/**
* 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;
import org.apereo.portal.security.IPerson;
import org.w3c.dom.Attr;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
/**
* Layout processing action for changing a channel parameter in a user's layout.
*
*/
public class LPAChangeParameter implements ILayoutProcessingAction {
private String nodeId = null;
private String name = null;
private IPerson person = null;
private Element ilfNode = null;
private String value = null;
LPAChangeParameter(String nodeId, String name, String value, IPerson p, Element ilfNode) {
this.nodeId = nodeId;
this.name = name;
this.person = p;
this.ilfNode = ilfNode;
this.value = value;
}
/**
* Change the parameter for a channel in both the ILF and PLF using the appropriate mechanisms
* for incorporated nodes versus owned nodes.
*/
public void perform() throws PortalException {
// push the change into the PLF
if (nodeId.startsWith(Constants.FRAGMENT_ID_USER_PREFIX)) {
// we are dealing with an incorporated node, adding will replace
// an existing one for the same target node id and name
ParameterEditManager.addParmEditDirective(nodeId, name, value, person);
} else {
// node owned by user so change existing parameter child directly
Document plf = RDBMDistributedLayoutStore.getPLF(person);
Element plfNode = plf.getElementById(nodeId);
changeParameterChild(plfNode, name, value);
}
// push the change into the ILF
changeParameterChild(ilfNode, name, value);
}
/**
* Look in the passed-in element for a parameter child element whose value is to be changed to
* the passed-in value.
*
* @param node the parent node in which to create the parameter.
* @param name the name of the parameter to be created.
* @param value the value of the parameter to be created.
*/
static void changeParameterChild(Element node, String name, String value) {
if (node != null) {
boolean foundIt = false;
for (Element parm = (Element) node.getFirstChild();
parm != null;
parm = (Element) parm.getNextSibling()) {
Attr att = parm.getAttributeNode(Constants.ATT_NAME);
if (att != null && att.getValue().equals(name)) {
parm.setAttribute(Constants.ATT_VALUE, value);
foundIt = true;
break;
}
}
if (!foundIt) // if didn't find it add a new one
LPAAddParameter.addParameterChild(node, name, value);
}
}
}