src/common/docview.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/docview.cpp
   3 // Purpose:     Document/view classes
   4 // Author:      Julian Smart
   5 // Modified by:
   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 #include "wx/ffile.h"
  48
  49 #ifdef __WXMAC__
  50     #include "wx/filename.h"
  51 #endif
  52
  53 #if wxUSE_PRINTING_ARCHITECTURE
  54     #include "wx/prntbase.h"
  55     #include "wx/printdlg.h"
  56 #endif
  57
  58 #include "wx/confbase.h"
  59 #include "wx/file.h"
  60 #include "wx/cmdproc.h"
  61 #include "wx/tokenzr.h"
  62
  63 #include <stdio.h>
  64 #include <string.h>
  65
  66 #if wxUSE_STD_IOSTREAM
  67     #include "wx/ioswrap.h"
  68     #if wxUSE_IOSTREAMH
  69         #include <fstream.h>
  70     #else
  71         #include <fstream>
  72     #endif
  73 #else
  74     #include "wx/wfstream.h"
  75 #endif
  76
  77 // ----------------------------------------------------------------------------
  78 // wxWidgets macros
  79 // ----------------------------------------------------------------------------
  80
  81 IMPLEMENT_ABSTRACT_CLASS(wxDocument, wxEvtHandler)
  82 IMPLEMENT_ABSTRACT_CLASS(wxView, wxEvtHandler)
  83 IMPLEMENT_ABSTRACT_CLASS(wxDocTemplate, wxObject)
  84 IMPLEMENT_DYNAMIC_CLASS(wxDocManager, wxEvtHandler)
  85 IMPLEMENT_CLASS(wxDocChildFrame, wxFrame)
  86 IMPLEMENT_CLASS(wxDocParentFrame, wxFrame)
  87
  88 #if wxUSE_PRINTING_ARCHITECTURE
  89     IMPLEMENT_DYNAMIC_CLASS(wxDocPrintout, wxPrintout)
  90 #endif
  91
  92 IMPLEMENT_DYNAMIC_CLASS(wxFileHistory, wxObject)
  93
  94 // ----------------------------------------------------------------------------
  95 // function prototypes
  96 // ----------------------------------------------------------------------------
  97
  98 static inline wxString FindExtension(const wxChar *path);
  99 static wxWindow* wxFindSuitableParent(void);
 100
 101 // ----------------------------------------------------------------------------
 102 // local constants
 103 // ----------------------------------------------------------------------------
 104
 105 static const wxChar *s_MRUEntryFormat = wxT("&%d %s");
 106
 107 // ============================================================================
 108 // implementation
 109 // ============================================================================
 110
 111 // ----------------------------------------------------------------------------
 112 // local functions
 113 // ----------------------------------------------------------------------------
 114
 115 static wxString FindExtension(const wxChar *path)
 116 {
 117     wxString ext;
 118     wxSplitPath(path, NULL, NULL, &ext);
 119
 120     // VZ: extensions are considered not case sensitive - is this really a good
 121     //     idea?
 122     return ext.MakeLower();
 123 }
 124
 125 // ----------------------------------------------------------------------------
 126 // Definition of wxDocument
 127 // ----------------------------------------------------------------------------
 128
 129 wxDocument::wxDocument(wxDocument *parent)
 130 {
 131     m_documentModified = false;
 132     m_documentParent = parent;
 133     m_documentTemplate = (wxDocTemplate *) NULL;
 134     m_commandProcessor = (wxCommandProcessor*) NULL;
 135     m_savedYet = false;
 136 }
 137
 138 bool wxDocument::DeleteContents()
 139 {
 140     return true;
 141 }
 142
 143 wxDocument::~wxDocument()
 144 {
 145     DeleteContents();
 146
 147     if (m_commandProcessor)
 148         delete m_commandProcessor;
 149
 150     if (GetDocumentManager())
 151         GetDocumentManager()->RemoveDocument(this);
 152
 153     // Not safe to do here, since it'll invoke virtual view functions
 154     // expecting to see valid derived objects: and by the time we get here,
 155     // we've called destructors higher up.
 156     //DeleteAllViews();
 157 }
 158
 159 bool wxDocument::Close()
 160 {
 161     if (OnSaveModified())
 162         return OnCloseDocument();
 163     else
 164         return false;
 165 }
 166
 167 bool wxDocument::OnCloseDocument()
 168 {
 169     // Tell all views that we're about to close
 170     NotifyClosing();
 171     DeleteContents();
 172     Modify(false);
 173     return true;
 174 }
 175
 176 // Note that this implicitly deletes the document when the last view is
 177 // deleted.
 178 bool wxDocument::DeleteAllViews()
 179 {
 180     wxDocManager* manager = GetDocumentManager();
 181
 182     // first check if all views agree to be closed
 183     const wxList::iterator end = m_documentViews.end();
 184     for ( wxList::iterator i = m_documentViews.begin(); i != end; ++i )
 185     {
 186         wxView *view = (wxView *)*i;
 187         if ( !view->Close() )
 188             return false;
 189     }
 190
 191     // all views agreed to close, now do close them
 192     if ( m_documentViews.empty() )
 193     {
 194         // normally the document would be implicitly deleted when the last view
 195         // is, but if don't have any views, do it here instead
 196         if ( manager && manager->GetDocuments().Member(this) )
 197             delete this;
 198     }
 199     else // have views
 200     {
 201         // as we delete elements we iterate over, don't use the usual "from
 202         // begin to end" loop
 203         for ( ;; )
 204         {
 205             wxView *view = (wxView *)*m_documentViews.begin();
 206
 207             bool isLastOne = m_documentViews.size() == 1;
 208
 209             // this always deletes the node implicitly and if this is the last
 210             // view also deletes this object itself (also implicitly, great),
 211             // so we can't test for m_documentViews.empty() after calling this!
 212             delete view;
 213
 214             if ( isLastOne )
 215                 break;
 216         }
 217     }
 218
 219     return true;
 220 }
 221
 222 wxView *wxDocument::GetFirstView() const
 223 {
 224     if (m_documentViews.GetCount() == 0)
 225         return (wxView *) NULL;
 226     return (wxView *)m_documentViews.GetFirst()->GetData();
 227 }
 228
 229 wxDocManager *wxDocument::GetDocumentManager() const
 230 {
 231     return (m_documentTemplate ? m_documentTemplate->GetDocumentManager() : (wxDocManager*) NULL);
 232 }
 233
 234 bool wxDocument::OnNewDocument()
 235 {
 236     if (!OnSaveModified())
 237         return false;
 238
 239     if (OnCloseDocument()==false) return false;
 240     DeleteContents();
 241     Modify(false);
 242     SetDocumentSaved(false);
 243
 244     wxString name;
 245     GetDocumentManager()->MakeDefaultName(name);
 246     SetTitle(name);
 247     SetFilename(name, true);
 248
 249     return true;
 250 }
 251
 252 bool wxDocument::Save()
 253 {
 254     if (!IsModified() && m_savedYet)
 255         return true;
 256
 257     if ( m_documentFile.empty() || !m_savedYet )
 258         return SaveAs();
 259
 260     return OnSaveDocument(m_documentFile);
 261 }
 262
 263 bool wxDocument::SaveAs()
 264 {
 265     wxDocTemplate *docTemplate = GetDocumentTemplate();
 266     if (!docTemplate)
 267         return false;
 268
 269 #if defined(__WXMSW__) || defined(__WXGTK__) || defined(__WXMAC__)
 270     wxString filter = docTemplate->GetDescription() + wxT(" (") + docTemplate->GetFileFilter() + wxT(")|") + docTemplate->GetFileFilter();
 271
 272     // Now see if there are some other template with identical view and document
 273     // classes, whose filters may also be used.
 274
 275     if (docTemplate->GetViewClassInfo() && docTemplate->GetDocClassInfo())
 276     {
 277         wxList::compatibility_iterator node = wxDocManager::GetDocumentManager()->GetTemplates().GetFirst();
 278         while (node)
 279         {
 280             wxDocTemplate *t = (wxDocTemplate*) node->GetData();
 281
 282             if (t->IsVisible() && t != docTemplate &&
 283                 t->GetViewClassInfo() == docTemplate->GetViewClassInfo() &&
 284                 t->GetDocClassInfo() == docTemplate->GetDocClassInfo())
 285             {
 286                 // add a '|' to separate this filter from the previous one
 287                 if ( !filter.empty() )
 288                     filter << wxT('|');
 289
 290                 filter << t->GetDescription() << wxT(" (") << t->GetFileFilter() << wxT(") |")
 291                        << t->GetFileFilter();
 292             }
 293
 294             node = node->GetNext();
 295         }
 296     }
 297 #else
 298     wxString filter = docTemplate->GetFileFilter() ;
 299 #endif
 300     wxString tmp = wxFileSelector(_("Save as"),
 301             docTemplate->GetDirectory(),
 302             wxFileNameFromPath(GetFilename()),
 303             docTemplate->GetDefaultExtension(),
 304             filter,
 305             wxFD_SAVE | wxFD_OVERWRITE_PROMPT,
 306             GetDocumentWindow());
 307
 308     if (tmp.empty())
 309         return false;
 310
 311     wxString fileName(tmp);
 312     wxString path, name, ext;
 313     wxSplitPath(fileName, & path, & name, & ext);
 314
 315     if (ext.empty())
 316     {
 317         fileName += wxT(".");
 318         fileName += docTemplate->GetDefaultExtension();
 319     }
 320
 321     SetFilename(fileName);
 322     SetTitle(wxFileNameFromPath(fileName));
 323
 324     // Notify the views that the filename has changed
 325     wxList::compatibility_iterator node = m_documentViews.GetFirst();
 326     while (node)
 327     {
 328         wxView *view = (wxView *)node->GetData();
 329         view->OnChangeFilename();
 330         node = node->GetNext();
 331     }
 332
 333     // Files that were not saved correctly are not added to the FileHistory.
 334     if (!OnSaveDocument(m_documentFile))
 335         return false;
 336
 337    // A file that doesn't use the default extension of its document template cannot be opened
 338    // via the FileHistory, so we do not add it.
