Bug 3555 source for binaries - 'defaults' button does not work (1G840M4)
AK (1/25/01 2:43:33 PM) 1. create a java project 2. open the properties page for rt.jar in the project 3. clear the 'Sources JAR file' field 4. press 'Defaults' nothing happens NOTES: EG (2/1/01 10:02:53 AM) wait until we finish the Library presentation issue.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/SourceAttachmentBlock.java
return null;
	}	
	
		
	private IStatus updatePrefixStatus() {
		StatusInfo status= new StatusInfo();
		
		String prefix= fPrefixField.getText();
		if (prefix.length() == 0) {
			
			return status;
		} else {
			if (!Path.EMPTY.isValidPath(prefix)) {
				status.setError(NewWizardMessages.getString("SourceAttachmentBlock.prefix.error.notvalid")); 
				return status;
			}
			IPath path= new Path(prefix);
			if (fIsVariableEntry) {
				IPath resolvedPath= getResolvedPath(path);
				if (resolvedPath == null) {
					status.setError(NewWizardMessages.getString("SourceAttachmentBlock.prefix.error.varnotexists")); 
					return status;
				}
				if (resolvedPath.getDevice() != null) {
					status.setError(NewWizardMessages.getString("SourceAttachmentBlock.prefix.error.deviceinvar")); 
					return status;
				}
			} else {
				if (path.getDevice() != null) {
					status.setError(NewWizardMessages.getString("SourceAttachmentBlock.prefix.error.deviceinpath"));