lib/plugin/Calendar.php

   1 <?php // -*-php-*-
   2 rcs_id('$Id: Calendar.php,v 1.8 2002-01-11 20:57:08 dairiki Exp $');
   3
   4 if (!defined('SECONDS_PER_DAY'))
   5     define('SECONDS_PER_DAY', 24 * 3600);
   6
   7 // FIXME: Still needs:
   8 //
   9 //   o Better way to navigate to distant months.
  10 //     (Maybe a form with selectors for month and year)?
  11 //
  12 //   o Docs.  Write a pgsrc/CalendarPlugin.
  13 //
  14 // It would be nice to have some way to get from the individual date
  15 // pages back to the calendar page. (Subpage support might make this
  16 // easier.)
  17
  18 /**
  19  */
  20 class WikiPlugin_Calendar
  21 extends WikiPlugin
  22 {
  23     function getName () {
  24         return _("Calendar");
  25     }
  26
  27     function getDescription () {
  28         return _("Calendar");
  29     }
  30
  31     function getDefaultArguments() {
  32         return array('prefix'           => '[pagename].',
  33                      'date_format'      => '%Y-%m-%d',
  34                      'year'             => '',
  35                      'month'            => '',
  36                      'month_offset'     => 0,
  37
  38                      'month_format'     => '%B, %Y',
  39                      'wday_format'      => '%a',
  40                      'start_wday'       => '0');
  41     }
  42
  43     function __header($pagename, $time) {
  44         $args = &$this->args;
  45
  46         $t = localtime($time - SECONDS_PER_DAY, 1);
  47         $prev_url = WikiURL($pagename, array('month' => $t['tm_mon'] + 1,
  48                                              'year'  => $t['tm_year'] + 1900));
  49
  50         $t = localtime($time + 32 * SECONDS_PER_DAY, 1);
  51         $next_url = WikiURL($pagename, array('month' => $t['tm_mon'] + 1,
  52                                              'year'  => $t['tm_year'] + 1900));
  53
  54         $prev = QElement('a', array('href'  => $prev_url,
  55                                     'class' => 'cal-arrow',
  56                                     'title' => gettext("Previous Month")),
  57                          '<');
  58         $next = QElement('a', array('href'  => $next_url,
  59                                     'class' => 'cal-arrow',
  60                                     'title' => gettext("Next Month")),
  61                          '>');
  62
  63
  64         $row =  Element('td', array('align' => 'left'), $prev);
  65         $row .= Element('td', array('align' => 'center'),
  66                         QElement('strong', array('class' => 'cal-header'),
  67                                  strftime($args['month_format'], $time)));
  68         $row .= Element('td', array('align' => 'right'), $next);
  69
  70         $row =  Element('table', array('width' => '100%'),
  71                         Element('tr', $row));
  72
  73         return Element('tr', Element('td', array('colspan' => 7,
  74                                                  'align'   => 'center'),
  75                                      $row));
  76     }
  77
  78
  79     function __daynames($start_wday) {
  80         $time  = mktime(12, 0, 0, 1, 1, 2001);
  81         $t     = localtime($time, 1);
  82         $time += (7 + $start_wday - $t['tm_wday']) * SECONDS_PER_DAY;
  83
  84         $t = localtime($time, 1);
  85         assert($t['tm_wday'] == $start_wday);
  86
  87         $fs = $this->args['wday_format'];
  88         for ($i = 0; $i < 7; $i++) {
  89             $days[$i] = QElement('td', array('class' => 'cal-dayname',
  90                                              'align' => 'center'),
  91                                  strftime($fs, $time));
  92             $time += SECONDS_PER_DAY;
  93         }
  94         return Element('tr', join('', $days));
  95     }
  96
  97     function __date($dbi, $time) {
  98         $args = &$this->args;
  99
 100         $page_for_date = $args['prefix'] . strftime($args['date_format'],
 101                                                     $time);
 102         $t = localtime($time, 1);
 103
 104         if ($dbi->isWikiPage($page_for_date)) {
 105             $date = Element('a', array('class' => 'cal-day',
 106                                        'href'  => WikiURL($page_for_date),
 107                                        'title' => $page_for_date),
 108                             QElement('strong', $t['tm_mday']));
 109         }
 110         else {
 111             $date = QElement('a',
 112                              array('class' => 'cal-hide',
 113                                    'href'  => WikiURL($page_for_date,
 114                                                       array('action' => 'edit')),
 115                                    'title' => sprintf(_("Edit %s"), $page_for_date)),
 116                              $t['tm_mday']);
 117         }
 118
 119         return  Element('td', array('align' => 'center'),
 120                         "&nbsp;${date}&nbsp;");
 121     }
 122
 123     function run($dbi, $argstr, $request) {
 124         $this->args = $this->getArgs($argstr, $request);
 125         $args       = &$this->args;
 126
 127         $now = localtime(time(), 1);
 128         foreach ( array('month' => $now['tm_mon'] + 1,
 129                         'year'  => $now['tm_year'] + 1900)
 130                   as $param => $dflt ) {
 131
 132             if (!($args[$param] = intval($args[$param])))
 133                 $args[$param]   = $dflt;
 134
 135         }
 136
 137         $time = mktime(12, 0, 0,                               // hh, mm, ss,
 138                        $args['month'] + $args['month_offset'], // month (1-12)
 139                        1,                                      // mday (1-31)
 140                        $args['year']);
 141
 142         $rows[] = $this->__header($request->getArg('pagename'), $time);
 143         $rows[] = $this->__daynames($args['start_wday']);
 144
 145         $t = localtime($time, 1);
 146         $col = (7 + $t['tm_wday'] - $args['start_wday']) % 7;
 147         $row = $col > 0 ? Element('td', array('colspan' => $col)) : '';
 148         $done = false;
 149
 150         while (!$done) {
 151             $row .= $this->__date($dbi, $time);
 152
 153             if (++$col % 7 == 0) {
 154                 $rows[] = Element('tr', $row);
 155                 $col    = 0;
 156                 $row    = '';
 157             }
 158
 159             $time += SECONDS_PER_DAY;
 160             $t     = localtime($time, 1);
 161             $done  = $t['tm_mday'] == 1;
 162         }
 163
 164         if ($row) {
 165             $row   .= Element('td', array('colspan' => (42 - $col) % 7));
 166             $rows[] = Element('tr', $row);
 167         }
 168
 169         return Element('table', array('cellspacing' => 0,
 170                                       'cellpadding' => 2,
 171                                       'class'       => 'cal'),
 172                        "\n" . join("\n", $rows) . "\n");
 173     }
 174 };
 175
 176 // For emacs users
 177 // Local Variables:
 178 // mode: php
 179 // tab-width: 8
 180 // c-basic-offset: 4
 181 // c-hanging-comment-ender-p: nil
 182 // indent-tabs-mode: nil
 183 // End:
 184 ?>