/**
  * get default view.
  *
  * @return Enum
  */
 public function getDefaultView()
 {
     if (!$this->mRoot->mContext->mUser->mIdentity->isAuthenticated()) {
         return $this->_getFrameViewStatus('ERROR');
     }
     $this->mHandler =& Cosmoapi_Utils::getTrustModuleHandler('data', $this->mAsset->mTrustDirname);
     $this->_getId();
     if (!$this->mHandler->setDirname($this->mDirname)) {
         return $this->_getFrameViewStatus('ERROR');
     }
     $this->mFilePath = $this->mHandler->getItemFilePath($this->mItemId);
     if (!$this->mFilePath) {
         return $this->_getFrameViewStatus('ERROR');
     }
     return $this->_getFrameViewStatus('SUCCESS');
 }