511 lines
14 KiB
PHP
511 lines
14 KiB
PHP
<?php
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/**
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* Displays information about a page.
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*
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* Copyright © 2011 Alexandre Emsenhuber
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*
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* This program 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
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*
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* @file
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* @ingroup Actions
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*/
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class InfoAction extends FormlessAction {
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/**
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* Returns the name of the action this object responds to.
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*
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* @return string lowercase
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*/
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public function getName() {
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return 'info';
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}
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/**
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* Whether this action can still be executed by a blocked user.
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*
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* @return bool
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*/
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public function requiresUnblock() {
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return false;
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}
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/**
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* Whether this action requires the wiki not to be locked.
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*
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* @return bool
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*/
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public function requiresWrite() {
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return false;
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}
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/**
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* Shows page information on GET request.
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*
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* @return string Page information that will be added to the output
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*/
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public function onView() {
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global $wgContLang, $wgDisableCounters, $wgRCMaxAge, $wgRestrictionTypes;
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$user = $this->getUser();
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$lang = $this->getLanguage();
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$title = $this->getTitle();
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$id = $title->getArticleID();
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// Get page information that would be too "expensive" to retrieve by normal means
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$userCanViewUnwatchedPages = $user->isAllowed( 'unwatchedpages' );
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$pageInfo = self::pageCountInfo( $title, $userCanViewUnwatchedPages, $wgDisableCounters );
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// Get page properties
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$dbr = wfGetDB( DB_SLAVE );
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$result = $dbr->select(
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'page_props',
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array( 'pp_propname', 'pp_value' ),
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array( 'pp_page' => $id ),
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__METHOD__
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);
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$pageProperties = array();
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foreach ( $result as $row ) {
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$pageProperties[$row->pp_propname] = $row->pp_value;
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}
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$content = '';
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$table = '';
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// Header
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if ( !$this->msg( 'pageinfo-header' )->isDisabled() ) {
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$content .= $this->msg( 'pageinfo-header ' )->parse();
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}
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// Basic information
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$content = $this->addHeader( $content, $this->msg( 'pageinfo-header-basic' )->text() );
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// Display title
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$displayTitle = $title->getPrefixedText();
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if ( !empty( $pageProperties['displaytitle'] ) ) {
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$displayTitle = $pageProperties['displaytitle'];
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}
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$table = $this->addRow( $table,
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$this->msg( 'pageinfo-display-title' )->escaped(), $displayTitle );
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// Default sort key
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$sortKey = $title->getCategorySortKey();
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if ( !empty( $pageProperties['defaultsort'] ) ) {
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$sortKey = $pageProperties['defaultsort'];
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}
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$table = $this->addRow( $table,
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$this->msg( 'pageinfo-default-sort' )->escaped(), $sortKey );
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// Page length (in bytes)
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$table = $this->addRow( $table,
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$this->msg( 'pageinfo-length' )->escaped(), $lang->formatNum( $title->getLength() ) );
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// Page ID (number not localised, as it's a database ID.)
