|
1
|
|
|
<?php defined('SYSPATH') or die('No direct access allowed.'); |
|
2
|
|
|
/** |
|
3
|
|
|
* Calendar event observer class. |
|
4
|
|
|
* |
|
5
|
|
|
* $Id: Calendar_Event.php 4129 2009-03-27 17:47:03Z zombor $ |
|
6
|
|
|
* |
|
7
|
|
|
* @package Calendar |
|
8
|
|
|
* @author Kohana Team |
|
9
|
|
|
* @copyright (c) 2007-2008 Kohana Team |
|
10
|
|
|
* @license http://kohanaphp.com/license.html |
|
11
|
|
|
*/ |
|
12
|
|
|
class Calendar_Event_Core extends Event_Observer |
|
13
|
|
|
{ |
|
14
|
|
|
|
|
15
|
|
|
// Boolean conditions |
|
16
|
|
|
protected $booleans = array( |
|
17
|
|
|
'current', |
|
18
|
|
|
'weekend', |
|
19
|
|
|
'first_day', |
|
20
|
|
|
'last_day', |
|
21
|
|
|
'last_occurrence', |
|
22
|
|
|
'easter', |
|
23
|
|
|
); |
|
24
|
|
|
|
|
25
|
|
|
// Rendering conditions |
|
26
|
|
|
protected $conditions = array(); |
|
27
|
|
|
|
|
28
|
|
|
// Cell classes |
|
29
|
|
|
protected $classes = array(); |
|
30
|
|
|
|
|
31
|
|
|
// Cell output |
|
32
|
|
|
protected $output = ''; |
|
33
|
|
|
|
|
34
|
|
|
/** |
|
35
|
|
|
* Adds a condition to the event. The condition can be one of the following: |
|
36
|
|
|
* |
|
37
|
|
|
* timestamp - UNIX timestamp |
|
38
|
|
|
* day - day number (1-31) |
|
39
|
|
|
* week - week number (1-5) |
|
40
|
|
|
* month - month number (1-12) |
|
41
|
|
|
* year - year number (4 digits) |
|
42
|
|
|
* day_of_week - day of week (1-7) |
|
43
|
|
|
* current - active month (boolean) (only show data for the month being rendered) |
|
44
|
|
|
* weekend - weekend day (boolean) |
|
45
|
|
|
* first_day - first day of month (boolean) |
|
46
|
|
|
* last_day - last day of month (boolean) |
|
47
|
|
|
* occurrence - occurrence of the week day (1-5) (use with "day_of_week") |
|
48
|
|
|
* last_occurrence - last occurrence of week day (boolean) (use with "day_of_week") |
|
49
|
|
|
* easter - Easter day (boolean) |
|
50
|
|
|
* callback - callback test (boolean) |
|
51
|
|
|
* |
|
52
|
|
|
* To unset a condition, call condition with a value of NULL. |
|
53
|
|
|
* |
|
54
|
|
|
* @chainable |
|
55
|
|
|
* @param string condition key |
|
56
|
|
|
* @param mixed condition value |
|
57
|
|
|
* @return Calendar_Event_Core |
|
58
|
|
|
*/ |
|
59
|
|
|
public function condition($key, $value) |
|
60
|
|
|
{ |
|
61
|
|
|
if ($value === null) { |
|
62
|
|
|
unset($this->conditions[$key]); |
|
63
|
|
|
} else { |
|
64
|
|
|
if ($key === 'callback') { |
|
65
|
|
|
// Do nothing |
|
66
|
|
|
} elseif (in_array($key, $this->booleans)) { |
|
67
|
|
|
// Make the value boolean |
|
68
|
|
|
$value = (bool) $value; |
|
69
|
|
|
} else { |
|
70
|
|
|
// Make the value an int |
|
71
|
|
|
$value = (int) $value; |
|
72
|
|
|
} |
|
73
|
|
|
|
|
74
|
|
|
$this->conditions[$key] = $value; |
|
75
|
|
|
} |
|
76
|
|
|
|
|
77
|
|
|
return $this; |
|
78
|
|
|
} |
|
