SemanticMediaWiki/includes/datavalues/SMW_DV_Error.php

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<?php
class SMWErrorValue extends SMWDataValue {

        public function __construct( $typeid, $errormsg = '', $uservalue = '', $caption = false ) {
                parent::__construct( $typeid );
                $this->m_caption = ( $caption !== false ) ? $caption : $uservalue;
                if ( $errormsg !== '' ) {
                        $this->addError( $errormsg );
                }
        }

        protected function parseUserValue( $value ) {
                if ( $this->m_caption === false ) {
                        $this->m_caption = $value;
                }
                $this->addError( wfMsgForContent( 'smw_parseerror' ) );
        }

        protected function loadDataItem( SMWDataItem $dataItem ) {
                if ( $dataItem->getDIType() == SMWDataItem::TYPE_ERROR ) {
                        $this->addError( $dataItem->getErrors() );
                        $this->m_caption = $this->getErrorText();
                        return true;
                } else {
                        return false;
                }
        }

        public function getShortWikiText( $linked = null ) {
                return $this->m_caption;
        }

        public function getShortHTMLText( $linker = null ) {
                return htmlspecialchars( $this->getShortWikiText( $linker ) );
        }

        public function getLongWikiText( $linked = null ) {
                return $this->getErrorText();
        }

        public function getLongHTMLText( $linker = null ) {
                return $this->getErrorText();
        }

        public function getWikiValue() {
                return $this->m_dataitem->getString();
        }

        public function isValid() {
                return false;
        }

}

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