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 = T("&%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 == T("") || !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 == T(""))
 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() != T(""))
 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() != T(""))
 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 != T(""))
 382     {
 383         buf = m_documentTitle;
 384         return TRUE;
 385     }
 386     else if (m_documentFile != T(""))
 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() != T(""))
 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     if (initialize)
 710         Initialize();
 711 }
 712
 713 wxDocManager::~wxDocManager()
 714 {
 715     Clear();
 716     if (m_fileHistory)
 717         delete m_fileHistory;
 718 }
 719
 720 bool wxDocManager::Clear(bool force)
 721 {
 722     wxNode *node = m_docs.First();
 723     while (node)
 724     {
 725         wxDocument *doc = (wxDocument *)node->Data();
 726         wxNode *next = node->Next();
 727
 728         if (!doc->Close() && !force)
 729             return FALSE;
 730
 731         // Implicitly deletes the document when the last
 732         // view is removed (deleted)
 733         doc->DeleteAllViews();
 734
 735         // Check document is deleted
 736         if (m_docs.Member(doc))
 737             delete doc;
 738
 739         // This assumes that documents are not connected in
 740         // any way, i.e. deleting one document does NOT
 741         // delete another.
 742         node = next;
 743     }
 744     node = m_templates.First();
 745     while (node)
 746     {
 747         wxDocTemplate *templ = (wxDocTemplate*) node->Data();
 748         wxNode* next = node->Next();
 749         delete templ;
 750         node = next;
 751     }
 752     return TRUE;
 753 }
 754
 755 bool wxDocManager::Initialize()
 756 {
 757     m_fileHistory = OnCreateFileHistory();
 758     return TRUE;
 759 }
 760
 761 wxFileHistory *wxDocManager::OnCreateFileHistory()
 762 {
 763     return new wxFileHistory;
 764 }
 765
 766 void wxDocManager::OnFileClose(wxCommandEvent& WXUNUSED(event))
 767 {
 768     wxDocument *doc = GetCurrentDocument();
 769     if (!doc)
 770         return;
 771     if (doc->Close())
 772     {
 773         doc->DeleteAllViews();
 774         if (m_docs.Member(doc))
 775             delete doc;
 776     }
 777 }
 778
 779 void wxDocManager::OnFileNew(wxCommandEvent& WXUNUSED(event))
 780 {
 781     CreateDocument(wxString(""), wxDOC_NEW);
 782 }
 783
 784 void wxDocManager::OnFileOpen(wxCommandEvent& WXUNUSED(event))
 785 {
 786     CreateDocument(wxString(""), 0);
 787 }
 788
 789 void wxDocManager::OnFileRevert(wxCommandEvent& WXUNUSED(event))
 790 {
 791     wxDocument *doc = GetCurrentDocument();
 792     if (!doc)
 793         return;
 794     doc->Revert();
 795 }
 796
 797 void wxDocManager::OnFileSave(wxCommandEvent& WXUNUSED(event))
 798 {
 799     wxDocument *doc = GetCurrentDocument();
 800     if (!doc)
 801         return;
 802     doc->Save();
 803 }
 804
 805 void wxDocManager::OnFileSaveAs(wxCommandEvent& WXUNUSED(event))
 806 {
 807     wxDocument *doc = GetCurrentDocument();
 808     if (!doc)
 809         return;
 810     doc->SaveAs();
 811 }
 812
 813 void wxDocManager::OnPrint(wxCommandEvent& WXUNUSED(event))
 814 {
 815 #if wxUSE_PRINTING_ARCHITECTURE
 816     wxView *view = GetCurrentView();
 817     if (!view)
 818         return;
 819
 820     wxPrintout *printout = view->OnCreatePrintout();
 821     if (printout)
 822     {
 823         wxPrinter printer;
 824         printer.Print(view->GetFrame(), printout, TRUE);
 825
 826         delete printout;
 827     }
 828 #endif // wxUSE_PRINTING_ARCHITECTURE
 829 }
 830
 831 void wxDocManager::OnPrintSetup(wxCommandEvent& WXUNUSED(event))
 832 {
 833 #if wxUSE_PRINTING_ARCHITECTURE
 834     wxWindow *parentWin = wxTheApp->GetTopWindow();
 835     wxView *view = GetCurrentView();
 836     if (view)
 837         parentWin = view->GetFrame();
 838
 839     wxPrintDialogData data;
 840
 841     wxPrintDialog printerDialog(parentWin, &data);
 842     printerDialog.GetPrintDialogData().SetSetupDialog(TRUE);
 843     printerDialog.ShowModal();
 844 #endif // wxUSE_PRINTING_ARCHITECTURE
 845 }
 846
 847 void wxDocManager::OnPreview(wxCommandEvent& WXUNUSED(event))
 848 {
 849 #if wxUSE_PRINTING_ARCHITECTURE
 850     wxView *view = GetCurrentView();
 851     if (!view)
 852         return;
 853
 854     wxPrintout *printout = view->OnCreatePrintout();
 855     if (printout)
 856     {
 857         // Pass two printout objects: for preview, and possible printing.
