You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
112 lines
4.6 KiB
112 lines
4.6 KiB
<?php
|
|
/**
|
|
* @license MIT
|
|
* Copyright 2017 Dustin Wilson, J. King, et al.
|
|
* See LICENSE and AUTHORS files for details
|
|
*/
|
|
|
|
declare(strict_types=1);
|
|
namespace MensBeam\HTML\DOM;
|
|
use MensBeam\Framework\MagicProperties,
|
|
MensBeam\HTML\DOM\InnerNode\Reflection;
|
|
|
|
|
|
trait ChildNode {
|
|
/**
|
|
* Generator which walks backwards through the DOM from the node the method is
|
|
* being run on. Nonstandard.
|
|
*
|
|
* @param ?\Closure $filter An optional callback function used to filter; if not provided the generator will
|
|
* just yield every node.
|
|
* @param bool $includeReferenceNode An optional boolean flag which if true includes the reference node ($this) in
|
|
* the iteration.
|
|
*/
|
|
public function moonwalk(?\Closure $filter = null, bool $includeReferenceNode = false): \Generator {
|
|
$node = $this->parentNode;
|
|
if ($node !== null) {
|
|
do {
|
|
$next = $node->parentNode;
|
|
$result = ($filter === null) ? true : $filter($node);
|
|
// Have to do type checking here because PHP is lacking in advanced typing
|
|
if ($result !== true && $result !== false && $result !== null) {
|
|
$type = gettype($result);
|
|
if ($type === 'object') {
|
|
$type = get_class($result);
|
|
}
|
|
throw new Exception(Exception::RETURN_TYPE_ERROR, 'Closure', '?bool', $type);
|
|
}
|
|
|
|
if ($result === true) {
|
|
yield $node;
|
|
}
|
|
|
|
if ($node instanceof DocumentFragment) {
|
|
$host = Reflection::getProtectedProperty($node, 'host');
|
|
if ($host !== null) {
|
|
$next = $host->get();
|
|
}
|
|
}
|
|
} while ($node = $next);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Generator which walks forwards through an element's siblings. Nonstandard.
|
|
*
|
|
* @param ?\Closure $filter An optional callback function used to filter; if not provided the generator will
|
|
* just yield every node.
|
|
* @param bool $includeReferenceNode An optional boolean flag which if true includes the reference node ($this) in
|
|
* the iteration.
|
|
*/
|
|
public function walkFollowing(?\Closure $filter = null, bool $includeReferenceNode = false): \Generator {
|
|
$node = ($includeReferenceNode) ? $this : $this->nextSibling;
|
|
if ($node !== null) {
|
|
do {
|
|
$next = $node->nextSibling;
|
|
$result = ($filter === null) ? true : $filter($node);
|
|
// Have to do type checking here because PHP is lacking in advanced typing
|
|
if ($result !== true && $result !== false && $result !== null) {
|
|
$type = gettype($result);
|
|
if ($type === 'object') {
|
|
$type = get_class($result);
|
|
}
|
|
throw new Exception(Exception::RETURN_TYPE_ERROR, 'Closure', '?bool', $type);
|
|
}
|
|
|
|
if ($result === true) {
|
|
yield $node;
|
|
}
|
|
} while ($node = $next);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Generator which walks backwards through an element's siblings. Nonstandard.
|
|
*
|
|
* @param ?\Closure $filter An optional callback function used to filter; if not provided the generator will
|
|
* just yield every node.
|
|
* @param bool $includeReferenceNode An optional boolean flag which if true includes the reference node ($this) in
|
|
* the iteration.
|
|
*/
|
|
public function walkPreceding(?\Closure $filter = null, bool $includeReferenceNode = false): \Generator {
|
|
$node = ($includeReferenceNode) ? $this : $this->previousSibling;
|
|
if ($node !== null) {
|
|
do {
|
|
$next = $node->previousSibling;
|
|
$result = ($filter === null) ? true : $filter($node);
|
|
// Have to do type checking here because PHP is lacking in advanced typing
|
|
if ($result !== true && $result !== false && $result !== null) {
|
|
$type = gettype($result);
|
|
if ($type === 'object') {
|
|
$type = get_class($result);
|
|
}
|
|
throw new Exception(Exception::RETURN_TYPE_ERROR, 'Closure', '?bool', $type);
|
|
}
|
|
|
|
if ($result === true) {
|
|
yield $node;
|
|
}
|
|
} while ($node = $next);
|
|
}
|
|
}
|
|
}
|
|
|