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<?php

/* vim: set expandtab tabstop=4 shiftwidth=4: */

//

// +----------------------------------------------------------------------+

// | PHP Version 4                                                        |

// +----------------------------------------------------------------------+

// | Copyright (c) 1997-2002 The PHP Group                                |

// +----------------------------------------------------------------------+

// | This source file is subject to version 2.02 of the PHP license,      |

// | that is bundled with this package in the file LICENSE, and is        |

// | available at through the world-wide-web at                           |

// | http://www.php.net/license/3_0.txt.                                  |

// | If you did not receive a copy of the PHP license and are unable to   |

// | obtain it through the world-wide-web, please send a note to          |

// | license@php.net so we can mail you a copy immediately.               |

// +----------------------------------------------------------------------+

// | Authors: Harry Fuecks <hfuecks@phppatterns.com>                      |

// +----------------------------------------------------------------------+

//

// $Id: Decorator.php,v 1.3 2005/10/22 10:29:46 quipo Exp $

//

/**

 * @package Calendar

 * @version $Id: Decorator.php,v 1.3 2005/10/22 10:29:46 quipo Exp $

 */

/**

 * Decorates any calendar class.

 * Create a subclass of this class for your own "decoration".

 * Used for "selections"

 * <code>

 * class DayDecorator extends Calendar_Decorator

 * {

 *     function thisDay($format = 'int')

 *     {

.*         $day = parent::thisDay('timestamp');

.*         return date('D', $day);

 *     }

 * }

 * $Day = & new Calendar_Day(2003, 10, 25);

 * $DayDecorator = & new DayDecorator($Day);

 * echo $DayDecorator->thisDay(); // Outputs "Sat"

 * </code>

 * @abstract

 * @package Calendar

 */

class Calendar_Decorator

{

    /**

     * Subclass of Calendar being decorated

     * @var object

     * @access private

     */

    var $calendar;

    /**

     * Constructs the Calendar_Decorator

     * @param object subclass to Calendar to decorate

     */

    function Calendar_Decorator(& $calendar)

    {

        $this->calendar = & $calendar;

    }

    /**

     * Defines the calendar by a Unix timestamp, replacing values

     * passed to the constructor

     * @param int Unix timestamp

     * @return void

     * @access public

     */

    function setTimestamp($ts)

    {

        $this->calendar->setTimestamp($ts);

    }

    /**

     * Returns a timestamp from the current date / time values. Format of

     * timestamp depends on Calendar_Engine implementation being used

     * @return int timestamp

     * @access public

     */

    function getTimestamp()

    {

        return $this->calendar->getTimeStamp();

    }

    /**

     * Defines calendar object as selected (e.g. for today)

     * @param boolean state whether Calendar subclass

     * @return void

     * @access public

     */

    function setSelected($state = true)

    {

        $this->calendar->setSelected($state = true);

    }

    /**

     * True if the calendar subclass object is selected (e.g. today)

     * @return boolean

     * @access public

     */

    function isSelected()

    {

        return $this->calendar->isSelected();

    }

    /**

     * Adjusts the date (helper method)

     * @return void

     * @access public

     */

    function adjust()

    {

        $this->calendar->adjust();

    }

    /**

     * Returns the date as an associative array (helper method)

     * @param mixed timestamp (leave empty for current timestamp)

     * @return array

     * @access public

     */

    function toArray($stamp=null)

    {

        return $this->calendar->toArray($stamp);

    }

    /**

     * Returns the value as an associative array (helper method)

     * @param string type of date object that return value represents

     * @param string $format ['int' | 'array' | 'timestamp' | 'object']

     * @param mixed timestamp (depending on Calendar engine being used)

     * @param int integer default value (i.e. give me the answer quick)

     * @return mixed

     * @access private

     */

    function returnValue($returnType, $format, $stamp, $default)

    {

        return $this->calendar->returnValue($returnType, $format, $stamp, $default);

    }

    /**

     * Defines Day object as first in a week

     * Only used by Calendar_Month_Weekdays::build()

     * @param boolean state

     * @return void

     * @access private

     */

    function setFirst ($state = true)

    {

        if ( method_exists($this->calendar,'setFirst') ) {

            $this->calendar->setFirst($state);

        }

    }

    /**

     * Defines Day object as last in a week

     * Used only following Calendar_Month_Weekdays::build()

     * @param boolean state

     * @return void

     * @access private

     */

    function setLast($state = true)

    {

        if ( method_exists($this->calendar,'setLast') ) {

            $this->calendar->setLast($state);

        }

    }

    /**

     * Returns true if Day object is first in a Week

     * Only relevant when Day is created by Calendar_Month_Weekdays::build()

     * @return boolean

     * @access public

     */

    function isFirst() {

        if ( method_exists($this->calendar,'isFirst') ) {

            return $this->calendar->isFirst();

