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phorge/src/view/extension/PHUICurtainExtension.php
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PHUICurtainExtension.php
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<?php
abstract class PHUICurtainExtension extends Phobject {
private $viewer;
public function setViewer(PhabricatorUser $viewer) {
$this->viewer = $viewer;
return $this;
}
public function getViewer() {
return $this->viewer;
}
abstract public function shouldEnableForObject($object);
abstract public function getExtensionApplication();
public function buildCurtainPanels($object) {
$panel = $this->buildCurtainPanel($object);
if ($panel !== null) {
return array($panel);
}
return array();
}
public function buildCurtainPanel($object) {
throw new PhutilMethodNotImplementedException();
}
final public function getExtensionKey() {
return $this->getPhobjectClassConstant('EXTENSIONKEY');
}
final public static function getAllExtensions() {
return id(new PhutilClassMapQuery())
->setAncestorClass(__CLASS__)
->setUniqueMethod('getExtensionKey')
->execute();
}
protected function newPanel() {
return new PHUICurtainPanelView();
}
final public static function buildExtensionPanels(
PhabricatorUser $viewer,
$object) {
$extensions = self::getAllExtensions();
foreach ($extensions as $extension) {
$extension->setViewer($viewer);
}
foreach ($extensions as $key => $extension) {
$application = $extension->getExtensionApplication();
if (!($application instanceof PhabricatorApplication)) {
throw new Exception(
pht(
'Curtain extension ("%s", of class "%s") did not return an '.
'application from method "%s". This method must return an '.
'object of class "%s".',
$key,
get_class($extension),
'getExtensionApplication()',
'PhabricatorApplication'));
}
$has_application = PhabricatorApplication::isClassInstalledForViewer(
get_class($application),
$viewer);
if (!$has_application) {
unset($extensions[$key]);
}
}
foreach ($extensions as $key => $extension) {
if (!$extension->shouldEnableForObject($object)) {
unset($extensions[$key]);
}
}
$result = array();
foreach ($extensions as $key => $extension) {
$panels = $extension->buildCurtainPanels($object);
if (!is_array($panels)) {
throw new Exception(
pht(
'Curtain extension ("%s", of class "%s") did not return a list of '.
'curtain panels from method "%s". This method must return an '.
'array, and each value in the array must be a "%s" object.',
$key,
get_class($extension),
'buildCurtainPanels()',
'PHUICurtainPanelView'));
}
foreach ($panels as $panel_key => $panel) {
if (!($panel instanceof PHUICurtainPanelView)) {
throw new Exception(
pht(
'Curtain extension ("%s", of class "%s") returned a list of '.
'curtain panels from "%s" that contains an invalid value: '.
'a value (with key "%s") is not an object of class "%s". '.
'Each item in the returned array must be a panel.',
$key,
get_class($extension),
'buildCurtainPanels()',
$panel_key,
'PHUICurtainPanelView'));
}
$result[] = $panel;
}
}
return $result;
}
}

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