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