001/*
002 *  Licensed to the Apache Software Foundation (ASF) under one
003 *  or more contributor license agreements.  See the NOTICE file
004 *  distributed with this work for additional information
005 *  regarding copyright ownership.  The ASF licenses this file
006 *  to you under the Apache License, Version 2.0 (the
007 *  "License"); you may not use this file except in compliance
008 *  with the License.  You may obtain a copy of the License at
009 *
010 *        http://www.apache.org/licenses/LICENSE-2.0
011 *
012 *  Unless required by applicable law or agreed to in writing,
013 *  software distributed under the License is distributed on an
014 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 *  KIND, either express or implied.  See the License for the
016 *  specific language governing permissions and limitations
017 *  under the License.
018 */
019
020package org.apache.isis.core.progmodel.facets.value.color;
021
022import java.text.DecimalFormat;
023
024import org.apache.isis.applib.adapters.EncoderDecoder;
025import org.apache.isis.applib.adapters.Parser;
026import org.apache.isis.applib.profiles.Localization;
027import org.apache.isis.applib.value.Color;
028import org.apache.isis.core.commons.config.IsisConfiguration;
029import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
030import org.apache.isis.core.metamodel.facetapi.Facet;
031import org.apache.isis.core.metamodel.facetapi.FacetHolder;
032import org.apache.isis.core.metamodel.facets.object.parseable.TextEntryParseException;
033import org.apache.isis.core.progmodel.facets.object.value.ValueSemanticsProviderAndFacetAbstract;
034import org.apache.isis.core.progmodel.facets.object.value.ValueSemanticsProviderContext;
035
036public class ColorValueSemanticsProvider extends ValueSemanticsProviderAndFacetAbstract<Color> implements ColorValueFacet {
037
038    public static Class<? extends Facet> type() {
039        return ColorValueFacet.class;
040    }
041
042    private static final Color DEFAULT_VALUE = Color.BLACK;
043    private static final int TYPICAL_LENGTH = 4;
044
045    /**
046     * Required because implementation of {@link Parser} and
047     * {@link EncoderDecoder}.
048     */
049    public ColorValueSemanticsProvider() {
050        this(null, null, null);
051    }
052
053    public ColorValueSemanticsProvider(final FacetHolder holder, final IsisConfiguration configuration, final ValueSemanticsProviderContext context) {
054        super(type(), holder, Color.class, TYPICAL_LENGTH, Immutability.IMMUTABLE, EqualByContent.NOT_HONOURED, DEFAULT_VALUE, configuration, context);
055    }
056
057    // //////////////////////////////////////////////////////////////////
058    // Parser
059    // //////////////////////////////////////////////////////////////////
060
061    @Override
062    protected Color doParse(final Object context, final String text) {
063        try {
064            if (text.startsWith("0x")) {
065                return new Color(Integer.parseInt(text.substring(2), 16));
066            } else if (text.startsWith("#")) {
067                return new Color(Integer.parseInt(text.substring(1), 16));
068            } else {
069                return new Color(Integer.parseInt(text));
070            }
071        } catch (final NumberFormatException e) {
072            throw new TextEntryParseException("Not a number " + text, e);
073        }
074    }
075
076    @Override
077    public String titleString(final Object object, final Localization localization) {
078        final Color color = (Color) object;
079        return color.title();
080    }
081
082    @Override
083    public String titleStringWithMask(final Object object, final String usingMask) {
084        final Color color = (Color) object;
085        return titleString(new DecimalFormat(usingMask), color.intValue());
086    }
087
088    // //////////////////////////////////////////////////////////////////
089    // Encode, Decode
090    // //////////////////////////////////////////////////////////////////
091
092    @Override
093    protected String doEncode(final Object object) {
094        final Color color = (Color) object;
095        return Integer.toHexString(color.intValue());
096    }
097
098    @Override
099    protected Color doRestore(final String data) {
100        return new Color(Integer.parseInt(data, 16));
101    }
102
103    // //////////////////////////////////////////////////////////////////
104    // ColorValueFacet
105    // //////////////////////////////////////////////////////////////////
106
107    @Override
108    public int colorValue(final ObjectAdapter object) {
109        if (object == null) {
110            return 0;
111        }
112        final Color color = (Color) object.getObject();
113        return color.intValue();
114    }
115
116    @Override
117    public ObjectAdapter createValue(final ObjectAdapter object, final int colorAsInt) {
118        final Color color = new Color(colorAsInt);
119        return getAdapterManager().adapterFor(color);
120    }
121
122    @Override
123    public String toString() {
124        return "ColorValueSemanticsProvider";
125    }
126
127}