 858         wxPrintPreviewBase *preview = (wxPrintPreviewBase *) NULL;
 859         preview = new wxPrintPreview(printout, view->OnCreatePrintout());
 860
 861         wxPreviewFrame *frame = new wxPreviewFrame(preview, (wxFrame *)wxTheApp->GetTopWindow(), _("Print Preview"),
 862                 wxPoint(100, 100), wxSize(600, 650));
 863         frame->Centre(wxBOTH);
 864         frame->Initialize();
 865         frame->Show(TRUE);
 866     }
 867 #endif // wxUSE_PRINTING_ARCHITECTURE
 868 }
 869
 870 void wxDocManager::OnUndo(wxCommandEvent& WXUNUSED(event))
 871 {
 872     wxDocument *doc = GetCurrentDocument();
 873     if (!doc)
 874         return;
 875     if (doc->GetCommandProcessor())
 876         doc->GetCommandProcessor()->Undo();
 877 }
 878
 879 void wxDocManager::OnRedo(wxCommandEvent& WXUNUSED(event))
 880 {
 881     wxDocument *doc = GetCurrentDocument();
 882     if (!doc)
 883         return;
 884     if (doc->GetCommandProcessor())
 885         doc->GetCommandProcessor()->Redo();
 886 }
 887
 888 wxView *wxDocManager::GetCurrentView() const
 889 {
 890     if (m_currentView)
 891         return m_currentView;
 892     if (m_docs.Number() == 1)
 893     {
 894         wxDocument* doc = (wxDocument*) m_docs.First()->Data();
 895         return doc->GetFirstView();
 896     }
 897     return (wxView *) NULL;
 898 }
 899
 900 // Extend event processing to search the view's event table
 901 bool wxDocManager::ProcessEvent(wxEvent& event)
 902 {
 903     wxView* view = GetCurrentView();
 904     if (view)
 905     {
 906         if (view->ProcessEvent(event))
 907             return TRUE;
 908     }
 909     return wxEvtHandler::ProcessEvent(event);
 910 }
 911
 912 wxDocument *wxDocManager::CreateDocument(const wxString& path, long flags)
 913 {
 914     wxDocTemplate **templates = new wxDocTemplate *[m_templates.Number()];
 915     int i;
 916     int n = 0;
 917     for (i = 0; i < m_templates.Number(); i++)
 918     {
 919         wxDocTemplate *temp = (wxDocTemplate *)(m_templates.Nth(i)->Data());
 920         if (temp->IsVisible())
 921         {
 922             templates[n] = temp;
 923             n ++;
 924         }
 925     }
 926     if (n == 0)
 927     {
 928         delete[] templates;
 929         return (wxDocument *) NULL;
 930     }
 931
 932     // If we've reached the max number of docs, close the
 933     // first one.
 934     if (GetDocuments().Number() >= m_maxDocsOpen)
 935     {
 936         wxDocument *doc = (wxDocument *)GetDocuments().First()->Data();
 937         if (doc->Close())
 938         {
 939             // Implicitly deletes the document when
 940             // the last view is deleted
 941             doc->DeleteAllViews();
 942
 943             // Check we're really deleted
 944             if (m_docs.Member(doc))
 945                 delete doc;
 946         }
 947         else
 948             return (wxDocument *) NULL;
 949     }
 950
 951     // New document: user chooses a template, unless there's only one.
 952     if (flags & wxDOC_NEW)
 953     {
 954         if (n == 1)
 955         {
 956             wxDocTemplate *temp = templates[0];
 957             delete[] templates;
 958             wxDocument *newDoc = temp->CreateDocument(path, flags);
 959             if (newDoc)
 960             {
 961                 newDoc->SetDocumentName(temp->GetDocumentName());
 962                 newDoc->SetDocumentTemplate(temp);
 963                 newDoc->OnNewDocument();
 964             }
 965             return newDoc;
 966         }
 967
 968         wxDocTemplate *temp = SelectDocumentType(templates, n);
 969         delete[] templates;
 970         if (temp)
 971         {
 972             wxDocument *newDoc = temp->CreateDocument(path, flags);
 973             if (newDoc)
 974             {
 975                 newDoc->SetDocumentName(temp->GetDocumentName());
 976                 newDoc->SetDocumentTemplate(temp);
 977                 newDoc->OnNewDocument();
 978             }
 979             return newDoc;
 980         }
 981         else
 982             return (wxDocument *) NULL;
 983     }
 984
 985     // Existing document
 986     wxDocTemplate *temp = (wxDocTemplate *) NULL;
 987
 988     wxString path2(T(""));
 989     if (path != T(""))
 990         path2 = path;
 991
 992     if (flags & wxDOC_SILENT)
 993         temp = FindTemplateForPath(path2);
 994     else
 995         temp = SelectDocumentPath(templates, n, path2, flags);
 996
 997     delete[] templates;
 998
 999     if (temp)
1000     {
1001         wxDocument *newDoc = temp->CreateDocument(path2, flags);
1002         if (newDoc)
1003         {
1004             newDoc->SetDocumentName(temp->GetDocumentName());
1005             newDoc->SetDocumentTemplate(temp);
1006             if (!newDoc->OnOpenDocument(path2))
1007             {
1008                 delete newDoc;
1009                 return (wxDocument *) NULL;
1010             }
1011             AddFileToHistory(path2);
1012         }
1013         return newDoc;
1014     }
1015     else
1016         return (wxDocument *) NULL;
1017 }
1018
1019 wxView *wxDocManager::CreateView(wxDocument *doc, long flags)
1020 {
1021     wxDocTemplate **templates = new wxDocTemplate *[m_templates.Number()];
1022     int n =0;
1023     int i;
1024     for (i = 0; i < m_templates.Number(); i++)
1025     {
1026         wxDocTemplate *temp = (wxDocTemplate *)(m_templates.Nth(i)->Data());
1027         if (temp->IsVisible())
1028         {
1029             if (temp->GetDocumentName() == doc->GetDocumentName())
1030             {
1031                 templates[n] = temp;
1032                 n ++;
1033             }
1034         }
1035     }
1036     if (n == 0)
1037     {
1038         delete[] templates;
1039         return (wxView *) NULL;
1040     }
1041     if (n == 1)
1042     {
1043         wxDocTemplate *temp = templates[0];
1044         delete[] templates;
1045         wxView *view = temp->CreateView(doc, flags);
1046         if (view)
1047             view->SetViewName(temp->GetViewName());
