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     wxString msgTitle;
 584     if (!wxTheApp->GetAppDisplayName().empty())
 585         msgTitle = wxTheApp->GetAppDisplayName();
 586     else
 587         msgTitle = wxString(_("File error"));
 588
 589 #if wxUSE_STD_IOSTREAM
 590     wxSTD ofstream store(file.mb_str(), wxSTD ios::binary);
 591     if (store.fail() || store.bad())
 592 #else
 593     wxFileOutputStream store(file);
 594     if (store.GetLastError() != wxSTREAM_NO_ERROR)
 595 #endif
 596     {
 597         (void)wxMessageBox(_("Sorry, could not open this file for saving."), msgTitle, wxOK | wxICON_EXCLAMATION,
 598                            GetDocumentWindow());
 599         // Saving error
 600         return false;
 601     }
 602     if (!SaveObject(store))
 603     {
 604         (void)wxMessageBox(_("Sorry, could not save this file."), msgTitle, wxOK | wxICON_EXCLAMATION,
 605                            GetDocumentWindow());
 606         // Saving error
 607         return false;
 608     }
 609
 610     return true;
 611 }
 612
 613 bool wxDocument::DoOpenDocument(const wxString& file)
 614 {
 615 #if wxUSE_STD_IOSTREAM
 616     wxSTD ifstream store(file.mb_str(), wxSTD ios::binary);
 617     if (!store.fail() && !store.bad())
 618 #else
 619     wxFileInputStream store(file);
 620     if (store.GetLastError() == wxSTREAM_NO_ERROR)
 621 #endif
 622     {
 623 #if wxUSE_STD_IOSTREAM
 624         LoadObject(store);
 625         if ( !!store || store.eof() )
 626 #else
 627         int res = LoadObject(store).GetLastError();
 628         if ( res == wxSTREAM_NO_ERROR || res == wxSTREAM_EOF )
 629 #endif
 630             return true;
 631     }
 632
 633     wxLogError(_("Sorry, could not open this file."));
 634     return false;
 635 }
 636
 637
 638 // ----------------------------------------------------------------------------
 639 // Document view
 640 // ----------------------------------------------------------------------------
 641
 642 wxView::wxView()
 643 {
 644     m_viewDocument = NULL;
 645
 646     m_viewFrame = NULL;
 647 }
 648
 649 wxView::~wxView()
 650 {
 651     GetDocumentManager()->ActivateView(this, false);
 652     m_viewDocument->RemoveView(this);
 653 }
 654
 655 bool wxView::TryValidator(wxEvent& event)
 656 {
 657     wxDocument * const doc = GetDocument();
 658     return doc && doc->ProcessEventHere(event);
 659 }
 660
 661 void wxView::OnActivateView(bool WXUNUSED(activate), wxView *WXUNUSED(activeView), wxView *WXUNUSED(deactiveView))
 662 {
 663 }
 664
 665 void wxView::OnPrint(wxDC *dc, wxObject *WXUNUSED(info))
 666 {
 667     OnDraw(dc);
 668 }
 669
 670 void wxView::OnUpdate(wxView *WXUNUSED(sender), wxObject *WXUNUSED(hint))
 671 {
 672 }
 673
 674 void wxView::OnChangeFilename()
 675 {
 676     // GetFrame can return wxWindow rather than wxTopLevelWindow due to
 677     // generic MDI implementation so use SetLabel rather than SetTitle.
 678     // It should cause SetTitle() for top level windows.
 679     wxWindow *win = GetFrame();
 680     if (!win) return;
 681
 682     wxDocument *doc = GetDocument();
 683     if (!doc) return;
 684
 685     win->SetLabel(doc->GetUserReadableName());
 686 }
 687
 688 void wxView::SetDocument(wxDocument *doc)
 689 {
 690     m_viewDocument = doc;
 691     if (doc)
 692         doc->AddView(this);
 693 }
 694
 695 bool wxView::Close(bool deleteWindow)
 696 {
 697     return OnClose(deleteWindow);
 698 }
 699
 700 void wxView::Activate(bool activate)
 701 {
 702     if (GetDocument() && GetDocumentManager())
 703     {
 704         OnActivateView(activate, this, GetDocumentManager()->GetCurrentView());
 705         GetDocumentManager()->ActivateView(this, activate);
 706     }
 707 }
 708
 709 bool wxView::OnClose(bool WXUNUSED(deleteWindow))
 710 {
 711     return GetDocument() ? GetDocument()->Close() : true;
 712 }
 713
 714 #if wxUSE_PRINTING_ARCHITECTURE
 715 wxPrintout *wxView::OnCreatePrintout()
 716 {
 717     return new wxDocPrintout(this);
 718 }
 719 #endif // wxUSE_PRINTING_ARCHITECTURE
 720
 721 // ----------------------------------------------------------------------------
 722 // wxDocTemplate
 723 // ----------------------------------------------------------------------------
 724
 725 wxDocTemplate::wxDocTemplate(wxDocManager *manager,
 726                              const wxString& descr,
 727                              const wxString& filter,
 728                              const wxString& dir,
 729                              const wxString& ext,
 730                              const wxString& docTypeName,
 731                              const wxString& viewTypeName,
 732                              wxClassInfo *docClassInfo,
 733                              wxClassInfo *viewClassInfo,
 734                              long flags)
 735 {
 736     m_documentManager = manager;
 737     m_description = descr;
 738     m_directory = dir;
 739     m_defaultExt = ext;
 740     m_fileFilter = filter;
 741     m_flags = flags;
 742     m_docTypeName = docTypeName;
 743     m_viewTypeName = viewTypeName;
 744     m_documentManager->AssociateTemplate(this);
 745
 746     m_docClassInfo = docClassInfo;
 747     m_viewClassInfo = viewClassInfo;
 748 }
 749
 750 wxDocTemplate::~wxDocTemplate()
 751 {
 752     m_documentManager->DisassociateTemplate(this);
 753 }
 754
 755 // Tries to dynamically construct an object of the right class.
 756 wxDocument *wxDocTemplate::CreateDocument(const wxString& path, long flags)
 757 {
 758     wxDocument * const doc = DoCreateDocument();
 759
 760     // VZ: this code doesn't delete doc if InitDocument() (i.e. doc->OnCreate())
 761     //     fails, is this intentional?
