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     doc->SetFilename(path);
 863     doc->SetDocumentTemplate(this);
 864     GetDocumentManager()->AddDocument(doc);
 865     doc->SetCommandProcessor(doc->OnCreateCommandProcessor());
 866
 867     if (doc->OnCreate(path, flags))
 868         return true;
 869
 870     if (GetDocumentManager()->GetDocuments().Member(doc))
 871         doc->DeleteAllViews();
 872     return false;
 873 }
 874
 875 wxView *wxDocTemplate::CreateView(wxDocument *doc, long flags)
 876 {
 877     wxScopedPtr<wxView> view(DoCreateView());
 878     if ( !view )
 879         return NULL;
 880
 881     view->SetDocument(doc);
 882     if ( !view->OnCreate(doc, flags) )
 883         return NULL;
 884
 885     return view.release();
 886 }
 887
 888 // The default (very primitive) format detection: check is the extension is
 889 // that of the template
 890 bool wxDocTemplate::FileMatchesTemplate(const wxString& path)
 891 {
 892     wxStringTokenizer parser (GetFileFilter(), wxT(";"));
 893     wxString anything = wxT ("*");
 894     while (parser.HasMoreTokens())
 895     {
 896         wxString filter = parser.GetNextToken();
 897         wxString filterExt = FindExtension (filter);
 898         if ( filter.IsSameAs (anything)    ||
 899              filterExt.IsSameAs (anything) ||
 900              filterExt.IsSameAs (FindExtension (path)) )
 901             return true;
 902     }
 903     return GetDefaultExtension().IsSameAs(FindExtension(path));
 904 }
 905
 906 wxDocument *wxDocTemplate::DoCreateDocument()
 907 {
 908     if (!m_docClassInfo)
 909         return NULL;
 910
 911     return static_cast<wxDocument *>(m_docClassInfo->CreateObject());
 912 }
 913
 914 wxView *wxDocTemplate::DoCreateView()
 915 {
 916     if (!m_viewClassInfo)
 917         return NULL;
 918
 919     return static_cast<wxView *>(m_viewClassInfo->CreateObject());
 920 }
 921
 922 // ----------------------------------------------------------------------------
 923 // wxDocManager
 924 // ----------------------------------------------------------------------------
 925
 926 BEGIN_EVENT_TABLE(wxDocManager, wxEvtHandler)
 927     EVT_MENU(wxID_OPEN, wxDocManager::OnFileOpen)
 928     EVT_MENU(wxID_CLOSE, wxDocManager::OnFileClose)
 929     EVT_MENU(wxID_CLOSE_ALL, wxDocManager::OnFileCloseAll)
 930     EVT_MENU(wxID_REVERT, wxDocManager::OnFileRevert)
 931     EVT_MENU(wxID_NEW, wxDocManager::OnFileNew)
 932     EVT_MENU(wxID_SAVE, wxDocManager::OnFileSave)
 933     EVT_MENU(wxID_SAVEAS, wxDocManager::OnFileSaveAs)
 934     EVT_MENU(wxID_UNDO, wxDocManager::OnUndo)
 935     EVT_MENU(wxID_REDO, wxDocManager::OnRedo)
 936
 937     // We don't know in advance how many items can there be in the MRU files
 938     // list so set up OnMRUFile() as a handler for all menu events and do the
 939     // check for the id of the menu item clicked inside it.
 940     EVT_MENU(wxID_ANY, wxDocManager::OnMRUFile)
 941
 942     EVT_UPDATE_UI(wxID_OPEN, wxDocManager::OnUpdateFileOpen)
 943     EVT_UPDATE_UI(wxID_CLOSE, wxDocManager::OnUpdateDisableIfNoDoc)
 944     EVT_UPDATE_UI(wxID_CLOSE_ALL, wxDocManager::OnUpdateDisableIfNoDoc)
 945     EVT_UPDATE_UI(wxID_REVERT, wxDocManager::OnUpdateFileRevert)
 946     EVT_UPDATE_UI(wxID_NEW, wxDocManager::OnUpdateFileNew)
 947     EVT_UPDATE_UI(wxID_SAVE, wxDocManager::OnUpdateFileSave)
 948     EVT_UPDATE_UI(wxID_SAVEAS, wxDocManager::OnUpdateFileSaveAs)
 949     EVT_UPDATE_UI(wxID_UNDO, wxDocManager::OnUpdateUndo)
 950     EVT_UPDATE_UI(wxID_REDO, wxDocManager::OnUpdateRedo)
 951
 952 #if wxUSE_PRINTING_ARCHITECTURE
 953     EVT_MENU(wxID_PRINT, wxDocManager::OnPrint)
 954     EVT_MENU(wxID_PREVIEW, wxDocManager::OnPreview)
 955     EVT_MENU(wxID_PRINT_SETUP, wxDocManager::OnPageSetup)
 956
 957     EVT_UPDATE_UI(wxID_PRINT, wxDocManager::OnUpdateDisableIfNoDoc)
 958     EVT_UPDATE_UI(wxID_PREVIEW, wxDocManager::OnUpdateDisableIfNoDoc)
 959     // NB: we keep "Print setup" menu item always enabled as it can be used
 960     //     even without an active document
 961 #endif // wxUSE_PRINTING_ARCHITECTURE
 962 END_EVENT_TABLE()
 963
 964 wxDocManager* wxDocManager::sm_docManager = NULL;
 965
 966 wxDocManager::wxDocManager(long WXUNUSED(flags), bool initialize)
 967 {
 968     sm_docManager = this;
 969
 970     m_defaultDocumentNameCounter = 1;
 971     m_currentView = NULL;
 972     m_maxDocsOpen = INT_MAX;
 973     m_fileHistory = NULL;
 974     if ( initialize )
 975         Initialize();
 976 }
 977
 978 wxDocManager::~wxDocManager()
 979 {
 980     Clear();
 981     delete m_fileHistory;
 982     sm_docManager = NULL;
 983 }
 984
 985 // closes the specified document
 986 bool wxDocManager::CloseDocument(wxDocument* doc, bool force)
 987 {
 988     if ( !doc->Close() && !force )
 989         return false;
 990
 991     // Implicitly deletes the document when
 992     // the last view is deleted
 993     doc->DeleteAllViews();
 994
 995     // Check we're really deleted
 996     if (m_docs.Member(doc))
 997         delete doc;
 998
 999     return true;
1000 }
1001
1002 bool wxDocManager::CloseDocuments(bool force)
1003 {
1004     wxList::compatibility_iterator node = m_docs.GetFirst();
1005     while (node)
1006     {
1007         wxDocument *doc = (wxDocument *)node->GetData();
1008         wxList::compatibility_iterator next = node->GetNext();
1009
1010         if (!CloseDocument(doc, force))
1011             return false;
1012
1013         // This assumes that documents are not connected in
1014         // any way, i.e. deleting one document does NOT
1015         // delete another.
