46 lines
1.5 KiB
Java
46 lines
1.5 KiB
Java
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var helperCreateTreeFunc = require('./helperCreateTreeFunc')
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var arrayEach = require('./arrayEach')
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var assign = require('../object/assign')
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function searchTreeItem (parentAllow, parent, obj, iterate, context, path, node, parseChildren, opts) {
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var paths, nodes, rest, isAllow, hasChild
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var rests = []
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var hasOriginal = opts.original
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var mapChildren = opts.mapChildren || parseChildren
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arrayEach(obj, function (item, index) {
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paths = path.concat(['' + index])
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nodes = node.concat([item])
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isAllow = parentAllow || iterate.call(context, item, index, obj, paths, parent, nodes)
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hasChild = parseChildren && item[parseChildren]
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if (isAllow || hasChild) {
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rest = hasOriginal ? item : assign({}, item)
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}
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if (isAllow || hasChild) {
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rest[mapChildren] = searchTreeItem(isAllow, item, item[parseChildren], iterate, context, paths, nodes, parseChildren, opts)
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if (isAllow || rest[mapChildren].length) {
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rests.push(rest)
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}
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} else if (isAllow) {
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rests.push(rest)
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}
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})
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return rests
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}
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/**
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* 从树结构中根据回调查找数据
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*
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* @param {Object} obj 对象/数组
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* @param {Function} iterate(item, index, items, path, parent, nodes) 回调
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* @param {Object} options {children: 'children'}
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* @param {Object} context 上下文
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* @return {Array}
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*/
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var searchTree = helperCreateTreeFunc(function (parent, obj, iterate, context, path, nodes, parseChildren, opts) {
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return searchTreeItem(0, parent, obj, iterate, context, path, nodes, parseChildren, opts)
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})
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module.exports = searchTree
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