 762
 763     return doc && InitDocument(doc, path, flags) ? doc : NULL;
 764 }
 765
 766 bool
 767 wxDocTemplate::InitDocument(wxDocument* doc, const wxString& path, long flags)
 768 {
 769     doc->SetFilename(path);
 770     doc->SetDocumentTemplate(this);
 771     GetDocumentManager()->AddDocument(doc);
 772     doc->SetCommandProcessor(doc->OnCreateCommandProcessor());
 773
 774     if (doc->OnCreate(path, flags))
 775         return true;
 776     else
 777     {
 778         if (GetDocumentManager()->GetDocuments().Member(doc))
 779             doc->DeleteAllViews();
 780         return false;
 781     }
 782 }
 783
 784 wxView *wxDocTemplate::CreateView(wxDocument *doc, long flags)
 785 {
 786     wxView *view = DoCreateView();
 787     if ( view == NULL )
 788         return NULL;
 789
 790     view->SetDocument(doc);
 791     if (view->OnCreate(doc, flags))
 792     {
 793         return view;
 794     }
 795     else
 796     {
 797         delete view;
 798         return NULL;
 799     }
 800 }
 801
 802 // The default (very primitive) format detection: check is the extension is
 803 // that of the template
 804 bool wxDocTemplate::FileMatchesTemplate(const wxString& path)
 805 {
 806     wxStringTokenizer parser (GetFileFilter(), wxT(";"));
 807     wxString anything = wxT ("*");
 808     while (parser.HasMoreTokens())
 809     {
 810         wxString filter = parser.GetNextToken();
 811         wxString filterExt = FindExtension (filter);
 812         if ( filter.IsSameAs (anything)    ||
 813              filterExt.IsSameAs (anything) ||
 814              filterExt.IsSameAs (FindExtension (path)) )
 815             return true;
 816     }
 817     return GetDefaultExtension().IsSameAs(FindExtension(path));
 818 }
 819
 820 wxDocument *wxDocTemplate::DoCreateDocument()
 821 {
 822     if (!m_docClassInfo)
 823         return NULL;
 824
 825     return (wxDocument *)m_docClassInfo->CreateObject();
 826 }
 827
 828 wxView *wxDocTemplate::DoCreateView()
 829 {
 830     if (!m_viewClassInfo)
 831         return NULL;
 832
 833     return (wxView *)m_viewClassInfo->CreateObject();
 834 }
 835
 836 // ----------------------------------------------------------------------------
 837 // wxDocManager
 838 // ----------------------------------------------------------------------------
 839
 840 BEGIN_EVENT_TABLE(wxDocManager, wxEvtHandler)
 841     EVT_MENU(wxID_OPEN, wxDocManager::OnFileOpen)
 842     EVT_MENU(wxID_CLOSE, wxDocManager::OnFileClose)
 843     EVT_MENU(wxID_CLOSE_ALL, wxDocManager::OnFileCloseAll)
 844     EVT_MENU(wxID_REVERT, wxDocManager::OnFileRevert)
 845     EVT_MENU(wxID_NEW, wxDocManager::OnFileNew)
 846     EVT_MENU(wxID_SAVE, wxDocManager::OnFileSave)
 847     EVT_MENU(wxID_SAVEAS, wxDocManager::OnFileSaveAs)
 848     EVT_MENU(wxID_UNDO, wxDocManager::OnUndo)
 849     EVT_MENU(wxID_REDO, wxDocManager::OnRedo)
 850
 851     EVT_UPDATE_UI(wxID_OPEN, wxDocManager::OnUpdateFileOpen)
 852     EVT_UPDATE_UI(wxID_CLOSE, wxDocManager::OnUpdateDisableIfNoDoc)
 853     EVT_UPDATE_UI(wxID_CLOSE_ALL, wxDocManager::OnUpdateDisableIfNoDoc)
 854     EVT_UPDATE_UI(wxID_REVERT, wxDocManager::OnUpdateDisableIfNoDoc)
 855     EVT_UPDATE_UI(wxID_NEW, wxDocManager::OnUpdateFileNew)
 856     EVT_UPDATE_UI(wxID_SAVE, wxDocManager::OnUpdateFileSave)
 857     EVT_UPDATE_UI(wxID_SAVEAS, wxDocManager::OnUpdateDisableIfNoDoc)
 858     EVT_UPDATE_UI(wxID_UNDO, wxDocManager::OnUpdateUndo)
 859     EVT_UPDATE_UI(wxID_REDO, wxDocManager::OnUpdateRedo)
 860
 861 #if wxUSE_PRINTING_ARCHITECTURE
 862     EVT_MENU(wxID_PRINT, wxDocManager::OnPrint)
 863     EVT_MENU(wxID_PREVIEW, wxDocManager::OnPreview)
 864
 865     EVT_UPDATE_UI(wxID_PRINT, wxDocManager::OnUpdateDisableIfNoDoc)
 866     EVT_UPDATE_UI(wxID_PREVIEW, wxDocManager::OnUpdateDisableIfNoDoc)
 867 #endif
 868 END_EVENT_TABLE()
 869
 870 wxDocManager* wxDocManager::sm_docManager = NULL;
 871
 872 wxDocManager::wxDocManager(long WXUNUSED(flags), bool initialize)
 873 {
 874     wxASSERT_MSG( !sm_docManager, "multiple wxDocManagers not allowed" );
 875
 876     sm_docManager = this;
 877
 878     m_defaultDocumentNameCounter = 1;
 879     m_currentView = NULL;
 880     m_maxDocsOpen = INT_MAX;
 881     m_fileHistory = NULL;
 882     if ( initialize )
 883         Initialize();
 884 }
 885
 886 wxDocManager::~wxDocManager()
 887 {
 888     Clear();
 889     delete m_fileHistory;
 890     sm_docManager = NULL;
 891 }
 892
 893 // closes the specified document
 894 bool wxDocManager::CloseDocument(wxDocument* doc, bool force)
 895 {
 896     if (doc->Close() || force)
 897     {
 898         // Implicitly deletes the document when
 899         // the last view is deleted
 900         doc->DeleteAllViews();
 901
 902         // Check we're really deleted
 903         if (m_docs.Member(doc))
 904             delete doc;
 905
 906         return true;
 907     }
 908     return false;
 909 }
 910
 911 bool wxDocManager::CloseDocuments(bool force)
 912 {
 913     wxList::compatibility_iterator node = m_docs.GetFirst();
 914     while (node)
 915     {
 916         wxDocument *doc = (wxDocument *)node->GetData();
 917         wxList::compatibility_iterator next = node->GetNext();
 918
 919         if (!CloseDocument(doc, force))
 920             return false;
 921
 922         // This assumes that documents are not connected in
 923         // any way, i.e. deleting one document does NOT
 924         // delete another.
