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- import panzoom from 'panzoom'
- import { GenNonDuplicateID } from '../until'
- const methods = {
- init () {
- this.jsPlumb.ready(() => {
- // 导入默认配置
- this.jsPlumb.importDefaults(this.jsplumbSetting)
- // 完成连线前的校验
- this.jsPlumb.bind('beforeDrop', evt => {
- let res = () => {} // 此处可以添加是否创建连接的校验, 返回 false 则不添加;
- return res
- })
- // 连线创建成功后,维护本地数据
- this.jsPlumb.bind('connection', evt => {
- this.addLine(evt)
- })
- // 连线双击删除事件
- this.jsPlumb.bind('dblclick', (conn, originalEvent) => {
- this.confirmDelLine(conn)
- })
- // 断开连线后,维护本地数据
- this.jsPlumb.bind('connectionDetached', evt => {
- this.deleLine(evt)
- })
- this.loadEasyFlow()
- // 会使整个jsPlumb立即重绘。
- this.jsPlumb.setSuspendDrawing(false, true)
- })
- this.initPanZoom()
- },
- // 加载流程图
- loadEasyFlow () {
- // 初始化节点
- for (let i = 0; i < this.data.nodeList.length; i++) {
- let node = this.data.nodeList[i]
- // 设置源点,可以拖出线连接其他节点
- this.jsPlumb.makeSource(node.id, this.jsplumbSourceOptions)
- // // 设置目标点,其他源点拖出的线可以连接该节点
- this.jsPlumb.makeTarget(node.id, this.jsplumbTargetOptions)
- // this.jsPlumb.draggable(node.id);
- this.draggableNode(node.id)
- }
- // 初始化连线
- this.jsPlumb.unbind('connection') // 取消连接事件
- for (let i = 0; i < this.data.lineList.length; i++) {
- let line = this.data.lineList[i]
- this.jsPlumb.connect(
- {
- source: line.from,
- target: line.to
- },
- this.jsplumbConnectOptions
- )
- }
- this.jsPlumb.bind('connection', evt => {
- let from = evt.source.id
- let to = evt.target.id
- this.data.lineList.push({
- from: from,
- to: to,
- label: '连线名称',
- id: GenNonDuplicateID(8),
- remark: ''
- })
- })
- },
- draggableNode (nodeId) {
- this.jsPlumb.draggable(nodeId, {
- grid: this.commonGrid,
- drag: params => {
- this.alignForLine(nodeId, params.pos)
- },
- start: () => {},
- stop: params => {
- this.auxiliaryLine.isShowXLine = false
- this.auxiliaryLine.isShowYLine = false
- this.changeNodePosition(nodeId, params.pos)
- }
- })
- },
- // 移动节点时,动态显示对齐线
- alignForLine (nodeId, position) {
- // eslint-disable-next-line one-var
- let showXLine = false,
- showYLine = false
- this.data.nodeList.some(el => {
- if (el.id !== nodeId && el.left === position[0] + 'px') {
- this.auxiliaryLinePos.x = position[0] + 60
- showYLine = true
- }
- if (el.id !== nodeId && el.top === position[1] + 'px') {
- this.auxiliaryLinePos.y = position[1] + 20 + 12.5 // 12.5是节点下方操作人显示栏的高度1/2
- showXLine = true
- }
- })
- this.auxiliaryLine.isShowYLine = showYLine
- this.auxiliaryLine.isShowXLine = showXLine
- },
- changeNodePosition (nodeId, pos) {
- this.data.nodeList.some(v => {
- if (nodeId === v.id) {
- v.left = pos[0] + 'px'
- v.top = pos[1] + 'px'
- return true
- } else {
- return false
- }
- })
- },
- drag (ele, item) {
- this.currentItem = item
- },
- drop (event) {
- const containerRect = this.jsPlumb.getContainer().getBoundingClientRect()
- const scale = this.getScale()
- let left = (event.pageX - containerRect.left - 60) / scale
- let top = (event.pageY - containerRect.top - 20) / scale
- var temp = {
- ...this.currentItem,
- id: GenNonDuplicateID(8),
- top: Math.round(top / 20) * 20 + 'px',
- left: Math.round(left / 20) * 20 + 'px'
- }
- this.addNode(temp)
- },
- addLine (line) {
- let from = line.source.id
- let to = line.target.id
- this.data.lineList.push({
- from: from,
- to: to,
- label: '连线名称',
- id: GenNonDuplicateID(8),
- remark: ''
- })
- },
- confirmDelLine (line) {
- // this.$Modal.confirm({
- // title: '删除连线',
- // content: "<p>确认删除该连线?</p>",
- // onOk: () => {
- // this.jsPlumb.deleteConnection(line)
- // }
- // })
- this.$confirm('确认删除该连线?', '删除连线', {
- confirmButtonText: '确定',
- cancelButtonText: '取消',
- type: 'warning'
- })
- .then(() => {
- this.jsPlumb.deleteConnection(line)
- })
- .catch(() => {
- this.$message({
- type: 'info',
- message: '已取消删除'
- })
- })
- },
- deleLine (line) {
- this.data.lineList.forEach((item, index) => {
- if (item.from === line.sourceId && item.to === line.targetId) {
- this.data.lineList.splice(index, 1)
- }
- })
- },
- // dragover默认事件就是不触发drag事件,取消默认事件后,才会触发drag事件
- allowDrop (event) {
- event.preventDefault()
- },
- getScale () {
- let scale1
- if (this.jsPlumb.pan) {
- const { scale } = this.jsPlumb.pan.getTransform()
- scale1 = scale
- } else {
- const matrix = window.getComputedStyle(this.jsPlumb.getContainer())
