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/stdpaths.h"
  60 #include "wx/vector.h"
  61 #include "wx/scopedarray.h"
  62 #include "wx/scopedptr.h"
  63
  64 #if wxUSE_STD_IOSTREAM
  65     #include "wx/ioswrap.h"
  66     #include "wx/beforestd.h"
  67     #if wxUSE_IOSTREAMH
  68         #include <fstream.h>
  69     #else
  70         #include <fstream>
  71     #endif
  72     #include "wx/afterstd.h"
  73 #else
  74     #include "wx/wfstream.h"
  75 #endif
  76
  77 typedef wxVector<wxDocTemplate *> wxDocTemplates;
  78
  79 // ----------------------------------------------------------------------------
  80 // wxWidgets macros
  81 // ----------------------------------------------------------------------------
  82
  83 IMPLEMENT_ABSTRACT_CLASS(wxDocument, wxEvtHandler)
  84 IMPLEMENT_ABSTRACT_CLASS(wxView, wxEvtHandler)
  85 IMPLEMENT_ABSTRACT_CLASS(wxDocTemplate, wxObject)
  86 IMPLEMENT_DYNAMIC_CLASS(wxDocManager, wxEvtHandler)
  87 IMPLEMENT_CLASS(wxDocChildFrame, wxFrame)
  88 IMPLEMENT_CLASS(wxDocParentFrame, wxFrame)
  89
  90 #if wxUSE_PRINTING_ARCHITECTURE
  91     IMPLEMENT_DYNAMIC_CLASS(wxDocPrintout, wxPrintout)
  92 #endif
  93
  94 IMPLEMENT_DYNAMIC_CLASS(wxFileHistory, wxObject)
  95
  96 // ============================================================================
  97 // implementation
  98 // ============================================================================
  99
 100 // ----------------------------------------------------------------------------
 101 // private helpers
 102 // ----------------------------------------------------------------------------
 103
 104 namespace
 105 {
 106
 107 wxWindow *wxFindSuitableParent()
 108 {
 109     wxWindow * const win = wxGetTopLevelParent(wxWindow::FindFocus());
 110
 111     return win ? win : wxTheApp->GetTopWindow();
 112 }
 113
 114 wxString FindExtension(const wxString& path)
 115 {
 116     wxString ext;
 117     wxFileName::SplitPath(path, NULL, NULL, &ext);
 118
 119     // VZ: extensions are considered not case sensitive - is this really a good
 120     //     idea?
 121     return ext.MakeLower();
 122 }
 123
 124 // return the string used for the MRU list items in the menu
 125 //
 126 // NB: the index n is 0-based, as usual, but the strings start from 1
 127 wxString GetMRUEntryLabel(int n, const wxString& path)
 128 {
 129     // we need to quote '&' characters which are used for mnemonics
 130     wxString pathInMenu(path);
 131     pathInMenu.Replace("&", "&&");
 132
 133     return wxString::Format("&%d %s", n + 1, pathInMenu);
 134 }
 135
 136 } // anonymous namespace
 137
 138 // ----------------------------------------------------------------------------
 139 // Definition of wxDocument
 140 // ----------------------------------------------------------------------------
 141
 142 wxDocument::wxDocument(wxDocument *parent)
 143 {
 144     m_documentModified = false;
 145     m_documentParent = parent;
 146     m_documentTemplate = NULL;
 147     m_commandProcessor = NULL;
 148     m_savedYet = false;
 149 }
 150
 151 bool wxDocument::DeleteContents()
 152 {
 153     return true;
 154 }
 155
 156 wxDocument::~wxDocument()
 157 {
 158     DeleteContents();
 159
 160     delete m_commandProcessor;
 161
 162     if (GetDocumentManager())
 163         GetDocumentManager()->RemoveDocument(this);
 164
 165     // Not safe to do here, since it'll invoke virtual view functions
 166     // expecting to see valid derived objects: and by the time we get here,
 167     // we've called destructors higher up.
 168     //DeleteAllViews();
 169 }
 170
 171 bool wxDocument::Close()
 172 {
 173     if ( !OnSaveModified() )
 174         return false;
 175
 176     return OnCloseDocument();
 177 }
 178
 179 bool wxDocument::OnCloseDocument()
 180 {
 181     // Tell all views that we're about to close
 182     NotifyClosing();
 183     DeleteContents();
 184     Modify(false);
 185     return true;
 186 }
 187
 188 // Note that this implicitly deletes the document when the last view is
 189 // deleted.
 190 bool wxDocument::DeleteAllViews()
 191 {
 192     wxDocManager* manager = GetDocumentManager();
 193
 194     // first check if all views agree to be closed
 195     const wxList::iterator end = m_documentViews.end();
 196     for ( wxList::iterator i = m_documentViews.begin(); i != end; ++i )
 197     {
 198         wxView *view = (wxView *)*i;
 199         if ( !view->Close() )
 200             return false;
 201     }
 202
 203     // all views agreed to close, now do close them
 204     if ( m_documentViews.empty() )
 205     {
 206         // normally the document would be implicitly deleted when the last view
 207         // is, but if don't have any views, do it here instead
 208         if ( manager && manager->GetDocuments().Member(this) )
 209             delete this;
 210     }
 211     else // have views
 212     {
 213         // as we delete elements we iterate over, don't use the usual "from
 214         // begin to end" loop
 215         for ( ;; )
 216         {
 217             wxView *view = (wxView *)*m_documentViews.begin();
 218
 219             bool isLastOne = m_documentViews.size() == 1;
 220
 221             // this always deletes the node implicitly and if this is the last
 222             // view also deletes this object itself (also implicitly, great),
 223             // so we can't test for m_documentViews.empty() after calling this!
 224             delete view;
 225
 226             if ( isLastOne )
 227                 break;
 228         }
 229     }
 230
 231     return true;
 232 }
 233
 234 wxView *wxDocument::GetFirstView() const
 235 {
 236     if ( m_documentViews.empty() )
 237         return NULL;
 238
 239     return static_cast<wxView *>(m_documentViews.GetFirst()->GetData());
 240 }
 241
 242 wxDocManager *wxDocument::GetDocumentManager() const
 243 {
 244     return m_documentTemplate ? m_documentTemplate->GetDocumentManager() : NULL;
 245 }
 246
 247 bool wxDocument::OnNewDocument()
 248 {
 249     if ( !OnSaveModified() )
 250         return false;
 251
 252     DeleteContents();
 253     Modify(false);
 254     SetDocumentSaved(false);
 255
 256     const wxString name = GetDocumentManager()->MakeNewDocumentName();
 257     SetTitle(name);
 258     SetFilename(name, true);
 259
 260     return true;
 261 }
 262
 263 bool wxDocument::Save()
 264 {
 265     if ( AlreadySaved() )
 266         return true;
 267
 268     if ( m_documentFile.empty() || !m_savedYet )
 269         return SaveAs();
 270
 271     return OnSaveDocument(m_documentFile);
 272 }
 273
 274 bool wxDocument::SaveAs()
 275 {
 276     wxDocTemplate *docTemplate = GetDocumentTemplate();
 277     if (!docTemplate)
 278         return false;
 279
 280 #ifdef wxHAS_MULTIPLE_FILEDLG_FILTERS
 281     wxString filter = docTemplate->GetDescription() + wxT(" (") +
 282         docTemplate->GetFileFilter() + wxT(")|") +
 283         docTemplate->GetFileFilter();
 284
 285     // Now see if there are some other template with identical view and document
 286     // classes, whose filters may also be used.
 287     if (docTemplate->GetViewClassInfo() && docTemplate->GetDocClassInfo())
 288     {
 289         wxList::compatibility_iterator
 290             node = docTemplate->GetDocumentManager()->GetTemplates().GetFirst();
 291         while (node)
 292         {
 293             wxDocTemplate *t = (wxDocTemplate*) node->GetData();
 294
 295             if (t->IsVisible() && t != docTemplate &&
 296                 t->GetViewClassInfo() == docTemplate->GetViewClassInfo() &&
 297                 t->GetDocClassInfo() == docTemplate->GetDocClassInfo())
 298             {
 299                 // add a '|' to separate this filter from the previous one
 300                 if ( !filter.empty() )
 301                     filter << wxT('|');
 302
 303                 filter << t->GetDescription()
 304                        << wxT(" (") << t->GetFileFilter() << wxT(") |")
 305                        << t->GetFileFilter();
 306             }
 307
 308             node = node->GetNext();
 309         }
 310     }
 311 #else
 312     wxString filter = docTemplate->GetFileFilter() ;
 313 #endif
 314
 315     wxString defaultDir = docTemplate->GetDirectory();
 316     if ( defaultDir.empty() )
 317     {
 318         defaultDir = wxPathOnly(GetFilename());
 319         if ( defaultDir.empty() )
 320             defaultDir = GetDocumentManager()->GetLastDirectory();
 321     }
 322
 323     wxString fileName = wxFileSelector(_("Save As"),
 324             defaultDir,
 325             wxFileNameFromPath(GetFilename()),
 326             docTemplate->GetDefaultExtension(),
 327             filter,
 328             wxFD_SAVE | wxFD_OVERWRITE_PROMPT,
 329             GetDocumentWindow());
 330
 331     if (fileName.empty())
 332         return false; // cancelled by user
 333
 334     wxString ext;
 335     wxFileName::SplitPath(fileName, NULL, NULL, &ext);
 336
 337     if (ext.empty())
 338     {
 339         fileName += wxT(".");
 340         fileName += docTemplate->GetDefaultExtension();
 341     }
 342
 343     // Files that were not saved correctly are not added to the FileHistory.