 925         node = next;
 926     }
 927     return true;
 928 }
 929
 930 bool wxDocManager::Clear(bool force)
 931 {
 932     if (!CloseDocuments(force))
 933         return false;
 934
 935     m_currentView = NULL;
 936
 937     wxList::compatibility_iterator node = m_templates.GetFirst();
 938     while (node)
 939     {
 940         wxDocTemplate *templ = (wxDocTemplate*) node->GetData();
 941         wxList::compatibility_iterator next = node->GetNext();
 942         delete templ;
 943         node = next;
 944     }
 945     return true;
 946 }
 947
 948 bool wxDocManager::Initialize()
 949 {
 950     m_fileHistory = OnCreateFileHistory();
 951     return true;
 952 }
 953
 954 wxFileHistory *wxDocManager::OnCreateFileHistory()
 955 {
 956     return new wxFileHistory;
 957 }
 958
 959 void wxDocManager::OnFileClose(wxCommandEvent& WXUNUSED(event))
 960 {
 961     wxDocument *doc = GetCurrentDocument();
 962     if (!doc)
 963         return;
 964     if (doc->Close())
 965     {
 966         doc->DeleteAllViews();
 967         if (m_docs.Member(doc))
 968             delete doc;
 969     }
 970 }
 971
 972 void wxDocManager::OnFileCloseAll(wxCommandEvent& WXUNUSED(event))
 973 {
 974     CloseDocuments(false);
 975 }
 976
 977 void wxDocManager::OnFileNew(wxCommandEvent& WXUNUSED(event))
 978 {
 979     CreateDocument( wxEmptyString, wxDOC_NEW );
 980 }
 981
 982 void wxDocManager::OnFileOpen(wxCommandEvent& WXUNUSED(event))
 983 {
 984     if ( !CreateDocument( wxEmptyString, 0) )
 985     {
 986         OnOpenFileFailure();
 987     }
 988 }
 989
 990 void wxDocManager::OnFileRevert(wxCommandEvent& WXUNUSED(event))
 991 {
 992     wxDocument *doc = GetCurrentDocument();
 993     if (!doc)
 994         return;
 995     doc->Revert();
 996 }
 997
 998 void wxDocManager::OnFileSave(wxCommandEvent& WXUNUSED(event))
 999 {
1000     wxDocument *doc = GetCurrentDocument();
1001     if (!doc)
1002         return;
1003     doc->Save();
1004 }
1005
1006 void wxDocManager::OnFileSaveAs(wxCommandEvent& WXUNUSED(event))
1007 {
1008     wxDocument *doc = GetCurrentDocument();
1009     if (!doc)
1010         return;
1011     doc->SaveAs();
1012 }
1013
1014 void wxDocManager::OnPrint(wxCommandEvent& WXUNUSED(event))
1015 {
1016 #if wxUSE_PRINTING_ARCHITECTURE
1017     wxView *view = GetCurrentView();
1018     if (!view)
1019         return;
1020
1021     wxPrintout *printout = view->OnCreatePrintout();
1022     if (printout)
1023     {
1024         wxPrinter printer;
1025         printer.Print(view->GetFrame(), printout, true);
1026
1027         delete printout;
1028     }
1029 #endif // wxUSE_PRINTING_ARCHITECTURE
1030 }
1031
1032 void wxDocManager::OnPreview(wxCommandEvent& WXUNUSED(event))
1033 {
1034 #if wxUSE_PRINTING_ARCHITECTURE
1035     wxView *view = GetCurrentView();
1036     if (!view)
1037         return;
1038
1039     wxPrintout *printout = view->OnCreatePrintout();
1040     if (printout)
1041     {
1042         // Pass two printout objects: for preview, and possible printing.
1043         wxPrintPreviewBase *preview = new wxPrintPreview(printout, view->OnCreatePrintout());
1044         if ( !preview->Ok() )
1045         {
1046             delete preview;
1047             wxMessageBox( _("Sorry, print preview needs a printer to be installed.") );
1048             return;
1049         }
1050
1051         wxPreviewFrame *frame = new wxPreviewFrame(preview, (wxFrame *)wxTheApp->GetTopWindow(), _("Print Preview"),
1052                 wxPoint(100, 100), wxSize(600, 650));
1053         frame->Centre(wxBOTH);
1054         frame->Initialize();
1055         frame->Show(true);
1056     }
1057 #endif // wxUSE_PRINTING_ARCHITECTURE
1058 }
1059
1060 void wxDocManager::OnUndo(wxCommandEvent& event)
1061 {
1062     wxDocument *doc = GetCurrentDocument();
1063     if (!doc)
1064         return;
1065     if (doc->GetCommandProcessor())
1066         doc->GetCommandProcessor()->Undo();
1067     else
1068         event.Skip();
1069 }
1070
1071 void wxDocManager::OnRedo(wxCommandEvent& event)
1072 {
1073     wxDocument *doc = GetCurrentDocument();
1074     if (!doc)
1075         return;
1076     if (doc->GetCommandProcessor())
1077         doc->GetCommandProcessor()->Redo();
1078     else
1079         event.Skip();
1080 }
1081
1082 // Handlers for UI update commands
1083
1084 void wxDocManager::OnUpdateFileOpen(wxUpdateUIEvent& event)
1085 {
1086     event.Enable( true );
1087 }
1088
1089 void wxDocManager::OnUpdateDisableIfNoDoc(wxUpdateUIEvent& event)
1090 {
1091     event.Enable( GetCurrentDocument() != NULL );
1092 }
1093
1094 void wxDocManager::OnUpdateFileNew(wxUpdateUIEvent& event)
1095 {
1096     event.Enable( true );
1097 }
1098
1099 void wxDocManager::OnUpdateFileSave(wxUpdateUIEvent& event)
1100 {
1101     wxDocument *doc = GetCurrentDocument();
1102     event.Enable( doc && doc->IsModified() );
1103 }
1104
1105 void wxDocManager::OnUpdateUndo(wxUpdateUIEvent& event)
1106 {
1107     wxDocument *doc = GetCurrentDocument();
1108     if (!doc)
1109         event.Enable(false);
1110     else if (!doc->GetCommandProcessor())
1111         event.Skip();
1112     else
1113     {
1114         event.Enable( doc->GetCommandProcessor()->CanUndo() );
1115         doc->GetCommandProcessor()->SetMenuStrings();
1116     }
1117 }
1118
1119 void wxDocManager::OnUpdateRedo(wxUpdateUIEvent& event)
1120 {
1121     wxDocument *doc = GetCurrentDocument();
1122     if (!doc)
1123         event.Enable(false);
1124     else if (!doc->GetCommandProcessor())
1125         event.Skip();
1126     else
1127     {
1128         event.Enable( doc->GetCommandProcessor()->CanRedo() );
1129         doc->GetCommandProcessor()->SetMenuStrings();
1130     }
1131 }
1132
1133 wxView *wxDocManager::GetCurrentView() const
1134 {
1135     if (m_currentView)
1136         return m_currentView;
1137     if (m_docs.GetCount() == 1)
1138     {
1139         wxDocument* doc = (wxDocument*) m_docs.GetFirst()->GetData();
1140         return doc->GetFirstView();
1141     }
1142     return NULL;
1143 }
1144
1145 bool wxDocManager::TryValidator(wxEvent& event)
1146 {
1147     wxView * const view = GetCurrentView();
1148     return view && view->ProcessEventHere(event);
1149 }
1150
1151 namespace
1152 {
1153
1154 // helper function: return only the visible templates
1155 wxDocTemplates GetVisibleTemplates(const wxList& allTemplates)
1156 {
1157     // select only the visible templates
1158     const size_t totalNumTemplates = allTemplates.GetCount();
1159     wxDocTemplates templates;
1160     if ( totalNumTemplates )
1161     {
1162         templates.reserve(totalNumTemplates);
1163
1164         for ( wxList::const_iterator i = allTemplates.begin(),
1165                                    end = allTemplates.end();
1166               i != end;
1167               ++i )
1168         {
1169             wxDocTemplate * const temp = (wxDocTemplate *)*i;
1170             if ( temp->IsVisible() )
1171                 templates.push_back(temp);
1172         }
1173     }
1174
1175     return templates;
1176 }
1177
1178 } // anonymous namespace
1179
1180 wxDocument *wxDocManager::CreateDocument(const wxString& pathOrig, long flags)
1181 {
1182     // this ought to be const but SelectDocumentType/Path() are not
1183     // const-correct and can't be changed as, being virtual, this risks
1184     // breaking user code overriding them
1185     wxDocTemplates templates(GetVisibleTemplates(m_templates));
1186     const size_t numTemplates = templates.size();
1187     if ( !numTemplates )
1188     {
1189         // no templates can be used, can't create document
1190         return NULL;
1191     }
1192
1193
1194     // normally user should select the template to use but wxDOC_SILENT flag we
1195     // choose one ourselves
1196     wxString path = pathOrig;   // may be modified below
1197     wxDocTemplate *temp;
1198     if ( flags & wxDOC_SILENT )
1199     {
1200         wxASSERT_MSG( !path.empty(),
1201                       "using empty path with wxDOC_SILENT doesn't make sense" );
1202
1203         temp = FindTemplateForPath(path);
1204         if ( !temp )
1205         {
1206             wxLogWarning(_("The format of file '%s' couldn't be determined."),
1207                          path);
1208         }
1209     }
1210     else // not silent, ask the user
1211     {
1212         // for the new file we need just the template, for an existing one we
1213         // need the template and the path, unless it's already specified
1214         if ( (flags & wxDOC_NEW) || !path.empty() )
1215             temp = SelectDocumentType(&templates[0], numTemplates);
1216         else
1217             temp = SelectDocumentPath(&templates[0], numTemplates, path, flags);
1218     }
1219
1220     if ( !temp )
1221         return NULL;
1222
1223     // check whether the document with this path is already opened
1224     if ( !path.empty() )
1225     {
1226         const wxFileName fn(path);
1227         for ( wxList::const_iterator i = m_docs.begin(); i != m_docs.end(); ++i )
1228         {
1229             wxDocument * const doc = (wxDocument*)*i;
1230
1231             if ( fn == doc->GetFilename() )
1232             {
1233                 // file already open, just activate it and return
1234                 if ( doc->GetFirstView() )
1235                 {
1236                     ActivateView(doc->GetFirstView());
1237                     if ( doc->GetDocumentWindow() )
1238                         doc->GetDocumentWindow()->SetFocus();
1239                     return doc;
1240                 }
1241             }
1242         }
1243     }
1244
1245
1246     // no, we need to create a new document
1247
1248
1249     // if we've reached the max number of docs, close the first one.
