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.InvalidationListener;
21 import javafx.beans.value.ChangeListener;
22 import javafx.beans.value.ObservableValue;
23
24 import javax.annotation.Nonnull;
25
26 import static java.util.Objects.requireNonNull;
27
28 /**
29 * @author Andres Almiray
30 * @since 2.11.0
31 */
32 public class ObservableValueDecorator<T> implements ObservableValue<T> {
33 private final ObservableValue<T> delegate;
34
35 public ObservableValueDecorator(@Nonnull ObservableValue<T> delegate) {
36 this.delegate = requireNonNull(delegate, "Argument 'delegate' must not be null");
37 }
38
39 @Nonnull
40 protected final ObservableValue<T> getDelegate() {
41 return delegate;
42 }
43
44 @Override
45 public void addListener(ChangeListener<? super T> listener) {
46 delegate.addListener(listener);
47 }
48
49 @Override
50 public void removeListener(ChangeListener<? super T> listener) {
51 delegate.removeListener(listener);
52 }
53
54 @Override
55 public T getValue() {
56 return delegate.getValue();
57 }
58
59 @Override
60 public void addListener(InvalidationListener listener) {
61 delegate.addListener(listener);
62 }
63
64 @Override
65 public void removeListener(InvalidationListener listener) {
66 delegate.removeListener(listener);
67 }
68
69 @Override
70 public boolean equals(Object o) {
71 return this == o || delegate.equals(o);
72 }
73
74 @Override
75 public int hashCode() {
76 return delegate.hashCode();
77 }
78
79 @Override
80 public String toString() {
81 return getClass().getName() + ":" + delegate.toString();
82 }
83 }
|