perf: bpm 流程模型表单代码优化. 去掉大量watch 代码. 用依赖注入替换props 传递流程数据. 增加导入导出

Author: zws-code

src/components/SimpleProcessDesignerV2/src/SimpleProcessDesigner.vue

@@ -40,7 +40,7 @@ defineOptions({
   name: 'SimpleProcessDesigner'
 })
 
-const emits = defineEmits(['success', 'init-finished']) // 保存成功事件
+const emits = defineEmits(['success']) // 保存成功事件
 
 const props = defineProps({
   modelId: {
@@ -59,13 +59,12 @@ const props = defineProps({
   startUserIds : {
     type: Array,
     required: false
-  },
-  value: {
-    type: [String, Object],
-    required: false
   }
 })
 
+const processData = inject('processData') as Ref
+
+
 const loading = ref(false)
 const formFields = ref<string[]>([])
 const formType = ref(20)
@@ -76,9 +75,6 @@ const deptOptions = ref<DeptApi.DeptVO[]>([]) // 部门列表
 const deptTreeOptions = ref()
 const userGroupOptions = ref<UserGroupApi.UserGroupVO[]>([]) // 用户组列表
 
-// 添加当前值的引用
-const currentValue = ref<SimpleFlowNode | undefined>()
-
 provide('formFields', formFields)
 provide('formType', formType)
 provide('roleList', roleOptions)
@@ -88,7 +84,8 @@ provide('deptList', deptOptions)
 provide('userGroupList', userGroupOptions)
 provide('deptTree', deptTreeOptions)
 provide('startUserIds', props.startUserIds)
-
+provide('tasks', [])
+provide('processInstance', {})
 const message = useMessage() // 国际化
 const processNodeTree = ref<SimpleFlowNode | undefined>()
 const errorDialogVisible = ref(false)
@@ -112,70 +109,14 @@ const updateModel = () => {
   }
 }
 
-// 加载流程数据
-const loadProcessData = async (data: any) => {
-  try {
-    if (data) {
-      const parsedData = typeof data === 'string' ? JSON.parse(data) : data
-      processNodeTree.value = parsedData
-      currentValue.value = parsedData
-      // 确保数据加载后刷新视图
-      await nextTick()
-      if (simpleProcessModelRef.value?.refresh) {
-        await simpleProcessModelRef.value.refresh()
-      }
-    }
-  } catch (error) {
-    console.error('加载流程数据失败:', error)
-  }
-}
-
-// 监听属性变化
-watch(
-  () => props.value,
-  async (newValue, oldValue) => {
-    if (newValue && newValue !== oldValue) {
-      await loadProcessData(newValue)
-    }
-  },
-  { immediate: true, deep: true }
-)
-
-// 监听流程节点树变化，自动保存
-watch(
-  () => processNodeTree.value,
-  async (newValue, oldValue) => {
-    if (newValue && oldValue && JSON.stringify(newValue) !== JSON.stringify(oldValue)) {
-      await saveSimpleFlowModel(newValue)
-    }
-  },
-  { deep: true }
-)
 
 const saveSimpleFlowModel = async (simpleModelNode: SimpleFlowNode) => {
   if (!simpleModelNode) {
     return
   }
 
-  // 校验节点
-  errorNodes = []
-  validateNode(simpleModelNode, errorNodes)
-  if (errorNodes.length > 0) {
-    errorDialogVisible.value = true
-    return
-  }
-
   try {
-    if (props.modelId) {
-      // 编辑模式
-      const data = {
-        id: props.modelId,
-        simpleModel: simpleModelNode
-      }
-      await updateBpmSimpleModel(data)
-    }
-    // 无论是编辑还是新建模式，都更新当前值并触发事件
-    currentValue.value = simpleModelNode
+    processData.value = simpleModelNode
     emits('success', simpleModelNode)
   } catch (error) {
     console.error('保存失败:', error)
@@ -246,61 +187,20 @@ onMounted(async () => {
     deptTreeOptions.value = handleTree(deptOptions.value as DeptApi.DeptVO[], 'id')
     // 获取用户组列表
     userGroupOptions.value = await UserGroupApi.getUserGroupSimpleList()
-
     // 加载流程数据
-    if (props.modelId) {
-      // 获取 SIMPLE 设计器模型
-      const result = await getBpmSimpleModel(props.modelId)
-      if (result) {
-        await loadProcessData(result)
-      } else {
-        updateModel()
-      }
-    } else if (props.value) {
-      await loadProcessData(props.value)
+    if (processData.value) {
+      processNodeTree.value = processData?.value
     } else {
       updateModel()
     }
   } finally {
     loading.value = false
-    emits('init-finished')
   }
 })
 
 const simpleProcessModelRef = ref()
 
