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 void wxDocument::Modify(bool mod)
 237 {
 238     if (mod != m_documentModified)
 239     {
 240         m_documentModified = mod;
 241
 242         // Allow views to append asterix to the title
 243         wxView* view = GetFirstView();
 244         if (view) view->OnChangeFilename();
 245     }
 246 }
 247
 248 wxDocManager *wxDocument::GetDocumentManager() const
 249 {
 250     return m_documentTemplate ? m_documentTemplate->GetDocumentManager() : NULL;
 251 }
 252
 253 bool wxDocument::OnNewDocument()
 254 {
 255     // notice that there is no need to neither reset nor even check the
 256     // modified flag here as the document itself is a new object (this is only
 257     // called from CreateDocument()) and so it shouldn't be saved anyhow even
 258     // if it is modified -- this could happen if the user code creates
 259     // documents pre-filled with some user-entered (and which hence must not be
 260     // lost) information
 261
 262     SetDocumentSaved(false);
 263
 264     const wxString name = GetDocumentManager()->MakeNewDocumentName();
 265     SetTitle(name);
 266     SetFilename(name, true);
 267
 268     return true;
 269 }
 270
 271 bool wxDocument::Save()
 272 {
 273     if ( AlreadySaved() )
 274         return true;
 275
 276     if ( m_documentFile.empty() || !m_savedYet )
 277         return SaveAs();
 278
 279     return OnSaveDocument(m_documentFile);
 280 }
 281
 282 bool wxDocument::SaveAs()
 283 {
 284     wxDocTemplate *docTemplate = GetDocumentTemplate();
 285     if (!docTemplate)
 286         return false;
 287
 288 #ifdef wxHAS_MULTIPLE_FILEDLG_FILTERS
 289     wxString filter = docTemplate->GetDescription() + wxT(" (") +
 290         docTemplate->GetFileFilter() + wxT(")|") +
 291         docTemplate->GetFileFilter();
 292
 293     // Now see if there are some other template with identical view and document
 294     // classes, whose filters may also be used.
 295     if (docTemplate->GetViewClassInfo() && docTemplate->GetDocClassInfo())
 296     {
 297         wxList::compatibility_iterator
 298             node = docTemplate->GetDocumentManager()->GetTemplates().GetFirst();
 299         while (node)
 300         {
 301             wxDocTemplate *t = (wxDocTemplate*) node->GetData();
 302
 303             if (t->IsVisible() && t != docTemplate &&
 304                 t->GetViewClassInfo() == docTemplate->GetViewClassInfo() &&
 305                 t->GetDocClassInfo() == docTemplate->GetDocClassInfo())
 306             {
 307                 // add a '|' to separate this filter from the previous one
 308                 if ( !filter.empty() )
 309                     filter << wxT('|');
 310
 311                 filter << t->GetDescription()
 312                        << wxT(" (") << t->GetFileFilter() << wxT(") |")
 313                        << t->GetFileFilter();
 314             }
 315
 316             node = node->GetNext();
 317         }
 318     }
 319 #else
 320     wxString filter = docTemplate->GetFileFilter() ;
 321 #endif
 322
 323     wxString defaultDir = docTemplate->GetDirectory();
 324     if ( defaultDir.empty() )
 325     {
 326         defaultDir = wxPathOnly(GetFilename());
 327         if ( defaultDir.empty() )
 328             defaultDir = GetDocumentManager()->GetLastDirectory();
 329     }
 330
 331     wxString fileName = wxFileSelector(_("Save As"),
 332             defaultDir,
 333             wxFileNameFromPath(GetFilename()),
 334             docTemplate->GetDefaultExtension(),
 335             filter,
 336             wxFD_SAVE | wxFD_OVERWRITE_PROMPT,
 337             GetDocumentWindow());
 338
 339     if (fileName.empty())
 340         return false; // cancelled by user
 341
 342     // Files that were not saved correctly are not added to the FileHistory.
 343     if (!OnSaveDocument(fileName))
 344         return false;
 345
 346     SetTitle(wxFileNameFromPath(fileName));
 347     SetFilename(fileName, true);    // will call OnChangeFileName automatically
 348
 349     // A file that doesn't use the default extension of its document template
 350     // cannot be opened via the FileHistory, so we do not add it.
 351     if (docTemplate->FileMatchesTemplate(fileName))
 352     {
 353         GetDocumentManager()->AddFileToHistory(fileName);
 354     }
 355     //else: the user will probably not be able to open the file again, so we
 356     //      could warn about the wrong file-extension here
 357
 358     return true;
 359 }
 360
 361 bool wxDocument::OnSaveDocument(const wxString& file)
 362 {
 363     if ( !file )
 364         return false;
 365
 366     if ( !DoSaveDocument(file) )
 367         return false;
 368
 369     Modify(false);
 370     SetFilename(file);
 371     SetDocumentSaved(true);
 372 #if defined( __WXOSX_MAC__ ) && wxOSX_USE_CARBON
 373     wxFileName fn(file) ;
 374     fn.MacSetDefaultTypeAndCreator() ;
 375 #endif
 376     return true;
 377 }
 378
 379 bool wxDocument::OnOpenDocument(const wxString& file)
 380 {
 381     // notice that there is no need to check the modified flag here for the
 382     // reasons explained in OnNewDocument()
 383
 384     if ( !DoOpenDocument(file) )
 385         return false;
 386
 387     SetFilename(file, true);
 388
 389     // stretching the logic a little this does make sense because the document
 390     // had been saved into the file we just loaded it from, it just could have
 391     // happened during a previous program execution, it's just that the name of
 392     // this method is a bit unfortunate, it should probably have been called
 393     // HasAssociatedFileName()
 394     SetDocumentSaved(true);
 395
 396     UpdateAllViews();
 397
 398     return true;
 399 }
 400
 401 #if wxUSE_STD_IOSTREAM
 402 wxSTD istream& wxDocument::LoadObject(wxSTD istream& stream)
 403 #else
 404 wxInputStream& wxDocument::LoadObject(wxInputStream& stream)
 405 #endif
 406 {
 407     return stream;
 408 }
 409
 410 #if wxUSE_STD_IOSTREAM
 411 wxSTD ostream& wxDocument::SaveObject(wxSTD ostream& stream)
 412 #else
 413 wxOutputStream& wxDocument::SaveObject(wxOutputStream& stream)
 414 #endif
 415 {
 416     return stream;
 417 }
 418
 419 bool wxDocument::Revert()
 420 {
 421     if ( wxMessageBox
 422          (
 423             _("Discard changes and reload the last saved version?"),
 424             wxTheApp->GetAppDisplayName(),
 425             wxYES_NO | wxCANCEL | wxICON_QUESTION,
 426             GetDocumentWindow()
 427           ) != wxYES )
 428         return false;
 429
 430     if ( !DoOpenDocument(GetFilename()) )
 431         return false;
 432
 433     Modify(false);
 434     UpdateAllViews();
 435
 436     return true;
 437 }
 438
 439
 440 // Get title, or filename if no title, else unnamed
 441 #if WXWIN_COMPATIBILITY_2_8
 442 bool wxDocument::GetPrintableName(wxString& buf) const
 443 {
 444     // this function can not only be overridden by the user code but also
 445     // called by it so we need to ensure that we return the same thing as
 446     // GetUserReadableName() but we can't call it because this would result in
 447     // an infinite recursion, hence we use the helper DoGetUserReadableName()
 448     buf = DoGetUserReadableName();
 449
 450     return true;
 451 }
 452 #endif // WXWIN_COMPATIBILITY_2_8
 453
 454 wxString wxDocument::GetUserReadableName() const
 455 {
 456 #if WXWIN_COMPATIBILITY_2_8
 457     // we need to call the old virtual function to ensure that the overridden
 458     // version of it is still called
 459     wxString name;
 460     if ( GetPrintableName(name) )
 461         return name;
 462 #endif // WXWIN_COMPATIBILITY_2_8
 463
 464     return DoGetUserReadableName();
 465 }
 466
 467 wxString wxDocument::DoGetUserReadableName() const
 468 {
 469     if ( !m_documentTitle.empty() )
 470         return m_documentTitle;
 471
 472     if ( !m_documentFile.empty() )
 473         return wxFileNameFromPath(m_documentFile);
 474
 475     return _("unnamed");
 476 }
 477
 478 wxWindow *wxDocument::GetDocumentWindow() const
 479 {
 480     wxView * const view = GetFirstView();
 481
 482     return view ? view->GetFrame() : wxTheApp->GetTopWindow();
 483 }
 484
 485 wxCommandProcessor *wxDocument::OnCreateCommandProcessor()
 486 {
 487     return new wxCommandProcessor;
 488 }
 489
 490 // true if safe to close
 491 bool wxDocument::OnSaveModified()
 492 {
 493     if ( IsModified() )
 494     {
 495         switch ( wxMessageBox
 496                  (
 497                     wxString::Format
 498                     (
 499                      _("Do you want to save changes to %s?"),
 500                      GetUserReadableName()
 501                     ),
 502                     wxTheApp->GetAppDisplayName(),
 503                     wxYES_NO | wxCANCEL | wxICON_QUESTION | wxCENTRE
 504                  ) )
 505         {
 506             case wxNO:
 507                 Modify(false);
 508                 break;
 509
 510             case wxYES:
 511                 return Save();
 512
 513             case wxCANCEL:
 514                 return false;
 515         }
 516     }
 517
 518     return true;
 519 }
 520
 521 bool wxDocument::Draw(wxDC& WXUNUSED(context))
 522 {
 523     return true;
 524 }
 525
 526 bool wxDocument::AddView(wxView *view)
 527 {
 528     if ( !m_documentViews.Member(view) )
 529     {
 530         m_documentViews.Append(view);
 531         OnChangedViewList();
 532     }
 533     return true;
 534 }
 535
 536 bool wxDocument::RemoveView(wxView *view)
 537 {
 538     (void)m_documentViews.DeleteObject(view);
 539     OnChangedViewList();
 540     return true;
 541 }
 542
 543 bool wxDocument::OnCreate(const wxString& WXUNUSED(path), long flags)
 544 {
 545     return GetDocumentTemplate()->CreateView(this, flags) != NULL;
 546 }
 547
 548 // Called after a view is added or removed.