        }

    }

    /**

     * Returns true if Day object is last in a Week

     * Only relevant when Day is created by Calendar_Month_Weekdays::build()

     * @return boolean

     * @access public

     */

    function isLast()

    {

        if ( method_exists($this->calendar,'isLast') ) {

            return $this->calendar->isLast();

        }

    }

    /**

     * Defines Day object as empty

     * Only used by Calendar_Month_Weekdays::build()

     * @param boolean state

     * @return void

     * @access private

     */

    function setEmpty ($state = true)

    {

        if ( method_exists($this->calendar,'setEmpty') ) {

            $this->calendar->setEmpty($state);

        }

    }

    /**

     * @return boolean

     * @access public

     */

    function isEmpty()

    {

        if ( method_exists($this->calendar,'isEmpty') ) {

            return $this->calendar->isEmpty();

        }

    }

    /**

     * Build the children

     * @param array containing Calendar objects to select (optional)

     * @return boolean

     * @access public

     * @abstract

     */

    function build($sDates = array())

    {

        $this->calendar->build($sDates);

    }

    /**

     * Iterator method for fetching child Calendar subclass objects

     * (e.g. a minute from an hour object). On reaching the end of

     * the collection, returns false and resets the collection for

     * further iteratations.

     * @return mixed either an object subclass of Calendar or false

     * @access public

     */

    function fetch()

    {

        return $this->calendar->fetch();

    }

    /**

     * Fetches all child from the current collection of children

     * @return array

     * @access public

     */

    function fetchAll()

    {

        return $this->calendar->fetchAll();

    }

    /**

     * Get the number Calendar subclass objects stored in the internal

     * collection.

     * @return int

     * @access public

     */

    function size()

    {

        return $this->calendar->size();

    }

    /**

     * Determine whether this date is valid, with the bounds determined by

     * the Calendar_Engine. The call is passed on to

     * Calendar_Validator::isValid

     * @return boolean

     * @access public

     */

    function isValid()

    {

        return $this->calendar->isValid();

    }

    /**

     * Returns an instance of Calendar_Validator

     * @return Calendar_Validator

     * @access public

     */

    function & getValidator()

    {

        $validator = $this->calendar->getValidator();

        return $validator;

    }

    /**

     * Returns a reference to the current Calendar_Engine being used. Useful

     * for Calendar_Table_Helper and Calendar_Validator

     * @return object implementing Calendar_Engine_Inteface

     * @access private

     */

    function & getEngine()

    {

        return $this->calendar->getEngine();

    }

    /**

     * Returns the value for the previous year

     * @param string return value format ['int' | 'timestamp' | 'object' | 'array']

     * @return int e.g. 2002 or timestamp

     * @access public

     */

    function prevYear($format = 'int')

    {

        return $this->calendar->prevYear($format);

    }

    /**

     * Returns the value for this year

     * @param string return value format ['int' | 'timestamp' | 'object' | 'array']

     * @return int e.g. 2003 or timestamp

     * @access public

     */

    function thisYear($format = 'int')

    {

        return $this->calendar->thisYear($format);

    }

    /**

     * Returns the value for next year

     * @param string return value format ['int' | 'timestamp' | 'object' | 'array']

     * @return int e.g. 2004 or timestamp

     * @access public

     */

    function nextYear($format = 'int')

    {

        return $this->calendar->nextYear($format);

    }

    /**

     * Returns the value for the previous month

     * @param string return value format ['int' | 'timestamp' | 'object' | 'array']

     * @return int e.g. 4 or Unix timestamp

     * @access public

      */

    function prevMonth($format = 'int')

    {

        return $this->calendar->prevMonth($format);

    }

    /**

     * Returns the value for this month

     * @param string return value format ['int' | 'timestamp' | 'object' | 'array']

     * @return int e.g. 5 or timestamp

     * @access public

     */

    function thisMonth($format = 'int')

    {

        return $this->calendar->thisMonth($format);

    }

    /**

     * Returns the value for next month

     * @param string return value format ['int' | 'timestamp' | 'object' | 'array']

     * @return int e.g. 6 or timestamp

     * @access public

     */

    function nextMonth($format = 'int')

    {

        return $this->calendar->nextMonth($format);

    }

    /**

     * Returns the value for the previous week

     * @param string return value format ['int' | 'timestamp' | 'object' | 'array']

     * @return int e.g. 4 or Unix timestamp

     * @access public

      */

    function prevWeek($format = 'n_in_month')

    {

        if ( method_exists($this->calendar,'prevWeek') ) {

            return $this->calendar->prevWeek($format);

        } else {

            require_once 'PEAR.php';

            PEAR::raiseError(

                'Cannot call prevWeek on Calendar object of type: '.

                get_class($this->calendar), 133, PEAR_ERROR_TRIGGER,

                E_USER_NOTICE, 'Calendar_Decorator::prevWeek()');

            return false;