1250     if ( (int)GetDocuments().GetCount() >= m_maxDocsOpen )
1251     {
1252         if ( !CloseDocument((wxDocument *)GetDocuments().GetFirst()->GetData()) )
1253         {
1254             // can't open the new document if closing the old one failed
1255             return NULL;
1256         }
1257     }
1258
1259
1260     // do create and initialize the new document finally
1261     wxDocument * const docNew = temp->CreateDocument(path, flags);
1262     if ( !docNew )
1263         return NULL;
1264
1265     docNew->SetDocumentName(temp->GetDocumentName());
1266     docNew->SetDocumentTemplate(temp);
1267
1268     // call the appropriate function depending on whether we're creating a new
1269     // file or opening an existing one
1270     if ( !(flags & wxDOC_NEW ? docNew->OnNewDocument()
1271                              : docNew->OnOpenDocument(path)) )
1272     {
1273          // Document is implicitly deleted by DeleteAllViews
1274          docNew->DeleteAllViews();
1275          return NULL;
1276     }
1277
1278     // add the successfully opened file to MRU, but only if we're going to be
1279     // able to reopen it successfully later which requires the template for
1280     // this document to be retrievable from the file extension
1281     if ( !(flags & wxDOC_NEW) && temp->FileMatchesTemplate(path) )
1282         AddFileToHistory(path);
1283
1284     return docNew;
1285 }
1286
1287 wxView *wxDocManager::CreateView(wxDocument *doc, long flags)
1288 {
1289     wxDocTemplates templates(GetVisibleTemplates(m_templates));
1290     const size_t numTemplates = templates.size();
1291
1292     if ( numTemplates == 0 )
1293         return NULL;
1294
1295     wxDocTemplate * const
1296     temp = numTemplates == 1 ? templates[0]
1297                              : SelectViewType(&templates[0], numTemplates);
1298
1299     if ( !temp )
1300         return NULL;
1301
1302     wxView *view = temp->CreateView(doc, flags);
1303     if ( view )
1304         view->SetViewName(temp->GetViewName());
1305     return view;
1306 }
1307
1308 // Not yet implemented
1309 void
1310 wxDocManager::DeleteTemplate(wxDocTemplate *WXUNUSED(temp), long WXUNUSED(flags))
1311 {
1312 }
1313
1314 // Not yet implemented
1315 bool wxDocManager::FlushDoc(wxDocument *WXUNUSED(doc))
1316 {
1317     return false;
1318 }
1319
1320 wxDocument *wxDocManager::GetCurrentDocument() const
1321 {
1322     wxView *view = GetCurrentView();
1323     if (view)
1324         return view->GetDocument();
1325     else
1326         return NULL;
1327 }
1328
1329 // Make a default name for a new document
1330 #if WXWIN_COMPATIBILITY_2_8
1331 bool wxDocManager::MakeDefaultName(wxString& WXUNUSED(name))
1332 {
1333     // we consider that this function can only be overridden by the user code,
1334     // not called by it as it only makes sense to call it internally, so we
1335     // don't bother to return anything from here
1336     return false;
1337 }
1338 #endif // WXWIN_COMPATIBILITY_2_8
1339
1340 wxString wxDocManager::MakeNewDocumentName()
1341 {
1342     wxString name;
1343
1344 #if WXWIN_COMPATIBILITY_2_8
1345     if ( !MakeDefaultName(name) )
1346 #endif // WXWIN_COMPATIBILITY_2_8
1347     {
1348         name.Printf(_("unnamed%d"), m_defaultDocumentNameCounter);
1349         m_defaultDocumentNameCounter++;
1350     }
1351
1352     return name;
1353 }
1354
1355 // Make a frame title (override this to do something different)
1356 // If docName is empty, a document is not currently active.