 549 // The default implementation deletes the document if
 550 // there are no more views.
 551 void wxDocument::OnChangedViewList()
 552 {
 553     if ( m_documentViews.empty() && OnSaveModified() )
 554         delete this;
 555 }
 556
 557 void wxDocument::UpdateAllViews(wxView *sender, wxObject *hint)
 558 {
 559     wxList::compatibility_iterator node = m_documentViews.GetFirst();
 560     while (node)
 561     {
 562         wxView *view = (wxView *)node->GetData();
 563         if (view != sender)
 564             view->OnUpdate(sender, hint);
 565         node = node->GetNext();
 566     }
 567 }
 568
 569 void wxDocument::NotifyClosing()
 570 {
 571     wxList::compatibility_iterator node = m_documentViews.GetFirst();
 572     while (node)
 573     {
 574         wxView *view = (wxView *)node->GetData();
 575         view->OnClosingDocument();
 576         node = node->GetNext();
 577     }
 578 }
 579
 580 void wxDocument::SetFilename(const wxString& filename, bool notifyViews)
 581 {
 582     m_documentFile = filename;
 583     OnChangeFilename(notifyViews);
 584 }
 585
 586 void wxDocument::OnChangeFilename(bool notifyViews)
 587 {
 588     if ( notifyViews )
 589     {
 590         // Notify the views that the filename has changed
 591         wxList::compatibility_iterator node = m_documentViews.GetFirst();
 592         while (node)
 593         {
 594             wxView *view = (wxView *)node->GetData();
 595             view->OnChangeFilename();
 596             node = node->GetNext();
 597         }
 598     }
 599 }
 600
 601 bool wxDocument::DoSaveDocument(const wxString& file)
 602 {
 603 #if wxUSE_STD_IOSTREAM
 604     wxSTD ofstream store(file.mb_str(), wxSTD ios::binary);
 605     if ( !store )
 606 #else
 607     wxFileOutputStream store(file);
 608     if ( store.GetLastError() != wxSTREAM_NO_ERROR )
 609 #endif
 610     {
 611         wxLogError(_("File \"%s\" could not be opened for writing."), file);
 612         return false;
 613     }
 614
 615     if (!SaveObject(store))
 616     {
 617         wxLogError(_("Failed to save document to the file \"%s\"."), file);
 618         return false;
 619     }
 620
 621     return true;
 622 }
 623
 624 bool wxDocument::DoOpenDocument(const wxString& file)
 625 {
 626 #if wxUSE_STD_IOSTREAM
 627     wxSTD ifstream store(file.mb_str(), wxSTD ios::binary);
 628     if ( !store )
 629 #else
 630     wxFileInputStream store(file);
 631     if (store.GetLastError() != wxSTREAM_NO_ERROR || !store.IsOk())
 632 #endif
 633     {
 634         wxLogError(_("File \"%s\" could not be opened for reading."), file);
 635         return false;
 636     }
 637
 638 #if wxUSE_STD_IOSTREAM
 639     LoadObject(store);
 640     if ( !store )
 641 #else
 642     int res = LoadObject(store).GetLastError();
 643     if ( res != wxSTREAM_NO_ERROR && res != wxSTREAM_EOF )
 644 #endif
 645     {
 646         wxLogError(_("Failed to read document from the file \"%s\"."), file);
 647         return false;
 648     }
 649
 650     return true;
 651 }
 652
 653
 654 // ----------------------------------------------------------------------------
 655 // Document view
 656 // ----------------------------------------------------------------------------
 657
 658 wxView::wxView()
 659 {
 660     m_viewDocument = NULL;
 661
 662     m_viewFrame = NULL;
 663
 664     m_docChildFrame = NULL;
 665 }
 666
 667 wxView::~wxView()
 668 {
 669     if (m_viewDocument && GetDocumentManager())
 670         GetDocumentManager()->ActivateView(this, false);
 671
 672     // reset our frame view first, before removing it from the document as
 673     // SetView(NULL) is a simple call while RemoveView() may result in user
 674     // code being executed and this user code can, for example, show a message
 675     // box which would result in an activation event for m_docChildFrame and so
 676     // could reactivate the view being destroyed -- unless we reset it first
 677     if ( m_docChildFrame && m_docChildFrame->GetView() == this )
 678     {
 679         // prevent it from doing anything with us
 680         m_docChildFrame->SetView(NULL);
 681
 682         // it doesn't make sense to leave the frame alive if its associated
 683         // view doesn't exist any more so unconditionally close it as well
 684         //
 685         // notice that we only get here if m_docChildFrame is non-NULL in the
 686         // first place and it will be always NULL if we're deleted because our
 687         // frame was closed, so this only catches the case of directly deleting
 688         // the view, as it happens if its creation fails in wxDocTemplate::
 689         // CreateView() for example
 690         m_docChildFrame->GetWindow()->Destroy();
 691     }
 692
 693     if ( m_viewDocument )
 694         m_viewDocument->RemoveView(this);
 695 }
 696
 697 void wxView::SetDocChildFrame(wxDocChildFrameAnyBase *docChildFrame)
 698 {
 699     SetFrame(docChildFrame ? docChildFrame->GetWindow() : NULL);
 700     m_docChildFrame = docChildFrame;
 701 }
 702
 703 bool wxView::TryBefore(wxEvent& event)
 704 {
 705     wxDocument * const doc = GetDocument();
 706     return doc && doc->ProcessEventHere(event);
 707 }
 708
 709 void wxView::OnActivateView(bool WXUNUSED(activate),
 710                             wxView *WXUNUSED(activeView),
 711                             wxView *WXUNUSED(deactiveView))
 712 {
 713 }
 714
 715 void wxView::OnPrint(wxDC *dc, wxObject *WXUNUSED(info))
 716 {
 717     OnDraw(dc);
 718 }
 719
 720 void wxView::OnUpdate(wxView *WXUNUSED(sender), wxObject *WXUNUSED(hint))
 721 {
 722 }
 723
 724 void wxView::OnChangeFilename()
 725 {
 726     // GetFrame can return wxWindow rather than wxTopLevelWindow due to
 727     // generic MDI implementation so use SetLabel rather than SetTitle.
 728     // It should cause SetTitle() for top level windows.
 729     wxWindow *win = GetFrame();
 730     if (!win) return;
 731
 732     wxDocument *doc = GetDocument();
 733     if (!doc) return;
 734
 735     wxString label = doc->GetUserReadableName();
 736     if (doc->IsModified())
 737     {
 738        label += "*";
 739     }
 740     win->SetLabel(label);
 741 }
 742
 743 void wxView::SetDocument(wxDocument *doc)
 744 {
 745     m_viewDocument = doc;
 746     if (doc)
 747         doc->AddView(this);
 748 }
 749
 750 bool wxView::Close(bool deleteWindow)
 751 {
 752     return OnClose(deleteWindow);
 753 }
 754
 755 void wxView::Activate(bool activate)
 756 {
 757     if (GetDocument() && GetDocumentManager())
 758     {
 759         OnActivateView(activate, this, GetDocumentManager()->GetCurrentView());
 760         GetDocumentManager()->ActivateView(this, activate);
 761     }
 762 }
 763
 764 bool wxView::OnClose(bool WXUNUSED(deleteWindow))
 765 {
 766     return GetDocument() ? GetDocument()->Close() : true;
 767 }
 768
 769 #if wxUSE_PRINTING_ARCHITECTURE
 770 wxPrintout *wxView::OnCreatePrintout()
 771 {
 772     return new wxDocPrintout(this);
 773 }
 774 #endif // wxUSE_PRINTING_ARCHITECTURE
 775
 776 // ----------------------------------------------------------------------------
 777 // wxDocTemplate
 778 // ----------------------------------------------------------------------------
 779
 780 wxDocTemplate::wxDocTemplate(wxDocManager *manager,
 781                              const wxString& descr,
 782                              const wxString& filter,
 783                              const wxString& dir,
 784                              const wxString& ext,
 785                              const wxString& docTypeName,
 786                              const wxString& viewTypeName,
 787                              wxClassInfo *docClassInfo,
 788                              wxClassInfo *viewClassInfo,
 789                              long flags)
 790 {
 791     m_documentManager = manager;
 792     m_description = descr;
 793     m_directory = dir;
 794     m_defaultExt = ext;
 795     m_fileFilter = filter;
 796     m_flags = flags;
 797     m_docTypeName = docTypeName;
 798     m_viewTypeName = viewTypeName;
 799     m_documentManager->AssociateTemplate(this);
 800
 801     m_docClassInfo = docClassInfo;
 802     m_viewClassInfo = viewClassInfo;
 803 }
 804
 805 wxDocTemplate::~wxDocTemplate()
 806 {
 807     m_documentManager->DisassociateTemplate(this);
 808 }
 809
 810 // Tries to dynamically construct an object of the right class.
