public class Month {
 private List<Week> weeks; 
 public Date firstDate; // always the first of the month
 private Date upperLeft; 
 
 public List<Date> getValidDateRange() { 
  // return one date from the upper left, and one from the lower right
  List<Date> ret = new List<Date>();
  ret.add(upperLeft);
  ret.add(upperLeft.addDays(5*7) );
  return ret;
 }
 
 public String getMonthName() { 
  return DateTime.newInstance(firstDate.year(),firstdate.month(),firstdate.day()).format('MMMM');
 } 
 
 public String getYearName() { 
  return DateTime.newInstance(
  firstDate.year(),firstdate.month(),firstdate.day()).format('yyyy');
 } 
 
 public String[] getWeekdayNames() { 
  Date today = system.today().toStartOfWeek();
  DateTime dt = DateTime.newInstanceGmt(today.year(),today.month(),today.day());  
  list<String> ret = new list<String>();
  for(Integer i = 0; i < 7;i++) { 
   ret.add( dt.formatgmt('EEEE') );
   dt= dt.addDays(1);
  } 
  return ret;
 }
 
 public Date getfirstDate() { return firstDate; } 

 public Month( Date value ) {
  weeks = new List<Week>();
  firstDate = value.toStartOfMonth();
  upperLeft = firstDate.toStartOfWeek();
  Date tmp = upperLeft;
  for (Integer i = 0; i < 5; i++) {
   Week w = new Week(i+1,tmp,value.month()); 
   system.assert(w!=null); 
   this.weeks.add( w );
   tmp = tmp.addDays(7);
  }

 }
 
 public void setEvents(List<Event> ev) { 
  // merge these events into the proper day 
  for(Event e:ev) { 
   for(Week w:weeks) { 
    for(Day c: w.getDays() ) { 
     if ( e.ActivityDate.isSameDay(c.theDate))  { 
      // add this event to this calendar date
      c.eventsToday.add(new EventItem(e));
      // add only three events, then a More... label if there are more
     } 
    } 
   } 
  }
 }
 
 public List<Week> getWeeks() { 
  system.assert(weeks!=null,'could not create weeks list');
  return this.weeks; 
 }
  

 /* 
  * helper classes to define a month in terms of week and day
  */
 public class Week {
  public List<Day> days;
  public Integer weekNumber; 
  public Date startingDate; // the date that the first of this week is on
  // so sunday of this week
  
  public List<Day> getDays() { return this.days; }
  
  public Week () { 
   days = new List<Day>();  
  }
  public Week(Integer value,Date sunday,Integer month) { 
   this();
   weekNumber = value;
   startingDate = sunday;
   Date tmp = startingDate;
   for (Integer i = 0; i < 7; i++) {
    Day d = new Day( tmp,month ); 
    tmp = tmp.addDays(1);
    d.dayOfWeek = i+1;    
   // system.debug(d);
    days.add(d);
   } 
   
  }
  public Integer getWeekNumber() { return this.weekNumber;}
  public Date getStartingDate() { return this.startingDate;}
  
 }
 
 public class Day {
   
  public Date   theDate;
  public List<EventItem>  eventsToday; // list of events for this date
  public Integer   month, dayOfWeek;
  public String   formatedDate; // for the formated time  
  private String   cssclass = 'calActive';
   
  public Date   getDate() { return theDate; }
  public Integer   getDayOfMonth() { return theDate.day(); }
  public String   getDayOfMonth2() { 
   if ( theDate.day() <= 9 ) 
    return '0'+theDate.day(); 
   return String.valueof( theDate.day()); 
  }
  public Integer getDayOfYear() { return theDate.dayOfYear(); }
  public List<EventItem>  getDayAgenda() { return eventsToday; }
  public String   getFormatedDate() { return formatedDate; }
  public Integer   getDayNumber() { return dayOfWeek; }
  public List<EventItem>  getEventsToday() { return eventsToday; }
  public String   getCSSName() {  return cssclass; }
  
  public Day(Date value,Integer vmonth) { 
   theDate=value; month=vmonth;   
   formatedDate = '12 21 08';// time range..
   //9:00 AM - 1:00 PM
   eventsToday = new List<EventItem>();  
   // three possible Inactive,Today,Active  
   if ( theDate.daysBetween(System.today()) == 0 ) cssclass ='calToday';
   // define inactive, is the date in the month—
   if ( theDate.month() != month) cssclass = 'calInactive';
  }
   
 }

/* static testMethod void testMe() {
  Month m = new Month( Date.newInstance(2007,11,1) );
  system.assert(m!=null); 
  List<Week> l = m.getWeeks(); 
  repeatcon r = new repeatcon(); 
  system.debug(m.getMonthName());
  Month mm = r.getMonth();
  //system.debug(mm); 
  system.debug(m.getFirstDate());
  system.debug(m.getWeekdayNames());
  for(Week w:r.getWeeks()) { 
   for(Day c:w.days) {   
    if (c.eventsToday.size() > 0 ) { 
     String ss = String.valueOf(c.eventsToday[0].ev.ActivityDate);
     ss = c.eventsToday[0].ev.ActivityDateTime.format('MMMM a');
     //system.debug(ss);
     //system.debug(c.eventsToday[0].ev);
    } 
   } 
  } 
 }*/
}