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 #include "wx/file.h"
  60
  61 #include <stdio.h>
  62 #include <string.h>
  63
  64 #if wxUSE_STD_IOSTREAM
  65   #include "wx/ioswrap.h"
  66   #if wxUSE_IOSTREAMH
  67     #include <fstream.h>
  68   #else
  69     #include <fstream>
  70   #endif
  71 #else
  72   #include "wx/wfstream.h"
  73 #endif
  74
  75 // ----------------------------------------------------------------------------
  76 // wxWindows macros
  77 // ----------------------------------------------------------------------------
  78
  79 #if !USE_SHARED_LIBRARY
  80     IMPLEMENT_ABSTRACT_CLASS(wxDocument, wxEvtHandler)
  81     IMPLEMENT_ABSTRACT_CLASS(wxView, wxEvtHandler)
  82     IMPLEMENT_ABSTRACT_CLASS(wxDocTemplate, wxObject)
  83     IMPLEMENT_DYNAMIC_CLASS(wxDocManager, wxEvtHandler)
  84     IMPLEMENT_CLASS(wxDocChildFrame, wxFrame)
  85     IMPLEMENT_CLASS(wxDocParentFrame, wxFrame)
  86
  87     #if wxUSE_PRINTING_ARCHITECTURE
  88         IMPLEMENT_DYNAMIC_CLASS(wxDocPrintout, wxPrintout)
  89     #endif
  90
  91     IMPLEMENT_CLASS(wxCommand, wxObject)
  92     IMPLEMENT_DYNAMIC_CLASS(wxCommandProcessor, wxObject)
  93     IMPLEMENT_DYNAMIC_CLASS(wxFileHistory, wxObject)
  94 #endif
  95
  96 // ----------------------------------------------------------------------------
  97 // function prototypes
  98 // ----------------------------------------------------------------------------
  99
 100 static inline wxString FindExtension(const wxChar *path);
 101
 102 // ----------------------------------------------------------------------------
 103 // local constants
 104 // ----------------------------------------------------------------------------
 105
 106 static const char *s_MRUEntryFormat = wxT("&%d %s");
 107
 108 // ============================================================================
 109 // implementation
 110 // ============================================================================
 111
 112 // ----------------------------------------------------------------------------
 113 // local functions
 114 // ----------------------------------------------------------------------------
 115
 116 static wxString FindExtension(const wxChar *path)
 117 {
 118     wxString ext;
 119     wxSplitPath(path, NULL, NULL, &ext);
 120
 121     // VZ: extensions are considered not case sensitive - is this really a good
 122     //     idea?
 123     return ext.MakeLower();
 124 }
 125
 126 // ----------------------------------------------------------------------------
 127 // Definition of wxDocument
 128 // ----------------------------------------------------------------------------
 129
 130 wxDocument::wxDocument(wxDocument *parent)
 131 {
 132     m_documentModified = FALSE;
 133     m_documentParent = parent;
 134     m_documentTemplate = (wxDocTemplate *) 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     GetDocumentManager()->RemoveDocument(this);
 151
 152     // Not safe to do here, since it'll invoke virtual view functions
 153     // expecting to see valid derived objects: and by the time we get here,
 154     // we've called destructors higher up.
 155     //DeleteAllViews();
 156 }
 157
 158 bool wxDocument::Close()
 159 {
 160     if (OnSaveModified())
 161         return OnCloseDocument();
 162     else
 163         return FALSE;
 164 }
 165
 166 bool wxDocument::OnCloseDocument()
 167 {
 168     DeleteContents();
 169     Modify(FALSE);
 170     return TRUE;
 171 }
 172
 173 // Note that this implicitly deletes the document when the last view is
 174 // deleted.
 175 bool wxDocument::DeleteAllViews()
 176 {
 177     wxNode *node = m_documentViews.First();
 178     while (node)
 179     {
 180         wxView *view = (wxView *)node->Data();
 181         if (!view->Close())
 182             return FALSE;
 183
 184         wxNode *next = node->Next();
 185
 186         delete view; // Deletes node implicitly
 187         node = next;
 188     }
 189     return TRUE;
 190 }
 191
 192 wxView *wxDocument::GetFirstView() const
 193 {
 194     if (m_documentViews.Number() == 0)
 195         return (wxView *) NULL;
 196     return (wxView *)m_documentViews.First()->Data();
 197 }
 198
 199 wxDocManager *wxDocument::GetDocumentManager() const
 200 {
 201     return m_documentTemplate->GetDocumentManager();
 202 }
 203
 204 bool wxDocument::OnNewDocument()
 205 {
 206     if (!OnSaveModified())
 207         return FALSE;
 208
 209     if (OnCloseDocument()==FALSE) return FALSE;
 210     DeleteContents();
 211     Modify(FALSE);
 212     SetDocumentSaved(FALSE);
 213
 214     wxString name;
 215     GetDocumentManager()->MakeDefaultName(name);
 216     SetTitle(name);
 217     SetFilename(name, TRUE);
 218
 219     return TRUE;
 220 }
 221
 222 bool wxDocument::Save()
 223 {
 224     bool ret = FALSE;
 225
 226     if (!IsModified()) return TRUE;
 227     if (m_documentFile == wxT("") || !m_savedYet)
 228         ret = SaveAs();
 229     else
 230         ret = OnSaveDocument(m_documentFile);
 231     if ( ret )
 232         SetDocumentSaved(TRUE);
 233     return ret;
 234 }
 235
 236 bool wxDocument::SaveAs()
 237 {
 238     wxDocTemplate *docTemplate = GetDocumentTemplate();
 239     if (!docTemplate)
 240         return FALSE;
 241
 242     wxString tmp = wxFileSelector(_("Save as"),
 243             docTemplate->GetDirectory(),
 244             GetFilename(),
 245             docTemplate->GetDefaultExtension(),
 246             docTemplate->GetFileFilter(),
 247             wxSAVE | wxOVERWRITE_PROMPT,
 248             GetDocumentWindow());
 249
 250     if (tmp.IsEmpty())
 251         return FALSE;
 252
 253     wxString fileName(tmp);
 254     wxString path, name, ext;
 255     wxSplitPath(fileName, & path, & name, & ext);
 256
 257     if (ext.IsEmpty() || ext == wxT(""))
 258     {
 259         fileName += ".";
 260         fileName += docTemplate->GetDefaultExtension();
 261     }
 262
 263     SetFilename(fileName);
 264     SetTitle(wxFileNameFromPath(fileName));
 265
 266     GetDocumentManager()->AddFileToHistory(fileName);
 267
 268     // Notify the views that the filename has changed
 269     wxNode *node = m_documentViews.First();
 270     while (node)
 271     {
 272         wxView *view = (wxView *)node->Data();
 273         view->OnChangeFilename();
 274         node = node->Next();
 275     }
 276
 277     return OnSaveDocument(m_documentFile);
 278 }
 279
 280 bool wxDocument::OnSaveDocument(const wxString& file)
 281 {
 282     if ( !file )
 283         return FALSE;
 284
 285     wxString msgTitle;
 286     if (wxTheApp->GetAppName() != wxT(""))
 287         msgTitle = wxTheApp->GetAppName();
 288     else
 289         msgTitle = wxString(_("File error"));
 290
 291 #if wxUSE_STD_IOSTREAM
 292     ofstream store(wxString(file.fn_str()));
 293     if (store.fail() || store.bad())
 294 #else
 295     wxFileOutputStream store(wxString(file.fn_str()));
 296     if (store.LastError() != 0)
 297 #endif
 298     {
 299         (void)wxMessageBox(_("Sorry, could not open this file for saving."), msgTitle, wxOK | wxICON_EXCLAMATION,
 300                            GetDocumentWindow());
 301         // Saving error
 302         return FALSE;
 303     }
 304     if (!SaveObject(store))
 305     {
 306         (void)wxMessageBox(_("Sorry, could not save this file."), msgTitle, wxOK | wxICON_EXCLAMATION,
 307                            GetDocumentWindow());
 308         // Saving error
 309         return FALSE;
 310     }
 311     Modify(FALSE);
 312     SetFilename(file);
 313     return TRUE;
 314 }
 315
 316 bool wxDocument::OnOpenDocument(const wxString& file)
 317 {
 318     if (!OnSaveModified())
 319         return FALSE;
 320
 321     wxString msgTitle;
 322     if (wxTheApp->GetAppName() != wxT(""))
 323         msgTitle = wxTheApp->GetAppName();
 324     else
 325         msgTitle = wxString(_("File error"));
 326
 327 #if wxUSE_STD_IOSTREAM
 328     ifstream store(wxString(file.fn_str()));
 329     if (store.fail() || store.bad())
 330 #else
 331     wxFileInputStream store(wxString(file.fn_str()));
 332     if (store.LastError() != 0)
 333 #endif
 334     {
 335         (void)wxMessageBox(_("Sorry, could not open this file."), msgTitle, wxOK|wxICON_EXCLAMATION,
 336                            GetDocumentWindow());
 337         return FALSE;