 344     if (!OnSaveDocument(fileName))
 345         return false;
 346
 347     SetTitle(wxFileNameFromPath(fileName));
 348     SetFilename(fileName, true);    // will call OnChangeFileName automatically
 349
 350    // A file that doesn't use the default extension of its document template
 351    // cannot be opened via the FileHistory, so we do not add it.
 352    if (docTemplate->FileMatchesTemplate(fileName))
 353    {
 354        GetDocumentManager()->AddFileToHistory(fileName);
 355    }
 356    //else: the user will probably not be able to open the file again, so we
 357    //      could warn about the wrong file-extension here
 358
 359    return true;
 360 }
 361
 362 bool wxDocument::OnSaveDocument(const wxString& file)
 363 {
 364     if ( !file )
 365         return false;
 366
 367     if ( !DoSaveDocument(file) )
 368         return false;
 369
 370     Modify(false);
 371     SetFilename(file);
 372     SetDocumentSaved(true);
 373 #if defined( __WXOSX_MAC__ ) && wxOSX_USE_CARBON
 374     wxFileName fn(file) ;
 375     fn.MacSetDefaultTypeAndCreator() ;
 376 #endif
 377     return true;
 378 }
 379
 380 bool wxDocument::OnOpenDocument(const wxString& file)
 381 {
 382     if ( !OnSaveModified() )
 383         return false;
 384
 385     if ( !DoOpenDocument(file) )
 386         return false;
 387
 388     SetFilename(file, true);
 389     Modify(false);
 390     m_savedYet = true;
 391
 392     UpdateAllViews();
 393
 394     return true;
 395 }
 396
 397 #if wxUSE_STD_IOSTREAM
 398 wxSTD istream& wxDocument::LoadObject(wxSTD istream& stream)
 399 #else
 400 wxInputStream& wxDocument::LoadObject(wxInputStream& stream)
 401 #endif
 402 {
 403     return stream;
 404 }
 405
 406 #if wxUSE_STD_IOSTREAM
 407 wxSTD ostream& wxDocument::SaveObject(wxSTD ostream& stream)
 408 #else
 409 wxOutputStream& wxDocument::SaveObject(wxOutputStream& stream)
 410 #endif
 411 {
 412     return stream;
 413 }
 414
 415 bool wxDocument::Revert()
 416 {
 417     return false;
 418 }
 419
 420
 421 // Get title, or filename if no title, else unnamed
 422 #if WXWIN_COMPATIBILITY_2_8
 423 bool wxDocument::GetPrintableName(wxString& buf) const
 424 {
 425     // this function can not only be overridden by the user code but also
 426     // called by it so we need to ensure that we return the same thing as
 427     // GetUserReadableName() but we can't call it because this would result in
 428     // an infinite recursion, hence we use the helper DoGetUserReadableName()
 429     buf = DoGetUserReadableName();
 430
 431     return true;
 432 }
 433 #endif // WXWIN_COMPATIBILITY_2_8
 434
 435 wxString wxDocument::GetUserReadableName() const
 436 {
 437 #if WXWIN_COMPATIBILITY_2_8
 438     // we need to call the old virtual function to ensure that the overridden
 439     // version of it is still called
 440     wxString name;
 441     if ( GetPrintableName(name) )
 442         return name;
 443 #endif // WXWIN_COMPATIBILITY_2_8
 444
 445     return DoGetUserReadableName();
 446 }
 447
 448 wxString wxDocument::DoGetUserReadableName() const
 449 {
 450     if ( !m_documentTitle.empty() )
 451         return m_documentTitle;
 452
 453     if ( !m_documentFile.empty() )
 454         return wxFileNameFromPath(m_documentFile);
 455
 456     return _("unnamed");
 457 }
 458
 459 wxWindow *wxDocument::GetDocumentWindow() const
 460 {
 461     wxView * const view = GetFirstView();
 462
 463     return view ? view->GetFrame() : wxTheApp->GetTopWindow();
 464 }
 465
 466 wxCommandProcessor *wxDocument::OnCreateCommandProcessor()
 467 {
 468     return new wxCommandProcessor;
 469 }
 470
 471 // true if safe to close
 472 bool wxDocument::OnSaveModified()
 473 {
 474     if ( IsModified() )
 475     {
 476         switch ( wxMessageBox
 477                  (
 478                     wxString::Format
 479                     (
 480                      _("Do you want to save changes to %s?"),
 481                      GetUserReadableName()
 482                     ),
 483                     wxTheApp->GetAppDisplayName(),
 484                     wxYES_NO | wxCANCEL | wxICON_QUESTION | wxCENTRE,
 485                     wxFindSuitableParent()
 486                  ) )
 487         {
 488             case wxNO:
 489                 Modify(false);
 490                 break;
 491
 492             case wxYES:
 493                 return Save();
 494
 495             case wxCANCEL:
 496                 return false;
 497         }
 498     }
 499
 500     return true;
 501 }
 502
 503 bool wxDocument::Draw(wxDC& WXUNUSED(context))
 504 {
 505     return true;
 506 }
 507
 508 bool wxDocument::AddView(wxView *view)
 509 {
 510     if ( !m_documentViews.Member(view) )
 511     {
 512         m_documentViews.Append(view);
 513         OnChangedViewList();
 514     }
 515     return true;
 516 }
 517
 518 bool wxDocument::RemoveView(wxView *view)
 519 {
 520     (void)m_documentViews.DeleteObject(view);
 521     OnChangedViewList();
 522     return true;
 523 }
 524
 525 bool wxDocument::OnCreate(const wxString& WXUNUSED(path), long flags)
 526 {
 527     return GetDocumentTemplate()->CreateView(this, flags) != NULL;
 528 }
 529
 530 // Called after a view is added or removed.
 531 // The default implementation deletes the document if
 532 // there are no more views.
 533 void wxDocument::OnChangedViewList()
 534 {
 535     if ( m_documentViews.empty() && OnSaveModified() )
 536         delete this;
 537 }
 538
 539 void wxDocument::UpdateAllViews(wxView *sender, wxObject *hint)
 540 {
 541     wxList::compatibility_iterator node = m_documentViews.GetFirst();
 542     while (node)
 543     {
 544         wxView *view = (wxView *)node->GetData();
 545         if (view != sender)
 546             view->OnUpdate(sender, hint);
 547         node = node->GetNext();
 548     }
 549 }
 550
 551 void wxDocument::NotifyClosing()
 552 {
 553     wxList::compatibility_iterator node = m_documentViews.GetFirst();
 554     while (node)
 555     {
 556         wxView *view = (wxView *)node->GetData();
 557         view->OnClosingDocument();
 558         node = node->GetNext();
 559     }
 560 }
 561
 562 void wxDocument::SetFilename(const wxString& filename, bool notifyViews)
 563 {
 564     m_documentFile = filename;
 565     OnChangeFilename(notifyViews);
 566 }
 567
 568 void wxDocument::OnChangeFilename(bool notifyViews)
 569 {
 570     if ( notifyViews )
 571     {
 572         // Notify the views that the filename has changed
 573         wxList::compatibility_iterator node = m_documentViews.GetFirst();
 574         while (node)
 575         {
 576             wxView *view = (wxView *)node->GetData();
 577             view->OnChangeFilename();
 578             node = node->GetNext();
 579         }
 580     }
 581 }
 582
 583 bool wxDocument::DoSaveDocument(const wxString& file)
 584 {
 585 #if wxUSE_STD_IOSTREAM
 586     wxSTD ofstream store(file.mb_str(), wxSTD ios::binary);
 587     if ( !store )
 588 #else
 589     wxFileOutputStream store(file);
 590     if ( store.GetLastError() != wxSTREAM_NO_ERROR )
 591 #endif
 592     {
 593         wxLogError(_("File \"%s\" could not be opened for writing."), file);
 594         return false;
 595     }
 596
 597     if (!SaveObject(store))
 598     {
 599         wxLogError(_("Failed to save document to the file \"%s\"."), file);
 600         return false;
 601     }
 602
 603     return true;
 604 }
 605
 606 bool wxDocument::DoOpenDocument(const wxString& file)
 607 {
 608 #if wxUSE_STD_IOSTREAM
 609     wxSTD ifstream store(file.mb_str(), wxSTD ios::binary);
 610     if ( !store )
 611 #else
 612     wxFileInputStream store(file);
 613     if (store.GetLastError() != wxSTREAM_NO_ERROR || !store.IsOk())
 614 #endif
 615     {
 616         wxLogError(_("File \"%s\" could not be opened for reading."), file);
 617         return false;
 618     }
 619
 620 #if wxUSE_STD_IOSTREAM
 621     LoadObject(store);
 622     if ( !store )
 623 #else
 624     int res = LoadObject(store).GetLastError();
 625     if ( res != wxSTREAM_NO_ERROR && res != wxSTREAM_EOF )
 626 #endif
 627     {
 628         wxLogError(_("Failed to read document from the file \"%s\"."), file);
 629         return false;
 630     }
 631
 632     return true;
 633 }
 634
 635
 636 // ----------------------------------------------------------------------------
 637 // Document view
 638 // ----------------------------------------------------------------------------
 639
 640 wxView::wxView()
 641 {
 642     m_viewDocument = NULL;
 643
 644     m_viewFrame = NULL;
 645
 646     m_docChildFrame = NULL;
 647 }
 648
 649 wxView::~wxView()
 650 {
 651     GetDocumentManager()->ActivateView(this, false);
 652
 653     // reset our frame view first, before removing it from the document as
 654     // SetView(NULL) is a simple call while RemoveView() may result in user
 655     // code being executed and this user code can, for example, show a message
 656     // box which would result in an activation event for m_docChildFrame and so
 657     // could reactivate the view being destroyed -- unless we reset it first
 658     if ( m_docChildFrame && m_docChildFrame->GetView() == this )
 659         m_docChildFrame->SetView(NULL);
 660
 661     if ( m_viewDocument )
 662         m_viewDocument->RemoveView(this);
 663 }
 664
 665 bool wxView::TryBefore(wxEvent& event)
 666 {
 667     wxDocument * const doc = GetDocument();
 668     return doc && doc->ProcessEventHere(event);
 669 }
 670
 671 void wxView::OnActivateView(bool WXUNUSED(activate),
 672                             wxView *WXUNUSED(activeView),
 673                             wxView *WXUNUSED(deactiveView))
 674 {
 675 }
 676
 677 void wxView::OnPrint(wxDC *dc, wxObject *WXUNUSED(info))
 678 {
 679     OnDraw(dc);
 680 }
 681
 682 void wxView::OnUpdate(wxView *WXUNUSED(sender), wxObject *WXUNUSED(hint))
 683 {
 684 }
 685
 686 void wxView::OnChangeFilename()
 687 {
 688     // GetFrame can return wxWindow rather than wxTopLevelWindow due to
 689     // generic MDI implementation so use SetLabel rather than SetTitle.