1016         node = next;
1017     }
1018     return true;
1019 }
1020
1021 bool wxDocManager::Clear(bool force)
1022 {
1023     if (!CloseDocuments(force))
1024         return false;
1025
1026     m_currentView = NULL;
1027
1028     wxList::compatibility_iterator node = m_templates.GetFirst();
1029     while (node)
1030     {
1031         wxDocTemplate *templ = (wxDocTemplate*) node->GetData();
1032         wxList::compatibility_iterator next = node->GetNext();
1033         delete templ;
1034         node = next;
1035     }
1036     return true;
1037 }
1038
1039 bool wxDocManager::Initialize()
1040 {
1041     m_fileHistory = OnCreateFileHistory();
1042     return true;
1043 }
1044
1045 wxString wxDocManager::GetLastDirectory() const
1046 {
1047     // if we haven't determined the last used directory yet, do it now
1048     if ( m_lastDirectory.empty() )
1049     {
1050         // we're going to modify m_lastDirectory in this const method, so do it
1051         // via non-const self pointer instead of const this one
1052         wxDocManager * const self = const_cast<wxDocManager *>(this);
1053
1054         // first try to reuse the directory of the most recently opened file:
1055         // this ensures that if the user opens a file, closes the program and
1056         // runs it again the "Open file" dialog will open in the directory of
1057         // the last file he used
1058         if ( m_fileHistory && m_fileHistory->GetCount() )
1059         {
1060             const wxString lastOpened = m_fileHistory->GetHistoryFile(0);
1061             const wxFileName fn(lastOpened);
1062             if ( fn.DirExists() )
1063             {
1064                 self->m_lastDirectory = fn.GetPath();
1065             }
1066             //else: should we try the next one?
1067         }
1068         //else: no history yet
1069
1070         // if we don't have any files in the history (yet?), use the
1071         // system-dependent default location for the document files
1072         if ( m_lastDirectory.empty() )
1073         {
1074             self->m_lastDirectory = wxStandardPaths::Get().GetAppDocumentsDir();
1075         }
1076     }
1077
1078     return m_lastDirectory;
1079 }
1080
1081 wxFileHistory *wxDocManager::OnCreateFileHistory()
1082 {
1083     return new wxFileHistory;
1084 }
1085
1086 void wxDocManager::OnFileClose(wxCommandEvent& WXUNUSED(event))
1087 {
1088     wxDocument *doc = GetCurrentDocument();
1089     if (doc)
1090         CloseDocument(doc);
1091 }
1092
1093 void wxDocManager::OnFileCloseAll(wxCommandEvent& WXUNUSED(event))
1094 {
1095     CloseDocuments(false);
1096 }
1097
1098 void wxDocManager::OnFileNew(wxCommandEvent& WXUNUSED(event))
1099 {
1100     CreateNewDocument();
1101 }
1102
1103 void wxDocManager::OnFileOpen(wxCommandEvent& WXUNUSED(event))
1104 {
1105     if ( !CreateDocument("") )
1106     {
1107         OnOpenFileFailure();
1108     }
1109 }
1110
1111 void wxDocManager::OnFileRevert(wxCommandEvent& WXUNUSED(event))
1112 {
1113     wxDocument *doc = GetCurrentDocument();
1114     if (!doc)
1115         return;
1116     doc->Revert();
1117 }
1118
1119 void wxDocManager::OnFileSave(wxCommandEvent& WXUNUSED(event))
1120 {
1121     wxDocument *doc = GetCurrentDocument();
1122     if (!doc)
1123         return;
1124     doc->Save();
1125 }
1126
1127 void wxDocManager::OnFileSaveAs(wxCommandEvent& WXUNUSED(event))
1128 {
1129     wxDocument *doc = GetCurrentDocument();
1130     if (!doc)
1131         return;
1132     doc->SaveAs();
1133 }
1134
1135 void wxDocManager::OnMRUFile(wxCommandEvent& event)
1136 {
1137     // Check if the id is in the range assigned to MRU list entries.
1138     const int id = event.GetId();
1139     if ( id >= wxID_FILE1 &&
1140             id < wxID_FILE1 + static_cast<int>(m_fileHistory->GetCount()) )
1141     {
1142         DoOpenMRUFile(id - wxID_FILE1);
1143     }
1144     else
1145     {
1146         event.Skip();
1147     }
1148 }
1149
1150 void wxDocManager::DoOpenMRUFile(unsigned n)
1151 {
1152     wxString filename(GetHistoryFile(n));
1153     if ( filename.empty() )
1154         return;
1155
1156     wxString errMsg; // must contain exactly one "%s" if non-empty
1157     if ( wxFile::Exists(filename) )
1158     {
1159         // Try to open it but don't give an error if it failed: this could be
1160         // normal, e.g. because the user cancelled opening it, and we don't
1161         // have any useful information to put in the error message anyhow, so
1162         // we assume that in case of an error the appropriate message had been
1163         // already logged.
