package de.codecentric.centerdevice.glass;

import com.sun.glass.ui.Application;
import com.sun.glass.ui.Menu;
import com.sun.glass.ui.MenuBar;
import com.sun.glass.ui.MenuItem;
import com.sun.javafx.menu.MenuBase;
import com.sun.javafx.tk.TKSystemMenu;
import com.sun.javafx.tk.Toolkit;

import java.lang.reflect.Field;

import de.codecentric.centerdevice.util.ReflectionUtils;

public class TKSystemMenuAdapter {
    
	private static final String GLASS_SYSTEM_MENU_BAR = "glassSystemMenuBar";
	private static final String INSERT_MENU = "insertMenu";

	private static final int APPLE_MENU_INDEX = 0;

	private TKSystemMenu systemMenu;
	
	private Field glassSystemMenuBar;
	
	public TKSystemMenuAdapter() throws ReflectiveOperationException {
		systemMenu = Toolkit.getToolkit().getSystemMenu();
		glassSystemMenuBar = ReflectionUtils.getAccessibleField(systemMenu, GLASS_SYSTEM_MENU_BAR);
	}

	public void setAppleMenu(MenuBase menu) throws Throwable {
		MenuBar glassSystemMenuBar = getMenuBar();
		if (glassSystemMenuBar == null) {
			createMenuBar();
		} else {
			removeMenu(glassSystemMenuBar, 0);
		}
		insertMenu(menu, APPLE_MENU_INDEX);
	}

	private void insertMenu(MenuBase menu, int index) throws Throwable {
	    ReflectionUtils.getAccessibleMethod(systemMenu, INSERT_MENU, Menu.class, MenuBase.class, int.class).invoke(systemMenu, null, menu, index);
	}

	private void createMenuBar() throws Throwable {
		glassSystemMenuBar.set(systemMenu, Application.GetApplication().createMenuBar());
	}

	public MenuBar getMenuBar() throws Throwable {
		return (MenuBar) glassSystemMenuBar.get(systemMenu);
	}

	protected void setMenuBar(MenuBar bar) throws Throwable {
        glassSystemMenuBar.set(systemMenu, bar);
	}

	public void removeMenu(MenuBar glassSystemMenuBar, int index) {
		if (glassSystemMenuBar.getMenus().size() <= index) {
			return;
		}
		clearMenu(glassSystemMenuBar.getMenus().get(index));
		glassSystemMenuBar.remove(index);
	}

	private void clearMenu(Menu menu) {
		for (int i = menu.getItems().size() - 1; i >= 0; i--) {
			Object o = menu.getItems().get(i);

			if (o instanceof MenuItem) {
				((MenuItem) o).setCallback(null);
			} else if (o instanceof Menu) {
				clearMenu((Menu) o);
			}
		}
		menu.setEventHandler(null);
	}
	
}

package de.codecentric.centerdevice.glass;

import com.sun.glass.ui.Application;
import com.sun.glass.ui.Menu;
import com.sun.glass.ui.MenuBar;
import com.sun.glass.ui.MenuItem;
import com.sun.javafx.menu.MenuBase;
import com.sun.javafx.tk.TKSystemMenu;
import com.sun.javafx.tk.Toolkit;

import java.lang.reflect.Field;

import de.codecentric.centerdevice.util.ReflectionUtils;

public class TKSystemMenuAdapter {
    
	private static final String GLASS_SYSTEM_MENU_BAR = "glassSystemMenuBar";
	private static final String INSERT_MENU = "insertMenu";

	private static final int APPLE_MENU_INDEX = 0;

	private TKSystemMenu systemMenu;
	
	private Field glassSystemMenuBar;
	
	public TKSystemMenuAdapter() throws ReflectiveOperationException {
		systemMenu = Toolkit.getToolkit().getSystemMenu();
		glassSystemMenuBar = ReflectionUtils.getAccessibleField(systemMenu, GLASS_SYSTEM_MENU_BAR);
	}

	public void setAppleMenu(MenuBase menu) throws Throwable {
		MenuBar glassSystemMenuBar = getMenuBar();
		if (glassSystemMenuBar == null) {
			createMenuBar();
		} else {
			removeMenu(glassSystemMenuBar, 0);
		}
		insertMenu(menu, APPLE_MENU_INDEX);
	}

	private void insertMenu(MenuBase menu, int index) throws Throwable {
		ReflectionUtils.getAccessibleMethod(systemMenu, INSERT_MENU, Menu.class, MenuBase.class, int.class).invoke(systemMenu, null, menu, index);
	}

	private void createMenuBar() throws Throwable {
		glassSystemMenuBar.set(systemMenu, Application.GetApplication().createMenuBar());
	}

	public MenuBar getMenuBar() throws Throwable {
		return (MenuBar) glassSystemMenuBar.get(systemMenu);
	}

	protected void setMenuBar(MenuBar bar) throws Throwable {
		glassSystemMenuBar.set(systemMenu, bar);
	}

	public void removeMenu(MenuBar glassSystemMenuBar, int index) {
		if (glassSystemMenuBar.getMenus().size() <= index) {
			return;
		}
		clearMenu(glassSystemMenuBar.getMenus().get(index));
		glassSystemMenuBar.remove(index);
	}

	private void clearMenu(Menu menu) {
		for (int i = menu.getItems().size() - 1; i >= 0; i--) {
			Object o = menu.getItems().get(i);

			if (o instanceof MenuItem) {
				((MenuItem) o).setCallback(null);
			} else if (o instanceof Menu) {
				clearMenu((Menu) o);
			}
		}
		menu.setEventHandler(null);
	}
	
}

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