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<?php
/*
Widget Name: Calendar
Description: Display a calendar of this months posts.
Author: Philip M. Hofer (Frumph)
Author URI: http://frumph.net/
Version: 1.04
*/
/**
* Display calendar with days that have posts as links.
*
* The calendar is cached, which will be retrieved, if it exists. If there are
* no posts for the month, then it will not be displayed.
*
* @since 1.0.0
*
* @param bool $initial Optional, default is true. Use initial calendar names.
* @param bool $echo Optional, default is true. Set to false for return.
*/
function comicpress_get_calendar($initial = true, $echo = true, $taxonomy = 'post') {
global $wpdb, $m, $monthnum, $year, $wp_locale, $posts;
if (empty($taxonomy)) $taxonomy = 'post';
$taxonomy = $wpdb->escape($taxonomy);
$cache = array();
$key = md5( $m . $monthnum . $year );
if ( $cache = wp_cache_get( 'get_comicpress_calendar', 'calendar' ) ) {
if ( is_array($cache) && isset( $cache[ $key ] ) ) {
if ( $echo ) {
echo apply_filters( 'get_comicpress_calendar', $cache[$key] );
return;
} else {
return apply_filters( 'get_comicpress_calendar', $cache[$key] );
}
}
}
if ( !is_array($cache) )
$cache = array();
// Quick check. If we have no posts at all, abort!
if ( !$posts ) {
$gotsome = $wpdb->get_var("SELECT 1 as test FROM $wpdb->posts WHERE post_type = '${taxonomy}' AND post_status = 'publish' LIMIT 1");
if ( !$gotsome ) {
$cache[ $key ] = '';
wp_cache_set( 'get_comicpress_calendar', $cache, 'calendar' );
return;
}
}
if ( isset($_GET['w']) )
$w = ''.intval($_GET['w']);
// week_begins = 0 stands for Sunday
$week_begins = intval(get_option('start_of_week'));
// Let's figure out when we are
if ( !empty($monthnum) && !empty($year) ) {
$thismonth = ''.zeroise(intval($monthnum), 2);
$thisyear = ''.intval($year);
} elseif ( !empty($w) ) {
// We need to get the month from MySQL
$thisyear = ''.intval(substr($m, 0, 4));
$d = (($w - 1) * 7) + 6; //it seems MySQL's weeks disagree with PHP's
$thismonth = $wpdb->get_var("SELECT DATE_FORMAT((DATE_ADD('${thisyear}0101', INTERVAL $d DAY) ), '%m')");
} elseif ( !empty($m) ) {
$thisyear = ''.intval(substr($m, 0, 4));
if ( strlen($m) < 6 )
$thismonth = '01';
else
$thismonth = ''.zeroise(intval(substr($m, 4, 2)), 2);
} else {
$thisyear = gmdate('Y', current_time('timestamp'));
$thismonth = gmdate('m', current_time('timestamp'));
}
$unixmonth = mktime(0, 0 , 0, $thismonth, 1, $thisyear);
// Get the next and previous month and year with at least one post
$previous = $wpdb->get_row("SELECT DISTINCT MONTH(post_date) AS month, YEAR(post_date) AS year
FROM $wpdb->posts
WHERE post_date < '$thisyear-$thismonth-01'
AND post_type = '${taxonomy}' AND post_status = 'publish'
ORDER BY post_date DESC
LIMIT 1");
$next = $wpdb->get_row("SELECT DISTINCT MONTH(post_date) AS month, YEAR(post_date) AS year
FROM $wpdb->posts
WHERE post_date > '$thisyear-$thismonth-01'
AND MONTH( post_date ) != MONTH( '$thisyear-$thismonth-01' )
AND post_type = '${taxonomy}' AND post_status = 'publish'
ORDER BY post_date ASC
LIMIT 1");
/* translators: Calendar caption: 1: month name, 2: 4-digit year */
$calendar_caption = _x('%1$s %2$s', 'calendar caption', 'comicpress');
$calendar_output = '<table id="wp-calendar" summary="' . esc_attr__('Calendar', 'comicpress') . '">
<caption>' . sprintf($calendar_caption, $wp_locale->get_month($thismonth), date('Y', $unixmonth)) . '</caption>
<thead>
<tr>';
$myweek = array();
for ( $wdcount=0; $wdcount<=6; $wdcount++ ) {
$myweek[] = $wp_locale->get_weekday(($wdcount+$week_begins)%7);
}
foreach ( $myweek as $wd ) {
$day_name = (true == $initial) ? $wp_locale->get_weekday_initial($wd) : $wp_locale->get_weekday_abbrev($wd);
$wd = esc_attr($wd);
$calendar_output .= "\n\t\t<th scope=\"col\" title=\"$wd\">$day_name</th>";
}
$calendar_output .= '
</tr>
</thead>
<tfoot>
<tr>';
if ( $previous ) {