1164         (void)CreateDocument(filename, wxDOC_SILENT);
1165     }
1166     else // file doesn't exist
1167     {
1168         OnMRUFileNotExist(n, filename);
1169     }
1170 }
1171
1172 void wxDocManager::OnMRUFileNotExist(unsigned n, const wxString& filename)
1173 {
1174     // remove the file which we can't open from the MRU list
1175     RemoveFileFromHistory(n);
1176
1177     // and tell the user about it
1178     wxLogError(_("The file '%s' doesn't exist and couldn't be opened.\n"
1179                  "It has been removed from the most recently used files list."),
1180                filename);
1181 }
1182
1183 #if wxUSE_PRINTING_ARCHITECTURE
1184
1185 void wxDocManager::OnPrint(wxCommandEvent& WXUNUSED(event))
1186 {
1187     wxView *view = GetActiveView();
1188     if (!view)
1189         return;
1190
1191     wxPrintout *printout = view->OnCreatePrintout();
1192     if (printout)
1193     {
1194         wxPrintDialogData printDialogData(m_pageSetupDialogData.GetPrintData());
1195         wxPrinter printer(&printDialogData);
1196         printer.Print(view->GetFrame(), printout, true);
1197
1198         delete printout;
1199     }
1200 }
1201
1202 void wxDocManager::OnPageSetup(wxCommandEvent& WXUNUSED(event))
1203 {
1204     wxPageSetupDialog dlg(wxTheApp->GetTopWindow(), &m_pageSetupDialogData);
1205     if ( dlg.ShowModal() == wxID_OK )
1206     {
1207         m_pageSetupDialogData = dlg.GetPageSetupData();
1208     }
1209 }
1210
1211 wxPreviewFrame* wxDocManager::CreatePreviewFrame(wxPrintPreviewBase* preview,
1212                                                  wxWindow *parent,
1213                                                  const wxString& title)
1214 {
1215     return new wxPreviewFrame(preview, parent, title);
1216 }
1217
1218 void wxDocManager::OnPreview(wxCommandEvent& WXUNUSED(event))
1219 {
1220     wxBusyCursor busy;
1221     wxView *view = GetActiveView();
1222     if (!view)
1223         return;
1224
1225     wxPrintout *printout = view->OnCreatePrintout();
1226     if (printout)
1227     {
1228         wxPrintDialogData printDialogData(m_pageSetupDialogData.GetPrintData());
1229
1230         // Pass two printout objects: for preview, and possible printing.
1231         wxPrintPreviewBase *
1232             preview = new wxPrintPreview(printout,
1233                                          view->OnCreatePrintout(),
1234                                          &printDialogData);
1235         if ( !preview->IsOk() )
1236         {
1237             delete preview;
1238             wxLogError(_("Print preview creation failed."));
1239             return;
1240         }
1241
1242         wxPreviewFrame* frame = CreatePreviewFrame(preview,
1243                                                    wxTheApp->GetTopWindow(),
1244                                                    _("Print Preview"));
1245         wxCHECK_RET( frame, "should create a print preview frame" );
1246
1247         frame->Centre(wxBOTH);
1248         frame->Initialize();
1249         frame->Show(true);
1250     }
1251 }
1252 #endif // wxUSE_PRINTING_ARCHITECTURE
1253
1254 void wxDocManager::OnUndo(wxCommandEvent& event)
1255 {
1256     wxCommandProcessor * const cmdproc = GetCurrentCommandProcessor();
1257     if ( !cmdproc )
1258     {
1259         event.Skip();
1260         return;
1261     }
1262
1263     cmdproc->Undo();
1264 }
1265
1266 void wxDocManager::OnRedo(wxCommandEvent& event)
1267 {
1268     wxCommandProcessor * const cmdproc = GetCurrentCommandProcessor();
1269     if ( !cmdproc )
1270     {
1271         event.Skip();
1272         return;
1273     }
1274
1275     cmdproc->Redo();
1276 }
1277
1278 // Handlers for UI update commands
1279
1280 void wxDocManager::OnUpdateFileOpen(wxUpdateUIEvent& event)
1281 {
1282     // CreateDocument() (which is called from OnFileOpen) may succeed
1283     // only when there is at least a template:
1284     event.Enable( GetTemplates().GetCount()>0 );
1285 }
1286
1287 void wxDocManager::OnUpdateDisableIfNoDoc(wxUpdateUIEvent& event)
1288 {
1289     event.Enable( GetCurrentDocument() != NULL );
1290 }
1291
1292 void wxDocManager::OnUpdateFileRevert(wxUpdateUIEvent& event)
1293 {
1294     wxDocument* doc = GetCurrentDocument();
1295     event.Enable(doc && doc->IsModified() && doc->GetDocumentSaved());
1296 }
1297
1298 void wxDocManager::OnUpdateFileNew(wxUpdateUIEvent& event)
1299 {
1300     // CreateDocument() (which is called from OnFileNew) may succeed
1301     // only when there is at least a template:
1302     event.Enable( GetTemplates().GetCount()>0 );
1303 }
1304
1305 void wxDocManager::OnUpdateFileSave(wxUpdateUIEvent& event)
1306 {
1307     wxDocument * const doc = GetCurrentDocument();
1308     event.Enable( doc && !doc->IsChildDocument() && !doc->AlreadySaved() );
1309 }
1310
1311 void wxDocManager::OnUpdateFileSaveAs(wxUpdateUIEvent& event)
1312 {
1313     wxDocument * const doc = GetCurrentDocument();
1314     event.Enable( doc && !doc->IsChildDocument() );
1315 }
1316
1317 void wxDocManager::OnUpdateUndo(wxUpdateUIEvent& event)
1318 {
1319     wxCommandProcessor * const cmdproc = GetCurrentCommandProcessor();
1320     if ( !cmdproc )
1321     {
1322         // If we don't have any document at all, the menu item should really be
1323         // disabled.
