool wxVariant::operator!= (long value) const
 350 {
 351     return (!((*this) == value));
 352 }
 353
 354 void wxVariant::operator= (long value)
 355 {
 356     if (GetType() == wxT("long") &&
 357         m_data->GetRefCount() == 1)
 358     {
 359         ((wxVariantDataLong*)GetData())->SetValue(value);
 360     }
 361     else
 362     {
 363         UnRef();
 364         m_data = new wxVariantDataLong(value);
 365     }
 366 }
 367
 368 long wxVariant::GetLong() const
 369 {
 370     long value;
 371     if (Convert(& value))
 372         return value;
 373     else
 374     {
 375         wxFAIL_MSG(wxT("Could not convert to a long"));
 376         return 0;
 377     }
 378 }
 379
 380 // -----------------------------------------------------------------
 381 // wxVariantDoubleData
 382 // -----------------------------------------------------------------
 383
 384 class WXDLLIMPEXP_BASE wxVariantDoubleData: public wxVariantData
 385 {
 386 public:
 387     wxVariantDoubleData() { m_value = 0.0; }
 388     wxVariantDoubleData(double value) { m_value = value; }
 389
 390     inline double GetValue() const { return m_value; }
 391     inline void SetValue(double value) { m_value = value; }
 392
 393     virtual bool Eq(wxVariantData& data) const;
 394     virtual bool Read(wxString& str);
 395 #if wxUSE_STD_IOSTREAM
 396     virtual bool Write(wxSTD ostream& str) const;
 397 #endif
 398     virtual bool Write(wxString& str) const;
 399 #if wxUSE_STD_IOSTREAM
 400     virtual bool Read(wxSTD istream& str);
 401 #endif
 402 #if wxUSE_STREAMS
 403     virtual bool Read(wxInputStream& str);
 404     virtual bool Write(wxOutputStream &str) const;
 405 #endif // wxUSE_STREAMS
 406     virtual wxString GetType() const { return wxT("double"); }
 407
 408     wxVariantData* Clone() const { return new wxVariantDoubleData(m_value); }
 409 protected:
 410     double m_value;
 411 };
 412
 413 bool wxVariantDoubleData::Eq(wxVariantData& data) const
 414 {
 415     wxASSERT_MSG( (data.GetType() == wxT("double")), wxT("wxVariantDoubleData::Eq: argument mismatch") );
 416
 417     wxVariantDoubleData& otherData = (wxVariantDoubleData&) data;
 418
 419     return wxIsSameDouble(otherData.m_value, m_value);
 420 }
 421
 422 #if wxUSE_STD_IOSTREAM
 423 bool wxVariantDoubleData::Write(wxSTD ostream& str) const
 424 {
 425     wxString s;
 426     Write(s);
 427     str << (const char*) s.mb_str();
 428     return true;
 429 }
 430 #endif
 431
 432 bool wxVariantDoubleData::Write(wxString& str) const
 433 {
 434     str.Printf(wxT("%.14g"), m_value);
 435     return true;
 436 }
 437
 438 #if wxUSE_STD_IOSTREAM
 439 bool wxVariantDoubleData::Read(wxSTD istream& str)
 440 {
 441     str >> m_value;
 442     return true;
 443 }
 444 #endif
 445
 446 #if wxUSE_STREAMS
 447 bool wxVariantDoubleData::Write(wxOutputStream& str) const
 448 {
 449     wxTextOutputStream s(str);
 450     s.WriteDouble((double)m_value);
 451     return true;
 452 }
 453
 454 bool wxVariantDoubleData::Read(wxInputStream& str)
 455 {
 456     wxTextInputStream s(str);
 457     m_value = (float)s.ReadDouble();
 458     return true;
 459 }
 460 #endif // wxUSE_STREAMS
 461
 462 bool wxVariantDoubleData::Read(wxString& str)
 463 {
 464     m_value = wxAtof(str);
 465     return true;
 466 }
 467
 468 //  wxVariant double code
 469
 470 wxVariant::wxVariant(double val, const wxString& name)
 471 {
 472     m_data = new wxVariantDoubleData(val);
 473     m_name = name;
 474 }
 475
 476 bool wxVariant::operator== (double value) const
 477 {
 478     double thisValue;
 479     if (!Convert(&thisValue))
 480         return false;
 481
 482     return wxIsSameDouble(value, thisValue);
 483 }
 484
 485 bool wxVariant::operator!= (double value) const
 486 {
 487     return (!((*this) == value));
 488 }
 489
 490 void wxVariant::operator= (double value)
 491 {
 492     if (GetType() == wxT("double") &&
 493         m_data->GetRefCount() == 1)
 494     {
 495         ((wxVariantDoubleData*)GetData())->SetValue(value);
 496     }
 497     else
 498     {
 499         UnRef();
 500         m_data = new wxVariantDoubleData(value);
 501     }
 502 }
 503
 504 double wxVariant::GetDouble() const
 505 {
 506     double value;
 507     if (Convert(& value))
 508         return value;
 509     else
 510     {
 511         wxFAIL_MSG(wxT("Could not convert to a double number"));
 512         return 0.0;
 513     }
 514 }
 515
 516 // -----------------------------------------------------------------
 517 // wxVariantBoolData
 518 // -----------------------------------------------------------------
 519
 520 class WXDLLIMPEXP_BASE wxVariantDataBool: public wxVariantData
 521 {
 522 public:
 523     wxVariantDataBool() { m_value = 0; }
 524     wxVariantDataBool(bool value) { m_value = value; }
 525
 526     inline bool GetValue() const { return m_value; }
 527     inline void SetValue(bool value) { m_value = value; }
 528
 529     virtual bool Eq(wxVariantData& data) const;
 530 #if wxUSE_STD_IOSTREAM
 531     virtual bool Write(wxSTD ostream& str) const;
 532 #endif
 533     virtual bool Write(wxString& str) const;
 534     virtual bool Read(wxString& str);
 535 #if wxUSE_STD_IOSTREAM
 536     virtual bool Read(wxSTD istream& str);
 537 #endif
 538 #if wxUSE_STREAMS
 539     virtual bool Read(wxInputStream& str);
 540     virtual bool Write(wxOutputStream& str) const;
 541 #endif // wxUSE_STREAMS
