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<?php
/* Icinga Web 2 | (c) 2014 Icinga Development Team | GPLv2+ */
namespace Icinga\Web\Form\Decorator;
use Zend_Form_Element;
use Zend_Form_Decorator_Abstract;
/**
* A decorator that will double a single element of a display group
*
* The options `condition', `double' and `attributes' can be passed to the constructor and are used to affect whether
* the doubling should take effect, which element should be doubled and which HTML attributes should be applied to the
* doubled element, respectively.
*
* `condition' must be an element's name that when it's part of the display group causes the condition to be met.
* `double' must be an element's name and must be part of the display group.
* `attributes' is just an array of key-value pairs.
*
* You can also pass `placement' to control whether the doubled element is prepended or appended.
*/
class ElementDoubler extends Zend_Form_Decorator_Abstract
{
/**
* Return the display group's elements with an additional copy of an element being added if the condition is met
*
* @param string $content The HTML rendered so far
*
* @return string
*/
public function render($content)
{
$group = $this->getElement();
if ($group->getElement($this->getOption('condition')) !== null) {
if ($this->getPlacement() === static::APPEND) {
return $content . $this->applyAttributes($group->getElement($this->getOption('double')))->render();
} else { // $this->getPlacement() === static::PREPEND
return $this->applyAttributes($group->getElement($this->getOption('double')))->render() . $content;
}
}
return $content;
}
/**
* Apply all element attributes
*
* @param Zend_Form_Element $element The element to apply the attributes to
*
* @return Zend_Form_Element
*/
protected function applyAttributes(Zend_Form_Element $element)
{
$attributes = $this->getOption('attributes');
if ($attributes !== null) {
foreach ($attributes as $name => $value) {
$element->setAttrib($name, $value);
}
}
return $element;
}
}
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