 338     }
 339     if (!LoadObject(store))
 340     {
 341         (void)wxMessageBox(_("Sorry, could not open this file."), msgTitle, wxOK|wxICON_EXCLAMATION,
 342                            GetDocumentWindow());
 343         return FALSE;
 344     }
 345     SetFilename(file, TRUE);
 346     Modify(FALSE);
 347     m_savedYet = TRUE;
 348
 349     UpdateAllViews();
 350
 351     return TRUE;
 352 }
 353
 354 #if wxUSE_STD_IOSTREAM
 355 istream& wxDocument::LoadObject(istream& stream)
 356 #else
 357 wxInputStream& wxDocument::LoadObject(wxInputStream& stream)
 358 #endif
 359 {
 360     return stream;
 361 }
 362
 363 #if wxUSE_STD_IOSTREAM
 364 ostream& wxDocument::SaveObject(ostream& stream)
 365 #else
 366 wxOutputStream& wxDocument::SaveObject(wxOutputStream& stream)
 367 #endif
 368 {
 369     return stream;
 370 }
 371
 372 bool wxDocument::Revert()
 373 {
 374     return FALSE;
 375 }
 376
 377
 378 // Get title, or filename if no title, else unnamed
 379 bool wxDocument::GetPrintableName(wxString& buf) const
 380 {
 381     if (m_documentTitle != wxT(""))
 382     {
 383         buf = m_documentTitle;
 384         return TRUE;
 385     }
 386     else if (m_documentFile != wxT(""))
 387     {
 388         buf = wxFileNameFromPath(m_documentFile);
 389         return TRUE;
 390     }
 391     else
 392     {
 393         buf = _("unnamed");
 394         return TRUE;
 395     }
 396 }
 397
 398 wxWindow *wxDocument::GetDocumentWindow() const
 399 {
 400     wxView *view = GetFirstView();
 401     if (view)
 402         return view->GetFrame();
 403     else
 404         return wxTheApp->GetTopWindow();
 405 }
 406
 407 wxCommandProcessor *wxDocument::OnCreateCommandProcessor()
 408 {
 409     return new wxCommandProcessor;
 410 }
 411
 412 // TRUE if safe to close
 413 bool wxDocument::OnSaveModified()
 414 {
 415     if (IsModified())
 416     {
 417         wxString title;
 418         GetPrintableName(title);
 419
 420         wxString msgTitle;
 421         if (wxTheApp->GetAppName() != wxT(""))
 422             msgTitle = wxTheApp->GetAppName();
 423         else
 424             msgTitle = wxString(_("Warning"));
 425
 426         wxString prompt;
 427         prompt.Printf(_("Do you want to save changes to document %s?"),
 428                 (const wxChar *)title);
 429         int res = wxMessageBox(prompt, msgTitle,
 430                 wxYES_NO|wxCANCEL|wxICON_QUESTION,
 431                 GetDocumentWindow());
 432         if (res == wxNO)
 433         {
 434             Modify(FALSE);
 435             return TRUE;
 436         }
 437         else if (res == wxYES)
 438             return Save();
 439         else if (res == wxCANCEL)
 440             return FALSE;
 441     }
 442     return TRUE;
 443 }
 444
 445 bool wxDocument::Draw(wxDC& WXUNUSED(context))
 446 {
 447     return TRUE;
 448 }
 449
 450 bool wxDocument::AddView(wxView *view)
 451 {
 452     if (!m_documentViews.Member(view))
 453     {
 454         m_documentViews.Append(view);
 455         OnChangedViewList();
 456     }
 457     return TRUE;
 458 }
 459
 460 bool wxDocument::RemoveView(wxView *view)
 461 {
 462     (void)m_documentViews.DeleteObject(view);
 463     OnChangedViewList();
 464     return TRUE;
 465 }
 466
 467 bool wxDocument::OnCreate(const wxString& WXUNUSED(path), long flags)
 468 {
 469     if (GetDocumentTemplate()->CreateView(this, flags))
 470         return TRUE;
 471     else
 472         return FALSE;
 473 }
 474
 475 // Called after a view is added or removed.
 476 // The default implementation deletes the document if
 477 // there are no more views.
 478 void wxDocument::OnChangedViewList()
 479 {
 480     if (m_documentViews.Number() == 0)
 481     {
 482         if (OnSaveModified())
 483         {
 484             delete this;
 485         }
 486     }
 487 }
 488
 489 void wxDocument::UpdateAllViews(wxView *sender, wxObject *hint)
 490 {
 491     wxNode *node = m_documentViews.First();
 492     while (node)
 493     {
 494         wxView *view = (wxView *)node->Data();
 495         view->OnUpdate(sender, hint);
 496         node = node->Next();
 497     }
 498 }
 499
 500 void wxDocument::SetFilename(const wxString& filename, bool notifyViews)
 501 {
 502     m_documentFile = filename;
 503     if ( notifyViews )
 504     {
 505         // Notify the views that the filename has changed
 506         wxNode *node = m_documentViews.First();
 507         while (node)
 508         {
 509             wxView *view = (wxView *)node->Data();
 510             view->OnChangeFilename();
 511             node = node->Next();
 512         }
 513     }
 514 }
 515
 516 // ----------------------------------------------------------------------------
 517 // Document view
 518 // ----------------------------------------------------------------------------
 519
 520 wxView::wxView()
 521 {
 522     //  SetDocument(doc);
 523     m_viewDocument = (wxDocument*) NULL;
 524
 525     m_viewTypeName = "";
 526     m_viewFrame = (wxFrame *) NULL;
 527 }
 528
 529 wxView::~wxView()
 530 {
 531     GetDocumentManager()->ActivateView(this, FALSE, TRUE);
 532     m_viewDocument->RemoveView(this);
 533 }
 534
 535 // Extend event processing to search the document's event table
 536 bool wxView::ProcessEvent(wxEvent& event)
 537 {
 538     if ( !GetDocument() || !GetDocument()->ProcessEvent(event) )
 539         return wxEvtHandler::ProcessEvent(event);
 540     else
 541         return TRUE;
 542 }
 543
 544 void wxView::OnActivateView(bool WXUNUSED(activate), wxView *WXUNUSED(activeView), wxView *WXUNUSED(deactiveView))
 545 {
 546 }
 547
 548 void wxView::OnPrint(wxDC *dc, wxObject *WXUNUSED(info))
 549 {
 550     OnDraw(dc);
 551 }
 552
 553 void wxView::OnUpdate(wxView *WXUNUSED(sender), wxObject *WXUNUSED(hint))
 554 {
 555 }
 556
 557 void wxView::OnChangeFilename()
 558 {
 559     if (GetFrame() && GetDocument())
 560     {
 561         wxString name;
 562         GetDocument()->GetPrintableName(name);
 563
 564         GetFrame()->SetTitle(name);
 565     }
 566 }
 567
 568 void wxView::SetDocument(wxDocument *doc)
 569 {
 570     m_viewDocument = doc;
 571     if (doc)
 572         doc->AddView(this);
 573 }
 574
 575 bool wxView::Close(bool deleteWindow)
 576 {
 577     if (OnClose(deleteWindow))
 578         return TRUE;
 579     else
 580         return FALSE;
 581 }
 582
 583 void wxView::Activate(bool activate)
 584 {
 585     if (GetDocumentManager())
 586     {
 587         OnActivateView(activate, this, GetDocumentManager()->GetCurrentView());
 588         GetDocumentManager()->ActivateView(this, activate);
 589     }
 590 }
 591
 592 bool wxView::OnClose(bool WXUNUSED(deleteWindow))
 593 {
 594     return GetDocument() ? GetDocument()->Close() : TRUE;
 595 }
 596
 597 #if wxUSE_PRINTING_ARCHITECTURE
 598 wxPrintout *wxView::OnCreatePrintout()
 599 {
 600     return new wxDocPrintout(this);
 601 }
 602 #endif // wxUSE_PRINTING_ARCHITECTURE
 603
 604 // ----------------------------------------------------------------------------
 605 // wxDocTemplate
 606 // ----------------------------------------------------------------------------
 607
 608 wxDocTemplate::wxDocTemplate(wxDocManager *manager,
 609                              const wxString& descr,
 610                              const wxString& filter,
 611                              const wxString& dir,
 612                              const wxString& ext,
 613                              const wxString& docTypeName,
 614                              const wxString& viewTypeName,
 615                              wxClassInfo *docClassInfo,
 616                              wxClassInfo *viewClassInfo,
 617                              long flags)
 618 {
 619     m_documentManager = manager;
 620     m_description = descr;
 621     m_directory = dir;
 622     m_defaultExt = ext;
 623     m_fileFilter = filter;
 624     m_flags = flags;
 625     m_docTypeName = docTypeName;
 626     m_viewTypeName = viewTypeName;
 627     m_documentManager->AssociateTemplate(this);
 628
 629     m_docClassInfo = docClassInfo;
 630     m_viewClassInfo = viewClassInfo;
 631 }
 632
 633 wxDocTemplate::~wxDocTemplate()
 634 {
 635     m_documentManager->DisassociateTemplate(this);
 636 }
 637
 638 // Tries to dynamically construct an object of the right class.