 339    if (docTemplate->FileMatchesTemplate(fileName))
 340    {
 341        GetDocumentManager()->AddFileToHistory(fileName);
 342    }
 343    else
 344    {
 345        // The user will probably not be able to open the file again, so
 346        // we could warn about the wrong file-extension here.
 347    }
 348    return true;
 349 }
 350
 351 bool wxDocument::OnSaveDocument(const wxString& file)
 352 {
 353     if ( !file )
 354         return false;
 355
 356     if ( !DoSaveDocument(file) )
 357         return false;
 358
 359     Modify(false);
 360     SetFilename(file);
 361     SetDocumentSaved(true);
 362 #ifdef __WXMAC__
 363     wxFileName fn(file) ;
 364     fn.MacSetDefaultTypeAndCreator() ;
 365 #endif
 366     return true;
 367 }
 368
 369 bool wxDocument::OnOpenDocument(const wxString& file)
 370 {
 371     if (!OnSaveModified())
 372         return false;
 373
 374     if ( !DoOpenDocument(file) )
 375         return false;
 376
 377     SetFilename(file, true);
 378     Modify(false);
 379     m_savedYet = true;
 380
 381     UpdateAllViews();
 382
 383     return true;
 384 }
 385
 386 #if wxUSE_STD_IOSTREAM
 387 wxSTD istream& wxDocument::LoadObject(wxSTD istream& stream)
 388 #else
 389 wxInputStream& wxDocument::LoadObject(wxInputStream& stream)
 390 #endif
 391 {
 392     return stream;
 393 }
 394
 395 #if wxUSE_STD_IOSTREAM
 396 wxSTD ostream& wxDocument::SaveObject(wxSTD ostream& stream)
 397 #else
 398 wxOutputStream& wxDocument::SaveObject(wxOutputStream& stream)
 399 #endif
 400 {
 401     return stream;
 402 }
 403
 404 bool wxDocument::Revert()
 405 {
 406     return false;
 407 }
 408
 409
 410 // Get title, or filename if no title, else unnamed
 411 bool wxDocument::GetPrintableName(wxString& buf) const
 412 {
 413     if (!m_documentTitle.empty())
 414     {
 415         buf = m_documentTitle;
 416         return true;
 417     }
 418     else if (!m_documentFile.empty())
 419     {
 420         buf = wxFileNameFromPath(m_documentFile);
 421         return true;
 422     }
 423     else
 424     {
 425         buf = _("unnamed");
 426         return true;
 427     }
 428 }
 429
 430 wxWindow *wxDocument::GetDocumentWindow() const
 431 {
 432     wxView *view = GetFirstView();
 433     if (view)
 434         return view->GetFrame();
 435     else
 436         return wxTheApp->GetTopWindow();
 437 }
 438
 439 wxCommandProcessor *wxDocument::OnCreateCommandProcessor()
 440 {
 441     return new wxCommandProcessor;
 442 }
 443
 444 // true if safe to close
 445 bool wxDocument::OnSaveModified()
 446 {
 447     if (IsModified())
 448     {
 449         wxString title;
 450         GetPrintableName(title);
 451
 452         wxString msgTitle;
 453         if (!wxTheApp->GetAppName().empty())
 454             msgTitle = wxTheApp->GetAppName();
 455         else
 456             msgTitle = wxString(_("Warning"));
 457
 458         wxString prompt;
 459         prompt.Printf(_("Do you want to save changes to document %s?"),
 460                 (const wxChar *)title);
 461         int res = wxMessageBox(prompt, msgTitle,
 462                 wxYES_NO|wxCANCEL|wxICON_QUESTION,
 463                 GetDocumentWindow());
 464         if (res == wxNO)
 465         {
 466             Modify(false);
 467             return true;
 468         }
 469         else if (res == wxYES)
 470             return Save();
 471         else if (res == wxCANCEL)
 472             return false;
 473     }
 474     return true;
 475 }
 476
 477 bool wxDocument::Draw(wxDC& WXUNUSED(context))
 478 {
 479     return true;
 480 }
 481
 482 bool wxDocument::AddView(wxView *view)
 483 {
 484     if (!m_documentViews.Member(view))
 485     {
 486         m_documentViews.Append(view);
 487         OnChangedViewList();
 488     }
 489     return true;
 490 }
 491
 492 bool wxDocument::RemoveView(wxView *view)
 493 {
 494     (void)m_documentViews.DeleteObject(view);
 495     OnChangedViewList();
 496     return true;
 497 }
 498
 499 bool wxDocument::OnCreate(const wxString& WXUNUSED(path), long flags)
 500 {
 501     if (GetDocumentTemplate()->CreateView(this, flags))
 502         return true;
 503     else
 504         return false;
 505 }
 506
 507 // Called after a view is added or removed.
 508 // The default implementation deletes the document if
 509 // there are no more views.
 510 void wxDocument::OnChangedViewList()
 511 {
 512     if (m_documentViews.GetCount() == 0)
 513     {
 514         if (OnSaveModified())
 515         {
 516             delete this;
 517         }
 518     }
 519 }
 520
 521 void wxDocument::UpdateAllViews(wxView *sender, wxObject *hint)
 522 {
 523     wxList::compatibility_iterator node = m_documentViews.GetFirst();
 524     while (node)
 525     {
 526         wxView *view = (wxView *)node->GetData();
 527         if (view != sender)
 528             view->OnUpdate(sender, hint);
 529         node = node->GetNext();
 530     }
 531 }
 532
 533 void wxDocument::NotifyClosing()
 534 {
 535     wxList::compatibility_iterator node = m_documentViews.GetFirst();
 536     while (node)
 537     {
 538         wxView *view = (wxView *)node->GetData();
 539         view->OnClosingDocument();
 540         node = node->GetNext();
 541     }
 542 }
 543
 544 void wxDocument::SetFilename(const wxString& filename, bool notifyViews)
 545 {
 546     m_documentFile = filename;
 547     if ( notifyViews )
 548     {
 549         // Notify the views that the filename has changed
 550         wxList::compatibility_iterator node = m_documentViews.GetFirst();
 551         while (node)
 552         {
 553             wxView *view = (wxView *)node->GetData();
 554             view->OnChangeFilename();
 555             node = node->GetNext();
 556         }
 557     }
 558 }
 559
 560 bool wxDocument::DoSaveDocument(const wxString& file)
 561 {
 562     wxString msgTitle;
 563     if (!wxTheApp->GetAppName().empty())
 564         msgTitle = wxTheApp->GetAppName();
 565     else
 566         msgTitle = wxString(_("File error"));
 567
 568 #if wxUSE_STD_IOSTREAM
 569     wxSTD ofstream store(file.mb_str(), wxSTD ios::binary);
 570     if (store.fail() || store.bad())
 571 #else
 572     wxFileOutputStream store(file);
 573     if (store.GetLastError() != wxSTREAM_NO_ERROR)
 574 #endif
 575     {
 576         (void)wxMessageBox(_("Sorry, could not open this file for saving."), msgTitle, wxOK | wxICON_EXCLAMATION,
 577                            GetDocumentWindow());
 578         // Saving error
 579         return false;
 580     }
 581     if (!SaveObject(store))
 582     {
 583         (void)wxMessageBox(_("Sorry, could not save this file."), msgTitle, wxOK | wxICON_EXCLAMATION,
 584                            GetDocumentWindow());
 585         // Saving error
 586         return false;
 587     }
 588
 589     return true;
 590 }
 591
 592 bool wxDocument::DoOpenDocument(const wxString& file)
 593 {
 594 #if wxUSE_STD_IOSTREAM
 595     wxSTD ifstream store(file.mb_str(), wxSTD ios::binary);
 596     if (!store.fail() && !store.bad())
 597 #else
 598     wxFileInputStream store(file);
 599     if (store.GetLastError() == wxSTREAM_NO_ERROR)
 600 #endif
 601     {
 602 #if wxUSE_STD_IOSTREAM
 603         LoadObject(store);
 604         if ( !!store || store.eof() )
 605 #else
 606         int res = LoadObject(store).GetLastError();
 607         if ( res == wxSTREAM_NO_ERROR || res == wxSTREAM_EOF )
 608 #endif
 609             return true;
 610     }
 611
 612     wxLogError(_("Sorry, could not open this file."));
 613     return false;
 614 }
 615
 616
 617 // ----------------------------------------------------------------------------
 618 // Document view
 619 // ----------------------------------------------------------------------------
 620
 621 wxView::wxView()
 622 {
 623     m_viewDocument = (wxDocument*) NULL;
 624
 625     m_viewFrame = (wxFrame *) NULL;
 626 }
 627
 628 wxView::~wxView()
 629 {
 630     GetDocumentManager()->ActivateView(this, false);
 631     m_viewDocument->RemoveView(this);
 632 }
 633
 634 // Extend event processing to search the document's event table
 635 bool wxView::ProcessEvent(wxEvent& event)
 636 {
 637     if ( !GetDocument() || !GetDocument()->ProcessEvent(event) )
 638         return wxEvtHandler::ProcessEvent(event);
 639
 640     return true;
 641 }
 642
 643 void wxView::OnActivateView(bool WXUNUSED(activate), wxView *WXUNUSED(activeView), wxView *WXUNUSED(deactiveView))
 644 {
 645 }
 646
 647 void wxView::OnPrint(wxDC *dc, wxObject *WXUNUSED(info))
 648 {
 649     OnDraw(dc);
 650 }
 651
 652 void wxView::OnUpdate(wxView *WXUNUSED(sender), wxObject *WXUNUSED(hint))
 653 {
 654 }
 655
 656 void wxView::OnChangeFilename()
 657 {
 658     // GetFrame can return wxWindow rather than wxTopLevelWindow due to
 659     // generic MDI implementation so use SetLabel rather than SetTitle.
 660     // It should cause SetTitle() for top level windows.