 542     virtual wxString GetType() const { return wxT("bool"); }
 543
 544     wxVariantData* Clone() const { return new wxVariantDataBool(m_value); }
 545 protected:
 546     bool m_value;
 547 };
 548
 549 bool wxVariantDataBool::Eq(wxVariantData& data) const
 550 {
 551     wxASSERT_MSG( (data.GetType() == wxT("bool")), wxT("wxVariantDataBool::Eq: argument mismatch") );
 552
 553     wxVariantDataBool& otherData = (wxVariantDataBool&) data;
 554
 555     return (otherData.m_value == m_value);
 556 }
 557
 558 #if wxUSE_STD_IOSTREAM
 559 bool wxVariantDataBool::Write(wxSTD ostream& str) const
 560 {
 561     wxString s;
 562     Write(s);
 563     str << (const char*) s.mb_str();
 564     return true;
 565 }
 566 #endif
 567
 568 bool wxVariantDataBool::Write(wxString& str) const
 569 {
 570     str.Printf(wxT("%d"), (int) m_value);
 571     return true;
 572 }
 573
 574 #if wxUSE_STD_IOSTREAM
 575 bool wxVariantDataBool::Read(wxSTD istream& WXUNUSED(str))
 576 {
 577     wxFAIL_MSG(wxT("Unimplemented"));
 578 //    str >> (long) m_value;
 579     return false;
 580 }
 581 #endif
 582
 583 #if wxUSE_STREAMS
 584 bool wxVariantDataBool::Write(wxOutputStream& str) const
 585 {
 586     wxTextOutputStream s(str);
 587
 588     s.Write8(m_value);
 589     return true;
 590 }
 591
 592 bool wxVariantDataBool::Read(wxInputStream& str)
 593 {
 594     wxTextInputStream s(str);
 595
 596     m_value = s.Read8() != 0;
 597     return true;
 598 }
 599 #endif // wxUSE_STREAMS
 600
 601 bool wxVariantDataBool::Read(wxString& str)
 602 {
 603     m_value = (wxAtol(str) != 0);
 604     return true;
 605 }
 606
 607 // wxVariant ****
 608
 609 wxVariant::wxVariant(bool val, const wxString& name)
 610 {
 611     m_data = new wxVariantDataBool(val);
 612     m_name = name;
 613 }
 614
 615 bool wxVariant::operator== (bool value) const
 616 {
 617     bool thisValue;
 618     if (!Convert(&thisValue))
 619         return false;
 620     else
 621         return (value == thisValue);
 622 }
 623
 624 bool wxVariant::operator!= (bool value) const
 625 {
 626     return (!((*this) == value));
 627 }
 628
 629 void wxVariant::operator= (bool value)
 630 {
 631     if (GetType() == wxT("bool") &&
 632         m_data->GetRefCount() == 1)
 633     {
 634         ((wxVariantDataBool*)GetData())->SetValue(value);
 635     }
 636     else
 637     {
 638         UnRef();
 639         m_data = new wxVariantDataBool(value);
 640     }
 641 }
 642
 643 bool wxVariant::GetBool() const
 644 {
 645     bool value;
 646     if (Convert(& value))
 647         return value;
 648     else
 649     {
 650         wxFAIL_MSG(wxT("Could not convert to a bool"));
 651         return 0;
 652     }
 653 }
 654
 655 // -----------------------------------------------------------------
 656 // wxVariantDataChar
 657 // -----------------------------------------------------------------
 658
 659 class WXDLLIMPEXP_BASE wxVariantDataChar: public wxVariantData
 660 {
 661 public:
 662     wxVariantDataChar() { m_value = 0; }
 663     wxVariantDataChar(const wxUniChar& value) { m_value = value; }
 664
 665     inline wxUniChar GetValue() const { return m_value; }
 666     inline void SetValue(const wxUniChar& value) { m_value = value; }
 667
 668     virtual bool Eq(wxVariantData& data) const;
 669 #if wxUSE_STD_IOSTREAM
 670     virtual bool Read(wxSTD istream& str);
 671     virtual bool Write(wxSTD ostream& str) const;
 672 #endif
 673     virtual bool Read(wxString& str);
 674     virtual bool Write(wxString& str) const;
 675 #if wxUSE_STREAMS
 676     virtual bool Read(wxInputStream& str);
 677     virtual bool Write(wxOutputStream& str) const;
 678 #endif // wxUSE_STREAMS
 679     virtual wxString GetType() const { return wxT("char"); }
 680     wxVariantData* Clone() const { return new wxVariantDataChar(m_value); }
 681
 682 protected:
 683     wxUniChar m_value;
 684 };
 685
 686 bool wxVariantDataChar::Eq(wxVariantData& data) const
 687 {
 688     wxASSERT_MSG( (data.GetType() == wxT("char")), wxT("wxVariantDataChar::Eq: argument mismatch") );
 689
 690     wxVariantDataChar& otherData = (wxVariantDataChar&) data;
 691
 692     return (otherData.m_value == m_value);
 693 }
 694
 695 #if wxUSE_STD_IOSTREAM
 696 bool wxVariantDataChar::Write(wxSTD ostream& str) const
 697 {
 698     str << wxString(m_value);
 699     return true;
 700 }
 701 #endif
 702
 703 bool wxVariantDataChar::Write(wxString& str) const
 704 {
 705     str = m_value;
 706     return true;
 707 }
 708
 709 #if wxUSE_STD_IOSTREAM
 710 bool wxVariantDataChar::Read(wxSTD istream& WXUNUSED(str))
 711 {
 712     wxFAIL_MSG(wxT("Unimplemented"));
 713
 714     return false;
 715 }
 716 #endif
 717
 718 #if wxUSE_STREAMS
 719 bool wxVariantDataChar::Write(wxOutputStream& str) const
 720 {
 721     wxTextOutputStream s(str);
 722
 723     // FIXME-UTF8: this should be just "s << m_value;" after removal of
 724     //             ANSI build and addition of wxUniChar to wxTextOutputStream:
 725     s << (wxChar)m_value;
 726
 727     return true;
 728 }
 729
 730 bool wxVariantDataChar::Read(wxInputStream& str)
 731 {
 732     wxTextInputStream s(str);
 733
 734     // FIXME-UTF8: this should be just "s >> m_value;" after removal of
 735     //             ANSI build and addition of wxUniChar to wxTextInputStream:
 736     wxChar ch;
 737     s >> ch;
 738     m_value = ch;
 739
 740     return true;
