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 // Extend event processing to search the document's event table
 656 bool wxView::ProcessEvent(wxEvent& event)
 657 {
 658     if ( !GetDocument() || !GetDocument()->ProcessEvent(event) )
 659         return wxEvtHandler::ProcessEvent(event);
 660
 661     return true;
 662 }
 663
 664 void wxView::OnActivateView(bool WXUNUSED(activate), wxView *WXUNUSED(activeView), wxView *WXUNUSED(deactiveView))
 665 {
 666 }
 667
 668 void wxView::OnPrint(wxDC *dc, wxObject *WXUNUSED(info))
 669 {
 670     OnDraw(dc);
 671 }
 672
 673 void wxView::OnUpdate(wxView *WXUNUSED(sender), wxObject *WXUNUSED(hint))
 674 {
 675 }
 676
 677 void wxView::OnChangeFilename()
 678 {
 679     // GetFrame can return wxWindow rather than wxTopLevelWindow due to
 680     // generic MDI implementation so use SetLabel rather than SetTitle.
 681     // It should cause SetTitle() for top level windows.
 682     wxWindow *win = GetFrame();
 683     if (!win) return;
 684
 685     wxDocument *doc = GetDocument();
 686     if (!doc) return;
 687
 688     win->SetLabel(doc->GetUserReadableName());
 689 }
 690
 691 void wxView::SetDocument(wxDocument *doc)
 692 {
 693     m_viewDocument = doc;
 694     if (doc)
 695         doc->AddView(this);
 696 }
 697
 698 bool wxView::Close(bool deleteWindow)
 699 {
 700     return OnClose(deleteWindow);
 701 }
 702
 703 void wxView::Activate(bool activate)
 704 {
 705     if (GetDocument() && GetDocumentManager())
 706     {
 707         OnActivateView(activate, this, GetDocumentManager()->GetCurrentView());
 708         GetDocumentManager()->ActivateView(this, activate);
 709     }
 710 }
 711
 712 bool wxView::OnClose(bool WXUNUSED(deleteWindow))
 713 {
 714     return GetDocument() ? GetDocument()->Close() : true;
 715 }
 716
 717 #if wxUSE_PRINTING_ARCHITECTURE
 718 wxPrintout *wxView::OnCreatePrintout()
 719 {
 720     return new wxDocPrintout(this);
 721 }
 722 #endif // wxUSE_PRINTING_ARCHITECTURE
 723
 724 // ----------------------------------------------------------------------------
 725 // wxDocTemplate
 726 // ----------------------------------------------------------------------------
 727
 728 wxDocTemplate::wxDocTemplate(wxDocManager *manager,
 729                              const wxString& descr,
 730                              const wxString& filter,
 731                              const wxString& dir,
 732                              const wxString& ext,
 733                              const wxString& docTypeName,
 734                              const wxString& viewTypeName,
 735                              wxClassInfo *docClassInfo,
 736                              wxClassInfo *viewClassInfo,
 737                              long flags)
 738 {
 739     m_documentManager = manager;
 740     m_description = descr;
 741     m_directory = dir;
 742     m_defaultExt = ext;
 743     m_fileFilter = filter;
 744     m_flags = flags;
 745     m_docTypeName = docTypeName;
 746     m_viewTypeName = viewTypeName;
 747     m_documentManager->AssociateTemplate(this);
 748
 749     m_docClassInfo = docClassInfo;
 750     m_viewClassInfo = viewClassInfo;
 751 }
 752
 753 wxDocTemplate::~wxDocTemplate()
 754 {
 755     m_documentManager->DisassociateTemplate(this);
 756 }
 757
 758 // Tries to dynamically construct an object of the right class.
 759 wxDocument *wxDocTemplate::CreateDocument(const wxString& path, long flags)
 760 {
 761     wxDocument * const doc = DoCreateDocument();
 762
 763     // VZ: this code doesn't delete doc if InitDocument() (i.e. doc->OnCreate())
 764     //     fails, is this intentional?
 765
 766     return doc && InitDocument(doc, path, flags) ? doc : NULL;
 767 }
 768
 769 bool
 770 wxDocTemplate::InitDocument(wxDocument* doc, const wxString& path, long flags)
 771 {
 772     doc->SetFilename(path);
 773     doc->SetDocumentTemplate(this);
 774     GetDocumentManager()->AddDocument(doc);
 775     doc->SetCommandProcessor(doc->OnCreateCommandProcessor());
 776
 777     if (doc->OnCreate(path, flags))
 778         return true;
 779     else
 780     {
 781         if (GetDocumentManager()->GetDocuments().Member(doc))
 782             doc->DeleteAllViews();
 783         return false;
 784     }
 785 }
 786
 787 wxView *wxDocTemplate::CreateView(wxDocument *doc, long flags)
 788 {
 789     wxView *view = DoCreateView();
 790     if ( view == NULL )
 791         return NULL;
 792
 793     view->SetDocument(doc);
 794     if (view->OnCreate(doc, flags))
 795     {
 796         return view;
 797     }
 798     else
 799     {
 800         delete view;
 801         return NULL;
 802     }
 803 }
 804
 805 // The default (very primitive) format detection: check is the extension is
 806 // that of the template
 807 bool wxDocTemplate::FileMatchesTemplate(const wxString& path)
 808 {
 809     wxStringTokenizer parser (GetFileFilter(), wxT(";"));
 810     wxString anything = wxT ("*");
 811     while (parser.HasMoreTokens())
 812     {
 813         wxString filter = parser.GetNextToken();
 814         wxString filterExt = FindExtension (filter);
 815         if ( filter.IsSameAs (anything)    ||
 816              filterExt.IsSameAs (anything) ||
 817              filterExt.IsSameAs (FindExtension (path)) )
 818             return true;
 819     }
 820     return GetDefaultExtension().IsSameAs(FindExtension(path));
 821 }
 822
 823 wxDocument *wxDocTemplate::DoCreateDocument()
 824 {
 825     if (!m_docClassInfo)
 826         return NULL;
 827
 828     return (wxDocument *)m_docClassInfo->CreateObject();
 829 }
 830
 831 wxView *wxDocTemplate::DoCreateView()
 832 {
 833     if (!m_viewClassInfo)
 834         return NULL;
 835
 836     return (wxView *)m_viewClassInfo->CreateObject();
 837 }
 838
 839 // ----------------------------------------------------------------------------
 840 // wxDocManager
 841 // ----------------------------------------------------------------------------
 842
 843 BEGIN_EVENT_TABLE(wxDocManager, wxEvtHandler)
 844     EVT_MENU(wxID_OPEN, wxDocManager::OnFileOpen)
