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phorge/src/view/control/AphrontCursorPagerView.php
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AphrontCursorPagerView.php
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<?php
final class AphrontCursorPagerView extends AphrontView {
private $afterID;
private $beforeID;
private $pageSize = 100;
private $nextPageID;
private $prevPageID;
private $moreResults;
private $uri;
final public function setPageSize($page_size) {
$this->pageSize = max(1, $page_size);
return $this;
}
final public function getPageSize() {
return $this->pageSize;
}
final public function setURI(PhutilURI $uri) {
$this->uri = $uri;
return $this;
}
final public function readFromRequest(AphrontRequest $request) {
$this->uri = $request->getRequestURI();
$this->afterID = $request->getStr('after');
$this->beforeID = $request->getStr('before');
return $this;
}
final public function setAfterID($after_id) {
$this->afterID = $after_id;
return $this;
}
final public function getAfterID() {
return $this->afterID;
}
final public function setBeforeID($before_id) {
$this->beforeID = $before_id;
return $this;
}
final public function getBeforeID() {
return $this->beforeID;
}
final public function setNextPageID($next_page_id) {
$this->nextPageID = $next_page_id;
return $this;
}
final public function getNextPageID() {
return $this->nextPageID;
}
final public function setPrevPageID($prev_page_id) {
$this->prevPageID = $prev_page_id;
return $this;
}
final public function getPrevPageID() {
return $this->prevPageID;
}
final public function sliceResults(array $results) {
if (count($results) > $this->getPageSize()) {
$offset = ($this->beforeID ? count($results) - $this->getPageSize() : 0);
$results = array_slice($results, $offset, $this->getPageSize(), true);
$this->moreResults = true;
}
return $results;
}
public function willShowPagingControls() {
return $this->prevPageID ||
$this->nextPageID ||
$this->afterID ||
($this->beforeID && $this->moreResults);
}
public function getFirstPageURI() {
if (!$this->uri) {
throw new Exception(
pht('You must call setURI() before you can call getFirstPageURI().'));
}
if (!$this->afterID && !($this->beforeID && $this->moreResults)) {
return null;
}
return $this->uri
->alter('before', null)
->alter('after', null);
}
public function getPrevPageURI() {
if (!$this->uri) {
throw new Exception(
pht('You must call setURI() before you can call getPrevPageURI().'));
}
if (!$this->prevPageID) {
return null;
}
return $this->uri
->alter('after', null)
->alter('before', $this->prevPageID);
}
public function getNextPageURI() {
if (!$this->uri) {
throw new Exception(
pht('You must call setURI() before you can call getNextPageURI().'));
}
if (!$this->nextPageID) {
return null;
}
return $this->uri
->alter('after', $this->nextPageID)
->alter('before', null);
}
public function render() {
if (!$this->uri) {
throw new Exception(
pht('You must call setURI() before you can call render().'));
}
$links = array();
$first_uri = $this->getFirstPageURI();
if ($first_uri) {
$links[] = phutil_tag(
'a',
array(
'href' => $first_uri,
),
"\xC2\xAB ". pht('First'));
}
$prev_uri = $this->getPrevPageURI();
if ($prev_uri) {
$links[] = phutil_tag(
'a',
array(
'href' => $prev_uri,
),
"\xE2\x80\xB9 " . pht('Prev'));
}
$next_uri = $this->getNextPageURI();
if ($next_uri) {
$links[] = phutil_tag(
'a',
array(
'href' => $next_uri,
),
pht('Next') . " \xE2\x80\xBA");
}
return phutil_tag(
'div',
array('class' => 'aphront-pager-view'),
$links);
}
}

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