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<?php
/**
* Comment API: Walker_Comment class
*
* @package WordPress
* @subpackage Comments
* @since 4.4.0
*/
/**
* Core walker class used to create an HTML list of comments.
*
* @since 2.7.0
*
* @see Walker
*/
class Walker_Comment extends Walker {
/**
* What the class handles.
*
* @since 2.7.0
* @var string
*
* @see Walker::$tree_type
*/
public $tree_type = 'comment';
/**
* Database fields to use.
*
* @since 2.7.0
* @var string[]
*
* @see Walker::$db_fields
* @todo Decouple this
*/
public $db_fields = array(
'parent' => 'comment_parent',
'id' => 'comment_ID',
);
/**
* Starts the list before the elements are added.
*
* @since 2.7.0
*
* @see Walker::start_lvl()
* @global int $comment_depth
*
* @param string $output Used to append additional content (passed by reference).
* @param int $depth Optional. Depth of the current comment. Default 0.
* @param array $args Optional. Uses 'style' argument for type of HTML list. Default empty array.
*/
public function start_lvl( &$output, $depth = 0, $args = array() ) {
$GLOBALS['comment_depth'] = $depth + 1;
switch ( $args['style'] ) {
case 'div':
break;
case 'ol':
$output .= '<ol class="children">' . "\n";
break;
case 'ul':
default:
$output .= '<ul class="children">' . "\n";
break;
}
}
/**
* Ends the list of items after the elements are added.
*
* @since 2.7.0
*
* @see Walker::end_lvl()
* @global int $comment_depth
*
* @param string $output Used to append additional content (passed by reference).
* @param int $depth Optional. Depth of the current comment. Default 0.
* @param array $args Optional. Will only append content if style argument value is 'ol' or 'ul'.
* Default empty array.
*/
public function end_lvl( &$output, $depth = 0, $args = array() ) {
$GLOBALS['comment_depth'] = $depth + 1;
switch ( $args['style'] ) {
case 'div':
break;
case 'ol':
$output .= "</ol><!-- .children -->\n";
break;
case 'ul':
default:
$output .= "</ul><!-- .children -->\n";
break;
}
}
/**
* Traverses elements to create list from elements.
*
* This function is designed to enhance Walker::display_element() to
* display children of higher nesting levels than selected inline on
* the highest depth level displayed. This prevents them being orphaned
* at the end of the comment list.
*
* Example: max_depth = 2, with 5 levels of nested content.
* 1
* 1.1
* 1.1.1
* 1.1.1.1
* 1.1.1.1.1
* 1.1.2
* 1.1.2.1
* 2
* 2.2
*
* @since 2.7.0
*
* @see Walker::display_element()
* @see wp_list_comments()
*
* @param WP_Comment $element Comment data object.
* @param array $children_elements List of elements to continue traversing. Passed by reference.
* @param int $max_depth Max depth to traverse.
* @param int $depth Depth of the current element.
* @param array $args An array of arguments.
* @param string $output Used to append additional content. Passed by reference.
*/
public function display_element( $element, &$children_elements, $max_depth, $depth, $args, &$output ) {
if ( ! $element ) {
return;
}
$id_field = $this->db_fields['id'];
$id = $element->$id_field;
parent::display_element( $element, $children_elements, $max_depth, $depth, $args, $output );
/*
* If at the max depth, and the current element still has children, loop over those
* and display them at this level. This is to prevent them being orphaned to the end
* of the list.
*/
if ( $max_depth <= $depth + 1 && isset( $children_elements[ $id ] ) ) {
foreach ( $children_elements[ $id ] as $child ) {
$this->display_element( $child, $children_elements, $max_depth, $depth, $args, $output );
}
unset( $children_elements[ $id ] );
}
}
/**
* Starts the element output.
*
* @since 2.7.0
* @since 5.9.0 Renamed `$comment` to `$data_object` and `$id` to `$current_object_id`
* to match parent class for PHP 8 named parameter support.
*
* @see Walker::start_el()
* @see wp_list_comments()
* @global int $comment_depth
* @global WP_Comment $comment Global comment object.
*
* @param string $output Used to append additional content. Passed by reference.
* @param WP_Comment $data_object Comment data object.
* @param int $depth Optional. Depth of the current comment in reference to parents. Default 0.
* @param array $args Optional. An array of arguments. Default empty array.
* @param int $current_object_id Optional. ID of the current comment. Default 0.
*/
public function start_el( &$output, $data_object, $depth = 0, $args = array(), $current_object_id = 0 ) {
// Restores the more descriptive, specific name for use within this method.
