com.liferay.taglib.core.ConditionalTagSupport Maven / Gradle / Ivy
/**
* Copyright (c) 2000-present Liferay, Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation; either version 2.1 of the License, or (at your option)
* any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*/
package com.liferay.taglib.core;
import com.liferay.portal.kernel.util.StringUtil;
import com.liferay.taglib.TagSupport;
import javax.servlet.jsp.JspTagException;
import javax.servlet.jsp.PageContext;
/**
* @author Shuyang Zhou
*/
public abstract class ConditionalTagSupport extends TagSupport {
@Override
public int doStartTag() throws JspTagException {
_result = condition();
if (_var != null) {
pageContext.setAttribute(_var, _result, _scope);
}
if (_result) {
return EVAL_BODY_INCLUDE;
}
return SKIP_BODY;
}
@Override
public void release() {
super.release();
_result = false;
_scope = PageContext.PAGE_SCOPE;
_var = null;
}
public void setScope(String scope) {
String scopeLowerCase = StringUtil.toLowerCase(scope);
if (scopeLowerCase.equals("application")) {
_scope = PageContext.APPLICATION_SCOPE;
}
else if (scopeLowerCase.equals("page")) {
_scope = PageContext.PAGE_SCOPE;
}
else if (scopeLowerCase.equals("request")) {
_scope = PageContext.REQUEST_SCOPE;
}
else if (scopeLowerCase.equals("session")) {
_scope = PageContext.SESSION_SCOPE;
}
}
public void setVar(String var) {
_var = var;
}
protected abstract boolean condition();
private boolean _result;
private int _scope = PageContext.PAGE_SCOPE;
private String _var;
}