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$table = $this->addRow( $table,
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$this->msg( 'pageinfo-article-id' )->escaped(), $id );
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// Search engine status
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$pOutput = new ParserOutput();
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if ( isset( $pageProperties['noindex'] ) ) {
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$pOutput->setIndexPolicy( 'noindex' );
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}
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// Use robot policy logic
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$policy = $this->page->getRobotPolicy( 'view', $pOutput );
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$table = $this->addRow( $table,
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$this->msg( 'pageinfo-robot-policy' )->escaped(),
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$this->msg( "pageinfo-robot-${policy['index']}" )->escaped()
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);
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if ( !$wgDisableCounters ) {
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// Number of views
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$table = $this->addRow( $table,
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$this->msg( 'pageinfo-views' )->escaped(), $lang->formatNum( $pageInfo['views'] )
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);
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}
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if ( $userCanViewUnwatchedPages ) {
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// Number of page watchers
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$table = $this->addRow( $table,
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$this->msg( 'pageinfo-watchers' )->escaped(), $lang->formatNum( $pageInfo['watchers'] ) );
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}
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// Redirects to this page
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$whatLinksHere = SpecialPage::getTitleFor( 'Whatlinkshere', $title->getPrefixedText() );
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$table = $this->addRow( $table,
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Linker::link(
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$whatLinksHere,
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$this->msg( 'pageinfo-redirects-name' )->escaped(),
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array(),
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array( 'hidelinks' => 1, 'hidetrans' => 1 )
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),
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$this->msg( 'pageinfo-redirects-value' )
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->numParams( count( $title->getRedirectsHere() ) )->escaped()
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);
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// Subpages of this page, if subpages are enabled for the current NS
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if ( MWNamespace::hasSubpages( $title->getNamespace() ) ) {
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$prefixIndex = SpecialPage::getTitleFor( 'Prefixindex', $title->getPrefixedText() . '/' );
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$table = $this->addRow( $table,
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Linker::link( $prefixIndex, $this->msg( 'pageinfo-subpages-name' )->escaped() ),
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$this->msg( 'pageinfo-subpages-value' )
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->numParams(
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$pageInfo['subpages']['total'],
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$pageInfo['subpages']['redirects'],
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$pageInfo['subpages']['nonredirects'] )->escaped()
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);
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}
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// Page protection
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$content = $this->addTable( $content, $table );
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$content = $this->addHeader( $content, $this->msg( 'pageinfo-header-restrictions' )->text() );
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$table = '';
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// Page protection
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foreach ( $wgRestrictionTypes as $restrictionType ) {
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$protectionLevel = implode( ', ', $title->getRestrictions( $restrictionType ) );
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if ( $protectionLevel == '' ) {
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// Allow all users
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$message = $this->msg( 'protect-default' )->escaped();
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} else {
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// Administrators only
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$message = $this->msg( "protect-level-$protectionLevel" );
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if ( $message->isDisabled() ) {
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// Require "$1" permission
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$message = $this->msg( "protect-fallback", $protectionLevel )->parse();
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} else {
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$message = $message->escaped();
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}
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}
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$table = $this->addRow( $table,
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$this->msg( 'pageinfo-restriction',
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$this->msg( "restriction-$restrictionType" )->plain()
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)->parse(), $message
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);
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}
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// Edit history
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$content = $this->addTable( $content, $table );
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$content = $this->addHeader( $content, $this->msg( 'pageinfo-header-edits' )->text() );
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$table = '';
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$firstRev = $this->page->getOldestRevision();
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// Page creator
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$table = $this->addRow( $table,
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$this->msg( 'pageinfo-firstuser' )->escaped(),
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$firstRev->getUserText( Revision::FOR_THIS_USER, $user )
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);
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// Date of page creation
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$table = $this->addRow( $table,
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$this->msg( 'pageinfo-firsttime' )->escaped(),
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Linker::linkKnown(
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$title,
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$lang->userTimeAndDate( $firstRev->getTimestamp(), $user ),
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array(),
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array( 'oldid' => $firstRev->getId() )
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)
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);