 639 wxDocument *wxDocTemplate::CreateDocument(const wxString& path, long flags)
 640 {
 641     if (!m_docClassInfo)
 642         return (wxDocument *) NULL;
 643     wxDocument *doc = (wxDocument *)m_docClassInfo->CreateObject();
 644     doc->SetFilename(path);
 645     doc->SetDocumentTemplate(this);
 646     GetDocumentManager()->AddDocument(doc);
 647     doc->SetCommandProcessor(doc->OnCreateCommandProcessor());
 648
 649     if (doc->OnCreate(path, flags))
 650         return doc;
 651     else
 652     {
 653         delete doc;
 654         return (wxDocument *) NULL;
 655     }
 656 }
 657
 658 wxView *wxDocTemplate::CreateView(wxDocument *doc, long flags)
 659 {
 660     if (!m_viewClassInfo)
 661         return (wxView *) NULL;
 662     wxView *view = (wxView *)m_viewClassInfo->CreateObject();
 663     view->SetDocument(doc);
 664     if (view->OnCreate(doc, flags))
 665     {
 666         return view;
 667     }
 668     else
 669     {
 670         delete view;
 671         return (wxView *) NULL;
 672     }
 673 }
 674
 675 // The default (very primitive) format detection: check is the extension is
 676 // that of the template
 677 bool wxDocTemplate::FileMatchesTemplate(const wxString& path)
 678 {
 679     return GetDefaultExtension().IsSameAs(FindExtension(path));
 680 }
 681
 682 // ----------------------------------------------------------------------------
 683 // wxDocManager
 684 // ----------------------------------------------------------------------------
 685
 686 BEGIN_EVENT_TABLE(wxDocManager, wxEvtHandler)
 687     EVT_MENU(wxID_OPEN, wxDocManager::OnFileOpen)
 688     EVT_MENU(wxID_CLOSE, wxDocManager::OnFileClose)
 689     EVT_MENU(wxID_REVERT, wxDocManager::OnFileRevert)
 690     EVT_MENU(wxID_NEW, wxDocManager::OnFileNew)
 691     EVT_MENU(wxID_SAVE, wxDocManager::OnFileSave)
 692     EVT_MENU(wxID_SAVEAS, wxDocManager::OnFileSaveAs)
 693     EVT_MENU(wxID_UNDO, wxDocManager::OnUndo)
 694     EVT_MENU(wxID_REDO, wxDocManager::OnRedo)
 695 #if wxUSE_PRINTING_ARCHITECTURE
 696     EVT_MENU(wxID_PRINT, wxDocManager::OnPrint)
 697     EVT_MENU(wxID_PRINT_SETUP, wxDocManager::OnPrintSetup)
 698     EVT_MENU(wxID_PREVIEW, wxDocManager::OnPreview)
 699 #endif
 700 END_EVENT_TABLE()
 701
 702 wxDocManager::wxDocManager(long flags, bool initialize)
 703 {
 704     m_defaultDocumentNameCounter = 1;
 705     m_flags = flags;
 706     m_currentView = (wxView *) NULL;
 707     m_maxDocsOpen = 10000;
 708     m_fileHistory = (wxFileHistory *) NULL;
 709     m_lastDirectory = wxT("") ;
 710     if (initialize)
 711         Initialize();
 712 }
 713
 714 wxDocManager::~wxDocManager()
 715 {
 716     Clear();
 717     if (m_fileHistory)
 718         delete m_fileHistory;
 719 }
 720
 721 bool wxDocManager::Clear(bool force)
 722 {
 723     wxNode *node = m_docs.First();
 724     while (node)
 725     {
 726         wxDocument *doc = (wxDocument *)node->Data();
 727         wxNode *next = node->Next();
 728
 729         if (!doc->Close() && !force)
 730             return FALSE;
 731
 732         // Implicitly deletes the document when the last
 733         // view is removed (deleted)
 734         doc->DeleteAllViews();
 735
 736         // Check document is deleted
 737         if (m_docs.Member(doc))
 738             delete doc;
 739
 740         // This assumes that documents are not connected in
 741         // any way, i.e. deleting one document does NOT
 742         // delete another.
 743         node = next;
 744     }
 745     node = m_templates.First();
 746     while (node)
 747     {
 748         wxDocTemplate *templ = (wxDocTemplate*) node->Data();
 749         wxNode* next = node->Next();
 750         delete templ;
 751         node = next;
 752     }
 753     return TRUE;
 754 }
 755
 756 bool wxDocManager::Initialize()
 757 {
 758     m_fileHistory = OnCreateFileHistory();
 759     return TRUE;
 760 }
 761
 762 wxFileHistory *wxDocManager::OnCreateFileHistory()
 763 {
 764     return new wxFileHistory;
 765 }
 766
 767 void wxDocManager::OnFileClose(wxCommandEvent& WXUNUSED(event))
 768 {
 769     wxDocument *doc = GetCurrentDocument();
 770     if (!doc)
 771         return;
 772     if (doc->Close())
 773     {
 774         doc->DeleteAllViews();
 775         if (m_docs.Member(doc))
 776             delete doc;
 777     }
 778 }
 779
 780 void wxDocManager::OnFileNew(wxCommandEvent& WXUNUSED(event))
 781 {
 782     CreateDocument(wxString(""), wxDOC_NEW);
 783 }
 784
 785 void wxDocManager::OnFileOpen(wxCommandEvent& WXUNUSED(event))
 786 {
 787     CreateDocument(wxString(""), 0);
 788 }
 789
 790 void wxDocManager::OnFileRevert(wxCommandEvent& WXUNUSED(event))
 791 {
 792     wxDocument *doc = GetCurrentDocument();
 793     if (!doc)
 794         return;
 795     doc->Revert();
 796 }
 797
 798 void wxDocManager::OnFileSave(wxCommandEvent& WXUNUSED(event))
 799 {
 800     wxDocument *doc = GetCurrentDocument();
 801     if (!doc)
 802         return;
 803     doc->Save();
 804 }
 805
 806 void wxDocManager::OnFileSaveAs(wxCommandEvent& WXUNUSED(event))
 807 {
 808     wxDocument *doc = GetCurrentDocument();
 809     if (!doc)
 810         return;
 811     doc->SaveAs();
 812 }
 813
 814 void wxDocManager::OnPrint(wxCommandEvent& WXUNUSED(event))
 815 {
 816 #if wxUSE_PRINTING_ARCHITECTURE
 817     wxView *view = GetCurrentView();
 818     if (!view)
 819         return;
 820
 821     wxPrintout *printout = view->OnCreatePrintout();
 822     if (printout)
 823     {
 824         wxPrinter printer;
 825         printer.Print(view->GetFrame(), printout, TRUE);
 826
 827         delete printout;
 828     }
 829 #endif // wxUSE_PRINTING_ARCHITECTURE
 830 }
 831
 832 void wxDocManager::OnPrintSetup(wxCommandEvent& WXUNUSED(event))
 833 {
 834 #if wxUSE_PRINTING_ARCHITECTURE
 835     wxWindow *parentWin = wxTheApp->GetTopWindow();
 836     wxView *view = GetCurrentView();
 837     if (view)
 838         parentWin = view->GetFrame();
 839
 840     wxPrintDialogData data;
 841
 842     wxPrintDialog printerDialog(parentWin, &data);
 843     printerDialog.GetPrintDialogData().SetSetupDialog(TRUE);
 844     printerDialog.ShowModal();
 845 #endif // wxUSE_PRINTING_ARCHITECTURE
 846 }
 847
 848 void wxDocManager::OnPreview(wxCommandEvent& WXUNUSED(event))
 849 {
 850 #if wxUSE_PRINTING_ARCHITECTURE
 851     wxView *view = GetCurrentView();
 852     if (!view)
 853         return;
 854
 855     wxPrintout *printout = view->OnCreatePrintout();
 856     if (printout)
 857     {
 858         // Pass two printout objects: for preview, and possible printing.
