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493 ddelon 1
<?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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// +----------------------------------------------------------------------+
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//
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// $Id: Weekdays.php,v 1.1 2005-09-30 14:58:00 ddelon Exp $
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//
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/**
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 * @package Calendar
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 * @version $Id: Weekdays.php,v 1.1 2005-09-30 14:58:00 ddelon 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 base class
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 */
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require_once CALENDAR_ROOT.'Calendar.php';
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/**
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 * Load base month
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 */
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require_once CALENDAR_ROOT.'Month.php';
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/**
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 * Represents a Month and builds Days in tabular form<br>
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 * <code>
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 * require_once 'Calendar'.DIRECTORY_SEPARATOR.'Month'.DIRECTORY_SEPARATOR.'Weekdays.php';
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 * $Month = & new Calendar_Month_Weekdays(2003, 10); // Oct 2003
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 * $Month->build(); // Build Calendar_Day objects
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 * while ($Day = & $Month->fetch()) {
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 *     if ($Day->isFirst()) {
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 *         echo '<tr>';
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 *     }
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 *     if ($Day->isEmpty()) {
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 *         echo '<td>&nbsp;</td>';
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 *     } else {
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 *         echo '<td>'.$Day->thisDay().'</td>';
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 *     }
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 *     if ($Day->isLast()) {
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 *         echo '</tr>';
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 *     }
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 * }
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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_Month_Weekdays extends Calendar_Month
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{
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    /**
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     * Instance of Calendar_Table_Helper
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     * @var Calendar_Table_Helper
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     * @access private
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     */
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    var $tableHelper;
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    /**
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     * First day of the week
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     * @access private
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     * @var string
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     */
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    var $firstDay;
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    /**
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     * Constructs Calendar_Month_Weekdays
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     * @param int year e.g. 2003
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     * @param int month e.g. 5
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     * @param int (optional) first day of week (e.g. 0 for Sunday, 2 for Tuesday etc.)
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     * @access public
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     */
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    function Calendar_Month_Weekdays($y, $m, $firstDay=false)
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    {
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        Calendar_Month::Calendar_Month($y, $m);
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        $this->firstDay = $firstDay;
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    }
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    /**
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     * Builds Day objects in tabular form, to allow display of calendar month
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     * with empty cells if the first day of the week does not fall on the first
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     * day of the month.
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     * @see Calendar_Day::isEmpty()
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     * @see Calendar_Day_Base::isFirst()
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     * @see Calendar_Day_Base::isLast()
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     * @param array (optional) Calendar_Day objects representing selected dates
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     * @return boolean
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     * @access public
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     */
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    function build($sDates=array())
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    {
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        require_once CALENDAR_ROOT.'Table'.DIRECTORY_SEPARATOR.'Helper.php';
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        $this->tableHelper = & new Calendar_Table_Helper($this, $this->firstDay);
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        Calendar_Month::build($sDates);
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        $this->buildEmptyDaysBefore();
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        $this->shiftDays();
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        $this->buildEmptyDaysAfter();
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        $this->setWeekMarkers();
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        return true;
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    }
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    /**
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     * Prepends empty days before the real days in the month
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     * @return void
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     * @access private
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     */
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    function buildEmptyDaysBefore()
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    {
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        $eBefore = $this->tableHelper->getEmptyDaysBefore();
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        for ($i=0; $i < $eBefore; $i++) {
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            $stamp = $this->cE->dateToStamp($this->year, $this->month, -$i);
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            $Day = new Calendar_Day(
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                                $this->cE->stampToYear($stamp),
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                                $this->cE->stampToMonth($stamp),
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                                $this->cE->stampToDay($stamp));
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            $Day->setEmpty();
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            array_unshift($this->children, $Day);
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        }
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    }
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    /**
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     * Shifts the array of children forward, if necessary
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     * @return void
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     * @access private
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     */
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    function shiftDays()
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    {
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        if (isset ($this->children[0])) {
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            array_unshift($this->children, null);
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            unset($this->children[0]);
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        }
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    }
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    /**
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     * Appends empty days after the real days in the month
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     * @return void
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     * @access private
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     */
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    function buildEmptyDaysAfter()
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    {
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        $eAfter = $this->tableHelper->getEmptyDaysAfter();
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        $sDOM = $this->tableHelper->getNumTableDaysInMonth();
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        for ($i = 1; $i <= $sDOM-$eAfter; $i++) {
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            $Day = new Calendar_Day($this->year, $this->month+1, $i);
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            $Day->setEmpty();
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            array_push($this->children, $Day);
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        }
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    }
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    /**
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     * Sets the "markers" for the beginning and of a of week, in the
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     * built Calendar_Day children
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     * @return void
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     * @access private
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     */
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    function setWeekMarkers()
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    {
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        $dIW  = $this->cE->getDaysInWeek(
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            $this->thisYear(),
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            $this->thisMonth(),
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            $this->thisDay()
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        );
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        $sDOM = $this->tableHelper->getNumTableDaysInMonth();
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        for ($i=1; $i <= $sDOM; $i+= $dIW) {
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            $this->children[$i]->setFirst();
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            $this->children[$i+($dIW-1)]->setLast();
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        }
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    }
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}
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?>