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/scopeguard.h"
  64 #include "wx/except.h"
  65
  66 #if wxUSE_STD_IOSTREAM
  67     #include "wx/ioswrap.h"
  68     #include "wx/beforestd.h"
  69     #if wxUSE_IOSTREAMH
  70         #include <fstream.h>
  71     #else
  72         #include <fstream>
  73     #endif
  74     #include "wx/afterstd.h"
  75 #else
  76     #include "wx/wfstream.h"
  77 #endif
  78
  79 // ----------------------------------------------------------------------------
  80 // wxWidgets macros
  81 // ----------------------------------------------------------------------------
  82
  83 IMPLEMENT_ABSTRACT_CLASS(wxDocument, wxEvtHandler)
  84 IMPLEMENT_ABSTRACT_CLASS(wxView, wxEvtHandler)
  85 IMPLEMENT_ABSTRACT_CLASS(wxDocTemplate, wxObject)
  86 IMPLEMENT_DYNAMIC_CLASS(wxDocManager, wxEvtHandler)
  87 IMPLEMENT_CLASS(wxDocChildFrame, wxFrame)
  88 IMPLEMENT_CLASS(wxDocParentFrame, wxFrame)
  89
  90 #if wxUSE_PRINTING_ARCHITECTURE
  91     IMPLEMENT_DYNAMIC_CLASS(wxDocPrintout, wxPrintout)
  92 #endif
  93
  94 // ============================================================================
  95 // implementation
  96 // ============================================================================
  97
  98 // ----------------------------------------------------------------------------
  99 // private helpers
 100 // ----------------------------------------------------------------------------
 101
 102 namespace
 103 {
 104
 105 wxString FindExtension(const wxString& path)
 106 {
 107     wxString ext;
 108     wxFileName::SplitPath(path, NULL, NULL, &ext);
 109
 110     // VZ: extensions are considered not case sensitive - is this really a good
 111     //     idea?
 112     return ext.MakeLower();
 113 }
 114
 115 } // anonymous namespace
 116
 117 // ----------------------------------------------------------------------------
 118 // Definition of wxDocument
 119 // ----------------------------------------------------------------------------
 120
 121 wxDocument::wxDocument(wxDocument *parent)
 122 {
 123     m_documentModified = false;
 124     m_documentTemplate = NULL;
 125
 126     m_documentParent = parent;
 127     if ( parent )
 128         parent->m_childDocuments.push_back(this);
 129
 130     m_commandProcessor = NULL;
 131     m_savedYet = false;
 132 }
 133
 134 bool wxDocument::DeleteContents()
 135 {
 136     return true;
 137 }
 138
 139 wxDocument::~wxDocument()
 140 {
 141     delete m_commandProcessor;
 142
 143     if (GetDocumentManager())
 144         GetDocumentManager()->RemoveDocument(this);
 145
 146     if ( m_documentParent )
 147         m_documentParent->m_childDocuments.remove(this);
 148
 149     // Not safe to do here, since it'll invoke virtual view functions
 150     // expecting to see valid derived objects: and by the time we get here,
 151     // we've called destructors higher up.
 152     //DeleteAllViews();
 153 }
 154
 155 bool wxDocument::Close()
 156 {
 157     if ( !OnSaveModified() )
 158         return false;
 159
 160     // When the parent document closes, its children must be closed as well as
 161     // they can't exist without the parent.
 162
 163     // As usual, first check if all children can be closed.
 164     DocsList::const_iterator it = m_childDocuments.begin();
 165     for ( DocsList::const_iterator end = m_childDocuments.end(); it != end; ++it )
 166     {
 167         if ( !(*it)->OnSaveModified() )
 168         {
 169             // Leave the parent document opened if a child can't close.
 170             return false;
 171         }
 172     }
 173
 174     // Now that they all did, do close them: as m_childDocuments is modified as
 175     // we iterate over it, don't use the usual for-style iteration here.
 176     while ( !m_childDocuments.empty() )
 177     {
 178         wxDocument * const childDoc = m_childDocuments.front();
 179
 180         // This will call OnSaveModified() once again but it shouldn't do
 181         // anything as the document was just saved or marked as not needing to
 182         // be saved by the call to OnSaveModified() that returned true above.
 183         if ( !childDoc->Close() )
 184         {
 185             wxFAIL_MSG( "Closing the child document unexpectedly failed "
 186                         "after its OnSaveModified() returned true" );
 187         }
 188
 189         // Delete the child document by deleting all its views.
 190         childDoc->DeleteAllViews();
 191     }
 192
 193
 194     return OnCloseDocument();
 195 }
 196
 197 bool wxDocument::OnCloseDocument()
 198 {
 199     // Tell all views that we're about to close
 200     NotifyClosing();
 201     DeleteContents();
 202     Modify(false);
 203     return true;
 204 }
 205
 206 // Note that this implicitly deletes the document when the last view is
 207 // deleted.
 208 bool wxDocument::DeleteAllViews()
 209 {
 210     wxDocManager* manager = GetDocumentManager();
 211
 212     // first check if all views agree to be closed
 213     const wxList::iterator end = m_documentViews.end();
 214     for ( wxList::iterator i = m_documentViews.begin(); i != end; ++i )
 215     {
 216         wxView *view = (wxView *)*i;
 217         if ( !view->Close() )
 218             return false;
 219     }
 220
 221     // all views agreed to close, now do close them
 222     if ( m_documentViews.empty() )
 223     {
 224         // normally the document would be implicitly deleted when the last view
 225         // is, but if don't have any views, do it here instead
 226         if ( manager && manager->GetDocuments().Member(this) )
 227             delete this;
 228     }
 229     else // have views
 230     {
 231         // as we delete elements we iterate over, don't use the usual "from
 232         // begin to end" loop
 233         for ( ;; )
 234         {
 235             wxView *view = (wxView *)*m_documentViews.begin();
 236
 237             bool isLastOne = m_documentViews.size() == 1;
 238
 239             // this always deletes the node implicitly and if this is the last
 240             // view also deletes this object itself (also implicitly, great),
 241             // so we can't test for m_documentViews.empty() after calling this!
 242             delete view;
 243
 244             if ( isLastOne )
 245                 break;
 246         }
 247     }
 248
 249     return true;
 250 }
 251
 252 wxView *wxDocument::GetFirstView() const
 253 {
 254     if ( m_documentViews.empty() )
 255         return NULL;
 256
 257     return static_cast<wxView *>(m_documentViews.GetFirst()->GetData());
 258 }
 259
 260 void wxDocument::Modify(bool mod)
 261 {
 262     if (mod != m_documentModified)
 263     {
 264         m_documentModified = mod;
 265
 266         // Allow views to append asterix to the title
 267         wxView* view = GetFirstView();
 268         if (view) view->OnChangeFilename();
 269     }
 270 }
 271
 272 wxDocManager *wxDocument::GetDocumentManager() const
 273 {
 274     // For child documents we use the same document manager as the parent, even
 275     // though we don't have our own template (as children are not opened/saved
 276     // directly).
 277     if ( m_documentParent )
 278         return m_documentParent->GetDocumentManager();
 279
 280     return m_documentTemplate ? m_documentTemplate->GetDocumentManager() : NULL;
 281 }
 282
 283 bool wxDocument::OnNewDocument()
 284 {
 285     // notice that there is no need to neither reset nor even check the
 286     // modified flag here as the document itself is a new object (this is only
 287     // called from CreateDocument()) and so it shouldn't be saved anyhow even
 288     // if it is modified -- this could happen if the user code creates
 289     // documents pre-filled with some user-entered (and which hence must not be
 290     // lost) information
 291
 292     SetDocumentSaved(false);
 293
 294     const wxString name = GetDocumentManager()->MakeNewDocumentName();
 295     SetTitle(name);
 296     SetFilename(name, true);
 297
 298     return true;
 299 }
 300
 301 bool wxDocument::Save()
 302 {
 303     if ( AlreadySaved() )
 304         return true;
 305
 306     if ( m_documentFile.empty() || !m_savedYet )
 307         return SaveAs();
 308
 309     return OnSaveDocument(m_documentFile);
 310 }
 311
 312 bool wxDocument::SaveAs()
 313 {
 314     wxDocTemplate *docTemplate = GetDocumentTemplate();
 315     if (!docTemplate)
 316         return false;
 317
 318 #ifdef wxHAS_MULTIPLE_FILEDLG_FILTERS
 319     wxString filter = docTemplate->GetDescription() + wxT(" (") +
 320         docTemplate->GetFileFilter() + wxT(")|") +
 321         docTemplate->GetFileFilter();
 322
 323     // Now see if there are some other template with identical view and document
 324     // classes, whose filters may also be used.
 325     if (docTemplate->GetViewClassInfo() && docTemplate->GetDocClassInfo())
 326     {
 327         wxList::compatibility_iterator
 328             node = docTemplate->GetDocumentManager()->GetTemplates().GetFirst();
 329         while (node)
 330         {
 331             wxDocTemplate *t = (wxDocTemplate*) node->GetData();
 332
 333             if (t->IsVisible() && t != docTemplate &&
 334                 t->GetViewClassInfo() == docTemplate->GetViewClassInfo() &&
 335                 t->GetDocClassInfo() == docTemplate->GetDocClassInfo())
 336             {
 337                 // add a '|' to separate this filter from the previous one
 338                 if ( !filter.empty() )
 339                     filter << wxT('|');
 340
 341                 filter << t->GetDescription()
 342                        << wxT(" (") << t->GetFileFilter() << wxT(") |")
 343                        << t->GetFileFilter();
 344             }
 345
 346             node = node->GetNext();
 347         }
 348     }
 349 #else
 350     wxString filter = docTemplate->GetFileFilter() ;
 351 #endif
 352
 353     wxString defaultDir = docTemplate->GetDirectory();
 354     if ( defaultDir.empty() )
 355     {
 356         defaultDir = wxPathOnly(GetFilename());
 357         if ( defaultDir.empty() )
 358             defaultDir = GetDocumentManager()->GetLastDirectory();
 359     }
 360
 361     wxString fileName = wxFileSelector(_("Save As"),
 362             defaultDir,
 363             wxFileNameFromPath(GetFilename()),
 364             docTemplate->GetDefaultExtension(),
 365             filter,
 366             wxFD_SAVE | wxFD_OVERWRITE_PROMPT,
 367             GetDocumentWindow());
 368
 369     if (fileName.empty())
 370         return false; // cancelled by user
 371
 372     // Files that were not saved correctly are not added to the FileHistory.
