ProcessViewer.vue
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<template>
<div class="my-process-designer">
<div class="my-process-designer__container">
<div class="my-process-designer__canvas" ref="bpmn-canvas"></div>
</div>
</div>
</template>
<script>
import BpmnViewer from "bpmn-js/lib/Viewer";
import DefaultEmptyXML from "./plugins/defaultEmpty";
export default {
name: "MyProcessViewer",
componentName: "MyProcessViewer",
props: {
value: String, // xml 字符串
prefix: {
type: String,
default: "camunda"
},
taskData: {
type: Array,
default: () => []
}
},
data() {
return {
xml: '',
tasks: [],
};
},
mounted() {
this.xml = this.value;
this.tasks = this.taskData;
// 初始化
this.initBpmnModeler();
this.createNewDiagram(this.xml);
this.$once("hook:beforeDestroy", () => {
if (this.bpmnModeler) this.bpmnModeler.destroy();
this.$emit("destroy", this.bpmnModeler);
this.bpmnModeler = null;
});
},
watch: {
value: function (newValue) { // 在 xmlString 发生变化时，重新创建，从而绘制流程图
this.xml = newValue;
this.createNewDiagram(this.xml);
},
taskData: function (newTaskData) {
this.tasks = newTaskData;
this.createNewDiagram(this.xml);
}
},
methods: {
initBpmnModeler() {
if (this.bpmnModeler) return;
this.bpmnModeler = new BpmnViewer({
container: this.$refs["bpmn-canvas"],
bpmnRenderer: {
}
})
},
/* 创建新的流程图 */
async createNewDiagram(xml) {
// 将字符串转换成图显示出来
let newId = `Process_${new Date().getTime()}`;
let newName = `业务流程_${new Date().getTime()}`;
let xmlString = xml || DefaultEmptyXML(newId, newName, this.prefix);
try {
// console.log(this.bpmnModeler.importXML);
let { warnings } = await this.bpmnModeler.importXML(xmlString);
if (warnings && warnings.length) {
warnings.forEach(warn => console.warn(warn));
}
// 高亮流程图
await this.highlightDiagram();
} catch (e) {
console.error(e);
// console.error(`[Process Designer Warn]: ${e?.message || e}`);
}
},
/* 高亮流程图 */
async highlightDiagram() {
if (this.tasks.length === 0) {
return;
}
if (!this.bpmnModeler.getDefinitions().rootElements[0].flowElements) {
return;
}
// 参考自 https://gitee.com/tony2y/RuoYi-flowable/blob/master/ruoyi-ui/src/components/Process/index.vue#L222 实现
let canvas = this.bpmnModeler.get('canvas');
this.bpmnModeler.getDefinitions().rootElements[0].flowElements?.forEach(n => {
let completeTask = this.tasks.find(m => m.definitionKey === n.id)
let todoTask = this.tasks.find(m => !m.endTime)
let endTask = this.tasks[this.tasks.length - 1]
if (n.$type === 'bpmn:UserTask') {
if (completeTask) {
canvas.addMarker(n.id, completeTask.endTime ? 'highlight' : 'highlight-todo');
// console.log(n.id + ' : ' + (completeTask.endTime ? 'highlight' : 'highlight-todo'));
n.outgoing?.forEach(nn => {
let targetTask = this.tasks.find(m => m.definitionKey === nn.targetRef.id)
if (targetTask) {
canvas.addMarker(nn.id, targetTask.endTime ? 'highlight' : 'highlight-todo');
} else if (nn.targetRef.$type === 'bpmn:ExclusiveGateway') {
// canvas.addMarker(nn.id, 'highlight');
canvas.addMarker(nn.id, completeTask.endTime ? 'highlight' : 'highlight-todo');
canvas.addMarker(nn.targetRef.id, completeTask.endTime ? 'highlight' : 'highlight-todo');
} else if (nn.targetRef.$type === 'bpmn:EndEvent') {
if (!todoTask && endTask.definitionKey === n.id) {
canvas.addMarker(nn.id, 'highlight');
canvas.addMarker(nn.targetRef.id, 'highlight');
}
if (!completeTask.endTime) {
canvas.addMarker(nn.id, 'highlight-todo');
canvas.addMarker(nn.targetRef.id, 'highlight-todo');
}
}
});
}
} else if (n.$type === 'bpmn:ExclusiveGateway') {
n.outgoing?.forEach(nn => {
let targetTask = this.tasks.find(m => m.definitionKey === nn.targetRef.id)
if (targetTask) {
canvas.addMarker(nn.id, targetTask.endTime ? 'highlight' : 'highlight-todo');
}
})
} else if (n.$type === 'bpmn:ParallelGateway') {
if (completeTask) {
canvas.addMarker(n.id, completeTask.endTime ? 'highlight' : 'highlight-todo')
n.outgoing?.forEach(nn => {
const targetTask = this.taskList.find(m => m.definitionKey === nn.targetRef.id)
if (targetTask) {
canvas.addMarker(nn.id, targetTask.endTime ? 'highlight' : 'highlight-todo')
canvas.addMarker(nn.targetRef.id, targetTask.endTime ? 'highlight' : 'highlight-todo')
}
})
}
} else if (n.$type === 'bpmn:StartEvent') {
n.outgoing?.forEach(nn => {
let completeTask = this.tasks.find(m => m.definitionKey === nn.targetRef.id)
if (completeTask) {
canvas.addMarker(nn.id, 'highlight');
canvas.addMarker(n.id, 'highlight');
return
}
});
} else if (n.$type === 'bpmn:EndEvent') {
if (endTask.definitionKey === n.id && endTask.endTime) {
canvas.addMarker(n.id, 'highlight')
return
}
}
})
}
}
};
</script>
<style>
.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;
}
.highlight-todo.djs-shape .djs-visual > :nth-child(1) {
fill: orange !important;
stroke: orange !important;
stroke-dasharray: 4px !important;
fill-opacity: 0.2 !important;
}
.highlight:not(.djs-connection) .djs-visual > :nth-child(1) {
fill: green !important; /* color elements as green */
}
/deep/.highlight.djs-shape .djs-visual > :nth-child(1) {
fill: green !important;
stroke: green !important;
fill-opacity: 0.2 !important;
}
/deep/.highlight.djs-shape .djs-visual > :nth-child(2) {
fill: green !important;
}
/deep/.highlight.djs-shape .djs-visual > path {
fill: green !important;
fill-opacity: 0.2 !important;
stroke: green !important;
}
/deep/.highlight.djs-connection > .djs-visual > path {
stroke: green !important;
}
/deep/.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);
}
/deep/.highlight-todo.djs-shape .djs-visual > :nth-child(1) {
fill: orange !important;
stroke: orange !important;
stroke-dasharray: 4px !important;
fill-opacity: 0.2 !important;
}
</style>