 690     // It should cause SetTitle() for top level windows.
 691     wxWindow *win = GetFrame();
 692     if (!win) return;
 693
 694     wxDocument *doc = GetDocument();
 695     if (!doc) return;
 696
 697     win->SetLabel(doc->GetUserReadableName());
 698 }
 699
 700 void wxView::SetDocument(wxDocument *doc)
 701 {
 702     m_viewDocument = doc;
 703     if (doc)
 704         doc->AddView(this);
 705 }
 706
 707 bool wxView::Close(bool deleteWindow)
 708 {
 709     return OnClose(deleteWindow);
 710 }
 711
 712 void wxView::Activate(bool activate)
 713 {
 714     if (GetDocument() && GetDocumentManager())
 715     {
 716         OnActivateView(activate, this, GetDocumentManager()->GetCurrentView());
 717         GetDocumentManager()->ActivateView(this, activate);
 718     }
 719 }
 720
 721 bool wxView::OnClose(bool WXUNUSED(deleteWindow))
 722 {
 723     return GetDocument() ? GetDocument()->Close() : true;
 724 }
 725
 726 #if wxUSE_PRINTING_ARCHITECTURE
 727 wxPrintout *wxView::OnCreatePrintout()
 728 {
 729     return new wxDocPrintout(this);
 730 }
 731 #endif // wxUSE_PRINTING_ARCHITECTURE
 732
 733 // ----------------------------------------------------------------------------
 734 // wxDocTemplate
 735 // ----------------------------------------------------------------------------
 736
 737 wxDocTemplate::wxDocTemplate(wxDocManager *manager,
 738                              const wxString& descr,
 739                              const wxString& filter,
 740                              const wxString& dir,
 741                              const wxString& ext,
 742                              const wxString& docTypeName,
 743                              const wxString& viewTypeName,
 744                              wxClassInfo *docClassInfo,
 745                              wxClassInfo *viewClassInfo,
 746                              long flags)
 747 {
 748     m_documentManager = manager;
 749     m_description = descr;
 750     m_directory = dir;
 751     m_defaultExt = ext;
 752     m_fileFilter = filter;
 753     m_flags = flags;
 754     m_docTypeName = docTypeName;
 755     m_viewTypeName = viewTypeName;
 756     m_documentManager->AssociateTemplate(this);
 757
 758     m_docClassInfo = docClassInfo;
 759     m_viewClassInfo = viewClassInfo;
 760 }
 761
 762 wxDocTemplate::~wxDocTemplate()
 763 {
 764     m_documentManager->DisassociateTemplate(this);
 765 }
 766
 767 // Tries to dynamically construct an object of the right class.
 768 wxDocument *wxDocTemplate::CreateDocument(const wxString& path, long flags)
 769 {
 770     wxDocument * const doc = DoCreateDocument();
 771
 772     // VZ: this code doesn't delete doc if InitDocument() (i.e. doc->OnCreate())
 773     //     fails, is this intentional?
 774
 775     return doc && InitDocument(doc, path, flags) ? doc : NULL;
 776 }
 777
 778 bool
 779 wxDocTemplate::InitDocument(wxDocument* doc, const wxString& path, long flags)
 780 {
 781     doc->SetFilename(path);
 782     doc->SetDocumentTemplate(this);
 783     GetDocumentManager()->AddDocument(doc);
 784     doc->SetCommandProcessor(doc->OnCreateCommandProcessor());
 785
 786     if (doc->OnCreate(path, flags))
 787         return true;
 788
 789     if (GetDocumentManager()->GetDocuments().Member(doc))
 790         doc->DeleteAllViews();
 791     return false;
 792 }
 793
 794 wxView *wxDocTemplate::CreateView(wxDocument *doc, long flags)
 795 {
 796     wxScopedPtr<wxView> view(DoCreateView());
 797     if ( !view )
 798         return NULL;
 799
 800     view->SetDocument(doc);
 801     if ( !view->OnCreate(doc, flags) )
 802         return NULL;
 803
 804     return view.release();
 805 }
 806
 807 // The default (very primitive) format detection: check is the extension is
 808 // that of the template
 809 bool wxDocTemplate::FileMatchesTemplate(const wxString& path)
 810 {
 811     wxStringTokenizer parser (GetFileFilter(), wxT(";"));
 812     wxString anything = wxT ("*");
 813     while (parser.HasMoreTokens())
 814     {
 815         wxString filter = parser.GetNextToken();
 816         wxString filterExt = FindExtension (filter);
 817         if ( filter.IsSameAs (anything)    ||
 818              filterExt.IsSameAs (anything) ||
 819              filterExt.IsSameAs (FindExtension (path)) )
 820             return true;
 821     }
 822     return GetDefaultExtension().IsSameAs(FindExtension(path));
 823 }
 824
 825 wxDocument *wxDocTemplate::DoCreateDocument()
 826 {
 827     if (!m_docClassInfo)
 828         return NULL;
 829
 830     return static_cast<wxDocument *>(m_docClassInfo->CreateObject());
 831 }
 832
 833 wxView *wxDocTemplate::DoCreateView()
 834 {
 835     if (!m_viewClassInfo)
 836         return NULL;
 837
 838     return static_cast<wxView *>(m_viewClassInfo->CreateObject());
 839 }
 840
 841 // ----------------------------------------------------------------------------
 842 // wxDocManager
 843 // ----------------------------------------------------------------------------
 844
 845 BEGIN_EVENT_TABLE(wxDocManager, wxEvtHandler)
 846     EVT_MENU(wxID_OPEN, wxDocManager::OnFileOpen)
 847     EVT_MENU(wxID_CLOSE, wxDocManager::OnFileClose)
 848     EVT_MENU(wxID_CLOSE_ALL, wxDocManager::OnFileCloseAll)
 849     EVT_MENU(wxID_REVERT, wxDocManager::OnFileRevert)
 850     EVT_MENU(wxID_NEW, wxDocManager::OnFileNew)
 851     EVT_MENU(wxID_SAVE, wxDocManager::OnFileSave)
 852     EVT_MENU(wxID_SAVEAS, wxDocManager::OnFileSaveAs)
 853     EVT_MENU(wxID_UNDO, wxDocManager::OnUndo)
 854     EVT_MENU(wxID_REDO, wxDocManager::OnRedo)
 855
 856     EVT_UPDATE_UI(wxID_OPEN, wxDocManager::OnUpdateFileOpen)
 857     EVT_UPDATE_UI(wxID_CLOSE, wxDocManager::OnUpdateDisableIfNoDoc)
 858     EVT_UPDATE_UI(wxID_CLOSE_ALL, wxDocManager::OnUpdateDisableIfNoDoc)
 859     EVT_UPDATE_UI(wxID_REVERT, wxDocManager::OnUpdateDisableIfNoDoc)
 860     EVT_UPDATE_UI(wxID_NEW, wxDocManager::OnUpdateFileNew)
 861     EVT_UPDATE_UI(wxID_SAVE, wxDocManager::OnUpdateFileSave)
 862     EVT_UPDATE_UI(wxID_SAVEAS, wxDocManager::OnUpdateDisableIfNoDoc)
 863     EVT_UPDATE_UI(wxID_UNDO, wxDocManager::OnUpdateUndo)
 864     EVT_UPDATE_UI(wxID_REDO, wxDocManager::OnUpdateRedo)
 865
 866 #if wxUSE_PRINTING_ARCHITECTURE
 867     EVT_MENU(wxID_PRINT, wxDocManager::OnPrint)
 868     EVT_MENU(wxID_PREVIEW, wxDocManager::OnPreview)
 869
 870     EVT_UPDATE_UI(wxID_PRINT, wxDocManager::OnUpdateDisableIfNoDoc)
 871     EVT_UPDATE_UI(wxID_PREVIEW, wxDocManager::OnUpdateDisableIfNoDoc)
 872 #endif
 873 END_EVENT_TABLE()
 874
 875 wxDocManager* wxDocManager::sm_docManager = NULL;
 876
 877 wxDocManager::wxDocManager(long WXUNUSED(flags), bool initialize)
 878 {
 879     wxASSERT_MSG( !sm_docManager, "multiple wxDocManagers not allowed" );
 880
 881     sm_docManager = this;
 882
 883     m_defaultDocumentNameCounter = 1;
 884     m_currentView = NULL;
 885     m_maxDocsOpen = INT_MAX;
 886     m_fileHistory = NULL;
 887     if ( initialize )
 888         Initialize();
 889 }
 890
 891 wxDocManager::~wxDocManager()
 892 {
 893     Clear();
 894     delete m_fileHistory;
 895     sm_docManager = NULL;
 896 }
 897
 898 // closes the specified document
 899 bool wxDocManager::CloseDocument(wxDocument* doc, bool force)
 900 {
 901     if ( !doc->Close() && !force )
 902         return false;
 903
 904     // Implicitly deletes the document when
 905     // the last view is deleted
 906     doc->DeleteAllViews();
 907
 908     // Check we're really deleted
 909     if (m_docs.Member(doc))
 910         delete doc;
 911
 912     return true;
 913 }
 914
 915 bool wxDocManager::CloseDocuments(bool force)
 916 {
 917     wxList::compatibility_iterator node = m_docs.GetFirst();
 918     while (node)
 919     {
 920         wxDocument *doc = (wxDocument *)node->GetData();
 921         wxList::compatibility_iterator next = node->GetNext();
 922
 923         if (!CloseDocument(doc, force))
 924             return false;
 925
 926         // This assumes that documents are not connected in
 927         // any way, i.e. deleting one document does NOT
 928         // delete another.
