dykj-uniapp-store/uni_modules/uni-data-picker/components/uni-data-pickerview/uni-data-picker.uts
2024-05-24 09:16:17 +08:00

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export type PaginationType = {
current : number,
size : number,
count : number
}
export type LoadMoreType = {
contentdown : string,
contentrefresh : string,
contentnomore : string
}
export type SelectedItemType = {
name : string,
value : string,
}
export type GetCommandOptions = {
collection ?: UTSJSONObject,
field ?: string,
orderby ?: string,
where ?: any,
pageData ?: string,
pageCurrent ?: number,
pageSize ?: number,
getCount ?: boolean,
getTree ?: any,
getTreePath ?: UTSJSONObject,
startwith ?: string,
limitlevel ?: number,
groupby ?: string,
groupField ?: string,
distinct ?: boolean,
pageIndistinct ?: boolean,
foreignKey ?: string,
loadtime ?: string,
manual ?: boolean
}
const DefaultSelectedNode = {
text: '请选择',
value: ''
}
export const dataPicker = defineMixin({
props: {
localdata: {
type: Array as PropType<Array<UTSJSONObject>>,
default: [] as Array<UTSJSONObject>
},
collection: {
type: Object,
default: ''
},
field: {
type: String,
default: ''
},
orderby: {
type: String,
default: ''
},
where: {
type: Object,
default: ''
},
pageData: {
type: String,
default: 'add'
},
pageCurrent: {
type: Number,
default: 1
},
pageSize: {
type: Number,
default: 20
},
getcount: {
type: Boolean,
default: false
},
gettree: {
type: Object,
default: ''
},
gettreepath: {
type: Object,
default: ''
},
startwith: {
type: String,
default: ''
},
limitlevel: {
type: Number,
default: 10
},
groupby: {
type: String,
default: ''
},
groupField: {
type: String,
default: ''
},
distinct: {
type: Boolean,
default: false
},
pageIndistinct: {
type: Boolean,
default: false
},
foreignKey: {
type: String,
default: ''
},
loadtime: {
type: String,
default: 'auto'
},
manual: {
type: Boolean,
default: false
},
preload: {
type: Boolean,
default: false
},
stepSearh: {
type: Boolean,
default: true
},
selfField: {
type: String,
default: ''
},
parentField: {
type: String,
default: ''
},
multiple: {
type: Boolean,
default: false
},
value: {
type: Object,
default: ''
},
modelValue: {
type: Object,
default: ''
},
defaultProps: {
type: Object as PropType<UTSJSONObject>,
}
},
data() {
return {
loading: false,
error: null as UniCloudError | null,
treeData: [] as Array<UTSJSONObject>,
selectedIndex: 0,
selectedNodes: [] as Array<UTSJSONObject>,
selectedPages: [] as Array<UTSJSONObject>[],
selectedValue: '',
selectedPaths: [] as Array<UTSJSONObject>,
pagination: {
current: 1,
size: 20,
count: 0
} as PaginationType
}
},
computed: {
mappingTextName() : string {
// TODO
return (this.defaultProps != null) ? this.defaultProps!.getString('text', 'text') : 'text'
},
mappingValueName() : string {
// TODO
return (this.defaultProps != null) ? this.defaultProps!.getString('value', 'value') : 'value'
},
currentDataList() : Array<UTSJSONObject> {
if (this.selectedIndex > this.selectedPages.length - 1) {
return [] as Array<UTSJSONObject>
}
return this.selectedPages[this.selectedIndex]
},
isLocalData() : boolean {
return this.localdata.length > 0
},
isCloudData() : boolean {
return this._checkIsNotNull(this.collection)
},
isCloudDataList() : boolean {
return (this.isCloudData && (this.parentField.length == 0 && this.selfField.length == 0))
},
isCloudDataTree() : boolean {
return (this.isCloudData && this.parentField.length > 0 && this.selfField.length > 0)
},
dataValue() : any {
return this.hasModelValue ? this.modelValue : this.value
},
hasCloudTreeData() : boolean {
return this.treeData.length > 0
},
hasModelValue() : boolean {
if (typeof this.modelValue == 'string') {
const valueString = this.modelValue as string
return (valueString.length > 0)
} else if (Array.isArray(this.modelValue)) {
