lib/plugin/Calendar.php

   1 <?php // -*-php-*-
   2 rcs_id('$Id: Calendar.php,v 1.17 2002-02-06 02:41:25 carstenklapp Exp $');
   3
   4 if (!defined('SECONDS_PER_DAY'))
   5 define('SECONDS_PER_DAY', 24 * 3600);
   6
   7 // FIXME: Still needs:
   8 //
   9 //   o Better way to navigate to distant months.
  10 //     (Maybe a form with selectors for month and year)?
  11 //
  12 //   o Docs.  Write a pgsrc/CalendarPlugin.
  13 //
  14 // It would be nice to have some way to get from the individual date
  15 // pages back to the calendar page. (Subpage support might make this
  16 // easier.)
  17
  18 /**
  19  * A class representing a clickable day "button".
  20  */
  21 class DayButton extends HtmlElement {
  22     /** Constructor
  23      *
  24      */
  25     function DayButton ($page_for_date, $mday, $isWikiPage, $istoday) {
  26
  27         $this->HtmlElement('td', array('align' => 'center'));
  28
  29         if ($isWikiPage) {
  30             $class = 'cal-day';
  31             $title = $page_for_date;
  32             $mday = HTML::em($mday);
  33         }
  34         else {
  35             $class = 'cal-hide';
  36             $title = sprintf(_("Edit %s"), $page_for_date);
  37         }
  38         if ($istoday) {
  39             $mday = HTML::strong($mday);
  40             $this->setAttr('class', 'cal-today');
  41         }
  42         $url = WikiURL($page_for_date, array('action' => 'edit'));
  43         $this->pushContent(HTML::a(array('href'  => $url,
  44                                          'class' => $class,
  45                                          'title' => $title), $mday));
  46     }
  47
  48 };
  49
  50 /**
  51  */
  52 class WikiPlugin_Calendar
  53 extends WikiPlugin
  54 {
  55     function getName () {
  56         return _("Calendar");
  57     }
  58
  59     function getDescription () {
  60         return _("Calendar");
  61     }
  62
  63     function getDefaultArguments() {
  64         return array('prefix'       => '[pagename].',
  65                      'date_format'  => '%Y-%m-%d',
  66                      'year'         => '',
  67                      'month'        => '',
  68                      'month_offset' => 0,
  69
  70                      'month_format' => '%B, %Y',
  71                      'wday_format'  => '%a',
  72                      'start_wday'   => '0');
  73     }
  74
  75     function __header($pagename, $time) {
  76         $args = &$this->args;
  77
  78         $t = localtime($time - SECONDS_PER_DAY, 1);
  79         $prev_url = WikiURL($pagename, array('month' => $t['tm_mon'] + 1,
  80                                              'year'  => $t['tm_year'] + 1900));
  81
  82         $t = localtime($time + 32 * SECONDS_PER_DAY, 1);
  83         $next_url = WikiURL($pagename, array('month' => $t['tm_mon'] + 1,
  84                                              'year'  => $t['tm_year'] + 1900));
  85
  86         $prev = HTML::a(array('href'  => $prev_url,
  87                               'class' => 'cal-arrow',
  88                               'title' => _("Previous Month")),
  89                         '<');
  90         $next = HTML::a(array('href'  => $next_url,
  91                               'class' => 'cal-arrow',
  92                               'title' => _("Next Month")),
  93                         '>');
  94
  95
  96         $row = HTML::tr(HTML::td(array('align' => 'left'), $prev),
  97                         HTML::td(array('align' => 'center'),
  98                                  HTML::strong(array('class' => 'cal-header'),
  99                                               strftime($args['month_format'], $time))),
 100                         HTML::td(array('align' => 'right'), $next));
 101
 102         return HTML::tr(HTML::td(array('colspan' => 7,
 103                                        'align'   => 'center'),
 104                                  HTML::table(array('width' => '100%',