 661     wxWindow *win = GetFrame();
 662     if (!win) return;
 663
 664     wxDocument *doc = GetDocument();
 665     if (!doc) return;
 666
 667     wxString name;
 668     doc->GetPrintableName(name);
 669     win->SetLabel(name);
 670 }
 671
 672 void wxView::SetDocument(wxDocument *doc)
 673 {
 674     m_viewDocument = doc;
 675     if (doc)
 676         doc->AddView(this);
 677 }
 678
 679 bool wxView::Close(bool deleteWindow)
 680 {
 681     if (OnClose(deleteWindow))
 682         return true;
 683     else
 684         return false;
 685 }
 686
 687 void wxView::Activate(bool activate)
 688 {
 689     if (GetDocument() && GetDocumentManager())
 690     {
 691         OnActivateView(activate, this, GetDocumentManager()->GetCurrentView());
 692         GetDocumentManager()->ActivateView(this, activate);
 693     }
 694 }
 695
 696 bool wxView::OnClose(bool WXUNUSED(deleteWindow))
 697 {
 698     return GetDocument() ? GetDocument()->Close() : true;
 699 }
 700
 701 #if wxUSE_PRINTING_ARCHITECTURE
 702 wxPrintout *wxView::OnCreatePrintout()
 703 {
 704     return new wxDocPrintout(this);
 705 }
 706 #endif // wxUSE_PRINTING_ARCHITECTURE
 707
 708 // ----------------------------------------------------------------------------
 709 // wxDocTemplate
 710 // ----------------------------------------------------------------------------
 711
 712 wxDocTemplate::wxDocTemplate(wxDocManager *manager,
 713                              const wxString& descr,
 714                              const wxString& filter,
 715                              const wxString& dir,
 716                              const wxString& ext,
 717                              const wxString& docTypeName,
 718                              const wxString& viewTypeName,
 719                              wxClassInfo *docClassInfo,
 720                              wxClassInfo *viewClassInfo,
 721                              long flags)
 722 {
 723     m_documentManager = manager;
 724     m_description = descr;
 725     m_directory = dir;
 726     m_defaultExt = ext;
 727     m_fileFilter = filter;
 728     m_flags = flags;
 729     m_docTypeName = docTypeName;
 730     m_viewTypeName = viewTypeName;
 731     m_documentManager->AssociateTemplate(this);
 732
 733     m_docClassInfo = docClassInfo;
 734     m_viewClassInfo = viewClassInfo;
 735 }
 736
 737 wxDocTemplate::~wxDocTemplate()
 738 {
 739     m_documentManager->DisassociateTemplate(this);
 740 }
 741
 742 // Tries to dynamically construct an object of the right class.
 743 wxDocument *wxDocTemplate::CreateDocument(const wxString& path, long flags)
 744 {
 745     wxDocument *doc = DoCreateDocument();
 746     if ( doc == NULL )
 747         return (wxDocument *) NULL;
 748
 749     if (InitDocument(doc, path, flags))
 750     {
 751         return doc;
 752     }
 753     else
 754     {
 755         return (wxDocument *) NULL;
 756     }
 757 }
 758
 759 bool wxDocTemplate::InitDocument(wxDocument* doc, const wxString& path, long flags)
 760 {
 761     doc->SetFilename(path);
 762     doc->SetDocumentTemplate(this);
 763     GetDocumentManager()->AddDocument(doc);
 764     doc->SetCommandProcessor(doc->OnCreateCommandProcessor());
 765
 766     if (doc->OnCreate(path, flags))
 767         return true;
 768     else
 769     {
 770         if (GetDocumentManager()->GetDocuments().Member(doc))
 771             doc->DeleteAllViews();
 772         return false;
 773     }
 774 }
 775
 776 wxView *wxDocTemplate::CreateView(wxDocument *doc, long flags)
 777 {
 778     wxView *view = DoCreateView();
 779     if ( view == NULL )
 780         return (wxView *) NULL;
 781
 782     view->SetDocument(doc);
 783     if (view->OnCreate(doc, flags))
 784     {
 785         return view;
 786     }
 787     else
 788     {
 789         delete view;
 790         return (wxView *) NULL;
 791     }
 792 }
 793
 794 // The default (very primitive) format detection: check is the extension is
 795 // that of the template
 796 bool wxDocTemplate::FileMatchesTemplate(const wxString& path)
 797 {
 798     wxStringTokenizer parser (GetFileFilter(), wxT(";"));
 799     wxString anything = wxT ("*");
 800     while (parser.HasMoreTokens())
 801     {
 802         wxString filter = parser.GetNextToken();
 803         wxString filterExt = FindExtension (filter);
 804         if ( filter.IsSameAs (anything)    ||
 805              filterExt.IsSameAs (anything) ||
 806              filterExt.IsSameAs (FindExtension (path)) )
 807             return true;
 808     }
 809     return GetDefaultExtension().IsSameAs(FindExtension(path));
 810 }
 811
 812 wxDocument *wxDocTemplate::DoCreateDocument()
 813 {
 814     if (!m_docClassInfo)
 815         return (wxDocument *) NULL;
 816
 817     return (wxDocument *)m_docClassInfo->CreateObject();
 818 }
 819
 820 wxView *wxDocTemplate::DoCreateView()
 821 {
 822     if (!m_viewClassInfo)
 823         return (wxView *) NULL;
 824
 825     return (wxView *)m_viewClassInfo->CreateObject();
 826 }
 827
 828 // ----------------------------------------------------------------------------
 829 // wxDocManager
 830 // ----------------------------------------------------------------------------
 831
 832 BEGIN_EVENT_TABLE(wxDocManager, wxEvtHandler)
 833     EVT_MENU(wxID_OPEN, wxDocManager::OnFileOpen)
 834     EVT_MENU(wxID_CLOSE, wxDocManager::OnFileClose)
 835     EVT_MENU(wxID_CLOSE_ALL, wxDocManager::OnFileCloseAll)
 836     EVT_MENU(wxID_REVERT, wxDocManager::OnFileRevert)
 837     EVT_MENU(wxID_NEW, wxDocManager::OnFileNew)
 838     EVT_MENU(wxID_SAVE, wxDocManager::OnFileSave)
 839     EVT_MENU(wxID_SAVEAS, wxDocManager::OnFileSaveAs)
 840     EVT_MENU(wxID_UNDO, wxDocManager::OnUndo)
 841     EVT_MENU(wxID_REDO, wxDocManager::OnRedo)
 842
 843     EVT_UPDATE_UI(wxID_OPEN, wxDocManager::OnUpdateFileOpen)
 844     EVT_UPDATE_UI(wxID_CLOSE, wxDocManager::OnUpdateFileClose)
 845     EVT_UPDATE_UI(wxID_CLOSE_ALL, wxDocManager::OnUpdateFileClose)
 846     EVT_UPDATE_UI(wxID_REVERT, wxDocManager::OnUpdateFileRevert)
 847     EVT_UPDATE_UI(wxID_NEW, wxDocManager::OnUpdateFileNew)
 848     EVT_UPDATE_UI(wxID_SAVE, wxDocManager::OnUpdateFileSave)
 849     EVT_UPDATE_UI(wxID_SAVEAS, wxDocManager::OnUpdateFileSaveAs)
 850     EVT_UPDATE_UI(wxID_UNDO, wxDocManager::OnUpdateUndo)
 851     EVT_UPDATE_UI(wxID_REDO, wxDocManager::OnUpdateRedo)
 852
 853 #if wxUSE_PRINTING_ARCHITECTURE
 854     EVT_MENU(wxID_PRINT, wxDocManager::OnPrint)
 855     EVT_MENU(wxID_PREVIEW, wxDocManager::OnPreview)
 856
 857     EVT_UPDATE_UI(wxID_PRINT, wxDocManager::OnUpdatePrint)
 858     EVT_UPDATE_UI(wxID_PREVIEW, wxDocManager::OnUpdatePreview)
 859 #endif
 860 END_EVENT_TABLE()
 861
 862 wxDocManager* wxDocManager::sm_docManager = (wxDocManager*) NULL;
 863
 864 wxDocManager::wxDocManager(long flags, bool initialize)
 865 {
 866     m_defaultDocumentNameCounter = 1;
 867     m_flags = flags;
 868     m_currentView = (wxView *) NULL;
 869     m_maxDocsOpen = 10000;
 870     m_fileHistory = (wxFileHistory *) NULL;
 871     if (initialize)
 872         Initialize();
 873     sm_docManager = this;
 874 }
 875
 876 wxDocManager::~wxDocManager()
 877 {
 878     Clear();
 879     if (m_fileHistory)
 880         delete m_fileHistory;
 881     sm_docManager = (wxDocManager*) NULL;
 882 }
 883
 884 // closes the specified document
 885 bool wxDocManager::CloseDocument(wxDocument* doc, bool force)
 886 {
 887     if (doc->Close() || force)
 888     {
 889         // Implicitly deletes the document when
 890         // the last view is deleted
 891         doc->DeleteAllViews();
 892
 893         // Check we're really deleted
 894         if (m_docs.Member(doc))
 895             delete doc;
 896
 897         return true;
 898     }
 899     return false;
 900 }
 901
 902 bool wxDocManager::CloseDocuments(bool force)
 903 {
 904     wxList::compatibility_iterator node = m_docs.GetFirst();
 905     while (node)
 906     {
 907         wxDocument *doc = (wxDocument *)node->GetData();
 908         wxList::compatibility_iterator next = node->GetNext();
 909
 910         if (!CloseDocument(doc, force))
 911             return false;
 912
 913         // This assumes that documents are not connected in
 914         // any way, i.e. deleting one document does NOT
 915         // delete another.
