<?php /** * @package Polylang */ if ( ! class_exists( 'WP_Widget_Calendar' ) ) { require_once ABSPATH . '/wp-includes/default-widgets.php'; } /** * This classes rewrite the whole Calendar widget functionality as there is no filter on sql queries and only a filter on final output. * Code last checked: WP 5.5. * * A request to add filters on sql queries exists: http://core.trac.wordpress.org/ticket/15202. * Method used in 0.4.x: use of the get_calendar filter and overwrite the output of get_calendar function -> not very efficient (add 4 to 5 sql queries). * Method used since 0.5: remove the WP widget and replace it by our own -> our language filter will not work if get_calendar is called directly by a theme. * * @since 0.5 */ class PLL_Widget_Calendar extends WP_Widget_Calendar { protected static $pll_instance = 0; // Can't use $instance of WP_Widget_Calendar as it's private :/. /** * Outputs the content for the current Calendar widget instance. * Modified version of the parent function to call our own get_calendar() method. * * @since 0.5 * * @param array $args Display arguments including 'before_title', 'after_title', * 'before_widget', and 'after_widget'. * @param array $instance The settings for the particular instance of the widget. */ public function widget( $args, $instance ) { $title = ! empty( $instance['title'] ) ? $instance['title'] : ''; /** This filter is documented in wp-includes/widgets/class-wp-widget-pages.php */ $title = apply_filters( 'widget_title', $title, $instance, $this->id_base ); echo $args['before_widget']; if ( $title ) { echo $args['before_title'] . $title . $args['after_title']; } if ( 0 === self::$pll_instance ) { #modified# echo '<div id="calendar_wrap" class="calendar_wrap">'; } else { echo '<div class="calendar_wrap">'; } empty( PLL()->curlang ) ? get_calendar() : self::get_calendar(); #modified# echo '</div>'; echo $args['after_widget']; ++self::$pll_instance; #modified# } /** * Modified version of the WP `get_calendar()` function to filter the queries. * * @since 0.5 * @since 3.8 New argument $args added, with backward compatibility (WP 6.8). * * @param array $args { * Optional. Arguments for the `get_calendar` function. * * @type bool $initial Whether to use initial calendar names. Default true. * @type bool $display Whether to display the calendar output. Default true. * @type string $post_type Optional. Post type. Default 'post'. * } * @return void|string Void if `$display` argument is true, calendar HTML if `$display` is false. */ static function get_calendar( $args = array() ) { global $wpdb, $m, $monthnum, $year, $wp_locale, $posts; $defaults = array( 'initial' => true, 'display' => true, 'post_type' => 'post', ); $original_args = func_get_args(); $args = array(); if ( ! empty( $original_args ) ) { if ( ! is_array( $original_args[0] ) ) { if ( isset( $original_args[0] ) && is_bool( $original_args[0] ) ) { $defaults['initial'] = $original_args[0]; } if ( isset( $original_args[1] ) && is_bool( $original_args[1] ) ) { $defaults['display'] = $original_args[1]; } } else { $args = $original_args[0]; } } /** This filter is documented in wp-includes/general-template.php */ $args = apply_filters( 'get_calendar_args', wp_parse_args( $args, $defaults ) ); $args['lang'] = PLL()->curlang->slug; #added# if ( ! post_type_exists( $args['post_type'] ) ) { $args['post_type'] = 'post'; } $w = 0; if ( isset( $_GET['w'] ) ) { $w = (int) $_GET['w']; } /* * Normalize the cache key. * * The following ensures the same cache key is used for the