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.metadata.PropertyEditorFor;
022
023 import java.awt.Insets;
024 import java.util.List;
025 import java.util.Map;
026
027 import static griffon.util.GriffonNameUtils.isBlank;
028
029 /**
030 * @author Andres Almiray
031 * @author Alexander Klein
032 * @since 2.0.0
033 */
034 @PropertyEditorFor(Insets.class)
035 public class InsetsPropertyEditor extends AbstractPropertyEditor {
036 @Override
037 public String getAsText() {
038 if (null == getValue()) return null;
039 Insets i = (Insets) getValue();
040 return i.top + ", " + i.left + ", " + i.bottom + ", " + i.right;
041 }
042
043 @Override
044 protected void setValueInternal(Object value) {
045 if (null == value) {
046 super.setValueInternal(null);
047 } else if (value instanceof CharSequence) {
048 handleAsString(String.valueOf(value));
049 } else if (value instanceof List) {
050 handleAsList((List) value);
051 } else if (value instanceof Map) {
052 handleAsMap((Map) value);
053 } else if (value instanceof Number) {
054 handleAsNumber((Number) value);
055 } else if (value instanceof Insets) {
056 super.setValueInternal(value);
057 } else {
058 throw illegalValue(value, Insets.class);
059 }
060 }
061
062 protected void handleAsString(String str) {
063 if (isBlank(str)) {
064 super.setValueInternal(null);
065 return;
066 }
067
068 int t = 0;
069 int l = 0;
070 int r = 0;
071 int b = 0;
072 String[] parts = str.split(",");
073 switch (parts.length) {
074 case 4:
075 b = parseValue(parts[3]);
076 case 3:
077 r = parseValue(parts[2]);
078 case 2:
079 l = parseValue(parts[1]);
080 case 1:
081 t = parseValue(parts[0]);
082 super.setValueInternal(new Insets(t, l, r, b));
083 break;
084 default:
085 throw illegalValue(str, Insets.class);
086 }
087 }
088
089 protected void handleAsList(List<?> list) {
090 if(list.isEmpty()) {
091 super.setValueInternal(null);
092 return;
093 }
094
095 int t = 0;
096 int l = 0;
097 int r = 0;
098 int b = 0;
099 switch (list.size()) {
100 case 4:
101 b = parseValue(list.get(3));
102 case 3:
103 r = parseValue(list.get(2));
104 case 2:
105 l = parseValue(list.get(1));
106 case 1:
107 t = parseValue(list.get(0));
108 super.setValueInternal(new Insets(t, l, r, b));
109 break;
110 default:
111 throw illegalValue(list, Insets.class);
112 }
113 }
114
115 protected void handleAsMap(Map<?, ?> map) {
116 if(map.isEmpty()) {
117 super.setValueInternal(null);
118 return;
119 }
120
121 int t = getMapValue(map, "top", 0);
122 int l = getMapValue(map, "left", 0);
123 int r = getMapValue(map, "right", 0);
124 int b = getMapValue(map, "bottom", 0);
125 super.setValueInternal(new Insets(t, l, r, b));
126 }
127
128 protected int parseValue(Object value) {
129 if (value instanceof CharSequence) {
130 return parse(String.valueOf(value));
131 } else if (value instanceof Number) {
132 return parse((Number) value);
133 }
134 throw illegalValue(value, Insets.class);
135 }
136
137 protected int parse(String val) {
138 try {
139 return Integer.parseInt(val.trim());
140 } catch (NumberFormatException e) {
141 throw illegalValue(val, Insets.class, e);
142 }
143 }
144
145 protected int parse(Number val) {
146 return val.intValue();
147 }
148
149 protected int getMapValue(Map<?, ?> map, String key, int defaultValue) {
150 Object val = map.get(key);
151 if (null == val) val = map.get(String.valueOf(key.charAt(0)));
152 if (null == val) {
153 return defaultValue;
154 } else if (val instanceof CharSequence) {
155 return parse(String.valueOf(val));
156 } else if (val instanceof Number) {
157 return parse((Number) val);
158 }
159 throw illegalValue(map, Insets.class);
160 }
161
162 protected void handleAsNumber(Number value) {
163 int c = parse(value);
164 super.setValueInternal(new Insets(c, c, c, c));
165 }
166 }
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