org.eclipse.osbp.vaadin.addons.keyevents/Sample/org/eclipse/osbp/vaadin/addons/keyevents/sample/KeyEventsSample.java

/**
 *                                                                            
 * Copyright (c) 2011, 2016 - Loetz GmbH&Co.KG (69115 Heidelberg, Germany)
 *                                                                            
 * All rights reserved. This program and the accompanying materials           
 * are made available under the terms of the Eclipse Public License 2.0        
 * which accompanies this distribution, and is available at                  
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0                                 
 *                                                                            
 * Contributors:   
 * Florian Pirchner <florian.pirchner@gmail.com> - Initial implementation
 */
package org.eclipse.osbp.vaadin.addons.keyevents.sample;

import javax.servlet.annotation.WebServlet;

import org.eclipse.osbp.vaadin.addons.keyevents.KeyEventExtension;

import com.vaadin.annotations.Push;
import com.vaadin.annotations.Theme;
import com.vaadin.annotations.VaadinServletConfiguration;
import com.vaadin.server.VaadinRequest;
import com.vaadin.server.VaadinServlet;
import com.vaadin.ui.Panel;
import com.vaadin.ui.TextField;
import com.vaadin.ui.UI;

@SuppressWarnings("serial")
@Theme("valo")
// @Push(transport = Transport.LONG_POLLING, value = PushMode.AUTOMATIC)
@Push
public class KeyEventsSample extends UI {

	@WebServlet(value = "/*", asyncSupported = true)
	@VaadinServletConfiguration(productionMode = false, ui = KeyEventsSample.class, widgetset = "org.eclipse.osbp.vaadin.addons.keyevents.KeyEventsWidgetset")
	public static class Servlet extends VaadinServlet {
		String a = "";
	}

	@Override
	protected void init(VaadinRequest request) {

		Panel p1 = new Panel();
		setContent(p1);

		Panel p2 = new Panel();
		p1.setContent(p2);

		TextField t = new TextField("text");
		p2.setContent(t);

		KeyEventExtension ext = KeyEventExtension.addTo(p2);
		ext.setCallback(e -> {
			if(e.charCode > 95 && e.charCode < 106 ) {
				e.charCode -= 48;
			} else if(!e.shiftKeyDown && e.charCode > 57 && e.charCode < 91) {
				e.charCode += 32; 
			} else if(e.shiftKeyDown && e.charCode > 47 && e.charCode < 58) {
				e.charCode -= 16; 
			} else if(e.charCode == 192) {	// ö
				if(e.shiftKeyDown) {
					e.charCode = 0xD6;
				} else {
					e.charCode = 0xF6;
				}
			} else if(e.charCode == 222) {	// ä
				if(e.shiftKeyDown) {
					e.charCode = 0xC4;
				} else {
					e.charCode = 0xE4;
				}
			} else if(e.charCode == 186) {	// ü
				if(e.shiftKeyDown) {
					e.charCode = 0xDC;
				} else {
					e.charCode = 0xFC;
				}
			} else if(e.charCode == 219) {	// ß
				if(e.shiftKeyDown) {
					e.charCode = 63;
				} else {
					e.charCode = 0xDF;
				}
			}
			t.setValue(t.getValue() + (char)e.charCode);
			return;
//			t.setValue(" "+e.charCode+" "+(char)e.charCode);
		});

		this.focus();
	}
}