/******************************************************************
*                                                                 *
*     JavaScript to run the pizza order form.                     *
*                                                                 *
*     Author:  A. Student (put your name here)                    *
*                                                                 *
*     Date Created:  October xx, 2013                             *
*                                                                 *
*******************************************************************/

/* This function defines the required event listeners for the
   various form elements.
*/

window.onload = function () {

    var elem;

    startForm();
    
    // Define event listeners for the pizza type radio buttons.
    
    var radios = document.getElementsByName("pizza");
    for (var i = 0, max = radios.length; i < max; i++) {

        elem = radios[i];

        if (elem) {
            elem.addEventListener("click", costPizzaType, false);
        } else {
            alert('oops - error adding listener to pizza element');
        }
    }

    // Define event listener for the pizza size selection.
    
    elem = document.getElementById("size");

    if (elem) {
            elem.addEventListener("change", costPizzaSize, false);
    } else {
            alert('oops - error adding listener to size element');
    }

    // Define event listeners for the pizza toppings checkboxes.
    
    checkbox = document.getElementsByName("topping[]");
    for (var i = 0, max = checkbox.length; i < max; i++) {

        elem = checkbox[i];

        if (elem) {
            elem.addEventListener("click", costTopping, false);
        } else {
            alert('oops - error adding listener to topping element');
        }
    }
    
    // Define event listeners for the pizza quantity.
    
    elem = document.getElementById("quantity");
    if (elem) {
            elem.addEventListener("change", getQuantity, false);
    } else {
            alert('oops - error adding listener to quantity element');
    }
    
    // Define event listener for the reset button.
    
    buttons = document.getElementsByTagName("input");
    for (var i = 0, max = buttons.length; i < max; i++) {
    
        var myName = buttons[i].getAttribute("type");
        if (myName && myName.indexOf("reset") == 0) {
            buttons[i].addEventListener( "click", resetForm, false );
        }
    }
}  /* end function window.onload */


/******************************************************************
*                                                                 *
*  Lab 5 work starts from this point:                             *
*                                                                 *
*******************************************************************/

function costPizzaType() {
    /* Need to determine which of the radio buttons was clicked - that
        one will be the only one that has the checked property.
    */

     /* To be written in lab 5 */
}

function costPizzaSize() {
   
      /* To be written in lab 5 */
}

function costTopping() {
    /* Need to determine which of the checkboxes was clicked - that
       one will be the one(s) having the checked property.
    */

      /* To be written in lab 5 */

}

function getQuantity() {

      /* To be written in lab 5 */

}

function calcTotal() {

     /* To be written in lab 5 */
}


function startForm() {

   /* To be written in lab 5 */
}

function resetForm() {

  /*  To be written in lab 5 */
}


/******************************************************************
*                                                                 *
*  End of order.js                                                *
*                                                                 *
*******************************************************************/