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 IMPLEMENT_DYNAMIC_CLASS(wxFileHistory, wxObject)
  96
  97 // ============================================================================
  98 // implementation
  99 // ============================================================================
 100
 101 // ----------------------------------------------------------------------------
 102 // private helpers
 103 // ----------------------------------------------------------------------------
 104
 105 namespace
 106 {
 107
 108 wxWindow *wxFindSuitableParent()
 109 {
 110     wxWindow * const win = wxGetTopLevelParent(wxWindow::FindFocus());
 111
 112     return win ? win : wxTheApp->GetTopWindow();
 113 }
 114
 115 wxString FindExtension(const wxString& path)
 116 {
 117     wxString ext;
 118     wxFileName::SplitPath(path, NULL, NULL, &ext);
 119
 120     // VZ: extensions are considered not case sensitive - is this really a good
 121     //     idea?
 122     return ext.MakeLower();
 123 }
 124
 125 // return the string used for the MRU list items in the menu
 126 //
 127 // NB: the index n is 0-based, as usual, but the strings start from 1
 128 wxString GetMRUEntryLabel(int n, const wxString& path)
 129 {
 130     // we need to quote '&' characters which are used for mnemonics
 131     wxString pathInMenu(path);
 132     pathInMenu.Replace("&", "&&");
 133
 134     return wxString::Format("&%d %s", n + 1, pathInMenu);
 135 }
 136
 137 } // anonymous namespace
 138
 139 // ----------------------------------------------------------------------------
 140 // Definition of wxDocument
 141 // ----------------------------------------------------------------------------
 142
 143 wxDocument::wxDocument(wxDocument *parent)
 144 {
 145     m_documentModified = false;
 146     m_documentParent = parent;
 147     m_documentTemplate = NULL;
 148     m_commandProcessor = NULL;
 149     m_savedYet = false;
 150 }
 151
 152 bool wxDocument::DeleteContents()
 153 {
 154     return true;
 155 }
 156
 157 wxDocument::~wxDocument()
 158 {
 159     DeleteContents();
 160
 161     delete m_commandProcessor;
 162
 163     if (GetDocumentManager())
 164         GetDocumentManager()->RemoveDocument(this);
 165
 166     // Not safe to do here, since it'll invoke virtual view functions
 167     // expecting to see valid derived objects: and by the time we get here,
 168     // we've called destructors higher up.
 169     //DeleteAllViews();
 170 }
 171
 172 bool wxDocument::Close()
 173 {
 174     if ( !OnSaveModified() )
 175         return false;
 176
 177     return OnCloseDocument();
 178 }
 179
 180 bool wxDocument::OnCloseDocument()
 181 {
 182     // Tell all views that we're about to close
 183     NotifyClosing();
 184     DeleteContents();
 185     Modify(false);
 186     return true;
 187 }
 188
 189 // Note that this implicitly deletes the document when the last view is
 190 // deleted.
 191 bool wxDocument::DeleteAllViews()
 192 {
 193     wxDocManager* manager = GetDocumentManager();
 194
 195     // first check if all views agree to be closed
 196     const wxList::iterator end = m_documentViews.end();
 197     for ( wxList::iterator i = m_documentViews.begin(); i != end; ++i )
 198     {
 199         wxView *view = (wxView *)*i;
 200         if ( !view->Close() )
 201             return false;
 202     }
 203
 204     // all views agreed to close, now do close them
 205     if ( m_documentViews.empty() )
 206     {
 207         // normally the document would be implicitly deleted when the last view
 208         // is, but if don't have any views, do it here instead
 209         if ( manager && manager->GetDocuments().Member(this) )
 210             delete this;
 211     }
 212     else // have views
 213     {
 214         // as we delete elements we iterate over, don't use the usual "from
 215         // begin to end" loop
 216         for ( ;; )
 217         {
 218             wxView *view = (wxView *)*m_documentViews.begin();
 219
 220             bool isLastOne = m_documentViews.size() == 1;
 221
 222             // this always deletes the node implicitly and if this is the last
 223             // view also deletes this object itself (also implicitly, great),
 224             // so we can't test for m_documentViews.empty() after calling this!
 225             delete view;
 226
 227             if ( isLastOne )
 228                 break;
 229         }
 230     }
 231
 232     return true;
 233 }
 234
 235 wxView *wxDocument::GetFirstView() const
 236 {
 237     if ( m_documentViews.empty() )
 238         return NULL;
 239
 240     return static_cast<wxView *>(m_documentViews.GetFirst()->GetData());
 241 }
 242
 243 wxDocManager *wxDocument::GetDocumentManager() const
 244 {
 245     return m_documentTemplate ? m_documentTemplate->GetDocumentManager() : NULL;
 246 }
 247
 248 bool wxDocument::OnNewDocument()
 249 {
 250     // notice that there is no need to neither reset nor even check the
 251     // modified flag here as the document itself is a new object (this is only
 252     // called from CreateDocument()) and so it shouldn't be saved anyhow even
 253     // if it is modified -- this could happen if the user code creates
 254     // documents pre-filled with some user-entered (and which hence must not be
 255     // lost) information
 256
 257     SetDocumentSaved(false);
 258
 259     const wxString name = GetDocumentManager()->MakeNewDocumentName();
 260     SetTitle(name);
 261     SetFilename(name, true);
 262
 263     return true;
 264 }
 265
 266 bool wxDocument::Save()
 267 {
 268     if ( AlreadySaved() )
 269         return true;
 270
 271     if ( m_documentFile.empty() || !m_savedYet )
 272         return SaveAs();
 273
 274     return OnSaveDocument(m_documentFile);
 275 }
 276
 277 bool wxDocument::SaveAs()
 278 {
 279     wxDocTemplate *docTemplate = GetDocumentTemplate();
 280     if (!docTemplate)
 281         return false;
 282
 283 #ifdef wxHAS_MULTIPLE_FILEDLG_FILTERS
 284     wxString filter = docTemplate->GetDescription() + wxT(" (") +
 285         docTemplate->GetFileFilter() + wxT(")|") +
 286         docTemplate->GetFileFilter();
 287
 288     // Now see if there are some other template with identical view and document
 289     // classes, whose filters may also be used.
 290     if (docTemplate->GetViewClassInfo() && docTemplate->GetDocClassInfo())
 291     {
 292         wxList::compatibility_iterator
 293             node = docTemplate->GetDocumentManager()->GetTemplates().GetFirst();
 294         while (node)
 295         {
 296             wxDocTemplate *t = (wxDocTemplate*) node->GetData();
 297
 298             if (t->IsVisible() && t != docTemplate &&
 299                 t->GetViewClassInfo() == docTemplate->GetViewClassInfo() &&
 300                 t->GetDocClassInfo() == docTemplate->GetDocClassInfo())
 301             {
 302                 // add a '|' to separate this filter from the previous one
 303                 if ( !filter.empty() )
 304                     filter << wxT('|');
 305
 306                 filter << t->GetDescription()
 307                        << wxT(" (") << t->GetFileFilter() << wxT(") |")
 308                        << t->GetFileFilter();
 309             }
 310
 311             node = node->GetNext();
 312         }
 313     }
 314 #else
 315     wxString filter = docTemplate->GetFileFilter() ;
 316 #endif
 317
 318     wxString defaultDir = docTemplate->GetDirectory();
 319     if ( defaultDir.empty() )
 320     {
 321         defaultDir = wxPathOnly(GetFilename());
 322         if ( defaultDir.empty() )
 323             defaultDir = GetDocumentManager()->GetLastDirectory();
 324     }
 325
 326     wxString fileName = wxFileSelector(_("Save As"),
 327             defaultDir,
 328             wxFileNameFromPath(GetFilename()),
 329             docTemplate->GetDefaultExtension(),
 330             filter,
 331             wxFD_SAVE | wxFD_OVERWRITE_PROMPT,
 332             GetDocumentWindow());
 333
 334     if (fileName.empty())
 335         return false; // cancelled by user
 336
 337     wxString ext;
 338     wxFileName::SplitPath(fileName, NULL, NULL, &ext);
 339
 340     if (ext.empty())
 341     {
 342         fileName += wxT(".");
 343         fileName += docTemplate->GetDefaultExtension();
 344     }
 345
 346     // Files that were not saved correctly are not added to the FileHistory.
 347     if (!OnSaveDocument(fileName))
 348         return false;
 349
 350     SetTitle(wxFileNameFromPath(fileName));
 351     SetFilename(fileName, true);    // will call OnChangeFileName automatically
 352
 353    // A file that doesn't use the default extension of its document template
 354    // cannot be opened via the FileHistory, so we do not add it.