 859         wxPrintPreviewBase *preview = (wxPrintPreviewBase *) NULL;
 860         preview = new wxPrintPreview(printout, view->OnCreatePrintout());
 861
 862         wxPreviewFrame *frame = new wxPreviewFrame(preview, (wxFrame *)wxTheApp->GetTopWindow(), _("Print Preview"),
 863                 wxPoint(100, 100), wxSize(600, 650));
 864         frame->Centre(wxBOTH);
 865         frame->Initialize();
 866         frame->Show(TRUE);
 867     }
 868 #endif // wxUSE_PRINTING_ARCHITECTURE
 869 }
 870
 871 void wxDocManager::OnUndo(wxCommandEvent& WXUNUSED(event))
 872 {
 873     wxDocument *doc = GetCurrentDocument();
 874     if (!doc)
 875         return;
 876     if (doc->GetCommandProcessor())
 877         doc->GetCommandProcessor()->Undo();
 878 }
 879
 880 void wxDocManager::OnRedo(wxCommandEvent& WXUNUSED(event))
 881 {
 882     wxDocument *doc = GetCurrentDocument();
 883     if (!doc)
 884         return;
 885     if (doc->GetCommandProcessor())
 886         doc->GetCommandProcessor()->Redo();
 887 }
 888
 889 wxView *wxDocManager::GetCurrentView() const
 890 {
 891     if (m_currentView)
 892         return m_currentView;
 893     if (m_docs.Number() == 1)
 894     {
 895         wxDocument* doc = (wxDocument*) m_docs.First()->Data();
 896         return doc->GetFirstView();
 897     }
 898     return (wxView *) NULL;
 899 }
 900
 901 // Extend event processing to search the view's event table
 902 bool wxDocManager::ProcessEvent(wxEvent& event)
 903 {
 904     wxView* view = GetCurrentView();
 905     if (view)
 906     {
 907         if (view->ProcessEvent(event))
 908             return TRUE;
 909     }
 910     return wxEvtHandler::ProcessEvent(event);
 911 }
 912
 913 wxDocument *wxDocManager::CreateDocument(const wxString& path, long flags)
 914 {
 915     wxDocTemplate **templates = new wxDocTemplate *[m_templates.Number()];
 916     int i;
 917     int n = 0;
 918     for (i = 0; i < m_templates.Number(); i++)
 919     {
 920         wxDocTemplate *temp = (wxDocTemplate *)(m_templates.Nth(i)->Data());
 921         if (temp->IsVisible())
 922         {
 923             templates[n] = temp;
 924             n ++;
 925         }
 926     }
 927     if (n == 0)
 928     {
 929         delete[] templates;
 930         return (wxDocument *) NULL;
 931     }
 932
 933     // If we've reached the max number of docs, close the
 934     // first one.
 935     if (GetDocuments().Number() >= m_maxDocsOpen)
 936     {
 937         wxDocument *doc = (wxDocument *)GetDocuments().First()->Data();
 938         if (doc->Close())
 939         {
 940             // Implicitly deletes the document when
 941             // the last view is deleted
 942             doc->DeleteAllViews();
 943
 944             // Check we're really deleted
 945             if (m_docs.Member(doc))
 946                 delete doc;
 947         }
 948         else
 949             return (wxDocument *) NULL;
 950     }
 951
 952     // New document: user chooses a template, unless there's only one.
 953     if (flags & wxDOC_NEW)
 954     {
 955         if (n == 1)
 956         {
 957             wxDocTemplate *temp = templates[0];
 958             delete[] templates;
 959             wxDocument *newDoc = temp->CreateDocument(path, flags);
 960             if (newDoc)
 961             {
 962                 newDoc->SetDocumentName(temp->GetDocumentName());
 963                 newDoc->SetDocumentTemplate(temp);
 964                 newDoc->OnNewDocument();
 965             }
 966             return newDoc;
 967         }
 968
 969         wxDocTemplate *temp = SelectDocumentType(templates, n);
 970         delete[] templates;
 971         if (temp)
 972         {
 973             wxDocument *newDoc = temp->CreateDocument(path, flags);
 974             if (newDoc)
 975             {
 976                 newDoc->SetDocumentName(temp->GetDocumentName());
 977                 newDoc->SetDocumentTemplate(temp);
 978                 newDoc->OnNewDocument();
 979             }
 980             return newDoc;
 981         }
 982         else
 983             return (wxDocument *) NULL;
 984     }
 985
 986     // Existing document
 987     wxDocTemplate *temp = (wxDocTemplate *) NULL;
 988
 989     wxString path2(wxT(""));
 990     if (path != wxT(""))
 991         path2 = path;
 992
 993     if (flags & wxDOC_SILENT)
 994         temp = FindTemplateForPath(path2);
 995     else
 996         temp = SelectDocumentPath(templates, n, path2, flags);
 997
 998     delete[] templates;
 999
1000     if (temp)
1001     {
1002         wxDocument *newDoc = temp->CreateDocument(path2, flags);
1003         if (newDoc)
1004         {
1005             newDoc->SetDocumentName(temp->GetDocumentName());
1006             newDoc->SetDocumentTemplate(temp);
1007             if (!newDoc->OnOpenDocument(path2))
1008             {
1009                 delete newDoc;
1010                 return (wxDocument *) NULL;
1011             }
1012             AddFileToHistory(path2);
1013         }
1014         return newDoc;
1015     }
1016     else
1017         return (wxDocument *) NULL;
1018 }
1019
1020 wxView *wxDocManager::CreateView(wxDocument *doc, long flags)
1021 {
1022     wxDocTemplate **templates = new wxDocTemplate *[m_templates.Number()];
1023     int n =0;
1024     int i;
1025     for (i = 0; i < m_templates.Number(); i++)
1026     {
1027         wxDocTemplate *temp = (wxDocTemplate *)(m_templates.Nth(i)->Data());
1028         if (temp->IsVisible())
1029         {
1030             if (temp->GetDocumentName() == doc->GetDocumentName())
1031             {
1032                 templates[n] = temp;
1033                 n ++;
1034             }
1035         }
1036     }
1037     if (n == 0)
1038     {
1039         delete[] templates;
1040         return (wxView *) NULL;
1041     }
1042     if (n == 1)
1043     {
1044         wxDocTemplate *temp = templates[0];
1045         delete[] templates;
1046         wxView *view = temp->CreateView(doc, flags);
1047         if (view)
1048             view->SetViewName(temp->GetViewName());
1049         return view;
1050     }
1051
1052     wxDocTemplate *temp = SelectViewType(templates, n);
1053     delete[] templates;
1054     if (temp)
1055     {
1056         wxView *view = temp->CreateView(doc, flags);
1057         if (view)
1058             view->SetViewName(temp->GetViewName());
1059         return view;
1060     }
1061     else
1062         return (wxView *) NULL;
1063 }
1064
1065 // Not yet implemented
1066 void wxDocManager::DeleteTemplate(wxDocTemplate *WXUNUSED(temp), long WXUNUSED(flags))
1067 {
1068 }
1069
1070 // Not yet implemented
1071 bool wxDocManager::FlushDoc(wxDocument *WXUNUSED(doc))
1072 {
1073     return FALSE;
1074 }
1075
1076 wxDocument *wxDocManager::GetCurrentDocument() const
1077 {
1078     if (m_currentView)
1079         return m_currentView->GetDocument();
1080     else
1081         return (wxDocument *) NULL;
1082 }
1083
1084 // Make a default document name
1085 bool wxDocManager::MakeDefaultName(wxString& name)
1086 {
1087     name.Printf(_("unnamed%d"), m_defaultDocumentNameCounter);
1088     m_defaultDocumentNameCounter++;
1089
1090     return TRUE;
1091 }
1092
1093 // Not yet implemented
1094 wxDocTemplate *wxDocManager::MatchTemplate(const wxString& WXUNUSED(path))
1095 {
1096     return (wxDocTemplate *) NULL;
1097 }
1098
1099 // File history management
1100 void wxDocManager::AddFileToHistory(const wxString& file)
1101 {
1102     if (m_fileHistory)
1103         m_fileHistory->AddFileToHistory(file);
1104 }
1105
1106 void wxDocManager::RemoveFileFromHistory(int i)
1107 {
1108     if (m_fileHistory)
1109         m_fileHistory->RemoveFileFromHistory(i);
1110 }
1111
1112 wxString wxDocManager::GetHistoryFile(int i) const
1113 {
1114     wxString histFile;
1115
1116     if (m_fileHistory)
1117         histFile = m_fileHistory->GetHistoryFile(i);
1118
1119     return histFile;
1120 }
1121
1122 void wxDocManager::FileHistoryUseMenu(wxMenu *menu)
1123 {
1124     if (m_fileHistory)
1125         m_fileHistory->UseMenu(menu);
1126 }
1127
1128 void wxDocManager::FileHistoryRemoveMenu(wxMenu *menu)