$comment = $data_object;
++$depth;
$GLOBALS['comment_depth'] = $depth;
$GLOBALS['comment'] = $comment;
if ( ! empty( $args['callback'] ) ) {
ob_start();
call_user_func( $args['callback'], $comment, $args, $depth );
$output .= ob_get_clean();
return;
}
if ( 'comment' === $comment->comment_type ) {
add_filter( 'comment_text', array( $this, 'filter_comment_text' ), 40, 2 );
}
if ( ( 'pingback' === $comment->comment_type || 'trackback' === $comment->comment_type ) && $args['short_ping'] ) {
ob_start();
$this->ping( $comment, $depth, $args );
$output .= ob_get_clean();
} elseif ( 'html5' === $args['format'] ) {
ob_start();
$this->html5_comment( $comment, $depth, $args );
$output .= ob_get_clean();
} else {
ob_start();
$this->comment( $comment, $depth, $args );
$output .= ob_get_clean();
}
if ( 'comment' === $comment->comment_type ) {
remove_filter( 'comment_text', array( $this, 'filter_comment_text' ), 40 );
}
}
/**
* Ends the element output, if needed.
*
* @since 2.7.0
* @since 5.9.0 Renamed `$comment` to `$data_object` to match parent class for PHP 8 named parameter support.
*
* @see Walker::end_el()
* @see wp_list_comments()
*
* @param string $output Used to append additional content. Passed by reference.
* @param WP_Comment $data_object Comment data object.
* @param int $depth Optional. Depth of the current comment. Default 0.
* @param array $args Optional. An array of arguments. Default empty array.
*/
public function end_el( &$output, $data_object, $depth = 0, $args = array() ) {
if ( ! empty( $args['end-callback'] ) ) {
ob_start();
call_user_func(
$args['end-callback'],
$data_object, // The current comment object.
$args,
$depth
);
$output .= ob_get_clean();
return;
}
if ( 'div' === $args['style'] ) {
$output .= "</div><!-- #comment-## -->\n";
} else {
$output .= "</li><!-- #comment-## -->\n";
}
}
/**
* Outputs a pingback comment.
*
* @since 3.6.0
*
* @see wp_list_comments()
*
* @param WP_Comment $comment The comment object.
* @param int $depth Depth of the current comment.
* @param array $args An array of arguments.
*/
protected function ping( $comment, $depth, $args ) {
$tag = ( 'div' === $args['style'] ) ? 'div' : 'li';
?>
<<?php echo $tag; ?> id="comment-<?php comment_ID(); ?>" <?php comment_class( '', $comment ); ?>>
<div class="comment-body">
<?php _e( 'Pingback:' ); ?> <?php comment_author_link( $comment ); ?> <?php edit_comment_link( __( 'Edit' ), '<span class="edit-link">', '</span>' ); ?>
</div>
<?php
}
/**
* Filters the comment text.
*
* Removes links from the pending comment's text if the commenter did not consent
* to the comment cookies.
*
* @since 5.4.2
*
* @param string $comment_text Text of the current comment.
* @param WP_Comment|null $comment The comment object. Null if not found.
* @return string Filtered text of the current comment.
*/
public function filter_comment_text( $comment_text, $comment ) {
$commenter = wp_get_current_commenter();
$show_pending_links = ! empty( $commenter['comment_author'] );
if ( $comment && '0' === $comment->comment_approved && ! $show_pending_links ) {
$comment_text = wp_kses( $comment_text, array() );
}
return $comment_text;
}
/**
* Outputs a single comment.
*
* @since 3.6.0
*
* @see wp_list_comments()
*
* @param WP_Comment $comment Comment to display.
* @param int $depth Depth of the current comment.
* @param array $args An array of arguments.