 355    if (docTemplate->FileMatchesTemplate(fileName))
 356    {
 357        GetDocumentManager()->AddFileToHistory(fileName);
 358    }
 359    //else: the user will probably not be able to open the file again, so we
 360    //      could warn about the wrong file-extension here
 361
 362    return true;
 363 }
 364
 365 bool wxDocument::OnSaveDocument(const wxString& file)
 366 {
 367     if ( !file )
 368         return false;
 369
 370     if ( !DoSaveDocument(file) )
 371         return false;
 372
 373     Modify(false);
 374     SetFilename(file);
 375     SetDocumentSaved(true);
 376 #if defined( __WXOSX_MAC__ ) && wxOSX_USE_CARBON
 377     wxFileName fn(file) ;
 378     fn.MacSetDefaultTypeAndCreator() ;
 379 #endif
 380     return true;
 381 }
 382
 383 bool wxDocument::OnOpenDocument(const wxString& file)
 384 {
 385     // notice that there is no need to check the modified flag here for the
 386     // reasons explained in OnNewDocument()
 387
 388     if ( !DoOpenDocument(file) )
 389         return false;
 390
 391     SetFilename(file, true);
 392
 393     // stretching the logic a little this does make sense because the document
 394     // had been saved into the file we just loaded it from, it just could have
 395     // happened during a previous program execution, it's just that the name of
 396     // this method is a bit unfortunate, it should probably have been called
 397     // HasAssociatedFileName()
 398     SetDocumentSaved(true);
 399
 400     UpdateAllViews();
 401
 402     return true;
 403 }
 404
 405 #if wxUSE_STD_IOSTREAM
 406 wxSTD istream& wxDocument::LoadObject(wxSTD istream& stream)
 407 #else
 408 wxInputStream& wxDocument::LoadObject(wxInputStream& stream)
 409 #endif
 410 {
 411     return stream;
 412 }
 413
 414 #if wxUSE_STD_IOSTREAM
 415 wxSTD ostream& wxDocument::SaveObject(wxSTD ostream& stream)
 416 #else
 417 wxOutputStream& wxDocument::SaveObject(wxOutputStream& stream)
 418 #endif
 419 {
 420     return stream;
 421 }
 422
 423 bool wxDocument::Revert()
 424 {
 425     return false;
 426 }
 427
 428
 429 // Get title, or filename if no title, else unnamed
 430 #if WXWIN_COMPATIBILITY_2_8
 431 bool wxDocument::GetPrintableName(wxString& buf) const
 432 {
 433     // this function can not only be overridden by the user code but also
 434     // called by it so we need to ensure that we return the same thing as
 435     // GetUserReadableName() but we can't call it because this would result in
 436     // an infinite recursion, hence we use the helper DoGetUserReadableName()
 437     buf = DoGetUserReadableName();
 438
 439     return true;
 440 }
 441 #endif // WXWIN_COMPATIBILITY_2_8
 442
 443 wxString wxDocument::GetUserReadableName() const
 444 {
 445 #if WXWIN_COMPATIBILITY_2_8
 446     // we need to call the old virtual function to ensure that the overridden
 447     // version of it is still called
 448     wxString name;
 449     if ( GetPrintableName(name) )
 450         return name;
 451 #endif // WXWIN_COMPATIBILITY_2_8
 452
 453     return DoGetUserReadableName();
 454 }
 455
 456 wxString wxDocument::DoGetUserReadableName() const
 457 {
 458     if ( !m_documentTitle.empty() )
 459         return m_documentTitle;
 460
 461     if ( !m_documentFile.empty() )
 462         return wxFileNameFromPath(m_documentFile);
 463
 464     return _("unnamed");
 465 }
 466
 467 wxWindow *wxDocument::GetDocumentWindow() const
 468 {
 469     wxView * const view = GetFirstView();
 470
 471     return view ? view->GetFrame() : wxTheApp->GetTopWindow();
 472 }
 473
 474 wxCommandProcessor *wxDocument::OnCreateCommandProcessor()
 475 {
 476     return new wxCommandProcessor;
 477 }
 478
 479 // true if safe to close
 480 bool wxDocument::OnSaveModified()
 481 {
 482     if ( IsModified() )
 483     {
 484         switch ( wxMessageBox
 485                  (
 486                     wxString::Format
 487                     (
 488                      _("Do you want to save changes to %s?"),
 489                      GetUserReadableName()
 490                     ),
 491                     wxTheApp->GetAppDisplayName(),
 492                     wxYES_NO | wxCANCEL | wxICON_QUESTION | wxCENTRE,
 493                     wxFindSuitableParent()
 494                  ) )
 495         {
 496             case wxNO:
 497                 Modify(false);
 498                 break;
 499
 500             case wxYES:
 501                 return Save();
 502
 503             case wxCANCEL:
 504                 return false;
 505         }
 506     }
 507
 508     return true;
 509 }
 510
 511 bool wxDocument::Draw(wxDC& WXUNUSED(context))
 512 {
 513     return true;
 514 }
 515
 516 bool wxDocument::AddView(wxView *view)
 517 {
 518     if ( !m_documentViews.Member(view) )
 519     {
 520         m_documentViews.Append(view);
 521         OnChangedViewList();
 522     }
 523     return true;
 524 }
 525
 526 bool wxDocument::RemoveView(wxView *view)
 527 {
 528     (void)m_documentViews.DeleteObject(view);
 529     OnChangedViewList();
 530     return true;
 531 }
 532
 533 bool wxDocument::OnCreate(const wxString& WXUNUSED(path), long flags)
 534 {
 535     return GetDocumentTemplate()->CreateView(this, flags) != NULL;
 536 }
 537
 538 // Called after a view is added or removed.
 539 // The default implementation deletes the document if
 540 // there are no more views.
 541 void wxDocument::OnChangedViewList()
 542 {
 543     if ( m_documentViews.empty() && OnSaveModified() )
 544         delete this;
 545 }
 546
 547 void wxDocument::UpdateAllViews(wxView *sender, wxObject *hint)
 548 {
 549     wxList::compatibility_iterator node = m_documentViews.GetFirst();
 550     while (node)
 551     {
 552         wxView *view = (wxView *)node->GetData();
 553         if (view != sender)
 554             view->OnUpdate(sender, hint);
 555         node = node->GetNext();
 556     }
 557 }
 558
 559 void wxDocument::NotifyClosing()
 560 {
 561     wxList::compatibility_iterator node = m_documentViews.GetFirst();
 562     while (node)
 563     {
 564         wxView *view = (wxView *)node->GetData();
 565         view->OnClosingDocument();
 566         node = node->GetNext();
 567     }
 568 }
 569
 570 void wxDocument::SetFilename(const wxString& filename, bool notifyViews)
 571 {
 572     m_documentFile = filename;
 573     OnChangeFilename(notifyViews);
 574 }
 575
 576 void wxDocument::OnChangeFilename(bool notifyViews)
 577 {
 578     if ( notifyViews )
 579     {
 580         // Notify the views that the filename has changed
 581         wxList::compatibility_iterator node = m_documentViews.GetFirst();
 582         while (node)
 583         {
 584             wxView *view = (wxView *)node->GetData();
 585             view->OnChangeFilename();
 586             node = node->GetNext();
 587         }
 588     }
 589 }
 590
 591 bool wxDocument::DoSaveDocument(const wxString& file)
 592 {
 593 #if wxUSE_STD_IOSTREAM
 594     wxSTD ofstream store(file.mb_str(), wxSTD ios::binary);
 595     if ( !store )
 596 #else
 597     wxFileOutputStream store(file);
 598     if ( store.GetLastError() != wxSTREAM_NO_ERROR )
 599 #endif
 600     {
 601         wxLogError(_("File \"%s\" could not be opened for writing."), file);
 602         return false;
 603     }
 604
 605     if (!SaveObject(store))
 606     {
 607         wxLogError(_("Failed to save document to the file \"%s\"."), file);
 608         return false;
 609     }
 610
 611     return true;
 612 }
 613
 614 bool wxDocument::DoOpenDocument(const wxString& file)
 615 {
 616 #if wxUSE_STD_IOSTREAM
 617     wxSTD ifstream store(file.mb_str(), wxSTD ios::binary);
 618     if ( !store )
 619 #else
 620     wxFileInputStream store(file);
 621     if (store.GetLastError() != wxSTREAM_NO_ERROR || !store.IsOk())
 622 #endif
 623     {
 624         wxLogError(_("File \"%s\" could not be opened for reading."), file);
 625         return false;
 626     }
 627
 628 #if wxUSE_STD_IOSTREAM
 629     LoadObject(store);
 630     if ( !store )
 631 #else
 632     int res = LoadObject(store).GetLastError();
 633     if ( res != wxSTREAM_NO_ERROR && res != wxSTREAM_EOF )
 634 #endif
 635     {
 636         wxLogError(_("Failed to read document from the file \"%s\"."), file);
 637         return false;
 638     }
 639
 640     return true;
 641 }
 642
 643
 644 // ----------------------------------------------------------------------------
 645 // Document view
 646 // ----------------------------------------------------------------------------
 647
 648 wxView::wxView()
 649 {
 650     m_viewDocument = NULL;
 651
 652     m_viewFrame = NULL;
 653
 654     m_docChildFrame = NULL;
 655 }
 656
 657 wxView::~wxView()
 658 {
 659     GetDocumentManager()->ActivateView(this, false);
 660
 661     // reset our frame view first, before removing it from the document as
 662     // SetView(NULL) is a simple call while RemoveView() may result in user
 663     // code being executed and this user code can, for example, show a message
 664     // box which would result in an activation event for m_docChildFrame and so
 665     // could reactivate the view being destroyed -- unless we reset it first
 666     if ( m_docChildFrame && m_docChildFrame->GetView() == this )
 667     {
 668         // prevent it from doing anything with us
 669         m_docChildFrame->SetView(NULL);
 670
 671         // it doesn't make sense to leave the frame alive if its associated
 672         // view doesn't exist any more so unconditionally close it as well
 673         //
 674         // notice that we only get here if m_docChildFrame is non-NULL in the
 675         // first place and it will be always NULL if we're deleted because our
 676         // frame was closed, so this only catches the case of directly deleting
 677         // the view, as it happens if its creation fails in wxDocTemplate::
 678         // CreateView() for example
 679         m_docChildFrame->GetWindow()->Destroy();
 680     }
 681
 682     if ( m_viewDocument )
 683         m_viewDocument->RemoveView(this);
 684 }
 685
 686 void wxView::SetDocChildFrame(wxDocChildFrameAnyBase *docChildFrame)
 687 {
 688     SetFrame(docChildFrame ? docChildFrame->GetWindow() : NULL);
 689     m_docChildFrame = docChildFrame;
 690 }
 691
 692 bool wxView::TryBefore(wxEvent& event)
 693 {
 694     wxDocument * const doc = GetDocument();
 695     return doc && doc->ProcessEventHere(event);
 696 }
 697
 698 void wxView::OnActivateView(bool WXUNUSED(activate),
 699                             wxView *WXUNUSED(activeView),
 700                             wxView *WXUNUSED(deactiveView))
 701 {
 702 }
 703
 704 void wxView::OnPrint(wxDC *dc, wxObject *WXUNUSED(info))
 705 {
 706     OnDraw(dc);
 707 }
 708
 709 void wxView::OnUpdate(wxView *WXUNUSED(sender), wxObject *WXUNUSED(hint))
 710 {
 711 }
 712
 713 void wxView::OnChangeFilename()
 714 {
 715     // GetFrame can return wxWindow rather than wxTopLevelWindow due to
 716     // generic MDI implementation so use SetLabel rather than SetTitle.
