src/common/docview.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        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 and Markus Holzem
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "docview.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28   #pragma hdrstop
  29 #endif
  30
  31 #if wxUSE_DOC_VIEW_ARCHITECTURE
  32
  33 #ifndef WX_PRECOMP
  34     #include "wx/string.h"
  35     #include "wx/utils.h"
  36     #include "wx/app.h"
  37     #include "wx/dc.h"
  38     #include "wx/dialog.h"
  39     #include "wx/menu.h"
  40     #include "wx/list.h"
  41     #include "wx/filedlg.h"
  42     #include "wx/intl.h"
  43 #endif
  44
  45
  46 #ifdef __WXGTK__
  47     #include "wx/mdi.h"
  48 #endif
  49
  50 #if wxUSE_PRINTING_ARCHITECTURE
  51   #include "wx/prntbase.h"
  52   #include "wx/printdlg.h"
  53 #endif
  54
  55 #include "wx/msgdlg.h"
  56 #include "wx/choicdlg.h"
  57 #include "wx/docview.h"
  58 #include "wx/confbase.h"
  59
  60 #include <stdio.h>
  61 #include <string.h>
  62
  63 #if wxUSE_STD_IOSTREAM
  64   #include "wx/ioswrap.h"
  65   #if wxUSE_IOSTREAMH
  66     #include <fstream.h>
  67   #else
  68     #include <fstream>
  69   #endif
  70 #else
  71   #include "wx/wfstream.h"
  72 #endif
  73
  74 // ----------------------------------------------------------------------------
  75 // wxWindows macros
  76 // ----------------------------------------------------------------------------
  77
  78 #if !USE_SHARED_LIBRARY
  79     IMPLEMENT_ABSTRACT_CLASS(wxDocument, wxEvtHandler)
  80     IMPLEMENT_ABSTRACT_CLASS(wxView, wxEvtHandler)
  81     IMPLEMENT_ABSTRACT_CLASS(wxDocTemplate, wxObject)
  82     IMPLEMENT_DYNAMIC_CLASS(wxDocManager, wxEvtHandler)
  83     IMPLEMENT_CLASS(wxDocChildFrame, wxFrame)
  84     IMPLEMENT_CLASS(wxDocParentFrame, wxFrame)
  85
  86     #if wxUSE_PRINTING_ARCHITECTURE
  87         IMPLEMENT_DYNAMIC_CLASS(wxDocPrintout, wxPrintout)
  88     #endif
  89
  90     IMPLEMENT_CLASS(wxCommand, wxObject)
  91     IMPLEMENT_DYNAMIC_CLASS(wxCommandProcessor, wxObject)
  92     IMPLEMENT_DYNAMIC_CLASS(wxFileHistory, wxObject)
  93 #endif
  94
  95 // ----------------------------------------------------------------------------
  96 // function prototypes
  97 // ----------------------------------------------------------------------------
  98
  99 static inline wxString FindExtension(const wxChar *path);
 100
 101 // ============================================================================
 102 // implementation
 103 // ============================================================================
 104
 105 // ----------------------------------------------------------------------------
 106 // local functions
 107 // ----------------------------------------------------------------------------
 108
 109 static wxString FindExtension(const wxChar *path)
 110 {
 111     wxString ext;
 112     wxSplitPath(path, NULL, NULL, &ext);
 113
 114     // VZ: extensions are considered not case sensitive - is this really a good
 115     //     idea?
 116     return ext.MakeLower();
 117 }
 118
 119 // ----------------------------------------------------------------------------
 120 // Definition of wxDocument
 121 // ----------------------------------------------------------------------------
 122
 123 wxDocument::wxDocument(wxDocument *parent)
 124 {
 125     m_documentModified = FALSE;
 126     m_documentParent = parent;
 127     m_documentTemplate = (wxDocTemplate *) NULL;
 128     m_savedYet = FALSE;
 129 }
 130
 131 bool wxDocument::DeleteContents()
 132 {
 133     return TRUE;
 134 }
 135
 136 wxDocument::~wxDocument()
 137 {
 138     DeleteContents();
 139
 140     if (m_commandProcessor)
 141         delete m_commandProcessor;
 142
 143     GetDocumentManager()->RemoveDocument(this);
 144
 145     // Not safe to do here, since it'll invoke virtual view functions
 146     // expecting to see valid derived objects: and by the time we get here,
 147     // we've called destructors higher up.
 148     //DeleteAllViews();
 149 }
 150
 151 bool wxDocument::Close()
 152 {
 153     if (OnSaveModified())
 154         return OnCloseDocument();
 155     else
 156         return FALSE;
 157 }
 158
 159 bool wxDocument::OnCloseDocument()
 160 {
 161     DeleteContents();
 162     Modify(FALSE);
 163     return TRUE;
 164 }
 165
 166 // Note that this implicitly deletes the document when the last view is
 167 // deleted.
 168 bool wxDocument::DeleteAllViews()
 169 {
 170     wxNode *node = m_documentViews.First();
 171     while (node)
 172     {
 173         wxView *view = (wxView *)node->Data();
 174         if (!view->Close())
 175             return FALSE;
 176
 177         wxNode *next = node->Next();
 178
 179         delete view; // Deletes node implicitly
 180         node = next;
 181     }
 182     return TRUE;
 183 }
 184
 185 wxView *wxDocument::GetFirstView() const
 186 {
 187     if (m_documentViews.Number() == 0)
 188         return (wxView *) NULL;
 189     return (wxView *)m_documentViews.First()->Data();
 190 }
 191
 192 wxDocManager *wxDocument::GetDocumentManager() const
 193 {
 194     return m_documentTemplate->GetDocumentManager();
 195 }
 196
 197 bool wxDocument::OnNewDocument()
 198 {
 199     if (!OnSaveModified())
 200         return FALSE;
 201
 202     if (OnCloseDocument()==FALSE) return FALSE;
 203     DeleteContents();
 204     Modify(FALSE);
 205     SetDocumentSaved(FALSE);
 206
 207     wxString name;
 208     GetDocumentManager()->MakeDefaultName(name);
 209     SetTitle(name);
 210     SetFilename(name, TRUE);
 211
 212     return TRUE;
 213 }
 214
 215 bool wxDocument::Save()
 216 {
 217     bool ret = FALSE;
 218
 219     if (!IsModified()) return TRUE;
 220     if (m_documentFile == _T("") || !m_savedYet)
 221         ret = SaveAs();
 222     else
 223         ret = OnSaveDocument(m_documentFile);
 224     if ( ret )
 225         SetDocumentSaved(TRUE);
 226     return ret;
 227 }
 228
 229 bool wxDocument::SaveAs()
 230 {
 231     wxDocTemplate *docTemplate = GetDocumentTemplate();
 232     if (!docTemplate)
 233         return FALSE;
 234
 235     wxString tmp = wxFileSelector(_("Save as"),
 236             docTemplate->GetDirectory(),
 237             GetFilename(),
 238             docTemplate->GetDefaultExtension(),
 239             docTemplate->GetFileFilter(),
 240             wxSAVE | wxOVERWRITE_PROMPT,