 373     if (!OnSaveDocument(fileName))
 374         return false;
 375
 376     SetTitle(wxFileNameFromPath(fileName));
 377     SetFilename(fileName, true);    // will call OnChangeFileName automatically
 378
 379     // A file that doesn't use the default extension of its document template
 380     // cannot be opened via the FileHistory, so we do not add it.
 381     if (docTemplate->FileMatchesTemplate(fileName))
 382     {
 383         GetDocumentManager()->AddFileToHistory(fileName);
 384     }
 385     //else: the user will probably not be able to open the file again, so we
 386     //      could warn about the wrong file-extension here
 387
 388     return true;
 389 }
 390
 391 bool wxDocument::OnSaveDocument(const wxString& file)
 392 {
 393     if ( !file )
 394         return false;
 395
 396     if ( !DoSaveDocument(file) )
 397         return false;
 398
 399     if ( m_commandProcessor )
 400         m_commandProcessor->MarkAsSaved();
 401
 402     Modify(false);
 403     SetFilename(file);
 404     SetDocumentSaved(true);
 405 #if defined( __WXOSX_MAC__ ) && wxOSX_USE_CARBON
 406     wxFileName fn(file) ;
 407     fn.MacSetDefaultTypeAndCreator() ;
 408 #endif
 409     return true;
 410 }
 411
 412 bool wxDocument::OnOpenDocument(const wxString& file)
 413 {
 414     // notice that there is no need to check the modified flag here for the
 415     // reasons explained in OnNewDocument()
 416
 417     if ( !DoOpenDocument(file) )
 418         return false;
 419
 420     SetFilename(file, true);
 421
 422     // stretching the logic a little this does make sense because the document
 423     // had been saved into the file we just loaded it from, it just could have
 424     // happened during a previous program execution, it's just that the name of
 425     // this method is a bit unfortunate, it should probably have been called
 426     // HasAssociatedFileName()
 427     SetDocumentSaved(true);
 428
 429     UpdateAllViews();
 430
 431     return true;
 432 }
 433
 434 #if wxUSE_STD_IOSTREAM
 435 wxSTD istream& wxDocument::LoadObject(wxSTD istream& stream)
 436 #else
 437 wxInputStream& wxDocument::LoadObject(wxInputStream& stream)
 438 #endif
 439 {
 440     return stream;
 441 }
 442
 443 #if wxUSE_STD_IOSTREAM
 444 wxSTD ostream& wxDocument::SaveObject(wxSTD ostream& stream)
 445 #else
 446 wxOutputStream& wxDocument::SaveObject(wxOutputStream& stream)
 447 #endif
 448 {
 449     return stream;
 450 }
 451
 452 bool wxDocument::Revert()
 453 {
 454     if ( wxMessageBox
 455          (
 456             _("Discard changes and reload the last saved version?"),
 457             wxTheApp->GetAppDisplayName(),
 458             wxYES_NO | wxCANCEL | wxICON_QUESTION,
 459             GetDocumentWindow()
 460           ) != wxYES )
 461         return false;
 462
 463     if ( !DoOpenDocument(GetFilename()) )
 464         return false;
 465
 466     Modify(false);
 467     UpdateAllViews();
 468
 469     return true;
 470 }
 471
 472
 473 // Get title, or filename if no title, else unnamed
 474 #if WXWIN_COMPATIBILITY_2_8
 475 bool wxDocument::GetPrintableName(wxString& buf) const
 476 {
 477     // this function cannot only be overridden by the user code but also
 478     // called by it so we need to ensure that we return the same thing as
 479     // GetUserReadableName() but we can't call it because this would result in
 480     // an infinite recursion, hence we use the helper DoGetUserReadableName()
 481     buf = DoGetUserReadableName();
 482
 483     return true;
 484 }
 485 #endif // WXWIN_COMPATIBILITY_2_8
 486
 487 wxString wxDocument::GetUserReadableName() const
 488 {
 489 #if WXWIN_COMPATIBILITY_2_8
 490     // we need to call the old virtual function to ensure that the overridden
 491     // version of it is still called
 492     wxString name;
 493     if ( GetPrintableName(name) )
 494         return name;
 495 #endif // WXWIN_COMPATIBILITY_2_8
 496
 497     return DoGetUserReadableName();
 498 }
 499
 500 wxString wxDocument::DoGetUserReadableName() const
 501 {
 502     if ( !m_documentTitle.empty() )
 503         return m_documentTitle;
 504
 505     if ( !m_documentFile.empty() )
 506         return wxFileNameFromPath(m_documentFile);
 507
 508     return _("unnamed");
 509 }
 510
 511 wxWindow *wxDocument::GetDocumentWindow() const
 512 {
 513     wxView * const view = GetFirstView();
 514
 515     return view ? view->GetFrame() : wxTheApp->GetTopWindow();
 516 }
 517
 518 wxCommandProcessor *wxDocument::OnCreateCommandProcessor()
 519 {
 520     return new wxCommandProcessor;
 521 }
 522
 523 // true if safe to close
 524 bool wxDocument::OnSaveModified()
 525 {
 526     if ( IsModified() )
 527     {
 528         switch ( wxMessageBox
 529                  (
 530                     wxString::Format
 531                     (
 532                      _("Do you want to save changes to %s?"),
 533                      GetUserReadableName()
 534                     ),
 535                     wxTheApp->GetAppDisplayName(),
 536                     wxYES_NO | wxCANCEL | wxICON_QUESTION | wxCENTRE
 537                  ) )
 538         {
 539             case wxNO:
 540                 Modify(false);
 541                 break;
 542
 543             case wxYES:
 544                 return Save();
 545
 546             case wxCANCEL:
 547                 return false;
 548         }
 549     }
 550
 551     return true;
 552 }
 553
 554 bool wxDocument::Draw(wxDC& WXUNUSED(context))
 555 {
 556     return true;
 557 }
 558
 559 bool wxDocument::AddView(wxView *view)
 560 {
 561     if ( !m_documentViews.Member(view) )
 562     {
 563         m_documentViews.Append(view);
 564         OnChangedViewList();
 565     }
 566     return true;
 567 }
 568
 569 bool wxDocument::RemoveView(wxView *view)
 570 {
 571     (void)m_documentViews.DeleteObject(view);
 572     OnChangedViewList();
 573     return true;
 574 }
 575
 576 bool wxDocument::OnCreate(const wxString& WXUNUSED(path), long flags)
 577 {
 578     return GetDocumentTemplate()->CreateView(this, flags) != NULL;
 579 }
 580
 581 // Called after a view is added or removed.
 582 // The default implementation deletes the document if
 583 // there are no more views.
