///////////////////////////////////////////////////////////
// Softwarebauelemente II, C2.1
//
// author:			Stephan Brumme
// last changes:	August 2, 2001


#include "stdafx.h"
#include "C2_1.h"
#include "C2_1Dlg.h"
#include "PolymorphicSet.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CC2_1Dlg Dialogfeld

CC2_1Dlg::CC2_1Dlg(CWnd* pParent /*=NULL*/)
	: CDialog(CC2_1Dlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CC2_1Dlg)
	m_Date = 0;
	m_Time = 0;
	//}}AFX_DATA_INIT
	// Beachten Sie, dass LoadIcon unter Win32 keinen nachfolgenden DestroyIcon-Aufruf benötigt
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CC2_1Dlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CC2_1Dlg)
	DDX_Control(pDX, IDC_LIST, m_List);
	DDX_DateTimeCtrl(pDX, IDC_DATEPICKER, m_Date);
	DDX_DateTimeCtrl(pDX, IDC_TIMEPICKER, m_Time);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CC2_1Dlg, CDialog)
	//{{AFX_MSG_MAP(CC2_1Dlg)
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON_DELETE, OnDelete)
	ON_BN_CLICKED(IDC_BUTTON_LOAD, OnLoad)
	ON_BN_CLICKED(IDC_BUTTON_SAVE, OnSave)
	ON_LBN_DBLCLK(IDC_LIST, OnDblclkList)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CC2_1Dlg Nachrichten-Handler

BOOL CC2_1Dlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Symbol für dieses Dialogfeld festlegen. Wird automatisch erledigt
	//  wenn das Hauptfenster der Anwendung kein Dialogfeld ist
	SetIcon(m_hIcon, TRUE);			// Großes Symbol verwenden
	SetIcon(m_hIcon, FALSE);		// Kleines Symbol verwenden
	
	// ZU ERLEDIGEN: Hier zusätzliche Initialisierung einfügen

    // initialize random generator
    srand((unsigned)time(NULL));

    // set timer to refresh m_Time
    SetTimer(1, 1000, NULL);

    m_Date = m_Time = m_Moment;
    UpdateData(FALSE);

	return TRUE;  // Geben Sie TRUE zurück, außer ein Steuerelement soll den Fokus erhalten
}

// Wollen Sie Ihrem Dialogfeld eine Schaltfläche "Minimieren" hinzufügen, benötigen Sie 
//  den nachstehenden Code, um das Symbol zu zeichnen. Für MFC-Anwendungen, die das 
//  Dokument/Ansicht-Modell verwenden, wird dies automatisch für Sie erledigt.

void CC2_1Dlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // Gerätekontext für Zeichnen

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Symbol in Client-Rechteck zentrieren
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Symbol zeichnen
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

// Die Systemaufrufe fragen den Cursorform ab, die angezeigt werden soll, während der Benutzer
//  das zum Symbol verkleinerte Fenster mit der Maus zieht.
HCURSOR CC2_1Dlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}


// a derived class, just used to show polymorphism
// no new attributes and/or operations are introduced
class CMomentDerived : public CMoment
{
    DECLARE_SERIAL(CMomentDerived)

public:
    CMomentDerived() {};
    ~CMomentDerived() {};
};
IMPLEMENT_SERIAL(CMomentDerived, CMoment, 1)



// insert element
void CC2_1Dlg::OnOK() 
{
    CMomentDerived derived;
    CMoment* moment;

    // use derived class at random
    if (rand()<RAND_MAX/3)
        moment = &derived;
    else
        moment = &m_Moment;

    // actually set time/date
    UpdateData(TRUE);
    moment->SetYear  (m_Date.GetYear());
    moment->SetMonth (m_Date.GetMonth());
    moment->SetDay   (m_Date.GetDay());
    moment->SetHour  (m_Time.GetHour());
    moment->SetMinute(m_Time.GetMinute());
    moment->SetSecond(m_Time.GetSecond());

    // add to the set
    if (m_Set.Insert(moment) != -1)
        UpdateListBox();
    else
        AfxMessageBox("Zeitpunkt schon in der Menge enthalten !", MB_ICONSTOP);
}


// delete a entry from the listbox
void CC2_1Dlg::OnDelete() 
{
    // save current selection
    int nSelected = m_List.GetCurSel();
    if (nSelected < 0)
        return;

    // move cursor to the selection
    delete m_Set.GetFirst();
    while (nSelected-- > 0)
        delete m_Set.GetNext();
       
    // and delete
    m_Set.Scratch();

    // redraw the listbox
    UpdateListBox();
}


// deserialize
void CC2_1Dlg::OnLoad() 
{
    CFileDialog dlg(TRUE);
    dlg.DoModal();

    CFile    file(dlg.GetPathName(), CFile::modeRead);
    CArchive ar  (&file, CArchive::load);

    m_Set.Serialize(ar);

    // redraw the listbox
    UpdateListBox();
}


// serialize
void CC2_1Dlg::OnSave() 
{
    CFileDialog dlg(FALSE);
    dlg.DoModal();

    CFile    file(dlg.GetPathName(), CFile::modeCreate|CFile::modeWrite);
    CArchive ar  (&file, CArchive::store);

    m_Set.Serialize(ar);
}


// redraw listbox
void CC2_1Dlg::UpdateListBox()
{
    // save index of selected item
    int nSelected = m_List.GetCurSel();

    // delete all elements
    m_List.ResetContent();

    int nElements = m_Set.Card();

    // empty list ?
    if (nElements == 0)
        return;

    CMoment* obj = m_Set.GetFirst();
    while (nElements > 0)
    {
        // display some info
        CString info;
        info.Format("%02d.%02d.%04d - %02d:%02d:%02d", 
                    obj->GetDay(),  obj->GetMonth(),  obj->GetYear(),
                    obj->GetHour(), obj->GetMinute(), obj->GetSecond());

        // look for derived classes (they prove polymorphism !)
        if (obj->IsKindOf(RUNTIME_CLASS(CMomentDerived)))
            info += " (abgeleitet)";

        delete obj;
        m_List.AddString(info);

        nElements--;
        // if the end is not reached then get next element
        if (nElements > 0)
            obj = m_Set.GetNext();
    }

    // set selection
    if (nSelected == -1 || nSelected > m_List.GetCount())
        nSelected = m_List.GetCount()-1;
    m_List.SetCurSel(nSelected);
}


// change both pickers
void CC2_1Dlg::OnDblclkList() 
{
    // save current selection
    int nSelected = m_List.GetCurSel();
    if (nSelected < 0)
        return;

    // move cursor to the selection, delete all generated elements
    delete m_Set.GetFirst();
    while (nSelected-- > 0)
        delete m_Set.GetNext();
       
    // even CMomentDerived can be handled this way
    CMoment* moment = m_Set.GetCurrent();
    m_Date = *moment;
    m_Time = *moment;
    delete moment;

    // update both pickers
    UpdateData(FALSE);

#ifdef _DEBUG
    afxDump << m_Set;
#endif
}