same parameter * and parameter equivalents. This prevents `post_type > post, initial > true` * from generating a different key from the same values in the reverse order. * * `display` is excluded from the cache key as the cache contains the same * HTML regardless of this function's need to echo or return the output. * * The global values contain data generated by the URL query string variables. */ $cache_args = $args; unset( $cache_args['display'] ); $cache_args['globals'] = array( 'm' => $m, 'monthnum' => $monthnum, 'year' => $year, 'week' => $w, ); wp_recursive_ksort( $cache_args ); $key = md5( serialize( $cache_args ) ); $cache = wp_cache_get( 'get_calendar', 'calendar' ); if ( $cache && is_array( $cache ) && isset( $cache[ $key ] ) ) { /** This filter is documented in wp-includes/general-template.php */ $output = apply_filters( 'get_calendar', $cache[ $key ], $args ); if ( $args['display'] ) { echo $output; return; } return $output; } if ( ! is_array( $cache ) ) { $cache = array(); } $post_type = $args['post_type']; // Quick check. If we have no posts at all, abort! if ( ! $posts ) { $prepared_query = $wpdb->prepare( "SELECT 1 as test FROM $wpdb->posts WHERE post_type = %s AND post_status = 'publish' LIMIT 1", $post_type ); $gotsome = $wpdb->get_var( $prepared_query ); if ( ! $gotsome ) { $cache[ $key ] = ''; wp_cache_set( 'get_calendar', $cache, 'calendar' ); return; } } // week_begins = 0 stands for Sunday. $week_begins = (int) get_option( 'start_of_week' ); // Let's figure out when we are. if ( ! empty( $monthnum ) && ! empty( $year ) ) { $thismonth = zeroise( (int) $monthnum, 2 ); $thisyear = (int) $year; } elseif ( ! empty( $w ) ) { // We need to get the month from MySQL. $thisyear = (int) substr( $m, 0, 4 ); // It seems MySQL's weeks disagree with PHP's. $d = ( ( $w - 1 ) * 7 ) + 6; $thismonth = $wpdb->get_var( "SELECT DATE_FORMAT((DATE_ADD('{$thisyear}0101', INTERVAL $d DAY) ), '%m')" ); } elseif ( ! empty( $m ) ) { $thisyear = (int) substr( $m, 0, 4 ); if ( strlen( $m ) < 6 ) { $thismonth = '01'; } else { $thismonth = zeroise( (int) substr( $m, 4, 2 ), 2 ); } } else { $thisyear = current_time( 'Y' ); $thismonth = current_time( 'm' ); } $unixmonth = mktime( 0, 0, 0, $thismonth, 1, $thisyear ); $last_day = gmdate( 't', $unixmonth ); $join_clause = PLL()->model->post->join_clause(); #added# $where_clause = PLL()->model->post->where_clause( PLL()->curlang ); #added# // Get the next and previous month and year with at least one post. $previous_prepared_query = $wpdb->prepare( "SELECT MONTH(post_date) AS month, YEAR(post_date) AS year FROM $wpdb->posts $join_clause WHERE post_date < '$thisyear-$thismonth-01' AND post_type = %s AND post_status = 'publish' $where_clause ORDER BY post_date DESC LIMIT 1", $post_type ); #modified# $previous = $wpdb->get_row( $previous_prepared_query ); $next_prepared_query = $wpdb->prepare( "SELECT MONTH(post_date) AS month, YEAR(post_date) AS year FROM $wpdb->posts $join_clause WHERE post_date > '$thisyear-$thismonth-{$last_day} 23:59:59' AND post_type = %s AND post_status = 'publish' $where_clause ORDER BY post_date ASC LIMIT 1", $post_type ); #modified# $next = $wpdb->get_row( $next_prepared_query ); /* translators: Calendar caption: 1: Month name, 2: 4-digit year. */ $calendar_caption = _x( '%1$s %2$s', 'calendar caption' ); $calendar_output = '<table id="wp-calendar" class="wp-calendar-table"> <caption>' . sprintf( $calendar_caption, $wp_locale->get_month( $thismonth ), gmdate( '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 = $args['initial'] ? $wp_locale->get_weekday_initial( $wd ) : $wp_locale->get_weekday_abbrev( $wd ); $wd = esc_attr( $wd ); $calendar_output .