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1
11 package org.eclipse.osgi.framework.util;
12
13 import java.io.IOException  ;
14 import java.io.InputStream ;
15 import java.net.URL ;
16 import java.util.*;
17 import java.util.ArrayList ;
18 import java.util.Locale ;
19 import org.eclipse.osgi.framework.msg.MessageFormat;
20 import org.eclipse.osgi.service.systembundle.EntryLocator;
21 import org.osgi.framework.*;
22
23 public class FrameworkMessageFormat extends MessageFormat {
24 static private BundleContext context;
25 static private ArrayList msgList = new ArrayList ();
26 static private ServiceListener listener = null;
27 static private EntryLocator systemEntryLocator = null;
28
29 private Class clazz;
30 private String bundleName;
31
32 private FrameworkMessageFormat(String bundleName, Locale locale, Class clazz) {
33 super(bundleName, locale, clazz);
34 this.bundleName = bundleName;
35 this.clazz = clazz;
36 }
37
38 protected void init(final String bundleName, final Locale locale, final Class clazz) {
39 if (systemEntryLocator == null) {
40 super.init(bundleName, locale, clazz);
41 return;
42 }
43
44 URL resourceURL = systemEntryLocator.getProperties(bundleName, locale);
45 if (resourceURL != null) {
46 InputStream resourceStream = null;
47 try {
48 resourceStream = resourceURL.openStream();
49 bundle = new PropertyResourceBundle(resourceStream);
50 this.locale = locale;
51 return;
52 } catch (IOException e) {
53 } finally {
55 if (resourceStream != null) {
56 try {
57 resourceStream.close();
58 } catch (IOException e) {
59 }
61 }
62 }
63 }
64 super.init(bundleName, locale, clazz);
66 }
67
68 private void init() {
69 init(bundleName, locale, clazz);
70 }
71
72 static public synchronized void setContext(BundleContext context) {
73 if (context == null) {
74 if (FrameworkMessageFormat.context != null && listener != null)
75 FrameworkMessageFormat.context.removeServiceListener(listener);
76 FrameworkMessageFormat.context = null;
77 } else if (FrameworkMessageFormat.context == null) {
78 FrameworkMessageFormat.context = context;
79 listener = new ResourceFinderListener();
80 try {
81 FrameworkMessageFormat.context.addServiceListener(listener, "(objectclass=org.eclipse.osgi.service.systembundle.EntryLocator)"); } catch (InvalidSyntaxException e) {
83 }
85 }
86
87 }
88
89 static public synchronized MessageFormat getMessageFormat(String bundleName) {
90 FrameworkMessageFormat msgFormat = new FrameworkMessageFormat(bundleName, Locale.getDefault(), FrameworkMessageFormat.class);
91 msgList.add(msgFormat);
92 return msgFormat;
93 }
94
95 static private synchronized void initMessages() {
96 int size = msgList.size();
97 for (int i = 0; i < size; i++) {
98 ((FrameworkMessageFormat) msgList.get(i)).init();
99 }
100 }
101
102 static private class ResourceFinderListener implements ServiceListener {
103 private ServiceReference resourceFinderRef = null;
104
105 public void serviceChanged(ServiceEvent event) {
106 synchronized (FrameworkMessageFormat.class) {
107 int eventType = event.getType();
108 ServiceReference sr = event.getServiceReference();
109 switch (eventType) {
110 case ServiceEvent.REGISTERED :
111 if (systemEntryLocator == null) {
112 resourceFinderRef = sr;
113 systemEntryLocator = (EntryLocator) context.getService(sr);
114 initMessages();
115 }
116 break;
117 case ServiceEvent.UNREGISTERING :
118 if (sr.equals(resourceFinderRef)) {
119 systemEntryLocator = null;
120 initMessages();
121 context.ungetService(resourceFinderRef);
122 resourceFinderRef = null;
123 }
124 break;
125 }
126 }
127 }
128 }
129
130 } |
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