 717     // It should cause SetTitle() for top level windows.
 718     wxWindow *win = GetFrame();
 719     if (!win) return;
 720
 721     wxDocument *doc = GetDocument();
 722     if (!doc) return;
 723
 724     win->SetLabel(doc->GetUserReadableName());
 725 }
 726
 727 void wxView::SetDocument(wxDocument *doc)
 728 {
 729     m_viewDocument = doc;
 730     if (doc)
 731         doc->AddView(this);
 732 }
 733
 734 bool wxView::Close(bool deleteWindow)
 735 {
 736     return OnClose(deleteWindow);
 737 }
 738
 739 void wxView::Activate(bool activate)
 740 {
 741     if (GetDocument() && GetDocumentManager())
 742     {
 743         OnActivateView(activate, this, GetDocumentManager()->GetCurrentView());
 744         GetDocumentManager()->ActivateView(this, activate);
 745     }
 746 }
 747
 748 bool wxView::OnClose(bool WXUNUSED(deleteWindow))
 749 {
 750     return GetDocument() ? GetDocument()->Close() : true;
 751 }
 752
 753 #if wxUSE_PRINTING_ARCHITECTURE
 754 wxPrintout *wxView::OnCreatePrintout()
 755 {
 756     return new wxDocPrintout(this);
 757 }
 758 #endif // wxUSE_PRINTING_ARCHITECTURE
 759
 760 // ----------------------------------------------------------------------------
 761 // wxDocTemplate
 762 // ----------------------------------------------------------------------------
 763
 764 wxDocTemplate::wxDocTemplate(wxDocManager *manager,
 765                              const wxString& descr,
 766                              const wxString& filter,
 767                              const wxString& dir,
 768                              const wxString& ext,
 769                              const wxString& docTypeName,
 770                              const wxString& viewTypeName,
 771                              wxClassInfo *docClassInfo,
 772                              wxClassInfo *viewClassInfo,
 773                              long flags)
 774 {
 775     m_documentManager = manager;
 776     m_description = descr;
 777     m_directory = dir;
 778     m_defaultExt = ext;
 779     m_fileFilter = filter;
 780     m_flags = flags;
 781     m_docTypeName = docTypeName;
 782     m_viewTypeName = viewTypeName;
 783     m_documentManager->AssociateTemplate(this);
 784
 785     m_docClassInfo = docClassInfo;
 786     m_viewClassInfo = viewClassInfo;
 787 }
 788
 789 wxDocTemplate::~wxDocTemplate()
 790 {
 791     m_documentManager->DisassociateTemplate(this);
 792 }
 793
 794 // Tries to dynamically construct an object of the right class.
 795 wxDocument *wxDocTemplate::CreateDocument(const wxString& path, long flags)
 796 {
 797     // InitDocument() is supposed to delete the document object if its
 798     // initialization fails so don't use wxScopedPtr<> here: this is fragile
 799     // but unavoidable because the default implementation uses CreateView()
 800     // which may -- or not -- create a wxView and if it does create it and its
 801     // initialization fails then the view destructor will delete the document
 802     // (via RemoveView()) and as we can't distinguish between the two cases we
 803     // just have to assume that it always deletes it in case of failure
 804     wxDocument * const doc = DoCreateDocument();
 805
 806     return doc && InitDocument(doc, path, flags) ? doc : NULL;
 807 }
 808
 809 bool
 810 wxDocTemplate::InitDocument(wxDocument* doc, const wxString& path, long flags)
 811 {
 812     doc->SetFilename(path);
 813     doc->SetDocumentTemplate(this);
 814     GetDocumentManager()->AddDocument(doc);
 815     doc->SetCommandProcessor(doc->OnCreateCommandProcessor());
 816
 817     if (doc->OnCreate(path, flags))
 818         return true;
 819
 820     if (GetDocumentManager()->GetDocuments().Member(doc))
 821         doc->DeleteAllViews();
 822     return false;
 823 }
 824
 825 wxView *wxDocTemplate::CreateView(wxDocument *doc, long flags)
 826 {
 827     wxScopedPtr<wxView> view(DoCreateView());
 828     if ( !view )
 829         return NULL;
 830
 831     view->SetDocument(doc);
 832     if ( !view->OnCreate(doc, flags) )
 833         return NULL;
 834
 835     return view.release();
 836 }
 837
 838 // The default (very primitive) format detection: check is the extension is
 839 // that of the template
 840 bool wxDocTemplate::FileMatchesTemplate(const wxString& path)
 841 {
 842     wxStringTokenizer parser (GetFileFilter(), wxT(";"));
 843     wxString anything = wxT ("*");
 844     while (parser.HasMoreTokens())
 845     {
 846         wxString filter = parser.GetNextToken();
 847         wxString filterExt = FindExtension (filter);
 848         if ( filter.IsSameAs (anything)    ||
 849              filterExt.IsSameAs (anything) ||
 850              filterExt.IsSameAs (FindExtension (path)) )
 851             return true;
 852     }
 853     return GetDefaultExtension().IsSameAs(FindExtension(path));
 854 }
 855
 856 wxDocument *wxDocTemplate::DoCreateDocument()
 857 {
 858     if (!m_docClassInfo)
 859         return NULL;
 860
 861     return static_cast<wxDocument *>(m_docClassInfo->CreateObject());
 862 }
 863
 864 wxView *wxDocTemplate::DoCreateView()
 865 {
 866     if (!m_viewClassInfo)
 867         return NULL;
 868
 869     return static_cast<wxView *>(m_viewClassInfo->CreateObject());
 870 }
 871
 872 // ----------------------------------------------------------------------------
 873 // wxDocManager
 874 // ----------------------------------------------------------------------------
 875
 876 BEGIN_EVENT_TABLE(wxDocManager, wxEvtHandler)
 877     EVT_MENU(wxID_OPEN, wxDocManager::OnFileOpen)
 878     EVT_MENU(wxID_CLOSE, wxDocManager::OnFileClose)
 879     EVT_MENU(wxID_CLOSE_ALL, wxDocManager::OnFileCloseAll)
 880     EVT_MENU(wxID_REVERT, wxDocManager::OnFileRevert)
 881     EVT_MENU(wxID_NEW, wxDocManager::OnFileNew)
 882     EVT_MENU(wxID_SAVE, wxDocManager::OnFileSave)
 883     EVT_MENU(wxID_SAVEAS, wxDocManager::OnFileSaveAs)
 884     EVT_MENU(wxID_UNDO, wxDocManager::OnUndo)
 885     EVT_MENU(wxID_REDO, wxDocManager::OnRedo)
 886
 887     EVT_UPDATE_UI(wxID_OPEN, wxDocManager::OnUpdateFileOpen)
 888     EVT_UPDATE_UI(wxID_CLOSE, wxDocManager::OnUpdateDisableIfNoDoc)
 889     EVT_UPDATE_UI(wxID_CLOSE_ALL, wxDocManager::OnUpdateDisableIfNoDoc)
 890     EVT_UPDATE_UI(wxID_REVERT, wxDocManager::OnUpdateDisableIfNoDoc)
 891     EVT_UPDATE_UI(wxID_NEW, wxDocManager::OnUpdateFileNew)
 892     EVT_UPDATE_UI(wxID_SAVE, wxDocManager::OnUpdateFileSave)
 893     EVT_UPDATE_UI(wxID_SAVEAS, wxDocManager::OnUpdateDisableIfNoDoc)
 894     EVT_UPDATE_UI(wxID_UNDO, wxDocManager::OnUpdateUndo)
 895     EVT_UPDATE_UI(wxID_REDO, wxDocManager::OnUpdateRedo)
 896
 897 #if wxUSE_PRINTING_ARCHITECTURE
 898     EVT_MENU(wxID_PRINT, wxDocManager::OnPrint)
 899     EVT_MENU(wxID_PREVIEW, wxDocManager::OnPreview)
 900
 901     EVT_UPDATE_UI(wxID_PRINT, wxDocManager::OnUpdateDisableIfNoDoc)
 902     EVT_UPDATE_UI(wxID_PREVIEW, wxDocManager::OnUpdateDisableIfNoDoc)
 903 #endif
 904 END_EVENT_TABLE()
 905
 906 wxDocManager* wxDocManager::sm_docManager = NULL;
 907
 908 wxDocManager::wxDocManager(long WXUNUSED(flags), bool initialize)
 909 {
 910     wxASSERT_MSG( !sm_docManager, "multiple wxDocManagers not allowed" );
 911
 912     sm_docManager = this;
 913
 914     m_defaultDocumentNameCounter = 1;
 915     m_currentView = NULL;
 916     m_maxDocsOpen = INT_MAX;
 917     m_fileHistory = NULL;
 918     if ( initialize )
 919         Initialize();
 920 }
 921
 922 wxDocManager::~wxDocManager()
 923 {
 924     Clear();
 925     delete m_fileHistory;
 926     sm_docManager = NULL;
 927 }
 928
 929 // closes the specified document
 930 bool wxDocManager::CloseDocument(wxDocument* doc, bool force)
 931 {
 932     if ( !doc->Close() && !force )
 933         return false;
 934
 935     // Implicitly deletes the document when
 936     // the last view is deleted
 937     doc->DeleteAllViews();
 938
 939     // Check we're really deleted
 940     if (m_docs.Member(doc))
 941         delete doc;
 942
 943     return true;
 944 }
 945
 946 bool wxDocManager::CloseDocuments(bool force)
 947 {
 948     wxList::compatibility_iterator node = m_docs.GetFirst();
 949     while (node)
 950     {
 951         wxDocument *doc = (wxDocument *)node->GetData();
 952         wxList::compatibility_iterator next = node->GetNext();
 953
 954         if (!CloseDocument(doc, force))
 955             return false;
 956
 957         // This assumes that documents are not connected in
 958         // any way, i.e. deleting one document does NOT
 959         // delete another.
