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.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 public String getAsText() {
033 if (null == getValue()) return null;
034 Polygon p = (Polygon) getValue();
035 StringBuilder b = new StringBuilder();
036 for (int i = 0; i < p.npoints; i++) {
037 if (i != 0) {
038 b.append(", ");
039 }
040 b.append(p.xpoints[i])
041 .append(", ")
042 .append(p.ypoints[i]);
043 }
044 return b.toString();
045 }
046
047 protected void setValueInternal(Object value) {
048 if (null == value) {
049 super.setValueInternal(null);
050 } else if (value instanceof CharSequence) {
051 handleAsString(String.valueOf(value));
052 } else if (value instanceof List) {
053 handleAsList((List) value);
054 } else if (value instanceof Polygon) {
055 super.setValueInternal(value);
056 } else {
057 throw illegalValue(value, Polygon.class);
058 }
059 }
060
061 private void handleAsString(String str) {
062 if (isBlank(str)) {
063 super.setValueInternal(null);
064 return;
065 }
066
067 String[] parts = str.split(",");
068 if (parts.length % 2 == 1) {
069 throw illegalValue(str, Polygon.class);
070 }
071
072 int npoints = parts.length / 2;
073 int[] xpoints = new int[npoints];
074 int[] ypoints = new int[npoints];
075
076 for (int i = 0; i < npoints; i++) {
077 xpoints[i] = parse(parts[2 * i]);
078 ypoints[i] = parse(parts[(2 * i) + 1]);
079 }
080 super.setValueInternal(new Polygon(xpoints, ypoints, npoints));
081 }
082
083 private void handleAsList(List<?> list) {
084 if (list.isEmpty()) {
085 super.setValueInternal(null);
086 return;
087 }
088
089 if (list.size() % 2 == 1) {
090 throw illegalValue(list, Polygon.class);
091 }
092
093 int npoints = list.size() / 2;
094 int[] xpoints = new int[npoints];
095 int[] ypoints = new int[npoints];
096
097 for (int i = 0; i < npoints; i++) {
098 xpoints[i] = parseValue(list.get(2 * i));
099 ypoints[i] = parseValue(list.get((2 * i) + 1));
100 }
101 super.setValueInternal(new Polygon(xpoints, ypoints, npoints));
102 }
103
104 private int parseValue(Object value) {
105 if (value instanceof CharSequence) {
106 return parse(String.valueOf(value));
107 } else if (value instanceof Number) {
108 return parse((Number) value);
109 }
110 throw illegalValue(value, Polygon.class);
111 }
112
113 private int parse(String val) {
114 try {
115 return Integer.parseInt(val.trim());
116 } catch (NumberFormatException e) {
117 throw illegalValue(val, Polygon.class, e);
118 }
119 }
120
121 private int parse(Number val) {
122 return val.intValue();
123 }
124 }
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