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.collections;
19
20 import com.sun.javafx.collections.MapListenerHelper;
21 import javafx.beans.InvalidationListener;
22 import javafx.collections.MapChangeListener;
23 import javafx.collections.ObservableMap;
24
25 import java.util.AbstractMap;
26
27 /**
28 * @author Andres Almiray
29 * @since 2.9.0
30 */
31 public abstract class ObservableMapBase<K, V> extends AbstractMap<K, V> implements ObservableMap<K, V> {
32 private MapListenerHelper<K, V> listenerHelper;
33
34 @Override
35 public final void addListener(MapChangeListener<? super K, ? super V> listener) {
36 listenerHelper = MapListenerHelper.addListener(listenerHelper, listener);
37 }
38
39 @Override
40 public final void removeListener(MapChangeListener<? super K, ? super V> listener) {
41 listenerHelper = MapListenerHelper.removeListener(listenerHelper, listener);
42 }
43
44 @Override
45 public final void addListener(InvalidationListener listener) {
46 listenerHelper = MapListenerHelper.addListener(listenerHelper, listener);
47 }
48
49 @Override
50 public final void removeListener(InvalidationListener listener) {
51 listenerHelper = MapListenerHelper.removeListener(listenerHelper, listener);
52 }
53
54 protected final void fireChange(MapChangeListener.Change<? extends K, ? extends V> change) {
55 MapListenerHelper.fireValueChangedEvent(listenerHelper, change);
56 }
57
58 /**
59 * Returns true if there are some listeners registered for this list.
60 */
61 protected final boolean hasListeners() {
62 return MapListenerHelper.hasListeners(listenerHelper);
63 }
64 }
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