Ext.define('saas.override.grid.column.CheckColumn', {
    override: 'Ext.grid.column.Check',

    defaultRenderer:function(value,cellValues,a,b,c,d,e,f){
        var me = this,
        cls = me.checkboxCls,
        tip = '';
        if (me.invert) {
            value = !value;
        }
        if (me.disabled) {
            cellValues.tdCls += ' ' + me.disabledCls;
        }
        if (value) {
            cls += ' ' + me.checkboxCheckedCls;
            tip = me.checkedTooltip;
        } else {
            tip = me.tooltip;
        }
        if (tip) {
            cellValues.tdAttr += ' data-qtip="' + Ext.htmlEncode(tip) + '"';
        }
        if (me.useAriaElements) {
            cellValues.tdAttr += ' aria-describedby="' + me.id + '-cell-description' + (!value ? '-not' : '') + '-selected"';
        }
        // This will update the header state on the next animation frame
        // after all rows have been rendered.
        me.updateHeaderState();
        if(typeof value=='object'&&value==null){
            cellValues.style = 'display: none;';
            cellValues.tdCls += ' ' + me.disabledCls;
            cellValues.innerCls = me.disabledCls;
            cellValues.classes.push(me.disabledCls);
            cellValues.cellRole = me.disabledCls;
            return '<span style="display: none;" class="'+ me.disabledCls +'"></span>'
        }
        //hideCheckField   hideCheckVal
        //根据 某个字段  判断该行的checkbox 是否要隐藏 ，后期可拓展
        if(e.selModel&&e.selModel.hideCheckField){
            var field = e.selModel.hideCheckField;
            var checkVal = e.selModel.hideCheckVal;
            if(a.get(field)==checkVal){
                cellValues.style = 'display: none;';
                cellValues.tdCls += ' ' + me.disabledCls;
                cellValues.innerCls = me.disabledCls;
                cellValues.classes.push(me.disabledCls);
                cellValues.cellRole = me.disabledCls;
                return '<span style="display: none;" class="'+ me.disabledCls +'"></span>'
            }
        }

        return '<span class="' + cls + '" role="' + me.checkboxAriaRole + '"' + (!me.ariaStaticRoles[me.checkboxAriaRole] ? ' tabIndex="0"' : '') + '></span>';
    }

});