src/common/docview.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/docview.cpp
   3 // Purpose:     Document/view classes
   4 // Author:      Julian Smart
   5 // Modified by: Vadim Zeitlin
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #if wxUSE_DOC_VIEW_ARCHITECTURE
  28
  29 #include "wx/docview.h"
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/list.h"
  33     #include "wx/string.h"
  34     #include "wx/utils.h"
  35     #include "wx/app.h"
  36     #include "wx/dc.h"
  37     #include "wx/dialog.h"
  38     #include "wx/menu.h"
  39     #include "wx/filedlg.h"
  40     #include "wx/intl.h"
  41     #include "wx/log.h"
  42     #include "wx/msgdlg.h"
  43     #include "wx/mdi.h"
  44     #include "wx/choicdlg.h"
  45 #endif
  46
  47 #if wxUSE_PRINTING_ARCHITECTURE
  48     #include "wx/prntbase.h"
  49     #include "wx/printdlg.h"
  50 #endif
  51
  52 #include "wx/confbase.h"
  53 #include "wx/filename.h"
  54 #include "wx/file.h"
  55 #include "wx/ffile.h"
  56 #include "wx/cmdproc.h"
  57 #include "wx/tokenzr.h"
  58 #include "wx/filename.h"
  59 #include "wx/vector.h"
  60
  61 #if wxUSE_STD_IOSTREAM
  62     #include "wx/ioswrap.h"
  63     #include "wx/beforestd.h"
  64     #if wxUSE_IOSTREAMH
  65         #include <fstream.h>
  66     #else
  67         #include <fstream>
  68     #endif
  69     #include "wx/afterstd.h"
  70 #else
  71     #include "wx/wfstream.h"
  72 #endif
  73
  74 typedef wxVector<wxDocTemplate *> wxDocTemplates;
  75
  76 // ----------------------------------------------------------------------------
  77 // wxWidgets macros
  78 // ----------------------------------------------------------------------------
  79
  80 IMPLEMENT_ABSTRACT_CLASS(wxDocument, wxEvtHandler)
  81 IMPLEMENT_ABSTRACT_CLASS(wxView, wxEvtHandler)
  82 IMPLEMENT_ABSTRACT_CLASS(wxDocTemplate, wxObject)
  83 IMPLEMENT_DYNAMIC_CLASS(wxDocManager, wxEvtHandler)
  84 IMPLEMENT_CLASS(wxDocChildFrame, wxFrame)
  85 IMPLEMENT_CLASS(wxDocParentFrame, wxFrame)
  86
  87 #if wxUSE_PRINTING_ARCHITECTURE
  88     IMPLEMENT_DYNAMIC_CLASS(wxDocPrintout, wxPrintout)
  89 #endif
  90
  91 IMPLEMENT_DYNAMIC_CLASS(wxFileHistory, wxObject)
  92
  93 // ============================================================================
  94 // implementation
  95 // ============================================================================
  96
  97 // ----------------------------------------------------------------------------
  98 // private helpers
  99 // ----------------------------------------------------------------------------
 100
 101 namespace
 102 {
 103
 104 wxWindow *wxFindSuitableParent()
 105 {
 106     wxWindow * const win = wxGetTopLevelParent(wxWindow::FindFocus());
 107
 108     return win ? win : wxTheApp->GetTopWindow();
 109 }
 110
 111 wxString FindExtension(const wxString& path)
 112 {
 113     wxString ext;
 114     wxSplitPath(path, NULL, NULL, &ext);
 115
 116     // VZ: extensions are considered not case sensitive - is this really a good
 117     //     idea?
 118     return ext.MakeLower();
 119 }
 120
 121 // return the string used for the MRU list items in the menu
 122 //
 123 // NB: the index n is 0-based, as usual, but the strings start from 1
 124 wxString GetMRUEntryLabel(int n, const wxString& path)
 125 {
 126     // we need to quote '&' characters which are used for mnemonics
 127     wxString pathInMenu(path);
 128     pathInMenu.Replace("&", "&&");
 129
 130     return wxString::Format("&%d %s", n + 1, pathInMenu);
 131 }
 132
 133 } // anonymous namespace
 134
 135 // ----------------------------------------------------------------------------
 136 // Definition of wxDocument
 137 // ----------------------------------------------------------------------------
 138
 139 wxDocument::wxDocument(wxDocument *parent)
 140 {
 141     m_documentModified = false;
 142     m_documentParent = parent;
 143     m_documentTemplate = NULL;
 144     m_commandProcessor = NULL;
 145     m_savedYet = false;
 146 }
 147
 148 bool wxDocument::DeleteContents()
 149 {
 150     return true;
 151 }
 152
 153 wxDocument::~wxDocument()
 154 {
 155     DeleteContents();
 156
 157     if (m_commandProcessor)
 158         delete m_commandProcessor;
 159
 160     if (GetDocumentManager())
 161         GetDocumentManager()->RemoveDocument(this);
 162
 163     // Not safe to do here, since it'll invoke virtual view functions
 164     // expecting to see valid derived objects: and by the time we get here,
 165     // we've called destructors higher up.
 166     //DeleteAllViews();
 167 }
 168
 169 bool wxDocument::Close()
 170 {
 171     if (OnSaveModified())
 172         return OnCloseDocument();
 173     else
 174         return false;
 175 }
 176
 177 bool wxDocument::OnCloseDocument()
 178 {
 179     // Tell all views that we're about to close
 180     NotifyClosing();
 181     DeleteContents();
 182     Modify(false);
 183     return true;
 184 }
 185
 186 // Note that this implicitly deletes the document when the last view is
 187 // deleted.
 188 bool wxDocument::DeleteAllViews()
 189 {
 190     wxDocManager* manager = GetDocumentManager();
 191
 192     // first check if all views agree to be closed
 193     const wxList::iterator end = m_documentViews.end();
 194     for ( wxList::iterator i = m_documentViews.begin(); i != end; ++i )
 195     {
 196         wxView *view = (wxView *)*i;
 197         if ( !view->Close() )
 198             return false;
 199     }
 200
 201     // all views agreed to close, now do close them
 202     if ( m_documentViews.empty() )
 203     {
 204         // normally the document would be implicitly deleted when the last view
 205         // is, but if don't have any views, do it here instead
 206         if ( manager && manager->GetDocuments().Member(this) )
 207             delete this;
 208     }
 209     else // have views
 210     {
 211         // as we delete elements we iterate over, don't use the usual "from
 212         // begin to end" loop
 213         for ( ;; )
 214         {
 215             wxView *view = (wxView *)*m_documentViews.begin();
 216
 217             bool isLastOne = m_documentViews.size() == 1;
 218
 219             // this always deletes the node implicitly and if this is the last
 220             // view also deletes this object itself (also implicitly, great),
 221             // so we can't test for m_documentViews.empty() after calling this!
 222             delete view;
 223
 224             if ( isLastOne )
 225                 break;
 226         }
 227     }
 228
 229     return true;
 230 }
 231
 232 wxView *wxDocument::GetFirstView() const
 233 {
 234     if (m_documentViews.GetCount() == 0)
 235         return NULL;
 236     return (wxView *)m_documentViews.GetFirst()->GetData();
 237 }
 238
 239 wxDocManager *wxDocument::GetDocumentManager() const
 240 {
 241     return m_documentTemplate ? m_documentTemplate->GetDocumentManager() : NULL;
 242 }
 243
 244 bool wxDocument::OnNewDocument()
 245 {
 246     if ( !OnSaveModified() )
 247         return false;
 248
 249     DeleteContents();
 250     Modify(false);
 251     SetDocumentSaved(false);
 252
 253     const wxString name = GetDocumentManager()->MakeNewDocumentName();
 254     SetTitle(name);
 255     SetFilename(name, true);
 256
 257     return true;
 258 }
 259
 260 bool wxDocument::Save()
 261 {
 262     if (!IsModified() && m_savedYet)
 263         return true;
 264
 265     if ( m_documentFile.empty() || !m_savedYet )
 266         return SaveAs();
 267
 268     return OnSaveDocument(m_documentFile);
 269 }
 270
 271 bool wxDocument::SaveAs()
 272 {
 273     wxDocTemplate *docTemplate = GetDocumentTemplate();
 274     if (!docTemplate)
 275         return false;
 276
 277 #if defined(__WXMSW__) || defined(__WXGTK__) || defined(__WXMAC__)
 278     wxString filter = docTemplate->GetDescription() + wxT(" (") + docTemplate->GetFileFilter() + wxT(")|") + docTemplate->GetFileFilter();
 279
 280     // Now see if there are some other template with identical view and document
 281     // classes, whose filters may also be used.
