/*
 * $Id: ELRewriteTag.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.html;

import org.apache.struts.taglib.html.RewriteTag;
import org.apache.strutsel.taglib.utils.EvalHelper;

import javax.servlet.jsp.JspException;

/**
 * Generate a URL-encoded URI as a string. <p> This class is a subclass of the
 * class <code>org.apache.struts.taglib.html.RewriteTag</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 ELRewriteTag extends RewriteTag {
    /**
     * Instance variable mapped to "action" tag attribute. (Mapping set in
     * associated BeanInfo class.)
     */
    private String actionExpr;

    /**
     * Instance variable mapped to "module" tag attribute. (Mapping set in
     * associated BeanInfo class.)
     */
    private String moduleExpr;

    /**
     * Instance variable mapped to "anchor" tag attribute. (Mapping set in
     * associated BeanInfo class.)
     */
    private String anchorExpr;

    /**
     * Instance variable mapped to "forward" tag attribute. (Mapping set in
     * associated BeanInfo class.)
     */
    private String forwardExpr;

    /**
     * Instance variable mapped to "href" tag attribute. (Mapping set in
     * associated BeanInfo class.)
     */
    private String hrefExpr;

    /**
     * Instance variable mapped to "name" tag attribute. (Mapping set in
     * associated BeanInfo class.)
     */
    private String nameExpr;

    /**
     * Instance variable mapped to "page" tag attribute. (Mapping set in
     * associated BeanInfo class.)
     */
    private String pageExpr;

    /**
     * Instance variable mapped to "paramId" tag attribute. (Mapping set in
     * associated BeanInfo class.)
     */
    private String paramIdExpr;

    /**
     * Instance variable mapped to "paramName" tag attribute. (Mapping set in
     * associated BeanInfo class.)
     */
    private String paramNameExpr;

    /**
     * Instance variable mapped to "paramProperty" tag attribute. (Mapping set
     * in associated BeanInfo class.)
     */
    private String paramPropertyExpr;

    /**
     * Instance variable mapped to "paramScope" tag attribute. (Mapping set in
     * associated BeanInfo class.)
     */
    private String paramScopeExpr;

    /**
     * Instance variable mapped to "property" tag attribute. (Mapping set in
     * associated BeanInfo class.)
     */
    private String propertyExpr;

    /**
     * Instance variable mapped to "scope" tag attribute. (Mapping set in
     * associated BeanInfo class.)
     */
    private String scopeExpr;

    /**
     * Instance variable mapped to "transaction" tag attribute. (Mapping set
     * in associated BeanInfo class.)
     */
    private String transactionExpr;

    /**
     * Instance variable mapped to "useLocalEncoding" tag attribute. (Mapping
     * set in associated BeanInfo class.)
     */
    private String useLocalEncodingExpr;

    /**
     * Getter method for "action" tag attribute. (Mapping set in associated
     * BeanInfo class.)
     */
    public String getActionExpr() {
        return (actionExpr);
    }

    /**
     * Getter method for "module" tag attribute. (Mapping set in associated
     * BeanInfo class.)
     */
    public String getModuleExpr() {
        return (moduleExpr);
    }

    /**
     * Getter method for "anchor" tag attribute. (Mapping set in associated
     * BeanInfo class.)
     */
    public String getAnchorExpr() {
        return (anchorExpr);
    }

    /**
     * Getter method for "forward" tag attribute. (Mapping set in associated
     * BeanInfo class.)
     */
    public String getForwardExpr() {
        return (forwardExpr);
    }

    /**
     * Getter method for "href" tag attribute. (Mapping set in associated
     * BeanInfo class.)
     */
    public String getHrefExpr() {
        return (hrefExpr);
    }

    /**
     * Getter method for "name" tag attribute. (Mapping set in associated
     * BeanInfo class.)
     */
    public String getNameExpr() {
        return (nameExpr);
    }

    /**
     * Getter method for "page" tag attribute. (Mapping set in associated
     * BeanInfo class.)
     */
    public String getPageExpr() {
        return (pageExpr);
    }

