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 wxString FindExtension(const wxString& path)
 109 {
 110     wxString ext;
 111     wxFileName::SplitPath(path, NULL, NULL, &ext);
 112
 113     // VZ: extensions are considered not case sensitive - is this really a good
 114     //     idea?
 115     return ext.MakeLower();
 116 }
 117
 118 // return the string used for the MRU list items in the menu
 119 //
 120 // NB: the index n is 0-based, as usual, but the strings start from 1
 121 wxString GetMRUEntryLabel(int n, const wxString& path)
 122 {
 123     // we need to quote '&' characters which are used for mnemonics
 124     wxString pathInMenu(path);
 125     pathInMenu.Replace("&", "&&");
 126
 127     return wxString::Format("&%d %s", n + 1, pathInMenu);
 128 }
 129
 130 } // anonymous namespace
 131
 132 // ----------------------------------------------------------------------------
 133 // Definition of wxDocument
 134 // ----------------------------------------------------------------------------
 135
 136 wxDocument::wxDocument(wxDocument *parent)
 137 {
 138     m_documentModified = false;
 139     m_documentParent = parent;
 140     m_documentTemplate = NULL;
 141     m_commandProcessor = NULL;
 142     m_savedYet = false;
 143 }
 144
 145 bool wxDocument::DeleteContents()
 146 {
 147     return true;
 148 }
 149
 150 wxDocument::~wxDocument()
 151 {
 152     DeleteContents();
 153
 154     delete m_commandProcessor;
 155
 156     if (GetDocumentManager())
 157         GetDocumentManager()->RemoveDocument(this);
 158
 159     // Not safe to do here, since it'll invoke virtual view functions
 160     // expecting to see valid derived objects: and by the time we get here,
 161     // we've called destructors higher up.
 162     //DeleteAllViews();
 163 }
 164
 165 bool wxDocument::Close()
 166 {
 167     if ( !OnSaveModified() )
 168         return false;
 169
 170     return OnCloseDocument();
 171 }
 172
 173 bool wxDocument::OnCloseDocument()
 174 {
 175     // Tell all views that we're about to close
 176     NotifyClosing();
 177     DeleteContents();
 178     Modify(false);
 179     return true;
 180 }
 181
 182 // Note that this implicitly deletes the document when the last view is
 183 // deleted.
 184 bool wxDocument::DeleteAllViews()
 185 {
 186     wxDocManager* manager = GetDocumentManager();
 187
 188     // first check if all views agree to be closed
 189     const wxList::iterator end = m_documentViews.end();
 190     for ( wxList::iterator i = m_documentViews.begin(); i != end; ++i )
 191     {
 192         wxView *view = (wxView *)*i;
 193         if ( !view->Close() )
 194             return false;
 195     }
 196
 197     // all views agreed to close, now do close them
 198     if ( m_documentViews.empty() )
 199     {
 200         // normally the document would be implicitly deleted when the last view
 201         // is, but if don't have any views, do it here instead
 202         if ( manager && manager->GetDocuments().Member(this) )
 203             delete this;
 204     }
 205     else // have views
 206     {
 207         // as we delete elements we iterate over, don't use the usual "from
 208         // begin to end" loop
 209         for ( ;; )
 210         {
 211             wxView *view = (wxView *)*m_documentViews.begin();
 212
 213             bool isLastOne = m_documentViews.size() == 1;
 214
 215             // this always deletes the node implicitly and if this is the last
 216             // view also deletes this object itself (also implicitly, great),
 217             // so we can't test for m_documentViews.empty() after calling this!
 218             delete view;
 219
 220             if ( isLastOne )
 221                 break;
 222         }
 223     }
 224
 225     return true;
 226 }
 227
 228 wxView *wxDocument::GetFirstView() const
 229 {
 230     if ( m_documentViews.empty() )
 231         return NULL;
 232
 233     return static_cast<wxView *>(m_documentViews.GetFirst()->GetData());
 234 }
 235
 236 wxDocManager *wxDocument::GetDocumentManager() const
 237 {
 238     return m_documentTemplate ? m_documentTemplate->GetDocumentManager() : NULL;
 239 }
 240
 241 bool wxDocument::OnNewDocument()
 242 {
 243     // notice that there is no need to neither reset nor even check the
 244     // modified flag here as the document itself is a new object (this is only
 245     // called from CreateDocument()) and so it shouldn't be saved anyhow even
 246     // if it is modified -- this could happen if the user code creates
 247     // documents pre-filled with some user-entered (and which hence must not be
 248     // lost) information
 249
 250     SetDocumentSaved(false);
 251
 252     const wxString name = GetDocumentManager()->MakeNewDocumentName();
 253     SetTitle(name);
 254     SetFilename(name, true);
 255
 256     return true;
 257 }
 258
 259 bool wxDocument::Save()
 260 {
 261     if ( AlreadySaved() )
 262         return true;
 263
 264     if ( m_documentFile.empty() || !m_savedYet )
 265         return SaveAs();
 266
 267     return OnSaveDocument(m_documentFile);
 268 }
 269
 270 bool wxDocument::SaveAs()
 271 {
 272     wxDocTemplate *docTemplate = GetDocumentTemplate();
 273     if (!docTemplate)
 274         return false;
 275
 276 #ifdef wxHAS_MULTIPLE_FILEDLG_FILTERS
 277     wxString filter = docTemplate->GetDescription() + wxT(" (") +
 278         docTemplate->GetFileFilter() + wxT(")|") +
 279         docTemplate->GetFileFilter();
 280
 281     // Now see if there are some other template with identical view and document
 282     // classes, whose filters may also be used.
 283     if (docTemplate->GetViewClassInfo() && docTemplate->GetDocClassInfo())
 284     {
 285         wxList::compatibility_iterator
 286             node = docTemplate->GetDocumentManager()->GetTemplates().GetFirst();
 287         while (node)
 288         {
 289             wxDocTemplate *t = (wxDocTemplate*) node->GetData();
 290
 291             if (t->IsVisible() && t != docTemplate &&
 292                 t->GetViewClassInfo() == docTemplate->GetViewClassInfo() &&
 293                 t->GetDocClassInfo() == docTemplate->GetDocClassInfo())
 294             {
 295                 // add a '|' to separate this filter from the previous one
 296                 if ( !filter.empty() )
 297                     filter << wxT('|');
 298
 299                 filter << t->GetDescription()
 300                        << wxT(" (") << t->GetFileFilter() << wxT(") |")
 301                        << t->GetFileFilter();
 302             }
 303
 304             node = node->GetNext();
 305         }
 306     }
 307 #else
 308     wxString filter = docTemplate->GetFileFilter() ;
 309 #endif
 310
 311     wxString defaultDir = docTemplate->GetDirectory();
 312     if ( defaultDir.empty() )
 313     {
 314         defaultDir = wxPathOnly(GetFilename());
 315         if ( defaultDir.empty() )
 316             defaultDir = GetDocumentManager()->GetLastDirectory();
 317     }
 318
 319     wxString fileName = wxFileSelector(_("Save As"),
 320             defaultDir,
 321             wxFileNameFromPath(GetFilename()),
 322             docTemplate->GetDefaultExtension(),
 323             filter,
 324             wxFD_SAVE | wxFD_OVERWRITE_PROMPT,
 325             GetDocumentWindow());
 326
 327     if (fileName.empty())
 328         return false; // cancelled by user
 329
 330     wxString ext;
 331     wxFileName::SplitPath(fileName, NULL, NULL, &ext);
 332
 333     if (ext.empty())
 334     {
 335         fileName += wxT(".");
 336         fileName += docTemplate->GetDefaultExtension();
 337     }
 338
 339     // Files that were not saved correctly are not added to the FileHistory.
 340     if (!OnSaveDocument(fileName))
 341         return false;
 342
 343     SetTitle(wxFileNameFromPath(fileName));
 344     SetFilename(fileName, true);    // will call OnChangeFileName automatically
 345
 346    // A file that doesn't use the default extension of its document template
 347    // cannot be opened via the FileHistory, so we do not add it.
