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<?php
/**
* Implements Special:Prefixindex
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
* @ingroup SpecialPage
*/
use MediaWiki\MediaWikiServices;
/**
* Implements Special:Prefixindex
*
* @ingroup SpecialPage
*/
class SpecialPrefixindex extends SpecialAllPages {
/**
* Whether to remove the searched prefix from the displayed link. Useful
* for inclusion of a set of sub pages in a root page.
*/
protected $stripPrefix = false;
protected $hideRedirects = false;
// Inherit $maxPerPage
function __construct() {
parent::__construct( 'Prefixindex' );
}
/**
* Entry point : initialise variables and call subfunctions.
* @param string $par Becomes "FOO" when called like Special:Prefixindex/FOO (default null)
*/
function execute( $par ) {
global $wgContLang;
$this->setHeaders();
$this->outputHeader();
$out = $this->getOutput();
$out->addModuleStyles( 'mediawiki.special' );
# GET values
$request = $this->getRequest();
$from = $request->getVal( 'from', '' );
$prefix = $request->getVal( 'prefix', '' );
$ns = $request->getIntOrNull( 'namespace' );
$namespace = (int)$ns; // if no namespace given, use 0 (NS_MAIN).
$this->hideRedirects = $request->getBool( 'hideredirects', $this->hideRedirects );
$this->stripPrefix = $request->getBool( 'stripprefix', $this->stripPrefix );
$namespaces = $wgContLang->getNamespaces();
$out->setPageTitle(
( $namespace > 0 && array_key_exists( $namespace, $namespaces ) )
? $this->msg( 'prefixindex-namespace', str_replace( '_', ' ', $namespaces[$namespace] ) )
: $this->msg( 'prefixindex' )
);
$showme = '';
if ( $par !== null ) {
$showme = $par;
} elseif ( $prefix != '' ) {
$showme = $prefix;
} elseif ( $from != '' && $ns === null ) {
// For back-compat with Special:Allpages
// Don't do this if namespace is passed, so paging works when doing NS views.
$showme = $from;
}
// Bug 27864: if transcluded, show all pages instead of the form.
if ( $this->including() || $showme != '' || $ns !== null ) {
$this->showPrefixChunk( $namespace, $showme, $from );
} else {
$out->addHTML( $this->namespacePrefixForm( $namespace, null ) );
}
}
/**
* HTML for the top form
* @param int $namespace A namespace constant (default NS_MAIN).
* @param string $from DbKey we are starting listing at.
* @return string
*/
protected function namespacePrefixForm( $namespace = NS_MAIN, $from = '' ) {
$out = Xml::openElement( 'div', [ 'class' => 'namespaceoptions' ] );
$out .= Xml::openElement(
'form',
[ 'method' => 'get', 'action' => $this->getConfig()->get( 'Script' ) ]
);
$out .= Html::hidden( 'title', $this->getPageTitle()->getPrefixedText() );
$out .= Xml::openElement( 'fieldset' );
$out .= Xml::element( 'legend', null, $this->msg( 'allpages' )->text() );
$out .= Xml::openElement( 'table', [ 'id' => 'nsselect', 'class' => 'allpages' ] );
$out .= "<tr>
<td class='mw-label'>" .
Xml::label( $this->msg( 'allpagesprefix' )->text(), 'nsfrom' ) .
"</td>
<td class='mw-input'>" .
Xml::input( 'prefix', 30, str_replace( '_', ' ', $from ), [ 'id' => 'nsfrom' ] ) .
"</td>
</tr>
<tr>
<td class='mw-label'>" .
Xml::label( $this->msg( 'namespace' )->text(), 'namespace' ) .
"</td>
<td class='mw-input'>" .
Html::namespaceSelector( [
'selected' => $namespace,
], [
'name' => 'namespace',
'id' => 'namespace',
'class' => 'namespaceselector',
] ) .
Xml::checkLabel(
$this->msg( 'allpages-hide-redirects' )->text(),
'hideredirects',
'hideredirects',
$this->hideRedirects
) . ' ' .
Xml::checkLabel(
$this->msg( 'prefixindex-strip' )->text(),
'stripprefix',
'stripprefix',
$this->stripPrefix
) . ' ' .
Xml::submitButton( $this->msg( 'prefixindex-submit' )->text() ) .
