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