Source

File: wp-admin/includes/class-wp-users-list-table.php

public function single_row( $user_object, $style = '', $role = '', $numposts = 0 ) {
		if ( ! ( $user_object instanceof WP_User ) ) {
			$user_object = get_userdata( (int) $user_object );
		}
		$user_object->filter = 'display';
		$email               = $user_object->user_email;

		if ( $this->is_site_users ) {
			$url = "site-users.php?id={$this->site_id}&";
		} else {
			$url = 'users.php?';
		}

		$user_roles = $this->get_role_list( $user_object );

		// Set up the hover actions for this user.
		$actions     = array();
		$checkbox    = '';
		$super_admin = '';

		if ( is_multisite() && current_user_can( 'manage_network_users' ) ) {
			if ( in_array( $user_object->user_login, get_super_admins(), true ) ) {
				$super_admin = ' — ' . __( 'Super Admin' );
			}
		}

		// Check if the user for this row is editable.
		if ( current_user_can( 'list_users' ) ) {
			// Set up the user editing link.
			$edit_link = esc_url( add_query_arg( 'wp_http_referer', urlencode( wp_unslash( $_SERVER['REQUEST_URI'] ) ), get_edit_user_link( $user_object->ID ) ) );

			if ( current_user_can( 'edit_user', $user_object->ID ) ) {
				$edit            = "<strong><a href=\"{$edit_link}\">{$user_object->user_login}</a>{$super_admin}</strong><br />";
				$actions['edit'] = '<a href="' . $edit_link . '">' . __( 'Edit' ) . '</a>';
			} else {
				$edit = "<strong>{$user_object->user_login}{$super_admin}</strong><br />";
			}

			if ( ! is_multisite() && get_current_user_id() != $user_object->ID && current_user_can( 'delete_user', $user_object->ID ) ) {
				$actions['delete'] = "<a class='submitdelete' href='" . wp_nonce_url( "users.php?action=delete&amp;user=$user_object->ID", 'bulk-users' ) . "'>" . __( 'Delete' ) . '</a>';
			}
			if ( is_multisite() && current_user_can( 'remove_user', $user_object->ID ) ) {
				$actions['remove'] = "<a class='submitdelete' href='" . wp_nonce_url( $url . "action=remove&amp;user=$user_object->ID", 'bulk-users' ) . "'>" . __( 'Remove' ) . '</a>';
			}

			// Add a link to the user's author archive, if not empty.
			$author_posts_url = get_author_posts_url( $user_object->ID );
			if ( $author_posts_url ) {
				$actions['view'] = sprintf(
					'<a href="%s" aria-label="%s">%s</a>',
					esc_url( $author_posts_url ),
					/* translators: %s: Author's display name. */
					esc_attr( sprintf( __( 'View posts by %s' ), $user_object->display_name ) ),
					__( 'View' )
				);
			}

			/**
			 * Filters the action links displayed under each user in the Users list table.
			 *
			 * @since 2.8.0
			 *
			 * @param string[] $actions     An array of action links to be displayed.
			 *                              Default 'Edit', 'Delete' for single site, and
			 *                              'Edit', 'Remove' for Multisite.
			 * @param WP_User  $user_object WP_User object for the currently listed user.
			 */
			$actions = apply_filters( 'user_row_actions', $actions, $user_object );

			// Role classes.
			$role_classes = esc_attr( implode( ' ', array_keys( $user_roles ) ) );

			// Set up the checkbox (because the user is editable, otherwise it's empty).
			$checkbox = sprintf(
				'<label class="screen-reader-text" for="user_%1$s">%2$s</label>' .
				'<input type="checkbox" name="users[]" id="user_%1$s" class="%3$s" value="%1$s" />',
				$user_object->ID,
				/* translators: %s: User login. */
				sprintf( __( 'Select %s' ), $user_object->user_login ),
				$role_classes
			);

		} else {
			$edit = "<strong>{$user_object->user_login}{$super_admin}</strong>";
		}

		$avatar = get_avatar( $user_object->ID, 32 );

		// Comma-separated list of user roles.
		$roles_list = implode( ', ', $user_roles );

		$r = "<tr id='user-$user_object->ID'>";

		list( $columns, $hidden, $sortable, $primary ) = $this->get_column_info();

		foreach ( $columns as $column_name => $column_display_name ) {
			$classes = "$column_name column-$column_name";
			if ( $primary === $column_name ) {
				$classes .= ' has-row-actions column-primary';
			}
			if ( 'posts' === $column_name ) {
				$classes .= ' num'; // Special case for that column.
			}

			if ( in_array( $column_name, $hidden, true ) ) {
				$classes .= ' hidden';
			}

			$data = 'data-colname="' . wp_strip_all_tags( $column_display_name ) . '"';

			$attributes = "class='$classes' $data";

			if ( 'cb' === $column_name ) {
				$r .= "<th scope='row' class='check-column'>$checkbox</th>";
			} else {
				$r .= "<td $attributes>";
				switch ( $column_name ) {
					case 'username':
						$r .= "$avatar $edit";
						break;
					case 'name':
						if ( $user_object->first_name && $user_object->last_name ) {
							$r .= "$user_object->first_name $user_object->last_name";
						} elseif ( $user_object->first_name ) {
							$r .= $user_object->first_name;
						} elseif ( $user_object->last_name ) {
							$r .= $user_object->last_name;
						} else {
							$r .= sprintf(
								'<span aria-hidden="true">&#8212;</span><span class="screen-reader-text">%s</span>',
								_x( 'Unknown', 'name' )
							);
						}
						break;
					case 'email':
						$r .= "<a href='" . esc_url( "mailto:$email" ) . "'>$email</a>";
						break;
					case 'role':
						$r .= esc_html( $roles_list );
						break;
					case 'posts':
						if ( $numposts > 0 ) {
							$r .= sprintf(
								'<a href="%s" class="edit"><span aria-hidden="true">%s</span><span class="screen-reader-text">%s</span></a>',
								"edit.php?author={$user_object->ID}",
								$numposts,
								sprintf(
									/* translators: %s: Number of posts. */
									_n( '%s post by this author', '%s posts by this author', $numposts ),
									number_format_i18n( $numposts )
								)
							);
						} else {
							$r .= 0;
						}
						break;
					default:
						/**
						 * Filters the display output of custom columns in the Users list table.
						 *
						 * @since 2.8.0
						 *
						 * @param string $output      Custom column output. Default empty.
						 * @param string $column_name Column name.
						 * @param int    $user_id     ID of the currently-listed user.
						 */
						$r .= apply_filters( 'manage_users_custom_column', '', $column_name, $user_object->ID );
				}

				if ( $primary === $column_name ) {
					$r .= $this->row_actions( $actions );
				}
				$r .= '</td>';
			}
		}
		$r .= '</tr>';

		return $r;
	}