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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>                      |

// |          Lorenzo Alberton <l dot alberton at quipo dot it>           |

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

//

// $Id: Factory.php,v 1.3 2005/10/22 10:08:47 quipo Exp $

//

/**

 * @package Calendar

 * @version $Id: Factory.php,v 1.3 2005/10/22 10:08:47 quipo Exp $

 */

/**

 * Allows Calendar include path to be redefined

 * @ignore

 */

if (!defined('CALENDAR_ROOT')) {

    define('CALENDAR_ROOT', 'Calendar'.DIRECTORY_SEPARATOR);

}

/**

 * Load Calendar base class

 */

require_once CALENDAR_ROOT.'Calendar.php';

/**

 * Contains a factory method to return a Singleton instance of a class

 * implementing the Calendar_Engine_Interface.<br>

 * For Month objects, to control type of month returned, use CALENDAR_MONTH_STATE

 * constact e.g.;

 * <code>

 * require_once 'Calendar/Factory.php';

 * define ('CALENDAR_MONTH_STATE',CALENDAR_USE_MONTH_WEEKDAYS); // Use Calendar_Month_Weekdays

 * // define ('CALENDAR_MONTH_STATE',CALENDAR_USE_MONTH_WEEKS); // Use Calendar_Month_Weeks

 * // define ('CALENDAR_MONTH_STATE',CALENDAR_USE_MONTH); // Use Calendar_Month

 * </code>

 * It defaults to building Calendar_Month objects.<br>

 * Use the constract CALENDAR_FIRST_DAY_OF_WEEK to control the first day of the week

 * for Month or Week objects (e.g. 0 = Sunday, 6 = Saturday)

 * @package Calendar

 * @access protected

 */

class Calendar_Factory

{

    /**

     * Creates a calendar object given the type and units

     * @param string class of calendar object to create

     * @param int year

     * @param int month

     * @param int day

     * @param int hour

     * @param int minute

     * @param int second

     * @return object subclass of Calendar

     * @access public

     * @static

     */

    function create($type, $y = 2000, $m = 1, $d = 1, $h = 0, $i = 0, $s = 0)

    {

        $firstDay = defined('CALENDAR_FIRST_DAY_OF_WEEK') ? CALENDAR_FIRST_DAY_OF_WEEK : 1;

        switch ($type) {

            case 'Day':

                require_once CALENDAR_ROOT.'Day.php';

                return new Calendar_Day($y,$m,$d);

            case 'Month':

                // Set default state for which month type to build

                if (!defined('CALENDAR_MONTH_STATE')) {

                    define('CALENDAR_MONTH_STATE', CALENDAR_USE_MONTH);

                }

                switch (CALENDAR_MONTH_STATE) {

                    case CALENDAR_USE_MONTH_WEEKDAYS:

                        require_once CALENDAR_ROOT.'Month/Weekdays.php';

                        $class = 'Calendar_Month_Weekdays';

                        break;

                    case CALENDAR_USE_MONTH_WEEKS:

                        require_once CALENDAR_ROOT.'Month/Weeks.php';

                        $class = 'Calendar_Month_Weeks';

                        break;

                    case CALENDAR_USE_MONTH:

                    default:

                        require_once CALENDAR_ROOT.'Month.php';

                        $class = 'Calendar_Month';

                        break;

                }

                return new $class($y, $m, $firstDay);

            case 'Week':

                require_once CALENDAR_ROOT.'Week.php';

                return new Calendar_Week($y, $m, $d, $firstDay);

            case 'Hour':

                require_once CALENDAR_ROOT.'Hour.php';

                return new Calendar_Hour($y, $m, $d, $h);

            case 'Minute':

                require_once CALENDAR_ROOT.'Minute.php';

                return new Calendar_Minute($y, $m, $d, $h, $i);

            case 'Second':

                require_once CALENDAR_ROOT.'Second.php';

                return new Calendar_Second($y,$m,$d,$h,$i,$s);

            case 'Year':

                require_once CALENDAR_ROOT.'Year.php';

                return new Calendar_Year($y);

            default:

                require_once 'PEAR.php';

                PEAR::raiseError(

                    'Calendar_Factory::create() unrecognised type: '.$type, null, PEAR_ERROR_TRIGGER,

                    E_USER_NOTICE, 'Calendar_Factory::create()');

                return false;

        }

    }

    /**

     * Creates an instance of a calendar object, given a type and timestamp

     * @param string type of object to create

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

     * @return object subclass of Calendar

     * @access public

     * @static

     */

    function & createByTimestamp($type, $stamp)

    {

        $cE = & Calendar_Engine_Factory::getEngine();

        $y = $cE->stampToYear($stamp);

        $m = $cE->stampToMonth($stamp);

        $d = $cE->stampToDay($stamp);

        $h = $cE->stampToHour($stamp);

        $i = $cE->stampToMinute($stamp);

        $s = $cE->stampToSecond($stamp);

        $cal = Calendar_Factory::create($type, $y, $m, $d, $h, $i, $s);

        return $cal;

    }

}

?>