Native Libraries: moved code to JNIUtils.cpp and *MessageDialog.cpp

flatlaf-natives/flatlaf-natives-windows/src/main/headers/JNIUtils.h

@@ -0,0 +1,53 @@
+/*
+ * Copyright 2025 FormDev Software GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <windows.h>
+#include <jni.h>
+
+/**
+ * @author Karl Tauber
+ */
+
+//---- class AutoReleaseString ------------------------------------------------
+
+class AutoReleaseString {
+	JNIEnv* env;
+	jstring javaString;
+	const jchar* chars;
+
+public:
+	AutoReleaseString( JNIEnv* _env, jstring _javaString );
+	~AutoReleaseString();
+
+	operator LPCWSTR() { return (LPCWSTR) chars; }
+};
+
+//---- class AutoReleaseStringArray -------------------------------------------
+
+class AutoReleaseStringArray {
+	JNIEnv* env;
+	jstring* javaStringArray;
+	const jchar** charsArray;
+
+public:
+	UINT count;
+
+public:
+	AutoReleaseStringArray( JNIEnv* _env, jobjectArray _javaStringArray );
+	~AutoReleaseStringArray();
+
+	operator LPCWSTR*() { return (LPCWSTR*) charsArray; }
+};