 929         node = next;
 930     }
 931     return true;
 932 }
 933
 934 bool wxDocManager::Clear(bool force)
 935 {
 936     if (!CloseDocuments(force))
 937         return false;
 938
 939     m_currentView = NULL;
 940
 941     wxList::compatibility_iterator node = m_templates.GetFirst();
 942     while (node)
 943     {
 944         wxDocTemplate *templ = (wxDocTemplate*) node->GetData();
 945         wxList::compatibility_iterator next = node->GetNext();
 946         delete templ;
 947         node = next;
 948     }
 949     return true;
 950 }
 951
 952 bool wxDocManager::Initialize()
 953 {
 954     m_fileHistory = OnCreateFileHistory();
 955     return true;
 956 }
 957
 958 wxString wxDocManager::GetLastDirectory() const
 959 {
 960     // use the system-dependent default location for the document files if
 961     // we're being opened for the first time
 962     if ( m_lastDirectory.empty() )
 963     {
 964         wxDocManager * const self = const_cast<wxDocManager *>(this);
 965         self->m_lastDirectory = wxStandardPaths::Get().GetAppDocumentsDir();
 966     }
 967
 968     return m_lastDirectory;
 969 }
 970
 971 wxFileHistory *wxDocManager::OnCreateFileHistory()
 972 {
 973     return new wxFileHistory;
 974 }
 975
 976 void wxDocManager::OnFileClose(wxCommandEvent& WXUNUSED(event))
 977 {
 978     wxDocument *doc = GetCurrentDocument();
 979     if (!doc)
 980         return;
 981     if (doc->Close())
 982     {
 983         doc->DeleteAllViews();
 984         if (m_docs.Member(doc))
 985             delete doc;
 986     }
 987 }
 988
 989 void wxDocManager::OnFileCloseAll(wxCommandEvent& WXUNUSED(event))
 990 {
 991     CloseDocuments(false);
 992 }
 993
 994 void wxDocManager::OnFileNew(wxCommandEvent& WXUNUSED(event))
 995 {
 996     CreateNewDocument();
 997 }
 998
 999 void wxDocManager::OnFileOpen(wxCommandEvent& WXUNUSED(event))
1000 {
1001     if ( !CreateDocument("") )
1002     {
1003         OnOpenFileFailure();
1004     }
1005 }
1006
1007 void wxDocManager::OnFileRevert(wxCommandEvent& WXUNUSED(event))
1008 {
1009     wxDocument *doc = GetCurrentDocument();
1010     if (!doc)
1011         return;
1012     doc->Revert();
1013 }
1014
1015 void wxDocManager::OnFileSave(wxCommandEvent& WXUNUSED(event))
1016 {
1017     wxDocument *doc = GetCurrentDocument();
1018     if (!doc)
1019         return;
1020     doc->Save();
1021 }
1022
1023 void wxDocManager::OnFileSaveAs(wxCommandEvent& WXUNUSED(event))
1024 {
1025     wxDocument *doc = GetCurrentDocument();
1026     if (!doc)
1027         return;
1028     doc->SaveAs();
1029 }
1030
1031 void wxDocManager::OnPrint(wxCommandEvent& WXUNUSED(event))
1032 {
1033 #if wxUSE_PRINTING_ARCHITECTURE
1034     wxView *view = GetActiveView();
1035     if (!view)
1036         return;
1037
1038     wxPrintout *printout = view->OnCreatePrintout();
1039     if (printout)
1040     {
1041         wxPrinter printer;
1042         printer.Print(view->GetFrame(), printout, true);
1043
1044         delete printout;
1045     }
1046 #endif // wxUSE_PRINTING_ARCHITECTURE
1047 }
1048
1049 void wxDocManager::OnPreview(wxCommandEvent& WXUNUSED(event))
1050 {
1051 #if wxUSE_PRINTING_ARCHITECTURE
1052     wxView *view = GetActiveView();
1053     if (!view)
1054         return;
1055
1056     wxPrintout *printout = view->OnCreatePrintout();
1057     if (printout)
1058     {
1059         // Pass two printout objects: for preview, and possible printing.
1060         wxPrintPreviewBase *
1061             preview = new wxPrintPreview(printout, view->OnCreatePrintout());
1062         if ( !preview->Ok() )
1063         {
1064             delete preview;
1065             wxLogError(_("Print preview creation failed."));
1066             return;
1067         }
1068
1069         wxPreviewFrame *
1070             frame = new wxPreviewFrame(preview, wxTheApp->GetTopWindow(),
1071                                        _("Print Preview"));
1072         frame->Centre(wxBOTH);
1073         frame->Initialize();
1074         frame->Show(true);
1075     }
1076 #endif // wxUSE_PRINTING_ARCHITECTURE
1077 }
1078
1079 void wxDocManager::OnUndo(wxCommandEvent& event)
1080 {
1081     wxCommandProcessor * const cmdproc = GetCurrentCommandProcessor();
1082     if ( !cmdproc )
1083     {
1084         event.Skip();
1085         return;
1086     }
1087
1088     cmdproc->Undo();
1089 }
1090
1091 void wxDocManager::OnRedo(wxCommandEvent& event)
1092 {
1093     wxCommandProcessor * const cmdproc = GetCurrentCommandProcessor();
1094     if ( !cmdproc )
1095     {
1096         event.Skip();
1097         return;
1098     }
1099
1100     cmdproc->Redo();
1101 }
1102
1103 // Handlers for UI update commands
1104
1105 void wxDocManager::OnUpdateFileOpen(wxUpdateUIEvent& event)
1106 {
1107     // CreateDocument() (which is called from OnFileOpen) may succeed
1108     // only when there is at least a template:
1109     event.Enable( GetTemplates().GetCount()>0 );
1110 }
1111
1112 void wxDocManager::OnUpdateDisableIfNoDoc(wxUpdateUIEvent& event)
1113 {
1114     event.Enable( GetCurrentDocument() != NULL );
1115 }
1116
1117 void wxDocManager::OnUpdateFileNew(wxUpdateUIEvent& event)
1118 {
1119     // CreateDocument() (which is called from OnFileNew) may succeed
1120     // only when there is at least a template:
1121     event.Enable( GetTemplates().GetCount()>0 );
1122 }
1123
1124 void wxDocManager::OnUpdateFileSave(wxUpdateUIEvent& event)
1125 {
1126     wxDocument * const doc = GetCurrentDocument();
1127     event.Enable( doc && !doc->AlreadySaved() );
1128 }
1129
1130 void wxDocManager::OnUpdateUndo(wxUpdateUIEvent& event)
1131 {
1132     wxCommandProcessor * const cmdproc = GetCurrentCommandProcessor();
1133     if ( !cmdproc )
1134     {
1135         event.Enable(false);
1136         return;
1137     }
1138
1139     event.Enable(cmdproc->CanUndo());
1140     cmdproc->SetMenuStrings();
1141 }
1142
1143 void wxDocManager::OnUpdateRedo(wxUpdateUIEvent& event)
1144 {
1145     wxCommandProcessor * const cmdproc = GetCurrentCommandProcessor();
1146     if ( !cmdproc )
1147     {
1148         event.Enable(false);
1149         return;
1150     }
1151
1152     event.Enable(cmdproc->CanRedo());
1153     cmdproc->SetMenuStrings();
1154 }
1155
1156 wxView *wxDocManager::GetActiveView() const
1157 {
1158     wxView *view = GetCurrentView();
1159
1160     if ( !view && !m_docs.empty() )
1161     {
1162         // if we have exactly one document, consider its view to be the current
1163         // one
1164         //
1165         // VZ: I'm not exactly sure why is this needed but this is how this
1166         //     code used to behave before the bug #9518 was fixed and it seems
1167         //     safer to preserve the old logic
1168         wxList::compatibility_iterator node = m_docs.GetFirst();
1169         if ( !node->GetNext() )
1170         {
1171             wxDocument *doc = static_cast<wxDocument *>(node->GetData());
1172             view = doc->GetFirstView();
1173         }
1174         //else: we have more than one document
1175     }
1176
1177     return view;
1178 }
1179
1180 bool wxDocManager::TryBefore(wxEvent& event)
1181 {
1182     wxView * const view = GetActiveView();
1183     return view && view->ProcessEventHere(event);
