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+<script lang="ts" setup>
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+import { ref, onMounted } from 'vue'
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+import { VueFlow, Handle, Position, type Node, Edge } from '@vue-flow/core'
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+import { Background } from '@vue-flow/background'
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+import { post, get } from "@/utils/request";
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+import { GET_STRUCT_BY_TABLE_NAME, GET_ALL_BUS_TABLE, GET_RELATE_TABLE_BY_FROM_COLUMN, GET_RELATE_BUS_TABLE_BY_FROM_TABLE } from "../api"
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+
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+import '@vue-flow/core/dist/style.css';
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+import '@vue-flow/core/dist/theme-default.css';
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+
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+interface selectedNode {
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+ id: string;
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+ data: any
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+}
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+const FixedConfiguration = {
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+ type: 'custom',
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+ style: {
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+ width: '120px', padding: '5px 20px', fontSize: '14px',
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+ border: '1px solid #dcdfe6', borderRadius: '8px'
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+ },
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+ sourcePosition: Position.Right,
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+ targetPosition: Position.Left,
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+ hidden: false
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+}
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+const fixedLabel = {
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+ selected: false, // 是否选中
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+}
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+const connectionType = 'step'
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+const nodes = ref<Node[]>([])
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+const edges = ref<Edge[]>([])
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+const clickedNodes = ref<selectedNode[]>([]) // 记录点击的节点
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+const selectNodes = ref<any[]>([]) // 记录选中的节点
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+
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+const businessTableList = ref<optionType[]>([])
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+const businessObject = ref<any>({})
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+
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+async function onNodeClick(event: any) {
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+ const { x, y } = event.node.position // 点击的位置
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+ const nodeId = event.node.id
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+
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+ // 点击的节点Id
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+ const clickedNodesStr = clickedNodes.value.map(node => node.id)
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+ // 选中的节点Id
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+ const selectNodeIdList = selectNodes.value.map(node => node.id)
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+ // 点击长度相同的节点Id
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+ const clickedNodesLengthStr = clickedNodesStr.filter(strId => strId.length == nodeId.length)
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+
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+ if (clickedNodesStr.includes(nodeId)) {
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+ if (selectNodeIdList.includes(nodeId)) {
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+ for (let i in selectNodeIdList) {
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+ if (nodeId !== selectNodeIdList[i] && nodeId.length === selectNodeIdList[i].length) {
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+ expandNode(selectNodeIdList[i], true)
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+ } else if (nodeId == selectNodeIdList[i]) {
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+ expandNode(nodeId, false)
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+ }
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+ }
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+
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+ const notSelectedToDelete = clickedNodesLengthStr.filter(item => !selectNodeIdList.includes(item));
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+ for (let i in notSelectedToDelete) {
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+ deteleData(notSelectedToDelete[i])
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+ }
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+ }
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+ } else {
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+ clickedNodes.value.push({ id: nodeId, data: event.node.data })
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+ clickedNodesStr.push(nodeId)
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+
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+ // 隐藏和删除其他节点
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+ const hiddenNode = clickedNodesLengthStr.filter(item => selectNodeIdList.includes(item))
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+ const deleteNode = clickedNodesLengthStr.filter(item => !selectNodeIdList.includes(item))
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+
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+ hiddenNode.forEach(item => expandNode(item, true))
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+ deleteNode.forEach(item => deteleData(item))
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+
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+ const eventData = event.node.data
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+ // console.log(eventData.id, '<==== id')
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+ // if(eventData.id) {
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+ const addData = await post(GET_RELATE_BUS_TABLE_BY_FROM_TABLE, { tableName: eventData.tblName })
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+ const fieldList = addData.data || []
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+ AddData(fieldList, x, y, nodeId)
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+ // }
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+
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+ // if(!eventData.id) {
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+ // const tableName = eventData.tblName
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+ // const columnName = eventData.columnName
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+ // const addData = await post(GET_RELATE_TABLE_BY_FROM_COLUMN, { tableName, columnName })
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+ // console.log(addData, '<===== 返回的数据')
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+ // }
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+ }
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+}
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+
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+// 处理级之间的联动勾选
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+function processSelectedNodes(nodeId: string) {
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+ const item = nodes.value.find(item => item.id === nodeId)
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+ if (item?.data?.selected) { // 选中状态将之前的节点选中
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+ const selectNodes = item.id.split('-').map((_: any, index: number, arr: any) => arr.slice(0, index + 1).join('-'));
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+ nodes.value = nodes.value.map(node => {
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+ if (selectNodes.includes(node.id)) {
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+ return {
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+ ...node,
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+ data: { ...node.data, selected: true }
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+ }
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+ } else {
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+ return node
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+ }
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+ })
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+ }
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+
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+ if(!item?.data?.selected) {
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+ const cancelSelectNodes = nodes.value.filter(node => (node.id + '').indexOf((item?.id + '')) !== -1).map(node => node.id)
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+ nodes.value = nodes.value.map(node => {
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+ if (cancelSelectNodes.includes(node.id)) {
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+ return {
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+ ...node,
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+ data: { ...node.data, selected: false }
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+ }
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+ } else {
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+ return node
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+ }
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+ })
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+ }
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+ switchColors()
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+ changeEdgeStyle()
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+}
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+
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+// 更改连线样式
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+function changeEdgeStyle() {
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+ const selectNodeIdList = selectNodes.value.map(node => node.id)
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+ edges.value = edges.value.map(edge => {
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+ const { source, target } = edge
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+ const isSelected = selectNodeIdList.includes(source) && selectNodeIdList.includes(target)
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+ return {
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+ ...edge,
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+ style: {
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+ ...edge.style,
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+ strokeWidth: isSelected ? 4 : 1,
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+ stroke: isSelected ? '#01517f' : '',
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+ class: isSelected ? 'high-z-index' : ''
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+ },
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+ }
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+ })
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+}
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+
