// mapdwvw.cpp : implementation file
//
// This is a part of the Microsoft Foundation Classes C++ library.
// Copyright (C) 1992-1995 Microsoft Corporation
// All rights reserved.
//
// This source code is only intended as a supplement to the
// Microsoft Foundation Classes Reference and related
// electronic documentation provided with the library.
// See these sources for detailed information regarding the
// Microsoft Foundation Classes product.

#include "stdafx.h"
#include "collect.h"
#include "colledoc.h"
#include "mapdwvw.h"

#ifdef _DEBUG
#undef THIS_FILE
static char BASED_CODE THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CMapDWordToMyStructView

IMPLEMENT_DYNCREATE(CMapDWordToMyStructView, CFormView)

CMapDWordToMyStructView::CMapDWordToMyStructView()
    : CFormView(CMapDWordToMyStructView::IDD)
{
    //{{AFX_DATA_INIT(CMapDWordToMyStructView)
    m_int = 0;
    m_float = 0.0f;
    m_str = "";
    m_dwKey = 0;
    //}}AFX_DATA_INIT
}

CMapDWordToMyStructView::~CMapDWordToMyStructView()
{
}

void CMapDWordToMyStructView::OnInitialUpdate()
{
    CFormView::OnInitialUpdate();

    // Copy all of the assocations from the document's CMap to the listbox.
    DWORD dwKey;
    IMyStruct* pMyStruct = NULL;
    m_ctlList.ResetContent();
    IStlMapDWordToMyStructPtr& map = GetDocument()->m_mapDWordToMyStruct;
    try {
    map->First();
    while (map->Next(&dwKey, &pMyStruct))
    {
        AddMapEntryToListBox(dwKey, (CMyStruct*) pMyStruct);
    }
    } catch(_com_error& e) {
        dump_com_error(e);
    }
}

void CMapDWordToMyStructView::DoDataExchange(CDataExchange* pDX)
{
    CFormView::DoDataExchange(pDX);
    //{{AFX_DATA_MAP(CMapDWordToMyStructView)
    DDX_Control(pDX, IDC_LIST, m_ctlList);
    DDX_Text(pDX, IDC_INT, m_int);
    DDX_Text(pDX, IDC_FLOAT, m_float);
    DDX_Text(pDX, IDC_STRING, m_str);
    DDX_Text(pDX, IDC_KEY, m_dwKey);
    //}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CMapDWordToMyStructView, CFormView)
    //{{AFX_MSG_MAP(CMapDWordToMyStructView)
    ON_BN_CLICKED(IDC_ADD_OR_UPDATE, OnAddOrUpdate)
    ON_BN_CLICKED(IDC_FIND, OnFind)
    ON_BN_CLICKED(IDC_REMOVE, OnRemove)
    ON_BN_CLICKED(IDC_REMOVE_ALL, OnRemoveAll)
    ON_LBN_SELCHANGE(IDC_LIST, OnSelChangeList)
    //}}AFX_MSG_MAP
END_MESSAGE_MAP()



/////////////////////////////////////////////////////////////////////////////
// CMapDWordToMyStructView diagnostics

#ifdef _DEBUG
void CMapDWordToMyStructView::AssertValid() const
{
    CFormView::AssertValid();
}

void CMapDWordToMyStructView::Dump(CDumpContext& dc) const
{
    CFormView::Dump(dc);
}

CCollectDoc* CMapDWordToMyStructView::GetDocument() // non-debug version is inline
{
    return STATIC_DOWNCAST(CCollectDoc, m_pDocument);
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CMapDWordToMyStructView internal implementation

CString CMapDWordToMyStructView::FormatListBoxEntry(DWORD dwKey, CMyStruct* pMyStruct)
{
    CString strListBoxEntry;
    strListBoxEntry.Format(_T("%d"),dwKey);
    strListBoxEntry += _T(" >> ");
    CString strMyStruct;
    pMyStruct->Format(strMyStruct);
    strListBoxEntry += strMyStruct;
    return strListBoxEntry;
}

int CMapDWordToMyStructView::FindKeyInListBox(DWORD dwKey)
{
    for (int nSel = 0; nSel < m_ctlList.GetCount(); nSel++)
    {
        if (m_ctlList.GetItemData(nSel) == dwKey)
            return nSel;
    }
    return LB_ERR;
}

void CMapDWordToMyStructView::AddMapEntryToListBox(DWORD dwKey, CMyStruct* pMyStruct)
{
    CString strListBoxEntry = FormatListBoxEntry(dwKey, pMyStruct);
    int nSel = m_ctlList.AddString(strListBoxEntry);
    m_ctlList.SetItemData(nSel, dwKey);
}

