/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF 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
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* 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.apache.lenya.cms.site.usecases;
import org.apache.avalon.framework.service.ServiceSelector;
import org.apache.lenya.cms.publication.Document;
import org.apache.lenya.cms.publication.Publication;
import org.apache.lenya.cms.repository.Node;
import org.apache.lenya.cms.site.SiteManager;
import org.apache.lenya.cms.site.SiteStructure;
import org.apache.lenya.cms.site.tree.SiteTree;
import org.apache.lenya.cms.site.tree.SiteTreeNode;
import org.apache.lenya.cms.usecase.DocumentUsecase;
import org.apache.lenya.cms.usecase.UsecaseException;
/**
* Nudge a document one position up or down.
*
* @version $Id: Nudge.java 179568 2005-06-02 09:27:26Z jwkaltz $
*/
public class Nudge extends DocumentUsecase {
protected static final String MESSAGE_AREA = "nudge-error-area";
protected static final String MESSAGE_DIRECTION = "nudge-error-direction";
protected static final String MESSAGE_DIRECTION_UNKNOWN = "nudge-error-direction-unknown";
protected static final String MESSAGE_ISLIVE = "nudge-error-islive";
protected static final String DIRECTION = "direction";
protected static final String UP = "up";
protected static final String DOWN = "down";
/**
* @see org.apache.lenya.cms.usecase.AbstractUsecase#doCheckPreconditions()
*/
protected void doCheckPreconditions() throws Exception {
super.doCheckPreconditions();
if (hasErrors()) {
return;
}
Document doc = getSourceDocument();
SiteStructure liveSite = doc.getPublication().getArea(Publication.LIVE_AREA).getSite();
if (liveSite.contains(doc.getPath())) {
addErrorMessage(MESSAGE_ISLIVE);
}
Publication publication = doc.getPublication();
ServiceSelector selector = null;
SiteManager siteManager = null;
try {
selector = (ServiceSelector) this.manager.lookup(SiteManager.ROLE + "Selector");
siteManager = (SiteManager) selector.select(publication.getSiteManagerHint());
SiteStructure structure = siteManager.getSiteStructure(doc.getFactory(), publication,
doc.getArea());
if (structure instanceof SiteTree) {
SiteTreeNode node = (SiteTreeNode) doc.getLink().getNode();
SiteTreeNode[] siblings = null;
String direction = getParameterAsString(DIRECTION);
if (direction.equals(UP)) {
siblings = node.getPrecedingSiblings();
} else if (direction.equals(DOWN)) {
siblings = node.getNextSiblings();
} else {
addErrorMessage(MESSAGE_DIRECTION_UNKNOWN, new String[] { direction });
}
if (siblings != null && siblings.length == 0) {
addErrorMessage(MESSAGE_DIRECTION);
}
} else {
addErrorMessage(MESSAGE_AREA);
}
} catch (Exception e) {
throw new RuntimeException(e);
} finally {
if (selector != null) {
if (siteManager != null) {
selector.release(siteManager);
}
this.manager.release(selector);
}
}
}
/**
* @see org.apache.lenya.cms.usecase.AbstractUsecase#getNodesToLock()
*/
protected Node[] getNodesToLock() throws UsecaseException {
Node[] nodes = new Node[0];
if(getSourceDocument() != null) {
Node node = getSourceDocument().area().getSite().getRepositoryNode();
nodes = new Node[] { node };
}
return nodes;
}
/**
* @see org.apache.lenya.cms.usecase.AbstractUsecase#doExecute()
*/
protected void doExecute() throws Exception {
super.doExecute();
Publication publication = getSourceDocument().getPublication();
ServiceSelector selector = null;
SiteManager siteManager = null;
try {
selector = (ServiceSelector) this.manager.lookup(SiteManager.ROLE + "Selector");
siteManager = (SiteManager) selector.select(publication.getSiteManagerHint());
SiteStructure structure = siteManager.getSiteStructure(
getSourceDocument().getFactory(), publication, getSourceDocument().getArea());
if (structure instanceof SiteTree) {
SiteTree tree = (SiteTree) structure;
String direction = getParameterAsString(DIRECTION);
if (direction.equals(UP)) {
tree.moveUp(getSourceDocument().getPath());
} else if (direction.equals(DOWN)) {
tree.moveDown(getSourceDocument().getPath());
} else {
throw new IllegalArgumentException("The direction [" + direction
+ "] is not supported.");
}
} else {
throw new IllegalStateException("This operation is only supported for site trees.");
}
} catch (Exception e) {
throw new RuntimeException(e);
} finally {
if (selector != null) {
if (siteManager != null) {
selector.release(siteManager);
}
this.manager.release(selector);
}
}
}
}