/*
* Copyright 2004-2005 the original author or authors.
*
* 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.grails.web.pages.tags;
import grails.util.GrailsStringUtils;
import org.grails.web.taglib.exceptions.GrailsTagException;
/**
* @author Graeme Rocher
*/
public class GroovyWhileTag extends GroovySyntaxTag {
public static final String TAG_NAME = "while";
private static final String ATTRIBUTE_TEST = "test";
public void doStartTag() {
String test = attributes.get(ATTRIBUTE_TEST);
if (GrailsStringUtils.isBlank(test)) {
throw new GrailsTagException("Tag [" + TAG_NAME + "] missing required attribute [" +
ATTRIBUTE_TEST + "]", parser.getPageName(), parser.getCurrentOutputLineNumber());
}
out.print("while(");
out.print(test);
out.println(") {");
}
public void doEndTag() {
out.println("}");
}
public String getName() {
return TAG_NAME;
}
@Override
public boolean isKeepPrecedingWhiteSpace() {
return true;
}
@Override
public boolean isAllowPrecedingContent() {
return true;
}
}