 845     EVT_MENU(wxID_CLOSE, wxDocManager::OnFileClose)
 846     EVT_MENU(wxID_CLOSE_ALL, wxDocManager::OnFileCloseAll)
 847     EVT_MENU(wxID_REVERT, wxDocManager::OnFileRevert)
 848     EVT_MENU(wxID_NEW, wxDocManager::OnFileNew)
 849     EVT_MENU(wxID_SAVE, wxDocManager::OnFileSave)
 850     EVT_MENU(wxID_SAVEAS, wxDocManager::OnFileSaveAs)
 851     EVT_MENU(wxID_UNDO, wxDocManager::OnUndo)
 852     EVT_MENU(wxID_REDO, wxDocManager::OnRedo)
 853
 854     EVT_UPDATE_UI(wxID_OPEN, wxDocManager::OnUpdateFileOpen)
 855     EVT_UPDATE_UI(wxID_CLOSE, wxDocManager::OnUpdateDisableIfNoDoc)
 856     EVT_UPDATE_UI(wxID_CLOSE_ALL, wxDocManager::OnUpdateDisableIfNoDoc)
 857     EVT_UPDATE_UI(wxID_REVERT, wxDocManager::OnUpdateDisableIfNoDoc)
 858     EVT_UPDATE_UI(wxID_NEW, wxDocManager::OnUpdateFileNew)
 859     EVT_UPDATE_UI(wxID_SAVE, wxDocManager::OnUpdateFileSave)
 860     EVT_UPDATE_UI(wxID_SAVEAS, wxDocManager::OnUpdateDisableIfNoDoc)
 861     EVT_UPDATE_UI(wxID_UNDO, wxDocManager::OnUpdateUndo)
 862     EVT_UPDATE_UI(wxID_REDO, wxDocManager::OnUpdateRedo)
 863
 864 #if wxUSE_PRINTING_ARCHITECTURE
 865     EVT_MENU(wxID_PRINT, wxDocManager::OnPrint)
 866     EVT_MENU(wxID_PREVIEW, wxDocManager::OnPreview)
 867
 868     EVT_UPDATE_UI(wxID_PRINT, wxDocManager::OnUpdateDisableIfNoDoc)
 869     EVT_UPDATE_UI(wxID_PREVIEW, wxDocManager::OnUpdateDisableIfNoDoc)
 870 #endif
 871 END_EVENT_TABLE()
 872
 873 wxDocManager* wxDocManager::sm_docManager = NULL;
 874
 875 wxDocManager::wxDocManager(long WXUNUSED(flags), bool initialize)
 876 {
 877     wxASSERT_MSG( !sm_docManager, "multiple wxDocManagers not allowed" );
 878
 879     sm_docManager = this;
 880
 881     m_defaultDocumentNameCounter = 1;
 882     m_currentView = NULL;
 883     m_maxDocsOpen = INT_MAX;
 884     m_fileHistory = NULL;
 885     if ( initialize )
 886         Initialize();
 887 }
 888
 889 wxDocManager::~wxDocManager()
 890 {
 891     Clear();
 892     delete m_fileHistory;
 893     sm_docManager = NULL;
 894 }
 895
 896 // closes the specified document
 897 bool wxDocManager::CloseDocument(wxDocument* doc, bool force)
 898 {
 899     if (doc->Close() || force)
 900     {
 901         // Implicitly deletes the document when
 902         // the last view is deleted
 903         doc->DeleteAllViews();
 904
 905         // Check we're really deleted
 906         if (m_docs.Member(doc))
 907             delete doc;
 908
 909         return true;
 910     }
 911     return false;
 912 }
 913
 914 bool wxDocManager::CloseDocuments(bool force)
 915 {
 916     wxList::compatibility_iterator node = m_docs.GetFirst();
 917     while (node)
 918     {
 919         wxDocument *doc = (wxDocument *)node->GetData();
 920         wxList::compatibility_iterator next = node->GetNext();
 921
 922         if (!CloseDocument(doc, force))
 923             return false;
 924
 925         // This assumes that documents are not connected in
 926         // any way, i.e. deleting one document does NOT
 927         // delete another.
 928         node = next;
 929     }
 930     return true;
 931 }
 932
 933 bool wxDocManager::Clear(bool force)
 934 {
 935     if (!CloseDocuments(force))
 936         return false;
 937
 938     m_currentView = NULL;
 939
 940     wxList::compatibility_iterator node = m_templates.GetFirst();
 941     while (node)
 942     {
 943         wxDocTemplate *templ = (wxDocTemplate*) node->GetData();
 944         wxList::compatibility_iterator next = node->GetNext();
 945         delete templ;
 946         node = next;
 947     }
 948     return true;
 949 }
 950
 951 bool wxDocManager::Initialize()
 952 {
 953     m_fileHistory = OnCreateFileHistory();
 954     return true;
 955 }
 956
 957 wxFileHistory *wxDocManager::OnCreateFileHistory()
 958 {
 959     return new wxFileHistory;
 960 }
 961
 962 void wxDocManager::OnFileClose(wxCommandEvent& WXUNUSED(event))
 963 {
 964     wxDocument *doc = GetCurrentDocument();
 965     if (!doc)
 966         return;
 967     if (doc->Close())
 968     {
 969         doc->DeleteAllViews();
 970         if (m_docs.Member(doc))
 971             delete doc;
 972     }
 973 }
 974
 975 void wxDocManager::OnFileCloseAll(wxCommandEvent& WXUNUSED(event))
 976 {
 977     CloseDocuments(false);
 978 }
 979
 980 void wxDocManager::OnFileNew(wxCommandEvent& WXUNUSED(event))
 981 {
 982     CreateDocument( wxEmptyString, wxDOC_NEW );
 983 }
 984
 985 void wxDocManager::OnFileOpen(wxCommandEvent& WXUNUSED(event))
 986 {
 987     if ( !CreateDocument( wxEmptyString, 0) )
 988     {
 989         OnOpenFileFailure();
 990     }
 991 }
 992
 993 void wxDocManager::OnFileRevert(wxCommandEvent& WXUNUSED(event))
 994 {
 995     wxDocument *doc = GetCurrentDocument();
 996     if (!doc)
 997         return;
 998     doc->Revert();
 999 }
1000
1001 void wxDocManager::OnFileSave(wxCommandEvent& WXUNUSED(event))
1002 {
1003     wxDocument *doc = GetCurrentDocument();
1004     if (!doc)
1005         return;
1006     doc->Save();
1007 }
1008
1009 void wxDocManager::OnFileSaveAs(wxCommandEvent& WXUNUSED(event))
1010 {
1011     wxDocument *doc = GetCurrentDocument();
1012     if (!doc)
1013         return;
1014     doc->SaveAs();
1015 }
1016
1017 void wxDocManager::OnPrint(wxCommandEvent& WXUNUSED(event))
1018 {
1019 #if wxUSE_PRINTING_ARCHITECTURE
1020     wxView *view = GetCurrentView();
1021     if (!view)
1022         return;
1023
1024     wxPrintout *printout = view->OnCreatePrintout();
1025     if (printout)
1026     {
1027         wxPrinter printer;
1028         printer.Print(view->GetFrame(), printout, true);
1029
1030         delete printout;
1031     }
1032 #endif // wxUSE_PRINTING_ARCHITECTURE
1033 }
1034
1035 void wxDocManager::OnPreview(wxCommandEvent& WXUNUSED(event))
1036 {
1037 #if wxUSE_PRINTING_ARCHITECTURE
1038     wxView *view = GetCurrentView();
1039     if (!view)
1040         return;
1041
1042     wxPrintout *printout = view->OnCreatePrintout();
1043     if (printout)
1044     {
1045         // Pass two printout objects: for preview, and possible printing.
