querydialog.java

OpenJMS是一个开源的Java Message Service API 1.0.2 规范的实现,它包含有以下特性： *. 它既支持点到点（point-to-point）（PTP）模型和发布/订

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 *    copy of this document.
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 *
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 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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 * Copyright 2000 (C) Exoffice Technologies Inc. All Rights Reserved.
 *
 * $Id: QueryDialog.java,v 1.1 2004/11/26 01:51:15 tanderson Exp $
 *
 * Date         Author  Changes
 * $Date	    jimm    Created
 */

package org.exolab.jms.tools.admin;

import javax.swing.JFrame;
import javax.swing.JOptionPane;


/**
 * A generic query dialaog, used to confirm all add/delete operations.
 * The class is just a wrapper around a JOptionMenuPane .
 *
 *
 * @version     $Revision: 1.1 $ $Date: 2004/11/26 01:51:15 $
 * @author      <a href="mailto:[e-mail]">Jim Mourikis</a>
 * @see         AdminMgr
 */
public class QueryDialog {

    // The form parent this dialog belongs to
    private JFrame parent_;

    // The command status used to shutdown this window.
    private int status_;

    // The one and only instance of this object.
    static private QueryDialog instance_;

    /**
     * Creates new form QueryDialog
     *
     * @param parent The form dialog
     *
     */
    public QueryDialog(JFrame parent) {
        parent_ = parent;
    }

    /**
     * Get the one and only instance of this dialog. The dialog must first
     * have been created with the create call below.
     *
     * @return QueryDialog the one and only instance
     *
     */
    public static QueryDialog instance() {
        return instance_;
    }


    /**
     * Create the one and only instance of the Query Dialog.
     *
     * @param parent the parent of this dialog
     * @return QueryDialog the one and only instance
     *
     */
    public static QueryDialog create(JFrame parent) {
        if (instance_ == null) {
            instance_ = new QueryDialog(parent);
        }
        return instance_;
    }

    /**
     * Popup the dialog and wait for the user to either OK or Cancel. Display
     * the give string.
     *
     * @param st The string to display.
     *
     */
    public void display(String st) {
        status_ = JOptionPane.showConfirmDialog
            (parent_, st, "Confirm Deletion", JOptionPane.YES_NO_OPTION,
                JOptionPane.QUESTION_MESSAGE);

    }

    /**
     * Will return true if the action was confirmed. i.e. the OK button was
     * pressed.
     *
     * @return boolean the action was confirmed.
     *
     */
    public boolean isConfirmed() {
        return status_ == JOptionPane.YES_OPTION;
    }

} // End QueryDialog