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 * accompanied this code).
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package java.awt.datatransfer;

import java.io.*;



A Transferable which implements the capability required
to transfer a String.
This Transferable properly supports
DataFlavor.stringFlavor
and all equivalent flavors. Support for
DataFlavor.plainTextFlavor
and all equivalent flavors is deprecated. No other
DataFlavors are supported.

See Also:
/**
 * A <code>Transferable</code> which implements the capability required
 * to transfer a <code>String</code>.
 *
 * This <code>Transferable</code> properly supports
 * <code>DataFlavor.stringFlavor</code>
 * and all equivalent flavors. Support for
 * <code>DataFlavor.plainTextFlavor</code>
 * and all equivalent flavors is <b>deprecated</b>. No other
 * <code>DataFlavor</code>s are supported.
 *
 * @see java.awt.datatransfer.DataFlavor#stringFlavor
 * @see java.awt.datatransfer.DataFlavor#plainTextFlavor
 */
public class StringSelection implements Transferable, ClipboardOwner {

    private static final int STRING = 0;
    private static final int PLAIN_TEXT = 1;

    private static final DataFlavor[] flavors = {
        DataFlavor.stringFlavor,
        DataFlavor.plainTextFlavor // deprecated
    };

    private String data;

    
Creates a Transferable capable of transferring
the specified String.

/**
     * Creates a <code>Transferable</code> capable of transferring
     * the specified <code>String</code>.
     */
    public StringSelection(String data) {
        this.data = data;
    }

    
Returns an array of flavors in which this Transferable
can provide the data. DataFlavor.stringFlavor
is properly supported.
Support for DataFlavor.plainTextFlavor is
deprecated.

Returns:an array of length two, whose elements are DataFlavor.
        stringFlavor and DataFlavor.plainTextFlavor
/**
     * Returns an array of flavors in which this <code>Transferable</code>
     * can provide the data. <code>DataFlavor.stringFlavor</code>
     * is properly supported.
     * Support for <code>DataFlavor.plainTextFlavor</code> is
     * <b>deprecated</b>.
     *
     * @return an array of length two, whose elements are <code>DataFlavor.
     *         stringFlavor</code> and <code>DataFlavor.plainTextFlavor</code>
     */
    public DataFlavor[] getTransferDataFlavors() {
        // returning flavors itself would allow client code to modify
        // our internal behavior
        return (DataFlavor[])flavors.clone();
    }

    
Returns whether the requested flavor is supported by this
Transferable.

Params:
  • flavor – the requested flavor for the data
Throws:
Returns:true if flavor is equal to
  DataFlavor.stringFlavor or
  DataFlavor.plainTextFlavor; false if flavor
  is not one of the above flavors
/**
     * Returns whether the requested flavor is supported by this
     * <code>Transferable</code>.
     *
     * @param flavor the requested flavor for the data
     * @return true if <code>flavor</code> is equal to
     *   <code>DataFlavor.stringFlavor</code> or
     *   <code>DataFlavor.plainTextFlavor</code>; false if <code>flavor</code>
     *   is not one of the above flavors
     * @throws NullPointerException if flavor is <code>null</code>
     */
    public boolean isDataFlavorSupported(DataFlavor flavor) {
        // JCK Test StringSelection0003: if 'flavor' is null, throw NPE
        for (int i = 0; i < flavors.length; i++) {
            if (flavor.equals(flavors[i])) {
                return true;
            }
        }
        return false;
    }

    
Returns the Transferable's data in the requested
DataFlavor if possible. If the desired flavor is
DataFlavor.stringFlavor, or an equivalent flavor,
the String representing the selection is
returned. If the desired flavor is
DataFlavor.plainTextFlavor,
or an equivalent flavor, a Reader is returned.
Note: The behavior of this method for
DataFlavor.plainTextFlavor
and equivalent DataFlavors is inconsistent with the
definition of DataFlavor.plainTextFlavor.

Params:
  • flavor – the requested flavor for the data
Throws:
  • UnsupportedFlavorException – if the requested data flavor is
        not equivalent to either DataFlavor.stringFlavor
        or DataFlavor.plainTextFlavor
  • IOException – if an IOException occurs while retrieving the data.
        By default, StringSelection never throws this exception, but a
        subclass may.
  • NullPointerException – if flavor is null
See Also:
Returns:the data in the requested flavor, as outlined above
/**
     * Returns the <code>Transferable</code>'s data in the requested
     * <code>DataFlavor</code> if possible. If the desired flavor is
     * <code>DataFlavor.stringFlavor</code>, or an equivalent flavor,
     * the <code>String</code> representing the selection is
     * returned. If the desired flavor is
     * <code>DataFlavor.plainTextFlavor</code>,
     * or an equivalent flavor, a <code>Reader</code> is returned.
     * <b>Note:</b> The behavior of this method for
     * <code>DataFlavor.plainTextFlavor</code>
     * and equivalent <code>DataFlavor</code>s is inconsistent with the
     * definition of <code>DataFlavor.plainTextFlavor</code>.
     *
     * @param flavor the requested flavor for the data
     * @return the data in the requested flavor, as outlined above
     * @throws UnsupportedFlavorException if the requested data flavor is
     *         not equivalent to either <code>DataFlavor.stringFlavor</code>
     *         or <code>DataFlavor.plainTextFlavor</code>
     * @throws IOException if an IOException occurs while retrieving the data.
     *         By default, StringSelection never throws this exception, but a
     *         subclass may.
     * @throws NullPointerException if flavor is <code>null</code>
     * @see java.io.Reader
     */
    public Object getTransferData(DataFlavor flavor)
        throws UnsupportedFlavorException, IOException
    {
        // JCK Test StringSelection0007: if 'flavor' is null, throw NPE
        if (flavor.equals(flavors[STRING])) {
            return (Object)data;
        } else if (flavor.equals(flavors[PLAIN_TEXT])) {
            return new StringReader(data == null ? "" : data);
        } else {
            throw new UnsupportedFlavorException(flavor);
        }
    }

    public void lostOwnership(Clipboard clipboard, Transferable contents) {
    }
}