1324         if ( !GetCurrentDocument() )
1325             event.Enable(false);
1326         else // But if we do have it, it might handle wxID_UNDO on its own
1327             event.Skip();
1328         return;
1329     }
1330     event.Enable(cmdproc->CanUndo());
1331     cmdproc->SetMenuStrings();
1332 }
1333
1334 void wxDocManager::OnUpdateRedo(wxUpdateUIEvent& event)
1335 {
1336     wxCommandProcessor * const cmdproc = GetCurrentCommandProcessor();
1337     if ( !cmdproc )
1338     {
1339         // Use same logic as in OnUpdateUndo() above.
1340         if ( !GetCurrentDocument() )
1341             event.Enable(false);
1342         else
1343             event.Skip();
1344         return;
1345     }
1346     event.Enable(cmdproc->CanRedo());
1347     cmdproc->SetMenuStrings();
1348 }
1349
1350 wxView *wxDocManager::GetActiveView() const
1351 {
1352     wxView *view = GetCurrentView();
1353
1354     if ( !view && !m_docs.empty() )
1355     {
1356         // if we have exactly one document, consider its view to be the current
1357         // one
1358         //
1359         // VZ: I'm not exactly sure why is this needed but this is how this
1360         //     code used to behave before the bug #9518 was fixed and it seems
1361         //     safer to preserve the old logic
1362         wxList::compatibility_iterator node = m_docs.GetFirst();
1363         if ( !node->GetNext() )
1364         {
1365             wxDocument *doc = static_cast<wxDocument *>(node->GetData());
1366             view = doc->GetFirstView();
1367         }
1368         //else: we have more than one document
1369     }
1370
1371     return view;
1372 }
1373
1374 bool wxDocManager::TryBefore(wxEvent& event)
1375 {
1376     wxView * const view = GetActiveView();
1377     return view && view->ProcessEventLocally(event);
1378 }
1379
1380 namespace
1381 {
1382
1383 // helper function: return only the visible templates
1384 wxDocTemplates GetVisibleTemplates(const wxList& allTemplates)
1385 {
1386     // select only the visible templates
1387     const size_t totalNumTemplates = allTemplates.GetCount();
1388     wxDocTemplates templates;
1389     if ( totalNumTemplates )
1390     {
1391         templates.reserve(totalNumTemplates);
1392
1393         for ( wxList::const_iterator i = allTemplates.begin(),
1394                                    end = allTemplates.end();
1395               i != end;
1396               ++i )
1397         {
1398             wxDocTemplate * const temp = (wxDocTemplate *)*i;
1399             if ( temp->IsVisible() )
1400                 templates.push_back(temp);
1401         }
1402     }
1403
1404     return templates;
1405 }
1406
1407 } // anonymous namespace
1408
1409 void wxDocManager::ActivateDocument(wxDocument *doc)
1410 {
1411     wxView * const view = doc->GetFirstView();
1412     if ( !view )
1413         return;
1414
1415     view->Activate(true);
1416     if ( wxWindow *win = view->GetFrame() )
1417         win->SetFocus();
1418 }
1419
1420 wxDocument *wxDocManager::CreateDocument(const wxString& pathOrig, long flags)
1421 {
1422     // this ought to be const but SelectDocumentType/Path() are not
1423     // const-correct and can't be changed as, being virtual, this risks
1424     // breaking user code overriding them
1425     wxDocTemplates templates(GetVisibleTemplates(m_templates));
1426     const size_t numTemplates = templates.size();
1427     if ( !numTemplates )
1428     {
1429         // no templates can be used, can't create document
1430         return NULL;
1431     }
1432
1433
1434     // normally user should select the template to use but wxDOC_SILENT flag we
1435     // choose one ourselves
1436     wxString path = pathOrig;   // may be modified below
1437     wxDocTemplate *temp;
1438     if ( flags & wxDOC_SILENT )
1439     {
1440         wxASSERT_MSG( !path.empty(),
1441                       "using empty path with wxDOC_SILENT doesn't make sense" );
1442
1443         temp = FindTemplateForPath(path);
1444         if ( !temp )
1445         {
1446             wxLogWarning(_("The format of file '%s' couldn't be determined."),
1447                          path);
1448         }
1449     }
1450     else // not silent, ask the user
1451     {
1452         // for the new file we need just the template, for an existing one we
1453         // need the template and the path, unless it's already specified
1454         if ( (flags & wxDOC_NEW) || !path.empty() )
1455             temp = SelectDocumentType(&templates[0], numTemplates);
1456         else
1457             temp = SelectDocumentPath(&templates[0], numTemplates, path, flags);
1458     }
1459
1460     if ( !temp )
1461         return NULL;
1462
1463     // check whether the document with this path is already opened
1464     if ( !path.empty() )
1465     {
1466         const wxFileName fn(path);
1467         for ( wxList::const_iterator i = m_docs.begin(); i != m_docs.end(); ++i )
1468         {
1469             wxDocument * const doc = (wxDocument*)*i;
1470
1471             if ( fn == doc->GetFilename() )
1472             {
1473                 // file already open, just activate it and return
1474                 ActivateDocument(doc);
1475                 return doc;
1476             }
1477         }
1478     }
1479
1480
1481     // no, we need to create a new document
1482
1483
1484     // if we've reached the max number of docs, close the first one.
