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<?php
/**
* Class for generating HTML <select> elements.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
*/
/**
* Class for generating HTML <select> or <datalist> elements.
*/
class XmlSelect {
protected $options = [];
protected $default = false;
protected $tagName = 'select';
protected $attributes = [];
public function __construct( $name = false, $id = false, $default = false ) {
if ( $name ) {
$this->setAttribute( 'name', $name );
}
if ( $id ) {
$this->setAttribute( 'id', $id );
}
if ( $default !== false ) {
$this->default = $default;
}
}
/**
* @param string|array $default
*/
public function setDefault( $default ) {
$this->default = $default;
}
/**
* @param string|array $tagName
*/
public function setTagName( $tagName ) {
$this->tagName = $tagName;
}
/**
* @param string $name
* @param string $value
*/
public function setAttribute( $name, $value ) {
$this->attributes[$name] = $value;
}
/**
* @param string $name
* @return string|null
*/
public function getAttribute( $name ) {
if ( isset( $this->attributes[$name] ) ) {
return $this->attributes[$name];
} else {
return null;
}
}
/**
* @param string $label
* @param string $value If not given, assumed equal to $label
*/
public function addOption( $label, $value = false ) {
$value = $value !== false ? $value : $label;
$this->options[] = [ $label => $value ];
}
/**
* This accepts an array of form
* label => value
* label => ( label => value, label => value )
*
* @param array $options
*/
public function addOptions( $options ) {
$this->options[] = $options;
}
/**
* This accepts an array of form:
* label => value
* label => ( label => value, label => value )
*
* @param array $options
* @param string|array $default
* @return string
*/
static function formatOptions( $options, $default = false ) {
$data = '';
foreach ( $options as $label => $value ) {
if ( is_array( $value ) ) {
$contents = self::formatOptions( $value, $default );
$data .= Html::rawElement( 'optgroup', [ 'label' => $label ], $contents ) . "\n";
} else {
// If $default is an array, then the <select> probably has the multiple attribute,
// so we should check if each $value is in $default, rather than checking if
// $value is equal to $default.
$selected = is_array( $default ) ? in_array( $value, $default ) : $value === $default;
$data .= Xml::option( $label, $value, $selected ) . "\n";
}
}
return $data;
}
/**
* @return string
*/
public function getHTML() {
$contents = '';
foreach ( $this->options as $options ) {
$contents .= self::formatOptions( $options, $this->default );
}
return Html::rawElement( $this->tagName, $this->attributes, rtrim( $contents ) );
}
}