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authorPierre Schmitz <pierre@archlinux.de>2006-10-11 20:21:25 +0000
committerPierre Schmitz <pierre@archlinux.de>2006-10-11 20:21:25 +0000
commitd81f562b712f2387fa02290bf2ca86392ab356f2 (patch)
treed666cdefbe6ac320827a2c6cb473581b46e22c4c /includes/PageHistory.php
parent183851b06bd6c52f3cae5375f433da720d410447 (diff)
Aktualisierung auf Version 1.8.1
Diffstat (limited to 'includes/PageHistory.php')
-rw-r--r--includes/PageHistory.php330
1 files changed, 98 insertions, 232 deletions
diff --git a/includes/PageHistory.php b/includes/PageHistory.php
index de006285..d7f426fc 100644
--- a/includes/PageHistory.php
+++ b/includes/PageHistory.php
@@ -40,8 +40,6 @@ class PageHistory {
$this->mTitle =& $article->mTitle;
$this->mNotificationTimestamp = NULL;
$this->mSkin = $wgUser->getSkin();
-
- $this->defaultLimit = 50;
}
/**
@@ -93,99 +91,30 @@ class PageHistory {
return;
}
- $dbr =& wfGetDB(DB_SLAVE);
-
- /*
- * Extract limit, the number of revisions to show, and
- * offset, the timestamp to begin at, from the URL.
- */
- $limit = $wgRequest->getInt('limit', $this->defaultLimit);
- if ( $limit <= 0 ) {
- $limit = $this->defaultLimit;
- } elseif ( $limit > 50000 ) {
- # Arbitrary maximum
- # Any more than this and we'll probably get an out of memory error
- $limit = 50000;
- }
-
- $offset = $wgRequest->getText('offset');
-
- /* Offset must be an integral. */
- if (!strlen($offset) || !preg_match("/^[0-9]+$/", $offset))
- $offset = 0;
-# $offset = $dbr->timestamp($offset);
- $dboffset = $offset === 0 ? 0 : $dbr->timestamp($offset);
+
/*
- * "go=last" means to jump to the last history page.
+ * "go=first" means to jump to the last (earliest) history page.
+ * This is deprecated, it no longer appears in the user interface
*/
- if (($gowhere = $wgRequest->getText("go")) !== NULL) {
- $gourl = null;
- switch ($gowhere) {
- case "first":
- if (($lastid = $this->getLastOffsetForPaging($this->mTitle->getArticleID(), $limit)) === NULL)
- break;
- $gourl = $wgTitle->getLocalURL("action=history&limit={$limit}&offset=".
- wfTimestamp(TS_MW, $lastid));
- break;
- }
-
- if (!is_null($gourl)) {
- $wgOut->redirect($gourl);
- return;
- }
+ if ( $wgRequest->getText("go") == 'first' ) {
+ $limit = $wgRequest->getInt( 'limit', 50 );
+ $wgOut->redirect( $wgTitle->getLocalURL( "action=history&limit={$limit}&dir=prev" ) );
+ return;
}
- /*
- * Fetch revisions.
- *
- * If the user clicked "previous", we retrieve the revisions backwards,
- * then reverse them. This is to avoid needing to know the timestamp of
- * previous revisions when generating the URL.
+ /**
+ * Do the list
*/
- $direction = $this->getDirection();
- $revisions = $this->fetchRevisions($limit, $dboffset, $direction);
- $navbar = $this->makeNavbar($revisions, $offset, $limit, $direction);
-
- /*
- * We fetch one more revision than needed to get the timestamp of the
- * one after this page (and to know if it exists).
- *
- * linesonpage stores the actual number of lines.
- */
- if (count($revisions) < $limit + 1)
- $this->linesonpage = count($revisions);
- else
- $this->linesonpage = count($revisions) - 1;
-
- /* Un-reverse revisions */
- if ($direction == PageHistory::DIR_PREV)
- $revisions = array_reverse($revisions);
-
- /*
- * Print the top navbar.
- */
- $s = $navbar;
- $s .= $this->beginHistoryList();
- $counter = 1;
-
- /*
- * Print each revision, excluding the one-past-the-end, if any.
- */
- foreach (array_slice($revisions, 0, $limit) as $i => $line) {
- $latest = !$i && $offset == 0;
- $firstInList = !$i;
- $next = isset( $revisions[$i + 1] ) ? $revisions[$i + 1 ] : null;
- $s .= $this->historyLine($line, $next, $counter, $this->getNotificationTimestamp(), $latest, $firstInList);
- $counter++;
- }
-
- /*
- * End navbar.
- */
- $s .= $this->endHistoryList();
- $s .= $navbar;
-
- $wgOut->addHTML( $s );
+ $pager = new PageHistoryPager( $this );
+ $navbar = $pager->getNavigationBar();
+ $this->linesonpage = $pager->getNumRows();
+ $wgOut->addHTML(
+ $pager->getNavigationBar() .
