362 lines
8.4 KiB
PHP
362 lines
8.4 KiB
PHP
<?php defined('SYSPATH') OR die('No direct access allowed.');
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/**
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* Calendar creation library.
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*
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* $Id: Calendar.php 3769 2008-12-15 00:48:56Z zombor $
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*
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* @package Calendar
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* @author Kohana Team
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* @copyright (c) 2007-2008 Kohana Team
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* @license http://kohanaphp.com/license.html
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*/
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class Calendar_Core extends Event_Subject {
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// Start the calendar on Sunday by default
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public static $start_monday = FALSE;
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// Month and year to use for calendaring
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protected $month;
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protected $year;
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// Week starts on Sunday
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protected $week_start = 0;
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// Observed data
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protected $observed_data;
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/**
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* Returns an array of the names of the days, using the current locale.
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*
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* @param integer left of day names
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* @return array
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*/
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public static function days($length = TRUE)
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{
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// strftime day format
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$format = ($length > 3) ? '%A' : '%a';
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// Days of the week
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$days = array('Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday');
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if (Calendar::$start_monday === TRUE)
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{
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// Push Sunday to the end of the days
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array_push($days, array_shift($days));
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}
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if (strpos(Kohana::config('locale.language.0'), 'en') !== 0)
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{
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// This is a bit awkward, but it works properly and is reliable
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foreach ($days as $i => $day)
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{
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// Convert the English names to i18n names
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$days[$i] = strftime($format, strtotime($day));
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}
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}
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if (is_int($length) OR ctype_digit($length))
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{
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foreach ($days as $i => $day)
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{
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// Shorten the days to the expected length
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$days[$i] = utf8::substr($day, 0, $length);
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}
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}
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return $days;
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}
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/**
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* Create a new Calendar instance. A month and year can be specified.
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* By default, the current month and year are used.
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*
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* @param integer month number
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* @param integer year number
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* @return object
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*/
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public static function factory($month = NULL, $year = NULL)
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{
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return new Calendar($month, $year);
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}
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/**
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* Create a new Calendar instance. A month and year can be specified.
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* By default, the current month and year are used.
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*
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* @param integer month number
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* @param integer year number
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* @return void
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*/
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public function __construct($month = NULL, $year = NULL)
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{
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empty($month) and $month = date('n'); // Current month
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empty($year) and $year = date('Y'); // Current year
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// Set the month and year
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$this->month = (int) $month;
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$this->year = (int) $year;
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if (Calendar::$start_monday === TRUE)
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{
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// Week starts on Monday
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$this->week_start = 1;
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}
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}
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/**
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* Allows fetching the current month and year.
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*
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* @param string key to get
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* @return mixed
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*/
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public function __get($key)
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{
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if ($key === 'month' OR $key === 'year')
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{
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return $this->$key;
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}
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}
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/**
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* Calendar_Event factory method.
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*
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* @param string unique name for the event
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* @return object Calendar_Event
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*/
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public function event($name = NULL)
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{
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return new Calendar_Event($this);
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}
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/**
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* Calendar_Event factory method.
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*
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* @chainable
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* @param string standard event type
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* @return object
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*/
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public function standard($name)
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{
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switch ($name)
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{
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case 'today':
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// Add an event for the current day
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$this->attach($this->event()->condition('timestamp', strtotime('today'))->add_class('today'));
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break;
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case 'prev-next':
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// Add an event for padding days
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$this->attach($this->event()->condition('current', FALSE)->add_class('prev-next'));
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break;
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case 'holidays':
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// Base event
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$event = $this->event()->condition('current', TRUE)->add_class('holiday');
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// Attach New Years
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$holiday = clone $event;
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$this->attach($holiday->condition('month', 1)->condition('day', 1));
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// Attach Valentine's Day
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$holiday = clone $event;
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$this->attach($holiday->condition('month', 2)->condition('day', 14));
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// Attach St. Patrick's Day
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$holiday = clone $event;
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$this->attach($holiday->condition('month', 3)->condition('day', 17));
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// Attach Easter
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$holiday = clone $event;
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$this->attach($holiday->condition('easter', TRUE));
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// Attach Memorial Day
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$holiday = clone $event;
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$this->attach($holiday->condition('month', 5)->condition('day_of_week', 1)->condition('last_occurrence', TRUE));
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// Attach Independance Day
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$holiday = clone $event;
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$this->attach($holiday->condition('month', 7)->condition('day', 4));
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// Attach Labor Day
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$holiday = clone $event;
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$this->attach($holiday->condition('month', 9)->condition('day_of_week', 1)->condition('occurrence', 1));
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// Attach Halloween
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$holiday = clone $event;
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$this->attach($holiday->condition('month', 10)->condition('day', 31));
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// Attach Thanksgiving
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$holiday = clone $event;
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$this->attach($holiday->condition('month', 11)->condition('day_of_week', 4)->condition('occurrence', 4));
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// Attach Christmas
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$holiday = clone $event;
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$this->attach($holiday->condition('month', 12)->condition('day', 25));
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break;
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case 'weekends':
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// Weekend events
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$this->attach($this->event()->condition('weekend', TRUE)->add_class('weekend'));
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break;
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}
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return $this;
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}
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/**
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* Returns an array for use with a view. The array contains an array for
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* each week. Each week contains 7 arrays, with a day number and status:
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* TRUE if the day is in the month, FALSE if it is padding.