1046         wxPrintPreviewBase *preview = new wxPrintPreview(printout, view->OnCreatePrintout());
1047         if ( !preview->Ok() )
1048         {
1049             delete preview;
1050             wxMessageBox( _("Sorry, print preview needs a printer to be installed.") );
1051             return;
1052         }
1053
1054         wxPreviewFrame *frame = new wxPreviewFrame(preview, (wxFrame *)wxTheApp->GetTopWindow(), _("Print Preview"),
1055                 wxPoint(100, 100), wxSize(600, 650));
1056         frame->Centre(wxBOTH);
1057         frame->Initialize();
1058         frame->Show(true);
1059     }
1060 #endif // wxUSE_PRINTING_ARCHITECTURE
1061 }
1062
1063 void wxDocManager::OnUndo(wxCommandEvent& event)
1064 {
1065     wxDocument *doc = GetCurrentDocument();
1066     if (!doc)
1067         return;
1068     if (doc->GetCommandProcessor())
1069         doc->GetCommandProcessor()->Undo();
1070     else
1071         event.Skip();
1072 }
1073
1074 void wxDocManager::OnRedo(wxCommandEvent& event)
1075 {
1076     wxDocument *doc = GetCurrentDocument();
1077     if (!doc)
1078         return;
1079     if (doc->GetCommandProcessor())
1080         doc->GetCommandProcessor()->Redo();
1081     else
1082         event.Skip();
1083 }
1084
1085 // Handlers for UI update commands
1086
1087 void wxDocManager::OnUpdateFileOpen(wxUpdateUIEvent& event)
1088 {
1089     event.Enable( true );
1090 }
1091
1092 void wxDocManager::OnUpdateDisableIfNoDoc(wxUpdateUIEvent& event)
1093 {
1094     event.Enable( GetCurrentDocument() != NULL );
1095 }
1096
1097 void wxDocManager::OnUpdateFileNew(wxUpdateUIEvent& event)
1098 {
1099     event.Enable( true );
1100 }
1101
1102 void wxDocManager::OnUpdateFileSave(wxUpdateUIEvent& event)
1103 {
1104     wxDocument *doc = GetCurrentDocument();
1105     event.Enable( doc && doc->IsModified() );
1106 }
1107
1108 void wxDocManager::OnUpdateUndo(wxUpdateUIEvent& event)
1109 {
1110     wxDocument *doc = GetCurrentDocument();
1111     if (!doc)
1112         event.Enable(false);
1113     else if (!doc->GetCommandProcessor())
1114         event.Skip();
1115     else
1116     {
1117         event.Enable( doc->GetCommandProcessor()->CanUndo() );
1118         doc->GetCommandProcessor()->SetMenuStrings();
1119     }
1120 }
1121
1122 void wxDocManager::OnUpdateRedo(wxUpdateUIEvent& event)
1123 {
1124     wxDocument *doc = GetCurrentDocument();
1125     if (!doc)
1126         event.Enable(false);
1127     else if (!doc->GetCommandProcessor())
1128         event.Skip();
1129     else
1130     {
1131         event.Enable( doc->GetCommandProcessor()->CanRedo() );
1132         doc->GetCommandProcessor()->SetMenuStrings();
1133     }
1134 }
1135
1136 wxView *wxDocManager::GetCurrentView() const
1137 {
1138     if (m_currentView)
1139         return m_currentView;
1140     if (m_docs.GetCount() == 1)
1141     {
1142         wxDocument* doc = (wxDocument*) m_docs.GetFirst()->GetData();
1143         return doc->GetFirstView();
1144     }
1145     return NULL;
1146 }
1147
1148 // Extend event processing to search the view's event table
1149 bool wxDocManager::ProcessEvent(wxEvent& event)
1150 {
1151     wxView * const view = GetCurrentView();
1152     if ( view && view->ProcessEvent(event) )
1153         return true;
1154
1155     return wxEvtHandler::ProcessEvent(event);
1156 }
1157
1158 namespace
1159 {
1160
1161 // helper function: return only the visible templates
1162 wxDocTemplates GetVisibleTemplates(const wxList& allTemplates)
1163 {
1164     // select only the visible templates
1165     const size_t totalNumTemplates = allTemplates.GetCount();
1166     wxDocTemplates templates;
1167     if ( totalNumTemplates )
1168     {
1169         templates.reserve(totalNumTemplates);
1170
1171         for ( wxList::const_iterator i = allTemplates.begin(),
1172                                    end = allTemplates.end();
1173               i != end;
1174               ++i )
1175         {
1176             wxDocTemplate * const temp = (wxDocTemplate *)*i;
1177             if ( temp->IsVisible() )
1178                 templates.push_back(temp);
1179         }
1180     }
1181
1182     return templates;
1183 }
1184
1185 } // anonymous namespace
1186
1187 wxDocument *wxDocManager::CreateDocument(const wxString& pathOrig, long flags)
1188 {
1189     // this ought to be const but SelectDocumentType/Path() are not
1190     // const-correct and can't be changed as, being virtual, this risks
1191     // breaking user code overriding them
1192     wxDocTemplates templates(GetVisibleTemplates(m_templates));
1193     const size_t numTemplates = templates.size();
1194     if ( !numTemplates )
1195     {
1196         // no templates can be used, can't create document
1197         return NULL;
1198     }
1199
1200
1201     // normally user should select the template to use but wxDOC_SILENT flag we
1202     // choose one ourselves
1203     wxString path = pathOrig;   // may be modified below
1204     wxDocTemplate *temp;
1205     if ( flags & wxDOC_SILENT )
1206     {
1207         wxASSERT_MSG( !path.empty(),
1208                       "using empty path with wxDOC_SILENT doesn't make sense" );
1209
1210         temp = FindTemplateForPath(path);
1211         if ( !temp )
1212         {
1213             wxLogWarning(_("The format of file '%s' couldn't be determined."),
1214                          path);
1215         }
1216     }
1217     else // not silent, ask the user
1218     {
1219         // for the new file we need just the template, for an existing one we
1220         // need the template and the path, unless it's already specified
1221         if ( (flags & wxDOC_NEW) || !path.empty() )
1222             temp = SelectDocumentType(&templates[0], numTemplates);
1223         else
1224             temp = SelectDocumentPath(&templates[0], numTemplates, path, flags);
1225     }
1226
1227     if ( !temp )
1228         return NULL;
1229
1230     // check whether the document with this path is already opened
1231     if ( !path.empty() )
1232     {
1233         const wxFileName fn(path);
1234         for ( wxList::const_iterator i = m_docs.begin(); i != m_docs.end(); ++i )
1235         {
1236             wxDocument * const doc = (wxDocument*)*i;
1237
1238             if ( fn == doc->GetFilename() )
1239             {
1240                 // file already open, just activate it and return
1241                 if ( doc->GetFirstView() )
1242                 {
1243                     ActivateView(doc->GetFirstView());
1244                     if ( doc->GetDocumentWindow() )
1245                         doc->GetDocumentWindow()->SetFocus();
1246                     return doc;
1247                 }
1248             }
1249         }
1250     }
1251
1252
1253     // no, we need to create a new document
1254
1255
1256     // if we've reached the max number of docs, close the first one.
