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<?php |
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/** |
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* This file is part of slick/form package |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Slick\Form\Input; |
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use Slick\Form\Element\AbstractElement; |
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use Slick\Form\Element\Label; |
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use Slick\Form\ElementInterface; |
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use Slick\Form\Exception\InvalidArgumentException; |
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use Slick\Form\InputInterface; |
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use Slick\Form\Renderer\Input; |
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use Slick\I18n\TranslateMethods; |
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/** |
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* Abstract Input: base input interface implementations |
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* |
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* @package Slick\Form\Input |
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* @author Filipe Silva <[email protected]> |
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*/ |
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abstract class AbstractInput extends AbstractElement |
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{ |
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/** |
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* @var int int |
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*/ |
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protected $instances = 0; |
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/** |
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* @var string used in input id generation |
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*/ |
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protected static $idPrefix = 'input-'; |
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/** |
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* @var Label|ElementInterface |
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*/ |
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protected $label; |
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/** |
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* @var bool |
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*/ |
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protected $required = false; |
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/** |
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* Add validation methods |
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*/ |
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use ValidationAwareMethods; |
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/** |
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* Add filter methods |
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*/ |
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use FilterAwareMethods; |
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/** |
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* Needed for label translation |
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*/ |
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use TranslateMethods; |
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/** |
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* @var string Renderer class |
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*/ |
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protected $rendererClass = Input::class; |
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/** |
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* Get input name |
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* |
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* @return mixed |
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*/ |
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public function getName() |
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{ |
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return trim($this->getAttribute('name'), ']['); |
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} |
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/** |
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* Sets input name |
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* |
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* @param string $name |
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* |
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* @return self|$this|InputInterface|AbstractInput |
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*/ |
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public function setName($name) |
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{ |
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$attrName = $this->isMultiple() |
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? "{$name}[]" |
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: $name; |
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$this->setAttribute('name', $attrName); |
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$this->name = $name; |
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if ($label = $this->getLabel()) { |
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$this->getLabel()->setAttribute('for', $this->generateId()); |
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} |
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return $this; |
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} |
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/** |
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* Sets the input label |
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* |
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* Label parameter can be a string or a element interface. |
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* If a string is provided then an ElementInterface MUST be created. |
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* This element MUST result in a <label> HTML tag when rendering and |
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* as you may define your own implementation it is advisable that you |
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* use the Slick\Form\Element\Label object. |
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* |
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* @param string|ElementInterface $label |
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* |
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* @return self|$this|InputInterface |
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* |
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* @throws InvalidArgumentException If the provided label is not a string |
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* or is not an object of a class implementing the ElementInterface. |
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*/ |
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public function setLabel($label) |
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{ |
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$this->label = $this->checkLabel($label); |
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$class = $this->label->getAttribute('class'); |
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$this->label->setAttribute('for', $this->generateId()) |
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->setAttribute('class', trim("control-label {$class}")); |
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return $this; |
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} |
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/** |
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* Gets the input label element |
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* |
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* @return ElementInterface|Label |
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*/ |
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public function getLabel() |
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{ |
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return $this->label; |
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} |
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/** |
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* Returns the input value as user entered it, without filtering |
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* |
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* @return mixed |
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*/ |
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public function getRawValue() |
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{ |
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return $this->value; |
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} |
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/** |
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* Overrides the default behavior to add the value attribute |
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* |
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* @param mixed $value |
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* |
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* @return mixed |
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*/ |
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public function setValue($value) |
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{ |
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return parent::setValue($value); |
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} |
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/** |
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* Generate input id based on provided name |
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* |
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* @return string |
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*/ |
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protected function generateId() |
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{ |
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$inputId = static::$idPrefix . $this->getName(); |
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if ($this->isMultiple()) { |
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$inputId = "{$inputId}-{$this->instances}"; |
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} |
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$this->setAttribute('id', $inputId); |
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return $inputId; |
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} |
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/** |
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* Check provided label |
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* |
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* @param string|ElementInterface $label |
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* |
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* @return ElementInterface|Label |
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*/ |
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protected function checkLabel($label) |
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{ |
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if ($label instanceof ElementInterface) { |
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return $label; |
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} |
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return $this->createLabel($this->translate($label)); |
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} |
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/** |
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* Creates label from string |
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* |
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* @param string $label |
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* |
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* @return ElementInterface|Label |
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*/ |
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protected function createLabel($label) |
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{ |
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if (!is_string($label)) { |
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throw new InvalidArgumentException( |
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"Provided label is not a string or an ElementInterface ". |
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"interface object." |
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); |
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} |
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$element = class_exists($label) |
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? $this->createLabelFromClass($label) |
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: new Label('', $label); |
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return $element; |
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} |
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/** |
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* Instantiates the provided ElementInterface class |
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* |
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* @param string $class |
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* |
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* @return ElementInterface|Label |
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*/ |
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protected function createLabelFromClass($class) |
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{ |
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if (! is_subclass_of($class, ElementInterface::class)) { |
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throw new InvalidArgumentException( |
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"Class '{$class}' does not implements ElementInterface and ". |
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"cannot be used as input label." |
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); |
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} |
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$label = new $class('', ucfirst($this->getName())); |
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return $label; |
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} |
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/** |
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* Check if this input is required to be filled |
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* |
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* @return bool |
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*/ |
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public function isRequired() |
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{ |
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return $this->required; |
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} |
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/** |
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* Sets the required flag for this input |
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* |
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* @param boolean $required |
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* |
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* @return $this|self|InputInterface |
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*/ |
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public function setRequired($required) |
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{ |
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$this->required = (boolean) $required; |
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if ($this->isRequired()) { |
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$this->setAttribute('required'); |
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return $this; |
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} |
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if ($this->getAttributes()->containsKey('required')) { |
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$this->getAttributes()->remove('required'); |
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} |
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return $this; |
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} |
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/** |
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* Check if this input is for multiple usage |
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* |
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* @return boolean |
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*/ |
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public function isMultiple() |
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{ |
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return $this->settings['multiple']; |
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} |
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/** |
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* If input is multiple get the instance it belongs |
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* |
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* @return int |
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*/ |
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public function getInstance() |
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{ |
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return $this->instances; |
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} |
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/** |
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* If input is multiple get the instance value of it |
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* |
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* @return mixed |
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*/ |
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public function getInstanceValue() |
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{ |
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$value = $this->getValue(); |
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if ( |
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is_array($value) && |
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array_key_exists($this->instances, $this->value) |
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) { |
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$value = $value[$this->instances]; |
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} |
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return $value; |
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} |
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/** |
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* Returns the HTML string for current element |
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* |
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* @param array $context |
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* |
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* @return string |
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*/ |
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public function render($context = []) |
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{ |
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$this->setAttribute('value', $this->getInstanceValue()); |
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$data = parent::render($context); |
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if ($this->isMultiple()) { |
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$this->updateInstance(); |
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} |
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return $data; |
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} |
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/** |
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* Updates input id and link it to its label |
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* |
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* @return self|AbstractInput |
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*/ |
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protected function updateInstance() |
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{ |
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$this->instances++; |
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$id = $this->generateId(); |
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$this->setAttribute($id, $id); |
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if ($label = $this->getLabel()) { |
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$label->setAttribute('for', $id); |
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} |
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return $this; |
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} |
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} |
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This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.
Both the
$myVar
assignment in line 1 and the$higher
assignment in line 2 are dead. The first because$myVar
is never used and the second because$higher
is always overwritten for every possible time line.