 960         node = next;
 961     }
 962     return true;
 963 }
 964
 965 bool wxDocManager::Clear(bool force)
 966 {
 967     if (!CloseDocuments(force))
 968         return false;
 969
 970     m_currentView = NULL;
 971
 972     wxList::compatibility_iterator node = m_templates.GetFirst();
 973     while (node)
 974     {
 975         wxDocTemplate *templ = (wxDocTemplate*) node->GetData();
 976         wxList::compatibility_iterator next = node->GetNext();
 977         delete templ;
 978         node = next;
 979     }
 980     return true;
 981 }
 982
 983 bool wxDocManager::Initialize()
 984 {
 985     m_fileHistory = OnCreateFileHistory();
 986     return true;
 987 }
 988
 989 wxString wxDocManager::GetLastDirectory() const
 990 {
 991     // use the system-dependent default location for the document files if
 992     // we're being opened for the first time
 993     if ( m_lastDirectory.empty() )
 994     {
 995         wxDocManager * const self = const_cast<wxDocManager *>(this);
 996         self->m_lastDirectory = wxStandardPaths::Get().GetAppDocumentsDir();
 997     }
 998
 999     return m_lastDirectory;
1000 }
1001
1002 wxFileHistory *wxDocManager::OnCreateFileHistory()
1003 {
1004     return new wxFileHistory;
1005 }
1006
1007 void wxDocManager::OnFileClose(wxCommandEvent& WXUNUSED(event))
1008 {
1009     wxDocument *doc = GetCurrentDocument();
1010     if (!doc)
1011         return;
1012     if (doc->Close())
1013     {
1014         doc->DeleteAllViews();
1015         if (m_docs.Member(doc))
1016             delete doc;
1017     }
1018 }
1019
1020 void wxDocManager::OnFileCloseAll(wxCommandEvent& WXUNUSED(event))
1021 {
1022     CloseDocuments(false);
1023 }
1024
1025 void wxDocManager::OnFileNew(wxCommandEvent& WXUNUSED(event))
1026 {
1027     CreateNewDocument();
1028 }
1029
1030 void wxDocManager::OnFileOpen(wxCommandEvent& WXUNUSED(event))
1031 {
1032     if ( !CreateDocument("") )
1033     {
1034         OnOpenFileFailure();
1035     }
1036 }
1037
1038 void wxDocManager::OnFileRevert(wxCommandEvent& WXUNUSED(event))
1039 {
1040     wxDocument *doc = GetCurrentDocument();
1041     if (!doc)
1042         return;
1043     doc->Revert();
1044 }
1045
1046 void wxDocManager::OnFileSave(wxCommandEvent& WXUNUSED(event))
1047 {
1048     wxDocument *doc = GetCurrentDocument();
1049     if (!doc)
1050         return;
1051     doc->Save();
1052 }
1053
1054 void wxDocManager::OnFileSaveAs(wxCommandEvent& WXUNUSED(event))
1055 {
1056     wxDocument *doc = GetCurrentDocument();
1057     if (!doc)
1058         return;
1059     doc->SaveAs();
1060 }
1061
1062 void wxDocManager::OnPrint(wxCommandEvent& WXUNUSED(event))
1063 {
1064 #if wxUSE_PRINTING_ARCHITECTURE
1065     wxView *view = GetActiveView();
1066     if (!view)
1067         return;
1068
1069     wxPrintout *printout = view->OnCreatePrintout();
1070     if (printout)
1071     {
1072         wxPrinter printer;
1073         printer.Print(view->GetFrame(), printout, true);
1074
1075         delete printout;
1076     }
1077 #endif // wxUSE_PRINTING_ARCHITECTURE
1078 }
1079
1080 void wxDocManager::OnPreview(wxCommandEvent& WXUNUSED(event))
1081 {
1082 #if wxUSE_PRINTING_ARCHITECTURE
1083     wxView *view = GetActiveView();
1084     if (!view)
1085         return;
1086
1087     wxPrintout *printout = view->OnCreatePrintout();
1088     if (printout)
1089     {
1090         // Pass two printout objects: for preview, and possible printing.
1091         wxPrintPreviewBase *
1092             preview = new wxPrintPreview(printout, view->OnCreatePrintout());
1093         if ( !preview->Ok() )
1094         {
1095             delete preview;
1096             wxLogError(_("Print preview creation failed."));
1097             return;
1098         }
1099
1100         wxPreviewFrame *
1101             frame = new wxPreviewFrame(preview, wxTheApp->GetTopWindow(),
1102                                        _("Print Preview"));
1103         frame->Centre(wxBOTH);
1104         frame->Initialize();
1105         frame->Show(true);
1106     }
1107 #endif // wxUSE_PRINTING_ARCHITECTURE
1108 }
1109
1110 void wxDocManager::OnUndo(wxCommandEvent& event)
1111 {
1112     wxCommandProcessor * const cmdproc = GetCurrentCommandProcessor();
1113     if ( !cmdproc )
1114     {
1115         event.Skip();
1116         return;
1117     }
1118
1119     cmdproc->Undo();
1120 }
1121
1122 void wxDocManager::OnRedo(wxCommandEvent& event)
1123 {
1124     wxCommandProcessor * const cmdproc = GetCurrentCommandProcessor();
1125     if ( !cmdproc )
1126     {
1127         event.Skip();
1128         return;
1129     }
1130
1131     cmdproc->Redo();
1132 }
1133
1134 // Handlers for UI update commands
1135
1136 void wxDocManager::OnUpdateFileOpen(wxUpdateUIEvent& event)
1137 {
1138     // CreateDocument() (which is called from OnFileOpen) may succeed
1139     // only when there is at least a template:
1140     event.Enable( GetTemplates().GetCount()>0 );
1141 }
1142
1143 void wxDocManager::OnUpdateDisableIfNoDoc(wxUpdateUIEvent& event)
1144 {
1145     event.Enable( GetCurrentDocument() != NULL );
1146 }
1147
1148 void wxDocManager::OnUpdateFileNew(wxUpdateUIEvent& event)
1149 {
1150     // CreateDocument() (which is called from OnFileNew) may succeed
1151     // only when there is at least a template:
1152     event.Enable( GetTemplates().GetCount()>0 );
1153 }
1154
1155 void wxDocManager::OnUpdateFileSave(wxUpdateUIEvent& event)
1156 {
1157     wxDocument * const doc = GetCurrentDocument();
1158     event.Enable( doc && !doc->AlreadySaved() );
1159 }
1160
1161 void wxDocManager::OnUpdateUndo(wxUpdateUIEvent& event)
1162 {
1163     wxCommandProcessor * const cmdproc = GetCurrentCommandProcessor();
1164     if ( !cmdproc )
1165     {
1166         event.Enable(false);
1167         return;
1168     }
1169
1170     event.Enable(cmdproc->CanUndo());
1171     cmdproc->SetMenuStrings();
1172 }
1173
1174 void wxDocManager::OnUpdateRedo(wxUpdateUIEvent& event)
1175 {
1176     wxCommandProcessor * const cmdproc = GetCurrentCommandProcessor();
1177     if ( !cmdproc )
1178     {
1179         event.Enable(false);
1180         return;
1181     }
1182
1183     event.Enable(cmdproc->CanRedo());
1184     cmdproc->SetMenuStrings();
1185 }
1186
1187 wxView *wxDocManager::GetActiveView() const
1188 {
1189     wxView *view = GetCurrentView();
1190
1191     if ( !view && !m_docs.empty() )
1192     {
1193         // if we have exactly one document, consider its view to be the current
1194         // one
1195         //
1196         // VZ: I'm not exactly sure why is this needed but this is how this
1197         //     code used to behave before the bug #9518 was fixed and it seems
1198         //     safer to preserve the old logic
1199         wxList::compatibility_iterator node = m_docs.GetFirst();
1200         if ( !node->GetNext() )
1201         {
1202             wxDocument *doc = static_cast<wxDocument *>(node->GetData());
1203             view = doc->GetFirstView();
1204         }
1205         //else: we have more than one document
1206     }
1207
1208     return view;
1209 }
1210
1211 bool wxDocManager::TryBefore(wxEvent& event)
1212 {
1213     wxView * const view = GetActiveView();
1214     return view && view->ProcessEventHere(event);
1215 }
