<template>
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<div v-loading="isView" class="flow-containers" :class="{ 'view-mode': isView }">
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<el-container style="height: 100%">
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<el-header style="border-bottom: 1px solid rgb(218 218 218);height: auto;padding-left:0">
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<div style="display: flex; padding: 10px 0; justify-content: space-between;">
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<el-button-group>
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<el-upload action="" :before-upload="openBpmn" style="margin-right: 10px; display:inline-block;">
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<el-tooltip effect="dark" content="加载xml" placement="bottom">
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<el-button size="mini" icon="el-icon-folder-opened" />
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</el-tooltip>
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</el-upload>
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<el-tooltip effect="dark" content="新建" placement="bottom">
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<el-button size="mini" icon="el-icon-circle-plus" @click="newDiagram" />
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</el-tooltip>
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<el-tooltip effect="dark" content="自适应屏幕" placement="bottom">
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<el-button size="mini" icon="el-icon-rank" @click="fitViewport" />
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</el-tooltip>
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<el-tooltip effect="dark" content="放大" placement="bottom">
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<el-button size="mini" icon="el-icon-zoom-in" @click="zoomViewport(true)" />
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</el-tooltip>
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<el-tooltip effect="dark" content="缩小" placement="bottom">
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<el-button size="mini" icon="el-icon-zoom-out" @click="zoomViewport(false)" />
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</el-tooltip>
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<el-tooltip effect="dark" content="后退" placement="bottom">
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<el-button size="mini" icon="el-icon-back" @click="modeler.get('commandStack').undo()" />
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</el-tooltip>
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<el-tooltip effect="dark" content="前进" placement="bottom">
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<el-button size="mini" icon="el-icon-right" @click="modeler.get('commandStack').redo()" />
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</el-tooltip>
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<!-- <el-button size="mini" icon="el-icon-share" @click="processSimulation">-->
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<!-- {{ this.simulationStatus ? '退出模拟' : '开启模拟' }}-->
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<!-- </el-button>-->
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<!-- <el-button size="mini" icon="el-icon-first-aid-kit" @click="handlerIntegrityCheck">-->
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<!-- {{ this.bpmnlintStatus ? '关闭检查' : '开启检查' }}-->
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<!-- </el-button>-->
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</el-button-group>
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<el-button-group>
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<el-button size="mini" icon="el-icon-view" @click="showXML">查看xml</el-button>
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<el-button size="mini" icon="el-icon-download" @click="saveXML(true)">下载xml</el-button>
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<el-button size="mini" icon="el-icon-picture" @click="saveImg('svg', true)">下载svg</el-button>
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<el-button size="mini" type="primary" @click="save">保存模型</el-button>
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<el-button size="mini" type="danger" @click="goBack">关闭</el-button>
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</el-button-group>
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</div>
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</el-header>
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<!-- 流程设计页面 -->
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<el-container style="align-items: stretch">
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<el-main>
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<div ref="canvas" class="canvas" />
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</el-main>
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<!--右侧属性栏-->
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<el-card shadow="never" class="normalPanel">
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<designer v-if="loadCanvas"></designer>
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</el-card>
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</el-container>
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</el-container>
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</div>
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</template>
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<script>
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// 汉化
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import customTranslate from './customPanel/customTranslate'
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import Modeler from 'bpmn-js/lib/Modeler'
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import Designer from './designer'
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import getInitStr from './flowable/init'
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import {StrUtil} from '@/utils/StrUtil'
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// 引入flowable的节点文件
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import FlowableModule from './flowable/flowable.json'
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import customControlsModule from './customPanel'
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export default {
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name: "BpmnModel",
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components: {Designer},
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/** 组件传值 */
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props : {
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xml: {
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type: String,
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default: ''
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},
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isView: {
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type: Boolean,
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default: false
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},
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},
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data() {
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return {
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modeler: null,
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zoom: 1,
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loadCanvas: false, // 当前组件渲染然后再加载canvas
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simulationStatus: false,
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bpmnlintStatus: false,
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simulation: true,
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designer: true,
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}
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},
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/** 传值监听 */
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watch: {
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xml: {
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handler(newVal) {
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if (StrUtil.isNotBlank(newVal)) {
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this.createNewDiagram(newVal)
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} else {
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this.newDiagram()
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}
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},
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immediate: true, // 立即生效