 282
 283     if (docTemplate->GetViewClassInfo() && docTemplate->GetDocClassInfo())
 284     {
 285         wxList::compatibility_iterator node = docTemplate->GetDocumentManager()->GetTemplates().GetFirst();
 286         while (node)
 287         {
 288             wxDocTemplate *t = (wxDocTemplate*) node->GetData();
 289
 290             if (t->IsVisible() && t != docTemplate &&
 291                 t->GetViewClassInfo() == docTemplate->GetViewClassInfo() &&
 292                 t->GetDocClassInfo() == docTemplate->GetDocClassInfo())
 293             {
 294                 // add a '|' to separate this filter from the previous one
 295                 if ( !filter.empty() )
 296                     filter << wxT('|');
 297
 298                 filter << t->GetDescription() << wxT(" (") << t->GetFileFilter() << wxT(") |")
 299                        << t->GetFileFilter();
 300             }
 301
 302             node = node->GetNext();
 303         }
 304     }
 305 #else
 306     wxString filter = docTemplate->GetFileFilter() ;
 307 #endif
 308     wxString defaultDir = docTemplate->GetDirectory();
 309     if (defaultDir.IsEmpty())
 310         defaultDir = wxPathOnly(GetFilename());
 311
 312     wxString tmp = wxFileSelector(_("Save As"),
 313             defaultDir,
 314             wxFileNameFromPath(GetFilename()),
 315             docTemplate->GetDefaultExtension(),
 316             filter,
 317             wxFD_SAVE | wxFD_OVERWRITE_PROMPT,
 318             GetDocumentWindow());
 319
 320     if (tmp.empty())
 321         return false;
 322
 323     wxString fileName(tmp);
 324     wxString path, name, ext;
 325     wxSplitPath(fileName, & path, & name, & ext);
 326
 327     if (ext.empty())
 328     {
 329         fileName += wxT(".");
 330         fileName += docTemplate->GetDefaultExtension();
 331     }
 332
 333     SetFilename(fileName);
 334     SetTitle(wxFileNameFromPath(fileName));
 335
 336     // Notify the views that the filename has changed
 337     wxList::compatibility_iterator node = m_documentViews.GetFirst();
 338     while (node)
 339     {
 340         wxView *view = (wxView *)node->GetData();
 341         view->OnChangeFilename();
 342         node = node->GetNext();
 343     }
 344
 345     // Files that were not saved correctly are not added to the FileHistory.
 346     if (!OnSaveDocument(m_documentFile))
 347         return false;
 348
 349    // A file that doesn't use the default extension of its document template cannot be opened
 350    // via the FileHistory, so we do not add it.
 351    if (docTemplate->FileMatchesTemplate(fileName))
 352    {
 353        GetDocumentManager()->AddFileToHistory(fileName);
 354    }
 355    else
 356    {
 357        // The user will probably not be able to open the file again, so
 358        // we could warn about the wrong file-extension here.
 359    }
 360    return true;
 361 }
 362
 363 bool wxDocument::OnSaveDocument(const wxString& file)
 364 {
 365     if ( !file )
 366         return false;
 367
 368     if ( !DoSaveDocument(file) )
 369         return false;
 370
 371     Modify(false);
 372     SetFilename(file);
 373     SetDocumentSaved(true);
 374 #if defined( __WXOSX_MAC__ ) && wxOSX_USE_CARBON
 375     wxFileName fn(file) ;
 376     fn.MacSetDefaultTypeAndCreator() ;
 377 #endif
 378     return true;
 379 }
 380
 381 bool wxDocument::OnOpenDocument(const wxString& file)
 382 {
 383     if ( !OnSaveModified() )
 384         return false;
 385
 386     if ( !DoOpenDocument(file) )
 387         return false;
 388
 389     SetFilename(file, true);
 390     Modify(false);
 391     m_savedYet = true;
 392
 393     UpdateAllViews();
 394
 395     return true;
 396 }
 397
 398 #if wxUSE_STD_IOSTREAM
 399 wxSTD istream& wxDocument::LoadObject(wxSTD istream& stream)
 400 #else
 401 wxInputStream& wxDocument::LoadObject(wxInputStream& stream)
 402 #endif
 403 {
 404     return stream;
 405 }
 406
 407 #if wxUSE_STD_IOSTREAM
 408 wxSTD ostream& wxDocument::SaveObject(wxSTD ostream& stream)
 409 #else
 410 wxOutputStream& wxDocument::SaveObject(wxOutputStream& stream)
 411 #endif
 412 {
 413     return stream;
 414 }
 415
 416 bool wxDocument::Revert()
 417 {
 418     return false;
 419 }
 420
 421
 422 // Get title, or filename if no title, else unnamed
 423 #if WXWIN_COMPATIBILITY_2_8
 424 bool wxDocument::GetPrintableName(wxString& buf) const
 425 {
 426     // this function can not only be overridden by the user code but also
 427     // called by it so we need to ensure that we return the same thing as
 428     // GetUserReadableName() but we can't call it because this would result in
 429     // an infinite recursion, hence we use the helper DoGetUserReadableName()
 430     buf = DoGetUserReadableName();
 431
 432     return true;
 433 }
 434 #endif // WXWIN_COMPATIBILITY_2_8
 435
 436 wxString wxDocument::GetUserReadableName() const
 437 {
 438 #if WXWIN_COMPATIBILITY_2_8
 439     // we need to call the old virtual function to ensure that the overridden
 440     // version of it is still called
 441     wxString name;
 442     if ( GetPrintableName(name) )
 443         return name;
 444 #endif // WXWIN_COMPATIBILITY_2_8
 445
 446     return DoGetUserReadableName();
 447 }
 448
 449 wxString wxDocument::DoGetUserReadableName() const
 450 {
 451     if ( !m_documentTitle.empty() )
 452         return m_documentTitle;
 453
 454     if ( !m_documentFile.empty() )
 455         return wxFileNameFromPath(m_documentFile);
 456
 457     return _("unnamed");
 458 }
 459
 460 wxWindow *wxDocument::GetDocumentWindow() const
 461 {
 462     wxView *view = GetFirstView();
 463     if (view)
 464         return view->GetFrame();
 465     else
 466         return wxTheApp->GetTopWindow();
 467 }
 468
 469 wxCommandProcessor *wxDocument::OnCreateCommandProcessor()
 470 {
 471     return new wxCommandProcessor;
 472 }
 473
 474 // true if safe to close
 475 bool wxDocument::OnSaveModified()
 476 {
 477     if ( IsModified() )
 478     {
 479         switch ( wxMessageBox
 480                  (
 481                     wxString::Format
 482                     (
 483                      _("Do you want to save changes to document %s?"),
 484                      GetUserReadableName()
 485                     ),
 486                     wxTheApp->GetAppDisplayName(),
 487                     wxYES_NO | wxCANCEL | wxICON_QUESTION,
 488                     GetDocumentWindow()
 489                  ) )
 490         {
 491             case wxNO:
 492                 Modify(false);
 493                 break;
 494
 495             case wxYES:
 496                 return Save();
 497
 498             case wxCANCEL:
 499                 return false;
 500         }
 501     }
 502
 503     return true;
 504 }
 505
 506 bool wxDocument::Draw(wxDC& WXUNUSED(context))
 507 {
 508     return true;
 509 }
 510
 511 bool wxDocument::AddView(wxView *view)
 512 {
 513     if ( !m_documentViews.Member(view) )
 514     {
 515         m_documentViews.Append(view);
 516         OnChangedViewList();
 517     }
 518     return true;
 519 }
 520
 521 bool wxDocument::RemoveView(wxView *view)
 522 {
 523     (void)m_documentViews.DeleteObject(view);
 524     OnChangedViewList();
 525     return true;
 526 }
 527
 528 bool wxDocument::OnCreate(const wxString& WXUNUSED(path), long flags)
 529 {
 530     return GetDocumentTemplate()->CreateView(this, flags) != NULL;
 531 }
 532
 533 // Called after a view is added or removed.
 534 // The default implementation deletes the document if
 535 // there are no more views.