 741 }
 742 #endif // wxUSE_STREAMS
 743
 744 bool wxVariantDataChar::Read(wxString& str)
 745 {
 746     m_value = str[0u];
 747     return true;
 748 }
 749
 750 wxVariant::wxVariant(const wxUniChar& val, const wxString& name)
 751 {
 752     m_data = new wxVariantDataChar(val);
 753     m_name = name;
 754 }
 755
 756 wxVariant::wxVariant(char val, const wxString& name)
 757 {
 758     m_data = new wxVariantDataChar(val);
 759     m_name = name;
 760 }
 761
 762 wxVariant::wxVariant(wchar_t val, const wxString& name)
 763 {
 764     m_data = new wxVariantDataChar(val);
 765     m_name = name;
 766 }
 767
 768 bool wxVariant::operator==(const wxUniChar& value) const
 769 {
 770     wxUniChar thisValue;
 771     if (!Convert(&thisValue))
 772         return false;
 773     else
 774         return (value == thisValue);
 775 }
 776
 777 wxVariant& wxVariant::operator=(const wxUniChar& value)
 778 {
 779     if (GetType() == wxT("char") &&
 780         m_data->GetRefCount() == 1)
 781     {
 782         ((wxVariantDataChar*)GetData())->SetValue(value);
 783     }
 784     else
 785     {
 786         UnRef();
 787         m_data = new wxVariantDataChar(value);
 788     }
 789
 790     return *this;
 791 }
 792
 793 wxUniChar wxVariant::GetChar() const
 794 {
 795     wxUniChar value;
 796     if (Convert(& value))
 797         return value;
 798     else
 799     {
 800         wxFAIL_MSG(wxT("Could not convert to a char"));
 801         return wxUniChar(0);
 802     }
 803 }
 804
 805 // ----------------------------------------------------------------------------
 806 // wxVariantDataString
 807 // ----------------------------------------------------------------------------
 808
 809 class WXDLLIMPEXP_BASE wxVariantDataString: public wxVariantData
 810 {
 811 public:
 812     wxVariantDataString() { }
 813     wxVariantDataString(const wxString& value) { m_value = value; }
 814
 815     inline wxString GetValue() const { return m_value; }
 816     inline void SetValue(const wxString& value) { m_value = value; }
 817
 818     virtual bool Eq(wxVariantData& data) const;
 819 #if wxUSE_STD_IOSTREAM
 820     virtual bool Write(wxSTD ostream& str) const;
 821 #endif
 822     virtual bool Read(wxString& str);
 823     virtual bool Write(wxString& str) const;
 824 #if wxUSE_STD_IOSTREAM
 825     virtual bool Read(wxSTD istream& WXUNUSED(str)) { return false; }
 826 #endif
 827 #if wxUSE_STREAMS
 828     virtual bool Read(wxInputStream& str);
 829     virtual bool Write(wxOutputStream& str) const;
 830 #endif // wxUSE_STREAMS
 831     virtual wxString GetType() const { return wxT("string"); }
 832     wxVariantData* Clone() const { return new wxVariantDataString(m_value); }
 833
 834 protected:
 835     wxString m_value;
 836 };
 837
 838 bool wxVariantDataString::Eq(wxVariantData& data) const
 839 {
 840     wxASSERT_MSG( (data.GetType() == wxT("string")), wxT("wxVariantDataString::Eq: argument mismatch") );
 841
 842     wxVariantDataString& otherData = (wxVariantDataString&) data;
 843
 844     return (otherData.m_value == m_value);
 845 }
 846
 847 #if wxUSE_STD_IOSTREAM
 848 bool wxVariantDataString::Write(wxSTD ostream& str) const
 849 {
 850     str << (const char*) m_value.mb_str();
 851     return true;
 852 }
 853 #endif
 854
 855 bool wxVariantDataString::Write(wxString& str) const
 856 {
 857     str = m_value;
 858     return true;
 859 }
 860
 861 #if wxUSE_STREAMS
 862 bool wxVariantDataString::Write(wxOutputStream& str) const
 863 {
 864   // why doesn't wxOutputStream::operator<< take "const wxString&"
 865     wxTextOutputStream s(str);
 866     s.WriteString(m_value);
 867     return true;
 868 }
 869
 870 bool wxVariantDataString::Read(wxInputStream& str)
 871 {
 872     wxTextInputStream s(str);
 873
 874     m_value = s.ReadLine();
 875     return true;
 876 }
 877 #endif // wxUSE_STREAMS
 878
 879 bool wxVariantDataString::Read(wxString& str)
 880 {
 881     m_value = str;
 882     return true;
 883 }
 884
 885 // wxVariant ****
 886
 887 wxVariant::wxVariant(const wxString& val, const wxString& name)
 888 {
 889     m_data = new wxVariantDataString(val);
 890     m_name = name;
 891 }
 892
 893 wxVariant::wxVariant(const char* val, const wxString& name)
 894 {
 895     m_data = new wxVariantDataString(wxString(val));
 896     m_name = name;
 897 }
 898
 899 wxVariant::wxVariant(const wchar_t* val, const wxString& name)
 900 {
 901     m_data = new wxVariantDataString(wxString(val));
 902     m_name = name;
 903 }
 904
 905 wxVariant::wxVariant(const wxCStrData& val, const wxString& name)
 906 {
 907     m_data = new wxVariantDataString(val.AsString());
 908     m_name = name;
 909 }
 910
 911 wxVariant::wxVariant(const wxCharBuffer& val, const wxString& name)
 912 {
 913     m_data = new wxVariantDataString(wxString(val));
 914     m_name = name;
 915 }
 916
 917 wxVariant::wxVariant(const wxWCharBuffer& val, const wxString& name)
 918 {
 919     m_data = new wxVariantDataString(wxString(val));
 920     m_name = name;
 921 }
 922
 923 bool wxVariant::operator== (const wxString& value) const
 924 {
 925     wxString thisValue;
 926     if (!Convert(&thisValue))
 927         return false;
 928
 929     return value == thisValue;
 930 }
 931
 932 bool wxVariant::operator!= (const wxString& value) const
 933 {
 934     return (!((*this) == value));
 935 }
 936
 937 wxVariant& wxVariant::operator= (const wxString& value)
