From 97b4eef342effb892622d2834658dbf489254590 Mon Sep 17 00:00:00 2001
From: LiuHao <liuhaoai545@gmail.com>
Date: Fri, 8 Mar 2024 16:02:08 +0800
Subject: [PATCH] =?UTF-8?q?update=20=20=E4=BD=BF=E7=94=A8bpmnjs=E6=B5=81?=
 =?UTF-8?q?=E7=A8=8B=E9=A2=84=E8=A7=88?=
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---
 src/components/BpmnView/index.vue | 361 ++++++++++++++++++++++++++++++
 1 file changed, 361 insertions(+)
 create mode 100644 src/components/BpmnView/index.vue

diff --git a/src/components/BpmnView/index.vue b/src/components/BpmnView/index.vue
new file mode 100644
index 0000000..ee0eaa6
--- /dev/null
+++ b/src/components/BpmnView/index.vue
@@ -0,0 +1,361 @@
+<template>
+  <el-dialog v-if="bpmnVisible" v-model="bpmnVisible" title="流程进度" append-to-body width="90%" @opened="init(undefined)">
+    <div v-loading="loading" class="bpmnDialogContainers">
+      <el-header style="border-bottom: 1px solid rgb(218 218 218); height: auto">
+        <div class="header-div">
+          <div>
+            <el-tooltip effect="dark" content="自适应屏幕" placement="bottom">
+              <el-button size="small" icon="Rank" @click="fitViewport" />
+            </el-tooltip>
+            <el-tooltip effect="dark" content="放大" placement="bottom">
+              <el-button size="small" icon="ZoomIn" @click="zoomViewport(true)" />
+            </el-tooltip>
+            <el-tooltip effect="dark" content="缩小" placement="bottom">
+              <el-button size="small" icon="ZoomOut" @click="zoomViewport(false)" />
+            </el-tooltip>
+          </div>
+          <div>
+            <div class="tips-label">
+              <div class="un-complete">未完成</div>
+              <div class="in-progress">进行中</div>
+              <div class="complete">已完成</div>
+            </div>
+          </div>
+        </div>
+      </el-header>
+      <div class="flow-containers">
+        <el-container class="bpmn-el-container" style="align-items: stretch">
+          <el-main style="padding: 0">
+            <div ref="canvas" class="canvas" />
+          </el-main>
+        </el-container>
+      </div>
+    </div>
+  </el-dialog>
+</template>
+
+<script lang="ts" setup>
+import BpmnViewer from 'bpmn-js/lib/Viewer';
+import MoveCanvasModule from 'diagram-js/lib/navigation/movecanvas';
+import ZoomScrollModule from 'diagram-js/lib/navigation/zoomscroll';
+import { ModuleDeclaration } from 'didi';
+import { Canvas, ModdleElement } from 'bpmn';
+import defaultXML from '@/components/BpmnDesign/assets/defaultXML';
+import EventBus from 'diagram-js/lib/core/EventBus';
+import Overlays from 'diagram-js/lib/features/overlays/Overlays';
+import processApi from '@/api/workflow/processInstance/index';
+
+const canvas = ref<HTMLElement>();
+const modeler = ref<BpmnViewer>();
+const taskList = ref([]);
+const zoom = ref(1);
+const xml = ref('');
+const loading = ref(false);
+const bpmnVisible = ref(true);
+const historyList = ref([]);
+const init = (instanceId) => {
+  loading.value = true;
+  bpmnVisible.value = true;
+  nextTick(() => {
+    if (modeler.value) modeler.value.destroy();
+    modeler.value = new BpmnViewer({
+      container: canvas.value,
+      additionalModules: [
+        {
+          //禁止滚轮滚动
+          zoomScroll: ['value', '']
+        },
+        ZoomScrollModule,
+        MoveCanvasModule
+      ] as ModuleDeclaration[]
+    });
+    processApi.getHistoryList(instanceId).then((resp) => {
+      xml.value = resp.data.xml;
+      taskList.value = resp.data.taskList;
+      historyList.value = resp.data.historyList;
+      // createDiagram(xml);
+      console.log(resp);
+    });
+    createDiagram(defaultXML);
+    loading.value = false;
+  });
+};
+
+const createDiagram = async (data) => {
+  try {
+    await modeler.value.importXML(data);
+    fitViewport();
+    fillColor();
+    loading.value = false;
+    addEventBusListener();
+  } catch (err) {
+    //console.error(err.message, err.warnings)
+  }
+};
+const addEventBusListener = () => {
+  const eventBus = modeler.value.get<EventBus>('eventBus');
+  const overlays = modeler.value.get<Overlays>('overlays');
+  eventBus.on<ModdleElement>('element.hover', (e) => {
+    let data = historyList.value.find((t) => t.taskDefinitionKey === e.element.id);
+    if (e.element.type === 'bpmn:UserTask' && data) {
