plugins/org.argeo.slc.akb.ui/src/main/java/org/argeo/slc/akb/ui/providers/TemplatesTreeContentProvider.java

   1 /*
   2  * Copyright (C) 2007-2012 Argeo GmbH
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *         http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.argeo.slc.akb.ui.providers;
  17
  18 import java.util.List;
  19
  20 import javax.jcr.Node;
  21 import javax.jcr.RepositoryException;
  22
  23 import org.argeo.jcr.JcrUtils;
  24 import org.argeo.slc.akb.AkbException;
  25 import org.eclipse.jface.viewers.ITreeContentProvider;
  26 import org.eclipse.jface.viewers.Viewer;
  27
  28 /** Basic content provider for a tree of AKB environment templates */
  29 public class TemplatesTreeContentProvider implements ITreeContentProvider {
  30
  31         /**
  32          * @param parent
  33          *            Pass current user home as parameter
  34          *
  35          */
  36         public Object[] getElements(Object parent) {
  37                 if (parent instanceof Object[])
  38                         return (Object[]) parent;
  39                 else
  40                         return null;
  41         }
  42
  43         public Object getParent(Object child) {
  44                 try {
  45                         return ((Node) child).getParent();
  46                 } catch (RepositoryException e) {
  47                         throw new AkbException("Error while getting parent node", e);
  48                 }
  49         }
  50
  51         public Object[] getChildren(Object parent) {
  52                 try {
  53                         List<Node> nodes = JcrUtils.nodeIteratorToList(((Node) parent)
  54                                         .getNodes());
  55                         return nodes.toArray();
  56                 } catch (RepositoryException e) {
  57                         throw new AkbException("Error while getting children nodes", e);
  58                 }
  59         }
  60
  61         public boolean hasChildren(Object parent) {
  62                 try {
  63                         return ((Node) parent).hasNodes();
  64                 } catch (RepositoryException e) {
  65                         throw new AkbException("Error while checking children nodes", e);
  66                 }
  67         }
  68
  69         public void dispose() {
  70                 // FIXME implement if needed
  71         }
  72
  73         public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
  74         }
  75 }