1257     if ( (int)GetDocuments().GetCount() >= m_maxDocsOpen )
1258     {
1259         if ( !CloseDocument((wxDocument *)GetDocuments().GetFirst()->GetData()) )
1260         {
1261             // can't open the new document if closing the old one failed
1262             return NULL;
1263         }
1264     }
1265
1266
1267     // do create and initialize the new document finally
1268     wxDocument * const docNew = temp->CreateDocument(path, flags);
1269     if ( !docNew )
1270         return NULL;
1271
1272     docNew->SetDocumentName(temp->GetDocumentName());
1273     docNew->SetDocumentTemplate(temp);
1274
1275     // call the appropriate function depending on whether we're creating a new
1276     // file or opening an existing one
1277     if ( !(flags & wxDOC_NEW ? docNew->OnNewDocument()
1278                              : docNew->OnOpenDocument(path)) )
1279     {
1280          // Document is implicitly deleted by DeleteAllViews
1281          docNew->DeleteAllViews();
1282          return NULL;
1283     }
1284
1285     // add the successfully opened file to MRU, but only if we're going to be
1286     // able to reopen it successfully later which requires the template for
1287     // this document to be retrievable from the file extension
1288     if ( !(flags & wxDOC_NEW) && temp->FileMatchesTemplate(path) )
1289         AddFileToHistory(path);
1290
1291     return docNew;
1292 }
1293
1294 wxView *wxDocManager::CreateView(wxDocument *doc, long flags)
1295 {
1296     wxDocTemplates templates(GetVisibleTemplates(m_templates));
1297     const size_t numTemplates = templates.size();
1298
1299     if ( numTemplates == 0 )
1300         return NULL;
1301
1302     wxDocTemplate * const
1303     temp = numTemplates == 1 ? templates[0]
1304                              : SelectViewType(&templates[0], numTemplates);
1305
1306     if ( !temp )
1307         return NULL;
1308
1309     wxView *view = temp->CreateView(doc, flags);
1310     if ( view )
1311         view->SetViewName(temp->GetViewName());
1312     return view;
1313 }
1314
1315 // Not yet implemented
1316 void
1317 wxDocManager::DeleteTemplate(wxDocTemplate *WXUNUSED(temp), long WXUNUSED(flags))
1318 {
1319 }
1320
1321 // Not yet implemented
1322 bool wxDocManager::FlushDoc(wxDocument *WXUNUSED(doc))
1323 {
1324     return false;
1325 }
1326
1327 wxDocument *wxDocManager::GetCurrentDocument() const
1328 {
1329     wxView *view = GetCurrentView();
1330     if (view)
1331         return view->GetDocument();
1332     else
1333         return NULL;
1334 }
1335
1336 // Make a default name for a new document
1337 #if WXWIN_COMPATIBILITY_2_8
1338 bool wxDocManager::MakeDefaultName(wxString& WXUNUSED(name))
1339 {
1340     // we consider that this function can only be overridden by the user code,
1341     // not called by it as it only makes sense to call it internally, so we
1342     // don't bother to return anything from here
1343     return false;
1344 }
1345 #endif // WXWIN_COMPATIBILITY_2_8
1346
1347 wxString wxDocManager::MakeNewDocumentName()
1348 {
1349     wxString name;
1350
1351 #if WXWIN_COMPATIBILITY_2_8
1352     if ( !MakeDefaultName(name) )
1353 #endif // WXWIN_COMPATIBILITY_2_8
1354     {
1355         name.Printf(_("unnamed%d"), m_defaultDocumentNameCounter);
1356         m_defaultDocumentNameCounter++;
1357     }
1358
1359     return name;
1360 }
1361
1362 // Make a frame title (override this to do something different)
1363 // If docName is empty, a document is not currently active.
1364 wxString wxDocManager::MakeFrameTitle(wxDocument* doc)
1365 {
1366     wxString appName = wxTheApp->GetAppDisplayName();
1367     wxString title;
1368     if (!doc)
1369         title = appName;
1370     else
1371     {
1372         wxString docName = doc->GetUserReadableName();
1373         title = docName + wxString(_(" - ")) + appName;
1374     }
1375     return title;
1376 }
1377
1378
1379 // Not yet implemented
1380 wxDocTemplate *wxDocManager::MatchTemplate(const wxString& WXUNUSED(path))
1381 {
1382     return NULL;
1383 }
1384
1385 // File history management
1386 void wxDocManager::AddFileToHistory(const wxString& file)
1387 {
1388     if (m_fileHistory)
1389         m_fileHistory->AddFileToHistory(file);
1390 }
1391
1392 void wxDocManager::RemoveFileFromHistory(size_t i)
1393 {
1394     if (m_fileHistory)
1395         m_fileHistory->RemoveFileFromHistory(i);
1396 }
1397
1398 wxString wxDocManager::GetHistoryFile(size_t i) const
1399 {
1400     wxString histFile;
1401
1402     if (m_fileHistory)
1403         histFile = m_fileHistory->GetHistoryFile(i);
1404
1405     return histFile;
1406 }
1407
1408 void wxDocManager::FileHistoryUseMenu(wxMenu *menu)
1409 {
1410     if (m_fileHistory)
1411         m_fileHistory->UseMenu(menu);
1412 }
1413
1414 void wxDocManager::FileHistoryRemoveMenu(wxMenu *menu)
1415 {
1416     if (m_fileHistory)
1417         m_fileHistory->RemoveMenu(menu);
1418 }
1419
1420 #if wxUSE_CONFIG
1421 void wxDocManager::FileHistoryLoad(const wxConfigBase& config)
1422 {
1423     if (m_fileHistory)
1424         m_fileHistory->Load(config);
1425 }
1426
1427 void wxDocManager::FileHistorySave(wxConfigBase& config)
1428 {
1429     if (m_fileHistory)
1430         m_fileHistory->Save(config);
1431 }
1432 #endif
1433
1434 void wxDocManager::FileHistoryAddFilesToMenu(wxMenu* menu)
1435 {
1436     if (m_fileHistory)
1437         m_fileHistory->AddFilesToMenu(menu);
1438 }
1439
1440 void wxDocManager::FileHistoryAddFilesToMenu()
1441 {
1442     if (m_fileHistory)
1443         m_fileHistory->AddFilesToMenu();
1444 }
1445
1446 size_t wxDocManager::GetHistoryFilesCount() const
1447 {
1448     return m_fileHistory ? m_fileHistory->GetCount() : 0;
1449 }
1450
1451
1452 // Find out the document template via matching in the document file format
1453 // against that of the template
1454 wxDocTemplate *wxDocManager::FindTemplateForPath(const wxString& path)
1455 {
1456     wxDocTemplate *theTemplate = NULL;
1457
1458     // Find the template which this extension corresponds to
1459     for (size_t i = 0; i < m_templates.GetCount(); i++)
1460     {
1461         wxDocTemplate *temp = (wxDocTemplate *)m_templates.Item(i)->GetData();
1462         if ( temp->FileMatchesTemplate(path) )
1463         {
1464             theTemplate = temp;
1465             break;
1466         }
1467     }
1468     return theTemplate;
1469 }
1470
1471 // Prompts user to open a file, using file specs in templates.
