$major_rule ) {
if ( ! $major_rule )
continue;
$conditions['rules'][] = array(
'major' => $major_rule,
'minor' => isset( $_POST['conditions']['rules_minor'][$index] ) ? $_POST['conditions']['rules_minor'][$index] : ''
);
}
if ( ! empty( $conditions['rules'] ) )
$instance['conditions'] = $conditions;
else
unset( $instance['conditions'] );
if (
( isset( $instance['conditions'] ) && ! isset( $old_instance['conditions'] ) )
||
(
isset( $instance['conditions'], $old_instance['conditions'] )
&&
serialize( $instance['conditions'] ) != serialize( $old_instance['conditions'] )
)
) {
do_action( 'widget_conditions_save' );
}
else if ( ! isset( $instance['conditions'] ) && isset( $old_instance['conditions'] ) ) {
do_action( 'widget_conditions_delete' );
}
return $instance;
}
/**
* Filter the list of widgets for a sidebar so that active sidebars work as expected.
*
* @param array $widget_areas An array of widget areas and their widgets.
* @return array The modified $widget_area array.
*/
public static function sidebars_widgets( $widget_areas ) {
$settings = array();
foreach ( $widget_areas as $widget_area => $widgets ) {
if ( empty( $widgets ) )
continue;
if ( 'wp_inactive_widgets' == $widget_area )
continue;
foreach ( $widgets as $position => $widget_id ) {
// Find the conditions for this widget.
if ( preg_match( '/^(.+?)-(\d+)$/', $widget_id, $matches ) ) {
$id_base = $matches[1];
$widget_number = intval( $matches[2] );
}
else {
$id_base = $widget_id;
$widget_number = null;
}
if ( ! isset( $settings[$id_base] ) ) {
$settings[$id_base] = get_option( 'widget_' . $id_base );
}
// New multi widget (WP_Widget)
if ( ! is_null( $widget_number ) ) {
if ( isset( $settings[$id_base][$widget_number] ) && false === self::filter_widget( $settings[$id_base][$widget_number] ) ) {
unset( $widget_areas[$widget_area][$position] );
}
}
// Old single widget
else if ( ! empty( $settings[ $id_base ] ) && false === self::filter_widget( $settings[$id_base] ) ) {
unset( $widget_areas[$widget_area][$position] );
}
}
}
return $widget_areas;
}
/**
* Determine whether the widget should be displayed based on conditions set by the user.
*
* @param array $instance The widget settings.
* @return array Settings to display or bool false to hide.
*/
public static function filter_widget( $instance ) {
global $post, $wp_query;
if ( empty( $instance['conditions'] ) || empty( $instance['conditions']['rules'] ) )
return $instance;
$condition_result = false;
foreach ( $instance['conditions']['rules'] as $rule ) {
switch ( $rule['major'] ) {
case 'date':
switch ( $rule['minor'] ) {
case '':
$condition_result = is_date();
break;
case 'month':
$condition_result = is_month();
break;
case 'day':
$condition_result = is_day();
break;
case 'year':
$condition_result = is_year();
break;
}
break;
case 'page':
// Previously hardcoded post type options.
if ( 'post' == $rule['minor'] )
$rule['minor'] = 'post_type-post';
else if ( ! $rule['minor'] )
$rule['minor'] = 'post_type-page';
switch ( $rule['minor'] ) {
case '404':
$condition_result = is_404();
break;
case 'search':
$condition_result = is_search();
break;
case 'archive':
$condition_result = is_archive();
break;
case 'posts':
$condition_result = $wp_query->is_posts_page;
break;
case 'home':
$condition_result = is_home();
break;
case 'front':
if ( current_theme_supports( 'infinite-scroll' ) )
$condition_result = is_front_page();
else {
$condition_result = is_front_page() && !is_paged();
}
break;
default:
if ( substr( $rule['minor'], 0, 10 ) == 'post_type-' )
$condition_result = is_singular( substr( $rule['minor'], 10 ) );
else {
// $rule['minor'] is a page ID -- check if we're either looking at that particular page itself OR looking at the posts page, with the correct conditions
$condition_result = ( is_page( $rule['minor'] ) || ( get_option( 'show_on_front' ) == 'page' && $wp_query->is_posts_page && get_option( 'page_for_posts' ) == $rule['minor'] ) );
}
break;
}
break;
case 'tag':
if ( ! $rule['minor'] && is_tag() )
$condition_result = true;
else if ( is_singular() && $rule['minor'] && has_tag( $rule['minor'] ) )
$condition_result = true;
else {
$tag = get_tag( $rule['minor'] );
if ( $tag && is_tag( $tag->slug ) )
$condition_result = true;
}
break;
case 'category':
if ( ! $rule['minor'] && is_category() )
$condition_result = true;
else if ( is_category( $rule['minor'] ) )
$condition_result = true;
else if ( is_singular() && $rule['minor'] && has_category( $rule['minor'] ) )
$condition_result = true;
break;
case 'author':
if ( ! $rule['minor'] && is_author() )
$condition_result = true;
else if ( $rule['minor'] && is_author( $rule['minor'] ) )
$condition_result = true;
else if ( is_singular() && $rule['minor'] && $rule['minor'] == $post->post_author )
$condition_result = true;
break;
case 'taxonomy':
$term = explode( '_tax_', $rule['minor'] ); // $term[0] = taxonomy name; $term[1] = term id
$terms = get_the_terms( $post->ID, $rule['minor'] ); // Does post have terms in taxonomy?
if ( is_tax( $term[0], $term[1] ) )
$condition_result = true;
else if ( is_singular() && $term[1] && has_term( $term[1], $term[0] ) )
$condition_result = true;
else if ( is_singular() && $terms & !is_wp_error( $terms ) )
$condition_result = true;
break;
}
if ( $condition_result )
break;
}
if ( ( 'show' == $instance['conditions']['action'] && ! $condition_result ) || ( 'hide' == $instance['conditions']['action'] && $condition_result ) )
return false;
return $instance;
}
public static function strcasecmp_name( $a, $b ) {
return strcasecmp( $a->name, $b->name );
}
}
add_action( 'init', array( 'Jetpack_Widget_Conditions', 'init' ) );