    /**
     * Getter method for "paramId" tag attribute. (Mapping set in associated
     * BeanInfo class.)
     */
    public String getParamIdExpr() {
        return (paramIdExpr);
    }

    /**
     * Getter method for "paramName" tag attribute. (Mapping set in associated
     * BeanInfo class.)
     */
    public String getParamNameExpr() {
        return (paramNameExpr);
    }

    /**
     * Getter method for "paramProperty" tag attribute. (Mapping set in
     * associated BeanInfo class.)
     */
    public String getParamPropertyExpr() {
        return (paramPropertyExpr);
    }

    /**
     * Getter method for "paramScope" tag attribute. (Mapping set in
     * associated BeanInfo class.)
     */
    public String getParamScopeExpr() {
        return (paramScopeExpr);
    }

    /**
     * Getter method for "property" tag attribute. (Mapping set in associated
     * BeanInfo class.)
     */
    public String getPropertyExpr() {
        return (propertyExpr);
    }

    /**
     * Getter method for "scope" tag attribute. (Mapping set in associated
     * BeanInfo class.)
     */
    public String getScopeExpr() {
        return (scopeExpr);
    }

    /**
     * Getter method for "transaction" tag attribute. (Mapping set in
     * associated BeanInfo class.)
     */
    public String getTransactionExpr() {
        return (transactionExpr);
    }

    /**
     * Getter method for "useLocalEncoding" tag attribute. (Mapping set in
     * associated BeanInfo class.)
     */
    public String getUseLocalEncodingExpr() {
        return (useLocalEncodingExpr);
    }

    /**
     * Setter method for "action" tag attribute. (Mapping set in associated
     * BeanInfo class.)
     */
    public void setActionExpr(String actionExpr) {
        this.actionExpr = actionExpr;
    }

    /**
     * Setter method for "module" tag attribute. (Mapping set in associated
     * BeanInfo class.)
     */
    public void setModuleExpr(String moduleExpr) {
        this.moduleExpr = moduleExpr;
    }

    /**
     * Setter method for "anchor" tag attribute. (Mapping set in associated
     * BeanInfo class.)
     */
    public void setAnchorExpr(String anchorExpr) {
        this.anchorExpr = anchorExpr;
    }

    /**
     * Setter method for "forward" tag attribute. (Mapping set in associated
     * BeanInfo class.)
     */
    public void setForwardExpr(String forwardExpr) {
        this.forwardExpr = forwardExpr;
    }

    /**
     * Setter method for "href" tag attribute. (Mapping set in associated
     * BeanInfo class.)
     */
    public void setHrefExpr(String hrefExpr) {
        this.hrefExpr = hrefExpr;
    }

    /**
     * Setter method for "name" tag attribute. (Mapping set in associated
     * BeanInfo class.)
     */
    public void setNameExpr(String nameExpr) {
        this.nameExpr = nameExpr;
    }

    /**
     * Setter method for "page" tag attribute. (Mapping set in associated
     * BeanInfo class.)
     */
    public void setPageExpr(String pageExpr) {
        this.pageExpr = pageExpr;
    }

    /**
     * Setter method for "paramId" tag attribute. (Mapping set in associated
     * BeanInfo class.)
     */
    public void setParamIdExpr(String paramIdExpr) {
        this.paramIdExpr = paramIdExpr;
    }

    /**
     * Setter method for "paramName" tag attribute. (Mapping set in associated
     * BeanInfo class.)
     */
    public void setParamNameExpr(String paramNameExpr) {
        this.paramNameExpr = paramNameExpr;
    }

    /**
     * Setter method for "paramProperty" tag attribute. (Mapping set in
     * associated BeanInfo class.)
     */
    public void setParamPropertyExpr(String paramPropertyExpr) {
        this.paramPropertyExpr = paramPropertyExpr;
    }

    /**
     * Setter method for "paramScope" tag attribute. (Mapping set in
     * associated BeanInfo class.)
     */
    public void setParamScopeExpr(String paramScopeExpr) {
        this.paramScopeExpr = paramScopeExpr;
    }

