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<?php
/**
* @package Warp Theme Framework
* @author YOOtheme http://www.yootheme.com
* @copyright Copyright (C) YOOtheme GmbH
* @license http://www.gnu.org/licenses/gpl.html GNU/GPL
*/
namespace Warp\Dom;
/**
* DOM element class with extended attributes and functions.
*/
class Element extends \DOMElement
{
public function first($query)
{
if ($matches = $this->find($query)) {
if ($matches->length) {
return $matches->item(0);
}
}
return null;
}
public function find($query)
{
return $this->query(CssSelector::toXPath($query, 'descendant::'));
}
public function query($expression)
{
return $this->ownerDocument->xpath()->query($expression, $this);
}
public function parent()
{
return $this->parentNode;
}
public function next()
{
$sibling = $this->nextSibling;
do {
if ($sibling->nodeType == XML_ELEMENT_NODE) {
break;
}
} while ($sibling = $sibling->nextSibling);
return $sibling;
}
public function prev()
{
$sibling = $this->previousSibling;
do {
if ($sibling->nodeType == XML_ELEMENT_NODE) {
break;
}
} while ($sibling = $sibling->previousSibling);
return $sibling;
}
public function hasChildren()
{
return $this->hasChildNodes();
}
public function children($query = null)
{
$children = array();
if (!$this->hasChildren()) {
return $children;
}
if ($query == null) {
foreach ($this->childNodes as $child) {
if ($child->nodeType == XML_ELEMENT_NODE) {
$children[] = $child;
}
}
return $children;
}
return $this->query(CssSelector::toXPath($query, 'child::'));
}
public function removeChildren()
{
while ($child = $this->firstChild) {
$this->removeChild($child);
}
return $this;
}
public function before($data)
{
$data = $this->prepareInsert($data);
$this->parentNode->insertBefore($data, $this);
return $this;
}
public function after($data)
{
$data = $this->prepareInsert($data);
if (isset($this->nextSibling)) {
$this->parentNode->insertBefore($data, $this->nextSibling);
} else {
$this->parentNode->appendChild($data);
}
return $this;
}
public function prepend($data)
{
$data = $this->prepareInsert($data);
if (isset($data)) {
if ($this->hasChildren()) {
$this->insertBefore($data, $this->firstChild);
} else {
$this->appendChild($data);
}
}
return $this;
}
public function append($data)
{
$data = $this->prepareInsert($data);
if (isset($data)) {
$this->appendChild($data);
}
return $this;
}
public function replaceWith($data)
{
$data = $this->prepareInsert($data);
if (isset($data)) {
$this->parent()->replaceChild($data, $this);
}
return $data;
}
public function wrap($data)
{
$data = $this->prepareInsert($data);
if (empty($data)) {
return $this;
}
self::wrapNode($this, $data);
return $this;
}
public function text($text = null)
{
if (isset($text)) {
$this->removeChildren();
$this->appendChild($this->ownerDocument->createTextNode($text));
return $this;
}
return $this->textContent;
}
public function html($markup = null)
{
if (isset($markup)) {
$this->removeChildren();
$this->append($markup);
return $this;
}
// fix selfclosing tags
if (false !== $html = $this->ownerDocument->saveXML($this)) {
$html = preg_replace('#(<(div|span|i)(\s[^>]*)?)/>#i', '$1></$2>', $html);
}
return $html;
}
public function tag()
{
return $this->tagName;
}
public function val($value = null)
{
if (isset($value)) {
return $this->attr('value', $value);
}
return $this->attr('value');
}
public function hasClass($class)
{
return self::attrClass('has', $this, $class);
}
public function addClass($class)
{
return self::attrClass('add', $this, $class);
}
public function removeClass($class)
{
return self::attrClass('remove', $this, $class);
}
public function toggleClass($class)
{
return self::attrClass('toggle', $this, $class);
}
public function attr($name = null, $value = null)
{
if (is_null($name)) {
$attributes = array();
foreach ($this->attributes as $name => $node) {
$attributes[$name] = $node->value;
}
return $attributes;
}
if (isset($value)) {
$this->setAttribute($name, $value);
return $this;
}
return $this->getAttribute($name);
}
public function removeAttr($name)
{
$this->removeAttribute($name);
return $this;
}
protected function prepareInsert($item)
{
if (empty($item)) {
return;
}
if (is_string($item)) {
$item = Entities::replaceAllEntities($item);
$frag = $this->ownerDocument->createDocumentFragment();
try {
$frag->appendXML($item);
} catch (Exception $e) {}
return $frag;
}
if ($item instanceof \DOMNode) {
if ($item->ownerDocument !== $this->ownerDocument) {
return $this->ownerDocument->importNode($item, true);
}
return $item;
}
}
protected static function wrapNode(\DOMNode $node, \DOMNode $wrapper)
{
if ($wrapper->hasChildNodes()) {
$deepest = self::deepestNode($wrapper);
$wrapper = $deepest[0];
}
$parent = $node->parentNode;
$parent->insertBefore($wrapper, $node);
$wrapper->appendChild($parent->removeChild($node));
}
protected static function deepestNode(\DOMNode $node, $depth = 0, $current = null, &$deepest = null)
{
if (!isset($current)) $current = array($node);
if (!isset($deepest)) $deepest = $depth;
if ($node->hasChildNodes()) {
foreach ($node->childNodes as $child) {
if ($child->nodeType === XML_ELEMENT_NODE) {
$current = self::deepestNode($child, $depth + 1, $current, $deepest);
}
}
} elseif ($depth > $deepest) {
$current = array($node);
$deepest = $depth;
} elseif ($depth === $deepest) {
$current[] = $node;
}
return $current;
}
protected static function attrClass($action, \DOMNode $node, $class)
{
$classes = $node->getAttribute('class');
$found = stripos($classes, $class) !== false && in_array(strtolower($class), explode(' ', strtolower($classes)));
if ($action == 'has') {
return $found;
}
if ($action == 'toggle') {
$action = $found ? 'remove' : 'add';
}
if ($action == 'add' && !$found) {
$node->setAttribute('class', trim(preg_replace('/\s{2,}/i', ' ', $classes.' '.$class)));
}
if ($action == 'remove' && $found) {
$classes = trim(preg_replace('/\s{2,}/i', ' ', preg_replace('/(^|\s)'.preg_quote($class, '/').'(?:\s|$)/i', ' ', $classes)));
if ($classes !== '') {
$node->setAttribute('class', $classes);
} else {
$node->removeAttribute('class');
}
}
return $node;
}
}