Package: BooleanBoundFunctionSupport
BooleanBoundFunctionSupport
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BooleanBoundFunctionSupport(ChangingSource[]) |
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get() |
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Coverage
1: /*
2: * *************************************************************************************************************************************************************
3: *
4: * SteelBlue: DCI User Interfaces
5: * http://tidalwave.it/projects/steelblue
6: *
7: * Copyright (C) 2015 - 2025 by Tidalwave s.a.s. (http://tidalwave.it)
8: *
9: * *************************************************************************************************************************************************************
10: *
11: * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License.
12: * You may obtain a copy of the License at
13: *
14: * http://www.apache.org/licenses/LICENSE-2.0
15: *
16: * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
17: * CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
18: *
19: * *************************************************************************************************************************************************************
20: *
21: * git clone https://bitbucket.org/tidalwave/steelblue-src
22: * git clone https://github.com/tidalwave-it/steelblue-src
23: *
24: * *************************************************************************************************************************************************************
25: */
26: package it.tidalwave.ui.core.function;
27:
28: import jakarta.annotation.Nonnull;
29: import java.beans.PropertyChangeEvent;
30: import java.beans.PropertyChangeListener;
31: import it.tidalwave.ui.core.ChangingSource;
32:
33: /***************************************************************************************************************************************************************
34: *
35: * @since 2.0-ALPHA-1
36: * @author Fabrizio Giudici
37: *
38: **************************************************************************************************************************************************************/
39: @SuppressWarnings("this-escape")
40: public abstract class BooleanBoundFunctionSupport extends BoundFunctionSupport<Boolean, Boolean>
41: {
42: protected final ChangingSource<Boolean>[] sources;
43:
44: private boolean oldValue;
45:
46: private boolean newValue;
47:
48: private final PropertyChangeListener pcl = new PropertyChangeListener()
49: {
50: @Override
51: public void propertyChange (@Nonnull final PropertyChangeEvent event)
52: {
53: newValue = function();
54: fireValueChanged(oldValue, newValue);
55: oldValue = newValue;
56: }
57: };
58:
59: public BooleanBoundFunctionSupport (@Nonnull final ChangingSource<Boolean> ... sources)
60: {
61: this.sources = sources;
62:
63:• for (final var source : sources)
64: {
65: source.addPropertyChangeListener(pcl);
66: }
67:
68: oldValue = function();
69: }
70:
71: protected abstract boolean function();
72:
73: @Override @Nonnull
74: public final Boolean get()
75: {
76: return newValue;
77: }
78: }