 916         node = next;
 917     }
 918     return true;
 919 }
 920
 921 bool wxDocManager::Clear(bool force)
 922 {
 923     if (!CloseDocuments(force))
 924         return false;
 925
 926     m_currentView = NULL;
 927
 928     wxList::compatibility_iterator node = m_templates.GetFirst();
 929     while (node)
 930     {
 931         wxDocTemplate *templ = (wxDocTemplate*) node->GetData();
 932         wxList::compatibility_iterator next = node->GetNext();
 933         delete templ;
 934         node = next;
 935     }
 936     return true;
 937 }
 938
 939 bool wxDocManager::Initialize()
 940 {
 941     m_fileHistory = OnCreateFileHistory();
 942     return true;
 943 }
 944
 945 wxFileHistory *wxDocManager::OnCreateFileHistory()
 946 {
 947     return new wxFileHistory;
 948 }
 949
 950 void wxDocManager::OnFileClose(wxCommandEvent& WXUNUSED(event))
 951 {
 952     wxDocument *doc = GetCurrentDocument();
 953     if (!doc)
 954         return;
 955     if (doc->Close())
 956     {
 957         doc->DeleteAllViews();
 958         if (m_docs.Member(doc))
 959             delete doc;
 960     }
 961 }
 962
 963 void wxDocManager::OnFileCloseAll(wxCommandEvent& WXUNUSED(event))
 964 {
 965     CloseDocuments(false);
 966 }
 967
 968 void wxDocManager::OnFileNew(wxCommandEvent& WXUNUSED(event))
 969 {
 970     CreateDocument( wxEmptyString, wxDOC_NEW );
 971 }
 972
 973 void wxDocManager::OnFileOpen(wxCommandEvent& WXUNUSED(event))
 974 {
 975     if ( !CreateDocument( wxEmptyString, 0) )
 976     {
 977         OnOpenFileFailure();
 978     }
 979 }
 980
 981 void wxDocManager::OnFileRevert(wxCommandEvent& WXUNUSED(event))
 982 {
 983     wxDocument *doc = GetCurrentDocument();
 984     if (!doc)
 985         return;
 986     doc->Revert();
 987 }
 988
 989 void wxDocManager::OnFileSave(wxCommandEvent& WXUNUSED(event))
 990 {
 991     wxDocument *doc = GetCurrentDocument();
 992     if (!doc)
 993         return;
 994     doc->Save();
 995 }
 996
 997 void wxDocManager::OnFileSaveAs(wxCommandEvent& WXUNUSED(event))
 998 {
 999     wxDocument *doc = GetCurrentDocument();
1000     if (!doc)
1001         return;
1002     doc->SaveAs();
1003 }
1004
1005 void wxDocManager::OnPrint(wxCommandEvent& WXUNUSED(event))
1006 {
1007 #if wxUSE_PRINTING_ARCHITECTURE
1008     wxView *view = GetCurrentView();
1009     if (!view)
1010         return;
1011
1012     wxPrintout *printout = view->OnCreatePrintout();
1013     if (printout)
1014     {
1015         wxPrinter printer;
1016         printer.Print(view->GetFrame(), printout, true);
1017
1018         delete printout;
1019     }
1020 #endif // wxUSE_PRINTING_ARCHITECTURE
1021 }
1022
1023 void wxDocManager::OnPreview(wxCommandEvent& WXUNUSED(event))
1024 {
1025 #if wxUSE_PRINTING_ARCHITECTURE
1026     wxView *view = GetCurrentView();
1027     if (!view)
1028         return;
1029
1030     wxPrintout *printout = view->OnCreatePrintout();
1031     if (printout)
1032     {
1033         // Pass two printout objects: for preview, and possible printing.
1034         wxPrintPreviewBase *preview = new wxPrintPreview(printout, view->OnCreatePrintout());
1035         if ( !preview->Ok() )
1036         {
1037             delete preview;
1038             wxMessageBox( _("Sorry, print preview needs a printer to be installed.") );
1039             return;
1040         }
1041
1042         wxPreviewFrame *frame = new wxPreviewFrame(preview, (wxFrame *)wxTheApp->GetTopWindow(), _("Print Preview"),
1043                 wxPoint(100, 100), wxSize(600, 650));
1044         frame->Centre(wxBOTH);
1045         frame->Initialize();
1046         frame->Show(true);
1047     }
1048 #endif // wxUSE_PRINTING_ARCHITECTURE
1049 }
1050
1051 void wxDocManager::OnUndo(wxCommandEvent& event)
1052 {
1053     wxDocument *doc = GetCurrentDocument();
1054     if (!doc)
1055         return;
1056     if (doc->GetCommandProcessor())
1057         doc->GetCommandProcessor()->Undo();
1058     else
1059         event.Skip();
1060 }
1061
1062 void wxDocManager::OnRedo(wxCommandEvent& event)
1063 {
1064     wxDocument *doc = GetCurrentDocument();
1065     if (!doc)
1066         return;
1067     if (doc->GetCommandProcessor())
1068         doc->GetCommandProcessor()->Redo();
1069     else
1070         event.Skip();
1071 }
1072
1073 // Handlers for UI update commands
1074
1075 void wxDocManager::OnUpdateFileOpen(wxUpdateUIEvent& event)
1076 {
1077     event.Enable( true );
1078 }
1079
1080 void wxDocManager::OnUpdateFileClose(wxUpdateUIEvent& event)
1081 {
1082     wxDocument *doc = GetCurrentDocument();
1083     event.Enable( (doc != (wxDocument*) NULL) );
1084 }
1085
1086 void wxDocManager::OnUpdateFileRevert(wxUpdateUIEvent& event)
1087 {
1088     wxDocument *doc = GetCurrentDocument();
1089     event.Enable( (doc != (wxDocument*) NULL) );
1090 }
1091
1092 void wxDocManager::OnUpdateFileNew(wxUpdateUIEvent& event)
1093 {
1094     event.Enable( true );
1095 }
1096
1097 void wxDocManager::OnUpdateFileSave(wxUpdateUIEvent& event)
1098 {
1099     wxDocument *doc = GetCurrentDocument();
1100     event.Enable( doc && doc->IsModified() );
1101 }
1102
1103 void wxDocManager::OnUpdateFileSaveAs(wxUpdateUIEvent& event)
1104 {
1105     wxDocument *doc = GetCurrentDocument();
1106     event.Enable( (doc != (wxDocument*) NULL) );
1107 }
1108
1109 void wxDocManager::OnUpdateUndo(wxUpdateUIEvent& event)
1110 {
1111     wxDocument *doc = GetCurrentDocument();
1112     if (!doc)
1113         event.Enable(false);
1114     else if (!doc->GetCommandProcessor())
1115         event.Skip();
1116     else
1117     {
1118         event.Enable( doc->GetCommandProcessor()->CanUndo() );
1119         doc->GetCommandProcessor()->SetMenuStrings();
1120     }
1121 }
1122
1123 void wxDocManager::OnUpdateRedo(wxUpdateUIEvent& event)
1124 {
1125     wxDocument *doc = GetCurrentDocument();
1126     if (!doc)
1127         event.Enable(false);
1128     else if (!doc->GetCommandProcessor())
1129         event.Skip();
1130     else
1131     {
1132         event.Enable( doc->GetCommandProcessor()->CanRedo() );
1133         doc->GetCommandProcessor()->SetMenuStrings();
1134     }
1135 }
1136
1137 void wxDocManager::OnUpdatePrint(wxUpdateUIEvent& event)
1138 {
1139     wxDocument *doc = GetCurrentDocument();
1140     event.Enable( (doc != (wxDocument*) NULL) );
1141 }
1142
1143 void wxDocManager::OnUpdatePreview(wxUpdateUIEvent& event)
1144 {
1145     wxDocument *doc = GetCurrentDocument();
1146     event.Enable( (doc != (wxDocument*) NULL) );
1147 }
1148
1149 wxView *wxDocManager::GetCurrentView() const
1150 {
1151     if (m_currentView)
1152         return m_currentView;
1153     if (m_docs.GetCount() == 1)
1154     {
1155         wxDocument* doc = (wxDocument*) m_docs.GetFirst()->GetData();
1156         return doc->GetFirstView();
1157     }
1158     return (wxView *) NULL;
1159 }
1160
1161 // Extend event processing to search the view's event table
1162 bool wxDocManager::ProcessEvent(wxEvent& event)
1163 {
1164     wxView* view = GetCurrentView();
1165     if (view)
1166     {
1167         if (view->ProcessEvent(event))
1168             return true;
1169     }
1170     return wxEvtHandler::ProcessEvent(event);
1171 }
1172
1173 wxDocument *wxDocManager::CreateDocument(const wxString& path, long flags)
1174 {
1175     wxDocTemplate   **templates = new wxDocTemplate *[m_templates.GetCount()];
1176     int               n = 0;
1177
1178     for (size_t i = 0; i < m_templates.GetCount(); i++)
1179     {
1180         wxDocTemplate *temp = (wxDocTemplate *)(m_templates.Item(i)->GetData());
1181         if (temp->IsVisible())
1182         {
1183             templates[n] = temp;
1184             n ++;
1185         }
1186     }
1187     if (n == 0)
1188     {
1189         delete[] templates;
1190         return (wxDocument *) NULL;
1191     }
1192
1193     wxDocument* docToClose = NULL;
1194
1195     // If we've reached the max number of docs, close the
1196     // first one.
1197     if ( (int)GetDocuments().GetCount() >= m_maxDocsOpen )
1198     {
1199         wxDocument *doc = (wxDocument *)GetDocuments().GetFirst()->GetData();
1200         docToClose = doc;
1201     }
1202
1203     // New document: user chooses a template, unless there's only one.
1204     if (flags & wxDOC_NEW)
1205     {
1206         if (n == 1)
1207         {
1208             if (docToClose)
1209             {
1210                 if (!CloseDocument(docToClose, false))
1211                 {
1212                     delete[] templates;
1213                     return NULL;
1214                 }
1215             }
1216
1217             wxDocTemplate *temp = templates[0];
1218             delete[] templates;
1219             wxDocument *newDoc = temp->CreateDocument(path, flags);
1220
1221             if (newDoc)
1222             {
1223                 newDoc->SetDocumentName(temp->GetDocumentName());
1224                 newDoc->SetDocumentTemplate(temp);
1225                 if (!newDoc->OnNewDocument() )
1226                 {
1227                      // Document is implicitly deleted by DeleteAllViews
1228                      newDoc->DeleteAllViews();
1229                      return NULL;
1230                 }
1231             }
1232             return newDoc;
1233         }
1234
1235         wxDocTemplate *temp = SelectDocumentType(templates, n);
1236         delete[] templates;
1237         if (temp)
1238         {
1239             if (docToClose)
1240             {
1241                 if (!CloseDocument(docToClose, false))
1242                 {
1243                     return NULL;
1244                 }
1245             }
1246
1247             wxDocument *newDoc = temp->CreateDocument(path, flags);
1248
1249             if (newDoc)
1250             {
1251                 newDoc->SetDocumentName(temp->GetDocumentName());
1252                 newDoc->SetDocumentTemplate(temp);
1253                 if (!newDoc->OnNewDocument() )
1254                 {
1255                      // Document is implicitly deleted by DeleteAllViews
1256                      newDoc->DeleteAllViews();
1257                      return NULL;
1258                 }
1259             }
1260             return newDoc;
1261         }
1262         else
1263             return (wxDocument *) NULL;
1264     }
1265
1266     // Existing document
1267     wxDocTemplate *temp;
1268
1269     wxString path2 = path;
1270
1271     if (flags & wxDOC_SILENT)
1272     {
1273         temp = FindTemplateForPath(path2);
1274         if (!temp)
1275         {
1276             // Since we do not add files with non-default extensions to the FileHistory this
1277             // can only happen if the application changes the allowed templates in runtime.