 536 void wxDocument::OnChangedViewList()
 537 {
 538     if ( m_documentViews.empty() && OnSaveModified() )
 539         delete this;
 540 }
 541
 542 void wxDocument::UpdateAllViews(wxView *sender, wxObject *hint)
 543 {
 544     wxList::compatibility_iterator node = m_documentViews.GetFirst();
 545     while (node)
 546     {
 547         wxView *view = (wxView *)node->GetData();
 548         if (view != sender)
 549             view->OnUpdate(sender, hint);
 550         node = node->GetNext();
 551     }
 552 }
 553
 554 void wxDocument::NotifyClosing()
 555 {
 556     wxList::compatibility_iterator node = m_documentViews.GetFirst();
 557     while (node)
 558     {
 559         wxView *view = (wxView *)node->GetData();
 560         view->OnClosingDocument();
 561         node = node->GetNext();
 562     }
 563 }
 564
 565 void wxDocument::SetFilename(const wxString& filename, bool notifyViews)
 566 {
 567     m_documentFile = filename;
 568     if ( notifyViews )
 569     {
 570         // Notify the views that the filename has changed
 571         wxList::compatibility_iterator node = m_documentViews.GetFirst();
 572         while (node)
 573         {
 574             wxView *view = (wxView *)node->GetData();
 575             view->OnChangeFilename();
 576             node = node->GetNext();
 577         }
 578     }
 579 }
 580
 581 bool wxDocument::DoSaveDocument(const wxString& file)
 582 {
 583 #if wxUSE_STD_IOSTREAM
 584     wxSTD ofstream store(file.mb_str(), wxSTD ios::binary);
 585     if ( !store )
 586 #else
 587     wxFileOutputStream store(file);
 588     if ( store.GetLastError() != wxSTREAM_NO_ERROR )
 589 #endif
 590     {
 591         wxLogError(_("File \"%s\" could not be opened for writing."), file);
 592         return false;
 593     }
 594
 595     if (!SaveObject(store))
 596     {
 597         wxLogError(_("Failed to save document to the file \"%s\"."), file);
 598         return false;
 599     }
 600
 601     return true;
 602 }
 603
 604 bool wxDocument::DoOpenDocument(const wxString& file)
 605 {
 606 #if wxUSE_STD_IOSTREAM
 607     wxSTD ifstream store(file.mb_str(), wxSTD ios::binary);
 608     if ( !store )
 609 #else
 610     wxFileInputStream store(file);
 611     if (store.GetLastError() != wxSTREAM_NO_ERROR)
 612 #endif
 613     {
 614         wxLogError(_("File \"%s\" could not be opened for reading."), file);
 615         return false;
 616     }
 617
 618 #if wxUSE_STD_IOSTREAM
 619     LoadObject(store);
 620     if ( !store )
 621 #else
 622     int res = LoadObject(store).GetLastError();
 623     if ( res != wxSTREAM_NO_ERROR && res != wxSTREAM_EOF )
 624 #endif
 625     {
 626         wxLogError(_("Failed to read document from the file \"%s\"."), file);
 627         return false;
 628     }
 629
 630     return true;
 631 }
 632
 633
 634 // ----------------------------------------------------------------------------
 635 // Document view
 636 // ----------------------------------------------------------------------------
 637
 638 wxView::wxView()
 639 {
 640     m_viewDocument = NULL;
 641
 642     m_viewFrame = NULL;
 643 }
 644
 645 wxView::~wxView()
 646 {
 647     GetDocumentManager()->ActivateView(this, false);
 648     m_viewDocument->RemoveView(this);
 649 }
 650
 651 bool wxView::TryValidator(wxEvent& event)
 652 {
 653     wxDocument * const doc = GetDocument();
 654     return doc && doc->ProcessEventHere(event);
 655 }
 656
 657 void wxView::OnActivateView(bool WXUNUSED(activate), wxView *WXUNUSED(activeView), wxView *WXUNUSED(deactiveView))
 658 {
 659 }
 660
 661 void wxView::OnPrint(wxDC *dc, wxObject *WXUNUSED(info))
 662 {
 663     OnDraw(dc);
 664 }
 665
 666 void wxView::OnUpdate(wxView *WXUNUSED(sender), wxObject *WXUNUSED(hint))
 667 {
 668 }
 669
 670 void wxView::OnChangeFilename()
 671 {
 672     // GetFrame can return wxWindow rather than wxTopLevelWindow due to
 673     // generic MDI implementation so use SetLabel rather than SetTitle.
 674     // It should cause SetTitle() for top level windows.
 675     wxWindow *win = GetFrame();
 676     if (!win) return;
 677
 678     wxDocument *doc = GetDocument();
 679     if (!doc) return;
 680
 681     win->SetLabel(doc->GetUserReadableName());
 682 }
 683
 684 void wxView::SetDocument(wxDocument *doc)
 685 {
 686     m_viewDocument = doc;
 687     if (doc)
 688         doc->AddView(this);
 689 }
 690
 691 bool wxView::Close(bool deleteWindow)
 692 {
 693     return OnClose(deleteWindow);
 694 }
 695
 696 void wxView::Activate(bool activate)
 697 {
 698     if (GetDocument() && GetDocumentManager())
 699     {
 700         OnActivateView(activate, this, GetDocumentManager()->GetCurrentView());
 701         GetDocumentManager()->ActivateView(this, activate);
 702     }
 703 }
 704
 705 bool wxView::OnClose(bool WXUNUSED(deleteWindow))
 706 {
 707     return GetDocument() ? GetDocument()->Close() : true;
 708 }
 709
 710 #if wxUSE_PRINTING_ARCHITECTURE
 711 wxPrintout *wxView::OnCreatePrintout()
 712 {
 713     return new wxDocPrintout(this);
 714 }
 715 #endif // wxUSE_PRINTING_ARCHITECTURE
 716
 717 // ----------------------------------------------------------------------------
 718 // wxDocTemplate
 719 // ----------------------------------------------------------------------------
 720
 721 wxDocTemplate::wxDocTemplate(wxDocManager *manager,
 722                              const wxString& descr,
 723                              const wxString& filter,
 724                              const wxString& dir,
 725                              const wxString& ext,
 726                              const wxString& docTypeName,
 727                              const wxString& viewTypeName,
 728                              wxClassInfo *docClassInfo,
 729                              wxClassInfo *viewClassInfo,
 730                              long flags)
 731 {
 732     m_documentManager = manager;
 733     m_description = descr;
 734     m_directory = dir;
 735     m_defaultExt = ext;
 736     m_fileFilter = filter;
 737     m_flags = flags;
 738     m_docTypeName = docTypeName;
 739     m_viewTypeName = viewTypeName;
 740     m_documentManager->AssociateTemplate(this);
 741
 742     m_docClassInfo = docClassInfo;
 743     m_viewClassInfo = viewClassInfo;
 744 }
 745
 746 wxDocTemplate::~wxDocTemplate()
 747 {
 748     m_documentManager->DisassociateTemplate(this);
 749 }
 750
 751 // Tries to dynamically construct an object of the right class.
 752 wxDocument *wxDocTemplate::CreateDocument(const wxString& path, long flags)
 753 {
 754     wxDocument * const doc = DoCreateDocument();
 755
 756     // VZ: this code doesn't delete doc if InitDocument() (i.e. doc->OnCreate())
 757     //     fails, is this intentional?
 758
 759     return doc && InitDocument(doc, path, flags) ? doc : NULL;
 760 }
 761
 762 bool
 763 wxDocTemplate::InitDocument(wxDocument* doc, const wxString& path, long flags)
 764 {
 765     doc->SetFilename(path);
 766     doc->SetDocumentTemplate(this);
 767     GetDocumentManager()->AddDocument(doc);
 768     doc->SetCommandProcessor(doc->OnCreateCommandProcessor());
 769
 770     if (doc->OnCreate(path, flags))
 771         return true;
 772     else
 773     {
 774         if (GetDocumentManager()->GetDocuments().Member(doc))
 775             doc->DeleteAllViews();
 776         return false;
 777     }
 778 }
 779
 780 wxView *wxDocTemplate::CreateView(wxDocument *doc, long flags)
 781 {
 782     wxView *view = DoCreateView();
 783     if ( view == NULL )
 784         return NULL;
 785
 786     view->SetDocument(doc);
 787     if (view->OnCreate(doc, flags))
 788     {
 789         return view;
 790     }
 791     else
 792     {
 793         delete view;
 794         return NULL;
 795     }
 796 }
 797
 798 // The default (very primitive) format detection: check is the extension is
 799 // that of the template
 800 bool wxDocTemplate::FileMatchesTemplate(const wxString& path)
 801 {
 802     wxStringTokenizer parser (GetFileFilter(), wxT(";"));
 803     wxString anything = wxT ("*");
 804     while (parser.HasMoreTokens())
 805     {
 806         wxString filter = parser.GetNextToken();
 807         wxString filterExt = FindExtension (filter);
 808         if ( filter.IsSameAs (anything)    ||
 809              filterExt.IsSameAs (anything) ||
 810              filterExt.IsSameAs (FindExtension (path)) )
 811             return true;
 812     }
 813     return GetDefaultExtension().IsSameAs(FindExtension(path));
 814 }
 815
 816 wxDocument *wxDocTemplate::DoCreateDocument()
 817 {
 818     if (!m_docClassInfo)
 819         return NULL;
 820
 821     return (wxDocument *)m_docClassInfo->CreateObject();
 822 }
 823
 824 wxView *wxDocTemplate::DoCreateView()
 825 {
 826     if (!m_viewClassInfo)
 827         return NULL;
 828
 829     return (wxView *)m_viewClassInfo->CreateObject();
 830 }
 831
 832 // ----------------------------------------------------------------------------
 833 // wxDocManager
 834 // ----------------------------------------------------------------------------
 835
 836 BEGIN_EVENT_TABLE(wxDocManager, wxEvtHandler)
 837     EVT_MENU(wxID_OPEN, wxDocManager::OnFileOpen)
 838     EVT_MENU(wxID_CLOSE, wxDocManager::OnFileClose)
 839     EVT_MENU(wxID_CLOSE_ALL, wxDocManager::OnFileCloseAll)
 840     EVT_MENU(wxID_REVERT, wxDocManager::OnFileRevert)
 841     EVT_MENU(wxID_NEW, wxDocManager::OnFileNew)
 842     EVT_MENU(wxID_SAVE, wxDocManager::OnFileSave)
 843     EVT_MENU(wxID_SAVEAS, wxDocManager::OnFileSaveAs)
 844     EVT_MENU(wxID_UNDO, wxDocManager::OnUndo)
 845     EVT_MENU(wxID_REDO, wxDocManager::OnRedo)
 846
 847     EVT_UPDATE_UI(wxID_OPEN, wxDocManager::OnUpdateFileOpen)
 848     EVT_UPDATE_UI(wxID_CLOSE, wxDocManager::OnUpdateDisableIfNoDoc)
 849     EVT_UPDATE_UI(wxID_CLOSE_ALL, wxDocManager::OnUpdateDisableIfNoDoc)
 850     EVT_UPDATE_UI(wxID_REVERT, wxDocManager::OnUpdateDisableIfNoDoc)
 851     EVT_UPDATE_UI(wxID_NEW, wxDocManager::OnUpdateFileNew)
 852     EVT_UPDATE_UI(wxID_SAVE, wxDocManager::OnUpdateFileSave)
 853     EVT_UPDATE_UI(wxID_SAVEAS, wxDocManager::OnUpdateDisableIfNoDoc)
 854     EVT_UPDATE_UI(wxID_UNDO, wxDocManager::OnUpdateUndo)
 855     EVT_UPDATE_UI(wxID_REDO, wxDocManager::OnUpdateRedo)
 856
 857 #if wxUSE_PRINTING_ARCHITECTURE
 858     EVT_MENU(wxID_PRINT, wxDocManager::OnPrint)
 859     EVT_MENU(wxID_PREVIEW, wxDocManager::OnPreview)
 860
 861     EVT_UPDATE_UI(wxID_PRINT, wxDocManager::OnUpdateDisableIfNoDoc)
 862     EVT_UPDATE_UI(wxID_PREVIEW, wxDocManager::OnUpdateDisableIfNoDoc)
 863 #endif
 864 END_EVENT_TABLE()
 865
 866 wxDocManager* wxDocManager::sm_docManager = NULL;
 867
 868 wxDocManager::wxDocManager(long WXUNUSED(flags), bool initialize)
 869 {
 870     wxASSERT_MSG( !sm_docManager, "multiple wxDocManagers not allowed" );
 871
 872     sm_docManager = this;
 873
 874     m_defaultDocumentNameCounter = 1;
 875     m_currentView = NULL;
 876     m_maxDocsOpen = INT_MAX;
 877     m_fileHistory = NULL;
 878     if ( initialize )
 879         Initialize();
 880 }
 881
 882 wxDocManager::~wxDocManager()
 883 {
 884     Clear();
 885     delete m_fileHistory;
 886     sm_docManager = NULL;
 887 }
 888
 889 // closes the specified document
 890 bool wxDocManager::CloseDocument(wxDocument* doc, bool force)
 891 {
 892     if (doc->Close() || force)
 893     {
 894         // Implicitly deletes the document when
 895         // the last view is deleted
 896         doc->DeleteAllViews();
 897
 898         // Check we're really deleted
 899         if (m_docs.Member(doc))
 900             delete doc;
 901
 902         return true;
 903     }
 904     return false;
 905 }
 906
 907 bool wxDocManager::CloseDocuments(bool force)
 908 {
 909     wxList::compatibility_iterator node = m_docs.GetFirst();
 910     while (node)
 911     {
 912         wxDocument *doc = (wxDocument *)node->GetData();
 913         wxList::compatibility_iterator next = node->GetNext();
 914
 915         if (!CloseDocument(doc, force))
 916             return false;
 917
 918         // This assumes that documents are not connected in
 919         // any way, i.e. deleting one document does NOT
 920         // delete another.
