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/ptr_scpd.h"
  62
  63 #if wxUSE_STD_IOSTREAM
  64     #include "wx/ioswrap.h"
  65     #include "wx/beforestd.h"
  66     #if wxUSE_IOSTREAMH
  67         #include <fstream.h>
  68     #else
  69         #include <fstream>
  70     #endif
  71     #include "wx/afterstd.h"
  72 #else
  73     #include "wx/wfstream.h"
  74 #endif
  75
  76 typedef wxVector<wxDocTemplate *> wxDocTemplates;
  77
  78 // ----------------------------------------------------------------------------
  79 // wxWidgets macros
  80 // ----------------------------------------------------------------------------
  81
  82 IMPLEMENT_ABSTRACT_CLASS(wxDocument, wxEvtHandler)
  83 IMPLEMENT_ABSTRACT_CLASS(wxView, wxEvtHandler)
  84 IMPLEMENT_ABSTRACT_CLASS(wxDocTemplate, wxObject)
  85 IMPLEMENT_DYNAMIC_CLASS(wxDocManager, wxEvtHandler)
  86 IMPLEMENT_CLASS(wxDocChildFrame, wxFrame)
  87 IMPLEMENT_CLASS(wxDocParentFrame, wxFrame)
  88
  89 #if wxUSE_PRINTING_ARCHITECTURE
  90     IMPLEMENT_DYNAMIC_CLASS(wxDocPrintout, wxPrintout)
  91 #endif
  92
  93 IMPLEMENT_DYNAMIC_CLASS(wxFileHistory, wxObject)
  94
  95 // ============================================================================
  96 // implementation
  97 // ============================================================================
  98
  99 // ----------------------------------------------------------------------------
 100 // private helpers
 101 // ----------------------------------------------------------------------------
 102
 103 namespace
 104 {
 105
 106 wxWindow *wxFindSuitableParent()
 107 {
 108     wxWindow * const win = wxGetTopLevelParent(wxWindow::FindFocus());
 109
 110     return win ? win : wxTheApp->GetTopWindow();
 111 }
 112
 113 wxString FindExtension(const wxString& path)
 114 {
 115     wxString ext;
 116     wxFileName::SplitPath(path, NULL, NULL, &ext);
 117
 118     // VZ: extensions are considered not case sensitive - is this really a good
 119     //     idea?
 120     return ext.MakeLower();
 121 }
 122
 123 // return the string used for the MRU list items in the menu
 124 //
 125 // NB: the index n is 0-based, as usual, but the strings start from 1
 126 wxString GetMRUEntryLabel(int n, const wxString& path)
 127 {
 128     // we need to quote '&' characters which are used for mnemonics
 129     wxString pathInMenu(path);
 130     pathInMenu.Replace("&", "&&");
 131
 132     return wxString::Format("&%d %s", n + 1, pathInMenu);
 133 }
 134
 135 } // anonymous namespace
 136
 137 // ----------------------------------------------------------------------------
 138 // Definition of wxDocument
 139 // ----------------------------------------------------------------------------
 140
 141 wxDocument::wxDocument(wxDocument *parent)
 142 {
 143     m_documentModified = false;
 144     m_documentParent = parent;
 145     m_documentTemplate = NULL;
 146     m_commandProcessor = NULL;
 147     m_savedYet = false;
 148 }
 149
 150 bool wxDocument::DeleteContents()
 151 {
 152     return true;
 153 }
 154
 155 wxDocument::~wxDocument()
 156 {
 157     DeleteContents();
 158
 159     if (m_commandProcessor)
 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 OnCloseDocument();
 175     else
 176         return false;
 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.GetCount() == 0)
 237         return NULL;
 238     return (wxView *)m_documentViews.GetFirst()->GetData();
 239 }
 240
 241 wxDocManager *wxDocument::GetDocumentManager() const
 242 {
 243     return m_documentTemplate ? m_documentTemplate->GetDocumentManager() : NULL;
 244 }
 245
 246 bool wxDocument::OnNewDocument()
 247 {
 248     if ( !OnSaveModified() )
 249         return false;
 250
 251     DeleteContents();
 252     Modify(false);
 253     SetDocumentSaved(false);
 254
 255     const wxString name = GetDocumentManager()->MakeNewDocumentName();
 256     SetTitle(name);
 257     SetFilename(name, true);
 258
 259     return true;
 260 }
 261
 262 bool wxDocument::Save()
 263 {
 264     if ( AlreadySaved() )
 265         return true;
 266
 267     if ( m_documentFile.empty() || !m_savedYet )
 268         return SaveAs();
 269
 270     return OnSaveDocument(m_documentFile);
 271 }
 272
 273 bool wxDocument::SaveAs()
 274 {
 275     wxDocTemplate *docTemplate = GetDocumentTemplate();
 276     if (!docTemplate)
 277         return false;
 278
 279 #if defined(__WXMSW__) || defined(__WXGTK__) || defined(__WXMAC__)
 280     wxString filter = docTemplate->GetDescription() + wxT(" (") + docTemplate->GetFileFilter() + wxT(")|") + docTemplate->GetFileFilter();
 281
 282     // Now see if there are some other template with identical view and document
 283     // classes, whose filters may also be used.
 284
 285     if (docTemplate->GetViewClassInfo() && docTemplate->GetDocClassInfo())
 286     {
 287         wxList::compatibility_iterator node = docTemplate->GetDocumentManager()->GetTemplates().GetFirst();
 288         while (node)
 289         {
 290             wxDocTemplate *t = (wxDocTemplate*) node->GetData();
 291
 292             if (t->IsVisible() && t != docTemplate &&
 293                 t->GetViewClassInfo() == docTemplate->GetViewClassInfo() &&
 294                 t->GetDocClassInfo() == docTemplate->GetDocClassInfo())
 295             {
 296                 // add a '|' to separate this filter from the previous one
 297                 if ( !filter.empty() )
 298                     filter << wxT('|');
 299
 300                 filter << t->GetDescription() << wxT(" (") << t->GetFileFilter() << wxT(") |")
 301                        << t->GetFileFilter();
 302             }
 303
 304             node = node->GetNext();
 305         }
 306     }
 307 #else
 308     wxString filter = docTemplate->GetFileFilter() ;
 309 #endif
 310     wxString defaultDir = docTemplate->GetDirectory();
 311     if ( defaultDir.empty() )
 312     {
 313         defaultDir = wxPathOnly(GetFilename());
 314         if ( defaultDir.empty() )
 315             defaultDir = GetDocumentManager()->GetLastDirectory();
 316     }
 317
 318     wxString fileName = wxFileSelector(_("Save As"),
 319             defaultDir,
 320             wxFileNameFromPath(GetFilename()),
 321             docTemplate->GetDefaultExtension(),
 322             filter,
 323             wxFD_SAVE | wxFD_OVERWRITE_PROMPT,
 324             GetDocumentWindow());
 325
 326     if (fileName.empty())
 327         return false;
 328
 329     wxString ext;
 330     wxFileName::SplitPath(fileName, NULL, NULL, &ext);
 331
 332     if (ext.empty())
 333     {
 334         fileName += wxT(".");
 335         fileName += docTemplate->GetDefaultExtension();
 336     }
 337
 338     // Files that were not saved correctly are not added to the FileHistory.
 339     if (!OnSaveDocument(fileName))
 340         return false;
 341
 342     SetTitle(wxFileNameFromPath(fileName));
 343     SetFilename(fileName, true);    // will call OnChangeFileName automatically
 344
 345    // A file that doesn't use the default extension of its document template cannot be opened
 346    // via the FileHistory, so we do not add it.
 347    if (docTemplate->FileMatchesTemplate(fileName))
 348    {
 349        GetDocumentManager()->AddFileToHistory(fileName);
 350    }
 351    else
 352    {
 353        // The user will probably not be able to open the file again, so
 354        // we could warn about the wrong file-extension here.