 105                                                    'class' => 'cal-header'), $row)));
 106     }
 107
 108
 109     function __daynames($start_wday) {
 110         $time  = mktime(12, 0, 0, 1, 1, 2001);
 111         $t     = localtime($time, 1);
 112         $time += (7 + $start_wday - $t['tm_wday']) * SECONDS_PER_DAY;
 113
 114         $t = localtime($time, 1);
 115         assert($t['tm_wday'] == $start_wday);
 116
 117         $fs = $this->args['wday_format'];
 118         $row = HTML::tr();
 119         for ($i = 0; $i < 7; $i++) {
 120             $row->pushContent(HTML::td(array('class' => 'cal-dayname',
 121                                              'align' => 'center'),
 122                                        strftime($fs, $time)));
 123             $time += SECONDS_PER_DAY;
 124         }
 125         return $row;
 126     }
 127
 128     function __date($dbi, $time) {
 129         $args = &$this->args;
 130
 131         $page_for_date = $args['prefix'] . strftime($args['date_format'],
 132                                                     $time);
 133         $t = localtime($time, 1);
 134         $mday = $t['tm_mday'];
 135
 136         $isWikiPage = $dbi->isWikiPage($page_for_date);
 137         $istoday = $mday == $this->_today;
 138
 139         return new DayButton($page_for_date, $mday, $isWikiPage, $istoday);
 140     }
 141
 142     function run($dbi, $argstr, $request) {
 143         $this->args = $this->getArgs($argstr, $request);
 144         $args       = &$this->args;
 145
 146         $now = localtime(time(), 1);
 147         foreach ( array('month' => $now['tm_mon'] + 1,
 148                         'year'  => $now['tm_year'] + 1900)
 149                   as $param => $dflt ) {
 150
 151             if (!($args[$param] = intval($args[$param])))
 152                 $args[$param]   = $dflt;
 153
 154         }
 155
 156         $time = mktime(12, 0, 0,                               // hh, mm, ss,
 157                        $args['month'] + $args['month_offset'], // month (1-12)
 158                        1,                                      // mday (1-31)
 159                        $args['year']);
 160
 161         $cal = HTML::table(array('cellspacing' => 0,
 162                                  'cellpadding' => 2,
 163                                  'class'       => 'cal'),
 164                            $this->__header($request->getArg('pagename'), $time),
 165                            $this->__daynames($args['start_wday']));
 166
 167         $t = localtime($time, 1);
 168         $now = localtime(time(), 1);
 169
 170         if ($now['tm_year'] == $t['tm_year'] && $now['tm_mon'] == $t['tm_mon'])
 171             $this->_today = $now['tm_mday'];
 172         else
 173             $this->_today = false;
 174
 175
 176         $row = HTML::tr();
 177
 178         $col = (7 + $t['tm_wday'] - $args['start_wday']) % 7;
 179         if ($col > 0)
 180             $row->pushContent(HTML::td(array('colspan' => $col)));
 181         $done = false;
 182
 183         while (!$done) {
 184             $row->pushContent($this->__date($dbi, $time));
 185
 186             if (++$col % 7 == 0) {
 187                 $cal->pushContent($row);
 188                 $col = 0;
 189                 $row = HTML::tr();
 190             }
 191
 192             $time += SECONDS_PER_DAY;
 193             $t     = localtime($time, 1);
 194             $done  = $t['tm_mday'] == 1;
 195         }
 196
 197         if ($row->getContent()) {
 198             $row->pushContent(HTML::td(array('colspan' => (42 - $col) % 7)));
 199             $cal->pushContent($row);
 200         }
 201         return $cal;
 202     }
 203 };
 204
 205 // For emacs users
 206 // Local Variables:
 207 // mode: php
 208 // tab-width: 8
 209 // c-basic-offset: 4
 210 // c-hanging-comment-ender-p: nil
 211 // indent-tabs-mode: nil
 212 // End:
 213 ?>