| /******************************************************************************* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.ofbiz.widget.model; |
| |
| import java.util.Map; |
| |
| import org.apache.ofbiz.base.util.UtilGenerics; |
| import org.apache.ofbiz.base.util.string.FlexibleStringExpander; |
| import org.apache.ofbiz.widget.model.AbstractModelCondition; |
| import org.apache.ofbiz.widget.model.AbstractModelCondition.DefaultConditionFactory; |
| import org.apache.ofbiz.widget.model.ModelCondition; |
| import org.apache.ofbiz.widget.model.ModelConditionFactory; |
| import org.apache.ofbiz.widget.model.ModelConditionVisitor; |
| import org.apache.ofbiz.widget.model.ModelWidget; |
| import org.w3c.dom.Element; |
| |
| /** |
| * Models the <condition> element. |
| * |
| * @see <code>widget-screen.xsd</code> |
| */ |
| @SuppressWarnings("serial") |
| public final class ModelScreenCondition { |
| |
| /* |
| * ----------------------------------------------------------------------- * |
| * DEVELOPERS PLEASE READ |
| * ----------------------------------------------------------------------- * |
| * |
| * This model is intended to be a read-only data structure that represents |
| * an XML element. Outside of object construction, the class should not |
| * have any behaviors. |
| * |
| * Instances of this class will be shared by multiple threads - therefore |
| * it is immutable. DO NOT CHANGE THE OBJECT'S STATE AT RUN TIME! |
| * |
| */ |
| |
| public static final String module = ModelScreenCondition.class.getName(); |
| public static final ModelConditionFactory SCREEN_CONDITION_FACTORY = new ScreenConditionFactory(); |
| |
| public static class IfEmptySection extends AbstractModelCondition { |
| private final FlexibleStringExpander sectionExdr; |
| |
| private IfEmptySection(ModelConditionFactory factory, ModelWidget modelWidget, Element condElement) { |
| super (factory, modelWidget, condElement); |
| this.sectionExdr = FlexibleStringExpander.getInstance(condElement.getAttribute("section-name")); |
| } |
| |
| @Override |
| public void accept(ModelConditionVisitor visitor) throws Exception { |
| visitor.visit(this); |
| } |
| |
| @Override |
| public boolean eval(Map<String, Object> context) { |
| Map<String, Object> sectionsMap = UtilGenerics.toMap(context.get("sections")); |
| return !sectionsMap.containsKey(this.sectionExdr.expandString(context)); |
| } |
| |
| public FlexibleStringExpander getSectionExdr() { |
| return sectionExdr; |
| } |
| } |
| |
| private static class ScreenConditionFactory extends DefaultConditionFactory { |
| |
| @Override |
| public ModelCondition newInstance(ModelWidget modelWidget, Element conditionElement) { |
| if (conditionElement == null) { |
| return DefaultConditionFactory.TRUE; |
| } |
| if ("if-empty-section".equals(conditionElement.getNodeName())) { |
| return new IfEmptySection(this, modelWidget, conditionElement); |
| } else { |
| return super.newInstance(this, modelWidget,conditionElement); |
| } |
| } |
| } |
| } |