1278             (void)wxMessageBox(_("Sorry, the format for this file is unknown."),
1279                                 _("Open File"),
1280                                wxOK | wxICON_EXCLAMATION, wxFindSuitableParent());
1281         }
1282     }
1283     else
1284         temp = SelectDocumentPath(templates, n, path2, flags);
1285
1286     delete[] templates;
1287
1288     if (temp)
1289     {
1290         if (docToClose)
1291         {
1292             if (!CloseDocument(docToClose, false))
1293             {
1294                 return NULL;
1295             }
1296         }
1297
1298         //see if this file is already open
1299         for (size_t i = 0; i < GetDocuments().GetCount(); ++i)
1300         {
1301             wxDocument* currentDoc = (wxDocument*)(GetDocuments().Item(i)->GetData());
1302 #ifdef __WXMSW__
1303             //file paths are case-insensitive on Windows
1304             if (path2.CmpNoCase(currentDoc->GetFilename()) == 0)
1305 #else
1306             if (path2.Cmp(currentDoc->GetFilename()) == 0)
1307 #endif
1308             {
1309                 //file already open. Just activate it and return
1310                 if (currentDoc->GetFirstView())
1311                 {
1312                     ActivateView(currentDoc->GetFirstView(), true);
1313                     if (currentDoc->GetDocumentWindow())
1314                         currentDoc->GetDocumentWindow()->SetFocus();
1315                     return currentDoc;
1316                 }
1317             }
1318         }
1319
1320         wxDocument *newDoc = temp->CreateDocument(path2, flags);
1321         if (newDoc)
1322         {
1323             newDoc->SetDocumentName(temp->GetDocumentName());
1324             newDoc->SetDocumentTemplate(temp);
1325             if (!newDoc->OnOpenDocument(path2))
1326             {
1327                 newDoc->DeleteAllViews();
1328                 // delete newDoc; // Implicitly deleted by DeleteAllViews
1329                 return (wxDocument *) NULL;
1330             }
1331             // A file that doesn't use the default extension of its document
1332             // template cannot be opened via the FileHistory, so we do not
1333             // add it.
1334             if (temp->FileMatchesTemplate(path2))
1335                 AddFileToHistory(path2);
1336         }
1337         return newDoc;
1338     }
1339
1340     return (wxDocument *) NULL;
1341 }
1342
1343 wxView *wxDocManager::CreateView(wxDocument *doc, long flags)
1344 {
1345     wxDocTemplate   **templates = new wxDocTemplate *[m_templates.GetCount()];
1346     int               n =0;
1347
1348     for (size_t i = 0; i < m_templates.GetCount(); i++)
1349     {
1350         wxDocTemplate *temp = (wxDocTemplate *)(m_templates.Item(i)->GetData());
1351         if (temp->IsVisible())
1352         {
1353             if (temp->GetDocumentName() == doc->GetDocumentName())
1354             {
1355                 templates[n] = temp;
1356                 n ++;
1357             }
1358         }
1359     }
1360     if (n == 0)
1361     {
1362         delete[] templates;
1363         return (wxView *) NULL;
1364     }
1365     if (n == 1)
1366     {
1367         wxDocTemplate *temp = templates[0];
1368         delete[] templates;
1369         wxView *view = temp->CreateView(doc, flags);
1370         if (view)
1371             view->SetViewName(temp->GetViewName());
1372         return view;
1373     }
1374
1375     wxDocTemplate *temp = SelectViewType(templates, n);
1376     delete[] templates;
1377     if (temp)
1378     {
1379         wxView *view = temp->CreateView(doc, flags);
1380         if (view)
1381             view->SetViewName(temp->GetViewName());
1382         return view;
1383     }
1384     else
1385         return (wxView *) NULL;
1386 }
1387
1388 // Not yet implemented
1389 void wxDocManager::DeleteTemplate(wxDocTemplate *WXUNUSED(temp), long WXUNUSED(flags))
1390 {
1391 }
1392
1393 // Not yet implemented
1394 bool wxDocManager::FlushDoc(wxDocument *WXUNUSED(doc))
1395 {
1396     return false;
1397 }
1398
1399 wxDocument *wxDocManager::GetCurrentDocument() const
1400 {
1401     wxView *view = GetCurrentView();
1402     if (view)
1403         return view->GetDocument();
1404     else
1405         return (wxDocument *) NULL;
1406 }
1407
1408 // Make a default document name
1409 bool wxDocManager::MakeDefaultName(wxString& name)
1410 {
1411     name.Printf(_("unnamed%d"), m_defaultDocumentNameCounter);
1412     m_defaultDocumentNameCounter++;
1413
1414     return true;
1415 }
1416
1417 // Make a frame title (override this to do something different)
1418 // If docName is empty, a document is not currently active.
1419 wxString wxDocManager::MakeFrameTitle(wxDocument* doc)
1420 {
1421     wxString appName = wxTheApp->GetAppName();
1422     wxString title;
1423     if (!doc)
1424         title = appName;
1425     else
1426     {
1427         wxString docName;
1428         doc->GetPrintableName(docName);
1429         title = docName + wxString(_(" - ")) + appName;
1430     }
1431     return title;
1432 }
1433
1434
1435 // Not yet implemented
1436 wxDocTemplate *wxDocManager::MatchTemplate(const wxString& WXUNUSED(path))
1437 {
1438     return (wxDocTemplate *) NULL;
1439 }
1440
1441 // File history management
1442 void wxDocManager::AddFileToHistory(const wxString& file)
1443 {
1444     if (m_fileHistory)
1445         m_fileHistory->AddFileToHistory(file);
1446 }
1447
1448 void wxDocManager::RemoveFileFromHistory(size_t i)
1449 {
1450     if (m_fileHistory)
1451         m_fileHistory->RemoveFileFromHistory(i);
1452 }
1453
1454 wxString wxDocManager::GetHistoryFile(size_t i) const
1455 {
1456     wxString histFile;
1457
1458     if (m_fileHistory)
1459         histFile = m_fileHistory->GetHistoryFile(i);
1460
1461     return histFile;
1462 }
1463
1464 void wxDocManager::FileHistoryUseMenu(wxMenu *menu)
1465 {
1466     if (m_fileHistory)
1467         m_fileHistory->UseMenu(menu);
1468 }
1469
1470 void wxDocManager::FileHistoryRemoveMenu(wxMenu *menu)
1471 {
1472     if (m_fileHistory)
1473         m_fileHistory->RemoveMenu(menu);
1474 }
1475
1476 #if wxUSE_CONFIG
1477 void wxDocManager::FileHistoryLoad(wxConfigBase& config)
1478 {
1479     if (m_fileHistory)
1480         m_fileHistory->Load(config);
1481 }
1482
1483 void wxDocManager::FileHistorySave(wxConfigBase& config)
1484 {
1485     if (m_fileHistory)
1486         m_fileHistory->Save(config);
1487 }
1488 #endif
1489
1490 void wxDocManager::FileHistoryAddFilesToMenu(wxMenu* menu)
1491 {
1492     if (m_fileHistory)
1493         m_fileHistory->AddFilesToMenu(menu);
1494 }
1495
1496 void wxDocManager::FileHistoryAddFilesToMenu()
1497 {
1498     if (m_fileHistory)
1499         m_fileHistory->AddFilesToMenu();
1500 }
1501
1502 size_t wxDocManager::GetHistoryFilesCount() const
1503 {
1504     return m_fileHistory ? m_fileHistory->GetCount() : 0;
1505 }
1506
1507
1508 // Find out the document template via matching in the document file format
1509 // against that of the template
1510 wxDocTemplate *wxDocManager::FindTemplateForPath(const wxString& path)
1511 {
1512     wxDocTemplate *theTemplate = (wxDocTemplate *) NULL;
1513
1514     // Find the template which this extension corresponds to
1515     for (size_t i = 0; i < m_templates.GetCount(); i++)
1516     {
1517         wxDocTemplate *temp = (wxDocTemplate *)m_templates.Item(i)->GetData();
1518         if ( temp->FileMatchesTemplate(path) )
1519         {
1520             theTemplate = temp;
1521             break;
1522         }
1523     }
1524     return theTemplate;
1525 }
1526
1527 // Try to get a more suitable parent frame than the top window,
1528 // for selection dialogs. Otherwise you may get an unexpected
1529 // window being activated when a dialog is shown.
1530 static wxWindow* wxFindSuitableParent()
1531 {
1532     wxWindow* parent = wxTheApp->GetTopWindow();
1533
1534     wxWindow* focusWindow = wxWindow::FindFocus();
1535     if (focusWindow)
1536     {
1537         while (focusWindow &&
1538                 !focusWindow->IsKindOf(CLASSINFO(wxDialog)) &&
1539                 !focusWindow->IsKindOf(CLASSINFO(wxFrame)))
1540
1541             focusWindow = focusWindow->GetParent();
1542
1543         if (focusWindow)
1544             parent = focusWindow;
1545     }
1546     return parent;
1547 }
1548
1549 // Prompts user to open a file, using file specs in templates.
1550 // Must extend the file selector dialog or implement own; OR
1551 // match the extension to the template extension.