 355    }
 356    return true;
 357 }
 358
 359 bool wxDocument::OnSaveDocument(const wxString& file)
 360 {
 361     if ( !file )
 362         return false;
 363
 364     if ( !DoSaveDocument(file) )
 365         return false;
 366
 367     Modify(false);
 368     SetFilename(file);
 369     SetDocumentSaved(true);
 370 #if defined( __WXOSX_MAC__ ) && wxOSX_USE_CARBON
 371     wxFileName fn(file) ;
 372     fn.MacSetDefaultTypeAndCreator() ;
 373 #endif
 374     return true;
 375 }
 376
 377 bool wxDocument::OnOpenDocument(const wxString& file)
 378 {
 379     if ( !OnSaveModified() )
 380         return false;
 381
 382     if ( !DoOpenDocument(file) )
 383         return false;
 384
 385     SetFilename(file, true);
 386     Modify(false);
 387     m_savedYet = true;
 388
 389     UpdateAllViews();
 390
 391     return true;
 392 }
 393
 394 #if wxUSE_STD_IOSTREAM
 395 wxSTD istream& wxDocument::LoadObject(wxSTD istream& stream)
 396 #else
 397 wxInputStream& wxDocument::LoadObject(wxInputStream& stream)
 398 #endif
 399 {
 400     return stream;
 401 }
 402
 403 #if wxUSE_STD_IOSTREAM
 404 wxSTD ostream& wxDocument::SaveObject(wxSTD ostream& stream)
 405 #else
 406 wxOutputStream& wxDocument::SaveObject(wxOutputStream& stream)
 407 #endif
 408 {
 409     return stream;
 410 }
 411
 412 bool wxDocument::Revert()
 413 {
 414     return false;
 415 }
 416
 417
 418 // Get title, or filename if no title, else unnamed
 419 #if WXWIN_COMPATIBILITY_2_8
 420 bool wxDocument::GetPrintableName(wxString& buf) const
 421 {
 422     // this function can not only be overridden by the user code but also
 423     // called by it so we need to ensure that we return the same thing as
 424     // GetUserReadableName() but we can't call it because this would result in
 425     // an infinite recursion, hence we use the helper DoGetUserReadableName()
 426     buf = DoGetUserReadableName();
 427
 428     return true;
 429 }
 430 #endif // WXWIN_COMPATIBILITY_2_8
 431
 432 wxString wxDocument::GetUserReadableName() const
 433 {
 434 #if WXWIN_COMPATIBILITY_2_8
 435     // we need to call the old virtual function to ensure that the overridden
 436     // version of it is still called
 437     wxString name;
 438     if ( GetPrintableName(name) )
 439         return name;
 440 #endif // WXWIN_COMPATIBILITY_2_8
 441
 442     return DoGetUserReadableName();
 443 }
 444
 445 wxString wxDocument::DoGetUserReadableName() const
 446 {
 447     if ( !m_documentTitle.empty() )
 448         return m_documentTitle;
 449
 450     if ( !m_documentFile.empty() )
 451         return wxFileNameFromPath(m_documentFile);
 452
 453     return _("unnamed");
 454 }
 455
 456 wxWindow *wxDocument::GetDocumentWindow() const
 457 {
 458     wxView *view = GetFirstView();
 459     if (view)
 460         return view->GetFrame();
 461     else
 462         return wxTheApp->GetTopWindow();
 463 }
 464
 465 wxCommandProcessor *wxDocument::OnCreateCommandProcessor()
 466 {
 467     return new wxCommandProcessor;
 468 }
 469
 470 // true if safe to close
 471 bool wxDocument::OnSaveModified()
 472 {
 473     if ( IsModified() )
 474     {
 475         switch ( wxMessageBox
 476                  (
 477                     wxString::Format
 478                     (
 479                      _("Do you want to save changes to %s?"),
 480                      GetUserReadableName()
 481                     ),
 482                     wxTheApp->GetAppDisplayName(),
 483                     wxYES_NO | wxCANCEL | wxICON_QUESTION | wxCENTRE,
 484                     wxFindSuitableParent()
 485                  ) )
 486         {
 487             case wxNO:
 488                 Modify(false);
 489                 break;
 490
 491             case wxYES:
 492                 return Save();
 493
 494             case wxCANCEL:
 495                 return false;
 496         }
 497     }
 498
 499     return true;
 500 }
 501
 502 bool wxDocument::Draw(wxDC& WXUNUSED(context))
 503 {
 504     return true;
 505 }
 506
 507 bool wxDocument::AddView(wxView *view)
 508 {
 509     if ( !m_documentViews.Member(view) )
 510     {
 511         m_documentViews.Append(view);
 512         OnChangedViewList();
 513     }
 514     return true;
 515 }
 516
 517 bool wxDocument::RemoveView(wxView *view)
 518 {
 519     (void)m_documentViews.DeleteObject(view);
 520     OnChangedViewList();
 521     return true;
 522 }
 523
 524 bool wxDocument::OnCreate(const wxString& WXUNUSED(path), long flags)
 525 {
 526     return GetDocumentTemplate()->CreateView(this, flags) != NULL;
 527 }
 528
 529 // Called after a view is added or removed.
 530 // The default implementation deletes the document if
 531 // there are no more views.
 532 void wxDocument::OnChangedViewList()
 533 {
 534     if ( m_documentViews.empty() && OnSaveModified() )
 535         delete this;
 536 }
 537
 538 void wxDocument::UpdateAllViews(wxView *sender, wxObject *hint)
 539 {
 540     wxList::compatibility_iterator node = m_documentViews.GetFirst();
 541     while (node)
 542     {
 543         wxView *view = (wxView *)node->GetData();
 544         if (view != sender)
 545             view->OnUpdate(sender, hint);
 546         node = node->GetNext();
 547     }
 548 }
 549
 550 void wxDocument::NotifyClosing()
 551 {
 552     wxList::compatibility_iterator node = m_documentViews.GetFirst();
 553     while (node)
 554     {
 555         wxView *view = (wxView *)node->GetData();
 556         view->OnClosingDocument();
 557         node = node->GetNext();
 558     }
 559 }
 560
 561 void wxDocument::SetFilename(const wxString& filename, bool notifyViews)
 562 {
 563     m_documentFile = filename;
 564     OnChangeFilename(notifyViews);
 565 }
 566
 567 void wxDocument::OnChangeFilename(bool notifyViews)
 568 {
 569     if ( notifyViews )
 570     {
 571         // Notify the views that the filename has changed
 572         wxList::compatibility_iterator node = m_documentViews.GetFirst();
 573         while (node)
 574         {
 575             wxView *view = (wxView *)node->GetData();
 576             view->OnChangeFilename();
 577             node = node->GetNext();
 578         }
 579     }
 580 }
 581
 582 bool wxDocument::DoSaveDocument(const wxString& file)
 583 {
 584 #if wxUSE_STD_IOSTREAM
 585     wxSTD ofstream store(file.mb_str(), wxSTD ios::binary);
 586     if ( !store )
 587 #else
 588     wxFileOutputStream store(file);
 589     if ( store.GetLastError() != wxSTREAM_NO_ERROR )
 590 #endif
 591     {
 592         wxLogError(_("File \"%s\" could not be opened for writing."), file);
 593         return false;
 594     }
 595
 596     if (!SaveObject(store))
 597     {
 598         wxLogError(_("Failed to save document to the file \"%s\"."), file);
 599         return false;
 600     }
 601
 602     return true;
 603 }
 604
 605 bool wxDocument::DoOpenDocument(const wxString& file)
 606 {
 607 #if wxUSE_STD_IOSTREAM
 608     wxSTD ifstream store(file.mb_str(), wxSTD ios::binary);
 609     if ( !store )
 610 #else
 611     wxFileInputStream store(file);
 612     if (store.GetLastError() != wxSTREAM_NO_ERROR || !store.IsOk())
 613 #endif
 614     {
 615         wxLogError(_("File \"%s\" could not be opened for reading."), file);
 616         return false;
 617     }
 618
 619 #if wxUSE_STD_IOSTREAM
 620     LoadObject(store);
 621     if ( !store )
 622 #else
 623     int res = LoadObject(store).GetLastError();
 624     if ( res != wxSTREAM_NO_ERROR && res != wxSTREAM_EOF )
 625 #endif
 626     {
 627         wxLogError(_("Failed to read document from the file \"%s\"."), file);
 628         return false;
 629     }
 630
 631     return true;
 632 }
 633
 634
 635 // ----------------------------------------------------------------------------
 636 // Document view
 637 // ----------------------------------------------------------------------------
 638
 639 wxView::wxView()
 640 {
 641     m_viewDocument = NULL;
 642
 643     m_viewFrame = NULL;
 644 }
 645
 646 wxView::~wxView()
 647 {
 648     GetDocumentManager()->ActivateView(this, false);
 649     m_viewDocument->RemoveView(this);
 650 }
 651
 652 bool wxView::TryValidator(wxEvent& event)
 653 {
 654     wxDocument * const doc = GetDocument();
 655     return doc && doc->ProcessEventHere(event);
 656 }
 657
 658 void wxView::OnActivateView(bool WXUNUSED(activate), wxView *WXUNUSED(activeView), wxView *WXUNUSED(deactiveView))
 659 {
 660 }
 661
 662 void wxView::OnPrint(wxDC *dc, wxObject *WXUNUSED(info))
 663 {
 664     OnDraw(dc);
 665 }
 666
 667 void wxView::OnUpdate(wxView *WXUNUSED(sender), wxObject *WXUNUSED(hint))
 668 {
 669 }
 670
 671 void wxView::OnChangeFilename()
 672 {
 673     // GetFrame can return wxWindow rather than wxTopLevelWindow due to
 674     // generic MDI implementation so use SetLabel rather than SetTitle.
 675     // It should cause SetTitle() for top level windows.
