import com.sun.jna.Library;
import com.sun.jna.Native;
import com.sun.jna.Pointer;
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;

public class MacOSBlurEffectExample extends Application {
    
    public interface CocoaLibrary extends Library {
        CocoaLibrary INSTANCE = Native.load("Cocoa", CocoaLibrary.class);

        Pointer objc_getClass(String className);
        Pointer sel_registerName(String selector);
        Pointer objc_msgSend(Pointer receiver, Pointer selector);
        Pointer objc_msgSend(Pointer receiver, Pointer selector, Pointer arg1);
        Pointer objc_msgSend(Pointer receiver, Pointer selector, Pointer arg1, Pointer arg2);
    }

    private Pointer nsVisualEffectViewClass;
    private Pointer nsVisualEffectView;

    public static void main(String[] args) {
        launch(args);
    }

    @Override
    public void start(Stage primaryStage) {
        // 创建一个按钮
        Button button = new Button("点击我");

        // 创建一个StackPane作为根节点
        StackPane root = new StackPane();
        root.getChildren().add(button);

        // 创建场景
        Scene scene = new Scene(root, 600, 400);
        primaryStage.setTitle("macOS 模糊效果示例");
        primaryStage.setScene(scene);
        primaryStage.show();

        // 实现模糊效果
        if (System.getProperty("os.name").toLowerCase().contains("mac")) {
            applyBlurEffect(primaryStage);
        }
    }

    private void applyBlurEffect(Stage stage) {
        // 获取 NSVisualEffectView 类
        nsVisualEffectViewClass = CocoaLibrary.INSTANCE.objc_getClass("NSVisualEffectView");
        if (nsVisualEffectViewClass == null) {
            System.err.println("Failed to get NSVisualEffectView class.");
            return;
        }

        // 创建 NSVisualEffectView 的实例
        Pointer effectView = CocoaLibrary.INSTANCE.objc_msgSend(nsVisualEffectViewClass, 
                CocoaLibrary.INSTANCE.sel_registerName("alloc"));
        if (effectView == null) {
            System.err.println("Failed to allocate NSVisualEffectView.");
            return;
        }

        effectView = CocoaLibrary.INSTANCE.objc_msgSend(effectView, 
                CocoaLibrary.INSTANCE.sel_registerName("initWithFrame:"), Pointer.NULL);
        if (effectView == null) {
            System.err.println("Failed to initialize NSVisualEffectView.");
            return;
        }

        // 设置模糊效果
        CocoaLibrary.INSTANCE.objc_msgSend(effectView,
                CocoaLibrary.INSTANCE.sel_registerName("setMaterial:"), 
                CocoaLibrary.INSTANCE.objc_msgSend(nsVisualEffectViewClass, 
                        CocoaLibrary.INSTANCE.sel_registerName("materialDark")));

        // 在这里将 effectView 添加到 JavaFX 的窗口中，可能需要额外处理
        // 直接在 JavaFX 窗口中添加可能需要使用 JFXPanel 或 SWT
    }
}