 584 void wxDocument::OnChangedViewList()
 585 {
 586     if ( m_documentViews.empty() && OnSaveModified() )
 587         delete this;
 588 }
 589
 590 void wxDocument::UpdateAllViews(wxView *sender, wxObject *hint)
 591 {
 592     wxList::compatibility_iterator node = m_documentViews.GetFirst();
 593     while (node)
 594     {
 595         wxView *view = (wxView *)node->GetData();
 596         if (view != sender)
 597             view->OnUpdate(sender, hint);
 598         node = node->GetNext();
 599     }
 600 }
 601
 602 void wxDocument::NotifyClosing()
 603 {
 604     wxList::compatibility_iterator node = m_documentViews.GetFirst();
 605     while (node)
 606     {
 607         wxView *view = (wxView *)node->GetData();
 608         view->OnClosingDocument();
 609         node = node->GetNext();
 610     }
 611 }
 612
 613 void wxDocument::SetFilename(const wxString& filename, bool notifyViews)
 614 {
 615     m_documentFile = filename;
 616     OnChangeFilename(notifyViews);
 617 }
 618
 619 void wxDocument::OnChangeFilename(bool notifyViews)
 620 {
 621     if ( notifyViews )
 622     {
 623         // Notify the views that the filename has changed
 624         wxList::compatibility_iterator node = m_documentViews.GetFirst();
 625         while (node)
 626         {
 627             wxView *view = (wxView *)node->GetData();
 628             view->OnChangeFilename();
 629             node = node->GetNext();
 630         }
 631     }
 632 }
 633
 634 bool wxDocument::DoSaveDocument(const wxString& file)
 635 {
 636 #if wxUSE_STD_IOSTREAM
 637     wxSTD ofstream store(file.mb_str(), wxSTD ios::binary);
 638     if ( !store )
 639 #else
 640     wxFileOutputStream store(file);
 641     if ( store.GetLastError() != wxSTREAM_NO_ERROR )
 642 #endif
 643     {
 644         wxLogError(_("File \"%s\" could not be opened for writing."), file);
 645         return false;
 646     }
 647
 648     if (!SaveObject(store))
 649     {
 650         wxLogError(_("Failed to save document to the file \"%s\"."), file);
 651         return false;
 652     }
 653
 654     return true;
 655 }
 656
 657 bool wxDocument::DoOpenDocument(const wxString& file)
 658 {
 659 #if wxUSE_STD_IOSTREAM
 660     wxSTD ifstream store(file.mb_str(), wxSTD ios::binary);
 661     if ( !store )
 662 #else
 663     wxFileInputStream store(file);
 664     if (store.GetLastError() != wxSTREAM_NO_ERROR || !store.IsOk())
 665 #endif
 666     {
 667         wxLogError(_("File \"%s\" could not be opened for reading."), file);
 668         return false;
 669     }
 670
 671 #if wxUSE_STD_IOSTREAM
 672     LoadObject(store);
 673     if ( !store )
 674 #else
 675     int res = LoadObject(store).GetLastError();
 676     if ( res != wxSTREAM_NO_ERROR && res != wxSTREAM_EOF )
 677 #endif
 678     {
 679         wxLogError(_("Failed to read document from the file \"%s\"."), file);
 680         return false;
 681     }
 682
 683     return true;
 684 }
 685
 686
 687 // ----------------------------------------------------------------------------
 688 // Document view
 689 // ----------------------------------------------------------------------------
 690
 691 wxView::wxView()
 692 {
 693     m_viewDocument = NULL;
 694
 695     m_viewFrame = NULL;
 696
 697     m_docChildFrame = NULL;
 698 }
 699
 700 wxView::~wxView()
 701 {
 702     if (m_viewDocument && GetDocumentManager())
 703         GetDocumentManager()->ActivateView(this, false);
 704
 705     // reset our frame view first, before removing it from the document as
 706     // SetView(NULL) is a simple call while RemoveView() may result in user
 707     // code being executed and this user code can, for example, show a message
 708     // box which would result in an activation event for m_docChildFrame and so
 709     // could reactivate the view being destroyed -- unless we reset it first
 710     if ( m_docChildFrame && m_docChildFrame->GetView() == this )
 711     {
 712         // prevent it from doing anything with us
 713         m_docChildFrame->SetView(NULL);
 714
 715         // it doesn't make sense to leave the frame alive if its associated
 716         // view doesn't exist any more so unconditionally close it as well
 717         //
 718         // notice that we only get here if m_docChildFrame is non-NULL in the
 719         // first place and it will be always NULL if we're deleted because our
 720         // frame was closed, so this only catches the case of directly deleting
 721         // the view, as it happens if its creation fails in wxDocTemplate::
 722         // CreateView() for example
 723         m_docChildFrame->GetWindow()->Destroy();
 724     }
 725
 726     if ( m_viewDocument )
 727         m_viewDocument->RemoveView(this);
 728 }
 729
 730 void wxView::SetDocChildFrame(wxDocChildFrameAnyBase *docChildFrame)
 731 {
 732     SetFrame(docChildFrame ? docChildFrame->GetWindow() : NULL);
 733     m_docChildFrame = docChildFrame;
 734 }
 735
 736 bool wxView::TryBefore(wxEvent& event)
 737 {
 738     wxDocument * const doc = GetDocument();
 739     return doc && doc->ProcessEventLocally(event);
 740 }
 741
 742 void wxView::OnActivateView(bool WXUNUSED(activate),
 743                             wxView *WXUNUSED(activeView),
 744                             wxView *WXUNUSED(deactiveView))
 745 {
 746 }
 747
 748 void wxView::OnPrint(wxDC *dc, wxObject *WXUNUSED(info))
 749 {
 750     OnDraw(dc);
 751 }
 752
 753 void wxView::OnUpdate(wxView *WXUNUSED(sender), wxObject *WXUNUSED(hint))
 754 {
 755 }
 756
 757 void wxView::OnChangeFilename()
 758 {
 759     // GetFrame can return wxWindow rather than wxTopLevelWindow due to
 760     // generic MDI implementation so use SetLabel rather than SetTitle.
 761     // It should cause SetTitle() for top level windows.
 762     wxWindow *win = GetFrame();
 763     if (!win) return;
 764
 765     wxDocument *doc = GetDocument();
 766     if (!doc) return;
 767
 768     wxString label = doc->GetUserReadableName();
 769     if (doc->IsModified())
 770     {
 771        label += "*";
 772     }
 773     win->SetLabel(label);
 774 }
 775
 776 void wxView::SetDocument(wxDocument *doc)
 777 {
 778     m_viewDocument = doc;
 779     if (doc)
 780         doc->AddView(this);
 781 }
 782
 783 bool wxView::Close(bool deleteWindow)
 784 {
 785     return OnClose(deleteWindow);
 786 }
 787
 788 void wxView::Activate(bool activate)
 789 {
 790     if (GetDocument() && GetDocumentManager())
 791     {
 792         OnActivateView(activate, this, GetDocumentManager()->GetCurrentView());
 793         GetDocumentManager()->ActivateView(this, activate);
 794     }
 795 }
 796
 797 bool wxView::OnClose(bool WXUNUSED(deleteWindow))
 798 {
 799     return GetDocument() ? GetDocument()->Close() : true;
 800 }
 801
 802 #if wxUSE_PRINTING_ARCHITECTURE
 803 wxPrintout *wxView::OnCreatePrintout()
 804 {
 805     return new wxDocPrintout(this);
 806 }
 807 #endif // wxUSE_PRINTING_ARCHITECTURE
 808
 809 // ----------------------------------------------------------------------------
 810 // wxDocTemplate
 811 // ----------------------------------------------------------------------------
 812
 813 wxDocTemplate::wxDocTemplate(wxDocManager *manager,
 814                              const wxString& descr,
 815                              const wxString& filter,
 816                              const wxString& dir,
 817                              const wxString& ext,
 818                              const wxString& docTypeName,
 819                              const wxString& viewTypeName,
 820                              wxClassInfo *docClassInfo,
 821                              wxClassInfo *viewClassInfo,
 822                              long flags)
 823 {
 824     m_documentManager = manager;
 825     m_description = descr;
 826     m_directory = dir;
 827     m_defaultExt = ext;
 828     m_fileFilter = filter;
 829     m_flags = flags;
 830     m_docTypeName = docTypeName;
 831     m_viewTypeName = viewTypeName;
 832     m_documentManager->AssociateTemplate(this);
 833
 834     m_docClassInfo = docClassInfo;
 835     m_viewClassInfo = viewClassInfo;
 836 }
 837
 838 wxDocTemplate::~wxDocTemplate()
 839 {
 840     m_documentManager->DisassociateTemplate(this);
 841 }
 842
 843 // Tries to dynamically construct an object of the right class.
 844 wxDocument *wxDocTemplate::CreateDocument(const wxString& path, long flags)
 845 {
 846     // InitDocument() is supposed to delete the document object if its
 847     // initialization fails so don't use wxScopedPtr<> here: this is fragile
 848     // but unavoidable because the default implementation uses CreateView()
 849     // which may -- or not -- create a wxView and if it does create it and its
 850     // initialization fails then the view destructor will delete the document
 851     // (via RemoveView()) and as we can't distinguish between the two cases we
 852     // just have to assume that it always deletes it in case of failure
 853     wxDocument * const doc = DoCreateDocument();
 854
 855     return doc && InitDocument(doc, path, flags) ? doc : NULL;
 856 }
 857
 858 bool
 859 wxDocTemplate::InitDocument(wxDocument* doc, const wxString& path, long flags)
 860 {
 861     wxScopeGuard g = wxMakeObjGuard(*doc, &wxDocument::DeleteAllViews);
 862
 863     doc->SetFilename(path);
 864     doc->SetDocumentTemplate(this);
 865     GetDocumentManager()->AddDocument(doc);
 866     doc->SetCommandProcessor(doc->OnCreateCommandProcessor());
 867
 868     if ( !doc->OnCreate(path, flags) )
 869         return false;
 870
 871     g.Dismiss(); // no need to call DeleteAllViews() anymore
 872
 873     return true;
 874 }
 875
 876 wxView *wxDocTemplate::CreateView(wxDocument *doc, long flags)
 877 {
 878     wxScopedPtr<wxView> view(DoCreateView());
 879     if ( !view )
 880         return NULL;
 881
 882     view->SetDocument(doc);
 883     if ( !view->OnCreate(doc, flags) )
 884         return NULL;
 885
 886     return view.release();
 887 }
 888
 889 // The default (very primitive) format detection: check is the extension is
 890 // that of the template
 891 bool wxDocTemplate::FileMatchesTemplate(const wxString& path)
 892 {
 893     wxStringTokenizer parser (GetFileFilter(), wxT(";"));
 894     wxString anything = wxT ("*");
 895     while (parser.HasMoreTokens())
 896     {
 897         wxString filter = parser.GetNextToken();
 898         wxString filterExt = FindExtension (filter);
 899         if ( filter.IsSameAs (anything)    ||
 900              filterExt.IsSameAs (anything) ||
 901              filterExt.IsSameAs (FindExtension (path)) )
 902             return true;
 903     }
 904     return GetDefaultExtension().IsSameAs(FindExtension(path));
 905 }
 906
 907 wxDocument *wxDocTemplate::DoCreateDocument()
 908 {
 909     if (!m_docClassInfo)
 910         return NULL;
 911
 912     return static_cast<wxDocument *>(m_docClassInfo->CreateObject());
 913 }
 914
 915 wxView *wxDocTemplate::DoCreateView()
 916 {
 917     if (!m_viewClassInfo)
 918         return NULL;
 919
 920     return static_cast<wxView *>(m_viewClassInfo->CreateObject());
 921 }
 922
 923 // ----------------------------------------------------------------------------
 924 // wxDocManager
 925 // ----------------------------------------------------------------------------
 926
 927 BEGIN_EVENT_TABLE(wxDocManager, wxEvtHandler)
 928     EVT_MENU(wxID_OPEN, wxDocManager::OnFileOpen)
 929     EVT_MENU(wxID_CLOSE, wxDocManager::OnFileClose)
 930     EVT_MENU(wxID_CLOSE_ALL, wxDocManager::OnFileCloseAll)
 931     EVT_MENU(wxID_REVERT, wxDocManager::OnFileRevert)
 932     EVT_MENU(wxID_NEW, wxDocManager::OnFileNew)
 933     EVT_MENU(wxID_SAVE, wxDocManager::OnFileSave)
 934     EVT_MENU(wxID_SAVEAS, wxDocManager::OnFileSaveAs)
 935     EVT_MENU(wxID_UNDO, wxDocManager::OnUndo)
 936     EVT_MENU(wxID_REDO, wxDocManager::OnRedo)
 937
 938     // We don't know in advance how many items can there be in the MRU files
 939     // list so set up OnMRUFile() as a handler for all menu events and do the
 940     // check for the id of the menu item clicked inside it.
