Also Check for validity in comparrison operators

[wxWidgets.git] / samples / calendar / calendar.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        calendar.cpp
// Purpose:     wxCalendarCtrl sample
// Author:      Vadim Zeitlin
// Modified by:
// Created:     02.01.00
// RCS-ID:      $Id$
// Copyright:   (c) Vadim Zeitlin
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

// ============================================================================
// declarations
// ============================================================================

// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------

#if defined(__GNUG__) && !defined(__APPLE__)
    #pragma implementation "calendar.cpp"
    #pragma interface "calendar.cpp"
#endif

// For compilers that support precompilation, includes "wx/wx.h".
#include "wx/wxprec.h"

#ifdef __BORLANDC__
    #pragma hdrstop
#endif

// for all others, include the necessary headers
#ifndef WX_PRECOMP
    #include "wx/app.h"
    #include "wx/log.h"
    #include "wx/frame.h"
    #include "wx/panel.h"
    #include "wx/stattext.h"
    #include "wx/menu.h"
    #include "wx/layout.h"
    #include "wx/msgdlg.h"
#endif

#include "wx/sizer.h"
#include "wx/calctrl.h"

// ----------------------------------------------------------------------------
// private classes
// ----------------------------------------------------------------------------

// Define a new application type, each program should derive a class from wxApp
class MyApp : public wxApp
{
public:
    // override base class virtuals
    // ----------------------------

    // this one is called on application startup and is a good place for the app
    // initialization (doing it here and not in the ctor allows to have an error
    // return: if OnInit() returns false, the application terminates)
    virtual bool OnInit();
};

class MyPanel : public wxPanel
{
public:
    MyPanel(wxFrame *frame);

    void OnCalendar(wxCalendarEvent& event);
    void OnCalendarWeekDayClick(wxCalendarEvent& event);
    void OnCalendarChange(wxCalendarEvent& event);
    void OnCalMonthChange(wxCalendarEvent& event);
    void OnCalYearChange(wxCalendarEvent& event);

    wxCalendarCtrl *GetCal() const { return m_calendar; }

    // turn on/off the specified style bit on the calendar control
    void ToggleCalStyle(bool on, int style);

    void HighlightSpecial(bool on);

    void SetDate();
    void Today();
    
private:
    wxCalendarCtrl *m_calendar;
    wxStaticText   *m_date;

    DECLARE_EVENT_TABLE()
};

// Define a new frame type: this is going to be our main frame
class MyFrame : public wxFrame
{
public:
    // ctor(s)
    MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size);

    // event handlers (these functions should _not_ be virtual)
    void OnQuit(wxCommandEvent& event);
    void OnAbout(wxCommandEvent& event);

    void OnCalMonday(wxCommandEvent& event);
    void OnCalHolidays(wxCommandEvent& event);
    void OnCalSpecial(wxCommandEvent& event);

    void OnCalAllowMonth(wxCommandEvent& event);
    void OnCalAllowYear(wxCommandEvent& event);

    void OnCalSeqMonth(wxCommandEvent& event);
    void OnCalShowSurroundingWeeks(wxCommandEvent& event);

    void OnSetDate(wxCommandEvent& event);
    void OnToday(wxCommandEvent& event);

    void OnAllowYearUpdate(wxUpdateUIEvent& event);

private:
    MyPanel *m_panel;

    // any class wishing to process wxWindows events must use this macro
    DECLARE_EVENT_TABLE()
};

// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------

// IDs for the controls and the menu commands
enum
{
    // menu items
    Calendar_File_About = 100,
    Calendar_File_Quit,
    Calendar_Cal_Monday = 200,
    Calendar_Cal_Holidays,
    Calendar_Cal_Special,
    Calendar_Cal_Month,
    Calendar_Cal_Year,
    Calendar_Cal_SeqMonth,
    Calendar_Cal_SurroundWeeks,
    Calendar_Cal_SetDate,
    Calendar_Cal_Today,
    Calendar_CalCtrl = 1000
};

// ----------------------------------------------------------------------------
// event tables and other macros for wxWindows
// ----------------------------------------------------------------------------

// the event tables connect the wxWindows events with the functions (event
// handlers) which process them. It can be also done at run-time, but for the
// simple menu events like this the static method is much simpler.
BEGIN_EVENT_TABLE(MyFrame, wxFrame)
    EVT_MENU(Calendar_File_Quit,  MyFrame::OnQuit)
    EVT_MENU(Calendar_File_About, MyFrame::OnAbout)

    EVT_MENU(Calendar_Cal_Monday, MyFrame::OnCalMonday)
    EVT_MENU(Calendar_Cal_Holidays, MyFrame::OnCalHolidays)
    EVT_MENU(Calendar_Cal_Special, MyFrame::OnCalSpecial)

    EVT_MENU(Calendar_Cal_Month, MyFrame::OnCalAllowMonth)
    EVT_MENU(Calendar_Cal_Year, MyFrame::OnCalAllowYear)

    EVT_MENU(Calendar_Cal_SeqMonth, MyFrame::OnCalSeqMonth)
    EVT_MENU(Calendar_Cal_SurroundWeeks, MyFrame::OnCalShowSurroundingWeeks)