1216
1217 namespace
1218 {
1219
1220 // helper function: return only the visible templates
1221 wxDocTemplates GetVisibleTemplates(const wxList& allTemplates)
1222 {
1223     // select only the visible templates
1224     const size_t totalNumTemplates = allTemplates.GetCount();
1225     wxDocTemplates templates;
1226     if ( totalNumTemplates )
1227     {
1228         templates.reserve(totalNumTemplates);
1229
1230         for ( wxList::const_iterator i = allTemplates.begin(),
1231                                    end = allTemplates.end();
1232               i != end;
1233               ++i )
1234         {
1235             wxDocTemplate * const temp = (wxDocTemplate *)*i;
1236             if ( temp->IsVisible() )
1237                 templates.push_back(temp);
1238         }
1239     }
1240
1241     return templates;
1242 }
1243
1244 } // anonymous namespace
1245
1246 wxDocument *wxDocManager::CreateDocument(const wxString& pathOrig, long flags)
1247 {
1248     // this ought to be const but SelectDocumentType/Path() are not
1249     // const-correct and can't be changed as, being virtual, this risks
1250     // breaking user code overriding them
1251     wxDocTemplates templates(GetVisibleTemplates(m_templates));
1252     const size_t numTemplates = templates.size();
1253     if ( !numTemplates )
1254     {
1255         // no templates can be used, can't create document
1256         return NULL;
1257     }
1258
1259
1260     // normally user should select the template to use but wxDOC_SILENT flag we
1261     // choose one ourselves
1262     wxString path = pathOrig;   // may be modified below
1263     wxDocTemplate *temp;
1264     if ( flags & wxDOC_SILENT )
1265     {
1266         wxASSERT_MSG( !path.empty(),
1267                       "using empty path with wxDOC_SILENT doesn't make sense" );
1268
1269         temp = FindTemplateForPath(path);
1270         if ( !temp )
1271         {
1272             wxLogWarning(_("The format of file '%s' couldn't be determined."),
1273                          path);
1274         }
1275     }
1276     else // not silent, ask the user
1277     {
1278         // for the new file we need just the template, for an existing one we
1279         // need the template and the path, unless it's already specified
1280         if ( (flags & wxDOC_NEW) || !path.empty() )
1281             temp = SelectDocumentType(&templates[0], numTemplates);
1282         else
1283             temp = SelectDocumentPath(&templates[0], numTemplates, path, flags);
1284     }
1285
1286     if ( !temp )
1287         return NULL;
1288
1289     // check whether the document with this path is already opened
1290     if ( !path.empty() )
1291     {
1292         const wxFileName fn(path);
1293         for ( wxList::const_iterator i = m_docs.begin(); i != m_docs.end(); ++i )
1294         {
1295             wxDocument * const doc = (wxDocument*)*i;
1296
1297             if ( fn == doc->GetFilename() )
1298             {
1299                 // file already open, just activate it and return
1300                 if ( doc->GetFirstView() )
1301                 {
1302                     ActivateView(doc->GetFirstView());
1303                     if ( doc->GetDocumentWindow() )
1304                         doc->GetDocumentWindow()->SetFocus();
1305                     return doc;
1306                 }
1307             }
1308         }
1309     }
1310
1311
1312     // no, we need to create a new document
1313
1314
1315     // if we've reached the max number of docs, close the first one.
1316     if ( (int)GetDocuments().GetCount() >= m_maxDocsOpen )
1317     {
1318         if ( !CloseDocument((wxDocument *)GetDocuments().GetFirst()->GetData()) )
1319         {
1320             // can't open the new document if closing the old one failed
1321             return NULL;
1322         }
1323     }
1324
1325
1326     // do create and initialize the new document finally
1327     wxDocument * const docNew = temp->CreateDocument(path, flags);
1328     if ( !docNew )
1329         return NULL;
1330
1331     docNew->SetDocumentName(temp->GetDocumentName());
1332     docNew->SetDocumentTemplate(temp);
1333
1334     wxTRY
1335     {
1336         // call the appropriate function depending on whether we're creating a
1337         // new file or opening an existing one
1338         if ( !(flags & wxDOC_NEW ? docNew->OnNewDocument()
1339                                  : docNew->OnOpenDocument(path)) )
1340         {
1341             docNew->DeleteAllViews();
1342             return NULL;
1343         }
1344     }
1345     wxCATCH_ALL( docNew->DeleteAllViews(); throw; )
1346
1347     // add the successfully opened file to MRU, but only if we're going to be
1348     // able to reopen it successfully later which requires the template for
1349     // this document to be retrievable from the file extension
1350     if ( !(flags & wxDOC_NEW) && temp->FileMatchesTemplate(path) )
1351         AddFileToHistory(path);
1352
1353     return docNew;
1354 }
1355
1356 wxView *wxDocManager::CreateView(wxDocument *doc, long flags)
1357 {
1358     wxDocTemplates templates(GetVisibleTemplates(m_templates));
1359     const size_t numTemplates = templates.size();
1360
1361     if ( numTemplates == 0 )
1362         return NULL;
1363
1364     wxDocTemplate * const
1365     temp = numTemplates == 1 ? templates[0]
1366                              : SelectViewType(&templates[0], numTemplates);
1367
1368     if ( !temp )
1369         return NULL;
1370
1371     wxView *view = temp->CreateView(doc, flags);
1372     if ( view )
1373         view->SetViewName(temp->GetViewName());
1374     return view;
1375 }
1376
1377 // Not yet implemented
1378 void
1379 wxDocManager::DeleteTemplate(wxDocTemplate *WXUNUSED(temp), long WXUNUSED(flags))
1380 {
1381 }
1382
1383 // Not yet implemented
1384 bool wxDocManager::FlushDoc(wxDocument *WXUNUSED(doc))
1385 {
1386     return false;
1387 }
1388
1389 wxDocument *wxDocManager::GetCurrentDocument() const
1390 {
1391     wxView * const view = GetActiveView();
1392     return view ? view->GetDocument() : NULL;
1393 }
1394
1395 wxCommandProcessor *wxDocManager::GetCurrentCommandProcessor() const
1396 {
1397     wxDocument * const doc = GetCurrentDocument();
1398     return doc ? doc->GetCommandProcessor() : NULL;
1399 }
1400
1401 // Make a default name for a new document
1402 #if WXWIN_COMPATIBILITY_2_8
1403 bool wxDocManager::MakeDefaultName(wxString& WXUNUSED(name))
1404 {
1405     // we consider that this function can only be overridden by the user code,
1406     // not called by it as it only makes sense to call it internally, so we
1407     // don't bother to return anything from here
1408     return false;
1409 }
1410 #endif // WXWIN_COMPATIBILITY_2_8
1411
1412 wxString wxDocManager::MakeNewDocumentName()
1413 {
1414     wxString name;
1415
1416 #if WXWIN_COMPATIBILITY_2_8
1417     if ( !MakeDefaultName(name) )
1418 #endif // WXWIN_COMPATIBILITY_2_8
1419     {
1420         name.Printf(_("unnamed%d"), m_defaultDocumentNameCounter);
1421         m_defaultDocumentNameCounter++;
1422     }
1423
1424     return name;
1425 }
1426
1427 // Make a frame title (override this to do something different)
1428 // If docName is empty, a document is not currently active.