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},
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},
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computed: {
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additionalModules() {
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const Modules = [];
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Modules.push(customControlsModule);
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Modules.push({ //汉化
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translate: ['value', customTranslate]
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});
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return Modules;
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},
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},
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mounted() {
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/** 创建bpmn 实例 */
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const modeler = new Modeler({
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container: this.$refs.canvas,
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additionalModules: this.additionalModules,
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moddleExtensions: {
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flowable: FlowableModule
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},
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keyboard: { bindTo: document },
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})
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this.modeler = modeler;
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// 注册 modeler 相关信息
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this.modelerStore.modeler = modeler;
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this.modelerStore.modeling = modeler.get("modeling");
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this.modelerStore.moddle = modeler.get("moddle");
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this.modelerStore.canvas = modeler.get("canvas");
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this.modelerStore.bpmnFactory = modeler.get("bpmnFactory");
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this.modelerStore.elRegistry = modeler.get("elementRegistry");
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// 直接点击新建按钮时,进行新增流程图
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if (StrUtil.isBlank(this.xml)) {
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this.newDiagram()
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} else {
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this.createNewDiagram(this.xml)
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}
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},
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methods: {
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// 根据默认文件初始化流程图
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newDiagram() {
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this.createNewDiagram(getInitStr())
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},
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// 根据提供的xml创建流程图
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async createNewDiagram(data) {
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// 将字符串转换成图显示出来
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// data = data.replace(/<!\[CDATA\[(.+?)]]>/g, '<![CDATA[$1]]>')
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if (StrUtil.isNotBlank(this.modelerStore.modeler)) {
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data = data.replace(/<!\[CDATA\[(.+?)]]>/g, function (match, str) {
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return str.replace(/</g, '<')
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}
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)
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try {
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await this.modelerStore.modeler.importXML(data)
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this.fitViewport()
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} catch (err) {
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console.error(err.message, err.warnings)
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}
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}
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},
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// 让图能自适应屏幕
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fitViewport() {
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this.zoom = this.modelerStore.canvas.zoom('fit-viewport')
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const bbox = document.querySelector('.flow-containers .viewport').getBBox()
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const currentViewBox = this.modelerStore.canvas.viewbox()
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const elementMid = {
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x: bbox.x + bbox.width / 2 - 65,
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y: bbox.y + bbox.height / 2
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}
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this.modelerStore.canvas.viewbox({
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x: elementMid.x - currentViewBox.width / 2,
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y: elementMid.y - currentViewBox.height / 2,
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width: currentViewBox.width,
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height: currentViewBox.height
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})
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this.zoom = bbox.width / currentViewBox.width * 1.8
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this.loadCanvas = true;
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},
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// 放大缩小
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zoomViewport(zoomIn = true) {
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this.zoom = this.modelerStore.canvas.zoom()
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this.zoom += (zoomIn ? 0.1 : -0.1)
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this.modelerStore.canvas.zoom(this.zoom)
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},
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// 获取流程基础信息
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getProcess() {
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const element = this.getProcessElement()
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return {
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id: element.id,
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name: element.name,
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category: element.processCategory
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}
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},
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// 获取流程主面板节点
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getProcessElement() {
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const rootElements = this.modelerStore.modeler.getDefinitions().rootElements
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for (let i = 0; i < rootElements.length; i++) {
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if (rootElements[i].$type === 'bpmn:Process') return rootElements[i]
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}
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},
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// 保存xml
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async saveXML(download = false) {
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try {
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const {xml} = await this.modelerStore.modeler.saveXML({format: true})
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if (download) {
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this.downloadFile(`${this.getProcessElement().name}.bpmn20.xml`, xml, 'application/xml')
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}
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return xml
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} catch (err) {
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console.log(err)
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}
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},
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// 在线查看xml
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async showXML() {
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try {
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const xmlStr = await this.saveXML()
