i18n/providers/SimpleContentProvider.java

   1 /*
   2  * Copyright (C) 2007-2012 Mathieu Baudier
   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.demo.i18n.providers;
  17
  18 import java.util.ArrayList;
  19 import java.util.List;
  20
  21 import org.argeo.demo.i18n.model.Place;
  22 import org.argeo.eclipse.ui.TreeParent;
  23 import org.eclipse.jface.viewers.ITreeContentProvider;
  24 import org.eclipse.jface.viewers.Viewer;
  25
  26 /**
  27  * Implementation of the {@code ITreeContentProvider} to display multiple
  28  * repository environment in a tree like structure
  29  *
  30  */
  31 public class SimpleContentProvider implements ITreeContentProvider {
  32         // private final static Log log =
  33         // LogFactory.getLog(SimpleContentProvider.class);
  34
  35         public SimpleContentProvider() {
  36         }
  37
  38         /**
  39          * Sends back the first level of the Tree. Independent from inputElement
  40          * that can be null. Values are hard coded here.
  41          */
  42         public Object[] getElements(Object inputElement) {
  43                 List<Object> objs = new ArrayList<Object>();
  44                 objs.add(new Place("Home", "My house, my family",
  45                                 "12 rue du bac, Paris"));
  46                 objs.add(new Place("Office", "Where I work",
  47                                 "100 av des champs Elysées"));
  48                 objs.add(new Place("School",
  49                                 "The place where the children spend their days",
  50                                 "103 Avenue montaigne, Paris"));
  51                 return objs.toArray();
  52         }
  53
  54         public Object[] getChildren(Object parentElement) {
  55                 if (parentElement instanceof TreeParent)
  56                         return ((TreeParent) parentElement).getChildren();
  57                 else {
  58                         return new Object[0];
  59                 }
  60         }
  61
  62         public Object getParent(Object element) {
  63                 if (element instanceof TreeParent) {
  64                         return ((TreeParent) element).getParent();
  65                 } else
  66                         return null;
  67         }
  68
  69         public boolean hasChildren(Object element) {
  70                 if (element instanceof TreeParent) {
  71                         TreeParent tp = (TreeParent) element;
  72                         return tp.hasChildren();
  73                 }
  74                 return false;
  75         }
  76
  77         public void dispose() {
  78         }
  79
  80         public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
  81         }
  82 }