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<?php |
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namespace SP\Crawler; |
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use SplObjectStorage; |
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use DOMXPath; |
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use DOMElement; |
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use InvalidArgumentException; |
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/** |
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* @author Ivan Kerin <[email protected]> |
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* @copyright 2015, Clippings Ltd. |
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* @license http://spdx.org/licenses/BSD-3-Clause |
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*/ |
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class InputMap |
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{ |
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private static $inputClasses = [ |
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'SP\Crawler\Element\Checkbox' => 'self::input[@type="checkbox"]', |
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'SP\Crawler\Element\Radio' => 'self::input[@type="radio"]', |
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'SP\Crawler\Element\File' => 'self::input[@type="file"]', |
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'SP\Crawler\Element\Input' => 'self::input', |
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'SP\Crawler\Element\Select' => 'self::select', |
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'SP\Crawler\Element\Textarea' => 'self::textarea', |
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'SP\Crawler\Element\Option' => 'self::option', |
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'SP\Crawler\Element\Anchor' => 'self::a', |
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'SP\Crawler\Element\Submit' => 'self::*[@type="submit" and (self::input or self::button)]', |
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]; |
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/** |
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* @return array |
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*/ |
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public static function getInputClasses() |
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{ |
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return self::$inputClasses; |
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} |
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/** |
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* @var Reader |
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*/ |
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private $reader; |
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/** |
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* @var SplObjectStorage |
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*/ |
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private $items; |
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/** |
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* @param Reader $reader |
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*/ |
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public function __construct(Reader $reader) |
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{ |
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$this->reader = $reader; |
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$this->items = new SplObjectStorage(); |
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} |
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/** |
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* @return Reader |
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*/ |
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public function getReader() |
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{ |
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return $this->reader; |
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} |
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/** |
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* @param DOMElement $element |
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* @param string $xpath |
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* @return boolean |
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*/ |
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public function inputMatches(DOMElement $element, $xpath) |
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{ |
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return (bool) $this->reader->query($xpath, $element)->item(0); |
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} |
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/** |
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* @param DOMElement $element |
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* @throws InvalidArgumentException |
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* @return string |
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*/ |
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public function getInputClass(DOMElement $element) |
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{ |
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foreach (self::$inputClasses as $class => $xpath) { |
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if ($this->inputMatches($element, $xpath)) { |
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return $class; |
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} |
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} |
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throw new InvalidArgumentException(sprintf('%s is not an input', $element->tagName)); |
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} |
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/** |
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* @param DOMElement $element |
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* @throws InvalidArgumentException |
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* @return Element\AbstractElement |
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*/ |
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public function create(DOMElement $element) |
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{ |
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$class = $this->getInputClass($element); |
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return new $class($this->reader, $element); |
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} |
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/** |
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* @param DOMElement $element |
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* @return Element\AbstractElement |
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*/ |
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public function get(DOMElement $element) |
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{ |
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if (empty($this->items[$element])) { |
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$this->items[$element] = $this->create($element); |
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} |
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return $this->items[$element]; |
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} |
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} |
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spiderling-php /
crawler