1472 // Must extend the file selector dialog or implement own; OR
1473 // match the extension to the template extension.
1474
1475 wxDocTemplate *wxDocManager::SelectDocumentPath(wxDocTemplate **templates,
1476                                                 int noTemplates,
1477                                                 wxString& path,
1478                                                 long WXUNUSED(flags),
1479                                                 bool WXUNUSED(save))
1480 {
1481     // We can only have multiple filters in Windows and GTK
1482 #if defined(__WXMSW__) || defined(__WXGTK__) || defined(__WXMAC__)
1483     wxString descrBuf;
1484
1485     int i;
1486     for (i = 0; i < noTemplates; i++)
1487     {
1488         if (templates[i]->IsVisible())
1489         {
1490             // add a '|' to separate this filter from the previous one
1491             if ( !descrBuf.empty() )
1492                 descrBuf << wxT('|');
1493
1494             descrBuf << templates[i]->GetDescription()
1495                 << wxT(" (") << templates[i]->GetFileFilter() << wxT(") |")
1496                 << templates[i]->GetFileFilter();
1497         }
1498     }
1499 #else
1500     wxString descrBuf = wxT("*.*");
1501     wxUnusedVar(noTemplates);
1502 #endif
1503
1504     int FilterIndex = -1;
1505
1506     wxWindow* parent = wxFindSuitableParent();
1507
1508     wxString pathTmp = wxFileSelectorEx(_("Open File"),
1509                                         m_lastDirectory,
1510                                         wxEmptyString,
1511                                         &FilterIndex,
1512                                         descrBuf,
1513                                         0,
1514                                         parent);
1515
1516     wxDocTemplate *theTemplate = NULL;
1517     if (!pathTmp.empty())
1518     {
1519         if (!wxFileExists(pathTmp))
1520         {
1521             wxString msgTitle;
1522             if (!wxTheApp->GetAppDisplayName().empty())
1523                 msgTitle = wxTheApp->GetAppDisplayName();
1524             else
1525                 msgTitle = wxString(_("File error"));
1526
1527             (void)wxMessageBox(_("Sorry, could not open this file."), msgTitle, wxOK | wxICON_EXCLAMATION,
1528                 parent);
1529
1530             path = wxEmptyString;
1531             return NULL;
1532         }
1533         m_lastDirectory = wxPathOnly(pathTmp);
1534
1535         path = pathTmp;
1536
1537         // first choose the template using the extension, if this fails (i.e.
1538         // wxFileSelectorEx() didn't fill it), then use the path
1539         if ( FilterIndex != -1 )
1540             theTemplate = templates[FilterIndex];
1541         if ( !theTemplate )
1542             theTemplate = FindTemplateForPath(path);
1543         if ( !theTemplate )
1544         {
1545             // Since we do not add files with non-default extensions to the FileHistory this
1546             // can only happen if the application changes the allowed templates in runtime.
1547             (void)wxMessageBox(_("Sorry, the format for this file is unknown."),
1548                                 _("Open File"),
1549                                 wxOK | wxICON_EXCLAMATION, wxFindSuitableParent());
1550         }
1551     }
1552     else
1553     {
1554         path = wxEmptyString;
1555     }
1556
1557     return theTemplate;
1558 }
1559
1560 wxDocTemplate *wxDocManager::SelectDocumentType(wxDocTemplate **templates,
1561                                                 int noTemplates, bool sort)
1562 {
1563     wxArrayString strings;
1564     wxDocTemplate **data = new wxDocTemplate *[noTemplates];
1565     int i;
1566     int n = 0;
1567
1568     for (i = 0; i < noTemplates; i++)
1569     {
1570         if (templates[i]->IsVisible())
1571         {
1572             int j;
1573             bool want = true;
1574             for (j = 0; j < n; j++)
1575             {
1576                 //filter out NOT unique documents + view combinations
1577                 if ( templates[i]->m_docTypeName == data[j]->m_docTypeName &&
1578                      templates[i]->m_viewTypeName == data[j]->m_viewTypeName
1579                    )
1580                     want = false;
1581             }
1582
1583             if ( want )
1584             {
1585                 strings.Add(templates[i]->m_description);
1586
1587                 data[n] = templates[i];
1588                 n ++;
1589             }
1590         }
1591     }  // for
1592
1593     if (sort)
1594     {
1595         strings.Sort(); // ascending sort
1596         // Yes, this will be slow, but template lists
1597         // are typically short.
1598         int j;
1599         n = strings.Count();
1600         for (i = 0; i < n; i++)
1601         {
1602             for (j = 0; j < noTemplates; j++)
1603             {
1604                 if (strings[i] == templates[j]->m_description)
1605                     data[i] = templates[j];
1606             }
1607         }
1608     }
1609
1610     wxDocTemplate *theTemplate;
1611
1612     switch ( n )
1613     {
1614         case 0:
1615             // no visible templates, hence nothing to choose from
1616             theTemplate = NULL;
1617             break;
1618
1619         case 1:
1620             // don't propose the user to choose if he has no choice
1621             theTemplate = data[0];
1622             break;
1623
1624         default:
1625             // propose the user to choose one of several
1626             theTemplate = (wxDocTemplate *)wxGetSingleChoiceData
1627                           (
1628                             _("Select a document template"),
1629                             _("Templates"),
1630                             strings,
1631                             (void **)data,
1632                             wxFindSuitableParent()
1633                           );
1634     }
1635
1636     delete[] data;
1637
1638     return theTemplate;
1639 }
1640
1641 wxDocTemplate *wxDocManager::SelectViewType(wxDocTemplate **templates,
1642                                             int noTemplates, bool sort)
1643 {
1644     wxArrayString strings;
1645     wxDocTemplate **data = new wxDocTemplate *[noTemplates];
1646     int i;
1647     int n = 0;
1648
1649     for (i = 0; i < noTemplates; i++)
1650     {
1651         wxDocTemplate *templ = templates[i];
1652         if ( templ->IsVisible() && !templ->GetViewName().empty() )
1653         {
1654             int j;
1655             bool want = true;
1656             for (j = 0; j < n; j++)
1657             {
1658                 //filter out NOT unique views
1659                 if ( templates[i]->m_viewTypeName == data[j]->m_viewTypeName )
1660                     want = false;
1661             }
1662
1663             if ( want )
1664             {
1665                 strings.Add(templ->m_viewTypeName);
1666                 data[n] = templ;
1667                 n ++;
1668             }
1669         }
1670     }
1671
1672     if (sort)
1673     {
1674         strings.Sort(); // ascending sort
1675         // Yes, this will be slow, but template lists
1676         // are typically short.