1357 wxString wxDocManager::MakeFrameTitle(wxDocument* doc)
1358 {
1359     wxString appName = wxTheApp->GetAppDisplayName();
1360     wxString title;
1361     if (!doc)
1362         title = appName;
1363     else
1364     {
1365         wxString docName = doc->GetUserReadableName();
1366         title = docName + wxString(_(" - ")) + appName;
1367     }
1368     return title;
1369 }
1370
1371
1372 // Not yet implemented
1373 wxDocTemplate *wxDocManager::MatchTemplate(const wxString& WXUNUSED(path))
1374 {
1375     return NULL;
1376 }
1377
1378 // File history management
1379 void wxDocManager::AddFileToHistory(const wxString& file)
1380 {
1381     if (m_fileHistory)
1382         m_fileHistory->AddFileToHistory(file);
1383 }
1384
1385 void wxDocManager::RemoveFileFromHistory(size_t i)
1386 {
1387     if (m_fileHistory)
1388         m_fileHistory->RemoveFileFromHistory(i);
1389 }
1390
1391 wxString wxDocManager::GetHistoryFile(size_t i) const
1392 {
1393     wxString histFile;
1394
1395     if (m_fileHistory)
1396         histFile = m_fileHistory->GetHistoryFile(i);
1397
1398     return histFile;
1399 }
1400
1401 void wxDocManager::FileHistoryUseMenu(wxMenu *menu)
1402 {
1403     if (m_fileHistory)
1404         m_fileHistory->UseMenu(menu);
1405 }
1406
1407 void wxDocManager::FileHistoryRemoveMenu(wxMenu *menu)
1408 {
1409     if (m_fileHistory)
1410         m_fileHistory->RemoveMenu(menu);
1411 }
1412
1413 #if wxUSE_CONFIG
1414 void wxDocManager::FileHistoryLoad(const wxConfigBase& config)
1415 {
1416     if (m_fileHistory)
1417         m_fileHistory->Load(config);
1418 }
1419
1420 void wxDocManager::FileHistorySave(wxConfigBase& config)
1421 {
1422     if (m_fileHistory)
1423         m_fileHistory->Save(config);
1424 }
1425 #endif
1426
1427 void wxDocManager::FileHistoryAddFilesToMenu(wxMenu* menu)
1428 {
1429     if (m_fileHistory)
1430         m_fileHistory->AddFilesToMenu(menu);
1431 }
1432
1433 void wxDocManager::FileHistoryAddFilesToMenu()
1434 {
1435     if (m_fileHistory)
1436         m_fileHistory->AddFilesToMenu();
1437 }
1438
1439 size_t wxDocManager::GetHistoryFilesCount() const
1440 {
1441     return m_fileHistory ? m_fileHistory->GetCount() : 0;
1442 }
1443
1444
1445 // Find out the document template via matching in the document file format
1446 // against that of the template
1447 wxDocTemplate *wxDocManager::FindTemplateForPath(const wxString& path)
1448 {
1449     wxDocTemplate *theTemplate = NULL;
1450
1451     // Find the template which this extension corresponds to
1452     for (size_t i = 0; i < m_templates.GetCount(); i++)
1453     {
1454         wxDocTemplate *temp = (wxDocTemplate *)m_templates.Item(i)->GetData();
1455         if ( temp->FileMatchesTemplate(path) )
1456         {
1457             theTemplate = temp;
1458             break;
1459         }
1460     }
1461     return theTemplate;
1462 }
1463
1464 // Prompts user to open a file, using file specs in templates.
1465 // Must extend the file selector dialog or implement own; OR
1466 // match the extension to the template extension.
1467
1468 wxDocTemplate *wxDocManager::SelectDocumentPath(wxDocTemplate **templates,
1469                                                 int noTemplates,
1470                                                 wxString& path,
1471                                                 long WXUNUSED(flags),
1472                                                 bool WXUNUSED(save))
1473 {
1474     // We can only have multiple filters in Windows and GTK
1475 #if defined(__WXMSW__) || defined(__WXGTK__) || defined(__WXMAC__)
1476     wxString descrBuf;
1477
1478     int i;
1479     for (i = 0; i < noTemplates; i++)
1480     {
1481         if (templates[i]->IsVisible())
1482         {
1483             // add a '|' to separate this filter from the previous one
1484             if ( !descrBuf.empty() )
1485                 descrBuf << wxT('|');
1486
1487             descrBuf << templates[i]->GetDescription()
1488                 << wxT(" (") << templates[i]->GetFileFilter() << wxT(") |")
1489                 << templates[i]->GetFileFilter();
1490         }
1491     }
1492 #else
1493     wxString descrBuf = wxT("*.*");
1494     wxUnusedVar(noTemplates);
1495 #endif
1496
1497     int FilterIndex = -1;
1498
1499     wxWindow* parent = wxFindSuitableParent();
1500
1501     wxString pathTmp = wxFileSelectorEx(_("Open File"),
1502                                         m_lastDirectory,
1503                                         wxEmptyString,
1504                                         &FilterIndex,
1505                                         descrBuf,
1506                                         0,
1507                                         parent);
1508
1509     wxDocTemplate *theTemplate = NULL;
1510     if (!pathTmp.empty())
1511     {
1512         if (!wxFileExists(pathTmp))
1513         {
1514             wxString msgTitle;
1515             if (!wxTheApp->GetAppDisplayName().empty())
1516                 msgTitle = wxTheApp->GetAppDisplayName();
1517             else
1518                 msgTitle = wxString(_("File error"));
1519
1520             (void)wxMessageBox(_("Sorry, could not open this file."), msgTitle, wxOK | wxICON_EXCLAMATION,
1521                 parent);
1522
1523             path = wxEmptyString;
1524             return NULL;
1525         }
1526         m_lastDirectory = wxPathOnly(pathTmp);
1527
1528         path = pathTmp;
1529
1530         // first choose the template using the extension, if this fails (i.e.
1531         // wxFileSelectorEx() didn't fill it), then use the path
1532         if ( FilterIndex != -1 )
1533             theTemplate = templates[FilterIndex];
1534         if ( !theTemplate )
1535             theTemplate = FindTemplateForPath(path);
1536         if ( !theTemplate )
1537         {
1538             // Since we do not add files with non-default extensions to the FileHistory this
1539             // can only happen if the application changes the allowed templates in runtime.
1540             (void)wxMessageBox(_("Sorry, the format for this file is unknown."),
1541                                 _("Open File"),
1542                                 wxOK | wxICON_EXCLAMATION, wxFindSuitableParent());
1543         }
1544     }
1545     else
1546     {
1547         path = wxEmptyString;
1548     }
1549
1550     return theTemplate;
1551 }
1552
1553 wxDocTemplate *wxDocManager::SelectDocumentType(wxDocTemplate **templates,
1554                                                 int noTemplates, bool sort)
1555 {
1556     wxArrayString strings;
1557     wxDocTemplate **data = new wxDocTemplate *[noTemplates];
1558     int i;
1559     int n = 0;
1560
1561     for (i = 0; i < noTemplates; i++)
1562     {
1563         if (templates[i]->IsVisible())
1564         {
1565             int j;
1566             bool want = true;
1567             for (j = 0; j < n; j++)
1568             {
1569                 //filter out NOT unique documents + view combinations
1570                 if ( templates[i]->m_docTypeName == data[j]->m_docTypeName &&
1571                      templates[i]->m_viewTypeName == data[j]->m_viewTypeName
1572                    )
1573                     want = false;
1574             }
1575
1576             if ( want )
1577             {
1578                 strings.Add(templates[i]->m_description);
1579
1580                 data[n] = templates[i];
1581                 n ++;
1582             }
1583         }
1584     }  // for
1585
1586     if (sort)
1587     {
1588         strings.Sort(); // ascending sort
1589         // Yes, this will be slow, but template lists
1590         // are typically short.
