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<?php
/**
* Comment API: Walker_Comment class
*
* @package WordPress
* @subpackage Comments
* @since 4.4.0
*/
/**
* HTML comment list class.
*
* @uses Walker
* @since 2.7.0
*/
class Walker_Comment extends Walker {
/**
* What the class handles.
*
* @see Walker::$tree_type
*
* @since 2.7.0
* @var string
*/
public $tree_type = 'comment';
/**
* DB fields to use.
*
* @see Walker::$db_fields
*
* @since 2.7.0
* @var array
*/
public $db_fields = array ('parent' => 'comment_parent', 'id' => 'comment_ID');
/**
* Start the list before the elements are added.
*
* @see Walker::start_lvl()
*
* @since 2.7.0
*
* @global int $comment_depth
*
* @param string $output Passed by reference. Used to append additional content.
* @param int $depth Depth of comment.
* @param array $args Uses 'style' argument for type of HTML list.
*/
public function start_lvl( &$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;
}
}
/**
* End the list of items after the elements are added.
*
* @see Walker::end_lvl()
*
* @since 2.7.0
*
* @global int $comment_depth
*
* @param string $output Passed by reference. Used to append additional content.
* @param int $depth Depth of comment.
* @param array $args Will only append content if style argument value is 'ol' or 'ul'.
*/
public function end_lvl( &$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;
}
}
/**
* Traverse 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
*
* @see Walker::display_element()
* @see wp_list_comments()
*
* @since 2.7.0
*
* @param object $element Data object.
* @param array $children_elements List of elements to continue traversing.
* @param int $max_depth Max depth to traverse.
* @param int $depth Depth of current element.
* @param array $args An array of arguments.
* @param string $output Passed by reference. Used to append additional content.
*/
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 we're 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 ] );
}
}
/**
* Start the element output.
*
* @since 2.7.0
*
* @see Walker::start_el()
* @see wp_list_comments()
*
* @global int $comment_depth
* @global WP_Comment $comment
*
* @param string $output Passed by reference. Used to append additional content.
* @param object $comment Comment data object.
* @param int $depth Depth of comment in reference to parents.
* @param array $args An array of arguments.
*/
public function start_el( &$output, $comment, $depth = 0, $args = array(), $id = 0 ) {
$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 ( ( '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();
}
}
/**
* Ends the element output, if needed.
*
* @since 2.7.0
*
* @see Walker::end_el()
* @see wp_list_comments()
*
* @param string $output Passed by reference. Used to append additional content.
* @param WP_Comment $comment The comment object. Default current comment.
* @param int $depth Depth of comment.
* @param array $args An array of arguments.
*/
public function end_el( &$output, $comment, $depth = 0, $args = array() ) {
if ( !empty( $args['end-callback'] ) ) {
ob_start();
call_user_func( $args['end-callback'], $comment, $args, $depth );
$output .= ob_get_clean();
return;
}
if ( 'div' == $args['style'] )
$output .= "</div><!-- #comment-## -->\n";
else
$output .= "</li><!-- #comment-## -->\n";
}
/**
* Output a pingback comment.
*
* @access protected
* @since 3.6.0
*
* @see wp_list_comments()
*
* @param WP_Comment $comment The comment object.
* @param int $depth Depth of 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
}
/**
* Output a single comment.
*
* @access protected
* @since 3.6.0
*
* @see wp_list_comments()
*
* @param object $comment Comment to display.
* @param int $depth Depth of 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';
}
?>
<<?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 printf( __( '<cite class="fn">%s</cite> <span class="says">says:</span>' ), get_comment_author_link( $comment ) ); ?>
</div>
<?php if ( '0' == $comment->comment_approved ) : ?>
<em class="comment-awaiting-moderation"><?php _e( 'Your comment is awaiting moderation.' ) ?></em>
<br />
<?php endif; ?>
<div class="comment-meta commentmetadata"><a href="<?php echo esc_url( get_comment_link( $comment, $args ) ); ?>">
<?php
/* translators: 1: comment date, 2: comment time */
printf( __( '%1$s at %2$s' ), get_comment_date( '', $comment ), get_comment_time() ); ?></a><?php edit_comment_link( __( '(Edit)' ), ' ', '' );
?>
</div>
<?php comment_text( get_comment_id(), 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
}
/**
* Output a comment in the HTML5 format.
*
* @access protected
* @since 3.6.0
*
* @see wp_list_comments()
*
* @param object $comment Comment to display.
* @param int $depth Depth of comment.
* @param array $args An array of arguments.
*/
protected function html5_comment( $comment, $depth, $args ) {
$tag = ( 'div' === $args['style'] ) ? 'div' : 'li';
?>
<<?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 printf( __( '%s <span class="says">says:</span>' ), sprintf( '<b class="fn">%s</b>', get_comment_author_link( $comment ) ) ); ?>
</div><!-- .comment-author -->
<div class="comment-metadata">
<a href="<?php echo esc_url( get_comment_link( $comment, $args ) ); ?>">
<time datetime="<?php comment_time( 'c' ); ?>">
<?php
/* translators: 1: comment date, 2: comment time */
printf( __( '%1$s at %2$s' ), get_comment_date( '', $comment ), get_comment_time() );
?>
</time>
</a>
<?php edit_comment_link( __( 'Edit' ), '<span class="edit-link">', '</span>' ); ?>
</div><!-- .comment-metadata -->
<?php if ( '0' == $comment->comment_approved ) : ?>
<p class="comment-awaiting-moderation"><?php _e( 'Your comment is awaiting moderation.' ); ?></p>
<?php endif; ?>
</footer><!-- .comment-meta -->
<div class="comment-content">
<?php comment_text(); ?>
</div><!-- .comment-content -->
<?php
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
}
}