 921         node = next;
 922     }
 923     return true;
 924 }
 925
 926 bool wxDocManager::Clear(bool force)
 927 {
 928     if (!CloseDocuments(force))
 929         return false;
 930
 931     m_currentView = NULL;
 932
 933     wxList::compatibility_iterator node = m_templates.GetFirst();
 934     while (node)
 935     {
 936         wxDocTemplate *templ = (wxDocTemplate*) node->GetData();
 937         wxList::compatibility_iterator next = node->GetNext();
 938         delete templ;
 939         node = next;
 940     }
 941     return true;
 942 }
 943
 944 bool wxDocManager::Initialize()
 945 {
 946     m_fileHistory = OnCreateFileHistory();
 947     return true;
 948 }
 949
 950 wxFileHistory *wxDocManager::OnCreateFileHistory()
 951 {
 952     return new wxFileHistory;
 953 }
 954
 955 void wxDocManager::OnFileClose(wxCommandEvent& WXUNUSED(event))
 956 {
 957     wxDocument *doc = GetCurrentDocument();
 958     if (!doc)
 959         return;
 960     if (doc->Close())
 961     {
 962         doc->DeleteAllViews();
 963         if (m_docs.Member(doc))
 964             delete doc;
 965     }
 966 }
 967
 968 void wxDocManager::OnFileCloseAll(wxCommandEvent& WXUNUSED(event))
 969 {
 970     CloseDocuments(false);
 971 }
 972
 973 void wxDocManager::OnFileNew(wxCommandEvent& WXUNUSED(event))
 974 {
 975     CreateNewDocument();
 976 }
 977
 978 void wxDocManager::OnFileOpen(wxCommandEvent& WXUNUSED(event))
 979 {
 980     if ( !CreateDocument( wxEmptyString, 0) )
 981     {
 982         OnOpenFileFailure();
 983     }
 984 }
 985
 986 void wxDocManager::OnFileRevert(wxCommandEvent& WXUNUSED(event))
 987 {
 988     wxDocument *doc = GetCurrentDocument();
 989     if (!doc)
 990         return;
 991     doc->Revert();
 992 }
 993
 994 void wxDocManager::OnFileSave(wxCommandEvent& WXUNUSED(event))
 995 {
 996     wxDocument *doc = GetCurrentDocument();
 997     if (!doc)
 998         return;
 999     doc->Save();
1000 }
1001
1002 void wxDocManager::OnFileSaveAs(wxCommandEvent& WXUNUSED(event))
1003 {
1004     wxDocument *doc = GetCurrentDocument();
1005     if (!doc)
1006         return;
1007     doc->SaveAs();
1008 }
1009
1010 void wxDocManager::OnPrint(wxCommandEvent& WXUNUSED(event))
1011 {
1012 #if wxUSE_PRINTING_ARCHITECTURE
1013     wxView *view = GetCurrentView();
1014     if (!view)
1015         return;
1016
1017     wxPrintout *printout = view->OnCreatePrintout();
1018     if (printout)
1019     {
1020         wxPrinter printer;
1021         printer.Print(view->GetFrame(), printout, true);
1022
1023         delete printout;
1024     }
1025 #endif // wxUSE_PRINTING_ARCHITECTURE
1026 }
1027
1028 void wxDocManager::OnPreview(wxCommandEvent& WXUNUSED(event))
1029 {
1030 #if wxUSE_PRINTING_ARCHITECTURE
1031     wxView *view = GetCurrentView();
1032     if (!view)
1033         return;
1034
1035     wxPrintout *printout = view->OnCreatePrintout();
1036     if (printout)
1037     {
1038         // Pass two printout objects: for preview, and possible printing.
1039         wxPrintPreviewBase *preview = new wxPrintPreview(printout, view->OnCreatePrintout());
1040         if ( !preview->Ok() )
1041         {
1042             delete preview;
1043             wxMessageBox( _("Sorry, print preview needs a printer to be installed.") );
1044             return;
1045         }
1046
1047         wxPreviewFrame *frame = new wxPreviewFrame(preview, (wxFrame *)wxTheApp->GetTopWindow(), _("Print Preview"),
1048                 wxPoint(100, 100), wxSize(600, 650));
1049         frame->Centre(wxBOTH);
1050         frame->Initialize();
1051         frame->Show(true);
1052     }
1053 #endif // wxUSE_PRINTING_ARCHITECTURE
1054 }
1055
1056 void wxDocManager::OnUndo(wxCommandEvent& event)
1057 {
1058     wxDocument *doc = GetCurrentDocument();
1059     if (!doc)
1060         return;
1061     if (doc->GetCommandProcessor())
1062         doc->GetCommandProcessor()->Undo();
1063     else
1064         event.Skip();
1065 }
1066
1067 void wxDocManager::OnRedo(wxCommandEvent& event)
1068 {
1069     wxDocument *doc = GetCurrentDocument();
1070     if (!doc)
1071         return;
1072     if (doc->GetCommandProcessor())
1073         doc->GetCommandProcessor()->Redo();
1074     else
1075         event.Skip();
1076 }
1077
1078 // Handlers for UI update commands
1079
1080 void wxDocManager::OnUpdateFileOpen(wxUpdateUIEvent& event)
1081 {
1082     event.Enable( true );
1083 }
1084
1085 void wxDocManager::OnUpdateDisableIfNoDoc(wxUpdateUIEvent& event)
1086 {
1087     event.Enable( GetCurrentDocument() != NULL );
1088 }
1089
1090 void wxDocManager::OnUpdateFileNew(wxUpdateUIEvent& event)
1091 {
1092     event.Enable( true );
1093 }
1094
1095 void wxDocManager::OnUpdateFileSave(wxUpdateUIEvent& event)
1096 {
1097     wxDocument *doc = GetCurrentDocument();
1098     event.Enable( doc && doc->IsModified() );
1099 }
1100
1101 void wxDocManager::OnUpdateUndo(wxUpdateUIEvent& event)
1102 {
1103     wxDocument *doc = GetCurrentDocument();
1104     if (!doc)
1105         event.Enable(false);
1106     else if (!doc->GetCommandProcessor())
1107         event.Skip();
1108     else
1109     {
1110         event.Enable( doc->GetCommandProcessor()->CanUndo() );
1111         doc->GetCommandProcessor()->SetMenuStrings();
1112     }
1113 }
1114
1115 void wxDocManager::OnUpdateRedo(wxUpdateUIEvent& event)
1116 {
1117     wxDocument *doc = GetCurrentDocument();
1118     if (!doc)
1119         event.Enable(false);
1120     else if (!doc->GetCommandProcessor())
1121         event.Skip();
1122     else
1123     {
1124         event.Enable( doc->GetCommandProcessor()->CanRedo() );
1125         doc->GetCommandProcessor()->SetMenuStrings();
1126     }
1127 }
1128
1129 wxView *wxDocManager::GetCurrentView() const
1130 {
1131     if (m_currentView)
1132         return m_currentView;
1133     if (m_docs.GetCount() == 1)
1134     {
1135         wxDocument* doc = (wxDocument*) m_docs.GetFirst()->GetData();
1136         return doc->GetFirstView();
1137     }
1138     return NULL;
1139 }
1140
1141 bool wxDocManager::TryValidator(wxEvent& event)
1142 {
1143     wxView * const view = GetCurrentView();
1144     return view && view->ProcessEventHere(event);
1145 }
1146
1147 namespace
1148 {
1149
1150 // helper function: return only the visible templates
1151 wxDocTemplates GetVisibleTemplates(const wxList& allTemplates)
1152 {
1153     // select only the visible templates
1154     const size_t totalNumTemplates = allTemplates.GetCount();
1155     wxDocTemplates templates;
1156     if ( totalNumTemplates )
1157     {
1158         templates.reserve(totalNumTemplates);
1159
1160         for ( wxList::const_iterator i = allTemplates.begin(),
1161                                    end = allTemplates.end();
1162               i != end;
1163               ++i )
1164         {
1165             wxDocTemplate * const temp = (wxDocTemplate *)*i;
1166             if ( temp->IsVisible() )
1167                 templates.push_back(temp);
1168         }
1169     }
1170
1171     return templates;
1172 }
1173
1174 } // anonymous namespace
1175
1176 wxDocument *wxDocManager::CreateDocument(const wxString& pathOrig, long flags)
1177 {
1178     // this ought to be const but SelectDocumentType/Path() are not
1179     // const-correct and can't be changed as, being virtual, this risks
1180     // breaking user code overriding them
1181     wxDocTemplates templates(GetVisibleTemplates(m_templates));
1182     const size_t numTemplates = templates.size();
1183     if ( !numTemplates )
1184     {
1185         // no templates can be used, can't create document
1186         return NULL;
1187     }
1188
1189
1190     // normally user should select the template to use but wxDOC_SILENT flag we
1191     // choose one ourselves
1192     wxString path = pathOrig;   // may be modified below
1193     wxDocTemplate *temp;
1194     if ( flags & wxDOC_SILENT )
1195     {
1196         wxASSERT_MSG( !path.empty(),
1197                       "using empty path with wxDOC_SILENT doesn't make sense" );
1198
1199         temp = FindTemplateForPath(path);
1200         if ( !temp )
