AlphabeticPager.php

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<?php
abstract class AlphabeticPager extends IndexPager {
 
    public function getNavigationBar() {
        if ( !$this->isNavigationBarShown() ) {
            return '';
        }
 
        if ( isset( $this->mNavigationBar ) ) {
            return $this->mNavigationBar;
        }
 
        $navBuilder = $this->getNavigationBuilder()
            ->setPrevMsg( 'prevn' )
            ->setNextMsg( 'nextn' )
            ->setFirstMsg( 'page_first' )
            ->setLastMsg( 'page_last' );
 
        $this->mNavigationBar = $navBuilder->getHtml();
 
        return $this->mNavigationBar;
    }
}