resultlist.java

编辑视频文件

/*
 * File:     ResultList.java
 * Project:  MPI Linguistic Application
 * Date:     02 May 2007
 *
 * Copyright (C) 2001-2007  Max Planck Institute for Psycholinguistics
 *
 * 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 2 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package mpi.search.result.viewer;

import mpi.search.result.model.Match;
import mpi.search.result.model.ResultHandler;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;

import javax.swing.JList;
import javax.swing.JMenuItem;
import javax.swing.JPopupMenu;
import javax.swing.ListSelectionModel;


/**
 * $Id: ResultList.java,v 1.1 2007/03/09 09:42:17 klasal Exp $
 *
 * @author $author$
 * @version $Revision: 1.1 $
 */
public class ResultList extends JList implements MouseListener {
    /** to choose an action which the resulthandler should perform */
    private JPopupMenu actionsMenu;

    /** handler that does something with selected match number */
    private ResultHandler resultHandler;

    /**
     * Creates a new ResultList object.
     */
    public ResultList() {
        this(null);
    }

    /**
     * Creates a new ResultList object.
     *
     * @param resultHandler DOCUMENT ME!
     */
    public ResultList(ResultHandler resultHandler) {
        super();
        this.resultHandler = resultHandler;
        setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
        addMouseListener(this);
    }

    /**
     * DOCUMENT ME!
     *
     * @param popupChoices DOCUMENT ME!
     */
    public void setPopupChoices(String[] popupChoices) {
        if (popupChoices.length > 0) {
            actionsMenu = new JPopupMenu();

            ActionListener actionListener = new ActionListener() {
                    public void actionPerformed(ActionEvent e) {
                        if (1 >= 0) {
                            resultHandler.handleMatch((Match) getSelectedValue(),
                                e.getActionCommand());
                        }
                    }
                };

            JMenuItem menuItem;

            for (int i = 0; i < popupChoices.length; i++) {
                menuItem = new JMenuItem(popupChoices[i]);
                menuItem.addActionListener(actionListener);
                actionsMenu.add(menuItem);
            }
        } else {
            actionsMenu = null;
        }
    }

    /**
     *
     *
     * @param resultHandler DOCUMENT ME!
     */
    public void setResultHandler(ResultHandler resultHandler) {
        this.resultHandler = resultHandler;
    }

    /**
     * DOCUMENT ME!
     *
     * @param e DOCUMENT ME!
     */
    public void mouseClicked(MouseEvent e) {
        if (e.getClickCount() > 1) {
            // first registered action is considered default action
            resultHandler.handleMatch((Match) getSelectedValue(),
                ((JMenuItem) actionsMenu.getSubElements()[0]).getActionCommand());
        }
    }

    /**
     * DOCUMENT ME!
     *
     * @param e DOCUMENT ME!
     */
    public void mouseEntered(MouseEvent e) {
    }

    /**
     * DOCUMENT ME!
     *
     * @param e DOCUMENT ME!
     */
    public void mouseExited(MouseEvent e) {
    }

    // on a pc this is the popup trigger method
    public void mousePressed(MouseEvent e) {
        if ((actionsMenu != null) && e.isPopupTrigger() &&
                (getSelectedValue() != null)) {
            showPopup(e);
        }
    }

    // On the sun this is the popup trigger method
    public void mouseReleased(MouseEvent e) {
        if ((actionsMenu != null) && e.isPopupTrigger() &&
                (getSelectedValue() != null)) {
            showPopup(e);
        }
    }

    private void showPopup(MouseEvent e) {
        actionsMenu.show(ResultList.this, e.getX(), e.getY());
        actionsMenu.setVisible(true);
        requestFocus();
    }
}