+      setTimeout(() => {
+        genNodeDetailBox(e, overlays, data);
+      }, 10);
+    }
+  });
+  eventBus.on('element.out', (e) => {
+    overlays.clear();
+  });
+};
+const genNodeDetailBox = (e, overlays, data) => {
+  overlays.add(e.element.id, {
+    position: { top: e.element.height, left: 0 },
+    html: `<div class="verlays">
+                    <p>审批人员: ${data.nickName || ''}<p/>
+                    <p>节点状态：${data.status || ''}</p>
+                    <p>开始时间：${data.startTime || ''}</p>
+                    <p>结束时间：${data.endTime || ''}</p>
+                    <p>审批耗时：${data.runDuration || ''}</p>
+                   </div>`
+  });
+};
+// 让图能自适应屏幕
+const fitViewport = () => {
+  zoom.value = modeler.value.get<Canvas>('canvas').zoom('fit-viewport');
+  const bbox = document.querySelector<SVGGElement>('.flow-containers .viewport').getBBox();
+  const currentViewBox = modeler.value.get('canvas').viewbox();
+  const elementMid = {
+    x: bbox.x + bbox.width / 2 - 65,
+    y: bbox.y + bbox.height / 2
+  };
+  modeler.value.get<Canvas>('canvas').viewbox({
+    x: elementMid.x - currentViewBox.width / 2,
+    y: elementMid.y - currentViewBox.height / 2,
+    width: currentViewBox.width,
+    height: currentViewBox.height
+  });
+  zoom.value = (bbox.width / currentViewBox.width) * 1.8;
+};
+// 放大缩小
+const zoomViewport = (zoomIn = true) => {
+  zoom.value = modeler.value.get<Canvas>('canvas').zoom();
+  zoom.value += zoomIn ? 0.1 : -0.1;
+  modeler.value.get<Canvas>('canvas').zoom(zoom.value);
+};
+//上色
+const fillColor = () => {
+  const canvas = modeler.value.get<Canvas>('canvas');
+  bpmnNodeList(modeler.value._definitions.rootElements[0].flowElements, canvas);
+};
+//递归上色
+const bpmnNodeList = (flowElements, canvas) => {
+  flowElements.forEach((n) => {
+    if (n.$type === 'bpmn:UserTask') {
+      const completeTask = taskList.value.find((m) => m.key === n.id);
+      if (completeTask) {
+        canvas.addMarker(n.id, completeTask.completed ? 'highlight' : 'highlight-todo');
+        n.outgoing?.forEach((nn) => {
+          const targetTask = taskList.value.find((m) => m.key === nn.targetRef.id);
+          if (targetTask) {
+            canvas.addMarker(nn.id, targetTask.completed ? 'highlight' : 'highlight-todo');
+          } else if (nn.targetRef.$type === 'bpmn:ExclusiveGateway') {
+            canvas.addMarker(nn.id, completeTask.completed ? 'highlight' : 'highlight-todo');
+            canvas.addMarker(nn.targetRef.id, completeTask.completed ? 'highlight' : 'highlight-todo');
+            nn.targetRef.outgoing.forEach((e) => {
+              getway(e.id, e.targetRef.$type, e.targetRef.id, canvas, completeTask.completed);
+            });
+          } else if (nn.targetRef.$type === 'bpmn:ParallelGateway') {
+            canvas.addMarker(nn.id, completeTask.completed ? 'highlight' : 'highlight-todo');
+            canvas.addMarker(nn.targetRef.id, completeTask.completed ? 'highlight' : 'highlight-todo');
+            nn.targetRef.outgoing.forEach((e) => {
+              getway(e.id, e.targetRef.$type, e.targetRef.id, canvas, completeTask.completed);
+            });
+          } else if (nn.targetRef.$type === 'bpmn:InclusiveGateway') {
+            canvas.addMarker(nn.id, completeTask.completed ? 'highlight' : 'highlight-todo');
+            canvas.addMarker(nn.targetRef.id, completeTask.completed ? 'highlight' : 'highlight-todo');
+            nn.targetRef.outgoing.forEach((e) => {
+              getway(e.id, e.targetRef.$type, e.targetRef.id, canvas, completeTask.completed);
+            });
+          }
+        });
+      }
+    } else if (n.$type === 'bpmn:ExclusiveGateway') {
+      n.outgoing.forEach((nn) => {
+        const targetTask = taskList.value.find((m) => m.key === nn.targetRef.id);
+        if (targetTask) {
+          canvas.addMarker(nn.id, targetTask.completed ? 'highlight' : 'highlight-todo');
+        }
+      });
+    } else if (n.$type === 'bpmn:ParallelGateway') {
+      n.outgoing.forEach((nn) => {
+        const targetTask = taskList.value.find((m) => m.key === nn.targetRef.id);
+        if (targetTask) {
+          canvas.addMarker(nn.id, targetTask.completed ? 'highlight' : 'highlight-todo');
+        }
+      });
+    } else if (n.$type === 'bpmn:InclusiveGateway') {
