window.onload = function ()
{
    var textAreas = xGetElementsByTagName('textarea');
    for (var i = 0; i < textAreas.length; i++)
    {
        xAddEventListener(textAreas[i], 'keypress', submitOnCtrlEnter);
    }
}

/*
Submits an element's form if the enter key is pressed
*/
function submitOnEnter(e)
{
    var xe = new xEvent(e);
    var targetObject = xe.target;
    if (xe.keyCode  == 13 && targetObject.form)
    {
        targetObject.form.submit();
    }
}

/*
Submits an element's form if the enter key and the control key is pressed
*/
function submitOnCtrlEnter(e)
{
    var xe = new xEvent(e);
    var targetObject = xe.target;
    if (xe.ctrlKey && (xe.keyCode  == 13 || xe.keyCode == 10 ) && targetObject.form)
    {
        targetObject.form.submit();
        return false;
    }
    return true;
}


/** A bunch of useful utilitiy javascript methods available to all jira pages **/

/*
Returns a space delimited value of a select list. There's strangely no in-built way of doing this for multi-selects
*/
function getMultiSelectValues(selectObject)
{
    var selectedValues = '';
    for (var i = 0; i < selectObject.length; i++)
    {
        if(selectObject.options[i].selected)
        {
            if (selectObject.options[i].value && selectObject.options[i].value.length > 0)
                selectedValues = selectedValues + ' ' + selectObject.options[i].value;
        }
    }

    return selectedValues;
}

/*
 Adds a class name to the given element
 */
function addClassName(elementId, classNameToAdd)
{
    var elem = document.getElementById(elementId);
    if (elem)
    {
        elem.className = elem.className + ' ' + classNameToAdd;
    }
}

/*
 Removes all class names to from the given element
 */
function removeClassName(elementId, classNameToRemove)
{
    var elem = document.getElementById(elementId);
    if (elem)
    {
        elem.className = (' ' + elem.className + ' ').replace(' ' + classNameToRemove + ' ', ' ');
    }
}


/*
 Toggles hide / unhide an element. Also attempts to change the "elementId + header" element to have the headerOpened / headerClosed class.
 Also saves the state in a cookie
*/
function toggle(elementId) 
{
    var elem = document.getElementById(elementId);
    if (elem)
    {
        if (readCookie(elementId) == 'headerOpened') 
        {
            elem.style.display = "none";
            removeClassName(elementId + 'header', 'headerOpened');
            addClassName(elementId + 'header', 'headerClosed');
            saveCookie(elementId, 'headerClosed');
        }
        else
        {
            elem.style.display = "";
            removeClassName(elementId + 'header', 'headerClosed');
            addClassName(elementId + 'header', 'headerOpened');
            saveCookie(elementId, 'headerOpened');
        }
    }
}

/*
 Similar to toggle. Run this on page load.
*/
function restore(elementId) 
{
    var elem = document.getElementById(elementId);
    
    if (elem)
    {
        if (readCookie(elementId) != 'headerOpened')       
        {
            elem.style.display = "none";
            removeClassName(elementId + 'header', 'headerOpened');
            addClassName(elementId + 'header', 'headerClosed')
        }
        else
        {
            elem.style.display = "";
            removeClassName(elementId + 'header', 'headerClosed');
            addClassName(elementId + 'header', 'headerOpened')
        }
    }
}




// Cookie handling functions
function saveCookie(name,value)
{
  document.cookie = name+"="+value;
}

/*
Reads a cookie. If none exists, then it returns and 
*/

function readCookie(name)
{    
     var eq = name + "=";
       var ca = document.cookie.split(';');
       for(var i=0;i<ca.length;i++) {
         var c = ca[i];
         while (c.charAt(0)==' ') 
             c = c.substring(1,c.length);
         if (c.indexOf(eq) == 0) 
            return c.substring(eq.length,c.length);
       }
}

function eraseCookie(name)
{
  saveCookie(name,"");
}


function destroyCookies() {
    for (i=0 ; i < allMenus.length ; i++)
    {
       eraseCookie(allMenus[i]);
    }
}