 676     wxWindow *win = GetFrame();
 677     if (!win) return;
 678
 679     wxDocument *doc = GetDocument();
 680     if (!doc) return;
 681
 682     win->SetLabel(doc->GetUserReadableName());
 683 }
 684
 685 void wxView::SetDocument(wxDocument *doc)
 686 {
 687     m_viewDocument = doc;
 688     if (doc)
 689         doc->AddView(this);
 690 }
 691
 692 bool wxView::Close(bool deleteWindow)
 693 {
 694     return OnClose(deleteWindow);
 695 }
 696
 697 void wxView::Activate(bool activate)
 698 {
 699     if (GetDocument() && GetDocumentManager())
 700     {
 701         OnActivateView(activate, this, GetDocumentManager()->GetCurrentView());
 702         GetDocumentManager()->ActivateView(this, activate);
 703     }
 704 }
 705
 706 bool wxView::OnClose(bool WXUNUSED(deleteWindow))
 707 {
 708     return GetDocument() ? GetDocument()->Close() : true;
 709 }
 710
 711 #if wxUSE_PRINTING_ARCHITECTURE
 712 wxPrintout *wxView::OnCreatePrintout()
 713 {
 714     return new wxDocPrintout(this);
 715 }
 716 #endif // wxUSE_PRINTING_ARCHITECTURE
 717
 718 // ----------------------------------------------------------------------------
 719 // wxDocTemplate
 720 // ----------------------------------------------------------------------------
 721
 722 wxDocTemplate::wxDocTemplate(wxDocManager *manager,
 723                              const wxString& descr,
 724                              const wxString& filter,
 725                              const wxString& dir,
 726                              const wxString& ext,
 727                              const wxString& docTypeName,
 728                              const wxString& viewTypeName,
 729                              wxClassInfo *docClassInfo,
 730                              wxClassInfo *viewClassInfo,
 731                              long flags)
 732 {
 733     m_documentManager = manager;
 734     m_description = descr;
 735     m_directory = dir;
 736     m_defaultExt = ext;
 737     m_fileFilter = filter;
 738     m_flags = flags;
 739     m_docTypeName = docTypeName;
 740     m_viewTypeName = viewTypeName;
 741     m_documentManager->AssociateTemplate(this);
 742
 743     m_docClassInfo = docClassInfo;
 744     m_viewClassInfo = viewClassInfo;
 745 }
 746
 747 wxDocTemplate::~wxDocTemplate()
 748 {
 749     m_documentManager->DisassociateTemplate(this);
 750 }
 751
 752 // Tries to dynamically construct an object of the right class.
 753 wxDocument *wxDocTemplate::CreateDocument(const wxString& path, long flags)
 754 {
 755     wxDocument * const doc = DoCreateDocument();
 756
 757     // VZ: this code doesn't delete doc if InitDocument() (i.e. doc->OnCreate())
 758     //     fails, is this intentional?
 759
 760     return doc && InitDocument(doc, path, flags) ? doc : NULL;
 761 }
 762
 763 bool
 764 wxDocTemplate::InitDocument(wxDocument* doc, const wxString& path, long flags)
 765 {
 766     doc->SetFilename(path);
 767     doc->SetDocumentTemplate(this);
 768     GetDocumentManager()->AddDocument(doc);
 769     doc->SetCommandProcessor(doc->OnCreateCommandProcessor());
 770
 771     if (doc->OnCreate(path, flags))
 772         return true;
 773     else
 774     {
 775         if (GetDocumentManager()->GetDocuments().Member(doc))
 776             doc->DeleteAllViews();
 777         return false;
 778     }
 779 }
 780
 781 wxView *wxDocTemplate::CreateView(wxDocument *doc, long flags)
 782 {
 783     wxScopedPtr<wxView> view(DoCreateView());
 784     if ( !view )
 785         return NULL;
 786
 787     view->SetDocument(doc);
 788     if ( !view->OnCreate(doc, flags) )
 789         return NULL;
 790
 791     return view.release();
 792 }
 793
 794 // The default (very primitive) format detection: check is the extension is
 795 // that of the template
 796 bool wxDocTemplate::FileMatchesTemplate(const wxString& path)
 797 {
 798     wxStringTokenizer parser (GetFileFilter(), wxT(";"));
 799     wxString anything = wxT ("*");
 800     while (parser.HasMoreTokens())
 801     {
 802         wxString filter = parser.GetNextToken();
 803         wxString filterExt = FindExtension (filter);
 804         if ( filter.IsSameAs (anything)    ||
 805              filterExt.IsSameAs (anything) ||
 806              filterExt.IsSameAs (FindExtension (path)) )
 807             return true;
 808     }
 809     return GetDefaultExtension().IsSameAs(FindExtension(path));
 810 }
 811
 812 wxDocument *wxDocTemplate::DoCreateDocument()
 813 {
 814     if (!m_docClassInfo)
 815         return NULL;
 816
 817     return (wxDocument *)m_docClassInfo->CreateObject();
 818 }
 819
 820 wxView *wxDocTemplate::DoCreateView()
 821 {
 822     if (!m_viewClassInfo)
 823         return NULL;
 824
 825     return (wxView *)m_viewClassInfo->CreateObject();
 826 }
 827
 828 // ----------------------------------------------------------------------------
 829 // wxDocManager
 830 // ----------------------------------------------------------------------------
 831
 832 BEGIN_EVENT_TABLE(wxDocManager, wxEvtHandler)
 833     EVT_MENU(wxID_OPEN, wxDocManager::OnFileOpen)
 834     EVT_MENU(wxID_CLOSE, wxDocManager::OnFileClose)
 835     EVT_MENU(wxID_CLOSE_ALL, wxDocManager::OnFileCloseAll)
 836     EVT_MENU(wxID_REVERT, wxDocManager::OnFileRevert)
 837     EVT_MENU(wxID_NEW, wxDocManager::OnFileNew)
 838     EVT_MENU(wxID_SAVE, wxDocManager::OnFileSave)
 839     EVT_MENU(wxID_SAVEAS, wxDocManager::OnFileSaveAs)
 840     EVT_MENU(wxID_UNDO, wxDocManager::OnUndo)
 841     EVT_MENU(wxID_REDO, wxDocManager::OnRedo)
 842
 843     EVT_UPDATE_UI(wxID_OPEN, wxDocManager::OnUpdateFileOpen)
 844     EVT_UPDATE_UI(wxID_CLOSE, wxDocManager::OnUpdateDisableIfNoDoc)
 845     EVT_UPDATE_UI(wxID_CLOSE_ALL, wxDocManager::OnUpdateDisableIfNoDoc)
 846     EVT_UPDATE_UI(wxID_REVERT, wxDocManager::OnUpdateDisableIfNoDoc)
 847     EVT_UPDATE_UI(wxID_NEW, wxDocManager::OnUpdateFileNew)
 848     EVT_UPDATE_UI(wxID_SAVE, wxDocManager::OnUpdateFileSave)
 849     EVT_UPDATE_UI(wxID_SAVEAS, wxDocManager::OnUpdateDisableIfNoDoc)
 850     EVT_UPDATE_UI(wxID_UNDO, wxDocManager::OnUpdateUndo)
 851     EVT_UPDATE_UI(wxID_REDO, wxDocManager::OnUpdateRedo)
 852
 853 #if wxUSE_PRINTING_ARCHITECTURE
 854     EVT_MENU(wxID_PRINT, wxDocManager::OnPrint)
 855     EVT_MENU(wxID_PREVIEW, wxDocManager::OnPreview)
 856
 857     EVT_UPDATE_UI(wxID_PRINT, wxDocManager::OnUpdateDisableIfNoDoc)
 858     EVT_UPDATE_UI(wxID_PREVIEW, wxDocManager::OnUpdateDisableIfNoDoc)
 859 #endif
 860 END_EVENT_TABLE()
 861
 862 wxDocManager* wxDocManager::sm_docManager = NULL;
 863
 864 wxDocManager::wxDocManager(long WXUNUSED(flags), bool initialize)
 865 {
 866     wxASSERT_MSG( !sm_docManager, "multiple wxDocManagers not allowed" );
 867
 868     sm_docManager = this;
 869
 870     m_defaultDocumentNameCounter = 1;
 871     m_currentView = NULL;
 872     m_maxDocsOpen = INT_MAX;
 873     m_fileHistory = NULL;
 874     if ( initialize )
 875         Initialize();
 876 }
 877
 878 wxDocManager::~wxDocManager()
 879 {
 880     Clear();
 881     delete m_fileHistory;
 882     sm_docManager = NULL;
 883 }
 884
 885 // closes the specified document
 886 bool wxDocManager::CloseDocument(wxDocument* doc, bool force)
 887 {
 888     if (doc->Close() || force)
 889     {
 890         // Implicitly deletes the document when
 891         // the last view is deleted
 892         doc->DeleteAllViews();
 893
 894         // Check we're really deleted
 895         if (m_docs.Member(doc))
 896             delete doc;
 897
 898         return true;
 899     }
 900     return false;
 901 }
 902
 903 bool wxDocManager::CloseDocuments(bool force)
 904 {
 905     wxList::compatibility_iterator node = m_docs.GetFirst();
 906     while (node)
 907     {
 908         wxDocument *doc = (wxDocument *)node->GetData();
 909         wxList::compatibility_iterator next = node->GetNext();
 910
 911         if (!CloseDocument(doc, force))
 912             return false;
 913
 914         // This assumes that documents are not connected in
 915         // any way, i.e. deleting one document does NOT
 916         // delete another.