 241             GetDocumentWindow());
 242
 243     if (tmp.IsEmpty())
 244         return FALSE;
 245
 246     wxString fileName(tmp);
 247     wxString path, name, ext;
 248     wxSplitPath(fileName, & path, & name, & ext);
 249
 250     if (ext.IsEmpty() || ext == _T(""))
 251     {
 252         fileName += ".";
 253         fileName += docTemplate->GetDefaultExtension();
 254     }
 255
 256     SetFilename(fileName);
 257     SetTitle(wxFileNameFromPath(fileName));
 258
 259     GetDocumentManager()->AddFileToHistory(fileName);
 260
 261     // Notify the views that the filename has changed
 262     wxNode *node = m_documentViews.First();
 263     while (node)
 264     {
 265         wxView *view = (wxView *)node->Data();
 266         view->OnChangeFilename();
 267         node = node->Next();
 268     }
 269
 270     return OnSaveDocument(m_documentFile);
 271 }
 272
 273 bool wxDocument::OnSaveDocument(const wxString& file)
 274 {
 275     if ( !file )
 276         return FALSE;
 277
 278     wxString msgTitle;
 279     if (wxTheApp->GetAppName() != _T(""))
 280         msgTitle = wxTheApp->GetAppName();
 281     else
 282         msgTitle = wxString(_("File error"));
 283
 284 #if wxUSE_STD_IOSTREAM
 285     ofstream store(FNSTRINGCAST file.fn_str());
 286     if (store.fail() || store.bad())
 287 #else
 288     wxFileOutputStream store(FNSTRINGCAST file.fn_str());
 289     if (store.LastError() != 0)
 290 #endif
 291     {
 292         (void)wxMessageBox(_("Sorry, could not open this file for saving."), msgTitle, wxOK | wxICON_EXCLAMATION,
 293                            GetDocumentWindow());
 294         // Saving error
 295         return FALSE;
 296     }
 297     if (!SaveObject(store))
 298     {
 299         (void)wxMessageBox(_("Sorry, could not save this file."), msgTitle, wxOK | wxICON_EXCLAMATION,
 300                            GetDocumentWindow());
 301         // Saving error
 302         return FALSE;
 303     }
 304     Modify(FALSE);
 305     SetFilename(file);
 306     return TRUE;
 307 }
 308
 309 bool wxDocument::OnOpenDocument(const wxString& file)
 310 {
 311     if (!OnSaveModified())
 312         return FALSE;
 313
 314     wxString msgTitle;
 315     if (wxTheApp->GetAppName() != _T(""))
 316         msgTitle = wxTheApp->GetAppName();
 317     else
 318         msgTitle = wxString(_("File error"));
 319
 320 #if wxUSE_STD_IOSTREAM
 321     ifstream store(FNSTRINGCAST file.fn_str());
 322     if (store.fail() || store.bad())
 323 #else
 324     wxFileInputStream store(FNSTRINGCAST file.fn_str());
 325     if (store.LastError() != 0)
 326 #endif
 327     {
 328         (void)wxMessageBox(_("Sorry, could not open this file."), msgTitle, wxOK|wxICON_EXCLAMATION,
 329                            GetDocumentWindow());
 330         return FALSE;
 331     }
 332     if (!LoadObject(store))
 333     {
 334         (void)wxMessageBox(_("Sorry, could not open this file."), msgTitle, wxOK|wxICON_EXCLAMATION,
 335                            GetDocumentWindow());
 336         return FALSE;
 337     }
 338     SetFilename(file, TRUE);
 339     Modify(FALSE);
 340     m_savedYet = TRUE;
 341
 342     UpdateAllViews();
 343
 344     return TRUE;
 345 }
 346
 347 #if wxUSE_STD_IOSTREAM
 348 istream& wxDocument::LoadObject(istream& stream)
 349 #else
 350 wxInputStream& wxDocument::LoadObject(wxInputStream& stream)
 351 #endif
 352 {
 353     return stream;
 354 }
 355
 356 #if wxUSE_STD_IOSTREAM
 357 ostream& wxDocument::SaveObject(ostream& stream)
 358 #else
 359 wxOutputStream& wxDocument::SaveObject(wxOutputStream& stream)
 360 #endif
 361 {
 362     return stream;
 363 }
 364
 365 bool wxDocument::Revert()
 366 {
 367     return FALSE;
 368 }
 369
 370
 371 // Get title, or filename if no title, else unnamed
 372 bool wxDocument::GetPrintableName(wxString& buf) const
 373 {
 374     if (m_documentTitle != _T(""))
 375     {
 376         buf = m_documentTitle;
 377         return TRUE;
 378     }
 379     else if (m_documentFile != _T(""))
 380     {
 381         buf = wxFileNameFromPath(m_documentFile);
 382         return TRUE;
 383     }
 384     else
 385     {
 386         buf = _("unnamed");
 387         return TRUE;
 388     }
 389 }
 390
 391 wxWindow *wxDocument::GetDocumentWindow() const
 392 {
 393     wxView *view = GetFirstView();
 394     if (view)
 395         return view->GetFrame();
 396     else
 397         return wxTheApp->GetTopWindow();
 398 }
 399
 400 wxCommandProcessor *wxDocument::OnCreateCommandProcessor()
 401 {
 402     return new wxCommandProcessor;
 403 }
 404
 405 // TRUE if safe to close
 406 bool wxDocument::OnSaveModified()
 407 {
 408     if (IsModified())
 409     {
 410         wxString title;
 411         GetPrintableName(title);
 412
 413         wxString msgTitle;
 414         if (wxTheApp->GetAppName() != _T(""))
 415             msgTitle = wxTheApp->GetAppName();
 416         else
 417             msgTitle = wxString(_("Warning"));
 418
 419         wxString prompt;
 420         prompt.Printf(_("Do you want to save changes to document %s?"),
 421                 (const wxChar *)title);
 422         int res = wxMessageBox(prompt, msgTitle,
 423                 wxYES_NO|wxCANCEL|wxICON_QUESTION,
 424                 GetDocumentWindow());
 425         if (res == wxNO)
 426         {
 427             Modify(FALSE);
 428             return TRUE;
 429         }
 430         else if (res == wxYES)
 431             return Save();
 432         else if (res == wxCANCEL)
 433             return FALSE;
 434     }
 435     return TRUE;
 436 }
 437
 438 bool wxDocument::Draw(wxDC& WXUNUSED(context))
 439 {
 440     return TRUE;
 441 }
 442
 443 bool wxDocument::AddView(wxView *view)
 444 {
 445     if (!m_documentViews.Member(view))
 446     {
 447         m_documentViews.Append(view);
 448         OnChangedViewList();
 449     }
 450     return TRUE;
 451 }
 452
 453 bool wxDocument::RemoveView(wxView *view)
 454 {
 455     (void)m_documentViews.DeleteObject(view);
 456     OnChangedViewList();
 457     return TRUE;
 458 }
 459
 460 bool wxDocument::OnCreate(const wxString& WXUNUSED(path), long flags)
 461 {
 462     if (GetDocumentTemplate()->CreateView(this, flags))
 463         return TRUE;
 464     else
 465         return FALSE;
 466 }
 467
 468 // Called after a view is added or removed.
 469 // The default implementation deletes the document if
 470 // there are no more views.
