PackageVariant: an early support API for automated usages

Author: pavl-x86-machine

snaploader/src/main/java/electrostatic4j/snaploader/platform/util/PackageVariant.java

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+/*
+ * Copyright (c) 2023-2025, The Electrostatic-Sandbox Distributed Simulation Framework, jSnapLoader
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ *
+ * * Neither the name of 'Electrostatic-Sandbox' nor the names of its contributors
+ *   may be used to endorse or promote products derived from this software
+ *   without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package electrostatic4j.snaploader.platform.util;
+
+/**
+ * A namespace class exposing checks for the native window
+ * currently in runtime; this could give some more insights
+ * about the type of the framework the application is running
+ * on.
+ *
+ * @author pavl_g.
+ */
+public final class PackageVariant {
+
+    private static final String FLUTTER_ACTIVITY_PATH = "io.flutter.embedding.android.FlutterActivity";
+    private static final String JME_CONTEXT_PATH = "com.jme3.system.JmeContext";
+    private static final String ANDROID_CONTEXT_PATH = "android.content.Context";
+    private static final String JAVA_FX_CONTEXT_PATH = "javafx.application.Application";
+    private static final String JAVA_AWT_CONTEXT_PATH = "java.awt.Frame";
+    private static final String GWT_CONTEXT_PATH = "com.google.gwt.user.client.Window";
+
+    private PackageVariant() {
+    }
+
+    public static boolean hasJavaFxWindow() {
+        try {
+            return ClassLoader.getSystemClassLoader().loadClass(PackageVariant.JAVA_FX_CONTEXT_PATH) != null;
+        } catch (ClassNotFoundException e) {
+            return false;
+        }
+    }
+
+    public static boolean hasJavaAWTWindow() {
+        try {
+            return ClassLoader.getSystemClassLoader().loadClass(PackageVariant.JAVA_AWT_CONTEXT_PATH) != null;
+        } catch (ClassNotFoundException e) {
+            return false;
+        }
+    }
+
+    public static boolean hasAndroidActivity() {
+        try {
+            return ClassLoader.getSystemClassLoader().loadClass(PackageVariant.ANDROID_CONTEXT_PATH) != null;
+        } catch (ClassNotFoundException e) {
+            return false;
+        }
+    }
+
+    public static boolean hasGWTContext() {
+        try {
+            return ClassLoader.getSystemClassLoader().loadClass(PackageVariant.GWT_CONTEXT_PATH) != null;
+        } catch (ClassNotFoundException e) {
+            return false;
+        }
+    }
+
+    public static boolean hasJmeContext() {
+        try {
+            return ClassLoader.getSystemClassLoader().loadClass(PackageVariant.JME_CONTEXT_PATH) != null;
+        } catch (ClassNotFoundException e) {
+            return false;
+        }
+    }
+
+    public static boolean hasFlutterActivity() {
+        try {
+            return ClassLoader.getSystemClassLoader().loadClass(PackageVariant.FLUTTER_ACTIVITY_PATH) != null;
+        } catch (ClassNotFoundException e) {
+            return false;
+        }
+    }
+
+    public static boolean hasAndroidActivityOnly() {
+        return hasAndroidActivity() && !hasFlutterActivity();
+    }
+
+    public static boolean hasJmeAndroidContext() {
+        return hasAndroidActivity() && hasJmeContext();
+    }
+
+    public static boolean hasJmeFlutterContext() {
+        return hasFlutterActivity() && hasJmeContext();
+    }
+}