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| 1 | <?php |
| 2 | |
| 3 | use MediaWiki\Pager\IndexPager; |
| 4 | |
| 5 | class LqtDiscussionPager extends IndexPager { |
| 6 | |
| 7 | /** @var Article|false */ |
| 8 | protected $article; |
| 9 | |
| 10 | /** @var string|false */ |
| 11 | protected $orderType; |
| 12 | |
| 13 | public function __construct( $article, $orderType ) { |
| 14 | $this->article = $article; |
| 15 | $this->orderType = $orderType; |
| 16 | |
| 17 | parent::__construct(); |
| 18 | |
| 19 | $this->setLimit( min( 50, $this->getPageLimit() ) ); |
| 20 | } |
| 21 | |
| 22 | public function getPageLimit() { |
| 23 | $article = $this->article; |
| 24 | |
| 25 | $requestedLimit = $this->getRequest()->getIntOrNull( 'limit' ); |
| 26 | if ( $requestedLimit ) { |
| 27 | return $requestedLimit; |
| 28 | } |
| 29 | |
| 30 | if ( $article->getPage()->exists() ) { |
| 31 | $pout = $article->getParserOutput(); |
| 32 | $setLimit = $pout->getPageProperty( 'lqt-page-limit' ); |
| 33 | |
| 34 | if ( $setLimit ) { |
| 35 | return $setLimit; |
| 36 | } |
| 37 | } |
| 38 | |
| 39 | global $wgLiquidThreadsDefaultPageLimit; |
| 40 | return $wgLiquidThreadsDefaultPageLimit; |
| 41 | } |
| 42 | |
| 43 | public function getQueryInfo() { |
| 44 | $queryInfo = [ |
| 45 | 'tables' => [ 'thread' ], |
| 46 | 'fields' => '*', |
| 47 | 'conds' => [ |
| 48 | Threads::articleClause( $this->article->getPage() ), |
| 49 | Threads::topLevelClause(), |
| 50 | $this->mDb->expr( 'thread_type', '!=', Threads::TYPE_DELETED ), |
| 51 | ], |
| 52 | ]; |
| 53 | |
| 54 | return $queryInfo; |
| 55 | } |
| 56 | |
| 57 | public function getRows() { |
| 58 | if ( !$this->mQueryDone ) { |
| 59 | $this->doQuery(); |
| 60 | } |
| 61 | |
| 62 | # Don't use any extra rows returned by the query |
| 63 | $numRows = min( $this->mResult->numRows(), $this->mLimit ); |
| 64 | |
| 65 | $rows = []; |
| 66 | |
| 67 | if ( $numRows ) { |
| 68 | if ( $this->mIsBackwards ) { |
| 69 | for ( $i = $numRows - 1; $i >= 0; $i-- ) { |
| 70 | $this->mResult->seek( $i ); |
| 71 | $row = $this->mResult->fetchObject(); |
| 72 | $rows[] = $row; |
| 73 | } |
| 74 | } else { |
| 75 | $this->mResult->seek( 0 ); |
| 76 | for ( $i = 0; $i < $numRows; $i++ ) { |
| 77 | $row = $this->mResult->fetchObject(); |
| 78 | $rows[] = $row; |
| 79 | } |
| 80 | } |
| 81 | } |
| 82 | |
| 83 | return $rows; |
| 84 | } |
| 85 | |
| 86 | public function formatRow( $row ) { |
| 87 | // No-op, we get the list of rows from getRows() |
| 88 | // Return a string to make the function signature happy |
| 89 | return ''; |
| 90 | } |
| 91 | |
| 92 | public function getIndexField() { |
| 93 | switch ( $this->orderType ) { |
| 94 | case TalkpageView::LQT_NEWEST_CHANGES: |
| 95 | return 'thread_sortkey'; |
| 96 | case TalkpageView::LQT_OLDEST_THREADS: |
| 97 | case TalkpageView::LQT_NEWEST_THREADS: |
| 98 | return 'thread_created'; |
| 99 | default: |
| 100 | throw new LogicException( "Unknown sort order " . $this->orderType ); |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | public function getDefaultDirections() { |
| 105 | switch ( $this->orderType ) { |
| 106 | case TalkpageView::LQT_NEWEST_CHANGES: |
| 107 | case TalkpageView::LQT_NEWEST_THREADS: |
| 108 | return true; // Descending |
| 109 | case TalkpageView::LQT_OLDEST_THREADS: |
| 110 | return false; // Ascending |
| 111 | default: |
| 112 | throw new LogicException( "Unknown sort order " . $this->orderType ); |
| 113 | } |
| 114 | } |
| 115 | |
| 116 | /** |
| 117 | * A navigation bar with images |
| 118 | * Stolen from TablePager because it's pretty. |
| 119 | * @return string |
| 120 | */ |
| 121 | public function getNavigationBar() { |
| 122 | if ( !$this->isNavigationBarShown() ) { |
| 123 | return ''; |
| 124 | } |
| 125 | |
| 126 | $this->getOutput()->enableOOUI(); |
| 127 | |
| 128 | $types = [ 'first', 'prev', 'next', 'last' ]; |
| 129 | |
| 130 | $queries = $this->getPagingQueries(); |
| 131 | |
| 132 | $buttons = []; |
| 133 | |
| 134 | $title = $this->getTitle(); |
| 135 | |
| 136 | foreach ( $types as $type ) { |
| 137 | $buttons[] = new \OOUI\ButtonWidget( [ |
| 138 | // Messages used here: |
| 139 | // * table_pager_first |
| 140 | // * table_pager_prev |
| 141 | // * table_pager_next |
| 142 | // * table_pager_last |
| 143 | 'classes' => [ 'TablePager-button-' . $type ], |
| 144 | 'flags' => [ 'progressive' ], |
| 145 | 'framed' => false, |
| 146 | 'label' => $this->msg( 'table_pager_' . $type )->text(), |
| 147 | 'href' => $queries[ $type ] ? |
| 148 | $title->getLinkURL( $queries[ $type ] + $this->getDefaultQuery() ) : |
| 149 | null, |
| 150 | 'icon' => $type === 'prev' ? 'previous' : $type, |
| 151 | 'disabled' => $queries[ $type ] === false |
| 152 | ] ); |
| 153 | } |
| 154 | return new \OOUI\ButtonGroupWidget( [ |
| 155 | 'classes' => [ $this->getNavClass() ], |
| 156 | 'items' => $buttons, |
| 157 | ] ); |
| 158 | } |
| 159 | |
| 160 | /** |
| 161 | * @inheritDoc |
| 162 | */ |
| 163 | public function getModuleStyles() { |
| 164 | return array_merge( |
| 165 | parent::getModuleStyles(), [ 'oojs-ui.styles.icons-movement' ] |
| 166 | ); |
| 167 | } |
| 168 | |
| 169 | public function getNavClass() { |
| 170 | return 'TablePager_nav'; |
| 171 | } |
| 172 | } |