function perform()
{
$galleryResources = new GalleryResources();
$galleryAlbums = new GalleryAlbums();
// initialize the view
$this->_view = new BlogView($this->_blogInfo, VIEW_RESOURCE_TEMPLATE, SMARTY_VIEW_CACHE_CHECK, array("resourceId" => $this->_resourceId, "resourceName" => $this->_resourceName, "albumName" => $this->_albumName, "albumId" => $this->_albumId));
// if it's cached, do nothing
if ($this->_view->isCached()) {
return true;
}
// otherwise continue as normal...
// try to find the album to which this resource belongs
if ($this->_albumName) {
$album = $galleryAlbums->getAlbumByName($this->_albumName, $this->_blogInfo->getId(), false, false);
if (!$album) {
$this->_view = new ErrorView($this->_blogInfo);
$this->_view->setValue("message", "error_fetching_resource");
$this->setCommonData();
return false;
}
$this->_albumId = $album->getId();
}
// fetch the album we're trying to browse
if ($this->_resourceName != "") {
$resource = $galleryResources->getResourceFile($this->_blogInfo->getId(), $this->_resourceName, $this->_albumId);
} else {
$resource = $galleryResources->getResource($this->_resourceId, $this->_blogInfo->getId(), $this->_albumId);
}
// check if the album was correctly fetched
if (!$resource) {
$this->_view = new ErrorView($this->_blogInfo);
$this->_view->setValue("message", "error_fetching_resource");
$this->setCommonData();
return false;
}
// if all went fine, continue loading the next and previous resources so that
// navigation can be made easier...
$nextResource = $galleryResources->getNextResource($resource);
$prevResource = $galleryResources->getPreviousResource($resource);
// generate events for all the resources we just loaded
$this->notifyEvent(EVENT_RESOURCE_LOADED, array("resource" => &$resource));
if ($nextResource) {
$this->notifyEvent(EVENT_RESOURCE_LOADED, array("resource" => &$nextResource));
}
if ($prevResource) {
$this->notifyEvent(EVENT_RESOURCE_LOADED, array("resource" => &$prevResource));
}
$this->_view->setValue("resource", $resource);
$this->_view->setValue("prevresource", $prevResource);
$this->_view->setValue("nextresource", $nextResource);
$this->setCommonData();
// and return everything normal
return true;
}
