import Vue from 'vue'
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function DataTransfer(data) {
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if (!(this instanceof DataTransfer)) {
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return new DataTransfer(data, null, null)
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}
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}
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DataTransfer.treeToArray = function(data, parent, level, expandedAll) {
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let tmp = []
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Array.from(data).forEach(function(record) {
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if (record._expanded === undefined) {
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Vue.set(record, '_expanded', expandedAll)
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}
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if (parent) {
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Vue.set(record, '_parent', parent)
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}
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let _level = 0
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if (level !== undefined && level !== null) {
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_level = level + 1
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}
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Vue.set(record, '_level', _level)
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tmp.push(record)
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if (record.child && record.child.length > 0) {
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const child = DataTransfer.treeToArray(record.child, record, _level, expandedAll)
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// delete record['child']
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tmp = tmp.concat(child)
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}
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})
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return tmp
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}
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export default DataTransfer
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