// ---------------------- CutNPastePopup.java --------------------------

// package com.woven_media.gui.menu;
/***********************************************************************
Copyright (C) 2008, Brent Allen Parrish <info@woven-media.com>

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
************************************************************************/

// awt.datatransfer
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.Transferable;
import java.awt.datatransfer.StringSelection;
import java.awt.datatransfer.UnsupportedFlavorException;
//io
import java.io.IOException;
// swingx
import javax.swing.JFrame;
import javax.swing.JTextField;
import javax.swing.JMenuItem;

/**
 * CutNPastePopup class provides a popup menu which implements cut, copy and paste
 * commands by extending <code>com.woven_media.gui.menu.AbstractPopup</code>
 * class.
 *
 * @author  Brent Allen Parrish
 * @version %I%, %G%
 * @since   1.0
 */
public class CutNPastePopup extends AbstractPopup
{
    private JFrame host;
    private JTextField textComponent;

    /**
     * Class constructor sets the <code>parent</code> member
     * with reference to this instance's <code>parent
     * java.awt.Component</code> and a <code>component reference</code>
     * to a javax.swing.JTextField component.
     *
     * @param host <code>java.awt.Component</code> reference
     *             to the parent component.
     * @since 1.0
     */
    public CutNPastePopup(JFrame host, JTextField component)
    {
        super(host, component);
        this.host = host;
        textComponent = component;
    }

    /**
     * Clears text and transfers data to the system clipboard.
     *
     * @since 1.0
     */
    protected void cut()
    {
        if(textComponent.getSelectedText() != null)
        {
            copy();
            textComponent.setText("");
        }
    }

    /**
     * Copies selected text to the system clipboard.
     *
     * @see   java.awt.datatransfer.Clipboard
     * @see   java.awt.datatransfer.StringSelection
     * @since 1.0
     */
    protected void copy()
    {
        String data = textComponent.getSelectedText();
        if(data != null)
        {
            StringSelection ss = new StringSelection(data);
            clipboard.setContents(ss, ss);
        }
        else
        {
            return;
        }
    }

    /**
     * Transfers data from the system clipboard to this instance's
     * member <code>component</code>.
     *
     * @see   java.awt.datatransfer.Transferable
     * @see   java.awt.datatransfer.UnsupportedFlavorException
     * @see   java.io.IOException
     * @since 1.0
     */
    protected void paste()
    {
        Transferable t = clipboard.getContents(textComponent);
        if(t == null)
        {
            return; // do nothing
        }
        try
        {
            String s = (String)t.getTransferData(DataFlavor.stringFlavor);
            textComponent.setText(s);
        }
        catch(UnsupportedFlavorException ufe)
        {
            return;
        }
        catch(IOException ioe)
        {
            return;
        }
    }

} // End class