1129 {
1130     if (m_fileHistory)
1131         m_fileHistory->RemoveMenu(menu);
1132 }
1133
1134 #if wxUSE_CONFIG
1135 void wxDocManager::FileHistoryLoad(wxConfigBase& config)
1136 {
1137     if (m_fileHistory)
1138         m_fileHistory->Load(config);
1139 }
1140
1141 void wxDocManager::FileHistorySave(wxConfigBase& config)
1142 {
1143     if (m_fileHistory)
1144         m_fileHistory->Save(config);
1145 }
1146 #endif
1147
1148 void wxDocManager::FileHistoryAddFilesToMenu(wxMenu* menu)
1149 {
1150     if (m_fileHistory)
1151         m_fileHistory->AddFilesToMenu(menu);
1152 }
1153
1154 void wxDocManager::FileHistoryAddFilesToMenu()
1155 {
1156     if (m_fileHistory)
1157         m_fileHistory->AddFilesToMenu();
1158 }
1159
1160 int wxDocManager::GetNoHistoryFiles() const
1161 {
1162     if (m_fileHistory)
1163         return m_fileHistory->GetNoHistoryFiles();
1164     else
1165         return 0;
1166 }
1167
1168
1169 // Find out the document template via matching in the document file format
1170 // against that of the template
1171 wxDocTemplate *wxDocManager::FindTemplateForPath(const wxString& path)
1172 {
1173     wxDocTemplate *theTemplate = (wxDocTemplate *) NULL;
1174
1175     // Find the template which this extension corresponds to
1176     int i;
1177     for (i = 0; i < m_templates.Number(); i++)
1178     {
1179         wxDocTemplate *temp = (wxDocTemplate *)m_templates.Nth(i)->Data();
1180         if ( temp->FileMatchesTemplate(path) )
1181         {
1182             theTemplate = temp;
1183             break;
1184         }
1185     }
1186     return theTemplate;
1187 }
1188
1189 // Prompts user to open a file, using file specs in templates.
1190 // How to implement in wxWindows? Must extend the file selector
1191 // dialog or implement own; OR match the extension to the
1192 // template extension.
1193
1194 wxDocTemplate *wxDocManager::SelectDocumentPath(wxDocTemplate **templates,
1195 #ifdef __WXMSW__
1196                                                 int noTemplates,
1197 #else
1198                                                 int WXUNUSED(noTemplates),
1199 #endif
1200                                                 wxString& path,
1201                                                 long WXUNUSED(flags),
1202                                                 bool WXUNUSED(save))
1203 {
1204     // We can only have multiple filters in Windows
1205 #ifdef __WXMSW__
1206     wxString descrBuf;
1207
1208     int i;
1209     for (i = 0; i < noTemplates; i++)
1210     {
1211         if (templates[i]->IsVisible())
1212         {
1213             // add a '|' to separate this filter from the previous one
1214             if ( !descrBuf.IsEmpty() )
1215                 descrBuf << wxT('|');
1216
1217             descrBuf << templates[i]->GetDescription()
1218                 << wxT(" (") << templates[i]->GetFileFilter() << wxT(") |")
1219                 << templates[i]->GetFileFilter();
1220         }
1221     }
1222 #else
1223     wxString descrBuf = wxT("*.*");
1224 #endif
1225
1226     int FilterIndex = 0;
1227     wxString pathTmp = wxFileSelectorEx(_("Select a file"),
1228                                         m_lastDirectory,
1229                                         wxT(""),
1230                                         &FilterIndex,
1231                                         descrBuf,
1232                                         0,
1233                                         wxTheApp->GetTopWindow());
1234
1235     if (!pathTmp.IsEmpty())
1236     {
1237         m_lastDirectory = wxPathOnly(pathTmp);
1238
1239         path = pathTmp;
1240         wxString theExt = FindExtension(path);
1241         if (!theExt)
1242             return (wxDocTemplate *) NULL;
1243
1244         // This is dodgy in that we're selecting the template on the
1245         // basis of the file extension, which may not be a standard
1246         // one. We really want to know exactly which template was
1247         // chosen by using a more advanced file selector.
1248         wxDocTemplate *theTemplate = FindTemplateForPath(path);
1249         if ( !theTemplate )
1250             theTemplate = templates[FilterIndex];
1251
1252         return theTemplate;
1253     }
1254     else
1255     {
1256         path = wxT("");
1257         return (wxDocTemplate *) NULL;
1258     }
1259 #if 0
1260     // In all other windowing systems, until we have more advanced
1261     // file selectors, we must select the document type (template) first, and
1262     // _then_ pop up the file selector.
1263     wxDocTemplate *temp = SelectDocumentType(templates, noTemplates);
1264     if (!temp)
1265         return (wxDocTemplate *) NULL;
1266
1267     wxChar *pathTmp = wxFileSelector(_("Select a file"), wxT(""), wxT(""),
1268             temp->GetDefaultExtension(),
1269             temp->GetFileFilter(),
1270             0, wxTheApp->GetTopWindow());
1271
1272     if (pathTmp)
1273     {
1274         path = pathTmp;
1275         return temp;
1276     }
1277     else
1278         return (wxDocTemplate *) NULL;
1279 #endif // 0
1280 }
1281
1282 wxDocTemplate *wxDocManager::SelectDocumentType(wxDocTemplate **templates,
1283                                                 int noTemplates)
1284 {
1285     wxChar **strings = new wxChar *[noTemplates];
1286     wxChar **data = new wxChar *[noTemplates];
1287     int i;
1288     int n = 0;
1289     for (i = 0; i < noTemplates; i++)
1290     {
1291         if (templates[i]->IsVisible())
1292         {
1293             strings[n] = (wxChar *)templates[i]->m_description.c_str();
1294             data[n] = (wxChar *)templates[i];
1295             n ++;
1296         }
1297     }
1298     if (n == 0)
1299     {
1300         delete[] strings;
1301         delete[] data;
1302         return (wxDocTemplate *) NULL;
1303     }
1304     else if (n == 1)
1305     {
1306         wxDocTemplate *temp = (wxDocTemplate *)data[0];
1307         delete[] strings;
1308         delete[] data;
1309         return temp;
1310     }
1311
1312     wxDocTemplate *theTemplate = (wxDocTemplate *)wxGetSingleChoiceData(_("Select a document template"), _("Templates"), n,
1313             strings, (char **)data);
1314     delete[] strings;
1315     delete[] data;
1316     return theTemplate;
1317 }
1318
1319 wxDocTemplate *wxDocManager::SelectViewType(wxDocTemplate **templates,
1320         int noTemplates)
1321 {
1322     wxChar **strings = new wxChar *[noTemplates];
1323     wxChar **data = new wxChar *[noTemplates];
1324     int i;
1325     int n = 0;
1326     for (i = 0; i < noTemplates; i++)
1327     {
1328         if (templates[i]->IsVisible() && (templates[i]->GetViewName() != wxT("")))
1329         {
1330             strings[n] = (wxChar *)templates[i]->m_viewTypeName.c_str();
1331             data[n] = (wxChar *)templates[i];
1332             n ++;
1333         }
1334     }
1335     wxDocTemplate *theTemplate = (wxDocTemplate *)wxGetSingleChoiceData(_("Select a document view"), _("Views"), n,
1336             strings, (char **)data);
1337     delete[] strings;
1338     delete[] data;
1339     return theTemplate;
1340 }
1341
1342 void wxDocManager::AssociateTemplate(wxDocTemplate *temp)
1343 {
1344     if (!m_templates.Member(temp))
1345         m_templates.Append(temp);
1346 }
1347
1348 void wxDocManager::DisassociateTemplate(wxDocTemplate *temp)
1349 {
1350     m_templates.DeleteObject(temp);
1351 }
1352
1353 // Add and remove a document from the manager's list
1354 void wxDocManager::AddDocument(wxDocument *doc)
1355 {
1356     if (!m_docs.Member(doc))
1357         m_docs.Append(doc);
1358 }
1359
1360 void wxDocManager::RemoveDocument(wxDocument *doc)
1361 {
1362     m_docs.DeleteObject(doc);
1363 }
1364
1365 // Views or windows should inform the document manager
1366 // when a view is going in or out of focus
1367 void wxDocManager::ActivateView(wxView *view, bool activate, bool WXUNUSED(deleting))
1368 {
1369     // If we're deactiving, and if we're not actually deleting the view, then
1370     // don't reset the current view because we may be going to
1371     // a window without a view.