 917         node = next;
 918     }
 919     return true;
 920 }
 921
 922 bool wxDocManager::Clear(bool force)
 923 {
 924     if (!CloseDocuments(force))
 925         return false;
 926
 927     m_currentView = NULL;
 928
 929     wxList::compatibility_iterator node = m_templates.GetFirst();
 930     while (node)
 931     {
 932         wxDocTemplate *templ = (wxDocTemplate*) node->GetData();
 933         wxList::compatibility_iterator next = node->GetNext();
 934         delete templ;
 935         node = next;
 936     }
 937     return true;
 938 }
 939
 940 bool wxDocManager::Initialize()
 941 {
 942     m_fileHistory = OnCreateFileHistory();
 943     return true;
 944 }
 945
 946 wxString wxDocManager::GetLastDirectory() const
 947 {
 948     // use the system-dependent default location for the document files if
 949     // we're being opened for the first time
 950     if ( m_lastDirectory.empty() )
 951     {
 952         wxDocManager * const self = const_cast<wxDocManager *>(this);
 953         self->m_lastDirectory = wxStandardPaths::Get().GetAppDocumentsDir();
 954     }
 955
 956     return m_lastDirectory;
 957 }
 958
 959 wxFileHistory *wxDocManager::OnCreateFileHistory()
 960 {
 961     return new wxFileHistory;
 962 }
 963
 964 void wxDocManager::OnFileClose(wxCommandEvent& WXUNUSED(event))
 965 {
 966     wxDocument *doc = GetCurrentDocument();
 967     if (!doc)
 968         return;
 969     if (doc->Close())
 970     {
 971         doc->DeleteAllViews();
 972         if (m_docs.Member(doc))
 973             delete doc;
 974     }
 975 }
 976
 977 void wxDocManager::OnFileCloseAll(wxCommandEvent& WXUNUSED(event))
 978 {
 979     CloseDocuments(false);
 980 }
 981
 982 void wxDocManager::OnFileNew(wxCommandEvent& WXUNUSED(event))
 983 {
 984     CreateNewDocument();
 985 }
 986
 987 void wxDocManager::OnFileOpen(wxCommandEvent& WXUNUSED(event))
 988 {
 989     if ( !CreateDocument( wxEmptyString, 0) )
 990     {
 991         OnOpenFileFailure();
 992     }
 993 }
 994
 995 void wxDocManager::OnFileRevert(wxCommandEvent& WXUNUSED(event))
 996 {
 997     wxDocument *doc = GetCurrentDocument();
 998     if (!doc)
 999         return;
1000     doc->Revert();
1001 }
1002
1003 void wxDocManager::OnFileSave(wxCommandEvent& WXUNUSED(event))
1004 {
1005     wxDocument *doc = GetCurrentDocument();
1006     if (!doc)
1007         return;
1008     doc->Save();
1009 }
1010
1011 void wxDocManager::OnFileSaveAs(wxCommandEvent& WXUNUSED(event))
1012 {
1013     wxDocument *doc = GetCurrentDocument();
1014     if (!doc)
1015         return;
1016     doc->SaveAs();
1017 }
1018
1019 void wxDocManager::OnPrint(wxCommandEvent& WXUNUSED(event))
1020 {
1021 #if wxUSE_PRINTING_ARCHITECTURE
1022     wxView *view = GetCurrentView();
1023     if (!view)
1024         return;
1025
1026     wxPrintout *printout = view->OnCreatePrintout();
1027     if (printout)
1028     {
1029         wxPrinter printer;
1030         printer.Print(view->GetFrame(), printout, true);
1031
1032         delete printout;
1033     }
1034 #endif // wxUSE_PRINTING_ARCHITECTURE
1035 }
1036
1037 void wxDocManager::OnPreview(wxCommandEvent& WXUNUSED(event))
1038 {
1039 #if wxUSE_PRINTING_ARCHITECTURE
1040     wxView *view = GetCurrentView();
1041     if (!view)
1042         return;
1043
1044     wxPrintout *printout = view->OnCreatePrintout();
1045     if (printout)
1046     {
1047         // Pass two printout objects: for preview, and possible printing.
1048         wxPrintPreviewBase *preview = new wxPrintPreview(printout, view->OnCreatePrintout());
1049         if ( !preview->Ok() )
1050         {
1051             delete preview;
1052             wxMessageBox( _("Sorry, print preview needs a printer to be installed.") );
1053             return;
1054         }
1055
1056         wxPreviewFrame *frame = new wxPreviewFrame(preview, (wxFrame *)wxTheApp->GetTopWindow(), _("Print Preview"),
1057                 wxPoint(100, 100), wxSize(600, 650));
1058         frame->Centre(wxBOTH);
1059         frame->Initialize();
1060         frame->Show(true);
1061     }
1062 #endif // wxUSE_PRINTING_ARCHITECTURE
1063 }
1064
1065 void wxDocManager::OnUndo(wxCommandEvent& event)
1066 {
1067     wxDocument *doc = GetCurrentDocument();
1068     if (!doc)
1069         return;
1070     if (doc->GetCommandProcessor())
1071         doc->GetCommandProcessor()->Undo();
1072     else
1073         event.Skip();
1074 }
1075
1076 void wxDocManager::OnRedo(wxCommandEvent& event)
1077 {
1078     wxDocument *doc = GetCurrentDocument();
1079     if (!doc)
1080         return;
1081     if (doc->GetCommandProcessor())
1082         doc->GetCommandProcessor()->Redo();
1083     else
1084         event.Skip();
1085 }
1086
1087 // Handlers for UI update commands
1088
1089 void wxDocManager::OnUpdateFileOpen(wxUpdateUIEvent& event)
1090 {
1091     // CreateDocument() (which is called from OnFileOpen) may succeed
1092     // only when there is at least a template:
1093     event.Enable( GetTemplates().GetCount()>0 );
1094 }
1095
1096 void wxDocManager::OnUpdateDisableIfNoDoc(wxUpdateUIEvent& event)
1097 {
1098     event.Enable( GetCurrentDocument() != NULL );
1099 }
1100
1101 void wxDocManager::OnUpdateFileNew(wxUpdateUIEvent& event)
1102 {
1103     // CreateDocument() (which is called from OnFileNew) may succeed
1104     // only when there is at least a template:
1105     event.Enable( GetTemplates().GetCount()>0 );
1106 }
1107
1108 void wxDocManager::OnUpdateFileSave(wxUpdateUIEvent& event)
1109 {
1110     wxDocument * const doc = GetCurrentDocument();
1111     event.Enable( doc && !doc->AlreadySaved() );
1112 }
1113
1114 void wxDocManager::OnUpdateUndo(wxUpdateUIEvent& event)
1115 {
1116     wxDocument *doc = GetCurrentDocument();
1117     if (!doc)
1118         event.Enable(false);
1119     else if (!doc->GetCommandProcessor())
1120         event.Skip();
1121     else
1122     {
1123         event.Enable( doc->GetCommandProcessor()->CanUndo() );
1124         doc->GetCommandProcessor()->SetMenuStrings();
1125     }
1126 }
1127
1128 void wxDocManager::OnUpdateRedo(wxUpdateUIEvent& event)
1129 {
1130     wxDocument *doc = GetCurrentDocument();
1131     if (!doc)
1132         event.Enable(false);
1133     else if (!doc->GetCommandProcessor())
1134         event.Skip();
1135     else
1136     {
1137         event.Enable( doc->GetCommandProcessor()->CanRedo() );
1138         doc->GetCommandProcessor()->SetMenuStrings();
1139     }
1140 }
1141
1142 wxView *wxDocManager::GetCurrentView() const
1143 {
1144     if (m_currentView)
1145         return m_currentView;
1146     if (m_docs.GetCount() == 1)
1147     {
1148         wxDocument* doc = (wxDocument*) m_docs.GetFirst()->GetData();
1149         return doc->GetFirstView();
1150     }
1151     return NULL;
1152 }
1153
1154 bool wxDocManager::TryValidator(wxEvent& event)
1155 {
1156     wxView * const view = GetCurrentView();
1157     return view && view->ProcessEventHere(event);
1158 }
1159
1160 namespace
1161 {
1162
1163 // helper function: return only the visible templates
1164 wxDocTemplates GetVisibleTemplates(const wxList& allTemplates)
1165 {
1166     // select only the visible templates
1167     const size_t totalNumTemplates = allTemplates.GetCount();
1168     wxDocTemplates templates;
1169     if ( totalNumTemplates )
1170     {
1171         templates.reserve(totalNumTemplates);
1172
1173         for ( wxList::const_iterator i = allTemplates.begin(),
1174                                    end = allTemplates.end();
1175               i != end;
1176               ++i )
1177         {
1178             wxDocTemplate * const temp = (wxDocTemplate *)*i;
1179             if ( temp->IsVisible() )
1180                 templates.push_back(temp);
1181         }
1182     }
1183
1184     return templates;
1185 }
1186
1187 } // anonymous namespace
1188
1189 wxDocument *wxDocManager::CreateDocument(const wxString& pathOrig, long flags)
1190 {
1191     // this ought to be const but SelectDocumentType/Path() are not
1192     // const-correct and can't be changed as, being virtual, this risks
1193     // breaking user code overriding them
1194     wxDocTemplates templates(GetVisibleTemplates(m_templates));
1195     const size_t numTemplates = templates.size();
1196     if ( !numTemplates )
1197     {
1198         // no templates can be used, can't create document
1199         return NULL;
1200     }
1201
1202
1203     // normally user should select the template to use but wxDOC_SILENT flag we
1204     // choose one ourselves
1205     wxString path = pathOrig;   // may be modified below
1206     wxDocTemplate *temp;
1207     if ( flags & wxDOC_SILENT )
1208     {
1209         wxASSERT_MSG( !path.empty(),
1210                       "using empty path with wxDOC_SILENT doesn't make sense" );
1211
1212         temp = FindTemplateForPath(path);
1213         if ( !temp )
1214         {
1215             wxLogWarning(_("The format of file '%s' couldn't be determined."),
1216                          path);
1217         }
1218     }
1219     else // not silent, ask the user
1220     {
1221         // for the new file we need just the template, for an existing one we
1222         // need the template and the path, unless it's already specified
1223         if ( (flags & wxDOC_NEW) || !path.empty() )
1224             temp = SelectDocumentType(&templates[0], numTemplates);
1225         else
1226             temp = SelectDocumentPath(&templates[0], numTemplates, path, flags);
1227     }
1228
1229     if ( !temp )
1230         return NULL;
1231
1232     // check whether the document with this path is already opened
1233     if ( !path.empty() )
1234     {
1235         const wxFileName fn(path);
1236         for ( wxList::const_iterator i = m_docs.begin(); i != m_docs.end(); ++i )
1237         {
1238             wxDocument * const doc = (wxDocument*)*i;
1239
1240             if ( fn == doc->GetFilename() )
1241             {
1242                 // file already open, just activate it and return
1243                 if ( doc->GetFirstView() )
1244                 {
1245                     ActivateView(doc->GetFirstView());
1246                     if ( doc->GetDocumentWindow() )
1247                         doc->GetDocumentWindow()->SetFocus();
1248                     return doc;
1249                 }
1250             }
1251         }
1252     }
1253
1254
1255     // no, we need to create a new document
1256
1257
1258     // if we've reached the max number of docs, close the first one.
