1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.data.preferences;
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3 |
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4 | import org.openstreetmap.josm.Main;
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5 | import org.openstreetmap.josm.tools.Logging;
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6 |
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7 | /**
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8 | * Abstract base class for properties with {@link Enum} value, where the preference
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9 | * key is generated from a list of parameters.
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10 | * @param <T> the {@code Enum} class
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11 | */
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12 | public abstract class ParametrizedEnumProperty<T extends Enum<T>> {
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13 |
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14 | protected final T defaultValue;
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15 | protected final Class<T> enumClass;
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16 |
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17 | public ParametrizedEnumProperty(Class<T> enumClass, T defaultValue) {
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18 | this.defaultValue = defaultValue;
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19 | this.enumClass = enumClass;
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20 | }
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21 |
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22 | protected abstract String getKey(String... params);
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23 |
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24 | public T get(String... params) {
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25 | return parse(Main.pref.get(getKey(params), defaultValue.name()));
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26 | }
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27 |
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28 | public boolean put(T value, String... params) {
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29 | return Main.pref.put(getKey(params), value.name());
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30 | }
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31 |
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32 | protected T parse(String s) {
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33 | try {
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34 | return Enum.valueOf(enumClass, s);
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35 | } catch (IllegalArgumentException e) {
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36 | Logging.trace(e);
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37 | return defaultValue;
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38 | }
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39 | }
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40 | }
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