+ $this->beginHistoryList() .
+ $pager->getBody() .
+ $this->endHistoryList() .
+ $pager->getNavigationBar()
+ );
wfProfileOut( $fname );
}
@@ -318,16 +247,15 @@ class PageHistory {
/** @todo document */
function lastLink( $rev, $next, $counter ) {
$last = wfMsgExt( 'last', array( 'escape' ) );
- if( is_null( $next ) ) {
- if( $rev->getTimestamp() == $this->getEarliestOffset() ) {
- return $last;
- } else {
- // Cut off by paging; there are more behind us...
- return $this->mSkin->makeKnownLinkObj(
- $this->mTitle,
- $last,
- "diff=" . $rev->getId() . "&oldid=prev" );
- }
+ if ( is_null( $next ) ) {
+ # Probably no next row
+ return $last;
+ } elseif ( $next === 'unknown' ) {
+ # Next row probably exists but is unknown, use an oldid=prev link
+ return $this->mSkin->makeKnownLinkObj(
+ $this->mTitle,
+ $last,
+ "diff=" . $rev->getId() . "&oldid=prev" );
} elseif( !$rev->userCan( Revision::DELETED_TEXT ) ) {
return $last;
} else {
@@ -387,72 +315,23 @@ class PageHistory {
}
/** @todo document */
- function getLatestOffset( $id = null ) {
- if ( $id === null) $id = $this->mTitle->getArticleID();
- return $this->getExtremeOffset( $id, 'max' );
- }
-
- /** @todo document */
- function getEarliestOffset( $id = null ) {
- if ( $id === null) $id = $this->mTitle->getArticleID();
- return $this->getExtremeOffset( $id, 'min' );
- }
-
- /** @todo document */
- function getExtremeOffset( $id, $func ) {
- $db =& wfGetDB(DB_SLAVE);
- return $db->selectField( 'revision',
- "$func(rev_timestamp)",
- array( 'rev_page' => $id ),
- 'PageHistory::getExtremeOffset' );
- }
-
- /** @todo document */
function getLatestId() {
if( is_null( $this->mLatestId ) ) {
$id = $this->mTitle->getArticleID();
$db =& wfGetDB(DB_SLAVE);
- $this->mLatestId = $db->selectField( 'revision',
- "max(rev_id)",
- array( 'rev_page' => $id ),
+ $this->mLatestId = $db->selectField( 'page',
+ "page_latest",
+ array( 'page_id' => $id ),
'PageHistory::getLatestID' );
}
return $this->mLatestId;
}
- /** @todo document */
- function getLastOffsetForPaging( $id, $step ) {
- $fname = 'PageHistory::getLastOffsetForPaging';
-
- $dbr =& wfGetDB(DB_SLAVE);
- $res = $dbr->select(
- 'revision',
- 'rev_timestamp',
- "rev_page=$id",
- $fname,
- array('ORDER BY' => 'rev_timestamp ASC', 'LIMIT' => $step));
-
- $n = $dbr->numRows( $res );
- $last = null;
- while( $obj = $dbr->fetchObject( $res ) ) {
- $last = $obj->rev_timestamp;
- }
- $dbr->freeResult( $res );
- return $last;
- }
-
/**
- * @return returns the direction of browsing watchlist
+ * Fetch an array of revisions, specified by a given limit, offset and
+ * direction. This is now only used by the feeds. It was previously
+ * used by the main UI but that's now handled by the pager.
*/
- function getDirection() {
- global $wgRequest;
- if ($wgRequest->getText("dir") == "prev")
- return PageHistory::DIR_PREV;
- else
- return PageHistory::DIR_NEXT;
- }
-
- /** @todo document */
function fetchRevisions($limit, $offset, $direction) {
$fname = 'PageHistory::fetchRevisions';
@@ -516,83 +395,6 @@ class PageHistory {
return $this->mNotificationTimestamp;
}
-
- /** @todo document */
- function makeNavbar($revisions, $offset, $limit, $direction) {
- global $wgLang;
-
- $revisions = array_slice($revisions, 0, $limit);
-
- $latestTimestamp = wfTimestamp(TS_MW, $this->getLatestOffset());
- $earliestTimestamp = wfTimestamp(TS_MW, $this->getEarliestOffset());
-
- /*
- * When we're displaying previous revisions, we need to reverse
- * the array, because it's queried in reverse order.
- */
- if ($direction == PageHistory::DIR_PREV)
- $revisions = array_reverse($revisions);
-
- /*
- * lowts is the timestamp of the first revision on this page.
- * hights is the timestamp of the last revision.