const valueArray = this.modelValue as Array<string>
return (valueArray.length > 0)
}
return false
},
hasCloudDataValue() : boolean {
if (typeof this.dataValue == 'string') {
const valueString = this.dataValue as string
return (valueString.length > 0)
}
return false
}
},
created() {
this.pagination.current = this.pageCurrent
this.pagination.size = this.pageSize
this.$watch(
() : any => [
this.pageCurrent,
this.pageSize,
this.localdata,
this.value,
this.collection,
this.field,
this.getcount,
this.orderby,
this.where,
this.groupby,
this.groupField,
this.distinct
],
(newValue : Array<any>, oldValue : Array<any>) => {
this.pagination.size = this.pageSize
if (newValue[0] !== oldValue[0]) {
this.pagination.current = this.pageCurrent
}
this.onPropsChange()
}
)
},
methods: {
onPropsChange() {
this.selectedIndex = 0
this.treeData.length = 0
this.selectedNodes.length = 0
this.selectedPages.length = 0
this.selectedPaths.length = 0
// 加载数据
this.$nextTick(() => {
this.loadData()
})
},
onTabSelect(index : number) {
this.selectedIndex = index
},
onNodeClick(nodeData : UTSJSONObject) {
if (nodeData.getBoolean('disable', false)) {
return
}
const isLeaf = this._checkIsLeafNode(nodeData)
this._trimSelectedNodes(nodeData)
this.$emit('nodeclick', nodeData)
if (this.isLocalData) {
if (isLeaf || !this._checkHasChildren(nodeData)) {
this.onFinish()
}
} else if (this.isCloudDataList) {
this.onFinish()
} else if (this.isCloudDataTree) {
if (isLeaf) {
this.onFinish()
} else if (!this._checkHasChildren(nodeData)) {
// 尝试请求一次,如果没有返回数据标记为叶子节点
this.loadCloudDataNode(nodeData)
}
}
},
getChangeNodes(): Array<UTSJSONObject> {
const nodes: Array<UTSJSONObject> = []
this.selectedNodes.forEach((node : UTSJSONObject) => {
const newNode: UTSJSONObject = {}
newNode[this.mappingTextName] = node.getString(this.mappingTextName)
newNode[this.mappingValueName] = node.getString(this.mappingValueName)
nodes.push(newNode)
})
return nodes
},
onFinish() { },
// 加载数据(自动判定环境)
loadData() {
if (this.isLocalData) {
this.loadLocalData()
} else if (this.isCloudDataList) {
this.loadCloudDataList()
} else if (this.isCloudDataTree) {
this.loadCloudDataTree()
}
},
// 加载本地数据
loadLocalData() {
this.treeData = this.localdata
if (Array.isArray(this.dataValue)) {
const value = this.dataValue as Array<UTSJSONObject>
this.selectedPaths = value.slice(0)
this._pushSelectedTreeNodes(value, this.localdata)
} else {
this._pushSelectedNodes(this.localdata)
}
},
// 加载 Cloud 数据 (单列)
loadCloudDataList() {
this._loadCloudData(null, (data : Array<UTSJSONObject>) => {
this.treeData = data
this._pushSelectedNodes(data)
})
},
// 加载 Cloud 数据 (树形)
loadCloudDataTree() {
let commandOptions = {
field: this._cloudDataPostField(),
where: this._cloudDataTreeWhere(),
getTree: true
} as GetCommandOptions
if (this._checkIsNotNull(this.gettree)) {
commandOptions.startwith = `${this.selfField}=='${this.dataValue as string}'`
}
this._loadCloudData(commandOptions, (data : Array<UTSJSONObject>) => {
this.treeData = data
if (this.selectedPaths.length > 0) {
this._pushSelectedTreeNodes(this.selectedPaths, data)
} else {
this._pushSelectedNodes(data)
}
})
},
// 加载 Cloud 数据 (节点)
loadCloudDataNode(nodeData : UTSJSONObject) {
const commandOptions = {
field: this._cloudDataPostField(),
where: this._cloudDataNodeWhere()
} as GetCommandOptions
this._loadCloudData(commandOptions, (data : Array<UTSJSONObject>) => {
nodeData['children'] = data
if (data.length == 0) {
nodeData['isleaf'] = true
this.onFinish()
} else {
this._pushSelectedNodes(data)
}
})
},
// 回显 Cloud Tree Path
loadCloudDataPath() {
if (!this.hasCloudDataValue) {
return
}
const command : GetCommandOptions = {}
// 单列
if (this.isCloudDataList) {
// 根据 field's as value标识匹配 where 条件
let where : Array<string> = [];
let whereField = this._getForeignKeyByField();
