/*

 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code 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

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package javax.swing.plaf.basic;

import javax.swing.*;

import javax.swing.plaf.UIResource;

import java.awt.Graphics;

import java.awt.Color;

import java.awt.Component;

import java.awt.Polygon;

import java.io.Serializable;

/**

 * Factory object that can vend Icons appropriate for the basic L & F.

 * <p>

 * <strong>Warning:</strong>

 * Serialized objects of this class will not be compatible with

 * future Swing releases. The current serialization support is

 * appropriate for short term storage or RMI between applications running

 * the same version of Swing.  As of 1.4, support for long term storage

 * of all JavaBeans™

 * has been added to the <code>java.beans</code> package.

 * Please see {@link java.beans.XMLEncoder}.

 *

 * @author David Kloba

 * @author Georges Saab

 */

@SuppressWarnings("serial") // Same-version serialization only

public class BasicIconFactory implements Serializable

{

    private static Icon frame_icon;

    private static Icon checkBoxIcon;

    private static Icon radioButtonIcon;

    private static Icon checkBoxMenuItemIcon;

    private static Icon radioButtonMenuItemIcon;

    private static Icon menuItemCheckIcon;

    private static Icon menuItemArrowIcon;

    private static Icon menuArrowIcon;

    /**

     * Returns a menu item check icon.

     *

     * @return a menu item check icon

     */

    public static Icon getMenuItemCheckIcon() {

        if (menuItemCheckIcon == null) {

            menuItemCheckIcon = new MenuItemCheckIcon();

        }

        return menuItemCheckIcon;

    }

    /**

     * Returns a menu item arrow icon.

     *

     * @return a menu item arrow icon

     */

    public static Icon getMenuItemArrowIcon() {

        if (menuItemArrowIcon == null) {

            menuItemArrowIcon = new MenuItemArrowIcon();

        }

        return menuItemArrowIcon;

    }

    /**

     * Returns a menu arrow icon.

     *

     * @return a menu arrow icon

     */

    public static Icon getMenuArrowIcon() {

        if (menuArrowIcon == null) {

            menuArrowIcon = new MenuArrowIcon();

        }

        return menuArrowIcon;

    }

    /**

     * Returns a check box icon.

     *

     * @return a check box icon

     */

    public static Icon getCheckBoxIcon() {

        if (checkBoxIcon == null) {

            checkBoxIcon = new CheckBoxIcon();

        }

        return checkBoxIcon;

    }

    /**

     * Returns a radio button icon.

     *

     * @return a radio button icon

     */

    public static Icon getRadioButtonIcon() {

        if (radioButtonIcon == null) {

            radioButtonIcon = new RadioButtonIcon();

        }

        return radioButtonIcon;

    }

    /**

     * Returns a check box menu item icon.

     *

     * @return a check box menu item icon

     */

    public static Icon getCheckBoxMenuItemIcon() {

        if (checkBoxMenuItemIcon == null) {

            checkBoxMenuItemIcon = new CheckBoxMenuItemIcon();

        }

        return checkBoxMenuItemIcon;

    }

    /**

     * Returns a radio button menu item icon.

     *

     * @return a radio button menu item icon

     */

    public static Icon getRadioButtonMenuItemIcon() {

        if (radioButtonMenuItemIcon == null) {

            radioButtonMenuItemIcon = new RadioButtonMenuItemIcon();

        }

        return radioButtonMenuItemIcon;

    }

    /**

     * Returns an empty frame icon.

     *

     * @return an empty frame icon

     */

    public static Icon createEmptyFrameIcon() {

        if(frame_icon == null)

            frame_icon = new EmptyFrameIcon();

        return frame_icon;

    }

    private static class EmptyFrameIcon implements Icon, Serializable {

        int height = 16;

        int width = 14;

        public void paintIcon(Component c, Graphics g, int x, int y) {

        }

        public int getIconWidth() { return width; }

        public int getIconHeight() { return height; }

    };

    private static class CheckBoxIcon implements Icon, Serializable

    {

        public void paintIcon(Component c, Graphics g, int x, int y) {

        }

        public int getIconWidth() {

            return csize;

        }

        public int getIconHeight() {

            return csize;

        }

    }

    private static class RadioButtonIcon implements Icon, UIResource, Serializable

    {

        public void paintIcon(Component c, Graphics g, int x, int y) {

        }

        public int getIconWidth() {

            return 13;

        }

        public int getIconHeight() {

            return 13;

        }

    } // end class RadioButtonIcon

    private static class CheckBoxMenuItemIcon implements Icon, UIResource, Serializable

    {

        public void paintIcon(Component c, Graphics g, int x, int y) {

            AbstractButton b = (AbstractButton) c;

            ButtonModel model = b.getModel();

            boolean isSelected = model.isSelected();

            if (isSelected) {

                g.drawLine(x+7, y+1, x+7, y+3);

                g.drawLine(x+6, y+2, x+6, y+4);

                g.drawLine(x+5, y+3, x+5, y+5);

                g.drawLine(x+4, y+4, x+4, y+6);

                g.drawLine(x+3, y+5, x+3, y+7);

                g.drawLine(x+2, y+4, x+2, y+6);

                g.drawLine(x+1, y+3, x+1, y+5);

            }

        }

        public int getIconWidth() { return 9; }

        public int getIconHeight() { return 9; }

    } // End class CheckBoxMenuItemIcon

    private static class RadioButtonMenuItemIcon implements Icon, UIResource, Serializable

    {

        public void paintIcon(Component c, Graphics g, int x, int y) {

            AbstractButton b = (AbstractButton) c;

            ButtonModel model = b.getModel();

            if (b.isSelected() == true) {

                g.fillOval(x+1, y+1, getIconWidth(), getIconHeight());

            }

        }

        public int getIconWidth() { return 6; }

        public int getIconHeight() { return 6; }

    } // End class RadioButtonMenuItemIcon

    private static class MenuItemCheckIcon implements Icon, UIResource, Serializable{

        public void paintIcon(Component c, Graphics g, int x, int y) {

        }

        public int getIconWidth() { return 9; }

        public int getIconHeight() { return 9; }

    } // End class MenuItemCheckIcon

    private static class MenuItemArrowIcon implements Icon, UIResource, Serializable {

        public void paintIcon(Component c, Graphics g, int x, int y) {

        }

        public int getIconWidth() { return 4; }

        public int getIconHeight() { return 8; }

    } // End class MenuItemArrowIcon

    private static class MenuArrowIcon implements Icon, UIResource, Serializable {

        public void paintIcon(Component c, Graphics g, int x, int y) {

            Polygon p = new Polygon();

            p.addPoint(x, y);

            p.addPoint(x+getIconWidth(), y+getIconHeight()/2);

            p.addPoint(x, y+getIconHeight());

            g.fillPolygon(p);

        }

        public int getIconWidth() { return 4; }

        public int getIconHeight() { return 8; }

    } // End class MenuArrowIcon

}