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this.$emit('showXML', xmlStr)
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} catch (err) {
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console.log(err)
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}
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},
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// 保存流程图为svg
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async saveImg(type = 'svg', download = false) {
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try {
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const {svg} = await this.modelerStore.modeler.saveSVG({format: true})
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if (download) {
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this.downloadFile(this.getProcessElement().name, svg, 'image/svg+xml')
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}
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return svg
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} catch (err) {
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console.log(err)
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}
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},
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// 保存流程图
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async save() {
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const process = this.getProcess()
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const xml = await this.saveXML()
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const svg = await this.saveImg()
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const result = {process, xml, svg}
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this.$emit('save', result)
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window.parent.postMessage(result, '*')
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this.goBack();
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},
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// 打开流程文件
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openBpmn(file) {
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const reader = new FileReader()
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reader.readAsText(file, 'utf-8')
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reader.onload = () => {
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this.createNewDiagram(reader.result)
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}
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return false
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},
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// 下载流程文件
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downloadFile(filename, data, type) {
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const a = document.createElement('a');
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const url = window.URL.createObjectURL(new Blob([data], {type: type}));
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a.href = url
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a.download = filename
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a.click()
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window.URL.revokeObjectURL(url)
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},
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/** 关闭当前标签页并返回上个页面 */
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goBack() {
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const obj = {path: "/flowable/definition", query: {t: Date.now()}};
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this.$tab.closeOpenPage(obj);
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this.toggleSideBar();
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},
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}
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}
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</script>
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<style lang="scss">
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/*左边工具栏以及编辑节点的样式*/
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@import "~bpmn-js/dist/assets/diagram-js.css";
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@import "~bpmn-js/dist/assets/bpmn-font/css/bpmn.css";
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@import "~bpmn-js/dist/assets/bpmn-font/css/bpmn-codes.css";
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@import "~bpmn-js/dist/assets/bpmn-font/css/bpmn-embedded.css";
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//@import "~bpmn-js-bpmnlint/dist/assets/css/bpmn-js-bpmnlint.css";
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.view-mode {
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.el-header, .el-aside, .djs-palette, .bjs-powered-by {
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display: none;
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}
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.el-loading-mask {
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background-color: initial;
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}
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.el-loading-spinner {
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display: none;
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}
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}
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.flow-containers {
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width: 100%;
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height: 100%;
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.canvas {
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min-height: 850px;
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width: 100%;
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height: 100%;
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background: url("data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iNDAiIGhlaWdodD0iNDAiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyI+PGRlZnM+PHBhdHRlcm4gaWQ9ImEiIHdpZHRoPSI0MCIgaGVpZ2h0PSI0MCIgcGF0dGVyblVuaXRzPSJ1c2VyU3BhY2VPblVzZSI+PHBhdGggZD0iTTAgMTBoNDBNMTAgMHY0ME0wIDIwaDQwTTIwIDB2NDBNMCAzMGg0ME0zMCAwdjQwIiBmaWxsPSJub25lIiBzdHJva2U9IiNlMGUwZTAiIG9wYWNpdHk9Ii4yIi8+PHBhdGggZD0iTTQwIDBIMHY0MCIgZmlsbD0ibm9uZSIgc3Ryb2tlPSIjZTBlMGUwIi8+PC9wYXR0ZXJuPjwvZGVmcz48cmVjdCB3aWR0aD0iMTAwJSIgaGVpZ2h0PSIxMDAlIiBmaWxsPSJ1cmwoI2EpIi8+PC9zdmc+")
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}
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.panel {
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position: absolute;
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right: 0;
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top: 50px;
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width: 300px;
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}
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.load {
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margin-right: 10px;
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}
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.normalPanel {
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width: 460px;
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height: 100%;
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padding: 20px 20px;
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}
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.el-main {
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position: relative;
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padding: 0;
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}
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.el-main .button-group {
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display: flex;
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flex-direction: column;
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position: absolute;
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width: auto;
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height: auto;
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top: 10px;
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right: 10px;
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}
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.button-group .el-button {
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width: 100%;
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margin: 0 0 5px;
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}
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}
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</style>
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