1677         int j;
1678         n = strings.Count();
1679         for (i = 0; i < n; i++)
1680         {
1681             for (j = 0; j < noTemplates; j++)
1682             {
1683                 if (strings[i] == templates[j]->m_viewTypeName)
1684                     data[i] = templates[j];
1685             }
1686         }
1687     }
1688
1689     wxDocTemplate *theTemplate;
1690
1691     // the same logic as above
1692     switch ( n )
1693     {
1694         case 0:
1695             theTemplate = NULL;
1696             break;
1697
1698         case 1:
1699             theTemplate = data[0];
1700             break;
1701
1702         default:
1703             theTemplate = (wxDocTemplate *)wxGetSingleChoiceData
1704                           (
1705                             _("Select a document view"),
1706                             _("Views"),
1707                             strings,
1708                             (void **)data,
1709                             wxFindSuitableParent()
1710                           );
1711
1712     }
1713
1714     delete[] data;
1715     return theTemplate;
1716 }
1717
1718 void wxDocManager::AssociateTemplate(wxDocTemplate *temp)
1719 {
1720     if (!m_templates.Member(temp))
1721         m_templates.Append(temp);
1722 }
1723
1724 void wxDocManager::DisassociateTemplate(wxDocTemplate *temp)
1725 {
1726     m_templates.DeleteObject(temp);
1727 }
1728
1729 // Add and remove a document from the manager's list
1730 void wxDocManager::AddDocument(wxDocument *doc)
1731 {
1732     if (!m_docs.Member(doc))
1733         m_docs.Append(doc);
1734 }
1735
1736 void wxDocManager::RemoveDocument(wxDocument *doc)
1737 {
1738     m_docs.DeleteObject(doc);
1739 }
1740
1741 // Views or windows should inform the document manager
1742 // when a view is going in or out of focus
1743 void wxDocManager::ActivateView(wxView *view, bool activate)
1744 {
1745     if ( activate )
1746     {
1747         m_currentView = view;
1748     }
1749     else // deactivate
1750     {
1751         if ( m_currentView == view )
1752         {
1753             // don't keep stale pointer
1754             m_currentView = NULL;
1755         }
1756     }
1757 }
1758
1759 // ----------------------------------------------------------------------------
1760 // Default document child frame
1761 // ----------------------------------------------------------------------------
1762
1763 BEGIN_EVENT_TABLE(wxDocChildFrame, wxFrame)
1764     EVT_ACTIVATE(wxDocChildFrame::OnActivate)
1765     EVT_CLOSE(wxDocChildFrame::OnCloseWindow)
1766 END_EVENT_TABLE()
1767
1768 wxDocChildFrame::wxDocChildFrame(wxDocument *doc,
1769                                  wxView *view,
1770                                  wxFrame *frame,
1771                                  wxWindowID id,
1772                                  const wxString& title,
1773                                  const wxPoint& pos,
1774                                  const wxSize& size,
1775                                  long style,
1776                                  const wxString& name)
1777                : wxFrame(frame, id, title, pos, size, style, name)
1778 {
1779     m_childDocument = doc;
1780     m_childView = view;
1781     if (view)
1782         view->SetFrame(this);
1783 }
1784
1785 // Extend event processing to search the view's event table
1786 bool wxDocChildFrame::ProcessEvent(wxEvent& event)
1787 {
1788     if (m_childView)
1789         m_childView->Activate(true);
1790
1791     if ( !m_childView || ! m_childView->ProcessEvent(event) )
1792     {
1793         // Only hand up to the parent if it's a menu command
1794         if (!event.IsKindOf(CLASSINFO(wxCommandEvent)) || !GetParent() || !GetParent()->ProcessEvent(event))
1795             return wxEvtHandler::ProcessEvent(event);
1796         else
1797             return true;
1798     }
1799     else
1800         return true;
1801 }
1802
1803 void wxDocChildFrame::OnActivate(wxActivateEvent& event)
1804 {
1805     wxFrame::OnActivate(event);
1806
1807     if (m_childView)
1808         m_childView->Activate(event.GetActive());
1809 }
1810
1811 void wxDocChildFrame::OnCloseWindow(wxCloseEvent& event)
1812 {
1813     if (m_childView)
1814     {
1815         bool ans = event.CanVeto()
1816                     ? m_childView->Close(false) // false means don't delete associated window
1817                     : true; // Must delete.
1818
1819         if (ans)
1820         {
1821             m_childView->Activate(false);
1822             delete m_childView;
1823             m_childView = NULL;
1824             m_childDocument = NULL;
1825
1826             this->Destroy();
1827         }
1828         else
1829             event.Veto();
1830     }
1831     else
1832         event.Veto();
1833 }
1834
1835 // ----------------------------------------------------------------------------
1836 // Default parent frame
1837 // ----------------------------------------------------------------------------
1838
1839 BEGIN_EVENT_TABLE(wxDocParentFrame, wxFrame)
1840     EVT_MENU(wxID_EXIT, wxDocParentFrame::OnExit)
1841     EVT_MENU_RANGE(wxID_FILE1, wxID_FILE9, wxDocParentFrame::OnMRUFile)
1842     EVT_CLOSE(wxDocParentFrame::OnCloseWindow)
1843 END_EVENT_TABLE()
1844
1845 wxDocParentFrame::wxDocParentFrame()
1846 {
1847     m_docManager = NULL;
1848 }
1849
1850 wxDocParentFrame::wxDocParentFrame(wxDocManager *manager,
1851                                    wxFrame *frame,
1852                                    wxWindowID id,
1853                                    const wxString& title,
1854                                    const wxPoint& pos,
1855                                    const wxSize& size,
1856                                    long style,
1857                                    const wxString& name)
1858                 : wxFrame(frame, id, title, pos, size, style, name)
1859 {
1860     m_docManager = manager;
1861 }
1862
1863 bool wxDocParentFrame::Create(wxDocManager *manager,
1864                               wxFrame *frame,
1865                               wxWindowID id,
1866                               const wxString& title,
1867                               const wxPoint& pos,
1868                               const wxSize& size,
1869                               long style,
1870                               const wxString& name)
1871 {
1872     m_docManager = manager;
1873     return base_type::Create(frame, id, title, pos, size, style, name);
1874 }
1875
1876 void wxDocParentFrame::OnExit(wxCommandEvent& WXUNUSED(event))
1877 {
1878     Close();
1879 }
1880
1881 void wxDocParentFrame::OnMRUFile(wxCommandEvent& event)
1882 {
1883     int n = event.GetId() - wxID_FILE1;  // the index in MRU list
1884     wxString filename(m_docManager->GetHistoryFile(n));
1885     if ( filename.empty() )
1886         return;
1887
1888     wxString errMsg; // must contain exactly one "%s" if non-empty
1889     if ( wxFile::Exists(filename) )
1890     {
1891         // try to open it
1892         if ( m_docManager->CreateDocument(filename, wxDOC_SILENT) )
1893             return;
1894
1895         errMsg = _("The file '%s' couldn't be opened.");
1896     }
1897     else // file doesn't exist
1898     {
1899         errMsg = _("The file '%s' doesn't exist and couldn't be opened.");
1900     }
1901
1902
1903     wxASSERT_MSG( !errMsg.empty(), "should have an error message" );
1904
1905     // remove the file which we can't open from the MRU list
1906     m_docManager->RemoveFileFromHistory(n);
1907
1908     // and tell the user about it
1909     wxLogError(errMsg + '\n' +
1910                _("It has been removed from the most recently used files list."),
1911                filename);
1912 }
1913
1914 // Extend event processing to search the view's event table
1915 bool wxDocParentFrame::ProcessEvent(wxEvent& event)
1916 {
1917     // Try the document manager, then do default processing
1918     if (!m_docManager || !m_docManager->ProcessEvent(event))
1919         return wxEvtHandler::ProcessEvent(event);
1920     else
1921         return true;
1922 }
1923
1924 // Define the behaviour for the frame closing
1925 // - must delete all frames except for the main one.
