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