1591         int j;
1592         n = strings.Count();
1593         for (i = 0; i < n; i++)
1594         {
1595             for (j = 0; j < noTemplates; j++)
1596             {
1597                 if (strings[i] == templates[j]->m_description)
1598                     data[i] = templates[j];
1599             }
1600         }
1601     }
1602
1603     wxDocTemplate *theTemplate;
1604
1605     switch ( n )
1606     {
1607         case 0:
1608             // no visible templates, hence nothing to choose from
1609             theTemplate = NULL;
1610             break;
1611
1612         case 1:
1613             // don't propose the user to choose if he has no choice
1614             theTemplate = data[0];
1615             break;
1616
1617         default:
1618             // propose the user to choose one of several
1619             theTemplate = (wxDocTemplate *)wxGetSingleChoiceData
1620                           (
1621                             _("Select a document template"),
1622                             _("Templates"),
1623                             strings,
1624                             (void **)data,
1625                             wxFindSuitableParent()
1626                           );
1627     }
1628
1629     delete[] data;
1630
1631     return theTemplate;
1632 }
1633
1634 wxDocTemplate *wxDocManager::SelectViewType(wxDocTemplate **templates,
1635                                             int noTemplates, bool sort)
1636 {
1637     wxArrayString strings;
1638     wxDocTemplate **data = new wxDocTemplate *[noTemplates];
1639     int i;
1640     int n = 0;
1641
1642     for (i = 0; i < noTemplates; i++)
1643     {
1644         wxDocTemplate *templ = templates[i];
1645         if ( templ->IsVisible() && !templ->GetViewName().empty() )
1646         {
1647             int j;
1648             bool want = true;
1649             for (j = 0; j < n; j++)
1650             {
1651                 //filter out NOT unique views
1652                 if ( templates[i]->m_viewTypeName == data[j]->m_viewTypeName )
1653                     want = false;
1654             }
1655
1656             if ( want )
1657             {
1658                 strings.Add(templ->m_viewTypeName);
1659                 data[n] = templ;
1660                 n ++;
1661             }
1662         }
1663     }
1664
1665     if (sort)
1666     {
1667         strings.Sort(); // ascending sort
1668         // Yes, this will be slow, but template lists
1669         // are typically short.
1670         int j;
1671         n = strings.Count();
1672         for (i = 0; i < n; i++)
1673         {
1674             for (j = 0; j < noTemplates; j++)
1675             {
1676                 if (strings[i] == templates[j]->m_viewTypeName)
1677                     data[i] = templates[j];
1678             }
1679         }
1680     }
1681
1682     wxDocTemplate *theTemplate;
1683
1684     // the same logic as above
1685     switch ( n )
1686     {
1687         case 0:
1688             theTemplate = NULL;
1689             break;
1690
1691         case 1:
1692             theTemplate = data[0];
1693             break;
1694
1695         default:
1696             theTemplate = (wxDocTemplate *)wxGetSingleChoiceData
1697                           (
1698                             _("Select a document view"),
1699                             _("Views"),
1700                             strings,
1701                             (void **)data,
1702                             wxFindSuitableParent()
1703                           );
1704
1705     }
1706
1707     delete[] data;
1708     return theTemplate;
1709 }
1710
1711 void wxDocManager::AssociateTemplate(wxDocTemplate *temp)
1712 {
1713     if (!m_templates.Member(temp))
1714         m_templates.Append(temp);
1715 }
1716
1717 void wxDocManager::DisassociateTemplate(wxDocTemplate *temp)
1718 {
1719     m_templates.DeleteObject(temp);
1720 }
1721
1722 // Add and remove a document from the manager's list
1723 void wxDocManager::AddDocument(wxDocument *doc)
1724 {
1725     if (!m_docs.Member(doc))
1726         m_docs.Append(doc);
1727 }
1728
1729 void wxDocManager::RemoveDocument(wxDocument *doc)
1730 {
1731     m_docs.DeleteObject(doc);
1732 }
1733
1734 // Views or windows should inform the document manager
1735 // when a view is going in or out of focus
1736 void wxDocManager::ActivateView(wxView *view, bool activate)
1737 {
1738     if ( activate )
1739     {
1740         m_currentView = view;
1741     }
1742     else // deactivate
1743     {
1744         if ( m_currentView == view )
1745         {
1746             // don't keep stale pointer
1747             m_currentView = NULL;
1748         }
1749     }
1750 }
1751
1752 // ----------------------------------------------------------------------------
1753 // Default document child frame
1754 // ----------------------------------------------------------------------------
1755
1756 BEGIN_EVENT_TABLE(wxDocChildFrame, wxFrame)
1757     EVT_ACTIVATE(wxDocChildFrame::OnActivate)
1758     EVT_CLOSE(wxDocChildFrame::OnCloseWindow)
1759 END_EVENT_TABLE()
1760
1761 wxDocChildFrame::wxDocChildFrame(wxDocument *doc,
1762                                  wxView *view,
1763                                  wxFrame *frame,
1764                                  wxWindowID id,
1765                                  const wxString& title,
1766                                  const wxPoint& pos,
1767                                  const wxSize& size,
1768                                  long style,
1769                                  const wxString& name)
1770                : wxFrame(frame, id, title, pos, size, style, name)
1771 {
1772     m_childDocument = doc;
1773     m_childView = view;
1774     if (view)
1775         view->SetFrame(this);
1776 }
1777
1778 bool wxDocChildFrame::TryValidator(wxEvent& event)
1779 {
1780     if ( !m_childView )
1781         return false;
1782
1783     // FIXME: why is this needed here?
1784     m_childView->Activate(true);
1785
1786     return m_childView->ProcessEventHere(event);
1787 }
1788
1789 void wxDocChildFrame::OnActivate(wxActivateEvent& event)
1790 {
1791     wxFrame::OnActivate(event);
1792
1793     if (m_childView)
1794         m_childView->Activate(event.GetActive());
1795 }
1796
1797 void wxDocChildFrame::OnCloseWindow(wxCloseEvent& event)
1798 {
1799     if (m_childView)
1800     {
1801         bool ans = event.CanVeto()
1802                     ? m_childView->Close(false) // false means don't delete associated window
1803                     : true; // Must delete.