 471 void wxDocument::OnChangedViewList()
 472 {
 473     if (m_documentViews.Number() == 0)
 474     {
 475         if (OnSaveModified())
 476         {
 477             delete this;
 478         }
 479     }
 480 }
 481
 482 void wxDocument::UpdateAllViews(wxView *sender, wxObject *hint)
 483 {
 484     wxNode *node = m_documentViews.First();
 485     while (node)
 486     {
 487         wxView *view = (wxView *)node->Data();
 488         view->OnUpdate(sender, hint);
 489         node = node->Next();
 490     }
 491 }
 492
 493 void wxDocument::SetFilename(const wxString& filename, bool notifyViews)
 494 {
 495     m_documentFile = filename;
 496     if ( notifyViews )
 497     {
 498         // Notify the views that the filename has changed
 499         wxNode *node = m_documentViews.First();
 500         while (node)
 501         {
 502             wxView *view = (wxView *)node->Data();
 503             view->OnChangeFilename();
 504             node = node->Next();
 505         }
 506     }
 507 }
 508
 509 // ----------------------------------------------------------------------------
 510 // Document view
 511 // ----------------------------------------------------------------------------
 512
 513 wxView::wxView()
 514 {
 515     //  SetDocument(doc);
 516     m_viewDocument = (wxDocument*) NULL;
 517
 518     m_viewTypeName = "";
 519     m_viewFrame = (wxFrame *) NULL;
 520 }
 521
 522 wxView::~wxView()
 523 {
 524     GetDocumentManager()->ActivateView(this, FALSE, TRUE);
 525     m_viewDocument->RemoveView(this);
 526 }
 527
 528 // Extend event processing to search the document's event table
 529 bool wxView::ProcessEvent(wxEvent& event)
 530 {
 531     if ( !GetDocument() || !GetDocument()->ProcessEvent(event) )
 532         return wxEvtHandler::ProcessEvent(event);
 533     else
 534         return TRUE;
 535 }
 536
 537 void wxView::OnActivateView(bool WXUNUSED(activate), wxView *WXUNUSED(activeView), wxView *WXUNUSED(deactiveView))
 538 {
 539 }
 540
 541 void wxView::OnPrint(wxDC *dc, wxObject *WXUNUSED(info))
 542 {
 543     OnDraw(dc);
 544 }
 545
 546 void wxView::OnUpdate(wxView *WXUNUSED(sender), wxObject *WXUNUSED(hint))
 547 {
 548 }
 549
 550 void wxView::OnChangeFilename()
 551 {
 552     if (GetFrame() && GetDocument())
 553     {
 554         wxString name;
 555         GetDocument()->GetPrintableName(name);
 556
 557         GetFrame()->SetTitle(name);
 558     }
 559 }
 560
 561 void wxView::SetDocument(wxDocument *doc)
 562 {
 563     m_viewDocument = doc;
 564     if (doc)
 565         doc->AddView(this);
 566 }
 567
 568 bool wxView::Close(bool deleteWindow)
 569 {
 570     if (OnClose(deleteWindow))
 571         return TRUE;
 572     else
 573         return FALSE;
 574 }
 575
 576 void wxView::Activate(bool activate)
 577 {
 578     if (GetDocumentManager())
 579     {
 580         OnActivateView(activate, this, GetDocumentManager()->GetCurrentView());
 581         GetDocumentManager()->ActivateView(this, activate);
 582     }
 583 }
 584
 585 bool wxView::OnClose(bool WXUNUSED(deleteWindow))
 586 {
 587     return GetDocument() ? GetDocument()->Close() : TRUE;
 588 }
 589
 590 #if wxUSE_PRINTING_ARCHITECTURE
 591 wxPrintout *wxView::OnCreatePrintout()
 592 {
 593     return new wxDocPrintout(this);
 594 }
 595 #endif // wxUSE_PRINTING_ARCHITECTURE
 596
 597 // ----------------------------------------------------------------------------
 598 // wxDocTemplate
 599 // ----------------------------------------------------------------------------
 600
 601 wxDocTemplate::wxDocTemplate(wxDocManager *manager,
 602                              const wxString& descr,
 603                              const wxString& filter,
 604                              const wxString& dir,
 605                              const wxString& ext,
 606                              const wxString& docTypeName,
 607                              const wxString& viewTypeName,
 608                              wxClassInfo *docClassInfo,
 609                              wxClassInfo *viewClassInfo,
 610                              long flags)
 611 {
 612     m_documentManager = manager;
 613     m_description = descr;
 614     m_directory = dir;
 615     m_defaultExt = ext;
 616     m_fileFilter = filter;
 617     m_flags = flags;
 618     m_docTypeName = docTypeName;
 619     m_viewTypeName = viewTypeName;
 620     m_documentManager->AssociateTemplate(this);
 621
 622     m_docClassInfo = docClassInfo;
 623     m_viewClassInfo = viewClassInfo;
 624 }
 625
 626 wxDocTemplate::~wxDocTemplate()
 627 {
 628     m_documentManager->DisassociateTemplate(this);
 629 }
 630
 631 // Tries to dynamically construct an object of the right class.
 632 wxDocument *wxDocTemplate::CreateDocument(const wxString& path, long flags)
 633 {
 634     if (!m_docClassInfo)
 635         return (wxDocument *) NULL;
 636     wxDocument *doc = (wxDocument *)m_docClassInfo->CreateObject();
 637     doc->SetFilename(path);
 638     doc->SetDocumentTemplate(this);
 639     GetDocumentManager()->AddDocument(doc);
 640     doc->SetCommandProcessor(doc->OnCreateCommandProcessor());
 641
 642     if (doc->OnCreate(path, flags))
 643         return doc;
 644     else
 645     {
 646         delete doc;
 647         return (wxDocument *) NULL;
 648     }
 649 }
 650
 651 wxView *wxDocTemplate::CreateView(wxDocument *doc, long flags)
 652 {
 653     if (!m_viewClassInfo)
 654         return (wxView *) NULL;
 655     wxView *view = (wxView *)m_viewClassInfo->CreateObject();
 656     view->SetDocument(doc);
 657     if (view->OnCreate(doc, flags))
 658     {
 659         return view;
 660     }
 661     else
 662     {
 663         delete view;
 664         return (wxView *) NULL;
 665     }
 666 }
 667
 668 // The default (very primitive) format detection: check is the extension is
 669 // that of the template
 670 bool wxDocTemplate::FileMatchesTemplate(const wxString& path)
 671 {
 672     return GetDefaultExtension().IsSameAs(FindExtension(path));
 673 }
 674
 675 // ----------------------------------------------------------------------------
 676 // wxDocManager
 677 // ----------------------------------------------------------------------------
 678
 679 BEGIN_EVENT_TABLE(wxDocManager, wxEvtHandler)
 680     EVT_MENU(wxID_OPEN, wxDocManager::OnFileOpen)
 681     EVT_MENU(wxID_CLOSE, wxDocManager::OnFileClose)
 682     EVT_MENU(wxID_REVERT, wxDocManager::OnFileRevert)
 683     EVT_MENU(wxID_NEW, wxDocManager::OnFileNew)
 684     EVT_MENU(wxID_SAVE, wxDocManager::OnFileSave)
 685     EVT_MENU(wxID_SAVEAS, wxDocManager::OnFileSaveAs)
 686     EVT_MENU(wxID_UNDO, wxDocManager::OnUndo)
 687     EVT_MENU(wxID_REDO, wxDocManager::OnRedo)
 688 #if wxUSE_PRINTING_ARCHITECTURE
 689     EVT_MENU(wxID_PRINT, wxDocManager::OnPrint)
 690     EVT_MENU(wxID_PRINT_SETUP, wxDocManager::OnPrintSetup)
 691     EVT_MENU(wxID_PREVIEW, wxDocManager::OnPreview)
 692 #endif
 693 END_EVENT_TABLE()
 694
 695 wxDocManager::wxDocManager(long flags, bool initialize)
 696 {
 697     m_defaultDocumentNameCounter = 1;
 698     m_flags = flags;
 699     m_currentView = (wxView *) NULL;
 700     m_maxDocsOpen = 10000;
 701     m_fileHistory = (wxFileHistory *) NULL;
 702     if (initialize)
 703         Initialize();
 704 }
 705
 706 wxDocManager::~wxDocManager()
 707 {
 708     Clear();
 709     if (m_fileHistory)
 710         delete m_fileHistory;
 711 }
 712
 713 bool wxDocManager::Clear(bool force)
 714 {
 715     wxNode *node = m_docs.First();
 716     while (node)
 717     {
 718         wxDocument *doc = (wxDocument *)node->Data();
 719         wxNode *next = node->Next();
 720
 721         if (!doc->Close() && !force)
 722             return FALSE;
 723
 724         // Implicitly deletes the document when the last
 725         // view is removed (deleted)
 726         doc->DeleteAllViews();
 727
 728         // Check document is deleted
 729         if (m_docs.Member(doc))
 730             delete doc;
 731
 732         // This assumes that documents are not connected in
 733         // any way, i.e. deleting one document does NOT
 734         // delete another.
