// ChatServerDlg.cpp : implementation file
//
#include "stdafx.h"
#include "ChatServer.h"
#include "ChatServerDlg.h"
#include "ChatMessage.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About
class CAboutDlg : public CDialog
{
public:
CAboutDlg();
// Dialog Data
//{{AFX_DATA(CAboutDlg)
enum { IDD = IDD_ABOUTBOX };
//}}AFX_DATA
// ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(CAboutDlg)
protected:
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support
//}}AFX_VIRTUAL
// Implementation
protected:
//{{AFX_MSG(CAboutDlg)
//}}AFX_MSG
DECLARE_MESSAGE_MAP()
};
CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
//{{AFX_DATA_INIT(CAboutDlg)
//}}AFX_DATA_INIT
}
void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CAboutDlg)
//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
//{{AFX_MSG_MAP(CAboutDlg)
// No message handlers
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CChatServerDlg dialog
CChatServerDlg::CChatServerDlg(CWnd* pParent /*=NULL*/)
: CDialog(CChatServerDlg::IDD, pParent)
{
//{{AFX_DATA_INIT(CChatServerDlg)
m_lPort = 6000;
//}}AFX_DATA_INIT
// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}
void CChatServerDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CChatServerDlg)
DDX_Control(pDX, IDC_EDIT_MESSAGES, m_editMessages);
DDX_Control(pDX, IDC_LIST_USERS, m_listBoxUsers);
DDX_Control(pDX, IDC_BUTTON_START, m_buttonStart);
DDX_Control(pDX, IDC_BUTTON_PING_USER, m_buttonPingUser);
DDX_Control(pDX, IDC_BUTTON_PING_ALL_USERS, m_buttonPingAllUsers);
DDX_Control(pDX, IDC_BUTTON_DISCONNECT_USER, m_buttonDisconnectUser);
DDX_Control(pDX, IDC_BUTTON_DISCONNECT_ALL_USERS, m_buttonDisconnectAllUsers);
DDX_Text(pDX, IDC_EDIT_PORT, m_lPort);
//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CChatServerDlg, CDialog)
//{{AFX_MSG_MAP(CChatServerDlg)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_BN_CLICKED(IDC_BUTTON_DISCONNECT_USER, OnButtonDisconnectUser)
ON_BN_CLICKED(IDC_BUTTON_PING_USER, OnButtonPingUser)
ON_BN_CLICKED(IDC_BUTTON_START, OnButtonStart)
ON_BN_CLICKED(IDC_BUTTON_PING_ALL_USERS, OnButtonPingAllUsers)
ON_BN_CLICKED(IDC_BUTTON_DISCONNECT_ALL_USERS, OnButtonDisconnectAllUsers)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CChatServerDlg message handlers
BOOL CChatServerDlg::OnInitDialog()
{
CDialog::OnInitDialog();
// Add "About..." menu item to system menu.
// IDM_ABOUTBOX must be in the system command range.
ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
ASSERT(IDM_ABOUTBOX < 0xF000);
CMenu* pSysMenu = GetSystemMenu(FALSE);
if (pSysMenu != NULL)
{
CString strAboutMenu;
strAboutMenu.LoadString(IDS_ABOUTBOX);
if (!strAboutMenu.IsEmpty())
{
pSysMenu->AppendMenu(MF_SEPARATOR);
pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
}
}
// Set the icon for this dialog. The framework does this automatically
// when the application's main window is not a dialog
SetIcon(m_hIcon, TRUE); // Set big icon
SetIcon(m_hIcon, FALSE); // Set small icon
// TODO: Add extra initialization here
UpdateUI();
return TRUE; // return TRUE unless you set the focus to a control
}
void CChatServerDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
if ((nID & 0xFFF0) == IDM_ABOUTBOX)
{
CAboutDlg dlgAbout;
dlgAbout.DoModal();
}
else
{
CDialog::OnSysCommand(nID, lParam);
}
}
// If you add a minimize button to your dialog, you will need the code below
// to draw the icon. For MFC applications using the document/view model,
// this is automatically done for you by the framework.
void CChatServerDlg::OnPaint()
{
if (IsIconic())
{
CPaintDC dc(this); // device context for painting
SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);
// Center icon in client rectangle
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;
// Draw the icon
dc.DrawIcon(x, y, m_hIcon);
}
else
{
CDialog::OnPaint();
}
}
// The system calls this to obtain the cursor to display while the user drags
// the minimized window.
