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/*
* MultiFileLoaderHid.java
*
* Created on September 12, 2001, 7:35 PM
*/
package org.openide.loaders;
import org.openide.filesystems.*;
import java.io.*;
/**
*
* @author Vitezslav Stejskal
*/
public class MultiFileLoaderHid extends MultiFileLoader {
private static final String PRIMARY_EXT = "primary";
private static final String SECONDARY_EXT = "secondary";
/** Creates new MultiFileLoaderHid */
public MultiFileLoaderHid () {
super ("org.openide.loaders.DataObject");
}
/** For a given file finds the primary file.
* @param fo the (secondary) file
*
* @return the primary file for the file or <code>null</code> if the file is not
* recognized by this loader
*/
protected FileObject findPrimaryFile (FileObject fo) {
if (PRIMARY_EXT.equals (fo.getExt ())) {
return fo;
}
if (SECONDARY_EXT.equals (fo.getExt ())) {
return FileUtil.findBrother (fo, PRIMARY_EXT);
}
return null;
}
/** Creates a new secondary entry for a given file.
* Note that separate entries must be created for every secondary
* file within a given multi-file data object.
*
* @param obj requesting object
* @param secondaryFile a secondary file
* @return the entry
*/
protected MultiDataObject.Entry createSecondaryEntry (MultiDataObject obj, FileObject secondaryFile) {
return new FileEntry (obj, secondaryFile);
}
/** Creates the right primary entry for a given primary file.
*
* @param obj requesting object
* @param primaryFile primary file recognized by this loader
* @return primary entry for that file
*/
protected MultiDataObject.Entry createPrimaryEntry (MultiDataObject obj, FileObject primaryFile) {
return new FileEntry (obj, primaryFile);
}
/** Creates the right data object for a given primary file.
* It is guaranteed that the provided file will actually be the primary file
* returned by {@link #findPrimaryFile}.
*
* @param primaryFile the primary file
* @return the data object for this file
* @exception DataObjectExistsException if the primary file already has a data object
*/
protected MultiDataObject createMultiObject (FileObject primaryFile) throws DataObjectExistsException, IOException {
return new MDO (primaryFile, this);
}
private static class MDO extends MultiDataObject {
public MDO (FileObject primaryFile, MultiFileLoader loader) throws DataObjectExistsException {
super (primaryFile, loader);
}
}
}
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