79
|
|
|
|
|
80
|
|
|
/** |
|
81
|
|
|
* Add a CSS class for this event. This can be called multiple times. |
|
82
|
|
|
* |
|
83
|
|
|
* @chainable |
|
84
|
|
|
* @param string CSS class name |
|
85
|
|
|
* @return Calendar_Event_Core |
|
86
|
|
|
*/ |
|
87
|
|
|
public function add_class($class) |
|
88
|
|
|
{ |
|
89
|
|
|
$this->classes[$class] = $class; |
|
90
|
|
|
|
|
91
|
|
|
return $this; |
|
92
|
|
|
} |
|
93
|
|
|
|
|
94
|
|
|
/** |
|
95
|
|
|
* Remove a CSS class for this event. This can be called multiple times. |
|
96
|
|
|
* |
|
97
|
|
|
* @chainable |
|
98
|
|
|
* @param string CSS class name |
|
99
|
|
|
* @return Calendar_Event_Core |
|
100
|
|
|
*/ |
|
101
|
|
|
public function remove_class($class) |
|
102
|
|
|
{ |
|
103
|
|
|
unset($this->classes[$class]); |
|
104
|
|
|
|
|
105
|
|
|
return $this; |
|
106
|
|
|
} |
|
107
|
|
|
|
|
108
|
|
|
/** |
|
109
|
|
|
* Set HTML output for this event. |
|
110
|
|
|
* |
|
111
|
|
|
* @chainable |
|
112
|
|
|
* @param string HTML output |
|
113
|
|
|
* @return Calendar_Event_Core |
|
114
|
|
|
*/ |
|
115
|
|
|
public function output($str) |
|
116
|
|
|
{ |
|
117
|
|
|
$this->output = $str; |
|
118
|
|
|
|
|
119
|
|
|
return $this; |
|
120
|
|
|
} |
|
121
|
|
|
|
|
122
|
|
|
/** |
|
123
|
|
|
* Add a CSS class for this event. This can be called multiple times. |
|
124
|
|
|
* |
|
125
|
|
|
* @chainable |
|
126
|
|
|
* @param string CSS class name |
|
127
|
|
|
* @return false|null |
|
128
|
|
|
*/ |
|
129
|
|
|
public function notify($data) |
|
130
|
|
|
{ |
|
131
|
|
|
// Split the date and current status |
|
132
|
|
|
list($month, $day, $year, $week, $current) = $data; |
|
133
|
|
|
|
|
134
|
|
|
// Get a timestamp for the day |
|
135
|
|
|
$timestamp = mktime(0, 0, 0, $month, $day, $year); |
|
136
|
|
|
|
|
137
|
|
|
// Date conditionals |
|
138
|
|
|
$condition = array( |
|
139
|
|
|
'timestamp' => (int) $timestamp, |
|
140
|
|
|
'day' => (int) date('j', $timestamp), |
|
141
|
|
|
'week' => (int) $week, |
|
142
|
|
|
'month' => (int) date('n', $timestamp), |
|
143
|
|
|
'year' => (int) date('Y', $timestamp), |
|
144
|
|
|
'day_of_week' => (int) date('w', $timestamp), |
|
145
|
|
|
'current' => (bool) $current, |
|
146
|
|
|
); |
|
147
|
|
|
|
|
148
|
|
|
// Tested conditions |
|
149
|
|
|
$tested = array(); |
|
150
|
|
|
|
|
151
|
|
|
foreach ($condition as $key => $value) { |
|
152
|
|
|
// Timestamps need to be handled carefully |
|
153
|
|
|
if ($key === 'timestamp' and isset($this->conditions['timestamp'])) { |
|
154
|
|
|
// This adds 23 hours, 59 minutes and 59 seconds to today's timestamp, as 24 hours |
|
155
|
|
|
// is classed as a new day |
|
156
|
|
|
$next_day = $timestamp + 86399; |
|
157
|
|
|
|
|
158
|
|
|
if ($this->conditions['timestamp'] < $timestamp or $this->conditions['timestamp'] > $next_day) { |
|
