kero/src/row-util.js

/**
 * Module : kero dataTable row util
 * Author : liuyk(liuyk@yonyou.com)
 * Date   : 2016-08-08 13:54:01
 */
import {
    isNumber
} from 'tinper-sparrow/src/util';


const eq = function(a, b) {
    if ((a === null || a === undefined || a === '') && (b === null || b === undefined || b === '')) return true;
    //判断输入的值是否相等，a,b是字符串直接比较这两个值即可，没必要判断是否是数据，判断是否是数据使用parseFloat转换有时精度不准（431027199110.078573）
    //if (isNumber(a) && isNumber(b) && parseFloat(a) == parseFloat(b)) return true;
    if (a + '' === b + '' || a === b) return true;
    if (isNumber(a) && isNumber(b)  && parseFloat(a) - parseFloat(b) < 0.0000005 && parseFloat(a) - parseFloat(b) > -0.0000005) return true;
    return false;
}


// 格式化时间
const _formatDate = function(value) {
    if (!value) return value
    var date = new Date();
    date.setTime(value);
    //如果不能转为Date 直接返回原值
    if (isNaN(date)) {
        return value
    }
    var year = date.getFullYear();
    var month = date.getMonth() + 1;
    if (parseInt(month) < 10) month = "0" + month;
    var day = date.getDate();
    if (parseInt(day) < 10) day = "0" + day;
    var hours = date.getHours();
    if (parseInt(hours) < 10) hours = "0" + hours;
    var minutes = date.getMinutes();
    if (parseInt(minutes) < 10) minutes = "0" + minutes;
    var seconds = date.getSeconds();
    if (parseInt(seconds) < 10) seconds = "0" + seconds;
    var mill = date.getMilliseconds();
    var formatString = year + "-" + month + "-" + day + " " + hours + ":" + minutes + ":" + seconds; //+ "." + mill;
    return formatString;
}

// 格式化日期为UTCString
const _dateToUTCString = function(date) {
    if (!date && date != 0) return ''
    if (typeof date === 'number')
        return date
    if (date.indexOf("-") > -1)
        date = date.replace(/\-/g, "/");
    var utcString = Date.parse(date);
    if (isNaN(utcString)) return "";
    return utcString;
}

// 触发数值改变事件
const _triggerChange = function(rowObj, fieldName, oldValue, ctx) {
    _getField(rowObj, fieldName).changed = true
    if (rowObj.status != Row.STATUS.NEW)
        rowObj.setStatus(Row.STATUS.UPDATE)
    if (rowObj.valueChange[fieldName])
        rowObj.valueChange[fieldName](-rowObj.valueChange[fieldName]())
    if (rowObj.parent.getCurrentRow() == rowObj && rowObj.parent.valueChange[fieldName]) {
        rowObj.parent.valueChange[fieldName](-rowObj.parent.valueChange[fieldName]());
    }
    if (rowObj.parent.ns) {
        var fName = rowObj.parent.ns + '.' + fieldName;
        if (rowObj.parent.root.valueChange[fName])
            rowObj.parent.root.valueChange[fName](-rowObj.parent.root.valueChange[fName]());
    }

    var event = {
        eventType: 'dataTableEvent',
        dataTable: rowObj.parent.id,
        rowId: rowObj.rowId,
        field: fieldName,
        oldValue: oldValue,
        newValue: rowObj.getValue(fieldName),
        ctx: ctx || "",
        rowObj: rowObj
    }
    rowObj.parent.trigger(DataTable.ON_VALUE_CHANGE, event);
    rowObj.parent.trigger(fieldName + "." + DataTable.ON_VALUE_CHANGE, event);
    if (rowObj == rowObj.parent.getCurrentRow())
        rowObj.parent.trigger(fieldName + "." + DataTable.ON_CURRENT_VALUE_CHANGE, event);

    // 对于多级字表需要触发顶层div的valuechange事件
    if (rowObj.parent.ns) {
        event.fullField = fName;
        event.ns = rowObj.parent.ns;
        rowObj.parent.root.trigger(DataTable.ON_VALUE_CHANGE, event);
        rowObj.parent.root.trigger(fName + "." + DataTable.ON_VALUE_CHANGE, event);
    }

};

/***
 * 格式化数据值
 * @private
 * @param {Object} field
 * @param {Object} value
 */
const formatValue = function(field, value) {
    var type = this.parent.getMeta(field, 'type')
    if (!type) return value
    if (type == 'date' || type == 'datetime') {
        return _formatDate(value)
    }
    return value
}


// 查找字段
const _findField = function(rowObj, fieldName) {
    var rat = rowObj.data[fieldName];
    if (!rat) {
        var fnames = fieldName.split('.'); //多级field
        if (fnames.length > 1) {
            var tempField = rowObj.data;
            for (var i = 0; i < fnames.length; i++) {
                tempField = tempField[fnames[i]];
                if (tempField.value instanceof DataTable) {
                    var row = tempField.value.getCurrentRow();
                    if (!row) {
                        row = tempField.value.rows()[0]
                    }
                    if (row)
                        tempField = row.data;
                }
                if (!tempField) {
                    break;
                }
            }
            rat = tempField;
        }
    }
    return rat || null;

}

const _getField = function(rowObj, fieldName) {
    var rat = _findField(rowObj, fieldName);
    if (!rat) {
        var msg = 'field:' + fieldName + ' not exist in dataTable:' + rowObj.parent.root.id + '!'
        throw new Error(msg);
    }
    return rat;
}


export const rowUtilFunObj = {
    formatValue: formatValue,
    eq: eq,
    _triggerChange: _triggerChange,
    _getField: _getField,
    _dateToUTCString: _dateToUTCString,
}