 348    if (docTemplate->FileMatchesTemplate(fileName))
 349    {
 350        GetDocumentManager()->AddFileToHistory(fileName);
 351    }
 352    //else: the user will probably not be able to open the file again, so we
 353    //      could warn about the wrong file-extension here
 354
 355    return true;
 356 }
 357
 358 bool wxDocument::OnSaveDocument(const wxString& file)
 359 {
 360     if ( !file )
 361         return false;
 362
 363     if ( !DoSaveDocument(file) )
 364         return false;
 365
 366     Modify(false);
 367     SetFilename(file);
 368     SetDocumentSaved(true);
 369 #if defined( __WXOSX_MAC__ ) && wxOSX_USE_CARBON
 370     wxFileName fn(file) ;
 371     fn.MacSetDefaultTypeAndCreator() ;
 372 #endif
 373     return true;
 374 }
 375
 376 bool wxDocument::OnOpenDocument(const wxString& file)
 377 {
 378     // notice that there is no need to check the modified flag here for the
 379     // reasons explained in OnNewDocument()
 380
 381     if ( !DoOpenDocument(file) )
 382         return false;
 383
 384     SetFilename(file, true);
 385
 386     // stretching the logic a little this does make sense because the document
 387     // had been saved into the file we just loaded it from, it just could have
 388     // happened during a previous program execution, it's just that the name of
 389     // this method is a bit unfortunate, it should probably have been called
 390     // HasAssociatedFileName()
 391     SetDocumentSaved(true);
 392
 393     UpdateAllViews();
 394
 395     return true;
 396 }
 397
 398 #if wxUSE_STD_IOSTREAM
 399 wxSTD istream& wxDocument::LoadObject(wxSTD istream& stream)
 400 #else
 401 wxInputStream& wxDocument::LoadObject(wxInputStream& stream)
 402 #endif
 403 {
 404     return stream;
 405 }
 406
 407 #if wxUSE_STD_IOSTREAM
 408 wxSTD ostream& wxDocument::SaveObject(wxSTD ostream& stream)
 409 #else
 410 wxOutputStream& wxDocument::SaveObject(wxOutputStream& stream)
 411 #endif
 412 {
 413     return stream;
 414 }
 415
 416 bool wxDocument::Revert()
 417 {
 418     return false;
 419 }
 420
 421
 422 // Get title, or filename if no title, else unnamed
 423 #if WXWIN_COMPATIBILITY_2_8
 424 bool wxDocument::GetPrintableName(wxString& buf) const
 425 {
 426     // this function can not only be overridden by the user code but also
 427     // called by it so we need to ensure that we return the same thing as
 428     // GetUserReadableName() but we can't call it because this would result in
 429     // an infinite recursion, hence we use the helper DoGetUserReadableName()
 430     buf = DoGetUserReadableName();
 431
 432     return true;
 433 }
 434 #endif // WXWIN_COMPATIBILITY_2_8
 435
 436 wxString wxDocument::GetUserReadableName() const
 437 {
 438 #if WXWIN_COMPATIBILITY_2_8
 439     // we need to call the old virtual function to ensure that the overridden
 440     // version of it is still called
 441     wxString name;
 442     if ( GetPrintableName(name) )
 443         return name;
 444 #endif // WXWIN_COMPATIBILITY_2_8
 445
 446     return DoGetUserReadableName();
 447 }
 448
 449 wxString wxDocument::DoGetUserReadableName() const
 450 {
 451     if ( !m_documentTitle.empty() )
 452         return m_documentTitle;
 453
 454     if ( !m_documentFile.empty() )
 455         return wxFileNameFromPath(m_documentFile);
 456
 457     return _("unnamed");
 458 }
 459
 460 wxWindow *wxDocument::GetDocumentWindow() const
 461 {
 462     wxView * const view = GetFirstView();
 463
 464     return view ? view->GetFrame() : wxTheApp->GetTopWindow();
 465 }
 466
 467 wxCommandProcessor *wxDocument::OnCreateCommandProcessor()
 468 {
 469     return new wxCommandProcessor;
 470 }
 471
 472 // true if safe to close
 473 bool wxDocument::OnSaveModified()
 474 {
 475     if ( IsModified() )
 476     {
 477         switch ( wxMessageBox
 478                  (
 479                     wxString::Format
 480                     (
 481                      _("Do you want to save changes to %s?"),
 482                      GetUserReadableName()
 483                     ),
 484                     wxTheApp->GetAppDisplayName(),
 485                     wxYES_NO | wxCANCEL | wxICON_QUESTION | wxCENTRE
 486                  ) )
 487         {
 488             case wxNO:
 489                 Modify(false);
 490                 break;
 491
 492             case wxYES:
 493                 return Save();
 494
 495             case wxCANCEL:
 496                 return false;
 497         }
 498     }
 499
 500     return true;
 501 }
 502
 503 bool wxDocument::Draw(wxDC& WXUNUSED(context))
 504 {
 505     return true;
 506 }
 507
 508 bool wxDocument::AddView(wxView *view)
 509 {
 510     if ( !m_documentViews.Member(view) )
 511     {
 512         m_documentViews.Append(view);
 513         OnChangedViewList();
 514     }
 515     return true;
 516 }
 517
 518 bool wxDocument::RemoveView(wxView *view)
 519 {
 520     (void)m_documentViews.DeleteObject(view);
 521     OnChangedViewList();
 522     return true;
 523 }
 524
 525 bool wxDocument::OnCreate(const wxString& WXUNUSED(path), long flags)
 526 {
 527     return GetDocumentTemplate()->CreateView(this, flags) != NULL;
 528 }
 529
 530 // Called after a view is added or removed.
 531 // The default implementation deletes the document if
 532 // there are no more views.
 533 void wxDocument::OnChangedViewList()
 534 {
 535     if ( m_documentViews.empty() && OnSaveModified() )
 536         delete this;
 537 }
 538
 539 void wxDocument::UpdateAllViews(wxView *sender, wxObject *hint)
 540 {
 541     wxList::compatibility_iterator node = m_documentViews.GetFirst();
 542     while (node)
 543     {
 544         wxView *view = (wxView *)node->GetData();
 545         if (view != sender)
 546             view->OnUpdate(sender, hint);
 547         node = node->GetNext();
 548     }
 549 }
 550
 551 void wxDocument::NotifyClosing()
 552 {
 553     wxList::compatibility_iterator node = m_documentViews.GetFirst();
 554     while (node)
 555     {
 556         wxView *view = (wxView *)node->GetData();
 557         view->OnClosingDocument();
 558         node = node->GetNext();
 559     }
 560 }
 561
 562 void wxDocument::SetFilename(const wxString& filename, bool notifyViews)
 563 {
 564     m_documentFile = filename;
 565     OnChangeFilename(notifyViews);
 566 }
 567
 568 void wxDocument::OnChangeFilename(bool notifyViews)
 569 {
 570     if ( notifyViews )
 571     {
 572         // Notify the views that the filename has changed
 573         wxList::compatibility_iterator node = m_documentViews.GetFirst();
 574         while (node)
 575         {
 576             wxView *view = (wxView *)node->GetData();
 577             view->OnChangeFilename();
 578             node = node->GetNext();
 579         }
 580     }
 581 }
 582
 583 bool wxDocument::DoSaveDocument(const wxString& file)
 584 {
 585 #if wxUSE_STD_IOSTREAM
 586     wxSTD ofstream store(file.mb_str(), wxSTD ios::binary);
 587     if ( !store )
 588 #else
 589     wxFileOutputStream store(file);
 590     if ( store.GetLastError() != wxSTREAM_NO_ERROR )
 591 #endif
 592     {
 593         wxLogError(_("File \"%s\" could not be opened for writing."), file);
 594         return false;
 595     }
 596
 597     if (!SaveObject(store))
 598     {
 599         wxLogError(_("Failed to save document to the file \"%s\"."), file);
 600         return false;
 601     }
 602
 603     return true;
 604 }
 605
 606 bool wxDocument::DoOpenDocument(const wxString& file)
 607 {
 608 #if wxUSE_STD_IOSTREAM
 609     wxSTD ifstream store(file.mb_str(), wxSTD ios::binary);
 610     if ( !store )
 611 #else
 612     wxFileInputStream store(file);
 613     if (store.GetLastError() != wxSTREAM_NO_ERROR || !store.IsOk())
 614 #endif
 615     {
 616         wxLogError(_("File \"%s\" could not be opened for reading."), file);
 617         return false;
 618     }
 619
 620 #if wxUSE_STD_IOSTREAM
 621     LoadObject(store);
 622     if ( !store )
 623 #else
 624     int res = LoadObject(store).GetLastError();
 625     if ( res != wxSTREAM_NO_ERROR && res != wxSTREAM_EOF )
 626 #endif
 627     {
 628         wxLogError(_("Failed to read document from the file \"%s\"."), file);
 629         return false;
 630     }
 631
 632     return true;
 633 }
 634
 635
 636 // ----------------------------------------------------------------------------
 637 // Document view
 638 // ----------------------------------------------------------------------------
 639
 640 wxView::wxView()
 641 {
 642     m_viewDocument = NULL;
 643
 644     m_viewFrame = NULL;
 645
 646     m_docChildFrame = NULL;
 647 }
 648
 649 wxView::~wxView()
 650 {
 651     GetDocumentManager()->ActivateView(this, false);
 652
 653     // reset our frame view first, before removing it from the document as
 654     // SetView(NULL) is a simple call while RemoveView() may result in user
 655     // code being executed and this user code can, for example, show a message
 656     // box which would result in an activation event for m_docChildFrame and so
 657     // could reactivate the view being destroyed -- unless we reset it first
 658     if ( m_docChildFrame && m_docChildFrame->GetView() == this )
 659     {
 660         // prevent it from doing anything with us
 661         m_docChildFrame->SetView(NULL);
 662
 663         // it doesn't make sense to leave the frame alive if its associated
 664         // view doesn't exist any more so unconditionally close it as well
 665         //
 666         // notice that we only get here if m_docChildFrame is non-NULL in the
 667         // first place and it will be always NULL if we're deleted because our
 668         // frame was closed, so this only catches the case of directly deleting
 669         // the view, as it happens if its creation fails in wxDocTemplate::
 670         // CreateView() for example
 671         m_docChildFrame->GetWindow()->Destroy();
 672     }
 673
 674     if ( m_viewDocument )
 675         m_viewDocument->RemoveView(this);
 676 }
 677
 678 void wxView::SetDocChildFrame(wxDocChildFrameAnyBase *docChildFrame)
 679 {
 680     SetFrame(docChildFrame ? docChildFrame->GetWindow() : NULL);
 681     m_docChildFrame = docChildFrame;
 682 }
 683
 684 bool wxView::TryBefore(wxEvent& event)
 685 {
 686     wxDocument * const doc = GetDocument();
 687     return doc && doc->ProcessEventHere(event);
 688 }
 689
 690 void wxView::OnActivateView(bool WXUNUSED(activate),
 691                             wxView *WXUNUSED(activeView),
 692                             wxView *WXUNUSED(deactiveView))
 693 {
 694 }
 695
 696 void wxView::OnPrint(wxDC *dc, wxObject *WXUNUSED(info))
 697 {
 698     OnDraw(dc);
 699 }
 700
 701 void wxView::OnUpdate(wxView *WXUNUSED(sender), wxObject *WXUNUSED(hint))
 702 {
 703 }
 704
 705 void wxView::OnChangeFilename()
 706 {
 707     // GetFrame can return wxWindow rather than wxTopLevelWindow due to
 708     // generic MDI implementation so use SetLabel rather than SetTitle.
