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<?php |
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namespace SMT; |
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use OutputPage; |
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/** |
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* @license GNU GPL v2+ |
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* @since 1.0 |
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* |
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* @author mwjames |
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*/ |
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class OutputPageHtmlTagsInserter { |
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/** |
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* @var OutputPage |
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*/ |
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private $outputPage; |
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/** |
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* @var array |
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*/ |
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private $metaTagsBlacklist = array(); |
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/** |
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* @var array |
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*/ |
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private $metaPropertyPrefixes = array(); |
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/** |
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* @var boolean |
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*/ |
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private $metaPropertyMarkup = false; |
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/** |
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* @var string |
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*/ |
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private $actionName = ''; |
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/** |
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* @since 1.0 |
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* |
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* @param OutputPage $outputPage |
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*/ |
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public function __construct( OutputPage $outputPage ) { |
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$this->outputPage = $outputPage; |
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} |
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/** |
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* @since 1.0 |
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* |
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* @param array $metaTagsBlacklist |
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*/ |
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public function setMetaTagsBlacklist( array $metaTagsBlacklist ) { |
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$this->metaTagsBlacklist = array_flip( $metaTagsBlacklist ); |
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} |
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/** |
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* @since 1.4 |
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* |
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* @param array $metaPropertyPrefixes |
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*/ |
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public function setMetaPropertyPrefixes( array $metaPropertyPrefixes ) { |
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$this->metaPropertyPrefixes = $metaPropertyPrefixes; |
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} |
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/** |
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* @since 1.0 |
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* |
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* @param string $actionName |
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*/ |
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public function setActionName( $actionName ) { |
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$this->actionName = $actionName; |
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} |
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/** |
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* @since 1.0 |
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* |
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* @return boolean |
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*/ |
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public function canUseOutputPage() { |
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if ( $this->outputPage->getTitle() === null || $this->outputPage->getTitle()->isSpecialPage() || $this->actionName !== 'view' ) { |
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return false; |
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} |
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return true; |
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} |
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/** |
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* @since 1.0 |
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* |
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* @param string $tag |
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* @param string $content |
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*/ |
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public function addTagContentToOutputPage( $tag, $content ) { |
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$tag = strtolower( htmlspecialchars( trim( $tag ) ) ); |
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$content = htmlspecialchars( $content ); |
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if ( isset( $this->metaTagsBlacklist[$tag] ) ) { |
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return; |
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} |
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if ( $this->reqMetaPropertyMarkup( $tag ) ) { |
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return $this->addMetaPropertyMarkup( $tag, $content ); |
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} |
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$this->outputPage->addMeta( $tag, $content ); |
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} |
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private function addMetaPropertyMarkup( $tag, $content ) { |
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$comment = ''; |
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if ( !$this->metaPropertyMarkup ) { |
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$comment .= '<!-- Semantic MetaTags -->' . "\n"; |
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$this->metaPropertyMarkup = true; |
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} |
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$content = $comment . \Html::element( 'meta', array( |
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'property' => $tag, |
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'content' => $content |
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) ); |
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$this->outputPage->addHeadItem( "meta:property:$tag", $content ); |
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} |
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private function reqMetaPropertyMarkup( $tag ) { |
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// If a tag contains a `og:` such as `og:title` it is expected to be a |
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// OpenGraph protocol tag along with other prefixes maintained in |
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// $GLOBALS['smtgMetaPropertyPrefixes'] |
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foreach ( $this->metaPropertyPrefixes as $prefix ) { |
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if ( strpos( $tag, $prefix ) !== false ) { |
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return true; |
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} |
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} |
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return false; |
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} |
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} |
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SemanticMediaWiki /
SemanticMetaTags