1259     if ( (int)GetDocuments().GetCount() >= m_maxDocsOpen )
1260     {
1261         if ( !CloseDocument((wxDocument *)GetDocuments().GetFirst()->GetData()) )
1262         {
1263             // can't open the new document if closing the old one failed
1264             return NULL;
1265         }
1266     }
1267
1268
1269     // do create and initialize the new document finally
1270     wxDocument * const docNew = temp->CreateDocument(path, flags);
1271     if ( !docNew )
1272         return NULL;
1273
1274     docNew->SetDocumentName(temp->GetDocumentName());
1275     docNew->SetDocumentTemplate(temp);
1276
1277     // call the appropriate function depending on whether we're creating a new
1278     // file or opening an existing one
1279     if ( !(flags & wxDOC_NEW ? docNew->OnNewDocument()
1280                              : docNew->OnOpenDocument(path)) )
1281     {
1282          // Document is implicitly deleted by DeleteAllViews
1283          docNew->DeleteAllViews();
1284          return NULL;
1285     }
1286
1287     // add the successfully opened file to MRU, but only if we're going to be
1288     // able to reopen it successfully later which requires the template for
1289     // this document to be retrievable from the file extension
1290     if ( !(flags & wxDOC_NEW) && temp->FileMatchesTemplate(path) )
1291         AddFileToHistory(path);
1292
1293     return docNew;
1294 }
1295
1296 wxView *wxDocManager::CreateView(wxDocument *doc, long flags)
1297 {
1298     wxDocTemplates templates(GetVisibleTemplates(m_templates));
1299     const size_t numTemplates = templates.size();
1300
1301     if ( numTemplates == 0 )
1302         return NULL;
1303
1304     wxDocTemplate * const
1305     temp = numTemplates == 1 ? templates[0]
1306                              : SelectViewType(&templates[0], numTemplates);
1307
1308     if ( !temp )
1309         return NULL;
1310
1311     wxView *view = temp->CreateView(doc, flags);
1312     if ( view )
1313         view->SetViewName(temp->GetViewName());
1314     return view;
1315 }
1316
1317 // Not yet implemented
1318 void
1319 wxDocManager::DeleteTemplate(wxDocTemplate *WXUNUSED(temp), long WXUNUSED(flags))
1320 {
1321 }
1322
1323 // Not yet implemented
1324 bool wxDocManager::FlushDoc(wxDocument *WXUNUSED(doc))
1325 {
1326     return false;
1327 }
1328
1329 wxDocument *wxDocManager::GetCurrentDocument() const
1330 {
1331     wxView *view = GetCurrentView();
1332     if (view)
1333         return view->GetDocument();
1334     else
1335         return NULL;
1336 }
1337
1338 // Make a default name for a new document
1339 #if WXWIN_COMPATIBILITY_2_8
1340 bool wxDocManager::MakeDefaultName(wxString& WXUNUSED(name))
1341 {
1342     // we consider that this function can only be overridden by the user code,
1343     // not called by it as it only makes sense to call it internally, so we
1344     // don't bother to return anything from here
1345     return false;
1346 }
1347 #endif // WXWIN_COMPATIBILITY_2_8
1348
1349 wxString wxDocManager::MakeNewDocumentName()
1350 {
1351     wxString name;
1352
1353 #if WXWIN_COMPATIBILITY_2_8
1354     if ( !MakeDefaultName(name) )
1355 #endif // WXWIN_COMPATIBILITY_2_8
1356     {
1357         name.Printf(_("unnamed%d"), m_defaultDocumentNameCounter);
1358         m_defaultDocumentNameCounter++;
1359     }
1360
1361     return name;
1362 }
1363
1364 // Make a frame title (override this to do something different)
1365 // If docName is empty, a document is not currently active.
1366 wxString wxDocManager::MakeFrameTitle(wxDocument* doc)
1367 {
1368     wxString appName = wxTheApp->GetAppDisplayName();
1369     wxString title;
1370     if (!doc)
1371         title = appName;
1372     else
1373     {
1374         wxString docName = doc->GetUserReadableName();
1375         title = docName + wxString(_(" - ")) + appName;
1376     }
1377     return title;
1378 }
1379
1380
1381 // Not yet implemented
1382 wxDocTemplate *wxDocManager::MatchTemplate(const wxString& WXUNUSED(path))
1383 {
1384     return NULL;
1385 }
1386
1387 // File history management
1388 void wxDocManager::AddFileToHistory(const wxString& file)
1389 {
1390     if (m_fileHistory)
1391         m_fileHistory->AddFileToHistory(file);
1392 }
1393
1394 void wxDocManager::RemoveFileFromHistory(size_t i)
1395 {
1396     if (m_fileHistory)
1397         m_fileHistory->RemoveFileFromHistory(i);
1398 }
1399
1400 wxString wxDocManager::GetHistoryFile(size_t i) const
1401 {
1402     wxString histFile;
1403
1404     if (m_fileHistory)
1405         histFile = m_fileHistory->GetHistoryFile(i);
1406
1407     return histFile;
1408 }
1409
1410 void wxDocManager::FileHistoryUseMenu(wxMenu *menu)
1411 {
1412     if (m_fileHistory)
1413         m_fileHistory->UseMenu(menu);
1414 }
1415
1416 void wxDocManager::FileHistoryRemoveMenu(wxMenu *menu)
1417 {
1418     if (m_fileHistory)
1419         m_fileHistory->RemoveMenu(menu);
1420 }
1421
1422 #if wxUSE_CONFIG
1423 void wxDocManager::FileHistoryLoad(const wxConfigBase& config)
1424 {
1425     if (m_fileHistory)
1426         m_fileHistory->Load(config);
1427 }
1428
1429 void wxDocManager::FileHistorySave(wxConfigBase& config)
1430 {
1431     if (m_fileHistory)
1432         m_fileHistory->Save(config);
1433 }
1434 #endif
1435
1436 void wxDocManager::FileHistoryAddFilesToMenu(wxMenu* menu)
1437 {
1438     if (m_fileHistory)
1439         m_fileHistory->AddFilesToMenu(menu);
1440 }
1441
1442 void wxDocManager::FileHistoryAddFilesToMenu()
1443 {
1444     if (m_fileHistory)
1445         m_fileHistory->AddFilesToMenu();
1446 }
1447
1448 size_t wxDocManager::GetHistoryFilesCount() const
1449 {
1450     return m_fileHistory ? m_fileHistory->GetCount() : 0;
1451 }
1452
1453
1454 // Find out the document template via matching in the document file format
1455 // against that of the template
1456 wxDocTemplate *wxDocManager::FindTemplateForPath(const wxString& path)
1457 {
1458     wxDocTemplate *theTemplate = NULL;
1459
1460     // Find the template which this extension corresponds to
1461     for (size_t i = 0; i < m_templates.GetCount(); i++)
1462     {
1463         wxDocTemplate *temp = (wxDocTemplate *)m_templates.Item(i)->GetData();
1464         if ( temp->FileMatchesTemplate(path) )
1465         {
1466             theTemplate = temp;
1467             break;
1468         }
1469     }
1470     return theTemplate;
1471 }
1472
1473 // Prompts user to open a file, using file specs in templates.