 709     // It should cause SetTitle() for top level windows.
 710     wxWindow *win = GetFrame();
 711     if (!win) return;
 712
 713     wxDocument *doc = GetDocument();
 714     if (!doc) return;
 715
 716     win->SetLabel(doc->GetUserReadableName());
 717 }
 718
 719 void wxView::SetDocument(wxDocument *doc)
 720 {
 721     m_viewDocument = doc;
 722     if (doc)
 723         doc->AddView(this);
 724 }
 725
 726 bool wxView::Close(bool deleteWindow)
 727 {
 728     return OnClose(deleteWindow);
 729 }
 730
 731 void wxView::Activate(bool activate)
 732 {
 733     if (GetDocument() && GetDocumentManager())
 734     {
 735         OnActivateView(activate, this, GetDocumentManager()->GetCurrentView());
 736         GetDocumentManager()->ActivateView(this, activate);
 737     }
 738 }
 739
 740 bool wxView::OnClose(bool WXUNUSED(deleteWindow))
 741 {
 742     return GetDocument() ? GetDocument()->Close() : true;
 743 }
 744
 745 #if wxUSE_PRINTING_ARCHITECTURE
 746 wxPrintout *wxView::OnCreatePrintout()
 747 {
 748     return new wxDocPrintout(this);
 749 }
 750 #endif // wxUSE_PRINTING_ARCHITECTURE
 751
 752 // ----------------------------------------------------------------------------
 753 // wxDocTemplate
 754 // ----------------------------------------------------------------------------
 755
 756 wxDocTemplate::wxDocTemplate(wxDocManager *manager,
 757                              const wxString& descr,
 758                              const wxString& filter,
 759                              const wxString& dir,
 760                              const wxString& ext,
 761                              const wxString& docTypeName,
 762                              const wxString& viewTypeName,
 763                              wxClassInfo *docClassInfo,
 764                              wxClassInfo *viewClassInfo,
 765                              long flags)
 766 {
 767     m_documentManager = manager;
 768     m_description = descr;
 769     m_directory = dir;
 770     m_defaultExt = ext;
 771     m_fileFilter = filter;
 772     m_flags = flags;
 773     m_docTypeName = docTypeName;
 774     m_viewTypeName = viewTypeName;
 775     m_documentManager->AssociateTemplate(this);
 776
 777     m_docClassInfo = docClassInfo;
 778     m_viewClassInfo = viewClassInfo;
 779 }
 780
 781 wxDocTemplate::~wxDocTemplate()
 782 {
 783     m_documentManager->DisassociateTemplate(this);
 784 }
 785
 786 // Tries to dynamically construct an object of the right class.
 787 wxDocument *wxDocTemplate::CreateDocument(const wxString& path, long flags)
 788 {
 789     // InitDocument() is supposed to delete the document object if its
 790     // initialization fails so don't use wxScopedPtr<> here: this is fragile
 791     // but unavoidable because the default implementation uses CreateView()
 792     // which may -- or not -- create a wxView and if it does create it and its
 793     // initialization fails then the view destructor will delete the document
 794     // (via RemoveView()) and as we can't distinguish between the two cases we
 795     // just have to assume that it always deletes it in case of failure
 796     wxDocument * const doc = DoCreateDocument();
 797
 798     return doc && InitDocument(doc, path, flags) ? doc : NULL;
 799 }
 800
 801 bool
 802 wxDocTemplate::InitDocument(wxDocument* doc, const wxString& path, long flags)
 803 {
 804     doc->SetFilename(path);
 805     doc->SetDocumentTemplate(this);
 806     GetDocumentManager()->AddDocument(doc);
 807     doc->SetCommandProcessor(doc->OnCreateCommandProcessor());
 808
 809     if (doc->OnCreate(path, flags))
 810         return true;
 811
 812     if (GetDocumentManager()->GetDocuments().Member(doc))
 813         doc->DeleteAllViews();
 814     return false;
 815 }
 816
 817 wxView *wxDocTemplate::CreateView(wxDocument *doc, long flags)
 818 {
 819     wxScopedPtr<wxView> view(DoCreateView());
 820     if ( !view )
 821         return NULL;
 822
 823     view->SetDocument(doc);
 824     if ( !view->OnCreate(doc, flags) )
 825         return NULL;
 826
 827     return view.release();
 828 }
 829
 830 // The default (very primitive) format detection: check is the extension is
 831 // that of the template
 832 bool wxDocTemplate::FileMatchesTemplate(const wxString& path)
 833 {
 834     wxStringTokenizer parser (GetFileFilter(), wxT(";"));
 835     wxString anything = wxT ("*");
 836     while (parser.HasMoreTokens())
 837     {
 838         wxString filter = parser.GetNextToken();
 839         wxString filterExt = FindExtension (filter);
 840         if ( filter.IsSameAs (anything)    ||
 841              filterExt.IsSameAs (anything) ||
 842              filterExt.IsSameAs (FindExtension (path)) )
 843             return true;
 844     }
 845     return GetDefaultExtension().IsSameAs(FindExtension(path));
 846 }
 847
 848 wxDocument *wxDocTemplate::DoCreateDocument()
 849 {
 850     if (!m_docClassInfo)
 851         return NULL;
 852
 853     return static_cast<wxDocument *>(m_docClassInfo->CreateObject());
 854 }
 855
 856 wxView *wxDocTemplate::DoCreateView()
 857 {
 858     if (!m_viewClassInfo)
 859         return NULL;
 860
 861     return static_cast<wxView *>(m_viewClassInfo->CreateObject());
 862 }
 863
 864 // ----------------------------------------------------------------------------
 865 // wxDocManager
 866 // ----------------------------------------------------------------------------
 867
 868 BEGIN_EVENT_TABLE(wxDocManager, wxEvtHandler)
 869     EVT_MENU(wxID_OPEN, wxDocManager::OnFileOpen)
 870     EVT_MENU(wxID_CLOSE, wxDocManager::OnFileClose)
 871     EVT_MENU(wxID_CLOSE_ALL, wxDocManager::OnFileCloseAll)
 872     EVT_MENU(wxID_REVERT, wxDocManager::OnFileRevert)
 873     EVT_MENU(wxID_NEW, wxDocManager::OnFileNew)
 874     EVT_MENU(wxID_SAVE, wxDocManager::OnFileSave)
 875     EVT_MENU(wxID_SAVEAS, wxDocManager::OnFileSaveAs)
 876     EVT_MENU(wxID_UNDO, wxDocManager::OnUndo)
 877     EVT_MENU(wxID_REDO, wxDocManager::OnRedo)
 878
 879     EVT_UPDATE_UI(wxID_OPEN, wxDocManager::OnUpdateFileOpen)
 880     EVT_UPDATE_UI(wxID_CLOSE, wxDocManager::OnUpdateDisableIfNoDoc)
 881     EVT_UPDATE_UI(wxID_CLOSE_ALL, wxDocManager::OnUpdateDisableIfNoDoc)
 882     EVT_UPDATE_UI(wxID_REVERT, wxDocManager::OnUpdateDisableIfNoDoc)
 883     EVT_UPDATE_UI(wxID_NEW, wxDocManager::OnUpdateFileNew)
 884     EVT_UPDATE_UI(wxID_SAVE, wxDocManager::OnUpdateFileSave)
 885     EVT_UPDATE_UI(wxID_SAVEAS, wxDocManager::OnUpdateDisableIfNoDoc)
 886     EVT_UPDATE_UI(wxID_UNDO, wxDocManager::OnUpdateUndo)
 887     EVT_UPDATE_UI(wxID_REDO, wxDocManager::OnUpdateRedo)
 888
 889 #if wxUSE_PRINTING_ARCHITECTURE
 890     EVT_MENU(wxID_PRINT, wxDocManager::OnPrint)
 891     EVT_MENU(wxID_PREVIEW, wxDocManager::OnPreview)
 892
 893     EVT_UPDATE_UI(wxID_PRINT, wxDocManager::OnUpdateDisableIfNoDoc)
 894     EVT_UPDATE_UI(wxID_PREVIEW, wxDocManager::OnUpdateDisableIfNoDoc)
 895 #endif
 896 END_EVENT_TABLE()
 897
 898 wxDocManager* wxDocManager::sm_docManager = NULL;
 899
 900 wxDocManager::wxDocManager(long WXUNUSED(flags), bool initialize)
 901 {
 902     wxASSERT_MSG( !sm_docManager, "multiple wxDocManagers not allowed" );
 903
 904     sm_docManager = this;
 905
 906     m_defaultDocumentNameCounter = 1;
 907     m_currentView = NULL;
 908     m_maxDocsOpen = INT_MAX;
 909     m_fileHistory = NULL;
 910     if ( initialize )
 911         Initialize();
 912 }
 913
 914 wxDocManager::~wxDocManager()
 915 {
 916     Clear();
 917     delete m_fileHistory;
 918     sm_docManager = NULL;
 919 }
 920
 921 // closes the specified document
 922 bool wxDocManager::CloseDocument(wxDocument* doc, bool force)
 923 {
 924     if ( !doc->Close() && !force )
 925         return false;
 926
 927     // Implicitly deletes the document when
 928     // the last view is deleted
 929     doc->DeleteAllViews();
 930
 931     // Check we're really deleted
 932     if (m_docs.Member(doc))
 933         delete doc;
 934
 935     return true;
 936 }
 937
 938 bool wxDocManager::CloseDocuments(bool force)
 939 {
 940     wxList::compatibility_iterator node = m_docs.GetFirst();
 941     while (node)
 942     {
 943         wxDocument *doc = (wxDocument *)node->GetData();
 944         wxList::compatibility_iterator next = node->GetNext();
 945
 946         if (!CloseDocument(doc, force))
 947             return false;
 948
 949         // This assumes that documents are not connected in
 950         // any way, i.e. deleting one document does NOT
 951         // delete another.
