test/jdk/java/awt/Mouse/MouseDragEnterExitTest.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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
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 *
 * 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).
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 * 2 along with this work; if not, write to the Free Software Foundation,
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import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Frame;
import java.awt.Panel;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.List;

/*
 * @test
 * @bug 4141361
 * @summary Test to Ensures that mouse enter / exit is delivered to a new
 *          frame or component during a drag
 * @library /java/awt/regtesthelpers
 * @build PassFailJFrame
 * @run main/manual MouseDragEnterExitTest
 */

public class MouseDragEnterExitTest {
    public static void main(String[] args) throws Exception {
        String INSTRUCTIONS = """
                Click on the blue frame, drag to the white frame, and back
                You should get enter/exit messages for the frames when dragging
                """;
        PassFailJFrame.builder()
                .title("Test Instructions")
                .instructions(INSTRUCTIONS)
                .rows((int) INSTRUCTIONS.lines().count() + 2)
                .columns(35)
                .testUI(MouseEvents.initialize())
                .logArea(8)
                .build()
                .awaitAndCheck();
    }
}

class MouseEvents extends Frame {
    static int WITH_WIDGET = 0;

    public MouseEvents(int mode) {
        super("Mouse Drag Enter/Exit Test");
        setSize(300, 300);

        addMouseListener(new MouseAdapter() {
            @Override
            public void mouseEntered(MouseEvent e) {
                PassFailJFrame.log("Frame MOUSE_ENTERED" + ": " + " " +
                        e.getX() + " " + e.getY());
            }

            @Override
            public void mouseExited(MouseEvent e) {
                PassFailJFrame.log("Frame MOUSE_EXITED" + ": " + " " +
                        e.getX() + " " + e.getY());
            }
        });

        if (mode == WITH_WIDGET) {
            setLayout(new BorderLayout());
            add("Center", new SimplePanel());
        }
    }

    public static List<Frame> initialize() {
        MouseEvents m = new MouseEvents(MouseEvents.WITH_WIDGET);
        m.setLocation(500, 300);
        MouseEvents t = new MouseEvents(MouseEvents.WITH_WIDGET + 1);
        t.setLocation(200, 200);
        return List.of(m, t);
    }
}

class SimplePanel extends Panel {
    public SimplePanel() {
        super();
        setName("Test Panel");
        addMouseListener(new MouseAdapter() {
            @Override
            public void mouseEntered(MouseEvent e) {
                PassFailJFrame.log("Panel MOUSE_ENTERED" + ": " + " " +
                        e.getX() + " " + e.getY());
            }

            @Override
            public void mouseExited(MouseEvent e) {
                PassFailJFrame.log("Panel MOUSE_EXITED" + ": " + " " +
                        e.getX() + " " + e.getY());
            }
        });
        setSize(100, 100);
        setBackground(Color.blue);
    }
}