@using LeafWeb.WebCms.Controllers
@model Tuple<int, string, bool, bool>
@{
    var leafInputId = Model.Item1;
    var identifier = Model.Item2;
    var isDeletable = Model.Item3;
    // true for a link, false for a button
    var buttonType = Model.Item4 ? "btn-link" : "btn-default";
}
@using (Html.BeginUmbracoForm<QueueController>("Delete", null, 
    new { @class = "confirm clearfix", confirm_msg = "Deletion cannot be undone! Confirm deleting '" + identifier + "'." }))
{
    <input type="hidden" name="id" value="@leafInputId"/>
    <button type="submit" class="btn @buttonType" @{if (!isDeletable) { <text> disabled="disabled" </text>  }}>
        <span class="glyphicon glyphicon-remove"></span> Delete
    </button>
}