1429 wxString wxDocManager::MakeFrameTitle(wxDocument* doc)
1430 {
1431     wxString appName = wxTheApp->GetAppDisplayName();
1432     wxString title;
1433     if (!doc)
1434         title = appName;
1435     else
1436     {
1437         wxString docName = doc->GetUserReadableName();
1438         title = docName + wxString(_(" - ")) + appName;
1439     }
1440     return title;
1441 }
1442
1443
1444 // Not yet implemented
1445 wxDocTemplate *wxDocManager::MatchTemplate(const wxString& WXUNUSED(path))
1446 {
1447     return NULL;
1448 }
1449
1450 // File history management
1451 void wxDocManager::AddFileToHistory(const wxString& file)
1452 {
1453     if (m_fileHistory)
1454         m_fileHistory->AddFileToHistory(file);
1455 }
1456
1457 void wxDocManager::RemoveFileFromHistory(size_t i)
1458 {
1459     if (m_fileHistory)
1460         m_fileHistory->RemoveFileFromHistory(i);
1461 }
1462
1463 wxString wxDocManager::GetHistoryFile(size_t i) const
1464 {
1465     wxString histFile;
1466
1467     if (m_fileHistory)
1468         histFile = m_fileHistory->GetHistoryFile(i);
1469
1470     return histFile;
1471 }
1472
1473 void wxDocManager::FileHistoryUseMenu(wxMenu *menu)
1474 {
1475     if (m_fileHistory)
1476         m_fileHistory->UseMenu(menu);
1477 }
1478
1479 void wxDocManager::FileHistoryRemoveMenu(wxMenu *menu)
1480 {
1481     if (m_fileHistory)
1482         m_fileHistory->RemoveMenu(menu);
1483 }
1484
1485 #if wxUSE_CONFIG
1486 void wxDocManager::FileHistoryLoad(const wxConfigBase& config)
1487 {
1488     if (m_fileHistory)
1489         m_fileHistory->Load(config);
1490 }
1491
1492 void wxDocManager::FileHistorySave(wxConfigBase& config)
1493 {
1494     if (m_fileHistory)
1495         m_fileHistory->Save(config);
1496 }
1497 #endif
1498
1499 void wxDocManager::FileHistoryAddFilesToMenu(wxMenu* menu)
1500 {
1501     if (m_fileHistory)
1502         m_fileHistory->AddFilesToMenu(menu);
1503 }
1504
1505 void wxDocManager::FileHistoryAddFilesToMenu()
1506 {
1507     if (m_fileHistory)
1508         m_fileHistory->AddFilesToMenu();
1509 }
1510
1511 size_t wxDocManager::GetHistoryFilesCount() const
1512 {
1513     return m_fileHistory ? m_fileHistory->GetCount() : 0;
1514 }
1515
1516
1517 // Find out the document template via matching in the document file format
1518 // against that of the template
1519 wxDocTemplate *wxDocManager::FindTemplateForPath(const wxString& path)
1520 {
1521     wxDocTemplate *theTemplate = NULL;
1522
1523     // Find the template which this extension corresponds to
1524     for (size_t i = 0; i < m_templates.GetCount(); i++)
1525     {
1526         wxDocTemplate *temp = (wxDocTemplate *)m_templates.Item(i)->GetData();
1527         if ( temp->FileMatchesTemplate(path) )
1528         {
1529             theTemplate = temp;
1530             break;
1531         }
1532     }
1533     return theTemplate;
1534 }
1535
1536 // Prompts user to open a file, using file specs in templates.
1537 // Must extend the file selector dialog or implement own; OR
1538 // match the extension to the template extension.
1539
1540 wxDocTemplate *wxDocManager::SelectDocumentPath(wxDocTemplate **templates,
1541                                                 int noTemplates,
1542                                                 wxString& path,
1543                                                 long WXUNUSED(flags),
1544                                                 bool WXUNUSED(save))
1545 {
1546 #ifdef wxHAS_MULTIPLE_FILEDLG_FILTERS
1547     wxString descrBuf;
1548
1549     for (int i = 0; i < noTemplates; i++)
1550     {
1551         if (templates[i]->IsVisible())
1552         {
1553             // add a '|' to separate this filter from the previous one
1554             if ( !descrBuf.empty() )
1555                 descrBuf << wxT('|');
1556
1557             descrBuf << templates[i]->GetDescription()
1558                 << wxT(" (") << templates[i]->GetFileFilter() << wxT(") |")
1559                 << templates[i]->GetFileFilter();
1560         }
1561     }
1562 #else
1563     wxString descrBuf = wxT("*.*");
1564     wxUnusedVar(noTemplates);
1565 #endif
1566
1567     int FilterIndex = -1;
1568
1569     wxWindow* parent = wxFindSuitableParent();
1570
1571     wxString pathTmp = wxFileSelectorEx(_("Open File"),
1572                                         GetLastDirectory(),
1573                                         wxEmptyString,
1574                                         &FilterIndex,
1575                                         descrBuf,
1576                                         0,
1577                                         parent);
1578
1579     wxDocTemplate *theTemplate = NULL;
1580     if (!pathTmp.empty())
1581     {
1582         if (!wxFileExists(pathTmp))
1583         {
1584             wxString msgTitle;
1585             if (!wxTheApp->GetAppDisplayName().empty())
1586                 msgTitle = wxTheApp->GetAppDisplayName();
1587             else
1588                 msgTitle = wxString(_("File error"));
1589
1590             wxMessageBox(_("Sorry, could not open this file."),
1591                          msgTitle,
1592                          wxOK | wxICON_EXCLAMATION | wxCENTRE,
1593                          parent);
1594
1595             path = wxEmptyString;
1596             return NULL;
1597         }
1598
1599         SetLastDirectory(wxPathOnly(pathTmp));
1600
1601         path = pathTmp;
1602
1603         // first choose the template using the extension, if this fails (i.e.
1604         // wxFileSelectorEx() didn't fill it), then use the path
1605         if ( FilterIndex != -1 )
1606             theTemplate = templates[FilterIndex];
1607         if ( !theTemplate )
1608             theTemplate = FindTemplateForPath(path);
1609         if ( !theTemplate )
1610         {
1611             // Since we do not add files with non-default extensions to the
1612             // file history this can only happen if the application changes the
1613             // allowed templates in runtime.
1614             wxMessageBox(_("Sorry, the format for this file is unknown."),
1615                          _("Open File"),
1616                          wxOK | wxICON_EXCLAMATION | wxCENTRE,
1617                          parent);
1618         }
1619     }
1620     else
1621     {
1622         path.clear();
1623     }
1624
1625     return theTemplate;
1626 }
1627
1628 wxDocTemplate *wxDocManager::SelectDocumentType(wxDocTemplate **templates,
1629                                                 int noTemplates, bool sort)
1630 {
1631     wxArrayString strings;
1632     wxScopedArray<wxDocTemplate *> data(new wxDocTemplate *[noTemplates]);
1633     int i;
1634     int n = 0;
1635
1636     for (i = 0; i < noTemplates; i++)
1637     {
1638         if (templates[i]->IsVisible())
1639         {
1640             int j;
1641             bool want = true;
1642             for (j = 0; j < n; j++)
1643             {
1644                 //filter out NOT unique documents + view combinations
1645                 if ( templates[i]->m_docTypeName == data[j]->m_docTypeName &&
1646                      templates[i]->m_viewTypeName == data[j]->m_viewTypeName
1647                    )
1648                     want = false;
1649             }
1650
1651             if ( want )
1652             {
1653                 strings.Add(templates[i]->m_description);
1654
1655                 data[n] = templates[i];
1656                 n ++;
1657             }
1658         }
1659     }  // for
1660
1661     if (sort)
1662     {
1663         strings.Sort(); // ascending sort
1664         // Yes, this will be slow, but template lists
1665         // are typically short.
1666         int j;
1667         n = strings.Count();
1668         for (i = 0; i < n; i++)
1669         {
1670             for (j = 0; j < noTemplates; j++)
1671             {
1672                 if (strings[i] == templates[j]->m_description)
1673                     data[i] = templates[j];
1674             }
1675         }
1676     }
1677
1678     wxDocTemplate *theTemplate;
1679
1680     switch ( n )
1681     {
1682         case 0:
1683             // no visible templates, hence nothing to choose from
1684             theTemplate = NULL;
1685             break;
1686
1687         case 1:
1688             // don't propose the user to choose if he has no choice
1689             theTemplate = data[0];
1690             break;
1691
1692         default:
1693             // propose the user to choose one of several
1694             theTemplate = (wxDocTemplate *)wxGetSingleChoiceData
1695                           (
1696                             _("Select a document template"),
1697                             _("Templates"),
1698                             strings,
1699                             (void **)data.get(),
1700                             wxFindSuitableParent()
1701                           );
1702     }
1703
1704     return theTemplate;
1705 }
1706
1707 wxDocTemplate *wxDocManager::SelectViewType(wxDocTemplate **templates,
1708                                             int noTemplates, bool sort)
1709 {
1710     wxArrayString strings;
1711     wxScopedArray<wxDocTemplate *> data(new wxDocTemplate *[noTemplates]);
1712     int i;
1713     int n = 0;
1714
1715     for (i = 0; i < noTemplates; i++)
1716     {
1717         wxDocTemplate *templ = templates[i];
1718         if ( templ->IsVisible() && !templ->GetViewName().empty() )
1719         {
1720             int j;
1721             bool want = true;
1722             for (j = 0; j < n; j++)
1723             {
1724                 //filter out NOT unique views
1725                 if ( templates[i]->m_viewTypeName == data[j]->m_viewTypeName )
1726                     want = false;
1727             }
1728
1729             if ( want )
1730             {
1731                 strings.Add(templ->m_viewTypeName);
1732                 data[n] = templ;
1733                 n ++;
1734             }
1735         }
1736     }
1737
1738     if (sort)
1739     {
1740         strings.Sort(); // ascending sort
1741         // Yes, this will be slow, but template lists
1742         // are typically short.