 952         node = next;
 953     }
 954     return true;
 955 }
 956
 957 bool wxDocManager::Clear(bool force)
 958 {
 959     if (!CloseDocuments(force))
 960         return false;
 961
 962     m_currentView = NULL;
 963
 964     wxList::compatibility_iterator node = m_templates.GetFirst();
 965     while (node)
 966     {
 967         wxDocTemplate *templ = (wxDocTemplate*) node->GetData();
 968         wxList::compatibility_iterator next = node->GetNext();
 969         delete templ;
 970         node = next;
 971     }
 972     return true;
 973 }
 974
 975 bool wxDocManager::Initialize()
 976 {
 977     m_fileHistory = OnCreateFileHistory();
 978     return true;
 979 }
 980
 981 wxString wxDocManager::GetLastDirectory() const
 982 {
 983     // if we haven't determined the last used directory yet, do it now
 984     if ( m_lastDirectory.empty() )
 985     {
 986         // we're going to modify m_lastDirectory in this const method, so do it
 987         // via non-const self pointer instead of const this one
 988         wxDocManager * const self = const_cast<wxDocManager *>(this);
 989
 990         // first try to reuse the directory of the most recently opened file:
 991         // this ensures that if the user opens a file, closes the program and
 992         // runs it again the "Open file" dialog will open in the directory of
 993         // the last file he used
 994         wxString lastOpened = GetHistoryFile(0);
 995         if ( !lastOpened.empty() )
 996         {
 997             const wxFileName fn(lastOpened);
 998             if ( fn.DirExists() )
 999             {
1000                 self->m_lastDirectory = fn.GetPath();
1001             }
1002             //else: should we try the next one?
1003         }
1004
1005         // if we don't have any files in the history (yet?), use the
1006         // system-dependent default location for the document files
1007         if ( m_lastDirectory.empty() )
1008         {
1009             self->m_lastDirectory = wxStandardPaths::Get().GetAppDocumentsDir();
1010         }
1011     }
1012
1013     return m_lastDirectory;
1014 }
1015
1016 wxFileHistory *wxDocManager::OnCreateFileHistory()
1017 {
1018     return new wxFileHistory;
1019 }
1020
1021 void wxDocManager::OnFileClose(wxCommandEvent& WXUNUSED(event))
1022 {
1023     wxDocument *doc = GetCurrentDocument();
1024     if (!doc)
1025         return;
1026     if (doc->Close())
1027     {
1028         doc->DeleteAllViews();
1029         if (m_docs.Member(doc))
1030             delete doc;
1031     }
1032 }
1033
1034 void wxDocManager::OnFileCloseAll(wxCommandEvent& WXUNUSED(event))
1035 {
1036     CloseDocuments(false);
1037 }
1038
1039 void wxDocManager::OnFileNew(wxCommandEvent& WXUNUSED(event))
1040 {
1041     CreateNewDocument();
1042 }
1043
1044 void wxDocManager::OnFileOpen(wxCommandEvent& WXUNUSED(event))
1045 {
1046     if ( !CreateDocument("") )
1047     {
1048         OnOpenFileFailure();
1049     }
1050 }
1051
1052 void wxDocManager::OnFileRevert(wxCommandEvent& WXUNUSED(event))
1053 {
1054     wxDocument *doc = GetCurrentDocument();
1055     if (!doc)
1056         return;
1057     doc->Revert();
1058 }
1059
1060 void wxDocManager::OnFileSave(wxCommandEvent& WXUNUSED(event))
1061 {
1062     wxDocument *doc = GetCurrentDocument();
1063     if (!doc)
1064         return;
1065     doc->Save();
1066 }
1067
1068 void wxDocManager::OnFileSaveAs(wxCommandEvent& WXUNUSED(event))
1069 {
1070     wxDocument *doc = GetCurrentDocument();
1071     if (!doc)
1072         return;
1073     doc->SaveAs();
1074 }
1075
1076 void wxDocManager::OnPrint(wxCommandEvent& WXUNUSED(event))
1077 {
1078 #if wxUSE_PRINTING_ARCHITECTURE
1079     wxView *view = GetActiveView();
1080     if (!view)
1081         return;
1082
1083     wxPrintout *printout = view->OnCreatePrintout();
1084     if (printout)
1085     {
1086         wxPrinter printer;
1087         printer.Print(view->GetFrame(), printout, true);
1088
1089         delete printout;
1090     }
1091 #endif // wxUSE_PRINTING_ARCHITECTURE
1092 }
1093
1094 void wxDocManager::OnPreview(wxCommandEvent& WXUNUSED(event))
1095 {
1096 #if wxUSE_PRINTING_ARCHITECTURE
1097     wxView *view = GetActiveView();
1098     if (!view)
1099         return;
1100
1101     wxPrintout *printout = view->OnCreatePrintout();
1102     if (printout)
1103     {
1104         // Pass two printout objects: for preview, and possible printing.
1105         wxPrintPreviewBase *
1106             preview = new wxPrintPreview(printout, view->OnCreatePrintout());
1107         if ( !preview->Ok() )
1108         {
1109             delete preview;
1110             wxLogError(_("Print preview creation failed."));
1111             return;
1112         }
1113
1114         wxPreviewFrame *
1115             frame = new wxPreviewFrame(preview, wxTheApp->GetTopWindow(),
1116                                        _("Print Preview"));
1117         frame->Centre(wxBOTH);
1118         frame->Initialize();
1119         frame->Show(true);
1120     }
1121 #endif // wxUSE_PRINTING_ARCHITECTURE
1122 }
1123
1124 void wxDocManager::OnUndo(wxCommandEvent& event)
1125 {
1126     wxCommandProcessor * const cmdproc = GetCurrentCommandProcessor();
1127     if ( !cmdproc )
1128     {
1129         event.Skip();
1130         return;
1131     }
1132
1133     cmdproc->Undo();
1134 }
1135
1136 void wxDocManager::OnRedo(wxCommandEvent& event)
1137 {
1138     wxCommandProcessor * const cmdproc = GetCurrentCommandProcessor();
1139     if ( !cmdproc )
1140     {
1141         event.Skip();
1142         return;
1143     }
1144
1145     cmdproc->Redo();
1146 }
1147
1148 // Handlers for UI update commands
1149
1150 void wxDocManager::OnUpdateFileOpen(wxUpdateUIEvent& event)
1151 {
1152     // CreateDocument() (which is called from OnFileOpen) may succeed
1153     // only when there is at least a template:
1154     event.Enable( GetTemplates().GetCount()>0 );
1155 }
1156
1157 void wxDocManager::OnUpdateDisableIfNoDoc(wxUpdateUIEvent& event)
1158 {
1159     event.Enable( GetCurrentDocument() != NULL );
1160 }
1161
1162 void wxDocManager::OnUpdateFileNew(wxUpdateUIEvent& event)
1163 {
1164     // CreateDocument() (which is called from OnFileNew) may succeed
1165     // only when there is at least a template:
1166     event.Enable( GetTemplates().GetCount()>0 );
1167 }
1168
1169 void wxDocManager::OnUpdateFileSave(wxUpdateUIEvent& event)
1170 {
1171     wxDocument * const doc = GetCurrentDocument();
1172     event.Enable( doc && !doc->AlreadySaved() );
1173 }
1174
1175 void wxDocManager::OnUpdateUndo(wxUpdateUIEvent& event)
1176 {
1177     wxCommandProcessor * const cmdproc = GetCurrentCommandProcessor();
1178     if ( !cmdproc )
1179     {
1180         event.Enable(false);
1181         return;
1182     }
1183
1184     event.Enable(cmdproc->CanUndo());
1185     cmdproc->SetMenuStrings();
1186 }
1187
1188 void wxDocManager::OnUpdateRedo(wxUpdateUIEvent& event)
1189 {
1190     wxCommandProcessor * const cmdproc = GetCurrentCommandProcessor();
1191     if ( !cmdproc )
1192     {
1193         event.Enable(false);
1194         return;
1195     }
1196
1197     event.Enable(cmdproc->CanRedo());
1198     cmdproc->SetMenuStrings();
1199 }
1200
1201 wxView *wxDocManager::GetActiveView() const
1202 {
1203     wxView *view = GetCurrentView();
1204
1205     if ( !view && !m_docs.empty() )
1206     {
1207         // if we have exactly one document, consider its view to be the current
1208         // one
1209         //
1210         // VZ: I'm not exactly sure why is this needed but this is how this
1211         //     code used to behave before the bug #9518 was fixed and it seems
1212         //     safer to preserve the old logic
1213         wxList::compatibility_iterator node = m_docs.GetFirst();
