/**
* Construct state.
*
* @param Store $store
* Store to load/save data from/to.
* @param bool $mutable
* Whether state is mutable (true) or read-only (false).
* @throws AccessException If state could not be read.
*/
public function __construct(Store $store, $mutable = true)
{
parent::__construct();
$this->store = $store;
try {
$this->store->open($mutable);
$this->data = $this->store->read();
} catch (AccessException $e) {
throw new AccessException('Could not read state: ' . $e->getMessage(), null, $e);
}
}
/**
* Save configuration. If this is not the root configuration, the root
* configuration will be saved instead.
* @return boolean True if the configuration was saved.
*/
public function save()
{
if ($this->root !== $this) {
return $this->root->save();
}
if (!isset($this->store)) {
return false;
}
if (!$this->updated) {
return true;
}
$this->store->open(true);
$this->store->write($this->data);
$this->store->close();
$this->updated = false;
return true;
}
/**
* Reopen a closed session.
* @return boolean True on success, false on failure.
*/
public function open()
{
$this->store->open(true);
}