| /* |
| * 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.template.instruction; |
| |
| import java.util.Stack; |
| |
| import org.apache.cocoon.template.environment.ParsingContext; |
| import org.apache.cocoon.template.expression.JXTExpression; |
| import org.apache.cocoon.template.script.event.StartElement; |
| import org.xml.sax.Attributes; |
| import org.xml.sax.Locator; |
| import org.xml.sax.SAXException; |
| import org.xml.sax.SAXParseException; |
| |
| /** |
| * @version SVN $Id$ |
| */ |
| public class When extends Instruction { |
| private final JXTExpression test; |
| private When nextChoice; |
| |
| public When(ParsingContext parsingContext, StartElement raw, Attributes attrs, Stack stack) |
| throws SAXException { |
| |
| super(raw); |
| |
| Locator locator = getLocation(); |
| |
| if (stack.size() == 0 || !(stack.peek() instanceof Choose)) { |
| throw new SAXParseException("<when> must be within <choose>", locator, null); |
| } |
| String test = attrs.getValue("test"); |
| if (test != null) { |
| this.test = parsingContext.getStringTemplateParser().compileExpr(test, "when: \"test\": ", locator); |
| // Why is test lenient? |
| this.test.setLenient(Boolean.TRUE); |
| |
| Choose startChoose = (Choose) stack.peek(); |
| if (startChoose.getFirstChoice() != null) { |
| When w = startChoose.getFirstChoice(); |
| while (w.getNextChoice() != null) { |
| w = w.getNextChoice(); |
| } |
| w.setNextChoice(this); |
| } else { |
| startChoose.setFirstChoice(this); |
| } |
| } else { |
| throw new SAXParseException("when: \"test\" is required", locator, null); |
| } |
| } |
| |
| public JXTExpression getTest() { |
| return test; |
| } |
| |
| public void setNextChoice(When nextChoice) { |
| this.nextChoice = nextChoice; |
| } |
| |
| public When getNextChoice() { |
| return nextChoice; |
| } |
| } |