001 /*
002 * Copyright 2008-2017 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.swing.editors;
017
018 import griffon.core.editors.AbstractPropertyEditor;
019 import griffon.metadata.PropertyEditorFor;
020
021 import java.awt.Polygon;
022 import java.util.List;
023
024 import static griffon.util.GriffonNameUtils.isBlank;
025
026 /**
027 * @author Andres Almiray
028 * @since 2.0.0
029 */
030 @PropertyEditorFor(Polygon.class)
031 public class PolygonPropertyEditor extends AbstractPropertyEditor {
032 @Override
033 public String getAsText() {
034 if (null == getValue()) return null;
035 Polygon p = (Polygon) getValue();
036 StringBuilder b = new StringBuilder();
037 for (int i = 0; i < p.npoints; i++) {
038 if (i != 0) {
039 b.append(", ");
040 }
041 b.append(p.xpoints[i])
042 .append(", ")
043 .append(p.ypoints[i]);
044 }
045 return b.toString();
046 }
047
048 @Override
049 protected void setValueInternal(Object value) {
050 if (null == value) {
051 super.setValueInternal(null);
052 } else if (value instanceof CharSequence) {
053 handleAsString(String.valueOf(value));
054 } else if (value instanceof List) {
055 handleAsList((List) value);
056 } else if (value instanceof Polygon) {
057 super.setValueInternal(value);
058 } else {
059 throw illegalValue(value, Polygon.class);
060 }
061 }
062
063 protected void handleAsString(String str) {
064 if (isBlank(str)) {
065 super.setValueInternal(null);
066 return;
067 }
068
069 String[] parts = str.split(",");
070 if (parts.length % 2 == 1) {
071 throw illegalValue(str, Polygon.class);
072 }
073
074 int npoints = parts.length / 2;
075 int[] xpoints = new int[npoints];
076 int[] ypoints = new int[npoints];
077
078 for (int i = 0; i < npoints; i++) {
079 xpoints[i] = parse(parts[2 * i]);
080 ypoints[i] = parse(parts[(2 * i) + 1]);
081 }
082 super.setValueInternal(new Polygon(xpoints, ypoints, npoints));
083 }
084
085 protected void handleAsList(List<?> list) {
086 if (list.isEmpty()) {
087 super.setValueInternal(null);
088 return;
089 }
090
091 if (list.size() % 2 == 1) {
092 throw illegalValue(list, Polygon.class);
093 }
094
095 int npoints = list.size() / 2;
096 int[] xpoints = new int[npoints];
097 int[] ypoints = new int[npoints];
098
099 for (int i = 0; i < npoints; i++) {
100 xpoints[i] = parseValue(list.get(2 * i));
101 ypoints[i] = parseValue(list.get((2 * i) + 1));
102 }
103 super.setValueInternal(new Polygon(xpoints, ypoints, npoints));
104 }
105
106 protected int parseValue(Object value) {
107 if (value instanceof CharSequence) {
108 return parse(String.valueOf(value));
109 } else if (value instanceof Number) {
110 return parse((Number) value);
111 }
112 throw illegalValue(value, Polygon.class);
113 }
114
115 protected int parse(String val) {
116 try {
117 return Integer.parseInt(val.trim());
118 } catch (NumberFormatException e) {
119 throw illegalValue(val, Polygon.class, e);
120 }
121 }
122
123 protected int parse(Number val) {
124 return val.intValue();
125 }
126 }
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