docview.cpp

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        {
            Modify(false);
            return true;
        }
        else if (res == wxYES)
            return Save();
        else if (res == wxCANCEL)
            return false;
    }
    return true;
}

bool wxDocument::Draw(wxDC& WXUNUSED(context))
{
    return true;
}

bool wxDocument::AddView(wxView *view)
{
    if (!m_documentViews.Member(view))
    {
        m_documentViews.Append(view);
        OnChangedViewList();
    }
    return true;
}

bool wxDocument::RemoveView(wxView *view)
{
    (void)m_documentViews.DeleteObject(view);
    OnChangedViewList();
    return true;
}

bool wxDocument::OnCreate(const wxString& WXUNUSED(path), long flags)
{
    if (GetDocumentTemplate()->CreateView(this, flags))
        return true;
    else
        return false;
}

// Called after a view is added or removed.
// The default implementation deletes the document if
// there are no more views.
void wxDocument::OnChangedViewList()
{
    if (m_documentViews.GetCount() == 0)
    {
        if (OnSaveModified())
        {
            delete this;
        }
    }
}

void wxDocument::UpdateAllViews(wxView *sender, wxObject *hint)
{
    wxList::compatibility_iterator node = m_documentViews.GetFirst();
    while (node)
    {
        wxView *view = (wxView *)node->GetData();
        if (view != sender)
            view->OnUpdate(sender, hint);
        node = node->GetNext();
    }
}

void wxDocument::NotifyClosing()
{
    wxList::compatibility_iterator node = m_documentViews.GetFirst();
    while (node)
    {
        wxView *view = (wxView *)node->GetData();
        view->OnClosingDocument();
        node = node->GetNext();
    }
}

void wxDocument::SetFilename(const wxString& filename, bool notifyViews)
{
    m_documentFile = filename;
    if ( notifyViews )
    {
        // Notify the views that the filename has changed
        wxList::compatibility_iterator node = m_documentViews.GetFirst();
        while (node)
        {
            wxView *view = (wxView *)node->GetData();
            view->OnChangeFilename();
            node = node->GetNext();
        }
    }
}

bool wxDocument::DoSaveDocument(const wxString& file)
{
    wxString msgTitle;
    if (!wxTheApp->GetAppName().empty())
        msgTitle = wxTheApp->GetAppName();
    else
        msgTitle = wxString(_("File error"));

#if wxUSE_STD_IOSTREAM
    wxSTD ofstream store(file.mb_str(), wxSTD ios::binary);
    if (store.fail() || store.bad())
#else
    wxFileOutputStream store(file);
    if (store.GetLastError() != wxSTREAM_NO_ERROR)
#endif
    {
        (void)wxMessageBox(_("Sorry, could not open this file for saving."), msgTitle, wxOK | wxICON_EXCLAMATION,
                           GetDocumentWindow());
        // Saving error
        return false;
    }
    if (!SaveObject(store))
    {
        (void)wxMessageBox(_("Sorry, could not save this file."), msgTitle, wxOK | wxICON_EXCLAMATION,
                           GetDocumentWindow());
        // Saving error
        return false;
    }

    return true;
}

bool wxDocument::DoOpenDocument(const wxString& file)
{
#if wxUSE_STD_IOSTREAM
    wxSTD ifstream store(file.mb_str(), wxSTD ios::binary);
    if (!store.fail() && !store.bad())
#else
    wxFileInputStream store(file);
    if (store.GetLastError() == wxSTREAM_NO_ERROR)
#endif
    {
#if wxUSE_STD_IOSTREAM
        LoadObject(store);
        if ( !!store || store.eof() )
#else
        int res = LoadObject(store).GetLastError();
        if ( res == wxSTREAM_NO_ERROR || res == wxSTREAM_EOF )
#endif
            return true;
    }

    wxLogError(_("Sorry, could not open this file."));
    return false;
}


// ----------------------------------------------------------------------------
// Document view
// ----------------------------------------------------------------------------

wxView::wxView()
{
    m_viewDocument = (wxDocument*) NULL;

    m_viewFrame = (wxFrame *) NULL;
}

wxView::~wxView()
{
    GetDocumentManager()->ActivateView(this, false);
    m_viewDocument->RemoveView(this);
}