1926 void wxDocParentFrame::OnCloseWindow(wxCloseEvent& event)
1927 {
1928     if (m_docManager->Clear(!event.CanVeto()))
1929     {
1930         this->Destroy();
1931     }
1932     else
1933         event.Veto();
1934 }
1935
1936 #if wxUSE_PRINTING_ARCHITECTURE
1937
1938 wxDocPrintout::wxDocPrintout(wxView *view, const wxString& title)
1939              : wxPrintout(title)
1940 {
1941     m_printoutView = view;
1942 }
1943
1944 bool wxDocPrintout::OnPrintPage(int WXUNUSED(page))
1945 {
1946     wxDC *dc = GetDC();
1947
1948     // Get the logical pixels per inch of screen and printer
1949     int ppiScreenX, ppiScreenY;
1950     GetPPIScreen(&ppiScreenX, &ppiScreenY);
1951     wxUnusedVar(ppiScreenY);
1952     int ppiPrinterX, ppiPrinterY;
1953     GetPPIPrinter(&ppiPrinterX, &ppiPrinterY);
1954     wxUnusedVar(ppiPrinterY);
1955
1956     // This scales the DC so that the printout roughly represents the
1957     // the screen scaling. The text point size _should_ be the right size
1958     // but in fact is too small for some reason. This is a detail that will
1959     // need to be addressed at some point but can be fudged for the
1960     // moment.
1961     float scale = (float)((float)ppiPrinterX/(float)ppiScreenX);
1962
1963     // Now we have to check in case our real page size is reduced
1964     // (e.g. because we're drawing to a print preview memory DC)
1965     int pageWidth, pageHeight;
1966     int w, h;
1967     dc->GetSize(&w, &h);
1968     GetPageSizePixels(&pageWidth, &pageHeight);
1969     wxUnusedVar(pageHeight);
1970
1971     // If printer pageWidth == current DC width, then this doesn't
1972     // change. But w might be the preview bitmap width, so scale down.
1973     float overallScale = scale * (float)(w/(float)pageWidth);
1974     dc->SetUserScale(overallScale, overallScale);
1975
1976     if (m_printoutView)
1977     {
1978         m_printoutView->OnDraw(dc);
1979     }
1980     return true;
1981 }
1982
1983 bool wxDocPrintout::HasPage(int pageNum)
1984 {
1985     return (pageNum == 1);
1986 }
1987
1988 bool wxDocPrintout::OnBeginDocument(int startPage, int endPage)
1989 {
1990     if (!wxPrintout::OnBeginDocument(startPage, endPage))
1991         return false;
1992
1993     return true;
1994 }
1995
1996 void wxDocPrintout::GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, int *selPageTo)
1997 {
1998     *minPage = 1;
1999     *maxPage = 1;
2000     *selPageFrom = 1;
2001     *selPageTo = 1;
2002 }
2003
2004 #endif // wxUSE_PRINTING_ARCHITECTURE
2005
2006 // ----------------------------------------------------------------------------
2007 // File history (a.k.a. MRU, most recently used, files list)
2008 // ----------------------------------------------------------------------------
2009
2010 wxFileHistory::wxFileHistory(size_t maxFiles, wxWindowID idBase)
2011 {
2012     m_fileMaxFiles = maxFiles;
2013     m_idBase = idBase;
2014 }
2015
2016 void wxFileHistory::AddFileToHistory(const wxString& file)
2017 {
2018     // check if we don't already have this file
2019     const wxFileName fnNew(file);
2020     size_t i,
2021            numFiles = m_fileHistory.size();
2022     for ( i = 0; i < numFiles; i++ )
2023     {
2024         if ( fnNew == m_fileHistory[i] )
2025         {
2026             // we do have it, move it to the top of the history
2027             RemoveFileFromHistory(i);
2028             numFiles--;
2029             break;
2030         }
2031     }
2032
2033     // if we already have a full history, delete the one at the end
2034     if ( numFiles == m_fileMaxFiles )
2035     {
2036         RemoveFileFromHistory(--numFiles);
2037     }
2038     else // add a new menu item to all file menus (will be updated below)
2039     {
2040         for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2041               node;
2042               node = node->GetNext() )
2043         {
2044             wxMenu * const menu = (wxMenu *)node->GetData();
2045
2046             if ( !numFiles && menu->GetMenuItemCount() )
2047                 menu->AppendSeparator();
2048
2049             // label doesn't matter, it will be set below anyhow, but it can't
2050             // be empty (this is supposed to indicate a stock item)
2051             menu->Append(m_idBase + numFiles, " ");
2052         }
2053     }
2054
2055
2056     // insert the new file in the beginning of the file history
2057     m_fileHistory.insert(m_fileHistory.begin(), file);
2058     numFiles++;
2059
2060     // update the labels in all menus
2061     for ( i = 0; i < numFiles; i++ )
2062     {
2063         // if in same directory just show the filename; otherwise the full path
2064         const wxFileName fnOld(m_fileHistory[i]);
2065
2066         wxString pathInMenu;
2067         if ( fnOld.GetPath() == fnNew.GetPath() )
2068         {
2069             pathInMenu = fnOld.GetFullName();
2070         }
2071         else // file in different directory
2072         {
2073             // absolute path; could also set relative path
2074             pathInMenu = m_fileHistory[i];
2075         }
2076
2077         for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2078               node;
2079               node = node->GetNext() )
2080         {
2081             wxMenu * const menu = (wxMenu *)node->GetData();
2082
2083             menu->SetLabel(m_idBase + i, GetMRUEntryLabel(i, pathInMenu));
2084         }
2085     }
2086 }
2087
2088 void wxFileHistory::RemoveFileFromHistory(size_t i)
2089 {
2090     size_t numFiles = m_fileHistory.size();
2091     wxCHECK_RET( i < numFiles,
2092                  wxT("invalid index in wxFileHistory::RemoveFileFromHistory") );
2093
2094     // delete the element from the array
2095     m_fileHistory.RemoveAt(i);
2096     numFiles--;
2097
2098     for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2099           node;
2100           node = node->GetNext() )
2101     {
