var ElementCheckboxTree = (function () {
    var checkboxTree = function() { this.initialize.apply(this, arguments); };
    checkboxTree.defaultOptions = {
        elementId: undefined,
        linksClass: undefined
    };
    checkboxTree.prototype = {
        initialize: function (options) {
            var that = this;
            this.options = $.extend({}, checkboxTree.defaultOptions, options);
            this.element = $('#' + this.options.elementId);
            this.links = this.element.find('.' + this.options.linksClass + ':first');
            if (this.element.size() && this.links.size()) {
                this.links.find('li>a').bind('click.checkboxTree', function () {
                    that.onLinkClick.apply(that, arguments);
                });
            }
            return this;
        },
        onLinkClick: function (e) {
            var target = $(e.currentTarget);
            if (target.hasClass('checkAll')) {
                e.preventDefault();
                this.element.find(':checkbox').attr('checked', 'checked');
            } else if (target.hasClass('uncheckAll')) {
                e.preventDefault();
                this.element.find(':checkbox').removeAttr('checked');
            }
            return this;
        }

    };

    return checkboxTree;
})();