/**
 * key press handler for buttons. enables space and enter to activate a button
 * @param {type} e
 * @returns {undefined}
 */
function keyPressButtonHandler(e) {        
    if($j(e.target).is("a"))
    {
        if(!$j(e.target).is(".to-open-popup") && e.which == 32) {
            e.target.click();
            e.stopPropagation();
            e.preventDefault();
        }
    } else {
        if(e.which == 13) {
            e.target.click();
            e.stopPropagation();
            e.preventDefault();
        }
    }
}

/**
 * key press handler for links. calls the onclick handlers on enter key
 * @param {type} e
 * @returns {undefined}
 */
function keyPressLinkHandler(e) {        
    if(e.which == 13) {
        e.target.click();
        e.stopPropagation();
        e.preventDefault();
    }
}

/**
 * transform some special classnames into aria attributes
 * @returns {undefined}
 */
function addAriaInformation() {
    $j(".ariaHasPopup").attr("aria-haspopup","true");
    $j(".ariaExpanded").attr("aria-expanded","true");
    $j(".ariaSelected").attr("aria-selected","true");
    $j(".ariaRequired").attr("aria-required","true");
    $j(".ariaHidden").attr("aria-hidden","true");
    $j(".ariaMenu").attr("role","menu");
    $j(".ariaMenuItem").attr("role","menuitem");
    $j(".ariaListbox").attr("role","listbox");
    $j(".ariaOption").attr("role","option");
    $j(".ariaPresentation").attr("role","presentation");
    $j(".ariaContentInfo").attr("role","contentinfo");
    $j(".ariaBanner").attr("role","banner");
    $j(".ariaTabPanel").attr("role","tabpanel");
    $j(".rf-pp-cntr").attr("role","dialog");
    $j(".errormessage").attr("role","alert");
    $j(".successmessage").attr("role","alert");
    $j(".errorvalidation").attr("role","alert");
    $j(".errorvalidation").attr("aria-invalid","true");
    $j(".rf-pp-btn").attr("aria-hidden", "true").append("<span class=\"speech\">-</span>");

    $j("a[href^='http:'], a[href^='https:']").not(":has('.externalLink')").not(".textEditorBlock a").each(function(){
        $j(this).attr("aria-label",$j(this).text() + " " + externalLinkLabel);
        $j(this).append("<span class=\"externalLink\">"+externalLinkLabel+"</span>");
    });
    
    //use title as aria label
    $j(".ariaTitleAsLabel").each(function(){
        var title;
        if($j(this).text().trim() === $j(this).attr("title").trim()){
            title = $j(this).attr("title");
        } else {
            title = $j(this).text() + " " + $j(this).attr("title");
        }
        if(title) {
            $j(this).attr("aria-label",title.trim());
        }
    });
    
    $j(".ariaTitleAsLabelSimple").each(function(){
        var title = $j(this).attr("title");
        if(title) {
            $j(this).attr("aria-label",title);
        }
    });
    
    $j(".ariaMoveTitleToLabel").each(function(){
        var title = $j(this).attr("title");
        if(title) {
            $j(this).attr("aria-label",title);
            $j(this).removeAttr("title");
        }
    });
    
    $j(".ariaTooltip").each(function(){
        var id = $j(this).parent().find(".rf-tt-cnt").attr("id");
        if(id) {
            $j(this).parent().find(".rf-tt-cnt").attr("role","tooltip");
            $j(this).attr("aria-describedby",id);
        }
    });
    
    //add role button to converis buttons with class "buttons"
    $j('.buttons, .ariaButton, .rf-ds-btn, .firstpage, .lastpage, .nextpage, .previouspage').attr("role","button");
    $j('span.buttons, span.ariaButton, span.rf-ds-btn, span.firstpage, span.lastpage, span.nextpage, span.previouspage').attr("aria-disabled","true");
    $j("a:empty").each(function() {
        var label = $j(this).attr("aria-label");
        if(label) {
            $j(this).append("<span class=\"speech\">"+label+"</span>");
        } else {
            label = $j(this).attr("title");
            if(label) {
                $j(this).append("<span class=\"speech\">"+label+"</span>");
            } else {
                $j(this).append("<span class=\"speech\">-</span>");
            }
        }
    });

    $j(".deduplicationFieldRow").each(function() {
        $j(this).append($j(this).find(".deduplicationValues .deduplicationValueTable td").addClass("deduplicationValue"));
        $j(this).find(".deduplicationValues").remove();
        $j(this).find(".deduplicationValue input").wrap("<td></td>");
        $j(this).find(".deduplicationValue label").wrap("<td></td>");
        $j(this).find(".deduplicationValue").wrapInner("<table role='presentation'><tr></tr></table>");
        if(typeof emptyValue !== 'undefined'){
            $j(this).find(".deduplicationValue label").each(function() {
                if($j(this).text().trim() === "") {
                    $j(this).attr("aria-label",emptyValue);
                }
            });
        }
    });
}

$j(document).ready(function(){
    //add aria information for all elements already in document tree
    addAriaInformation();
    
    //add aria information after an ajax call because there might be new elements in the document tree
    if(typeof jsf !== "undefined") {
        jsf.ajax.addOnEvent(function(data) {
            if (data.status === 'success') {
                addAriaInformation();
            }
        });
    }

    //delegated event handlers for clicks
    $j(document).on("keypress","a",keyPressLinkHandler);
    $j(document).on("keypress",".buttons, .ariaButton, .rf-ds-btn, .firstpage, .lastpage, .nextpage, .previouspage",keyPressButtonHandler);   
//    $j(document).on("keydown",".rf-pp-shade",function(event){
//        event.preventDefault(); 
//        event.stopPropagation();
//    });
//
//    $j(document).on("keypress",".rf-pp-shade",function(event){
//        event.preventDefault(); 
//        event.stopPropagation();
//    });
//
//    $j(document).on("keyup",".rf-pp-shade",function(event){
//        event.preventDefault(); 
//        event.stopPropagation();
//    });    
});

function onCollabsiblePanelSwitch(event) {
    $j(document.getElementById(event.rf.data.id +":header")).attr("aria-expanded",event.rf.data.isExpanded);
}