1214         if ( !node->GetNext() )
1215         {
1216             wxDocument *doc = static_cast<wxDocument *>(node->GetData());
1217             view = doc->GetFirstView();
1218         }
1219         //else: we have more than one document
1220     }
1221
1222     return view;
1223 }
1224
1225 bool wxDocManager::TryBefore(wxEvent& event)
1226 {
1227     wxView * const view = GetActiveView();
1228     return view && view->ProcessEventHere(event);
1229 }
1230
1231 namespace
1232 {
1233
1234 // helper function: return only the visible templates
1235 wxDocTemplates GetVisibleTemplates(const wxList& allTemplates)
1236 {
1237     // select only the visible templates
1238     const size_t totalNumTemplates = allTemplates.GetCount();
1239     wxDocTemplates templates;
1240     if ( totalNumTemplates )
1241     {
1242         templates.reserve(totalNumTemplates);
1243
1244         for ( wxList::const_iterator i = allTemplates.begin(),
1245                                    end = allTemplates.end();
1246               i != end;
1247               ++i )
1248         {
1249             wxDocTemplate * const temp = (wxDocTemplate *)*i;
1250             if ( temp->IsVisible() )
1251                 templates.push_back(temp);
1252         }
1253     }
1254
1255     return templates;
1256 }
1257
1258 } // anonymous namespace
1259
1260 wxDocument *wxDocManager::CreateDocument(const wxString& pathOrig, long flags)
1261 {
1262     // this ought to be const but SelectDocumentType/Path() are not
1263     // const-correct and can't be changed as, being virtual, this risks
1264     // breaking user code overriding them
1265     wxDocTemplates templates(GetVisibleTemplates(m_templates));
1266     const size_t numTemplates = templates.size();
1267     if ( !numTemplates )
1268     {
1269         // no templates can be used, can't create document
1270         return NULL;
1271     }
1272
1273
1274     // normally user should select the template to use but wxDOC_SILENT flag we
1275     // choose one ourselves
1276     wxString path = pathOrig;   // may be modified below
1277     wxDocTemplate *temp;
1278     if ( flags & wxDOC_SILENT )
1279     {
1280         wxASSERT_MSG( !path.empty(),
1281                       "using empty path with wxDOC_SILENT doesn't make sense" );
1282
1283         temp = FindTemplateForPath(path);
1284         if ( !temp )
1285         {
1286             wxLogWarning(_("The format of file '%s' couldn't be determined."),
1287                          path);
1288         }
1289     }
1290     else // not silent, ask the user
1291     {
1292         // for the new file we need just the template, for an existing one we
1293         // need the template and the path, unless it's already specified
1294         if ( (flags & wxDOC_NEW) || !path.empty() )
1295             temp = SelectDocumentType(&templates[0], numTemplates);
1296         else
1297             temp = SelectDocumentPath(&templates[0], numTemplates, path, flags);
1298     }
1299
1300     if ( !temp )
1301         return NULL;
1302
1303     // check whether the document with this path is already opened
1304     if ( !path.empty() )
1305     {
1306         const wxFileName fn(path);
1307         for ( wxList::const_iterator i = m_docs.begin(); i != m_docs.end(); ++i )
1308         {
1309             wxDocument * const doc = (wxDocument*)*i;
1310
1311             if ( fn == doc->GetFilename() )
1312             {
1313                 // file already open, just activate it and return
1314                 if ( doc->GetFirstView() )
1315                 {
1316                     ActivateView(doc->GetFirstView());
1317                     if ( doc->GetDocumentWindow() )
1318                         doc->GetDocumentWindow()->SetFocus();
1319                     return doc;
1320                 }
1321             }
1322         }
1323     }
1324
1325
1326     // no, we need to create a new document
1327
1328
1329     // if we've reached the max number of docs, close the first one.
1330     if ( (int)GetDocuments().GetCount() >= m_maxDocsOpen )
1331     {
1332         if ( !CloseDocument((wxDocument *)GetDocuments().GetFirst()->GetData()) )
1333         {
1334             // can't open the new document if closing the old one failed
1335             return NULL;
1336         }
1337     }
1338
1339
1340     // do create and initialize the new document finally
1341     wxDocument * const docNew = temp->CreateDocument(path, flags);
1342     if ( !docNew )
1343         return NULL;
1344
1345     docNew->SetDocumentName(temp->GetDocumentName());
1346     docNew->SetDocumentTemplate(temp);
1347
1348     wxTRY
1349     {
1350         // call the appropriate function depending on whether we're creating a
1351         // new file or opening an existing one
1352         if ( !(flags & wxDOC_NEW ? docNew->OnNewDocument()
1353                                  : docNew->OnOpenDocument(path)) )
1354         {
1355             docNew->DeleteAllViews();
1356             return NULL;
1357         }
1358     }
1359     wxCATCH_ALL( docNew->DeleteAllViews(); throw; )
1360
1361     // add the successfully opened file to MRU, but only if we're going to be
1362     // able to reopen it successfully later which requires the template for
1363     // this document to be retrievable from the file extension
1364     if ( !(flags & wxDOC_NEW) && temp->FileMatchesTemplate(path) )
1365         AddFileToHistory(path);
1366
1367     return docNew;
1368 }
1369
1370 wxView *wxDocManager::CreateView(wxDocument *doc, long flags)
1371 {
1372     wxDocTemplates templates(GetVisibleTemplates(m_templates));
1373     const size_t numTemplates = templates.size();
1374
1375     if ( numTemplates == 0 )
1376         return NULL;
1377
1378     wxDocTemplate * const
1379     temp = numTemplates == 1 ? templates[0]
1380                              : SelectViewType(&templates[0], numTemplates);
1381
1382     if ( !temp )
1383         return NULL;
1384
1385     wxView *view = temp->CreateView(doc, flags);
1386     if ( view )
1387         view->SetViewName(temp->GetViewName());
1388     return view;
1389 }
1390
1391 // Not yet implemented
1392 void
1393 wxDocManager::DeleteTemplate(wxDocTemplate *WXUNUSED(temp), long WXUNUSED(flags))
1394 {
1395 }
1396
1397 // Not yet implemented
1398 bool wxDocManager::FlushDoc(wxDocument *WXUNUSED(doc))
1399 {
1400     return false;
1401 }
1402
1403 wxDocument *wxDocManager::GetCurrentDocument() const
1404 {
1405     wxView * const view = GetActiveView();
1406     return view ? view->GetDocument() : NULL;
1407 }
1408
1409 wxCommandProcessor *wxDocManager::GetCurrentCommandProcessor() const
1410 {
1411     wxDocument * const doc = GetCurrentDocument();
1412     return doc ? doc->GetCommandProcessor() : NULL;
1413 }
1414
1415 // Make a default name for a new document
1416 #if WXWIN_COMPATIBILITY_2_8
1417 bool wxDocManager::MakeDefaultName(wxString& WXUNUSED(name))
1418 {
1419     // we consider that this function can only be overridden by the user code,
1420     // not called by it as it only makes sense to call it internally, so we
1421     // don't bother to return anything from here
1422     return false;
1423 }
1424 #endif // WXWIN_COMPATIBILITY_2_8
1425
1426 wxString wxDocManager::MakeNewDocumentName()
1427 {
1428     wxString name;
1429
1430 #if WXWIN_COMPATIBILITY_2_8
1431     if ( !MakeDefaultName(name) )
1432 #endif // WXWIN_COMPATIBILITY_2_8
1433     {
1434         name.Printf(_("unnamed%d"), m_defaultDocumentNameCounter);
1435         m_defaultDocumentNameCounter++;
1436     }
1437
1438     return name;
1439 }
1440
1441 // Make a frame title (override this to do something different)
1442 // If docName is empty, a document is not currently active.
