<?php
/**
* This file contains the DomNodeClassCapable trait.
*
* PHP Version 5.3
*
* @category DOM
* @package Dom
* @author Gonzalo Chumillas <[email protected]>
* @license https://raw.github.com/soloproyectos/core/master/LICENSE BSD 2-Clause License
* @link https://github.com/soloproyectos/core
*/
namespace com\soloproyectos\common\dom;
/**
* DomNodeClassCapable trait.
*
* @category DOM
* @package Dom
* @author Gonzalo Chumillas <[email protected]>
* @license https://raw.github.com/soloproyectos/core/master/LICENSE BSD 2-Clause License
* @link https://github.com/soloproyectos/core
*/
trait DomNodeClassCapable
{
/**
* List of elements.
*
* @return array of DOMElement
*/
abstract public function elements();
/**
* Adds a class name.
*
* @param string $className Class name
*
* @return DomNode
*/
public function addClass($className)
{
$className = trim($className);
if (strlen($className) > 0) {
foreach ($this->elements() as $element) {
$classes = $this->_getClassMap($element);
if (array_search($className, $classes) === false) {
array_push($classes, $className);
$this->_setClassMap($element, $classes);
}
}
}
return $this;
}
/**
* Removes a class name.
*
* @param string $className Class name
*
* @return DomNode
*/
public function removeClass($className)
{
$className = trim($className);
if (strlen($className) > 0) {
foreach ($this->elements() as $element) {
$classes = $this->_getClassMap($element);
$offset = array_search($className, $classes);
if ($offset !== false) {
array_splice($classes, $offset, 1);
}
$this->_setClassMap($element, $classes);
}
}
return $this;
}
/**
* Has the node a class name?
*
* @param string $className Class name
*
* @return boolean
*/
public function hasClass($className)
{
$className = trim($className);
if (strlen($className) > 0) {
foreach ($this->elements() as $element) {
$classes = $this->_getClassMap($element);
return array_search($className, $classes) !== false;
}
}
return false;
}
/**
* Gets the list of classes.
*
* @param DOMElement $element DOM element
*
* @return array of string
*/
private function _getClassMap($element)
{
$ret = array();
$classAttr = $element->getAttribute("class");
if (strlen($classAttr) > 0) {
$classes = preg_split("/\s+/", $classAttr);
foreach ($classes as $className) {
if (strlen($className) > 0 && array_search($className, $ret) === false) {
array_push($ret, $className);
}
}
}
return $ret;
}
/**
* Sets the list of classes.
*
* @param DOMElement $element DOM element
* @param array $classes List of classes
*
* @return void
*/
private function _setClassMap($element, $classes)
{
$element->removeAttribute("class");
if (count($classes) > 0) {
$element->setAttribute("class", implode(" ", $classes));
}
}
}
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