1743         int j;
1744         n = strings.Count();
1745         for (i = 0; i < n; i++)
1746         {
1747             for (j = 0; j < noTemplates; j++)
1748             {
1749                 if (strings[i] == templates[j]->m_viewTypeName)
1750                     data[i] = templates[j];
1751             }
1752         }
1753     }
1754
1755     wxDocTemplate *theTemplate;
1756
1757     // the same logic as above
1758     switch ( n )
1759     {
1760         case 0:
1761             theTemplate = NULL;
1762             break;
1763
1764         case 1:
1765             theTemplate = data[0];
1766             break;
1767
1768         default:
1769             theTemplate = (wxDocTemplate *)wxGetSingleChoiceData
1770                           (
1771                             _("Select a document view"),
1772                             _("Views"),
1773                             strings,
1774                             (void **)data.get(),
1775                             wxFindSuitableParent()
1776                           );
1777
1778     }
1779
1780     return theTemplate;
1781 }
1782
1783 void wxDocManager::AssociateTemplate(wxDocTemplate *temp)
1784 {
1785     if (!m_templates.Member(temp))
1786         m_templates.Append(temp);
1787 }
1788
1789 void wxDocManager::DisassociateTemplate(wxDocTemplate *temp)
1790 {
1791     m_templates.DeleteObject(temp);
1792 }
1793
1794 // Add and remove a document from the manager's list
1795 void wxDocManager::AddDocument(wxDocument *doc)
1796 {
1797     if (!m_docs.Member(doc))
1798         m_docs.Append(doc);
1799 }
1800
1801 void wxDocManager::RemoveDocument(wxDocument *doc)
1802 {
1803     m_docs.DeleteObject(doc);
1804 }
1805
1806 // Views or windows should inform the document manager
1807 // when a view is going in or out of focus
1808 void wxDocManager::ActivateView(wxView *view, bool activate)
1809 {
1810     if ( activate )
1811     {
1812         m_currentView = view;
1813     }
1814     else // deactivate
1815     {
1816         if ( m_currentView == view )
1817         {
1818             // don't keep stale pointer
1819             m_currentView = NULL;
1820         }
1821     }
1822 }
1823
1824 // ----------------------------------------------------------------------------
1825 // wxDocChildFrameAnyBase
1826 // ----------------------------------------------------------------------------
1827
1828 bool wxDocChildFrameAnyBase::CloseView(wxCloseEvent& event)
1829 {
1830     if ( m_childView )
1831     {
1832         if ( event.CanVeto() && !m_childView->Close(false) )
1833         {
1834             event.Veto();
1835             return false;
1836         }
1837
1838         m_childView->Activate(false);
1839
1840         // it is important to reset m_childView frame pointer to NULL before
1841         // deleting it because while normally it is the frame which deletes the
1842         // view when it's closed, the view also closes the frame if it is
1843         // deleted directly not by us as indicated by its doc child frame
1844         // pointer still being set
1845         m_childView->SetDocChildFrame(NULL);
1846         delete m_childView;
1847         m_childView = NULL;
1848     }
1849
1850     m_childDocument = NULL;
1851
1852     return true;
1853 }
1854
1855 // ----------------------------------------------------------------------------
1856 // Default parent frame
1857 // ----------------------------------------------------------------------------
1858
1859 BEGIN_EVENT_TABLE(wxDocParentFrame, wxFrame)
1860     EVT_MENU(wxID_EXIT, wxDocParentFrame::OnExit)
1861     EVT_MENU_RANGE(wxID_FILE1, wxID_FILE9, wxDocParentFrame::OnMRUFile)
1862     EVT_CLOSE(wxDocParentFrame::OnCloseWindow)
1863 END_EVENT_TABLE()
1864
1865 wxDocParentFrame::wxDocParentFrame()
1866 {
1867     m_docManager = NULL;
1868 }
1869
1870 wxDocParentFrame::wxDocParentFrame(wxDocManager *manager,
1871                                    wxFrame *frame,
1872                                    wxWindowID id,
1873                                    const wxString& title,
1874                                    const wxPoint& pos,
1875                                    const wxSize& size,
1876                                    long style,
1877                                    const wxString& name)
1878                 : wxFrame(frame, id, title, pos, size, style, name)
1879 {
1880     m_docManager = manager;
1881 }
1882
1883 bool wxDocParentFrame::Create(wxDocManager *manager,
1884                               wxFrame *frame,
1885                               wxWindowID id,
1886                               const wxString& title,
1887                               const wxPoint& pos,
1888                               const wxSize& size,
1889                               long style,
1890                               const wxString& name)
1891 {
1892     m_docManager = manager;
1893     return base_type::Create(frame, id, title, pos, size, style, name);
1894 }
1895
1896 void wxDocParentFrame::OnExit(wxCommandEvent& WXUNUSED(event))
1897 {
1898     Close();
1899 }
1900
1901 void wxDocParentFrame::OnMRUFile(wxCommandEvent& event)
1902 {
1903     int n = event.GetId() - wxID_FILE1;  // the index in MRU list
1904     wxString filename(m_docManager->GetHistoryFile(n));
1905     if ( filename.empty() )
1906         return;
1907
1908     wxString errMsg; // must contain exactly one "%s" if non-empty
1909     if ( wxFile::Exists(filename) )
1910     {
1911         // try to open it
1912         if ( m_docManager->CreateDocument(filename, wxDOC_SILENT) )
1913             return;
1914
1915         errMsg = _("The file '%s' couldn't be opened.");
1916     }
1917     else // file doesn't exist
1918     {
1919         errMsg = _("The file '%s' doesn't exist and couldn't be opened.");
1920     }
1921
1922
1923     wxASSERT_MSG( !errMsg.empty(), "should have an error message" );
1924
1925     // remove the file which we can't open from the MRU list
1926     m_docManager->RemoveFileFromHistory(n);
1927
1928     // and tell the user about it
1929     wxLogError(errMsg + '\n' +
1930                _("It has been removed from the most recently used files list."),
1931                filename);
1932 }
1933
1934 // Extend event processing to search the view's event table
1935 bool wxDocParentFrame::TryBefore(wxEvent& event)
1936 {
1937     if ( m_docManager && m_docManager->ProcessEventHere(event) )
1938         return true;
1939
1940     return wxFrame::TryBefore(event);
1941 }
1942
1943 // Define the behaviour for the frame closing
1944 // - must delete all frames except for the main one.
1945 void wxDocParentFrame::OnCloseWindow(wxCloseEvent& event)
1946 {
1947     if (m_docManager->Clear(!event.CanVeto()))
1948     {
1949         Destroy();
1950     }
1951     else
1952         event.Veto();
1953 }
1954
1955 #if wxUSE_PRINTING_ARCHITECTURE
1956
1957 wxDocPrintout::wxDocPrintout(wxView *view, const wxString& title)
1958              : wxPrintout(title)
1959 {
1960     m_printoutView = view;
1961 }
1962
1963 bool wxDocPrintout::OnPrintPage(int WXUNUSED(page))
1964 {
1965     wxDC *dc = GetDC();
1966
1967     // Get the logical pixels per inch of screen and printer
1968     int ppiScreenX, ppiScreenY;
1969     GetPPIScreen(&ppiScreenX, &ppiScreenY);
1970     wxUnusedVar(ppiScreenY);
1971     int ppiPrinterX, ppiPrinterY;
1972     GetPPIPrinter(&ppiPrinterX, &ppiPrinterY);
1973     wxUnusedVar(ppiPrinterY);
1974
1975     // This scales the DC so that the printout roughly represents the
1976     // the screen scaling. The text point size _should_ be the right size
1977     // but in fact is too small for some reason. This is a detail that will
1978     // need to be addressed at some point but can be fudged for the
1979     // moment.
1980     float scale = (float)((float)ppiPrinterX/(float)ppiScreenX);
1981
1982     // Now we have to check in case our real page size is reduced
1983     // (e.g. because we're drawing to a print preview memory DC)
1984     int pageWidth, pageHeight;
1985     int w, h;
1986     dc->GetSize(&w, &h);
1987     GetPageSizePixels(&pageWidth, &pageHeight);
1988     wxUnusedVar(pageHeight);
1989
1990     // If printer pageWidth == current DC width, then this doesn't
1991     // change. But w might be the preview bitmap width, so scale down.
