mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/CategoryTree
synced 2024-11-14 19:35:11 +00:00
801 lines
21 KiB
PHP
801 lines
21 KiB
PHP
<?php
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/**
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* Core functions for the CategoryTree extension, an AJAX based gadget
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* to display the category structure of a wiki
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*
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* @file
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* @ingroup Extensions
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* @author Daniel Kinzler, brightbyte.de
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* @copyright © 2006-2007 Daniel Kinzler
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* @license GNU General Public Licence 2.0 or later
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*/
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class CategoryTree {
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public $mOptions = [];
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/**
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* @param $options array
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*/
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function __construct( $options ) {
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global $wgCategoryTreeDefaultOptions;
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// ensure default values and order of options.
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// Order may become important, it may influence the cache key!
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foreach ( $wgCategoryTreeDefaultOptions as $option => $default ) {
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if ( isset( $options[$option] ) && !is_null( $options[$option] ) ) {
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$this->mOptions[$option] = $options[$option];
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} else {
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$this->mOptions[$option] = $default;
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}
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}
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$this->mOptions['mode'] = self::decodeMode( $this->mOptions['mode'] );
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if ( $this->mOptions['mode'] == CategoryTreeMode::PARENTS ) {
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// namespace filter makes no sense with CategoryTreeMode::PARENTS
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$this->mOptions['namespaces'] = false;
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}
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$this->mOptions['hideprefix'] = self::decodeHidePrefix( $this->mOptions['hideprefix'] );
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$this->mOptions['showcount'] = self::decodeBoolean( $this->mOptions['showcount'] );
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$this->mOptions['namespaces'] = self::decodeNamespaces( $this->mOptions['namespaces'] );
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if ( $this->mOptions['namespaces'] ) {
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# automatically adjust mode to match namespace filter
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if ( count( $this->mOptions['namespaces'] ) === 1
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&& $this->mOptions['namespaces'][0] == NS_CATEGORY ) {
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$this->mOptions['mode'] = CategoryTreeMode::CATEGORIES;
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} elseif ( !in_array( NS_FILE, $this->mOptions['namespaces'] ) ) {
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$this->mOptions['mode'] = CategoryTreeMode::PAGES;
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} else {
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$this->mOptions['mode'] = CategoryTreeMode::ALL;
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}
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}
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}
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/**
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* @param $name string
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* @return mixed
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*/
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function getOption( $name ) {
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return $this->mOptions[$name];
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}
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/**
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* @return bool
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*/
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function isInverse() {
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return $this->getOption( 'mode' ) == CategoryTreeMode::PARENTS;
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}
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/**
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* @param $nn
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* @return array|bool
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*/
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static function decodeNamespaces( $nn ) {
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global $wgContLang;
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if ( $nn === false || is_null( $nn ) ) {
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return false;
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}
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if ( !is_array( $nn ) ) {
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$nn = preg_split( '![\s#:|]+!', $nn );
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}
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$namespaces = [];
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foreach ( $nn as $n ) {
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if ( is_int( $n ) ) {
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$ns = $n;
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} else {
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$n = trim( $n );
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if ( $n === '' ) {
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continue;
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}
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$lower = strtolower( $n );
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if ( is_numeric( $n ) ) {
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$ns = (int)$n;
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} elseif ( $n == '-' || $n == '_' || $n == '*' || $lower == 'main' ) {
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$ns = NS_MAIN;
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} else {
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$ns = $wgContLang->getNsIndex( $n );
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}
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}
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if ( is_int( $ns ) ) {
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$namespaces[] = $ns;
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}
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}
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sort( $namespaces ); # get elements into canonical order
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return $namespaces;
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}
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/**
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* @param $mode
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* @return int|string
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*/
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static function decodeMode( $mode ) {
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global $wgCategoryTreeDefaultOptions;
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if ( is_null( $mode ) ) {
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return $wgCategoryTreeDefaultOptions['mode'];
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}
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if ( is_int( $mode ) ) {
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return $mode;
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}
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$mode = trim( strtolower( $mode ) );
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if ( is_numeric( $mode ) ) {
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return (int)$mode;
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}
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if ( $mode == 'all' ) {
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$mode = CategoryTreeMode::ALL;
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} elseif ( $mode == 'pages' ) {
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$mode = CategoryTreeMode::PAGES;
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} elseif ( $mode == 'categories' || $mode == 'sub' ) {
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$mode = CategoryTreeMode::CATEGORIES;
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} elseif ( $mode == 'parents' || $mode == 'super' || $mode == 'inverse' ) {
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$mode = CategoryTreeMode::PARENTS;
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} elseif ( $mode == 'default' ) {
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$mode = $wgCategoryTreeDefaultOptions['mode'];
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}
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return (int)$mode;
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}
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/**
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* Helper function to convert a string to a boolean value.
