added system property flatlaf.useNativeLibrary to allow disabling loading of FlatLaf native library (issue #674)

CHANGELOG.md

@@ -3,6 +3,11 @@ FlatLaf Change Log
 
 ## 3.2-SNAPSHOT
 
+#### New features and improvements
+
+- Added system property `flatlaf.useNativeLibrary` to allow disabling loading of
+  FlatLaf native library. (issue #674)
+
 #### Fixed bugs
 
 - Styling: Fixed scaling of some styling properties (`rowHeight` for Table and

flatlaf-core/src/main/java/com/formdev/flatlaf/FlatSystemProperties.java

@@ -150,10 +150,24 @@ public interface FlatSystemProperties
 	 * <p>
 	 * <strong>Allowed Values</strong> {@code false} and {@code true}<br>
 	 * <strong>Default</strong> {@code true}
+	 *
 	 * @since 2.5
 	 */
 	String UPDATE_UI_ON_SYSTEM_FONT_CHANGE = "flatlaf.updateUIOnSystemFontChange";
 
+	/**
+	 * Specifies whether FlatLaf native library should be used.
+	 * <p>
+	 * Setting this to {@code false} disables loading native library,
+	 * which also disables some features that depend on the native library.
+	 * <p>
+	 * <strong>Allowed Values</strong> {@code false} and {@code true}<br>
+	 * <strong>Default</strong> {@code true}
+	 *
+	 * @since 3.2
+	 */
+	String USE_NATIVE_LIBRARY = "flatlaf.useNativeLibrary";
+
 	/**
 	 * Specifies a directory in which the native FlatLaf libraries have been extracted.
 	 * The path can be absolute or relative to current application working directory.

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatNativeLibrary.java

@@ -33,6 +33,7 @@ import com.formdev.flatlaf.util.SystemInfo;
  */
 class FlatNativeLibrary
 {
+	private static boolean initialized;
 	private static NativeLibrary nativeLibrary;
 
 	/**
@@ -45,7 +46,11 @@ class FlatNativeLibrary
 	}
 
 	private static void initialize() {
-		if( nativeLibrary != null )
+		if( initialized )
+			return;
+		initialized = true;
+
+		if( !FlatSystemProperties.getBoolean( FlatSystemProperties.USE_NATIVE_LIBRARY, true ) )
 			return;
 
 		String classifier;