| /* |
| * 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.cocoon.forms.formmodel.algorithms; |
| |
| import java.util.StringTokenizer; |
| |
| import org.apache.avalon.framework.context.Context; |
| import org.apache.avalon.framework.context.ContextException; |
| import org.apache.avalon.framework.context.Contextualizable; |
| import org.apache.avalon.framework.logger.LogEnabled; |
| import org.apache.avalon.framework.logger.Logger; |
| import org.apache.avalon.framework.service.ServiceException; |
| import org.apache.avalon.framework.service.ServiceManager; |
| import org.apache.avalon.framework.service.Serviceable; |
| import org.apache.cocoon.components.LifecycleHelper; |
| import org.apache.cocoon.forms.formmodel.CalculatedFieldAlgorithm; |
| import org.apache.cocoon.forms.formmodel.CalculatedFieldAlgorithmBuilder; |
| import org.apache.cocoon.forms.util.DomHelper; |
| import org.w3c.dom.Element; |
| |
| /** |
| * Abstract builder for {@link org.apache.cocoon.forms.formmodel.algorithms.AbstractBaseAlgorithm} |
| * subclasses. |
| * |
| * <p> |
| * This class parses the default triggers attribute, containing a comma separated list of widget paths |
| * as defined in {@link org.apache.cocoon.forms.util.WidgetFinder}. It also calls the LifecycleHelper |
| * so that algorithms gets their logger and context. |
| * </p> |
| * @version $Id$ |
| */ |
| public abstract class AbstractBaseAlgorithmBuilder implements CalculatedFieldAlgorithmBuilder, LogEnabled, Contextualizable, Serviceable { |
| |
| private Logger logger; |
| protected Context context; |
| private ServiceManager manager; |
| |
| protected void setup(Element algorithmElement, AbstractBaseAlgorithm algorithm) throws Exception { |
| setupComponent(algorithm); |
| setupTriggers(algorithmElement, algorithm); |
| } |
| |
| protected void setupTriggers(Element algorithmElement, AbstractBaseAlgorithm algorithm) throws Exception { |
| String fields = DomHelper.getAttribute(algorithmElement, "triggers", null); |
| if (fields != null) setupTriggers(fields, algorithm); |
| } |
| |
| protected void setupTriggers(String fields, AbstractBaseAlgorithm algorithm) { |
| algorithm.clearTriggers(); |
| StringTokenizer stok = new StringTokenizer(fields, ", "); |
| while (stok.hasMoreTokens()) { |
| String fname = stok.nextToken(); |
| algorithm.addTrigger(fname); |
| } |
| } |
| |
| public void enableLogging(Logger logger) { |
| this.logger = logger; |
| } |
| |
| protected Logger getLogger() { |
| return this.logger; |
| } |
| |
| public void contextualize(Context context) throws ContextException { |
| this.context = context; |
| } |
| |
| public void service(ServiceManager manager) throws ServiceException { |
| this.manager = manager; |
| } |
| |
| public void setupComponent(CalculatedFieldAlgorithm algorithm) throws Exception { |
| LifecycleHelper.setupComponent(algorithm, logger, context, manager, null); |
| } |
| } |