1184 }
1185
1186 namespace
1187 {
1188
1189 // helper function: return only the visible templates
1190 wxDocTemplates GetVisibleTemplates(const wxList& allTemplates)
1191 {
1192     // select only the visible templates
1193     const size_t totalNumTemplates = allTemplates.GetCount();
1194     wxDocTemplates templates;
1195     if ( totalNumTemplates )
1196     {
1197         templates.reserve(totalNumTemplates);
1198
1199         for ( wxList::const_iterator i = allTemplates.begin(),
1200                                    end = allTemplates.end();
1201               i != end;
1202               ++i )
1203         {
1204             wxDocTemplate * const temp = (wxDocTemplate *)*i;
1205             if ( temp->IsVisible() )
1206                 templates.push_back(temp);
1207         }
1208     }
1209
1210     return templates;
1211 }
1212
1213 } // anonymous namespace
1214
1215 wxDocument *wxDocManager::CreateDocument(const wxString& pathOrig, long flags)
1216 {
1217     // this ought to be const but SelectDocumentType/Path() are not
1218     // const-correct and can't be changed as, being virtual, this risks
1219     // breaking user code overriding them
1220     wxDocTemplates templates(GetVisibleTemplates(m_templates));
1221     const size_t numTemplates = templates.size();
1222     if ( !numTemplates )
1223     {
1224         // no templates can be used, can't create document
1225         return NULL;
1226     }
1227
1228
1229     // normally user should select the template to use but wxDOC_SILENT flag we
1230     // choose one ourselves
1231     wxString path = pathOrig;   // may be modified below
1232     wxDocTemplate *temp;
1233     if ( flags & wxDOC_SILENT )
1234     {
1235         wxASSERT_MSG( !path.empty(),
1236                       "using empty path with wxDOC_SILENT doesn't make sense" );
1237
1238         temp = FindTemplateForPath(path);
1239         if ( !temp )
1240         {
1241             wxLogWarning(_("The format of file '%s' couldn't be determined."),
1242                          path);
1243         }
1244     }
1245     else // not silent, ask the user
1246     {
1247         // for the new file we need just the template, for an existing one we
1248         // need the template and the path, unless it's already specified
1249         if ( (flags & wxDOC_NEW) || !path.empty() )
1250             temp = SelectDocumentType(&templates[0], numTemplates);
1251         else
1252             temp = SelectDocumentPath(&templates[0], numTemplates, path, flags);
1253     }
1254
1255     if ( !temp )
1256         return NULL;
1257
1258     // check whether the document with this path is already opened
1259     if ( !path.empty() )
1260     {
1261         const wxFileName fn(path);
1262         for ( wxList::const_iterator i = m_docs.begin(); i != m_docs.end(); ++i )
1263         {
1264             wxDocument * const doc = (wxDocument*)*i;
1265
1266             if ( fn == doc->GetFilename() )
1267             {
1268                 // file already open, just activate it and return
1269                 if ( doc->GetFirstView() )
1270                 {
1271                     ActivateView(doc->GetFirstView());
1272                     if ( doc->GetDocumentWindow() )
1273                         doc->GetDocumentWindow()->SetFocus();
1274                     return doc;
1275                 }
1276             }
1277         }
1278     }
1279
1280
1281     // no, we need to create a new document
1282
1283
1284     // if we've reached the max number of docs, close the first one.
1285     if ( (int)GetDocuments().GetCount() >= m_maxDocsOpen )
1286     {
1287         if ( !CloseDocument((wxDocument *)GetDocuments().GetFirst()->GetData()) )
1288         {
1289             // can't open the new document if closing the old one failed
1290             return NULL;
1291         }
1292     }
1293
1294
1295     // do create and initialize the new document finally
1296     wxDocument * const docNew = temp->CreateDocument(path, flags);
1297     if ( !docNew )
1298         return NULL;
1299
1300     docNew->SetDocumentName(temp->GetDocumentName());
1301     docNew->SetDocumentTemplate(temp);
1302
1303     // call the appropriate function depending on whether we're creating a new
1304     // file or opening an existing one
1305     if ( !(flags & wxDOC_NEW ? docNew->OnNewDocument()
1306                              : docNew->OnOpenDocument(path)) )
1307     {
1308          // Document is implicitly deleted by DeleteAllViews
1309          docNew->DeleteAllViews();
1310          return NULL;
1311     }
1312
1313     // add the successfully opened file to MRU, but only if we're going to be
1314     // able to reopen it successfully later which requires the template for
1315     // this document to be retrievable from the file extension
1316     if ( !(flags & wxDOC_NEW) && temp->FileMatchesTemplate(path) )
1317         AddFileToHistory(path);
1318
1319     return docNew;
1320 }
1321
1322 wxView *wxDocManager::CreateView(wxDocument *doc, long flags)
1323 {
1324     wxDocTemplates templates(GetVisibleTemplates(m_templates));
1325     const size_t numTemplates = templates.size();
1326
1327     if ( numTemplates == 0 )
1328         return NULL;
1329
1330     wxDocTemplate * const
1331     temp = numTemplates == 1 ? templates[0]
1332                              : SelectViewType(&templates[0], numTemplates);
1333
1334     if ( !temp )
1335         return NULL;
1336
1337     wxView *view = temp->CreateView(doc, flags);
1338     if ( view )
1339         view->SetViewName(temp->GetViewName());
1340     return view;
1341 }
1342
1343 // Not yet implemented
1344 void
1345 wxDocManager::DeleteTemplate(wxDocTemplate *WXUNUSED(temp), long WXUNUSED(flags))
1346 {
1347 }
1348
1349 // Not yet implemented
1350 bool wxDocManager::FlushDoc(wxDocument *WXUNUSED(doc))
1351 {
1352     return false;
1353 }
1354
1355 wxDocument *wxDocManager::GetCurrentDocument() const
1356 {
1357     wxView * const view = GetActiveView();
1358     return view ? view->GetDocument() : NULL;
1359 }
1360
1361 wxCommandProcessor *wxDocManager::GetCurrentCommandProcessor() const
1362 {
1363     wxDocument * const doc = GetCurrentDocument();
1364     return doc ? doc->GetCommandProcessor() : NULL;
1365 }
1366
1367 // Make a default name for a new document
1368 #if WXWIN_COMPATIBILITY_2_8
1369 bool wxDocManager::MakeDefaultName(wxString& WXUNUSED(name))
1370 {
1371     // we consider that this function can only be overridden by the user code,
1372     // not called by it as it only makes sense to call it internally, so we
1373     // don't bother to return anything from here
1374     return false;
1375 }
1376 #endif // WXWIN_COMPATIBILITY_2_8
1377
1378 wxString wxDocManager::MakeNewDocumentName()
1379 {
1380     wxString name;
1381
1382 #if WXWIN_COMPATIBILITY_2_8
1383     if ( !MakeDefaultName(name) )
1384 #endif // WXWIN_COMPATIBILITY_2_8
1385     {
1386         name.Printf(_("unnamed%d"), m_defaultDocumentNameCounter);
1387         m_defaultDocumentNameCounter++;
1388     }
1389
1390     return name;
1391 }
1392
1393 // Make a frame title (override this to do something different)
1394 // If docName is empty, a document is not currently active.