1552
1553 wxDocTemplate *wxDocManager::SelectDocumentPath(wxDocTemplate **templates,
1554 #if defined(__WXMSW__) || defined(__WXGTK__) || defined(__WXMAC__)
1555                                                 int noTemplates,
1556 #else
1557                                                 int WXUNUSED(noTemplates),
1558 #endif
1559                                                 wxString& path,
1560                                                 long WXUNUSED(flags),
1561                                                 bool WXUNUSED(save))
1562 {
1563     // We can only have multiple filters in Windows and GTK
1564 #if defined(__WXMSW__) || defined(__WXGTK__) || defined(__WXMAC__)
1565     wxString descrBuf;
1566
1567     int i;
1568     for (i = 0; i < noTemplates; i++)
1569     {
1570         if (templates[i]->IsVisible())
1571         {
1572             // add a '|' to separate this filter from the previous one
1573             if ( !descrBuf.empty() )
1574                 descrBuf << wxT('|');
1575
1576             descrBuf << templates[i]->GetDescription()
1577                 << wxT(" (") << templates[i]->GetFileFilter() << wxT(") |")
1578                 << templates[i]->GetFileFilter();
1579         }
1580     }
1581 #else
1582     wxString descrBuf = wxT("*.*");
1583 #endif
1584
1585     int FilterIndex = -1;
1586
1587     wxWindow* parent = wxFindSuitableParent();
1588
1589     wxString pathTmp = wxFileSelectorEx(_("Select a file"),
1590                                         m_lastDirectory,
1591                                         wxEmptyString,
1592                                         &FilterIndex,
1593                                         descrBuf,
1594                                         0,
1595                                         parent);
1596
1597     wxDocTemplate *theTemplate = (wxDocTemplate *)NULL;
1598     if (!pathTmp.empty())
1599     {
1600         if (!wxFileExists(pathTmp))
1601         {
1602             wxString msgTitle;
1603             if (!wxTheApp->GetAppName().empty())
1604                 msgTitle = wxTheApp->GetAppName();
1605             else
1606                 msgTitle = wxString(_("File error"));
1607
1608             (void)wxMessageBox(_("Sorry, could not open this file."), msgTitle, wxOK | wxICON_EXCLAMATION,
1609                 parent);
1610
1611             path = wxEmptyString;
1612             return (wxDocTemplate *) NULL;
1613         }
1614         m_lastDirectory = wxPathOnly(pathTmp);
1615
1616         path = pathTmp;
1617
1618         // first choose the template using the extension, if this fails (i.e.
1619         // wxFileSelectorEx() didn't fill it), then use the path
1620         if ( FilterIndex != -1 )
1621             theTemplate = templates[FilterIndex];
1622         if ( !theTemplate )
1623             theTemplate = FindTemplateForPath(path);
1624         if ( !theTemplate )
1625         {
1626             // Since we do not add files with non-default extensions to the FileHistory this
1627             // can only happen if the application changes the allowed templates in runtime.
1628             (void)wxMessageBox(_("Sorry, the format for this file is unknown."),
1629                                 _("Open File"),
1630                                 wxOK | wxICON_EXCLAMATION, wxFindSuitableParent());
1631         }
1632     }
1633     else
1634     {
1635         path = wxEmptyString;
1636     }
1637
1638     return theTemplate;
1639 }
1640
1641 wxDocTemplate *wxDocManager::SelectDocumentType(wxDocTemplate **templates,
1642                                                 int noTemplates, bool sort)
1643 {
1644     wxArrayString strings;
1645     wxDocTemplate **data = new wxDocTemplate *[noTemplates];
1646     int i;
1647     int n = 0;
1648
1649     for (i = 0; i < noTemplates; i++)
1650     {
1651         if (templates[i]->IsVisible())
1652         {
1653             int j;
1654             bool want = true;
1655             for (j = 0; j < n; j++)
1656             {
1657                 //filter out NOT unique documents + view combinations
1658                 if ( templates[i]->m_docTypeName == data[j]->m_docTypeName &&
1659                      templates[i]->m_viewTypeName == data[j]->m_viewTypeName
1660                    )
1661                     want = false;
1662             }
1663
1664             if ( want )
1665             {
1666                 strings.Add(templates[i]->m_description);
1667
1668                 data[n] = templates[i];
1669                 n ++;
1670             }
1671         }
1672     }  // for
1673
1674     if (sort)
1675     {
1676         strings.Sort(); // ascending sort
1677         // Yes, this will be slow, but template lists
1678         // are typically short.
1679         int j;
1680         n = strings.Count();
1681         for (i = 0; i < n; i++)
1682         {
1683             for (j = 0; j < noTemplates; j++)
1684             {
1685                 if (strings[i] == templates[j]->m_description)
1686                     data[i] = templates[j];
1687             }
1688         }
1689     }
1690
1691     wxDocTemplate *theTemplate;
1692
1693     switch ( n )
1694     {
1695         case 0:
1696             // no visible templates, hence nothing to choose from
1697             theTemplate = NULL;
1698             break;
1699
1700         case 1:
1701             // don't propose the user to choose if he heas no choice
1702             theTemplate = data[0];
1703             break;
1704
1705         default:
1706             // propose the user to choose one of several
1707             theTemplate = (wxDocTemplate *)wxGetSingleChoiceData
1708                           (
1709                             _("Select a document template"),
1710                             _("Templates"),
1711                             strings,
1712                             (void **)data,
1713                             wxFindSuitableParent()
1714                           );
1715     }
1716
1717     delete[] data;
1718
1719     return theTemplate;
1720 }
1721
1722 wxDocTemplate *wxDocManager::SelectViewType(wxDocTemplate **templates,
1723                                             int noTemplates, bool sort)
1724 {
1725     wxArrayString strings;
1726     wxDocTemplate **data = new wxDocTemplate *[noTemplates];
1727     int i;
1728     int n = 0;
1729
1730     for (i = 0; i < noTemplates; i++)
1731     {
1732         wxDocTemplate *templ = templates[i];
1733         if ( templ->IsVisible() && !templ->GetViewName().empty() )
1734         {
1735             int j;
1736             bool want = true;
1737             for (j = 0; j < n; j++)
1738             {
1739                 //filter out NOT unique views
1740                 if ( templates[i]->m_viewTypeName == data[j]->m_viewTypeName )
1741                     want = false;
1742             }
1743
1744             if ( want )
1745             {
1746                 strings.Add(templ->m_viewTypeName);
1747                 data[n] = templ;
1748                 n ++;
1749             }
1750         }
1751     }
1752
1753     if (sort)
1754     {
1755         strings.Sort(); // ascending sort
1756         // Yes, this will be slow, but template lists
1757         // are typically short.
1758         int j;
1759         n = strings.Count();
1760         for (i = 0; i < n; i++)
1761         {
1762             for (j = 0; j < noTemplates; j++)
1763             {
1764                 if (strings[i] == templates[j]->m_viewTypeName)
1765                     data[i] = templates[j];
1766             }
1767         }
1768     }
1769
1770     wxDocTemplate *theTemplate;
1771
1772     // the same logic as above
1773     switch ( n )
1774     {
1775         case 0:
1776             theTemplate = (wxDocTemplate *)NULL;
1777             break;
1778
1779         case 1:
1780             theTemplate = data[0];
1781             break;
1782
1783         default:
1784             theTemplate = (wxDocTemplate *)wxGetSingleChoiceData
1785                           (
1786                             _("Select a document view"),
1787                             _("Views"),
1788                             strings,
1789                             (void **)data,
1790                             wxFindSuitableParent()
1791                           );
1792
1793     }
1794
1795     delete[] data;
1796     return theTemplate;
1797 }
1798
1799 void wxDocManager::AssociateTemplate(wxDocTemplate *temp)
1800 {
1801     if (!m_templates.Member(temp))
1802         m_templates.Append(temp);
1803 }
1804
1805 void wxDocManager::DisassociateTemplate(wxDocTemplate *temp)
1806 {
1807     m_templates.DeleteObject(temp);
1808 }
1809
1810 // Add and remove a document from the manager's list
1811 void wxDocManager::AddDocument(wxDocument *doc)
1812 {
1813     if (!m_docs.Member(doc))
1814         m_docs.Append(doc);
1815 }
1816
1817 void wxDocManager::RemoveDocument(wxDocument *doc)
1818 {
1819     m_docs.DeleteObject(doc);
1820 }
1821
1822 // Views or windows should inform the document manager
1823 // when a view is going in or out of focus
1824 void wxDocManager::ActivateView(wxView *view, bool activate)
1825 {
1826     if ( activate )
1827     {
1828         m_currentView = view;
1829     }
1830     else // deactivate
1831     {
1832         if ( m_currentView == view )
1833         {
1834             // don't keep stale pointer
1835             m_currentView = (wxView *) NULL;
1836         }
1837     }
1838 }
1839
1840 // ----------------------------------------------------------------------------
1841 // Default document child frame
1842 // ----------------------------------------------------------------------------
1843
1844 BEGIN_EVENT_TABLE(wxDocChildFrame, wxFrame)
1845     EVT_ACTIVATE(wxDocChildFrame::OnActivate)
1846     EVT_CLOSE(wxDocChildFrame::OnCloseWindow)
1847 END_EVENT_TABLE()
1848
1849 wxDocChildFrame::wxDocChildFrame(wxDocument *doc,
1850                                  wxView *view,
1851                                  wxFrame *frame,
1852                                  wxWindowID id,
1853                                  const wxString& title,
1854                                  const wxPoint& pos,
1855                                  const wxSize& size,
1856                                  long style,
1857                                  const wxString& name)
1858                : wxFrame(frame, id, title, pos, size, style, name)
1859 {
1860     m_childDocument = doc;
1861     m_childView = view;
1862     if (view)
1863         view->SetFrame(this);
1864 }
1865
1866 // Extend event processing to search the view's event table
1867 bool wxDocChildFrame::ProcessEvent(wxEvent& event)
1868 {
1869     if (m_childView)
1870         m_childView->Activate(true);
1871
1872     if ( !m_childView || ! m_childView->ProcessEvent(event) )
1873     {
1874         // Only hand up to the parent if it's a menu command
1875         if (!event.IsKindOf(CLASSINFO(wxCommandEvent)) || !GetParent() || !GetParent()->ProcessEvent(event))
1876             return wxEvtHandler::ProcessEvent(event);
1877         else
1878             return true;
1879     }
1880     else
1881         return true;
1882 }
1883
1884 void wxDocChildFrame::OnActivate(wxActivateEvent& event)
1885 {
1886     wxFrame::OnActivate(event);
1887
1888     if (m_childView)
1889         m_childView->Activate(event.GetActive());
1890 }
1891
1892 void wxDocChildFrame::OnCloseWindow(wxCloseEvent& event)
1893 {
1894     if (m_childView)
1895     {
1896         bool ans = event.CanVeto()
1897                     ? m_childView->Close(false) // false means don't delete associated window
1898                     : true; // Must delete.