1048         return view;
1049     }
1050
1051     wxDocTemplate *temp = SelectViewType(templates, n);
1052     delete[] templates;
1053     if (temp)
1054     {
1055         wxView *view = temp->CreateView(doc, flags);
1056         if (view)
1057             view->SetViewName(temp->GetViewName());
1058         return view;
1059     }
1060     else
1061         return (wxView *) NULL;
1062 }
1063
1064 // Not yet implemented
1065 void wxDocManager::DeleteTemplate(wxDocTemplate *WXUNUSED(temp), long WXUNUSED(flags))
1066 {
1067 }
1068
1069 // Not yet implemented
1070 bool wxDocManager::FlushDoc(wxDocument *WXUNUSED(doc))
1071 {
1072     return FALSE;
1073 }
1074
1075 wxDocument *wxDocManager::GetCurrentDocument() const
1076 {
1077     if (m_currentView)
1078         return m_currentView->GetDocument();
1079     else
1080         return (wxDocument *) NULL;
1081 }
1082
1083 // Make a default document name
1084 bool wxDocManager::MakeDefaultName(wxString& name)
1085 {
1086     name.Printf(_("unnamed%d"), m_defaultDocumentNameCounter);
1087     m_defaultDocumentNameCounter++;
1088
1089     return TRUE;
1090 }
1091
1092 // Not yet implemented
1093 wxDocTemplate *wxDocManager::MatchTemplate(const wxString& WXUNUSED(path))
1094 {
1095     return (wxDocTemplate *) NULL;
1096 }
1097
1098 // File history management
1099 void wxDocManager::AddFileToHistory(const wxString& file)
1100 {
1101     if (m_fileHistory)
1102         m_fileHistory->AddFileToHistory(file);
1103 }
1104
1105 void wxDocManager::RemoveFileFromHistory(int i)
1106 {
1107     if (m_fileHistory)
1108         m_fileHistory->RemoveFileFromHistory(i);
1109 }
1110
1111 wxString wxDocManager::GetHistoryFile(int i) const
1112 {
1113     wxString histFile;
1114
1115     if (m_fileHistory)
1116         histFile = m_fileHistory->GetHistoryFile(i);
1117
1118     return histFile;
1119 }
1120
1121 void wxDocManager::FileHistoryUseMenu(wxMenu *menu)
1122 {
1123     if (m_fileHistory)
1124         m_fileHistory->UseMenu(menu);
1125 }
1126
1127 void wxDocManager::FileHistoryRemoveMenu(wxMenu *menu)
1128 {
1129     if (m_fileHistory)
1130         m_fileHistory->RemoveMenu(menu);
1131 }
1132
1133 #if wxUSE_CONFIG
1134 void wxDocManager::FileHistoryLoad(wxConfigBase& config)
1135 {
1136     if (m_fileHistory)
1137         m_fileHistory->Load(config);
1138 }
1139
1140 void wxDocManager::FileHistorySave(wxConfigBase& config)
1141 {
1142     if (m_fileHistory)
1143         m_fileHistory->Save(config);
1144 }
1145 #endif
1146
1147 void wxDocManager::FileHistoryAddFilesToMenu(wxMenu* menu)
1148 {
1149     if (m_fileHistory)
1150         m_fileHistory->AddFilesToMenu(menu);
1151 }
1152
1153 void wxDocManager::FileHistoryAddFilesToMenu()
1154 {
1155     if (m_fileHistory)
1156         m_fileHistory->AddFilesToMenu();
1157 }
1158
1159 int wxDocManager::GetNoHistoryFiles() const
1160 {
1161     if (m_fileHistory)
1162         return m_fileHistory->GetNoHistoryFiles();
1163     else
1164         return 0;
1165 }
1166
1167
1168 // Find out the document template via matching in the document file format
1169 // against that of the template
1170 wxDocTemplate *wxDocManager::FindTemplateForPath(const wxString& path)
1171 {
1172     wxDocTemplate *theTemplate = (wxDocTemplate *) NULL;
1173
1174     // Find the template which this extension corresponds to
1175     int i;
1176     for (i = 0; i < m_templates.Number(); i++)
1177     {
1178         wxDocTemplate *temp = (wxDocTemplate *)m_templates.Nth(i)->Data();
1179         if ( temp->FileMatchesTemplate(path) )
1180         {
1181             theTemplate = temp;
1182             break;
1183         }
1184     }
1185     return theTemplate;
1186 }
1187
1188 // Prompts user to open a file, using file specs in templates.
1189 // How to implement in wxWindows? Must extend the file selector
1190 // dialog or implement own; OR match the extension to the
1191 // template extension.
1192
1193 wxDocTemplate *wxDocManager::SelectDocumentPath(wxDocTemplate **templates,
1194 #ifdef __WXMSW__
1195                                                 int noTemplates,
1196 #else
1197                                                 int WXUNUSED(noTemplates),
1198 #endif
1199                                                 wxString& path,
1200                                                 long WXUNUSED(flags),
1201                                                 bool WXUNUSED(save))
1202 {
1203     // We can only have multiple filters in Windows
1204 #ifdef __WXMSW__
1205     wxString descrBuf;
1206
1207     int i;
1208     for (i = 0; i < noTemplates; i++)
1209     {
1210         if (templates[i]->IsVisible())
1211         {
1212             // add a '|' to separate this filter from the previous one
1213             if ( !descrBuf.IsEmpty() )
1214                 descrBuf << T('|');
1215
1216             descrBuf << templates[i]->GetDescription()
1217                 << T(" (") << templates[i]->GetFileFilter() << T(") |")
1218                 << templates[i]->GetFileFilter();
1219         }
1220     }
1221 #else
1222     wxString descrBuf = T("*.*");
1223 #endif
1224
1225     int FilterIndex = 0;
1226     wxString pathTmp = wxFileSelectorEx(_("Select a file"),
1227                                         T(""),
1228                                         T(""),
1229                                         &FilterIndex,
1230                                         descrBuf,
1231                                         0,
1232                                         wxTheApp->GetTopWindow());
1233
1234     if (!pathTmp.IsEmpty())
1235     {
1236         path = pathTmp;
1237         wxString theExt = FindExtension(path);
1238         if (!theExt)
1239             return (wxDocTemplate *) NULL;
1240
1241         // This is dodgy in that we're selecting the template on the
1242         // basis of the file extension, which may not be a standard
1243         // one. We really want to know exactly which template was
1244         // chosen by using a more advanced file selector.