1474 // Must extend the file selector dialog or implement own; OR
1475 // match the extension to the template extension.
1476
1477 wxDocTemplate *wxDocManager::SelectDocumentPath(wxDocTemplate **templates,
1478                                                 int noTemplates,
1479                                                 wxString& path,
1480                                                 long WXUNUSED(flags),
1481                                                 bool WXUNUSED(save))
1482 {
1483     // We can only have multiple filters in Windows and GTK
1484 #if defined(__WXMSW__) || defined(__WXGTK__) || defined(__WXMAC__)
1485     wxString descrBuf;
1486
1487     int i;
1488     for (i = 0; i < noTemplates; i++)
1489     {
1490         if (templates[i]->IsVisible())
1491         {
1492             // add a '|' to separate this filter from the previous one
1493             if ( !descrBuf.empty() )
1494                 descrBuf << wxT('|');
1495
1496             descrBuf << templates[i]->GetDescription()
1497                 << wxT(" (") << templates[i]->GetFileFilter() << wxT(") |")
1498                 << templates[i]->GetFileFilter();
1499         }
1500     }
1501 #else
1502     wxString descrBuf = wxT("*.*");
1503     wxUnusedVar(noTemplates);
1504 #endif
1505
1506     int FilterIndex = -1;
1507
1508     wxWindow* parent = wxFindSuitableParent();
1509
1510     wxString pathTmp = wxFileSelectorEx(_("Open File"),
1511                                         GetLastDirectory(),
1512                                         wxEmptyString,
1513                                         &FilterIndex,
1514                                         descrBuf,
1515                                         0,
1516                                         parent);
1517
1518     wxDocTemplate *theTemplate = NULL;
1519     if (!pathTmp.empty())
1520     {
1521         if (!wxFileExists(pathTmp))
1522         {
1523             wxString msgTitle;
1524             if (!wxTheApp->GetAppDisplayName().empty())
1525                 msgTitle = wxTheApp->GetAppDisplayName();
1526             else
1527                 msgTitle = wxString(_("File error"));
1528
1529             (void)wxMessageBox(_("Sorry, could not open this file."), msgTitle, wxOK | wxICON_EXCLAMATION | wxCENTRE,
1530                 parent);
1531
1532             path = wxEmptyString;
1533             return NULL;
1534         }
1535
1536         SetLastDirectory(wxPathOnly(pathTmp));
1537
1538         path = pathTmp;
1539
1540         // first choose the template using the extension, if this fails (i.e.
1541         // wxFileSelectorEx() didn't fill it), then use the path
1542         if ( FilterIndex != -1 )
1543             theTemplate = templates[FilterIndex];
1544         if ( !theTemplate )
1545             theTemplate = FindTemplateForPath(path);
1546         if ( !theTemplate )
1547         {
1548             // Since we do not add files with non-default extensions to the FileHistory this
1549             // can only happen if the application changes the allowed templates in runtime.
1550             (void)wxMessageBox(_("Sorry, the format for this file is unknown."),
1551                                 _("Open File"),
1552                                 wxOK | wxICON_EXCLAMATION | wxCENTRE, wxFindSuitableParent());
1553         }
1554     }
1555     else
1556     {
1557         path = wxEmptyString;
1558     }
1559
1560     return theTemplate;
1561 }
1562
1563 wxDocTemplate *wxDocManager::SelectDocumentType(wxDocTemplate **templates,
1564                                                 int noTemplates, bool sort)
1565 {
1566     wxArrayString strings;
1567     wxDocTemplate **data = new wxDocTemplate *[noTemplates];
1568     int i;
1569     int n = 0;
1570
1571     for (i = 0; i < noTemplates; i++)
1572     {
1573         if (templates[i]->IsVisible())
1574         {
1575             int j;
1576             bool want = true;
1577             for (j = 0; j < n; j++)
1578             {
1579                 //filter out NOT unique documents + view combinations
1580                 if ( templates[i]->m_docTypeName == data[j]->m_docTypeName &&
1581                      templates[i]->m_viewTypeName == data[j]->m_viewTypeName
1582                    )
1583                     want = false;
1584             }
1585
1586             if ( want )
1587             {
1588                 strings.Add(templates[i]->m_description);
1589
1590                 data[n] = templates[i];
1591                 n ++;
1592             }
1593         }
1594     }  // for
1595
1596     if (sort)
1597     {
1598         strings.Sort(); // ascending sort
1599         // Yes, this will be slow, but template lists
1600         // are typically short.
1601         int j;
1602         n = strings.Count();
1603         for (i = 0; i < n; i++)
1604         {
1605             for (j = 0; j < noTemplates; j++)
1606             {
1607                 if (strings[i] == templates[j]->m_description)
1608                     data[i] = templates[j];
1609             }
1610         }
1611     }
1612
1613     wxDocTemplate *theTemplate;
1614
1615     switch ( n )
1616     {
1617         case 0:
1618             // no visible templates, hence nothing to choose from
1619             theTemplate = NULL;
1620             break;
1621
1622         case 1:
1623             // don't propose the user to choose if he has no choice
1624             theTemplate = data[0];
1625             break;
1626
1627         default:
1628             // propose the user to choose one of several
1629             theTemplate = (wxDocTemplate *)wxGetSingleChoiceData
1630                           (
1631                             _("Select a document template"),
1632                             _("Templates"),
1633                             strings,
1634                             (void **)data,
1635                             wxFindSuitableParent()
1636                           );
1637     }
1638
1639     delete[] data;
1640
1641     return theTemplate;
1642 }
1643
1644 wxDocTemplate *wxDocManager::SelectViewType(wxDocTemplate **templates,
1645                                             int noTemplates, bool sort)
1646 {
1647     wxArrayString strings;
1648     wxDocTemplate **data = new wxDocTemplate *[noTemplates];
1649     int i;
1650     int n = 0;
1651
1652     for (i = 0; i < noTemplates; i++)
1653     {
1654         wxDocTemplate *templ = templates[i];
1655         if ( templ->IsVisible() && !templ->GetViewName().empty() )
1656         {
1657             int j;
1658             bool want = true;
1659             for (j = 0; j < n; j++)
1660             {
1661                 //filter out NOT unique views
1662                 if ( templates[i]->m_viewTypeName == data[j]->m_viewTypeName )
1663                     want = false;
1664             }
1665
1666             if ( want )
1667             {
1668                 strings.Add(templ->m_viewTypeName);
1669                 data[n] = templ;
1670                 n ++;
1671             }
1672         }
1673     }
1674
1675     if (sort)
1676     {
1677         strings.Sort(); // ascending sort
1678         // Yes, this will be slow, but template lists
1679         // are typically short.
1680         int j;
1681         n = strings.Count();
1682         for (i = 0; i < n; i++)
1683         {
1684             for (j = 0; j < noTemplates; j++)
1685             {
1686                 if (strings[i] == templates[j]->m_viewTypeName)
1687                     data[i] = templates[j];
1688             }
1689         }
1690     }
1691
1692     wxDocTemplate *theTemplate;
1693
1694     // the same logic as above
1695     switch ( n )
1696     {
1697         case 0:
1698             theTemplate = NULL;
1699             break;
1700
1701         case 1:
1702             theTemplate = data[0];
1703             break;
1704
1705         default:
1706             theTemplate = (wxDocTemplate *)wxGetSingleChoiceData
1707                           (
1708                             _("Select a document view"),
1709                             _("Views"),
1710                             strings,
1711                             (void **)data,
1712                             wxFindSuitableParent()
1713                           );
1714
1715     }
1716
1717     delete[] data;
1718     return theTemplate;
1719 }
1720
1721 void wxDocManager::AssociateTemplate(wxDocTemplate *temp)
1722 {
1723     if (!m_templates.Member(temp))
1724         m_templates.Append(temp);
1725 }
1726
1727 void wxDocManager::DisassociateTemplate(wxDocTemplate *temp)
1728 {
1729     m_templates.DeleteObject(temp);
1730 }
1731
1732 // Add and remove a document from the manager's list
1733 void wxDocManager::AddDocument(wxDocument *doc)
1734 {
1735     if (!m_docs.Member(doc))
1736         m_docs.Append(doc);
1737 }
1738
1739 void wxDocManager::RemoveDocument(wxDocument *doc)
1740 {
1741     m_docs.DeleteObject(doc);
1742 }
1743
1744 // Views or windows should inform the document manager
1745 // when a view is going in or out of focus
1746 void wxDocManager::ActivateView(wxView *view, bool activate)
1747 {
1748     if ( activate )
1749     {
1750         m_currentView = view;
1751     }
1752     else // deactivate
1753     {
1754         if ( m_currentView == view )
1755         {
1756             // don't keep stale pointer
1757             m_currentView = NULL;
1758         }
1759     }
1760 }
1761
1762 // ----------------------------------------------------------------------------
1763 // Default document child frame
1764 // ----------------------------------------------------------------------------
1765
1766 BEGIN_EVENT_TABLE(wxDocChildFrame, wxFrame)
1767     EVT_ACTIVATE(wxDocChildFrame::OnActivate)
1768     EVT_CLOSE(wxDocChildFrame::OnCloseWindow)
1769 END_EVENT_TABLE()
1770
1771 wxDocChildFrame::wxDocChildFrame(wxDocument *doc,
1772                                  wxView *view,
1773                                  wxFrame *frame,
1774                                  wxWindowID id,
1775                                  const wxString& title,
1776                                  const wxPoint& pos,
1777                                  const wxSize& size,
1778                                  long style,
1779                                  const wxString& name)
1780                : wxFrame(frame, id, title, pos, size, style, name)
1781 {
1782     m_childDocument = doc;
1783     m_childView = view;
1784     if (view)
1785         view->SetFrame(this);
1786 }
1787
1788 bool wxDocChildFrame::TryValidator(wxEvent& event)
1789 {
1790     if ( !m_childView )
1791         return false;
1792
1793     // FIXME: why is this needed here?