159
|
|
|
return false; |
|
160
|
|
|
} |
|
161
|
|
|
} |
|
162
|
|
|
// Test basic conditions first |
|
163
|
|
|
elseif (isset($this->conditions[$key]) and $this->conditions[$key] !== $value) { |
|
164
|
|
|
return false; |
|
165
|
|
|
} |
|
166
|
|
|
|
|
167
|
|
|
// Condition has been tested |
|
168
|
|
|
$tested[$key] = true; |
|
169
|
|
|
} |
|
170
|
|
|
|
|
171
|
|
|
if (isset($this->conditions['weekend'])) { |
|
172
|
|
|
// Weekday vs Weekend |
|
173
|
|
|
$condition['weekend'] = ($condition['day_of_week'] === 0 or $condition['day_of_week'] === 6); |
|
174
|
|
|
} |
|
175
|
|
|
|
|
176
|
|
|
if (isset($this->conditions['first_day'])) { |
|
177
|
|
|
// First day of month |
|
178
|
|
|
$condition['first_day'] = ($condition['day'] === 1); |
|
179
|
|
|
} |
|
180
|
|
|
|
|
181
|
|
|
if (isset($this->conditions['last_day'])) { |
|
182
|
|
|
// Last day of month |
|
183
|
|
|
$condition['last_day'] = ($condition['day'] === (int) date('t', $timestamp)); |
|
184
|
|
|
} |
|
185
|
|
|
|
|
186
|
|
|
if (isset($this->conditions['occurrence'])) { |
|
187
|
|
|
// Get the occurance of the current day |
|
188
|
|
|
$condition['occurrence'] = $this->day_occurrence($timestamp); |
|
189
|
|
|
} |
|
190
|
|
|
|
|
191
|
|
|
if (isset($this->conditions['last_occurrence'])) { |
|
192
|
|
|
// Test if the next occurance of this date is next month |
|
193
|
|
|
$condition['last_occurrence'] = ((int) date('n', $timestamp + 604800) !== $condition['month']); |
|
194
|
|
|
} |
|
195
|
|
|
|
|
196
|
|
|
if (isset($this->conditions['easter'])) { |
|
197
|
|
|
if ($condition['month'] === 3 or $condition['month'] === 4) { |
|
198
|
|
|
// This algorithm is from Practical Astronomy With Your Calculator, 2nd Edition by Peter |
|
199
|
|
|
// Duffett-Smith. It was originally from Butcher's Ecclesiastical Calendar, published in |
|
200
|
|
|
// 1876. This algorithm has also been published in the 1922 book General Astronomy by |
|
201
|
|
|
// Spencer Jones; in The Journal of the British Astronomical Association (Vol.88, page |
|
202
|
|
|
// 91, December 1977); and in Astronomical Algorithms (1991) by Jean Meeus. |
|
203
|
|
|
|
|
204
|
|
|
$a = $condition['year'] % 19; |
|
|
|
|
|
|
205
|
|
|
$b = (int) ($condition['year'] / 100); |
|
|
|
|
|
|
206
|
|
|
$c = $condition['year'] % 100; |
|
|
|
|
|
|
207
|
|
|
$d = (int) ($b / 4); |
|
|
|
|
|
|
208
|
|
|
$e = $b % 4; |
|
|
|
|
|
|
209
|
|
|
$f = (int) (($b + 8) / 25); |
|
|
|
|
|
|
210
|
|
|
$g = (int) (($b - $f + 1) / 3); |
|
|
|
|
|
|
211
|
|
|
$h = (19 * $a + $b - $d - $g + 15) % 30; |
|
|
|
|
|
|
212
|
|
|
$i = (int) ($c / 4); |
|
213
|
|
|
$k = $c % 4; |
|
|
|
|
|
|
214
|
|
|
$l = (32 + 2 * $e + 2 * $i - $h - $k) % 7; |
|
|
|
|
|
|
215
|
|
|
$m = (int) (($a + 11 * $h + 22 * $l) / 451); |
|
|
|
|
|
|
216
|
|
|
$p = ($h + $l - 7 * $m + 114) % 31; |
|
|
|