- */
-
- $lowts = $hights = 0;
-
- if( count( $revisions ) ) {
- $latestShown = wfTimestamp(TS_MW, $revisions[0]->rev_timestamp);
- $earliestShown = wfTimestamp(TS_MW, $revisions[count($revisions) - 1]->rev_timestamp);
- } else {
- $latestShown = null;
- $earliestShown = null;
- }
-
- /* Don't announce the limit everywhere if it's the default */
- $usefulLimit = $limit == $this->defaultLimit ? '' : $limit;
-
- $urls = array();
- foreach (array(20, 50, 100, 250, 500) as $num) {
- $urls[] = $this->MakeLink( $wgLang->formatNum($num),
- array('offset' => $offset == 0 ? '' : wfTimestamp(TS_MW, $offset), 'limit' => $num, ) );
- }
-
- $bits = implode($urls, ' | ');
-
- wfDebug("latestShown=$latestShown latestTimestamp=$latestTimestamp\n");
- if( $latestShown < $latestTimestamp ) {
- $prevtext = $this->MakeLink( wfMsgHtml("prevn", $limit),
- array( 'dir' => 'prev', 'offset' => $latestShown, 'limit' => $usefulLimit ) );
- $lasttext = $this->MakeLink( wfMsgHtml('histlast'),
- array( 'limit' => $usefulLimit ) );
- } else {
- $prevtext = wfMsgHtml("prevn", $limit);
- $lasttext = wfMsgHtml('histlast');
- }
-
- wfDebug("earliestShown=$earliestShown earliestTimestamp=$earliestTimestamp\n");
- if( $earliestShown > $earliestTimestamp ) {
- $nexttext = $this->MakeLink( wfMsgHtml("nextn", $limit),
- array( 'offset' => $earliestShown, 'limit' => $usefulLimit ) );
- $firsttext = $this->MakeLink( wfMsgHtml('histfirst'),
- array( 'go' => 'first', 'limit' => $usefulLimit ) );
- } else {
- $nexttext = wfMsgHtml("nextn", $limit);
- $firsttext = wfMsgHtml('histfirst');
- }
-
- $firstlast = "($lasttext | $firsttext)";
-
- return "$firstlast " . wfMsgHtml("viewprevnext", $prevtext, $nexttext, $bits);
- }
-
- function MakeLink($text, $query = NULL) {
- if ( $query === null ) return $text;
- return $this->mSkin->makeKnownLinkObj(
- $this->mTitle, $text,
- wfArrayToCGI( $query, array( 'action' => 'history' )));
- }
-
/**
* Output a subscription feed listing recent edits to this page.
@@ -678,8 +480,72 @@ class PageHistory {
function stripComment( $text ) {
return preg_replace( '/\[\[([^]]*\|)?([^]]+)\]\]/', '\2', $text );
}
+}
+
+
+class PageHistoryPager extends ReverseChronologicalPager {
+ public $mLastRow = false, $mPageHistory;
+
+ function __construct( $pageHistory ) {
+ parent::__construct();
+ $this->mPageHistory = $pageHistory;
+ }
+
+ function getQueryInfo() {
+ return array(
+ 'tables' => 'revision',
+ 'fields' => array('rev_id', 'rev_page', 'rev_text_id', 'rev_user', 'rev_comment', 'rev_user_text',
+ 'rev_timestamp', 'rev_minor_edit', 'rev_deleted'),
+ 'conds' => array('rev_page' => $this->mPageHistory->mTitle->getArticleID() ),
+ 'options' => array( 'USE INDEX' => 'page_timestamp' )
+ );
+ }
+
+ function getIndexField() {
+ return 'rev_timestamp';
+ }
+ function formatRow( $row ) {
+ if ( $this->mLastRow ) {
+ $latest = $this->mCounter == 1 && $this->mOffset == '';
+ $firstInList = $this->mCounter == 1;
+ $s = $this->mPageHistory->historyLine( $this->mLastRow, $row, $this->mCounter++,
+ $this->mPageHistory->getNotificationTimestamp(), $latest, $firstInList );
+ } else {
+ $s = '';
+ }
+ $this->mLastRow = $row;
+ return $s;
+ }
+
+ function getStartBody() {
+ $this->mLastRow = false;
+ $this->mCounter = 1;
+ return '';
+ }
+ function getEndBody() {
+ if ( $this->mLastRow ) {
+ $latest = $this->mCounter == 1 && $this->mOffset == 0;
+ $firstInList = $this->mCounter == 1;
+ if ( $this->mIsBackwards ) {
+ # Next row is unknown, but for UI reasons, probably exists if an offset has been specified
+ if ( $this->mOffset == '' ) {
+ $next = null;
+ } else {
+ $next = 'unknown';
+ }
+ } else {
+ # The next row is the past-the-end row
+ $next = $this->mPastTheEndRow;
+ }
+ $s = $this->mPageHistory->historyLine( $this->mLastRow, $next, $this->mCounter++,
+ $this->mPageHistory->getNotificationTimestamp(), $latest, $firstInList );
+ } else {
+ $s = '';
+ }
+ return $s;
+ }
}
?>