|
1 package org.objectstyle.cayenne.modeler.dialog.pref;
2
3 import java.awt.Component  ;
4 import java.beans.PropertyChangeListener ;
5 import java.io.ByteArrayOutputStream ;
6 import java.io.OutputStreamWriter ;
7 import java.util.Arrays ;
8 import java.util.Collections ;
9 import java.util.Vector ;
10
11 import javax.swing.DefaultComboBoxModel ;
12
13 import org.objectstyle.cayenne.modeler.util.CayenneController;
14 import org.objectstyle.cayenne.swing.BindingBuilder;
15 import org.objectstyle.cayenne.swing.ObjectBinding;
16 import org.objectstyle.cayenne.util.Util;
17
18
23 public class EncodingSelector extends CayenneController {
24
25 public static final String ENCODING_PROPERTY_BINDING = "encoding";
26
27 protected PropertyChangeListener encodingChangeListener;
28 protected ObjectBinding defaultEncodingBinding;
29 protected ObjectBinding otherEncodingBinding;
30 protected ObjectBinding selectedEncodingBinding;
31
32 protected EncodingSelectorView view;
33 protected String systemEncoding;
34 protected String encoding;
35 protected boolean defaultEncoding;
36
37
40 public EncodingSelector(CayenneController parent) {
41 this(parent, new EncodingSelectorView());
42 }
43
44 public EncodingSelector(CayenneController parent, EncodingSelectorView view) {
45 super(parent);
46 this.view = view;
47
48 initBindings();
49 }
50
51 public Component getView() {
52 return view;
53 }
54
55 protected void initBindings() {
56 this.systemEncoding = detectPlatformEncoding();
58
59 Vector allEncodings = supportedEncodings(systemEncoding);
60 view.getEncodingChoices().setModel(new DefaultComboBoxModel (allEncodings));
61 view.getDefaultEncodingLabel().setText("Default (" + systemEncoding + ")");
62 view.getDefaultEncoding().setSelected(true);
63
64 BindingBuilder builder = new BindingBuilder(
66 getApplication().getBindingFactory(),
67 this);
68
69 this.defaultEncodingBinding = builder
70 .bindToStateChange(view.getDefaultEncoding(), "defaultEncoding");
71
72 this.otherEncodingBinding = builder.bindToStateChange(view.getOtherEncoding(),
73 "otherEncoding");
74
75 this.selectedEncodingBinding = builder.bindToComboSelection(view
76 .getEncodingChoices(), "encoding");
77 }
78
79
82 protected String detectPlatformEncoding() {
83 return new OutputStreamWriter (new ByteArrayOutputStream ()).getEncoding();
85 }
86
87
92 protected Vector supportedEncodings(String platformEncoding) {
93 String [] defaultCharsets = new String [] {
94 "US-ASCII", "ISO-8859-1", "UTF-8", "UTF-16BE", "UTF-16LE", "UTF-16"
95 };
96
97 Vector charsets = new Vector (Arrays.asList(defaultCharsets));
98 if (!charsets.contains(platformEncoding)) {
99 charsets.add(platformEncoding);
100 }
101
102 Collections.sort(charsets);
103 return charsets;
104 }
105
106 public void bindingUpdated(String expression, Object newValue) {
107 if (ENCODING_PROPERTY_BINDING.equals(expression)) {
108 this.encoding = (newValue != null) ? newValue.toString() : null;
109 this.defaultEncoding = encoding == null || encoding.equals(systemEncoding);
110
111 selectedEncodingBinding.updateView();
112 if (defaultEncoding) {
113 defaultEncodingBinding.updateView();
114 view.getEncodingChoices().setEnabled(false);
115 view.getDefaultEncodingLabel().setEnabled(true);
116 }
117 else {
118 otherEncodingBinding.updateView();
119 view.getEncodingChoices().setEnabled(true);
120 view.getDefaultEncodingLabel().setEnabled(false);
121 }
122 }
123 }
124
125
129 public void setEncoding(String encoding) {
130 if (!Util.nullSafeEquals(this.encoding, encoding)) {
131 Object old = this.encoding;
132
133 this.encoding = encoding;
134 firePropertyChange("encoding", old, encoding);
135 }
136 }
137
138 public String getEncoding() {
139 return encoding;
140 }
141
142 public boolean isDefaultEncoding() {
143 return defaultEncoding;
144 }
145
146 public void setDefaultEncoding(boolean b) {
147 if (b != defaultEncoding) {
148 this.defaultEncoding = b;
149
150 if (b) {
151 setEncoding(systemEncoding);
152 view.getEncodingChoices().setEnabled(false);
153 view.getDefaultEncodingLabel().setEnabled(true);
154 }
155 else {
156 view.getEncodingChoices().setEnabled(true);
157 view.getDefaultEncodingLabel().setEnabled(false);
158 }
159
160 }
161 }
162
163 public boolean isOtherEncoding() {
164 return !isDefaultEncoding();
165 }
166
167 public void setOtherEncoding(boolean b) {
168 setDefaultEncoding(!b);
169 }
170 } |
Popular Tags |
Java API By Example, From Geeks To Geeks.