/*
* Copyright (C) 2007-2012 Argeo GmbH
*
* Licensed 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.argeo.slc.akb.ui.providers;
import java.util.ArrayList;
import java.util.List;
import javax.jcr.Node;
import javax.jcr.NodeIterator;
import javax.jcr.RepositoryException;
import javax.jcr.Session;
import org.argeo.slc.akb.AkbException;
import org.argeo.slc.akb.AkbNames;
import org.argeo.slc.akb.AkbTypes;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.Viewer;
/**
* Content provider for a tree of active AKB environments. Displays
* ActiveTreeItem
to be able to display subtrees of item without
* duplicating the information from the corresponding template.
*/
public class ActiveEnvsTreeContentProvider implements ITreeContentProvider {
// private final static Log log = LogFactory
// .getLog(ActiveEnvsTreeContentProvider.class);
/**
* @param parent
* Pass current user home as parameter
*
*/
public Object[] getElements(Object parent) {
if (parent instanceof Object[])
return (Object[]) parent;
else
return null;
}
public Object getParent(Object child) {
return ((ActiveTreeItem) child).getParent();
}
public Object[] getChildren(Object parent) {
try {
ActiveTreeItem currItem = (ActiveTreeItem) parent;
Node parNode = currItem.getNode();
Node envNode = currItem.getEnvironment();
if (parNode.isNodeType(AkbTypes.AKB_ENV)) {
Session session = parNode.getSession();
if (parNode.hasProperty(AkbNames.AKB_ENV_TEMPLATE_PATH)
&& session.nodeExists(parNode.getProperty(
AkbNames.AKB_ENV_TEMPLATE_PATH).getString()))
parNode = session.getNode(parNode.getProperty(
AkbNames.AKB_ENV_TEMPLATE_PATH).getString());
else
return null;
}
NodeIterator ni = parNode.getNodes();
List children = new ArrayList();
while (ni.hasNext()) {
Node currNode = ni.nextNode();
if (!currNode.isNodeType(AkbTypes.AKB_CONNECTOR_FOLDER)) {
ActiveTreeItem currChild = new ActiveTreeItem(currItem,
currNode, envNode);
children.add(currChild);
}
}
return children.toArray();
} catch (RepositoryException e) {
throw new AkbException("Error while getting children nodes", e);
}
}
public boolean hasChildren(Object parent) {
try {
ActiveTreeItem currItem = (ActiveTreeItem) parent;
Node parNode = currItem.getNode();
if (parNode.isNodeType(AkbTypes.AKB_ENV)) {
Session session = parNode.getSession();
if (parNode.hasProperty(AkbNames.AKB_ENV_TEMPLATE_PATH)
&& session.nodeExists(parNode.getProperty(
AkbNames.AKB_ENV_TEMPLATE_PATH).getString()))
parNode = session.getNode(parNode.getProperty(
AkbNames.AKB_ENV_TEMPLATE_PATH).getString());
else
return false;
}
return parNode.hasNodes();
} catch (RepositoryException e) {
throw new AkbException("Error while checking children nodes", e);
}
}
public void dispose() {
// FIXME implement if needed
}
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
}
}