1395 wxString wxDocManager::MakeFrameTitle(wxDocument* doc)
1396 {
1397     wxString appName = wxTheApp->GetAppDisplayName();
1398     wxString title;
1399     if (!doc)
1400         title = appName;
1401     else
1402     {
1403         wxString docName = doc->GetUserReadableName();
1404         title = docName + wxString(_(" - ")) + appName;
1405     }
1406     return title;
1407 }
1408
1409
1410 // Not yet implemented
1411 wxDocTemplate *wxDocManager::MatchTemplate(const wxString& WXUNUSED(path))
1412 {
1413     return NULL;
1414 }
1415
1416 // File history management
1417 void wxDocManager::AddFileToHistory(const wxString& file)
1418 {
1419     if (m_fileHistory)
1420         m_fileHistory->AddFileToHistory(file);
1421 }
1422
1423 void wxDocManager::RemoveFileFromHistory(size_t i)
1424 {
1425     if (m_fileHistory)
1426         m_fileHistory->RemoveFileFromHistory(i);
1427 }
1428
1429 wxString wxDocManager::GetHistoryFile(size_t i) const
1430 {
1431     wxString histFile;
1432
1433     if (m_fileHistory)
1434         histFile = m_fileHistory->GetHistoryFile(i);
1435
1436     return histFile;
1437 }
1438
1439 void wxDocManager::FileHistoryUseMenu(wxMenu *menu)
1440 {
1441     if (m_fileHistory)
1442         m_fileHistory->UseMenu(menu);
1443 }
1444
1445 void wxDocManager::FileHistoryRemoveMenu(wxMenu *menu)
1446 {
1447     if (m_fileHistory)
1448         m_fileHistory->RemoveMenu(menu);
1449 }
1450
1451 #if wxUSE_CONFIG
1452 void wxDocManager::FileHistoryLoad(const wxConfigBase& config)
1453 {
1454     if (m_fileHistory)
1455         m_fileHistory->Load(config);
1456 }
1457
1458 void wxDocManager::FileHistorySave(wxConfigBase& config)
1459 {
1460     if (m_fileHistory)
1461         m_fileHistory->Save(config);
1462 }
1463 #endif
1464
1465 void wxDocManager::FileHistoryAddFilesToMenu(wxMenu* menu)
1466 {
1467     if (m_fileHistory)
1468         m_fileHistory->AddFilesToMenu(menu);
1469 }
1470
1471 void wxDocManager::FileHistoryAddFilesToMenu()
1472 {
1473     if (m_fileHistory)
1474         m_fileHistory->AddFilesToMenu();
1475 }
1476
1477 size_t wxDocManager::GetHistoryFilesCount() const
1478 {
1479     return m_fileHistory ? m_fileHistory->GetCount() : 0;
1480 }
1481
1482
1483 // Find out the document template via matching in the document file format
1484 // against that of the template
1485 wxDocTemplate *wxDocManager::FindTemplateForPath(const wxString& path)
1486 {
1487     wxDocTemplate *theTemplate = NULL;
1488
1489     // Find the template which this extension corresponds to
1490     for (size_t i = 0; i < m_templates.GetCount(); i++)
1491     {
1492         wxDocTemplate *temp = (wxDocTemplate *)m_templates.Item(i)->GetData();
1493         if ( temp->FileMatchesTemplate(path) )
1494         {
1495             theTemplate = temp;
1496             break;
1497         }
1498     }
1499     return theTemplate;
1500 }
1501
1502 // Prompts user to open a file, using file specs in templates.
1503 // Must extend the file selector dialog or implement own; OR
1504 // match the extension to the template extension.
1505
1506 wxDocTemplate *wxDocManager::SelectDocumentPath(wxDocTemplate **templates,
1507                                                 int noTemplates,
1508                                                 wxString& path,
1509                                                 long WXUNUSED(flags),
1510                                                 bool WXUNUSED(save))
1511 {
1512 #ifdef wxHAS_MULTIPLE_FILEDLG_FILTERS
1513     wxString descrBuf;
1514
1515     for (int i = 0; i < noTemplates; i++)
1516     {
1517         if (templates[i]->IsVisible())
1518         {
1519             // add a '|' to separate this filter from the previous one
1520             if ( !descrBuf.empty() )
1521                 descrBuf << wxT('|');
1522
1523             descrBuf << templates[i]->GetDescription()
1524                 << wxT(" (") << templates[i]->GetFileFilter() << wxT(") |")
1525                 << templates[i]->GetFileFilter();
1526         }
1527     }
1528 #else
1529     wxString descrBuf = wxT("*.*");
1530     wxUnusedVar(noTemplates);
1531 #endif
1532
1533     int FilterIndex = -1;
1534
1535     wxWindow* parent = wxFindSuitableParent();
1536
1537     wxString pathTmp = wxFileSelectorEx(_("Open File"),
1538                                         GetLastDirectory(),
1539                                         wxEmptyString,
1540                                         &FilterIndex,
1541                                         descrBuf,
1542                                         0,
1543                                         parent);
1544
1545     wxDocTemplate *theTemplate = NULL;
1546     if (!pathTmp.empty())
1547     {
1548         if (!wxFileExists(pathTmp))
1549         {
1550             wxString msgTitle;
1551             if (!wxTheApp->GetAppDisplayName().empty())
1552                 msgTitle = wxTheApp->GetAppDisplayName();
1553             else
1554                 msgTitle = wxString(_("File error"));
1555
1556             wxMessageBox(_("Sorry, could not open this file."),
1557                          msgTitle,
1558                          wxOK | wxICON_EXCLAMATION | wxCENTRE,
1559                          parent);
1560
1561             path = wxEmptyString;
1562             return NULL;
1563         }
1564
1565         SetLastDirectory(wxPathOnly(pathTmp));
1566
1567         path = pathTmp;
1568
1569         // first choose the template using the extension, if this fails (i.e.
1570         // wxFileSelectorEx() didn't fill it), then use the path
1571         if ( FilterIndex != -1 )
1572             theTemplate = templates[FilterIndex];
1573         if ( !theTemplate )
1574             theTemplate = FindTemplateForPath(path);
1575         if ( !theTemplate )
1576         {
1577             // Since we do not add files with non-default extensions to the
1578             // file history this can only happen if the application changes the
1579             // allowed templates in runtime.
1580             wxMessageBox(_("Sorry, the format for this file is unknown."),
1581                          _("Open File"),
1582                          wxOK | wxICON_EXCLAMATION | wxCENTRE,
1583                          parent);
1584         }
1585     }
1586     else
1587     {
1588         path.clear();
1589     }
1590
1591     return theTemplate;
1592 }
1593
1594 wxDocTemplate *wxDocManager::SelectDocumentType(wxDocTemplate **templates,
1595                                                 int noTemplates, bool sort)
1596 {
1597     wxArrayString strings;
1598     wxScopedArray<wxDocTemplate *> data(new wxDocTemplate *[noTemplates]);
1599     int i;
1600     int n = 0;
1601
1602     for (i = 0; i < noTemplates; i++)
1603     {
1604         if (templates[i]->IsVisible())
1605         {
1606             int j;
1607             bool want = true;
1608             for (j = 0; j < n; j++)
1609             {
1610                 //filter out NOT unique documents + view combinations
1611                 if ( templates[i]->m_docTypeName == data[j]->m_docTypeName &&
1612                      templates[i]->m_viewTypeName == data[j]->m_viewTypeName
1613                    )
1614                     want = false;
1615             }
1616
1617             if ( want )
1618             {
1619                 strings.Add(templates[i]->m_description);
1620
1621                 data[n] = templates[i];
1622                 n ++;
1623             }
1624         }
1625     }  // for
1626
1627     if (sort)
1628     {
1629         strings.Sort(); // ascending sort
1630         // Yes, this will be slow, but template lists
1631         // are typically short.
1632         int j;
1633         n = strings.Count();
1634         for (i = 0; i < n; i++)
1635         {
1636             for (j = 0; j < noTemplates; j++)
1637             {
1638                 if (strings[i] == templates[j]->m_description)
1639                     data[i] = templates[j];
1640             }
1641         }
1642     }
1643
1644     wxDocTemplate *theTemplate;
1645
1646     switch ( n )
1647     {
1648         case 0:
1649             // no visible templates, hence nothing to choose from
1650             theTemplate = NULL;
1651             break;
1652
1653         case 1:
1654             // don't propose the user to choose if he has no choice
1655             theTemplate = data[0];
1656             break;
1657
1658         default:
1659             // propose the user to choose one of several
1660             theTemplate = (wxDocTemplate *)wxGetSingleChoiceData
1661                           (
1662                             _("Select a document template"),
1663                             _("Templates"),
1664                             strings,
1665                             (void **)data.get(),
1666                             wxFindSuitableParent()
1667                           );
1668     }
1669
1670     return theTemplate;
1671 }
1672
1673 wxDocTemplate *wxDocManager::SelectViewType(wxDocTemplate **templates,
1674                                             int noTemplates, bool sort)
1675 {
1676     wxArrayString strings;
1677     wxScopedArray<wxDocTemplate *> data(new wxDocTemplate *[noTemplates]);
1678     int i;
1679     int n = 0;
1680
1681     for (i = 0; i < noTemplates; i++)
1682     {
1683         wxDocTemplate *templ = templates[i];
1684         if ( templ->IsVisible() && !templ->GetViewName().empty() )
1685         {
1686             int j;
1687             bool want = true;
1688             for (j = 0; j < n; j++)
1689             {
1690                 //filter out NOT unique views
1691                 if ( templates[i]->m_viewTypeName == data[j]->m_viewTypeName )
1692                     want = false;
1693             }
1694
1695             if ( want )
1696             {
1697                 strings.Add(templ->m_viewTypeName);
1698                 data[n] = templ;
1699                 n ++;
1700             }
1701         }
1702     }
1703
1704     if (sort)
1705     {
1706         strings.Sort(); // ascending sort
1707         // Yes, this will be slow, but template lists
1708         // are typically short.