HCURSOR CChatServerDlg::OnQueryDragIcon()
{
return (HCURSOR) m_hIcon;
}
////////////////////////////////////////////////////////////////////////////////
// NDK: overrides OnIsConnectionAccepted, OnConnect, OnMessage, OnDisconnect
// and OnPing
// Called when a user tries to connect to the server. Return TRUE to accept
// the connection or FALSE otherwise. The derived class must override this
// method.
BOOL CChatServerDlg::OnIsConnectionAccepted()
{
// Accept only 20 users as an example, you can change this number or always
// return TRUE;
ASSERT(GetNbUsers() < 20);
return (GetNbUsers() < 20);
}
// Called when a user is connected to the server. The derived class must
// override this method.
void CChatServerDlg::OnConnect(long /*lUserId*/)
{
// OnMessage: ChatUserJoin adds the user in the map, so nothing to do here
}
// Called whenever a message is received from a user. The derived class must
// override this method.
void CChatServerDlg::OnMessage(long lUserId, CNDKMessage& message)
{
switch (message.GetId())
{
case ChatUserJoin:
{
CString strNickname;
message.GetAt(0, strNickname);
AddUser(lUserId, strNickname);
CString strUserJoin;
strUserJoin.Format(IDS_USER_JOIN, strNickname);
AddSystemText(strUserJoin);
SendMessageToAllUsersExceptFor(lUserId, message);
}
break;
case ChatText:
{
CString strNickname;
m_mapIdsNicknames.Lookup(lUserId, strNickname);
CString strText;
message.GetAt(0, strText);
AddText(strNickname + _T(": ") + strText);
message.SetAt(0, strNickname);
message.SetAt(1, strText);
// Send the text to all other users
SendMessageToAllUsersExceptFor(lUserId, message);
}
break;
case ChatBigMessage:
{
char szBigMessage[300];
UINT unLength = 0;
message.GetAt(0, szBigMessage, unLength);
UCHAR uc;
message.GetAt(1, uc);
char c;
message.GetAt(2, c);
USHORT us;
message.GetAt(3, us);
short s;
message.GetAt(4, s);
UINT un;
message.GetAt(5, un);
int n;
message.GetAt(6, n);
ULONG ul;
message.GetAt(7, ul);
long l;
message.GetAt(8, l);
float f;
message.GetAt(9, f);
double d;
message.GetAt(10, d);
double dValues[10000];
message.GetAt(11, dValues, unLength);
ASSERT(dValues[5555] == 1234.56789f);
CString strEndMessage;
message.GetAt(12, strEndMessage);
CString strNickname;
m_mapIdsNicknames.Lookup(lUserId, strNickname);
CString strBigMessage;
strBigMessage.Format(IDS_BIG_MESSAGE, strNickname);
AddSystemText(strBigMessage);
}
break;
}
}
// Called whenever a user is disconnected (the the user might have closed
// the connection or an error occurs when sending a message, for example).
// OnDisconnect callback isn't called when DisconnectUser or
// DisconnectAllUsers is used. DisconnectUser don't
// need to be called when OnDisconnect callback is called. The derived class
// must override this method.
void CChatServerDlg::OnDisconnect(long lUserId, NDKServerDisconnection disconnectionType)
{
CString strNickname;
m_mapIdsNicknames.Lookup(lUserId, strNickname);
CNDKMessage message(ChatUserQuit);
message.Add(strNickname);
// Inform all users that a user is disconnected
SendMessageToAllUsers(message);
UINT unResId = 0;
switch (disconnectionType)
{
case NDKServer_NormalDisconnection:
unResId = IDS_SERVER_CLOSE_USER;
break;
case NDKServer_ClientCloseConnection:
unResId = IDS_USER_QUIT;
break;
case NDKServer_ErrorSendingMessage:
unResId = IDS_ERROR_SENDING_MESSAGE;
break;
case NDKServer_ErrorReceivingMessage:
unResId = IDS_ERROR_SENDING_MESSAGE;
break;
default:
break;
}
CString strUserQuit;
strUserQuit.Format(unResId, strNickname);
AddSystemText(strUserQuit);
DeleteUser(lUserId);
}
// Called when the ping from the user is received. The number of
// milliseconds is returned since PingUser was called.