// Extend event processing to search the document's event table
bool wxView::ProcessEvent(wxEvent& event)
{
    if ( !GetDocument() || !GetDocument()->ProcessEvent(event) )
        return wxEvtHandler::ProcessEvent(event);

    return true;
}

void wxView::OnActivateView(bool WXUNUSED(activate), wxView *WXUNUSED(activeView), wxView *WXUNUSED(deactiveView))
{
}

void wxView::OnPrint(wxDC *dc, wxObject *WXUNUSED(info))
{
    OnDraw(dc);
}

void wxView::OnUpdate(wxView *WXUNUSED(sender), wxObject *WXUNUSED(hint))
{
}

void wxView::OnChangeFilename()
{
    if (GetFrame() && GetDocument())
    {
        wxString title;

        GetDocument()->GetPrintableName(title);

        GetFrame()->SetTitle(title);
    }
}

void wxView::SetDocument(wxDocument *doc)
{
    m_viewDocument = doc;
    if (doc)
        doc->AddView(this);
}

bool wxView::Close(bool deleteWindow)
{
    if (OnClose(deleteWindow))
        return true;
    else
        return false;
}

void wxView::Activate(bool activate)
{
    if (GetDocument() && GetDocumentManager())
    {
        OnActivateView(activate, this, GetDocumentManager()->GetCurrentView());
        GetDocumentManager()->ActivateView(this, activate);
    }
}

bool wxView::OnClose(bool WXUNUSED(deleteWindow))
{
    return GetDocument() ? GetDocument()->Close() : true;
}

#if wxUSE_PRINTING_ARCHITECTURE
wxPrintout *wxView::OnCreatePrintout()
{
    return new wxDocPrintout(this);
}
#endif // wxUSE_PRINTING_ARCHITECTURE

// ----------------------------------------------------------------------------
// wxDocTemplate
// ----------------------------------------------------------------------------

wxDocTemplate::wxDocTemplate(wxDocManager *manager,
                             const wxString& descr,
                             const wxString& filter,
                             const wxString& dir,
                             const wxString& ext,
                             const wxString& docTypeName,
                             const wxString& viewTypeName,
                             wxClassInfo *docClassInfo,
                             wxClassInfo *viewClassInfo,
                             long flags)
{
    m_documentManager = manager;
    m_description = descr;
    m_directory = dir;
    m_defaultExt = ext;
    m_fileFilter = filter;
    m_flags = flags;
    m_docTypeName = docTypeName;
    m_viewTypeName = viewTypeName;
    m_documentManager->AssociateTemplate(this);

    m_docClassInfo = docClassInfo;
    m_viewClassInfo = viewClassInfo;
}

wxDocTemplate::~wxDocTemplate()
{
    m_documentManager->DisassociateTemplate(this);
}

// Tries to dynamically construct an object of the right class.
wxDocument *wxDocTemplate::CreateDocument(const wxString& path, long flags)
{
    wxDocument *doc = DoCreateDocument();
    if ( doc == NULL )
        return (wxDocument *) NULL;

    if (InitDocument(doc, path, flags))
    {
        return doc;
    }
    else
    {
        return (wxDocument *) NULL;
    }
}

bool wxDocTemplate::InitDocument(wxDocument* doc, const wxString& path, long flags)
{
    doc->SetFilename(path);
    doc->SetDocumentTemplate(this);
    GetDocumentManager()->AddDocument(doc);
    doc->SetCommandProcessor(doc->OnCreateCommandProcessor());

    if (doc->OnCreate(path, flags))
        return true;
    else
    {
        if (GetDocumentManager()->GetDocuments().Member(doc))
            doc->DeleteAllViews();
        return false;
    }
}

wxView *wxDocTemplate::CreateView(wxDocument *doc, long flags)
{
    wxView *view = DoCreateView();
    if ( view == NULL )
        return (wxView *) NULL;

    view->SetDocument(doc);
    if (view->OnCreate(doc, flags))
    {
        return view;
    }
    else
    {
        delete view;
        return (wxView *) NULL;
    }
}

// The default (very primitive) format detection: check is the extension is
// that of the template
bool wxDocTemplate::FileMatchesTemplate(const wxString& path)
{
    wxStringTokenizer parser (GetFileFilter(), wxT(";"));
    wxString anything = wxT ("*");
    while (parser.HasMoreTokens())
    {
        wxString filter = parser.GetNextToken();
        wxString filterExt = FindExtension (filter);
        if ( filter.IsSameAs (anything)    ||
             filterExt.IsSameAs (anything) ||
             filterExt.IsSameAs (FindExtension (path)) )
            return true;
    }
    return GetDefaultExtension().IsSameAs(FindExtension(path));
}

wxDocument *wxDocTemplate::DoCreateDocument()
{
    if (!m_docClassInfo)
        return (wxDocument *) NULL;

    return (wxDocument *)m_docClassInfo->CreateObject();
}

wxView *wxDocTemplate::DoCreateView()
{
    if (!m_viewClassInfo)
        return (wxView *) NULL;

    return (wxView *)m_viewClassInfo->CreateObject();
}

// ----------------------------------------------------------------------------
// wxDocManager
// ----------------------------------------------------------------------------

