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<?php
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/* vim: set expandtab tabstop=4 shiftwidth=4: */
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//
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// +----------------------------------------------------------------------+
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// | PHP Version 4 |
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// +----------------------------------------------------------------------+
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// | Copyright (c) 1997-2002 The PHP Group |
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// +----------------------------------------------------------------------+
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// | This source file is subject to version 2.02 of the PHP license, |
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// | that is bundled with this package in the file LICENSE, and is |
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// | available at through the world-wide-web at |
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// | http://www.php.net/license/3_0.txt. |
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// | If you did not receive a copy of the PHP license and are unable to |
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// | obtain it through the world-wide-web, please send a note to |
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// | license@php.net so we can mail you a copy immediately. |
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// +----------------------------------------------------------------------+
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// | Authors: Harry Fuecks <hfuecks@phppatterns.com> |
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// | Lorenzo Alberton <l dot alberton at quipo dot it> |
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// +----------------------------------------------------------------------+
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//
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// $Id: Weekday.php,v 1.3 2004/08/16 12:25:15 hfuecks Exp $
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//
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/**
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* @package Calendar
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* @version $Id: Weekday.php,v 1.3 2004/08/16 12:25:15 hfuecks Exp $
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*/
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/**
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* Allows Calendar include path to be redefined
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* @ignore
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*/
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if (!defined('CALENDAR_ROOT')) {
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define('CALENDAR_ROOT', 'Calendar'.DIRECTORY_SEPARATOR);
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}
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/**
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* Load Calendar decorator base class
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*/
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require_once CALENDAR_ROOT.'Decorator.php';
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/**
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* Load a Calendar_Day
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*/
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require_once CALENDAR_ROOT.'Day.php';
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/**
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* Decorator for fetching the day of the week
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* <code>
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* $Day = new Calendar_Day(2003, 10, 23);
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* $Weekday = & new Calendar_Decorator_Weekday($Day);
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* $Weekday->setFirstDay(0); // Set first day of week to Sunday (default Mon)
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* echo $Weekday->thisWeekDay(); // Displays 5 - fifth day of week relative to Sun
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* </code>
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* @package Calendar
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* @access public
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*/
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class Calendar_Decorator_Weekday extends Calendar_Decorator
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{
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/**
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* First day of week
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* @var int (default = 1 for Monday)
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* @access private
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*/
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var $firstDay = 1;
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/**
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* Constructs Calendar_Decorator_Weekday
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* @param object subclass of Calendar
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* @access public
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*/
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function Calendar_Decorator_Weekday(& $Calendar)
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{
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parent::Calendar_Decorator($Calendar);
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}
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/**
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* Sets the first day of the week (0 = Sunday, 1 = Monday (default) etc)
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* @param int first day of week
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* @return void
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* @access public
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*/
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function setFirstDay($firstDay) {
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$this->firstDay = (int)$firstDay;
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}
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/**
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* Returns the previous weekday
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* @param string (default = 'int') return value format
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* @return int numeric day of week or timestamp
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* @access public
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*/
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function prevWeekDay($format = 'int')
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{
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$ts = $this->calendar->prevDay('timestamp');
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$Day = new Calendar_Day(2000,1,1);
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$Day->setTimeStamp($ts);
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$day = $this->calendar->cE->getDayOfWeek($Day->thisYear(),$Day->thisMonth(),$Day->thisDay());
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$day = $this->adjustWeekScale($day);
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return $this->returnValue('Day', $format, $ts, $day);
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}
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/**
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* Returns the current weekday
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* @param string (default = 'int') return value format
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* @return int numeric day of week or timestamp
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* @access public
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*/
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function thisWeekDay($format = 'int')
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{
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$ts = $this->calendar->thisDay('timestamp');
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$day = $this->calendar->cE->getDayOfWeek($this->calendar->year,$this->calendar->month,$this->calendar->day);
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$day = $this->adjustWeekScale($day);
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return $this->returnValue('Day', $format, $ts, $day);
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}
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/**
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* Returns the next weekday
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* @param string (default = 'int') return value format
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* @return int numeric day of week or timestamp
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* @access public
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*/
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function nextWeekDay($format = 'int')
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{
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$ts = $this->calendar->nextDay('timestamp');
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$Day = new Calendar_Day(2000,1,1);
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$Day->setTimeStamp($ts);
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$day = $this->calendar->cE->getDayOfWeek($Day->thisYear(),$Day->thisMonth(),$Day->thisDay());
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$day = $this->adjustWeekScale($day);
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return $this->returnValue('Day', $format, $ts, $day);
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}
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/**
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* Adjusts the day of the week relative to the first day of the week
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* @param int day of week calendar from Calendar_Engine
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* @return int day of week adjusted to first day
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* @access private
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*/
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function adjustWeekScale($dayOfWeek) {
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$dayOfWeek = $dayOfWeek - $this->firstDay;
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if ( $dayOfWeek >= 0 ) {
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return $dayOfWeek;
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} else {
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return $this->calendar->cE->getDaysInWeek(
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$this->calendar->year,$this->calendar->month,$this->calendar->day
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) + $dayOfWeek;
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}
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}
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}
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?>
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