 941     EVT_MENU(wxID_ANY, wxDocManager::OnMRUFile)
 942
 943     EVT_UPDATE_UI(wxID_OPEN, wxDocManager::OnUpdateFileOpen)
 944     EVT_UPDATE_UI(wxID_CLOSE, wxDocManager::OnUpdateDisableIfNoDoc)
 945     EVT_UPDATE_UI(wxID_CLOSE_ALL, wxDocManager::OnUpdateDisableIfNoDoc)
 946     EVT_UPDATE_UI(wxID_REVERT, wxDocManager::OnUpdateFileRevert)
 947     EVT_UPDATE_UI(wxID_NEW, wxDocManager::OnUpdateFileNew)
 948     EVT_UPDATE_UI(wxID_SAVE, wxDocManager::OnUpdateFileSave)
 949     EVT_UPDATE_UI(wxID_SAVEAS, wxDocManager::OnUpdateFileSaveAs)
 950     EVT_UPDATE_UI(wxID_UNDO, wxDocManager::OnUpdateUndo)
 951     EVT_UPDATE_UI(wxID_REDO, wxDocManager::OnUpdateRedo)
 952
 953 #if wxUSE_PRINTING_ARCHITECTURE
 954     EVT_MENU(wxID_PRINT, wxDocManager::OnPrint)
 955     EVT_MENU(wxID_PREVIEW, wxDocManager::OnPreview)
 956     EVT_MENU(wxID_PRINT_SETUP, wxDocManager::OnPageSetup)
 957
 958     EVT_UPDATE_UI(wxID_PRINT, wxDocManager::OnUpdateDisableIfNoDoc)
 959     EVT_UPDATE_UI(wxID_PREVIEW, wxDocManager::OnUpdateDisableIfNoDoc)
 960     // NB: we keep "Print setup" menu item always enabled as it can be used
 961     //     even without an active document
 962 #endif // wxUSE_PRINTING_ARCHITECTURE
 963 END_EVENT_TABLE()
 964
 965 wxDocManager* wxDocManager::sm_docManager = NULL;
 966
 967 wxDocManager::wxDocManager(long WXUNUSED(flags), bool initialize)
 968 {
 969     sm_docManager = this;
 970
 971     m_defaultDocumentNameCounter = 1;
 972     m_currentView = NULL;
 973     m_maxDocsOpen = INT_MAX;
 974     m_fileHistory = NULL;
 975     if ( initialize )
 976         Initialize();
 977 }
 978
 979 wxDocManager::~wxDocManager()
 980 {
 981     Clear();
 982     delete m_fileHistory;
 983     sm_docManager = NULL;
 984 }
 985
 986 // closes the specified document
 987 bool wxDocManager::CloseDocument(wxDocument* doc, bool force)
 988 {
 989     if ( !doc->Close() && !force )
 990         return false;
 991
 992     // Implicitly deletes the document when
 993     // the last view is deleted
 994     doc->DeleteAllViews();
 995
 996     // Check we're really deleted
 997     if (m_docs.Member(doc))
 998         delete doc;
 999
1000     return true;
1001 }
1002
1003 bool wxDocManager::CloseDocuments(bool force)
1004 {
1005     wxList::compatibility_iterator node = m_docs.GetFirst();
1006     while (node)
1007     {
1008         wxDocument *doc = (wxDocument *)node->GetData();
1009         wxList::compatibility_iterator next = node->GetNext();
1010
1011         if (!CloseDocument(doc, force))
1012             return false;
1013
1014         // This assumes that documents are not connected in
1015         // any way, i.e. deleting one document does NOT
1016         // delete another.
1017         node = next;
1018     }
1019     return true;
1020 }
1021
1022 bool wxDocManager::Clear(bool force)
1023 {
1024     if (!CloseDocuments(force))
1025         return false;
1026
1027     m_currentView = NULL;
1028
1029     wxList::compatibility_iterator node = m_templates.GetFirst();
1030     while (node)
1031     {
1032         wxDocTemplate *templ = (wxDocTemplate*) node->GetData();
1033         wxList::compatibility_iterator next = node->GetNext();
1034         delete templ;
1035         node = next;
1036     }
1037     return true;
1038 }
1039
1040 bool wxDocManager::Initialize()
1041 {
1042     m_fileHistory = OnCreateFileHistory();
1043     return true;
1044 }
1045
1046 wxString wxDocManager::GetLastDirectory() const
1047 {
1048     // if we haven't determined the last used directory yet, do it now
1049     if ( m_lastDirectory.empty() )
1050     {
1051         // we're going to modify m_lastDirectory in this const method, so do it
1052         // via non-const self pointer instead of const this one
1053         wxDocManager * const self = const_cast<wxDocManager *>(this);
1054
1055         // first try to reuse the directory of the most recently opened file:
1056         // this ensures that if the user opens a file, closes the program and
1057         // runs it again the "Open file" dialog will open in the directory of
1058         // the last file he used
1059         if ( m_fileHistory && m_fileHistory->GetCount() )
1060         {
1061             const wxString lastOpened = m_fileHistory->GetHistoryFile(0);
1062             const wxFileName fn(lastOpened);
1063             if ( fn.DirExists() )
1064             {
1065                 self->m_lastDirectory = fn.GetPath();
1066             }
1067             //else: should we try the next one?
1068         }
1069         //else: no history yet
1070
1071         // if we don't have any files in the history (yet?), use the
1072         // system-dependent default location for the document files
1073         if ( m_lastDirectory.empty() )
1074         {
1075             self->m_lastDirectory = wxStandardPaths::Get().GetAppDocumentsDir();
1076         }
1077     }
1078
1079     return m_lastDirectory;
1080 }
1081
1082 wxFileHistory *wxDocManager::OnCreateFileHistory()
1083 {
1084     return new wxFileHistory;
1085 }
1086
1087 void wxDocManager::OnFileClose(wxCommandEvent& WXUNUSED(event))
1088 {
1089     wxDocument *doc = GetCurrentDocument();
1090     if (doc)
1091         CloseDocument(doc);
1092 }
1093
1094 void wxDocManager::OnFileCloseAll(wxCommandEvent& WXUNUSED(event))
1095 {
1096     CloseDocuments(false);
1097 }
1098
1099 void wxDocManager::OnFileNew(wxCommandEvent& WXUNUSED(event))
1100 {
1101     CreateNewDocument();
1102 }
1103
1104 void wxDocManager::OnFileOpen(wxCommandEvent& WXUNUSED(event))
1105 {
1106     if ( !CreateDocument("") )
1107     {
1108         OnOpenFileFailure();
1109     }
1110 }
1111
1112 void wxDocManager::OnFileRevert(wxCommandEvent& WXUNUSED(event))
1113 {
1114     wxDocument *doc = GetCurrentDocument();
1115     if (!doc)
1116         return;
1117     doc->Revert();
1118 }
1119
1120 void wxDocManager::OnFileSave(wxCommandEvent& WXUNUSED(event))
1121 {
1122     wxDocument *doc = GetCurrentDocument();
1123     if (!doc)
1124         return;
1125     doc->Save();
1126 }
1127
1128 void wxDocManager::OnFileSaveAs(wxCommandEvent& WXUNUSED(event))
1129 {
1130     wxDocument *doc = GetCurrentDocument();
1131     if (!doc)
1132         return;
1133     doc->SaveAs();
1134 }
1135
1136 void wxDocManager::OnMRUFile(wxCommandEvent& event)
1137 {
1138     // Check if the id is in the range assigned to MRU list entries.
1139     const int id = event.GetId();
1140     if ( id >= wxID_FILE1 &&
1141             id < wxID_FILE1 + static_cast<int>(m_fileHistory->GetCount()) )
1142     {
1143         DoOpenMRUFile(id - wxID_FILE1);
1144     }
1145     else
1146     {
1147         event.Skip();
1148     }
1149 }
1150
1151 void wxDocManager::DoOpenMRUFile(unsigned n)
1152 {
1153     wxString filename(GetHistoryFile(n));
1154     if ( filename.empty() )
1155         return;
1156
1157     wxString errMsg; // must contain exactly one "%s" if non-empty
1158     if ( wxFile::Exists(filename) )
1159     {
1160         // Try to open it but don't give an error if it failed: this could be
1161         // normal, e.g. because the user cancelled opening it, and we don't
1162         // have any useful information to put in the error message anyhow, so
1163         // we assume that in case of an error the appropriate message had been
1164         // already logged.
