    /**
     * @class Ext.view.TableChunker
     *
     * Produces optimized XTemplates for chunks of tables to be
     * used in grids, trees and other table based widgets.
     *
     * @singleton
     */
    Ext.define('Ext.view.TableChunker', {
        singleton: true,
        requires: ['Ext.XTemplate'],
        metaTableTpl: [
            '{[this.openTableWrap()]}',
            '<table class="' + Ext.baseCSSPrefix + 'grid-table ' + Ext.baseCSSPrefix + 'grid-table-resizer" border="0" cellspacing="0" cellpadding="0" {[this.embedFullWidth()]}>',
                '<tbody>',
                '<tr class="' + Ext.baseCSSPrefix + 'grid-header-row">',
                '<tpl for="columns">',
                    '<th class="' + Ext.baseCSSPrefix + 'grid-col-resizer-{id}" style="width: {width}px; height: 0px;"></th>',
                '</tpl>',
                '</tr>',
                '{[this.openRows()]}',
                    '{row}',
                    '<tpl for="features">',
                        '{[this.embedFeature(values, parent, xindex, xcount)]}',
                    '</tpl>',
                '{[this.closeRows()]}',
                '</tbody>',
            '</table>',
            '{[this.closeTableWrap()]}'
        ],

        constructor: function() {
            Ext.XTemplate.prototype.recurse = function(values, reference) {
                return this.apply(reference ? values[reference] : values);
            };
        },

        embedFeature: function(values, parent, x, xcount) {
            var tpl = '';
            if (!values.disabled) {
                tpl = values.getFeatureTpl(values, parent, x, xcount);
            }
            return tpl;
        },

        embedFullWidth: function() {
            return 'style="width: {fullWidth}px;"';
        },

        openRows: function() {
            return '<tpl for="rows">';
        },

        closeRows: function() {
            return '</tpl>';
        },

        metaRowTpl: [
            '<tr class="' + Ext.baseCSSPrefix + 'grid-row {addlSelector} {[this.embedRowCls()]}" {[this.embedRowAttr()]}>',
                '<tpl for="columns">',
                    '<td class="{cls} ' + Ext.baseCSSPrefix + 'grid-cell ' + Ext.baseCSSPrefix + 'grid-cell-{columnId} {{id}-modified} {{id}-tdCls} {[this.firstOrLastCls(xindex, xcount)]}" {{id}-tdAttr}><div unselectable="on" class="' + Ext.baseCSSPrefix + 'grid-cell-inner ' + Ext.baseCSSPrefix + 'unselectable" style="{{id}-style}; text-align: {align};">{{id}}</div></td>',
                '</tpl>',
            '</tr>'
        ],

        firstOrLastCls: function(xindex, xcount) {
            var cssCls = '';
            if (xindex === 1) {
                cssCls = Ext.baseCSSPrefix + 'grid-cell-first';
            } else if (xindex === xcount) {
                cssCls = Ext.baseCSSPrefix + 'grid-cell-last';
            }
            return cssCls;
        },

        embedRowCls: function() {
            return '{rowCls}';
        },

        embedRowAttr: function() {
            return '{rowAttr}';
        },

        openTableWrap: function() {
            return '';
        },

        closeTableWrap: function() {
            return '';
        },

        getTableTpl: function(cfg, textOnly) {
            var tpl,
                tableTplMemberFns = {
                    openRows: this.openRows,
                    closeRows: this.closeRows,
                    embedFeature: this.embedFeature,
                    embedFullWidth: this.embedFullWidth,
                    openTableWrap: this.openTableWrap,
                    closeTableWrap: this.closeTableWrap
                },
                tplMemberFns = {},
                features = cfg.features || [],
                ln = features.length,
                i  = 0,
                memberFns = {
                    embedRowCls: this.embedRowCls,
                    embedRowAttr: this.embedRowAttr,
                    firstOrLastCls: this.firstOrLastCls
                },
                // copy the default
                metaRowTpl = Array.prototype.slice.call(this.metaRowTpl, 0),
                metaTableTpl;

            for (; i < ln; i++) {
                if (!features[i].disabled) {
                    features[i].mutateMetaRowTpl(metaRowTpl);
                    Ext.apply(memberFns, features[i].getMetaRowTplFragments());
                    Ext.apply(tplMemberFns, features[i].getFragmentTpl());
                    Ext.apply(tableTplMemberFns, features[i].getTableFragments());
                }
            }

            metaRowTpl = Ext.create('Ext.XTemplate', metaRowTpl.join(''), memberFns);
            cfg.row = metaRowTpl.applyTemplate(cfg);

            metaTableTpl = Ext.create('Ext.XTemplate', this.metaTableTpl.join(''), tableTplMemberFns);

            tpl = metaTableTpl.applyTemplate(cfg);

            // TODO: Investigate eliminating.
            if (!textOnly) {
                tpl = Ext.create('Ext.XTemplate', tpl, tplMemberFns);
            }
            return tpl;

        }
    });