Java tutorial
/* * Copyright (C) 2013 David Sowerby * * 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 uk.q3c.krail.core.view.component; import com.google.inject.Inject; import com.vaadin.ui.HorizontalLayout; import com.vaadin.ui.Label; import com.vaadin.ui.Panel; import net.engio.mbassy.listener.Handler; import net.engio.mbassy.listener.Listener; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import uk.q3c.krail.core.eventbus.SubscribeTo; import uk.q3c.krail.core.eventbus.UIBus; import uk.q3c.krail.core.guice.uiscope.UIScoped; import uk.q3c.krail.core.user.notify.ErrorNotificationMessage; import uk.q3c.krail.core.user.notify.InformationNotificationMessage; import uk.q3c.krail.core.user.notify.WarningNotificationMessage; import uk.q3c.krail.i18n.LabelKey; import uk.q3c.krail.i18n.Translate; import uk.q3c.util.ID; import java.util.Optional; @UIScoped @Listener @SubscribeTo(UIBus.class) public class DefaultMessageBar extends Panel implements MessageBar { private static Logger log = LoggerFactory.getLogger(DefaultMessageBar.class); private final Translate translate; private Label label; private HorizontalLayout layout; @Inject protected DefaultMessageBar(Translate translate) { super(); this.translate = translate; build(); } private void build() { layout = new HorizontalLayout(); label = new Label(translate.from(LabelKey.Message_Bar)); label.setImmediate(true); layout.addComponent(label); this.setContent(layout); label.setId(ID.getId(Optional.empty(), this, label)); } @Handler @Override public void errorMessage(ErrorNotificationMessage message) { log.debug("Received error message '{}'", message); String s = translate.from(LabelKey.Error).toUpperCase() + ": " + message.getTranslatedMessage(); label.setValue(s); } @Handler @Override public void warningMessage(WarningNotificationMessage message) { log.debug("Received warning message '{}'", message); String s = translate.from(LabelKey.Warning) + ": " + message.getTranslatedMessage(); label.setValue(s); } @Handler @Override public void informationMessage(InformationNotificationMessage message) { log.debug("Received information message '{}'", message); label.setValue(message.getTranslatedMessage()); } }