Java tutorial
/* * Copyright 2014-2016 CyberVision, 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.kaaproject.kaa.server.admin.client.mvp.view.event; import com.google.gwt.event.logical.shared.ValueChangeEvent; import com.google.gwt.event.logical.shared.ValueChangeHandler; import com.google.gwt.user.client.ui.Label; import com.google.gwt.user.client.ui.ValueListBox; import org.kaaproject.kaa.server.admin.client.mvp.view.EventClassView; import org.kaaproject.kaa.server.admin.client.mvp.view.schema.BaseCtlSchemaViewImpl; import org.kaaproject.kaa.server.admin.client.util.Utils; public class EventClassViewImpl extends BaseCtlSchemaViewImpl implements EventClassView { private ValueListBox<String> eventClassTypeName; public EventClassViewImpl(boolean create) { super(create); } @Override protected void initDetailsTable() { super.initDetailsTable(); this.eventClassTypeName = new ValueListBox<String>(); this.eventClassTypeName.addValueChangeHandler(new ValueChangeHandler<String>() { @Override public void onValueChange(ValueChangeEvent<String> event) { EventClassViewImpl.this.fireChanged(); } }); this.eventClassTypeName.setWidth("100%"); Label label = new Label("Class type"); label.addStyleName(this.avroUiStyle.requiredField()); detailsTable.setWidget(4, 0, label); this.detailsTable.setWidget(4, 1, this.eventClassTypeName); } @Override protected String getCreateTitle() { return Utils.constants.addEventClass(); } @Override protected String getViewTitle() { return Utils.constants.eventClass(); } @Override protected String getSubTitle() { return Utils.constants.eventClassDetails(); } @Override public ValueListBox<String> getEventClassTypes() { return eventClassTypeName; } @Override protected boolean validate() { boolean result = super.validate(); result &= eventClassTypeName.getValue().length() > 0; return result; } @Override protected void updateSaveButton(boolean enabled, boolean invalid) { if (create == true) { super.updateSaveButton(enabled, invalid); } else { getSaveButtonWidget().setEnabled(false); } } }