1201         {
1202             wxLogWarning(_("The format of file '%s' couldn't be determined."),
1203                          path);
1204         }
1205     }
1206     else // not silent, ask the user
1207     {
1208         // for the new file we need just the template, for an existing one we
1209         // need the template and the path, unless it's already specified
1210         if ( (flags & wxDOC_NEW) || !path.empty() )
1211             temp = SelectDocumentType(&templates[0], numTemplates);
1212         else
1213             temp = SelectDocumentPath(&templates[0], numTemplates, path, flags);
1214     }
1215
1216     if ( !temp )
1217         return NULL;
1218
1219     // check whether the document with this path is already opened
1220     if ( !path.empty() )
1221     {
1222         const wxFileName fn(path);
1223         for ( wxList::const_iterator i = m_docs.begin(); i != m_docs.end(); ++i )
1224         {
1225             wxDocument * const doc = (wxDocument*)*i;
1226
1227             if ( fn == doc->GetFilename() )
1228             {
1229                 // file already open, just activate it and return
1230                 if ( doc->GetFirstView() )
1231                 {
1232                     ActivateView(doc->GetFirstView());
1233                     if ( doc->GetDocumentWindow() )
1234                         doc->GetDocumentWindow()->SetFocus();
1235                     return doc;
1236                 }
1237             }
1238         }
1239     }
1240
1241
1242     // no, we need to create a new document
1243
1244
1245     // if we've reached the max number of docs, close the first one.
1246     if ( (int)GetDocuments().GetCount() >= m_maxDocsOpen )
1247     {
1248         if ( !CloseDocument((wxDocument *)GetDocuments().GetFirst()->GetData()) )
1249         {
1250             // can't open the new document if closing the old one failed
1251             return NULL;
1252         }
1253     }
1254
1255
1256     // do create and initialize the new document finally
1257     wxDocument * const docNew = temp->CreateDocument(path, flags);
1258     if ( !docNew )
1259         return NULL;
1260
1261     docNew->SetDocumentName(temp->GetDocumentName());
1262     docNew->SetDocumentTemplate(temp);
1263
1264     // call the appropriate function depending on whether we're creating a new
1265     // file or opening an existing one
1266     if ( !(flags & wxDOC_NEW ? docNew->OnNewDocument()
1267                              : docNew->OnOpenDocument(path)) )
1268     {
1269          // Document is implicitly deleted by DeleteAllViews
1270          docNew->DeleteAllViews();
1271          return NULL;
1272     }
1273
1274     // add the successfully opened file to MRU, but only if we're going to be
1275     // able to reopen it successfully later which requires the template for
1276     // this document to be retrievable from the file extension
1277     if ( !(flags & wxDOC_NEW) && temp->FileMatchesTemplate(path) )
1278         AddFileToHistory(path);
1279
1280     return docNew;
1281 }
1282
1283 wxView *wxDocManager::CreateView(wxDocument *doc, long flags)
1284 {
1285     wxDocTemplates templates(GetVisibleTemplates(m_templates));
1286     const size_t numTemplates = templates.size();
1287
1288     if ( numTemplates == 0 )
1289         return NULL;
1290
1291     wxDocTemplate * const
1292     temp = numTemplates == 1 ? templates[0]
1293                              : SelectViewType(&templates[0], numTemplates);
1294
1295     if ( !temp )
1296         return NULL;
1297
1298     wxView *view = temp->CreateView(doc, flags);
1299     if ( view )
1300         view->SetViewName(temp->GetViewName());
1301     return view;
1302 }
1303
1304 // Not yet implemented
1305 void
1306 wxDocManager::DeleteTemplate(wxDocTemplate *WXUNUSED(temp), long WXUNUSED(flags))
1307 {
1308 }
1309
1310 // Not yet implemented
1311 bool wxDocManager::FlushDoc(wxDocument *WXUNUSED(doc))
1312 {
1313     return false;
1314 }
1315
1316 wxDocument *wxDocManager::GetCurrentDocument() const
1317 {
1318     wxView *view = GetCurrentView();
1319     if (view)
1320         return view->GetDocument();
1321     else
1322         return NULL;
1323 }
1324
1325 // Make a default name for a new document
1326 #if WXWIN_COMPATIBILITY_2_8
1327 bool wxDocManager::MakeDefaultName(wxString& WXUNUSED(name))
1328 {
1329     // we consider that this function can only be overridden by the user code,
1330     // not called by it as it only makes sense to call it internally, so we
1331     // don't bother to return anything from here
1332     return false;
1333 }
1334 #endif // WXWIN_COMPATIBILITY_2_8
1335
1336 wxString wxDocManager::MakeNewDocumentName()
1337 {
1338     wxString name;
1339
1340 #if WXWIN_COMPATIBILITY_2_8
1341     if ( !MakeDefaultName(name) )
1342 #endif // WXWIN_COMPATIBILITY_2_8
1343     {
1344         name.Printf(_("unnamed%d"), m_defaultDocumentNameCounter);
1345         m_defaultDocumentNameCounter++;
1346     }
1347
1348     return name;
1349 }
1350
1351 // Make a frame title (override this to do something different)
1352 // If docName is empty, a document is not currently active.
1353 wxString wxDocManager::MakeFrameTitle(wxDocument* doc)
1354 {
1355     wxString appName = wxTheApp->GetAppDisplayName();
1356     wxString title;
1357     if (!doc)
1358         title = appName;
1359     else
1360     {
1361         wxString docName = doc->GetUserReadableName();
1362         title = docName + wxString(_(" - ")) + appName;
1363     }
1364     return title;
1365 }
1366
1367
1368 // Not yet implemented
1369 wxDocTemplate *wxDocManager::MatchTemplate(const wxString& WXUNUSED(path))
1370 {
1371     return NULL;
1372 }
1373
1374 // File history management
1375 void wxDocManager::AddFileToHistory(const wxString& file)
1376 {
1377     if (m_fileHistory)
1378         m_fileHistory->AddFileToHistory(file);
1379 }
1380
1381 void wxDocManager::RemoveFileFromHistory(size_t i)
1382 {
1383     if (m_fileHistory)
1384         m_fileHistory->RemoveFileFromHistory(i);
1385 }
1386
1387 wxString wxDocManager::GetHistoryFile(size_t i) const
1388 {
1389     wxString histFile;
1390
1391     if (m_fileHistory)
1392         histFile = m_fileHistory->GetHistoryFile(i);
1393
1394     return histFile;
1395 }
1396
1397 void wxDocManager::FileHistoryUseMenu(wxMenu *menu)
1398 {
1399     if (m_fileHistory)
1400         m_fileHistory->UseMenu(menu);
1401 }
1402
1403 void wxDocManager::FileHistoryRemoveMenu(wxMenu *menu)
1404 {
1405     if (m_fileHistory)
1406         m_fileHistory->RemoveMenu(menu);
1407 }
1408
1409 #if wxUSE_CONFIG
1410 void wxDocManager::FileHistoryLoad(const wxConfigBase& config)
1411 {
1412     if (m_fileHistory)
1413         m_fileHistory->Load(config);
1414 }
1415
1416 void wxDocManager::FileHistorySave(wxConfigBase& config)
1417 {
1418     if (m_fileHistory)
1419         m_fileHistory->Save(config);
1420 }
1421 #endif
1422
1423 void wxDocManager::FileHistoryAddFilesToMenu(wxMenu* menu)
1424 {
1425     if (m_fileHistory)
1426         m_fileHistory->AddFilesToMenu(menu);
1427 }
1428
1429 void wxDocManager::FileHistoryAddFilesToMenu()
1430 {
1431     if (m_fileHistory)
1432         m_fileHistory->AddFilesToMenu();
1433 }
1434
1435 size_t wxDocManager::GetHistoryFilesCount() const
1436 {
1437     return m_fileHistory ? m_fileHistory->GetCount() : 0;
1438 }
1439
1440
1441 // Find out the document template via matching in the document file format
1442 // against that of the template
1443 wxDocTemplate *wxDocManager::FindTemplateForPath(const wxString& path)
1444 {
1445     wxDocTemplate *theTemplate = NULL;
1446
1447     // Find the template which this extension corresponds to
1448     for (size_t i = 0; i < m_templates.GetCount(); i++)
1449     {
1450         wxDocTemplate *temp = (wxDocTemplate *)m_templates.Item(i)->GetData();
1451         if ( temp->FileMatchesTemplate(path) )
1452         {
1453             theTemplate = temp;
1454             break;
1455         }
1456     }
1457     return theTemplate;
1458 }
1459
1460 // Prompts user to open a file, using file specs in templates.
