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1
19
20 package org.netbeans.modules.masterfs;
21
22 import org.openide.filesystems.FileSystem;
23 import org.openide.util.Lookup;
24 import org.openide.util.LookupListener;
25 import org.openide.util.LookupEvent;
26 import org.netbeans.modules.masterfs.providers.AutoMountProvider;
27 import org.netbeans.modules.masterfs.providers.FileSystemProvider;
28
29 import java.io.IOException  ;
30 import java.beans.PropertyVetoException ;
31 import java.util.*;
32 import java.awt.*;
33
34 public class ProviderCall {
35 static private Map providerMap;
36 static private Lookup.Result preventsLookupResultFromGC;
37
38 static void init () {
39 getProviderMap();
40 }
41
42 static FileSystem createFileSystem(String resName) {
43 FileSystem retVal = null;
44
45 AutoMountProvider ap = getMountAble(resName);
46
47 if (ap != null) {
48 try {
49 retVal = ap.createFileSystem(resName);
50 } catch (IOException e) {
51 e.printStackTrace();
52 return null;
53 } catch (PropertyVetoException e) {
54 e.printStackTrace();
55 return null;
56 }
57 }
58
59 return retVal;
60 }
61
62
63 static boolean isMountAble(String resName) {
64 return getMountAble(resName) == null ? false : true;
65 }
66
67 static Image getIcon(String resName, int iconType) {
68 Image icon = null;
69 AutoMountProvider aProvider = ProviderCall.getMountAble(resName);
70 if (aProvider != null) {
71 icon = aProvider.getIcon(resName, iconType);
72 }
73 return icon;
74 }
75
76
77 private static AutoMountProvider getMountAble(String resName) {
78 Map providerMapCopy;
79 synchronized (getProviderMap()) {
80 providerMapCopy = new HashMap(getProviderMap());
81 }
82
83 Iterator it = providerMapCopy.values().iterator();
84 while (it.hasNext()) {
85 AutoMountProvider aProvider = (AutoMountProvider) it.next();
86 if (aProvider == null) continue;
87 boolean retVal = aProvider.isRootOfFileSystem(resName);
88 if (retVal) return aProvider;
89 }
90
91 return null;
92 }
93
94
96 static private Map getProviderMap() {
97 synchronized (MasterFileSystem.class) {
98 if (providerMap == null) {
99 providerMap = Collections.synchronizedMap(new HashMap());
100 final Lookup.Result providerResult =
101 Lookup.getDefault().lookup(new Lookup.Template(FileSystemProvider.class));
102 preventsLookupResultFromGC = providerResult;
103 initFileSystemProviders(providerResult);
104 providerResult.addLookupListener(new LookupListener() {
105 public void resultChanged(LookupEvent ev) {
106 initFileSystemProviders(providerResult);
107 }
108 });
109 }
110 }
111 return providerMap;
112 }
113
114 static private void initFileSystemProviders(Lookup.Result result) {
115 Set newProviders = new HashSet(result.allInstances());
116
117 Map upToDateMap = new HashMap(newProviders.size());
118 Iterator it = newProviders.iterator();
119 while (it.hasNext()) {
120 FileSystemProvider provider = (FileSystemProvider) it.next();
121 AutoMountProvider aProvider = (AutoMountProvider) getProviderMap().get(provider);
122 if (aProvider == null) {
123 if (!getProviderMap().keySet().contains(provider)) {
124 aProvider = provider.initialize(MountTable.getDefault().mountSupport);
125 }
126 }
127 upToDateMap.put(provider, aProvider);
128 }
129 getProviderMap().clear();
130 getProviderMap().putAll(upToDateMap);
131 }
132
133 }
134 |
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