contenttag.java

来自「Tree taglib,生成树的标签库」· Java 代码 · 共 60 行

/*
    Copyright 2004 Jenkov Development

    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 com.jenkov.prizetags.template.impl;

import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.BodyTagSupport;
import javax.servlet.jsp.tagext.Tag;
import javax.servlet.jsp.tagext.BodyContent;
import java.io.IOException;

/**
 * @author Jakob Jenkov
 *         Copyright 2004 Jenkov Development
 */
public class ContentTag extends BodyTagSupport{
    protected String name     = null;

    public int doStartTag() throws JspException {
        return EVAL_BODY_BUFFERED;
    }

    public int doAfterBody() throws JspException {
        Tag tag = getParent();
        if(! (tag instanceof TemplateTag)){
            throw new JspException("the <content .../> tag must be nested inside a <template ...> tag");
        }

        BodyContent content = getBodyContent();

        TemplateTag templateTag = (TemplateTag) tag;
        templateTag.getTemplate().setInclude(getName(), content.getString());

        return EVAL_PAGE;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}