1485     if ( (int)GetDocuments().GetCount() >= m_maxDocsOpen )
1486     {
1487         if ( !CloseDocument((wxDocument *)GetDocuments().GetFirst()->GetData()) )
1488         {
1489             // can't open the new document if closing the old one failed
1490             return NULL;
1491         }
1492     }
1493
1494
1495     // do create and initialize the new document finally
1496     wxDocument * const docNew = temp->CreateDocument(path, flags);
1497     if ( !docNew )
1498         return NULL;
1499
1500     docNew->SetDocumentName(temp->GetDocumentName());
1501     docNew->SetDocumentTemplate(temp);
1502
1503     wxTRY
1504     {
1505         // call the appropriate function depending on whether we're creating a
1506         // new file or opening an existing one
1507         if ( !(flags & wxDOC_NEW ? docNew->OnNewDocument()
1508                                  : docNew->OnOpenDocument(path)) )
1509         {
1510             docNew->DeleteAllViews();
1511             return NULL;
1512         }
1513     }
1514     wxCATCH_ALL( docNew->DeleteAllViews(); throw; )
1515
1516     // add the successfully opened file to MRU, but only if we're going to be
1517     // able to reopen it successfully later which requires the template for
1518     // this document to be retrievable from the file extension
1519     if ( !(flags & wxDOC_NEW) && temp->FileMatchesTemplate(path) )
1520         AddFileToHistory(path);
1521
1522     // at least under Mac (where views are top level windows) it seems to be
1523     // necessary to manually activate the new document to bring it to the
1524     // forefront -- and it shouldn't hurt doing this under the other platforms
1525     ActivateDocument(docNew);
1526
1527     return docNew;
1528 }
1529
1530 wxView *wxDocManager::CreateView(wxDocument *doc, long flags)
1531 {
1532     wxDocTemplates templates(GetVisibleTemplates(m_templates));
1533     const size_t numTemplates = templates.size();
1534
1535     if ( numTemplates == 0 )
1536         return NULL;
1537
1538     wxDocTemplate * const
1539     temp = numTemplates == 1 ? templates[0]
1540                              : SelectViewType(&templates[0], numTemplates);
1541
1542     if ( !temp )
1543         return NULL;
1544
1545     wxView *view = temp->CreateView(doc, flags);
1546     if ( view )
1547         view->SetViewName(temp->GetViewName());
1548     return view;
1549 }
1550
1551 // Not yet implemented
1552 void
1553 wxDocManager::DeleteTemplate(wxDocTemplate *WXUNUSED(temp), long WXUNUSED(flags))
1554 {
1555 }
1556
1557 // Not yet implemented
1558 bool wxDocManager::FlushDoc(wxDocument *WXUNUSED(doc))
1559 {
1560     return false;
1561 }
1562
1563 wxDocument *wxDocManager::GetCurrentDocument() const
1564 {
1565     wxView * const view = GetActiveView();
1566     return view ? view->GetDocument() : NULL;
1567 }
1568
1569 wxCommandProcessor *wxDocManager::GetCurrentCommandProcessor() const
1570 {
1571     wxDocument * const doc = GetCurrentDocument();
1572     return doc ? doc->GetCommandProcessor() : NULL;
1573 }
1574
1575 // Make a default name for a new document
1576 #if WXWIN_COMPATIBILITY_2_8
1577 bool wxDocManager::MakeDefaultName(wxString& WXUNUSED(name))
1578 {
1579     // we consider that this function can only be overridden by the user code,
1580     // not called by it as it only makes sense to call it internally, so we
1581     // don't bother to return anything from here
1582     return false;
1583 }
1584 #endif // WXWIN_COMPATIBILITY_2_8
1585
1586 wxString wxDocManager::MakeNewDocumentName()
1587 {
1588     wxString name;
1589
1590 #if WXWIN_COMPATIBILITY_2_8
1591     if ( !MakeDefaultName(name) )
1592 #endif // WXWIN_COMPATIBILITY_2_8
1593     {
1594         name.Printf(_("unnamed%d"), m_defaultDocumentNameCounter);
1595         m_defaultDocumentNameCounter++;
1596     }
1597
1598     return name;
1599 }
1600
1601 // Make a frame title (override this to do something different)
1602 // If docName is empty, a document is not currently active.
1603 wxString wxDocManager::MakeFrameTitle(wxDocument* doc)
1604 {
1605     wxString appName = wxTheApp->GetAppDisplayName();
1606     wxString title;
1607     if (!doc)
1608         title = appName;
1609     else
1610     {
1611         wxString docName = doc->GetUserReadableName();
1612         title = docName + wxString(_(" - ")) + appName;
1613     }
1614     return title;
1615 }
1616
1617
1618 // Not yet implemented
1619 wxDocTemplate *wxDocManager::MatchTemplate(const wxString& WXUNUSED(path))
1620 {
1621     return NULL;
1622 }
1623
1624 // File history management
1625 void wxDocManager::AddFileToHistory(const wxString& file)
1626 {
1627     if (m_fileHistory)
1628         m_fileHistory->AddFileToHistory(file);
1629 }
1630
1631 void wxDocManager::RemoveFileFromHistory(size_t i)
1632 {
1633     if (m_fileHistory)
1634         m_fileHistory->RemoveFileFromHistory(i);
1635 }
1636
1637 wxString wxDocManager::GetHistoryFile(size_t i) const
1638 {
1639     wxString histFile;
1640
1641     if (m_fileHistory)
1642         histFile = m_fileHistory->GetHistoryFile(i);
1643
1644     return histFile;
1645 }
1646
1647 void wxDocManager::FileHistoryUseMenu(wxMenu *menu)
1648 {
1649     if (m_fileHistory)
1650         m_fileHistory->UseMenu(menu);
1651 }
1652
1653 void wxDocManager::FileHistoryRemoveMenu(wxMenu *menu)
1654 {
1655     if (m_fileHistory)
1656         m_fileHistory->RemoveMenu(menu);
1657 }
1658
1659 #if wxUSE_CONFIG
1660 void wxDocManager::FileHistoryLoad(const wxConfigBase& config)
1661 {
1662     if (m_fileHistory)
1663         m_fileHistory->Load(config);
1664 }
1665
1666 void wxDocManager::FileHistorySave(wxConfigBase& config)
1667 {
1668     if (m_fileHistory)
1669         m_fileHistory->Save(config);
1670 }
1671 #endif
1672
1673 void wxDocManager::FileHistoryAddFilesToMenu(wxMenu* menu)
1674 {
1675     if (m_fileHistory)
1676         m_fileHistory->AddFilesToMenu(menu);
1677 }
1678
1679 void wxDocManager::FileHistoryAddFilesToMenu()
1680 {
1681     if (m_fileHistory)
1682         m_fileHistory->AddFilesToMenu();
1683 }
1684
1685 size_t wxDocManager::GetHistoryFilesCount() const
1686 {
1687     return m_fileHistory ? m_fileHistory->GetCount() : 0;
1688 }
1689
1690
1691 // Find out the document template via matching in the document file format
1692 // against that of the template
1693 wxDocTemplate *wxDocManager::FindTemplateForPath(const wxString& path)
1694 {
1695     wxDocTemplate *theTemplate = NULL;
1696
1697     // Find the template which this extension corresponds to
1698     for (size_t i = 0; i < m_templates.GetCount(); i++)
1699     {
1700         wxDocTemplate *temp = (wxDocTemplate *)m_templates.Item(i)->GetData();
1701         if ( temp->FileMatchesTemplate(path) )
1702         {
1703             theTemplate = temp;
1704             break;
1705         }
1706     }
1707     return theTemplate;
1708 }
1709
1710 // Prompts user to open a file, using file specs in templates.