1372     // WHAT DID I MEAN BY THAT EXACTLY?
1373     /*
1374        if (deleting)
1375        {
1376        if (m_currentView == view)
1377        m_currentView = NULL;
1378        }
1379        else
1380      */
1381     {
1382         if (activate)
1383             m_currentView = view;
1384         else
1385             m_currentView = (wxView *) NULL;
1386     }
1387 }
1388
1389 // ----------------------------------------------------------------------------
1390 // Default document child frame
1391 // ----------------------------------------------------------------------------
1392
1393 BEGIN_EVENT_TABLE(wxDocChildFrame, wxFrame)
1394     EVT_ACTIVATE(wxDocChildFrame::OnActivate)
1395     EVT_CLOSE(wxDocChildFrame::OnCloseWindow)
1396 END_EVENT_TABLE()
1397
1398 wxDocChildFrame::wxDocChildFrame(wxDocument *doc,
1399                                  wxView *view,
1400                                  wxFrame *frame,
1401                                  wxWindowID id,
1402                                  const wxString& title,
1403                                  const wxPoint& pos,
1404                                  const wxSize& size,
1405                                  long style,
1406                                  const wxString& name)
1407                : wxFrame(frame, id, title, pos, size, style, name)
1408 {
1409     m_childDocument = doc;
1410     m_childView = view;
1411     if (view)
1412         view->SetFrame(this);
1413 }
1414
1415 wxDocChildFrame::~wxDocChildFrame()
1416 {
1417 }
1418
1419 // Extend event processing to search the view's event table
1420 bool wxDocChildFrame::ProcessEvent(wxEvent& event)
1421 {
1422     if (m_childView)
1423         m_childView->Activate(TRUE);
1424
1425     if ( !m_childView || ! m_childView->ProcessEvent(event) )
1426     {
1427         // Only hand up to the parent if it's a menu command
1428         if (!event.IsKindOf(CLASSINFO(wxCommandEvent)) || !GetParent() || !GetParent()->ProcessEvent(event))
1429             return wxEvtHandler::ProcessEvent(event);
1430         else
1431             return TRUE;
1432     }
1433     else
1434         return TRUE;
1435 }
1436
1437 void wxDocChildFrame::OnActivate(wxActivateEvent& event)
1438 {
1439     wxFrame::OnActivate(event);
1440
1441     if (m_childView)
1442         m_childView->Activate(event.GetActive());
1443 }
1444
1445 void wxDocChildFrame::OnCloseWindow(wxCloseEvent& event)
1446 {
1447     if (m_childView)
1448     {
1449         bool ans = FALSE;
1450         if (!event.CanVeto())
1451             ans = TRUE; // Must delete.
1452         else
1453             ans = m_childView->Close(FALSE); // FALSE means don't delete associated window
1454
1455         if (ans)
1456         {
1457             m_childView->Activate(FALSE);
1458             delete m_childView;
1459             m_childView = (wxView *) NULL;
1460             m_childDocument = (wxDocument *) NULL;
1461
1462             this->Destroy();
1463         }
1464         else
1465             event.Veto();
1466     }
1467     else
1468         event.Veto();
1469 }
1470
1471 // ----------------------------------------------------------------------------
1472 // Default parent frame
1473 // ----------------------------------------------------------------------------
1474
1475 BEGIN_EVENT_TABLE(wxDocParentFrame, wxFrame)
1476     EVT_MENU(wxID_EXIT, wxDocParentFrame::OnExit)
1477     EVT_MENU_RANGE(wxID_FILE1, wxID_FILE9, wxDocParentFrame::OnMRUFile)
1478     EVT_CLOSE(wxDocParentFrame::OnCloseWindow)
1479 END_EVENT_TABLE()
1480
1481 wxDocParentFrame::wxDocParentFrame(wxDocManager *manager,
1482                                    wxFrame *frame,
1483                                    wxWindowID id,
1484                                    const wxString& title,
1485                                    const wxPoint& pos,
1486                                    const wxSize& size,
1487                                    long style,
1488                                    const wxString& name)
1489                 : wxFrame(frame, id, title, pos, size, style, name)
1490 {
1491     m_docManager = manager;
1492 }
1493
1494 void wxDocParentFrame::OnExit(wxCommandEvent& WXUNUSED(event))
1495 {
1496     Close();
1497 }
1498
1499 void wxDocParentFrame::OnMRUFile(wxCommandEvent& event)
1500 {
1501     int n = event.GetSelection() - wxID_FILE1;  // the index in MRU list
1502     wxString filename(m_docManager->GetHistoryFile(n));
1503     if ( !filename.IsEmpty() )
1504     {
1505         // verify that the file exists before doing anything else
1506         if ( wxFile::Exists(filename) )
1507         {
1508             // try to open it
1509             (void)m_docManager->CreateDocument(filename, wxDOC_SILENT);
1510         }
1511         else
1512         {
1513             // remove the bogus filename from the MRU list and notify the user
1514             // about it
1515             m_docManager->RemoveFileFromHistory(n);
1516
1517             wxLogError(_("The file '%s' doesn't exist and couldn't be opened.\n"
1518                          "It has been also removed from the MRU files list."),
1519                        filename.c_str());
1520         }
1521     }
1522 }
1523
1524 // Extend event processing to search the view's event table
1525 bool wxDocParentFrame::ProcessEvent(wxEvent& event)
1526 {
1527     // Try the document manager, then do default processing
1528     if (!m_docManager || !m_docManager->ProcessEvent(event))
1529         return wxEvtHandler::ProcessEvent(event);
1530     else
1531         return TRUE;
1532 }
1533
1534 // Define the behaviour for the frame closing
1535 // - must delete all frames except for the main one.
1536 void wxDocParentFrame::OnCloseWindow(wxCloseEvent& event)
1537 {
1538     if (m_docManager->Clear(!event.CanVeto()))
1539     {
1540         this->Destroy();
1541     }
1542     else
1543         event.Veto();
1544 }
1545
1546 #if wxUSE_PRINTING_ARCHITECTURE
1547
1548 wxDocPrintout::wxDocPrintout(wxView *view, const wxString& title)
1549              : wxPrintout(title)
1550 {
1551     m_printoutView = view;
1552 }
1553
1554 bool wxDocPrintout::OnPrintPage(int WXUNUSED(page))
1555 {
1556     wxDC *dc = GetDC();
1557
1558     // Get the logical pixels per inch of screen and printer
1559     int ppiScreenX, ppiScreenY;
1560     GetPPIScreen(&ppiScreenX, &ppiScreenY);
1561     int ppiPrinterX, ppiPrinterY;
1562     GetPPIPrinter(&ppiPrinterX, &ppiPrinterY);
1563
1564     // This scales the DC so that the printout roughly represents the
1565     // the screen scaling. The text point size _should_ be the right size
1566     // but in fact is too small for some reason. This is a detail that will
1567     // need to be addressed at some point but can be fudged for the
1568     // moment.
1569     float scale = (float)((float)ppiPrinterX/(float)ppiScreenX);
1570
1571     // Now we have to check in case our real page size is reduced
1572     // (e.g. because we're drawing to a print preview memory DC)
1573     int pageWidth, pageHeight;
1574     int w, h;
1575     dc->GetSize(&w, &h);
1576     GetPageSizePixels(&pageWidth, &pageHeight);
1577
1578     // If printer pageWidth == current DC width, then this doesn't
1579     // change. But w might be the preview bitmap width, so scale down.
