001 /*
002 * SPDX-License-Identifier: Apache-2.0
003 *
004 * Copyright 2008-2017 the original author or authors.
005 *
006 * Licensed under the Apache License, Version 2.0 (the "License");
007 * you may not use this file except in compliance with the License.
008 * 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, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018 package griffon.swing.editors;
019
020 import griffon.core.editors.AbstractPropertyEditor;
021 import griffon.core.formatters.Formatter;
022 import griffon.core.formatters.ParseException;
023 import griffon.metadata.PropertyEditorFor;
024 import griffon.swing.formatters.ColorFormatter;
025
026 import java.awt.Color;
027 import java.util.ArrayList;
028 import java.util.List;
029 import java.util.Map;
030
031 import static griffon.util.GriffonNameUtils.isBlank;
032 import static griffon.util.GriffonNameUtils.isNotBlank;
033
034
035 /**
036 * @author Andres Almiray
037 * @author Alexander Klein
038 * @since 2.0.0
039 */
040 @PropertyEditorFor(Color.class)
041 public class ColorPropertyEditor extends AbstractPropertyEditor {
042 public static String format(Color color) {
043 return ColorFormatter.LONG.format(color);
044 }
045
046 @Override
047 public String getAsText() {
048 if (null == getValue()) { return null; }
049 return isBlank(getFormat()) ? format((Color) getValueInternal()) : getFormattedValue();
050 }
051
052 @Override
053 protected void setValueInternal(Object value) {
054 if (null == value) {
055 super.setValueInternal(null);
056 } else if (value instanceof CharSequence) {
057 handleAsString(String.valueOf(value).trim());
058 } else if (value instanceof List) {
059 handleAsList((List) value);
060 } else if (value instanceof Map) {
061 handleAsMap((Map) value);
062 } else if (value instanceof Number) {
063 handleAsNumber((Number) value);
064 } else if (value instanceof Color) {
065 super.setValueInternal(value);
066 } else {
067 throw illegalValue(value, Color.class);
068 }
069 }
070
071 @Override
072 protected Formatter<Color> resolveFormatter() {
073 return isNotBlank(getFormat()) ? ColorFormatter.getInstance(getFormat()) : null;
074 }
075
076 protected void handleAsString(String str) {
077 try {
078 if (isBlank(str)) {
079 super.setValueInternal(null);
080 } else {
081 super.setValueInternal(ColorFormatter.parseColor(str));
082 }
083 } catch (ParseException e) {
084 throw illegalValue(str, Color.class, e);
085 }
086 }
087
088 protected void handleAsList(List<?> list) {
089 if (list.isEmpty()) {
090 super.setValueInternal(null);
091 return;
092 }
093
094 List<Object> values = new ArrayList<>();
095 values.addAll(list);
096 switch (list.size()) {
097 case 3:
098 values.add(255);
099 break;
100 case 4:
101 // ok
102 break;
103 default:
104 throw illegalValue(list, Color.class);
105 }
106 for (int i = 0, valuesSize = values.size(); i < valuesSize; i++) {
107 Object val = values.get(i);
108 if (val instanceof Number) {
109 values.set(i, parse((Number) val));
110 } else if (val instanceof CharSequence) {
111 values.set(i, parse(String.valueOf(val)));
112 } else {
113 throw illegalValue(list, Color.class);
114 }
115 }
116 super.setValueInternal(
117 new Color(
118 (Integer) values.get(0),
119 (Integer) values.get(1),
120 (Integer) values.get(2),
121 (Integer) values.get(3)
122 )
123 );
124 }
125
126 protected void handleAsMap(Map<?, ?> map) {
127 if (map.isEmpty()) {
128 super.setValueInternal(null);
129 return;
130 }
131
132 int r = getMapValue(map, "red", 0);
133 int g = getMapValue(map, "green", 0);
134 int b = getMapValue(map, "blue", 0);
135 int a = getMapValue(map, "alpha", 255);
136 super.setValueInternal(new Color(r, g, b, a));
137 }
138
139 protected int parse(String val) {
140 try {
141 return Integer.parseInt(String.valueOf(val).trim(), 16) & 0xFF;
142 } catch (NumberFormatException e) {
143 throw illegalValue(val, Color.class, e);
144 }
145 }
146
147 protected int parse(Number val) {
148 return val.intValue() & 0xFF;
149 }
150
151 protected int getMapValue(Map<?, ?> map, String key, int defaultValue) {
152 Object val = map.get(key);
153 if (null == val) { val = map.get(String.valueOf(key.charAt(0))); }
154 if (null == val) {
155 return defaultValue;
156 } else if (val instanceof CharSequence) {
157 return parse(String.valueOf(val));
158 } else if (val instanceof Number) {
159 return parse((Number) val);
160 }
161 throw illegalValue(map, Color.class);
162 }
163
164 protected void handleAsNumber(Number value) {
165 int c = parse(value);
166 super.setValueInternal(new Color(c, c, c, 255));
167 }
168 }
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