 938 {
 939     if (GetType() == wxT("string") &&
 940         m_data->GetRefCount() == 1)
 941     {
 942         ((wxVariantDataString*)GetData())->SetValue(value);
 943     }
 944     else
 945     {
 946         UnRef();
 947         m_data = new wxVariantDataString(value);
 948     }
 949     return *this;
 950 }
 951
 952 wxString wxVariant::GetString() const
 953 {
 954     wxString value;
 955     if (!Convert(& value))
 956     {
 957         wxFAIL_MSG(wxT("Could not convert to a string"));
 958     }
 959
 960     return value;
 961 }
 962
 963 // ----------------------------------------------------------------------------
 964 // wxVariantDataWxObjectPtr
 965 // ----------------------------------------------------------------------------
 966
 967 class wxVariantDataWxObjectPtr: public wxVariantData
 968 {
 969 public:
 970     wxVariantDataWxObjectPtr() { }
 971     wxVariantDataWxObjectPtr(wxObject* value) { m_value = value; }
 972
 973     inline wxObject* GetValue() const { return m_value; }
 974     inline void SetValue(wxObject* value) { m_value = value; }
 975
 976     virtual bool Eq(wxVariantData& data) const;
 977 #if wxUSE_STD_IOSTREAM
 978     virtual bool Write(wxSTD ostream& str) const;
 979 #endif
 980     virtual bool Write(wxString& str) const;
 981 #if wxUSE_STD_IOSTREAM
 982     virtual bool Read(wxSTD istream& str);
 983 #endif
 984     virtual bool Read(wxString& str);
 985     virtual wxString GetType() const ;
 986     virtual wxVariantData* Clone() const { return new wxVariantDataWxObjectPtr(m_value); }
 987
 988     virtual wxClassInfo* GetValueClassInfo();
 989
 990 protected:
 991     wxObject* m_value;
 992 };
 993
 994 bool wxVariantDataWxObjectPtr::Eq(wxVariantData& data) const
 995 {
 996     wxASSERT_MSG( data.GetType() == GetType(), wxT("wxVariantDataWxObjectPtr::Eq: argument mismatch") );
 997
 998     wxVariantDataWxObjectPtr& otherData = (wxVariantDataWxObjectPtr&) data;
 999
1000     return (otherData.m_value == m_value);
1001 }
1002
1003 wxString wxVariantDataWxObjectPtr::GetType() const
1004 {
1005     wxString returnVal(wxT("wxObject*"));
1006
1007     if (m_value)
1008     {
1009         returnVal = m_value->GetClassInfo()->GetClassName();
1010         returnVal += wxT("*");
1011     }
1012
1013     return returnVal;
1014 }
1015
1016 wxClassInfo* wxVariantDataWxObjectPtr::GetValueClassInfo()
1017 {
1018     wxClassInfo* returnVal=NULL;
1019
1020     if (m_value) returnVal = m_value->GetClassInfo();
1021
1022     return returnVal;
1023 }
1024
1025 #if wxUSE_STD_IOSTREAM
1026 bool wxVariantDataWxObjectPtr::Write(wxSTD ostream& str) const
1027 {
1028     wxString s;
1029     Write(s);
1030     str << (const char*) s.mb_str();
1031     return true;
1032 }
1033 #endif
1034
1035 bool wxVariantDataWxObjectPtr::Write(wxString& str) const
1036 {
1037     str.Printf(wxT("%s(%p)"), GetType().c_str(), static_cast<void*>(m_value));
1038     return true;
1039 }
1040
1041 #if wxUSE_STD_IOSTREAM
1042 bool wxVariantDataWxObjectPtr::Read(wxSTD istream& WXUNUSED(str))
1043 {
1044     // Not implemented
1045     return false;
1046 }
1047 #endif
1048
1049 bool wxVariantDataWxObjectPtr::Read(wxString& WXUNUSED(str))
1050 {
1051     // Not implemented
1052     return false;
1053 }
1054
1055 // wxVariant
1056
1057 wxVariant::wxVariant( wxObject* val, const wxString& name)
1058 {
1059     m_data = new wxVariantDataWxObjectPtr(val);
1060     m_name = name;
1061 }
1062
1063 bool wxVariant::operator== (wxObject* value) const
1064 {
1065     return (value == ((wxVariantDataWxObjectPtr*)GetData())->GetValue());
1066 }
1067
1068 bool wxVariant::operator!= (wxObject* value) const
1069 {
1070     return (!((*this) == (wxObject*) value));
1071 }
1072
1073 void wxVariant::operator= (wxObject* value)
1074 {
1075     UnRef();
1076     m_data = new wxVariantDataWxObjectPtr(value);
1077 }
1078
1079 wxObject* wxVariant::GetWxObjectPtr() const
1080 {
1081     return (wxObject*) ((wxVariantDataWxObjectPtr*) m_data)->GetValue();
1082 }
1083
1084 // ----------------------------------------------------------------------------
1085 // wxVariantDataVoidPtr
1086 // ----------------------------------------------------------------------------
1087
1088 class wxVariantDataVoidPtr: public wxVariantData
1089 {
1090 public:
1091     wxVariantDataVoidPtr() { }
1092     wxVariantDataVoidPtr(void* value) { m_value = value; }
1093
1094     inline void* GetValue() const { return m_value; }
1095     inline void SetValue(void* value) { m_value = value; }
1096
1097     virtual bool Eq(wxVariantData& data) const;
1098 #if wxUSE_STD_IOSTREAM
1099     virtual bool Write(wxSTD ostream& str) const;
1100 #endif
1101     virtual bool Write(wxString& str) const;
1102 #if wxUSE_STD_IOSTREAM
1103     virtual bool Read(wxSTD istream& str);
1104 #endif
1105     virtual bool Read(wxString& str);
1106     virtual wxString GetType() const { return wxT("void*"); }
1107     virtual wxVariantData* Clone() const { return new wxVariantDataVoidPtr(m_value); }
1108
1109 protected:
1110     void* m_value;
1111 };
1112
1113 bool wxVariantDataVoidPtr::Eq(wxVariantData& data) const
1114 {
1115     wxASSERT_MSG( data.GetType() == wxT("void*"), wxT("wxVariantDataVoidPtr::Eq: argument mismatch") );
1116
1117     wxVariantDataVoidPtr& otherData = (wxVariantDataVoidPtr&) data;
1118
1119     return (otherData.m_value == m_value);
1120 }
1121
1122 #if wxUSE_STD_IOSTREAM