1165         (void)CreateDocument(filename, wxDOC_SILENT);
1166     }
1167     else // file doesn't exist
1168     {
1169         OnMRUFileNotExist(n, filename);
1170     }
1171 }
1172
1173 void wxDocManager::OnMRUFileNotExist(unsigned n, const wxString& filename)
1174 {
1175     // remove the file which we can't open from the MRU list
1176     RemoveFileFromHistory(n);
1177
1178     // and tell the user about it
1179     wxLogError(_("The file '%s' doesn't exist and couldn't be opened.\n"
1180                  "It has been removed from the most recently used files list."),
1181                filename);
1182 }
1183
1184 #if wxUSE_PRINTING_ARCHITECTURE
1185
1186 void wxDocManager::OnPrint(wxCommandEvent& WXUNUSED(event))
1187 {
1188     wxView *view = GetAnyUsableView();
1189     if (!view)
1190         return;
1191
1192     wxPrintout *printout = view->OnCreatePrintout();
1193     if (printout)
1194     {
1195         wxPrintDialogData printDialogData(m_pageSetupDialogData.GetPrintData());
1196         wxPrinter printer(&printDialogData);
1197         printer.Print(view->GetFrame(), printout, true);
1198
1199         delete printout;
1200     }
1201 }
1202
1203 void wxDocManager::OnPageSetup(wxCommandEvent& WXUNUSED(event))
1204 {
1205     wxPageSetupDialog dlg(wxTheApp->GetTopWindow(), &m_pageSetupDialogData);
1206     if ( dlg.ShowModal() == wxID_OK )
1207     {
1208         m_pageSetupDialogData = dlg.GetPageSetupData();
1209     }
1210 }
1211
1212 wxPreviewFrame* wxDocManager::CreatePreviewFrame(wxPrintPreviewBase* preview,
1213                                                  wxWindow *parent,
1214                                                  const wxString& title)
1215 {
1216     return new wxPreviewFrame(preview, parent, title);
1217 }
1218
1219 void wxDocManager::OnPreview(wxCommandEvent& WXUNUSED(event))
1220 {
1221     wxBusyCursor busy;
1222     wxView *view = GetAnyUsableView();
1223     if (!view)
1224         return;
1225
1226     wxPrintout *printout = view->OnCreatePrintout();
1227     if (printout)
1228     {
1229         wxPrintDialogData printDialogData(m_pageSetupDialogData.GetPrintData());
1230
1231         // Pass two printout objects: for preview, and possible printing.
1232         wxPrintPreviewBase *
1233             preview = new wxPrintPreview(printout,
1234                                          view->OnCreatePrintout(),
1235                                          &printDialogData);
1236         if ( !preview->IsOk() )
1237         {
1238             delete preview;
1239             wxLogError(_("Print preview creation failed."));
1240             return;
1241         }
1242
1243         wxPreviewFrame* frame = CreatePreviewFrame(preview,
1244                                                    wxTheApp->GetTopWindow(),
1245                                                    _("Print Preview"));
1246         wxCHECK_RET( frame, "should create a print preview frame" );
1247
1248         frame->Centre(wxBOTH);
1249         frame->Initialize();
1250         frame->Show(true);
1251     }
1252 }
1253 #endif // wxUSE_PRINTING_ARCHITECTURE
1254
1255 void wxDocManager::OnUndo(wxCommandEvent& event)
1256 {
1257     wxCommandProcessor * const cmdproc = GetCurrentCommandProcessor();
1258     if ( !cmdproc )
1259     {
1260         event.Skip();
1261         return;
1262     }
1263
1264     cmdproc->Undo();
1265 }
1266
1267 void wxDocManager::OnRedo(wxCommandEvent& event)
1268 {
1269     wxCommandProcessor * const cmdproc = GetCurrentCommandProcessor();
1270     if ( !cmdproc )
1271     {
1272         event.Skip();
1273         return;
1274     }
1275
1276     cmdproc->Redo();
1277 }
1278
1279 // Handlers for UI update commands
1280
1281 void wxDocManager::OnUpdateFileOpen(wxUpdateUIEvent& event)
1282 {
1283     // CreateDocument() (which is called from OnFileOpen) may succeed
1284     // only when there is at least a template:
1285     event.Enable( GetTemplates().GetCount()>0 );
1286 }
1287
1288 void wxDocManager::OnUpdateDisableIfNoDoc(wxUpdateUIEvent& event)
1289 {
1290     event.Enable( GetCurrentDocument() != NULL );
1291 }
1292
1293 void wxDocManager::OnUpdateFileRevert(wxUpdateUIEvent& event)
1294 {
1295     wxDocument* doc = GetCurrentDocument();
1296     event.Enable(doc && doc->IsModified() && doc->GetDocumentSaved());
1297 }
1298
1299 void wxDocManager::OnUpdateFileNew(wxUpdateUIEvent& event)
1300 {
1301     // CreateDocument() (which is called from OnFileNew) may succeed
1302     // only when there is at least a template:
1303     event.Enable( GetTemplates().GetCount()>0 );
1304 }
1305
1306 void wxDocManager::OnUpdateFileSave(wxUpdateUIEvent& event)
1307 {
1308     wxDocument * const doc = GetCurrentDocument();
1309     event.Enable( doc && !doc->IsChildDocument() && !doc->AlreadySaved() );
1310 }
1311
1312 void wxDocManager::OnUpdateFileSaveAs(wxUpdateUIEvent& event)
1313 {
1314     wxDocument * const doc = GetCurrentDocument();
1315     event.Enable( doc && !doc->IsChildDocument() );
1316 }
1317
1318 void wxDocManager::OnUpdateUndo(wxUpdateUIEvent& event)
1319 {
1320     wxCommandProcessor * const cmdproc = GetCurrentCommandProcessor();
1321     if ( !cmdproc )
1322     {
1323         // If we don't have any document at all, the menu item should really be
1324         // disabled.
1325         if ( !GetCurrentDocument() )
1326             event.Enable(false);
1327         else // But if we do have it, it might handle wxID_UNDO on its own
1328             event.Skip();
1329         return;
1330     }
1331     event.Enable(cmdproc->CanUndo());
1332     cmdproc->SetMenuStrings();
1333 }
1334
1335 void wxDocManager::OnUpdateRedo(wxUpdateUIEvent& event)
1336 {
1337     wxCommandProcessor * const cmdproc = GetCurrentCommandProcessor();
1338     if ( !cmdproc )
1339     {
1340         // Use same logic as in OnUpdateUndo() above.
1341         if ( !GetCurrentDocument() )
1342             event.Enable(false);
1343         else
1344             event.Skip();
1345         return;
1346     }
1347     event.Enable(cmdproc->CanRedo());
1348     cmdproc->SetMenuStrings();
1349 }
1350
1351 wxView *wxDocManager::GetAnyUsableView() const
1352 {
1353     wxView *view = GetCurrentView();
1354
1355     if ( !view && !m_docs.empty() )
1356     {
1357         // if we have exactly one document, consider its view to be the current
1358         // one
1359         //
1360         // VZ: I'm not exactly sure why is this needed but this is how this
1361         //     code used to behave before the bug #9518 was fixed and it seems
1362         //     safer to preserve the old logic
1363         wxList::compatibility_iterator node = m_docs.GetFirst();
1364         if ( !node->GetNext() )
1365         {
1366             wxDocument *doc = static_cast<wxDocument *>(node->GetData());
1367             view = doc->GetFirstView();
1368         }
1369         //else: we have more than one document
1370     }
1371
1372     return view;
1373 }
1374
1375 bool wxDocManager::TryBefore(wxEvent& event)
1376 {
1377     wxView * const view = GetAnyUsableView();
1378     return view && view->ProcessEventLocally(event);
1379 }
1380
1381 namespace
1382 {
1383
1384 // helper function: return only the visible templates
1385 wxDocTemplateVector GetVisibleTemplates(const wxList& allTemplates)
1386 {
1387     // select only the visible templates
1388     const size_t totalNumTemplates = allTemplates.GetCount();
1389     wxDocTemplateVector templates;
1390     if ( totalNumTemplates )
1391     {
1392         templates.reserve(totalNumTemplates);
1393
1394         for ( wxList::const_iterator i = allTemplates.begin(),
1395                                    end = allTemplates.end();
1396               i != end;
1397               ++i )
1398         {
1399             wxDocTemplate * const temp = (wxDocTemplate *)*i;
1400             if ( temp->IsVisible() )
1401                 templates.push_back(temp);
1402         }
1403     }
1404
1405     return templates;
1406 }
1407
1408 } // anonymous namespace
1409
1410 void wxDocument::Activate()
1411 {
1412     wxView * const view = GetFirstView();
1413     if ( !view )
1414         return;
1415
1416     view->Activate(true);
1417     if ( wxWindow *win = view->GetFrame() )
1418         win->Raise();
1419 }
1420
1421 wxDocument* wxDocManager::FindDocumentByPath(const wxString& path) const
1422 {
1423     const wxFileName fileName(path);
1424     for ( wxList::const_iterator i = m_docs.begin(); i != m_docs.end(); ++i )
1425     {
1426         wxDocument * const doc = wxStaticCast(*i, wxDocument);
1427
1428         if ( fileName == wxFileName(doc->GetFilename()) )
1429             return doc;
1430     }
1431     return NULL;
1432 }
1433
1434 wxDocument *wxDocManager::CreateDocument(const wxString& pathOrig, long flags)
1435 {
1436     // this ought to be const but SelectDocumentType/Path() are not
1437     // const-correct and can't be changed as, being virtual, this risks
1438     // breaking user code overriding them
1439     wxDocTemplateVector templates(GetVisibleTemplates(m_templates));
1440     const size_t numTemplates = templates.size();
1441     if ( !numTemplates )
1442     {
1443         // no templates can be used, can't create document
1444         return NULL;
1445     }
1446
1447
1448     // normally user should select the template to use but wxDOC_SILENT flag we
1449     // choose one ourselves
1450     wxString path = pathOrig;   // may be modified below
1451     wxDocTemplate *temp;
1452     if ( flags & wxDOC_SILENT )
1453     {
1454         wxASSERT_MSG( !path.empty(),
1455                       "using empty path with wxDOC_SILENT doesn't make sense" );
1456
1457         temp = FindTemplateForPath(path);
1458         if ( !temp )
1459         {
1460             wxLogWarning(_("The format of file '%s' couldn't be determined."),
1461                          path);
1462         }
1463     }
1464     else // not silent, ask the user
1465     {
1466         // for the new file we need just the template, for an existing one we
1467         // need the template and the path, unless it's already specified
1468         if ( (flags & wxDOC_NEW) || !path.empty() )
1469             temp = SelectDocumentType(&templates[0], numTemplates);
1470         else
1471             temp = SelectDocumentPath(&templates[0], numTemplates, path, flags);
1472     }
1473
1474     if ( !temp )
1475         return NULL;
1476
1477     // check whether the document with this path is already opened
1478     if ( !path.empty() )
1479     {
1480         wxDocument * const doc = FindDocumentByPath(path);
1481         if (doc)
1482         {
1483             // file already open, just activate it and return
1484             doc->Activate();
1485             return doc;
1486         }
1487     }
1488
1489     // no, we need to create a new document
1490
1491
1492     // if we've reached the max number of docs, close the first one.