 811 wxDocument *wxDocTemplate::CreateDocument(const wxString& path, long flags)
 812 {
 813     // InitDocument() is supposed to delete the document object if its
 814     // initialization fails so don't use wxScopedPtr<> here: this is fragile
 815     // but unavoidable because the default implementation uses CreateView()
 816     // which may -- or not -- create a wxView and if it does create it and its
 817     // initialization fails then the view destructor will delete the document
 818     // (via RemoveView()) and as we can't distinguish between the two cases we
 819     // just have to assume that it always deletes it in case of failure
 820     wxDocument * const doc = DoCreateDocument();
 821
 822     return doc && InitDocument(doc, path, flags) ? doc : NULL;
 823 }
 824
 825 bool
 826 wxDocTemplate::InitDocument(wxDocument* doc, const wxString& path, long flags)
 827 {
 828     doc->SetFilename(path);
 829     doc->SetDocumentTemplate(this);
 830     GetDocumentManager()->AddDocument(doc);
 831     doc->SetCommandProcessor(doc->OnCreateCommandProcessor());
 832
 833     if (doc->OnCreate(path, flags))
 834         return true;
 835
 836     if (GetDocumentManager()->GetDocuments().Member(doc))
 837         doc->DeleteAllViews();
 838     return false;
 839 }
 840
 841 wxView *wxDocTemplate::CreateView(wxDocument *doc, long flags)
 842 {
 843     wxScopedPtr<wxView> view(DoCreateView());
 844     if ( !view )
 845         return NULL;
 846
 847     view->SetDocument(doc);
 848     if ( !view->OnCreate(doc, flags) )
 849         return NULL;
 850
 851     return view.release();
 852 }
 853
 854 // The default (very primitive) format detection: check is the extension is
 855 // that of the template
 856 bool wxDocTemplate::FileMatchesTemplate(const wxString& path)
 857 {
 858     wxStringTokenizer parser (GetFileFilter(), wxT(";"));
 859     wxString anything = wxT ("*");
 860     while (parser.HasMoreTokens())
 861     {
 862         wxString filter = parser.GetNextToken();
 863         wxString filterExt = FindExtension (filter);
 864         if ( filter.IsSameAs (anything)    ||
 865              filterExt.IsSameAs (anything) ||
 866              filterExt.IsSameAs (FindExtension (path)) )
 867             return true;
 868     }
 869     return GetDefaultExtension().IsSameAs(FindExtension(path));
 870 }
 871
 872 wxDocument *wxDocTemplate::DoCreateDocument()
 873 {
 874     if (!m_docClassInfo)
 875         return NULL;
 876
 877     return static_cast<wxDocument *>(m_docClassInfo->CreateObject());
 878 }
 879
 880 wxView *wxDocTemplate::DoCreateView()
 881 {
 882     if (!m_viewClassInfo)
 883         return NULL;
 884
 885     return static_cast<wxView *>(m_viewClassInfo->CreateObject());
 886 }
 887
 888 // ----------------------------------------------------------------------------
 889 // wxDocManager
 890 // ----------------------------------------------------------------------------
 891
 892 BEGIN_EVENT_TABLE(wxDocManager, wxEvtHandler)
 893     EVT_MENU(wxID_OPEN, wxDocManager::OnFileOpen)
 894     EVT_MENU(wxID_CLOSE, wxDocManager::OnFileClose)
 895     EVT_MENU(wxID_CLOSE_ALL, wxDocManager::OnFileCloseAll)
 896     EVT_MENU(wxID_REVERT, wxDocManager::OnFileRevert)
 897     EVT_MENU(wxID_NEW, wxDocManager::OnFileNew)
 898     EVT_MENU(wxID_SAVE, wxDocManager::OnFileSave)
 899     EVT_MENU(wxID_SAVEAS, wxDocManager::OnFileSaveAs)
 900     EVT_MENU(wxID_UNDO, wxDocManager::OnUndo)
 901     EVT_MENU(wxID_REDO, wxDocManager::OnRedo)
 902
 903     EVT_UPDATE_UI(wxID_OPEN, wxDocManager::OnUpdateFileOpen)
 904     EVT_UPDATE_UI(wxID_CLOSE, wxDocManager::OnUpdateDisableIfNoDoc)
 905     EVT_UPDATE_UI(wxID_CLOSE_ALL, wxDocManager::OnUpdateDisableIfNoDoc)
 906     EVT_UPDATE_UI(wxID_REVERT, wxDocManager::OnUpdateFileRevert)
 907     EVT_UPDATE_UI(wxID_NEW, wxDocManager::OnUpdateFileNew)
 908     EVT_UPDATE_UI(wxID_SAVE, wxDocManager::OnUpdateFileSave)
 909     EVT_UPDATE_UI(wxID_SAVEAS, wxDocManager::OnUpdateDisableIfNoDoc)
 910     EVT_UPDATE_UI(wxID_UNDO, wxDocManager::OnUpdateUndo)
 911     EVT_UPDATE_UI(wxID_REDO, wxDocManager::OnUpdateRedo)
 912
 913 #if wxUSE_PRINTING_ARCHITECTURE
 914     EVT_MENU(wxID_PRINT, wxDocManager::OnPrint)
 915     EVT_MENU(wxID_PREVIEW, wxDocManager::OnPreview)
 916
 917     EVT_UPDATE_UI(wxID_PRINT, wxDocManager::OnUpdateDisableIfNoDoc)
 918     EVT_UPDATE_UI(wxID_PREVIEW, wxDocManager::OnUpdateDisableIfNoDoc)
 919 #endif
 920 END_EVENT_TABLE()
 921
 922 wxDocManager* wxDocManager::sm_docManager = NULL;
 923
 924 wxDocManager::wxDocManager(long WXUNUSED(flags), bool initialize)
 925 {
 926     sm_docManager = this;
 927
 928     m_defaultDocumentNameCounter = 1;
 929     m_currentView = NULL;
 930     m_maxDocsOpen = INT_MAX;
 931     m_fileHistory = NULL;
 932     if ( initialize )
 933         Initialize();
 934 }
 935
 936 wxDocManager::~wxDocManager()
 937 {
 938     Clear();
 939     delete m_fileHistory;
 940     sm_docManager = NULL;
 941 }
 942
 943 // closes the specified document
 944 bool wxDocManager::CloseDocument(wxDocument* doc, bool force)
 945 {
 946     if ( !doc->Close() && !force )
 947         return false;
 948
 949     // Implicitly deletes the document when
 950     // the last view is deleted
 951     doc->DeleteAllViews();
 952
 953     // Check we're really deleted
 954     if (m_docs.Member(doc))
 955         delete doc;
 956
 957     return true;
 958 }
 959
 960 bool wxDocManager::CloseDocuments(bool force)
 961 {
 962     wxList::compatibility_iterator node = m_docs.GetFirst();
 963     while (node)
 964     {
 965         wxDocument *doc = (wxDocument *)node->GetData();
 966         wxList::compatibility_iterator next = node->GetNext();
 967
 968         if (!CloseDocument(doc, force))
 969             return false;
 970
 971         // This assumes that documents are not connected in
 972         // any way, i.e. deleting one document does NOT
 973         // delete another.
 974         node = next;
 975     }
 976     return true;
 977 }
 978
 979 bool wxDocManager::Clear(bool force)
 980 {
 981     if (!CloseDocuments(force))
 982         return false;
 983
 984     m_currentView = NULL;
 985
 986     wxList::compatibility_iterator node = m_templates.GetFirst();
 987     while (node)
 988     {
 989         wxDocTemplate *templ = (wxDocTemplate*) node->GetData();
 990         wxList::compatibility_iterator next = node->GetNext();
 991         delete templ;
 992         node = next;
 993     }
 994     return true;
 995 }
 996
 997 bool wxDocManager::Initialize()
 998 {
 999     m_fileHistory = OnCreateFileHistory();
1000     return true;
1001 }
1002
1003 wxString wxDocManager::GetLastDirectory() const
1004 {
1005     // if we haven't determined the last used directory yet, do it now
1006     if ( m_lastDirectory.empty() )
1007     {
1008         // we're going to modify m_lastDirectory in this const method, so do it
1009         // via non-const self pointer instead of const this one
1010         wxDocManager * const self = const_cast<wxDocManager *>(this);
1011
1012         // first try to reuse the directory of the most recently opened file:
1013         // this ensures that if the user opens a file, closes the program and
1014         // runs it again the "Open file" dialog will open in the directory of
1015         // the last file he used
1016         if ( m_fileHistory && m_fileHistory->GetCount() )
1017         {
1018             const wxString lastOpened = m_fileHistory->GetHistoryFile(0);
1019             const wxFileName fn(lastOpened);
1020             if ( fn.DirExists() )
1021             {
1022                 self->m_lastDirectory = fn.GetPath();
1023             }
1024             //else: should we try the next one?