 735         node = next;
 736     }
 737     node = m_templates.First();
 738     while (node)
 739     {
 740         wxDocTemplate *templ = (wxDocTemplate*) node->Data();
 741         wxNode* next = node->Next();
 742         delete templ;
 743         node = next;
 744     }
 745     return TRUE;
 746 }
 747
 748 bool wxDocManager::Initialize()
 749 {
 750     m_fileHistory = OnCreateFileHistory();
 751     return TRUE;
 752 }
 753
 754 wxFileHistory *wxDocManager::OnCreateFileHistory()
 755 {
 756     return new wxFileHistory;
 757 }
 758
 759 void wxDocManager::OnFileClose(wxCommandEvent& WXUNUSED(event))
 760 {
 761     wxDocument *doc = GetCurrentDocument();
 762     if (!doc)
 763         return;
 764     if (doc->Close())
 765     {
 766         doc->DeleteAllViews();
 767         if (m_docs.Member(doc))
 768             delete doc;
 769     }
 770 }
 771
 772 void wxDocManager::OnFileNew(wxCommandEvent& WXUNUSED(event))
 773 {
 774     CreateDocument(wxString(""), wxDOC_NEW);
 775 }
 776
 777 void wxDocManager::OnFileOpen(wxCommandEvent& WXUNUSED(event))
 778 {
 779     CreateDocument(wxString(""), 0);
 780 }
 781
 782 void wxDocManager::OnFileRevert(wxCommandEvent& WXUNUSED(event))
 783 {
 784     wxDocument *doc = GetCurrentDocument();
 785     if (!doc)
 786         return;
 787     doc->Revert();
 788 }
 789
 790 void wxDocManager::OnFileSave(wxCommandEvent& WXUNUSED(event))
 791 {
 792     wxDocument *doc = GetCurrentDocument();
 793     if (!doc)
 794         return;
 795     doc->Save();
 796 }
 797
 798 void wxDocManager::OnFileSaveAs(wxCommandEvent& WXUNUSED(event))
 799 {
 800     wxDocument *doc = GetCurrentDocument();
 801     if (!doc)
 802         return;
 803     doc->SaveAs();
 804 }
 805
 806 void wxDocManager::OnPrint(wxCommandEvent& WXUNUSED(event))
 807 {
 808 #if wxUSE_PRINTING_ARCHITECTURE
 809     wxView *view = GetCurrentView();
 810     if (!view)
 811         return;
 812
 813     wxPrintout *printout = view->OnCreatePrintout();
 814     if (printout)
 815     {
 816         wxPrinter printer;
 817         printer.Print(view->GetFrame(), printout, TRUE);
 818
 819         delete printout;
 820     }
 821 #endif // wxUSE_PRINTING_ARCHITECTURE
 822 }
 823
 824 void wxDocManager::OnPrintSetup(wxCommandEvent& WXUNUSED(event))
 825 {
 826 #if wxUSE_PRINTING_ARCHITECTURE
 827     wxWindow *parentWin = wxTheApp->GetTopWindow();
 828     wxView *view = GetCurrentView();
 829     if (view)
 830         parentWin = view->GetFrame();
 831
 832     wxPrintDialogData data;
 833
 834     wxPrintDialog printerDialog(parentWin, &data);
 835     printerDialog.GetPrintDialogData().SetSetupDialog(TRUE);
 836     printerDialog.ShowModal();
 837 #endif // wxUSE_PRINTING_ARCHITECTURE
 838 }
 839
 840 void wxDocManager::OnPreview(wxCommandEvent& WXUNUSED(event))
 841 {
 842 #if wxUSE_PRINTING_ARCHITECTURE
 843     wxView *view = GetCurrentView();
 844     if (!view)
 845         return;
 846
 847     wxPrintout *printout = view->OnCreatePrintout();
 848     if (printout)
 849     {
 850         // Pass two printout objects: for preview, and possible printing.
 851         wxPrintPreviewBase *preview = (wxPrintPreviewBase *) NULL;
 852         preview = new wxPrintPreview(printout, view->OnCreatePrintout());
 853
 854         wxPreviewFrame *frame = new wxPreviewFrame(preview, (wxFrame *)wxTheApp->GetTopWindow(), _("Print Preview"),
 855                 wxPoint(100, 100), wxSize(600, 650));
 856         frame->Centre(wxBOTH);
 857         frame->Initialize();
 858         frame->Show(TRUE);
 859     }
 860 #endif // wxUSE_PRINTING_ARCHITECTURE
 861 }
 862
 863 void wxDocManager::OnUndo(wxCommandEvent& WXUNUSED(event))
 864 {
 865     wxDocument *doc = GetCurrentDocument();
 866     if (!doc)
 867         return;
 868     if (doc->GetCommandProcessor())
 869         doc->GetCommandProcessor()->Undo();
 870 }
 871
 872 void wxDocManager::OnRedo(wxCommandEvent& WXUNUSED(event))
 873 {
 874     wxDocument *doc = GetCurrentDocument();
 875     if (!doc)
 876         return;
 877     if (doc->GetCommandProcessor())
 878         doc->GetCommandProcessor()->Redo();
 879 }
 880
 881 wxView *wxDocManager::GetCurrentView() const
 882 {
 883     if (m_currentView)
 884         return m_currentView;
 885     if (m_docs.Number() == 1)
 886     {
 887         wxDocument* doc = (wxDocument*) m_docs.First()->Data();
 888         return doc->GetFirstView();
 889     }
 890     return (wxView *) NULL;
 891 }
 892
 893 // Extend event processing to search the view's event table
 894 bool wxDocManager::ProcessEvent(wxEvent& event)
 895 {
 896     wxView* view = GetCurrentView();
 897     if (view)
 898     {
 899         if (view->ProcessEvent(event))
 900             return TRUE;
 901     }
 902     return wxEvtHandler::ProcessEvent(event);
 903 }
 904
 905 wxDocument *wxDocManager::CreateDocument(const wxString& path, long flags)
 906 {
 907     wxDocTemplate **templates = new wxDocTemplate *[m_templates.Number()];
 908     int i;
 909     int n = 0;
 910     for (i = 0; i < m_templates.Number(); i++)
 911     {
 912         wxDocTemplate *temp = (wxDocTemplate *)(m_templates.Nth(i)->Data());
 913         if (temp->IsVisible())
 914         {
 915             templates[n] = temp;
 916             n ++;
 917         }
 918     }
 919     if (n == 0)
 920     {
 921         delete[] templates;
 922         return (wxDocument *) NULL;
 923     }
 924
 925     // If we've reached the max number of docs, close the
 926     // first one.
 927     if (GetDocuments().Number() >= m_maxDocsOpen)
 928     {
 929         wxDocument *doc = (wxDocument *)GetDocuments().First()->Data();
 930         if (doc->Close())
 931         {
 932             // Implicitly deletes the document when
 933             // the last view is deleted
 934             doc->DeleteAllViews();
 935
 936             // Check we're really deleted
 937             if (m_docs.Member(doc))
 938                 delete doc;
 939         }
 940         else
 941             return (wxDocument *) NULL;
 942     }
 943
 944     // New document: user chooses a template, unless there's only one.
 945     if (flags & wxDOC_NEW)
 946     {
 947         if (n == 1)
 948         {
 949             wxDocTemplate *temp = templates[0];
 950             delete[] templates;
 951             wxDocument *newDoc = temp->CreateDocument(path, flags);
 952             if (newDoc)
 953             {
 954                 newDoc->SetDocumentName(temp->GetDocumentName());
 955                 newDoc->SetDocumentTemplate(temp);
 956                 newDoc->OnNewDocument();
 957             }
 958             return newDoc;
 959         }
 960
 961         wxDocTemplate *temp = SelectDocumentType(templates, n);
 962         delete[] templates;
 963         if (temp)
 964         {
 965             wxDocument *newDoc = temp->CreateDocument(path, flags);
 966             if (newDoc)
 967             {
 968                 newDoc->SetDocumentName(temp->GetDocumentName());
 969                 newDoc->SetDocumentTemplate(temp);
 970                 newDoc->OnNewDocument();
 971             }
 972             return newDoc;
 973         }
 974         else
 975             return (wxDocument *) NULL;
 976     }
 977
 978     // Existing document
 979     wxDocTemplate *temp = (wxDocTemplate *) NULL;
 980
 981     wxString path2(_T(""));
 982     if (path != _T(""))
 983         path2 = path;
 984
 985     if (flags & wxDOC_SILENT)
 986         temp = FindTemplateForPath(path2);
 987     else
 988         temp = SelectDocumentPath(templates, n, path2, flags);
 989
 990     delete[] templates;
 991
 992     if (temp)
 993     {
 994         wxDocument *newDoc = temp->CreateDocument(path2, flags);
 995         if (newDoc)
 996         {
