1 <?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
5 * An open source application development framework for PHP 4.3.2 or newer
8 * @author ExpressionEngine Dev Team
9 * @copyright Copyright (c) 2008 - 2009, EllisLab, Inc.
10 * @license http://codeigniter.com/user_guide/license.html
11 * @link http://codeigniter.com
16 // ------------------------------------------------------------------------
19 * CodeIgniter Calendar Class
21 * This class enables the creation of calendars
23 * @package CodeIgniter
24 * @subpackage Libraries
26 * @author ExpressionEngine Dev Team
27 * @link http://codeigniter.com/user_guide/libraries/calendar.html
35 var $start_day = 'sunday';
36 var $month_type = 'long';
37 var $day_type = 'abr';
38 var $show_next_prev = FALSE;
39 var $next_prev_url = '';
44 * Loads the calendar language file and sets the default time reference
48 function CI_Calendar($config = array())
50 $this->CI =& get_instance();
52 if ( ! in_array('calendar_lang'.EXT, $this->CI->lang->is_loaded, TRUE))
54 $this->CI->lang->load('calendar');
57 $this->local_time = time();
59 if (count($config) > 0)
61 $this->initialize($config);
64 log_message('debug', "Calendar Class Initialized");
67 // --------------------------------------------------------------------
70 * Initialize the user preferences
72 * Accepts an associative array as input, containing display preferences
75 * @param array config preferences
78 function initialize($config = array())
80 foreach ($config as $key => $val)
82 if (isset($this->$key))
89 // --------------------------------------------------------------------
92 * Generate the calendar
95 * @param integer the year
96 * @param integer the month
97 * @param array the data to be shown in the calendar cells
100 function generate($year = '', $month = '', $data = array())
102 // Set and validate the supplied month/year
104 $year = date("Y", $this->local_time);
107 $month = date("m", $this->local_time);
109 if (strlen($year) == 1)
112 if (strlen($year) == 2)
115 if (strlen($month) == 1)
118 $adjusted_date = $this->adjust_date($month, $year);
120 $month = $adjusted_date['month'];
121 $year = $adjusted_date['year'];
123 // Determine the total days in the month
124 $total_days = $this->get_total_days($month, $year);
126 // Set the starting day of the week
127 $start_days = array('sunday' => 0, 'monday' => 1, 'tuesday' => 2, 'wednesday' => 3, 'thursday' => 4, 'friday' => 5, 'saturday' => 6);
128 $start_day = ( ! isset($start_days[$this->start_day])) ? 0 : $start_days[$this->start_day];
130 // Set the starting day number
131 $local_date = mktime(12, 0, 0, $month, 1, $year);
132 $date = getdate($local_date);
133 $day = $start_day + 1 - $date["wday"];
140 // Set the current month/year/day
141 // We use this to determine the "today" date
142 $cur_year = date("Y", $this->local_time);
143 $cur_month = date("m", $this->local_time);
144 $cur_day = date("j", $this->local_time);
146 $is_current_month = ($cur_year == $year AND $cur_month == $month) ? TRUE : FALSE;
148 // Generate the template data array
149 $this->parse_template();
151 // Begin building the calendar output
152 $out = $this->temp['table_open'];
156 $out .= $this->temp['heading_row_start'];
159 // "previous" month link
160 if ($this->show_next_prev == TRUE)
162 // Add a trailing slash to the URL if needed
163 $this->next_prev_url = preg_replace("/(.+?)\/*$/", "\\1/", $this->next_prev_url);
165 $adjusted_date = $this->adjust_date($month - 1, $year);
166 $out .= str_replace('{previous_url}', $this->next_prev_url.$adjusted_date['year'].'/'.$adjusted_date['month'], $this->temp['heading_previous_cell']);
170 // Heading containing the month/year
171 $colspan = ($this->show_next_prev == TRUE) ? 5 : 7;