1804
1805         if (ans)
1806         {
1807             m_childView->Activate(false);
1808             delete m_childView;
1809             m_childView = NULL;
1810             m_childDocument = NULL;
1811
1812             this->Destroy();
1813         }
1814         else
1815             event.Veto();
1816     }
1817     else
1818         event.Veto();
1819 }
1820
1821 // ----------------------------------------------------------------------------
1822 // Default parent frame
1823 // ----------------------------------------------------------------------------
1824
1825 BEGIN_EVENT_TABLE(wxDocParentFrame, wxFrame)
1826     EVT_MENU(wxID_EXIT, wxDocParentFrame::OnExit)
1827     EVT_MENU_RANGE(wxID_FILE1, wxID_FILE9, wxDocParentFrame::OnMRUFile)
1828     EVT_CLOSE(wxDocParentFrame::OnCloseWindow)
1829 END_EVENT_TABLE()
1830
1831 wxDocParentFrame::wxDocParentFrame()
1832 {
1833     m_docManager = NULL;
1834 }
1835
1836 wxDocParentFrame::wxDocParentFrame(wxDocManager *manager,
1837                                    wxFrame *frame,
1838                                    wxWindowID id,
1839                                    const wxString& title,
1840                                    const wxPoint& pos,
1841                                    const wxSize& size,
1842                                    long style,
1843                                    const wxString& name)
1844                 : wxFrame(frame, id, title, pos, size, style, name)
1845 {
1846     m_docManager = manager;
1847 }
1848
1849 bool wxDocParentFrame::Create(wxDocManager *manager,
1850                               wxFrame *frame,
1851                               wxWindowID id,
1852                               const wxString& title,
1853                               const wxPoint& pos,
1854                               const wxSize& size,
1855                               long style,
1856                               const wxString& name)
1857 {
1858     m_docManager = manager;
1859     return base_type::Create(frame, id, title, pos, size, style, name);
1860 }
1861
1862 void wxDocParentFrame::OnExit(wxCommandEvent& WXUNUSED(event))
1863 {
1864     Close();
1865 }
1866
1867 void wxDocParentFrame::OnMRUFile(wxCommandEvent& event)
1868 {
1869     int n = event.GetId() - wxID_FILE1;  // the index in MRU list
1870     wxString filename(m_docManager->GetHistoryFile(n));
1871     if ( filename.empty() )
1872         return;
1873
1874     wxString errMsg; // must contain exactly one "%s" if non-empty
1875     if ( wxFile::Exists(filename) )
1876     {
1877         // try to open it
1878         if ( m_docManager->CreateDocument(filename, wxDOC_SILENT) )
1879             return;
1880
1881         errMsg = _("The file '%s' couldn't be opened.");
1882     }
1883     else // file doesn't exist
1884     {
1885         errMsg = _("The file '%s' doesn't exist and couldn't be opened.");
1886     }
1887
1888
1889     wxASSERT_MSG( !errMsg.empty(), "should have an error message" );
1890
1891     // remove the file which we can't open from the MRU list
1892     m_docManager->RemoveFileFromHistory(n);
1893
1894     // and tell the user about it
1895     wxLogError(errMsg + '\n' +
1896                _("It has been removed from the most recently used files list."),
1897                filename);
1898 }
1899
1900 // Extend event processing to search the view's event table
1901 bool wxDocParentFrame::TryValidator(wxEvent& event)
1902 {
1903     return m_docManager && m_docManager->ProcessEventHere(event);
1904 }
1905
1906 // Define the behaviour for the frame closing
1907 // - must delete all frames except for the main one.
1908 void wxDocParentFrame::OnCloseWindow(wxCloseEvent& event)
1909 {
1910     if (m_docManager->Clear(!event.CanVeto()))
1911     {
1912         this->Destroy();
1913     }
1914     else
1915         event.Veto();
1916 }
1917
1918 #if wxUSE_PRINTING_ARCHITECTURE
1919
1920 wxDocPrintout::wxDocPrintout(wxView *view, const wxString& title)
1921              : wxPrintout(title)
1922 {
1923     m_printoutView = view;
1924 }
1925
1926 bool wxDocPrintout::OnPrintPage(int WXUNUSED(page))
1927 {
1928     wxDC *dc = GetDC();
1929
1930     // Get the logical pixels per inch of screen and printer
1931     int ppiScreenX, ppiScreenY;
1932     GetPPIScreen(&ppiScreenX, &ppiScreenY);
1933     wxUnusedVar(ppiScreenY);
1934     int ppiPrinterX, ppiPrinterY;
1935     GetPPIPrinter(&ppiPrinterX, &ppiPrinterY);
1936     wxUnusedVar(ppiPrinterY);
1937
1938     // This scales the DC so that the printout roughly represents the
1939     // the screen scaling. The text point size _should_ be the right size
1940     // but in fact is too small for some reason. This is a detail that will
1941     // need to be addressed at some point but can be fudged for the
1942     // moment.
1943     float scale = (float)((float)ppiPrinterX/(float)ppiScreenX);
1944
1945     // Now we have to check in case our real page size is reduced
1946     // (e.g. because we're drawing to a print preview memory DC)
1947     int pageWidth, pageHeight;
1948     int w, h;
1949     dc->GetSize(&w, &h);
1950     GetPageSizePixels(&pageWidth, &pageHeight);
1951     wxUnusedVar(pageHeight);
1952
1953     // If printer pageWidth == current DC width, then this doesn't
1954     // change. But w might be the preview bitmap width, so scale down.
1955     float overallScale = scale * (float)(w/(float)pageWidth);
1956     dc->SetUserScale(overallScale, overallScale);
1957
1958     if (m_printoutView)
1959     {
1960         m_printoutView->OnDraw(dc);
1961     }
1962     return true;
1963 }
1964
1965 bool wxDocPrintout::HasPage(int pageNum)
1966 {
1967     return (pageNum == 1);
1968 }
1969
1970 bool wxDocPrintout::OnBeginDocument(int startPage, int endPage)
1971 {
1972     if (!wxPrintout::OnBeginDocument(startPage, endPage))
1973         return false;
1974
1975     return true;
1976 }
1977
1978 void wxDocPrintout::GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, int *selPageTo)
1979 {
1980     *minPage = 1;
1981     *maxPage = 1;
1982     *selPageFrom = 1;
1983     *selPageTo = 1;
1984 }
1985
1986 #endif // wxUSE_PRINTING_ARCHITECTURE
1987
1988 // ----------------------------------------------------------------------------
1989 // File history (a.k.a. MRU, most recently used, files list)
1990 // ----------------------------------------------------------------------------
1991
1992 wxFileHistory::wxFileHistory(size_t maxFiles, wxWindowID idBase)
1993 {
1994     m_fileMaxFiles = maxFiles;
1995     m_idBase = idBase;
1996 }
1997
1998 void wxFileHistory::AddFileToHistory(const wxString& file)
1999 {
2000     // check if we don't already have this file
2001     const wxFileName fnNew(file);
2002     size_t i,
2003            numFiles = m_fileHistory.size();
2004     for ( i = 0; i < numFiles; i++ )
2005     {
2006         if ( fnNew == m_fileHistory[i] )
2007         {
2008             // we do have it, move it to the top of the history
2009             RemoveFileFromHistory(i);
2010             numFiles--;
2011             break;
2012         }
2013     }
2014
2015     // if we already have a full history, delete the one at the end
2016     if ( numFiles == m_fileMaxFiles )
2017     {
2018         RemoveFileFromHistory(--numFiles);
2019     }
2020     else // add a new menu item to all file menus (will be updated below)
2021     {
2022         for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2023               node;
2024               node = node->GetNext() )
2025         {
2026             wxMenu * const menu = (wxMenu *)node->GetData();
2027
2028             if ( !numFiles && menu->GetMenuItemCount() )
2029                 menu->AppendSeparator();
2030
