DMDirc-Plugins/src/com/dmdirc/addons/ui_swing/actions/PasteAction.java

/*
 * Copyright (c) 2006-2014 DMDirc Developers
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

package com.dmdirc.addons.ui_swing.actions;

import java.awt.Toolkit;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.Transferable;
import java.awt.event.ActionEvent;

import javax.swing.AbstractAction;
import javax.swing.text.JTextComponent;

/**
 * Paste action.
 */
public final class PasteAction extends AbstractAction {

    /**
     * A version number for this class. It should be changed whenever the class structure is changed
     * (or anything else that would prevent serialized objects being unserialized with the new
     * class).
     */
    private static final long serialVersionUID = 1;
    /** Text component to be acted upon. */
    private final JTextComponent comp;

    /**
     * Instantiates a new paste action.
     *
     * @param comp Component to be acted upon
     */
    public PasteAction(final JTextComponent comp) {
        super("Paste");

        this.comp = comp;
    }

    /**
     * {@inheritDoc}
     *
     * @param e Action event
     */
    @Override
    public void actionPerformed(final ActionEvent e) {
        comp.paste();
    }

    /** {@inheritDoc} */
    @Override
    public boolean isEnabled() {
        if (comp.isEditable() && comp.isEnabled()) {
            final Transferable contents = Toolkit.getDefaultToolkit().
                    getSystemClipboard().getContents(this);
            return contents.isDataFlavorSupported(DataFlavor.stringFlavor);
        } else {
            return false;
        }
    }

}