Infinite scrolling Extension for DataTable Scollable YUI 3.6.0

datatable-infinite-scroll.js

YUI.add('datatable-iscroll', function(Y){
    var iScrollable = Y.DataTable.iScrollable = function() {};

    iScrollable.ATTRS = {
        scrollPageParam : { value : 'page'},
        scrollStartPage : { value : 2 },
        sizeParam : { value : 'size' },
        scrollPageSize : { value : 10 },
        unauthorizedPath : { value : '/' }
    };

    Y.mix(iScrollable.prototype, {
        _scroll : true,
        _requestInProgress : false,

        initializer : function() {
            this.after('renderView', Y.bind('_bindInfiniteScrollbar', this));
        },
        _bindInfiniteScrollbar : function() {
            this._scrollbarNode.on('scroll', Y.bind(function(e) {
                var scrollTop = this._scrollbarNode.get('scrollTop'),
                    scrollHeight = this._scrollbarNode.get('scrollHeight'),
                    tbodyHeight = parseInt(this._scrollbarNode.getComputedStyle('height')),
                    records,
                    startPage = this.get('scrollStartPage');

                if (scrollHeight - scrollTop < 1.5 * tbodyHeight) {
                    if(this._scroll && !this._requestInProgress) {
                        this.datasource.load({
                            request: '?' + this.get('scrollPageParam') + '='+ startPage,
                            callback: {
                                success: Y.bind(function(e) {
                                    this._redirectIf(e.data.statusText);
                                    try {
                                        records = (e.response && e.response.results) || [];
                                        this.get('data').add(records);
                                        this.set('scrollStartPage', startPage + 1);
                                    } catch(e) {
                                        window.console && console.log(e);
                                    } finally {
                                        this._requestInProgress = false;
                                    }
                                }, this),
                                failure : Y.bind(function (e) {
                                    e.data && this._redirectIf(e.data.statusText);
                                    this._requestInProgress = false;
                                }, this)
                            }
                        });
                        this._requestInProgress = true;
                    }
                }
            }, this));
        },
        _redirectIf : function(statusText) {
            if( statusText.indexOf("Unauthorized") >= 0) {
                window.location = this.get('unauthorizedPath');  //have this url passed in with config??
            }
        }
    });

    Y.Base.mix(Y.DataTable, [iScrollable]);

}, '1.0.0', {
    requires : ['datatable-base', 'datatable-scroll']
});

This extension created base on Tocacar's plugin. To use this extension it's enough only to declare module as dependency, something like:

YUI({
    modules : {
        'datatable-iscroll': {
            fullpath: '/scripts/modules/datatable-infinite-scroll.js',
            requires: ['datatable-base', 'datatable-scroll']
        }
    }
}).use("datatable", "datasource-io", "datasource-jsonschema", "datatable-datasource", 'datatable-iscroll', function (Y) {});