EmptyIcon.java

/*******************************************************************************
 * Copyright (c) 1998, 2015 Oracle and/or its affiliates. All rights reserved.
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
 * which accompanies this distribution.
 * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
 * and the Eclipse Distribution License is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * Contributors:
 *     Oracle - initial API and implementation from Oracle TopLink
******************************************************************************/
package org.eclipse.persistence.tools.workbench.uitools.swing;

import java.awt.Component;
import java.awt.Graphics;

import javax.swing.Icon;

/**
 * Implement the Icon interface with an icon that has a size but
 * does not paint anything on the graphics context.
 */
public class EmptyIcon
    implements Icon
{
    private final int width;
    private final int height;

    public static final EmptyIcon NULL_INSTANCE = new EmptyIcon(0);

    public static final EmptyIcon SMALL_ICON = new EmptyIcon(16);

    public EmptyIcon(int width, int height) {
        super();
        this.width = width;
        this.height = height;
    }

    public EmptyIcon(int size) {
        this(size, size);
    }


    // ********** Icon implementation **********

    public void paintIcon(Component c, Graphics g, int x, int y) {
        // don't paint anything for an empty icon
    }

    public int getIconWidth() {
        return this.width;
    }

    public int getIconHeight() {
        return this.height;
    }

}