1123 bool wxVariantDataVoidPtr::Write(wxSTD ostream& str) const
1124 {
1125     wxString s;
1126     Write(s);
1127     str << (const char*) s.mb_str();
1128     return true;
1129 }
1130 #endif
1131
1132 bool wxVariantDataVoidPtr::Write(wxString& str) const
1133 {
1134     str.Printf(wxT("%p"), m_value);
1135     return true;
1136 }
1137
1138 #if wxUSE_STD_IOSTREAM
1139 bool wxVariantDataVoidPtr::Read(wxSTD istream& WXUNUSED(str))
1140 {
1141     // Not implemented
1142     return false;
1143 }
1144 #endif
1145
1146 bool wxVariantDataVoidPtr::Read(wxString& WXUNUSED(str))
1147 {
1148     // Not implemented
1149     return false;
1150 }
1151
1152 // wxVariant
1153
1154 wxVariant::wxVariant( void* val, const wxString& name)
1155 {
1156     m_data = new wxVariantDataVoidPtr(val);
1157     m_name = name;
1158 }
1159
1160 bool wxVariant::operator== (void* value) const
1161 {
1162     return (value == ((wxVariantDataVoidPtr*)GetData())->GetValue());
1163 }
1164
1165 bool wxVariant::operator!= (void* value) const
1166 {
1167     return (!((*this) == (void*) value));
1168 }
1169
1170 void wxVariant::operator= (void* value)
1171 {
1172     if (GetType() == wxT("void*") && (m_data->GetRefCount() == 1))
1173     {
1174         ((wxVariantDataVoidPtr*)GetData())->SetValue(value);
1175     }
1176     else
1177     {
1178         UnRef();
1179         m_data = new wxVariantDataVoidPtr(value);
1180     }
1181 }
1182
1183 void* wxVariant::GetVoidPtr() const
1184 {
1185     // handling this specially is convenient when working with COM, see #9873
1186     if ( IsNull() )
1187         return NULL;
1188
1189     wxASSERT( GetType() == wxT("void*") );
1190
1191     return (void*) ((wxVariantDataVoidPtr*) m_data)->GetValue();
1192 }
1193
1194 // ----------------------------------------------------------------------------
1195 // wxVariantDataDateTime
1196 // ----------------------------------------------------------------------------
1197
1198 #if wxUSE_DATETIME
1199
1200 class wxVariantDataDateTime: public wxVariantData
1201 {
1202 public:
1203     wxVariantDataDateTime() { }
1204     wxVariantDataDateTime(const wxDateTime& value) { m_value = value; }
1205
1206     inline wxDateTime GetValue() const { return m_value; }
1207     inline void SetValue(const wxDateTime& value) { m_value = value; }
1208
1209     virtual bool Eq(wxVariantData& data) const;
1210 #if wxUSE_STD_IOSTREAM
1211     virtual bool Write(wxSTD ostream& str) const;
1212 #endif
1213     virtual bool Write(wxString& str) const;
1214 #if wxUSE_STD_IOSTREAM
1215     virtual bool Read(wxSTD istream& str);
1216 #endif
1217     virtual bool Read(wxString& str);
1218     virtual wxString GetType() const { return wxT("datetime"); }
1219     virtual wxVariantData* Clone() const { return new wxVariantDataDateTime(m_value); }
1220
1221 protected:
1222     wxDateTime m_value;
1223 };
1224
1225
1226 bool wxVariantDataDateTime::Eq(wxVariantData& data) const
1227 {
1228     wxASSERT_MSG( (data.GetType() == wxT("datetime")), wxT("wxVariantDataDateTime::Eq: argument mismatch") );
1229
1230     wxVariantDataDateTime& otherData = (wxVariantDataDateTime&) data;
1231
1232     return (otherData.m_value == m_value);
1233 }
1234
1235
1236 #if wxUSE_STD_IOSTREAM
1237 bool wxVariantDataDateTime::Write(wxSTD ostream& str) const
1238 {
1239     wxString value;
1240     Write( value );
1241     str << value.c_str();
1242     return true;
1243 }
1244 #endif
1245
1246
1247 bool wxVariantDataDateTime::Write(wxString& str) const
1248 {
1249     if ( m_value.IsValid() )
1250         str = m_value.Format();
1251     else
1252         str = wxS("Invalid");
1253     return true;
1254 }
1255
1256
1257 #if wxUSE_STD_IOSTREAM
1258 bool wxVariantDataDateTime::Read(wxSTD istream& WXUNUSED(str))
1259 {
1260     // Not implemented
1261     return false;
1262 }
1263 #endif
1264
1265
1266 bool wxVariantDataDateTime::Read(wxString& str)
1267 {
1268     if ( str == wxS("Invalid") )
1269     {
1270         m_value = wxInvalidDateTime;
1271         return true;
1272     }
1273
1274     wxString::const_iterator end;
1275     return m_value.ParseDateTime(str, &end) && end == str.end();
1276 }
1277
1278 // wxVariant
1279
1280 wxVariant::wxVariant(const wxDateTime& val, const wxString& name) // Date
1281 {
1282     m_data = new wxVariantDataDateTime(val);
1283     m_name = name;
1284 }
1285
1286 bool wxVariant::operator== (const wxDateTime& value) const
1287 {
1288     wxDateTime thisValue;
1289     if (!Convert(&thisValue))
1290         return false;
1291
1292     return value.IsEqualTo(thisValue);
1293 }
1294
1295 bool wxVariant::operator!= (const wxDateTime& value) const
1296 {
1297     return (!((*this) == value));
1298 }
1299
1300 void wxVariant::operator= (const wxDateTime& value)
1301 {
1302     if (GetType() == wxT("datetime") &&
1303         m_data->GetRefCount() == 1)
1304     {
1305         ((wxVariantDataDateTime*)GetData())->SetValue(value);
1306     }
1307     else
1308     {
1309         UnRef();
1310         m_data = new wxVariantDataDateTime(value);
1311     }
1312 }
1313
1314 wxDateTime wxVariant::GetDateTime() const
1315 {
1316     wxDateTime value;
1317     if (!Convert(& value))
1318     {
1319         wxFAIL_MSG(wxT("Could not convert to a datetime"));
1320     }
1321
1322     return value;
1323 }
1324
1325 #endif // wxUSE_DATETIME
1326
1327 // ----------------------------------------------------------------------------