1899
1900         if (ans)
1901         {
1902             m_childView->Activate(false);
1903             delete m_childView;
1904             m_childView = (wxView *) NULL;
1905             m_childDocument = (wxDocument *) NULL;
1906
1907             this->Destroy();
1908         }
1909         else
1910             event.Veto();
1911     }
1912     else
1913         event.Veto();
1914 }
1915
1916 // ----------------------------------------------------------------------------
1917 // Default parent frame
1918 // ----------------------------------------------------------------------------
1919
1920 BEGIN_EVENT_TABLE(wxDocParentFrame, wxFrame)
1921     EVT_MENU(wxID_EXIT, wxDocParentFrame::OnExit)
1922     EVT_MENU_RANGE(wxID_FILE1, wxID_FILE9, wxDocParentFrame::OnMRUFile)
1923     EVT_CLOSE(wxDocParentFrame::OnCloseWindow)
1924 END_EVENT_TABLE()
1925
1926 wxDocParentFrame::wxDocParentFrame()
1927 {
1928     m_docManager = NULL;
1929 }
1930
1931 wxDocParentFrame::wxDocParentFrame(wxDocManager *manager,
1932                                    wxFrame *frame,
1933                                    wxWindowID id,
1934                                    const wxString& title,
1935                                    const wxPoint& pos,
1936                                    const wxSize& size,
1937                                    long style,
1938                                    const wxString& name)
1939                 : wxFrame(frame, id, title, pos, size, style, name)
1940 {
1941     m_docManager = manager;
1942 }
1943
1944 bool wxDocParentFrame::Create(wxDocManager *manager,
1945                               wxFrame *frame,
1946                               wxWindowID id,
1947                               const wxString& title,
1948                               const wxPoint& pos,
1949                               const wxSize& size,
1950                               long style,
1951                               const wxString& name)
1952 {
1953     m_docManager = manager;
1954     return base_type::Create(frame, id, title, pos, size, style, name);
1955 }
1956
1957 void wxDocParentFrame::OnExit(wxCommandEvent& WXUNUSED(event))
1958 {
1959     Close();
1960 }
1961
1962 void wxDocParentFrame::OnMRUFile(wxCommandEvent& event)
1963 {
1964     int n = event.GetId() - wxID_FILE1;  // the index in MRU list
1965     wxString filename(m_docManager->GetHistoryFile(n));
1966     if ( !filename.empty() )
1967     {
1968         // verify that the file exists before doing anything else
1969         if ( wxFile::Exists(filename) )
1970         {
1971             // try to open it
1972             if (!m_docManager->CreateDocument(filename, wxDOC_SILENT))
1973             {
1974                 // remove the file from the MRU list. The user should already be notified.
1975                 m_docManager->RemoveFileFromHistory(n);
1976
1977                 wxLogError(_("The file '%s' couldn't be opened.\nIt has been removed from the most recently used files list."),
1978                        filename.c_str());
1979             }
1980         }
1981         else
1982         {
1983             // remove the bogus filename from the MRU list and notify the user
1984             // about it
1985             m_docManager->RemoveFileFromHistory(n);
1986
1987             wxLogError(_("The file '%s' doesn't exist and couldn't be opened.\nIt has been removed from the most recently used files list."),
1988                        filename.c_str());
1989         }
1990     }
1991 }
1992
1993 // Extend event processing to search the view's event table
1994 bool wxDocParentFrame::ProcessEvent(wxEvent& event)
1995 {
1996     // Try the document manager, then do default processing
1997     if (!m_docManager || !m_docManager->ProcessEvent(event))
1998         return wxEvtHandler::ProcessEvent(event);
1999     else
2000         return true;
2001 }
2002
2003 // Define the behaviour for the frame closing
2004 // - must delete all frames except for the main one.
2005 void wxDocParentFrame::OnCloseWindow(wxCloseEvent& event)
2006 {
2007     if (m_docManager->Clear(!event.CanVeto()))
2008     {
2009         this->Destroy();
2010     }
2011     else
2012         event.Veto();
2013 }
2014
2015 #if wxUSE_PRINTING_ARCHITECTURE
2016
2017 wxDocPrintout::wxDocPrintout(wxView *view, const wxString& title)
2018              : wxPrintout(title)
2019 {
2020     m_printoutView = view;
2021 }
2022
2023 bool wxDocPrintout::OnPrintPage(int WXUNUSED(page))
2024 {
2025     wxDC *dc = GetDC();
2026
2027     // Get the logical pixels per inch of screen and printer
2028     int ppiScreenX, ppiScreenY;
2029     GetPPIScreen(&ppiScreenX, &ppiScreenY);
2030     wxUnusedVar(ppiScreenY);
2031     int ppiPrinterX, ppiPrinterY;
2032     GetPPIPrinter(&ppiPrinterX, &ppiPrinterY);
2033     wxUnusedVar(ppiPrinterY);
2034
2035     // This scales the DC so that the printout roughly represents the
2036     // the screen scaling. The text point size _should_ be the right size
2037     // but in fact is too small for some reason. This is a detail that will
2038     // need to be addressed at some point but can be fudged for the
2039     // moment.
2040     float scale = (float)((float)ppiPrinterX/(float)ppiScreenX);
2041
2042     // Now we have to check in case our real page size is reduced
2043     // (e.g. because we're drawing to a print preview memory DC)
2044     int pageWidth, pageHeight;
2045     int w, h;
2046     dc->GetSize(&w, &h);
2047     GetPageSizePixels(&pageWidth, &pageHeight);
2048     wxUnusedVar(pageHeight);
2049
2050     // If printer pageWidth == current DC width, then this doesn't
2051     // change. But w might be the preview bitmap width, so scale down.
2052     float overallScale = scale * (float)(w/(float)pageWidth);
2053     dc->SetUserScale(overallScale, overallScale);
2054
2055     if (m_printoutView)
2056     {
2057         m_printoutView->OnDraw(dc);
2058     }
2059     return true;
2060 }
2061
2062 bool wxDocPrintout::HasPage(int pageNum)
2063 {
2064     return (pageNum == 1);
2065 }
2066
2067 bool wxDocPrintout::OnBeginDocument(int startPage, int endPage)
2068 {
2069     if (!wxPrintout::OnBeginDocument(startPage, endPage))
2070         return false;
2071
2072     return true;
2073 }
2074
2075 void wxDocPrintout::GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, int *selPageTo)
2076 {
2077     *minPage = 1;
2078     *maxPage = 1;
2079     *selPageFrom = 1;
2080     *selPageTo = 1;
2081 }
2082
2083 #endif // wxUSE_PRINTING_ARCHITECTURE
2084
2085 // ----------------------------------------------------------------------------
2086 // File history processor
2087 // ----------------------------------------------------------------------------
2088
2089 static inline wxChar* MYcopystring(const wxString& s)
2090 {
2091     wxChar* copy = new wxChar[s.length() + 1];
2092     return wxStrcpy(copy, s.c_str());
2093 }
2094
2095 static inline wxChar* MYcopystring(const wxChar* s)
2096 {
2097     wxChar* copy = new wxChar[wxStrlen(s) + 1];
2098     return wxStrcpy(copy, s);
2099 }
2100
2101 wxFileHistory::wxFileHistory(size_t maxFiles, wxWindowID idBase)
2102 {
2103     m_fileMaxFiles = maxFiles;
2104     m_idBase = idBase;
2105     m_fileHistoryN = 0;
2106     m_fileHistory = new wxChar *[m_fileMaxFiles];
2107 }
2108
2109 wxFileHistory::~wxFileHistory()
2110 {
2111     size_t i;
2112     for (i = 0; i < m_fileHistoryN; i++)
2113         delete[] m_fileHistory[i];
2114     delete[] m_fileHistory;
2115 }
2116
2117 // File history management
2118 void wxFileHistory::AddFileToHistory(const wxString& file)
2119 {
2120     size_t i;
2121
2122     // Check we don't already have this file
2123     for (i = 0; i < m_fileHistoryN; i++)
2124     {
2125 #if defined( __WXMSW__ ) // Add any other OSes with case insensitive file names
2126         wxString testString;
2127         if ( m_fileHistory[i] )
2128             testString = m_fileHistory[i];
2129         if ( m_fileHistory[i] && ( file.Lower() == testString.Lower() ) )
2130 #else
2131         if ( m_fileHistory[i] && ( file == m_fileHistory[i] ) )
2132 #endif
2133         {
2134             // we do have it, move it to the top of the history
2135             RemoveFileFromHistory (i);
2136             AddFileToHistory (file);
2137             return;
2138         }
2139     }
2140
2141     // if we already have a full history, delete the one at the end
2142     if ( m_fileMaxFiles == m_fileHistoryN )
2143     {
2144         RemoveFileFromHistory (m_fileHistoryN - 1);
2145         AddFileToHistory (file);
2146         return;
2147     }
2148
2149     // Add to the project file history:
2150     // Move existing files (if any) down so we can insert file at beginning.
