ChWsbCalendar.php

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<?php
 
class ChWsbCalendar
{
    var $iYear, $iMonth, $iPrevYear, $iPrevMonth, $iNextYear, $iNextMonth;
    var $iFirstWeekDay, $iNumDaysInMonth, $sMonthName, $iWeekStart, $iWeekEnd;
 
    function __construct($iYear, $iMonth)
    {
        $aMonths = array (
            1 => '_January',
            2 => '_February',
            3 => '_March',
            4 => '_April',
            5 => '_May',
            6 => '_June',
            7 => '_July',
            8 => '_August',
            9 => '_September',
            10 => '_October',
            11 => '_November',
            12 => '_December',
        );
 
        // input values
        $this->iYear = (int)$iYear ? (int)$iYear : date('Y');
        $this->iMonth = (int)$iMonth ? (int)$iMonth : date('m');
        $this->iDay = date('d');
 
        $this->sMonthName = _t($aMonths[(int)$this->iMonth]);
 
        $this->iNumDaysInMonth = date('t', mktime(0, 0, 0, $this->iMonth+1, $iDay, $this->iYear));
        $this->iFirstWeekDay = (int)date('w', mktime(0, 0, 0, $this->iMonth, 1, $this->iYear));
 
        // previous month year, month
        $this->iPrevYear = $this->iYear;
        $this->iPrevMonth = $this->iMonth - 1;
        if ( $this->iPrevMonth <= 0 ) {
            $this->iPrevMonth = 12;
            $this->iPrevYear--;
        }
        // next month year, month
        $this->iNextYear = $this->iYear;
        $this->iNextMonth = $this->iMonth + 1;
        if ( $this->iNextMonth > 12 ) {
            $this->iNextMonth = 1;
            $this->iNextYear++;
        }
 
        // week config
        list ($this->iWeekStart, $this->iWeekEnd) = (getParam('sys_calendar_starts_sunday') == 'on') ? array (0, 7) : array (1, 8);
        if ($this->iFirstWeekDay < $this->iWeekStart)
            $this->iFirstWeekDay = $this->iWeekEnd-1;
    }
 
    function _getWeekNames ($isMiniMode = false)
    {
        $sPostfix = '';
        if ($isMiniMode)
            $sPostfix = '_mini';
        if(0 == $this->iWeekStart)
            $aWeek[] = array('name' => _t('_week_sun' . $sPostfix));
        $aWeek[] = array('name' => _t('_week_mon' . $sPostfix));
        $aWeek[] = array('name' => _t('_week_tue' . $sPostfix));
        $aWeek[] = array('name' => _t('_week_wed' . $sPostfix));
        $aWeek[] = array('name' => _t('_week_thu' . $sPostfix));
        $aWeek[] = array('name' => _t('_week_fri' . $sPostfix));
        $aWeek[] = array('name' => _t('_week_sat' . $sPostfix));
        if(8 == $this->iWeekEnd)
            $aWeek[] = array('name' => _t('_week_sun' . $sPostfix));
        return $aWeek;
    }
 
    function _getCalendarGrid (&$aCalendarGrid)
    {
        // fill calendar with events
        $aEvents = $this->getData();
        $aCalendar = array ();
 
        foreach ($aEvents as $a) {
            $aCalendar[$a['Day']] += 1;//array('unit' => $this->getUnit($a));
        }
 
        // make calendar grid
        $aCalendarGrid = array ();
        $iCurrentDay = 0;
        for ($i = 0; $i < 6; $i++) {
            for ($j = $this->iWeekStart; $j < $this->iWeekEnd; $j++) {
                if ($this->iFirstWeekDay == $j || $i > 0 || $iCurrentDay > 0) {
                    ++$iCurrentDay;
                    if ($iCurrentDay > $this->iNumDaysInMonth) break 2;
                    $aCalendarGrid[$i][$j]['day'] = $iCurrentDay;
                    $aCalendarGrid[$i][$j]['today'] = ($this->iYear == date('Y') && $this->iMonth == date('m') && $iCurrentDay == $this->iDay);
                    $aCalendarGrid[$i][$j]['num'] = isset($aCalendar[$iCurrentDay]) && $aCalendar[$iCurrentDay] > 0 ? $aCalendar[$iCurrentDay] : '';
                }
            }
        }
    }
 
    function _getCalendar ()
    {
        $sBrowseUri = $this->getBrowseUri();
        list ($sEntriesSingle, $sEntriesMul) = $this->getEntriesNames ();
 
        $this->_getCalendarGrid($aCalendarGrid);
        $aRet = array ();
        for ($i = 0; $i < 6; $i++) {
 
            $aRow = array ('ch_repeat:cell');
            $isRowEmpty = true;
 
            for ($j = $this->iWeekStart; $j < $this->iWeekEnd; $j++) {
 
                $aCell = array ();
 
                if ($aCalendarGrid[$i][$j]['today']) {
                    $aCell['class'] = 'sys_cal_cell sys_cal_today';
                    $aCell['day'] = $aCalendarGrid[$i][$j]['day'];
                    $aCell['ch_if:num'] = array ('condition' => $aCalendarGrid[$i][$j]['num'], 'content' => array(
                        'num' => $aCalendarGrid[$i][$j]['num'],
                        'href' => $sBrowseUri . $this->iYear . '/' . $this->iMonth . '/' . $aCell['day'],
                        'entries' => 1 == $aCalendarGrid[$i][$j]['num'] ? $sEntriesSingle : $sEntriesMul,
                    ));
                    $isRowEmpty = false;
                } elseif (isset($aCalendarGrid[$i][$j]['day'])) {
                    $aCell['class'] = 'sys_cal_cell';
                    $aCell['day'] = $aCalendarGrid[$i][$j]['day'];
                    $aCell['ch_if:num'] = array ('condition' => $aCalendarGrid[$i][$j]['num'], 'content' => array(
                        'num' => $aCalendarGrid[$i][$j]['num'],
                        'href' => $sBrowseUri . $this->iYear . '/' . $this->iMonth . '/' . $aCell['day'],
                        'entries' => 1 == $aCalendarGrid[$i][$j]['num'] ? $sEntriesSingle : $sEntriesMul,
                    ));
                    $isRowEmpty = false;
                } else {
                    $aCell['class'] = 'sys_cal_cell_blank';
                    $aCell['day'] = '';
                    $aCell['ch_if:num'] = array ('condition' => false, 'content' => array(
                        'num' => '',
                        'href' => '',
                        'entries' => '',
                    ));
                }
 
                if ($aCell)
                    $aRow['ch_repeat:cell'][] = $aCell;
            }
 
            if ($aRow['ch_repeat:cell'] && !$isRowEmpty) {
                $aRet[] = $aRow;
            }
        }
        return $aRet;
    }
 
    function getTitle ()
    {
        return $this->sMonthName . ', ' . $this->iYear;
    }
 
 
    // override function below to implement your own calendar
 
    function getData ()
    {
        // override this func
        return array();
    }
 
    function getUnit (&$aData)
    {
        // override this func
        return '';
    }
 
    function getBaseUri ()
    {
        // override this func
        return CH_WSB_URL_ROOT;
    }
 
    function getBrowseUri ()
    {
        // override this func
        return '';
    }
 
    function getEntriesNames ()
    {
        // override this func
        return array(_t('_item'), _t('_items'));
    }
 
    function getMonthUrl ($isNextMoths, $isMiniMode = false)
    {
        return $this->getBaseUri () . ($isNextMoths ? "{$this->iNextYear}/{$this->iNextMonth}" : "{$this->iPrevYear}/{$this->iPrevMonth}");
    }
}