- .transform
- scale1 = matrix.split(', ')[3] * 1
- }
- this.jsPlumb.setZoom(scale1)
- return scale1
- },
- // 添加新的节点
- addNode (temp) {
- this.data.nodeList.push(temp)
- this.$nextTick(() => {
- this.jsPlumb.makeSource(temp.id, this.jsplumbSourceOptions)
- this.jsPlumb.makeTarget(temp.id, this.jsplumbTargetOptions)
- this.draggableNode(temp.id)
- })
- },
- initPanZoom () {
- const mainContainer = this.jsPlumb.getContainer()
- const mainContainerWrap = mainContainer.parentNode
- const pan = panzoom(mainContainer, {
- smoothScroll: false,
- bounds: true,
- // autocenter: true,
- zoomDoubleClickSpeed: 1,
- minZoom: 0.5,
- maxZoom: 2,
- // 设置滚动缩放的组合键,默认不需要组合键
- beforeWheel: e => {
- console.log(e)
- // let shouldIgnore = !e.ctrlKey
- // return shouldIgnore
- },
- beforeMouseDown: function (e) {
- // allow mouse-down panning only if altKey is down. Otherwise - ignore
- var shouldIgnore = e.ctrlKey
- return shouldIgnore
- }
- })
- this.jsPlumb.mainContainerWrap = mainContainerWrap
- this.jsPlumb.pan = pan
- // 缩放时设置jsPlumb的缩放比率
- pan.on('zoom', e => {
- const { x, y, scale } = e.getTransform()
- this.jsPlumb.setZoom(scale)
- // 根据缩放比例,缩放对齐辅助线长度和位置
- this.auxiliaryLinePos.width = (1 / scale) * 100 + '%'
- this.auxiliaryLinePos.height = (1 / scale) * 100 + '%'
- this.auxiliaryLinePos.offsetX = -(x / scale)
- this.auxiliaryLinePos.offsetY = -(y / scale)
- })
- pan.on('panend', e => {
- const { x, y, scale } = e.getTransform()
- this.auxiliaryLinePos.width = (1 / scale) * 100 + '%'
- this.auxiliaryLinePos.height = (1 / scale) * 100 + '%'
- this.auxiliaryLinePos.offsetX = -(x / scale)
- this.auxiliaryLinePos.offsetY = -(y / scale)
- })
- // 平移时设置鼠标样式
- mainContainerWrap.style.cursor = 'grab'
- mainContainerWrap.addEventListener('mousedown', function wrapMousedown () {
- this.style.cursor = 'grabbing'
- mainContainerWrap.addEventListener('mouseout', function wrapMouseout () {
- this.style.cursor = 'grab'
- })
- })
- mainContainerWrap.addEventListener('mouseup', function wrapMouseup () {
- this.style.cursor = 'grab'
- })
- },
- setNode (nodeId, node) {
- this.data.nodeList.some(v => {
- if (v.id === nodeId) {
- for (var key in node) {
- v[key] = node[key]
- }
- // v.nodeName = node.nodeName
- return true
- } else {
- return false
- }
- })
- },
- // 删除节点
- deleteNode (node) {
- this.data.nodeList.some((v, index) => {
- if (v.id === node.id) {
- this.data.nodeList.splice(index, 1)
- this.jsPlumb.remove(v.id)
- return true
- } else {
- return false
- }
- })
- },
- // 更改连线状态
- changeLineState (nodeId, val) {
- console.log(val)
- let lines = this.jsPlumb.getAllConnections()
- lines.forEach(line => {
- if (line.targetId === nodeId || line.sourceId === nodeId) {
- if (val) {
- line.canvas.classList.add('active')
- } else {
- line.canvas.classList.remove('active')
- }
- }
- })
- },
- // 初始化节点位置 (以便对齐,居中)
- fixNodesPosition () {
- if (this.data.nodeList && this.$refs.flowWrap) {
- const nodeWidth = 120
- const nodeHeight = 40
- let wrapInfo = this.$refs.flowWrap.getBoundingClientRect()
- // eslint-disable-next-line one-var
- let maxLeft = 0,
- minLeft = wrapInfo.width,
- maxTop = 0,
- minTop = wrapInfo.height
- let nodePoint = {
- left: 0,
- right: 0,
- top: 0,
- bottom: 0
- }
- // eslint-disable-next-line one-var
- let fixTop = 0,
- fixLeft = 0
- this.data.nodeList.forEach(el => {
- let top = Number(el.top.substring(0, el.top.length - 2))
- let left = Number(el.left.substring(0, el.left.length - 2))
- maxLeft = left > maxLeft ? left : maxLeft
- minLeft = left < minLeft ? left : minLeft
- maxTop = top > maxTop ? top : maxTop
- minTop = top < minTop ? top : minTop
- })
- nodePoint.left = minLeft
- nodePoint.right = wrapInfo.width - maxLeft - nodeWidth
- nodePoint.top = minTop
- nodePoint.bottom = wrapInfo.height - maxTop - nodeHeight
- fixTop =
- nodePoint.top !== nodePoint.bottom
- ? (nodePoint.bottom - nodePoint.top) / 2
- : 0
- fixLeft =
- nodePoint.left !== nodePoint.right
- ? (nodePoint.right - nodePoint.left) / 2
- : 0
- this.data.nodeList.map(el => {
- let top = Number(el.top.substring(0, el.top.length - 2)) + fixTop
- let left = Number(el.left.substring(0, el.left.length - 2)) + fixLeft
- el.top = Math.round(top / 20) * 20 + 'px'
- el.left = Math.round(left / 20) * 20 + 'px'
- })
- }
- }
- }
- export default methods
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