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* Perhaps make this a global function in MediaWiki proper
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* @param $value
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* @return bool|null|string
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*/
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static function decodeBoolean( $value ) {
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if ( is_null( $value ) ) {
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return null;
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}
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if ( is_bool( $value ) ) {
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return $value;
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}
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if ( is_int( $value ) ) {
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return ( $value > 0 );
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}
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$value = trim( strtolower( $value ) );
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if ( is_numeric( $value ) ) {
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return ( (int)$value > 0 );
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}
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if ( $value == 'yes' || $value == 'y'
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|| $value == 'true' || $value == 't' || $value == 'on'
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) {
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return true;
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} elseif ( $value == 'no' || $value == 'n'
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|| $value == 'false' || $value == 'f' || $value == 'off'
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) {
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return false;
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} elseif ( $value == 'null' || $value == 'default' || $value == 'none' || $value == 'x' ) {
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return null;
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} else {
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return false;
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}
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}
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/**
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* @param $value
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* @return int|string
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*/
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static function decodeHidePrefix( $value ) {
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global $wgCategoryTreeDefaultOptions;
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if ( is_null( $value ) ) {
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return $wgCategoryTreeDefaultOptions['hideprefix'];
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}
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if ( is_int( $value ) ) {
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return $value;
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}
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if ( $value === true ) {
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return CategoryTreeHidePrefix::ALWAYS;
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}
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if ( $value === false ) {
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return CategoryTreeHidePrefix::NEVER;
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}
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$value = trim( strtolower( $value ) );
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if ( $value == 'yes' || $value == 'y'
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|| $value == 'true' || $value == 't' || $value == 'on'
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) {
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return CategoryTreeHidePrefix::ALWAYS;
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} elseif ( $value == 'no' || $value == 'n'
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|| $value == 'false' || $value == 'f' || $value == 'off'
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) {
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return CategoryTreeHidePrefix::NEVER;
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} elseif ( $value == 'always' ) {
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return CategoryTreeHidePrefix::ALWAYS;
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} elseif ( $value == 'never' ) {
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return CategoryTreeHidePrefix::NEVER;
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} elseif ( $value == 'auto' ) {
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return CategoryTreeHidePrefix::AUTO;
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} elseif ( $value == 'categories' || $value == 'category' || $value == 'smart' ) {
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return CategoryTreeHidePrefix::CATEGORIES;
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} else {
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return $wgCategoryTreeDefaultOptions['hideprefix'];
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}
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}
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/**
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* Add ResourceLoader modules to the OutputPage object
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* @param OutputPage $outputPage
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*/
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static function setHeaders( $outputPage ) {
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# Add the modules
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$outputPage->addModuleStyles( 'ext.categoryTree.css' );
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$outputPage->addModules( 'ext.categoryTree' );
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}
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/**
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* @param $options
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* @param $enc
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* @return mixed
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* @throws Exception
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*/
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static function encodeOptions( $options, $enc ) {
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if ( $enc == 'mode' || $enc == '' ) {
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$opt = $options['mode'];
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} elseif ( $enc == 'json' ) {
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$opt = FormatJson::encode( $options );
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} else {
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throw new Exception( 'Unknown encoding for CategoryTree options: ' . $enc );
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}
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return $opt;
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}
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/**
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* @param $depth null
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* @return string
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*/
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function getOptionsAsCacheKey( $depth = null ) {
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$key = "";
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foreach ( $this->mOptions as $k => $v ) {
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if ( is_array( $v ) ) {
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$v = implode( '|', $v );
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}
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$key .= $k . ':' . $v . ';';
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}
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if ( !is_null( $depth ) ) {
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$key .= ";depth=" . $depth;
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}
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return $key;
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}
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/**
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* @param $depth int|null
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* @return mixed
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*/
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function getOptionsAsJsStructure( $depth = null ) {
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if ( !is_null( $depth ) ) {
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$opt = $this->mOptions;
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$opt['depth'] = $depth;
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$s = self::encodeOptions( $opt, 'json' );
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} else {
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$s = self::encodeOptions( $this->mOptions, 'json' );
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}
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return $s;
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}
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/**
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* @return string
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*/
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function getOptionsAsUrlParameters() {
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return http_build_query( $this->mOptions );
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}
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/**
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* Custom tag implementation. This is called by CategoryTreeHooks::parserHook, which is used to
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* load CategoryTreeFunctions.php on demand.
