01 /*
02 * SPDX-License-Identifier: Apache-2.0
03 *
04 * Copyright 2008-2017 the original author or authors.
05 *
06 * Licensed under the Apache License, Version 2.0 (the "License");
07 * you may not use this file except in compliance with the License.
08 * You may obtain a copy of the License at
09 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18 package griffon.javafx.beans.binding;
19
20 import javafx.beans.value.ChangeListener;
21 import javafx.beans.value.ObservableValue;
22
23 import javax.annotation.Nonnull;
24
25 import static java.util.Objects.requireNonNull;
26
27 /**
28 * @author Andres Almiray
29 * @since 2.11.0
30 */
31 public class ChangeListenerDecorator<T> implements ChangeListener<T> {
32 private final ChangeListener<? super T> delegate;
33
34 public ChangeListenerDecorator(@Nonnull ChangeListener<? super T> delegate) {
35 this.delegate = requireNonNull(delegate, "Argument 'delegate' must not be null");
36 }
37
38 @Nonnull
39 protected final ChangeListener<? super T> getDelegate() {
40 return delegate;
41 }
42
43 @Override
44 public void changed(final ObservableValue<? extends T> observable, final T oldValue, final T newValue) {
45 delegate.changed(observable, oldValue, newValue);
46 }
47
48 @Override
49 public boolean equals(Object o) {
50 return this == o || delegate.equals(o);
51 }
52
53 @Override
54 public int hashCode() {
55 return delegate.hashCode();
56 }
57
58 @Override
59 public String toString() {
60 return getClass().getName() + ":" + delegate.toString();
61 }
62 }
|