function run()
{
//find TO revision
try {
//retrieve pagegroup
$nPageGroupId = (int) AnwEnv::_GET("pagegroup", AnwEnv::_POST("pagegroup"));
if (!$nPageGroupId) {
//special case: we may have passed a pageid (ie: from lastchanges, for better performances avoiding loading pagegroup info)
$nPageId = (int) AnwEnv::_GET("page");
if ($nPageId) {
$oExistingPageTmp = AnwPage::getLastPageRevision($nPageId);
//high queries consuming, not 100% cached...
if ($oExistingPageTmp->exists()) {
$nPageGroupId = $oExistingPageTmp->getPageGroup()->getId();
}
unset($oExistingPageTmp);
}
if (!$nPageGroupId) {
throw new AnwBadCallException();
}
}
$oPageGroup = new AnwPageGroup($nPageGroupId);
if (!$oPageGroup->exists()) {
throw new AnwBadCallException("pagegroup not found for revert");
}
//get valid changeid
$aoPageGroupChangesById = AnwStorage::getLastChanges(false, 0, null, null, null, null, $oPageGroup);
$nRevToChangeId = (int) AnwEnv::_GET("revto", AnwEnv::_POST("revto"));
//may be null when coming from action_revertpage
if (!$nRevToChangeId || !array_key_exists($nRevToChangeId, $aoPageGroupChangesById)) {
//get last changeid from this pagegroup
$oChangeReference = reset($aoPageGroupChangesById);
$nRevToChangeId = $oChangeReference->getChangeId();
}
} catch (AnwException $e) {
throw new AnwBadCallException();
}
$this->setTitle($this->t_("title"));
$aaRevertPlan = $this->generateRevertPlan($oPageGroup, $nRevToChangeId);
if (AnwEnv::_POST("submit") && $nRevToChangeId > 0) {
$this->doRevert($oPageGroup, $aaRevertPlan);
} else {
$this->showFormRevert($oPageGroup, $aaRevertPlan, $nRevToChangeId);
}
}
/**
* If we come from action "history", returns the page requested.
*/
protected function getPageForHistory()
{
static $oPageForHistory = null, $bInitialized = false;
// only initialize first time for performances saving
if (!$bInitialized) {
// only look for page if no pagegroup was requested - important for checkActionAllowed()
if (!$this->getPageGroupForHistory()) {
$nPageId = (int) AnwEnv::_GET("page");
if ($nPageId > 0) {
try {
$oPageTmp = AnwPage::getLastPageRevision($nPageId);
} catch (AnwPageNotFoundException $e) {
throw new AnwBadCallException();
}
$oPageTmp->setSkipLoadingContent(true);
if ($oPageTmp->exists()) {
$oPageForHistory = $oPageTmp;
}
}
}
$bInitialized = true;
}
return $oPageForHistory;
}