if (whereField.length > 0) {
where.push(`${whereField} == '${this.dataValue as string}'`)
}
let whereString = where.join(' || ')
if (this._checkIsNotNull(this.where)) {
whereString = `(${this.where}) && (${whereString})`
}
command.field = this._cloudDataPostField()
command.where = whereString
}
// 树形
if (this.isCloudDataTree) {
command.field = this._cloudDataPostField()
command.getTreePath = {
startWith: `${this.selfField}=='${this.dataValue as string}'`
}
}
this._loadCloudData(command, (data : Array<UTSJSONObject>) => {
this._extractTreePath(data, this.selectedPaths)
})
},
_loadCloudData(options ?: GetCommandOptions, callback ?: ((data : Array<UTSJSONObject>) => void)) {
if (this.loading) {
return
}
this.loading = true
this.error = null
this._getCommand(options).then((response : UniCloudDBGetResult) => {
callback?.(response.data)
}).catch((err : any | null) => {
this.error = err as UniCloudError
}).finally(() => {
this.loading = false
})
},
_cloudDataPostField() : string {
let fields = [this.field];
if (this.parentField.length > 0) {
fields.push(`${this.parentField} as parent_value`)
}
return fields.join(',')
},
_cloudDataTreeWhere() : string {
let result : Array<string> = []
let selectedNodes = this.selectedNodes.length > 0 ? this.selectedNodes : this.selectedPaths
let parentField = this.parentField
if (parentField.length > 0) {
result.push(`${parentField} == null || ${parentField} == ""`)
}
if (selectedNodes.length > 0) {
for (var i = 0; i < selectedNodes.length - 1; i++) {
const parentFieldValue = selectedNodes[i].getString('value', '')
result.push(`${parentField} == '${parentFieldValue}'`)
}
}
let where : Array<string> = []
if (this._checkIsNotNull(this.where)) {
where.push(`(${this.where as string})`)
}
if (result.length > 0) {
where.push(`(${result.join(' || ')})`)
}
return where.join(' && ')
},
_cloudDataNodeWhere() : string {
const where : Array<string> = []
if (this.selectedNodes.length > 0) {
const value = this.selectedNodes[this.selectedNodes.length - 1].getString('value', '')
where.push(`${this.parentField} == '${value}'`)
}
let whereString = where.join(' || ')
if (this._checkIsNotNull(this.where)) {
return `(${this.where as string}) && (${whereString})`
}
return whereString
},
_getWhereByForeignKey() : string {
let result : Array<string> = []
let whereField = this._getForeignKeyByField();
if (whereField.length > 0) {
result.push(`${whereField} == '${this.dataValue as string}'`)
}
if (this._checkIsNotNull(this.where)) {
return `(${this.where}) && (${result.join(' || ')})`
}
return result.join(' || ')
},
_getForeignKeyByField() : string {
const fields = this.field.split(',')
let whereField = ''
for (let i = 0; i < fields.length; i++) {
const items = fields[i].split('as')
if (items.length < 2) {
continue
}
if (items[1].trim() === 'value') {
whereField = items[0].trim()
break
}
}
return whereField
},
_getCommand(options ?: GetCommandOptions) : Promise<UniCloudDBGetResult> {
let db = uniCloud.databaseForJQL()
let collection = Array.isArray(this.collection) ? db.collection(...(this.collection as Array<any>)) : db.collection(this.collection)
let filter : UniCloudDBFilter | null = null
if (this.foreignKey.length > 0) {
filter = collection.foreignKey(this.foreignKey)
}
const where : any = options?.where ?? this.where
if (typeof where == 'string') {
const whereString = where as string
if (whereString.length > 0) {
filter = (filter != null) ? filter.where(where) : collection.where(where)
}
} else {
filter = (filter != null) ? filter.where(where) : collection.where(where)
}
let query : UniCloudDBQuery | null = null
if (this.field.length > 0) {
query = (filter != null) ? filter.field(this.field) : collection.field(this.field)
}
if (this.groupby.length > 0) {
if (query != null) {
