/*
 * $Id: ELFormTag.java 479635 2006-11-27 14:27:18Z pbenedict $
 *
 * 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.FormTag;
import org.apache.strutsel.taglib.utils.EvalHelper;

import javax.servlet.jsp.JspException;

/**
 * Custom tag that represents an input form, associated with a bean whose
 * properties correspond to the various fields of the form. <p> This class is
 * a subclass of the class <code>org.apache.struts.taglib.html.FormTag</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: 479635 $
 */
public class ELFormTag extends FormTag {
    /**
     * Instance variable mapped to "action" tag attribute. (Mapping set in
     * associated BeanInfo class.)
     */
    private String actionExpr;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    /**
     * Getter method for "dir" tag attribute. (Mapping set in associated
     * BeanInfo class.)
     */
    public String getDirExpr() {
        return (dirExpr);
    }

    /**
     * Getter method for "disabled" tag attribute. (Mapping set in associated
     * BeanInfo class.)
     */
    public String getDisabledExpr() {
        return (disabledExpr);
    }

    /**
     * Getter method for "enctype" tag attribute. (Mapping set in associated
     * BeanInfo class.)
     */
    public String getEnctypeExpr() {
        return (enctypeExpr);
    }

    /**
     * Getter method for "focus" tag attribute. (Mapping set in associated
     * BeanInfo class.)
     */
    public String getFocusExpr() {
        return (focusExpr);
    }

    /**
     * Getter method for "focusIndex" tag attribute. (Mapping set in
     * associated BeanInfo class.)
     */
    public String getFocusIndexExpr() {
        return (focusIndexExpr);
    }

    /**
     * Getter method for "lang" tag attribute. (Mapping set in associated
     * BeanInfo class.)
     */
    public String getLangExpr() {
        return (langExpr);
    }

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

    /**
     * Getter method for "onreset" tag attribute. (Mapping set in associated
     * BeanInfo class.)
     */
    public String getOnresetExpr() {
        return (onresetExpr);
    }

    /**
     * Getter method for "onsubmit" tag attribute. (Mapping set in associated
     * BeanInfo class.)
     */
    public String getOnsubmitExpr() {
        return (onsubmitExpr);
    }

    /**
     * Getter method for "readonly" tag attribute. (Mapping set in associated
     * BeanInfo class.)
     */
    public String getReadonlyExpr() {
        return (readonlyExpr);
    }

    /**
     * Getter method for "scriptLanguage" tag attribute. (Mapping set in
     * associated BeanInfo class.)
     */
    public String getScriptLanguageExpr() {
        return (scriptLanguageExpr);
    }

    /**
     * Getter method for "style" tag attribute. (Mapping set in associated
     * BeanInfo class.)
     */
    public String getStyleExpr() {
        return (styleExpr);
    }

    /**
     * Getter method for "styleClass" tag attribute. (Mapping set in
     * associated BeanInfo class.)
     */
    public String getStyleClassExpr() {
        return (styleClassExpr);
    }

    /**
     * Getter method for "styleId" tag attribute. (Mapping set in associated
     * BeanInfo class.)
     */
    public String getStyleIdExpr() {
        return (styleIdExpr);
    }

    /**
     * Getter method for "target" tag attribute. (Mapping set in associated
     * BeanInfo class.)
     */
    public String getTargetExpr() {
        return (targetExpr);
    }

    /**
     * Getter method for "acceptCharset" tag attribute. (Mapping set in
     * associated BeanInfo class.)
     */
    public String getAcceptCharsetExpr() {
        return (acceptCharsetExpr);
    }

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    /**
     * Resets attribute values for tag reuse.
     */
    public void release() {
        super.release();
        setActionExpr(null);
        setDirExpr(null);
        setDisabledExpr(null);
        setEnctypeExpr(null);
        setFocusExpr(null);
        setFocusIndexExpr(null);
        setLangExpr(null);
        setMethodExpr(null);
        setOnresetExpr(null);
        setOnsubmitExpr(null);
        setReadonlyExpr(null);
        setScriptLanguageExpr(null);
        setStyleExpr(null);
        setStyleClassExpr(null);
        setStyleIdExpr(null);
        setTargetExpr(null);
        setAcceptCharsetExpr(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("dir", getDirExpr(), this,
        			pageContext)) != null) {
        	setDir(string);
        }
        
        if ((bool =
                EvalHelper.evalBoolean("disabled", getDisabledExpr(), this,
                    pageContext)) != null) {
            setDisabled(bool.booleanValue());
        }

        if ((string =
                EvalHelper.evalString("enctype", getEnctypeExpr(), this,
                    pageContext)) != null) {
            setEnctype(string);
        }

        if ((string =
                EvalHelper.evalString("focus", getFocusExpr(), this, pageContext)) != null) {
            setFocus(string);
        }

        if ((string =
                EvalHelper.evalString("focusIndex", getFocusIndexExpr(), this,
                    pageContext)) != null) {
            setFocusIndex(string);
        }

        if ((string =
            	EvalHelper.evalString("lang", getLangExpr(), this,
            		pageContext)) != null) {
        	setLang(string);
        }

        if ((string =
                EvalHelper.evalString("method", getMethodExpr(), this,
                    pageContext)) != null) {
            setMethod(string);
        }

        if ((string =
                EvalHelper.evalString("onreset", getOnresetExpr(), this,
                    pageContext)) != null) {
            setOnreset(string);
        }

        if ((string =
                EvalHelper.evalString("onsubmit", getOnsubmitExpr(), this,
                    pageContext)) != null) {
            setOnsubmit(string);
        }

        if ((bool =
                EvalHelper.evalBoolean("readonly", getReadonlyExpr(), this,
                    pageContext)) != null) {
            setReadonly(bool.booleanValue());
        }

        if ((bool =
                EvalHelper.evalBoolean("scriptLanguage",
                    getScriptLanguageExpr(), this, pageContext)) != null) {
            setScriptLanguage(bool.booleanValue());
        }

        if ((string =
                EvalHelper.evalString("style", getStyleExpr(), this, pageContext)) != null) {
            setStyle(string);
        }

        if ((string =
                EvalHelper.evalString("styleClass", getStyleClassExpr(), this,
                    pageContext)) != null) {
            setStyleClass(string);
        }

        if ((string =
                EvalHelper.evalString("styleId", getStyleIdExpr(), this,
                    pageContext)) != null) {
            setStyleId(string);
        }

        if ((string =
                EvalHelper.evalString("target", getTargetExpr(), this,
                    pageContext)) != null) {
            setTarget(string);
        }

        if ((string =
                EvalHelper.evalString("acceptCharset", getAcceptCharsetExpr(),
                    this, pageContext)) != null) {
            setAcceptCharset(string);
        }
    }
}