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*
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* @return array
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*/
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public function weeks()
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{
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// First day of the month as a timestamp
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$first = mktime(1, 0, 0, $this->month, 1, $this->year);
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// Total number of days in this month
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$total = (int) date('t', $first);
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// Last day of the month as a timestamp
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$last = mktime(1, 0, 0, $this->month, $total, $this->year);
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// Make the month and week empty arrays
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$month = $week = array();
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// Number of days added. When this reaches 7, start a new week
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$days = 0;
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$week_number = 1;
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if (($w = (int) date('w', $first) - $this->week_start) < 0)
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{
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$w = 6;
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}
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if ($w > 0)
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{
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// Number of days in the previous month
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$n = (int) date('t', mktime(1, 0, 0, $this->month - 1, 1, $this->year));
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// i = number of day, t = number of days to pad
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for ($i = $n - $w + 1, $t = $w; $t > 0; $t--, $i++)
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{
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// Notify the listeners
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$this->notify(array($this->month - 1, $i, $this->year, $week_number, FALSE));
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// Add previous month padding days
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$week[] = array($i, FALSE, $this->observed_data);
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$days++;
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}
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}
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// i = number of day
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for ($i = 1; $i <= $total; $i++)
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{
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if ($days % 7 === 0)
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{
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// Start a new week
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$month[] = $week;
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$week = array();
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$week_number++;
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}
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// Notify the listeners
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$this->notify(array($this->month, $i, $this->year, $week_number, TRUE));
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// Add days to this month
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$week[] = array($i, TRUE, $this->observed_data);
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$days++;
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}
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if (($w = (int) date('w', $last) - $this->week_start) < 0)
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{
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$w = 6;
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}
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if ($w >= 0)
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{
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// i = number of day, t = number of days to pad
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for ($i = 1, $t = 6 - $w; $t > 0; $t--, $i++)
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{
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// Notify the listeners
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$this->notify(array($this->month + 1, $i, $this->year, $week_number, FALSE));
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// Add next month padding days
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$week[] = array($i, FALSE, $this->observed_data);
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}
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}
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if ( ! empty($week))
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{
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// Append the remaining days
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$month[] = $week;
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}
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return $month;
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}
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/**
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* Adds new data from an observer. All event data contains and array of CSS
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* classes and an array of output messages.
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*
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* @param array observer data.
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* @return void
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*/
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public function add_data(array $data)
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{
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// Add new classes
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$this->observed_data['classes'] += $data['classes'];
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if ( ! empty($data['output']))
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{
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// Only add output if it's not empty
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$this->observed_data['output'][] = $data['output'];
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}
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}
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/**
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* Resets the observed data and sends a notify to all attached events.
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*
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* @param array UNIX timestamp
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* @return void
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*/
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public function notify($data)
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{
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// Reset observed data
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$this->observed_data = array
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(
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'classes' => array(),
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'output' => array(),
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);
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// Send a notify
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parent::notify($data);
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}
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/**
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* Convert the calendar to HTML using the kohana_calendar view.
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*
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* @return string
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*/
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public function render()
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{
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$view = new View('kohana_calendar', array
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(
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'month' => $this->month,
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'year' => $this->year,
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'weeks' => $this->weeks(),
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));
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return $view->render();
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}
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/**
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* Magically convert this object to a string, the rendered calendar.
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*
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* @return string
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*/
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public function __toString()
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{
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return $this->render();
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}
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} // End Calendar
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