Java tutorial
/* * Copyright 2013 JBoss Inc * * 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 org.artificer.ui.client.local.pages.ontologies; import javax.annotation.PostConstruct; import javax.enterprise.context.Dependent; import javax.inject.Inject; import org.artificer.ui.client.local.ClientMessages; import org.artificer.ui.client.local.services.NotificationService; import org.artificer.ui.client.local.services.OntologyServiceCaller; import org.artificer.ui.client.local.services.callback.IServiceInvocationHandler; import org.artificer.ui.client.shared.beans.NotificationBean; import org.artificer.ui.client.shared.beans.OntologySummaryBean; import org.jboss.errai.ui.shared.api.annotations.DataField; import org.jboss.errai.ui.shared.api.annotations.Templated; import com.google.gwt.core.client.GWT; import com.google.gwt.dom.client.Element; import com.google.gwt.dom.client.EventTarget; import com.google.gwt.event.dom.client.ClickEvent; import com.google.gwt.event.dom.client.ClickHandler; import com.google.gwt.event.dom.client.HasClickHandlers; import com.google.gwt.event.logical.shared.ValueChangeEvent; import com.google.gwt.event.logical.shared.ValueChangeHandler; import com.google.gwt.event.shared.HandlerRegistration; import com.google.gwt.user.client.DOM; import com.google.gwt.user.client.Event; import com.google.gwt.user.client.Window; import com.google.gwt.user.client.ui.Button; import com.google.gwt.user.client.ui.Composite; import com.google.gwt.user.client.ui.FlowPanel; import com.google.gwt.user.client.ui.HasValue; import com.google.gwt.user.client.ui.InlineLabel; /** * A single item in the Ontology summary panel * * @author Brett meyer */ @Templated("/org/artificer/ui/client/local/site/ontologies.html#sramp-ontology-item") @Dependent public class OntologySummaryPanelItem extends Composite implements HasValue<OntologySummaryBean>, HasClickHandlers { private OntologySummaryBean value; @Inject ClientMessages i18n; @Inject OntologyServiceCaller ontologyService; @Inject NotificationService notificationService; @Inject @DataField InlineLabel label; @Inject @DataField FlowPanel actions; @Inject Button downloadButton; @Inject Button deleteButton; /** * Constructor. */ public OntologySummaryPanelItem() { } /** * Called after consrtuction. */ @PostConstruct protected void postConstruct() { label.setText(""); sinkEvents(Event.ONCLICK); downloadButton.setText(i18n.format("ontology-editor.download")); downloadButton.addStyleName("btn-mini"); downloadButton.addStyleName("btn"); downloadButton.addClickHandler(new ClickHandler() { @Override public void onClick(ClickEvent event) { onDownload(); } }); deleteButton.setText(i18n.format("ontology-editor.delete")); deleteButton.addStyleName("btn-mini"); deleteButton.addStyleName("btn"); deleteButton.addClickHandler(new ClickHandler() { @Override public void onClick(ClickEvent event) { onDelete(); } }); } /** * @see com.google.gwt.user.client.ui.Composite#onBrowserEvent(com.google.gwt.user.client.Event) */ @Override public void onBrowserEvent(Event event) { if (DOM.eventGetType(event) == Event.ONCLICK) { EventTarget target = event.getEventTarget(); Element elem = (Element) target.cast(); if (elem.getNodeName().toLowerCase().equals("button")) { // an action button was clicked event.preventDefault(); } else { showActions(); super.onBrowserEvent(event); } } } /** * Called when the user clicks on this item */ public void showActions() { actions.add(downloadButton); actions.add(deleteButton); } /** * Called when a different item is selected in the parent list. */ public void hideActions() { actions.clear(); } protected void onDownload() { String contentUrl = GWT.getModuleBaseURL() + "services/ontologyDownload?uuid=" + value.getUuid(); Window.open(contentUrl, "_blank", "enabled"); } /** * Called when the user clicks the Delete action. */ protected void onDelete() { final NotificationBean notificationBean = notificationService.startProgressNotification( i18n.format("ontology-deleting.title"), i18n.format("ontology-deleting.message")); ontologyService.delete(getValue().getUuid(), new IServiceInvocationHandler<Void>() { @Override public void onReturn(Void data) { notificationService.completeProgressNotification(notificationBean.getUuid(), i18n.format("ontology-deleted.title"), i18n.format("ontology-deleted.message", getValue().getId())); ValueChangeEvent.fire(OntologySummaryPanelItem.this, null); } @Override public void onError(Throwable error) { notificationService.completeProgressNotification(notificationBean.getUuid(), i18n.format("ontology-deleted-error.title"), error); } }); } /** * @see com.google.gwt.event.logical.shared.HasValueChangeHandlers#addValueChangeHandler(com.google.gwt.event.logical.shared.ValueChangeHandler) */ @Override public HandlerRegistration addValueChangeHandler(ValueChangeHandler<OntologySummaryBean> handler) { return addHandler(handler, ValueChangeEvent.getType()); } /** * @see com.google.gwt.event.dom.client.HasClickHandlers#addClickHandler(com.google.gwt.event.dom.client.ClickHandler) */ @Override public HandlerRegistration addClickHandler(ClickHandler handler) { return addDomHandler(handler, ClickEvent.getType()); } /** * @see com.google.gwt.user.client.ui.HasValue#getValue() */ @Override public OntologySummaryBean getValue() { return value; } /** * @see com.google.gwt.user.client.ui.HasValue#setValue(java.lang.Object) */ @Override public void setValue(OntologySummaryBean value) { setValue(value, false); } /** * @see com.google.gwt.user.client.ui.HasValue#setValue(java.lang.Object, boolean) */ @Override public void setValue(OntologySummaryBean value, boolean fireEvents) { this.value = value; if (fireEvents) { ValueChangeEvent.fire(this, value); } this.label.setText(createLabel(value)); } /** * Creates the label for the item. * @param value */ private static String createLabel(OntologySummaryBean bean) { String label = bean.getBase(); if (bean.getLabel() != null && bean.getLabel().trim().length() > 0) { label += " (" + bean.getLabel().trim() + ")"; } return label; } }