 997             newDoc->SetDocumentName(temp->GetDocumentName());
 998             newDoc->SetDocumentTemplate(temp);
 999             if (!newDoc->OnOpenDocument(path2))
1000             {
1001                 delete newDoc;
1002                 return (wxDocument *) NULL;
1003             }
1004             AddFileToHistory(path2);
1005         }
1006         return newDoc;
1007     }
1008     else
1009         return (wxDocument *) NULL;
1010 }
1011
1012 wxView *wxDocManager::CreateView(wxDocument *doc, long flags)
1013 {
1014     wxDocTemplate **templates = new wxDocTemplate *[m_templates.Number()];
1015     int n =0;
1016     int i;
1017     for (i = 0; i < m_templates.Number(); i++)
1018     {
1019         wxDocTemplate *temp = (wxDocTemplate *)(m_templates.Nth(i)->Data());
1020         if (temp->IsVisible())
1021         {
1022             if (temp->GetDocumentName() == doc->GetDocumentName())
1023             {
1024                 templates[n] = temp;
1025                 n ++;
1026             }
1027         }
1028     }
1029     if (n == 0)
1030     {
1031         delete[] templates;
1032         return (wxView *) NULL;
1033     }
1034     if (n == 1)
1035     {
1036         wxDocTemplate *temp = templates[0];
1037         delete[] templates;
1038         wxView *view = temp->CreateView(doc, flags);
1039         if (view)
1040             view->SetViewName(temp->GetViewName());
1041         return view;
1042     }
1043
1044     wxDocTemplate *temp = SelectViewType(templates, n);
1045     delete[] templates;
1046     if (temp)
1047     {
1048         wxView *view = temp->CreateView(doc, flags);
1049         if (view)
1050             view->SetViewName(temp->GetViewName());
1051         return view;
1052     }
1053     else
1054         return (wxView *) NULL;
1055 }
1056
1057 // Not yet implemented
1058 void wxDocManager::DeleteTemplate(wxDocTemplate *WXUNUSED(temp), long WXUNUSED(flags))
1059 {
1060 }
1061
1062 // Not yet implemented
1063 bool wxDocManager::FlushDoc(wxDocument *WXUNUSED(doc))
1064 {
1065     return FALSE;
1066 }
1067
1068 wxDocument *wxDocManager::GetCurrentDocument() const
1069 {
1070     if (m_currentView)
1071         return m_currentView->GetDocument();
1072     else
1073         return (wxDocument *) NULL;
1074 }
1075
1076 // Make a default document name
1077 bool wxDocManager::MakeDefaultName(wxString& name)
1078 {
1079     name.Printf(_("unnamed%d"), m_defaultDocumentNameCounter);
1080     m_defaultDocumentNameCounter++;
1081
1082     return TRUE;
1083 }
1084
1085 // Not yet implemented
1086 wxDocTemplate *wxDocManager::MatchTemplate(const wxString& WXUNUSED(path))
1087 {
1088     return (wxDocTemplate *) NULL;
1089 }
1090
1091 // File history management
1092 void wxDocManager::AddFileToHistory(const wxString& file)
1093 {
1094     if (m_fileHistory)
1095         m_fileHistory->AddFileToHistory(file);
1096 }
1097
1098 wxString wxDocManager::GetHistoryFile(int i) const
1099 {
1100     wxString histFile;
1101
1102     if (m_fileHistory)
1103         histFile = m_fileHistory->GetHistoryFile(i);
1104
1105     return histFile;
1106 }
1107
1108 void wxDocManager::FileHistoryUseMenu(wxMenu *menu)
1109 {
1110     if (m_fileHistory)
1111         m_fileHistory->UseMenu(menu);
1112 }
1113
1114 void wxDocManager::FileHistoryRemoveMenu(wxMenu *menu)
1115 {
1116     if (m_fileHistory)
1117         m_fileHistory->RemoveMenu(menu);
1118 }
1119
1120 #if wxUSE_CONFIG
1121 void wxDocManager::FileHistoryLoad(wxConfigBase& config)
1122 {
1123     if (m_fileHistory)
1124         m_fileHistory->Load(config);
1125 }
1126
1127 void wxDocManager::FileHistorySave(wxConfigBase& config)
1128 {
1129     if (m_fileHistory)
1130         m_fileHistory->Save(config);
1131 }
1132 #endif
1133
1134 void wxDocManager::FileHistoryAddFilesToMenu(wxMenu* menu)
1135 {
1136     if (m_fileHistory)
1137         m_fileHistory->AddFilesToMenu(menu);
1138 }
1139
1140 void wxDocManager::FileHistoryAddFilesToMenu()
1141 {
1142     if (m_fileHistory)
1143         m_fileHistory->AddFilesToMenu();
1144 }
1145
1146 int wxDocManager::GetNoHistoryFiles() const
1147 {
1148     if (m_fileHistory)
1149         return m_fileHistory->GetNoHistoryFiles();
1150     else
1151         return 0;
1152 }
1153
1154
1155 // Find out the document template via matching in the document file format
1156 // against that of the template
1157 wxDocTemplate *wxDocManager::FindTemplateForPath(const wxString& path)
1158 {
1159     wxDocTemplate *theTemplate = (wxDocTemplate *) NULL;
1160
1161     // Find the template which this extension corresponds to
1162     int i;
1163     for (i = 0; i < m_templates.Number(); i++)
1164     {
1165         wxDocTemplate *temp = (wxDocTemplate *)m_templates.Nth(i)->Data();
1166         if ( temp->FileMatchesTemplate(path) )
1167         {
1168             theTemplate = temp;
1169             break;
1170         }
1171     }
1172     return theTemplate;
1173 }
1174
1175 // Prompts user to open a file, using file specs in templates.
1176 // How to implement in wxWindows? Must extend the file selector
1177 // dialog or implement own; OR match the extension to the
1178 // template extension.
1179
1180 wxDocTemplate *wxDocManager::SelectDocumentPath(wxDocTemplate **templates,
1181 #ifdef __WXMSW__
1182                                                 int noTemplates,
1183 #else
1184                                                 int WXUNUSED(noTemplates),
1185 #endif
1186                                                 wxString& path,
1187                                                 long WXUNUSED(flags),
1188                                                 bool WXUNUSED(save))
1189 {
1190     // We can only have multiple filters in Windows
1191 #ifdef __WXMSW__
1192     wxString descrBuf;
1193
1194     int i;
1195     for (i = 0; i < noTemplates; i++)
1196     {
1197         if (templates[i]->IsVisible())
1198         {
1199             // add a '|' to separate this filter from the previous one
1200             if ( !descrBuf.IsEmpty() )
1201                 descrBuf << _T('|');
1202
1203             descrBuf << templates[i]->GetDescription()
1204                 << _T(" (") << templates[i]->GetFileFilter() << _T(") |")
1205                 << templates[i]->GetFileFilter();
1206         }
1207     }
1208 #else
1209     wxString descrBuf = _T("*.*");
1210 #endif
1211
1212     int FilterIndex = 0;
1213     wxString pathTmp = wxFileSelectorEx(_("Select a file"),
1214                                         _T(""),
1215                                         _T(""),
1216                                         &FilterIndex,
1217                                         descrBuf,
1218                                         0,
1219                                         wxTheApp->GetTopWindow());
1220
1221     if (!pathTmp.IsEmpty())
1222     {
1223         path = pathTmp;
1224         wxString theExt = FindExtension(path);
1225         if (!theExt)
1226             return (wxDocTemplate *) NULL;
1227
1228         // This is dodgy in that we're selecting the template on the
1229         // basis of the file extension, which may not be a standard
1230         // one. We really want to know exactly which template was
1231         // chosen by using a more advanced file selector.
1232         wxDocTemplate *theTemplate = FindTemplateForPath(path);
1233         if ( !theTemplate )
1234             theTemplate = templates[FilterIndex];
1235
1236         return theTemplate;
1237     }
1238     else
1239     {
1240         path = _T("");
1241         return (wxDocTemplate *) NULL;
1242     }
1243 #if 0
1244     // In all other windowing systems, until we have more advanced
1245     // file selectors, we must select the document type (template) first, and
1246     // _then_ pop up the file selector.