1443 wxString wxDocManager::MakeFrameTitle(wxDocument* doc)
1444 {
1445     wxString appName = wxTheApp->GetAppDisplayName();
1446     wxString title;
1447     if (!doc)
1448         title = appName;
1449     else
1450     {
1451         wxString docName = doc->GetUserReadableName();
1452         title = docName + wxString(_(" - ")) + appName;
1453     }
1454     return title;
1455 }
1456
1457
1458 // Not yet implemented
1459 wxDocTemplate *wxDocManager::MatchTemplate(const wxString& WXUNUSED(path))
1460 {
1461     return NULL;
1462 }
1463
1464 // File history management
1465 void wxDocManager::AddFileToHistory(const wxString& file)
1466 {
1467     if (m_fileHistory)
1468         m_fileHistory->AddFileToHistory(file);
1469 }
1470
1471 void wxDocManager::RemoveFileFromHistory(size_t i)
1472 {
1473     if (m_fileHistory)
1474         m_fileHistory->RemoveFileFromHistory(i);
1475 }
1476
1477 wxString wxDocManager::GetHistoryFile(size_t i) const
1478 {
1479     wxString histFile;
1480
1481     if (m_fileHistory)
1482         histFile = m_fileHistory->GetHistoryFile(i);
1483
1484     return histFile;
1485 }
1486
1487 void wxDocManager::FileHistoryUseMenu(wxMenu *menu)
1488 {
1489     if (m_fileHistory)
1490         m_fileHistory->UseMenu(menu);
1491 }
1492
1493 void wxDocManager::FileHistoryRemoveMenu(wxMenu *menu)
1494 {
1495     if (m_fileHistory)
1496         m_fileHistory->RemoveMenu(menu);
1497 }
1498
1499 #if wxUSE_CONFIG
1500 void wxDocManager::FileHistoryLoad(const wxConfigBase& config)
1501 {
1502     if (m_fileHistory)
1503         m_fileHistory->Load(config);
1504 }
1505
1506 void wxDocManager::FileHistorySave(wxConfigBase& config)
1507 {
1508     if (m_fileHistory)
1509         m_fileHistory->Save(config);
1510 }
1511 #endif
1512
1513 void wxDocManager::FileHistoryAddFilesToMenu(wxMenu* menu)
1514 {
1515     if (m_fileHistory)
1516         m_fileHistory->AddFilesToMenu(menu);
1517 }
1518
1519 void wxDocManager::FileHistoryAddFilesToMenu()
1520 {
1521     if (m_fileHistory)
1522         m_fileHistory->AddFilesToMenu();
1523 }
1524
1525 size_t wxDocManager::GetHistoryFilesCount() const
1526 {
1527     return m_fileHistory ? m_fileHistory->GetCount() : 0;
1528 }
1529
1530
1531 // Find out the document template via matching in the document file format
1532 // against that of the template
1533 wxDocTemplate *wxDocManager::FindTemplateForPath(const wxString& path)
1534 {
1535     wxDocTemplate *theTemplate = NULL;
1536
1537     // Find the template which this extension corresponds to
1538     for (size_t i = 0; i < m_templates.GetCount(); i++)
1539     {
1540         wxDocTemplate *temp = (wxDocTemplate *)m_templates.Item(i)->GetData();
1541         if ( temp->FileMatchesTemplate(path) )
1542         {
1543             theTemplate = temp;
1544             break;
1545         }
1546     }
1547     return theTemplate;
1548 }
1549
1550 // Prompts user to open a file, using file specs in templates.
1551 // Must extend the file selector dialog or implement own; OR
1552 // match the extension to the template extension.
1553
1554 wxDocTemplate *wxDocManager::SelectDocumentPath(wxDocTemplate **templates,
1555                                                 int noTemplates,
1556                                                 wxString& path,
1557                                                 long WXUNUSED(flags),
1558                                                 bool WXUNUSED(save))
1559 {
1560 #ifdef wxHAS_MULTIPLE_FILEDLG_FILTERS
1561     wxString descrBuf;
1562
1563     for (int i = 0; i < noTemplates; i++)
1564     {
1565         if (templates[i]->IsVisible())
1566         {
1567             // add a '|' to separate this filter from the previous one
1568             if ( !descrBuf.empty() )
1569                 descrBuf << wxT('|');
1570
1571             descrBuf << templates[i]->GetDescription()
1572                 << wxT(" (") << templates[i]->GetFileFilter() << wxT(") |")
1573                 << templates[i]->GetFileFilter();
1574         }
1575     }
1576 #else
1577     wxString descrBuf = wxT("*.*");
1578     wxUnusedVar(noTemplates);
1579 #endif
1580
1581     int FilterIndex = -1;
1582
1583     wxString pathTmp = wxFileSelectorEx(_("Open File"),
1584                                         GetLastDirectory(),
1585                                         wxEmptyString,
1586                                         &FilterIndex,
1587                                         descrBuf);
1588
1589     wxDocTemplate *theTemplate = NULL;
1590     if (!pathTmp.empty())
1591     {
1592         if (!wxFileExists(pathTmp))
1593         {
1594             wxString msgTitle;
1595             if (!wxTheApp->GetAppDisplayName().empty())
1596                 msgTitle = wxTheApp->GetAppDisplayName();
1597             else
1598                 msgTitle = wxString(_("File error"));
1599
1600             wxMessageBox(_("Sorry, could not open this file."),
1601                          msgTitle,
1602                          wxOK | wxICON_EXCLAMATION | wxCENTRE);
1603
1604             path = wxEmptyString;
1605             return NULL;
1606         }
1607
1608         SetLastDirectory(wxPathOnly(pathTmp));
1609
1610         path = pathTmp;
1611
1612         // first choose the template using the extension, if this fails (i.e.
1613         // wxFileSelectorEx() didn't fill it), then use the path
1614         if ( FilterIndex != -1 )
1615             theTemplate = templates[FilterIndex];
1616         if ( !theTemplate )
1617             theTemplate = FindTemplateForPath(path);
1618         if ( !theTemplate )
1619         {
1620             // Since we do not add files with non-default extensions to the
1621             // file history this can only happen if the application changes the
1622             // allowed templates in runtime.
1623             wxMessageBox(_("Sorry, the format for this file is unknown."),
1624                          _("Open File"),
1625                          wxOK | wxICON_EXCLAMATION | wxCENTRE);
1626         }
1627     }
1628     else
1629     {
1630         path.clear();
1631     }
1632
1633     return theTemplate;
1634 }
1635
1636 wxDocTemplate *wxDocManager::SelectDocumentType(wxDocTemplate **templates,
1637                                                 int noTemplates, bool sort)
1638 {
1639     wxArrayString strings;
1640     wxScopedArray<wxDocTemplate *> data(new wxDocTemplate *[noTemplates]);
1641     int i;
1642     int n = 0;
1643
1644     for (i = 0; i < noTemplates; i++)
1645     {
1646         if (templates[i]->IsVisible())
1647         {
1648             int j;
1649             bool want = true;
1650             for (j = 0; j < n; j++)
1651             {
1652                 //filter out NOT unique documents + view combinations
1653                 if ( templates[i]->m_docTypeName == data[j]->m_docTypeName &&
1654                      templates[i]->m_viewTypeName == data[j]->m_viewTypeName
1655                    )
1656                     want = false;
1657             }
1658
1659             if ( want )
1660             {
1661                 strings.Add(templates[i]->m_description);
1662
1663                 data[n] = templates[i];
1664                 n ++;
1665             }
1666         }
1667     }  // for
1668
1669     if (sort)
1670     {
1671         strings.Sort(); // ascending sort
1672         // Yes, this will be slow, but template lists
1673         // are typically short.
1674         int j;
1675         n = strings.Count();
1676         for (i = 0; i < n; i++)
1677         {
1678             for (j = 0; j < noTemplates; j++)
1679             {
1680                 if (strings[i] == templates[j]->m_description)
1681                     data[i] = templates[j];
1682             }
1683         }
1684     }
1685
1686     wxDocTemplate *theTemplate;
1687
1688     switch ( n )
1689     {
1690         case 0:
1691             // no visible templates, hence nothing to choose from
1692             theTemplate = NULL;
1693             break;
1694
1695         case 1:
1696             // don't propose the user to choose if he has no choice
1697             theTemplate = data[0];
1698             break;
1699
1700         default:
1701             // propose the user to choose one of several
1702             theTemplate = (wxDocTemplate *)wxGetSingleChoiceData
1703                           (
1704                             _("Select a document template"),
1705                             _("Templates"),
1706                             strings,
1707                             (void **)data.get()
1708                           );
1709     }
1710
1711     return theTemplate;
1712 }
1713
1714 wxDocTemplate *wxDocManager::SelectViewType(wxDocTemplate **templates,
1715                                             int noTemplates, bool sort)
1716 {
1717     wxArrayString strings;
1718     wxScopedArray<wxDocTemplate *> data(new wxDocTemplate *[noTemplates]);
1719     int i;
1720     int n = 0;
1721
1722     for (i = 0; i < noTemplates; i++)
1723     {
1724         wxDocTemplate *templ = templates[i];
1725         if ( templ->IsVisible() && !templ->GetViewName().empty() )
1726         {
1727             int j;
1728             bool want = true;
1729             for (j = 0; j < n; j++)
1730             {
1731                 //filter out NOT unique views
1732                 if ( templates[i]->m_viewTypeName == data[j]->m_viewTypeName )
1733                     want = false;
1734             }
1735
1736             if ( want )
1737             {
1738                 strings.Add(templ->m_viewTypeName);
1739                 data[n] = templ;
1740                 n ++;
1741             }
1742         }
1743     }
1744
1745     if (sort)
1746     {
1747         strings.Sort(); // ascending sort
1748         // Yes, this will be slow, but template lists
1749         // are typically short.