1711 // Must extend the file selector dialog or implement own; OR
1712 // match the extension to the template extension.
1713
1714 wxDocTemplate *wxDocManager::SelectDocumentPath(wxDocTemplate **templates,
1715                                                 int noTemplates,
1716                                                 wxString& path,
1717                                                 long WXUNUSED(flags),
1718                                                 bool WXUNUSED(save))
1719 {
1720 #ifdef wxHAS_MULTIPLE_FILEDLG_FILTERS
1721     wxString descrBuf;
1722
1723     for (int i = 0; i < noTemplates; i++)
1724     {
1725         if (templates[i]->IsVisible())
1726         {
1727             // add a '|' to separate this filter from the previous one
1728             if ( !descrBuf.empty() )
1729                 descrBuf << wxT('|');
1730
1731             descrBuf << templates[i]->GetDescription()
1732                 << wxT(" (") << templates[i]->GetFileFilter() << wxT(") |")
1733                 << templates[i]->GetFileFilter();
1734         }
1735     }
1736 #else
1737     wxString descrBuf = wxT("*.*");
1738     wxUnusedVar(noTemplates);
1739 #endif
1740
1741     int FilterIndex = -1;
1742
1743     wxString pathTmp = wxFileSelectorEx(_("Open File"),
1744                                         GetLastDirectory(),
1745                                         wxEmptyString,
1746                                         &FilterIndex,
1747                                         descrBuf,
1748                                         wxFD_OPEN | wxFD_FILE_MUST_EXIST);
1749
1750     wxDocTemplate *theTemplate = NULL;
1751     if (!pathTmp.empty())
1752     {
1753         if (!wxFileExists(pathTmp))
1754         {
1755             wxString msgTitle;
1756             if (!wxTheApp->GetAppDisplayName().empty())
1757                 msgTitle = wxTheApp->GetAppDisplayName();
1758             else
1759                 msgTitle = wxString(_("File error"));
1760
1761             wxMessageBox(_("Sorry, could not open this file."),
1762                          msgTitle,
1763                          wxOK | wxICON_EXCLAMATION | wxCENTRE);
1764
1765             path = wxEmptyString;
1766             return NULL;
1767         }
1768
1769         SetLastDirectory(wxPathOnly(pathTmp));
1770
1771         path = pathTmp;
1772
1773         // first choose the template using the extension, if this fails (i.e.
1774         // wxFileSelectorEx() didn't fill it), then use the path
1775         if ( FilterIndex != -1 )
1776             theTemplate = templates[FilterIndex];
1777         if ( !theTemplate )
1778             theTemplate = FindTemplateForPath(path);
1779         if ( !theTemplate )
1780         {
1781             // Since we do not add files with non-default extensions to the
1782             // file history this can only happen if the application changes the
1783             // allowed templates in runtime.
1784             wxMessageBox(_("Sorry, the format for this file is unknown."),
1785                          _("Open File"),
1786                          wxOK | wxICON_EXCLAMATION | wxCENTRE);
1787         }
1788     }
1789     else
1790     {
1791         path.clear();
1792     }
1793
1794     return theTemplate;
1795 }
1796
1797 wxDocTemplate *wxDocManager::SelectDocumentType(wxDocTemplate **templates,
1798                                                 int noTemplates, bool sort)
1799 {
1800     wxArrayString strings;
1801     wxScopedArray<wxDocTemplate *> data(new wxDocTemplate *[noTemplates]);
1802     int i;
1803     int n = 0;
1804
1805     for (i = 0; i < noTemplates; i++)
1806     {
1807         if (templates[i]->IsVisible())
1808         {
1809             int j;
1810             bool want = true;
1811             for (j = 0; j < n; j++)
1812             {
1813                 //filter out NOT unique documents + view combinations
1814                 if ( templates[i]->m_docTypeName == data[j]->m_docTypeName &&
1815                      templates[i]->m_viewTypeName == data[j]->m_viewTypeName
1816                    )
1817                     want = false;
1818             }
1819
1820             if ( want )
1821             {
1822                 strings.Add(templates[i]->m_description);
1823
1824                 data[n] = templates[i];
1825                 n ++;
1826             }
1827         }
1828     }  // for
1829
1830     if (sort)
1831     {
1832         strings.Sort(); // ascending sort
1833         // Yes, this will be slow, but template lists
1834         // are typically short.