1328 // wxVariantDataArrayString
1329 // ----------------------------------------------------------------------------
1330
1331 class wxVariantDataArrayString: public wxVariantData
1332 {
1333 public:
1334     wxVariantDataArrayString() { }
1335     wxVariantDataArrayString(const wxArrayString& value) { m_value = value; }
1336
1337     wxArrayString GetValue() const { return m_value; }
1338     void SetValue(const wxArrayString& value) { m_value = value; }
1339
1340     virtual bool Eq(wxVariantData& data) const;
1341 #if wxUSE_STD_IOSTREAM
1342     virtual bool Write(wxSTD ostream& str) const;
1343 #endif
1344     virtual bool Write(wxString& str) const;
1345 #if wxUSE_STD_IOSTREAM
1346     virtual bool Read(wxSTD istream& str);
1347 #endif
1348     virtual bool Read(wxString& str);
1349     virtual wxString GetType() const { return wxT("arrstring"); }
1350     virtual wxVariantData* Clone() const { return new wxVariantDataArrayString(m_value); }
1351
1352 protected:
1353     wxArrayString m_value;
1354 };
1355
1356 bool wxVariantDataArrayString::Eq(wxVariantData& data) const
1357 {
1358     wxASSERT_MSG( data.GetType() == GetType(), wxT("wxVariantDataArrayString::Eq: argument mismatch") );
1359
1360     wxVariantDataArrayString& otherData = (wxVariantDataArrayString&) data;
1361
1362     return otherData.m_value == m_value;
1363 }
1364
1365 #if wxUSE_STD_IOSTREAM
1366 bool wxVariantDataArrayString::Write(wxSTD ostream& WXUNUSED(str)) const
1367 {
1368     // Not implemented
1369     return false;
1370 }
1371 #endif
1372
1373 bool wxVariantDataArrayString::Write(wxString& str) const
1374 {
1375     size_t count = m_value.GetCount();
1376     for ( size_t n = 0; n < count; n++ )
1377     {
1378         if ( n )
1379             str += _T(';');
1380
1381         str += m_value[n];
1382     }
1383
1384     return true;
1385 }
1386
1387
1388 #if wxUSE_STD_IOSTREAM
1389 bool wxVariantDataArrayString::Read(wxSTD istream& WXUNUSED(str))
1390 {
1391     // Not implemented
1392     return false;
1393 }
1394 #endif
1395
1396
1397 bool wxVariantDataArrayString::Read(wxString& str)
1398 {
1399     wxStringTokenizer tk(str, _T(";"));
1400     while ( tk.HasMoreTokens() )
1401     {
1402         m_value.Add(tk.GetNextToken());
1403     }
1404
1405     return true;
1406 }
1407
1408 // wxVariant
1409
1410 wxVariant::wxVariant(const wxArrayString& val, const wxString& name) // Strings
1411 {
1412     m_data = new wxVariantDataArrayString(val);
1413     m_name = name;
1414 }
1415
1416 bool wxVariant::operator==(const wxArrayString& WXUNUSED(value)) const
1417 {
1418     wxFAIL_MSG( _T("TODO") );
1419
1420     return false;
1421 }
1422
1423 bool wxVariant::operator!=(const wxArrayString& value) const
1424 {
1425     return !(*this == value);
1426 }
1427
1428 void wxVariant::operator=(const wxArrayString& value)
1429 {
1430     if (GetType() == wxT("arrstring") &&
1431         m_data->GetRefCount() == 1)
1432     {
1433         ((wxVariantDataArrayString *)GetData())->SetValue(value);
1434     }
1435     else
1436     {
1437         UnRef();
1438         m_data = new wxVariantDataArrayString(value);
1439     }
1440 }
1441
1442 wxArrayString wxVariant::GetArrayString() const
1443 {
1444     if ( GetType() == wxT("arrstring") )
1445         return ((wxVariantDataArrayString *)GetData())->GetValue();
1446
1447     return wxArrayString();
1448 }
1449
1450 // ----------------------------------------------------------------------------
1451 // wxVariantDataList
1452 // ----------------------------------------------------------------------------
1453
1454 class WXDLLIMPEXP_BASE wxVariantDataList: public wxVariantData
1455 {
1456 public:
1457     wxVariantDataList() {}
1458     wxVariantDataList(const wxVariantList& list);
1459     virtual ~wxVariantDataList();
1460
1461     wxVariantList& GetValue() { return m_value; }
1462     void SetValue(const wxVariantList& value) ;
1463
1464     virtual bool Eq(wxVariantData& data) const;
1465 #if wxUSE_STD_IOSTREAM
1466     virtual bool Write(wxSTD ostream& str) const;
1467 #endif
1468     virtual bool Write(wxString& str) const;
1469 #if wxUSE_STD_IOSTREAM
1470     virtual bool Read(wxSTD istream& str);
1471 #endif
1472     virtual bool Read(wxString& str);
1473     virtual wxString GetType() const { return wxT("list"); }
1474
1475     void Clear();
1476
1477     wxVariantData* Clone() const { return new wxVariantDataList(m_value); }
1478 protected:
1479     wxVariantList  m_value;
1480 };
1481
1482 wxVariantDataList::wxVariantDataList(const wxVariantList& list)
1483 {
1484     SetValue(list);
1485 }
1486
1487 wxVariantDataList::~wxVariantDataList()
1488 {
1489     Clear();
1490 }
1491
1492 void wxVariantDataList::SetValue(const wxVariantList& value)
1493 {
1494     Clear();
1495     wxVariantList::compatibility_iterator node = value.GetFirst();
1496     while (node)
1497     {
1498         wxVariant* var = node->GetData();
1499         m_value.Append(new wxVariant(*var));
1500         node = node->GetNext();
1501     }
1502 }
1503
1504 void wxVariantDataList::Clear()
1505 {
1506     wxVariantList::compatibility_iterator node = m_value.GetFirst();
1507     while (node)
1508     {
1509         wxVariant* var = node->GetData();
1510         delete var;
1511         node = node->GetNext();
1512     }
1513     m_value.Clear();
1514 }
1515
1516 bool wxVariantDataList::Eq(wxVariantData& data) const
