BrowseMenu.java

package com.kartoflane.superluminal2.ui;

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.swt.widgets.MenuItem;

public class BrowseMenu extends Menu implements SelectionListener, Listener {

	private final MenuItem mntmSystem;
	private final MenuItem mntmDatabase;

	public BrowseMenu(Control parent) {
		super(parent);

		mntmSystem = new MenuItem(this, SWT.NONE);
		mntmSystem.setText("System");
		mntmDatabase = new MenuItem(this, SWT.NONE);
		mntmDatabase.setText("Database");
	}

	public void addTo(Control c) {
		c.addListener(SWT.Selection, this);
	}

	public void removeFrom(Control c) {
		c.removeListener(SWT.Selection, this);
	}

	@Override
	protected void checkSubclass() {
	}

	public MenuItem getSystemItem() {
		return mntmSystem;
	}

	public MenuItem getDataItem() {
		return mntmDatabase;
	}

	public void addSystemListener(SelectionListener listener) {
		mntmSystem.addSelectionListener(listener);
	}

	public void removeSystemListener(SelectionListener listener) {
		mntmSystem.removeSelectionListener(listener);
	}

	public void addDataListener(SelectionListener listener) {
		mntmDatabase.addSelectionListener(listener);
	}

	public void removeDataListener(SelectionListener listener) {
		mntmDatabase.removeSelectionListener(listener);
	}

	public void handleEvent(Event e) {
		if (e.type == SWT.Selection) {
			widgetSelected(new SelectionEvent(e));
		}
	}

	public void widgetSelected(SelectionEvent e) {
		if (e.getSource() instanceof Control == true) {
			Control c = (Control) e.getSource();
			setLocation(c.toDisplay(0, c.getSize().y));
			setVisible(true);
		}
	}

	public void widgetDefaultSelected(SelectionEvent e) {
	}
}