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<?php
namespace OOUI;
/**
* Dropdown input widget, wrapping a `<select>` element. Intended to be used within a
* OO.ui.FormLayout.
*/
class DropdownInputWidget extends InputWidget {
/**
* HTML `<option>` tags for this widget.
* @var Tag[]
*/
protected $options = array();
/**
* @param array $config Configuration options
* @param array[] $config['options'] Array of menu options in the format
* `array( 'data' => …, 'label' => … )`
*/
public function __construct( array $config = array() ) {
// Parent constructor
parent::__construct( $config );
// Mixins
$this->mixin( new TitledElement( $this,
array_merge( $config, array( 'titled' => $this->input ) ) ) );
// Initialization
$this->setOptions( isset( $config['options'] ) ? $config['options'] : array() );
$this->addClasses( array( 'oo-ui-dropdownInputWidget' ) );
}
protected function getInputElement( $config ) {
return new Tag( 'select' );
}
public function setValue( $value ) {
$this->value = $this->cleanUpValue( $value );
foreach ( $this->options as &$opt ) {
if ( $opt->getAttribute( 'value' ) === $this->value ) {
$opt->setAttributes( array( 'selected' => 'selected' ) );
} else {
$opt->removeAttributes( array( 'selected' ) );
}
}
return $this;
}
/**
* Set the options available for this input.
*
* @param array[] $options Array of menu options in the format
* `array( 'data' => …, 'label' => … )`
* @chainable
*/
public function setOptions( $options ) {
$value = $this->getValue();
$isValueAvailable = false;
$this->options = array();
// Rebuild the dropdown menu
$this->input->clearContent();
foreach ( $options as $opt ) {
$optValue = $this->cleanUpValue( $opt['data'] );
$option = new Tag( 'option' );
$option->setAttributes( array( 'value' => $optValue ) );
$option->appendContent( isset( $opt['label'] ) ? $opt['label'] : $optValue );
if ( $value === $optValue ) {
$isValueAvailable = true;
}
$this->options[] = $option;
$this->input->appendContent( $option );
}
// Restore the previous value, or reset to something sensible
if ( $isValueAvailable ) {
// Previous value is still available
$this->setValue( $value );
} else {
// No longer valid, reset
if ( count( $options ) ) {
$this->setValue( $options[0]['data'] );
}
}
return $this;
}
public function getConfig( &$config ) {
$o = array();
foreach ( $this->options as $option ) {
$label = $option->content[0];
$data = $option->getAttribute( 'value' );
$o[] = array( 'data' => $data, 'label' => $label );
}
$config['options'] = $o;
return parent::getConfig( $config );
}
}
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