package probieren.julia.layout;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.ExpandBar;
import org.eclipse.swt.widgets.ExpandItem;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;

public class MyLayoutExpandBar {
	public static void main (String [] args) {
		final Display display = new Display ();
		Shell shell = new Shell (display);
		shell.setLayout (new FillLayout());

		final Composite parent = new Composite (shell, SWT.BORDER);
		parent.setLayout(new GridLayout());
		
		Composite comp = new Composite(parent, SWT.BORDER);
		comp.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
		
		ExpandBar expandBar = new ExpandBar (parent, SWT.V_SCROLL);
		expandBar.setLayoutData(new GridData(SWT.FILL, SWT.END, true, false));

		ExpandItem item = new ExpandItem (expandBar, SWT.NONE);
		item.setText("Expand Item");
		item.setHeight(200);
		item.setExpanded(true);

		/* Listener */
		expandBar.addListener(SWT.Expand, new Listener() {
			
			@Override
			public void handleEvent(Event event) {
				display.asyncExec(new Runnable() {
					
					@Override
					public void run() {
						parent.layout();
					}
				});
			}
		});
		expandBar.addListener(SWT.Collapse, new Listener() {
			
			@Override
			public void handleEvent(Event event) {
				display.asyncExec(new Runnable() {
					
					@Override
					public void run() {
						parent.layout();
					}
				});
			}
		});
		shell.setText("Shell");
		shell.setSize(300, 300);
		shell.open ();

		while (!shell.isDisposed ()) {
			if (!display.readAndDispatch ())
				display.sleep ();
		}
		display.dispose ();
	}
}