1750         int j;
1751         n = strings.Count();
1752         for (i = 0; i < n; i++)
1753         {
1754             for (j = 0; j < noTemplates; j++)
1755             {
1756                 if (strings[i] == templates[j]->m_viewTypeName)
1757                     data[i] = templates[j];
1758             }
1759         }
1760     }
1761
1762     wxDocTemplate *theTemplate;
1763
1764     // the same logic as above
1765     switch ( n )
1766     {
1767         case 0:
1768             theTemplate = NULL;
1769             break;
1770
1771         case 1:
1772             theTemplate = data[0];
1773             break;
1774
1775         default:
1776             theTemplate = (wxDocTemplate *)wxGetSingleChoiceData
1777                           (
1778                             _("Select a document view"),
1779                             _("Views"),
1780                             strings,
1781                             (void **)data.get()
1782                           );
1783
1784     }
1785
1786     return theTemplate;
1787 }
1788
1789 void wxDocManager::AssociateTemplate(wxDocTemplate *temp)
1790 {
1791     if (!m_templates.Member(temp))
1792         m_templates.Append(temp);
1793 }
1794
1795 void wxDocManager::DisassociateTemplate(wxDocTemplate *temp)
1796 {
1797     m_templates.DeleteObject(temp);
1798 }
1799
1800 // Add and remove a document from the manager's list
1801 void wxDocManager::AddDocument(wxDocument *doc)
1802 {
1803     if (!m_docs.Member(doc))
1804         m_docs.Append(doc);
1805 }
1806
1807 void wxDocManager::RemoveDocument(wxDocument *doc)
1808 {
1809     m_docs.DeleteObject(doc);
1810 }
1811
1812 // Views or windows should inform the document manager
1813 // when a view is going in or out of focus
1814 void wxDocManager::ActivateView(wxView *view, bool activate)
1815 {
1816     if ( activate )
1817     {
1818         m_currentView = view;
1819     }
1820     else // deactivate
1821     {
1822         if ( m_currentView == view )
1823         {
1824             // don't keep stale pointer
1825             m_currentView = NULL;
1826         }
1827     }
1828 }
1829
1830 // ----------------------------------------------------------------------------
1831 // wxDocChildFrameAnyBase
1832 // ----------------------------------------------------------------------------
1833
1834 bool wxDocChildFrameAnyBase::CloseView(wxCloseEvent& event)
1835 {
1836     if ( m_childView )
1837     {
1838         if ( event.CanVeto() && !m_childView->Close(false) )
1839         {
1840             event.Veto();
1841             return false;
1842         }
1843
1844         m_childView->Activate(false);
1845
1846         // it is important to reset m_childView frame pointer to NULL before
1847         // deleting it because while normally it is the frame which deletes the
1848         // view when it's closed, the view also closes the frame if it is
1849         // deleted directly not by us as indicated by its doc child frame
1850         // pointer still being set
1851         m_childView->SetDocChildFrame(NULL);
1852         delete m_childView;
1853         m_childView = NULL;
1854     }
1855
1856     m_childDocument = NULL;
1857
1858     return true;
1859 }
1860
1861 // ----------------------------------------------------------------------------
1862 // Default parent frame
1863 // ----------------------------------------------------------------------------
1864
1865 BEGIN_EVENT_TABLE(wxDocParentFrame, wxFrame)
1866     EVT_MENU(wxID_EXIT, wxDocParentFrame::OnExit)
1867     EVT_MENU_RANGE(wxID_FILE1, wxID_FILE9, wxDocParentFrame::OnMRUFile)
1868     EVT_CLOSE(wxDocParentFrame::OnCloseWindow)
1869 END_EVENT_TABLE()
1870
1871 wxDocParentFrame::wxDocParentFrame()
1872 {
1873     m_docManager = NULL;
1874 }
1875
1876 wxDocParentFrame::wxDocParentFrame(wxDocManager *manager,
1877                                    wxFrame *frame,
1878                                    wxWindowID id,
1879                                    const wxString& title,
1880                                    const wxPoint& pos,
1881                                    const wxSize& size,
1882                                    long style,
1883                                    const wxString& name)
1884                 : wxFrame(frame, id, title, pos, size, style, name)
1885 {
1886     m_docManager = manager;
1887 }
1888
1889 bool wxDocParentFrame::Create(wxDocManager *manager,
1890                               wxFrame *frame,
1891                               wxWindowID id,
1892                               const wxString& title,
1893                               const wxPoint& pos,
1894                               const wxSize& size,
1895                               long style,
1896                               const wxString& name)
1897 {
1898     m_docManager = manager;
1899     return base_type::Create(frame, id, title, pos, size, style, name);
1900 }
1901
1902 void wxDocParentFrame::OnExit(wxCommandEvent& WXUNUSED(event))
1903 {
1904     Close();
1905 }
1906
1907 void wxDocParentFrame::OnMRUFile(wxCommandEvent& event)
1908 {
1909     int n = event.GetId() - wxID_FILE1;  // the index in MRU list
1910     wxString filename(m_docManager->GetHistoryFile(n));
1911     if ( filename.empty() )
1912         return;
1913
1914     wxString errMsg; // must contain exactly one "%s" if non-empty
1915     if ( wxFile::Exists(filename) )
1916     {
1917         // try to open it
1918         if ( m_docManager->CreateDocument(filename, wxDOC_SILENT) )
1919             return;
1920
1921         errMsg = _("The file '%s' couldn't be opened.");
1922     }
1923     else // file doesn't exist
1924     {
1925         errMsg = _("The file '%s' doesn't exist and couldn't be opened.");
1926     }
1927
1928
1929     wxASSERT_MSG( !errMsg.empty(), "should have an error message" );
1930
1931     // remove the file which we can't open from the MRU list
1932     m_docManager->RemoveFileFromHistory(n);
1933
1934     // and tell the user about it
1935     wxLogError(errMsg + '\n' +
1936                _("It has been removed from the most recently used files list."),
1937                filename);
1938 }
1939
1940 // Extend event processing to search the view's event table
1941 bool wxDocParentFrame::TryBefore(wxEvent& event)
1942 {
1943     if ( m_docManager && m_docManager->ProcessEventHere(event) )
1944         return true;
1945
1946     return wxFrame::TryBefore(event);
1947 }
1948
1949 // Define the behaviour for the frame closing
1950 // - must delete all frames except for the main one.
1951 void wxDocParentFrame::OnCloseWindow(wxCloseEvent& event)
1952 {
1953     if (m_docManager->Clear(!event.CanVeto()))
1954     {
1955         Destroy();
1956     }
1957     else
1958         event.Veto();
1959 }
1960
1961 #if wxUSE_PRINTING_ARCHITECTURE
1962
1963 wxDocPrintout::wxDocPrintout(wxView *view, const wxString& title)
1964              : wxPrintout(title)
1965 {
1966     m_printoutView = view;
1967 }
1968
1969 bool wxDocPrintout::OnPrintPage(int WXUNUSED(page))
1970 {
1971     wxDC *dc = GetDC();
1972
1973     // Get the logical pixels per inch of screen and printer
1974     int ppiScreenX, ppiScreenY;
1975     GetPPIScreen(&ppiScreenX, &ppiScreenY);
1976     wxUnusedVar(ppiScreenY);
1977     int ppiPrinterX, ppiPrinterY;
1978     GetPPIPrinter(&ppiPrinterX, &ppiPrinterY);
1979     wxUnusedVar(ppiPrinterY);
1980
1981     // This scales the DC so that the printout roughly represents the
1982     // the screen scaling. The text point size _should_ be the right size
1983     // but in fact is too small for some reason. This is a detail that will
1984     // need to be addressed at some point but can be fudged for the
1985     // moment.
1986     float scale = (float)((float)ppiPrinterX/(float)ppiScreenX);
1987
1988     // Now we have to check in case our real page size is reduced
1989     // (e.g. because we're drawing to a print preview memory DC)
1990     int pageWidth, pageHeight;
1991     int w, h;
1992     dc->GetSize(&w, &h);
1993     GetPageSizePixels(&pageWidth, &pageHeight);
1994     wxUnusedVar(pageHeight);
1995
1996     // If printer pageWidth == current DC width, then this doesn't
1997     // change. But w might be the preview bitmap width, so scale down.