-/** 获取当前流程数据 */
-const getCurrentFlowData = async () => {
-  try {
-    if (simpleProcessModelRef.value) {
-      const data = await simpleProcessModelRef.value.getCurrentFlowData()
-      if (data) {
-        currentValue.value = data
-        return data
-      }
-    }
-    return currentValue.value
-  } catch (error) {
-    console.error('获取流程数据失败:', error)
-    return currentValue.value
-  }
-}
-
-// 刷新方法
-const refresh = async () => {
-  try {
-    if (currentValue.value) {
-      await loadProcessData(currentValue.value)
-    }
-  } catch (error) {
-    console.error('刷新失败:', error)
-  }
-}
 
 defineExpose({
-  getCurrentFlowData,
-  updateModel,
-  loadProcessData,
-  refresh
 })
 </script>

src/components/SimpleProcessDesignerV2/src/SimpleProcessModel.vue

@@ -3,11 +3,31 @@
     <div class="position-absolute top-0px right-0px bg-#fff">
       <el-row type="flex" justify="end">
         <el-button-group key="scale-control" size="default">
+          <el-button size="default" @click="exportJson()"><Icon icon="ep:download" />导出</el-button>
+          <el-button size="default" @click="importJson()"><Icon icon="ep:upload" />导入</el-button>
+          <!-- 用于打开本地文件-->
+          <input
+            type="file"
+            id="files"
+            ref="refFile"
+            style="display: none"
+            accept=".json"
+            @change="importLocalFile"
+          />
           <el-button size="default" :icon="ScaleToOriginal" @click="processReZoom()" />
           <el-button size="default" :plain="true" :icon="ZoomOut" @click="zoomOut()" />
           <el-button size="default" class="w-80px"> {{ scaleValue }}% </el-button>
           <el-button size="default" :plain="true" :icon="ZoomIn" @click="zoomIn()" />
         </el-button-group>
+<!--        <el-button-->
+<!--          v-if="!readonly"-->
+<!--          size="default"-->
+<!--          class="ml-4px"-->
+<!--          type="primary"-->
+<!--          :icon="Select"-->
+<!--          @click="saveSimpleFlowModel"-->
+<!--          >保存模型</el-button-->
+<!--        >-->
       </el-row>
     </div>
     <div class="simple-process-model" :style="`transform: scale(${scaleValue / 100});`">
@@ -33,7 +53,8 @@
 import ProcessNodeTree from './ProcessNodeTree.vue'
 import { SimpleFlowNode, NodeType, NODE_DEFAULT_TEXT } from './consts'
 import { useWatchNode } from './node'
-import { ZoomOut, ZoomIn, ScaleToOriginal } from '@element-plus/icons-vue'
+import { ZoomOut, ZoomIn, ScaleToOriginal, Select } from '@element-plus/icons-vue'
+import { isString } from '@/utils/is'
 
 defineOptions({
   name: 'SimpleProcessModel'
@@ -85,6 +106,16 @@ const processReZoom = () => {
 const errorDialogVisible = ref(false)
 let errorNodes: SimpleFlowNode[] = []
 
+const saveSimpleFlowModel = async () => {
+  errorNodes = []
+  validateNode(processNodeTree.value, errorNodes)
+  if (errorNodes.length > 0) {
+    errorDialogVisible.value = true
+    return
+  }
+  emits('save', processNodeTree.value)
+}
+
 // 校验节点设置。 暂时以 showText 为空 未节点错误配置
 const validateNode = (node: SimpleFlowNode | undefined, errorNodes: SimpleFlowNode[]) => {
   if (node) {
@@ -143,6 +174,36 @@ const getCurrentFlowData = async () => {
 defineExpose({
   getCurrentFlowData
 })
+
+const exportJson = () => {
+  const blob = new Blob([JSON.stringify(processNodeTree.value)]);
+  const tempLink = document.createElement('a'); // 创建a标签
+  const href = window.URL.createObjectURL(blob); // 创建下载的链接
+  //filename
+  const fileName = `model.json`;
+  tempLink.href = href;
+  tempLink.target = '_blank';
+  tempLink.download = fileName;
+  document.body.appendChild(tempLink);
+  tempLink.click(); // 点击下载
+  document.body.removeChild(tempLink); // 下载完成移除元素
+  window.URL.revokeObjectURL(href); // 释放掉blob对象
+}
+const importJson = () => {
+  refFile.value.click()
+}
+const refFile = ref()
+// 加载本地文件
+const importLocalFile = () => {
+  const file = refFile.value.files[0]
+  const reader = new FileReader()
+  reader.readAsText(file)
+  reader.onload = function () {
+    if (isString(this.result)) {
+      processNodeTree.value = JSON.parse(this.result)
+    }
+  }
+}
 </script>
 
 <style lang="scss" scoped></style>

src/components/bpmnProcessDesigner/package/designer/ProcessDesigner.vue

@@ -308,28 +308,6 @@ const props = defineProps({
   }
 })
 
-// 监听value变化,重新加载流程图
-watch(
-  () => props.value,
-  (newValue) => {
-    if (newValue && bpmnModeler) {
-      createNewDiagram(newValue)
-    }
-  },
-  { immediate: true }
-)
-
-// 监听processId和processName变化
-watch(
-  [() => props.processId, () => props.processName],
-  ([newId, newName]) => {
-    if (newId && newName && !props.value) {
-      createNewDiagram(null)
-    }
-  },
-  { immediate: true }
-)
-
 provide('configGlobal', props)
 let bpmnModeler: any = null
 const defaultZoom = ref(1)
@@ -480,6 +458,7 @@ const initModelListeners = () => {
       emit('commandStack-changed', event)
       emit('input', xml)
       emit('change', xml)
+      emit('save', xml)
     } catch (e: any) {
       console.error(`[Process Designer Warn]: ${e.message || e}`)
     }