1025         }
1026         //else: no history yet
1027
1028         // if we don't have any files in the history (yet?), use the
1029         // system-dependent default location for the document files
1030         if ( m_lastDirectory.empty() )
1031         {
1032             self->m_lastDirectory = wxStandardPaths::Get().GetAppDocumentsDir();
1033         }
1034     }
1035
1036     return m_lastDirectory;
1037 }
1038
1039 wxFileHistory *wxDocManager::OnCreateFileHistory()
1040 {
1041     return new wxFileHistory;
1042 }
1043
1044 void wxDocManager::OnFileClose(wxCommandEvent& WXUNUSED(event))
1045 {
1046     wxDocument *doc = GetCurrentDocument();
1047     if (!doc)
1048         return;
1049     if (doc->Close())
1050     {
1051         doc->DeleteAllViews();
1052         if (m_docs.Member(doc))
1053             delete doc;
1054     }
1055 }
1056
1057 void wxDocManager::OnFileCloseAll(wxCommandEvent& WXUNUSED(event))
1058 {
1059     CloseDocuments(false);
1060 }
1061
1062 void wxDocManager::OnFileNew(wxCommandEvent& WXUNUSED(event))
1063 {
1064     CreateNewDocument();
1065 }
1066
1067 void wxDocManager::OnFileOpen(wxCommandEvent& WXUNUSED(event))
1068 {
1069     if ( !CreateDocument("") )
1070     {
1071         OnOpenFileFailure();
1072     }
1073 }
1074
1075 void wxDocManager::OnFileRevert(wxCommandEvent& WXUNUSED(event))
1076 {
1077     wxDocument *doc = GetCurrentDocument();
1078     if (!doc)
1079         return;
1080     doc->Revert();
1081 }
1082
1083 void wxDocManager::OnFileSave(wxCommandEvent& WXUNUSED(event))
1084 {
1085     wxDocument *doc = GetCurrentDocument();
1086     if (!doc)
1087         return;
1088     doc->Save();
1089 }
1090
1091 void wxDocManager::OnFileSaveAs(wxCommandEvent& WXUNUSED(event))
1092 {
1093     wxDocument *doc = GetCurrentDocument();
1094     if (!doc)
1095         return;
1096     doc->SaveAs();
1097 }
1098
1099 void wxDocManager::OnPrint(wxCommandEvent& WXUNUSED(event))
1100 {
1101 #if wxUSE_PRINTING_ARCHITECTURE
1102     wxView *view = GetActiveView();
1103     if (!view)
1104         return;
1105
1106     wxPrintout *printout = view->OnCreatePrintout();
1107     if (printout)
1108     {
1109         wxPrinter printer;
1110         printer.Print(view->GetFrame(), printout, true);
1111
1112         delete printout;
1113     }
1114 #endif // wxUSE_PRINTING_ARCHITECTURE
1115 }
1116
1117 void wxDocManager::OnPreview(wxCommandEvent& WXUNUSED(event))
1118 {
1119 #if wxUSE_PRINTING_ARCHITECTURE
1120     wxBusyCursor busy;
1121     wxView *view = GetActiveView();
1122     if (!view)
1123         return;
1124
1125     wxPrintout *printout = view->OnCreatePrintout();
1126     if (printout)
1127     {
1128         // Pass two printout objects: for preview, and possible printing.
1129         wxPrintPreviewBase *
1130             preview = new wxPrintPreview(printout, view->OnCreatePrintout());
1131         if ( !preview->Ok() )
1132         {
1133             delete preview;
1134             wxLogError(_("Print preview creation failed."));
1135             return;
1136         }
1137
1138         wxPreviewFrame *
1139             frame = new wxPreviewFrame(preview, wxTheApp->GetTopWindow(),
1140                                        _("Print Preview"));
1141         frame->Centre(wxBOTH);
1142         frame->Initialize();
1143         frame->Show(true);
1144     }
1145 #endif // wxUSE_PRINTING_ARCHITECTURE
1146 }
1147
1148 void wxDocManager::OnUndo(wxCommandEvent& event)
1149 {
1150     wxCommandProcessor * const cmdproc = GetCurrentCommandProcessor();
1151     if ( !cmdproc )
1152     {
1153         event.Skip();
1154         return;
1155     }
1156
1157     cmdproc->Undo();
1158 }
1159
1160 void wxDocManager::OnRedo(wxCommandEvent& event)
1161 {
1162     wxCommandProcessor * const cmdproc = GetCurrentCommandProcessor();
1163     if ( !cmdproc )
1164     {
1165         event.Skip();
1166         return;
1167     }
1168
1169     cmdproc->Redo();
1170 }
1171
1172 // Handlers for UI update commands
1173
1174 void wxDocManager::OnUpdateFileOpen(wxUpdateUIEvent& event)
1175 {
1176     // CreateDocument() (which is called from OnFileOpen) may succeed
1177     // only when there is at least a template:
1178     event.Enable( GetTemplates().GetCount()>0 );
1179 }
1180
1181 void wxDocManager::OnUpdateDisableIfNoDoc(wxUpdateUIEvent& event)
1182 {
1183     event.Enable( GetCurrentDocument() != NULL );
1184 }
1185
1186 void wxDocManager::OnUpdateFileRevert(wxUpdateUIEvent& event)
1187 {
1188     wxDocument* doc = GetCurrentDocument();
1189     event.Enable(doc && doc->IsModified() && doc->GetDocumentSaved());
1190 }
1191
1192 void wxDocManager::OnUpdateFileNew(wxUpdateUIEvent& event)
1193 {
1194     // CreateDocument() (which is called from OnFileNew) may succeed
1195     // only when there is at least a template:
1196     event.Enable( GetTemplates().GetCount()>0 );
1197 }
1198
1199 void wxDocManager::OnUpdateFileSave(wxUpdateUIEvent& event)
1200 {
1201     wxDocument * const doc = GetCurrentDocument();
1202     event.Enable( doc && !doc->AlreadySaved() );
1203 }
1204
1205 void wxDocManager::OnUpdateUndo(wxUpdateUIEvent& event)
1206 {
1207     wxCommandProcessor * const cmdproc = GetCurrentCommandProcessor();
1208     if ( !cmdproc )
1209     {
1210         event.Enable(false);
1211         return;
1212     }
1213
1214     event.Enable(cmdproc->CanUndo());
1215     cmdproc->SetMenuStrings();
1216 }
1217
1218 void wxDocManager::OnUpdateRedo(wxUpdateUIEvent& event)
1219 {
1220     wxCommandProcessor * const cmdproc = GetCurrentCommandProcessor();
1221     if ( !cmdproc )
1222     {
1223         event.Enable(false);
1224         return;
1225     }
1226
1227     event.Enable(cmdproc->CanRedo());
1228     cmdproc->SetMenuStrings();
1229 }
1230
1231 wxView *wxDocManager::GetActiveView() const
1232 {
1233     wxView *view = GetCurrentView();
1234
1235     if ( !view && !m_docs.empty() )
1236     {
1237         // if we have exactly one document, consider its view to be the current
1238         // one
1239         //
1240         // VZ: I'm not exactly sure why is this needed but this is how this
1241         //     code used to behave before the bug #9518 was fixed and it seems
1242         //     safer to preserve the old logic
1243         wxList::compatibility_iterator node = m_docs.GetFirst();
1244         if ( !node->GetNext() )
1245         {
1246             wxDocument *doc = static_cast<wxDocument *>(node->GetData());
1247             view = doc->GetFirstView();
1248         }
1249         //else: we have more than one document
1250     }
1251
1252     return view;
1253 }
1254
1255 bool wxDocManager::TryBefore(wxEvent& event)
1256 {
1257     wxView * const view = GetActiveView();
1258     return view && view->ProcessEventHere(event);
1259 }
1260
1261 namespace
1262 {
1263
1264 // helper function: return only the visible templates
1265 wxDocTemplates GetVisibleTemplates(const wxList& allTemplates)
1266 {
1267     // select only the visible templates
1268     const size_t totalNumTemplates = allTemplates.GetCount();
1269     wxDocTemplates templates;
1270     if ( totalNumTemplates )
1271     {
1272         templates.reserve(totalNumTemplates);
1273
1274         for ( wxList::const_iterator i = allTemplates.begin(),
1275                                    end = allTemplates.end();
1276               i != end;
1277               ++i )
1278         {
1279             wxDocTemplate * const temp = (wxDocTemplate *)*i;
1280             if ( temp->IsVisible() )
1281                 templates.push_back(temp);
1282         }
1283     }
1284
1285     return templates;
1286 }
1287
1288 } // anonymous namespace
1289
1290 wxDocument *wxDocManager::CreateDocument(const wxString& pathOrig, long flags)
1291 {
1292     // this ought to be const but SelectDocumentType/Path() are not
1293     // const-correct and can't be changed as, being virtual, this risks
1294     // breaking user code overriding them
1295     wxDocTemplates templates(GetVisibleTemplates(m_templates));
1296     const size_t numTemplates = templates.size();
1297     if ( !numTemplates )
1298     {
1299         // no templates can be used, can't create document
1300         return NULL;
1301     }
1302
1303
1304     // normally user should select the template to use but wxDOC_SILENT flag we
1305     // choose one ourselves
1306     wxString path = pathOrig;   // may be modified below
1307     wxDocTemplate *temp;
1308     if ( flags & wxDOC_SILENT )
1309     {