1493     if ( (int)GetDocuments().GetCount() >= m_maxDocsOpen )
1494     {
1495         if ( !CloseDocument((wxDocument *)GetDocuments().GetFirst()->GetData()) )
1496         {
1497             // can't open the new document if closing the old one failed
1498             return NULL;
1499         }
1500     }
1501
1502
1503     // do create and initialize the new document finally
1504     wxDocument * const docNew = temp->CreateDocument(path, flags);
1505     if ( !docNew )
1506         return NULL;
1507
1508     docNew->SetDocumentName(temp->GetDocumentName());
1509     docNew->SetDocumentTemplate(temp);
1510
1511     wxTRY
1512     {
1513         // call the appropriate function depending on whether we're creating a
1514         // new file or opening an existing one
1515         if ( !(flags & wxDOC_NEW ? docNew->OnNewDocument()
1516                                  : docNew->OnOpenDocument(path)) )
1517         {
1518             docNew->DeleteAllViews();
1519             return NULL;
1520         }
1521     }
1522     wxCATCH_ALL( docNew->DeleteAllViews(); throw; )
1523
1524     // add the successfully opened file to MRU, but only if we're going to be
1525     // able to reopen it successfully later which requires the template for
1526     // this document to be retrievable from the file extension
1527     if ( !(flags & wxDOC_NEW) && temp->FileMatchesTemplate(path) )
1528         AddFileToHistory(path);
1529
1530     // at least under Mac (where views are top level windows) it seems to be
1531     // necessary to manually activate the new document to bring it to the
1532     // forefront -- and it shouldn't hurt doing this under the other platforms
1533     docNew->Activate();
1534
1535     return docNew;
1536 }
1537
1538 wxView *wxDocManager::CreateView(wxDocument *doc, long flags)
1539 {
1540     wxDocTemplateVector templates(GetVisibleTemplates(m_templates));
1541     const size_t numTemplates = templates.size();
1542
1543     if ( numTemplates == 0 )
1544         return NULL;
1545
1546     wxDocTemplate * const
1547     temp = numTemplates == 1 ? templates[0]
1548                              : SelectViewType(&templates[0], numTemplates);
1549
1550     if ( !temp )
1551         return NULL;
1552
1553     wxView *view = temp->CreateView(doc, flags);
1554     if ( view )
1555         view->SetViewName(temp->GetViewName());
1556     return view;
1557 }
1558
1559 // Not yet implemented
1560 void
1561 wxDocManager::DeleteTemplate(wxDocTemplate *WXUNUSED(temp), long WXUNUSED(flags))
1562 {
1563 }
1564
1565 // Not yet implemented
1566 bool wxDocManager::FlushDoc(wxDocument *WXUNUSED(doc))
1567 {
1568     return false;
1569 }
1570
1571 wxDocument *wxDocManager::GetCurrentDocument() const
1572 {
1573     wxView * const view = GetAnyUsableView();
1574     return view ? view->GetDocument() : NULL;
1575 }
1576
1577 wxCommandProcessor *wxDocManager::GetCurrentCommandProcessor() const
1578 {
1579     wxDocument * const doc = GetCurrentDocument();
1580     return doc ? doc->GetCommandProcessor() : NULL;
1581 }
1582
1583 // Make a default name for a new document
1584 #if WXWIN_COMPATIBILITY_2_8
1585 bool wxDocManager::MakeDefaultName(wxString& WXUNUSED(name))
1586 {
1587     // we consider that this function can only be overridden by the user code,
1588     // not called by it as it only makes sense to call it internally, so we
1589     // don't bother to return anything from here
1590     return false;
1591 }
1592 #endif // WXWIN_COMPATIBILITY_2_8
1593
1594 wxString wxDocManager::MakeNewDocumentName()
1595 {
1596     wxString name;
1597
1598 #if WXWIN_COMPATIBILITY_2_8
1599     if ( !MakeDefaultName(name) )
1600 #endif // WXWIN_COMPATIBILITY_2_8
1601     {
1602         name.Printf(_("unnamed%d"), m_defaultDocumentNameCounter);
1603         m_defaultDocumentNameCounter++;
1604     }
1605
1606     return name;
1607 }
1608
1609 // Make a frame title (override this to do something different)
1610 // If docName is empty, a document is not currently active.
1611 wxString wxDocManager::MakeFrameTitle(wxDocument* doc)
1612 {
1613     wxString appName = wxTheApp->GetAppDisplayName();
1614     wxString title;
1615     if (!doc)
1616         title = appName;
1617     else
1618     {
1619         wxString docName = doc->GetUserReadableName();
1620         title = docName + wxString(_(" - ")) + appName;
1621     }
1622     return title;
1623 }
1624
1625
1626 // Not yet implemented
1627 wxDocTemplate *wxDocManager::MatchTemplate(const wxString& WXUNUSED(path))
1628 {
1629     return NULL;
1630 }
1631
1632 // File history management
1633 void wxDocManager::AddFileToHistory(const wxString& file)
1634 {
1635     if (m_fileHistory)
1636         m_fileHistory->AddFileToHistory(file);
1637 }
1638
1639 void wxDocManager::RemoveFileFromHistory(size_t i)
1640 {
1641     if (m_fileHistory)
1642         m_fileHistory->RemoveFileFromHistory(i);
1643 }
1644
1645 wxString wxDocManager::GetHistoryFile(size_t i) const
1646 {
1647     wxString histFile;
1648
1649     if (m_fileHistory)
1650         histFile = m_fileHistory->GetHistoryFile(i);
1651
1652     return histFile;
1653 }
1654
1655 void wxDocManager::FileHistoryUseMenu(wxMenu *menu)
1656 {
1657     if (m_fileHistory)
1658         m_fileHistory->UseMenu(menu);
1659 }
1660
1661 void wxDocManager::FileHistoryRemoveMenu(wxMenu *menu)
1662 {
1663     if (m_fileHistory)
1664         m_fileHistory->RemoveMenu(menu);
1665 }
1666
1667 #if wxUSE_CONFIG
1668 void wxDocManager::FileHistoryLoad(const wxConfigBase& config)
1669 {
1670     if (m_fileHistory)
1671         m_fileHistory->Load(config);
1672 }
1673
1674 void wxDocManager::FileHistorySave(wxConfigBase& config)
1675 {
1676     if (m_fileHistory)
1677         m_fileHistory->Save(config);
1678 }
1679 #endif
1680
1681 void wxDocManager::FileHistoryAddFilesToMenu(wxMenu* menu)
1682 {
1683     if (m_fileHistory)
1684         m_fileHistory->AddFilesToMenu(menu);
1685 }
1686
1687 void wxDocManager::FileHistoryAddFilesToMenu()
1688 {
1689     if (m_fileHistory)
1690         m_fileHistory->AddFilesToMenu();
1691 }
1692
1693 size_t wxDocManager::GetHistoryFilesCount() const
1694 {
1695     return m_fileHistory ? m_fileHistory->GetCount() : 0;
1696 }
1697
1698
1699 // Find out the document template via matching in the document file format
1700 // against that of the template
1701 wxDocTemplate *wxDocManager::FindTemplateForPath(const wxString& path)
1702 {
1703     wxDocTemplate *theTemplate = NULL;
1704
1705     // Find the template which this extension corresponds to
1706     for (size_t i = 0; i < m_templates.GetCount(); i++)
1707     {
1708         wxDocTemplate *temp = (wxDocTemplate *)m_templates.Item(i)->GetData();
1709         if ( temp->FileMatchesTemplate(path) )
1710         {
1711             theTemplate = temp;
1712             break;
1713         }
1714     }
1715     return theTemplate;
1716 }
1717
1718 // Prompts user to open a file, using file specs in templates.
1719 // Must extend the file selector dialog or implement own; OR
1720 // match the extension to the template extension.