1992     float overallScale = scale * (float)(w/(float)pageWidth);
1993     dc->SetUserScale(overallScale, overallScale);
1994
1995     if (m_printoutView)
1996     {
1997         m_printoutView->OnDraw(dc);
1998     }
1999     return true;
2000 }
2001
2002 bool wxDocPrintout::HasPage(int pageNum)
2003 {
2004     return (pageNum == 1);
2005 }
2006
2007 bool wxDocPrintout::OnBeginDocument(int startPage, int endPage)
2008 {
2009     if (!wxPrintout::OnBeginDocument(startPage, endPage))
2010         return false;
2011
2012     return true;
2013 }
2014
2015 void wxDocPrintout::GetPageInfo(int *minPage, int *maxPage,
2016                                 int *selPageFrom, int *selPageTo)
2017 {
2018     *minPage = 1;
2019     *maxPage = 1;
2020     *selPageFrom = 1;
2021     *selPageTo = 1;
2022 }
2023
2024 #endif // wxUSE_PRINTING_ARCHITECTURE
2025
2026 // ----------------------------------------------------------------------------
2027 // File history (a.k.a. MRU, most recently used, files list)
2028 // ----------------------------------------------------------------------------
2029
2030 wxFileHistory::wxFileHistory(size_t maxFiles, wxWindowID idBase)
2031 {
2032     m_fileMaxFiles = maxFiles;
2033     m_idBase = idBase;
2034 }
2035
2036 void wxFileHistory::AddFileToHistory(const wxString& file)
2037 {
2038     // check if we don't already have this file
2039     const wxFileName fnNew(file);
2040     size_t i,
2041            numFiles = m_fileHistory.size();
2042     for ( i = 0; i < numFiles; i++ )
2043     {
2044         if ( fnNew == m_fileHistory[i] )
2045         {
2046             // we do have it, move it to the top of the history
2047             RemoveFileFromHistory(i);
2048             numFiles--;
2049             break;
2050         }
2051     }
2052
2053     // if we already have a full history, delete the one at the end
2054     if ( numFiles == m_fileMaxFiles )
2055     {
2056         RemoveFileFromHistory(--numFiles);
2057     }
2058
2059     // add a new menu item to all file menus (they will be updated below)
2060     for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2061         node;
2062         node = node->GetNext() )
2063     {
2064         wxMenu * const menu = (wxMenu *)node->GetData();
2065
2066         if ( !numFiles && menu->GetMenuItemCount() )
2067             menu->AppendSeparator();
2068
2069         // label doesn't matter, it will be set below anyhow, but it can't
2070         // be empty (this is supposed to indicate a stock item)
2071         menu->Append(m_idBase + numFiles, " ");
2072     }
2073
2074     // insert the new file in the beginning of the file history
2075     m_fileHistory.insert(m_fileHistory.begin(), file);
2076     numFiles++;
2077
2078     // update the labels in all menus
2079     for ( i = 0; i < numFiles; i++ )
2080     {
2081         // if in same directory just show the filename; otherwise the full path
2082         const wxFileName fnOld(m_fileHistory[i]);
2083
2084         wxString pathInMenu;
2085         if ( fnOld.GetPath() == fnNew.GetPath() )
2086         {
2087             pathInMenu = fnOld.GetFullName();
2088         }
2089         else // file in different directory
2090         {
2091             // absolute path; could also set relative path
2092             pathInMenu = m_fileHistory[i];
2093         }
2094
2095         for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2096               node;
2097               node = node->GetNext() )
2098         {
2099             wxMenu * const menu = (wxMenu *)node->GetData();
2100
2101             menu->SetLabel(m_idBase + i, GetMRUEntryLabel(i, pathInMenu));
2102         }
2103     }
2104 }
2105
2106 void wxFileHistory::RemoveFileFromHistory(size_t i)
2107 {
2108     size_t numFiles = m_fileHistory.size();
2109     wxCHECK_RET( i < numFiles,
2110                  wxT("invalid index in wxFileHistory::RemoveFileFromHistory") );
2111
2112     // delete the element from the array
2113     m_fileHistory.RemoveAt(i);
2114     numFiles--;
2115
2116     for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2117           node;
2118           node = node->GetNext() )
2119     {
2120         wxMenu * const menu = (wxMenu *) node->GetData();
2121
2122         // shift filenames up
2123         for ( size_t j = i; j < numFiles; j++ )
2124         {
2125             menu->SetLabel(m_idBase + j, GetMRUEntryLabel(j, m_fileHistory[j]));
2126         }
2127
2128         // delete the last menu item which is unused now
2129         const wxWindowID lastItemId = m_idBase + numFiles;
2130         if ( menu->FindItem(lastItemId) )
2131             menu->Delete(lastItemId);
2132
2133         // delete the last separator too if no more files are left
2134         if ( m_fileHistory.empty() )
2135         {
2136             const wxMenuItemList::compatibility_iterator
2137                 nodeLast = menu->GetMenuItems().GetLast();
2138             if ( nodeLast )
2139             {
2140                 wxMenuItem * const lastMenuItem = nodeLast->GetData();
2141                 if ( lastMenuItem->IsSeparator() )
2142                     menu->Delete(lastMenuItem);
2143             }
2144             //else: menu is empty somehow
2145         }
2146     }
2147 }
2148
2149 void wxFileHistory::UseMenu(wxMenu *menu)
2150 {
2151     if ( !m_fileMenus.Member(menu) )
2152         m_fileMenus.Append(menu);
2153 }
2154
2155 void wxFileHistory::RemoveMenu(wxMenu *menu)
2156 {
2157     m_fileMenus.DeleteObject(menu);
2158 }
2159
2160 #if wxUSE_CONFIG
2161 void wxFileHistory::Load(const wxConfigBase& config)
2162 {
2163     m_fileHistory.Clear();
2164
2165     wxString buf;
2166     buf.Printf(wxT("file%d"), 1);
2167
2168     wxString historyFile;
2169     while ((m_fileHistory.GetCount() < m_fileMaxFiles) &&
2170            config.Read(buf, &historyFile) && !historyFile.empty())
2171     {
2172         m_fileHistory.Add(historyFile);
2173
2174         buf.Printf(wxT("file%d"), (int)m_fileHistory.GetCount()+1);
2175         historyFile = wxEmptyString;
2176     }
2177
2178     AddFilesToMenu();
2179 }
2180
2181 void wxFileHistory::Save(wxConfigBase& config)
2182 {
2183     size_t i;
2184     for (i = 0; i < m_fileMaxFiles; i++)
2185     {
2186         wxString buf;
2187         buf.Printf(wxT("file%d"), (int)i+1);
2188         if (i < m_fileHistory.GetCount())
2189             config.Write(buf, wxString(m_fileHistory[i]));
2190         else
2191             config.Write(buf, wxEmptyString);
2192     }
2193 }
2194 #endif // wxUSE_CONFIG
2195
2196 void wxFileHistory::AddFilesToMenu()
2197 {
2198     if ( m_fileHistory.empty() )
2199         return;
2200
2201     for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2202           node;
2203           node = node->GetNext() )
2204     {
2205         AddFilesToMenu((wxMenu *) node->GetData());
2206     }
2207 }
2208
2209 void wxFileHistory::AddFilesToMenu(wxMenu* menu)
2210 {
2211     if ( m_fileHistory.empty() )
2212         return;
2213
2214     if ( menu->GetMenuItemCount() )
2215         menu->AppendSeparator();
2216
2217     for ( size_t i = 0; i < m_fileHistory.GetCount(); i++ )
2218     {
2219         menu->Append(m_idBase + i, GetMRUEntryLabel(i, m_fileHistory[i]));
2220     }
2221 }
2222
2223 // ----------------------------------------------------------------------------
2224 // Permits compatibility with existing file formats and functions that
2225 // manipulate files directly
2226 // ----------------------------------------------------------------------------
2227
2228 #if wxUSE_STD_IOSTREAM
2229
2230 bool wxTransferFileToStream(const wxString& filename, wxSTD ostream& stream)
2231 {
2232     wxFFile file(filename, _T("rb"));
2233     if ( !file.IsOpened() )
2234         return false;
2235
2236     char buf[4096];
2237
2238     size_t nRead;
2239     do
2240     {
2241         nRead = file.Read(buf, WXSIZEOF(buf));
2242         if ( file.Error() )
2243             return false;
2244
2245         stream.write(buf, nRead);
2246         if ( !stream )
2247             return false;
2248     }
2249     while ( !file.Eof() );
2250
2251     return true;
2252 }
2253
2254 bool wxTransferStreamToFile(wxSTD istream& stream, const wxString& filename)
2255 {
2256     wxFFile file(filename, _T("wb"));
2257     if ( !file.IsOpened() )
2258         return false;
2259
2260     char buf[4096];
2261     do
2262     {
2263         stream.read(buf, WXSIZEOF(buf));
2264         if ( !stream.bad() ) // fail may be set on EOF, don't use operator!()
2265         {
2266             if ( !file.Write(buf, stream.gcount()) )
2267                 return false;
2268         }
2269     }
2270     while ( !stream.eof() );
2271
2272     return true;
2273 }
2274
2275 #else // !wxUSE_STD_IOSTREAM
2276
2277 bool wxTransferFileToStream(const wxString& filename, wxOutputStream& stream)
2278 {
2279     wxFFile file(filename, _T("rb"));
2280     if ( !file.IsOpened() )
2281         return false;
2282
2283     char buf[4096];
2284
2285     size_t nRead;
2286     do
2287     {
2288         nRead = file.Read(buf, WXSIZEOF(buf));
2289         if ( file.Error() )
2290             return false;
2291
2292         stream.Write(buf, nRead);
2293         if ( !stream )
2294             return false;
2295     }
2296     while ( !file.Eof() );
2297
2298     return true;
2299 }
2300
2301 bool wxTransferStreamToFile(wxInputStream& stream, const wxString& filename)
2302 {
2303     wxFFile file(filename, _T("wb"));
2304     if ( !file.IsOpened() )
2305         return false;
2306
2307     char buf[4096];
2308     for ( ;; )
2309     {
2310         stream.Read(buf, WXSIZEOF(buf));
2311
2312         const size_t nRead = stream.LastRead();
2313         if ( !nRead )
2314         {
2315             if ( stream.Eof() )
2316                 break;
2317
2318             return false;
2319         }
2320
2321         if ( !file.Write(buf, nRead) )
2322             return false;
2323     }
2324
2325     return true;
2326 }
2327
2328 #endif // wxUSE_STD_IOSTREAM/!wxUSE_STD_IOSTREAM
2329
2330 #endif // wxUSE_DOC_VIEW_ARCHITECTURE