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<?php |
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namespace ntentan\honam\engines\php\helpers; |
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use ntentan\honam\engines\php\Helper; |
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use ntentan\honam\engines\php\helpers\form\Container; |
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use ntentan\honam\engines\php\helpers\form\ElementFactory; |
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use ntentan\honam\exceptions\HonamException; |
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/** |
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* A helper for rendering forms. |
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*/ |
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class FormHelper extends Helper |
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{ |
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use ElementFactory; |
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/** |
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* An instance of the container for the Form. |
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* @var array |
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*/ |
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private $containers = []; |
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/** |
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* An instance of the first container added to the form. |
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* This is saved so that methods that need to access the first container can still work after the form is closed. |
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*/ |
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private $baseContainer; |
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/** |
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* Data to be rendered into the form. |
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* @var array |
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*/ |
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private $data = []; |
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/** |
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* Any errors that should be rendered with the form. |
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*/ |
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private $errors = []; |
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/** |
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* Renders the form when the value is used as a string |
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* @return string |
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*/ |
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public function __toString() |
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{ |
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$this->baseContainer->setData($this->data); |
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$this->baseContainer->setErrors($this->errors); |
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$rendered = (string) $this->baseContainer; |
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$this->baseContainer = null; |
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return $rendered; |
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} |
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/** |
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* Set the ID of the form. |
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* @return string |
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*/ |
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public function setId($id) |
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{ |
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$this->getContainer()->setId($id); |
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} |
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public function open() |
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{ |
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return $this->open_form(); |
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} |
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public function close($submit = 'Submit') |
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{ |
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return $this->close_form($submit); |
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} |
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public function pushContainer(string $name, Container $container) |
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{ |
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if ($this->baseContainer === null && empty($this->containers)) { |
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// If a container is opened and there is no base container, we can assume its the base container. |
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$this->baseContainer = $container; |
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} else if ($this->baseContainer !== null && empty($this->containers)) { |
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// If the container is stack is empty while we still have a base container, something is wrong. |
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throw new HonamException("Cannot add a container to a form that has already been closed."); |
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} |
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array_push($this->containers, ['name' => $name, 'instance' => $container]); |
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} |
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public function popContainer(string $name) |
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{ |
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$container = array_pop($this->containers); |
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if ($name === $container['name']) { |
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// Add this container to a parent if containers are nested in any way. |
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$currentContainer = end($this->containers); |
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if ($currentContainer === false) { |
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$this->baseContainer = null; |
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} else { |
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$currentContainer['instance']->add($container['instance']); |
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} |
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return $container['instance']; |
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} else { |
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throw new HonamException("You cannot close the $name container while {$container['name']} is open."); |
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} |
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} |
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public function getActiveContainer(): Container |
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{ |
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return end($this->containers)['instance']; |
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} |
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} |
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ntentan /
honam
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