$calendar_output .= "\n\t\t".'<td colspan="3" id="prev"><a href="' . get_month_link($previous->year, $previous->month) . '" title="' . sprintf(__('View posts for %1$s %2$s', 'comicpress'), $wp_locale->get_month($previous->month), date('Y', mktime(0, 0 , 0, $previous->month, 1, $previous->year))) . '">&laquo; ' . $wp_locale->get_month_abbrev($wp_locale->get_month($previous->month)) . '</a></td>';
} else {
$calendar_output .= "\n\t\t".'<td colspan="3" id="prev" class="pad">&nbsp;</td>';
}
$calendar_output .= "\n\t\t".'<td class="pad">&nbsp;</td>';
if ( $next ) {
$calendar_output .= "\n\t\t".'<td colspan="3" id="next"><a href="' . get_month_link($next->year, $next->month) . '" title="' . esc_attr( sprintf(__('View posts for %1$s %2$s', 'comicpress'), $wp_locale->get_month($next->month), date('Y', mktime(0, 0 , 0, $next->month, 1, $next->year))) ) . '">' . $wp_locale->get_month_abbrev($wp_locale->get_month($next->month)) . ' &raquo;</a></td>';
} else {
$calendar_output .= "\n\t\t".'<td colspan="3" id="next" class="pad">&nbsp;</td>';
}
$calendar_output .= '
</tr>
</tfoot>
<tbody>
<tr>';
// Get days with posts
$dayswithposts = $wpdb->get_results("SELECT DISTINCT DAYOFMONTH(post_date)
FROM $wpdb->posts WHERE MONTH(post_date) = '$thismonth'
AND YEAR(post_date) = '$thisyear'
AND post_type = '${taxonomy}' AND post_status = 'publish'
AND post_date < '" . current_time('mysql') . '\'', ARRAY_N);
if ( $dayswithposts ) {
foreach ( (array) $dayswithposts as $daywith ) {
$daywithpost[] = $daywith[0];
}
} else {
$daywithpost = array();
}
if (strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE') !== false || stripos($_SERVER['HTTP_USER_AGENT'], 'camino') !== false || stripos($_SERVER['HTTP_USER_AGENT'], 'safari') !== false)
$ak_title_separator = "\n";
else
$ak_title_separator = ', ';
$ak_titles_for_day = array();
$ak_post_titles = $wpdb->get_results("SELECT ID, post_title, DAYOFMONTH(post_date) as dom "
."FROM $wpdb->posts "
."WHERE YEAR(post_date) = '$thisyear' "
."AND MONTH(post_date) = '$thismonth' "
."AND post_date < '".current_time('mysql')."' "
."AND post_type = 'post' AND post_status = 'publish'"
);
if ( $ak_post_titles ) {
foreach ( (array) $ak_post_titles as $ak_post_title ) {
$post_title = esc_attr( apply_filters( 'the_title', $ak_post_title->post_title, $ak_post_title->ID ) );
if ( empty($ak_titles_for_day['day_'.$ak_post_title->dom]) )
$ak_titles_for_day['day_'.$ak_post_title->dom] = '';
if ( empty($ak_titles_for_day["$ak_post_title->dom"]) ) // first one
$ak_titles_for_day["$ak_post_title->dom"] = $post_title;
else
$ak_titles_for_day["$ak_post_title->dom"] .= $ak_title_separator . $post_title;
}
}
// See how much we should pad in the beginning
$pad = calendar_week_mod(date('w', $unixmonth)-$week_begins);
if ( 0 != $pad )
$calendar_output .= "\n\t\t".'<td colspan="'. esc_attr($pad) .'" class="pad">&nbsp;</td>';
$daysinmonth = intval(date('t', $unixmonth));
for ( $day = 1; $day <= $daysinmonth; ++$day ) {
if ( isset($newrow) && $newrow )
$calendar_output .= "\n\t</tr>\n\t<tr>\n\t\t";
$newrow = false;
if ( $day == gmdate('j', current_time('timestamp')) && $thismonth == gmdate('m', current_time('timestamp')) && $thisyear == gmdate('Y', current_time('timestamp')) )
$calendar_output .= '<td id="today">';
else
$calendar_output .= '<td>';
if ( in_array($day, $daywithpost) ) // any posts today?
$calendar_output .= '<a href="' . get_day_link($thisyear, $thismonth, $day) . "\" title=\"" . esc_attr($ak_titles_for_day[$day]) . "\">$day</a>";
else
$calendar_output .= $day;
$calendar_output .= '</td>';
if ( 6 == calendar_week_mod(date('w', mktime(0, 0 , 0, $thismonth, $day, $thisyear))-$week_begins) )
$newrow = true;
}
$pad = 7 - calendar_week_mod(date('w', mktime(0, 0 , 0, $thismonth, $day, $thisyear))-$week_begins);
if ( $pad != 0 && $pad != 7 )
$calendar_output .= "\n\t\t".'<td class="pad" colspan="'. esc_attr($pad) .'">&nbsp;</td>';
$calendar_output .= "\n\t</tr>\n\t</tbody>\n\t</table>";
$cache[ $key ] = $calendar_output;
wp_cache_set( 'get_comicpress_calendar', $cache, 'calendar' );
if ( $echo )
echo apply_filters( 'get_comicpress_calendar', $calendar_output );
else
return apply_filters( 'get_comicpress_calendar', $calendar_output );
}
/**
* Purge the cached results of get_calendar.