1310         wxASSERT_MSG( !path.empty(),
1311                       "using empty path with wxDOC_SILENT doesn't make sense" );
1312
1313         temp = FindTemplateForPath(path);
1314         if ( !temp )
1315         {
1316             wxLogWarning(_("The format of file '%s' couldn't be determined."),
1317                          path);
1318         }
1319     }
1320     else // not silent, ask the user
1321     {
1322         // for the new file we need just the template, for an existing one we
1323         // need the template and the path, unless it's already specified
1324         if ( (flags & wxDOC_NEW) || !path.empty() )
1325             temp = SelectDocumentType(&templates[0], numTemplates);
1326         else
1327             temp = SelectDocumentPath(&templates[0], numTemplates, path, flags);
1328     }
1329
1330     if ( !temp )
1331         return NULL;
1332
1333     // check whether the document with this path is already opened
1334     if ( !path.empty() )
1335     {
1336         const wxFileName fn(path);
1337         for ( wxList::const_iterator i = m_docs.begin(); i != m_docs.end(); ++i )
1338         {
1339             wxDocument * const doc = (wxDocument*)*i;
1340
1341             if ( fn == doc->GetFilename() )
1342             {
1343                 // file already open, just activate it and return
1344                 if ( doc->GetFirstView() )
1345                 {
1346                     ActivateView(doc->GetFirstView());
1347                     if ( doc->GetDocumentWindow() )
1348                         doc->GetDocumentWindow()->SetFocus();
1349                     return doc;
1350                 }
1351             }
1352         }
1353     }
1354
1355
1356     // no, we need to create a new document
1357
1358
1359     // if we've reached the max number of docs, close the first one.
1360     if ( (int)GetDocuments().GetCount() >= m_maxDocsOpen )
1361     {
1362         if ( !CloseDocument((wxDocument *)GetDocuments().GetFirst()->GetData()) )
1363         {
1364             // can't open the new document if closing the old one failed
1365             return NULL;
1366         }
1367     }
1368
1369
1370     // do create and initialize the new document finally
1371     wxDocument * const docNew = temp->CreateDocument(path, flags);
1372     if ( !docNew )
1373         return NULL;
1374
1375     docNew->SetDocumentName(temp->GetDocumentName());
1376     docNew->SetDocumentTemplate(temp);
1377
1378     wxTRY
1379     {
1380         // call the appropriate function depending on whether we're creating a
1381         // new file or opening an existing one
1382         if ( !(flags & wxDOC_NEW ? docNew->OnNewDocument()
1383                                  : docNew->OnOpenDocument(path)) )
1384         {
1385             docNew->DeleteAllViews();
1386             return NULL;
1387         }
1388     }
1389     wxCATCH_ALL( docNew->DeleteAllViews(); throw; )
1390
1391     // add the successfully opened file to MRU, but only if we're going to be
1392     // able to reopen it successfully later which requires the template for
1393     // this document to be retrievable from the file extension
1394     if ( !(flags & wxDOC_NEW) && temp->FileMatchesTemplate(path) )
1395         AddFileToHistory(path);
1396
1397     return docNew;
1398 }
1399
1400 wxView *wxDocManager::CreateView(wxDocument *doc, long flags)
1401 {
1402     wxDocTemplates templates(GetVisibleTemplates(m_templates));
1403     const size_t numTemplates = templates.size();
1404
1405     if ( numTemplates == 0 )
1406         return NULL;
1407
1408     wxDocTemplate * const
1409     temp = numTemplates == 1 ? templates[0]
1410                              : SelectViewType(&templates[0], numTemplates);
1411
1412     if ( !temp )
1413         return NULL;
1414
1415     wxView *view = temp->CreateView(doc, flags);
1416     if ( view )
1417         view->SetViewName(temp->GetViewName());
1418     return view;
1419 }
1420
1421 // Not yet implemented
1422 void
1423 wxDocManager::DeleteTemplate(wxDocTemplate *WXUNUSED(temp), long WXUNUSED(flags))
1424 {
1425 }
1426
1427 // Not yet implemented
1428 bool wxDocManager::FlushDoc(wxDocument *WXUNUSED(doc))
1429 {
1430     return false;
1431 }
1432
1433 wxDocument *wxDocManager::GetCurrentDocument() const
1434 {
1435     wxView * const view = GetActiveView();
1436     return view ? view->GetDocument() : NULL;
1437 }
1438
1439 wxCommandProcessor *wxDocManager::GetCurrentCommandProcessor() const
1440 {
1441     wxDocument * const doc = GetCurrentDocument();
1442     return doc ? doc->GetCommandProcessor() : NULL;
1443 }
1444
1445 // Make a default name for a new document
1446 #if WXWIN_COMPATIBILITY_2_8
1447 bool wxDocManager::MakeDefaultName(wxString& WXUNUSED(name))
1448 {
1449     // we consider that this function can only be overridden by the user code,
1450     // not called by it as it only makes sense to call it internally, so we
1451     // don't bother to return anything from here
1452     return false;
1453 }
1454 #endif // WXWIN_COMPATIBILITY_2_8
1455
1456 wxString wxDocManager::MakeNewDocumentName()
1457 {
1458     wxString name;
1459
1460 #if WXWIN_COMPATIBILITY_2_8
1461     if ( !MakeDefaultName(name) )
1462 #endif // WXWIN_COMPATIBILITY_2_8
1463     {
1464         name.Printf(_("unnamed%d"), m_defaultDocumentNameCounter);
1465         m_defaultDocumentNameCounter++;
1466     }
1467
1468     return name;
1469 }
1470
1471 // Make a frame title (override this to do something different)
1472 // If docName is empty, a document is not currently active.
1473 wxString wxDocManager::MakeFrameTitle(wxDocument* doc)
1474 {
1475     wxString appName = wxTheApp->GetAppDisplayName();
1476     wxString title;
1477     if (!doc)
1478         title = appName;
1479     else
1480     {
1481         wxString docName = doc->GetUserReadableName();
1482         title = docName + wxString(_(" - ")) + appName;
1483     }
1484     return title;
1485 }
1486
1487
1488 // Not yet implemented
1489 wxDocTemplate *wxDocManager::MatchTemplate(const wxString& WXUNUSED(path))
1490 {
1491     return NULL;
1492 }
1493
1494 // File history management
1495 void wxDocManager::AddFileToHistory(const wxString& file)
1496 {
1497     if (m_fileHistory)
1498         m_fileHistory->AddFileToHistory(file);
1499 }
1500
1501 void wxDocManager::RemoveFileFromHistory(size_t i)
1502 {
1503     if (m_fileHistory)
1504         m_fileHistory->RemoveFileFromHistory(i);
1505 }
1506
1507 wxString wxDocManager::GetHistoryFile(size_t i) const
1508 {
1509     wxString histFile;
1510
1511     if (m_fileHistory)
1512         histFile = m_fileHistory->GetHistoryFile(i);
1513
1514     return histFile;
1515 }
1516
1517 void wxDocManager::FileHistoryUseMenu(wxMenu *menu)
1518 {
1519     if (m_fileHistory)
1520         m_fileHistory->UseMenu(menu);
1521 }
1522
1523 void wxDocManager::FileHistoryRemoveMenu(wxMenu *menu)
1524 {
1525     if (m_fileHistory)
1526         m_fileHistory->RemoveMenu(menu);
1527 }
1528
1529 #if wxUSE_CONFIG
1530 void wxDocManager::FileHistoryLoad(const wxConfigBase& config)
1531 {
1532     if (m_fileHistory)
1533         m_fileHistory->Load(config);
1534 }
1535
1536 void wxDocManager::FileHistorySave(wxConfigBase& config)
1537 {
1538     if (m_fileHistory)
1539         m_fileHistory->Save(config);
1540 }
1541 #endif
1542
1543 void wxDocManager::FileHistoryAddFilesToMenu(wxMenu* menu)
1544 {
1545     if (m_fileHistory)
1546         m_fileHistory->AddFilesToMenu(menu);
1547 }
1548
1549 void wxDocManager::FileHistoryAddFilesToMenu()
1550 {
1551     if (m_fileHistory)
1552         m_fileHistory->AddFilesToMenu();
1553 }
1554
1555 size_t wxDocManager::GetHistoryFilesCount() const
1556 {
1557     return m_fileHistory ? m_fileHistory->GetCount() : 0;
1558 }
1559
1560
1561 // Find out the document template via matching in the document file format
1562 // against that of the template
1563 wxDocTemplate *wxDocManager::FindTemplateForPath(const wxString& path)
1564 {
1565     wxDocTemplate *theTemplate = NULL;
1566
1567     // Find the template which this extension corresponds to
1568     for (size_t i = 0; i < m_templates.GetCount(); i++)
1569     {
1570         wxDocTemplate *temp = (wxDocTemplate *)m_templates.Item(i)->GetData();
1571         if ( temp->FileMatchesTemplate(path) )
1572         {
1573             theTemplate = temp;
1574             break;
1575         }
1576     }
1577     return theTemplate;
1578 }
1579
1580 // Prompts user to open a file, using file specs in templates.