173 $this->temp['heading_title_cell'] = str_replace('{colspan}', $colspan, $this->temp['heading_title_cell']);
174 $this->temp['heading_title_cell'] = str_replace('{heading}', $this->get_month_name($month)." ".$year, $this->temp['heading_title_cell']);
176 $out .= $this->temp['heading_title_cell'];
180 if ($this->show_next_prev == TRUE)
182 $adjusted_date = $this->adjust_date($month + 1, $year);
183 $out .= str_replace('{next_url}', $this->next_prev_url.$adjusted_date['year'].'/'.$adjusted_date['month'], $this->temp['heading_next_cell']);
187 $out .= $this->temp['heading_row_end'];
190 // Write the cells containing the days of the week
192 $out .= $this->temp['week_row_start'];
195 $day_names = $this->get_day_names();
197 for ($i = 0; $i < 7; $i ++)
199 $out .= str_replace('{week_day}', $day_names[($start_day + $i) %7], $this->temp['week_day_cell']);
203 $out .= $this->temp['week_row_end'];
206 // Build the main body of the calendar
207 while ($day <= $total_days)
210 $out .= $this->temp['cal_row_start'];
213 for ($i = 0; $i < 7; $i++)
215 $out .= ($is_current_month == TRUE AND $day == $cur_day) ? $this->temp['cal_cell_start_today'] : $this->temp['cal_cell_start'];
217 if ($day > 0 AND $day <= $total_days)
219 if (isset($data[$day]))
221 // Cells with content
222 $temp = ($is_current_month == TRUE AND $day == $cur_day) ? $this->temp['cal_cell_content_today'] : $this->temp['cal_cell_content'];
223 $out .= str_replace('{day}', $day, str_replace('{content}', $data[$day], $temp));
227 // Cells with no content
228 $temp = ($is_current_month == TRUE AND $day == $cur_day) ? $this->temp['cal_cell_no_content_today'] : $this->temp['cal_cell_no_content'];
229 $out .= str_replace('{day}', $day, $temp);
235 $out .= $this->temp['cal_cell_blank'];
238 $out .= ($is_current_month == TRUE AND $day == $cur_day) ? $this->temp['cal_cell_end_today'] : $this->temp['cal_cell_end'];
243 $out .= $this->temp['cal_row_end'];
248 $out .= $this->temp['table_close'];
253 // --------------------------------------------------------------------
258 * Generates a textual month name based on the numeric
262 * @param integer the month
265 function get_month_name($month)
267 if ($this->month_type == 'short')
269 $month_names = array('01' => 'cal_jan', '02' => 'cal_feb', '03' => 'cal_mar', '04' => 'cal_apr', '05' => 'cal_may', '06' => 'cal_jun', '07' => 'cal_jul', '08' => 'cal_aug', '09' => 'cal_sep', '10' => 'cal_oct', '11' => 'cal_nov', '12' => 'cal_dec');
273 $month_names = array('01' => 'cal_january', '02' => 'cal_february', '03' => 'cal_march', '04' => 'cal_april', '05' => 'cal_mayl', '06' => 'cal_june', '07' => 'cal_july', '08' => 'cal_august', '09' => 'cal_september', '10' => 'cal_october', '11' => 'cal_november', '12' => 'cal_december');
276 $month = $month_names[$month];
278 if ($this->CI->lang->line($month) === FALSE)
280 return ucfirst(str_replace('cal_', '', $month));
283 return $this->CI->lang->line($month);
286 // --------------------------------------------------------------------
291 * Returns an array of day names (Sunday, Monday, etc.) based
292 * on the type. Options: long, short, abrev
298 function get_day_names($day_type = '')
301 $this->day_type = $day_type;
303 if ($this->day_type == 'long')
305 $day_names = array('sunday', 'monday', 'tuesday', 'wednesday', 'thursday', 'friday', 'saturday');
307 elseif ($this->day_type == 'short')
309 $day_names = array('sun', 'mon', 'tue', 'wed', 'thu', 'fri', 'sat');
313 $day_names = array('su', 'mo', 'tu', 'we', 'th', 'fr', 'sa');
317 foreach ($day_names as $val)
319 $days[] = ($this->CI->lang->line('cal_'.$val) === FALSE) ? ucfirst($val) : $this->CI->lang->line('cal_'.$val);
325 // --------------------------------------------------------------------
330 * This function makes sure that we have a valid month/year.