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* @param $parser Parser
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* @param $category
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* @param $hideroot bool
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* @param $attr
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* @param $depth int
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* @param $allowMissing bool
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* @return bool|string
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*/
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function getTag( $parser, $category, $hideroot = false, $attr, $depth = 1,
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$allowMissing = false
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) {
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global $wgCategoryTreeDisableCache;
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$category = trim( $category );
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if ( $category === '' ) {
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return false;
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}
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if ( $parser ) {
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if ( is_bool( $wgCategoryTreeDisableCache ) && $wgCategoryTreeDisableCache === true ) {
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$parser->disableCache();
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} elseif ( is_int( $wgCategoryTreeDisableCache ) ) {
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$parser->getOutput()->updateCacheExpiry( $wgCategoryTreeDisableCache );
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}
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}
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$title = self::makeTitle( $category );
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if ( $title === false || $title === null ) {
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return false;
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}
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if ( isset( $attr['class'] ) ) {
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$attr['class'] .= ' CategoryTreeTag';
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} else {
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$attr['class'] = ' CategoryTreeTag';
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}
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$attr['data-ct-mode'] = $this->mOptions['mode'];
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$attr['data-ct-options'] = $this->getOptionsAsJsStructure();
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$html = '';
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$html .= Html::openElement( 'div', $attr );
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if ( !$allowMissing && !$title->getArticleID() ) {
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$html .= Html::openElement( 'span', [ 'class' => 'CategoryTreeNotice' ] );
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if ( $parser ) {
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$html .= $parser->recursiveTagParse(
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wfMessage( 'categorytree-not-found', $category )->plain() );
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} else {
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$html .= wfMessage( 'categorytree-not-found', $category )->parse();
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}
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$html .= Html::closeElement( 'span' );
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} else {
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if ( !$hideroot ) {
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$html .= $this->renderNode( $title, $depth, false );
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} else {
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$html .= $this->renderChildren( $title, $depth );
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}
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}
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$html .= Xml::closeElement( 'div' );
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$html .= "\n\t\t";
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return $html;
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}
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/**
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* Returns a string with an HTML representation of the children of the given category.
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* @param $title Title
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* @param $depth int
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* @return string
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*/
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function renderChildren( $title, $depth = 1 ) {
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global $wgCategoryTreeMaxChildren, $wgCategoryTreeUseCategoryTable;
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if ( $title->getNamespace() != NS_CATEGORY ) {
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// Non-categories can't have children. :)
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return '';
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}
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$dbr = wfGetDB( DB_SLAVE );
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$inverse = $this->isInverse();
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$mode = $this->getOption( 'mode' );
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$namespaces = $this->getOption( 'namespaces' );
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$tables = [ 'page', 'categorylinks' ];
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$fields = [ 'page_id', 'page_namespace', 'page_title',
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'page_is_redirect', 'page_len', 'page_latest', 'cl_to',
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'cl_from' ];
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$where = [];
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$joins = [];
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$options = [ 'ORDER BY' => 'cl_type, cl_sortkey', 'LIMIT' => $wgCategoryTreeMaxChildren ];
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if ( $inverse ) {
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$joins['categorylinks'] = [ 'RIGHT JOIN', [
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'cl_to = page_title', 'page_namespace' => NS_CATEGORY
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] ];
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$where['cl_from'] = $title->getArticleID();
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} else {
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$joins['categorylinks'] = [ 'JOIN', 'cl_from = page_id' ];
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$where['cl_to'] = $title->getDBkey();
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$options['USE INDEX']['categorylinks'] = 'cl_sortkey';
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# namespace filter.
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if ( $namespaces ) {
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// NOTE: we assume that the $namespaces array contains only integers!
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// decodeNamepsaces makes it so.