1517 {
1518     wxASSERT_MSG( (data.GetType() == wxT("list")), wxT("wxVariantDataList::Eq: argument mismatch") );
1519
1520     wxVariantDataList& listData = (wxVariantDataList&) data;
1521     wxVariantList::compatibility_iterator node1 = m_value.GetFirst();
1522     wxVariantList::compatibility_iterator node2 = listData.GetValue().GetFirst();
1523     while (node1 && node2)
1524     {
1525         wxVariant* var1 = node1->GetData();
1526         wxVariant* var2 = node2->GetData();
1527         if ((*var1) != (*var2))
1528             return false;
1529         node1 = node1->GetNext();
1530         node2 = node2->GetNext();
1531     }
1532     if (node1 || node2) return false;
1533     return true;
1534 }
1535
1536 #if wxUSE_STD_IOSTREAM
1537 bool wxVariantDataList::Write(wxSTD ostream& str) const
1538 {
1539     wxString s;
1540     Write(s);
1541     str << (const char*) s.mb_str();
1542     return true;
1543 }
1544 #endif
1545
1546 bool wxVariantDataList::Write(wxString& str) const
1547 {
1548     str = wxEmptyString;
1549     wxVariantList::compatibility_iterator node = m_value.GetFirst();
1550     while (node)
1551     {
1552         wxVariant* var = node->GetData();
1553         if (node != m_value.GetFirst())
1554           str += wxT(" ");
1555         wxString str1;
1556         str += var->MakeString();
1557         node = node->GetNext();
1558     }
1559
1560     return true;
1561 }
1562
1563 #if wxUSE_STD_IOSTREAM
1564 bool wxVariantDataList::Read(wxSTD istream& WXUNUSED(str))
1565 {
1566     wxFAIL_MSG(wxT("Unimplemented"));
1567     // TODO
1568     return false;
1569 }
1570 #endif
1571
1572 bool wxVariantDataList::Read(wxString& WXUNUSED(str))
1573 {
1574     wxFAIL_MSG(wxT("Unimplemented"));
1575     // TODO
1576     return false;
1577 }
1578
1579 // wxVariant
1580
1581 wxVariant::wxVariant(const wxVariantList& val, const wxString& name) // List of variants
1582 {
1583     m_data = new wxVariantDataList(val);
1584     m_name = name;
1585 }
1586
1587 bool wxVariant::operator== (const wxVariantList& value) const
1588 {
1589     wxASSERT_MSG( (GetType() == wxT("list")), wxT("Invalid type for == operator") );
1590
1591     wxVariantDataList other(value);
1592     return (GetData()->Eq(other));
1593 }
1594
1595 bool wxVariant::operator!= (const wxVariantList& value) const
1596 {
1597     return (!((*this) == value));
1598 }
1599
1600 void wxVariant::operator= (const wxVariantList& value)
1601 {
1602     if (GetType() == wxT("list") &&
1603         m_data->GetRefCount() == 1)
1604     {
1605         ((wxVariantDataList*)GetData())->SetValue(value);
1606     }
1607     else
1608     {
1609         UnRef();
1610         m_data = new wxVariantDataList(value);
1611     }
1612 }
1613
1614 wxVariantList& wxVariant::GetList() const
1615 {
1616     wxASSERT( (GetType() == wxT("list")) );
1617
1618     return (wxVariantList&) ((wxVariantDataList*) m_data)->GetValue();
1619 }
1620
1621 // Make empty list
1622 void wxVariant::NullList()
1623 {
1624     SetData(new wxVariantDataList());
1625 }
1626
1627 // Append to list
1628 void wxVariant::Append(const wxVariant& value)
1629 {
1630     wxVariantList& list = GetList();
1631
1632     list.Append(new wxVariant(value));
1633 }
1634
1635 // Insert at front of list
1636 void wxVariant::Insert(const wxVariant& value)
1637 {
1638     wxVariantList& list = GetList();
1639
1640     list.Insert(new wxVariant(value));
1641 }
1642
1643 // Returns true if the variant is a member of the list
1644 bool wxVariant::Member(const wxVariant& value) const
1645 {
1646     wxVariantList& list = GetList();
1647
1648     wxVariantList::compatibility_iterator node = list.GetFirst();
1649     while (node)
1650     {
1651         wxVariant* other = node->GetData();
1652         if (value == *other)
1653             return true;
1654         node = node->GetNext();
1655     }
1656     return false;
1657 }
1658
1659 // Deletes the nth element of the list
1660 bool wxVariant::Delete(size_t item)
1661 {
1662     wxVariantList& list = GetList();
1663
1664     wxASSERT_MSG( (item < list.GetCount()), wxT("Invalid index to Delete") );
1665     wxVariantList::compatibility_iterator node = list.Item(item);
1666     wxVariant* variant = node->GetData();
1667     delete variant;
1668     list.Erase(node);
1669     return true;
1670 }
1671
1672 // Clear list
1673 void wxVariant::ClearList()
1674 {
1675     if (!IsNull() && (GetType() == wxT("list")))
1676     {
1677         ((wxVariantDataList*) m_data)->Clear();
1678     }
1679     else
1680     {
1681         if (!GetType().IsSameAs(wxT("list")))
1682             UnRef();
1683
1684         m_data = new wxVariantDataList;
1685     }
1686 }
1687
1688 // Treat a list variant as an array
1689 wxVariant wxVariant::operator[] (size_t idx) const
1690 {
1691     wxASSERT_MSG( GetType() == wxT("list"), wxT("Invalid type for array operator") );
1692
1693     if (GetType() == wxT("list"))
1694     {
1695         wxVariantDataList* data = (wxVariantDataList*) m_data;
1696         wxASSERT_MSG( (idx < data->GetValue().GetCount()), wxT("Invalid index for array") );
1697         return *(data->GetValue().Item(idx)->GetData());
1698     }
1699     return wxNullVariant;
1700 }
1701
1702 wxVariant& wxVariant::operator[] (size_t idx)
1703 {
1704     // We can't return a reference to a variant for a string list, since the string
1705     // is actually stored as a char*, not a variant.
