Searches for an node in the DOM tree and returns first element or null.
|
public first ( string $expression, string $type = Query::TYPE_CSS, boolean $wrapElement = true ) : |
||
| $expression | string | XPath expression or a CSS selector |
| $type | string | The type of the expression |
| $wrapElement | boolean | Returns \DiDom\Element if true, otherwise \DOMElement |
| return | ||
/**
* Sets inner HTML.
*
* @param string $html
*
* @return Element
*/
public function setInnerHtml($html)
{
if (!is_string($html)) {
throw new InvalidArgumentException(sprintf('%s expects parameter 1 to be string, %s given', __METHOD__, is_object($html) ? get_class($html) : gettype($html)));
}
// remove all child nodes
foreach ($this->node->childNodes as $node) {
$this->node->removeChild($node);
}
if ($html !== '') {
Errors::disable();
$html = "<htmlfragment>{$html}</htmlfragment>";
$document = new Document($html);
$fragment = $document->first('htmlfragment')->getNode();
foreach ($fragment->childNodes as $node) {
$newNode = $this->node->ownerDocument->importNode($node, true);
$this->node->appendChild($newNode);
}
Errors::restore();
}
return $this;
}
public function testReplaceToNewElement()
{
$html = '<ul><li>One</li><li>Two</li><li>Three</li></ul>';
$document = new Document($html, false);
$first = $document->find('li')[0];
$newElement = new Element('li', 'Foo');
$this->assertEquals($first->getNode(), $first->replace($newElement)->getNode());
$this->assertEquals('Foo', $document->find('li')[0]->text());
$this->assertCount(3, $document->find('li'));
// replace with new node
$html = '<span>Foo <a href="#">Bar</a> Baz</span>';
$document = new Document($html, false);
$anchor = $document->first('a');
$textNode = new \DOMText($anchor->text());
$anchor->replace($textNode);
}
public function testFirst()
{
$html = '<ul><li>One</li><li>Two</li><li>Three</li></ul>';
$document = new Document($html, false);
$items = $document->find('ul > li');
$this->assertEquals($items[0]->getNode(), $document->first('ul > li')->getNode());
$this->assertEquals('One', $document->first('ul > li::text'));
$document = new Document();
$this->assertNull($document->first('ul > li'));
}