1835         int j;
1836         n = strings.Count();
1837         for (i = 0; i < n; i++)
1838         {
1839             for (j = 0; j < noTemplates; j++)
1840             {
1841                 if (strings[i] == templates[j]->m_description)
1842                     data[i] = templates[j];
1843             }
1844         }
1845     }
1846
1847     wxDocTemplate *theTemplate;
1848
1849     switch ( n )
1850     {
1851         case 0:
1852             // no visible templates, hence nothing to choose from
1853             theTemplate = NULL;
1854             break;
1855
1856         case 1:
1857             // don't propose the user to choose if he has no choice
1858             theTemplate = data[0];
1859             break;
1860
1861         default:
1862             // propose the user to choose one of several
1863             theTemplate = (wxDocTemplate *)wxGetSingleChoiceData
1864                           (
1865                             _("Select a document template"),
1866                             _("Templates"),
1867                             strings,
1868                             (void **)data.get()
1869                           );
1870     }
1871
1872     return theTemplate;
1873 }
1874
1875 wxDocTemplate *wxDocManager::SelectViewType(wxDocTemplate **templates,
1876                                             int noTemplates, bool sort)
1877 {
1878     wxArrayString strings;
1879     wxScopedArray<wxDocTemplate *> data(new wxDocTemplate *[noTemplates]);
1880     int i;
1881     int n = 0;
1882
1883     for (i = 0; i < noTemplates; i++)
1884     {
1885         wxDocTemplate *templ = templates[i];
1886         if ( templ->IsVisible() && !templ->GetViewName().empty() )
1887         {
1888             int j;
1889             bool want = true;
1890             for (j = 0; j < n; j++)
1891             {
1892                 //filter out NOT unique views
1893                 if ( templates[i]->m_viewTypeName == data[j]->m_viewTypeName )
1894                     want = false;
1895             }
1896
1897             if ( want )
1898             {
1899                 strings.Add(templ->m_viewTypeName);
1900                 data[n] = templ;
1901                 n ++;
1902             }
1903         }
1904     }
1905
1906     if (sort)
1907     {
1908         strings.Sort(); // ascending sort
1909         // Yes, this will be slow, but template lists
1910         // are typically short.
1911         int j;
1912         n = strings.Count();
1913         for (i = 0; i < n; i++)
1914         {
1915             for (j = 0; j < noTemplates; j++)
1916             {
1917                 if (strings[i] == templates[j]->m_viewTypeName)
1918                     data[i] = templates[j];
1919             }
1920         }
1921     }
1922
1923     wxDocTemplate *theTemplate;
1924
1925     // the same logic as above
1926     switch ( n )
1927     {
1928         case 0:
1929             theTemplate = NULL;
1930             break;
1931
1932         case 1:
1933             theTemplate = data[0];
1934             break;
1935
1936         default:
1937             theTemplate = (wxDocTemplate *)wxGetSingleChoiceData
1938                           (
1939                             _("Select a document view"),
1940                             _("Views"),
1941                             strings,
1942                             (void **)data.get()
1943                           );
1944
1945     }
1946
1947     return theTemplate;
1948 }
1949
1950 void wxDocManager::AssociateTemplate(wxDocTemplate *temp)
1951 {
1952     if (!m_templates.Member(temp))
1953         m_templates.Append(temp);
1954 }
1955
1956 void wxDocManager::DisassociateTemplate(wxDocTemplate *temp)
1957 {
1958     m_templates.DeleteObject(temp);
1959 }
1960
1961 wxDocTemplate* wxDocManager::FindTemplate(const wxClassInfo* classinfo)
1962 {
1963    for ( wxList::compatibility_iterator node = m_templates.GetFirst();
1964          node;
1965          node = node->GetNext() )
1966    {
1967       wxDocTemplate* t = wxStaticCast(node->GetData(), wxDocTemplate);
1968       if ( t->GetDocClassInfo() == classinfo )
1969          return t;
1970    }
1971
1972    return NULL;
1973 }
1974
1975 // Add and remove a document from the manager's list
1976 void wxDocManager::AddDocument(wxDocument *doc)
1977 {
1978     if (!m_docs.Member(doc))
1979         m_docs.Append(doc);
1980 }
1981
1982 void wxDocManager::RemoveDocument(wxDocument *doc)
1983 {
1984     m_docs.DeleteObject(doc);
1985 }
1986
1987 // Views or windows should inform the document manager
1988 // when a view is going in or out of focus
1989 void wxDocManager::ActivateView(wxView *view, bool activate)
1990 {
1991     if ( activate )
1992     {
1993         m_currentView = view;
1994     }
1995     else // deactivate
1996     {
1997         if ( m_currentView == view )
1998         {
1999             // don't keep stale pointer
2000             m_currentView = NULL;
2001         }
2002     }
2003 }
2004
2005 // ----------------------------------------------------------------------------
2006 // wxDocChildFrameAnyBase
2007 // ----------------------------------------------------------------------------
2008
2009 bool wxDocChildFrameAnyBase::CloseView(wxCloseEvent& event)
2010 {
2011     if ( m_childView )
2012     {
2013         // notice that we must call wxView::Close() and OnClose() called from
2014         // it in any case, even if we know that we are going to close anyhow
2015         if ( !m_childView->Close(false) && event.CanVeto() )
2016         {
2017             event.Veto();
2018             return false;
2019         }
2020
2021         m_childView->Activate(false);
2022
2023         // it is important to reset m_childView frame pointer to NULL before
2024         // deleting it because while normally it is the frame which deletes the
2025         // view when it's closed, the view also closes the frame if it is
2026         // deleted directly not by us as indicated by its doc child frame
2027         // pointer still being set
2028         m_childView->SetDocChildFrame(NULL);
2029         wxDELETE(m_childView);
2030     }
2031
2032     m_childDocument = NULL;
2033
2034     return true;
2035 }
2036
2037 // ----------------------------------------------------------------------------
2038 // wxDocParentFrameAnyBase
2039 // ----------------------------------------------------------------------------
2040
2041 #if wxUSE_PRINTING_ARCHITECTURE
2042
2043 namespace
2044 {
2045
2046 wxString GetAppropriateTitle(const wxView *view, const wxString& titleGiven)
2047 {
2048     wxString title(titleGiven);
2049     if ( title.empty() )
2050     {
2051         if ( view && view->GetDocument() )
2052             title = view->GetDocument()->GetUserReadableName();
2053         else
2054             title = _("Printout");
2055     }
2056
2057     return title;
2058 }
2059
2060 } // anonymous namespace
2061
2062 wxDocPrintout::wxDocPrintout(wxView *view, const wxString& title)
2063              : wxPrintout(GetAppropriateTitle(view, title))
2064 {
2065     m_printoutView = view;
2066 }
2067
2068 bool wxDocPrintout::OnPrintPage(int WXUNUSED(page))
2069 {
2070     wxDC *dc = GetDC();
2071
2072     // Get the logical pixels per inch of screen and printer
2073     int ppiScreenX, ppiScreenY;
2074     GetPPIScreen(&ppiScreenX, &ppiScreenY);
2075     wxUnusedVar(ppiScreenY);
2076     int ppiPrinterX, ppiPrinterY;
2077     GetPPIPrinter(&ppiPrinterX, &ppiPrinterY);
2078     wxUnusedVar(ppiPrinterY);
2079
2080     // This scales the DC so that the printout roughly represents the
2081     // the screen scaling. The text point size _should_ be the right size
2082     // but in fact is too small for some reason. This is a detail that will
2083     // need to be addressed at some point but can be fudged for the
2084     // moment.