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$where['page_namespace'] = $namespaces;
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} elseif ( $mode != CategoryTreeMode::ALL ) {
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if ( $mode == CategoryTreeMode::PAGES ) {
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$where['cl_type'] = [ 'page', 'subcat' ];
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} else {
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$where['cl_type'] = 'subcat';
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}
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}
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}
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# fetch member count if possible
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$doCount = !$inverse && $wgCategoryTreeUseCategoryTable;
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if ( $doCount ) {
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$tables = array_merge( $tables, [ 'category' ] );
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$fields = array_merge( $fields, [
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'cat_id', 'cat_title', 'cat_subcats', 'cat_pages', 'cat_files'
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] );
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$joins['category'] = [ 'LEFT JOIN', [
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'cat_title = page_title', 'page_namespace' => NS_CATEGORY ]
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];
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}
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$res = $dbr->select( $tables, $fields, $where, __METHOD__, $options, $joins );
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# collect categories separately from other pages
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$categories = '';
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$other = '';
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foreach ( $res as $row ) {
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# NOTE: in inverse mode, the page record may be null, because we use a right join.
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# happens for categories with no category page (red cat links)
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if ( $inverse && $row->page_title === null ) {
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$t = Title::makeTitle( NS_CATEGORY, $row->cl_to );
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} else {
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# TODO: translation support; ideally added to Title object
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$t = Title::newFromRow( $row );
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}
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$cat = null;
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if ( $doCount && $row->page_namespace == NS_CATEGORY ) {
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$cat = Category::newFromRow( $row, $t );
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}
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$s = $this->renderNodeInfo( $t, $cat, $depth - 1 );
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$s .= "\n\t\t";
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if ( $row->page_namespace == NS_CATEGORY ) {
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$categories .= $s;
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} else {
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$other .= $s;
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}
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}
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return $categories . $other;
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}
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/**
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* Returns a string with an HTML representation of the parents of the given category.
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* @param $title Title
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* @return string
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*/
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function renderParents( $title ) {
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global $wgCategoryTreeMaxChildren;
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$dbr = wfGetDB( DB_SLAVE );
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$res = $dbr->select(
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'categorylinks',
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[
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'page_namespace' => NS_CATEGORY,
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'page_title' => 'cl_to',
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],
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[ 'cl_from' => $title->getArticleID() ],
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__METHOD__,
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[
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'LIMIT' => $wgCategoryTreeMaxChildren,
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'ORDER BY' => 'cl_to'
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]
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);
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$special = SpecialPage::getTitleFor( 'CategoryTree' );
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$s = '';
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foreach ( $res as $row ) {
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$t = Title::newFromRow( $row );
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$label = htmlspecialchars( $t->getText() );
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$wikiLink = $special->getLocalURL( 'target=' . $t->getPartialURL() .
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'&' . $this->getOptionsAsUrlParameters() );
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if ( $s !== '' ) {
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$s .= wfMessage( 'pipe-separator' )->escaped();
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}
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$s .= Xml::openElement( 'span', [ 'class' => 'CategoryTreeItem' ] );
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$s .= Xml::openElement( 'a', [ 'class' => 'CategoryTreeLabel', 'href' => $wikiLink ] )
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. $label . Xml::closeElement( 'a' );
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$s .= Xml::closeElement( 'span' );
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$s .= "\n\t\t";
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}
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return $s;
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}
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/**
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* Returns a string with a HTML represenation of the given page.
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* @param $title Title
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* @param int $children
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* @return string
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*/
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function renderNode( $title, $children = 0 ) {
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global $wgCategoryTreeUseCategoryTable;
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if ( $wgCategoryTreeUseCategoryTable && $title->getNamespace() == NS_CATEGORY
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&& !$this->isInverse()
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) {
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$cat = Category::newFromTitle( $title );
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} else {
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$cat = null;
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}
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return $this->renderNodeInfo( $title, $cat, $children );
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}
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/**
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* Returns a string with a HTML represenation of the given page.
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* $info must be an associative array, containing at least a Title object under the 'title' key.
