/**
* Checks whether this package is required by other packages.
* If so than a template will be displayed to warn the user that
* a further uninstallation will uninstall also the dependent packages
*/
public static function checkDependencies()
{
$packageID = 0;
if (isset($_REQUEST['packageID'])) {
$packageID = intval($_REQUEST['packageID']);
}
// get packages info
try {
// create object of uninstalling package
$package = new Package($packageID);
} catch (SystemException $e) {
throw new IllegalLinkException();
}
// can not uninstall wcf package.
if ($package->package == 'com.woltlab.wcf') {
throw new IllegalLinkException();
}
$dependentPackages = array();
$uninstallAvailable = true;
if ($package->isRequired()) {
// get packages that requires this package
$dependentPackages = self::getPackageDependencies($package->packageID);
foreach ($dependentPackages as $dependentPackage) {
if ($dependentPackage['packageID'] == PACKAGE_ID) {
$uninstallAvailable = false;
break;
}
}
}
// add this package to queue
self::addQueueEntries($package, $dependentPackages);
}
