extjs7 classic actioncolumn ¸ù¾ÝÊý¾Ýdisable°´Å¥

{
    xtype: 'actioncolumn',
    items: [{
        iconCls: 'x-fa fa-stop-circle',
        handler: 'hBtnStop',
        isActionDisabled: function (view, rowIndex, colIndex, item, record) {
            return !record.get('playing');
        }
    }, {
        iconCls: 'x-fa fa-play-circle',
        handler: 'hBtnPlay',
        isActionDisabled: function (view, rowIndex, colIndex, item, record) {
            return record.get('playing');
        }
    }]
}