|
1
11
12 package org.eclipse.core.internal.databinding.observable;
13
14 import java.util.Collection  ;
15 import java.util.Collections ;
16 import java.util.Iterator ;
17 import java.util.List ;
18 import java.util.ListIterator ;
19
20 import org.eclipse.core.databinding.observable.IChangeListener;
21 import org.eclipse.core.databinding.observable.IStaleListener;
22 import org.eclipse.core.databinding.observable.Realm;
23 import org.eclipse.core.databinding.observable.list.IListChangeListener;
24 import org.eclipse.core.databinding.observable.list.IObservableList;
25
26
29 public class EmptyObservableList implements IObservableList {
30
31 private static final List emptyList = Collections.EMPTY_LIST;
32
33 private Realm realm;
34
35
41 public EmptyObservableList(Realm realm) {
42 this.realm = realm;
43 }
44
45 public void addListChangeListener(IListChangeListener listener) {
46 }
47
48 public void removeListChangeListener(IListChangeListener listener) {
49 }
50
51 public Object getElementType() {
52 return null;
53 }
54
55 public int size() {
56 return 0;
57 }
58
59 public boolean isEmpty() {
60 return true;
61 }
62
63 public boolean contains(Object o) {
64 return false;
65 }
66
67 public Iterator iterator() {
68 return emptyList.iterator();
69 }
70
71 public Object [] toArray() {
72 return emptyList.toArray();
73 }
74
75 public Object [] toArray(Object [] a) {
76 return emptyList.toArray(a);
77 }
78
79 public boolean add(Object o) {
80 throw new UnsupportedOperationException ();
81 }
82
83 public boolean remove(Object o) {
84 throw new UnsupportedOperationException ();
85 }
86
87 public boolean containsAll(Collection c) {
88 return c.isEmpty();
89 }
90
91 public boolean addAll(Collection c) {
92 throw new UnsupportedOperationException ();
93 }
94
95 public boolean retainAll(Collection c) {
96 throw new UnsupportedOperationException ();
97 }
98
99 public boolean removeAll(Collection c) {
100 throw new UnsupportedOperationException ();
101 }
102
103 public void clear() {
104 throw new UnsupportedOperationException ();
105 }
106
107 public void addChangeListener(IChangeListener listener) {
108 }
109
110 public void removeChangeListener(IChangeListener listener) {
111 }
112
113 public void addStaleListener(IStaleListener listener) {
114 }
115
116 public void removeStaleListener(IStaleListener listener) {
117 }
118
119 public boolean isStale() {
120 return false;
121 }
122
123 public void dispose() {
124 }
125
126 public boolean addAll(int index, Collection c) {
127 throw new UnsupportedOperationException ();
128 }
129
130 public Object get(int index) {
131 return emptyList.get(index);
132 }
133
134 public int indexOf(Object o) {
135 return -1;
136 }
137
138 public int lastIndexOf(Object o) {
139 return -1;
140 }
141
142 public ListIterator listIterator() {
143 return emptyList.listIterator();
144 }
145
146 public ListIterator listIterator(int index) {
147 return emptyList.listIterator(index);
148 }
149
150 public Object remove(int index) {
151 throw new UnsupportedOperationException ();
152 }
153
154 public Object set(int index, Object element) {
155 throw new UnsupportedOperationException ();
156 }
157
158 public List subList(int fromIndex, int toIndex) {
159 return emptyList.subList(fromIndex, toIndex);
160 }
161
162 public void add(int arg0, Object arg1) {
163 throw new UnsupportedOperationException ();
164 }
165
166 public Realm getRealm() {
167 return realm;
168 }
169
170 }
171 |
Popular Tags |
Java API By Example, From Geeks To Geeks.