1580     float overallScale = scale * (float)(w/(float)pageWidth);
1581     dc->SetUserScale(overallScale, overallScale);
1582
1583     if (m_printoutView)
1584     {
1585         m_printoutView->OnDraw(dc);
1586     }
1587     return TRUE;
1588 }
1589
1590 bool wxDocPrintout::HasPage(int pageNum)
1591 {
1592     return (pageNum == 1);
1593 }
1594
1595 bool wxDocPrintout::OnBeginDocument(int startPage, int endPage)
1596 {
1597     if (!wxPrintout::OnBeginDocument(startPage, endPage))
1598         return FALSE;
1599
1600     return TRUE;
1601 }
1602
1603 void wxDocPrintout::GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, int *selPageTo)
1604 {
1605     *minPage = 1;
1606     *maxPage = 1;
1607     *selPageFrom = 1;
1608     *selPageTo = 1;
1609 }
1610
1611 #endif // wxUSE_PRINTING_ARCHITECTURE
1612
1613 // ----------------------------------------------------------------------------
1614 // Command processing framework
1615 // ----------------------------------------------------------------------------
1616
1617 wxCommand::wxCommand(bool canUndoIt, const wxString& name)
1618 {
1619     m_canUndo = canUndoIt;
1620     m_commandName = name;
1621 }
1622
1623 wxCommand::~wxCommand()
1624 {
1625 }
1626
1627 // Command processor
1628 wxCommandProcessor::wxCommandProcessor(int maxCommands)
1629 {
1630     m_maxNoCommands = maxCommands;
1631     m_currentCommand = (wxNode *) NULL;
1632     m_commandEditMenu = (wxMenu *) NULL;
1633 }
1634
1635 wxCommandProcessor::~wxCommandProcessor()
1636 {
1637     ClearCommands();
1638 }
1639
1640 // Pass a command to the processor. The processor calls Do();
1641 // if successful, is appended to the command history unless
1642 // storeIt is FALSE.
1643 bool wxCommandProcessor::Submit(wxCommand *command, bool storeIt)
1644 {
1645     bool success = command->Do();
1646     if (success && storeIt)
1647     {
1648         if (m_commands.Number() == m_maxNoCommands)
1649         {
1650             wxNode *firstNode = m_commands.First();
1651             wxCommand *firstCommand = (wxCommand *)firstNode->Data();
1652             delete firstCommand;
1653             delete firstNode;
1654         }
1655
1656         // Correct a bug: we must chop off the current 'branch'
1657         // so that we're at the end of the command list.
1658         if (!m_currentCommand)
1659             ClearCommands();
1660         else
1661         {
1662             wxNode *node = m_currentCommand->Next();
1663             while (node)
1664             {
1665                 wxNode *next = node->Next();
1666                 delete (wxCommand *)node->Data();
1667                 delete node;
1668                 node = next;
1669             }
1670         }
1671
1672         m_commands.Append(command);
1673         m_currentCommand = m_commands.Last();
1674         SetMenuStrings();
1675     }
1676     return success;
1677 }
1678
1679 bool wxCommandProcessor::Undo()
1680 {
1681     if (m_currentCommand)
1682     {
1683         wxCommand *command = (wxCommand *)m_currentCommand->Data();
1684         if (command->CanUndo())
1685         {
1686             bool success = command->Undo();
1687             if (success)
1688             {
1689                 m_currentCommand = m_currentCommand->Previous();
1690                 SetMenuStrings();
1691                 return TRUE;
1692             }
1693         }
1694     }
1695     return FALSE;
1696 }
1697
1698 bool wxCommandProcessor::Redo()
1699 {
1700     wxCommand *redoCommand = (wxCommand *) NULL;
1701     wxNode *redoNode = (wxNode *) NULL;
1702     if (m_currentCommand && m_currentCommand->Next())
1703     {
1704         redoCommand = (wxCommand *)m_currentCommand->Next()->Data();
1705         redoNode = m_currentCommand->Next();
1706     }
1707     else
1708     {
1709         if (m_commands.Number() > 0)
1710         {
1711             redoCommand = (wxCommand *)m_commands.First()->Data();
1712             redoNode = m_commands.First();
1713         }
1714     }
1715
1716     if (redoCommand)
1717     {
1718         bool success = redoCommand->Do();
1719         if (success)
1720         {
1721             m_currentCommand = redoNode;
1722             SetMenuStrings();
1723             return TRUE;
1724         }
1725     }
1726     return FALSE;
1727 }
1728
1729 bool wxCommandProcessor::CanUndo() const
1730 {
1731     if (m_currentCommand)
1732         return ((wxCommand *)m_currentCommand->Data())->CanUndo();
1733     return FALSE;
1734 }
1735
1736 bool wxCommandProcessor::CanRedo() const
1737 {
1738     if ((m_currentCommand != (wxNode*) NULL) && (m_currentCommand->Next() == (wxNode*) NULL))
1739         return FALSE;
1740
1741     if ((m_currentCommand != (wxNode*) NULL) && (m_currentCommand->Next() != (wxNode*) NULL))
1742         return TRUE;
1743
1744     if ((m_currentCommand == (wxNode*) NULL) && (m_commands.Number() > 0))
1745         return TRUE;
1746
1747     return FALSE;
1748 }
1749
1750 void wxCommandProcessor::Initialize()
1751 {
1752     m_currentCommand = m_commands.Last();
1753     SetMenuStrings();
1754 }
1755
1756 void wxCommandProcessor::SetMenuStrings()
1757 {
1758     if (m_commandEditMenu)
1759     {
1760         wxString buf;
1761         if (m_currentCommand)
1762         {
1763             wxCommand *command = (wxCommand *)m_currentCommand->Data();
1764             wxString commandName(command->GetName());
1765             if (commandName == wxT("")) commandName = _("Unnamed command");
1766             bool canUndo = command->CanUndo();
1767             if (canUndo)
1768                 buf = wxString(_("&Undo ")) + commandName;
1769             else
1770                 buf = wxString(_("Can't &Undo ")) + commandName;
1771
1772             m_commandEditMenu->SetLabel(wxID_UNDO, buf);
1773             m_commandEditMenu->Enable(wxID_UNDO, canUndo);
1774
1775             // We can redo, if we're not at the end of the history.
1776             if (m_currentCommand->Next())
1777             {
1778                 wxCommand *redoCommand = (wxCommand *)m_currentCommand->Next()->Data();
1779                 wxString redoCommandName(redoCommand->GetName());
1780                 if (redoCommandName == wxT("")) redoCommandName = _("Unnamed command");
1781                 buf = wxString(_("&Redo ")) + redoCommandName;
1782                 m_commandEditMenu->SetLabel(wxID_REDO, buf);
1783                 m_commandEditMenu->Enable(wxID_REDO, TRUE);
1784             }
1785             else
1786             {
1787                 m_commandEditMenu->SetLabel(wxID_REDO, _("&Redo"));
1788                 m_commandEditMenu->Enable(wxID_REDO, FALSE);
1789             }
1790         }
1791         else
1792         {
1793             m_commandEditMenu->SetLabel(wxID_UNDO, _("&Undo"));
1794             m_commandEditMenu->Enable(wxID_UNDO, FALSE);
1795
1796             if (m_commands.Number() == 0)
1797             {
1798                 m_commandEditMenu->SetLabel(wxID_REDO, _("&Redo"));
1799                 m_commandEditMenu->Enable(wxID_REDO, FALSE);
1800             }
1801             else
1802             {
1803                 // currentCommand is NULL but there are commands: this means that
1804                 // we've undone to the start of the list, but can redo the first.
1805                 wxCommand *redoCommand = (wxCommand *)m_commands.First()->Data();
1806                 wxString redoCommandName(redoCommand->GetName());
1807                 if (redoCommandName == wxT("")) redoCommandName = _("Unnamed command");
1808                 buf = wxString(_("&Redo ")) + redoCommandName;
1809                 m_commandEditMenu->SetLabel(wxID_REDO, buf);
1810                 m_commandEditMenu->Enable(wxID_REDO, TRUE);
1811             }
1812         }
1813     }
1814 }
1815
1816 void wxCommandProcessor::ClearCommands()
1817 {
1818     wxNode *node = m_commands.First();
1819     while (node)
1820     {
1821         wxCommand *command = (wxCommand *)node->Data();
1822         delete command;
1823         delete node;
1824         node = m_commands.First();
1825     }
1826     m_currentCommand = (wxNode *) NULL;
1827 }
1828
1829 // ----------------------------------------------------------------------------
1830 // File history processor
1831 // ----------------------------------------------------------------------------
1832
1833 wxFileHistory::wxFileHistory(int maxFiles)
1834 {
1835     m_fileMaxFiles = maxFiles;
1836     m_fileHistoryN = 0;
1837     m_fileHistory = new wxChar *[m_fileMaxFiles];
1838 }
1839
1840 wxFileHistory::~wxFileHistory()
1841 {
1842     int i;
1843     for (i = 0; i < m_fileHistoryN; i++)
1844         delete[] m_fileHistory[i];
1845     delete[] m_fileHistory;
1846 }
1847
1848 // File history management
1849 void wxFileHistory::AddFileToHistory(const wxString& file)
1850 {
1851     int i;
1852     // Check we don't already have this file
1853     for (i = 0; i < m_fileHistoryN; i++)
1854     {
1855         if (m_fileHistory[i] && wxString(m_fileHistory[i]) == file)
1856             return;
1857     }
1858
1859     // Add to the project file history:
1860     // Move existing files (if any) down so we can insert file at beginning.
