1 /*

     2  * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.

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

     4  *

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

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

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

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

    13  * accompanied this code).

    14  *

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

    16  * 2 along with this work; if not, write to the Free Software Foundation,

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

    18  *

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

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

    21  * questions.

    22  */

    23 

    24  /*

    25  * @test

    26  * @bug 8226783

    27  * @key headful

    28  * @summary Verify System L&F

    29  */

    30 

    31 /*

    32  * Verify the System LAF is what we expect based on platform and,

    33  * in at least one case, the desktop environment.

    34  * Since changes to the system LAF are a once in a blue moon event,

    35  * this test is useful to tell us of unexpected problems.

    36  * Note: this test must be run in a headful environment

    37  * since otherwise a system LAF may not be available.

    38  */

    39 

    40 public class SystemLookAndFeelTest {

    41 

    42     public static void main(String[] args) {

    43 

    44         String laf = javax.swing.UIManager.getSystemLookAndFeelClassName();

    45         String os = System.getProperty("os.name").toLowerCase();

    46         System.out.println("OS is " + os);

    47         System.out.println("Reported System LAF is " + laf);

    48 

    49         String expLAF = null;

    50         if (os.contains("windows")) {

    51             expLAF = "com.sun.java.swing.plaf.windows.WindowsLookAndFeel";

    52         } else if (os.contains("macos")) {

    53             expLAF = "com.apple.laf.AquaLookAndFeel";

    54         } else if (os.contains("linux") || os.contains("sunos")) {

    55            /*

    56             * The implementation keys off the following desktop setting to

    57             * decide if GTK is an appropriate system L&F.

    58             * In its absence, there probably isn't support for the GTK L&F

    59             * anyway. It does not tell us if the GTK libraries are available

    60             * but they really should be if this is a gnome session.

    61             * If it proves necessary the test can perhaps be updated to see

    62             * if the GTK LAF is listed as installed and can be instantiated.

    63             */

    64            String gnome = System.getenv("GNOME_DESKTOP_SESSION_ID");

    65            System.out.println("Gnome desktop session ID is " + gnome);

    66            if (gnome != null) {

    67                expLAF = "com.sun.java.swing.plaf.gtk.GTKLookAndFeel";

    68            } else if (os.contains("linux")) {

    69                expLAF = "javax.swing.plaf.metal.MetalLookAndFeel";

    70            } else if (os.contains("sunos")) {

    71                expLAF = "com.sun.java.swing.plaf.motif.MotifLookAndFeel";

    72            }

    73        }

    74         System.out.println("Expected System LAF is " + expLAF);

    75         if (expLAF == null) {

    76             System.out.println("No match for expected LAF, unknown OS ?");

    77             return;

    78         }

    79         if (!(laf.equals(expLAF))) {

    80             throw new RuntimeException("LAF not as expected");

    81         }

    82    }

    83 }