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*/ |
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*/ |
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package org.netbeans.modules.openide.loaders; |
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package org.netbeans.modules.openide.loaders; |
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import java.util.Map; |
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import java.util.WeakHashMap; |
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import org.openide.filesystems.FileObject; |
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import org.openide.filesystems.FileStateInvalidException; |
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import org.openide.filesystems.FileSystem; |
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import org.openide.util.RequestProcessor; |
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import org.openide.util.RequestProcessor; |
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/** Currently allows to share RP for nodes used by different packages |
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/** Currently allows to share RP for nodes used by different packages |
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*/ |
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*/ |
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public final class DataNodeUtils { |
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public final class DataNodeUtils { |
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private static final RequestProcessor RP = new RequestProcessor("Data System Nodes"); // NOI18N |
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private static final RequestProcessor RP = new RequestProcessor("Data System Nodes"); // NOI18N |
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private static final Map<FileSystem, RequestProcessor> FS_2_RP |
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= new WeakHashMap<FileSystem, RequestProcessor>(); |
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private DataNodeUtils() { |
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private DataNodeUtils() { |
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} |
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} |
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public static RequestProcessor reqProcessor() { |
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public static RequestProcessor reqProcessor() { |
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return RP; |
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return RP; |
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} |
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} |
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/** |
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* Get request processor for a file. |
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* @param fo Some FileObject. |
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* @return Request Processor (newly) assigned to the file's filesystem. |
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*/ |
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public static RequestProcessor reqProcessor(FileObject fo) { |
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if (fo == null) { |
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return RP; |
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} |
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FileSystem fs; |
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try { |
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fs = fo.getFileSystem(); |
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synchronized (FS_2_RP) { |
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RequestProcessor rp = FS_2_RP.get(fs); |
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if (rp == null) { |
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rp = new RequestProcessor("Data System Nodes for " //NOI18N |
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+ fs.getDisplayName()); |
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FS_2_RP.put(fs, rp); |
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} |
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return rp; |
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} |
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} catch (FileStateInvalidException ex) { |
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return RP; |
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} |
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} |
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} |
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} |