1794     m_childView->Activate(true);
1795
1796     return m_childView->ProcessEventHere(event);
1797 }
1798
1799 void wxDocChildFrame::OnActivate(wxActivateEvent& event)
1800 {
1801     wxFrame::OnActivate(event);
1802
1803     if (m_childView)
1804         m_childView->Activate(event.GetActive());
1805 }
1806
1807 void wxDocChildFrame::OnCloseWindow(wxCloseEvent& event)
1808 {
1809     if (m_childView)
1810     {
1811         bool ans = event.CanVeto()
1812                     ? m_childView->Close(false) // false means don't delete associated window
1813                     : true; // Must delete.
1814
1815         if (ans)
1816         {
1817             m_childView->Activate(false);
1818             delete m_childView;
1819             m_childView = NULL;
1820             m_childDocument = NULL;
1821
1822             this->Destroy();
1823         }
1824         else
1825             event.Veto();
1826     }
1827     else
1828         event.Veto();
1829 }
1830
1831 // ----------------------------------------------------------------------------
1832 // Default parent frame
1833 // ----------------------------------------------------------------------------
1834
1835 BEGIN_EVENT_TABLE(wxDocParentFrame, wxFrame)
1836     EVT_MENU(wxID_EXIT, wxDocParentFrame::OnExit)
1837     EVT_MENU_RANGE(wxID_FILE1, wxID_FILE9, wxDocParentFrame::OnMRUFile)
1838     EVT_CLOSE(wxDocParentFrame::OnCloseWindow)
1839 END_EVENT_TABLE()
1840
1841 wxDocParentFrame::wxDocParentFrame()
1842 {
1843     m_docManager = NULL;
1844 }
1845
1846 wxDocParentFrame::wxDocParentFrame(wxDocManager *manager,
1847                                    wxFrame *frame,
1848                                    wxWindowID id,
1849                                    const wxString& title,
1850                                    const wxPoint& pos,
1851                                    const wxSize& size,
1852                                    long style,
1853                                    const wxString& name)
1854                 : wxFrame(frame, id, title, pos, size, style, name)
1855 {
1856     m_docManager = manager;
1857 }
1858
1859 bool wxDocParentFrame::Create(wxDocManager *manager,
1860                               wxFrame *frame,
1861                               wxWindowID id,
1862                               const wxString& title,
1863                               const wxPoint& pos,
1864                               const wxSize& size,
1865                               long style,
1866                               const wxString& name)
1867 {
1868     m_docManager = manager;
1869     return base_type::Create(frame, id, title, pos, size, style, name);
1870 }
1871
1872 void wxDocParentFrame::OnExit(wxCommandEvent& WXUNUSED(event))
1873 {
1874     Close();
1875 }
1876
1877 void wxDocParentFrame::OnMRUFile(wxCommandEvent& event)
1878 {
1879     int n = event.GetId() - wxID_FILE1;  // the index in MRU list
1880     wxString filename(m_docManager->GetHistoryFile(n));
1881     if ( filename.empty() )
1882         return;
1883
1884     wxString errMsg; // must contain exactly one "%s" if non-empty
1885     if ( wxFile::Exists(filename) )
1886     {
1887         // try to open it
1888         if ( m_docManager->CreateDocument(filename, wxDOC_SILENT) )
1889             return;
1890
1891         errMsg = _("The file '%s' couldn't be opened.");
1892     }
1893     else // file doesn't exist
1894     {
1895         errMsg = _("The file '%s' doesn't exist and couldn't be opened.");
1896     }
1897
1898
1899     wxASSERT_MSG( !errMsg.empty(), "should have an error message" );
1900
1901     // remove the file which we can't open from the MRU list
1902     m_docManager->RemoveFileFromHistory(n);
1903
1904     // and tell the user about it
1905     wxLogError(errMsg + '\n' +
1906                _("It has been removed from the most recently used files list."),
1907                filename);
1908 }
1909
1910 // Extend event processing to search the view's event table
1911 bool wxDocParentFrame::TryValidator(wxEvent& event)
1912 {
1913     return m_docManager && m_docManager->ProcessEventHere(event);
1914 }
1915
1916 // Define the behaviour for the frame closing
1917 // - must delete all frames except for the main one.
1918 void wxDocParentFrame::OnCloseWindow(wxCloseEvent& event)
1919 {
1920     if (m_docManager->Clear(!event.CanVeto()))
1921     {
1922         this->Destroy();
1923     }
1924     else
1925         event.Veto();
1926 }
1927
1928 #if wxUSE_PRINTING_ARCHITECTURE
1929
1930 wxDocPrintout::wxDocPrintout(wxView *view, const wxString& title)
1931              : wxPrintout(title)
1932 {
1933     m_printoutView = view;
1934 }
1935
1936 bool wxDocPrintout::OnPrintPage(int WXUNUSED(page))
1937 {
1938     wxDC *dc = GetDC();
1939
1940     // Get the logical pixels per inch of screen and printer
1941     int ppiScreenX, ppiScreenY;
1942     GetPPIScreen(&ppiScreenX, &ppiScreenY);
1943     wxUnusedVar(ppiScreenY);
1944     int ppiPrinterX, ppiPrinterY;
1945     GetPPIPrinter(&ppiPrinterX, &ppiPrinterY);
1946     wxUnusedVar(ppiPrinterY);
1947
1948     // This scales the DC so that the printout roughly represents the
1949     // the screen scaling. The text point size _should_ be the right size
1950     // but in fact is too small for some reason. This is a detail that will
1951     // need to be addressed at some point but can be fudged for the
1952     // moment.
1953     float scale = (float)((float)ppiPrinterX/(float)ppiScreenX);
1954
1955     // Now we have to check in case our real page size is reduced
1956     // (e.g. because we're drawing to a print preview memory DC)
1957     int pageWidth, pageHeight;
1958     int w, h;
1959     dc->GetSize(&w, &h);
1960     GetPageSizePixels(&pageWidth, &pageHeight);
1961     wxUnusedVar(pageHeight);
1962
1963     // If printer pageWidth == current DC width, then this doesn't
1964     // change. But w might be the preview bitmap width, so scale down.