    EVT_MENU(Calendar_Cal_SetDate, MyFrame::OnSetDate)
    EVT_MENU(Calendar_Cal_Today, MyFrame::OnToday)


    EVT_UPDATE_UI(Calendar_Cal_Year, MyFrame::OnAllowYearUpdate)
END_EVENT_TABLE()

BEGIN_EVENT_TABLE(MyPanel, wxPanel)
    EVT_CALENDAR            (Calendar_CalCtrl,   MyPanel::OnCalendar)
    EVT_CALENDAR_MONTH      (Calendar_CalCtrl,   MyPanel::OnCalMonthChange)
    EVT_CALENDAR_YEAR       (Calendar_CalCtrl,   MyPanel::OnCalYearChange)
    EVT_CALENDAR_SEL_CHANGED(Calendar_CalCtrl,   MyPanel::OnCalendarChange)
    EVT_CALENDAR_WEEKDAY_CLICKED(Calendar_CalCtrl, MyPanel::OnCalendarWeekDayClick)
END_EVENT_TABLE()

// Create a new application object: this macro will allow wxWindows to create
// the application object during program execution (it's better than using a
// static object for many reasons) and also declares the accessor function
// wxGetApp() which will return the reference of the right type (i.e. MyApp and
// not wxApp)
IMPLEMENT_APP(MyApp)

// ============================================================================
// implementation
// ============================================================================

// ----------------------------------------------------------------------------
// the application class
// ----------------------------------------------------------------------------

// `Main program' equivalent: the program execution "starts" here
bool MyApp::OnInit()
{
    // Create the main application window
    MyFrame *frame = new MyFrame(_T("Calendar wxWindows sample"),
                                 wxPoint(50, 50), wxSize(450, 340));

    frame->Show(true);

    // success: wxApp::OnRun() will be called which will enter the main message
    // loop and the application will run. If we returned FALSE here, the
    // application would exit immediately.
    return true;
}

// ----------------------------------------------------------------------------
// main frame
// ----------------------------------------------------------------------------

// frame constructor
MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
       : wxFrame((wxFrame *)NULL, wxID_ANY, title, pos, size)
{
    // create a menu bar
    wxMenu *menuFile = new wxMenu;

    menuFile->Append(Calendar_File_About, _T("&About...\tCtrl-A"), _T("Show about dialog"));
    menuFile->AppendSeparator();
    menuFile->Append(Calendar_File_Quit, _T("E&xit\tAlt-X"), _T("Quit this program"));

    wxMenu *menuCal = new wxMenu;
    menuCal->Append(Calendar_Cal_Monday,
                    _T("Monday &first weekday\tCtrl-F"),
                    _T("Toggle between Mon and Sun as the first week day"),
                    true);
    menuCal->Append(Calendar_Cal_Holidays, _T("Show &holidays\tCtrl-H"),
                    _T("Toggle highlighting the holidays"),
                    true);
    menuCal->Append(Calendar_Cal_Special, _T("Highlight &special dates\tCtrl-S"),
                    _T("Test custom highlighting"),
                    true);
    menuCal->Append(Calendar_Cal_SurroundWeeks,
                    _T("Show s&urrounding weeks\tCtrl-W"),
                    _T("Show the neighbouring weeks in the prev/next month"),
                    true);
    menuCal->AppendSeparator();
    menuCal->Append(Calendar_Cal_SeqMonth,
                    _T("To&ggle month selector style\tCtrl-G"),
                    _T("Use another style for the calendar controls"),
                    true);
    menuCal->Append(Calendar_Cal_Month, _T("&Month can be changed\tCtrl-M"),
                    _T("Allow changing the month in the calendar"),
                    true);
    menuCal->Append(Calendar_Cal_Year, _T("&Year can be changed\tCtrl-Y"),
                    _T("Allow changing the year in the calendar"),
                    true);
    menuCal->AppendSeparator();
    menuCal->Append(Calendar_Cal_SetDate, _T("SetDate()"), _T("Set date to 2005-12-24."));
    menuCal->Append(Calendar_Cal_Today, _T("Today()"), _T("Set the current date."));

    // now append the freshly created menu to the menu bar...
    wxMenuBar *menuBar = new wxMenuBar;
    menuBar->Append(menuFile, _T("&File"));
    menuBar->Append(menuCal, _T("&Calendar"));

    menuBar->Check(Calendar_Cal_Monday, true);
    menuBar->Check(Calendar_Cal_Holidays, true);
    menuBar->Check(Calendar_Cal_Month, true);
    menuBar->Check(Calendar_Cal_Year, true);

    // ... and attach this menu bar to the frame
    SetMenuBar(menuBar);

    m_panel = new MyPanel(this);

#if wxUSE_STATUSBAR
    // create a status bar just for fun (by default with 1 pane only)
    CreateStatusBar(2);
    SetStatusText(_T("Welcome to wxWindows!"));
#endif // wxUSE_STATUSBAR
}

void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
{
    // TRUE is to force the frame to close
    Close(true);
}

void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
{