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Crawler.php
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Crawler.php
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<?php
/*
* This file is part of the Panther project.
*
* (c) Kévin Dunglas <dunglas@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
declare(strict_types=1);
namespace Symfony\Component\Panther\DomCrawler;
use Facebook\WebDriver\Exception\NoSuchElementException;
use Facebook\WebDriver\WebDriver;
use Facebook\WebDriver\WebDriverBy;
use Facebook\WebDriver\WebDriverElement;
use Symfony\Component\CssSelector\CssSelectorConverter;
use Symfony\Component\DomCrawler\Crawler as BaseCrawler;
use Symfony\Component\Panther\ExceptionThrower;
/**
* @author Kévin Dunglas <dunglas@gmail.com>
*/
final class Crawler extends BaseCrawler implements WebDriverElement
{
use ExceptionThrower;
private $elements;
private $webDriver;
/**
* @param WebDriverElement[] $elements
*/
public function __construct(array $elements = [], WebDriver $webDriver, ?string $uri = null)
{
$this->uri = $uri;
$this->webDriver = $webDriver;
$this->elements = $elements ?? [];
}
public function clear(): void
{
throw $this->createNotSupportedException(__METHOD__);
}
public function add($node): void
{
throw $this->createNotSupportedException(__METHOD__);
}
public function addContent($content, $type = null): void
{
throw $this->createNotSupportedException(__METHOD__);
}
public function addHtmlContent($content, $charset = 'UTF-8'): void
{
throw $this->createNotSupportedException(__METHOD__);
}
public function addXmlContent($content, $charset = 'UTF-8', $options = LIBXML_NONET): void
{
throw $this->createNotSupportedException(__METHOD__);
}
public function addDocument(\DOMDocument $dom): void
{
throw $this->createNotSupportedException(__METHOD__);
}
public function addNodeList(\DOMNodeList $nodes): void
{
throw $this->createNotSupportedException(__METHOD__);
}
public function addNodes(array $nodes): void
{
throw $this->createNotSupportedException(__METHOD__);
}
public function addNode(\DOMNode $node): void
{
throw $this->createNotSupportedException(__METHOD__);
}
public function eq($position): self
{
if (isset($this->elements[$position])) {
return $this->createSubCrawler([$this->elements[$position]]);
}
return $this->createSubCrawler(null);
}
public function each(\Closure $closure): array
{
$data = [];
foreach ($this->elements as $i => $element) {
$data[] = $closure($this->createSubCrawler([$element]), $i);
}
return $data;
}
public function slice($offset = 0, $length = null): self
{
return $this->createSubCrawler(\array_slice($this->elements, $offset, $length));
}
public function reduce(\Closure $closure): self
{
$elements = [];
foreach ($this->elements as $i => $element) {
if (false !== $closure($this->createSubCrawler([$element]), $i)) {
$elements[] = $element;
}
}
return $this->createSubCrawler($elements);
}
public function last()
{
return $this->eq(\count($this->elements) - 1);
}
public function siblings()
{
return $this->createSubCrawlerFromXpath('(preceding-sibling::* | following-sibling::*)');
}
public function nextAll()
{
return $this->createSubCrawlerFromXpath('following-sibling::*');
}
public function previousAll()
{
return $this->createSubCrawlerFromXpath('preceding-sibling::*');
}
public function parents()
{
return $this->createSubCrawlerFromXpath('ancestor::*', true);
}
/**
* @see https://github.com/symfony/symfony/issues/26432
*/
public function children(string $selector = null)
{
$xpath = 'child::*';
if (null !== $selector) {
$converter = $this->createCssSelectorConverter();
$xpath = $converter->toXPath($selector, 'child::');
}
return $this->createSubCrawlerFromXpath($xpath);
}
public function attr($attribute): ?string
{
$element = $this->getElementOrThrow();
if ('_text' === $attribute) {
return $this->text();
}
return (string) $element->getAttribute($attribute);
}
public function nodeName(): string
{
return $this->getElementOrThrow()->getTagName();
}
public function text(string $default = null, bool $normalizeWhitespace = true): string
{
if (!$normalizeWhitespace) {
throw new \InvalidArgumentException('Panther only supports getting normalized text.');
}
try {
return $this->getElementOrThrow()->getText();
} catch (\InvalidArgumentException $e) {
if (null === $default) {
throw $e;
}
return $default;
}
}
public function html($default = null): string
{
try {
$element = $this->getElementOrThrow();
if ('html' === $element->getTagName()) {
return $this->webDriver->getPageSource();
}
return $this->attr('outerHTML');
} catch (\InvalidArgumentException $e) {
if (null === $default) {
throw $e;
}
return (string) $default;
}
}
public function evaluate($xpath): self
{
throw $this->createNotSupportedException(__METHOD__);
}
public function extract($attributes)
{
$attributes = (array) $attributes;
$count = \count($attributes);
$data = [];
foreach ($this->elements as $element) {
$elements = [];
foreach ($attributes as $attribute) {
$elements[] = '_text' === $attribute ? $element->getText() : (string) $element->getAttribute($attribute);
}
$data[] = 1 === $count ? $elements[0] : $elements;
}
return $data;
}
public function filterXPath($xpath): self
{
return $this->filterWebDriverBy(WebDriverBy::xpath($xpath));
}
public function filter($selector): self
{
return $this->filterWebDriverBy(WebDriverBy::cssSelector($selector));
}
public function selectLink($value)
{
return $this->selectFromXpath(
\sprintf('descendant-or-self::a[contains(concat(\' \', normalize-space(string(.)), \' \'), %1$s) or ./img[contains(concat(\' \', normalize-space(string(@alt)), \' \'), %1$s)]]', static::xpathLiteral(' '.$value.' '))