1581 // Must extend the file selector dialog or implement own; OR
1582 // match the extension to the template extension.
1583
1584 wxDocTemplate *wxDocManager::SelectDocumentPath(wxDocTemplate **templates,
1585                                                 int noTemplates,
1586                                                 wxString& path,
1587                                                 long WXUNUSED(flags),
1588                                                 bool WXUNUSED(save))
1589 {
1590 #ifdef wxHAS_MULTIPLE_FILEDLG_FILTERS
1591     wxString descrBuf;
1592
1593     for (int i = 0; i < noTemplates; i++)
1594     {
1595         if (templates[i]->IsVisible())
1596         {
1597             // add a '|' to separate this filter from the previous one
1598             if ( !descrBuf.empty() )
1599                 descrBuf << wxT('|');
1600
1601             descrBuf << templates[i]->GetDescription()
1602                 << wxT(" (") << templates[i]->GetFileFilter() << wxT(") |")
1603                 << templates[i]->GetFileFilter();
1604         }
1605     }
1606 #else
1607     wxString descrBuf = wxT("*.*");
1608     wxUnusedVar(noTemplates);
1609 #endif
1610
1611     int FilterIndex = -1;
1612
1613     wxString pathTmp = wxFileSelectorEx(_("Open File"),
1614                                         GetLastDirectory(),
1615                                         wxEmptyString,
1616                                         &FilterIndex,
1617                                         descrBuf);
1618
1619     wxDocTemplate *theTemplate = NULL;
1620     if (!pathTmp.empty())
1621     {
1622         if (!wxFileExists(pathTmp))
1623         {
1624             wxString msgTitle;
1625             if (!wxTheApp->GetAppDisplayName().empty())
1626                 msgTitle = wxTheApp->GetAppDisplayName();
1627             else
1628                 msgTitle = wxString(_("File error"));
1629
1630             wxMessageBox(_("Sorry, could not open this file."),
1631                          msgTitle,
1632                          wxOK | wxICON_EXCLAMATION | wxCENTRE);
1633
1634             path = wxEmptyString;
1635             return NULL;
1636         }
1637
1638         SetLastDirectory(wxPathOnly(pathTmp));
1639
1640         path = pathTmp;
1641
1642         // first choose the template using the extension, if this fails (i.e.
1643         // wxFileSelectorEx() didn't fill it), then use the path
1644         if ( FilterIndex != -1 )
1645             theTemplate = templates[FilterIndex];
1646         if ( !theTemplate )
1647             theTemplate = FindTemplateForPath(path);
1648         if ( !theTemplate )
1649         {
1650             // Since we do not add files with non-default extensions to the
1651             // file history this can only happen if the application changes the
1652             // allowed templates in runtime.
1653             wxMessageBox(_("Sorry, the format for this file is unknown."),
1654                          _("Open File"),
1655                          wxOK | wxICON_EXCLAMATION | wxCENTRE);
1656         }
1657     }
1658     else
1659     {
1660         path.clear();
1661     }
1662
1663     return theTemplate;
1664 }
1665
1666 wxDocTemplate *wxDocManager::SelectDocumentType(wxDocTemplate **templates,
1667                                                 int noTemplates, bool sort)
1668 {
1669     wxArrayString strings;
1670     wxScopedArray<wxDocTemplate *> data(new wxDocTemplate *[noTemplates]);
1671     int i;
1672     int n = 0;
1673
1674     for (i = 0; i < noTemplates; i++)
1675     {
1676         if (templates[i]->IsVisible())
1677         {
1678             int j;
1679             bool want = true;
1680             for (j = 0; j < n; j++)
1681             {
1682                 //filter out NOT unique documents + view combinations
1683                 if ( templates[i]->m_docTypeName == data[j]->m_docTypeName &&
1684                      templates[i]->m_viewTypeName == data[j]->m_viewTypeName
1685                    )
1686                     want = false;
1687             }
1688
1689             if ( want )
1690             {
1691                 strings.Add(templates[i]->m_description);
1692
1693                 data[n] = templates[i];
1694                 n ++;
1695             }
1696         }
1697     }  // for
1698
1699     if (sort)
1700     {
1701         strings.Sort(); // ascending sort
1702         // Yes, this will be slow, but template lists
1703         // are typically short.
1704         int j;
1705         n = strings.Count();
1706         for (i = 0; i < n; i++)
1707         {
1708             for (j = 0; j < noTemplates; j++)
1709             {
1710                 if (strings[i] == templates[j]->m_description)
1711                     data[i] = templates[j];
1712             }
1713         }
1714     }
1715
1716     wxDocTemplate *theTemplate;
1717
1718     switch ( n )
1719     {
1720         case 0:
1721             // no visible templates, hence nothing to choose from
1722             theTemplate = NULL;
1723             break;
1724
1725         case 1:
1726             // don't propose the user to choose if he has no choice
1727             theTemplate = data[0];
1728             break;
1729
1730         default:
1731             // propose the user to choose one of several
1732             theTemplate = (wxDocTemplate *)wxGetSingleChoiceData
1733                           (
1734                             _("Select a document template"),
1735                             _("Templates"),
1736                             strings,
1737                             (void **)data.get()
1738                           );
1739     }
1740
1741     return theTemplate;
1742 }
1743
1744 wxDocTemplate *wxDocManager::SelectViewType(wxDocTemplate **templates,
1745                                             int noTemplates, bool sort)
1746 {
1747     wxArrayString strings;
1748     wxScopedArray<wxDocTemplate *> data(new wxDocTemplate *[noTemplates]);
1749     int i;
1750     int n = 0;
1751
1752     for (i = 0; i < noTemplates; i++)
1753     {
1754         wxDocTemplate *templ = templates[i];
1755         if ( templ->IsVisible() && !templ->GetViewName().empty() )
1756         {
1757             int j;
1758             bool want = true;
1759             for (j = 0; j < n; j++)
1760             {
1761                 //filter out NOT unique views
1762                 if ( templates[i]->m_viewTypeName == data[j]->m_viewTypeName )
1763                     want = false;
1764             }
1765
1766             if ( want )
1767             {
1768                 strings.Add(templ->m_viewTypeName);
1769                 data[n] = templ;
1770                 n ++;
1771             }
1772         }
1773     }
1774
1775     if (sort)
1776     {
1777         strings.Sort(); // ascending sort
1778         // Yes, this will be slow, but template lists
1779         // are typically short.
