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// Observer_DemoDlg.cpp : implementation file
//
#include "stdafx.h"
#include "Observer_Demo.h"
#include "Observer_DemoDlg.h"
#include "weather_forecast.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
// For simplicity the objects of our weather forecasting system are declared as globals
// and initialized in OnInitDialog()
// Subjects
Strategy g_Strategy; // The global forecast strategy
TempSens g_TempSens; // a temperature sensor
// Observers
HurrDet g_HurrDet; // Monitors Strategy and TempSens
Technician g_Technician; // Monitors TempSens for physical state events
/////////////////////////////////////////////////////////////////////////////
// CMainDlg dialog
CMainDlg::CMainDlg(CWnd* pParent /*=NULL*/)
: CDialog(CMainDlg::IDD, pParent)
{
//{{AFX_DATA_INIT(CMainDlg)
m_fTemperature = 0.0;
m_fThreshold = 0.0;
//}}AFX_DATA_INIT
// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}
void CMainDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CMainDlg)
DDX_Control(pDX, IDE_OUTPUT, m_ctrlOutput);
DDX_Text(pDX, IDE_TEMP, m_fTemperature);
DDX_Text(pDX, IDE_THRESH, m_fThreshold);
//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CMainDlg, CDialog)
//{{AFX_MSG_MAP(CMainDlg)
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_BN_CLICKED(IDB_APPLY_TEMP, OnApplyTemp)
ON_BN_CLICKED(IDB_APPLY_TRESH, OnApplyTresh)
ON_BN_CLICKED(IDB_NEWSTRATEGY, OnNewstrategy)
ON_BN_CLICKED(IDB_OTHER, OnOtherEvent)
ON_BN_CLICKED(IDB_POWER, OnPowerEvent)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CMainDlg message handlers
BOOL CMainDlg::OnInitDialog()
{
CDialog::OnInitDialog();
// 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
// Set our edit control as output for any text logging
theApp.m_OutLogger.SetEditCtrl( m_ctrlOutput.m_hWnd );
// Add Technician to the list of TempSens observers
g_Technician.SetTempSensor( &g_TempSens );
// Add HurrDet to the list of TempSens and Strategys observers
g_HurrDet.SetTempSensor( &g_TempSens, m_fThreshold );
g_HurrDet.SetStrategy( &g_Strategy );
return TRUE; // return TRUE unless you set the focus to a control
}
// 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 CMainDlg::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 CMainDlg::OnQueryDragIcon()
{
return (HCURSOR) m_hIcon;
}
void CMainDlg::OnApplyTemp()
{
UpdateData();
g_TempSens.SetTemp( m_fTemperature );
}
void CMainDlg::OnApplyTresh()
{
UpdateData();
g_HurrDet.SetTempSensor( &g_TempSens, m_fThreshold );
}
void CMainDlg::OnNewstrategy()
{
g_Strategy.StrategyChanged();
}
void CMainDlg::OnOtherEvent()
{
g_TempSens.TechEvent( TempSens::eOtherFailure );
}
void CMainDlg::OnPowerEvent()
{
g_TempSens.TechEvent( TempSens::ePowerFailure );
}
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Daniel Lohmann (
daniel@losoft.de) is Assistant Professor at the
Distributed Systems and Operating Systems department at Friedrich-Alexander-University Erlangen-Nuremberg, Germany. His main research topic is the design of a highly customizable and scalable operating system product line for deeply embedded systems using static configuration and aspect-oriented techniques. Before joining Universität Erlangen he worked as a freelance trainer and consultant for NT system programming, advanced C++ programming and OOA/OOD. He is interested in upcoming programming techniques like aspect-oriented programming, generative programming and C++ meta coding and has written some nice and handy tools for Windows NT which you can download at his
web site.