org.eclipse.linuxtools.tmf.ui/src/org/eclipse/linuxtools/tmf/ui/widgets/timegraph/widgets/PlainSelection.java

   1 /*****************************************************************************
   2  * Copyright (c) 2007 Intel Corporation.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Eclipse Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/epl-v10.html
   7  *
   8  * Contributors:
   9  *    Intel Corporation - Initial API and implementation
  10  *    Ruslan A. Scherbakov, Intel - Initial API and implementation
  11  *    Alvaro Sanchex-Leon - Udpated for TMF
  12  *
  13  * $Id: PlainSelection.java,v 1.1 2007/04/20 13:06:49 ewchan Exp $
  14  *****************************************************************************/
  15
  16 package org.eclipse.linuxtools.tmf.ui.widgets.timegraph.widgets;
  17
  18 import java.util.ArrayList;
  19 import java.util.Iterator;
  20 import java.util.List;
  21
  22 import org.eclipse.jface.viewers.IStructuredSelection;
  23
  24 public class PlainSelection implements IStructuredSelection {
  25
  26         List<Object> list = new ArrayList<Object>();
  27
  28         public PlainSelection() {
  29         }
  30
  31         public PlainSelection(Object sel) {
  32                 add(sel);
  33         }
  34
  35         public void add(Object sel) {
  36                 if (null != sel && !list.contains(sel))
  37                         list.add(sel);
  38         }
  39
  40         @Override
  41         public Object getFirstElement() {
  42                 if (!list.isEmpty())
  43                         return list.get(0);
  44                 return null;
  45         }
  46
  47         @Override
  48         public Iterator<Object> iterator() {
  49                 return list.iterator();
  50         }
  51
  52         @Override
  53         public int size() {
  54                 return list.size();
  55         }
  56
  57         @Override
  58         public Object[] toArray() {
  59                 return list.toArray();
  60         }
  61
  62         @Override
  63         public List<Object> toList() {
  64                 return list;
  65         }
  66
  67         @Override
  68         public boolean isEmpty() {
  69                 return list.isEmpty();
  70         }
  71 }