package ssq;

import org.eclipse.swt.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;

import sun.awt.windows.WEmbeddedFrame;

public class AWT_SWT_SingleLoop {
	
	private static class EFrame extends WEmbeddedFrame implements Listener {
	
		private Composite parent;
		private String name;
	
		EFrame(Composite parent, String name) {
			super(parent.handle);
			this.parent = parent;
			this.name = name;
			parent.addListener(SWT.Resize, this);
			parent.addListener(SWT.Move, this);
			parent.addListener(SWT.Dispose, this);
			parent.getShell().addListener(SWT.Move, this);
			setFrameBounds();
			setCursor(java.awt.Cursor.getDefaultCursor());
			addNotify();
			validate();
		}
	
		public void handleEvent(Event e) {
			if (e.type == SWT.Dispose) {
				parent.removeListener(SWT.Resize, this);
				parent.removeListener(SWT.Move, this);
				parent.removeListener(SWT.Dispose, this);
				parent.getShell().removeListener(SWT.Move, this);
			}
			else {
				setFrameBounds();
			}
		}
        	
		private void setFrameBounds() {
			org.eclipse.swt.graphics.Rectangle rc = parent.getClientArea();
			setBounds(0, 0, rc.width, rc.height);
			validate();
		}
    
		public void paint(java.awt.Graphics g) {
			super.paint(g);
			sun.awt.windows.WGlobalCursorManager.getCursorManager().updateCursorImmediately();
		}
	}
	
	public static class AWTWatchDog extends Thread {
		Display display;
		java.awt.EventQueue queue;
		
		public AWTWatchDog(Display display, java.awt.EventQueue queue) {
			setName("AWT-WatchDog");
			this.queue = queue;
			this.display = display;
			start();
		}
		public void run() {
			while (true) {
				try {
					synchronized (queue) {
						sun.awt.SunToolkit.flushPendingEvents();
						display.asyncExec(new Runnable() {
							public void run() {
								flushQueue(queue);
							}
						});
						queue.wait();
					}
				} catch (Throwable x) {
					x.printStackTrace();
				}
			}
		}
	}
    
static boolean flushQueue(java.awt.EventQueue queue) {
	if (!java.awt.EventQueue.isDispatchThread()) throw new Error("Must be dispatch thread");
	boolean result = false;
	while (queue.peekEvent() != null) {
		result = true;
		try {
			java.awt.AWTEvent e = queue.getNextEvent();
//			dispatchEvent(e);
			Object src = e.getSource();
			if (e instanceof java.awt.ActiveEvent) {
				((java.awt.ActiveEvent)e).dispatch();
			}
			else if (src instanceof java.awt.Component) {
				((java.awt.Component)src).dispatchEvent(e);
			}
			else if (src instanceof java.awt.MenuComponent) {
				((java.awt.MenuComponent)src).dispatchEvent(e);
			}
			else {
				throw new Error("Unable to dispatch event: " + e);
			}
		} catch (InterruptedException ex) {
			ex.printStackTrace();
		}
	}
	return result;
}
    
public static void main(String[] args) throws Exception {
	System.out.println(System.getProperty("java.version"));
	final java.awt.EventQueue queue = java.awt.Toolkit.getDefaultToolkit().getSystemEventQueue();
	java.awt.EventQueue.invokeAndWait(new Runnable() {
		public void run() {
			final Display display = new Display();
			new AWTWatchDog(display, queue);
			final Shell shell = new Shell(display);
			shell.setLayout(new FillLayout());
			
			Menu bar = new Menu(shell, SWT.BAR);
			shell.setMenuBar(bar);			
			MenuItem item = new MenuItem(bar, SWT.CASCADE);
			item.setText("File");
			Menu menu = new Menu(shell, SWT.DROP_DOWN);
			item.setMenu(menu);
			item = new MenuItem(menu, SWT.NONE);
			item.setText("Open");
			item.addListener(SWT.Selection, new Listener() {
				public void handleEvent(Event e) {
					System.out.println("menu open selected");
				}
			});

			Composite composite1 = new Composite(shell, SWT.BORDER);
			composite1.setLayout(new GridLayout());
			Button swtButton = new Button(composite1, SWT.PUSH);
			swtButton.setText("SWT Button");
			Text text = new Text(composite1, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL | SWT.BORDER);
			text.setLayoutData(new GridData(GridData.FILL_BOTH));
			Combo combo = new Combo(composite1, SWT.DROP_DOWN);
			
			Composite composite2 = new Composite(shell, SWT.BORDER);
			java.awt.Frame frame = new EFrame(composite2, "GREAT");
			
			java.awt.Button button = new java.awt.Button("AWT Button");
			frame.add(button, java.awt.BorderLayout.NORTH);
			button.addMouseListener(new java.awt.event.MouseAdapter() {
				public void mousePressed(java.awt.event.MouseEvent e) {
					System.out.println("mouse pressed");
				}
			});
			
//			java.awt.TextField field = new java.awt.TextField("Field");
			javax.swing.JTextField field = new javax.swing.JTextField("Swing Field");
			frame.add(field, java.awt.BorderLayout.SOUTH);
			java.awt.TextArea area = new java.awt.TextArea("Area");
			frame.add(area, java.awt.BorderLayout.CENTER);
			frame.setVisible(true);
			
			
			shell.open();
			while (!shell.isDisposed()) {
				if (!display.readAndDispatch()) display.sleep();
			}
		}
	});
}

}