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comparison plugins/calendar/lib/calendar_recurrence.php @ 3:f6fe4b6ae66a

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calendar plugin nearly as distributed
author Charlie Root
date Sat, 13 Jan 2018 08:56:12 -0500
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2:c828b0fd4a6e 3:f6fe4b6ae66a
1 <?php
2
3 require_once realpath(__DIR__ . '/../../libcalendaring/lib/libcalendaring_recurrence.php');
4
5 /**
6 * Recurrence computation class for the Calendar plugin
7 *
8 * Uitility class to compute instances of recurring events.
9 *
10 * @author Thomas Bruederli <bruederli@kolabsys.com>
11 *
12 * Copyright (C) 2012-2014, Kolab Systems AG <contact@kolabsys.com>
13 *
14 * This program is free software: you can redistribute it and/or modify
15 * it under the terms of the GNU Affero General Public License as
16 * published by the Free Software Foundation, either version 3 of the
17 * License, or (at your option) any later version.
18 *
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU Affero General Public License for more details.
23 *
24 * You should have received a copy of the GNU Affero General Public License
25 * along with this program. If not, see <http://www.gnu.org/licenses/>.
26 */
27 class calendar_recurrence extends libcalendaring_recurrence
28 {
29 private $event;
30 private $duration;
31
32 /**
33 * Default constructor
34 *
35 * @param object calendar The calendar plugin instance
36 * @param array The event object to operate on
37 */
38 function __construct($cal, $event)
39 {
40 parent::__construct($cal->lib);
41
42 $this->event = $event;
43
44 if (is_object($event['start']) && is_object($event['end']))
45 $this->duration = $event['start']->diff($event['end']);
46
47 $event['start']->_dateonly |= $event['allday'];
48 $this->init($event['recurrence'], $event['start']);
49 }
50
51 /**
52 * Alias of libcalendaring_recurrence::next()
53 *
54 * @return mixed DateTime object or False if recurrence ended
55 */
56 public function next_start()
57 {
58 return $this->next();
59 }
60
61 /**
62 * Get the next recurring instance of this event
63 *
64 * @return mixed Array with event properties or False if recurrence ended
65 */
66 public function next_instance()
67 {
68 if ($next_start = $this->next()) {
69 $next = $this->event;
70 $next['start'] = $next_start;
71
72 if ($this->duration) {
73 $next['end'] = clone $next_start;
74 $next['end']->add($this->duration);
75 }
76
77 $next['recurrence_date'] = clone $next_start;
78 $next['_instance'] = libcalendaring::recurrence_instance_identifier($next, $this->event['allday']);
79
80 unset($next['_formatobj']);
81
82 return $next;
83 }
84
85 return false;
86 }
87
88 }