/////////////////
// UI +  DHTML //
/////////////////
var blog_favourites = new Array();

// toggles the favourite icons depending on whether the blog entry is a favourite
function changeFavIcons(blogId, isFav) {
    var stars = document.getElementsByName("star_" + blogId);
    for (var i = 0; i < stars.length; i++)
    {
        if(isFav) {
            stars[i].style.display = 'inline';
        } else {
            stars[i].style.display = 'none';
        }
    }

    var addfavIcons = document.getElementsByName("addfav_icon_" + blogId);
    var remfavIcons = document.getElementsByName("remfav_icon_" + blogId);
    for(var i = 0; i < addfavIcons.length; i++) {
        if (isFav) {
            addfavIcons[i].style.display = 'none';
            remfavIcons[i].style.display = 'inline';
        } else {
            addfavIcons[i].style.display = 'inline';
            remfavIcons[i].style.display = 'none';
        }
    }
}

////////////////////////////////////////
// DWR CALLS AND RESPECTIVE CALLBACKS //
////////////////////////////////////////
function markAsFavourite(blogId)
{
    if (blog_favourites[blogId] == 'ignored')
    {
        // if the blog was ignored, then we can't restore it properly without reloading the page
        dwrFavManager.markBlogAsFavourite(blogId, refreshCallback);
    }
    else
    {
        dwrFavManager.markBlogAsFavourite(blogId, markAsFavouriteCallback(blogId));
    }
}

function markAsFavouriteCallback(blogId)
{
    // edit icons
    changeFavIcons(blogId, true);

    // update client data state
    blog_favourites[blogId] = 'favourite';
}

function unmarkAsFavourite(blogId)
{
    dwrFavManager.unmarkBlog(blogId, unmarkAsFavouriteCallback(blogId));
}

function unmarkAsFavouriteCallback(blogId)
{
    // we don't need to worry about checking if the blog was ignored -> it can't be because if unmarkFav is called, it means blog was a fav

    // edit icons
    changeFavIcons(blogId, false);

    // update client data state
    blog_favourites[blogId] = 'neither';
}

function markAsIgnored(blogId)
{
    dwrFavManager.markBlogAsIgnored(blogId, refreshCallback);
}

function unmarkAsIgnored(blogId)
{
    dwrFavManager.unmarkBlog(blogId, refreshCallback);
}

function refreshCallback()
{
    // reload page so the ignored items are removed
    location.reload(true);
}