2102         wxMenu * const menu = (wxMenu *) node->GetData();
2103
2104         // shift filenames up
2105         for ( size_t j = i; j < numFiles; j++ )
2106         {
2107             menu->SetLabel(m_idBase + j, GetMRUEntryLabel(j, m_fileHistory[j]));
2108         }
2109
2110         // delete the last menu item which is unused now
2111         const wxWindowID lastItemId = m_idBase + numFiles;
2112         if ( menu->FindItem(lastItemId) )
2113             menu->Delete(lastItemId);
2114
2115         // delete the last separator too if no more files are left
2116         if ( m_fileHistory.empty() )
2117         {
2118             const wxMenuItemList::compatibility_iterator
2119                 nodeLast = menu->GetMenuItems().GetLast();
2120             if ( nodeLast )
2121             {
2122                 wxMenuItem * const lastMenuItem = nodeLast->GetData();
2123                 if ( lastMenuItem->IsSeparator() )
2124                     menu->Delete(lastMenuItem);
2125             }
2126             //else: menu is empty somehow
2127         }
2128     }
2129 }
2130
2131 void wxFileHistory::UseMenu(wxMenu *menu)
2132 {
2133     if ( !m_fileMenus.Member(menu) )
2134         m_fileMenus.Append(menu);
2135 }
2136
2137 void wxFileHistory::RemoveMenu(wxMenu *menu)
2138 {
2139     m_fileMenus.DeleteObject(menu);
2140 }
2141
2142 #if wxUSE_CONFIG
2143 void wxFileHistory::Load(const wxConfigBase& config)
2144 {
2145     m_fileHistory.Clear();
2146
2147     wxString buf;
2148     buf.Printf(wxT("file%d"), 1);
2149
2150     wxString historyFile;
2151     while ((m_fileHistory.GetCount() < m_fileMaxFiles) &&
2152            config.Read(buf, &historyFile) && !historyFile.empty())
2153     {
2154         m_fileHistory.Add(historyFile);
2155
2156         buf.Printf(wxT("file%d"), (int)m_fileHistory.GetCount()+1);
2157         historyFile = wxEmptyString;
2158     }
2159
2160     AddFilesToMenu();
2161 }
2162
2163 void wxFileHistory::Save(wxConfigBase& config)
2164 {
2165     size_t i;
2166     for (i = 0; i < m_fileMaxFiles; i++)
2167     {
2168         wxString buf;
2169         buf.Printf(wxT("file%d"), (int)i+1);
2170         if (i < m_fileHistory.GetCount())
2171             config.Write(buf, wxString(m_fileHistory[i]));
2172         else
2173             config.Write(buf, wxEmptyString);
2174     }
2175 }
2176 #endif // wxUSE_CONFIG
2177
2178 void wxFileHistory::AddFilesToMenu()
2179 {
2180     if ( m_fileHistory.empty() )
2181         return;
2182
2183     for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2184           node;
2185           node = node->GetNext() )
2186     {
2187         AddFilesToMenu((wxMenu *) node->GetData());
2188     }
2189 }
2190
2191 void wxFileHistory::AddFilesToMenu(wxMenu* menu)
2192 {
2193     if ( m_fileHistory.empty() )
2194         return;
2195
2196     if ( menu->GetMenuItemCount() )
2197         menu->AppendSeparator();
2198
2199     for ( size_t i = 0; i < m_fileHistory.GetCount(); i++ )
2200     {
2201         menu->Append(m_idBase + i, GetMRUEntryLabel(i, m_fileHistory[i]));
2202     }
2203 }
2204
2205 // ----------------------------------------------------------------------------
2206 // Permits compatibility with existing file formats and functions that
2207 // manipulate files directly
2208 // ----------------------------------------------------------------------------
2209
2210 #if wxUSE_STD_IOSTREAM
2211
2212 bool wxTransferFileToStream(const wxString& filename, wxSTD ostream& stream)
2213 {
2214     wxFFile file(filename, _T("rb"));
2215     if ( !file.IsOpened() )
2216         return false;
2217
2218     char buf[4096];
2219
2220     size_t nRead;
2221     do
2222     {
2223         nRead = file.Read(buf, WXSIZEOF(buf));
2224         if ( file.Error() )
2225             return false;
2226
2227         stream.write(buf, nRead);
2228         if ( !stream )
2229             return false;
2230     }
2231     while ( !file.Eof() );
2232
2233     return true;
2234 }
2235
2236 bool wxTransferStreamToFile(wxSTD istream& stream, const wxString& filename)
2237 {
2238     wxFFile file(filename, _T("wb"));
2239     if ( !file.IsOpened() )
2240         return false;
2241
2242     char buf[4096];
2243     do
2244     {
2245         stream.read(buf, WXSIZEOF(buf));
2246         if ( !stream.bad() ) // fail may be set on EOF, don't use operator!()
2247         {
2248             if ( !file.Write(buf, stream.gcount()) )
2249                 return false;
2250         }
2251     }
2252     while ( !stream.eof() );
2253
2254     return true;
2255 }
2256
2257 #else // !wxUSE_STD_IOSTREAM
2258
2259 bool wxTransferFileToStream(const wxString& filename, wxOutputStream& stream)
2260 {
2261     wxFFile file(filename, _T("rb"));
2262     if ( !file.IsOpened() )
2263         return false;
2264
2265     char buf[4096];
2266
2267     size_t nRead;
2268     do
2269     {
2270         nRead = file.Read(buf, WXSIZEOF(buf));
2271         if ( file.Error() )
2272             return false;
2273
2274         stream.Write(buf, nRead);
2275         if ( !stream )
2276             return false;
2277     }
2278     while ( !file.Eof() );
2279
2280     return true;
2281 }
2282
2283 bool wxTransferStreamToFile(wxInputStream& stream, const wxString& filename)
2284 {
2285     wxFFile file(filename, _T("wb"));
2286     if ( !file.IsOpened() )
2287         return false;
2288
2289     char buf[4096];
2290     for ( ;; )
2291     {
2292         stream.Read(buf, WXSIZEOF(buf));
2293
2294         const size_t nRead = stream.LastRead();
2295         if ( !nRead )
2296         {
2297             if ( stream.Eof() )
2298                 break;
2299
2300             return false;
2301         }
2302
2303         if ( !file.Write(buf, nRead) )
2304             return false;
2305     }
2306
2307     return true;
2308 }
2309
2310 #endif // wxUSE_STD_IOSTREAM/!wxUSE_STD_IOSTREAM
2311
2312 #endif // wxUSE_DOC_VIEW_ARCHITECTURE