1461 // Must extend the file selector dialog or implement own; OR
1462 // match the extension to the template extension.
1463
1464 wxDocTemplate *wxDocManager::SelectDocumentPath(wxDocTemplate **templates,
1465                                                 int noTemplates,
1466                                                 wxString& path,
1467                                                 long WXUNUSED(flags),
1468                                                 bool WXUNUSED(save))
1469 {
1470     // We can only have multiple filters in Windows and GTK
1471 #if defined(__WXMSW__) || defined(__WXGTK__) || defined(__WXMAC__)
1472     wxString descrBuf;
1473
1474     int i;
1475     for (i = 0; i < noTemplates; i++)
1476     {
1477         if (templates[i]->IsVisible())
1478         {
1479             // add a '|' to separate this filter from the previous one
1480             if ( !descrBuf.empty() )
1481                 descrBuf << wxT('|');
1482
1483             descrBuf << templates[i]->GetDescription()
1484                 << wxT(" (") << templates[i]->GetFileFilter() << wxT(") |")
1485                 << templates[i]->GetFileFilter();
1486         }
1487     }
1488 #else
1489     wxString descrBuf = wxT("*.*");
1490     wxUnusedVar(noTemplates);
1491 #endif
1492
1493     int FilterIndex = -1;
1494
1495     wxWindow* parent = wxFindSuitableParent();
1496
1497     wxString pathTmp = wxFileSelectorEx(_("Open File"),
1498                                         m_lastDirectory,
1499                                         wxEmptyString,
1500                                         &FilterIndex,
1501                                         descrBuf,
1502                                         0,
1503                                         parent);
1504
1505     wxDocTemplate *theTemplate = NULL;
1506     if (!pathTmp.empty())
1507     {
1508         if (!wxFileExists(pathTmp))
1509         {
1510             wxString msgTitle;
1511             if (!wxTheApp->GetAppDisplayName().empty())
1512                 msgTitle = wxTheApp->GetAppDisplayName();
1513             else
1514                 msgTitle = wxString(_("File error"));
1515
1516             (void)wxMessageBox(_("Sorry, could not open this file."), msgTitle, wxOK | wxICON_EXCLAMATION,
1517                 parent);
1518
1519             path = wxEmptyString;
1520             return NULL;
1521         }
1522         m_lastDirectory = wxPathOnly(pathTmp);
1523
1524         path = pathTmp;
1525
1526         // first choose the template using the extension, if this fails (i.e.
1527         // wxFileSelectorEx() didn't fill it), then use the path
1528         if ( FilterIndex != -1 )
1529             theTemplate = templates[FilterIndex];
1530         if ( !theTemplate )
1531             theTemplate = FindTemplateForPath(path);
1532         if ( !theTemplate )
1533         {
1534             // Since we do not add files with non-default extensions to the FileHistory this
1535             // can only happen if the application changes the allowed templates in runtime.
1536             (void)wxMessageBox(_("Sorry, the format for this file is unknown."),
1537                                 _("Open File"),
1538                                 wxOK | wxICON_EXCLAMATION, wxFindSuitableParent());
1539         }
1540     }
1541     else
1542     {
1543         path = wxEmptyString;
1544     }
1545
1546     return theTemplate;
1547 }
1548
1549 wxDocTemplate *wxDocManager::SelectDocumentType(wxDocTemplate **templates,
1550                                                 int noTemplates, bool sort)
1551 {
1552     wxArrayString strings;
1553     wxDocTemplate **data = new wxDocTemplate *[noTemplates];
1554     int i;
1555     int n = 0;
1556
1557     for (i = 0; i < noTemplates; i++)
1558     {
1559         if (templates[i]->IsVisible())
1560         {
1561             int j;
1562             bool want = true;
1563             for (j = 0; j < n; j++)
1564             {
1565                 //filter out NOT unique documents + view combinations
1566                 if ( templates[i]->m_docTypeName == data[j]->m_docTypeName &&
1567                      templates[i]->m_viewTypeName == data[j]->m_viewTypeName
1568                    )
1569                     want = false;
1570             }
1571
1572             if ( want )
1573             {
1574                 strings.Add(templates[i]->m_description);
1575
1576                 data[n] = templates[i];
1577                 n ++;
1578             }
1579         }
1580     }  // for
1581
1582     if (sort)
1583     {
1584         strings.Sort(); // ascending sort
1585         // Yes, this will be slow, but template lists
1586         // are typically short.
1587         int j;
1588         n = strings.Count();
1589         for (i = 0; i < n; i++)
1590         {
1591             for (j = 0; j < noTemplates; j++)
1592             {
1593                 if (strings[i] == templates[j]->m_description)
1594                     data[i] = templates[j];
1595             }
1596         }
1597     }
1598
1599     wxDocTemplate *theTemplate;
1600
1601     switch ( n )
1602     {
1603         case 0:
1604             // no visible templates, hence nothing to choose from
1605             theTemplate = NULL;
1606             break;
1607
1608         case 1:
1609             // don't propose the user to choose if he has no choice
1610             theTemplate = data[0];
1611             break;
1612
1613         default:
1614             // propose the user to choose one of several
1615             theTemplate = (wxDocTemplate *)wxGetSingleChoiceData
1616                           (
1617                             _("Select a document template"),
1618                             _("Templates"),
1619                             strings,
1620                             (void **)data,
1621                             wxFindSuitableParent()
1622                           );
1623     }
1624
1625     delete[] data;
1626
1627     return theTemplate;
1628 }
1629
1630 wxDocTemplate *wxDocManager::SelectViewType(wxDocTemplate **templates,
1631                                             int noTemplates, bool sort)
1632 {
1633     wxArrayString strings;
1634     wxDocTemplate **data = new wxDocTemplate *[noTemplates];
1635     int i;
1636     int n = 0;
1637
1638     for (i = 0; i < noTemplates; i++)
1639     {
1640         wxDocTemplate *templ = templates[i];
1641         if ( templ->IsVisible() && !templ->GetViewName().empty() )
1642         {
1643             int j;
1644             bool want = true;
1645             for (j = 0; j < n; j++)
1646             {
1647                 //filter out NOT unique views
1648                 if ( templates[i]->m_viewTypeName == data[j]->m_viewTypeName )
1649                     want = false;
1650             }
1651
1652             if ( want )
1653             {
1654                 strings.Add(templ->m_viewTypeName);
1655                 data[n] = templ;
1656                 n ++;
1657             }
1658         }
1659     }
1660
1661     if (sort)
1662     {
1663         strings.Sort(); // ascending sort
1664         // Yes, this will be slow, but template lists
1665         // are typically short.