1245         wxDocTemplate *theTemplate = FindTemplateForPath(path);
1246         if ( !theTemplate )
1247             theTemplate = templates[FilterIndex];
1248
1249         return theTemplate;
1250     }
1251     else
1252     {
1253         path = T("");
1254         return (wxDocTemplate *) NULL;
1255     }
1256 #if 0
1257     // In all other windowing systems, until we have more advanced
1258     // file selectors, we must select the document type (template) first, and
1259     // _then_ pop up the file selector.
1260     wxDocTemplate *temp = SelectDocumentType(templates, noTemplates);
1261     if (!temp)
1262         return (wxDocTemplate *) NULL;
1263
1264     wxChar *pathTmp = wxFileSelector(_("Select a file"), T(""), T(""),
1265             temp->GetDefaultExtension(),
1266             temp->GetFileFilter(),
1267             0, wxTheApp->GetTopWindow());
1268
1269     if (pathTmp)
1270     {
1271         path = pathTmp;
1272         return temp;
1273     }
1274     else
1275         return (wxDocTemplate *) NULL;
1276 #endif // 0
1277 }
1278
1279 wxDocTemplate *wxDocManager::SelectDocumentType(wxDocTemplate **templates,
1280                                                 int noTemplates)
1281 {
1282     wxChar **strings = new wxChar *[noTemplates];
1283     wxChar **data = new wxChar *[noTemplates];
1284     int i;
1285     int n = 0;
1286     for (i = 0; i < noTemplates; i++)
1287     {
1288         if (templates[i]->IsVisible())
1289         {
1290             strings[n] = (wxChar *)templates[i]->m_description.c_str();
1291             data[n] = (wxChar *)templates[i];
1292             n ++;
1293         }
1294     }
1295     if (n == 0)
1296     {
1297         delete[] strings;
1298         delete[] data;
1299         return (wxDocTemplate *) NULL;
1300     }
1301     else if (n == 1)
1302     {
1303         wxDocTemplate *temp = (wxDocTemplate *)data[0];
1304         delete[] strings;
1305         delete[] data;
1306         return temp;
1307     }
1308
1309     wxDocTemplate *theTemplate = (wxDocTemplate *)wxGetSingleChoiceData(_("Select a document template"), _("Templates"), n,
1310             strings, (char **)data);
1311     delete[] strings;
1312     delete[] data;
1313     return theTemplate;
1314 }
1315
1316 wxDocTemplate *wxDocManager::SelectViewType(wxDocTemplate **templates,
1317         int noTemplates)
1318 {
1319     wxChar **strings = new wxChar *[noTemplates];
1320     wxChar **data = new wxChar *[noTemplates];
1321     int i;
1322     int n = 0;
1323     for (i = 0; i < noTemplates; i++)
1324     {
1325         if (templates[i]->IsVisible() && (templates[i]->GetViewName() != T("")))
1326         {
1327             strings[n] = (wxChar *)templates[i]->m_viewTypeName.c_str();
1328             data[n] = (wxChar *)templates[i];
1329             n ++;
1330         }
1331     }
1332     wxDocTemplate *theTemplate = (wxDocTemplate *)wxGetSingleChoiceData(_("Select a document view"), _("Views"), n,
1333             strings, (char **)data);
1334     delete[] strings;
1335     delete[] data;
1336     return theTemplate;
1337 }
1338
1339 void wxDocManager::AssociateTemplate(wxDocTemplate *temp)
1340 {
1341     if (!m_templates.Member(temp))
1342         m_templates.Append(temp);
1343 }
1344
1345 void wxDocManager::DisassociateTemplate(wxDocTemplate *temp)
1346 {
1347     m_templates.DeleteObject(temp);
1348 }
1349
1350 // Add and remove a document from the manager's list
1351 void wxDocManager::AddDocument(wxDocument *doc)
1352 {
1353     if (!m_docs.Member(doc))
1354         m_docs.Append(doc);
1355 }
1356
1357 void wxDocManager::RemoveDocument(wxDocument *doc)
1358 {
1359     m_docs.DeleteObject(doc);
1360 }
1361
1362 // Views or windows should inform the document manager
1363 // when a view is going in or out of focus
1364 void wxDocManager::ActivateView(wxView *view, bool activate, bool WXUNUSED(deleting))
1365 {
1366     // If we're deactiving, and if we're not actually deleting the view, then
1367     // don't reset the current view because we may be going to
1368     // a window without a view.
1369     // WHAT DID I MEAN BY THAT EXACTLY?
