1 /*

     2  * CDDL HEADER START

     3  *

     4  * The contents of this file are subject to the terms of the

     5  * Common Development and Distribution License (the "License").

     6  * You may not use this file except in compliance with the License.

     7  *

     8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE

     9  * or http://www.opensolaris.org/os/licensing.

    10  * See the License for the specific language governing permissions

    11  * and limitations under the License.

    12  *

    13  * When distributing Covered Code, include this CDDL HEADER in each

    14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.

    15  * If applicable, add the following below this CDDL HEADER, with the

    16  * fields enclosed by brackets "[]" replaced with your own identifying

    17  * information: Portions Copyright [yyyy] [name of copyright owner]

    18  *

    19  * CDDL HEADER END

    20  */

    21 

    22 /*

    23  * Copyright (c) 2010, 2012, Oracle and/or its affiliates. All rights reserved.

    24  */

    25 

    26 package com.oracle.solaris.vp.panel.common.model;

    27 

    28 import java.beans.PropertyChangeListener;

    29 import java.util.*;

    30 import com.oracle.solaris.vp.util.misc.event.*;

    31 

    32 /**

    33  * Simple, efficient implementation of an empty ManagedObject.

    34  */

    35 public class EmptyManagedObject<T extends ManagedObject>

    36     implements ManagedObject<T>

    37 {

    38     private String id_ = "empty";

    39     private String name_ = id_;

    40     private String desc_ = id_;

    41     private IntervalListeners iListeners_ = new IntervalListeners();

    42     private PropertyChangeListeners pListeners_ =

    43 	new PropertyChangeListeners();

    44 

    45     public EmptyManagedObject() {

    46     }

    47 

    48     public EmptyManagedObject(String id, String name, String desc) {

    49 	id_ = id;

    50 	name_ = name;

    51 	desc_ = desc;

    52     }

    53 

    54     @Override

    55     public void dispose() {

    56     }

    57 

    58     @Override

    59     public String getId() {

    60 	return (id_);

    61     }

    62 

    63     @Override

    64     public void addPropertyChangeListener(PropertyChangeListener l) {

    65 	pListeners_.add(l);

    66     }

    67 

    68     @Override

    69     public void addPropertyChangeListener(String property,

    70 	PropertyChangeListener l) {

    71 

    72 	pListeners_.add(property, l);

    73     }

    74 

    75     @Override

    76     public String getDescription() {

    77 	return (desc_);

    78     }

    79 

    80     @Override

    81     public List<T> getChildren() {

    82 	return (Collections.emptyList());

    83     }

    84 

    85     @Override

    86     public Object getChildrenLock() {

    87 	return (this);

    88     }

    89 

    90     @Override

    91     public String getName() {

    92 	return (name_);

    93     }

    94 

    95     @Override

    96     public ManagedObjectStatus getStatus() {

    97 	return (ManagedObjectStatus.HEALTHY);

    98     }

    99 

   100     @Override

   101     public String getStatusText() {

   102 	return (null);

   103     }

   104 

   105     @Override

   106     public boolean removePropertyChangeListener(PropertyChangeListener l) {

   107 	return (pListeners_.remove(l));

   108     }

   109 

   110     @Override

   111     public boolean removePropertyChangeListener(String property,

   112 	PropertyChangeListener l) {

   113 

   114 	return (pListeners_.remove(property, l));

   115     }

   116 

   117     @Override

   118     public void addIntervalListener(IntervalListener l) {

   119 	iListeners_.add(l);

   120     }

   121 

   122     @Override

   123     public boolean removeIntervalListener(IntervalListener l) {

   124 	return (iListeners_.remove(l));

   125     }

   126 }