Ext.define('saas.util.GridUtil', {

    BaseUtil: Ext.create('saas.util.BaseUtil'),

    /**
     * 获取grid列配置
     * @param grid grid组件
     * @param url 请求url
     */
    setColumns: function(grid, url) {
        this.BaseUtil.request({url})
        .then(function(response) {
            var columns = Ext.decode(response.responseText);
            var fields = columns.map(column => column.dataIndex);
            var store = Ext.create('Ext.data.Store', {
                fields,
            });
            if(grid.showIndex) {
                columns.unshift({ xtype: 'rownumberer' });
            }
            grid.reconfigure(store, columns);

            grid.fireEvent('afterSetColumns', grid, columns);
        })
        .catch(function(response) {
            // something...
        });
    },

    /**
     * 获取grid数据
     * @param grid grid组件
     * @param url 请求url
     */
    loadData: function(grid, url) {
        this.BaseUtil.request({url})
        .then(function(response) {
            var data = Ext.decode(response.responseText);
                grid.getStore().loadData(data);

                grid.fireEvent('afterLoadData', grid, data);
        })
        .catch(function(response) {
            // something...
        });
    }
});