        }

    }

    /**

     * Returns the value for this week

     * @param string return value format ['int' | 'timestamp' | 'object' | 'array']

     * @return int e.g. 5 or timestamp

     * @access public

     */

    function thisWeek($format = 'n_in_month')

    {

        if ( method_exists($this->calendar,'thisWeek') ) {

            return $this->calendar->thisWeek($format);

        } else {

            require_once 'PEAR.php';

            PEAR::raiseError(

                'Cannot call thisWeek on Calendar object of type: '.

                get_class($this->calendar), 133, PEAR_ERROR_TRIGGER,

                E_USER_NOTICE, 'Calendar_Decorator::thisWeek()');

            return false;

        }

    }

    /**

     * Returns the value for next week

     * @param string return value format ['int' | 'timestamp' | 'object' | 'array']

     * @return int e.g. 6 or timestamp

     * @access public

     */

    function nextWeek($format = 'n_in_month')

    {

        if ( method_exists($this->calendar,'nextWeek') ) {

            return $this->calendar->nextWeek($format);

        } else {

            require_once 'PEAR.php';

            PEAR::raiseError(

                'Cannot call thisWeek on Calendar object of type: '.

                get_class($this->calendar), 133, PEAR_ERROR_TRIGGER,

                E_USER_NOTICE, 'Calendar_Decorator::nextWeek()');

            return false;

        }

    }

    /**

     * Returns the value for the previous day

     * @param string return value format ['int' | 'timestamp' | 'object' | 'array']

     * @return int e.g. 10 or timestamp

     * @access public

     */

    function prevDay($format = 'int') {

        return $this->calendar->prevDay($format);

    }

    /**

     * Returns the value for this day

     * @param string return value format ['int' | 'timestamp' | 'object' | 'array']

     * @return int e.g. 11 or timestamp

     * @access public

     */

    function thisDay($format = 'int')

    {

        return $this->calendar->thisDay($format);

    }

    /**

     * Returns the value for the next day

     * @param string return value format ['int' | 'timestamp' | 'object' | 'array']

     * @return int e.g. 12 or timestamp

     * @access public

     */

    function nextDay($format = 'int')

    {

        return $this->calendar->nextDay($format);

    }

    /**

     * Returns the value for the previous hour

     * @param string return value format ['int' | 'timestamp' | 'object' | 'array']

     * @return int e.g. 13 or timestamp

     * @access public

     */

    function prevHour($format = 'int')

    {

        return $this->calendar->prevHour($format);

    }

    /**

     * Returns the value for this hour

     * @param string return value format ['int' | 'timestamp' | 'object' | 'array']

     * @return int e.g. 14 or timestamp

     * @access public

     */

    function thisHour($format = 'int')

    {

        return $this->calendar->thisHour($format);

    }

    /**

     * Returns the value for the next hour

     * @param string return value format ['int' | 'timestamp' | 'object' | 'array']

     * @return int e.g. 14 or timestamp

     * @access public

     */

    function nextHour($format = 'int')

    {

        return $this->calendar->nextHour($format);

    }

    /**

     * Returns the value for the previous minute

     * @param string return value format ['int' | 'timestamp' | 'object' | 'array']

     * @return int e.g. 23 or timestamp

     * @access public

     */

    function prevMinute($format = 'int')

    {

        return $this->calendar->prevMinute($format);

    }

    /**

     * Returns the value for this minute

     * @param string return value format ['int' | 'timestamp' | 'object' | 'array']

     * @return int e.g. 24 or timestamp

     * @access public

     */

    function thisMinute($format = 'int')

    {

        return $this->calendar->thisMinute($format);

    }

    /**

     * Returns the value for the next minute

     * @param string return value format ['int' | 'timestamp' | 'object' | 'array']

     * @return int e.g. 25 or timestamp

     * @access public

     */

   function nextMinute($format = 'int')

    {

        return $this->calendar->nextMinute($format);

    }

    /**

     * Returns the value for the previous second

     * @param string return value format ['int' | 'timestamp' | 'object' | 'array']

     * @return int e.g. 43 or timestamp

     * @access public

     */

    function prevSecond($format = 'int')

    {

        return $this->calendar->prevSecond($format);

    }

    /**

     * Returns the value for this second

     * @param string return value format ['int' | 'timestamp' | 'object' | 'array']

     * @return int e.g. 44 or timestamp

     * @access public

     */

    function thisSecond($format = 'int')

    {

        return $this->calendar->thisSecond($format);

    }

    /**

     * Returns the value for the next second

     * @param string return value format ['int' | 'timestamp' | 'object' | 'array']

     * @return int e.g. 45 or timestamp

     * @access public

     */

    function nextSecond($format = 'int')

    {

        return $this->calendar->nextSecond($format);

    }

}

?>