noneditablepropertyeditor.java

openmap java写的开源数字地图程序. 用applet实现,可以像google map 那样放大缩小地图.

// **********************************************************************
// 
// <copyright>
// 
//  BBN Technologies
//  10 Moulton Street
//  Cambridge, MA 02138
//  [phone]
// 
//  Copyright (C) BBNT Solutions LLC. All rights reserved.
// 
// </copyright>
// **********************************************************************
// 
// $Source: /cvs/distapps/openmap/src/openmap/com/bbn/openmap/util/propertyEditor/NonEditablePropertyEditor.java,v $
// $RCSfile: NonEditablePropertyEditor.java,v $
// $Revision: 1.3.2.1 $
// $Date: 2004/10/14 18:27:47 $
// $Author: dietrick $
// 
// **********************************************************************

package com.bbn.openmap.util.propertyEditor;

import java.awt.Component;
import java.awt.event.ActionEvent;
import java.beans.PropertyEditorSupport;

import javax.swing.JLabel;

/**
 * A PropertyEditor that doesn't let you edit the property.
 */
public class NonEditablePropertyEditor extends PropertyEditorSupport {

    /** The Component returned by getCustomEditor(). */
    JLabel label;

    /** Create NonEditablePropertyEditor. */
    public NonEditablePropertyEditor() {}

    //
    //  PropertyEditor interface
    //

    /**
     * PropertyEditor interface.
     * 
     * @return true
     */
    public boolean supportsCustomEditor() {
        return true;
    }

    /**
     * Returns a blank JLabel.
     * 
     * @return JButton button
     */
    public Component getCustomEditor() {
        if (label == null) {
            label = new JLabel();
        }
        return label;
    }

    /** Implement PropertyEditor interface. */
    public void setValue(Object someObj) {
        if (someObj instanceof String) {
            label.setText((String) someObj);
        }
    }

    /** Implement PropertyEditor interface. */
    public String getAsText() {
        return label.getText();
    }

    //
    //  ActionListener interface
    //

    public void actionPerformed(ActionEvent e) {}
}