public function testCanAddItemsAndUseAccessors()
{
$firstNode = new XPathDocument_Dom_Text($this->_xpath->query('//p[@class="title"]/a/text()')->item(0));
$secondNode = new XPathDocument_Dom_Element($this->_xpath->query('//p[@class="title"]/a')->item(1));
$thirdNode = new XPathDocument_Dom_Attr($this->_xpath->query('//p[@class="title"]/a/attribute::href')->item(2));
$list = new XPathDocument_Dom_List();
$list->add($firstNode);
$list->add($secondNode);
$list->add($thirdNode);
$this->assertEquals(count($list), 3);
$this->assertTrue($list->current() instanceof XPathDocument_Dom_Text);
$this->assertEquals($list->key(), 0);
$list->next();
$this->assertEquals($list->key(), 1);
$list->rewind();
$this->assertEquals($list->key(), 0);
$this->assertTrue($list->valid());
$this->assertTrue($list->offsetExists(2));
$this->assertFalse($list->offsetExists(3));
$this->assertEquals($list->offsetGet(2)->getText(), 'http://www.mickeysfishing.com/');
$list->offsetSet(3, 'Test');
$this->assertTrue($list->offsetExists(3));
$this->assertEquals($list->offsetGet(3), 'Test');
$list->offsetUnset(3);
$this->assertFalse($list->offsetExists(3));
$this->assertEquals(count($list->toArray()), 3);
}
/**
* @constructor
* @param DOMNodeList $nodes
* @param DOMDocument $dom
* Package all of the DOM* classes into their XPathDocument equivalents, so that we can
* continue to extend DOMDocument.
* @throws Exception
* @return \XPathDocument_Dom_Package
*/
public function __construct(DOMNodeList $nodes, DOMDocument $dom)
{
// Create the list that we'll populate.
$list = new XPathDocument_Dom_List();
// Loop through all of the nodes, injecting each one into XPathDocument_Dom_List.
foreach ($nodes as $node) {
// Converts things like DOMElement into XPathDocument_Dom_Element.
$className = get_class($node);
$className = str_replace('DOM', '', $className);
$className = sprintf('XPathDocument_Dom_%s', $className);
// If this class does not exist, then throw an exception.
if (!class_exists($className)) {
throw new Exception('Cannot find DOM class: ' . $className);
}
// Package the DOM class into a special XPathDocument class representing the DOM.
$class = new $className($node);
$class->injectDom($dom);
$list->add($class);
}
$this->_list = $list;
}