1666         int j;
1667         n = strings.Count();
1668         for (i = 0; i < n; i++)
1669         {
1670             for (j = 0; j < noTemplates; j++)
1671             {
1672                 if (strings[i] == templates[j]->m_viewTypeName)
1673                     data[i] = templates[j];
1674             }
1675         }
1676     }
1677
1678     wxDocTemplate *theTemplate;
1679
1680     // the same logic as above
1681     switch ( n )
1682     {
1683         case 0:
1684             theTemplate = NULL;
1685             break;
1686
1687         case 1:
1688             theTemplate = data[0];
1689             break;
1690
1691         default:
1692             theTemplate = (wxDocTemplate *)wxGetSingleChoiceData
1693                           (
1694                             _("Select a document view"),
1695                             _("Views"),
1696                             strings,
1697                             (void **)data,
1698                             wxFindSuitableParent()
1699                           );
1700
1701     }
1702
1703     delete[] data;
1704     return theTemplate;
1705 }
1706
1707 void wxDocManager::AssociateTemplate(wxDocTemplate *temp)
1708 {
1709     if (!m_templates.Member(temp))
1710         m_templates.Append(temp);
1711 }
1712
1713 void wxDocManager::DisassociateTemplate(wxDocTemplate *temp)
1714 {
1715     m_templates.DeleteObject(temp);
1716 }
1717
1718 // Add and remove a document from the manager's list
1719 void wxDocManager::AddDocument(wxDocument *doc)
1720 {
1721     if (!m_docs.Member(doc))
1722         m_docs.Append(doc);
1723 }
1724
1725 void wxDocManager::RemoveDocument(wxDocument *doc)
1726 {
1727     m_docs.DeleteObject(doc);
1728 }
1729
1730 // Views or windows should inform the document manager
1731 // when a view is going in or out of focus
1732 void wxDocManager::ActivateView(wxView *view, bool activate)
1733 {
1734     if ( activate )
1735     {
1736         m_currentView = view;
1737     }
1738     else // deactivate
1739     {
1740         if ( m_currentView == view )
1741         {
1742             // don't keep stale pointer
1743             m_currentView = NULL;
1744         }
1745     }
1746 }
1747
1748 // ----------------------------------------------------------------------------
1749 // Default document child frame
1750 // ----------------------------------------------------------------------------
1751
1752 BEGIN_EVENT_TABLE(wxDocChildFrame, wxFrame)
1753     EVT_ACTIVATE(wxDocChildFrame::OnActivate)
1754     EVT_CLOSE(wxDocChildFrame::OnCloseWindow)
1755 END_EVENT_TABLE()
1756
1757 wxDocChildFrame::wxDocChildFrame(wxDocument *doc,
1758                                  wxView *view,
1759                                  wxFrame *frame,
1760                                  wxWindowID id,
1761                                  const wxString& title,
1762                                  const wxPoint& pos,
1763                                  const wxSize& size,
1764                                  long style,
1765                                  const wxString& name)
1766                : wxFrame(frame, id, title, pos, size, style, name)
1767 {
1768     m_childDocument = doc;
1769     m_childView = view;
1770     if (view)
1771         view->SetFrame(this);
1772 }
1773
1774 bool wxDocChildFrame::TryValidator(wxEvent& event)
1775 {
1776     if ( !m_childView )
1777         return false;
1778
1779     // FIXME: why is this needed here?
1780     m_childView->Activate(true);
1781
1782     return m_childView->ProcessEventHere(event);
1783 }
1784
1785 void wxDocChildFrame::OnActivate(wxActivateEvent& event)
1786 {
1787     wxFrame::OnActivate(event);
1788
1789     if (m_childView)
1790         m_childView->Activate(event.GetActive());
1791 }
1792
1793 void wxDocChildFrame::OnCloseWindow(wxCloseEvent& event)
1794 {
1795     if (m_childView)
1796     {
1797         bool ans = event.CanVeto()
1798                     ? m_childView->Close(false) // false means don't delete associated window
1799                     : true; // Must delete.
1800
1801         if (ans)
1802         {
1803             m_childView->Activate(false);
1804             delete m_childView;
1805             m_childView = NULL;
1806             m_childDocument = NULL;
1807
1808             this->Destroy();
1809         }
1810         else
1811             event.Veto();
1812     }
1813     else
1814         event.Veto();
1815 }
1816
1817 // ----------------------------------------------------------------------------
1818 // Default parent frame
1819 // ----------------------------------------------------------------------------
1820
1821 BEGIN_EVENT_TABLE(wxDocParentFrame, wxFrame)
1822     EVT_MENU(wxID_EXIT, wxDocParentFrame::OnExit)
1823     EVT_MENU_RANGE(wxID_FILE1, wxID_FILE9, wxDocParentFrame::OnMRUFile)
1824     EVT_CLOSE(wxDocParentFrame::OnCloseWindow)
1825 END_EVENT_TABLE()
1826
1827 wxDocParentFrame::wxDocParentFrame()
1828 {
1829     m_docManager = NULL;
1830 }
1831
1832 wxDocParentFrame::wxDocParentFrame(wxDocManager *manager,
1833                                    wxFrame *frame,
1834                                    wxWindowID id,
1835                                    const wxString& title,
1836                                    const wxPoint& pos,
1837                                    const wxSize& size,
1838                                    long style,
1839                                    const wxString& name)
1840                 : wxFrame(frame, id, title, pos, size, style, name)
1841 {
1842     m_docManager = manager;
1843 }
1844
1845 bool wxDocParentFrame::Create(wxDocManager *manager,
1846                               wxFrame *frame,
1847                               wxWindowID id,
1848                               const wxString& title,
1849                               const wxPoint& pos,
1850                               const wxSize& size,
1851                               long style,
1852                               const wxString& name)
1853 {
1854     m_docManager = manager;
1855     return base_type::Create(frame, id, title, pos, size, style, name);
1856 }
1857
1858 void wxDocParentFrame::OnExit(wxCommandEvent& WXUNUSED(event))
1859 {
1860     Close();
1861 }
1862
1863 void wxDocParentFrame::OnMRUFile(wxCommandEvent& event)
1864 {
1865     int n = event.GetId() - wxID_FILE1;  // the index in MRU list
1866     wxString filename(m_docManager->GetHistoryFile(n));
1867     if ( filename.empty() )
1868         return;
1869
1870     wxString errMsg; // must contain exactly one "%s" if non-empty
1871     if ( wxFile::Exists(filename) )
1872     {
1873         // try to open it
1874         if ( m_docManager->CreateDocument(filename, wxDOC_SILENT) )
1875             return;
1876
1877         errMsg = _("The file '%s' couldn't be opened.");
1878     }
1879     else // file doesn't exist
1880     {
1881         errMsg = _("The file '%s' doesn't exist and couldn't be opened.");
1882     }
1883
1884
1885     wxASSERT_MSG( !errMsg.empty(), "should have an error message" );
1886
1887     // remove the file which we can't open from the MRU list
1888     m_docManager->RemoveFileFromHistory(n);
1889
1890     // and tell the user about it
1891     wxLogError(errMsg + '\n' +
1892                _("It has been removed from the most recently used files list."),
1893                filename);
1894 }
1895
1896 // Extend event processing to search the view's event table
1897 bool wxDocParentFrame::TryValidator(wxEvent& event)
1898 {
1899     return m_docManager && m_docManager->ProcessEventHere(event);
1900 }
1901
1902 // Define the behaviour for the frame closing
1903 // - must delete all frames except for the main one.
1904 void wxDocParentFrame::OnCloseWindow(wxCloseEvent& event)
1905 {
1906     if (m_docManager->Clear(!event.CanVeto()))
1907     {
1908         this->Destroy();
1909     }
1910     else
1911         event.Veto();
1912 }
1913
1914 #if wxUSE_PRINTING_ARCHITECTURE
1915
1916 wxDocPrintout::wxDocPrintout(wxView *view, const wxString& title)
1917              : wxPrintout(title)
1918 {
1919     m_printoutView = view;
1920 }
1921
1922 bool wxDocPrintout::OnPrintPage(int WXUNUSED(page))
1923 {
1924     wxDC *dc = GetDC();
1925
1926     // Get the logical pixels per inch of screen and printer
1927     int ppiScreenX, ppiScreenY;
1928     GetPPIScreen(&ppiScreenX, &ppiScreenY);
1929     wxUnusedVar(ppiScreenY);
1930     int ppiPrinterX, ppiPrinterY;
1931     GetPPIPrinter(&ppiPrinterX, &ppiPrinterY);
1932     wxUnusedVar(ppiPrinterY);
1933
1934     // This scales the DC so that the printout roughly represents the
1935     // the screen scaling. The text point size _should_ be the right size
1936     // but in fact is too small for some reason. This is a detail that will
1937     // need to be addressed at some point but can be fudged for the
1938     // moment.
1939     float scale = (float)((float)ppiPrinterX/(float)ppiScreenX);
1940
1941     // Now we have to check in case our real page size is reduced
1942     // (e.g. because we're drawing to a print preview memory DC)
1943     int pageWidth, pageHeight;
1944     int w, h;
1945     dc->GetSize(&w, &h);
1946     GetPageSizePixels(&pageWidth, &pageHeight);
1947     wxUnusedVar(pageHeight);
1948
1949     // If printer pageWidth == current DC width, then this doesn't
1950     // change. But w might be the preview bitmap width, so scale down.
