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1
19
20 package org.netbeans.modules.j2ee.deployment.config;
21
22 import java.io.File  ;
23 import java.util.HashMap ;
24 import java.util.Iterator ;
25 import org.netbeans.modules.j2ee.deployment.devmodules.spi.J2eeModuleProvider;
26 import org.openide.filesystems.FileAttributeEvent;
27 import org.openide.filesystems.FileChangeListener;
28 import org.openide.filesystems.FileEvent;
29 import org.openide.filesystems.FileObject;
30 import org.openide.filesystems.FileRenameEvent;
31 import org.openide.filesystems.FileUtil;
32
33
39 public abstract class AbstractFilesListener {
40 protected J2eeModuleProvider provider;
41 private HashMap fileListeners = new HashMap ();
42
43 private FileChangeListener listener = new FileListener();
44
45
46 public AbstractFilesListener(J2eeModuleProvider provider) {
47 this.provider = provider;
48 startListening();
49 }
50
51 protected abstract File [] getTargetFiles();
52 protected abstract boolean isTarget(FileObject fo);
53 protected abstract boolean isTarget(String fileName);
54 protected abstract void targetCreated(FileObject fo);
55 protected abstract void targetDeleted(FileObject fo);
56 protected abstract void targetChanged(FileObject fo);
57
58 private synchronized void startListening() {
59 File [] targets = getTargetFiles();
60 for (int i=0; i<targets.length; i++) {
61 startListening(targets[i]);
62 }
63 }
64 public synchronized void stopListening() {
65 for (Iterator i = fileListeners.keySet().iterator(); i.hasNext();) {
66 FileObject fo = (FileObject) i.next();
67 removeFileListenerFrom(fo);
68 }
69 }
70 private void startListening(File target) {
71 if (!target.isAbsolute()) {
72 return;
75 }
76 FileObject targetFO = FileUtil.toFileObject(target);
77 while (targetFO == null) {
78 target = target.getParentFile();
79 if (target == null)
80 return;
81 targetFO = FileUtil.toFileObject(target);
82 }
83 if (!fileListeners.containsKey(targetFO)) {
84 addFileListenerTo(targetFO);
85 }
86 }
87
88 private void addFileListenerTo(FileObject fo) {
89 FileChangeListener l = FileUtil.weakFileChangeListener(listener, fo);
90 fileListeners.put(fo, l);
91 fo.addFileChangeListener(l);
92
93 }
94
95 private void removeFileListenerFrom(FileObject fo) {
96 FileChangeListener l = (FileChangeListener)fileListeners.remove(fo);
97 if (l != null) {
98 fo.removeFileChangeListener(l);
99 }
100 }
101
102 private final class FileListener implements FileChangeListener {
103
104 public void fileFolderCreated(FileEvent e) {
105 startListening();
106 }
107 public void fileDeleted(FileEvent e) {
108 FileObject fo = e.getFile();
109 if (isTarget(fo)) {
110 synchronized(fileListeners) {
111 removeFileListenerFrom(fo);
112 }
113 targetDeleted(fo);
114 }
115 startListening();
116 }
117 public void fileDataCreated(FileEvent e) {
118 FileObject fo = e.getFile();
119 if (isTarget(fo)) {
120 synchronized(fileListeners) {
121 addFileListenerTo(fo);
122 }
123 targetCreated(fo);
124 }
125 }
126 public void fileRenamed(FileRenameEvent e) {
127 FileObject fo = e.getFile();
128 if (isTarget(fo)) {
129 synchronized(fileListeners) {
130 if (!fileListeners.containsKey(fo)) {
131 addFileListenerTo(fo);
132 }
133 }
134 targetCreated(fo);
135 } else {
136 if (isTarget(e.getName() + "." + e.getExt())) {
137 synchronized(fileListeners) {
138 removeFileListenerFrom(fo);
139 }
140 targetDeleted(fo);
141 }
142 }
143 startListening();
144 }
145
146 public void fileAttributeChanged(FileAttributeEvent e) {};
147
148 public void fileChanged(FileEvent e) {
149 FileObject fo = e.getFile();
150 if (isTarget(fo)) {
151 fo.refresh(true);
152 targetChanged(fo);
153 }
154 }
155 }
156 }
157 |
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