*
* @see get_calendar
* @since 2.1.0
*/
function comicpress_delete_get_calendar_cache() {
wp_cache_delete( 'get_comicpress_calendar', 'calendar' );
}
add_action( 'save_post', 'comicpress_delete_get_calendar_cache' );
add_action( 'delete_post', 'comicpress_delete_get_calendar_cache' );
add_action( 'update_option_start_of_week', 'comicpress_delete_get_calendar_cache' );
add_action( 'update_option_gmt_offset', 'comicpress_delete_get_calendar_cache' );
class comicpress_calendar_widget extends WP_Widget {
/**
* Register widget with WordPress.
*/
function __construct() {
parent::__construct(
__CLASS__, // Base ID
__( 'ComicPress - Posts Calendar', 'comicpress' ), // Name
array( 'classname' => __CLASS__, 'description' => __( 'Display a calendar showing this months posts. (this calendar does not drop lines if there is no title given.)', 'comicpress' ), ) //Args
);
}
/**
* Front-end display of widget.
*
* @see WP_Widget::widget()
*
* @param array $args Widget arguments.
* @param array $instance Saved values from database.
*/
function widget($args, $instance) {
global $post, $wp_query;
extract($args, EXTR_SKIP);
echo $before_widget;
if (!empty($instance)) { extract($instance); } ?>
<div id="wp-calendar-head"></div>
<div id="wp-calendar-wrap">
<?php if (!empty($thumbnail)) { ?>
<div class="wp-calendar-download">
<?php if (!empty($link)) { ?>
<a href="<?php echo esc_attr($link); ?>"><img src="<?php echo esc_attr($thumbnail); ?>" class="wp-calendar-thumb" alt="" /></a>
<?php } else { ?>
<img src="<?php echo esc_attr($thumbnail); ?>" class="wp-calendar-thumb" alt="" />
<?php } ?>
<div class="wp-calendar-download-links">
<?php if (!empty($small) || !empty($medium) || !empty($large)) { ?>
<?php _e('DOWNLOAD','comicpress'); ?>
<?php
foreach (array(
'small' => array(__('Download Small', 'comicpress'), __('S', 'comicpress')),
'medium' => array(__('Download Medium', 'comicpress'), __('M', 'comicpress')),
'large' => array(__('Download Large', 'comicpress'), __('L', 'comicpress'))
) as $field => $text) {
if (!empty(${$field})) {
?><a href="<?php echo esc_attr(${$field}); ?>" title="<?php echo esc_attr($text[0]); ?>"><?php echo esc_html($text[1]); ?></a><?php
}
}
} ?>
</div>
</div>
<?php } ?>
<?php
comicpress_get_calendar(true, true, 'post');
?>
</div>
<div id="wp-calendar-foot"></div>
<?php
echo $after_widget;
}
/**
* Sanitize widget form values as they are saved.
*
* @see WP_Widget::update()
*
* @param array $new_instance Values just sent to be saved.
* @param array $old_instance Previously saved values from database.
*
* @return array Updated safe values to be saved.
*/
function update($new_instance, $old_instance = array()) {
$instance = array();
foreach (array('thumbnail', 'small', 'medium', 'large', 'link') as $field) {
if (isset($new_instance[$field])) { $instance[$field] = strip_tags($new_instance[$field]); }
}
return $instance;
}
/**
* Back-end widget form.
*
* @see WP_Widget::form()
*
* @param array $instance Previously saved values from database.
*/
function form($instance) {
$instance = wp_parse_args( (array) $instance, array( 'thumbnail' => '', 'small' => '', 'medium' => '', 'large' => '', 'link' => '') );
$thumbnail = strip_tags($instance['thumbnail']);
$small = strip_tags($instance['small']);
$medium = strip_tags($instance['medium']);
$large = strip_tags($instance['large']);
$link = $instance['link'];
foreach (array(
'thumbnail' => __('Thumbnail URL (178px by 130px):','comicpress'),
'link' => array('label' => __('Add link on thumbnails:','comicpress'), 'after' => '<hr />'),
'small' => __('Wallpaper URL (Small):','comicpress'),
'medium' => __('Wallpaper URL (Medium):','comicpress'),
'large' => __('Wallpaper URL (Large):','comicpress'),
) as $field => $label) {
unset($after);
if (is_array($label)) { extract($label); }
?><p>
<label for="<?php echo $this->get_field_id($field); ?>"><?php echo esc_html($label) ;?>
<input class="widefat"
id="<?php echo $this->get_field_id($field); ?>"
name="<?php echo $this->get_field_name($field); ?>"
type="text"
value="<?php echo esc_attr($instance[$field]); ?>" />
</label>
</p><?php
if (isset($after)) { echo $after; }
}
}
}
// register Calendar widget
function comicpress_calendar_widget_init() {
register_widget('comicpress_calendar_widget');
}
add_action( 'widgets_init', 'comicpress_calendar_widget_init');