1247     wxDocTemplate *temp = SelectDocumentType(templates, noTemplates);
1248     if (!temp)
1249         return (wxDocTemplate *) NULL;
1250
1251     wxChar *pathTmp = wxFileSelector(_("Select a file"), _T(""), _T(""),
1252             temp->GetDefaultExtension(),
1253             temp->GetFileFilter(),
1254             0, wxTheApp->GetTopWindow());
1255
1256     if (pathTmp)
1257     {
1258         path = pathTmp;
1259         return temp;
1260     }
1261     else
1262         return (wxDocTemplate *) NULL;
1263 #endif // 0
1264 }
1265
1266 wxDocTemplate *wxDocManager::SelectDocumentType(wxDocTemplate **templates,
1267                                                 int noTemplates)
1268 {
1269     wxChar **strings = new wxChar *[noTemplates];
1270     wxChar **data = new wxChar *[noTemplates];
1271     int i;
1272     int n = 0;
1273     for (i = 0; i < noTemplates; i++)
1274     {
1275         if (templates[i]->IsVisible())
1276         {
1277             strings[n] = WXSTRINGCAST templates[i]->m_description;
1278             data[n] = (wxChar *)templates[i];
1279             n ++;
1280         }
1281     }
1282     if (n == 0)
1283     {
1284         delete[] strings;
1285         delete[] data;
1286         return (wxDocTemplate *) NULL;
1287     }
1288     else if (n == 1)
1289     {
1290         wxDocTemplate *temp = (wxDocTemplate *)data[0];
1291         delete[] strings;
1292         delete[] data;
1293         return temp;
1294     }
1295
1296     wxDocTemplate *theTemplate = (wxDocTemplate *)wxGetSingleChoiceData(_("Select a document template"), _("Templates"), n,
1297             strings, (char **)data);
1298     delete[] strings;
1299     delete[] data;
1300     return theTemplate;
1301 }
1302
1303 wxDocTemplate *wxDocManager::SelectViewType(wxDocTemplate **templates,
1304         int noTemplates)
1305 {
1306     wxChar **strings = new wxChar *[noTemplates];
1307     wxChar **data = new wxChar *[noTemplates];
1308     int i;
1309     int n = 0;
1310     for (i = 0; i < noTemplates; i++)
1311     {
1312         if (templates[i]->IsVisible() && (templates[i]->GetViewName() != _T("")))
1313         {
1314             strings[n] = WXSTRINGCAST templates[i]->m_viewTypeName;
1315             data[n] = (wxChar *)templates[i];
1316             n ++;
1317         }
1318     }
1319     wxDocTemplate *theTemplate = (wxDocTemplate *)wxGetSingleChoiceData(_("Select a document view"), _("Views"), n,
1320             strings, (char **)data);
1321     delete[] strings;
1322     delete[] data;
1323     return theTemplate;
1324 }
1325
1326 void wxDocManager::AssociateTemplate(wxDocTemplate *temp)
1327 {
1328     if (!m_templates.Member(temp))
1329         m_templates.Append(temp);
1330 }
1331
1332 void wxDocManager::DisassociateTemplate(wxDocTemplate *temp)
1333 {
1334     m_templates.DeleteObject(temp);
1335 }
1336
1337 // Add and remove a document from the manager's list
1338 void wxDocManager::AddDocument(wxDocument *doc)
1339 {
1340     if (!m_docs.Member(doc))
1341         m_docs.Append(doc);
1342 }
1343
1344 void wxDocManager::RemoveDocument(wxDocument *doc)
1345 {
1346     m_docs.DeleteObject(doc);
1347 }
1348
1349 // Views or windows should inform the document manager
1350 // when a view is going in or out of focus
1351 void wxDocManager::ActivateView(wxView *view, bool activate, bool WXUNUSED(deleting))
1352 {
1353     // If we're deactiving, and if we're not actually deleting the view, then
1354     // don't reset the current view because we may be going to
1355     // a window without a view.
1356     // WHAT DID I MEAN BY THAT EXACTLY?
1357     /*
1358        if (deleting)
1359        {
1360        if (m_currentView == view)
1361        m_currentView = NULL;
1362        }
1363        else
1364      */
1365     {
1366         if (activate)
1367             m_currentView = view;
1368         else
1369             m_currentView = (wxView *) NULL;
1370     }
1371 }
1372
1373 // ----------------------------------------------------------------------------
1374 // Default document child frame
1375 // ----------------------------------------------------------------------------
1376
1377 BEGIN_EVENT_TABLE(wxDocChildFrame, wxFrame)
1378     EVT_ACTIVATE(wxDocChildFrame::OnActivate)
1379     EVT_CLOSE(wxDocChildFrame::OnCloseWindow)
1380 END_EVENT_TABLE()
1381
1382 wxDocChildFrame::wxDocChildFrame(wxDocument *doc,
1383                                  wxView *view,
1384                                  wxFrame *frame,
1385                                  wxWindowID id,
1386                                  const wxString& title,
1387                                  const wxPoint& pos,
1388                                  const wxSize& size,
1389                                  long style,
1390                                  const wxString& name)
1391                : wxFrame(frame, id, title, pos, size, style, name)
1392 {
1393     m_childDocument = doc;
1394     m_childView = view;
1395     if (view)
1396         view->SetFrame(this);
1397 }
1398
1399 wxDocChildFrame::~wxDocChildFrame()
1400 {
1401 }
1402
1403 // Extend event processing to search the view's event table
1404 bool wxDocChildFrame::ProcessEvent(wxEvent& event)
1405 {
1406     if (m_childView)
1407         m_childView->Activate(TRUE);
1408
1409     if ( !m_childView || ! m_childView->ProcessEvent(event) )
1410     {
1411         // Only hand up to the parent if it's a menu command
1412         if (!event.IsKindOf(CLASSINFO(wxCommandEvent)) || !GetParent() || !GetParent()->ProcessEvent(event))
1413             return wxEvtHandler::ProcessEvent(event);
1414         else
1415             return TRUE;
1416     }
1417     else
1418         return TRUE;
1419 }
1420
1421 void wxDocChildFrame::OnActivate(wxActivateEvent& event)
1422 {
1423     wxFrame::OnActivate(event);
1424
1425     if (m_childView)
1426         m_childView->Activate(event.GetActive());
1427 }
1428
1429 void wxDocChildFrame::OnCloseWindow(wxCloseEvent& event)
1430 {
1431     if (m_childView)
1432     {
1433         bool ans = FALSE;
1434         if (!event.CanVeto())
1435             ans = TRUE; // Must delete.
1436         else
1437             ans = m_childView->Close(FALSE); // FALSE means don't delete associated window
1438
1439         if (ans)
1440         {
1441             m_childView->Activate(FALSE);
1442             delete m_childView;
1443             m_childView = (wxView *) NULL;
1444             m_childDocument = (wxDocument *) NULL;
1445
1446             this->Destroy();
1447         }
1448         else
1449             event.Veto();
1450     }
1451     else
1452         event.Veto();
1453 }
1454
1455 // ----------------------------------------------------------------------------
1456 // Default parent frame
1457 // ----------------------------------------------------------------------------
1458
1459 BEGIN_EVENT_TABLE(wxDocParentFrame, wxFrame)
1460     EVT_MENU(wxID_EXIT, wxDocParentFrame::OnExit)
1461     EVT_MENU_RANGE(wxID_FILE1, wxID_FILE9, wxDocParentFrame::OnMRUFile)
1462     EVT_CLOSE(wxDocParentFrame::OnCloseWindow)
1463 END_EVENT_TABLE()
1464
1465 wxDocParentFrame::wxDocParentFrame(wxDocManager *manager,
1466                                    wxFrame *frame,
1467                                    wxWindowID id,
1468                                    const wxString& title,
1469                                    const wxPoint& pos,
1470                                    const wxSize& size,
1471                                    long style,
1472                                    const wxString& name)
1473                 : wxFrame(frame, id, title, pos, size, style, name)
1474 {
1475     m_docManager = manager;
1476 }
1477
1478 void wxDocParentFrame::OnExit(wxCommandEvent& WXUNUSED(event))
1479 {
1480     Close();
1481 }
1482
1483 void wxDocParentFrame::OnMRUFile(wxCommandEvent& event)
1484 {
1485     wxString f(m_docManager->GetHistoryFile(event.GetSelection() - wxID_FILE1));
1486     if (f != _T(""))
1487         (void)m_docManager->CreateDocument(f, wxDOC_SILENT);
1488 }
1489
1490 // Extend event processing to search the view's event table
1491 bool wxDocParentFrame::ProcessEvent(wxEvent& event)
1492 {
1493     // Try the document manager, then do default processing
1494     if (!m_docManager || !m_docManager->ProcessEvent(event))
1495         return wxEvtHandler::ProcessEvent(event);
1496     else
1497         return TRUE;
1498 }
1499
1500 // Define the behaviour for the frame closing
1501 // - must delete all frames except for the main one.
1502 void wxDocParentFrame::OnCloseWindow(wxCloseEvent& event)
1503 {
1504     if (m_docManager->Clear(!event.CanVeto()))
1505     {
1506         this->Destroy();
1507     }
1508     else
1509         event.Veto();
1510 }
1511
1512 #if wxUSE_PRINTING_ARCHITECTURE
1513
1514 wxDocPrintout::wxDocPrintout(wxView *view, const wxString& title)
1515              : wxPrintout(WXSTRINGCAST title)
1516 {
1517     m_printoutView = view;
1518 }
1519
1520 bool wxDocPrintout::OnPrintPage(int WXUNUSED(page))
1521 {
1522     wxDC *dc = GetDC();
1523
1524     // Get the logical pixels per inch of screen and printer
1525     int ppiScreenX, ppiScreenY;
1526     GetPPIScreen(&ppiScreenX, &ppiScreenY);
1527     int ppiPrinterX, ppiPrinterY;
1528     GetPPIPrinter(&ppiPrinterX, &ppiPrinterY);
1529
1530     // This scales the DC so that the printout roughly represents the
1531     // the screen scaling. The text point size _should_ be the right size
1532     // but in fact is too small for some reason. This is a detail that will
1533     // need to be addressed at some point but can be fudged for the
1534     // moment.