331 * For example, if you submit 13 as the month, the year will
332 * increment and the month will become January.
335 * @param integer the month
336 * @param integer the year
339 function adjust_date($month, $year)
343 $date['month'] = $month;
344 $date['year'] = $year;
346 while ($date['month'] > 12)
348 $date['month'] -= 12;
352 while ($date['month'] <= 0)
354 $date['month'] += 12;
358 if (strlen($date['month']) == 1)
360 $date['month'] = '0'.$date['month'];
366 // --------------------------------------------------------------------
369 * Total days in a given month
372 * @param integer the month
373 * @param integer the year
376 function get_total_days($month, $year)
378 $days_in_month = array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
380 if ($month < 1 OR $month > 12)
385 // Is the year a leap year?
388 if ($year % 400 == 0 OR ($year % 4 == 0 AND $year % 100 != 0))
394 return $days_in_month[$month - 1];
397 // --------------------------------------------------------------------
400 * Set Default Template Data
402 * This is used in the event that the user has not created their own template
407 function default_template()
410 'table_open' => '<table border="0" cellpadding="4" cellspacing="0">',
411 'heading_row_start' => '<tr>',
412 'heading_previous_cell' => '<th><a href="{previous_url}"><<</a></th>',
413 'heading_title_cell' => '<th colspan="{colspan}">{heading}</th>',
414 'heading_next_cell' => '<th><a href="{next_url}">>></a></th>',
415 'heading_row_end' => '</tr>',
416 'week_row_start' => '<tr>',
417 'week_day_cell' => '<td>{week_day}</td>',
418 'week_row_end' => '</tr>',
419 'cal_row_start' => '<tr>',
420 'cal_cell_start' => '<td>',
421 'cal_cell_start_today' => '<td>',
422 'cal_cell_content' => '<a href="{content}">{day}</a>',
423 'cal_cell_content_today' => '<a href="{content}"><strong>{day}</strong></a>',
424 'cal_cell_no_content' => '{day}',
425 'cal_cell_no_content_today' => '<strong>{day}</strong>',
426 'cal_cell_blank' => ' ',
427 'cal_cell_end' => '</td>',
428 'cal_cell_end_today' => '</td>',
429 'cal_row_end' => '</tr>',
430 'table_close' => '</table>'
434 // --------------------------------------------------------------------
439 * Harvests the data within the template {pseudo-variables}
440 * used to display the calendar
445 function parse_template()
447 $this->temp = $this->default_template();
449 if ($this->template == '')
454 $today = array('cal_cell_start_today', 'cal_cell_content_today', 'cal_cell_no_content_today', 'cal_cell_end_today');
456 foreach (array('table_open', 'table_close', 'heading_row_start', 'heading_previous_cell', 'heading_title_cell', 'heading_next_cell', 'heading_row_end', 'week_row_start', 'week_day_cell', 'week_row_end', 'cal_row_start', 'cal_cell_start', 'cal_cell_content', 'cal_cell_no_content', 'cal_cell_blank', 'cal_cell_end', 'cal_row_end', 'cal_cell_start_today', 'cal_cell_content_today', 'cal_cell_no_content_today', 'cal_cell_end_today') as $val)
458 if (preg_match("/\{".$val."\}(.*?)\{\/".$val."\}/si", $this->template, $match))
460 $this->temp[$val] = $match['1'];
464 if (in_array($val, $today, TRUE))
466 $this->temp[$val] = $this->temp[str_replace('_today', '', $val)];
474 // END CI_Calendar class
476 /* End of file Calendar.php */
477 /* Location: ./system/libraries/Calendar.php */