1721
1722 wxDocTemplate *wxDocManager::SelectDocumentPath(wxDocTemplate **templates,
1723                                                 int noTemplates,
1724                                                 wxString& path,
1725                                                 long WXUNUSED(flags),
1726                                                 bool WXUNUSED(save))
1727 {
1728 #ifdef wxHAS_MULTIPLE_FILEDLG_FILTERS
1729     wxString descrBuf;
1730
1731     for (int i = 0; i < noTemplates; i++)
1732     {
1733         if (templates[i]->IsVisible())
1734         {
1735             // add a '|' to separate this filter from the previous one
1736             if ( !descrBuf.empty() )
1737                 descrBuf << wxT('|');
1738
1739             descrBuf << templates[i]->GetDescription()
1740                 << wxT(" (") << templates[i]->GetFileFilter() << wxT(") |")
1741                 << templates[i]->GetFileFilter();
1742         }
1743     }
1744 #else
1745     wxString descrBuf = wxT("*.*");
1746     wxUnusedVar(noTemplates);
1747 #endif
1748
1749     int FilterIndex = -1;
1750
1751     wxString pathTmp = wxFileSelectorEx(_("Open File"),
1752                                         GetLastDirectory(),
1753                                         wxEmptyString,
1754                                         &FilterIndex,
1755                                         descrBuf,
1756                                         wxFD_OPEN | wxFD_FILE_MUST_EXIST);
1757
1758     wxDocTemplate *theTemplate = NULL;
1759     if (!pathTmp.empty())
1760     {
1761         if (!wxFileExists(pathTmp))
1762         {
1763             wxString msgTitle;
1764             if (!wxTheApp->GetAppDisplayName().empty())
1765                 msgTitle = wxTheApp->GetAppDisplayName();
1766             else
1767                 msgTitle = wxString(_("File error"));
1768
1769             wxMessageBox(_("Sorry, could not open this file."),
1770                          msgTitle,
1771                          wxOK | wxICON_EXCLAMATION | wxCENTRE);
1772
1773             path = wxEmptyString;
1774             return NULL;
1775         }
1776
1777         SetLastDirectory(wxPathOnly(pathTmp));
1778
1779         path = pathTmp;
1780
1781         // first choose the template using the extension, if this fails (i.e.
1782         // wxFileSelectorEx() didn't fill it), then use the path
1783         if ( FilterIndex != -1 )
1784             theTemplate = templates[FilterIndex];
1785         if ( !theTemplate )
1786             theTemplate = FindTemplateForPath(path);
1787         if ( !theTemplate )
1788         {
1789             // Since we do not add files with non-default extensions to the
1790             // file history this can only happen if the application changes the
1791             // allowed templates in runtime.
1792             wxMessageBox(_("Sorry, the format for this file is unknown."),
1793                          _("Open File"),
1794                          wxOK | wxICON_EXCLAMATION | wxCENTRE);
1795         }
1796     }
1797     else
1798     {
1799         path.clear();
1800     }
1801
1802     return theTemplate;
1803 }
1804
1805 wxDocTemplate *wxDocManager::SelectDocumentType(wxDocTemplate **templates,
1806                                                 int noTemplates, bool sort)
1807 {
1808     wxArrayString strings;
1809     wxScopedArray<wxDocTemplate *> data(new wxDocTemplate *[noTemplates]);
1810     int i;
1811     int n = 0;
1812
1813     for (i = 0; i < noTemplates; i++)
1814     {
1815         if (templates[i]->IsVisible())
1816         {
1817             int j;
1818             bool want = true;
1819             for (j = 0; j < n; j++)
1820             {
1821                 //filter out NOT unique documents + view combinations
1822                 if ( templates[i]->m_docTypeName == data[j]->m_docTypeName &&
1823                      templates[i]->m_viewTypeName == data[j]->m_viewTypeName
1824                    )
1825                     want = false;
1826             }
1827
1828             if ( want )
1829             {
1830                 strings.Add(templates[i]->m_description);
1831
1832                 data[n] = templates[i];
1833                 n ++;
1834             }
1835         }
1836     }  // for
1837
1838     if (sort)
1839     {
1840         strings.Sort(); // ascending sort
1841         // Yes, this will be slow, but template lists
1842         // are typically short.
1843         int j;
1844         n = strings.Count();
1845         for (i = 0; i < n; i++)
1846         {
1847             for (j = 0; j < noTemplates; j++)
1848             {
1849                 if (strings[i] == templates[j]->m_description)
1850                     data[i] = templates[j];
1851             }
1852         }
1853     }
1854
1855     wxDocTemplate *theTemplate;
1856
1857     switch ( n )
1858     {
1859         case 0:
1860             // no visible templates, hence nothing to choose from
1861             theTemplate = NULL;
1862             break;
1863
1864         case 1:
1865             // don't propose the user to choose if he has no choice
1866             theTemplate = data[0];
1867             break;
1868
1869         default:
1870             // propose the user to choose one of several
1871             theTemplate = (wxDocTemplate *)wxGetSingleChoiceData
1872                           (
1873                             _("Select a document template"),
1874                             _("Templates"),
1875                             strings,
1876                             (void **)data.get()
1877                           );
1878     }
1879
1880     return theTemplate;
1881 }
1882
1883 wxDocTemplate *wxDocManager::SelectViewType(wxDocTemplate **templates,
1884                                             int noTemplates, bool sort)
1885 {
1886     wxArrayString strings;
1887     wxScopedArray<wxDocTemplate *> data(new wxDocTemplate *[noTemplates]);
1888     int i;
1889     int n = 0;
1890
1891     for (i = 0; i < noTemplates; i++)
1892     {
1893         wxDocTemplate *templ = templates[i];
1894         if ( templ->IsVisible() && !templ->GetViewName().empty() )
1895         {
1896             int j;
1897             bool want = true;
1898             for (j = 0; j < n; j++)
1899             {
1900                 //filter out NOT unique views
1901                 if ( templates[i]->m_viewTypeName == data[j]->m_viewTypeName )
1902                     want = false;
1903             }
1904
1905             if ( want )
1906             {
1907                 strings.Add(templ->m_viewTypeName);
1908                 data[n] = templ;
1909                 n ++;
1910             }
1911         }
1912     }
1913
1914     if (sort)
1915     {
1916         strings.Sort(); // ascending sort
1917         // Yes, this will be slow, but template lists
1918         // are typically short.
1919         int j;
1920         n = strings.Count();
1921         for (i = 0; i < n; i++)
1922         {
1923             for (j = 0; j < noTemplates; j++)
1924             {
1925                 if (strings[i] == templates[j]->m_viewTypeName)
1926                     data[i] = templates[j];
1927             }
1928         }
1929     }
1930
1931     wxDocTemplate *theTemplate;
1932
1933     // the same logic as above
1934     switch ( n )
1935     {
1936         case 0:
1937             theTemplate = NULL;
1938             break;
1939
1940         case 1:
1941             theTemplate = data[0];
1942             break;
1943
1944         default:
1945             theTemplate = (wxDocTemplate *)wxGetSingleChoiceData
1946                           (
1947                             _("Select a document view"),
1948                             _("Views"),
1949                             strings,
1950                             (void **)data.get()
1951                           );
1952
1953     }
1954
1955     return theTemplate;
1956 }
1957
1958 void wxDocManager::AssociateTemplate(wxDocTemplate *temp)
1959 {
1960     if (!m_templates.Member(temp))
1961         m_templates.Append(temp);
1962 }
1963
1964 void wxDocManager::DisassociateTemplate(wxDocTemplate *temp)
1965 {
1966     m_templates.DeleteObject(temp);
1967 }
1968
1969 wxDocTemplate* wxDocManager::FindTemplate(const wxClassInfo* classinfo)
1970 {
1971    for ( wxList::compatibility_iterator node = m_templates.GetFirst();
1972          node;
1973          node = node->GetNext() )
1974    {
1975       wxDocTemplate* t = wxStaticCast(node->GetData(), wxDocTemplate);
1976       if ( t->GetDocClassInfo() == classinfo )
1977          return t;
1978    }
1979
1980    return NULL;
1981 }
1982
1983 // Add and remove a document from the manager's list
1984 void wxDocManager::AddDocument(wxDocument *doc)
1985 {
1986     if (!m_docs.Member(doc))
1987         m_docs.Append(doc);
1988 }
1989
1990 void wxDocManager::RemoveDocument(wxDocument *doc)
1991 {
1992     m_docs.DeleteObject(doc);
1993 }
1994
1995 // Views or windows should inform the document manager
1996 // when a view is going in or out of focus
1997 void wxDocManager::ActivateView(wxView *view, bool activate)
1998 {
1999     if ( activate )
2000     {
2001         m_currentView = view;
2002     }
2003     else // deactivate
2004     {
2005         if ( m_currentView == view )
2006         {
2007             // don't keep stale pointer
2008             m_currentView = NULL;
2009         }
2010     }
2011 }
2012
2013 // ----------------------------------------------------------------------------
2014 // wxDocChildFrameAnyBase
2015 // ----------------------------------------------------------------------------
2016
2017 bool wxDocChildFrameAnyBase::TryProcessEvent(wxEvent& event)
2018 {
2019     if ( !m_childView )
2020     {
2021         // We must be being destroyed, don't forward events anywhere as
2022         // m_childDocument could be invalid by now.
2023         return false;
2024     }
2025
2026     // Forward the event to the document manager which will, in turn, forward
2027     // it to its active view which must be our m_childView.
2028     //
2029     // Notice that we do things in this roundabout way to guarantee the correct
2030     // event handlers call order: first the document, then the new and then the
2031     // document manager itself. And if we forwarded the event directly to the
2032     // view, then the document manager would do it once again when we forwarded
2033     // it to it.