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+// 设置选中背景色
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+function switchColors() {
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+ selectNodes.value = nodes.value.filter(node => node.data.selected)
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+ nodes.value = nodes.value.map(node => ({
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+ ...node,
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+ style: {
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+ ...node.style,
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+ backgroundColor: node.data.selected ? '#01517f' : '#fff',
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+ },
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+ }))
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+}
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+
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+// 添加节点和连线数据
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+function AddData(list: any[], x: number, y: number, nodeId: string) {
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+ const newNodes: Node[] = []
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+ const newEdges = [...edges.value]
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+
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+ const spacing = 80
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+ const startY = y - (list.length * spacing) / 2
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+
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+ list.forEach((item, index) => {
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+ const newNodeId = `${nodeId}-${index + 1}` // 生成唯一 ID
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+ const newY = startY + index * spacing
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+
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+ newNodes.push({
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+ id: newNodeId,
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+ data: { label: item.fromColBusName, tblName: item.toTbl, ...item, ...fixedLabel, },
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+ position: { x: x + 240, y: newY },
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+ ...FixedConfiguration,
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+ })
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+
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+ newEdges.push({
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+ id: `e${nodeId}-${newNodeId}`,
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+ source: nodeId,
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+ target: newNodeId,
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+ type: connectionType
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+ })
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+ })
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+
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+ nodes.value = [...nodes.value, ...newNodes]
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+ edges.value = newEdges
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+}
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+
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+// 删除节点和连线数据
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+function deteleData(nodeId: string) {
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+ clickedNodes.value = clickedNodes.value.filter(item => (item.id + '').indexOf(nodeId) === -1)
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+ nodes.value = nodes.value.filter(node => (node.id.indexOf(nodeId) > 0 || (node.id.indexOf(nodeId) === -1 || node.id === nodeId)))
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+ edges.value = edges.value.filter(edge => edge.source !== nodeId && edge.source.indexOf(nodeId) === -1)
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+}
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+
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+// 展开收起节点
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+function expandNode(nodeId: string, val: boolean) {
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+ const filterNodes = nodes.value.filter(node => !(node.id.indexOf(nodeId) > 0 || (node.id.indexOf(nodeId) === -1 || node.id === nodeId))).map(item => item.id)
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+ nodes.value = nodes.value.map(node => {
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+ if (filterNodes.includes(node.id)) {
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+ return {
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+ ...node,
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+ hidden: val
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+ }
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+ } else {
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+ return node
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+ }
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+ })
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+}
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+
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+// 获取所有业务对象
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+function getAllBusTable() {
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+ post(GET_ALL_BUS_TABLE, {}).then(res => {
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+ businessTableList.value = (res.data || []).map((item: any) => {
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+ return {
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+ label: item.name,
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+ value: item.id,
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+ ...item
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+ }
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+ })
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+ })
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+}
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+
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+// 切换事件
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+function businessObjectSwitching(val: any) {
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+ const row = businessTableList.value.find((item: any) => item.id === val)
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+ nodes.value = [{ id: '1', data: { ...row, ...fixedLabel }, position: { x: 100, y: 50 }, ...FixedConfiguration }]
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+ edges.value = []
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+ clickedNodes.value = []
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+ selectNodes.value = []
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+}
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+
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+// 新建初始化数据
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+function initData(row: any) {
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+ businessObject.value = row.id
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+ nodes.value = [{ id: '1', data: { ...row, ...fixedLabel }, position: { x: 100, y: 50 }, ...FixedConfiguration }]
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+ edges.value = []
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+ clickedNodes.value = []
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+ selectNodes.value = []
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+}
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+
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+onMounted(() => {
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+ getAllBusTable()
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+})
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+
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+// 向外暴露方法
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+defineExpose({
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+ initData,
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+});
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+</script>
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+
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+<template>
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+ <div style="width: 100%; height: 100%;" class="relative">
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+ <!-- <div class="flex items-center absolute top-0 left-2 z-10">
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+ <div class="mr-2">业务对象:</div>
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+ <el-select v-model="businessObject" placeholder="请选择" style="width: 200px;" @change="businessObjectSwitching">
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+ <el-option v-for="item in businessTableList" :key="item.value" :label="item.label" :value="item.value" />
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+ </el-select>
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+ </div> -->
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+ <VueFlow :nodes="nodes" :edges="edges" @node-click="onNodeClick" fit-view-on-init :edge-updater-layer="true">
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+ <template #node-custom="{ data, id }">
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+ <div class="flex flex-row">
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+ <Handle class="handle left-handle" type="target" :position="Position.Left" :id="`${id}`" />
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+ <div class="flex items-center">
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+ <el-checkbox v-model="data.selected" size="large" @change="processSelectedNodes(id)" @click.stop
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+ class="pr-2 tops"></el-checkbox>
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+ <span :class="{ 'text-white': data.selected }">{{ data.label }}</span>
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+ </div>
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+ <Handle class="handle right-handle" type="source" :position="Position.Right" :id="`${id}`" />
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+ </div>
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+ </template>
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+ <Background />
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+ </VueFlow>
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+ </div>
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+</template>
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+
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+<style lang='scss' scoped>
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+.tops {
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+ top: 2px
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+}
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+
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+::deep(.vue-flow__node-custom) {
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+ position: relative;
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+}
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+
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+.high-z-index {
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+ position: relative;
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+ z-index: 9999 !important;
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+ /* 提高连线层级 */
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+}
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+</style>
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