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// Latest editor
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$table = $this->addRow( $table,
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$this->msg( 'pageinfo-lastuser' )->escaped(),
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$this->page->getUserText( Revision::FOR_THIS_USER, $user )
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);
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// Date of latest edit
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$table = $this->addRow( $table,
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$this->msg( 'pageinfo-lasttime' )->escaped(),
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Linker::linkKnown(
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$title,
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$lang->userTimeAndDate( $this->page->getTimestamp(), $user ),
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array(),
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array( 'oldid' => $this->page->getLatest() )
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)
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);
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// Total number of edits
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$table = $this->addRow( $table,
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$this->msg( 'pageinfo-edits' )->escaped(), $lang->formatNum( $pageInfo['edits'] )
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);
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// Total number of distinct authors
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$table = $this->addRow( $table,
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$this->msg( 'pageinfo-authors' )->escaped(), $lang->formatNum( $pageInfo['authors'] )
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);
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// Recent number of edits (within past 30 days)
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$table = $this->addRow( $table,
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$this->msg( 'pageinfo-recent-edits', $lang->formatDuration( $wgRCMaxAge ) )->escaped(),
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$lang->formatNum( $pageInfo['recent_edits'] )
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);
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// Recent number of distinct authors
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$table = $this->addRow( $table,
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$this->msg( 'pageinfo-recent-authors' )->escaped(), $lang->formatNum( $pageInfo['recent_authors'] )
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);
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$content = $this->addTable( $content, $table );
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// Array of MagicWord objects
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$magicWords = MagicWord::getDoubleUnderscoreArray();
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// Array of magic word IDs
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$wordIDs = $magicWords->names;
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// Array of IDs => localized magic words
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$localizedWords = $wgContLang->getMagicWords();
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$listItems = array();
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foreach ( $pageProperties as $property => $value ) {
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if ( in_array( $property, $wordIDs ) ) {
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$listItems[] = Html::element( 'li', array(), $localizedWords[$property][1] );
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}
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}
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$localizedList = Html::rawElement( 'ul', array(), implode( '', $listItems ) );
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$hiddenCategories = $this->page->getHiddenCategories();
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$transcludedTemplates = $title->getTemplateLinksFrom();
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if ( count( $listItems ) > 0
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|| count( $hiddenCategories ) > 0
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|| count( $transcludedTemplates ) > 0 ) {
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// Page properties
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$content = $this->addHeader( $content, $this->msg( 'pageinfo-header-properties' )->text() );
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$table = '';
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// Magic words
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if ( count( $listItems ) > 0 ) {
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$table = $this->addRow( $table,
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$this->msg( 'pageinfo-magic-words' )->numParams( count( $listItems ) )->escaped(),
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$localizedList
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);
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}
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// Hide "This page is a member of # hidden categories explanation
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$content .= Html::element( 'style', array(),
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'.mw-hiddenCategoriesExplanation { display: none; }' );
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// Hidden categories
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if ( count( $hiddenCategories ) > 0 ) {
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$table = $this->addRow( $table,
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$this->msg( 'pageinfo-hidden-categories' )
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->numParams( count( $hiddenCategories ) )->escaped(),
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Linker::formatHiddenCategories( $hiddenCategories )
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);
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}
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// Hide "Templates used on this page:" explanation
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$content .= Html::element( 'style', array(),
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'.mw-templatesUsedExplanation { display: none; }' );
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// Transcluded templates
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if ( count( $transcludedTemplates ) > 0 ) {
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$table = $this->addRow( $table,
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$this->msg( 'pageinfo-templates' )
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->numParams( count( $transcludedTemplates ) )->escaped(),
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Linker::formatTemplates( $transcludedTemplates )
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);
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}
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$content = $this->addTable( $content, $table );
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}
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// Footer
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if ( !$this->msg( 'pageinfo-footer' )->isDisabled() ) {
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$content .= $this->msg( 'pageinfo-footer' )->parse();
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}
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return $content;
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}
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/**
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* Returns page information that would be too "expensive" to retrieve by normal means.