void CChatServerDlg::OnPing(long lUserId, long lNbMilliseconds)
{
CString strNickname;
m_mapIdsNicknames.Lookup(lUserId, strNickname);
CString strPingReceived;
strPingReceived.Format(IDS_PING_RECEIVED, strNickname, lNbMilliseconds);
AddSystemText(strPingReceived);
}
void CChatServerDlg::OnButtonStart()
{
if (UpdateData(TRUE))
{
if (IsStarted())
{
Stop();
UpdateUI();
AddSystemText((LPCSTR)IDS_STOPPED);
}
else
{
if (StartListening(m_lPort))
{
UpdateUI();
AddSystemText((LPCSTR)IDS_STARTED);
}
else
{
AfxMessageBox(IDS_CANNOT_START, MB_ICONSTOP);
}
}
}
}
void CChatServerDlg::OnButtonPingUser()
{
long lUserId = GetUserFromCurrentSelection();
if (lUserId != -1)
PingUser(lUserId);
}
void CChatServerDlg::OnButtonPingAllUsers()
{
PingAllUsers();
AddSystemText((LPCSTR)IDS_PING_ALL_USERS);
}
void CChatServerDlg::OnButtonDisconnectUser()
{
long lUserId = GetUserFromCurrentSelection();
if (lUserId != -1)
DisconnectUser(lUserId);
}
void CChatServerDlg::OnButtonDisconnectAllUsers()
{
DisconnectAllUsers();
m_mapIdsNicknames.RemoveAll();
m_listBoxUsers.ResetContent();
}
void CChatServerDlg::UpdateUI()
{
BOOL bEnable = IsStarted();
if (bEnable)
m_buttonStart.SetWindowText(_T("&Stop"));
else
m_buttonStart.SetWindowText(_T("&Start"));
m_buttonPingUser.EnableWindow(bEnable);
m_buttonPingAllUsers.EnableWindow(bEnable);
m_buttonDisconnectUser.EnableWindow(bEnable);
m_buttonDisconnectAllUsers.EnableWindow(bEnable);
}
void CChatServerDlg::AddText(const CString& strText)
{
m_editMessages.SetSel(m_editMessages.GetWindowTextLength(), m_editMessages.GetWindowTextLength());
m_editMessages.ReplaceSel(strText + "\r\n");
}
void CChatServerDlg::AddSystemText(const CString& strText)
{
AddText(_T("* ") + strText + _T(" *"));
}
void CChatServerDlg::AddUser(long lUserId, const CString& strNickname)
{
m_mapIdsNicknames.SetAt(lUserId, strNickname);
int nPos = m_listBoxUsers.AddString(strNickname);
m_listBoxUsers.SetCurSel(nPos);
}
void CChatServerDlg::DeleteUser(long lUserId)
{
CString strNickname;
m_mapIdsNicknames.Lookup(lUserId, strNickname);
m_listBoxUsers.DeleteString(m_listBoxUsers.FindStringExact(0, strNickname));
m_mapIdsNicknames.RemoveKey(lUserId);
if (m_listBoxUsers.GetCount() > 0)
m_listBoxUsers.SetCurSel(0);
}
long CChatServerDlg::GetUserFromCurrentSelection() const
{
long lResultUserId = -1;
int nCurSel = m_listBoxUsers.GetCurSel();
if (nCurSel != LB_ERR)
{
CString strNickname;
m_listBoxUsers.GetText(nCurSel, strNickname);
POSITION pos = m_mapIdsNicknames.GetStartPosition();
while (pos != NULL)
{
long lUserId;
CString strNicknameMap;
m_mapIdsNicknames.GetNextAssoc(pos, lUserId, strNicknameMap);
if (strNickname == strNicknameMap)
{
lResultUserId = lUserId;
pos = NULL;
}
}
}
return lResultUserId;
}