query = query.groupBy(this.groupby)
} else if (filter != null) {
query = filter.groupBy(this.groupby)
}
}
if (this.groupField.length > 0) {
if (query != null) {
query = query.groupField(this.groupField)
} else if (filter != null) {
query = filter.groupField(this.groupField)
}
}
if (this.distinct == true) {
if (query != null) {
query = query.distinct(this.field)
} else if (filter != null) {
query = filter.distinct(this.field)
}
}
if (this.orderby.length > 0) {
if (query != null) {
query = query.orderBy(this.orderby)
} else if (filter != null) {
query = filter.orderBy(this.orderby)
}
}
const size = this.pagination.size
const current = this.pagination.current
if (query != null) {
query = query.skip(size * (current - 1)).limit(size)
} else if (filter != null) {
query = filter.skip(size * (current - 1)).limit(size)
} else {
query = collection.skip(size * (current - 1)).limit(size)
}
const getOptions = {}
const treeOptions = {
limitLevel: this.limitlevel,
startWith: this.startwith
}
if (this.getcount == true) {
getOptions['getCount'] = this.getcount
}
const getTree : any = options?.getTree ?? this.gettree
if (typeof getTree == 'string') {
const getTreeString = getTree as string
if (getTreeString.length > 0) {
getOptions['getTree'] = treeOptions
}
} else if (typeof getTree == 'object') {
getOptions['getTree'] = treeOptions
} else {
getOptions['getTree'] = getTree
}
const getTreePath = options?.getTreePath ?? this.gettreepath
if (typeof getTreePath == 'string') {
const getTreePathString = getTreePath as string
if (getTreePathString.length > 0) {
getOptions['getTreePath'] = getTreePath
}
} else {
getOptions['getTreePath'] = getTreePath
}
return query.get(getOptions)
},
_checkIsNotNull(value : any) : boolean {
if (typeof value == 'string') {
const valueString = value as string
return (valueString.length > 0)
} else if (value instanceof UTSJSONObject) {
return true
}
return false
},
_checkIsLeafNode(nodeData : UTSJSONObject) : boolean {
if (this.selectedIndex >= this.limitlevel) {
return true
}
if (nodeData.getBoolean('isleaf', false)) {
return true
}
return false
},
_checkHasChildren(nodeData : UTSJSONObject) : boolean {
const children = nodeData.getArray('children') ?? ([] as Array<any>)
return children.length > 0
},
_pushSelectedNodes(nodes : Array<UTSJSONObject>) {
this.selectedNodes.push(DefaultSelectedNode)
this.selectedPages.push(nodes)
this.selectedIndex = this.selectedPages.length - 1
},
_trimSelectedNodes(nodeData : UTSJSONObject) {
this.selectedNodes.splice(this.selectedIndex)
this.selectedNodes.push(nodeData)
if (this.selectedPages.length > 0) {
this.selectedPages.splice(this.selectedIndex + 1)
}
const children = nodeData.getArray<UTSJSONObject>('children') ?? ([] as Array<UTSJSONObject>)
if (children.length > 0) {
this.selectedNodes.push(DefaultSelectedNode)
this.selectedPages.push(children)
}
this.selectedIndex = this.selectedPages.length - 1
},
_pushSelectedTreeNodes(paths : Array<UTSJSONObject>, nodes : Array<UTSJSONObject>) {
let children : Array<UTSJSONObject> = nodes
paths.forEach((node : UTSJSONObject) => {
const findNode = children.find((item : UTSJSONObject) : boolean => {
return (item.getString(this.mappingValueName) == node.getString(this.mappingValueName))
})
if (findNode != null) {
this.selectedPages.push(children)
this.selectedNodes.push(node)
children = findNode.getArray<UTSJSONObject>('children') ?? ([] as Array<UTSJSONObject>)
}
})
this.selectedIndex = this.selectedPages.length - 1
},
_extractTreePath(nodes : Array<UTSJSONObject>, result : Array<UTSJSONObject>) {
if (nodes.length == 0) {
return
}
const node = nodes[0]
result.push(node)
const children = node.getArray<UTSJSONObject>('children')
if (Array.isArray(children) && children!.length > 0) {
this._extractTreePath(children, result)
}
}
}
})