1535     float scale = (float)((float)ppiPrinterX/(float)ppiScreenX);
1536
1537     // Now we have to check in case our real page size is reduced
1538     // (e.g. because we're drawing to a print preview memory DC)
1539     int pageWidth, pageHeight;
1540     int w, h;
1541     dc->GetSize(&w, &h);
1542     GetPageSizePixels(&pageWidth, &pageHeight);
1543
1544     // If printer pageWidth == current DC width, then this doesn't
1545     // change. But w might be the preview bitmap width, so scale down.
1546     float overallScale = scale * (float)(w/(float)pageWidth);
1547     dc->SetUserScale(overallScale, overallScale);
1548
1549     if (m_printoutView)
1550     {
1551         m_printoutView->OnDraw(dc);
1552     }
1553     return TRUE;
1554 }
1555
1556 bool wxDocPrintout::HasPage(int pageNum)
1557 {
1558     return (pageNum == 1);
1559 }
1560
1561 bool wxDocPrintout::OnBeginDocument(int startPage, int endPage)
1562 {
1563     if (!wxPrintout::OnBeginDocument(startPage, endPage))
1564         return FALSE;
1565
1566     return TRUE;
1567 }
1568
1569 void wxDocPrintout::GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, int *selPageTo)
1570 {
1571     *minPage = 1;
1572     *maxPage = 1;
1573     *selPageFrom = 1;
1574     *selPageTo = 1;
1575 }
1576
1577 #endif // wxUSE_PRINTING_ARCHITECTURE
1578
1579 // ----------------------------------------------------------------------------
1580 // Command processing framework
1581 // ----------------------------------------------------------------------------
1582
1583 wxCommand::wxCommand(bool canUndoIt, const wxString& name)
1584 {
1585     m_canUndo = canUndoIt;
1586     m_commandName = name;
1587 }
1588
1589 wxCommand::~wxCommand()
1590 {
1591 }
1592
1593 // Command processor
1594 wxCommandProcessor::wxCommandProcessor(int maxCommands)
1595 {
1596     m_maxNoCommands = maxCommands;
1597     m_currentCommand = (wxNode *) NULL;
1598     m_commandEditMenu = (wxMenu *) NULL;
1599 }
1600
1601 wxCommandProcessor::~wxCommandProcessor()
1602 {
1603     ClearCommands();
1604 }
1605
1606 // Pass a command to the processor. The processor calls Do();
1607 // if successful, is appended to the command history unless
1608 // storeIt is FALSE.
1609 bool wxCommandProcessor::Submit(wxCommand *command, bool storeIt)
1610 {
1611     bool success = command->Do();
1612     if (success && storeIt)
1613     {
1614         if (m_commands.Number() == m_maxNoCommands)
1615         {
1616             wxNode *firstNode = m_commands.First();
1617             wxCommand *firstCommand = (wxCommand *)firstNode->Data();
1618             delete firstCommand;
1619             delete firstNode;
1620         }
1621
1622         // Correct a bug: we must chop off the current 'branch'
1623         // so that we're at the end of the command list.
1624         if (!m_currentCommand)
1625             ClearCommands();
1626         else
1627         {
1628             wxNode *node = m_currentCommand->Next();
1629             while (node)
1630             {
1631                 wxNode *next = node->Next();
1632                 delete (wxCommand *)node->Data();
1633                 delete node;
1634                 node = next;
1635             }
1636         }
1637
1638         m_commands.Append(command);
1639         m_currentCommand = m_commands.Last();
1640         SetMenuStrings();
1641     }
1642     return success;
1643 }
1644
1645 bool wxCommandProcessor::Undo()
1646 {
1647     if (m_currentCommand)
1648     {
1649         wxCommand *command = (wxCommand *)m_currentCommand->Data();
1650         if (command->CanUndo())
1651         {
1652             bool success = command->Undo();
1653             if (success)
1654             {
1655                 m_currentCommand = m_currentCommand->Previous();
1656                 SetMenuStrings();
1657                 return TRUE;
1658             }
1659         }
1660     }
1661     return FALSE;
1662 }
1663
1664 bool wxCommandProcessor::Redo()
1665 {
1666     wxCommand *redoCommand = (wxCommand *) NULL;
1667     wxNode *redoNode = (wxNode *) NULL;
1668     if (m_currentCommand && m_currentCommand->Next())
1669     {
1670         redoCommand = (wxCommand *)m_currentCommand->Next()->Data();
1671         redoNode = m_currentCommand->Next();
1672     }
1673     else
1674     {
1675         if (m_commands.Number() > 0)
1676         {
1677             redoCommand = (wxCommand *)m_commands.First()->Data();
1678             redoNode = m_commands.First();
1679         }
1680     }
1681
1682     if (redoCommand)
1683     {
1684         bool success = redoCommand->Do();
1685         if (success)
1686         {
1687             m_currentCommand = redoNode;
1688             SetMenuStrings();
1689             return TRUE;
1690         }
1691     }
1692     return FALSE;
1693 }
1694
1695 bool wxCommandProcessor::CanUndo() const
1696 {
1697     if (m_currentCommand)
1698         return ((wxCommand *)m_currentCommand->Data())->CanUndo();
1699     return FALSE;
1700 }
1701
1702 bool wxCommandProcessor::CanRedo() const
1703 {
1704     if ((m_currentCommand != (wxNode*) NULL) && (m_currentCommand->Next() == (wxNode*) NULL))
1705         return FALSE;
1706
1707     if ((m_currentCommand != (wxNode*) NULL) && (m_currentCommand->Next() != (wxNode*) NULL))
1708         return TRUE;
1709
1710     if ((m_currentCommand == (wxNode*) NULL) && (m_commands.Number() > 0))
1711         return TRUE;
1712
1713     return FALSE;
1714 }
1715
1716 void wxCommandProcessor::Initialize()
1717 {
1718     m_currentCommand = m_commands.Last();
1719     SetMenuStrings();
1720 }
1721
1722 void wxCommandProcessor::SetMenuStrings()
1723 {
1724     if (m_commandEditMenu)
1725     {
1726         wxString buf;
1727         if (m_currentCommand)
1728         {
1729             wxCommand *command = (wxCommand *)m_currentCommand->Data();
1730             wxString commandName(command->GetName());
1731             if (commandName == _T("")) commandName = _("Unnamed command");
1732             bool canUndo = command->CanUndo();
1733             if (canUndo)
1734                 buf = wxString(_("&Undo ")) + commandName;
1735             else
1736                 buf = wxString(_("Can't &Undo ")) + commandName;
1737
1738             m_commandEditMenu->SetLabel(wxID_UNDO, buf);
1739             m_commandEditMenu->Enable(wxID_UNDO, canUndo);
1740
1741             // We can redo, if we're not at the end of the history.
1742             if (m_currentCommand->Next())
1743             {
1744                 wxCommand *redoCommand = (wxCommand *)m_currentCommand->Next()->Data();
1745                 wxString redoCommandName(redoCommand->GetName());
1746                 if (redoCommandName == _T("")) redoCommandName = _("Unnamed command");
1747                 buf = wxString(_("&Redo ")) + redoCommandName;
1748                 m_commandEditMenu->SetLabel(wxID_REDO, buf);
1749                 m_commandEditMenu->Enable(wxID_REDO, TRUE);
1750             }
1751             else
1752             {
1753                 m_commandEditMenu->SetLabel(wxID_REDO, _("&Redo"));
1754                 m_commandEditMenu->Enable(wxID_REDO, FALSE);
1755             }
1756         }
1757         else
1758         {
1759             m_commandEditMenu->SetLabel(wxID_UNDO, _("&Undo"));
1760             m_commandEditMenu->Enable(wxID_UNDO, FALSE);
1761
1762             if (m_commands.Number() == 0)
1763             {
1764                 m_commandEditMenu->SetLabel(wxID_REDO, _("&Redo"));
1765                 m_commandEditMenu->Enable(wxID_REDO, FALSE);
1766             }
1767             else
1768             {
1769                 // currentCommand is NULL but there are commands: this means that
1770                 // we've undone to the start of the list, but can redo the first.