CMyStruct* CMapDWordToMyStructView::ConstructMyStructFromView()
{
    CMyStruct* pMyStruct = new CMyStruct;
    pMyStruct->m_int = m_int;
    pMyStruct->m_float = m_float;
    pMyStruct->m_str = m_str.AllocSysString();
    return pMyStruct;
}

void CMapDWordToMyStructView::UpdateViewFromMyStruct(CMyStruct* pMyStruct)
{
    m_int = pMyStruct->m_int;
    m_float = pMyStruct->m_float;
    m_str = pMyStruct->m_str;
    UpdateData(FALSE);  // update the value found in the map lookup
}


/////////////////////////////////////////////////////////////////////////////
// CMapDWordToMyStructView message handlers

void CMapDWordToMyStructView::OnAddOrUpdate()
{
    if (UpdateData() != TRUE)
        return;

    // Add or replace entry in the listbox
    int nSel = FindKeyInListBox(m_dwKey);
    try {
    if (nSel != LB_ERR)
        m_ctlList.DeleteString(nSel);
    CMyStruct* pMyStruct = ConstructMyStructFromView();
    AddMapEntryToListBox(m_dwKey, pMyStruct);

    // Add or update association in the CMap
    delete (CMyStruct*) GetDocument()->m_mapDWordToMyStruct->Map[m_dwKey];
    
    GetDocument()->m_mapDWordToMyStruct->Map[m_dwKey] = pMyStruct;
    } catch(_com_error& e) {
        dump_com_error(e);
    }
}

void CMapDWordToMyStructView::OnFind()
{
    if (UpdateData() != TRUE)
        return;

    try {
    IMyStruct* pMyStruct = NULL;
    if (!GetDocument()->m_mapDWordToMyStruct->Lookup(m_dwKey, &pMyStruct))
    {
        AfxMessageBox(IDS_KEY_NOT_FOUND);
        return;
    }

    UpdateViewFromMyStruct((CMyStruct*) pMyStruct);
    } catch(_com_error& e) {
        dump_com_error(e);
    }
}

void CMapDWordToMyStructView::OnRemove()
{
    if (UpdateData() != TRUE)
        return;

    try {
    IMyStruct* pMyStruct = NULL;
    IStlMapDWordToMyStructPtr& map = GetDocument()->m_mapDWordToMyStruct;
    if (!map->Lookup(m_dwKey, &pMyStruct))
    {
        AfxMessageBox(IDS_KEY_NOT_FOUND);
        return;
    }

    if (m_int != pMyStruct->m_int
        || m_float != pMyStruct->m_float
        || m_str != pMyStruct->m_str)
    {
        UpdateViewFromMyStruct((CMyStruct*) pMyStruct);
        AfxMessageBox(IDS_KEY_NOT_FOUND_CHOOSE_REMOVE_AGAIN);
        return;
    }

    // Remove assocation from the listbox
    int nSel = FindKeyInListBox(m_dwKey);
    ASSERT(nSel != LB_ERR);
    m_ctlList.DeleteString(nSel);

    // Remove the association from the CMap
    map->Remove;

    // Delete CMyStruct
    delete (CMyStruct*) pMyStruct;
    } catch(_com_error& e) {
        dump_com_error(e);
    }
}

void CMapDWordToMyStructView::OnRemoveAll()
{
    try {
    CCollectDoc* pDoc = GetDocument();
    pDoc->m_mapDWordToMyStruct->First();
    DWORD dwKey;
    IMyStruct* pMyStruct = NULL;
    while (pDoc->m_mapDWordToMyStruct->Next(&dwKey, &pMyStruct))
        delete (CMyStruct*) pMyStruct;
    pDoc->m_mapDWordToMyStruct->RemoveAll();
    m_ctlList.ResetContent();
    } catch(_com_error& e) {
        dump_com_error(e);
    }
}

void CMapDWordToMyStructView::OnSelChangeList()
{
    // Update the "key" field to reflect the new selection in the listbox.
    m_dwKey = m_ctlList.GetItemData(m_ctlList.GetCurSel());
    UpdateData(FALSE);

    // Now that the key field has been updated to reflect the listbox selection,
    // find the string in the map as though the user had hit the Find button.
    OnFind();
}
