lib/plugin/Calendar.php

   1 <?php // -*-php-*-
   2 rcs_id('$Id: Calendar.php,v 1.4 2001-12-16 18:33:25 dairiki Exp $');
   3
   4 if (!defined('SECONDS_PER_DAY'))
   5     define('SECONDS_PER_DAY', 24 * 3600);
   6
   7 // FIXME: Still needs:
   8 //
   9 //   o Better way to navigate to distant months.
  10 //     (Maybe a form with selectors for month and year)?
  11 //
  12 //   o Docs.  Write a pgsrc/CalendarPlugin.
  13 //
  14 // It would be nice to have some way to get from the individual
  15 // date pages back to the calendar page.  (Subpage support might
  16 // make this easier.)
  17
  18 /**
  19  */
  20 class WikiPlugin_Calendar
  21 extends WikiPlugin
  22 {
  23     function getName () {
  24         return _("Calendar");
  25     }
  26
  27     function getDescription () {
  28         return _("Calendar");
  29     }
  30
  31     function getDefaultArguments() {
  32         // FIXME: how to exclude multiple pages?
  33         return array('prefix'           => '[pagename]:',
  34                      'date_format'      => '%Y-%m-%d',
  35                      'year'             => '',
  36                      'month'            => '',
  37                      'month_offset'     => 0,
  38
  39                      'month_format'     => '%B, %Y',
  40                      'wday_format'      => '%a',
  41                      'start_wday'       => '0');
  42     }
  43
  44     function __header($pagename, $time)  {
  45         $args = &$this->args;
  46
  47         $t = localtime($time - SECONDS_PER_DAY, 1);
  48         $prev_url = WikiURL($pagename, array('month' => $t['tm_mon'] + 1,
  49                                              'year' => $t['tm_year'] + 1900));
  50
  51         $t = localtime($time + 32 * SECONDS_PER_DAY, 1);
  52         $next_url = WikiURL($pagename, array('month' => $t['tm_mon'] + 1,
  53                                              'year' => $t['tm_year'] + 1900));
  54
  55         $prev = QElement('a', array('href' => $prev_url,
  56                                     'class' => 'cal-arrow',
  57                                     'title' => gettext("Previous Month")),
  58                          '<');
  59         $next = QElement('a', array('href' => $next_url,
  60                                     'class' => 'cal-arrow',
  61                                     'title' => gettext("Next Month")),
  62                          '>');
  63
  64
  65         $row = Element('td', array('align' => 'left'), $prev);
  66         $row .= Element('td', array('align' => 'center'),
  67                         QElement('b', array('class' => 'cal-header'),
  68                                  strftime($args['month_format'], $time)));
  69         $row .= Element('td', array('align' => 'right'), $next);
  70
  71         $row =  Element('table', array('width' => '100%'),
  72                         Element('tr', $row));
  73
  74         return Element('tr', Element('td', array('colspan' => 7,
  75                                                  'align' => 'center'),
  76                                      $row));
  77     }
  78
  79
  80     function __daynames($start_wday) {
  81         $time = mktime(12, 0, 0, 1, 1, 2001);
  82         $t = localtime($time, 1);
  83         $time += (7 + $start_wday - $t['tm_wday']) * SECONDS_PER_DAY;
  84
  85         $t = localtime($time, 1);
  86         assert($t['tm_wday'] == $start_wday);
  87
  88         $fs = $this->args['wday_format'];
  89         for ($i = 0; $i < 7; $i++) {
  90             $days[$i] = QElement('td', array('class' => 'cal-dayname',
  91                                              'align' => 'center'),
  92                                  strftime($fs, $time));
  93             $time += SECONDS_PER_DAY;
  94         }
  95         return Element('tr', join('', $days));
  96     }
  97
  98     function __date($dbi, $time) {
  99         $args = &$this->args;
 100
 101         $page_for_date = $args['prefix'] . strftime($args['date_format'], $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('b', $t['tm_mday']));
 109         }
 110         else {
 111             $date = QElement('a', array('class' => 'cal-hide',
 112                                         'href'  => WikiURL($page_for_date,
 113                                                            array('action' => 'edit')),
 114                                         'title' => sprintf(_("Edit %s"), $page_for_date)),
 115                              $t['tm_mday']);
 116         }
 117
 118         return  Element('td', array('align' => 'center'),
 119                         "&nbsp;${date}&nbsp;");
 120     }
 121
 122     function run($dbi, $argstr, $request) {
 123         $this->args = $this->getArgs($argstr, $request);
 124         $args = &$this->args;
 125
 126         $now = localtime(time(), 1);
 127         foreach ( array('month' => $now['tm_mon'] + 1,
 128                         'year' => $now['tm_year'] + 1900)
 129                   as $param => $dflt) {
 130             if (!($args[$param] = intval($args[$param])))
 131                 $args[$param] = $dflt;
 132
 133         }
 134
 135         $time = mktime(12, 0, 0,  // hh, mm, ss,
 136                        $args['month'] + $args['month_offset'], // month (1-12)
 137                        1, // mday (1-31)
 138                        $args['year']);
 139
 140         $rows[] = $this->__header($request->getArg('pagename'), $time);
 141         $rows[] = $this->__daynames($args['start_wday']);
 142
 143         $t = localtime($time, 1);
 144         $col = (7 + $t['tm_wday'] - $args['start_wday']) % 7;
 145         $row = $col > 0 ? Element('td', array('colspan' => $col)) : '';
 146         $done = false;
 147
 148         while (!$done) {
 149             $row .= $this->__date($dbi, $time);
 150
 151             if (++$col % 7 == 0) {
 152                 $rows[] = Element('tr', $row);
 153                 $col = 0;
 154                 $row = '';
 155             }
 156
 157             $time += SECONDS_PER_DAY;
 158             $t = localtime($time, 1);
 159             $done = $t['tm_mday'] == 1;
 160         }
 161
 162         if ($row) {
 163             $row .= Element('td', array('colspan' => (42 - $col) % 7));
 164             $rows[] = Element('tr', $row);
 165         }
 166
 167         return Element('table', array('cellspacing' => 0,
 168                                       'cellpadding' => 2,
 169                                       'class' => 'cal'),
 170                        "\n" . join("\n", $rows) . "\n");
 171     }
 172 };
 173
 174 // For emacs users
 175 // Local Variables:
 176 // mode: php
 177 // tab-width: 8
 178 // c-basic-offset: 4
 179 // c-hanging-comment-ender-p: nil
 180 // indent-tabs-mode: nil
 181 // End:
 182 ?>