IntelliJ Themes: added Java 9 module descriptor to flatlaf-intellij-themes-<version>.jar

flatlaf-intellij-themes/build.gradle.kts

@@ -25,6 +25,18 @@ dependencies {
 	implementation( project( ":flatlaf-core" ) )
 }
 
+if( JavaVersion.current() >= JavaVersion.VERSION_1_9 ) {
+	sourceSets {
+		create( "module-info" ) {
+			java {
+				// include "src/main/java" here to get compile errors if classes are
+				// used from other modules that are not specified in module dependencies
+				setSrcDirs( listOf( "src/main/module-info", "src/main/java" ) )
+			}
+		}
+	}
+}
+
 tasks {
 	assemble {
 		dependsOn(
@@ -33,6 +45,26 @@ tasks {
 		)
 	}
 
+	if( JavaVersion.current() >= JavaVersion.VERSION_1_9 ) {
+		named<JavaCompile>( "compileModuleInfoJava" ) {
+			sourceCompatibility = "9"
+			targetCompatibility = "9"
+
+			dependsOn( ":flatlaf-core:jar" )
+
+			options.compilerArgs.add( "--module-path" )
+			options.compilerArgs.add( project( ":flatlaf-core" ).tasks["jar"].outputs.files.asPath )
+		}
+	}
+
+	jar {
+		if( JavaVersion.current() >= JavaVersion.VERSION_1_9 ) {
+			from( sourceSets["module-info"].output ) {
+				include( "module-info.class" )
+			}
+		}
+	}
+
 	javadoc {
 		options {
 			this as StandardJavadocDocletOptions