1998     float overallScale = scale * (float)(w/(float)pageWidth);
1999     dc->SetUserScale(overallScale, overallScale);
2000
2001     if (m_printoutView)
2002     {
2003         m_printoutView->OnDraw(dc);
2004     }
2005     return true;
2006 }
2007
2008 bool wxDocPrintout::HasPage(int pageNum)
2009 {
2010     return (pageNum == 1);
2011 }
2012
2013 bool wxDocPrintout::OnBeginDocument(int startPage, int endPage)
2014 {
2015     if (!wxPrintout::OnBeginDocument(startPage, endPage))
2016         return false;
2017
2018     return true;
2019 }
2020
2021 void wxDocPrintout::GetPageInfo(int *minPage, int *maxPage,
2022                                 int *selPageFrom, int *selPageTo)
2023 {
2024     *minPage = 1;
2025     *maxPage = 1;
2026     *selPageFrom = 1;
2027     *selPageTo = 1;
2028 }
2029
2030 #endif // wxUSE_PRINTING_ARCHITECTURE
2031
2032 // ----------------------------------------------------------------------------
2033 // File history (a.k.a. MRU, most recently used, files list)
2034 // ----------------------------------------------------------------------------
2035
2036 wxFileHistory::wxFileHistory(size_t maxFiles, wxWindowID idBase)
2037 {
2038     m_fileMaxFiles = maxFiles;
2039     m_idBase = idBase;
2040 }
2041
2042 void wxFileHistory::AddFileToHistory(const wxString& file)
2043 {
2044     // check if we don't already have this file
2045     const wxFileName fnNew(file);
2046     size_t i,
2047            numFiles = m_fileHistory.size();
2048     for ( i = 0; i < numFiles; i++ )
2049     {
2050         if ( fnNew == m_fileHistory[i] )
2051         {
2052             // we do have it, move it to the top of the history
2053             RemoveFileFromHistory(i);
2054             numFiles--;
2055             break;
2056         }
2057     }
2058
2059     // if we already have a full history, delete the one at the end
2060     if ( numFiles == m_fileMaxFiles )
2061     {
2062         RemoveFileFromHistory(--numFiles);
2063     }
2064
2065     // add a new menu item to all file menus (they will be updated below)
2066     for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2067         node;
2068         node = node->GetNext() )
2069     {
2070         wxMenu * const menu = (wxMenu *)node->GetData();
2071
2072         if ( !numFiles && menu->GetMenuItemCount() )
2073             menu->AppendSeparator();
2074
2075         // label doesn't matter, it will be set below anyhow, but it can't
2076         // be empty (this is supposed to indicate a stock item)
2077         menu->Append(m_idBase + numFiles, " ");
2078     }
2079
2080     // insert the new file in the beginning of the file history
2081     m_fileHistory.insert(m_fileHistory.begin(), file);
2082     numFiles++;
2083
2084     // update the labels in all menus
2085     for ( i = 0; i < numFiles; i++ )
2086     {
2087         // if in same directory just show the filename; otherwise the full path
2088         const wxFileName fnOld(m_fileHistory[i]);
2089
2090         wxString pathInMenu;
2091         if ( fnOld.GetPath() == fnNew.GetPath() )
2092         {
2093             pathInMenu = fnOld.GetFullName();
2094         }
2095         else // file in different directory
2096         {
2097             // absolute path; could also set relative path
2098             pathInMenu = m_fileHistory[i];
2099         }
2100
2101         for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2102               node;
2103               node = node->GetNext() )
2104         {
2105             wxMenu * const menu = (wxMenu *)node->GetData();
2106
2107             menu->SetLabel(m_idBase + i, GetMRUEntryLabel(i, pathInMenu));
2108         }
2109     }
2110 }
2111
2112 void wxFileHistory::RemoveFileFromHistory(size_t i)
2113 {
2114     size_t numFiles = m_fileHistory.size();
2115     wxCHECK_RET( i < numFiles,
2116                  wxT("invalid index in wxFileHistory::RemoveFileFromHistory") );
2117
2118     // delete the element from the array
2119     m_fileHistory.RemoveAt(i);
2120     numFiles--;
2121
2122     for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2123           node;
2124           node = node->GetNext() )
2125     {
2126         wxMenu * const menu = (wxMenu *) node->GetData();
2127
2128         // shift filenames up
2129         for ( size_t j = i; j < numFiles; j++ )
2130         {
2131             menu->SetLabel(m_idBase + j, GetMRUEntryLabel(j, m_fileHistory[j]));
2132         }
2133
2134         // delete the last menu item which is unused now
2135         const wxWindowID lastItemId = m_idBase + numFiles;
2136         if ( menu->FindItem(lastItemId) )
2137             menu->Delete(lastItemId);
2138
2139         // delete the last separator too if no more files are left
2140         if ( m_fileHistory.empty() )
2141         {
2142             const wxMenuItemList::compatibility_iterator
2143                 nodeLast = menu->GetMenuItems().GetLast();
2144             if ( nodeLast )
2145             {
2146                 wxMenuItem * const lastMenuItem = nodeLast->GetData();
2147                 if ( lastMenuItem->IsSeparator() )
2148                     menu->Delete(lastMenuItem);
2149             }
2150             //else: menu is empty somehow
2151         }
2152     }
2153 }
2154
2155 void wxFileHistory::UseMenu(wxMenu *menu)
2156 {
2157     if ( !m_fileMenus.Member(menu) )
2158         m_fileMenus.Append(menu);
2159 }
2160
2161 void wxFileHistory::RemoveMenu(wxMenu *menu)
2162 {
2163     m_fileMenus.DeleteObject(menu);
2164 }
2165
2166 #if wxUSE_CONFIG
2167 void wxFileHistory::Load(const wxConfigBase& config)
2168 {
2169     m_fileHistory.Clear();
2170
2171     wxString buf;
2172     buf.Printf(wxT("file%d"), 1);
2173
2174     wxString historyFile;
2175     while ((m_fileHistory.GetCount() < m_fileMaxFiles) &&
2176            config.Read(buf, &historyFile) && !historyFile.empty())
2177     {
2178         m_fileHistory.Add(historyFile);
2179
2180         buf.Printf(wxT("file%d"), (int)m_fileHistory.GetCount()+1);
2181         historyFile = wxEmptyString;
2182     }
2183
2184     AddFilesToMenu();
2185 }
2186
2187 void wxFileHistory::Save(wxConfigBase& config)
2188 {
2189     size_t i;
2190     for (i = 0; i < m_fileMaxFiles; i++)
2191     {
2192         wxString buf;
2193         buf.Printf(wxT("file%d"), (int)i+1);
2194         if (i < m_fileHistory.GetCount())
2195             config.Write(buf, wxString(m_fileHistory[i]));
2196         else
2197             config.Write(buf, wxEmptyString);
2198     }
2199 }
2200 #endif // wxUSE_CONFIG
2201
2202 void wxFileHistory::AddFilesToMenu()
2203 {
2204     if ( m_fileHistory.empty() )
2205         return;
2206
2207     for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2208           node;
2209           node = node->GetNext() )
2210     {
2211         AddFilesToMenu((wxMenu *) node->GetData());
2212     }
2213 }
2214
2215 void wxFileHistory::AddFilesToMenu(wxMenu* menu)
2216 {
2217     if ( m_fileHistory.empty() )
2218         return;
2219
2220     if ( menu->GetMenuItemCount() )
2221         menu->AppendSeparator();
2222
2223     for ( size_t i = 0; i < m_fileHistory.GetCount(); i++ )
2224     {
2225         menu->Append(m_idBase + i, GetMRUEntryLabel(i, m_fileHistory[i]));
2226     }
2227 }
2228
2229 // ----------------------------------------------------------------------------
2230 // Permits compatibility with existing file formats and functions that
2231 // manipulate files directly
2232 // ----------------------------------------------------------------------------
2233
2234 #if wxUSE_STD_IOSTREAM
2235
2236 bool wxTransferFileToStream(const wxString& filename, wxSTD ostream& stream)
2237 {
2238 #if wxUSE_FFILE
2239     wxFFile file(filename, wxT("rb"));
2240 #elif wxUSE_FILE
2241     wxFile file(filename, wxFile::read);
2242 #endif
2243     if ( !file.IsOpened() )
2244         return false;
2245
2246     char buf[4096];
2247
2248     size_t nRead;
2249     do
2250     {
2251         nRead = file.Read(buf, WXSIZEOF(buf));
2252         if ( file.Error() )
2253             return false;
2254
2255         stream.write(buf, nRead);
2256         if ( !stream )
2257             return false;
2258     }
2259     while ( !file.Eof() );
2260
2261     return true;
2262 }
2263
2264 bool wxTransferStreamToFile(wxSTD istream& stream, const wxString& filename)
2265 {
2266 #if wxUSE_FFILE
2267     wxFFile file(filename, wxT("wb"));
2268 #elif wxUSE_FILE
2269     wxFile file(filename, wxFile::write);
2270 #endif
2271     if ( !file.IsOpened() )
2272         return false;
2273
2274     char buf[4096];
2275     do
2276     {
2277         stream.read(buf, WXSIZEOF(buf));
2278         if ( !stream.bad() ) // fail may be set on EOF, don't use operator!()
2279         {
2280             if ( !file.Write(buf, stream.gcount()) )
2281                 return false;
2282         }
2283     }
2284     while ( !stream.eof() );
2285
2286     return true;
2287 }
2288
2289 #else // !wxUSE_STD_IOSTREAM
2290
2291 bool wxTransferFileToStream(const wxString& filename, wxOutputStream& stream)
2292 {
2293 #if wxUSE_FFILE
2294     wxFFile file(filename, wxT("rb"));
2295 #elif wxUSE_FILE
2296     wxFile file(filename, wxFile::read);
2297 #endif
2298     if ( !file.IsOpened() )
2299         return false;
2300
2301     char buf[4096];
2302
2303     size_t nRead;
2304     do
2305     {
2306         nRead = file.Read(buf, WXSIZEOF(buf));
2307         if ( file.Error() )
2308             return false;
2309
2310         stream.Write(buf, nRead);
2311         if ( !stream )
2312             return false;
2313     }
2314     while ( !file.Eof() );
2315
2316     return true;
2317 }
2318
2319 bool wxTransferStreamToFile(wxInputStream& stream, const wxString& filename)
2320 {
2321 #if wxUSE_FFILE
2322     wxFFile file(filename, wxT("wb"));
2323 #elif wxUSE_FILE
2324     wxFile file(filename, wxFile::write);
2325 #endif
2326     if ( !file.IsOpened() )
2327         return false;
2328
2329     char buf[4096];
2330     for ( ;; )
2331     {
2332         stream.Read(buf, WXSIZEOF(buf));
2333
2334         const size_t nRead = stream.LastRead();
2335         if ( !nRead )
2336         {
2337             if ( stream.Eof() )
2338                 break;
2339
2340             return false;
2341         }
2342
2343         if ( !file.Write(buf, nRead) )
2344             return false;
2345     }
2346
2347     return true;
2348 }
2349
2350 #endif // wxUSE_STD_IOSTREAM/!wxUSE_STD_IOSTREAM
2351
2352 #endif // wxUSE_DOC_VIEW_ARCHITECTURE