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* @param $title Title
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* @param $cat Category
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* @param $children int
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* @return string
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*/
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function renderNodeInfo( $title, $cat, $children = 0 ) {
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$mode = $this->getOption( 'mode' );
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$ns = $title->getNamespace();
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$key = $title->getDBkey();
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$hideprefix = $this->getOption( 'hideprefix' );
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if ( $hideprefix == CategoryTreeHidePrefix::ALWAYS ) {
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$hideprefix = true;
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} elseif ( $hideprefix == CategoryTreeHidePrefix::AUTO ) {
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$hideprefix = ( $mode == CategoryTreeMode::CATEGORIES );
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} elseif ( $hideprefix == CategoryTreeHidePrefix::CATEGORIES ) {
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$hideprefix = ( $ns == NS_CATEGORY );
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} else {
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$hideprefix = true;
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}
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// when showing only categories, omit namespace in label unless we explicitely defined the
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// configuration setting
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// patch contributed by Manuel Schneider <manuel.schneider@wikimedia.ch>, Bug 8011
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if ( $hideprefix ) {
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$label = htmlspecialchars( $title->getText() );
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} else {
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$label = htmlspecialchars( $title->getPrefixedText() );
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}
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$labelClass = 'CategoryTreeLabel ' . ' CategoryTreeLabelNs' . $ns;
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if ( !$title->getArticleID() ) {
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$labelClass .= ' new';
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$wikiLink = $title->getLocalURL( 'action=edit&redlink=1' );
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} else {
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$wikiLink = $title->getLocalURL();
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}
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if ( $ns == NS_CATEGORY ) {
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$labelClass .= ' CategoryTreeLabelCategory';
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} else {
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$labelClass .= ' CategoryTreeLabelPage';
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}
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if ( ( $ns % 2 ) > 0 ) {
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$labelClass .= ' CategoryTreeLabelTalk';
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}
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$count = false;
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$s = '';
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# NOTE: things in CategoryTree.js rely on the exact order of tags!
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# Specifically, the CategoryTreeChildren div must be the first
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# sibling with nodeName = DIV of the grandparent of the expland link.
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$s .= Xml::openElement( 'div', [ 'class' => 'CategoryTreeSection' ] );
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$s .= Xml::openElement( 'div', [ 'class' => 'CategoryTreeItem' ] );
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$attr = [ 'class' => 'CategoryTreeBullet' ];
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if ( $ns == NS_CATEGORY ) {
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if ( $cat ) {
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if ( $mode == CategoryTreeMode::CATEGORIES ) {
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$count = intval( $cat->getSubcatCount() );
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} elseif ( $mode == CategoryTreeMode::PAGES ) {
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$count = intval( $cat->getPageCount() ) - intval( $cat->getFileCount() );
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} else {
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$count = intval( $cat->getPageCount() );
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}
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}
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if ( $count === 0 ) {
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$bullet = wfMessage( 'categorytree-empty-bullet' )->plain() . ' ';
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$attr['class'] = 'CategoryTreeEmptyBullet';
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} else {
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$linkattr = [];
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$linkattr[ 'class' ] = "CategoryTreeToggle";
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$linkattr['style'] = 'display: none;'; // Unhidden by JS
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$linkattr['data-ct-title'] = $key;
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$tag = 'span';
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if ( $children == 0 ) {
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$txt = wfMessage( 'categorytree-expand-bullet' )->plain();
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$linkattr[ 'title' ] = wfMessage( 'categorytree-expand' )->plain();
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$linkattr[ 'data-ct-state' ] = 'collapsed';
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} else {
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$txt = wfMessage( 'categorytree-collapse-bullet' )->plain();
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$linkattr[ 'title' ] = wfMessage( 'categorytree-collapse' )->plain();
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$linkattr[ 'data-ct-loaded' ] = true;
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$linkattr[ 'data-ct-state' ] = 'expanded';
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}
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$bullet = Xml::openElement( $tag, $linkattr ) . $txt . Xml::closeElement( $tag ) . ' ';
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}
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} else {
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$bullet = wfMessage( 'categorytree-page-bullet' )->plain();
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}
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$s .= Xml::tags( 'span', $attr, $bullet ) . ' ';
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$s .= Xml::openElement( 'a', [ 'class' => $labelClass, 'href' => $wikiLink ] )
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. $label . Xml::closeElement( 'a' );
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if ( $count !== false && $this->getOption( 'showcount' ) ) {
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$s .= self::createCountString( RequestContext::getMain(), $cat, $count );
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}
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$s .= Xml::closeElement( 'div' );
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$s .= "\n\t\t";
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$s .= Xml::openElement(
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'div',
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[
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'class' => 'CategoryTreeChildren',
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'style' => $children > 0 ? "display:block" : "display:none"
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]
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);
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if ( $ns == NS_CATEGORY && $children > 0 ) {
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$children = $this->renderChildren( $title, $children );
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if ( $children == '' ) {
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$s .= Xml::openElement( 'i', [ 'class' => 'CategoryTreeNotice' ] );
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if ( $mode == CategoryTreeMode::CATEGORIES ) {
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$s .= wfMessage( 'categorytree-no-subcategories' )->text();
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} elseif ( $mode == CategoryTreeMode::PAGES ) {
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$s .= wfMessage( 'categorytree-no-pages' )->text();
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} elseif ( $mode == CategoryTreeMode::PARENTS ) {
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$s .= wfMessage( 'categorytree-no-parent-categories' )->text();
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} else {
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$s .= wfMessage( 'categorytree-nothing-found' )->text();
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}
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$s .= Xml::closeElement( 'i' );
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} else {
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$s .= $children;
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}
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}
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$s .= Xml::closeElement( 'div' );
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$s .= Xml::closeElement( 'div' );
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$s .= "\n\t\t";
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return $s;
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}
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/**
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* Create a string which format the page, subcat and file counts of a category
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* @param IContextSource $context
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* @param Category|null $cat
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* @param int $countMode
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* @return string
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*/
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public static function createCountString( IContextSource $context, $cat, $countMode ) {
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global $wgContLang;
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# Get counts, with conversion to integer so === works
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# Note: $allCount is the total number of cat members,
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# not the count of how many members are normal pages.
