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

flatlaf-natives/flatlaf-natives-windows/src/main/cpp/JNIUtils.cpp

@@ -0,0 +1,67 @@
+/*
+ * Copyright 2024 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.
+ */
+
+// avoid inlining of printf()
+#define _NO_CRT_STDIO_INLINE
+
+#include "JNIUtils.h"
+
+/**
+ * @author Karl Tauber
+ */
+
+//---- class AutoReleaseString ------------------------------------------------
+
+AutoReleaseString::AutoReleaseString( JNIEnv* _env, jstring _javaString ) {
+	env = _env;
+	javaString = _javaString;
+	chars = (javaString != NULL) ? env->GetStringChars( javaString, NULL ) : NULL;
+}
+
+AutoReleaseString::~AutoReleaseString() {
+	if( chars != NULL )
+		env->ReleaseStringChars( javaString, chars );
+}
+
+//---- class AutoReleaseStringArray -------------------------------------------
+
+AutoReleaseStringArray::AutoReleaseStringArray( JNIEnv* _env, jobjectArray _javaStringArray ) {
+	env = _env;
+	count = (_javaStringArray != NULL) ? env->GetArrayLength( _javaStringArray ) : 0;
+	if( count <= 0 )
+		return;
+
+	javaStringArray = new jstring[count];
+	charsArray = new const jchar*[count];
+
+	for( int i = 0; i < count; i++ ) {
+		javaStringArray[i] = (jstring) env->GetObjectArrayElement( _javaStringArray, i );
+		charsArray[i] = env->GetStringChars( javaStringArray[i] , NULL );
+	}
+}
+
+AutoReleaseStringArray::~AutoReleaseStringArray() {
+	if( count == 0 )
+		return;
+
+	for( int i = 0; i < count; i++ ) {
+		env->ReleaseStringChars( javaStringArray[i], charsArray[i] );
+		env->DeleteLocalRef( javaStringArray[i] );
+	}
+
+	delete[] javaStringArray;
+	delete[] charsArray;
+}