com.feilong.taglib.common.SwitchTag Maven / Gradle / Ivy

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feilong is a suite of core and expanded libraries that include utility classes, http, excel,cvs, io classes, and much much more.

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/*
 * Copyright (C) 2008 feilong
 *
 * 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.feilong.taglib.common;

import com.feilong.taglib.BaseTag;

/**
 * switch标签.
 *
 * @author feilong
 * @since 1.0.1
 */
public class SwitchTag extends BaseTag{

    /** The Constant serialVersionUID. */
    private static final long serialVersionUID = -3192660240397459001L;

    /** 标识case里面是否已经通过,默认没用通过. */
    private boolean           flag             = false;

    /** swith的值. */
    private String            value            = "";

    //---------------------------------------------------------------

    /*
     * 当遇到switch标签时,所有的子标签都不执行.
     * 
     * @see javax.servlet.jsp.tagext.TagSupport#doStartTag()
     */
    /*
     * (non-Javadoc)
     * 
     * @see javax.servlet.jsp.tagext.BodyTagSupport#doStartTag()
     */
    @Override
    public int doStartTag(){
        // 不可少
        flag = false;
        return EVAL_BODY_INCLUDE;
    }

    //---------------------------------------------------------------

    /**
     * 该方法有子标签调用,表示是否可以执行自身的标签..
     *
     * @return 该方法有子标签调用,表示是否可以执行自身的标签.
     */
    public synchronized boolean isExecuteTag(){
        return flag;
    }

    /**
     * 标记执行了.
     */
    public synchronized void setExecuteTag(){
        flag = true;
    }

    /*
     * 销毁到该方法.
     * 
     * @see javax.servlet.jsp.tagext.TagSupport#release()
     */
    /*
     * (non-Javadoc)
     * 
     * @see javax.servlet.jsp.tagext.BodyTagSupport#release()
     */
    @Override
    public void release(){
        flag = false;
    }

    /**
     * switch的值.
     *
     * @param value
     *            the value to set
     */
    public void setValue(String value){
        this.value = value;
    }

    /**
     * 此处不可少 子标签调用.
     *
     * @return the value
     */
    public String getValue(){
        return value;
    }
}