1780         int j;
1781         n = strings.Count();
1782         for (i = 0; i < n; i++)
1783         {
1784             for (j = 0; j < noTemplates; j++)
1785             {
1786                 if (strings[i] == templates[j]->m_viewTypeName)
1787                     data[i] = templates[j];
1788             }
1789         }
1790     }
1791
1792     wxDocTemplate *theTemplate;
1793
1794     // the same logic as above
1795     switch ( n )
1796     {
1797         case 0:
1798             theTemplate = NULL;
1799             break;
1800
1801         case 1:
1802             theTemplate = data[0];
1803             break;
1804
1805         default:
1806             theTemplate = (wxDocTemplate *)wxGetSingleChoiceData
1807                           (
1808                             _("Select a document view"),
1809                             _("Views"),
1810                             strings,
1811                             (void **)data.get()
1812                           );
1813
1814     }
1815
1816     return theTemplate;
1817 }
1818
1819 void wxDocManager::AssociateTemplate(wxDocTemplate *temp)
1820 {
1821     if (!m_templates.Member(temp))
1822         m_templates.Append(temp);
1823 }
1824
1825 void wxDocManager::DisassociateTemplate(wxDocTemplate *temp)
1826 {
1827     m_templates.DeleteObject(temp);
1828 }
1829
1830 // Add and remove a document from the manager's list
1831 void wxDocManager::AddDocument(wxDocument *doc)
1832 {
1833     if (!m_docs.Member(doc))
1834         m_docs.Append(doc);
1835 }
1836
1837 void wxDocManager::RemoveDocument(wxDocument *doc)
1838 {
1839     m_docs.DeleteObject(doc);
1840 }
1841
1842 // Views or windows should inform the document manager
1843 // when a view is going in or out of focus
1844 void wxDocManager::ActivateView(wxView *view, bool activate)
1845 {
1846     if ( activate )
1847     {
1848         m_currentView = view;
1849     }
1850     else // deactivate
1851     {
1852         if ( m_currentView == view )
1853         {
1854             // don't keep stale pointer
1855             m_currentView = NULL;
1856         }
1857     }
1858 }
1859
1860 // ----------------------------------------------------------------------------
1861 // wxDocChildFrameAnyBase
1862 // ----------------------------------------------------------------------------
1863
1864 bool wxDocChildFrameAnyBase::CloseView(wxCloseEvent& event)
1865 {
1866     if ( m_childView )
1867     {
1868         // notice that we must call wxView::Close() and OnClose() called from
1869         // it in any case, even if we know that we are going to close anyhow
1870         if ( !m_childView->Close(false) && event.CanVeto() )
1871         {
1872             event.Veto();
1873             return false;
1874         }
1875
1876         m_childView->Activate(false);
1877
1878         // it is important to reset m_childView frame pointer to NULL before
1879         // deleting it because while normally it is the frame which deletes the
1880         // view when it's closed, the view also closes the frame if it is
1881         // deleted directly not by us as indicated by its doc child frame
1882         // pointer still being set
1883         m_childView->SetDocChildFrame(NULL);
1884         delete m_childView;
1885         m_childView = NULL;
1886     }
1887
1888     m_childDocument = NULL;
1889
1890     return true;
1891 }
1892
1893 // ----------------------------------------------------------------------------
1894 // Default parent frame
1895 // ----------------------------------------------------------------------------
1896
1897 BEGIN_EVENT_TABLE(wxDocParentFrame, wxFrame)
1898     EVT_MENU(wxID_EXIT, wxDocParentFrame::OnExit)
1899     EVT_MENU_RANGE(wxID_FILE1, wxID_FILE9, wxDocParentFrame::OnMRUFile)
1900     EVT_CLOSE(wxDocParentFrame::OnCloseWindow)
1901 END_EVENT_TABLE()
1902
1903 wxDocParentFrame::wxDocParentFrame()
1904 {
1905     m_docManager = NULL;
1906 }
1907
1908 wxDocParentFrame::wxDocParentFrame(wxDocManager *manager,
1909                                    wxFrame *frame,
1910                                    wxWindowID id,
1911                                    const wxString& title,
1912                                    const wxPoint& pos,
1913                                    const wxSize& size,
1914                                    long style,
1915                                    const wxString& name)
1916                 : wxFrame(frame, id, title, pos, size, style, name)
1917 {
1918     m_docManager = manager;
1919 }
1920
1921 bool wxDocParentFrame::Create(wxDocManager *manager,
1922                               wxFrame *frame,
1923                               wxWindowID id,
1924                               const wxString& title,
1925                               const wxPoint& pos,
1926                               const wxSize& size,
1927                               long style,
1928                               const wxString& name)
1929 {
1930     m_docManager = manager;
1931     return base_type::Create(frame, id, title, pos, size, style, name);
1932 }
1933
1934 void wxDocParentFrame::OnExit(wxCommandEvent& WXUNUSED(event))
1935 {
1936     Close();
1937 }
1938
1939 void wxDocParentFrame::OnMRUFile(wxCommandEvent& event)
1940 {
1941     int n = event.GetId() - wxID_FILE1;  // the index in MRU list
1942     wxString filename(m_docManager->GetHistoryFile(n));
1943     if ( filename.empty() )
1944         return;
1945
1946     wxString errMsg; // must contain exactly one "%s" if non-empty
1947     if ( wxFile::Exists(filename) )
1948     {
1949         // try to open it
1950         if ( m_docManager->CreateDocument(filename, wxDOC_SILENT) )
1951             return;
1952
1953         errMsg = _("The file '%s' couldn't be opened.");
1954     }
1955     else // file doesn't exist
1956     {
1957         errMsg = _("The file '%s' doesn't exist and couldn't be opened.");
1958     }
1959
1960
1961     wxASSERT_MSG( !errMsg.empty(), "should have an error message" );
1962
1963     // remove the file which we can't open from the MRU list
1964     m_docManager->RemoveFileFromHistory(n);
1965
1966     // and tell the user about it
1967     wxLogError(errMsg + '\n' +
1968                _("It has been removed from the most recently used files list."),
1969                filename);
1970 }
1971
1972 // Extend event processing to search the view's event table
1973 bool wxDocParentFrame::TryBefore(wxEvent& event)
1974 {
1975     if ( m_docManager && m_docManager->ProcessEventHere(event) )
1976         return true;
1977
1978     return wxFrame::TryBefore(event);
1979 }
1980
1981 // Define the behaviour for the frame closing
1982 // - must delete all frames except for the main one.
1983 void wxDocParentFrame::OnCloseWindow(wxCloseEvent& event)
1984 {
1985     if (m_docManager->Clear(!event.CanVeto()))
1986     {
1987         Destroy();
1988     }
1989     else
1990         event.Veto();
1991 }
1992
1993 #if wxUSE_PRINTING_ARCHITECTURE
1994
1995 wxDocPrintout::wxDocPrintout(wxView *view, const wxString& title)
1996              : wxPrintout(title)
1997 {
1998     m_printoutView = view;
1999 }
2000
2001 bool wxDocPrintout::OnPrintPage(int WXUNUSED(page))
2002 {
2003     wxDC *dc = GetDC();
2004
2005     // Get the logical pixels per inch of screen and printer
2006     int ppiScreenX, ppiScreenY;
2007     GetPPIScreen(&ppiScreenX, &ppiScreenY);
2008     wxUnusedVar(ppiScreenY);
2009     int ppiPrinterX, ppiPrinterY;
2010     GetPPIPrinter(&ppiPrinterX, &ppiPrinterY);
2011     wxUnusedVar(ppiPrinterY);
2012
2013     // This scales the DC so that the printout roughly represents the
2014     // the screen scaling. The text point size _should_ be the right size
2015     // but in fact is too small for some reason. This is a detail that will
2016     // need to be addressed at some point but can be fudged for the
2017     // moment.
2018     float scale = (float)((float)ppiPrinterX/(float)ppiScreenX);
2019
2020     // Now we have to check in case our real page size is reduced
2021     // (e.g. because we're drawing to a print preview memory DC)
2022     int pageWidth, pageHeight;
2023     int w, h;
2024     dc->GetSize(&w, &h);
2025     GetPageSizePixels(&pageWidth, &pageHeight);
2026     wxUnusedVar(pageHeight);
2027
2028     // If printer pageWidth == current DC width, then this doesn't
2029     // change. But w might be the preview bitmap width, so scale down.