1771                 wxCommand *redoCommand = (wxCommand *)m_commands.First()->Data();
1772                 wxString redoCommandName(redoCommand->GetName());
1773                 if (redoCommandName == _T("")) redoCommandName = _("Unnamed command");
1774                 buf = wxString(_("&Redo ")) + redoCommandName;
1775                 m_commandEditMenu->SetLabel(wxID_REDO, buf);
1776                 m_commandEditMenu->Enable(wxID_REDO, TRUE);
1777             }
1778         }
1779     }
1780 }
1781
1782 void wxCommandProcessor::ClearCommands()
1783 {
1784     wxNode *node = m_commands.First();
1785     while (node)
1786     {
1787         wxCommand *command = (wxCommand *)node->Data();
1788         delete command;
1789         delete node;
1790         node = m_commands.First();
1791     }
1792     m_currentCommand = (wxNode *) NULL;
1793 }
1794
1795 // ----------------------------------------------------------------------------
1796 // File history processor
1797 // ----------------------------------------------------------------------------
1798
1799 wxFileHistory::wxFileHistory(int maxFiles)
1800 {
1801     m_fileMaxFiles = maxFiles;
1802     m_fileHistoryN = 0;
1803     m_fileHistory = new wxChar *[m_fileMaxFiles];
1804 }
1805
1806 wxFileHistory::~wxFileHistory()
1807 {
1808     int i;
1809     for (i = 0; i < m_fileHistoryN; i++)
1810         delete[] m_fileHistory[i];
1811     delete[] m_fileHistory;
1812 }
1813
1814 // File history management
1815 void wxFileHistory::AddFileToHistory(const wxString& file)
1816 {
1817     int i;
1818     // Check we don't already have this file
1819     for (i = 0; i < m_fileHistoryN; i++)
1820     {
1821         if (m_fileHistory[i] && wxString(m_fileHistory[i]) == file)
1822             return;
1823     }
1824
1825     // Add to the project file history:
1826     // Move existing files (if any) down so we can insert file at beginning.
1827
1828     // First delete filename that has popped off the end of the array (if any)
1829     if (m_fileHistoryN == m_fileMaxFiles)
1830     {
1831         delete[] m_fileHistory[m_fileMaxFiles-1];
1832         m_fileHistory[m_fileMaxFiles-1] = (wxChar *) NULL;
1833     }
1834     if (m_fileHistoryN < m_fileMaxFiles)
1835     {
1836         wxNode* node = m_fileMenus.First();
1837         while (node)
1838         {
1839             wxMenu* menu = (wxMenu*) node->Data();
1840             if (m_fileHistoryN == 0)
1841                 menu->AppendSeparator();
1842             menu->Append(wxID_FILE1+m_fileHistoryN, _("[EMPTY]"));
1843             node = node->Next();
1844         }
1845         m_fileHistoryN ++;
1846     }
1847     // Shuffle filenames down
1848     for (i = (m_fileHistoryN-1); i > 0; i--)
1849     {
1850         m_fileHistory[i] = m_fileHistory[i-1];
1851     }
1852     m_fileHistory[0] = copystring(file);
1853
1854     for (i = 0; i < m_fileHistoryN; i++)
1855         if (m_fileHistory[i])
1856         {
1857             wxString buf;
1858             buf.Printf(_T("&%d %s"), i+1, m_fileHistory[i]);
1859             wxNode* node = m_fileMenus.First();
1860             while (node)
1861             {
1862                 wxMenu* menu = (wxMenu*) node->Data();
1863                 menu->SetLabel(wxID_FILE1+i, buf);
1864                 node = node->Next();
1865             }
1866         }
1867 }
1868
1869 wxString wxFileHistory::GetHistoryFile(int i) const
1870 {
1871     if (i < m_fileHistoryN)
1872         return wxString(m_fileHistory[i]);
1873     else
1874         return wxString("");
1875 }
1876
1877 void wxFileHistory::UseMenu(wxMenu *menu)
1878 {
1879     if (!m_fileMenus.Member(menu))
1880         m_fileMenus.Append(menu);
1881 }
1882
1883 void wxFileHistory::RemoveMenu(wxMenu *menu)
1884 {
1885     m_fileMenus.DeleteObject(menu);
1886 }
1887
1888 #if wxUSE_CONFIG
1889 void wxFileHistory::Load(wxConfigBase& config)
1890 {
1891     m_fileHistoryN = 0;
1892     wxString buf;
1893     buf.Printf(_T("file%d"), m_fileHistoryN+1);
1894     wxString historyFile;
1895     while ((m_fileHistoryN <= m_fileMaxFiles) && config.Read(buf, &historyFile) && (historyFile != _T("")))
1896     {
1897         m_fileHistory[m_fileHistoryN] = copystring((const wxChar*) historyFile);
1898         m_fileHistoryN ++;
1899         buf.Printf(_T("file%d"), m_fileHistoryN+1);
1900         historyFile = "";
1901     }
1902     AddFilesToMenu();
1903 }
1904
1905 void wxFileHistory::Save(wxConfigBase& config)
1906 {
1907     int i;
1908     for (i = 0; i < m_fileHistoryN; i++)
1909     {
1910         wxString buf;
1911         buf.Printf(_T("file%d"), i+1);
1912         config.Write(buf, wxString(m_fileHistory[i]));
1913     }
1914 }
1915 #endif // wxUSE_CONFIG
1916
1917 void wxFileHistory::AddFilesToMenu()
1918 {
1919     if (m_fileHistoryN > 0)
1920     {
1921         wxNode* node = m_fileMenus.First();
1922         while (node)
1923         {
1924             wxMenu* menu = (wxMenu*) node->Data();
1925             menu->AppendSeparator();
1926             int i;
1927             for (i = 0; i < m_fileHistoryN; i++)
1928             {
1929                 if (m_fileHistory[i])
1930                 {
1931                     wxString buf;
1932                     buf.Printf(_T("&%d %s"), i+1, m_fileHistory[i]);
1933                     menu->Append(wxID_FILE1+i, buf);
1934                 }
1935             }
1936             node = node->Next();
1937         }
1938     }
1939 }
1940
1941 void wxFileHistory::AddFilesToMenu(wxMenu* menu)
1942 {
1943     if (m_fileHistoryN > 0)
1944     {
1945         menu->AppendSeparator();
1946         int i;
1947         for (i = 0; i < m_fileHistoryN; i++)
1948         {
1949             if (m_fileHistory[i])
1950             {
1951                 wxString buf;
1952                 buf.Printf(_T("&%d %s"), i+1, m_fileHistory[i]);
1953                 menu->Append(wxID_FILE1+i, buf);
1954             }
1955         }
1956     }
1957 }
1958
1959 // ----------------------------------------------------------------------------
1960 // Permits compatibility with existing file formats and functions that
1961 // manipulate files directly
1962 // ----------------------------------------------------------------------------
1963
1964 #if wxUSE_STD_IOSTREAM
1965 bool wxTransferFileToStream(const wxString& filename, ostream& stream)
1966 {
1967     FILE *fd1;
1968     int ch;
1969
1970     if ((fd1 = fopen (filename.fn_str(), "rb")) == NULL)
1971         return FALSE;
1972
1973     while ((ch = getc (fd1)) != EOF)
1974         stream << (unsigned char)ch;
1975
1976     fclose (fd1);
1977     return TRUE;
1978 }
1979
1980 bool wxTransferStreamToFile(istream& stream, const wxString& filename)
1981 {
1982     FILE *fd1;
1983     int ch;
1984
1985     if ((fd1 = fopen (filename.fn_str(), "wb")) == NULL)
1986     {
1987         return FALSE;
1988     }
1989
1990     while (!stream.eof())
1991     {
1992         ch = stream.get();
1993         if (!stream.eof())
1994             putc (ch, fd1);
1995     }
1996     fclose (fd1);
1997     return TRUE;
1998 }
1999 #endif
2000
2001 #endif // wxUSE_DOC_VIEW_ARCHITECTURE
2002