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<?php
/**
* 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
*/
namespace MediaWiki\RecentChanges;
use InvalidArgumentException;
use MediaWiki\Html\FormOptions;
use MediaWiki\SpecialPage\ChangesListSpecialPage;
use Wikimedia\Rdbms\IReadableDatabase;
/**
* Represents a filter group with multiple string options. They are passed to the server as
* a single form parameter separated by a delimiter. The parameter name is the
* group name. E.g. groupname=opt1;opt2 .
*
* If all options are selected they are replaced by the term "all".
*
* There is also a single DB query modification for the whole group.
*
* @since 1.29
* @ingroup RecentChanges
* @author Matthew Flaschen
*/
class ChangesListStringOptionsFilterGroup extends ChangesListFilterGroup {
/**
* Type marker, used by JavaScript
*/
public const TYPE = 'string_options';
/**
* Delimiter
*/
public const SEPARATOR = ';';
/**
* Signifies that all options in the group are selected.
*/
public const ALL = 'all';
/**
* Signifies that no options in the group are selected, meaning the group has no effect.
*
* For full-coverage groups, this is the same as ALL if all filters are allowed.
* For others, it is not.
*/
public const NONE = '';
/**
* Default parameter value
*
* @var string
*/
protected $defaultValue;
/**
* Callable used to do the actual query modification; see constructor
*
* @var callable
*/
protected $queryCallable;
/**
* Create a new filter group with the specified configuration
*
* @param array $groupDefinition Configuration of group
* * $groupDefinition['name'] string Group name
* * $groupDefinition['title'] string i18n key for title (optional, can be omitted
* only if none of the filters in the group display in the structured UI)
* * $groupDefinition['priority'] int Priority integer. Higher means higher in the
* group list.
* * $groupDefinition['filters'] array Numeric array of filter definitions, each of which
* is an associative array to be passed to the filter constructor. However,
* 'priority' is optional for the filters. Any filter that has priority unset
* will be put to the bottom, in the order given.
* * $groupDefinition['default'] string Default for group.
* * $groupDefinition['isFullCoverage'] bool Whether the group is full coverage;
* if true, this means that checking every item in the group means no
* changes list entries are filtered out.
* * $groupDefinition['queryCallable'] callable Callable accepting parameters:
* * string $specialPageClassName Class name of current special page
* * IContextSource $context Context, for e.g. user
* * IDatabase $dbr Database, for addQuotes, makeList, and similar
* * array &$tables Array of tables; see IDatabase::select $table
* * array &$fields Array of fields; see IDatabase::select $vars
* * array &$conds Array of conditions; see IDatabase::select $conds
* * array &$query_options Array of query options; see IDatabase::select $options
* * array &$join_conds Array of join conditions; see IDatabase::select $join_conds
* * array $selectedValues The allowed and requested values, lower-cased and sorted
* * $groupDefinition['whatsThisHeader'] string i18n key for header of "What's
* This" popup (optional).
* * $groupDefinition['whatsThisBody'] string i18n key for body of "What's This"
* popup (optional).
* * $groupDefinition['whatsThisUrl'] string URL for main link of "What's This"
* popup (optional).
* * $groupDefinition['whatsThisLinkText'] string i18n key of text for main link of
* "What's This" popup (optional).
*/
public function __construct( array $groupDefinition ) {
if ( !isset( $groupDefinition['isFullCoverage'] ) ) {
throw new InvalidArgumentException( 'You must specify isFullCoverage' );
}
$groupDefinition['type'] = self::TYPE;
parent::__construct( $groupDefinition );
$this->queryCallable = $groupDefinition['queryCallable'];
if ( isset( $groupDefinition['default'] ) ) {
$this->setDefault( $groupDefinition['default'] );
} else {
throw new InvalidArgumentException( 'You must specify a default' );
}
}
/**
* Sets default of filter group.
*
* @param string $defaultValue
*/
public function setDefault( $defaultValue ) {
$this->defaultValue = $defaultValue;
}
/**
* Gets default of filter group
*
* @return string
*/
public function getDefault() {
return $this->defaultValue;
}
/**
* @inheritDoc
*/
protected function createFilter( array $filterDefinition ) {
return new ChangesListStringOptionsFilter( $filterDefinition );
}
/**
* Registers a filter in this group
*
* @param ChangesListStringOptionsFilter $filter
* @suppress PhanParamSignaturePHPDocMismatchHasParamType,PhanParamSignatureMismatch
*/
public function registerFilter( ChangesListStringOptionsFilter $filter ) {
$this->filters[$filter->getName()] = $filter;
}
/**
* @inheritDoc
*/
public function modifyQuery( IReadableDatabase $dbr, ChangesListSpecialPage $specialPage,
&$tables, &$fields, &$conds, &$query_options, &$join_conds,
FormOptions $opts, $isStructuredFiltersEnabled
) {
// STRING_OPTIONS filter groups are exclusively active on Structured UI
if ( !$isStructuredFiltersEnabled ) {
return;
}
$value = $opts[ $this->getName() ];
$allowedFilterNames = [];
foreach ( $this->filters as $filter ) {
$allowedFilterNames[] = $filter->getName();
}
if ( $value === self::ALL ) {
$selectedValues = $allowedFilterNames;
} else {
$selectedValues = explode( self::SEPARATOR, strtolower( $value ) );
// remove values that are not recognized or not currently allowed
$selectedValues = array_intersect(
$selectedValues,
$allowedFilterNames
);
}
// If there are now no values, because all are disallowed or invalid (also,
// the user may not have selected any), this is a no-op.
// If everything is unchecked, the group always has no effect, regardless
// of full-coverage.
if ( count( $selectedValues ) === 0 ) {
return;
}
sort( $selectedValues );
( $this->queryCallable )(
get_class( $specialPage ),
$specialPage->getContext(),
$dbr,
$tables,
$fields,
$conds,
$query_options,
$join_conds,
$selectedValues
);
}
/**
* @inheritDoc
*/
public function getJsData() {
$output = parent::getJsData();
$output['separator'] = self::SEPARATOR;
$output['default'] = $this->getDefault();
return $output;
}
/**
* @inheritDoc
*/
public function addOptions( FormOptions $opts, $allowDefaults, $isStructuredFiltersEnabled ) {
$opts->add( $this->getName(), $allowDefaults ? $this->getDefault() : '' );
}
}
/** @deprecated class alias since 1.44 */
class_alias( ChangesListStringOptionsFilterGroup::class, 'ChangesListStringOptionsFilterGroup' );