);
}
public function selectImage($value)
{
return $this->selectFromXpath(\sprintf('descendant-or-self::img[contains(normalize-space(string(@alt)), %s)]', static::xpathLiteral($value)));
}
public function selectButton($value)
{
return $this->selectFromXpath(
\sprintf(
'descendant-or-self::input[((contains(%1$s, "submit") or contains(%1$s, "button")) and contains(concat(\' \', normalize-space(string(@value)), \' \'), %2$s)) or (contains(%1$s, "image") and contains(concat(\' \', normalize-space(string(@alt)), \' \'), %2$s)) or @id=%3$s or @name=%3$s] | descendant-or-self::button[contains(concat(\' \', normalize-space(string(.)), \' \'), %2$s) or @id=%3$s or @name=%3$s]',
'translate(@type, "ABCDEFGHIJKLMNOPQRSTUVWXYZ", "abcdefghijklmnopqrstuvwxyz")',
static::xpathLiteral(' '.$value.' '),
static::xpathLiteral($value)
)
);
}
public function link($method = 'get')
{
$element = $this->getElementOrThrow();
if ('get' !== $method) {
throw new \InvalidArgumentException('Only the "get" method is supported in WebDriver mode.');
}
return new Link($element, $this->webDriver->getCurrentURL());
}
public function links()
{
$links = [];
foreach ($this->elements as $element) {
$links[] = new Link($element, $this->webDriver->getCurrentURL());
}
return $links;
}
public function image()
{
return new Image($this->getElementOrThrow());
}
public function images()
{
$images = [];
foreach ($this->elements as $element) {
$images[] = new Image($element);
}
return $images;
}
public function form(array $values = null, $method = null)
{
$form = new Form($this->getElementOrThrow(), $this->webDriver);
if (null !== $values) {
$form->setValues($values);
}
return $form;
}
public function setDefaultNamespacePrefix($prefix)
{
throw $this->createNotSupportedException(__METHOD__);
}
public function registerNamespace($prefix, $namespace)
{
throw $this->createNotSupportedException(__METHOD__);
}
public function getNode($position): ?\DOMElement
{
throw new \InvalidArgumentException('The "getNode" method cannot be used in WebDriver mode. Use "getElement" instead.');
}
public function getElement(int $position): ?WebDriverElement
{
return $this->elements[$position] ?? null;
}
public function count()
{
return \count($this->elements);
}
public function getIterator(): \ArrayIterator
{
return new \ArrayIterator($this->elements);
}
protected function sibling($node, $siblingDir = 'nextSibling')
{
throw $this->createNotSupportedException(__METHOD__);
}
private function selectFromXpath(string $xpath): self
{
$xpath = WebDriverBy::xpath($xpath);
$data = [];
foreach ($this->elements as $element) {
$data = \array_merge($data, $element->findElements($xpath));
}
return $this->createSubCrawler($data);
}
/**
* @param WebDriverElement[]|null $elements
*/
private function createSubCrawler(?array $elements = null): self
{
return new static($elements ?? [], $this->webDriver, $this->uri);
}
private function createSubCrawlerFromXpath(string $selector, bool $reverse = false): self
{
try {
$elements = $this->getElementOrThrow()->findElements(WebDriverBy::xpath($selector));
} catch (NoSuchElementException $e) {
return $this->createSubCrawler(null);
}
return $this->createSubCrawler($reverse ? \array_reverse($elements) : $elements);
}
private function filterWebDriverBy(WebDriverBy $selector): self
{
$subElements = [];
foreach ($this->elements as $element) {
$subElements = \array_merge(
$subElements,
$element->findElements($selector)
);
}
return $this->createSubCrawler($subElements);
}
private function getElementOrThrow(): WebDriverElement
{
$element = $this->getElement(0);
if (!$element) {
throw new \InvalidArgumentException('The current node list is empty.');
}
return $element;
}
public function click()
{
return $this->getElementOrThrow()->click();
}
public function getAttribute($attributeName)
{
return $this->getElementOrThrow()->getAttribute($attributeName);
}
public function getCSSValue($cssPropertyName)
{
return $this->getElementOrThrow()->getCSSValue($cssPropertyName);
}
public function getLocation()
{
return $this->getElementOrThrow()->getLocation();
}
public function getLocationOnScreenOnceScrolledIntoView()
{
return $this->getElementOrThrow()->getLocationOnScreenOnceScrolledIntoView();
}
public function getSize()
{
return $this->getElementOrThrow()->getSize();
}
public function getTagName()
{
return $this->getElementOrThrow()->getTagName();
}
public function getText()
{
return $this->getElementOrThrow()->getText();
}
public function isDisplayed()
{
return $this->getElementOrThrow()->isDisplayed();
}
public function isEnabled()
{
return $this->getElementOrThrow()->isEnabled();
}
public function isSelected()
{
return $this->getElementOrThrow()->isSelected();
}
public function sendKeys($value)
{
return $this->getElementOrThrow()->sendKeys($value);
}
public function submit()
{
return $this->getElementOrThrow()->submit();
}
public function getID()
{
return $this->getElementOrThrow()->getID();
}
public function findElement(WebDriverBy $locator)
{
return $this->getElementOrThrow()->findElement($locator);
}
public function findElements(WebDriverBy $locator)
{
return $this->getElementOrThrow()->findElements($locator);
}
/**
* @throws \LogicException If the CssSelector Component is not available
*/
private function createCssSelectorConverter(): CssSelectorConverter
{
if (!class_exists(CssSelectorConverter::class)) {
throw new \LogicException('To filter with a CSS selector, install the CssSelector component ("composer require symfony/css-selector"). Or use filterXpath instead.');
}
return new CssSelectorConverter();
}
}