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<?php |
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namespace Openbuildings\Spiderling; |
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/** |
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* Helper to handle form serialization, modification and posting |
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* |
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* @package Openbuildings\Spiderling |
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* @author Ivan Kerin |
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* @copyright (c) 2013 OpenBuildings Ltd. |
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* @license http://spdx.org/licenses/BSD-3-Clause |
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*/ |
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class Driver_Simple_Forms |
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{ |
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/** |
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* DOMXPath object to perform queries with |
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* @var DOMXPath |
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*/ |
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protected $_xpath; |
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function __construct($xpath) |
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{ |
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$this->xpath = $xpath; |
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} |
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/** |
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* Get the value of a DOMElement with a given xpath |
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* @param string $xpath |
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* @return mixed |
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*/ |
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public function get_value($xpath) |
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{ |
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$node = $this->xpath->find($xpath); |
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switch ($node->tagName) |
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{ |
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case 'textarea': |
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return $node->textContent; |
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break; |
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case 'select': |
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$options = array(); |
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foreach ($this->xpath->query(".//option[@selected]", $node) as $option) |
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{ |
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$options[] = $option->hasAttribute('value') ? $option->getAttribute('value') : $option->textContent; |
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} |
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return $node->hasAttribute('multiple') ? $options : (isset($options[0]) ? $options[0] : NULL); |
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break; |
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default: |
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return $node->getAttribute('value'); |
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} |
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} |
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/** |
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* Set the value of a DOMElement, identified by an xpath, calls one of the stter methods |
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* @param string $xpath |
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* @param mixed $value |
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*/ |
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public function set_value($xpath, $value) |
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{ |
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$node = $this->xpath->find($xpath); |
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$setter = 'set_value_input'; |
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$type = $node->getAttribute('type'); |
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if ($node->tagName == 'input' AND $type == 'checkbox') |
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{ |
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$setter = 'set_value_checkbox'; |
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} |
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elseif ($node->tagName == 'input' AND $type == 'radio') |
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{ |
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$setter = 'set_value_radio'; |
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} |
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elseif ($node->tagName == 'textarea') |
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{ |
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$setter = 'set_value_textarea'; |
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} |
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elseif ($node->tagName == 'option') |
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{ |
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$setter = 'set_value_option'; |
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} |
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$this->{$setter}($node, $value); |
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} |
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/** |
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* Set the value of a checkbos DOMNode |
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* @param DOMNode $checkbox |
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* @param boolean $value |
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*/ |
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public function set_value_checkbox(\DOMNode $checkbox, $value) |
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{ |
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if ($value) |
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{ |
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$checkbox->setAttribute('checked', 'checked'); |
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} |
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else |
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{ |
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$checkbox->removeAttribute('checked'); |
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} |
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} |
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/** |
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* Set the value of a radio DOMNode, uncheck any other radio input in the same group |
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* @param DOMNode $radio |
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* @param boolean $value |
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*/ |
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public function set_value_radio(\DOMNode $radio, $value) |
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{ |
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$name = $radio->getAttribute('name'); |
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foreach ($this->xpath->query("//input[@type='radio' and @name='$name' and @checked]") as $other_radio) |
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{ |
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$other_radio->removeAttribute('checked'); |
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} |
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if ($value) |
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{ |
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$radio->setAttribute('checked', 'checked'); |
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} |
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} |
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/** |
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* Set the value of a normal input |
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* @param DOMNode $input |
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* @param string $value |
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*/ |
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public function set_value_input(\DOMNode $input, $value) |
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{ |
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$input->setAttribute('value', $value); |
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} |
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/** |
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* Set the value of a normal textarea |
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* @param DOMNode $textarea |
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* @param string $value |
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*/ |
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public function set_value_textarea(\DOMNode $textarea, $value) |
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{ |
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$textarea->nodeValue = $value; |
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} |
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/** |
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* Set the value of an option DOMNode, unselect other options in this select, if it is not multiple |
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* @param DOMNode $option |
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* @param boolean $value |
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*/ |
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public function set_value_option(\DOMNode $option, $value) |
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{ |
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if ($value) |
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{ |
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$select = $this->xpath->find("./ancestor::select", $option); |
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if ( ! $select->hasAttribute('multiple')) |
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{ |
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foreach ($this->xpath->query(".//option[@selected]", $select) as $old_option) |
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{ |
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$old_option->removeAttribute('selected'); |
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} |
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} |
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$option->setAttribute('selected', 'selected'); |
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} |
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else |
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{ |
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$option->removeAttribute('selected'); |
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} |
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} |
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/** |
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* Return all the contents of file inputs in a form, identified by an xpath |
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* @param string $xpath |
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* @return string |
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*/ |
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public function serialize_files($xpath) |
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{ |
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$form = $this->xpath->find($xpath); |
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$fields = ".//*[not(@disabled) and (self::input and @type = 'file')]"; |
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$data = array(); |
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foreach ($this->xpath->query($fields, $form) as $field) |
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{ |
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$data[] = $field->getAttribute('name').'='.$field->getAttribute('value'); |
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} |
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return join('&', $data); |
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} |
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/** |
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* Return the contents of all the inputs from a form, identified by an xpath. |
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* Don't include file inputs or disabled inputs |
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* @param string $xpath |
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* @return string |
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*/ |
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public function serialize_form($xpath) |
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{ |
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$form = $this->xpath->find($xpath); |
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$types['radio'] = "(self::input and @type = 'radio' and @checked)"; |
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$types['checkbox'] = "(self::input and @type = 'checkbox' and @checked)"; |
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$types['others'] = "(self::input and @type != 'radio' and @type != 'checkbox' and @type != 'file' and @type != 'submit')"; |
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$types['notype'] = "(self::input and not(@type))"; |
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$types['select'] = "(self::select)"; |
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$types['textarea'] = "(self::textarea)"; |
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$fields = ".//*[not(@disabled) and (".join(' or ', $types).")]"; |
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$data = array(); |
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foreach ($this->xpath->query($fields, $form) as $field) |
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{ |
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$value = $this->get_value($field); |
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if (is_array($value)) |
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{ |
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foreach ($value as $name => $value_item) |
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{ |
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$data[] = $field->getAttribute('name')."[$name]".'='.urlencode($value_item); |
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} |
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} |
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else |
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{ |
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$data[] = $field->getAttribute('name').'='.urlencode($value); |
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} |
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} |
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return join('&', $data); |
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} |
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} |
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Adding explicit visibility (
private
,protected
, orpublic
) is generally recommend to communicate to other developers how, and from where this method is intended to be used.