"</td>
</tr>";
$out .= Xml::closeElement( 'table' );
$out .= Xml::closeElement( 'fieldset' );
$out .= Xml::closeElement( 'form' );
$out .= Xml::closeElement( 'div' );
return $out;
}
/**
* @param int $namespace Default NS_MAIN
* @param string $prefix
* @param string $from List all pages from this name (default false)
*/
protected function showPrefixChunk( $namespace = NS_MAIN, $prefix, $from = null ) {
global $wgContLang;
if ( $from === null ) {
$from = $prefix;
}
$fromList = $this->getNamespaceKeyAndText( $namespace, $from );
$prefixList = $this->getNamespaceKeyAndText( $namespace, $prefix );
$namespaces = $wgContLang->getNamespaces();
$res = null;
$n = 0;
$nextRow = null;
if ( !$prefixList || !$fromList ) {
$out = $this->msg( 'allpagesbadtitle' )->parseAsBlock();
} elseif ( !array_key_exists( $namespace, $namespaces ) ) {
// Show errormessage and reset to NS_MAIN
$out = $this->msg( 'allpages-bad-ns', $namespace )->parse();
$namespace = NS_MAIN;
} else {
list( $namespace, $prefixKey, $prefix ) = $prefixList;
list( /* $fromNS */, $fromKey, ) = $fromList;
# ## @todo FIXME: Should complain if $fromNs != $namespace
$dbr = wfGetDB( DB_REPLICA );
$conds = [
'page_namespace' => $namespace,
'page_title' . $dbr->buildLike( $prefixKey, $dbr->anyString() ),
'page_title >= ' . $dbr->addQuotes( $fromKey ),
];
if ( $this->hideRedirects ) {
$conds['page_is_redirect'] = 0;
}
$res = $dbr->select( 'page',
array_merge(
[ 'page_namespace', 'page_title' ],
LinkCache::getSelectFields()
),
$conds,
__METHOD__,
[
'ORDER BY' => 'page_title',
'LIMIT' => $this->maxPerPage + 1,
'USE INDEX' => 'name_title',
]
);
// @todo FIXME: Side link to previous
if ( $res->numRows() > 0 ) {
$out = Html::openElement( 'ul', [ 'class' => 'mw-prefixindex-list' ] );
$linkCache = MediaWikiServices::getInstance()->getLinkCache();
$prefixLength = strlen( $prefix );
foreach ( $res as $row ) {
if ( $n >= $this->maxPerPage ) {
$nextRow = $row;
break;
}
$title = Title::newFromRow( $row );
// Make sure it gets into LinkCache
$linkCache->addGoodLinkObjFromRow( $title, $row );
$displayed = $title->getText();
// Try not to generate unclickable links
if ( $this->stripPrefix && $prefixLength !== strlen( $displayed ) ) {
$displayed = substr( $displayed, $prefixLength );
}
$link = ( $title->isRedirect() ? '<div class="allpagesredirect">' : '' ) .
Linker::linkKnown(
$title,
htmlspecialchars( $displayed )
) .
( $title->isRedirect() ? '</div>' : '' );
$out .= "<li>$link</li>\n";
$n++;
}
$out .= Html::closeElement( 'ul' );
if ( $res->numRows() > 2 ) {
// Only apply CSS column styles if there's more than 2 entries.
// Otherwise rendering is broken as "mw-prefixindex-body"'s CSS column count is 3.
$out = Html::rawElement( 'div', [ 'class' => 'mw-prefixindex-body' ], $out );
}
} else {
$out = '';
}
}
$output = $this->getOutput();
if ( $this->including() ) {
// We don't show the nav-links and the form when included into other
// pages so let's just finish here.
$output->addHTML( $out );
return;
}
$topOut = $this->namespacePrefixForm( $namespace, $prefix );
if ( $res && ( $n == $this->maxPerPage ) && $nextRow ) {
$query = [
'from' => $nextRow->page_title,
'prefix' => $prefix,
'hideredirects' => $this->hideRedirects,
'stripprefix' => $this->stripPrefix,
];
if ( $namespace || $prefix == '' ) {
// Keep the namespace even if it's 0 for empty prefixes.
// This tells us we're not just a holdover from old links.
$query['namespace'] = $namespace;
}
$nextLink = Linker::linkKnown(
$this->getPageTitle(),
$this->msg( 'nextpage', str_replace( '_', ' ', $nextRow->page_title ) )->escaped(),
[],
$query
);
// Link shown at the top of the page below the form
$topOut .= Html::rawElement( 'div',
[ 'class' => 'mw-prefixindex-nav' ],
$nextLink
);
// Link shown at the footer
$out .= "\n" . Html::element( 'hr' ) .
Html::rawElement(
'div',
[ 'class' => 'mw-prefixindex-nav' ],
$nextLink
);
}
$output->addHTML( $topOut . $out );
}
/**
* Return an array of subpages beginning with $search that this special page will accept.
*
* @param string $search Prefix to search for
* @param int $limit Maximum number of results to return (usually 10)
* @param int $offset Number of results to skip (usually 0)
* @return string[] Matching subpages
*/
public function prefixSearchSubpages( $search, $limit, $offset ) {
return $this->prefixSearchString( $search, $limit, $offset );
}
protected function getGroupName() {
return 'pages';
}
}