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$allCount = $cat ? intval( $cat->getPageCount() ) : 0;
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$subcatCount = $cat ? intval( $cat->getSubcatCount() ) : 0;
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$fileCount = $cat ? intval( $cat->getFileCount() ) : 0;
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$pages = $allCount - $subcatCount - $fileCount;
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$attr = [
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'title' => $context->msg( 'categorytree-member-counts' )
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->numParams( $subcatCount, $pages, $fileCount, $allCount, $countMode )->text(),
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'dir' => $context->getLanguage()->getDir() # numbers and commas get messed up in a mixed dir env
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];
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$s = $wgContLang->getDirMark() . ' ';
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# Create a list of category members with only non-zero member counts
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$memberNums = [];
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if ( $subcatCount ) {
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$memberNums[] = $context->msg( 'categorytree-num-categories' )
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->numParams( $subcatCount )->text();
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}
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if ( $pages ) {
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$memberNums[] = $context->msg( 'categorytree-num-pages' )->numParams( $pages )->text();
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}
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if ( $fileCount ) {
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$memberNums[] = $context->msg( 'categorytree-num-files' )
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->numParams( $fileCount )->text();
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}
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$memberNumsShort = $memberNums
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? $context->getLanguage()->commaList( $memberNums )
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: $context->msg( 'categorytree-num-empty' )->text();
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# Only $5 is actually used in the default message.
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# Other arguments can be used in a customized message.
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$s .= Xml::tags(
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'span',
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$attr,
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$context->msg( 'categorytree-member-num' )
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// Do not use numParams on params 1-4, as they are only used for customisation.
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->params( $subcatCount, $pages, $fileCount, $allCount, $memberNumsShort )
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->escaped()
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);
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return $s;
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}
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/**
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* Creates a Title object from a user provided (and thus unsafe) string
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* @param $title string
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* @return null|Title
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*/
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static function makeTitle( $title ) {
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$title = trim( $title );
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if ( strval( $title ) === '' ) {
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return null;
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}
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# The title must be in the category namespace
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# Ignore a leading Category: if there is one
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$t = Title::newFromText( $title, NS_CATEGORY );
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if ( !$t || $t->getNamespace() != NS_CATEGORY || $t->getInterwiki() != '' ) {
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// If we were given something like "Wikipedia:Foo" or "Template:",
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// try it again but forced.
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$title = "Category:$title";
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$t = Title::newFromText( $title );
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}
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return $t;
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}
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/**
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* Internal function to cap depth
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* @param $mode
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* @param $depth
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* @return int|mixed
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*/
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static function capDepth( $mode, $depth ) {
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global $wgCategoryTreeMaxDepth;
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if ( is_numeric( $depth ) ) {
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$depth = intval( $depth );
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} else {
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return 1;
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}
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if ( is_array( $wgCategoryTreeMaxDepth ) ) {
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$max = isset( $wgCategoryTreeMaxDepth[$mode] ) ? $wgCategoryTreeMaxDepth[$mode] : 1;
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} elseif ( is_numeric( $wgCategoryTreeMaxDepth ) ) {
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$max = $wgCategoryTreeMaxDepth;
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} else {
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wfDebug( 'CategoryTree::capDepth: $wgCategoryTreeMaxDepth is invalid.' );
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$max = 1;
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}
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return min( $depth, $max );
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}
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}
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