1370     /*
1371        if (deleting)
1372        {
1373        if (m_currentView == view)
1374        m_currentView = NULL;
1375        }
1376        else
1377      */
1378     {
1379         if (activate)
1380             m_currentView = view;
1381         else
1382             m_currentView = (wxView *) NULL;
1383     }
1384 }
1385
1386 // ----------------------------------------------------------------------------
1387 // Default document child frame
1388 // ----------------------------------------------------------------------------
1389
1390 BEGIN_EVENT_TABLE(wxDocChildFrame, wxFrame)
1391     EVT_ACTIVATE(wxDocChildFrame::OnActivate)
1392     EVT_CLOSE(wxDocChildFrame::OnCloseWindow)
1393 END_EVENT_TABLE()
1394
1395 wxDocChildFrame::wxDocChildFrame(wxDocument *doc,
1396                                  wxView *view,
1397                                  wxFrame *frame,
1398                                  wxWindowID id,
1399                                  const wxString& title,
1400                                  const wxPoint& pos,
1401                                  const wxSize& size,
1402                                  long style,
1403                                  const wxString& name)
1404                : wxFrame(frame, id, title, pos, size, style, name)
1405 {
1406     m_childDocument = doc;
1407     m_childView = view;
1408     if (view)
1409         view->SetFrame(this);
1410 }
1411
1412 wxDocChildFrame::~wxDocChildFrame()
1413 {
1414 }
1415
1416 // Extend event processing to search the view's event table
1417 bool wxDocChildFrame::ProcessEvent(wxEvent& event)
1418 {
1419     if (m_childView)
1420         m_childView->Activate(TRUE);
1421
1422     if ( !m_childView || ! m_childView->ProcessEvent(event) )
1423     {
1424         // Only hand up to the parent if it's a menu command
1425         if (!event.IsKindOf(CLASSINFO(wxCommandEvent)) || !GetParent() || !GetParent()->ProcessEvent(event))
1426             return wxEvtHandler::ProcessEvent(event);
1427         else
1428             return TRUE;
1429     }
1430     else
1431         return TRUE;
1432 }
1433
1434 void wxDocChildFrame::OnActivate(wxActivateEvent& event)
1435 {
1436     wxFrame::OnActivate(event);
1437
1438     if (m_childView)
1439         m_childView->Activate(event.GetActive());
1440 }
1441
1442 void wxDocChildFrame::OnCloseWindow(wxCloseEvent& event)
1443 {
1444     if (m_childView)
1445     {
1446         bool ans = FALSE;
1447         if (!event.CanVeto())
1448             ans = TRUE; // Must delete.
1449         else
1450             ans = m_childView->Close(FALSE); // FALSE means don't delete associated window
1451
1452         if (ans)
1453         {
1454             m_childView->Activate(FALSE);
1455             delete m_childView;
1456             m_childView = (wxView *) NULL;
1457             m_childDocument = (wxDocument *) NULL;
1458
1459             this->Destroy();
1460         }
1461         else
1462             event.Veto();
1463     }
1464     else
1465         event.Veto();
1466 }
1467
1468 // ----------------------------------------------------------------------------
1469 // Default parent frame
1470 // ----------------------------------------------------------------------------
1471
1472 BEGIN_EVENT_TABLE(wxDocParentFrame, wxFrame)
1473     EVT_MENU(wxID_EXIT, wxDocParentFrame::OnExit)
1474     EVT_MENU_RANGE(wxID_FILE1, wxID_FILE9, wxDocParentFrame::OnMRUFile)
1475     EVT_CLOSE(wxDocParentFrame::OnCloseWindow)
1476 END_EVENT_TABLE()
1477
1478 wxDocParentFrame::wxDocParentFrame(wxDocManager *manager,
1479                                    wxFrame *frame,
1480                                    wxWindowID id,
1481                                    const wxString& title,
1482                                    const wxPoint& pos,
1483                                    const wxSize& size,
1484                                    long style,
1485                                    const wxString& name)
1486                 : wxFrame(frame, id, title, pos, size, style, name)
1487 {
1488     m_docManager = manager;
1489 }
1490
1491 void wxDocParentFrame::OnExit(wxCommandEvent& WXUNUSED(event))
1492 {
1493     Close();
1494 }
1495
1496 void wxDocParentFrame::OnMRUFile(wxCommandEvent& event)
1497 {
1498     int n = event.GetSelection() - wxID_FILE1;  // the index in MRU list
1499     wxString filename(m_docManager->GetHistoryFile(n));
1500     if ( !filename.IsEmpty() )
1501     {
1502         // verify that the file exists before doing anything else
1503         if ( wxFile::Exists(filename) )
1504         {
1505             // try to open it
1506             (void)m_docManager->CreateDocument(filename, wxDOC_SILENT);
1507         }
1508         else
1509         {
1510             // remove the bogus filename from the MRU list and notify the user
1511             // about it
1512             m_docManager->RemoveFileFromHistory(n);
1513
1514             wxLogError(_("The file '%s' doesn't exist and couldn't be opened.\n"
1515                          "It has been also removed from the MRU files list."),
1516                        filename.c_str());
1517         }
1518     }
1519 }
1520
1521 // Extend event processing to search the view's event table
1522 bool wxDocParentFrame::ProcessEvent(wxEvent& event)
1523 {
1524     // Try the document manager, then do default processing
1525     if (!m_docManager || !m_docManager->ProcessEvent(event))
1526         return wxEvtHandler::ProcessEvent(event);
1527     else
1528         return TRUE;
1529 }
1530
1531 // Define the behaviour for the frame closing
1532 // - must delete all frames except for the main one.
1533 void wxDocParentFrame::OnCloseWindow(wxCloseEvent& event)
1534 {
1535     if (m_docManager->Clear(!event.CanVeto()))
1536     {
1537         this->Destroy();
1538     }
1539     else
1540         event.Veto();
1541 }
1542
1543 #if wxUSE_PRINTING_ARCHITECTURE
1544
1545 wxDocPrintout::wxDocPrintout(wxView *view, const wxString& title)
1546              : wxPrintout(title)
1547 {
1548     m_printoutView = view;
1549 }
1550
1551 bool wxDocPrintout::OnPrintPage(int WXUNUSED(page))
1552 {
1553     wxDC *dc = GetDC();
1554
1555     // Get the logical pixels per inch of screen and printer
1556     int ppiScreenX, ppiScreenY;
1557     GetPPIScreen(&ppiScreenX, &ppiScreenY);
1558     int ppiPrinterX, ppiPrinterY;
1559     GetPPIPrinter(&ppiPrinterX, &ppiPrinterY);
1560
1561     // This scales the DC so that the printout roughly represents the
1562     // the screen scaling. The text point size _should_ be the right size
1563     // but in fact is too small for some reason. This is a detail that will
1564     // need to be addressed at some point but can be fudged for the
1565     // moment.
