TextTransfer.java

/*
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package vizzy.util;

/**
 *
 * @author sergeil
 */
import java.awt.datatransfer.Clipboard;
import java.awt.datatransfer.ClipboardOwner;
import java.awt.datatransfer.Transferable;
import java.awt.datatransfer.StringSelection;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.UnsupportedFlavorException;
import java.awt.Toolkit;
import java.io.*;

public final class TextTransfer implements ClipboardOwner {

    /**
     * Empty implementation of the ClipboardOwner interface.
     */
    public void lostOwnership(Clipboard aClipboard, Transferable aContents) {
        //do nothing
    }

    /**
     * Place a String on the clipboard, and make this class the
     * owner of the Clipboard's contents.
     */
    public void setClipboardContents(String aString) {
        StringSelection stringSelection = new StringSelection(aString);
        Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
        clipboard.setContents(stringSelection, this);
    }

    /**
     * Get the String residing on the clipboard.
     *
     * @return any text found on the Clipboard; if none found, return an
     * empty String.
     */
    public String getClipboardContents() {
        String result = "";
        Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
        //odd: the Object param of getContents is not currently used
        Transferable contents = clipboard.getContents(null);
        boolean hasTransferableText =
                (contents != null) &&
                contents.isDataFlavorSupported(DataFlavor.stringFlavor);
        if (hasTransferableText) {
            try {
                result = (String) contents.getTransferData(DataFlavor.stringFlavor);
            } catch (UnsupportedFlavorException ex) {
                //highly unlikely since we are using a standard DataFlavor
//                System.out.println(ex);
//                ex.printStackTrace();
            } catch (IOException ex) {
//                System.out.println(ex);
//                ex.printStackTrace();
            }
        }
        return result;
    }
}