2031             // label doesn't matter, it will be set below anyhow, but it can't
2032             // be empty (this is supposed to indicate a stock item)
2033             menu->Append(m_idBase + numFiles, " ");
2034         }
2035     }
2036
2037
2038     // insert the new file in the beginning of the file history
2039     m_fileHistory.insert(m_fileHistory.begin(), file);
2040     numFiles++;
2041
2042     // update the labels in all menus
2043     for ( i = 0; i < numFiles; i++ )
2044     {
2045         // if in same directory just show the filename; otherwise the full path
2046         const wxFileName fnOld(m_fileHistory[i]);
2047
2048         wxString pathInMenu;
2049         if ( fnOld.GetPath() == fnNew.GetPath() )
2050         {
2051             pathInMenu = fnOld.GetFullName();
2052         }
2053         else // file in different directory
2054         {
2055             // absolute path; could also set relative path
2056             pathInMenu = m_fileHistory[i];
2057         }
2058
2059         for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2060               node;
2061               node = node->GetNext() )
2062         {
2063             wxMenu * const menu = (wxMenu *)node->GetData();
2064
2065             menu->SetLabel(m_idBase + i, GetMRUEntryLabel(i, pathInMenu));
2066         }
2067     }
2068 }
2069
2070 void wxFileHistory::RemoveFileFromHistory(size_t i)
2071 {
2072     size_t numFiles = m_fileHistory.size();
2073     wxCHECK_RET( i < numFiles,
2074                  wxT("invalid index in wxFileHistory::RemoveFileFromHistory") );
2075
2076     // delete the element from the array
2077     m_fileHistory.RemoveAt(i);
2078     numFiles--;
2079
2080     for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2081           node;
2082           node = node->GetNext() )
2083     {
2084         wxMenu * const menu = (wxMenu *) node->GetData();
2085
2086         // shift filenames up
2087         for ( size_t j = i; j < numFiles; j++ )
2088         {
2089             menu->SetLabel(m_idBase + j, GetMRUEntryLabel(j, m_fileHistory[j]));
2090         }
2091
2092         // delete the last menu item which is unused now
2093         const wxWindowID lastItemId = m_idBase + numFiles;
2094         if ( menu->FindItem(lastItemId) )
2095             menu->Delete(lastItemId);
2096
2097         // delete the last separator too if no more files are left
2098         if ( m_fileHistory.empty() )
2099         {
2100             const wxMenuItemList::compatibility_iterator
2101                 nodeLast = menu->GetMenuItems().GetLast();
2102             if ( nodeLast )
2103             {
2104                 wxMenuItem * const lastMenuItem = nodeLast->GetData();
2105                 if ( lastMenuItem->IsSeparator() )
2106                     menu->Delete(lastMenuItem);
2107             }
2108             //else: menu is empty somehow
2109         }
2110     }
2111 }
2112
2113 void wxFileHistory::UseMenu(wxMenu *menu)
2114 {
2115     if ( !m_fileMenus.Member(menu) )
2116         m_fileMenus.Append(menu);
2117 }
2118
2119 void wxFileHistory::RemoveMenu(wxMenu *menu)
2120 {
2121     m_fileMenus.DeleteObject(menu);
2122 }
2123
2124 #if wxUSE_CONFIG
2125 void wxFileHistory::Load(const wxConfigBase& config)
2126 {
2127     m_fileHistory.Clear();
2128
2129     wxString buf;
2130     buf.Printf(wxT("file%d"), 1);
2131
2132     wxString historyFile;
2133     while ((m_fileHistory.GetCount() < m_fileMaxFiles) &&
2134            config.Read(buf, &historyFile) && !historyFile.empty())
2135     {
2136         m_fileHistory.Add(historyFile);
2137
2138         buf.Printf(wxT("file%d"), (int)m_fileHistory.GetCount()+1);
2139         historyFile = wxEmptyString;
2140     }
2141
2142     AddFilesToMenu();
2143 }
2144
2145 void wxFileHistory::Save(wxConfigBase& config)
2146 {
2147     size_t i;
2148     for (i = 0; i < m_fileMaxFiles; i++)
2149     {
2150         wxString buf;
2151         buf.Printf(wxT("file%d"), (int)i+1);
2152         if (i < m_fileHistory.GetCount())
2153             config.Write(buf, wxString(m_fileHistory[i]));
2154         else
2155             config.Write(buf, wxEmptyString);
2156     }
2157 }
2158 #endif // wxUSE_CONFIG
2159
2160 void wxFileHistory::AddFilesToMenu()
2161 {
2162     if ( m_fileHistory.empty() )
2163         return;
2164
2165     for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2166           node;
2167           node = node->GetNext() )
2168     {
2169         AddFilesToMenu((wxMenu *) node->GetData());
2170     }
2171 }
2172
2173 void wxFileHistory::AddFilesToMenu(wxMenu* menu)
2174 {
2175     if ( m_fileHistory.empty() )
2176         return;
2177
2178     if ( menu->GetMenuItemCount() )
2179         menu->AppendSeparator();
2180
2181     for ( size_t i = 0; i < m_fileHistory.GetCount(); i++ )
2182     {
2183         menu->Append(m_idBase + i, GetMRUEntryLabel(i, m_fileHistory[i]));
2184     }
2185 }
2186
2187 // ----------------------------------------------------------------------------
2188 // Permits compatibility with existing file formats and functions that
2189 // manipulate files directly
2190 // ----------------------------------------------------------------------------
2191
2192 #if wxUSE_STD_IOSTREAM
2193
2194 bool wxTransferFileToStream(const wxString& filename, wxSTD ostream& stream)
2195 {
2196     wxFFile file(filename, _T("rb"));
2197     if ( !file.IsOpened() )
2198         return false;
2199
2200     char buf[4096];
2201
2202     size_t nRead;
2203     do
2204     {
2205         nRead = file.Read(buf, WXSIZEOF(buf));
2206         if ( file.Error() )
2207             return false;
2208
2209         stream.write(buf, nRead);
2210         if ( !stream )
2211             return false;
2212     }
2213     while ( !file.Eof() );
2214
2215     return true;
2216 }
2217
2218 bool wxTransferStreamToFile(wxSTD istream& stream, const wxString& filename)
2219 {
2220     wxFFile file(filename, _T("wb"));
2221     if ( !file.IsOpened() )
2222         return false;
2223
2224     char buf[4096];
2225     do
2226     {
2227         stream.read(buf, WXSIZEOF(buf));
2228         if ( !stream.bad() ) // fail may be set on EOF, don't use operator!()
2229         {
2230             if ( !file.Write(buf, stream.gcount()) )
2231                 return false;
2232         }
2233     }
2234     while ( !stream.eof() );
2235
2236     return true;
2237 }
2238
2239 #else // !wxUSE_STD_IOSTREAM
2240
2241 bool wxTransferFileToStream(const wxString& filename, wxOutputStream& stream)
2242 {
2243     wxFFile file(filename, _T("rb"));
2244     if ( !file.IsOpened() )
2245         return false;
2246
2247     char buf[4096];
2248
2249     size_t nRead;
2250     do
2251     {
2252         nRead = file.Read(buf, WXSIZEOF(buf));
2253         if ( file.Error() )
2254             return false;
2255
2256         stream.Write(buf, nRead);
2257         if ( !stream )
2258             return false;
2259     }
2260     while ( !file.Eof() );
2261
2262     return true;
2263 }
2264
2265 bool wxTransferStreamToFile(wxInputStream& stream, const wxString& filename)
2266 {
2267     wxFFile file(filename, _T("wb"));
2268     if ( !file.IsOpened() )
2269         return false;
2270
2271     char buf[4096];
2272     for ( ;; )
2273     {
2274         stream.Read(buf, WXSIZEOF(buf));
2275
2276         const size_t nRead = stream.LastRead();
2277         if ( !nRead )
2278         {
2279             if ( stream.Eof() )
2280                 break;
2281
2282             return false;
2283         }
2284
2285         if ( !file.Write(buf, nRead) )
2286             return false;
2287     }
2288
2289     return true;
2290 }
2291
2292 #endif // wxUSE_STD_IOSTREAM/!wxUSE_STD_IOSTREAM
2293
2294 #endif // wxUSE_DOC_VIEW_ARCHITECTURE