1566     float scale = (float)((float)ppiPrinterX/(float)ppiScreenX);
1567
1568     // Now we have to check in case our real page size is reduced
1569     // (e.g. because we're drawing to a print preview memory DC)
1570     int pageWidth, pageHeight;
1571     int w, h;
1572     dc->GetSize(&w, &h);
1573     GetPageSizePixels(&pageWidth, &pageHeight);
1574
1575     // If printer pageWidth == current DC width, then this doesn't
1576     // change. But w might be the preview bitmap width, so scale down.
1577     float overallScale = scale * (float)(w/(float)pageWidth);
1578     dc->SetUserScale(overallScale, overallScale);
1579
1580     if (m_printoutView)
1581     {
1582         m_printoutView->OnDraw(dc);
1583     }
1584     return TRUE;
1585 }
1586
1587 bool wxDocPrintout::HasPage(int pageNum)
1588 {
1589     return (pageNum == 1);
1590 }
1591
1592 bool wxDocPrintout::OnBeginDocument(int startPage, int endPage)
1593 {
1594     if (!wxPrintout::OnBeginDocument(startPage, endPage))
1595         return FALSE;
1596
1597     return TRUE;
1598 }
1599
1600 void wxDocPrintout::GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, int *selPageTo)
1601 {
1602     *minPage = 1;
1603     *maxPage = 1;
1604     *selPageFrom = 1;
1605     *selPageTo = 1;
1606 }
1607
1608 #endif // wxUSE_PRINTING_ARCHITECTURE
1609
1610 // ----------------------------------------------------------------------------
1611 // Command processing framework
1612 // ----------------------------------------------------------------------------
1613
1614 wxCommand::wxCommand(bool canUndoIt, const wxString& name)
1615 {
1616     m_canUndo = canUndoIt;
1617     m_commandName = name;
1618 }
1619
1620 wxCommand::~wxCommand()
1621 {
1622 }
1623
1624 // Command processor
1625 wxCommandProcessor::wxCommandProcessor(int maxCommands)
1626 {
1627     m_maxNoCommands = maxCommands;
1628     m_currentCommand = (wxNode *) NULL;
1629     m_commandEditMenu = (wxMenu *) NULL;
1630 }
1631
1632 wxCommandProcessor::~wxCommandProcessor()
1633 {
1634     ClearCommands();
1635 }
1636
1637 // Pass a command to the processor. The processor calls Do();
1638 // if successful, is appended to the command history unless
1639 // storeIt is FALSE.
1640 bool wxCommandProcessor::Submit(wxCommand *command, bool storeIt)
1641 {
1642     bool success = command->Do();
1643     if (success && storeIt)
1644     {
1645         if (m_commands.Number() == m_maxNoCommands)
1646         {
1647             wxNode *firstNode = m_commands.First();
1648             wxCommand *firstCommand = (wxCommand *)firstNode->Data();
1649             delete firstCommand;
1650             delete firstNode;
1651         }
1652
1653         // Correct a bug: we must chop off the current 'branch'
1654         // so that we're at the end of the command list.
1655         if (!m_currentCommand)
1656             ClearCommands();
1657         else
1658         {
1659             wxNode *node = m_currentCommand->Next();
1660             while (node)
1661             {
1662                 wxNode *next = node->Next();
1663                 delete (wxCommand *)node->Data();
1664                 delete node;
1665                 node = next;
1666             }
1667         }
1668
1669         m_commands.Append(command);
1670         m_currentCommand = m_commands.Last();
1671         SetMenuStrings();
1672     }
1673     return success;
1674 }
1675
1676 bool wxCommandProcessor::Undo()
1677 {
1678     if (m_currentCommand)
1679     {
1680         wxCommand *command = (wxCommand *)m_currentCommand->Data();
1681         if (command->CanUndo())
1682         {
1683             bool success = command->Undo();
1684             if (success)
1685             {
1686                 m_currentCommand = m_currentCommand->Previous();
1687                 SetMenuStrings();
1688                 return TRUE;
1689             }
1690         }
1691     }
1692     return FALSE;
1693 }
1694
1695 bool wxCommandProcessor::Redo()
1696 {
1697     wxCommand *redoCommand = (wxCommand *) NULL;
1698     wxNode *redoNode = (wxNode *) NULL;
1699     if (m_currentCommand && m_currentCommand->Next())
1700     {
1701         redoCommand = (wxCommand *)m_currentCommand->Next()->Data();
1702         redoNode = m_currentCommand->Next();
1703     }
1704     else
1705     {
1706         if (m_commands.Number() > 0)
1707         {
1708             redoCommand = (wxCommand *)m_commands.First()->Data();
1709             redoNode = m_commands.First();
1710         }
1711     }
1712
1713     if (redoCommand)
1714     {
1715         bool success = redoCommand->Do();
1716         if (success)
1717         {
1718             m_currentCommand = redoNode;
1719             SetMenuStrings();
1720             return TRUE;
1721         }
1722     }
1723     return FALSE;
1724 }
1725
1726 bool wxCommandProcessor::CanUndo() const
1727 {
1728     if (m_currentCommand)
1729         return ((wxCommand *)m_currentCommand->Data())->CanUndo();
1730     return FALSE;
1731 }
1732
1733 bool wxCommandProcessor::CanRedo() const
1734 {
1735     if ((m_currentCommand != (wxNode*) NULL) && (m_currentCommand->Next() == (wxNode*) NULL))
1736         return FALSE;
1737
1738     if ((m_currentCommand != (wxNode*) NULL) && (m_currentCommand->Next() != (wxNode*) NULL))
1739         return TRUE;
1740
1741     if ((m_currentCommand == (wxNode*) NULL) && (m_commands.Number() > 0))
1742         return TRUE;
1743
1744     return FALSE;
1745 }
1746
1747 void wxCommandProcessor::Initialize()
1748 {
1749     m_currentCommand = m_commands.Last();
1750     SetMenuStrings();
1751 }
1752
1753 void wxCommandProcessor::SetMenuStrings()
1754 {
1755     if (m_commandEditMenu)
1756     {
1757         wxString buf;
1758         if (m_currentCommand)
1759         {
1760             wxCommand *command = (wxCommand *)m_currentCommand->Data();
1761             wxString commandName(command->GetName());
1762             if (commandName == T("")) commandName = _("Unnamed command");
1763             bool canUndo = command->CanUndo();
1764             if (canUndo)
1765                 buf = wxString(_("&Undo ")) + commandName;
1766             else
1767                 buf = wxString(_("Can't &Undo ")) + commandName;
1768
1769             m_commandEditMenu->SetLabel(wxID_UNDO, buf);
1770             m_commandEditMenu->Enable(wxID_UNDO, canUndo);
1771
1772             // We can redo, if we're not at the end of the history.