BEGIN_EVENT_TABLE(wxDocManager, wxEvtHandler)
    EVT_MENU(wxID_OPEN, wxDocManager::OnFileOpen)
    EVT_MENU(wxID_CLOSE, wxDocManager::OnFileClose)
    EVT_MENU(wxID_CLOSE_ALL, wxDocManager::OnFileCloseAll)
    EVT_MENU(wxID_REVERT, wxDocManager::OnFileRevert)
    EVT_MENU(wxID_NEW, wxDocManager::OnFileNew)
    EVT_MENU(wxID_SAVE, wxDocManager::OnFileSave)
    EVT_MENU(wxID_SAVEAS, wxDocManager::OnFileSaveAs)
    EVT_MENU(wxID_UNDO, wxDocManager::OnUndo)
    EVT_MENU(wxID_REDO, wxDocManager::OnRedo)

    EVT_UPDATE_UI(wxID_OPEN, wxDocManager::OnUpdateFileOpen)
    EVT_UPDATE_UI(wxID_CLOSE, wxDocManager::OnUpdateFileClose)
    EVT_UPDATE_UI(wxID_CLOSE_ALL, wxDocManager::OnUpdateFileClose)
    EVT_UPDATE_UI(wxID_REVERT, wxDocManager::OnUpdateFileRevert)
    EVT_UPDATE_UI(wxID_NEW, wxDocManager::OnUpdateFileNew)
    EVT_UPDATE_UI(wxID_SAVE, wxDocManager::OnUpdateFileSave)
    EVT_UPDATE_UI(wxID_SAVEAS, wxDocManager::OnUpdateFileSaveAs)
    EVT_UPDATE_UI(wxID_UNDO, wxDocManager::OnUpdateUndo)
    EVT_UPDATE_UI(wxID_REDO, wxDocManager::OnUpdateRedo)

#if wxUSE_PRINTING_ARCHITECTURE
    EVT_MENU(wxID_PRINT, wxDocManager::OnPrint)
    EVT_MENU(wxID_PREVIEW, wxDocManager::OnPreview)

    EVT_UPDATE_UI(wxID_PRINT, wxDocManager::OnUpdatePrint)
    EVT_UPDATE_UI(wxID_PREVIEW, wxDocManager::OnUpdatePreview)
#endif
END_EVENT_TABLE()

wxDocManager* wxDocManager::sm_docManager = (wxDocManager*) NULL;

wxDocManager::wxDocManager(long flags, bool initialize)
{
    m_defaultDocumentNameCounter = 1;
    m_flags = flags;
    m_currentView = (wxView *) NULL;
    m_maxDocsOpen = 10000;
    m_fileHistory = (wxFileHistory *) NULL;
    if (initialize)
        Initialize();
    sm_docManager = this;
}

wxDocManager::~wxDocManager()
{
    Clear();
    if (m_fileHistory)
        delete m_fileHistory;
    sm_docManager = (wxDocManager*) NULL;
}

// closes the specified document
bool wxDocManager::CloseDocument(wxDocument* doc, bool force)
{
    if (doc->Close() || force)
    {
        // Implicitly deletes the document when
        // the last view is deleted
        doc->DeleteAllViews();

        // Check we're really deleted
        if (m_docs.Member(doc))
            delete doc;

        return true;
    }
    return false;
}

bool wxDocManager::CloseDocuments(bool force)
{
    wxList::compatibility_iterator node = m_docs.GetFirst();
    while (node)
    {
        wxDocument *doc = (wxDocument *)node->GetData();
        wxList::compatibility_iterator next = node->GetNext();

        if (!CloseDocument(doc, force))
            return false;

        // This assumes that documents are not connected in
        // any way, i.e. deleting one document does NOT
        // delete another.
        node = next;
    }
    return true;
}

bool wxDocManager::Clear(bool force)
{
    if (!CloseDocuments(force))
        return false;

    m_currentView = NULL;

    wxList::compatibility_iterator node = m_templates.GetFirst();
    while (node)
    {
        wxDocTemplate *templ = (wxDocTemplate*) node->GetData();
        wxList::compatibility_iterator next = node->GetNext();
        delete templ;
        node = next;
    }
    return true;
}