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 * 
 * IBM SDK, Java(tm) Technology Edition, v8
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 *===========================================================================
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 * Copyright (c) 2006, 2017, Oracle and/or its affiliates. All rights reserved.
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import javax.jnlp.ClipboardService;
import javax.jnlp.ServiceManager;
import javax.jnlp.UnavailableServiceException;
import java.awt.datatransfer.Transferable;
import java.awt.datatransfer.StringSelection;
import java.awt.datatransfer.DataFlavor;
import java.io.IOException;

/**
 */
public class ClipboardHandler {
    static private boolean _initialized = false;
    static private ClipboardService _cs = null;
    static private String _content = "";

    public static void toClipboard(String txt) {
        System.out.println("toClipboard: " + txt);
        initialize();
        if (_cs != null) {
            _cs.setContents(new StringSelection(txt));
        } else {
            _content = txt;
        }
    }

    public static String fromClipboard() {
        System.out.println("fromClipboard: ");
        initialize();
        if (_cs != null) {
            Transferable t = _cs.getContents();
            try {
                return (String)t.getTransferData(DataFlavor.stringFlavor);
            } catch(Throwable ex) {
                System.out.println(ex);
                return "";
            }
        } else {
            return _content;
        }
    }

    static private synchronized void initialize() {
        if (_initialized) return;
        _initialized = true;
        try {
            _cs = (ClipboardService)ServiceManager.lookup("javax.jnlp.ClipboardService");
        } catch(UnavailableServiceException e) {
            _cs = null;
        }
    }
}
