CreditsAction.php

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<?php
class CreditsAction extends FormlessAction {

        public function getName() {
                return 'credits';
        }

        protected function getDescription() {
                return wfMsgHtml( 'creditspage' );
        }

        public function onView() {
                wfProfileIn( __METHOD__ );

                if ( $this->page->getID() == 0 ) {
                        $s = $this->msg( 'nocredits' )->parse();
                } else {
                        $s = $this->getCredits( -1 );
                }

                wfProfileOut( __METHOD__ );

                return Html::rawElement( 'div', array( 'id' => 'mw-credits' ), $s );
        }

        public function getCredits( $cnt, $showIfMax = true ) {
                wfProfileIn( __METHOD__ );
                $s = '';

                if ( $cnt != 0 ) {
                        $s = $this->getAuthor( $this->page );
                        if ( $cnt > 1 || $cnt < 0 ) {
                                $s .= ' ' . $this->getContributors( $cnt - 1, $showIfMax );
                        }
                }

                wfProfileOut( __METHOD__ );
                return $s;
        }

        protected function getAuthor( Page $article ) {
                $user = User::newFromName( $article->getUserText(), false );

                $timestamp = $article->getTimestamp();
                if ( $timestamp ) {
                        $lang = $this->getLanguage();
                        $d = $lang->date( $article->getTimestamp(), true );
                        $t = $lang->time( $article->getTimestamp(), true );
                } else {
                        $d = '';
                        $t = '';
                }
                return $this->msg( 'lastmodifiedatby', $d, $t )->rawParams(
                        $this->userLink( $user ) )->params( $user->getName() )->escaped();
        }

        protected function getContributors( $cnt, $showIfMax ) {
                global $wgHiddenPrefs;

                $contributors = $this->page->getContributors();

                $others_link = false;

                # Hmm... too many to fit!
                if ( $cnt > 0 && $contributors->count() > $cnt ) {
                        $others_link = $this->othersLink();
                        if ( !$showIfMax )
                                return $this->msg( 'othercontribs' )->rawParams(
                                        $others_link )->params( $contributors->count() )->escaped();
                }

                $real_names = array();
                $user_names = array();
                $anon_ips = array();

                # Sift for real versus user names
                foreach ( $contributors as $user ) {
                        $cnt--; 
                        if ( $user->isLoggedIn() ) {
                                $link = $this->link( $user );
                                if ( !in_array( 'realname', $wgHiddenPrefs ) && $user->getRealName() ) {
                                        $real_names[] = $link;
                                } else {
                                        $user_names[] = $link;
                                }
                        } else {
                                $anon_ips[] = $this->link( $user );
                        }

                        if ( $cnt == 0 ) {
                                break;
                        }
                }

                $lang = $this->getLanguage();

                if ( count( $real_names ) ) {
                        $real = $lang->listToText( $real_names );
                } else {
                        $real = false;
                }

                # "ThisSite user(s) A, B and C"
                if ( count( $user_names ) ) {
                        $user = $this->msg( 'siteusers' )->rawParams( $lang->listToText( $user_names ) )->params(
                                count( $user_names ) )->escaped();
                } else {
                        $user = false;
                }

                if ( count( $anon_ips ) ) {
                        $anon = $this->msg( 'anonusers' )->rawParams( $lang->listToText( $anon_ips ) )->params(
                                count( $anon_ips ) )->escaped();
                } else {
                        $anon = false;
                }

                # This is the big list, all mooshed together. We sift for blank strings
                $fulllist = array();
                foreach ( array( $real, $user, $anon, $others_link ) as $s ) {
                        if ( $s !== false ) {
                                array_push( $fulllist, $s );
                        }
                }

                $count = count( $fulllist );
                # "Based on work by ..."
                return $count
                        ? $this->msg( 'othercontribs' )->rawParams(
                                $lang->listToText( $fulllist ) )->params( $count )->escaped()
                        : '';
        }

        protected function link( User $user ) {
                global $wgHiddenPrefs;
                if ( !in_array( 'realname', $wgHiddenPrefs ) && !$user->isAnon() ) {
                        $real = $user->getRealName();
                } else {
                        $real = false;
                }

                $page = $user->isAnon()
                        ? SpecialPage::getTitleFor( 'Contributions', $user->getName() )
                        : $user->getUserPage();

                return Linker::link( $page, htmlspecialchars( $real ? $real : $user->getName() ) );
        }

        protected function userLink( User $user ) {
                $link = $this->link( $user );
                if ( $user->isAnon() ) {
                        return $this->msg( 'anonuser' )->rawParams( $link )->parse();
                } else {
                        global $wgHiddenPrefs;
                        if ( !in_array( 'realname', $wgHiddenPrefs ) && $user->getRealName() ) {
                                return $link;
                        } else {
                                return $this->msg( 'siteuser' )->rawParams( $link )->params( $user->getName() )->escaped();
                        }
                }
        }

        protected function othersLink() {
                return Linker::linkKnown(
                        $this->getTitle(),
                        $this->msg( 'others' )->escaped(),
                        array(),
                        array( 'action' => 'credits' )
                );
        }
}