1773             if (m_currentCommand->Next())
1774             {
1775                 wxCommand *redoCommand = (wxCommand *)m_currentCommand->Next()->Data();
1776                 wxString redoCommandName(redoCommand->GetName());
1777                 if (redoCommandName == T("")) redoCommandName = _("Unnamed command");
1778                 buf = wxString(_("&Redo ")) + redoCommandName;
1779                 m_commandEditMenu->SetLabel(wxID_REDO, buf);
1780                 m_commandEditMenu->Enable(wxID_REDO, TRUE);
1781             }
1782             else
1783             {
1784                 m_commandEditMenu->SetLabel(wxID_REDO, _("&Redo"));
1785                 m_commandEditMenu->Enable(wxID_REDO, FALSE);
1786             }
1787         }
1788         else
1789         {
1790             m_commandEditMenu->SetLabel(wxID_UNDO, _("&Undo"));
1791             m_commandEditMenu->Enable(wxID_UNDO, FALSE);
1792
1793             if (m_commands.Number() == 0)
1794             {
1795                 m_commandEditMenu->SetLabel(wxID_REDO, _("&Redo"));
1796                 m_commandEditMenu->Enable(wxID_REDO, FALSE);
1797             }
1798             else
1799             {
1800                 // currentCommand is NULL but there are commands: this means that
1801                 // we've undone to the start of the list, but can redo the first.
1802                 wxCommand *redoCommand = (wxCommand *)m_commands.First()->Data();
1803                 wxString redoCommandName(redoCommand->GetName());
1804                 if (redoCommandName == T("")) redoCommandName = _("Unnamed command");
1805                 buf = wxString(_("&Redo ")) + redoCommandName;
1806                 m_commandEditMenu->SetLabel(wxID_REDO, buf);
1807                 m_commandEditMenu->Enable(wxID_REDO, TRUE);
1808             }
1809         }
1810     }
1811 }
1812
1813 void wxCommandProcessor::ClearCommands()
1814 {
1815     wxNode *node = m_commands.First();
1816     while (node)
1817     {
1818         wxCommand *command = (wxCommand *)node->Data();
1819         delete command;
1820         delete node;
1821         node = m_commands.First();
1822     }
1823     m_currentCommand = (wxNode *) NULL;
1824 }
1825
1826 // ----------------------------------------------------------------------------
1827 // File history processor
1828 // ----------------------------------------------------------------------------
1829
1830 wxFileHistory::wxFileHistory(int maxFiles)
1831 {
1832     m_fileMaxFiles = maxFiles;
1833     m_fileHistoryN = 0;
1834     m_fileHistory = new wxChar *[m_fileMaxFiles];
1835 }
1836
1837 wxFileHistory::~wxFileHistory()
1838 {
1839     int i;
1840     for (i = 0; i < m_fileHistoryN; i++)
1841         delete[] m_fileHistory[i];
1842     delete[] m_fileHistory;
1843 }
1844
1845 // File history management
1846 void wxFileHistory::AddFileToHistory(const wxString& file)
1847 {
1848     int i;
1849     // Check we don't already have this file
1850     for (i = 0; i < m_fileHistoryN; i++)
1851     {
1852         if (m_fileHistory[i] && wxString(m_fileHistory[i]) == file)
1853             return;
1854     }
1855
1856     // Add to the project file history:
1857     // Move existing files (if any) down so we can insert file at beginning.
1858
1859     // First delete filename that has popped off the end of the array (if any)
1860     if (m_fileHistoryN == m_fileMaxFiles)
1861     {
1862         delete[] m_fileHistory[m_fileMaxFiles-1];
1863         m_fileHistory[m_fileMaxFiles-1] = (wxChar *) NULL;
1864     }
1865     if (m_fileHistoryN < m_fileMaxFiles)
1866     {
1867         wxNode* node = m_fileMenus.First();
1868         while (node)
1869         {
1870             wxMenu* menu = (wxMenu*) node->Data();
1871             if (m_fileHistoryN == 0)
1872                 menu->AppendSeparator();
1873             menu->Append(wxID_FILE1+m_fileHistoryN, _("[EMPTY]"));
1874             node = node->Next();
1875         }
1876         m_fileHistoryN ++;
1877     }
1878     // Shuffle filenames down
1879     for (i = (m_fileHistoryN-1); i > 0; i--)
1880     {
1881         m_fileHistory[i] = m_fileHistory[i-1];
1882     }
1883     m_fileHistory[0] = copystring(file);
1884
1885     for (i = 0; i < m_fileHistoryN; i++)
1886         if (m_fileHistory[i])
1887         {
1888             wxString buf;
1889             buf.Printf(s_MRUEntryFormat, i+1, m_fileHistory[i]);
1890             wxNode* node = m_fileMenus.First();
1891             while (node)
1892             {
1893                 wxMenu* menu = (wxMenu*) node->Data();
1894                 menu->SetLabel(wxID_FILE1+i, buf);
1895                 node = node->Next();
1896             }
1897         }
1898 }
1899
1900 void wxFileHistory::RemoveFileFromHistory(int i)
1901 {
1902     wxCHECK_RET( i < m_fileHistoryN,
1903                  T("invalid index in wxFileHistory::RemoveFileFromHistory") );
1904
1905     wxNode* node = m_fileMenus.First();
1906     while ( node )
1907     {
1908         wxMenu* menu = (wxMenu*) node->Data();
1909
1910         // wxMenu::Delete() is missing from wxGTK, so this can't be done :-(
1911 #if 0
1912         // delete the menu items
1913         menu->Delete(wxID_FILE1 + i);
1914 #endif
1915
1916         // delete the element from the array (could use memmove() too...)