1706
1707     wxASSERT_MSG( (GetType() == wxT("list")), wxT("Invalid type for array operator") );
1708
1709     wxVariantDataList* data = (wxVariantDataList*) m_data;
1710     wxASSERT_MSG( (idx < data->GetValue().GetCount()), wxT("Invalid index for array") );
1711
1712     return * (data->GetValue().Item(idx)->GetData());
1713 }
1714
1715 // Return the number of elements in a list
1716 size_t wxVariant::GetCount() const
1717 {
1718     wxASSERT_MSG( GetType() == wxT("list"), wxT("Invalid type for GetCount()") );
1719
1720     if (GetType() == wxT("list"))
1721     {
1722         wxVariantDataList* data = (wxVariantDataList*) m_data;
1723         return data->GetValue().GetCount();
1724     }
1725     return 0;
1726 }
1727
1728 // ----------------------------------------------------------------------------
1729 // Type conversion
1730 // ----------------------------------------------------------------------------
1731
1732 bool wxVariant::Convert(long* value) const
1733 {
1734     wxString type(GetType());
1735     if (type == wxT("double"))
1736         *value = (long) (((wxVariantDoubleData*)GetData())->GetValue());
1737     else if (type == wxT("long"))
1738         *value = ((wxVariantDataLong*)GetData())->GetValue();
1739     else if (type == wxT("bool"))
1740         *value = (long) (((wxVariantDataBool*)GetData())->GetValue());
1741     else if (type == wxT("string"))
1742         *value = wxAtol(((wxVariantDataString*)GetData())->GetValue());
1743     else
1744         return false;
1745
1746     return true;
1747 }
1748
1749 bool wxVariant::Convert(bool* value) const
1750 {
1751     wxString type(GetType());
1752     if (type == wxT("double"))
1753         *value = ((int) (((wxVariantDoubleData*)GetData())->GetValue()) != 0);
1754     else if (type == wxT("long"))
1755         *value = (((wxVariantDataLong*)GetData())->GetValue() != 0);
1756     else if (type == wxT("bool"))
1757         *value = ((wxVariantDataBool*)GetData())->GetValue();
1758     else if (type == wxT("string"))
1759     {
1760         wxString val(((wxVariantDataString*)GetData())->GetValue());
1761         val.MakeLower();
1762         if (val == wxT("true") || val == wxT("yes") || val == wxT('1') )
1763             *value = true;
1764         else if (val == wxT("false") || val == wxT("no") || val == wxT('0') )
1765             *value = false;
1766         else
1767             return false;
1768     }
1769     else
1770         return false;
1771
1772     return true;
1773 }
1774
1775 bool wxVariant::Convert(double* value) const
1776 {
1777     wxString type(GetType());
1778     if (type == wxT("double"))
1779         *value = ((wxVariantDoubleData*)GetData())->GetValue();
1780     else if (type == wxT("long"))
1781         *value = (double) (((wxVariantDataLong*)GetData())->GetValue());
1782     else if (type == wxT("bool"))
1783         *value = (double) (((wxVariantDataBool*)GetData())->GetValue());
1784     else if (type == wxT("string"))
1785         *value = (double) wxAtof(((wxVariantDataString*)GetData())->GetValue());
1786     else
1787         return false;
1788
1789     return true;
1790 }
1791
1792 bool wxVariant::Convert(wxUniChar* value) const
1793 {
1794     wxString type(GetType());
1795     if (type == wxT("char"))
1796         *value = ((wxVariantDataChar*)GetData())->GetValue();
1797     else if (type == wxT("long"))
1798         *value = (char) (((wxVariantDataLong*)GetData())->GetValue());
1799     else if (type == wxT("bool"))
1800         *value = (char) (((wxVariantDataBool*)GetData())->GetValue());
1801     else
1802         return false;
1803
1804     return true;
1805 }
1806
1807 bool wxVariant::Convert(char* value) const
1808 {
1809     wxUniChar ch;
1810     if ( !Convert(&ch) )
1811         return false;
1812     *value = ch;
1813     return true;
1814 }
1815
1816 bool wxVariant::Convert(wchar_t* value) const
1817 {
1818     wxUniChar ch;
1819     if ( !Convert(&ch) )
1820         return false;
1821     *value = ch;
1822     return true;
1823 }
1824
1825 bool wxVariant::Convert(wxString* value) const
1826 {
1827     *value = MakeString();
1828     return true;
1829 }
1830
1831 #if wxUSE_DATETIME
1832 bool wxVariant::Convert(wxDateTime* value) const
1833 {
1834     wxString type(GetType());
1835     if (type == wxT("datetime"))
1836     {
1837         *value = ((wxVariantDataDateTime*)GetData())->GetValue();
1838         return true;
1839     }
1840
1841     // Fallback to string conversion
1842     wxString val;
1843     if ( !Convert(&val) )
1844         return false;
1845
1846     // Try to parse this as either date and time, only date or only time
1847     // checking that the entire string was parsed
1848     wxString::const_iterator end;
1849     if ( value->ParseDateTime(val, &end) && end == val.end() )
1850         return true;
1851
1852     if ( value->ParseDate(val, &end) && end == val.end() )
1853         return true;
1854
1855     if ( value->ParseTime(val, &end) && end == val.end() )
1856         return true;
1857
1858     return false;
1859 }
1860 #endif // wxUSE_DATETIME
1861
1862 #endif // wxUSE_VARIANT