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|
<?php
namespace ipl\Html\FormElement;
use ipl\Html\Html;
class SelectElement extends BaseFormElement
{
protected $tag = 'select';
/** @var SelectOption[] */
protected $options = [];
protected $optionContent = [];
public function __construct($name, $attributes = null)
{
$this->getAttributes()->registerAttributeCallback(
'options',
null,
[$this, 'setOptions']
);
// ZF1 compatibility:
$this->getAttributes()->registerAttributeCallback(
'multiOptions',
null,
[$this, 'setOptions']
);
parent::__construct($name, $attributes);
}
public function hasOption($value)
{
return isset($this->options[$value]);
}
public function validate()
{
$value = $this->getValue();
if (
$value !== null && (
! ($option = $this->getOption($value))
|| $option->getAttributes()->has('disabled')
)
) {
$this->valid = false;
$this->addMessage("'$value' is not allowed here");
} elseif ($this->isRequired() && $value === null) {
$this->valid = false;
} else {
parent::validate();
}
return $this;
}
public function deselect()
{
$this->setValue(null);
return $this;
}
public function disableOption($value)
{
if ($option = $this->getOption($value)) {
$option->getAttributes()->add('disabled', true);
}
if ($this->getValue() == $value) {
$this->valid = false;
$this->addMessage("'$value' is not allowed here");
}
return $this;
}
public function disableOptions($values)
{
foreach ($values as $value) {
$this->disableOption($value);
}
return $this;
}
/**
* @param $value
* @return SelectOption|null
*/
public function getOption($value)
{
if ($this->hasOption($value)) {
return $this->options[$value];
} else {
return null;
}
}
/**
* @param array $options
* @return $this
*/
public function setOptions(array $options)
{
$this->options = [];
foreach ($options as $value => $label) {
$this->optionContent[$value] = $this->makeOption($value, $label);
}
return $this;
}
protected function makeOption($value, $label)
{
if (is_array($label)) {
$grp = Html::tag('optgroup', ['label' => $value]);
foreach ($label as $option => $val) {
$grp->addHtml($this->makeOption($option, $val));
}
return $grp;
} else {
$option = new SelectOption($value, $label);
$option->getAttributes()->registerAttributeCallback('selected', function () use ($option) {
$optionValue = $option->getValue();
return is_int($optionValue)
// The loose comparison is required because PHP casts
// numeric strings to integers if used as array keys
? $this->getValue() == $optionValue
: $this->getValue() === $optionValue;
});
$this->options[$value] = $option;
return $this->options[$value];
}
}
protected function assemble()
{
$this->addHtml(...array_values($this->optionContent));
}
}
|