1917         delete [] m_fileHistory[i];
1918
1919         int j;
1920         for ( j = i; j < m_fileHistoryN - 1; j++ )
1921         {
1922             m_fileHistory[j] = m_fileHistory[j + 1];
1923         }
1924
1925         // shuffle filenames up
1926         wxString buf;
1927         for ( j = i; j < m_fileHistoryN - 1; j++ )
1928         {
1929             buf.Printf(s_MRUEntryFormat, j + 1, m_fileHistory[j]);
1930             menu->SetLabel(wxID_FILE1 + j, buf);
1931         }
1932
1933         // to be removed as soon as wxMenu::Delete() is implemented
1934 #if 1
1935         menu->SetLabel(wxID_FILE1 + m_fileHistoryN - 1, T(""));
1936 #endif
1937
1938         node = node->Next();
1939     }
1940     m_fileHistoryN--;
1941 }
1942
1943 wxString wxFileHistory::GetHistoryFile(int i) const
1944 {
1945     if (i < m_fileHistoryN)
1946         return wxString(m_fileHistory[i]);
1947     else
1948         return wxString("");
1949 }
1950
1951 void wxFileHistory::UseMenu(wxMenu *menu)
1952 {
1953     if (!m_fileMenus.Member(menu))
1954         m_fileMenus.Append(menu);
1955 }
1956
1957 void wxFileHistory::RemoveMenu(wxMenu *menu)
1958 {
1959     m_fileMenus.DeleteObject(menu);
1960 }
1961
1962 #if wxUSE_CONFIG
1963 void wxFileHistory::Load(wxConfigBase& config)
1964 {
1965     m_fileHistoryN = 0;
1966     wxString buf;
1967     buf.Printf(T("file%d"), m_fileHistoryN+1);
1968     wxString historyFile;
1969     while ((m_fileHistoryN <= m_fileMaxFiles) && config.Read(buf, &historyFile) && (historyFile != T("")))
1970     {
1971         m_fileHistory[m_fileHistoryN] = copystring((const wxChar*) historyFile);
1972         m_fileHistoryN ++;
1973         buf.Printf(T("file%d"), m_fileHistoryN+1);
1974         historyFile = "";
1975     }
1976     AddFilesToMenu();
1977 }
1978
1979 void wxFileHistory::Save(wxConfigBase& config)
1980 {
1981     int i;
1982     for (i = 0; i < m_fileHistoryN; i++)
1983     {
1984         wxString buf;
1985         buf.Printf(T("file%d"), i+1);
1986         config.Write(buf, wxString(m_fileHistory[i]));
1987     }
1988 }
1989 #endif // wxUSE_CONFIG
1990
1991 void wxFileHistory::AddFilesToMenu()
1992 {
1993     if (m_fileHistoryN > 0)
1994     {
1995         wxNode* node = m_fileMenus.First();
1996         while (node)
1997         {
1998             wxMenu* menu = (wxMenu*) node->Data();
1999             menu->AppendSeparator();
2000             int i;
2001             for (i = 0; i < m_fileHistoryN; i++)
2002             {
2003                 if (m_fileHistory[i])
2004                 {
2005                     wxString buf;
2006                     buf.Printf(s_MRUEntryFormat, i+1, m_fileHistory[i]);
2007                     menu->Append(wxID_FILE1+i, buf);
2008                 }
2009             }
2010             node = node->Next();
2011         }
2012     }
2013 }
2014
2015 void wxFileHistory::AddFilesToMenu(wxMenu* menu)
2016 {
2017     if (m_fileHistoryN > 0)
2018     {
2019         menu->AppendSeparator();
2020         int i;
2021         for (i = 0; i < m_fileHistoryN; i++)
2022         {
2023             if (m_fileHistory[i])
2024             {
2025                 wxString buf;
2026                 buf.Printf(s_MRUEntryFormat, i+1, m_fileHistory[i]);
2027                 menu->Append(wxID_FILE1+i, buf);
2028             }
2029         }
2030     }
2031 }
2032
2033 // ----------------------------------------------------------------------------
2034 // Permits compatibility with existing file formats and functions that
2035 // manipulate files directly
2036 // ----------------------------------------------------------------------------
2037
2038 #if wxUSE_STD_IOSTREAM
2039 bool wxTransferFileToStream(const wxString& filename, ostream& stream)
2040 {
2041     FILE *fd1;
2042     int ch;
2043
2044     if ((fd1 = fopen (filename.fn_str(), "rb")) == NULL)
2045         return FALSE;
2046
2047     while ((ch = getc (fd1)) != EOF)
2048         stream << (unsigned char)ch;
2049
2050     fclose (fd1);
2051     return TRUE;
2052 }
2053
2054 bool wxTransferStreamToFile(istream& stream, const wxString& filename)
2055 {
2056     FILE *fd1;
2057     int ch;
2058
2059     if ((fd1 = fopen (filename.fn_str(), "wb")) == NULL)
2060     {
2061         return FALSE;
2062     }
2063
2064     while (!stream.eof())
2065     {
2066         ch = stream.get();
2067         if (!stream.eof())
2068             putc (ch, fd1);
2069     }
2070     fclose (fd1);
2071     return TRUE;
2072 }
2073 #endif
2074
2075 #endif // wxUSE_DOC_VIEW_ARCHITECTURE
2076