*/
protected function comment( $comment, $depth, $args ) {
if ( 'div' === $args['style'] ) {
$tag = 'div';
$add_below = 'comment';
} else {
$tag = 'li';
$add_below = 'div-comment';
}
$commenter = wp_get_current_commenter();
$show_pending_links = isset( $commenter['comment_author'] ) && $commenter['comment_author'];
if ( $commenter['comment_author_email'] ) {
$moderation_note = __( 'Your comment is awaiting moderation.' );
} else {
$moderation_note = __( 'Your comment is awaiting moderation. This is a preview; your comment will be visible after it has been approved.' );
}
?>
<<?php echo $tag; ?> <?php comment_class( $this->has_children ? 'parent' : '', $comment ); ?> id="comment-<?php comment_ID(); ?>">
<?php if ( 'div' !== $args['style'] ) : ?>
<div id="div-comment-<?php comment_ID(); ?>" class="comment-body">
<?php endif; ?>
<div class="comment-author vcard">
<?php
if ( 0 !== $args['avatar_size'] ) {
echo get_avatar( $comment, $args['avatar_size'] );
}
?>
<?php
$comment_author = get_comment_author_link( $comment );
if ( '0' === $comment->comment_approved && ! $show_pending_links ) {
$comment_author = get_comment_author( $comment );
}
printf(
/* translators: %s: Comment author link. */
__( '%s <span class="says">says:</span>' ),
sprintf( '<cite class="fn">%s</cite>', $comment_author )
);
?>
</div>
<?php if ( '0' === $comment->comment_approved ) : ?>
<em class="comment-awaiting-moderation"><?php echo $moderation_note; ?></em>
<br />
<?php endif; ?>
<div class="comment-meta commentmetadata">
<?php
printf(
'<a href="%s">%s</a>',
esc_url( get_comment_link( $comment, $args ) ),
sprintf(
/* translators: 1: Comment date, 2: Comment time. */
__( '%1$s at %2$s' ),
get_comment_date( '', $comment ),
get_comment_time()
)
);
edit_comment_link( __( '(Edit)' ), ' ', '' );
?>
</div>
<?php
comment_text(
$comment,
array_merge(
$args,
array(
'add_below' => $add_below,
'depth' => $depth,
'max_depth' => $args['max_depth'],
)
)
);
?>
<?php
comment_reply_link(
array_merge(
$args,
array(
'add_below' => $add_below,
'depth' => $depth,
'max_depth' => $args['max_depth'],
'before' => '<div class="reply">',
'after' => '</div>',
)
)
);
?>
<?php if ( 'div' !== $args['style'] ) : ?>
</div>
<?php endif; ?>
<?php
}
/**
* Outputs a comment in the HTML5 format.
*
* @since 3.6.0
*
* @see wp_list_comments()
*
* @param WP_Comment $comment Comment to display.
* @param int $depth Depth of the current comment.
* @param array $args An array of arguments.
*/
protected function html5_comment( $comment, $depth, $args ) {
$tag = ( 'div' === $args['style'] ) ? 'div' : 'li';
$commenter = wp_get_current_commenter();
$show_pending_links = ! empty( $commenter['comment_author'] );
if ( $commenter['comment_author_email'] ) {
$moderation_note = __( 'Your comment is awaiting moderation.' );
} else {
$moderation_note = __( 'Your comment is awaiting moderation. This is a preview; your comment will be visible after it has been approved.' );
}
?>
<<?php echo $tag; ?> id="comment-<?php comment_ID(); ?>" <?php comment_class( $this->has_children ? 'parent' : '', $comment ); ?>>
<article id="div-comment-<?php comment_ID(); ?>" class="comment-body">
<footer class="comment-meta">
<div class="comment-author vcard">
<?php
if ( 0 !== $args['avatar_size'] ) {
echo get_avatar( $comment, $args['avatar_size'] );
}
?>
<?php
$comment_author = get_comment_author_link( $comment );
if ( '0' === $comment->comment_approved && ! $show_pending_links ) {
$comment_author = get_comment_author( $comment );
}
printf(
/* translators: %s: Comment author link. */
__( '%s <span class="says">says:</span>' ),
sprintf( '<b class="fn">%s</b>', $comment_author )
);
?>
</div><!-- .comment-author -->
<div class="comment-metadata">
<?php
printf(
'<a href="%s"><time datetime="%s">%s</time></a>',
esc_url( get_comment_link( $comment, $args ) ),
get_comment_time( 'c' ),
sprintf(
/* translators: 1: Comment date, 2: Comment time. */
__( '%1$s at %2$s' ),
get_comment_date( '', $comment ),
get_comment_time()
)
);
edit_comment_link( __( 'Edit' ), ' <span class="edit-link">', '</span>' );
?>
</div><!-- .comment-metadata -->
<?php if ( '0' === $comment->comment_approved ) : ?>
<em class="comment-awaiting-moderation"><?php echo $moderation_note; ?></em>
<?php endif; ?>
</footer><!-- .comment-meta -->
<div class="comment-content">
<?php comment_text(); ?>
</div><!-- .comment-content -->
<?php
if ( '1' === $comment->comment_approved || $show_pending_links ) {
comment_reply_link(
array_merge(
$args,
array(
'add_below' => 'div-comment',
'depth' => $depth,
'max_depth' => $args['max_depth'],
'before' => '<div class="reply">',
'after' => '</div>',
)
)
);
}
?>
</article><!-- .comment-body -->
<?php
}
}