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<?php
/**
* @package SPLIB
* @version $Id: Month.php,v 1.2 2005/09/05 05:46:44 kevin Exp $
*/
/**
* Define include path and include required files
*/
@define('CALENDAR_PATH','DateTime/');
require_once(CALENDAR_PATH.'DateMath.php');
require_once(CALENDAR_PATH.'Calendar.php');
/**
* Represents a Month and builds Days or Weeks<br />
* <b>Note:</b> this class provides two alternative methods
* to build(), Month::buildWeekDays() and Month::buildWeeks().<br />
* <b>Note:</b> requires the DateMath class be declared
* <code>
* $month = new Month(2003,8);
* $month->build();
* while ( $day = $month->fetch() ) {
* echo ( $day->thisDay().' ' );
* }
* </code>
* @package SPLIB
*/
class Month extends Calendar
{
/**
* Stores an instance of DateMath
* @access private
* @var DateMath
*/
var $dateMath;
/**
* First day of the week
* @access private
* @var string
*/
var $firstDay;
/**
* The seven days of the week named
* @access private
* @var array
*/
var $weekDayNames;
/**
* Days of the week ordered with $firstDay at the beginning
* @access private
* @var array
*/
var $daysOfWeek = array();
/**
* Days of the month built from days of the week
* @access private
* @var array
*/
var $daysOfMonth = array();
/**
* Constructs Month
* @param int year e.g. 2003
* @param int month e.g. 5
* @param string first day of the week e.g. Monday (optional)
* @access public
*/
function Month($y,$m,$firstDay='Monday')
{
Calendar::Calendar($y,$m);
$this->firstDay=$firstDay;
$this->weekDayNames = array(
'Monday', 'Tuesday', 'Wednesday', 'Thursday',
'Friday', 'Saturday', 'Sunday');
$this->dateMath = new DateMath($this->year,$this->month,1,0,0,0);
$this->setFirstDay();
}
/**
* Constructs $this->daysOfWeek based on $this->firstDay
* @return void
* @access private
*/
function setFirstDay()
{
$endDays = array();
$tmpDays = array();
$begin = false;
foreach ( $this->weekDayNames as $day ) {
if ( $begin == true ) {
$endDays[] = $day;
} else if ( $day == $this->firstDay ) {
$begin = true;
$endDays[] = $day;
} else {
$tmpDays[] = $day;
}
}
$this->daysOfWeek = array_merge($endDays, $tmpDays);
}
/**
* Constructs $this->daysOfMonth
* @return void
* @access private
*/
function setDaysOfMonth()
{
$this->daysOfMonth = $this->daysOfWeek;
$daysInMonth = $this->dateMath->daysInMonth();
$start=0;
foreach ( $this->daysOfMonth as $dayOfWeek ) {
if ( $this->dateMath->firstDayInMonth() == $dayOfWeek ) {
break;
}
$start++;
}
$numWeeks = ceil(($daysInMonth + $start)/7);
for ( $i=1; $i<$numWeeks; $i++ ) {
$this->daysOfMonth =
array_merge($this->daysOfMonth,$this->daysOfWeek);
}
}
/**
* Builds Day objects for this Month. Creates as many Day objects
* as there are days in the month
* <code>
* $month = new Month(2003,8);
* $selectedDays = array ( new Day(2003,8,13) );
* $month->build( $selectedDays );
* while ( $day = $month->fetch() ) {
* if ( $day->isSelected() )
* echo ( '<b>'.$day->thisDay().'</b> ' );
* else
* echo ( $day->thisDay().' ' );
* }
* </code>
* @param array of Day objects representing selected dates (optional)
* @return boolean
* @access public
*/
function build($sDates=array()) {
require_once(CALENDAR_PATH.'Day.php');