+      n.outgoing.forEach((nn) => {
+        const targetTask = taskList.value.find((m) => m.key === nn.targetRef.id);
+        if (targetTask) {
+          canvas.addMarker(nn.id, targetTask.completed ? 'highlight' : 'highlight-todo');
+        }
+      });
+    } else if (n.$type === 'bpmn:SubProcess') {
+      const completeTask = taskList.value.find((m) => m.key === n.id);
+      if (completeTask) {
+        canvas.addMarker(n.id, completeTask.completed ? 'highlight' : 'highlight-todo');
+      }
+      bpmnNodeList(n.flowElements, canvas);
+    } else if (n.$type === 'bpmn:StartEvent') {
+      n.outgoing.forEach((nn) => {
+        const completeTask = taskList.value.find((m) => m.key === nn.targetRef.id);
+        if (completeTask) {
+          canvas.addMarker(nn.id, 'highlight');
+          canvas.addMarker(n.id, 'highlight');
+          return;
+        }
+      });
+    } else if (n.$type === 'bpmn:EndEvent') {
+      const completeTask = taskList.value.find((m) => m.key === n.id);
+      if (completeTask) {
+        canvas.addMarker(completeTask.key, 'highlight');
+        canvas.addMarker(n.id, 'highlight');
+        return;
+      }
+    }
+  });
+};
+const getway = (id, targetRefType, targetRefId, canvas, completed) => {
+  if (targetRefType === 'bpmn:ExclusiveGateway') {
+    canvas.addMarker(id, completed ? 'highlight' : 'highlight-todo');
+    canvas.addMarker(targetRefId, completed ? 'highlight' : 'highlight-todo');
+  }
+  if (targetRefType === 'bpmn:ParallelGateway') {
+    canvas.addMarker(id, completed ? 'highlight' : 'highlight-todo');
+    canvas.addMarker(targetRefId, completed ? 'highlight' : 'highlight-todo');
+  }
+  if (targetRefType === 'bpmn:InclusiveGateway') {
+    canvas.addMarker(id, completed ? 'highlight' : 'highlight-todo');
+    canvas.addMarker(targetRefId, completed ? 'highlight' : 'highlight-todo');
+  }
+};
+</script>
+
+<style lang="scss">
+.canvas {
+  width: 100%;
+  height: 100%;
+}
+
+.header-div {
+  display: flex;
+  padding: 10px 0;
+  justify-content: space-between;
+
+  .tips-label {
+    display: flex;
+    div {
+      margin-right: 10px;
+      padding: 5px;
+      font-size: 12px;
+    }
+    .un-complete {
+      border: 1px dashed #000;
+    }
+    .in-progress {
+      background-color: rgb(255, 237, 204);
+      border: 1px dashed orange;
+    }
+    .complete {
+      background-color: rgb(204, 230, 204);
+      border: 1px dashed green;
+    }
+  }
+}
+
+.view-mode {
+  .el-header,
+  .el-aside,
+  .djs-palette,
+  .bjs-powered-by {
+    display: none;
+  }
+  .el-loading-mask {
+    background-color: initial;
+  }
+  .el-loading-spinner {
+    display: none;
+  }
+}
+.bpmn-el-container {
+  height: 500px;
+}
+.flow-containers {
+  width: 100%;
+  height: 100%;
+  overflow-y: auto;
+  .canvas {
+    width: 100%;
+    height: 100%;
+  }
+  .load {
+    margin-right: 10px;
+  }
+  .el-form-item__label {
+    font-size: 13px;
+  }
+
+  .djs-palette {
+    left: 0 !important;
+    top: 0;
+    border-top: none;
+  }
+
+  .djs-container svg {
+    min-height: 650px;
+  }
+
+  .highlight.djs-shape .djs-visual > :nth-child(1) {
+    fill: green !important;
+    stroke: green !important;
+    fill-opacity: 0.2 !important;
+  }
+  .highlight.djs-shape .djs-visual > :nth-child(2) {
+    fill: green !important;
+  }
+  .highlight.djs-shape .djs-visual > path {
+    fill: green !important;
+    fill-opacity: 0.2 !important;
+    stroke: green !important;
+  }
+  .highlight.djs-connection > .djs-visual > path {
+    stroke: green !important;
+  }
+  .highlight-todo.djs-connection > .djs-visual > path {
+    stroke: orange !important;
+    stroke-dasharray: 4px !important;
+    fill-opacity: 0.2 !important;
+    marker-end: url(#sequenceflow-end-_E7DFDF-_E7DFDF-803g1kf6zwzmcig1y2ulm5egr);
+  }
+  .highlight-todo.djs-shape .djs-visual > :nth-child(1) {
+    fill: orange !important;
+    stroke: orange !important;
+    stroke-dasharray: 4px !important;
+    fill-opacity: 0.2 !important;
+  }
+}
+.verlays {
+  width: 250px;
+  background: rgb(102, 102, 102);
+  border-radius: 4px;
+  border: 1px solid #ebeef5;
+  //padding: 12px;
+  color: #fff;
+  padding: 15px 10px;
+  p {
+    line-height: 28px;
+    margin: 0;
+    padding: 0;
+  }
+}
+</style>