    /**
     * Setter method for "property" tag attribute. (Mapping set in associated
     * BeanInfo class.)
     */
    public void setPropertyExpr(String propertyExpr) {
        this.propertyExpr = propertyExpr;
    }

    /**
     * Setter method for "scope" tag attribute. (Mapping set in associated
     * BeanInfo class.)
     */
    public void setScopeExpr(String scopeExpr) {
        this.scopeExpr = scopeExpr;
    }

    /**
     * Setter method for "transaction" tag attribute. (Mapping set in
     * associated BeanInfo class.)
     */
    public void setTransactionExpr(String transactionExpr) {
        this.transactionExpr = transactionExpr;
    }

    /**
     * Setter method for "useLocalEncoding" tag attribute. (Mapping set in
     * associated BeanInfo class.)
     */
    public void setUseLocalEncodingExpr(String useLocalEncodingExpr) {
        this.useLocalEncodingExpr = useLocalEncodingExpr;
    }

    /**
     * Resets attribute values for tag reuse.
     */
    public void release() {
        super.release();
        setActionExpr(null);
        setModuleExpr(null);
        setAnchorExpr(null);
        setForwardExpr(null);
        setHrefExpr(null);
        setNameExpr(null);
        setPageExpr(null);
        setParamIdExpr(null);
        setParamNameExpr(null);
        setParamPropertyExpr(null);
        setParamScopeExpr(null);
        setPropertyExpr(null);
        setScopeExpr(null);
        setTransactionExpr(null);
        setUseLocalEncodingExpr(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;
        Boolean bool = null;

        if ((string =
                EvalHelper.evalString("action", getActionExpr(), this,
                    pageContext)) != null) {
            setAction(string);
        }

        if ((string =
                EvalHelper.evalString("module", getModuleExpr(), this,
                    pageContext)) != null) {
            setModule(string);
        }

        if ((string =
                EvalHelper.evalString("anchor", getAnchorExpr(), this,
                    pageContext)) != null) {
            setAnchor(string);
        }

        if ((string =
                EvalHelper.evalString("forward", getForwardExpr(), this,
                    pageContext)) != null) {
            setForward(string);
        }

        if ((string =
                EvalHelper.evalString("href", getHrefExpr(), this, pageContext)) != null) {
            setHref(string);
        }

        if ((string =
                EvalHelper.evalString("name", getNameExpr(), this, pageContext)) != null) {
            setName(string);
        }

        if ((string =
                EvalHelper.evalString("page", getPageExpr(), this, pageContext)) != null) {
            setPage(string);
        }

        if ((string =
                EvalHelper.evalString("paramId", getParamIdExpr(), this,
                    pageContext)) != null) {
            setParamId(string);
        }

        if ((string =
                EvalHelper.evalString("paramName", getParamNameExpr(), this,
                    pageContext)) != null) {
            setParamName(string);
        }

        if ((string =
                EvalHelper.evalString("paramProperty", getParamPropertyExpr(),
                    this, pageContext)) != null) {
            setParamProperty(string);
        }

        if ((string =
                EvalHelper.evalString("paramScope", getParamScopeExpr(), this,
                    pageContext)) != null) {
            setParamScope(string);
        }

        if ((string =
                EvalHelper.evalString("property", getPropertyExpr(), this,
                    pageContext)) != null) {
            setProperty(string);
        }

        if ((string =
                EvalHelper.evalString("scope", getScopeExpr(), this, pageContext)) != null) {
            setScope(string);
        }

        if ((bool =
                EvalHelper.evalBoolean("transaction", getTransactionExpr(),
                    this, pageContext)) != null) {
            setTransaction(bool.booleanValue());
        }

        if ((bool =
                EvalHelper.evalBoolean("useLocalEncoding",
                    getUseLocalEncodingExpr(), this, pageContext)) != null) {
            setUseLocalEncoding(bool.booleanValue());
        }
    }
}