1951     float overallScale = scale * (float)(w/(float)pageWidth);
1952     dc->SetUserScale(overallScale, overallScale);
1953
1954     if (m_printoutView)
1955     {
1956         m_printoutView->OnDraw(dc);
1957     }
1958     return true;
1959 }
1960
1961 bool wxDocPrintout::HasPage(int pageNum)
1962 {
1963     return (pageNum == 1);
1964 }
1965
1966 bool wxDocPrintout::OnBeginDocument(int startPage, int endPage)
1967 {
1968     if (!wxPrintout::OnBeginDocument(startPage, endPage))
1969         return false;
1970
1971     return true;
1972 }
1973
1974 void wxDocPrintout::GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, int *selPageTo)
1975 {
1976     *minPage = 1;
1977     *maxPage = 1;
1978     *selPageFrom = 1;
1979     *selPageTo = 1;
1980 }
1981
1982 #endif // wxUSE_PRINTING_ARCHITECTURE
1983
1984 // ----------------------------------------------------------------------------
1985 // File history (a.k.a. MRU, most recently used, files list)
1986 // ----------------------------------------------------------------------------
1987
1988 wxFileHistory::wxFileHistory(size_t maxFiles, wxWindowID idBase)
1989 {
1990     m_fileMaxFiles = maxFiles;
1991     m_idBase = idBase;
1992 }
1993
1994 void wxFileHistory::AddFileToHistory(const wxString& file)
1995 {
1996     // check if we don't already have this file
1997     const wxFileName fnNew(file);
1998     size_t i,
1999            numFiles = m_fileHistory.size();
2000     for ( i = 0; i < numFiles; i++ )
2001     {
2002         if ( fnNew == m_fileHistory[i] )
2003         {
2004             // we do have it, move it to the top of the history
2005             RemoveFileFromHistory(i);
2006             numFiles--;
2007             break;
2008         }
2009     }
2010
2011     // if we already have a full history, delete the one at the end
2012     if ( numFiles == m_fileMaxFiles )
2013     {
2014         RemoveFileFromHistory(--numFiles);
2015     }
2016     else // add a new menu item to all file menus (will be updated below)
2017     {
2018         for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2019               node;
2020               node = node->GetNext() )
2021         {
2022             wxMenu * const menu = (wxMenu *)node->GetData();
2023
2024             if ( !numFiles && menu->GetMenuItemCount() )
2025                 menu->AppendSeparator();
2026
2027             // label doesn't matter, it will be set below anyhow, but it can't
2028             // be empty (this is supposed to indicate a stock item)
2029             menu->Append(m_idBase + numFiles, " ");
2030         }
2031     }
2032
2033
2034     // insert the new file in the beginning of the file history
2035     m_fileHistory.insert(m_fileHistory.begin(), file);
2036     numFiles++;
2037
2038     // update the labels in all menus
2039     for ( i = 0; i < numFiles; i++ )
2040     {
2041         // if in same directory just show the filename; otherwise the full path
2042         const wxFileName fnOld(m_fileHistory[i]);
2043
2044         wxString pathInMenu;
2045         if ( fnOld.GetPath() == fnNew.GetPath() )
2046         {
2047             pathInMenu = fnOld.GetFullName();
2048         }
2049         else // file in different directory
2050         {
2051             // absolute path; could also set relative path
2052             pathInMenu = m_fileHistory[i];
2053         }
2054
2055         for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2056               node;
2057               node = node->GetNext() )
2058         {
2059             wxMenu * const menu = (wxMenu *)node->GetData();
2060
2061             menu->SetLabel(m_idBase + i, GetMRUEntryLabel(i, pathInMenu));
2062         }
2063     }
2064 }
2065
2066 void wxFileHistory::RemoveFileFromHistory(size_t i)
2067 {
2068     size_t numFiles = m_fileHistory.size();
2069     wxCHECK_RET( i < numFiles,
2070                  wxT("invalid index in wxFileHistory::RemoveFileFromHistory") );
2071
2072     // delete the element from the array
2073     m_fileHistory.RemoveAt(i);
2074     numFiles--;
2075
2076     for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2077           node;
2078           node = node->GetNext() )
2079     {
2080         wxMenu * const menu = (wxMenu *) node->GetData();
2081
2082         // shift filenames up
2083         for ( size_t j = i; j < numFiles; j++ )
2084         {
2085             menu->SetLabel(m_idBase + j, GetMRUEntryLabel(j, m_fileHistory[j]));
2086         }
2087
2088         // delete the last menu item which is unused now
2089         const wxWindowID lastItemId = m_idBase + numFiles;
2090         if ( menu->FindItem(lastItemId) )
2091             menu->Delete(lastItemId);
2092
2093         // delete the last separator too if no more files are left
2094         if ( m_fileHistory.empty() )
2095         {
2096             const wxMenuItemList::compatibility_iterator
2097                 nodeLast = menu->GetMenuItems().GetLast();
2098             if ( nodeLast )
2099             {
2100                 wxMenuItem * const lastMenuItem = nodeLast->GetData();
2101                 if ( lastMenuItem->IsSeparator() )
2102                     menu->Delete(lastMenuItem);
2103             }
2104             //else: menu is empty somehow
2105         }
2106     }
2107 }
2108
2109 void wxFileHistory::UseMenu(wxMenu *menu)
2110 {
2111     if ( !m_fileMenus.Member(menu) )
2112         m_fileMenus.Append(menu);
2113 }
2114
2115 void wxFileHistory::RemoveMenu(wxMenu *menu)
2116 {
2117     m_fileMenus.DeleteObject(menu);
2118 }
2119
2120 #if wxUSE_CONFIG
2121 void wxFileHistory::Load(const wxConfigBase& config)
2122 {
2123     m_fileHistory.Clear();
2124
2125     wxString buf;
2126     buf.Printf(wxT("file%d"), 1);
2127
2128     wxString historyFile;
2129     while ((m_fileHistory.GetCount() < m_fileMaxFiles) &&
2130            config.Read(buf, &historyFile) && !historyFile.empty())
2131     {
2132         m_fileHistory.Add(historyFile);
2133
2134         buf.Printf(wxT("file%d"), (int)m_fileHistory.GetCount()+1);
2135         historyFile = wxEmptyString;
2136     }
2137
2138     AddFilesToMenu();
2139 }
2140
2141 void wxFileHistory::Save(wxConfigBase& config)
2142 {
2143     size_t i;
2144     for (i = 0; i < m_fileMaxFiles; i++)
2145     {
2146         wxString buf;
2147         buf.Printf(wxT("file%d"), (int)i+1);
2148         if (i < m_fileHistory.GetCount())
2149             config.Write(buf, wxString(m_fileHistory[i]));
2150         else
2151             config.Write(buf, wxEmptyString);
2152     }
2153 }
2154 #endif // wxUSE_CONFIG
2155
2156 void wxFileHistory::AddFilesToMenu()
2157 {
2158     if ( m_fileHistory.empty() )
2159         return;
2160
2161     for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2162           node;
2163           node = node->GetNext() )
2164     {
2165         AddFilesToMenu((wxMenu *) node->GetData());
2166     }
2167 }
2168
2169 void wxFileHistory::AddFilesToMenu(wxMenu* menu)
2170 {
2171     if ( m_fileHistory.empty() )
2172         return;
2173
2174     if ( menu->GetMenuItemCount() )
2175         menu->AppendSeparator();
2176
2177     for ( size_t i = 0; i < m_fileHistory.GetCount(); i++ )
2178     {
2179         menu->Append(m_idBase + i, GetMRUEntryLabel(i, m_fileHistory[i]));
2180     }
2181 }
2182
2183 // ----------------------------------------------------------------------------
2184 // Permits compatibility with existing file formats and functions that
2185 // manipulate files directly
2186 // ----------------------------------------------------------------------------
2187
2188 #if wxUSE_STD_IOSTREAM
2189
2190 bool wxTransferFileToStream(const wxString& filename, wxSTD ostream& stream)
2191 {
2192     wxFFile file(filename, _T("rb"));
2193     if ( !file.IsOpened() )
2194         return false;
2195
2196     char buf[4096];
2197
2198     size_t nRead;
2199     do
2200     {
2201         nRead = file.Read(buf, WXSIZEOF(buf));
2202         if ( file.Error() )
2203             return false;
2204
2205         stream.write(buf, nRead);
2206         if ( !stream )
2207             return false;
2208     }
2209     while ( !file.Eof() );
2210
2211     return true;
2212 }
2213
2214 bool wxTransferStreamToFile(wxSTD istream& stream, const wxString& filename)
2215 {
2216     wxFFile file(filename, _T("wb"));
2217     if ( !file.IsOpened() )
2218         return false;
2219
2220     char buf[4096];
2221     do
2222     {
2223         stream.read(buf, WXSIZEOF(buf));
2224         if ( !stream.bad() ) // fail may be set on EOF, don't use operator!()
2225         {
2226             if ( !file.Write(buf, stream.gcount()) )
2227                 return false;
2228         }
2229     }
2230     while ( !stream.eof() );
2231
2232     return true;
2233 }
2234
2235 #else // !wxUSE_STD_IOSTREAM
2236
2237 bool wxTransferFileToStream(const wxString& filename, wxOutputStream& stream)
2238 {
2239     wxFFile file(filename, _T("rb"));
2240     if ( !file.IsOpened() )
2241         return false;
2242
2243     char buf[4096];
2244
2245     size_t nRead;
2246     do
2247     {
2248         nRead = file.Read(buf, WXSIZEOF(buf));
2249         if ( file.Error() )
2250             return false;
2251
2252         stream.Write(buf, nRead);
2253         if ( !stream )
2254             return false;
2255     }
2256     while ( !file.Eof() );
2257
2258     return true;
2259 }
2260
2261 bool wxTransferStreamToFile(wxInputStream& stream, const wxString& filename)
2262 {
2263     wxFFile file(filename, _T("wb"));
2264     if ( !file.IsOpened() )
2265         return false;
2266
2267     char buf[4096];
2268     for ( ;; )
2269     {
2270         stream.Read(buf, WXSIZEOF(buf));
2271
2272         const size_t nRead = stream.LastRead();
2273         if ( !nRead )
2274         {
2275             if ( stream.Eof() )
2276                 break;
2277
2278             return false;
2279         }
2280
2281         if ( !file.Write(buf, nRead) )
2282             return false;
2283     }
2284
2285     return true;
2286 }
2287
2288 #endif // wxUSE_STD_IOSTREAM/!wxUSE_STD_IOSTREAM
2289
2290 #endif // wxUSE_DOC_VIEW_ARCHITECTURE