/*
* Copyright 2000-2014 Vaadin Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.vaadin.tests.minitutorials.v7a1;
import com.vaadin.server.UIClassSelectionEvent;
import com.vaadin.server.UICreateEvent;
import com.vaadin.server.UIProvider;
import com.vaadin.server.VaadinRequest;
import com.vaadin.server.WebBrowser;
import com.vaadin.ui.Label;
import com.vaadin.ui.UI;
/**
* Mini tutorial code for
* https://vaadin.com/wiki/-/wiki/Main/Creating%20an%20application
* %20with%20different%20features%20for%20different%20clients
*
* @author Vaadin Ltd
* @since 7.0.0
*/
public class DifferentFeaturesForDifferentClients extends UIProvider {
@Override
public Class<? extends UI> getUIClass(UIClassSelectionEvent event) {
// could also use browser version etc.
if (event.getRequest().getHeader("user-agent").contains("mobile")) {
return TouchUI.class;
} else {
return DefaultUI.class;
}
}
// Must override as default implementation isn't allowed to
// instantiate our non-public classes
@Override
public UI createInstance(UICreateEvent event) {
try {
return event.getUIClass().newInstance();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}
class DefaultUI extends UI {
@Override
protected void init(VaadinRequest request) {
setContent(new Label("This browser does not support touch events"));
}
}
class TouchUI extends UI {
@Override
protected void init(VaadinRequest request) {
WebBrowser webBrowser = getPage().getWebBrowser();
String screenSize = "" + webBrowser.getScreenWidth() + "x"
+ webBrowser.getScreenHeight();
setContent(new Label("Using a touch enabled device with screen size"
+ screenSize));
}
}