1965     float overallScale = scale * (float)(w/(float)pageWidth);
1966     dc->SetUserScale(overallScale, overallScale);
1967
1968     if (m_printoutView)
1969     {
1970         m_printoutView->OnDraw(dc);
1971     }
1972     return true;
1973 }
1974
1975 bool wxDocPrintout::HasPage(int pageNum)
1976 {
1977     return (pageNum == 1);
1978 }
1979
1980 bool wxDocPrintout::OnBeginDocument(int startPage, int endPage)
1981 {
1982     if (!wxPrintout::OnBeginDocument(startPage, endPage))
1983         return false;
1984
1985     return true;
1986 }
1987
1988 void wxDocPrintout::GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, int *selPageTo)
1989 {
1990     *minPage = 1;
1991     *maxPage = 1;
1992     *selPageFrom = 1;
1993     *selPageTo = 1;
1994 }
1995
1996 #endif // wxUSE_PRINTING_ARCHITECTURE
1997
1998 // ----------------------------------------------------------------------------
1999 // File history (a.k.a. MRU, most recently used, files list)
2000 // ----------------------------------------------------------------------------
2001
2002 wxFileHistory::wxFileHistory(size_t maxFiles, wxWindowID idBase)
2003 {
2004     m_fileMaxFiles = maxFiles;
2005     m_idBase = idBase;
2006 }
2007
2008 void wxFileHistory::AddFileToHistory(const wxString& file)
2009 {
2010     // check if we don't already have this file
2011     const wxFileName fnNew(file);
2012     size_t i,
2013            numFiles = m_fileHistory.size();
2014     for ( i = 0; i < numFiles; i++ )
2015     {
2016         if ( fnNew == m_fileHistory[i] )
2017         {
2018             // we do have it, move it to the top of the history
2019             RemoveFileFromHistory(i);
2020             numFiles--;
2021             break;
2022         }
2023     }
2024
2025     // if we already have a full history, delete the one at the end
2026     if ( numFiles == m_fileMaxFiles )
2027     {
2028         RemoveFileFromHistory(--numFiles);
2029     }
2030
2031     // add a new menu item to all file menus (they will be updated below)
2032     for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2033         node;
2034         node = node->GetNext() )
2035     {
2036         wxMenu * const menu = (wxMenu *)node->GetData();
2037
2038         if ( !numFiles && menu->GetMenuItemCount() )
2039             menu->AppendSeparator();
2040
2041         // label doesn't matter, it will be set below anyhow, but it can't
2042         // be empty (this is supposed to indicate a stock item)
2043         menu->Append(m_idBase + numFiles, " ");
2044     }
2045
2046     // insert the new file in the beginning of the file history
2047     m_fileHistory.insert(m_fileHistory.begin(), file);
2048     numFiles++;
2049
2050     // update the labels in all menus
2051     for ( i = 0; i < numFiles; i++ )
2052     {
2053         // if in same directory just show the filename; otherwise the full path
2054         const wxFileName fnOld(m_fileHistory[i]);
2055
2056         wxString pathInMenu;
2057         if ( fnOld.GetPath() == fnNew.GetPath() )
2058         {
2059             pathInMenu = fnOld.GetFullName();
2060         }
2061         else // file in different directory
2062         {
2063             // absolute path; could also set relative path
2064             pathInMenu = m_fileHistory[i];
2065         }
2066
2067         for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2068               node;
2069               node = node->GetNext() )
2070         {
2071             wxMenu * const menu = (wxMenu *)node->GetData();
2072
2073             menu->SetLabel(m_idBase + i, GetMRUEntryLabel(i, pathInMenu));
2074         }
2075     }
2076 }
2077
2078 void wxFileHistory::RemoveFileFromHistory(size_t i)
2079 {
2080     size_t numFiles = m_fileHistory.size();
2081     wxCHECK_RET( i < numFiles,
2082                  wxT("invalid index in wxFileHistory::RemoveFileFromHistory") );
2083
2084     // delete the element from the array
2085     m_fileHistory.RemoveAt(i);
2086     numFiles--;
2087
2088     for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2089           node;
2090           node = node->GetNext() )
2091     {
2092         wxMenu * const menu = (wxMenu *) node->GetData();
2093
2094         // shift filenames up
2095         for ( size_t j = i; j < numFiles; j++ )
2096         {
2097             menu->SetLabel(m_idBase + j, GetMRUEntryLabel(j, m_fileHistory[j]));
2098         }
2099
2100         // delete the last menu item which is unused now
2101         const wxWindowID lastItemId = m_idBase + numFiles;
2102         if ( menu->FindItem(lastItemId) )
2103             menu->Delete(lastItemId);
2104
2105         // delete the last separator too if no more files are left
2106         if ( m_fileHistory.empty() )
2107         {
2108             const wxMenuItemList::compatibility_iterator
2109                 nodeLast = menu->GetMenuItems().GetLast();
2110             if ( nodeLast )
2111             {
2112                 wxMenuItem * const lastMenuItem = nodeLast->GetData();
2113                 if ( lastMenuItem->IsSeparator() )
2114                     menu->Delete(lastMenuItem);
2115             }
2116             //else: menu is empty somehow
2117         }
2118     }
2119 }
2120
2121 void wxFileHistory::UseMenu(wxMenu *menu)
2122 {
2123     if ( !m_fileMenus.Member(menu) )
2124         m_fileMenus.Append(menu);
2125 }
2126
2127 void wxFileHistory::RemoveMenu(wxMenu *menu)
2128 {
2129     m_fileMenus.DeleteObject(menu);
2130 }
2131
2132 #if wxUSE_CONFIG
2133 void wxFileHistory::Load(const wxConfigBase& config)
2134 {
2135     m_fileHistory.Clear();
2136
2137     wxString buf;
2138     buf.Printf(wxT("file%d"), 1);
2139
2140     wxString historyFile;
2141     while ((m_fileHistory.GetCount() < m_fileMaxFiles) &&
2142            config.Read(buf, &historyFile) && !historyFile.empty())
2143     {
2144         m_fileHistory.Add(historyFile);
2145
2146         buf.Printf(wxT("file%d"), (int)m_fileHistory.GetCount()+1);
2147         historyFile = wxEmptyString;
2148     }
2149
2150     AddFilesToMenu();
2151 }
2152
2153 void wxFileHistory::Save(wxConfigBase& config)
2154 {
2155     size_t i;
2156     for (i = 0; i < m_fileMaxFiles; i++)
2157     {
2158         wxString buf;
2159         buf.Printf(wxT("file%d"), (int)i+1);
2160         if (i < m_fileHistory.GetCount())
2161             config.Write(buf, wxString(m_fileHistory[i]));
2162         else
2163             config.Write(buf, wxEmptyString);
2164     }
2165 }
2166 #endif // wxUSE_CONFIG
2167
2168 void wxFileHistory::AddFilesToMenu()
2169 {
2170     if ( m_fileHistory.empty() )
2171         return;
2172
2173     for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2174           node;
2175           node = node->GetNext() )
2176     {
2177         AddFilesToMenu((wxMenu *) node->GetData());
2178     }
2179 }
2180
2181 void wxFileHistory::AddFilesToMenu(wxMenu* menu)
2182 {
2183     if ( m_fileHistory.empty() )
2184         return;
2185
2186     if ( menu->GetMenuItemCount() )
2187         menu->AppendSeparator();
2188
2189     for ( size_t i = 0; i < m_fileHistory.GetCount(); i++ )
2190     {
2191         menu->Append(m_idBase + i, GetMRUEntryLabel(i, m_fileHistory[i]));
2192     }
2193 }
2194
2195 // ----------------------------------------------------------------------------
2196 // Permits compatibility with existing file formats and functions that
2197 // manipulate files directly
2198 // ----------------------------------------------------------------------------
2199
2200 #if wxUSE_STD_IOSTREAM
2201
2202 bool wxTransferFileToStream(const wxString& filename, wxSTD ostream& stream)
2203 {
2204     wxFFile file(filename, _T("rb"));
2205     if ( !file.IsOpened() )
2206         return false;
2207
2208     char buf[4096];
2209
2210     size_t nRead;
2211     do
2212     {
2213         nRead = file.Read(buf, WXSIZEOF(buf));
2214         if ( file.Error() )
2215             return false;
2216
2217         stream.write(buf, nRead);
2218         if ( !stream )
2219             return false;
2220     }
2221     while ( !file.Eof() );
2222
2223     return true;
2224 }
2225
2226 bool wxTransferStreamToFile(wxSTD istream& stream, const wxString& filename)
2227 {
2228     wxFFile file(filename, _T("wb"));
2229     if ( !file.IsOpened() )
2230         return false;
2231
2232     char buf[4096];
2233     do
2234     {
2235         stream.read(buf, WXSIZEOF(buf));
2236         if ( !stream.bad() ) // fail may be set on EOF, don't use operator!()
2237         {
2238             if ( !file.Write(buf, stream.gcount()) )
2239                 return false;
2240         }
2241     }
2242     while ( !stream.eof() );
2243
2244     return true;
2245 }
2246
2247 #else // !wxUSE_STD_IOSTREAM
2248
2249 bool wxTransferFileToStream(const wxString& filename, wxOutputStream& stream)
2250 {
2251     wxFFile file(filename, _T("rb"));
2252     if ( !file.IsOpened() )
2253         return false;
2254
2255     char buf[4096];
2256
2257     size_t nRead;
2258     do
2259     {
2260         nRead = file.Read(buf, WXSIZEOF(buf));
2261         if ( file.Error() )
2262             return false;
2263
2264         stream.Write(buf, nRead);
2265         if ( !stream )
2266             return false;
2267     }
2268     while ( !file.Eof() );
2269
2270     return true;
2271 }
2272
2273 bool wxTransferStreamToFile(wxInputStream& stream, const wxString& filename)
2274 {
2275     wxFFile file(filename, _T("wb"));
2276     if ( !file.IsOpened() )
2277         return false;
2278
2279     char buf[4096];
2280     for ( ;; )
2281     {
2282         stream.Read(buf, WXSIZEOF(buf));
2283
2284         const size_t nRead = stream.LastRead();
2285         if ( !nRead )
2286         {
2287             if ( stream.Eof() )
2288                 break;
2289
2290             return false;
2291         }
2292
2293         if ( !file.Write(buf, nRead) )
2294             return false;
2295     }
2296
2297     return true;
2298 }
2299
2300 #endif // wxUSE_STD_IOSTREAM/!wxUSE_STD_IOSTREAM
2301
2302 #endif // wxUSE_DOC_VIEW_ARCHITECTURE