01 /*
02 * Copyright 2008-2017 the original author or authors.
03 *
04 * Licensed under the Apache License, Version 2.0 (the "License");
05 * you may not use this file except in compliance with the License.
06 * You may obtain a copy of the License at
07 *
08 * http://www.apache.org/licenses/LICENSE-2.0
09 *
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 griffon.javafx.beans.binding;
17
18 import javafx.collections.SetChangeListener;
19
20 import javax.annotation.Nonnull;
21
22 import static java.util.Objects.requireNonNull;
23
24 /**
25 * @author Andres Almiray
26 * @since 2.11.0
27 */
28 public class SetChangeListenerDecorator<E> implements SetChangeListener<E> {
29 private final SetChangeListener<E> delegate;
30
31 public SetChangeListenerDecorator(@Nonnull SetChangeListener<E> delegate) {
32 this.delegate = requireNonNull(delegate, "Argument 'delegate' must not be null");
33 }
34
35 @Nonnull
36 protected final SetChangeListener<E> getDelegate() {
37 return delegate;
38 }
39
40 @Override
41 public void onChanged(final Change<? extends E> change) {
42 delegate.onChanged(change);
43 }
44
45 @Override
46 public boolean equals(Object o) {
47 return this == o || delegate.equals(o);
48 }
49
50 @Override
51 public int hashCode() {
52 return delegate.hashCode();
53 }
54
55 @Override
56 public String toString() {
57 return getClass().getName() + ":" + delegate.toString();
58 }
59 }
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