1861
1862     // First delete filename that has popped off the end of the array (if any)
1863     if (m_fileHistoryN == m_fileMaxFiles)
1864     {
1865         delete[] m_fileHistory[m_fileMaxFiles-1];
1866         m_fileHistory[m_fileMaxFiles-1] = (wxChar *) NULL;
1867     }
1868     if (m_fileHistoryN < m_fileMaxFiles)
1869     {
1870         wxNode* node = m_fileMenus.First();
1871         while (node)
1872         {
1873             wxMenu* menu = (wxMenu*) node->Data();
1874             if (m_fileHistoryN == 0)
1875                 menu->AppendSeparator();
1876             menu->Append(wxID_FILE1+m_fileHistoryN, _("[EMPTY]"));
1877             node = node->Next();
1878         }
1879         m_fileHistoryN ++;
1880     }
1881     // Shuffle filenames down
1882     for (i = (m_fileHistoryN-1); i > 0; i--)
1883     {
1884         m_fileHistory[i] = m_fileHistory[i-1];
1885     }
1886     m_fileHistory[0] = copystring(file);
1887
1888     for (i = 0; i < m_fileHistoryN; i++)
1889         if (m_fileHistory[i])
1890         {
1891             wxString buf;
1892             buf.Printf(s_MRUEntryFormat, i+1, m_fileHistory[i]);
1893             wxNode* node = m_fileMenus.First();
1894             while (node)
1895             {
1896                 wxMenu* menu = (wxMenu*) node->Data();
1897                 menu->SetLabel(wxID_FILE1+i, buf);
1898                 node = node->Next();
1899             }
1900         }
1901 }
1902
1903 void wxFileHistory::RemoveFileFromHistory(int i)
1904 {
1905     wxCHECK_RET( i < m_fileHistoryN,
1906                  wxT("invalid index in wxFileHistory::RemoveFileFromHistory") );
1907
1908     wxNode* node = m_fileMenus.First();
1909     while ( node )
1910     {
1911         wxMenu* menu = (wxMenu*) node->Data();
1912
1913         // wxMenu::Delete() is missing from wxGTK, so this can't be done :-(
1914 #if 0
1915         // delete the menu items
1916         menu->Delete(wxID_FILE1 + i);
1917 #endif
1918
1919         // delete the element from the array (could use memmove() too...)
1920         delete [] m_fileHistory[i];
1921
1922         int j;
1923         for ( j = i; j < m_fileHistoryN - 1; j++ )
1924         {
1925             m_fileHistory[j] = m_fileHistory[j + 1];
1926         }
1927
1928         // shuffle filenames up
1929         wxString buf;
1930         for ( j = i; j < m_fileHistoryN - 1; j++ )
1931         {
1932             buf.Printf(s_MRUEntryFormat, j + 1, m_fileHistory[j]);
1933             menu->SetLabel(wxID_FILE1 + j, buf);
1934         }
1935
1936         // to be removed as soon as wxMenu::Delete() is implemented
1937 #if 1
1938         menu->SetLabel(wxID_FILE1 + m_fileHistoryN - 1, wxT(""));
1939 #endif
1940
1941         node = node->Next();
1942     }
1943     m_fileHistoryN--;
1944 }
1945
1946 wxString wxFileHistory::GetHistoryFile(int i) const
1947 {
1948     if (i < m_fileHistoryN)
1949         return wxString(m_fileHistory[i]);
1950     else
1951         return wxString("");
1952 }
1953
1954 void wxFileHistory::UseMenu(wxMenu *menu)
1955 {
1956     if (!m_fileMenus.Member(menu))
1957         m_fileMenus.Append(menu);
1958 }
1959
1960 void wxFileHistory::RemoveMenu(wxMenu *menu)
1961 {
1962     m_fileMenus.DeleteObject(menu);
1963 }
1964
1965 #if wxUSE_CONFIG
1966 void wxFileHistory::Load(wxConfigBase& config)
1967 {
1968     m_fileHistoryN = 0;
1969     wxString buf;
1970     buf.Printf(wxT("file%d"), m_fileHistoryN+1);
1971     wxString historyFile;
1972     while ((m_fileHistoryN <= m_fileMaxFiles) && config.Read(buf, &historyFile) && (historyFile != wxT("")))
1973     {
1974         m_fileHistory[m_fileHistoryN] = copystring((const wxChar*) historyFile);
1975         m_fileHistoryN ++;
1976         buf.Printf(wxT("file%d"), m_fileHistoryN+1);
1977         historyFile = "";
1978     }
1979     AddFilesToMenu();
1980 }
1981
1982 void wxFileHistory::Save(wxConfigBase& config)
1983 {
1984     int i;
1985     for (i = 0; i < m_fileHistoryN; i++)
1986     {
1987         wxString buf;
1988         buf.Printf(wxT("file%d"), i+1);
1989         config.Write(buf, wxString(m_fileHistory[i]));
1990     }
1991 }
1992 #endif // wxUSE_CONFIG
1993
1994 void wxFileHistory::AddFilesToMenu()
1995 {
1996     if (m_fileHistoryN > 0)
1997     {
1998         wxNode* node = m_fileMenus.First();
1999         while (node)
2000         {
2001             wxMenu* menu = (wxMenu*) node->Data();
2002             menu->AppendSeparator();
2003             int i;
2004             for (i = 0; i < m_fileHistoryN; i++)
2005             {
2006                 if (m_fileHistory[i])
2007                 {
2008                     wxString buf;
2009                     buf.Printf(s_MRUEntryFormat, i+1, m_fileHistory[i]);
2010                     menu->Append(wxID_FILE1+i, buf);
2011                 }
2012             }
2013             node = node->Next();
2014         }
2015     }
2016 }
2017
2018 void wxFileHistory::AddFilesToMenu(wxMenu* menu)
2019 {
2020     if (m_fileHistoryN > 0)
2021     {
2022         menu->AppendSeparator();
2023         int i;
2024         for (i = 0; i < m_fileHistoryN; i++)
2025         {
2026             if (m_fileHistory[i])
2027             {
2028                 wxString buf;
2029                 buf.Printf(s_MRUEntryFormat, i+1, m_fileHistory[i]);
2030                 menu->Append(wxID_FILE1+i, buf);
2031             }
2032         }
2033     }
2034 }
2035
2036 // ----------------------------------------------------------------------------
2037 // Permits compatibility with existing file formats and functions that
2038 // manipulate files directly
2039 // ----------------------------------------------------------------------------
2040
2041 #if wxUSE_STD_IOSTREAM
2042 bool wxTransferFileToStream(const wxString& filename, ostream& stream)
2043 {
2044     FILE *fd1;
2045     int ch;
2046
2047     if ((fd1 = fopen (filename.fn_str(), "rb")) == NULL)
2048         return FALSE;
2049
2050     while ((ch = getc (fd1)) != EOF)
2051         stream << (unsigned char)ch;
2052
2053     fclose (fd1);
2054     return TRUE;
2055 }
2056
2057 bool wxTransferStreamToFile(istream& stream, const wxString& filename)
2058 {
2059     FILE *fd1;
2060     int ch;
2061
2062     if ((fd1 = fopen (filename.fn_str(), "wb")) == NULL)
2063     {
2064         return FALSE;
2065     }
2066
2067     while (!stream.eof())
2068     {
2069         ch = stream.get();
2070         if (!stream.eof())
2071             putc (ch, fd1);
2072     }
2073     fclose (fd1);
2074     return TRUE;
2075 }
2076 #endif
2077
2078 #endif // wxUSE_DOC_VIEW_ARCHITECTURE
2079