001 /*
002 * Copyright 2008-2015 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016 package griffon.pivot.editors;
017
018 import griffon.core.editors.AbstractPropertyEditor;
019 import griffon.metadata.PropertyEditorFor;
020 import org.apache.pivot.wtk.Insets;
021
022 import java.util.List;
023 import java.util.Map;
024
025 import static griffon.util.GriffonNameUtils.isBlank;
026
027 /**
028 * @author Andres Almiray
029 * @since 2.0.0
030 */
031 @PropertyEditorFor(Insets.class)
032 public class InsetsPropertyEditor extends AbstractPropertyEditor {
033 public String getAsText() {
034 if (null == getValue()) return null;
035 Insets i = (Insets) getValue();
036 return i.top + ", " + i.left + ", " + i.bottom + ", " + i.right;
037 }
038
039 protected void setValueInternal(Object value) {
040 if (null == value) {
041 super.setValueInternal(null);
042 } else if (value instanceof CharSequence) {
043 handleAsString(String.valueOf(value));
044 } else if (value instanceof List) {
045 handleAsList((List) value);
046 } else if (value instanceof Map) {
047 handleAsMap((Map) value);
048 } else if (value instanceof Number) {
049 handleAsNumber((Number) value);
050 } else if (value instanceof Insets) {
051 super.setValueInternal(value);
052 } else {
053 throw illegalValue(value, Insets.class);
054 }
055 }
056
057 private void handleAsString(String str) {
058 if (isBlank(str)) {
059 super.setValueInternal(null);
060 return;
061 }
062
063 int t = 0;
064 int l = 0;
065 int r = 0;
066 int b = 0;
067 String[] parts = str.split(",");
068 switch (parts.length) {
069 case 4:
070 b = parseValue(parts[3]);
071 case 3:
072 r = parseValue(parts[2]);
073 case 2:
074 l = parseValue(parts[1]);
075 case 1:
076 t = parseValue(parts[0]);
077 super.setValueInternal(new Insets(t, l, r, b));
078 break;
079 default:
080 throw illegalValue(str, Insets.class);
081 }
082 }
083
084 private void handleAsList(List<?> list) {
085 if(list.isEmpty()) {
086 super.setValueInternal(null);
087 return;
088 }
089
090 int t = 0;
091 int l = 0;
092 int r = 0;
093 int b = 0;
094 switch (list.size()) {
095 case 4:
096 b = parseValue(list.get(3));
097 case 3:
098 r = parseValue(list.get(2));
099 case 2:
100 l = parseValue(list.get(1));
101 case 1:
102 t = parseValue(list.get(0));
103 super.setValueInternal(new Insets(t, l, r, b));
104 break;
105 default:
106 throw illegalValue(list, Insets.class);
107 }
108 }
109
110 private void handleAsMap(Map<?, ?> map) {
111 if(map.isEmpty()) {
112 super.setValueInternal(null);
113 return;
114 }
115
116 int t = getMapValue(map, "top", 0);
117 int l = getMapValue(map, "left", 0);
118 int r = getMapValue(map, "right", 0);
119 int b = getMapValue(map, "bottom", 0);
120 super.setValueInternal(new Insets(t, l, r, b));
121 }
122
123 private int parseValue(Object value) {
124 if (value instanceof CharSequence) {
125 return parse(String.valueOf(value));
126 } else if (value instanceof Number) {
127 return parse((Number) value);
128 }
129 throw illegalValue(value, Insets.class);
130 }
131
132 private int parse(String val) {
133 try {
134 return Integer.parseInt(val.trim());
135 } catch (NumberFormatException e) {
136 throw illegalValue(val, Insets.class, e);
137 }
138 }
139
140 private int parse(Number val) {
141 return val.intValue();
142 }
143
144 private int getMapValue(Map<?, ?> map, String key, int defaultValue) {
145 Object val = map.get(key);
146 if (null == val) val = map.get(String.valueOf(key.charAt(0)));
147 if (null == val) {
148 return defaultValue;
149 } else if (val instanceof CharSequence) {
150 return parse(String.valueOf(val));
151 } else if (val instanceof Number) {
152 return parse((Number) val);
153 }
154 throw illegalValue(map, Insets.class);
155 }
156
157 private void handleAsNumber(Number value) {
158 int c = parse(value);
159 super.setValueInternal(new Insets(c, c, c, c));
160 }
161 }
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