Method: UnaryBoundFunctionSupport(ChangingSource)

1: /*
2: * *********************************************************************************************************************
3: *
4: * TheseFoolishThings: Miscellaneous utilities
5: * http://tidalwave.it/projects/thesefoolishthings
6: *
7: * Copyright (C) 2009 - 2023 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
12: * the License. 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
17: * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
18: * specific language governing permissions and limitations under the License.
19: *
20: * *********************************************************************************************************************
21: *
22: * git clone https://bitbucket.org/tidalwave/thesefoolishthings-src
23: * git clone https://github.com/tidalwave-it/thesefoolishthings-src
24: *
25: * *********************************************************************************************************************
26: */
27: package it.tidalwave.role.ui.function;
28:
29: import javax.annotation.Nonnull;
30: import it.tidalwave.role.ui.ChangingSource;
31:
32: /***********************************************************************************************************************
33: *
34: * @author Fabrizio Giudici
35: *
36: **********************************************************************************************************************/
37: public abstract class UnaryBoundFunctionSupport<DOMAIN_TYPE, CODOMAIN_TYPE>
38: extends BoundFunctionSupport<DOMAIN_TYPE, CODOMAIN_TYPE>
39: {
40: @Nonnull
41: protected final ChangingSource<DOMAIN_TYPE> source;
42:
43: protected CODOMAIN_TYPE value;
44:
45: protected UnaryBoundFunctionSupport (@Nonnull final ChangingSource<DOMAIN_TYPE> source)
46: {
47: this.source = source;
48: source.addPropertyChangeListener(event ->
49: onSourceChange((DOMAIN_TYPE)event.getOldValue(), (DOMAIN_TYPE)event.getNewValue()));
50: }
51:
52: protected void onSourceChange (@Nonnull final DOMAIN_TYPE oldSourceValue, @Nonnull final DOMAIN_TYPE newSourceValue)
53: {
54: final CODOMAIN_TYPE oldValue = function(oldSourceValue);
55: value = function(newSourceValue);
56: fireValueChanged(oldValue, value);
57: }
58:
59: @Nonnull
60: protected abstract CODOMAIN_TYPE function (final DOMAIN_TYPE value);
61:
62: @Override @Nonnull
63: public final CODOMAIN_TYPE get()
64: {
65: return value;
66: }
67: }