groovy.text.markup.TagLibAdapter.groovy Maven / Gradle / Ivy
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Groovy: A powerful, dynamic language for the JVM
/*
* 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 groovy.text.markup
/**
* Adapts Grails taglibs for use in the template engine. An adapter may be created like this:
*
*
* def model = [:]
* def tpl = template.make(model)
* model.g = new TagLibAdapter(tpl)
* model.g.registerTagLib(SimpleTagLib)
*
*
* where SimpleTagLib is:
*
*
* class SimpleTagLib {
* def emoticon = { attrs, body ->
* out << body() << (attrs.happy == 'true' ? " :-)" : " :-(")
* }
* }
*
*
* Then it can be used inside a template like this:
*
*
* g.emoticon(happy:'true') { 'Hi John' }
*
*
* Performance-wise, it would be better to reimplement the taglib, but this makes it easier to reuse
* exisiting code.
*
* @author Cédric Champeau
*/
class TagLibAdapter {
private final BaseTemplate template
private final List