/*
* $Id: ELPresentTag.java 471754 2006-11-06 14:55:09Z husted $
*
* 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 org.apache.strutsel.taglib.logic;
import org.apache.struts.taglib.logic.PresentTag;
import org.apache.strutsel.taglib.utils.EvalHelper;
import javax.servlet.jsp.JspException;
/**
* Evaluates the nested body content of this tag if the specified value is
* present for this request. <p> This class is a subclass of the class
* <code>org.apache.struts.taglib.logic.PresentTag</code> which provides most
* of the described functionality. This subclass allows all attribute values
* to be specified as expressions utilizing the JavaServer Pages Standard
* Library expression language.
*
* @version $Rev: 471754 $
*/
public class ELPresentTag extends PresentTag {
/**
* Instance variable mapped to "cookie" tag attribute. (Mapping set in
* associated BeanInfo class.)
*/
private String cookieExpr;
/**
* Instance variable mapped to "header" tag attribute. (Mapping set in
* associated BeanInfo class.)
*/
private String headerExpr;
/**
* Instance variable mapped to "name" tag attribute. (Mapping set in
* associated BeanInfo class.)
*/
private String nameExpr;
/**
* Instance variable mapped to "parameter" tag attribute. (Mapping set in
* associated BeanInfo class.)
*/
private String parameterExpr;
/**
* Instance variable mapped to "property" tag attribute. (Mapping set in
* associated BeanInfo class.)
*/
private String propertyExpr;
/**
* Instance variable mapped to "role" tag attribute. (Mapping set in
* associated BeanInfo class.)
*/
private String roleExpr;
/**
* Instance variable mapped to "scope" tag attribute. (Mapping set in
* associated BeanInfo class.)
*/
private String scopeExpr;
/**
* Instance variable mapped to "user" tag attribute. (Mapping set in
* associated BeanInfo class.)
*/
private String userExpr;
/**
* Getter method for "cookie" tag attribute. (Mapping set in associated
* BeanInfo class.)
*/
public String getCookieExpr() {
return (cookieExpr);
}
/**
* Getter method for "header" tag attribute. (Mapping set in associated
* BeanInfo class.)
*/
public String getHeaderExpr() {
return (headerExpr);
}
/**
* Getter method for "name" tag attribute. (Mapping set in associated
* BeanInfo class.)
*/
public String getNameExpr() {
return (nameExpr);
}
/**
* Getter method for "parameter" tag attribute. (Mapping set in associated
* BeanInfo class.)
*/
public String getParameterExpr() {
return (parameterExpr);
}
/**
* Getter method for "property" tag attribute. (Mapping set in associated
* BeanInfo class.)
*/
public String getPropertyExpr() {
return (propertyExpr);
}
/**
* Getter method for "role" tag attribute. (Mapping set in associated
* BeanInfo class.)
*/
public String getRoleExpr() {
return (roleExpr);
}
/**
* Getter method for "scope" tag attribute. (Mapping set in associated
* BeanInfo class.)
*/
public String getScopeExpr() {
return (scopeExpr);
}
/**
* Getter method for "user" tag attribute. (Mapping set in associated
* BeanInfo class.)
*/
public String getUserExpr() {
return (userExpr);
}
/**
* Setter method for "cookie" tag attribute. (Mapping set in associated
* BeanInfo class.)
*/
public void setCookieExpr(String cookieExpr) {
this.cookieExpr = cookieExpr;
}
/**
* Setter method for "header" tag attribute. (Mapping set in associated
* BeanInfo class.)
*/
public void setHeaderExpr(String headerExpr) {
this.headerExpr = headerExpr;
}
/**
* Setter method for "name" tag attribute. (Mapping set in associated
* BeanInfo class.)
*/
public void setNameExpr(String nameExpr) {
this.nameExpr = nameExpr;
}
/**
* Setter method for "parameter" tag attribute. (Mapping set in associated
* BeanInfo class.)
*/
public void setParameterExpr(String parameterExpr) {
this.parameterExpr = parameterExpr;
}
/**
* Setter method for "property" tag attribute. (Mapping set in associated
* BeanInfo class.)
*/
public void setPropertyExpr(String propertyExpr) {
this.propertyExpr = propertyExpr;
}
/**
* Setter method for "role" tag attribute. (Mapping set in associated
* BeanInfo class.)
*/
public void setRoleExpr(String roleExpr) {
this.roleExpr = roleExpr;
}
/**
* Setter method for "scope" tag attribute. (Mapping set in associated
* BeanInfo class.)
*/
public void setScopeExpr(String scopeExpr) {
this.scopeExpr = scopeExpr;
}
/**
* Setter method for "user" tag attribute. (Mapping set in associated
* BeanInfo class.)
*/
public void setUserExpr(String userExpr) {
this.userExpr = userExpr;
}
/**
* Resets attribute values for tag reuse.
*/
public void release() {
super.release();
setCookieExpr(null);
setHeaderExpr(null);
setNameExpr(null);
setParameterExpr(null);
setPropertyExpr(null);
setRoleExpr(null);
setScopeExpr(null);
setUserExpr(null);
}
/**
* Process the start tag.
*
* @throws JspException if a JSP exception has occurred
*/
public int doStartTag() throws JspException {
evaluateExpressions();
return (super.doStartTag());
}
/**
* Processes all attribute values which use the JSTL expression evaluation
* engine to determine their values.
*
* @throws JspException if a JSP exception has occurred
*/
private void evaluateExpressions()
throws JspException {
String string = null;
if ((string =
EvalHelper.evalString("cookie", getCookieExpr(), this,
pageContext)) != null) {
setCookie(string);
}
if ((string =
EvalHelper.evalString("header", getHeaderExpr(), this,
pageContext)) != null) {
setHeader(string);
}
if ((string =
EvalHelper.evalString("name", getNameExpr(), this, pageContext)) != null) {
setName(string);
}
if ((string =
EvalHelper.evalString("parameter", getParameterExpr(), this,
pageContext)) != null) {
setParameter(string);
}
if ((string =
EvalHelper.evalString("property", getPropertyExpr(), this,
pageContext)) != null) {
setProperty(string);
}
if ((string =
EvalHelper.evalString("role", getRoleExpr(), this, pageContext)) != null) {
setRole(string);
}
if ((string =
EvalHelper.evalString("scope", getScopeExpr(), this, pageContext)) != null) {
setScope(string);
}
if ((string =
EvalHelper.evalString("user", getUserExpr(), this, pageContext)) != null) {
setUser(string);
}
}
}