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.Polygon;
024 import java.util.List;
025
026 import static griffon.util.GriffonNameUtils.isBlank;
027
028 /**
029 * @author Andres Almiray
030 * @since 2.0.0
031 */
032 @PropertyEditorFor(Polygon.class)
033 public class PolygonPropertyEditor extends AbstractPropertyEditor {
034 @Override
035 public String getAsText() {
036 if (null == getValue()) return null;
037 Polygon p = (Polygon) getValue();
038 StringBuilder b = new StringBuilder();
039 for (int i = 0; i < p.npoints; i++) {
040 if (i != 0) {
041 b.append(", ");
042 }
043 b.append(p.xpoints[i])
044 .append(", ")
045 .append(p.ypoints[i]);
046 }
047 return b.toString();
048 }
049
050 @Override
051 protected void setValueInternal(Object value) {
052 if (null == value) {
053 super.setValueInternal(null);
054 } else if (value instanceof CharSequence) {
055 handleAsString(String.valueOf(value));
056 } else if (value instanceof List) {
057 handleAsList((List) value);
058 } else if (value instanceof Polygon) {
059 super.setValueInternal(value);
060 } else {
061 throw illegalValue(value, Polygon.class);
062 }
063 }
064
065 protected void handleAsString(String str) {
066 if (isBlank(str)) {
067 super.setValueInternal(null);
068 return;
069 }
070
071 String[] parts = str.split(",");
072 if (parts.length % 2 == 1) {
073 throw illegalValue(str, Polygon.class);
074 }
075
076 int npoints = parts.length / 2;
077 int[] xpoints = new int[npoints];
078 int[] ypoints = new int[npoints];
079
080 for (int i = 0; i < npoints; i++) {
081 xpoints[i] = parse(parts[2 * i]);
082 ypoints[i] = parse(parts[(2 * i) + 1]);
083 }
084 super.setValueInternal(new Polygon(xpoints, ypoints, npoints));
085 }
086
087 protected void handleAsList(List<?> list) {
088 if (list.isEmpty()) {
089 super.setValueInternal(null);
090 return;
091 }
092
093 if (list.size() % 2 == 1) {
094 throw illegalValue(list, Polygon.class);
095 }
096
097 int npoints = list.size() / 2;
098 int[] xpoints = new int[npoints];
099 int[] ypoints = new int[npoints];
100
101 for (int i = 0; i < npoints; i++) {
102 xpoints[i] = parseValue(list.get(2 * i));
103 ypoints[i] = parseValue(list.get((2 * i) + 1));
104 }
105 super.setValueInternal(new Polygon(xpoints, ypoints, npoints));
106 }
107
108 protected int parseValue(Object value) {
109 if (value instanceof CharSequence) {
110 return parse(String.valueOf(value));
111 } else if (value instanceof Number) {
112 return parse((Number) value);
113 }
114 throw illegalValue(value, Polygon.class);
115 }
116
117 protected int parse(String val) {
118 try {
119 return Integer.parseInt(val.trim());
120 } catch (NumberFormatException e) {
121 throw illegalValue(val, Polygon.class, e);
122 }
123 }
124
125 protected int parse(Number val) {
126 return val.intValue();
127 }
128 }
|