2085     float scale = (float)((float)ppiPrinterX/(float)ppiScreenX);
2086
2087     // Now we have to check in case our real page size is reduced
2088     // (e.g. because we're drawing to a print preview memory DC)
2089     int pageWidth, pageHeight;
2090     int w, h;
2091     dc->GetSize(&w, &h);
2092     GetPageSizePixels(&pageWidth, &pageHeight);
2093     wxUnusedVar(pageHeight);
2094
2095     // If printer pageWidth == current DC width, then this doesn't
2096     // change. But w might be the preview bitmap width, so scale down.
2097     float overallScale = scale * (float)(w/(float)pageWidth);
2098     dc->SetUserScale(overallScale, overallScale);
2099
2100     if (m_printoutView)
2101     {
2102         m_printoutView->OnDraw(dc);
2103     }
2104     return true;
2105 }
2106
2107 bool wxDocPrintout::HasPage(int pageNum)
2108 {
2109     return (pageNum == 1);
2110 }
2111
2112 bool wxDocPrintout::OnBeginDocument(int startPage, int endPage)
2113 {
2114     if (!wxPrintout::OnBeginDocument(startPage, endPage))
2115         return false;
2116
2117     return true;
2118 }
2119
2120 void wxDocPrintout::GetPageInfo(int *minPage, int *maxPage,
2121                                 int *selPageFrom, int *selPageTo)
2122 {
2123     *minPage = 1;
2124     *maxPage = 1;
2125     *selPageFrom = 1;
2126     *selPageTo = 1;
2127 }
2128
2129 #endif // wxUSE_PRINTING_ARCHITECTURE
2130
2131 // ----------------------------------------------------------------------------
2132 // Permits compatibility with existing file formats and functions that
2133 // manipulate files directly
2134 // ----------------------------------------------------------------------------
2135
2136 #if wxUSE_STD_IOSTREAM
2137
2138 bool wxTransferFileToStream(const wxString& filename, wxSTD ostream& stream)
2139 {
2140 #if wxUSE_FFILE
2141     wxFFile file(filename, wxT("rb"));
2142 #elif wxUSE_FILE
2143     wxFile file(filename, wxFile::read);
2144 #endif
2145     if ( !file.IsOpened() )
2146         return false;
2147
2148     char buf[4096];
2149
2150     size_t nRead;
2151     do
2152     {
2153         nRead = file.Read(buf, WXSIZEOF(buf));
2154         if ( file.Error() )
2155             return false;
2156
2157         stream.write(buf, nRead);
2158         if ( !stream )
2159             return false;
2160     }
2161     while ( !file.Eof() );
2162
2163     return true;
2164 }
2165
2166 bool wxTransferStreamToFile(wxSTD istream& stream, const wxString& filename)
2167 {
2168 #if wxUSE_FFILE
2169     wxFFile file(filename, wxT("wb"));
2170 #elif wxUSE_FILE
2171     wxFile file(filename, wxFile::write);
2172 #endif
2173     if ( !file.IsOpened() )
2174         return false;
2175
2176     char buf[4096];
2177     do
2178     {
2179         stream.read(buf, WXSIZEOF(buf));
2180         if ( !stream.bad() ) // fail may be set on EOF, don't use operator!()
2181         {
2182             if ( !file.Write(buf, stream.gcount()) )
2183                 return false;
2184         }
2185     }
2186     while ( !stream.eof() );
2187
2188     return true;
2189 }
2190
2191 #else // !wxUSE_STD_IOSTREAM
2192
2193 bool wxTransferFileToStream(const wxString& filename, wxOutputStream& stream)
2194 {
2195 #if wxUSE_FFILE
2196     wxFFile file(filename, wxT("rb"));
2197 #elif wxUSE_FILE
2198     wxFile file(filename, wxFile::read);
2199 #endif
2200     if ( !file.IsOpened() )
2201         return false;
2202
2203     char buf[4096];
2204
2205     size_t nRead;
2206     do
2207     {
2208         nRead = file.Read(buf, WXSIZEOF(buf));
2209         if ( file.Error() )
2210             return false;
2211
2212         stream.Write(buf, nRead);
2213         if ( !stream )
2214             return false;
2215     }
2216     while ( !file.Eof() );
2217
2218     return true;
2219 }
2220
2221 bool wxTransferStreamToFile(wxInputStream& stream, const wxString& filename)
2222 {
2223 #if wxUSE_FFILE
2224     wxFFile file(filename, wxT("wb"));
2225 #elif wxUSE_FILE
2226     wxFile file(filename, wxFile::write);
2227 #endif
2228     if ( !file.IsOpened() )
2229         return false;
2230
2231     char buf[4096];
2232     for ( ;; )
2233     {
2234         stream.Read(buf, WXSIZEOF(buf));
2235
2236         const size_t nRead = stream.LastRead();
2237         if ( !nRead )
2238         {
2239             if ( stream.Eof() )
2240                 break;
2241
2242             return false;
2243         }
2244
2245         if ( !file.Write(buf, nRead) )
2246             return false;
2247     }
2248
2249     return true;
2250 }
2251
2252 #endif // wxUSE_STD_IOSTREAM/!wxUSE_STD_IOSTREAM
2253
2254 #endif // wxUSE_DOC_VIEW_ARCHITECTURE