2034     return m_childDocument->GetDocumentManager()->ProcessEventLocally(event);
2035 }
2036
2037 bool wxDocChildFrameAnyBase::CloseView(wxCloseEvent& event)
2038 {
2039     if ( m_childView )
2040     {
2041         // notice that we must call wxView::Close() and OnClose() called from
2042         // it in any case, even if we know that we are going to close anyhow
2043         if ( !m_childView->Close(false) && event.CanVeto() )
2044         {
2045             event.Veto();
2046             return false;
2047         }
2048
2049         m_childView->Activate(false);
2050
2051         // it is important to reset m_childView frame pointer to NULL before
2052         // deleting it because while normally it is the frame which deletes the
2053         // view when it's closed, the view also closes the frame if it is
2054         // deleted directly not by us as indicated by its doc child frame
2055         // pointer still being set
2056         m_childView->SetDocChildFrame(NULL);
2057         wxDELETE(m_childView);
2058     }
2059
2060     m_childDocument = NULL;
2061
2062     return true;
2063 }
2064
2065 // ----------------------------------------------------------------------------
2066 // wxDocParentFrameAnyBase
2067 // ----------------------------------------------------------------------------
2068
2069 bool wxDocParentFrameAnyBase::TryProcessEvent(wxEvent& event)
2070 {
2071     if ( !m_docManager )
2072         return false;
2073
2074     // If we have an active view, its associated child frame may have
2075     // already forwarded the event to wxDocManager, check for this:
2076     if ( wxView* const view = m_docManager->GetAnyUsableView() )
2077     {
2078         wxWindow* win = view->GetFrame();
2079         if ( win && win != m_frame )
2080         {
2081             // Notice that we intentionally don't use wxGetTopLevelParent()
2082             // here because we want to check both for the case of a child
2083             // "frame" (e.g. MDI child frame or notebook page) inside this TLW
2084             // and a separate child TLW frame (as used in the SDI mode) here.
2085             for ( win = win->GetParent(); win; win = win->GetParent() )
2086             {
2087                 if ( win == m_frame )
2088                     return false;
2089             }
2090         }
2091         //else: This view is directly associated with the parent frame (which
2092         //      can happen in the so called "single" mode in which only one
2093         //      document can be opened and so is managed by the parent frame
2094         //      itself), there can be no child frame in play so we must forward
2095         //      the event to wxDocManager ourselves.
2096     }
2097
2098     // But forward the event to wxDocManager ourselves if there are no views at
2099     // all or if we are the frame's view ourselves.
2100     return m_docManager->ProcessEventLocally(event);
2101 }
2102
2103 // ----------------------------------------------------------------------------
2104 // Printing support
2105 // ----------------------------------------------------------------------------
2106
2107 #if wxUSE_PRINTING_ARCHITECTURE
2108
2109 namespace
2110 {
2111
2112 wxString GetAppropriateTitle(const wxView *view, const wxString& titleGiven)
2113 {
2114     wxString title(titleGiven);
2115     if ( title.empty() )
2116     {
2117         if ( view && view->GetDocument() )
2118             title = view->GetDocument()->GetUserReadableName();
2119         else
2120             title = _("Printout");
2121     }
2122
2123     return title;
2124 }
2125
2126 } // anonymous namespace
2127
2128 wxDocPrintout::wxDocPrintout(wxView *view, const wxString& title)
2129              : wxPrintout(GetAppropriateTitle(view, title))
2130 {
2131     m_printoutView = view;
2132 }
2133
2134 bool wxDocPrintout::OnPrintPage(int WXUNUSED(page))
2135 {
2136     wxDC *dc = GetDC();
2137
2138     // Get the logical pixels per inch of screen and printer
2139     int ppiScreenX, ppiScreenY;
2140     GetPPIScreen(&ppiScreenX, &ppiScreenY);
2141     wxUnusedVar(ppiScreenY);
2142     int ppiPrinterX, ppiPrinterY;
2143     GetPPIPrinter(&ppiPrinterX, &ppiPrinterY);
2144     wxUnusedVar(ppiPrinterY);
2145
2146     // This scales the DC so that the printout roughly represents the
2147     // the screen scaling. The text point size _should_ be the right size
2148     // but in fact is too small for some reason. This is a detail that will
2149     // need to be addressed at some point but can be fudged for the
2150     // moment.
2151     float scale = (float)((float)ppiPrinterX/(float)ppiScreenX);
2152
2153     // Now we have to check in case our real page size is reduced
2154     // (e.g. because we're drawing to a print preview memory DC)
2155     int pageWidth, pageHeight;
2156     int w, h;
2157     dc->GetSize(&w, &h);
2158     GetPageSizePixels(&pageWidth, &pageHeight);
2159     wxUnusedVar(pageHeight);
2160
2161     // If printer pageWidth == current DC width, then this doesn't
2162     // change. But w might be the preview bitmap width, so scale down.
2163     float overallScale = scale * (float)(w/(float)pageWidth);
2164     dc->SetUserScale(overallScale, overallScale);
2165
2166     if (m_printoutView)
2167     {
2168         m_printoutView->OnDraw(dc);
2169     }
2170     return true;
2171 }
2172
2173 bool wxDocPrintout::HasPage(int pageNum)
2174 {
2175     return (pageNum == 1);
2176 }
2177
2178 bool wxDocPrintout::OnBeginDocument(int startPage, int endPage)
2179 {
2180     if (!wxPrintout::OnBeginDocument(startPage, endPage))
2181         return false;
2182
2183     return true;
2184 }
2185
2186 void wxDocPrintout::GetPageInfo(int *minPage, int *maxPage,
2187                                 int *selPageFrom, int *selPageTo)
2188 {
2189     *minPage = 1;
2190     *maxPage = 1;
2191     *selPageFrom = 1;
2192     *selPageTo = 1;
2193 }
2194
2195 #endif // wxUSE_PRINTING_ARCHITECTURE
2196
2197 // ----------------------------------------------------------------------------
2198 // Permits compatibility with existing file formats and functions that
2199 // manipulate files directly
2200 // ----------------------------------------------------------------------------
2201
2202 #if wxUSE_STD_IOSTREAM
2203
2204 bool wxTransferFileToStream(const wxString& filename, wxSTD ostream& stream)
2205 {
2206 #if wxUSE_FFILE
2207     wxFFile file(filename, wxT("rb"));
2208 #elif wxUSE_FILE
2209     wxFile file(filename, wxFile::read);
2210 #endif
2211     if ( !file.IsOpened() )
2212         return false;
2213
2214     char buf[4096];
2215
2216     size_t nRead;
2217     do
2218     {
2219         nRead = file.Read(buf, WXSIZEOF(buf));
2220         if ( file.Error() )
2221             return false;
2222
2223         stream.write(buf, nRead);
2224         if ( !stream )
2225             return false;
2226     }
2227     while ( !file.Eof() );
2228
2229     return true;
2230 }
2231
2232 bool wxTransferStreamToFile(wxSTD istream& stream, const wxString& filename)
2233 {
2234 #if wxUSE_FFILE
2235     wxFFile file(filename, wxT("wb"));
2236 #elif wxUSE_FILE
2237     wxFile file(filename, wxFile::write);
2238 #endif
2239     if ( !file.IsOpened() )
2240         return false;
2241
2242     char buf[4096];
2243     do
2244     {
2245         stream.read(buf, WXSIZEOF(buf));
2246         if ( !stream.bad() ) // fail may be set on EOF, don't use operator!()
2247         {
2248             if ( !file.Write(buf, stream.gcount()) )
2249                 return false;
2250         }
2251     }
2252     while ( !stream.eof() );
2253
2254     return true;
2255 }
2256
2257 #else // !wxUSE_STD_IOSTREAM
2258
2259 bool wxTransferFileToStream(const wxString& filename, wxOutputStream& stream)
2260 {
2261 #if wxUSE_FFILE
2262     wxFFile file(filename, wxT("rb"));
2263 #elif wxUSE_FILE
2264     wxFile file(filename, wxFile::read);
2265 #endif
2266     if ( !file.IsOpened() )
2267         return false;
2268
2269     char buf[4096];
2270
2271     size_t nRead;
2272     do
2273     {
2274         nRead = file.Read(buf, WXSIZEOF(buf));
2275         if ( file.Error() )
2276             return false;
2277
2278         stream.Write(buf, nRead);
2279         if ( !stream )
2280             return false;
2281     }
2282     while ( !file.Eof() );
2283
2284     return true;
2285 }
2286
2287 bool wxTransferStreamToFile(wxInputStream& stream, const wxString& filename)
2288 {
2289 #if wxUSE_FFILE
2290     wxFFile file(filename, wxT("wb"));
2291 #elif wxUSE_FILE
2292     wxFile file(filename, wxFile::write);
2293 #endif
2294     if ( !file.IsOpened() )
2295         return false;
2296
2297     char buf[4096];
2298     for ( ;; )
2299     {
2300         stream.Read(buf, WXSIZEOF(buf));
2301
2302         const size_t nRead = stream.LastRead();
2303         if ( !nRead )
2304         {
2305             if ( stream.Eof() )
2306                 break;
2307
2308             return false;
2309         }
2310
2311         if ( !file.Write(buf, nRead) )
2312             return false;
2313     }
2314
2315     return true;
2316 }
2317
2318 #endif // wxUSE_STD_IOSTREAM/!wxUSE_STD_IOSTREAM
2319
2320 #endif // wxUSE_DOC_VIEW_ARCHITECTURE