2151     if (m_fileHistoryN < m_fileMaxFiles)
2152     {
2153         wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2154         while (node)
2155         {
2156             wxMenu* menu = (wxMenu*) node->GetData();
2157             if ( m_fileHistoryN == 0 && menu->GetMenuItemCount() )
2158             {
2159                 menu->AppendSeparator();
2160             }
2161             menu->Append(m_idBase+m_fileHistoryN, _("[EMPTY]"));
2162             node = node->GetNext();
2163         }
2164         m_fileHistoryN ++;
2165     }
2166     // Shuffle filenames down
2167     for (i = (m_fileHistoryN-1); i > 0; i--)
2168     {
2169         m_fileHistory[i] = m_fileHistory[i-1];
2170     }
2171     m_fileHistory[0] = MYcopystring(file);
2172
2173     // this is the directory of the last opened file
2174     wxString pathCurrent;
2175     wxSplitPath( m_fileHistory[0], &pathCurrent, NULL, NULL );
2176     for (i = 0; i < m_fileHistoryN; i++)
2177     {
2178         if ( m_fileHistory[i] )
2179         {
2180             // if in same directory just show the filename; otherwise the full
2181             // path
2182             wxString pathInMenu, path, filename, ext;
2183             wxSplitPath( m_fileHistory[i], &path, &filename, &ext );
2184             if ( path == pathCurrent )
2185             {
2186                 pathInMenu = filename;
2187                 if ( !ext.empty() )
2188                     pathInMenu = pathInMenu + wxFILE_SEP_EXT + ext;
2189             }
2190             else
2191             {
2192                 // absolute path; could also set relative path
2193                 pathInMenu = m_fileHistory[i];
2194             }
2195
2196             // we need to quote '&' characters which are used for mnemonics
2197             pathInMenu.Replace(_T("&"), _T("&&"));
2198             wxString buf;
2199             buf.Printf(s_MRUEntryFormat, i + 1, pathInMenu.c_str());
2200             wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2201             while (node)
2202             {
2203                 wxMenu* menu = (wxMenu*) node->GetData();
2204                 menu->SetLabel(m_idBase + i, buf);
2205                 node = node->GetNext();
2206             }
2207         }
2208     }
2209 }
2210
2211 void wxFileHistory::RemoveFileFromHistory(size_t i)
2212 {
2213     wxCHECK_RET( i < m_fileHistoryN,
2214                  wxT("invalid index in wxFileHistory::RemoveFileFromHistory") );
2215
2216     // delete the element from the array (could use memmove() too...)
2217     delete [] m_fileHistory[i];
2218
2219     size_t j;
2220     for ( j = i; j < m_fileHistoryN - 1; j++ )
2221     {
2222         m_fileHistory[j] = m_fileHistory[j + 1];
2223     }
2224
2225     wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2226     while ( node )
2227     {
2228         wxMenu* menu = (wxMenu*) node->GetData();
2229
2230         // shuffle filenames up
2231         wxString buf;
2232         for ( j = i; j < m_fileHistoryN - 1; j++ )
2233         {
2234             buf.Printf(s_MRUEntryFormat, j + 1, m_fileHistory[j]);
2235             menu->SetLabel(m_idBase + j, buf);
2236         }
2237
2238         node = node->GetNext();
2239
2240         // delete the last menu item which is unused now
2241         wxWindowID lastItemId = m_idBase + wx_truncate_cast(wxWindowID, m_fileHistoryN) - 1;
2242         if (menu->FindItem(lastItemId))
2243         {
2244             menu->Delete(lastItemId);
2245         }
2246
2247         // delete the last separator too if no more files are left
2248         if ( m_fileHistoryN == 1 )
2249         {
2250             wxMenuItemList::compatibility_iterator nodeLast = menu->GetMenuItems().GetLast();
2251             if ( nodeLast )
2252             {
2253                 wxMenuItem *menuItem = nodeLast->GetData();
2254                 if ( menuItem->IsSeparator() )
2255                 {
2256                     menu->Delete(menuItem);
2257                 }
2258                 //else: should we search backwards for the last separator?
2259             }
2260             //else: menu is empty somehow
2261         }
2262     }
2263
2264     m_fileHistoryN--;
2265 }
2266
2267 wxString wxFileHistory::GetHistoryFile(size_t i) const
2268 {
2269     wxString s;
2270     if ( i < m_fileHistoryN )
2271     {
2272         s = m_fileHistory[i];
2273     }
2274     else
2275     {
2276         wxFAIL_MSG( wxT("bad index in wxFileHistory::GetHistoryFile") );
2277     }
2278
2279     return s;
2280 }
2281
2282 void wxFileHistory::UseMenu(wxMenu *menu)
2283 {
2284     if (!m_fileMenus.Member(menu))
2285         m_fileMenus.Append(menu);
2286 }
2287
2288 void wxFileHistory::RemoveMenu(wxMenu *menu)
2289 {
2290     m_fileMenus.DeleteObject(menu);
2291 }
2292
2293 #if wxUSE_CONFIG
2294 void wxFileHistory::Load(wxConfigBase& config)
2295 {
2296     m_fileHistoryN = 0;
2297     wxString buf;
2298     buf.Printf(wxT("file%d"), (int)m_fileHistoryN+1);
2299     wxString historyFile;
2300     while ((m_fileHistoryN < m_fileMaxFiles) && config.Read(buf, &historyFile) && (!historyFile.empty()))
2301     {
2302         m_fileHistory[m_fileHistoryN] = MYcopystring((const wxChar*) historyFile);
2303         m_fileHistoryN ++;
2304         buf.Printf(wxT("file%d"), (int)m_fileHistoryN+1);
2305         historyFile = wxEmptyString;
2306     }
2307     AddFilesToMenu();
2308 }
2309
2310 void wxFileHistory::Save(wxConfigBase& config)
2311 {
2312     size_t i;
2313     for (i = 0; i < m_fileMaxFiles; i++)
2314     {
2315         wxString buf;
2316         buf.Printf(wxT("file%d"), (int)i+1);
2317         if (i < m_fileHistoryN)
2318             config.Write(buf, wxString(m_fileHistory[i]));
2319         else
2320             config.Write(buf, wxEmptyString);
2321     }
2322 }
2323 #endif // wxUSE_CONFIG
2324
2325 void wxFileHistory::AddFilesToMenu()
2326 {
2327     if (m_fileHistoryN > 0)
2328     {
2329         wxList::compatibility_iterator node = m_fileMenus.GetFirst();
2330         while (node)
2331         {
2332             wxMenu* menu = (wxMenu*) node->GetData();
2333             if (menu->GetMenuItemCount())
2334             {
2335                 menu->AppendSeparator();
2336             }
2337
2338             size_t i;
2339             for (i = 0; i < m_fileHistoryN; i++)
2340             {
2341                 if (m_fileHistory[i])
2342                 {
2343                     wxString buf;
2344                     buf.Printf(s_MRUEntryFormat, i+1, m_fileHistory[i]);
2345                     menu->Append(m_idBase+i, buf);
2346                 }
2347             }
2348             node = node->GetNext();
2349         }
2350     }
2351 }
2352
2353 void wxFileHistory::AddFilesToMenu(wxMenu* menu)
2354 {
2355     if (m_fileHistoryN > 0)
2356     {
2357         if (menu->GetMenuItemCount())
2358         {
2359             menu->AppendSeparator();
2360         }
2361
2362         size_t i;
2363         for (i = 0; i < m_fileHistoryN; i++)
2364         {
2365             if (m_fileHistory[i])
2366             {
2367                 wxString buf;
2368                 buf.Printf(s_MRUEntryFormat, i+1, m_fileHistory[i]);
2369                 menu->Append(m_idBase+i, buf);
2370             }
2371         }
2372     }
2373 }
2374
2375 // ----------------------------------------------------------------------------
2376 // Permits compatibility with existing file formats and functions that
2377 // manipulate files directly
2378 // ----------------------------------------------------------------------------
2379
2380 #if wxUSE_STD_IOSTREAM
2381
2382 bool wxTransferFileToStream(const wxString& filename, wxSTD ostream& stream)
2383 {
2384     wxFFile file(filename, _T("rb"));
2385     if ( !file.IsOpened() )
2386         return false;
2387
2388     char buf[4096];
2389
2390     size_t nRead;
2391     do
2392     {
2393         nRead = file.Read(buf, WXSIZEOF(buf));
2394         if ( file.Error() )
2395             return false;
2396
2397         stream.write(buf, nRead);
2398         if ( !stream )
2399             return false;
2400     }
2401     while ( !file.Eof() );
2402
2403     return true;
2404 }
2405
2406 bool wxTransferStreamToFile(wxSTD istream& stream, const wxString& filename)
2407 {
2408     wxFFile file(filename, _T("wb"));
2409     if ( !file.IsOpened() )
2410         return false;
2411
2412     char buf[4096];
2413     do
2414     {
2415         stream.read(buf, WXSIZEOF(buf));
2416         if ( !stream.bad() ) // fail may be set on EOF, don't use operator!()
2417         {
2418             if ( !file.Write(buf, stream.gcount()) )
2419                 return false;
2420         }
2421     }
2422     while ( !stream.eof() );
2423
2424     return true;
2425 }
2426
2427 #else // !wxUSE_STD_IOSTREAM
2428
2429 bool wxTransferFileToStream(const wxString& filename, wxOutputStream& stream)
2430 {
2431     wxFFile file(filename, _T("rb"));
2432     if ( !file.IsOpened() )
2433         return false;
2434
2435     char buf[4096];
2436
2437     size_t nRead;
2438     do
2439     {
2440         nRead = file.Read(buf, WXSIZEOF(buf));
2441         if ( file.Error() )
2442             return false;
2443
2444         stream.Write(buf, nRead);
2445         if ( !stream )
2446             return false;
2447     }
2448     while ( !file.Eof() );
2449
2450     return true;
2451 }
2452
2453 bool wxTransferStreamToFile(wxInputStream& stream, const wxString& filename)
2454 {
2455     wxFFile file(filename, _T("wb"));
2456     if ( !file.IsOpened() )
2457         return false;
2458
2459     char buf[4096];
2460     do
2461     {
2462         stream.Read(buf, WXSIZEOF(buf));
2463
2464         const size_t nRead = stream.LastRead();
2465         if ( !nRead || !file.Write(buf, nRead) )
2466             return false;
2467     }
2468     while ( !stream.Eof() );
2469
2470     return true;
2471 }
2472
2473 #endif // wxUSE_STD_IOSTREAM/!wxUSE_STD_IOSTREAM
2474
2475 #endif // wxUSE_DOC_VIEW_ARCHITECTURE