lib/plugin/Calendar.php

   1 <?php // -*-php-*-
   2 rcs_id('$Id: Calendar.php,v 1.2 2001-12-04 05:59:45 carstenklapp Exp $');
   3
   4 if (!defined('SECONDS_PER_DAY'))
   5     define('SECONDS_PER_DAY', 24 * 3600);
   6
   7 // FIXME: Still needs:
   8 //
   9 //   o Better way to navigate to distant months.
  10 //     (Maybe a form with selectors for month and year)?
  11 //
  12 //   o Docs.  Write a pgsrc/CalendarPlugin.
  13 //
  14 // It would be nice to have some way to get from the individual
  15 // date pages back to the calendar page.  (Subpage support might
  16 // make this easier.)
  17
  18 /**
  19  */
  20 class WikiPlugin_Calendar
  21 extends WikiPlugin
  22 {
  23     var $name = 'Calendar';
  24
  25     function getDefaultArguments() {
  26         // FIXME: how to exclude multiple pages?
  27         return array('prefix'           => '[pagename]:',
  28                      'date_format'      => '%Y-%m-%d',
  29                      'year'             => '',
  30                      'month'            => '',
  31                      'month_offset'     => 0,
  32
  33                      'month_format'     => '%B, %Y',
  34                      'wday_format'      => '%a',
  35                      'start_wday'       => '0');
  36     }
  37
  38     function __header($pagename, $time)  {
  39         $args = &$this->args;
  40
  41         $t = localtime($time - SECONDS_PER_DAY, 1);
  42         $prev_url = WikiURL($pagename, array('month' => $t['tm_mon'] + 1,
  43                                              'year' => $t['tm_year'] + 1900));
  44
  45         $t = localtime($time + 32 * SECONDS_PER_DAY, 1);
  46         $next_url = WikiURL($pagename, array('month' => $t['tm_mon'] + 1,
  47                                              'year' => $t['tm_year'] + 1900));
  48
  49         $prev = QElement('a', array('href' => $prev_url,
  50                                     'class' => 'cal-arrow',
  51                                     'title' => gettext("Previous Month")),
  52                          '<');
  53         $next = QElement('a', array('href' => $next_url,
  54                                     'class' => 'cal-arrow',
  55                                     'title' => gettext("Next Month")),
  56                          '>');
  57
  58
  59         $row = Element('td', array('align' => 'left'), $prev);
  60         $row .= Element('td', array('align' => 'center'),
  61                         QElement('b', array('class' => 'cal-header'),
  62                                  strftime($args['month_format'], $time)));
  63         $row .= Element('td', array('align' => 'right'), $next);
  64
  65         $row =  Element('table', array('width' => '100%'),
  66                         Element('tr', $row));
  67
  68         return Element('tr', Element('td', array('colspan' => 7,
  69                                                  'align' => 'center'),
  70                                      $row));
  71     }
  72
  73
  74     function __daynames($start_wday) {
  75         $time = mktime(12, 0, 0, 1, 1, 2001);
  76         $t = localtime($time, 1);
  77         $time += (7 + $start_wday - $t['tm_wday']) * SECONDS_PER_DAY;
  78
  79         $t = localtime($time, 1);
  80         assert($t['tm_wday'] == $start_wday);
  81
  82         $fs = $this->args['wday_format'];
  83         for ($i = 0; $i < 7; $i++) {
  84             $days[$i] = QElement('td', array('class' => 'cal-dayname',
  85                                              'align' => 'center'),
  86                                  strftime($fs, $time));
  87             $time += SECONDS_PER_DAY;
  88         }
  89         return Element('tr', join('', $days));
  90     }
  91
  92     function __date($dbi, $time) {
  93         $args = &$this->args;
  94
  95         $page_for_date = $args['prefix'] . strftime($args['date_format'], $time);
  96         $t = localtime($time, 1);
  97
  98         if ($dbi->isWikiPage($page_for_date)) {
  99             $date = Element('a', array('class' => 'cal-day',
 100                                        'href'  => WikiURL($page_for_date),
 101                                        'title' => $page_for_date),
 102                             QElement('b', $t['tm_mday']));
 103         }
 104         else {
 105             $date = QElement('a', array('class' => 'cal-hide',
 106                                         'href'  => WikiURL($page_for_date,
 107                                                            array('action' => 'edit')),
 108                                         'title' => "Edit $page_for_date"),
 109                              $t['tm_mday']);
 110         }
 111
 112         return  Element('td', array('align' => 'center'),
 113                         "&nbsp;${date}&nbsp;");
 114     }
 115
 116     function run($dbi, $argstr, $request) {
 117         $this->args = $this->getArgs($argstr, $request);
 118         $args = &$this->args;
 119
 120         $now = localtime(time(), 1);
 121         foreach ( array('month' => $now['tm_mon'] + 1,
 122                         'year' => $now['tm_year'] + 1900)
 123                   as $param => $dflt) {
 124             if (!($args[$param] = intval($args[$param])))
 125                 $args[$param] = $dflt;
 126
 127         }
 128
 129         $time = mktime(12, 0, 0,  // hh, mm, ss,
 130                        $args['month'] + $args['month_offset'], // month (1-12)
 131                        1, // mday (1-31)
 132                        $args['year']);
 133
 134         $rows[] = $this->__header($request->getArg('pagename'), $time);
 135         $rows[] = $this->__daynames($args['start_wday']);
 136
 137         $t = localtime($time, 1);
 138         $col = (7 + $t['tm_wday'] - $args['start_wday']) % 7;
 139         $row = $col > 0 ? Element('td', array('colspan' => $col)) : '';
 140         $done = false;
 141
 142         while (!$done) {
 143             $row .= $this->__date($dbi, $time);
 144
 145             if (++$col % 7 == 0) {
 146                 $rows[] = Element('tr', $row);
 147                 $col = 0;
 148                 $row = '';
 149             }
 150
 151             $time += SECONDS_PER_DAY;
 152             $t = localtime($time, 1);
 153             $done = $t['tm_mday'] == 1;
 154         }
 155
 156         if ($row) {
 157             $row .= Element('td', array('colspan' => (42 - $col) % 7));
 158             $rows[] = Element('tr', $row);
 159         }
 160
 161         return Element('table', array('cellspacing' => 0,
 162                                       'cellpadding' => 2,
 163                                       'class' => 'cal'),
 164                        "\n" . join("\n", $rows) . "\n");
 165     }
 166 };
 167
 168 // For emacs users
 169 // Local Variables:
 170 // mode: php
 171 // tab-width: 8
 172 // c-basic-offset: 4
 173 // c-hanging-comment-ender-p: nil
 174 // indent-tabs-mode: nil
 175 // End:
 176 ?>