package com.googlecode.struts2yuiplugin.components;



import com.opensymphony.xwork2.util.ValueStack;

import com.googlecode.struts2yuiplugin.tools.YUITools;



import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;



import org.apache.struts2.views.annotations.StrutsTagAttribute;

import org.apache.struts2.views.annotations.StrutsTag;



/**

 * A div that can load its own HTML content via XHR

 */

@StrutsTag(name = "div", tldTagClass = "com.googlecode.struts2yuiplugin.views.jsp.ui.DivTag", description = "Renders a div with content loaded via XHR")

public class Div extends ClosingYUIBean implements XHRComponent, OGNLEvaluator {



    public static final String OPEN_TEMPLATE = "yuidiv";

    public static final String TEMPLATE = OPEN_TEMPLATE +"-close";



    private XHRSupport xhrSupport;



    public Div(ValueStack valueStack, HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) {

        super(valueStack, httpServletRequest, httpServletResponse);

        xhrSupport = new XHRSupport(this);

    }



    @Override

    public void evaluateParams() {

        super.evaluateParams();

        xhrSupport.evaluateParams(this);



        populateOnLoadListenerName();

        addParameter("target", getId()); // target is self

    }



    /**

      * Generate the javascript onload listener name if not explictly specified

      * The name is generated from the id but sanitized for javascript

      */

    private void populateOnLoadListenerName() {

        String onLoadListener = YUITools.sanitizeForJavascript(getId()+"OnLoad");

        addParameter("onLoadListener", onLoadListener);

    }



    public String getDefaultOpenTemplate() {

        return OPEN_TEMPLATE;

    }



    protected String getDefaultTemplate() {

        return TEMPLATE;

    }



    @Override

    @StrutsTagAttribute(description = "Mandatory id attribute", required = true, rtexprvalue = true)

    public void setId(String id) {

        super.setId(id);

    }



    /**

     * The optional ID of the form to include in the request

     */

    @StrutsTagAttribute(description = "The ID of the form to include in the request", required = false)

    public void setFormId(String formId) {

        xhrSupport.setFormId(formId);

    }



    /**

     * Optional href to send the request to.  If not provided, the form's action will used

     */

    @StrutsTagAttribute(description = "The URL to make the request to if other than the form's action", required = false, rtexprvalue = true)

    public void setHref(String href) {

        xhrSupport.setHref(href);

    }



    /**

     * HTTP method to use when HREF is specified. Default is GET

     */

    @StrutsTagAttribute(description = "The HTTP method to use", required = false, defaultValue = "GET")

    public void setMethod(String method) {

        xhrSupport.setMethod(method);

    }



     /**

     * The name of an alternative javascript callback for the YUI Connection Manager's response

     */

    @StrutsTagAttribute(description = "An alternative javascript callback for the YUI Connection Manager's response", required = false)

    public void setCallback(String callback) {

        xhrSupport.setCallback(callback);

    }



    @Override

    @StrutsTagAttribute(description = "Not supported")

    public void setTitle(String title) {

        super.setTitle(title);

    }



    @Override

    @StrutsTagAttribute(description = "Not supported")

    public void setDisabled(String disabled) {

        super.setDisabled(disabled);

    }



    @Override

    @StrutsTagAttribute(description = "Not supported")

    public void setLabel(String label) {

        super.setLabel(label);

    }



    @Override

    @StrutsTagAttribute(description = "Not supported")

    public void setLabelSeparator(String labelseparator) {

        super.setLabelSeparator(labelseparator);

    }



    @Override

    @StrutsTagAttribute(description = "Not supported")

    public void setLabelposition(String labelPosition) {

        super.setLabelposition(labelPosition);

    }



    @Override

    @StrutsTagAttribute(description = "Not supported")

    public void setRequiredposition(String requiredposition) {

        super.setRequiredposition(requiredposition);    

    }



    @Override

    @StrutsTagAttribute(description = "Not supported")

    public void setRequired(String required) {

        super.setRequired(required);

    }



    @Override

    @StrutsTagAttribute(description = "Not supported")

    public void setName(String name) {

        super.setName(name);

    }



    @Override

    @StrutsTagAttribute(description = "Not supported")

    public void setValue(String value) {

        super.setValue(value);

    }



    @Override

    @StrutsTagAttribute(description = "Not supported")

    public void setTabindex(String tabindex) {

        super.setTabindex(tabindex);

    }



    @Override

    @StrutsTagAttribute(description = "Not supported")

    public void setAccesskey(String accesskey) {

        super.setAccesskey(accesskey);

    }



    /**

     * Evaluates the OGNL expression

     *

     * @param expr OGNL expression.

     * @return the String value found.

     */

    public String evaluateExpression(String expr) {

        return super.findString(expr);

    }



}