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Cross-platform SystemTray support for Swing/AWT, GtkStatusIcon, and AppIndicator on Java 8+
There is a newer version: 4.4
/*
 * Copyright 2021 dorkbox, llc
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package dorkbox.systemTray.util;

import java.awt.Color;

import javax.swing.JComponent;
import javax.swing.JMenuItem;
import javax.swing.JPopupMenu;
import javax.swing.JSeparator;
import javax.swing.plaf.MenuItemUI;
import javax.swing.plaf.PopupMenuUI;
import javax.swing.plaf.SeparatorUI;

import dorkbox.systemTray.Entry;
import dorkbox.systemTray.Menu;
import dorkbox.systemTray.ui.swing.SwingUIFactory;
import dorkbox.util.swing.DefaultMenuItemUI;
import dorkbox.util.swing.DefaultPopupMenuUI;
import dorkbox.util.swing.DefaultSeparatorUI;

/**
 * Factory to allow for Look & Feel of the Swing UI components in the SystemTray.
 *
 * This implementation is provided as an example of what looks reasonable on our systems for Nimbus. Naturally, everyone will have
 * different systems and thus will want to change this based on their own, specified Swing L&F.
 *
 * NOTICE: components can ALSO have different sizes attached to them, resulting in different sized components
 * mini
 *       myButton.putClientProperty("JComponent.sizeVariant", "mini");
 * small
 *       mySlider.putClientProperty("JComponent.sizeVariant", "small");
 * large
 *       myTextField.putClientProperty("JComponent.sizeVariant", "large");
 */
@SuppressWarnings("Duplicates")
public
class WindowsSwingUI implements SwingUIFactory {

    /**
     * Allows one to specify the Look & Feel of the menus (The main SystemTray and sub-menus)
     *
     * @param jPopupMenu the swing JPopupMenu that is displayed when one clicks on the System Tray icon
     * @param entry the entry which is bound to the menu, or null if it is the main SystemTray menu.
     *
     * @return the UI used to customize the Look & Feel of the SystemTray menu + sub-menus
     */
    @Override
    public
    PopupMenuUI getMenuUI(final JPopupMenu jPopupMenu, final Menu entry) {
        return new DefaultPopupMenuUI(jPopupMenu) {
            @Override
            public
            void installUI(final JComponent c) {
                super.installUI(c);
            }
        };
}

    /**
     * Allows one to specify the Look & Feel of a menu entry
     *
     * @param jMenuItem the swing JMenuItem that is displayed in the menu
     * @param entry the entry which is bound to the JMenuItem. Can be null during initialization.
     *
     * @return the UI used to customize the Look & Feel of the menu entry
     */
    @Override
    public
    MenuItemUI getItemUI(final JMenuItem jMenuItem, final Entry entry) {
        return new DefaultMenuItemUI(jMenuItem) {
            @Override
            public
            void installUI(final JComponent c) {
                super.installUI(c);
            }
        };
    }

    /**
     * Allows one to specify the Look & Feel of a menu separator entry
     *
     * @param jSeparator the swing JSeparator that is displayed in the menu
     *
     * @return the UI used to customize the Look & Feel of a menu separator entry
     */
    @Override
    public
    SeparatorUI getSeparatorUI(final JSeparator jSeparator) {
        return new DefaultSeparatorUI(jSeparator);
    }


    /**
     * This saves a vector CheckMark to a correctly sized PNG file. The checkmark image will ALWAYS be centered in the targetImageSize
     * (which is square)
     *
     * @param color the color of the CheckMark
     * @param checkMarkSize the size of the CheckMark inside the image. (does not include padding)
     *
     * @return the full path to the checkmark image
     */
    @Override
    public
    String getCheckMarkIcon(final Color color, final int checkMarkSize, final int targetImageSize) {
        return HeavyCheckMark.get(color, checkMarkSize, targetImageSize);
    }
}