1709         int j;
1710         n = strings.Count();
1711         for (i = 0; i < n; i++)
1712         {
1713             for (j = 0; j < noTemplates; j++)
1714             {
1715                 if (strings[i] == templates[j]->m_viewTypeName)
1716                     data[i] = templates[j];
1717             }
1718         }
1719     }
1720
1721     wxDocTemplate *theTemplate;
1722
1723     // the same logic as above
1724     switch ( n )
1725     {
1726         case 0:
1727             theTemplate = NULL;
1728             break;
1729
1730         case 1:
1731             theTemplate = data[0];
1732             break;
1733
1734         default:
1735             theTemplate = (wxDocTemplate *)wxGetSingleChoiceData
1736                           (
1737                             _("Select a document view"),
1738                             _("Views"),
1739                             strings,
1740                             (void **)data.get(),
1741                             wxFindSuitableParent()
1742                           );
1743
1744     }
1745
1746     return theTemplate;
1747 }
1748
1749 void wxDocManager::AssociateTemplate(wxDocTemplate *temp)
1750 {
1751     if (!m_templates.Member(temp))
1752         m_templates.Append(temp);
1753 }
1754
1755 void wxDocManager::DisassociateTemplate(wxDocTemplate *temp)
1756 {
1757     m_templates.DeleteObject(temp);
1758 }
1759
1760 // Add and remove a document from the manager's list
1761 void wxDocManager::AddDocument(wxDocument *doc)
1762 {
1763     if (!m_docs.Member(doc))
1764         m_docs.Append(doc);
1765 }
1766
1767 void wxDocManager::RemoveDocument(wxDocument *doc)
1768 {
1769     m_docs.DeleteObject(doc);
1770 }
1771
1772 // Views or windows should inform the document manager
1773 // when a view is going in or out of focus
1774 void wxDocManager::ActivateView(wxView *view, bool activate)
1775 {
1776     if ( activate )
1777     {
1778         m_currentView = view;
1779     }
1780     else // deactivate
1781     {
1782         if ( m_currentView == view )
1783         {
1784             // don't keep stale pointer
1785             m_currentView = NULL;
1786         }
1787     }
1788 }
1789
1790 // ----------------------------------------------------------------------------
1791 // wxDocChildFrameAnyBase
1792 // ----------------------------------------------------------------------------
1793
1794 bool wxDocChildFrameAnyBase::CloseView(wxCloseEvent& event)
1795 {
1796     if ( m_childView )
1797     {
1798         if ( event.CanVeto() && !m_childView->Close(false) )
1799         {
1800             event.Veto();
1801             return false;
1802         }
1803
1804         m_childView->Activate(false);
1805         delete m_childView;
1806         m_childView = NULL;
1807     }
1808
1809     m_childDocument = NULL;
1810
1811     return true;
1812 }
1813
1814 // ----------------------------------------------------------------------------
1815 // Default parent frame
1816 // ----------------------------------------------------------------------------
1817
1818 BEGIN_EVENT_TABLE(wxDocParentFrame, wxFrame)
1819     EVT_MENU(wxID_EXIT, wxDocParentFrame::OnExit)
1820     EVT_MENU_RANGE(wxID_FILE1, wxID_FILE9, wxDocParentFrame::OnMRUFile)
1821     EVT_CLOSE(wxDocParentFrame::OnCloseWindow)
1822 END_EVENT_TABLE()
1823
1824 wxDocParentFrame::wxDocParentFrame()
1825 {
1826     m_docManager = NULL;
1827 }
1828
1829 wxDocParentFrame::wxDocParentFrame(wxDocManager *manager,
1830                                    wxFrame *frame,
1831                                    wxWindowID id,
1832                                    const wxString& title,
1833                                    const wxPoint& pos,
1834                                    const wxSize& size,
1835                                    long style,
1836                                    const wxString& name)
1837                 : wxFrame(frame, id, title, pos, size, style, name)
1838 {
1839     m_docManager = manager;
1840 }
1841
1842 bool wxDocParentFrame::Create(wxDocManager *manager,
1843                               wxFrame *frame,
1844                               wxWindowID id,
1845                               const wxString& title,
1846                               const wxPoint& pos,
1847                               const wxSize& size,
1848                               long style,
1849                               const wxString& name)
1850 {
1851     m_docManager = manager;
1852     return base_type::Create(frame, id, title, pos, size, style, name);
1853 }
1854
1855 void wxDocParentFrame::OnExit(wxCommandEvent& WXUNUSED(event))
1856 {
1857     Close();
1858 }
1859
1860 void wxDocParentFrame::OnMRUFile(wxCommandEvent& event)
1861 {
1862     int n = event.GetId() - wxID_FILE1;  // the index in MRU list
1863     wxString filename(m_docManager->GetHistoryFile(n));
1864     if ( filename.empty() )
1865         return;
1866
1867     wxString errMsg; // must contain exactly one "%s" if non-empty
1868     if ( wxFile::Exists(filename) )
1869     {
1870         // try to open it
1871         if ( m_docManager->CreateDocument(filename, wxDOC_SILENT) )
1872             return;
1873
1874         errMsg = _("The file '%s' couldn't be opened.");
1875     }
1876     else // file doesn't exist
1877     {
1878         errMsg = _("The file '%s' doesn't exist and couldn't be opened.");
1879     }
1880
1881
1882     wxASSERT_MSG( !errMsg.empty(), "should have an error message" );
1883
1884     // remove the file which we can't open from the MRU list
1885     m_docManager->RemoveFileFromHistory(n);
1886
1887     // and tell the user about it
1888     wxLogError(errMsg + '\n' +
1889                _("It has been removed from the most recently used files list."),
1890                filename);
1891 }
1892
1893 // Extend event processing to search the view's event table
1894 bool wxDocParentFrame::TryBefore(wxEvent& event)
1895 {
1896     if ( m_docManager && m_docManager->ProcessEventHere(event) )
1897         return true;
1898
1899     return wxFrame::TryBefore(event);
1900 }
1901
1902 // Define the behaviour for the frame closing
1903 // - must delete all frames except for the main one.
1904 void wxDocParentFrame::OnCloseWindow(wxCloseEvent& event)
1905 {
1906     if (m_docManager->Clear(!event.CanVeto()))
1907     {
1908         Destroy();
1909     }
1910     else
1911         event.Veto();
1912 }
1913
1914 #if wxUSE_PRINTING_ARCHITECTURE
1915
1916 wxDocPrintout::wxDocPrintout(wxView *view, const wxString& title)
1917              : wxPrintout(title)
1918 {
1919     m_printoutView = view;
1920 }
1921
1922 bool wxDocPrintout::OnPrintPage(int WXUNUSED(page))
1923 {
1924     wxDC *dc = GetDC();
1925
1926     // Get the logical pixels per inch of screen and printer
1927     int ppiScreenX, ppiScreenY;
1928     GetPPIScreen(&ppiScreenX, &ppiScreenY);
1929     wxUnusedVar(ppiScreenY);
1930     int ppiPrinterX, ppiPrinterY;
1931     GetPPIPrinter(&ppiPrinterX, &ppiPrinterY);
1932     wxUnusedVar(ppiPrinterY);
1933
1934     // This scales the DC so that the printout roughly represents the
1935     // the screen scaling. The text point size _should_ be the right size
1936     // but in fact is too small for some reason. This is a detail that will
1937     // need to be addressed at some point but can be fudged for the
1938     // moment.
1939     float scale = (float)((float)ppiPrinterX/(float)ppiScreenX);
1940
1941     // Now we have to check in case our real page size is reduced
1942     // (e.g. because we're drawing to a print preview memory DC)
1943     int pageWidth, pageHeight;
1944     int w, h;
1945     dc->GetSize(&w, &h);
1946     GetPageSizePixels(&pageWidth, &pageHeight);
1947     wxUnusedVar(pageHeight);
1948
1949     // If printer pageWidth == current DC width, then this doesn't
1950     // change. But w might be the preview bitmap width, so scale down.
