changeset 14785:174b223645b7

8136366: Add a public API to create a L&F without installation Reviewed-by: prr, serb
author alexsch
date Sun, 22 May 2016 12:31:56 +0400
parents d24681015f6b
children e608ac5f93e5
files src/java.desktop/share/classes/javax/swing/UIManager.java test/javax/swing/UIManager/8136366/CreateLookAndFeelTest.java
diffstat 2 files changed, 148 insertions(+), 0 deletions(-) [+]
line wrap: on
line diff
--- a/src/java.desktop/share/classes/javax/swing/UIManager.java	Sat May 21 02:53:37 2016 +0300
+++ b/src/java.desktop/share/classes/javax/swing/UIManager.java	Sun May 22 12:31:56 2016 +0400
@@ -59,6 +59,7 @@
 import sun.swing.SwingUtilities2;
 import java.lang.reflect.Method;
 import java.util.HashMap;
+import java.util.Objects;
 import sun.awt.AppContext;
 import sun.awt.AWTAccessor;
 
@@ -495,6 +496,48 @@
         return getLAFState().lookAndFeel;
     }
 
+    /**
+     * Creates a supported built-in Java {@code LookAndFeel} specified
+     * by the given {@code L&F name} name.
+     *
+     * @param name a {@code String} specifying the name of the built-in
+     *             look and feel
+     * @return the built-in {@code LookAndFeel} object
+     * @throws NullPointerException if {@code name} is {@code null}
+     * @throws UnsupportedLookAndFeelException if the built-in Java {@code L&F}
+     *         is not found for the given name or it is not supported by the
+     *         underlying platform
+     *
+     * @see LookAndFeel#getName
+     * @see LookAndFeel#isSupportedLookAndFeel
+     *
+     * @since 9
+     */
+    public static LookAndFeel createLookAndFeel(String name)
+            throws UnsupportedLookAndFeelException {
+        Objects.requireNonNull(name);
+
+        if ("GTK look and feel".equals(name)) {
+            name = "GTK+";
+        }
+
+        try {
+            for (LookAndFeelInfo info : installedLAFs) {
+                if (info.getName().equals(name)) {
+                    Class<?> cls = Class.forName(UIManager.class.getModule(),
+                                                 info.getClassName());
+                    LookAndFeel laf = (LookAndFeel) cls.newInstance();
+                    if (!laf.isSupportedLookAndFeel()) {
+                        break;
+                    }
+                    return laf;
+                }
+            }
+        } catch (InstantiationException | IllegalAccessException ignore) {
+        }
+
+        throw new UnsupportedLookAndFeelException(name);
+    }
 
     /**
      * Sets the current look and feel to {@code newLookAndFeel}.
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/javax/swing/UIManager/8136366/CreateLookAndFeelTest.java	Sun May 22 12:31:56 2016 +0400
@@ -0,0 +1,105 @@
+/*
+ * Copyright (c) 2016, 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.
+ *
+ * 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.
+ */
+
+import java.awt.Toolkit;
+import javax.swing.LookAndFeel;
+import javax.swing.SwingUtilities;
+import javax.swing.UIManager;
+import javax.swing.UnsupportedLookAndFeelException;
+import sun.awt.SunToolkit;
+
+/**
+ * @test
+ * @bug 8136366
+ * @summary Add a public API to create a L&F without installation
+ * @modules java.desktop/sun.awt
+ */
+public class CreateLookAndFeelTest {
+
+    public static void main(String[] args) throws Exception {
+        SwingUtilities.invokeAndWait(CreateLookAndFeelTest::createLAFs);
+    }
+
+    private static void createLAFs() {
+
+        for (LAFTest lafTest : LAFTest.values()) {
+            createLAF(lafTest);
+        }
+
+        try {
+            UIManager.createLookAndFeel(null);
+        } catch (NullPointerException e) {
+            return;
+        } catch (UnsupportedLookAndFeelException ignore) {
+        }
+
+        throw new RuntimeException("NPE is not thrown!");
+    }
+
+    private static void createLAF(LAFTest lafTest) {
+        try {
+            UIManager.createLookAndFeel(lafTest.lafName);
+
+        } catch (UnsupportedLookAndFeelException e) {
+            if (lafTest.isSupported) {
+                throw new RuntimeException(e);
+            }
+        }
+    }
+
+    private static boolean isOSAvailable(String supportedOS) {
+        return System.getProperty("os.name")
+                .toLowerCase()
+                .contains(supportedOS);
+    }
+
+    private static boolean isGTKAvailable() {
+        Toolkit toolkit = Toolkit.getDefaultToolkit();
+        if (!(toolkit instanceof SunToolkit)) {
+            return false;
+        }
+        return ((SunToolkit) toolkit).isNativeGTKAvailable();
+    }
+
+    enum LAFTest {
+
+        METAL("Metal"),
+        NIMBUS("Nimbus"),
+        MOTIF("CDE/Motif"),
+        WINDOWS("Windows", isOSAvailable("windows")),
+        GTK("GTK look and feel", isGTKAvailable()),
+        MAC("Mac OS X", isOSAvailable("mac"));
+
+        private final String lafName;
+        private final boolean isSupported;
+
+        private LAFTest(String lafName) {
+            this(lafName, true);
+        }
+
+        private LAFTest(String lafName, boolean crossPlatform) {
+            this.lafName = lafName;
+            this.isSupported = crossPlatform;
+        }
+    }
+}