$daysInMonth = $this->dateMath->daysInMonth();
for ( $i=1;$i<=$daysInMonth;$i++) {
$this->children[$i]=new Day($this->year, $this->month, $i);
$dayOfWeekNum = $i % 7;
foreach ( $sDates as $sDate ) {
if ( $this->year == $sDate->thisYear()
&& $this->month == $sDate->thisMonth()
&& $i == $sDate->thisDay() )
$this->children[$i]->setSelected();
}
}
return true;
}
/**
* Builds Day objects for this Month grouped by week. This method
* can be used to provide a "formatted" view of a Month, where some
* Day objects are "empty" and week beginnings and ends can be
* indentified
* <code>
* $month = new Month(2003,8);
* $month->buildWeekDays();
* while ( $day = $month->fetch() ) {
* if ( $day->isStart() )
* echo ( '<tr>' );
* if ( $day->isEmpty() )
* echo ( '<td> </td>' );
* else
* echo ( '<td>'.$day->thisDay().'</td>' );
* if ( $day->isEnd() )
* echo ( "</tr>\n" );
* }
* </code>
* @see Day::isEmpty()
* @see Day::isFirst()
* @see Day::isLast()
* @param array of Day objects representing selected dates (optional)
* @return boolean
* @access public
*/
function buildWeekDays($sDates=array()) {
require_once(CALENDAR_PATH.'Day.php');
$this->setDaysOfMonth();
$dayOfMonth = 1;
$start = false;
$end = false;
$sizeDaysOfMonth = count($this->daysOfMonth);
for ( $i = 1; $i <= $sizeDaysOfMonth; $i++ ) {
$this->children[$i] =
new Day($this->year, $this->month, $dayOfMonth);
if ( $i <= 7 ) {
if ( $i == 1 )
$this->children[$i]->setFirst();
else if ( $i == 7 )
$this->children[$i]->setLast();
if ( $this->dateMath->firstDayInMonth() == $this->daysOfMonth[$i-1] )
$start = true;
if ( $start )
$dayOfMonth++;
else
$this->children[$i]->setEmpty();
} else if ( $i > ($sizeDaysOfMonth - 7) ) {
if ( $i == ($sizeDaysOfMonth - 6) )
$this->children[$i]->setFirst();
else if ( $i == $sizeDaysOfMonth )
$this->children[$i]->setLast();
if ( !$end && $dayOfMonth == $this->dateMath->daysInMonth() ) {
$end = true;
$dayOfMonth = 1;
} else if ( $end ) {
$this->children[$i]->setEmpty();
} else {
$dayOfMonth++;
}
} else {
if ( ($i-1) % 7 == 0)
$this->children[$i]->setFirst();
else if ($i % 7 == 0)
$this->children[$i]->setLast();
$dayOfMonth++;
}
foreach ( $sDates as $sDate ) {
if ( $this->year == $sDate->thisYear()
&& $this->month == $sDate->thisMonth()
&& ($dayOfMonth-1) == $sDate->thisDay()
&& !$this->children[$i]->isEmpty() )
$this->children[$i]->setSelected();
}
}
return true;
}
/**
* Builds Week objects for the Month. Note that Weeks will contain
* "empty" days.
* <code>
* $month = new Month(2003,8);
* $month->build( );
* while ( $week = $month->fetch() ) {
* echo ( $week->thisWeek() );
* }
* </code>
* @param array of Week objects representing selected dates (optional)
* @return boolean
* @access public
*/
function buildWeeks($sDates=array()) {
require_once(CALENDAR_PATH.'Week.php');
$this->setDaysOfMonth();
$numWeeks = count($this->daysOfMonth) / 7;
for ( $i=1;$i<=$numWeeks;$i++ ) {
$this->children[$i] = new Week(
$this->year,$this->month,$i,$this->firstDay);
foreach ( $sDates as $sDate ) {
if ( $this->year == $sDate->thisYear()
&& $this->month == $sDate->thisMonth()
&& $i == $sDate->thisWeek() )
$this->children[$i]->setSelected();
}
}
return true;
}
}
?>
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