1951     float overallScale = scale * (float)(w/(float)pageWidth);
1952     dc->SetUserScale(overallScale, overallScale);
1953
1954     if (m_printoutView)
1955     {
1956         m_printoutView->OnDraw(dc);
1957     }
1958     return true;
1959 }
1960
1961 bool wxDocPrintout::HasPage(int pageNum)
1962 {
1963     return (pageNum == 1);
1964 }
1965
1966 bool wxDocPrintout::OnBeginDocument(int startPage, int endPage)
1967 {
1968     if (!wxPrintout::OnBeginDocument(startPage, endPage))
1969         return false;
1970
1971     return true;
1972 }
1973
1974 void wxDocPrintout::GetPageInfo(int *minPage, int *maxPage,
1975                                 int *selPageFrom, int *selPageTo)
1976 {
1977     *minPage = 1;
1978     *maxPage = 1;
1979     *selPageFrom = 1;
1980     *selPageTo = 1;
1981 }
1982
1983 #endif // wxUSE_PRINTING_ARCHITECTURE
1984
1985 // ----------------------------------------------------------------------------
1986 // File history (a.k.a. MRU, most recently used, files list)
1987 // ----------------------------------------------------------------------------
1988
1989 wxFileHistory::wxFileHistory(size_t maxFiles, wxWindowID idBase)
1990 {
1991     m_fileMaxFiles = maxFiles;
1992     m_idBase = idBase;
1993 }
1994
1995 void wxFileHistory::AddFileToHistory(const wxString& file)
1996 {
1997     // check if we don't already have this file
1998     const wxFileName fnNew(file);
1999     size_t i,
2000            numFiles = m_fileHistory.size();
2001     for ( i = 0; i < numFiles; i++ )
2002     {
2003         if ( fnNew == m_fileHistory[i] )
2004         {
2005             // we do have it, move it to the top of the history
2006             RemoveFileFromHistory(i);
2007             numFiles--;
2008             break;
2009         }
2010     }
2011
2012     // if we already have a full history, delete the one at the end
2013     if ( numFiles == m_fileMaxFiles )
2014     {
2015         RemoveFileFromHistory(--numFiles);
2016     }
2017
2018     // add a new menu item to all file menus (they will be updated below)
2019     for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2020         node;
2021         node = node->GetNext() )
2022     {
2023         wxMenu * const menu = (wxMenu *)node->GetData();
2024
2025         if ( !numFiles && menu->GetMenuItemCount() )
2026             menu->AppendSeparator();
2027
2028         // label doesn't matter, it will be set below anyhow, but it can't
2029         // be empty (this is supposed to indicate a stock item)
2030         menu->Append(m_idBase + numFiles, " ");
2031     }
2032
2033     // insert the new file in the beginning of the file history
2034     m_fileHistory.insert(m_fileHistory.begin(), file);
2035     numFiles++;
2036
2037     // update the labels in all menus
2038     for ( i = 0; i < numFiles; i++ )
2039     {
2040         // if in same directory just show the filename; otherwise the full path
2041         const wxFileName fnOld(m_fileHistory[i]);
2042
2043         wxString pathInMenu;
2044         if ( fnOld.GetPath() == fnNew.GetPath() )
2045         {
2046             pathInMenu = fnOld.GetFullName();
2047         }
2048         else // file in different directory
2049         {
2050             // absolute path; could also set relative path
2051             pathInMenu = m_fileHistory[i];
2052         }
2053
2054         for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2055               node;
2056               node = node->GetNext() )
2057         {
2058             wxMenu * const menu = (wxMenu *)node->GetData();
2059
2060             menu->SetLabel(m_idBase + i, GetMRUEntryLabel(i, pathInMenu));
2061         }
2062     }
2063 }
2064
2065 void wxFileHistory::RemoveFileFromHistory(size_t i)
2066 {
2067     size_t numFiles = m_fileHistory.size();
2068     wxCHECK_RET( i < numFiles,
2069                  wxT("invalid index in wxFileHistory::RemoveFileFromHistory") );
2070
2071     // delete the element from the array
2072     m_fileHistory.RemoveAt(i);
2073     numFiles--;
2074
2075     for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2076           node;
2077           node = node->GetNext() )
2078     {
2079         wxMenu * const menu = (wxMenu *) node->GetData();
2080
2081         // shift filenames up
2082         for ( size_t j = i; j < numFiles; j++ )
2083         {
2084             menu->SetLabel(m_idBase + j, GetMRUEntryLabel(j, m_fileHistory[j]));
2085         }
2086
2087         // delete the last menu item which is unused now
2088         const wxWindowID lastItemId = m_idBase + numFiles;
2089         if ( menu->FindItem(lastItemId) )
2090             menu->Delete(lastItemId);
2091
2092         // delete the last separator too if no more files are left
2093         if ( m_fileHistory.empty() )
2094         {
2095             const wxMenuItemList::compatibility_iterator
2096                 nodeLast = menu->GetMenuItems().GetLast();
2097             if ( nodeLast )
2098             {
2099                 wxMenuItem * const lastMenuItem = nodeLast->GetData();
2100                 if ( lastMenuItem->IsSeparator() )
2101                     menu->Delete(lastMenuItem);
2102             }
2103             //else: menu is empty somehow
2104         }
2105     }
2106 }
2107
2108 void wxFileHistory::UseMenu(wxMenu *menu)
2109 {
2110     if ( !m_fileMenus.Member(menu) )
2111         m_fileMenus.Append(menu);
2112 }
2113
2114 void wxFileHistory::RemoveMenu(wxMenu *menu)
2115 {
2116     m_fileMenus.DeleteObject(menu);
2117 }
2118
2119 #if wxUSE_CONFIG
2120 void wxFileHistory::Load(const wxConfigBase& config)
2121 {
2122     m_fileHistory.Clear();
2123
2124     wxString buf;
2125     buf.Printf(wxT("file%d"), 1);
2126
2127     wxString historyFile;
2128     while ((m_fileHistory.GetCount() < m_fileMaxFiles) &&
2129            config.Read(buf, &historyFile) && !historyFile.empty())
2130     {
2131         m_fileHistory.Add(historyFile);
2132
2133         buf.Printf(wxT("file%d"), (int)m_fileHistory.GetCount()+1);
2134         historyFile = wxEmptyString;
2135     }
2136
2137     AddFilesToMenu();
2138 }
2139
2140 void wxFileHistory::Save(wxConfigBase& config)
2141 {
2142     size_t i;
2143     for (i = 0; i < m_fileMaxFiles; i++)
2144     {
2145         wxString buf;
2146         buf.Printf(wxT("file%d"), (int)i+1);
2147         if (i < m_fileHistory.GetCount())
2148             config.Write(buf, wxString(m_fileHistory[i]));
2149         else
2150             config.Write(buf, wxEmptyString);
2151     }
2152 }
2153 #endif // wxUSE_CONFIG
2154
2155 void wxFileHistory::AddFilesToMenu()
2156 {
2157     if ( m_fileHistory.empty() )
2158         return;
2159
2160     for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2161           node;
2162           node = node->GetNext() )
2163     {
2164         AddFilesToMenu((wxMenu *) node->GetData());
2165     }
2166 }
2167
2168 void wxFileHistory::AddFilesToMenu(wxMenu* menu)
2169 {
2170     if ( m_fileHistory.empty() )
2171         return;
2172
2173     if ( menu->GetMenuItemCount() )
2174         menu->AppendSeparator();
2175
2176     for ( size_t i = 0; i < m_fileHistory.GetCount(); i++ )
2177     {
2178         menu->Append(m_idBase + i, GetMRUEntryLabel(i, m_fileHistory[i]));
2179     }
2180 }
2181
2182 // ----------------------------------------------------------------------------
2183 // Permits compatibility with existing file formats and functions that
2184 // manipulate files directly
2185 // ----------------------------------------------------------------------------
2186
2187 #if wxUSE_STD_IOSTREAM
2188
2189 bool wxTransferFileToStream(const wxString& filename, wxSTD ostream& stream)
2190 {
2191     wxFFile file(filename, _T("rb"));
2192     if ( !file.IsOpened() )
2193         return false;
2194
2195     char buf[4096];
2196
2197     size_t nRead;
2198     do
2199     {
2200         nRead = file.Read(buf, WXSIZEOF(buf));
2201         if ( file.Error() )
2202             return false;
2203
2204         stream.write(buf, nRead);
2205         if ( !stream )
2206             return false;
2207     }
2208     while ( !file.Eof() );
2209
2210     return true;
2211 }
2212
2213 bool wxTransferStreamToFile(wxSTD istream& stream, const wxString& filename)
2214 {
2215     wxFFile file(filename, _T("wb"));
2216     if ( !file.IsOpened() )
2217         return false;
2218
2219     char buf[4096];
2220     do
2221     {
2222         stream.read(buf, WXSIZEOF(buf));
2223         if ( !stream.bad() ) // fail may be set on EOF, don't use operator!()
2224         {
2225             if ( !file.Write(buf, stream.gcount()) )
2226                 return false;
2227         }
2228     }
2229     while ( !stream.eof() );
2230
2231     return true;
2232 }
2233
2234 #else // !wxUSE_STD_IOSTREAM
2235
2236 bool wxTransferFileToStream(const wxString& filename, wxOutputStream& stream)
2237 {
2238     wxFFile file(filename, _T("rb"));
2239     if ( !file.IsOpened() )
2240         return false;
2241
2242     char buf[4096];
2243
2244     size_t nRead;
2245     do
2246     {
2247         nRead = file.Read(buf, WXSIZEOF(buf));
2248         if ( file.Error() )
2249             return false;
2250
2251         stream.Write(buf, nRead);
2252         if ( !stream )
2253             return false;
2254     }
2255     while ( !file.Eof() );
2256
2257     return true;
2258 }
2259
2260 bool wxTransferStreamToFile(wxInputStream& stream, const wxString& filename)
2261 {
2262     wxFFile file(filename, _T("wb"));
2263     if ( !file.IsOpened() )
2264         return false;
2265
2266     char buf[4096];
2267     for ( ;; )
2268     {
2269         stream.Read(buf, WXSIZEOF(buf));
2270
2271         const size_t nRead = stream.LastRead();
2272         if ( !nRead )
2273         {
2274             if ( stream.Eof() )
2275                 break;
2276
2277             return false;
2278         }
2279
2280         if ( !file.Write(buf, nRead) )
2281             return false;
2282     }
2283
2284     return true;
2285 }
2286
2287 #endif // wxUSE_STD_IOSTREAM/!wxUSE_STD_IOSTREAM
2288
2289 #endif // wxUSE_DOC_VIEW_ARCHITECTURE