2030     float overallScale = scale * (float)(w/(float)pageWidth);
2031     dc->SetUserScale(overallScale, overallScale);
2032
2033     if (m_printoutView)
2034     {
2035         m_printoutView->OnDraw(dc);
2036     }
2037     return true;
2038 }
2039
2040 bool wxDocPrintout::HasPage(int pageNum)
2041 {
2042     return (pageNum == 1);
2043 }
2044
2045 bool wxDocPrintout::OnBeginDocument(int startPage, int endPage)
2046 {
2047     if (!wxPrintout::OnBeginDocument(startPage, endPage))
2048         return false;
2049
2050     return true;
2051 }
2052
2053 void wxDocPrintout::GetPageInfo(int *minPage, int *maxPage,
2054                                 int *selPageFrom, int *selPageTo)
2055 {
2056     *minPage = 1;
2057     *maxPage = 1;
2058     *selPageFrom = 1;
2059     *selPageTo = 1;
2060 }
2061
2062 #endif // wxUSE_PRINTING_ARCHITECTURE
2063
2064 // ----------------------------------------------------------------------------
2065 // File history (a.k.a. MRU, most recently used, files list)
2066 // ----------------------------------------------------------------------------
2067
2068 wxFileHistory::wxFileHistory(size_t maxFiles, wxWindowID idBase)
2069 {
2070     m_fileMaxFiles = maxFiles;
2071     m_idBase = idBase;
2072 }
2073
2074 void wxFileHistory::AddFileToHistory(const wxString& file)
2075 {
2076     // check if we don't already have this file
2077     const wxFileName fnNew(file);
2078     size_t i,
2079            numFiles = m_fileHistory.size();
2080     for ( i = 0; i < numFiles; i++ )
2081     {
2082         if ( fnNew == m_fileHistory[i] )
2083         {
2084             // we do have it, move it to the top of the history
2085             RemoveFileFromHistory(i);
2086             numFiles--;
2087             break;
2088         }
2089     }
2090
2091     // if we already have a full history, delete the one at the end
2092     if ( numFiles == m_fileMaxFiles )
2093     {
2094         RemoveFileFromHistory(--numFiles);
2095     }
2096
2097     // add a new menu item to all file menus (they will be updated below)
2098     for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2099         node;
2100         node = node->GetNext() )
2101     {
2102         wxMenu * const menu = (wxMenu *)node->GetData();
2103
2104         if ( !numFiles && menu->GetMenuItemCount() )
2105             menu->AppendSeparator();
2106
2107         // label doesn't matter, it will be set below anyhow, but it can't
2108         // be empty (this is supposed to indicate a stock item)
2109         menu->Append(m_idBase + numFiles, " ");
2110     }
2111
2112     // insert the new file in the beginning of the file history
2113     m_fileHistory.insert(m_fileHistory.begin(), file);
2114     numFiles++;
2115
2116     // update the labels in all menus
2117     for ( i = 0; i < numFiles; i++ )
2118     {
2119         // if in same directory just show the filename; otherwise the full path
2120         const wxFileName fnOld(m_fileHistory[i]);
2121
2122         wxString pathInMenu;
2123         if ( fnOld.GetPath() == fnNew.GetPath() )
2124         {
2125             pathInMenu = fnOld.GetFullName();
2126         }
2127         else // file in different directory
2128         {
2129             // absolute path; could also set relative path
2130             pathInMenu = m_fileHistory[i];
2131         }
2132
2133         for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2134               node;
2135               node = node->GetNext() )
2136         {
2137             wxMenu * const menu = (wxMenu *)node->GetData();
2138
2139             menu->SetLabel(m_idBase + i, GetMRUEntryLabel(i, pathInMenu));
2140         }
2141     }
2142 }
2143
2144 void wxFileHistory::RemoveFileFromHistory(size_t i)
2145 {
2146     size_t numFiles = m_fileHistory.size();
2147     wxCHECK_RET( i < numFiles,
2148                  wxT("invalid index in wxFileHistory::RemoveFileFromHistory") );
2149
2150     // delete the element from the array
2151     m_fileHistory.RemoveAt(i);
2152     numFiles--;
2153
2154     for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2155           node;
2156           node = node->GetNext() )
2157     {
2158         wxMenu * const menu = (wxMenu *) node->GetData();
2159
2160         // shift filenames up
2161         for ( size_t j = i; j < numFiles; j++ )
2162         {
2163             menu->SetLabel(m_idBase + j, GetMRUEntryLabel(j, m_fileHistory[j]));
2164         }
2165
2166         // delete the last menu item which is unused now
2167         const wxWindowID lastItemId = m_idBase + numFiles;
2168         if ( menu->FindItem(lastItemId) )
2169             menu->Delete(lastItemId);
2170
2171         // delete the last separator too if no more files are left
2172         if ( m_fileHistory.empty() )
2173         {
2174             const wxMenuItemList::compatibility_iterator
2175                 nodeLast = menu->GetMenuItems().GetLast();
2176             if ( nodeLast )
2177             {
2178                 wxMenuItem * const lastMenuItem = nodeLast->GetData();
2179                 if ( lastMenuItem->IsSeparator() )
2180                     menu->Delete(lastMenuItem);
2181             }
2182             //else: menu is empty somehow
2183         }
2184     }
2185 }
2186
2187 void wxFileHistory::UseMenu(wxMenu *menu)
2188 {
2189     if ( !m_fileMenus.Member(menu) )
2190         m_fileMenus.Append(menu);
2191 }
2192
2193 void wxFileHistory::RemoveMenu(wxMenu *menu)
2194 {
2195     m_fileMenus.DeleteObject(menu);
2196 }
2197
2198 #if wxUSE_CONFIG
2199 void wxFileHistory::Load(const wxConfigBase& config)
2200 {
2201     m_fileHistory.Clear();
2202
2203     wxString buf;
2204     buf.Printf(wxT("file%d"), 1);
2205
2206     wxString historyFile;
2207     while ((m_fileHistory.GetCount() < m_fileMaxFiles) &&
2208            config.Read(buf, &historyFile) && !historyFile.empty())
2209     {
2210         m_fileHistory.Add(historyFile);
2211
2212         buf.Printf(wxT("file%d"), (int)m_fileHistory.GetCount()+1);
2213         historyFile = wxEmptyString;
2214     }
2215
2216     AddFilesToMenu();
2217 }
2218
2219 void wxFileHistory::Save(wxConfigBase& config)
2220 {
2221     size_t i;
2222     for (i = 0; i < m_fileMaxFiles; i++)
2223     {
2224         wxString buf;
2225         buf.Printf(wxT("file%d"), (int)i+1);
2226         if (i < m_fileHistory.GetCount())
2227             config.Write(buf, wxString(m_fileHistory[i]));
2228         else
2229             config.Write(buf, wxEmptyString);
2230     }
2231 }
2232 #endif // wxUSE_CONFIG
2233
2234 void wxFileHistory::AddFilesToMenu()
2235 {
2236     if ( m_fileHistory.empty() )
2237         return;
2238
2239     for ( wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2240           node;
2241           node = node->GetNext() )
2242     {
2243         AddFilesToMenu((wxMenu *) node->GetData());
2244     }
2245 }
2246
2247 void wxFileHistory::AddFilesToMenu(wxMenu* menu)
2248 {
2249     if ( m_fileHistory.empty() )
2250         return;
2251
2252     if ( menu->GetMenuItemCount() )
2253         menu->AppendSeparator();
2254
2255     for ( size_t i = 0; i < m_fileHistory.GetCount(); i++ )
2256     {
2257         menu->Append(m_idBase + i, GetMRUEntryLabel(i, m_fileHistory[i]));
2258     }
2259 }
2260
2261 // ----------------------------------------------------------------------------
2262 // Permits compatibility with existing file formats and functions that
2263 // manipulate files directly
2264 // ----------------------------------------------------------------------------
2265
2266 #if wxUSE_STD_IOSTREAM
2267
2268 bool wxTransferFileToStream(const wxString& filename, wxSTD ostream& stream)
2269 {
2270 #if wxUSE_FFILE
2271     wxFFile file(filename, wxT("rb"));
2272 #elif wxUSE_FILE
2273     wxFile file(filename, wxFile::read);
2274 #endif
2275     if ( !file.IsOpened() )
2276         return false;
2277
2278     char buf[4096];
2279
2280     size_t nRead;
2281     do
2282     {
2283         nRead = file.Read(buf, WXSIZEOF(buf));
2284         if ( file.Error() )
2285             return false;
2286
2287         stream.write(buf, nRead);
2288         if ( !stream )
2289             return false;
2290     }
2291     while ( !file.Eof() );
2292
2293     return true;
2294 }
2295
2296 bool wxTransferStreamToFile(wxSTD istream& stream, const wxString& filename)
2297 {
2298 #if wxUSE_FFILE
2299     wxFFile file(filename, wxT("wb"));
2300 #elif wxUSE_FILE
2301     wxFile file(filename, wxFile::write);
2302 #endif
2303     if ( !file.IsOpened() )
2304         return false;
2305
2306     char buf[4096];
2307     do
2308     {
2309         stream.read(buf, WXSIZEOF(buf));
2310         if ( !stream.bad() ) // fail may be set on EOF, don't use operator!()
2311         {
2312             if ( !file.Write(buf, stream.gcount()) )
2313                 return false;
2314         }
2315     }
2316     while ( !stream.eof() );
2317
2318     return true;
2319 }
2320
2321 #else // !wxUSE_STD_IOSTREAM
2322
2323 bool wxTransferFileToStream(const wxString& filename, wxOutputStream& stream)
2324 {
2325 #if wxUSE_FFILE
2326     wxFFile file(filename, wxT("rb"));
2327 #elif wxUSE_FILE
2328     wxFile file(filename, wxFile::read);
2329 #endif
2330     if ( !file.IsOpened() )
2331         return false;
2332
2333     char buf[4096];
2334
2335     size_t nRead;
2336     do
2337     {
2338         nRead = file.Read(buf, WXSIZEOF(buf));
2339         if ( file.Error() )
2340             return false;
2341
2342         stream.Write(buf, nRead);
2343         if ( !stream )
2344             return false;
2345     }
2346     while ( !file.Eof() );
2347
2348     return true;
2349 }
2350
2351 bool wxTransferStreamToFile(wxInputStream& stream, const wxString& filename)
2352 {
2353 #if wxUSE_FFILE
2354     wxFFile file(filename, wxT("wb"));
2355 #elif wxUSE_FILE
2356     wxFile file(filename, wxFile::write);
2357 #endif
2358     if ( !file.IsOpened() )
2359         return false;
2360
2361     char buf[4096];
2362     for ( ;; )
2363     {
2364         stream.Read(buf, WXSIZEOF(buf));
2365
2366         const size_t nRead = stream.LastRead();
2367         if ( !nRead )
2368         {
2369             if ( stream.Eof() )
2370                 break;
2371
2372             return false;
2373         }
2374
2375         if ( !file.Write(buf, nRead) )
2376             return false;
2377     }
2378
2379     return true;
2380 }
2381
2382 #endif // wxUSE_STD_IOSTREAM/!wxUSE_STD_IOSTREAM
2383
2384 #endif // wxUSE_DOC_VIEW_ARCHITECTURE