Java tutorial
/* * Copyright (c) 2011-2015 Marat Gubaidullin. * * This file is part of HYBRIDBPM. * * 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.hybridbpm.ui.component; import com.hybridbpm.model.FieldModel; import com.vaadin.data.fieldgroup.FieldGroup; import com.vaadin.ui.Button; import com.vaadin.ui.Component; import com.vaadin.ui.CustomField; import com.vaadin.ui.VerticalLayout; import java.util.ArrayList; import java.util.List; import java.util.logging.Level; import java.util.logging.Logger; /** * * @author Marat Gubaidullin */ public class ParametersFieldGroup extends CustomField<List> implements Button.ClickListener { public static final Logger logger = Logger.getLogger(ParametersFieldGroup.class.getCanonicalName()); private final VerticalLayout form = new VerticalLayout(); public ParametersFieldGroup() { form.setSpacing(true); form.setMargin(false); form.setWidth(100, Unit.PERCENTAGE); } @Override public void buttonClick(Button.ClickEvent event) { } @Override protected List getInternalValue() { List<FieldModel> result = new ArrayList<>(); for (Component comp : form) { if (comp instanceof ParameterForm) { ParameterForm parameterForm = (ParameterForm) comp; try { parameterForm.commit(); } catch (FieldGroup.CommitException ex) { logger.log(Level.SEVERE, ex.getMessage(), ex); } result.add(parameterForm.getFieldModel()); } } return result; } @Override protected void setInternalValue(List value) { form.removeAllComponents(); if (value != null) { List<FieldModel> models = value; for (FieldModel fieldModel : models) { ParameterForm parameterForm = new ParameterForm(fieldModel, ParameterForm.TYPE.INPUT, null, null); form.addComponent(parameterForm); } } } @Override protected Component initContent() { return form; } @Override public Class<? extends List> getType() { return List.class; } }