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19 package org.netbeans.modules.java.platform.queries;
20
21 import java.beans.PropertyChangeEvent  ;
22 import java.beans.PropertyChangeListener ;
23 import java.net.URL ;
24 import java.net.MalformedURLException ;
25 import java.util.Map ;
26 import java.util.HashMap ;
27 import java.util.Iterator ;
28 import java.util.ArrayList ;
29 import javax.swing.event.ChangeEvent ;
30 import javax.swing.event.ChangeListener ;
31 import org.openide.filesystems.FileObject;
32 import org.openide.filesystems.FileUtil;
33 import org.openide.filesystems.URLMapper;
34 import org.netbeans.spi.java.queries.SourceForBinaryQueryImplementation;
35 import org.netbeans.api.java.classpath.ClassPath;
36 import org.netbeans.api.java.platform.JavaPlatformManager;
37 import org.netbeans.api.java.platform.JavaPlatform;
38 import org.netbeans.api.java.queries.SourceForBinaryQuery;
39 import org.openide.util.Exceptions;
40 import org.openide.util.WeakListeners;
41
42
43
47
48 public class PlatformSourceForBinaryQuery implements SourceForBinaryQueryImplementation {
49
50 private static final String JAR_FILE = "jar:file:"; private static final String RTJAR_PATH = "/jre/lib/rt.jar!/"; private static final String SRC_ZIP = "/src.zip";
54 private Map cache = new HashMap ();
55
56 public PlatformSourceForBinaryQuery () {
57 }
58
59
64 public SourceForBinaryQuery.Result findSourceRoots(URL binaryRoot) {
65 SourceForBinaryQuery.Result res = (SourceForBinaryQuery.Result) this.cache.get (binaryRoot);
66 if (res != null) {
67 return res;
68 }
69 JavaPlatformManager mgr = JavaPlatformManager.getDefault();
70 JavaPlatform[] platforms = mgr.getInstalledPlatforms();
71 for (int i=0; i< platforms.length; i++) {
72 ClassPath cp = platforms[i].getBootstrapLibraries();
73 for (Iterator it = cp.entries().iterator(); it.hasNext();) {
74 ClassPath.Entry entry = (ClassPath.Entry) it.next();
75 if (entry.getURL().equals (binaryRoot)) {
76 res = new Result (platforms[i]);
77 this.cache.put (binaryRoot, res);
78 return res;
79 }
80 }
81 }
82 String binaryRootS = binaryRoot.toExternalForm();
83 if (binaryRootS.startsWith(JAR_FILE)) {
84 if (binaryRootS.endsWith(RTJAR_PATH)) {
85 String srcZipS = binaryRootS.substring(4,binaryRootS.length() - RTJAR_PATH.length()) + SRC_ZIP;
87 try {
88 URL srcZip = FileUtil.getArchiveRoot(new URL (srcZipS));
89 FileObject fo = URLMapper.findFileObject(srcZip);
90 if (fo != null) {
91 return new UnregisteredPlatformResult (fo);
92 }
93 } catch (MalformedURLException mue) {
94 Exceptions.printStackTrace(mue);
95 }
96 }
97 }
98 return null;
99 }
100
101 private static class Result implements SourceForBinaryQuery.Result, PropertyChangeListener {
102
103 private JavaPlatform platform;
104 private ArrayList listeners;
105
106 public Result (JavaPlatform platform) {
107 this.platform = platform;
108 this.platform.addPropertyChangeListener ((PropertyChangeListener )WeakListeners.create(PropertyChangeListener .class,this,this.platform));
109 }
110
111 public FileObject[] getRoots () { ClassPath sources = this.platform.getSourceFolders();
113 return sources.getRoots();
114 }
115
116 public synchronized void addChangeListener (ChangeListener l) {
117 assert l != null : "Listener can not be null"; if (this.listeners == null) {
119 this.listeners = new ArrayList ();
120 }
121 this.listeners.add (l);
122 }
123
124 public synchronized void removeChangeListener (ChangeListener l) {
125 assert l != null : "Listener can not be null"; if (this.listeners == null) {
127 return;
128 }
129 this.listeners.remove (l);
130 }
131
132 public void propertyChange (PropertyChangeEvent event) {
133 if (JavaPlatform.PROP_SOURCE_FOLDER.equals(event.getPropertyName())) {
134 this.fireChange ();
135 }
136 }
137
138 private void fireChange () {
139 Iterator it = null;
140 synchronized (this) {
141 if (this.listeners == null) {
142 return;
143 }
144 it = ((ArrayList )this.listeners.clone()).iterator ();
145 }
146 ChangeEvent event = new ChangeEvent (this);
147 while (it.hasNext()) {
148 ((ChangeListener )it.next()).stateChanged(event);
149 }
150 }
151 }
152
153 private static class UnregisteredPlatformResult implements SourceForBinaryQuery.Result {
154
155 private FileObject srcRoot;
156
157 private UnregisteredPlatformResult (FileObject fo) {
158 assert fo != null;
159 srcRoot = fo;
160 }
161
162 public FileObject[] getRoots() {
163 return srcRoot.isValid() ? new FileObject[] {srcRoot} : new FileObject[0];
164 }
165
166 public void addChangeListener(ChangeListener l) {
167 }
169
170 public void removeChangeListener(ChangeListener l) {
171 }
173 }}
174
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