/**
* Licensed to Apereo under one or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information regarding copyright ownership. Apereo
* licenses this file to you under the Apache License, Version 2.0 (the "License"); you may not use
* this file except in compliance with the License. You may obtain a copy of the License at the
* following location:
*
* <p>http://www.apache.org/licenses/LICENSE-2.0
*
* <p>Unless required by applicable law or agreed to in writing, software distributed under the
* License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apereo.portal.layout.dlm;
import org.apereo.portal.PortalException;
/**
* Represents a layout processing action that should be applied to a user's layout and contains the
* ability to apply that specific action. Node changes that need to be made to the ILF and PLF of a
* user must not be made until all changes have been identified and reviewed to see if they are
* allowed by an owning fragment and additionally in the case of channels by the channel definition.
* After all such actions have been identified and approved then each implementation of this
* interface applies its changes in an appropriate manner based on whether the node is incorporated
* from a fragment or owned by the user.
*
*/
public interface ILayoutProcessingAction {
public void perform() throws PortalException;
}