Towards JavaFX support

substratevm/src/com.oracle.svm.hosted/src/com/oracle/svm/hosted/javafx/JavaFXFeature.java

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+/*
+ * Copyright (c) 2018, 2018, 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 com.oracle.svm.hosted.javafx;
+
+import java.util.Objects;
+import java.util.stream.Stream;
+
+import org.graalvm.nativeimage.Feature;
+import org.graalvm.nativeimage.RuntimeClassInitialization;
+import org.graalvm.nativeimage.RuntimeReflection;
+
+import com.oracle.svm.hosted.FeatureImpl;
+
+final class JavaFXFeature implements Feature {
+
+    @Override
+    public boolean isInConfiguration(IsInConfigurationAccess access) {
+        return getJavaFXApplication(access) != null;
+    }
+
+    @Override
+    public void beforeAnalysis(BeforeAnalysisAccess access) {
+        /*
+         * Include subclasses of javafx.application.Application for reflection so users don't have
+         * to do it every time.
+         *
+         * See javafx.application.Application#launch(java.lang.String...).
+         */
+        ((FeatureImpl.BeforeAnalysisAccessImpl) access)
+                        .findSubclasses(getJavaFXApplication(access))
+                        .forEach(RuntimeReflection::register);
+
+        /*
+         * Static initializers that are not supported in JavaFX.
+         */
+        Stream.of("com.sun.javafx.tk.quantum.QuantumRenderer", "javafx.stage.Screen", "com.sun.javafx.scene.control.behavior.BehaviorBase", "com.sun.javafx.scene.control.skin.BehaviorSkinBase",
+                        "javafx.scene.control.SkinBase", "javafx.scene.control.Control", "javafx.scene.control.PopupControl", "javafx.scene.control.SkinBase$StyleableProperties",
+                        "javafx.scene.control.Labeled$StyleableProperties", "javafx.scene.control.SkinBase$StyleableProperties", "com.sun.javafx.tk.quantum.PrismImageLoader2$AsyncImageLoader",
+                        "com.sun.javafx.tk.quantum.PrismImageLoader2", "com.sun.prism.PresentableState")
+                        .map(access::findClassByName)
+                        .filter(Objects::nonNull)
+                        .forEach(RuntimeClassInitialization::delayClassInitialization);
+    }
+
+    private static Class<?> getJavaFXApplication(FeatureAccess access) {
+        return access.findClassByName("javafx.application.Application");
+    }
+
+}