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*
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* @param $title Title object
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* @param $canViewUnwatched bool
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* @param $disableCounter bool
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* @return array
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*/
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public static function pageCountInfo( $title, $canViewUnwatched, $disableCounter ) {
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global $wgRCMaxAge;
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wfProfileIn( __METHOD__ );
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$id = $title->getArticleID();
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$dbr = wfGetDB( DB_SLAVE );
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$result = array();
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if ( !$disableCounter ) {
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// Number of views
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$views = (int) $dbr->selectField(
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'page',
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'page_counter',
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array( 'page_id' => $id ),
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__METHOD__
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);
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$result['views'] = $views;
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}
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if ( $canViewUnwatched ) {
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// Number of page watchers
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$watchers = (int) $dbr->selectField(
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'watchlist',
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'COUNT(*)',
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array(
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'wl_namespace' => $title->getNamespace(),
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'wl_title' => $title->getDBkey(),
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),
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__METHOD__
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);
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$result['watchers'] = $watchers;
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}
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// Total number of edits
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$edits = (int) $dbr->selectField(
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'revision',
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'COUNT(rev_page)',
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array( 'rev_page' => $id ),
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__METHOD__
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);
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$result['edits'] = $edits;
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// Total number of distinct authors
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$authors = (int) $dbr->selectField(
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'revision',
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'COUNT(DISTINCT rev_user_text)',
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array( 'rev_page' => $id ),
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__METHOD__
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);
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$result['authors'] = $authors;
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// "Recent" threshold defined by $wgRCMaxAge
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$threshold = $dbr->timestamp( time() - $wgRCMaxAge );
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// Recent number of edits
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$edits = (int) $dbr->selectField(
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'revision',
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'COUNT(rev_page)',
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array(
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'rev_page' => $id ,
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"rev_timestamp >= $threshold"
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),
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__METHOD__
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);
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$result['recent_edits'] = $edits;
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// Recent number of distinct authors
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$authors = (int) $dbr->selectField(
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'revision',
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'COUNT(DISTINCT rev_user_text)',
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array(
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'rev_page' => $id,
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"rev_timestamp >= $threshold"
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),
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__METHOD__
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);
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$result['recent_authors'] = $authors;
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// Subpages (if enabled)
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if ( MWNamespace::hasSubpages( $title->getNamespace() ) ) {
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$conds = array( 'page_namespace' => $title->getNamespace() );
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$conds[] = 'page_title ' . $dbr->buildLike( $title->getDBkey() . '/', $dbr->anyString() );
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// Subpages of this page (redirects)
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$conds['page_is_redirect'] = 1;
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$result['subpages']['redirects'] = (int) $dbr->selectField(
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'page',
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'COUNT(page_id)',
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$conds,
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__METHOD__ );
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// Subpages of this page (non-redirects)
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$conds['page_is_redirect'] = 0;
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$result['subpages']['nonredirects'] = (int) $dbr->selectField(
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'page',
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'COUNT(page_id)',
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$conds,
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__METHOD__
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);
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// Subpages of this page (total)
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$result['subpages']['total'] = $result['subpages']['redirects']
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+ $result['subpages']['nonredirects'];
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}
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wfProfileOut( __METHOD__ );
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return $result;
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}
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/**
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* Adds a header to the content that will be added to the output.
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*
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* @param $content string The content that will be added to the output
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* @param $header string The value of the header
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* @return string The content with the header added
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*/
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protected function addHeader( $content, $header ) {
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return $content . Html::element( 'h2', array(), $header );
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}
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/**
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* Adds a row to a table that will be added to the content.
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*
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* @param $table string The table that will be added to the content
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* @param $name string The name of the row
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* @param $value string The value of the row
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* @return string The table with the row added
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*/
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protected function addRow( $table, $name, $value ) {
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return $table . Html::rawElement( 'tr', array(),
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Html::rawElement( 'td', array( 'valign' => 'top' ), $name ) .
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Html::rawElement( 'td', array(), $value )
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);
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}
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/**
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* Adds a table to the content that will be added to the output.
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*
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* @param $content string The content that will be added to the output
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* @param $table string The table
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* @return string The content with the table added
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*/
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protected function addTable( $content, $table ) {
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return $content . Html::rawElement( 'table', array( 'class' => 'wikitable mw-page-info' ),
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$table );
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}
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/**
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* Returns the description that goes below the <h1> tag.
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*
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* @return string
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*/
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protected function getDescription() {
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return '';
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}
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/**
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* Returns the name that goes in the <h1> page title.
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*
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* @return string
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*/
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protected function getPageTitle() {
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return $this->msg( 'pageinfo-title', $this->getTitle()->getPrefixedText() )->text();
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}
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}
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