|
|
|
217
|
|
|
|
|
218
|
|
|
$month = (int) (($h + $l - 7 * $m + 114) / 31); |
|
219
|
|
|
$day = $p + 1; |
|
220
|
|
|
|
|
221
|
|
|
$condition['easter'] = ($condition['month'] === $month and $condition['day'] === $day); |
|
222
|
|
|
} else { |
|
223
|
|
|
// Easter can only happen in March or April |
|
224
|
|
|
$condition['easter'] = false; |
|
225
|
|
|
} |
|
226
|
|
|
} |
|
227
|
|
|
|
|
228
|
|
|
if (isset($this->conditions['callback'])) { |
|
229
|
|
|
// Use a callback to determine validity |
|
230
|
|
|
$condition['callback'] = call_user_func($this->conditions['callback'], $condition, $this); |
|
231
|
|
|
} |
|
232
|
|
|
|
|
233
|
|
|
$conditions = array_diff_key($this->conditions, $tested); |
|
234
|
|
|
|
|
235
|
|
|
foreach ($conditions as $key => $value) { |
|
236
|
|
|
if ($key === 'callback') { |
|
237
|
|
|
// Callbacks are tested on a TRUE/FALSE basis |
|
238
|
|
|
$value = true; |
|
239
|
|
|
} |
|
240
|
|
|
|
|
241
|
|
|
// Test advanced conditions |
|
242
|
|
|
if ($condition[$key] !== $value) { |
|
243
|
|
|
return false; |
|
244
|
|
|
} |
|
245
|
|
|
} |
|
246
|
|
|
|
|
247
|
|
|
$this->caller->add_data(array( |
|
248
|
|
|
'classes' => $this->classes, |
|
249
|
|
|
'output' => $this->output, |
|
250
|
|
|
)); |
|
251
|
|
|
} |
|
252
|
|
|
|
|
253
|
|
|
/** |
|
254
|
|
|
* Find the week day occurrence for a specific timestamp. The occurrence is |
|
255
|
|
|
* relative to the current month. For example, the second Saturday of any |
|
256
|
|
|
* given month will return "2" as the occurrence. This is used in combination |
|
257
|
|
|
* with the "occurrence" condition. |
|
258
|
|
|
* |
|
259
|
|
|
* @param integer UNIX timestamp |
|
260
|
|
|
* @param integer $timestamp |
|
261
|
|
|
* @return integer |
|
|
|
|
|
|
262
|
|
|
*/ |
|
263
|
|
|
protected function day_occurrence($timestamp) |
|
264
|
|
|
{ |
|
265
|
|
|
// Get the current month for the timestamp |
|
266
|
|
|
$month = date('m', $timestamp); |
|
267
|
|
|
|
|
268
|
|
|
// Default occurrence is one |
|
269
|
|
|
$occurrence = 1; |
|
270
|
|
|
|
|
271
|
|
|
// Reduce the timestamp by one week for each loop. This has the added |
|
272
|
|
|
// benefit of preventing an infinite loop. |
|
273
|
|
|
while ($timestamp -= 604800) { |
|
274
|
|
|
if (date('m', $timestamp) !== $month) { |
|
275
|
|
|
// Once the timestamp has gone into the previous month, the |
|
276
|
|
|
// proper occurrence has been found. |
|
277
|
|
|
return $occurrence; |
|
278
|
|
|
} |
|
279
|
|
|
|
|
280
|
|
|
// Increment the occurrence |
|
281
|
|
|
$occurrence++; |
|
282
|
|
|
} |
|
283
|
|
|
} |
|
284
|
|
|
} // End Calendar Event |
|
285
|
|
|
|
Short variable names may make your code harder to understand. Variable names should be self-descriptive. This check looks for variable names who are shorter than a configured minimum.