= "\n\t\t<th scope=\"col\" aria-label=\"$wd\">$day_name</th>"; } $calendar_output .= ' </tr> </thead> <tbody> <tr>'; $daywithpost = array(); // Get days with posts. $dayswithposts_prepared_query = $wpdb->prepare( "SELECT DISTINCT DAYOFMONTH(post_date) FROM $wpdb->posts $join_clause WHERE post_date >= '{$thisyear}-{$thismonth}-01 00:00:00' AND post_type = %s AND post_status = 'publish' AND post_date <= '{$thisyear}-{$thismonth}-{$last_day} 23:59:59' $where_clause", $post_type ); #modified# $dayswithposts = $wpdb->get_results( $dayswithposts_prepared_query, ARRAY_N ); if ( $dayswithposts ) { foreach ( (array) $dayswithposts as $daywith ) { $daywithpost[] = (int) $daywith[0]; } } // See how much we should pad in the beginning. $pad = calendar_week_mod( (int) gmdate( 'w', $unixmonth ) - $week_begins ); if ( 0 != $pad ) { $calendar_output .= "\n\t\t" . '<td colspan="' . esc_attr( $pad ) . '" class="pad"> </td>'; } $newrow = false; $daysinmonth = (int) gmdate( '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 ( current_time( 'j' ) == $day && current_time( 'm' ) == $thismonth && current_time( 'Y' ) == $thisyear ) { $calendar_output .= '<td id="today">'; } else { $calendar_output .= '<td>'; } if ( in_array( $day, $daywithpost, true ) ) { // Any posts today? $date_format = gmdate( _x( 'F j, Y', 'daily archives date format' ), strtotime( "{$thisyear}-{$thismonth}-{$day}" ) ); /* translators: Post calendar label. %s: Date. */ $label = sprintf( __( 'Posts published on %s' ), $date_format ); $calendar_output .= sprintf( '<a href="%s" aria-label="%s">%s</a>', get_day_link( $thisyear, $thismonth, $day ), esc_attr( $label ), $day ); } else { $calendar_output .= $day; } $calendar_output .= '</td>'; if ( 6 == calendar_week_mod( (int) gmdate( 'w', mktime( 0, 0, 0, $thismonth, $day, $thisyear ) ) - $week_begins ) ) { $newrow = true; } } $pad = 7 - calendar_week_mod( (int) gmdate( 'w', mktime( 0, 0, 0, $thismonth, $day, $thisyear ) ) - $week_begins ); if ( 0 != $pad && 7 != $pad ) { $calendar_output .= "\n\t\t" . '<td class="pad" colspan="' . esc_attr( $pad ) . '"> </td>'; } $calendar_output .= "\n\t</tr>\n\t</tbody>"; $calendar_output .= "\n\t</table>"; $calendar_output .= '<nav aria-label="' . __( 'Previous and next months' ) . '" class="wp-calendar-nav">'; if ( $previous ) { $calendar_output .= "\n\t\t" . '<span class="wp-calendar-nav-prev"><a href="' . get_month_link( $previous->year, $previous->month ) . '">« ' . $wp_locale->get_month_abbrev( $wp_locale->get_month( $previous->month ) ) . '</a></span>'; } else { $calendar_output .= "\n\t\t" . '<span class="wp-calendar-nav-prev"> </span>'; } $calendar_output .= "\n\t\t" . '<span class="pad"> </span>'; if ( $next ) { $calendar_output .= "\n\t\t" . '<span class="wp-calendar-nav-next"><a href="' . get_month_link( $next->year, $next->month ) . '">' . $wp_locale->get_month_abbrev( $wp_locale->get_month( $next->month ) ) . ' »</a></span>'; } else { $calendar_output .= "\n\t\t" . '<span class="wp-calendar-nav-next"> </span>'; } $calendar_output .= ' </nav>'; $cache[ $key ] = $calendar_output; wp_cache_set( 'get_calendar', $cache, 'calendar' ); /** This filter is documented in wp-includes/general-template.php */ $calendar_output = apply_filters( 'get_calendar', $calendar_output, $args ); if ( $args['display'] ) { echo $calendar_output; return; } return $calendar_output; } }
