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<?php |
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/** |
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* File holding the IdRegistry class |
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* |
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* This file is part of the MediaWiki skin Chameleon. |
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* |
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* @copyright 2013 - 2015, Stephan Gambke |
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* @license GNU General Public License, version 3 (or any later version) |
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* |
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* The Chameleon skin is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by the Free |
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* Software Foundation, either version 3 of the License, or (at your option) any |
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* later version. |
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* |
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* The Chameleon skin is distributed in the hope that it will be useful, but |
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more |
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* details. |
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* |
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* You should have received a copy of the GNU General Public License along |
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* with this program. If not, see <http://www.gnu.org/licenses/>. |
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* |
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* @file |
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* @ingroup Skins |
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*/ |
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namespace Skins\Chameleon; |
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/** |
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* Class IdRegistry provides a registry and access methods to ensure each id is only used once per HTML page. |
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* |
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* @author Stephan Gambke |
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* @since 1.0 |
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* @ingroup Skins |
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*/ |
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class IdRegistry { |
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private static $sInstance; |
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private $mRegistry = array(); |
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/** |
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* @return IdRegistry |
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*/ |
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public static function getRegistry() { |
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if ( self::$sInstance === null ) { |
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self::$sInstance = new IdRegistry(); |
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} |
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return self::$sInstance; |
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} |
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/** |
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* Returns the opening tag of an HTML element in a string. |
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* |
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* The advantage over Html::openElement is that any id attribute is ensured to be unique. |
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* |
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* @param string $tag |
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* @param array $attributes |
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* |
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* @return string |
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*/ |
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View Code Duplication |
public function openElement( $tag, $attributes = array() ) { |
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if ( is_array( $attributes ) && isset( $attributes[ 'id' ] ) ) { |
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$attributes[ 'id' ] = $this->getId( $attributes[ 'id' ] ); |
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} |
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return \Html::openElement( $tag, $attributes ); |
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} |
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/** |
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* @param null|string $id |
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* @param null|mixed $component |
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* @return string |
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*/ |
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public function getId( $id = null, $component = null ) { |
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if ( empty( $id ) ) { |
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// no specific id requested, just return a unique string |
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return base_convert( uniqid(), 16, 36 ); |
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} elseif ( array_key_exists( $id, $this->mRegistry ) ) { |
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// specific id requested, but already in use |
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// return a string derived from the id and a unique string |
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$key = "$id-" . base_convert( uniqid(), 16, 36 ); |
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$this->mRegistry[ $id ][ $key ] = $component; |
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return $key; |
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} else { |
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// specific id requested that is not yet in use |
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// return the id |
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$this->mRegistry[ $id ][ $id ] = $component; |
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return $id; |
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} |
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} |
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/** |
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* Returns an HTML element in a string. The contents are NOT escaped. |
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* |
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* The advantage over Html::rawElement is that any id attribute is ensured to be unique. |
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* |
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* @param string $tag |
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* @param array $attributes |
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* @param string $contents |
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* |
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* @return string |
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*/ |
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View Code Duplication |
public function element( $tag, $attributes = array(), $contents = '' ) { |
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if ( is_array( $attributes ) && isset( $attributes[ 'id' ] ) ) { |
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$attributes[ 'id' ] = $this->getId( $attributes[ 'id' ] ); |
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} |
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return \Html::rawElement( $tag, $attributes, $contents ); |
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} |
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} |
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