✨(component): tree组件 加入半选状态,优化data改变是视图更新,优化checkedKeys支持下级节点,默认开启过渡动画,优化关闭连线后支持行内点击

package/component/src/component/tree/TreeNode.vue

@@ -7,7 +7,7 @@ export default {
 <script setup lang="ts">
 import { LayIcon } from "@layui/icons-vue";
 import LayCheckbox from "../checkbox/index.vue";
-import { Ref, useSlots } from "vue";
+import { computed, Ref, useSlots } from "vue";
 import { Tree } from "./tree";
 import { Nullable } from "../../types";
 import LayTransition from "../transition/index.vue";
@@ -19,9 +19,9 @@ export interface TreeData {
   children: TreeData[];
   parentKey: Nullable<StringOrNumber>;
   isRoot: boolean;
-  isChecked: Ref<boolean>;
-  isDisabled: Ref<boolean>;
-  isLeaf: Ref<boolean>;
+  isChecked: boolean;
+  isDisabled: boolean;
+  isLeaf: boolean;
   hasNextSibling: boolean;
   parentNode: Nullable<TreeData>;
 }
@@ -65,7 +65,7 @@ const nodeIconType = (node: TreeData): string => {
     return "";
   }
   if (node.children.length !== 0) {
-    return !node.isLeaf.value
+    return !node.isLeaf
       ? "layui-icon-addition"
       : "layui-icon-subtraction";
   }
@@ -81,7 +81,7 @@ function handleChange(checked: boolean, node: TreeData) {
 }
 
 function handleIconClick(node: TreeData) {
-  node.isLeaf.value = !node.isLeaf.value;
+  node.isLeaf = !node.isLeaf;
 }
 
 function handleTitleClick(node: TreeData) {
@@ -90,6 +90,39 @@ function handleTitleClick(node: TreeData) {
   }
   emit("node-click", node);
 }
+function handleRowClick(node:TreeData){
+  if(!props.showLine){
+    handleTitleClick(node);
+  }
+}
+
+//判断是否半选
+const isChildAllSelected=computed(()=>{
+  function _isChildAllSelected(node:TreeData):boolean{
+    if(!props.showCheckbox){
+      return false;
+    }
+    let childSelectNum=0;
+    let res=false;// true为半选 false为全选
+    for (const item of node.children) {
+      if(item.isChecked) childSelectNum++;
+    }
+    if(childSelectNum>0) node.isChecked=true;//此处的处理与 checkedKeys 有关联
+    if(childSelectNum==node.children.length){//继续递归向下判断
+      for (const item of node.children) {
+        res=_isChildAllSelected(item)
+        if(res) break;
+      }
+    }else{
+      res=true;
+    }
+    return res;
+  }
+  return function(node:TreeData):boolean{
+    let res=_isChildAllSelected(node)
+    return res;
+  }
+})
 </script>
 
 <template>
@@ -102,7 +135,7 @@ function handleTitleClick(node: TreeData) {
       'layui-tree-setHide': node.isRoot,
     }"
   >
-    <div class="layui-tree-entry">
+    <div class="layui-tree-entry" @click="handleRowClick(node)">
       <div class="layui-tree-main">
         <span
           :class="[
@@ -110,12 +143,12 @@ function handleTitleClick(node: TreeData) {
             { 'layui-tree-iconClick': true },
           ]"
         >
-          <lay-icon :type="nodeIconType(node)" @click="handleIconClick(node)" />
+          <lay-icon :type="nodeIconType(node)" @click.stop="handleIconClick(node)" />
         </span>
         <lay-checkbox
           v-if="showCheckbox"
-          :modelValue="node.isChecked.value"
-          :disabled="node.isDisabled.value"
+          :modelValue="node.isChecked"
+          :disabled="node.isDisabled"
           skin="primary"
           label=""
           @change="
@@ -123,13 +156,14 @@ function handleTitleClick(node: TreeData) {
               handleChange(checked, node);
             }
           "
+          :isIndeterminate='isChildAllSelected(node)'
         />
         <span
           :class="{
             'layui-tree-txt': true,
-            'layui-disabled': node.isDisabled.value,
+            'layui-disabled': node.isDisabled,
           }"
-          @click="handleTitleClick(node)"
+          @click.stop="handleTitleClick(node)"
         >
           <template v-if="slots.title">
             <slot name="title" :data="node"></slot>
@@ -142,7 +176,7 @@ function handleTitleClick(node: TreeData) {
     </div>
     <lay-transition :enable="collapseTransition">
       <div
-        v-if="node.isLeaf.value"
+        v-if="node.isLeaf"
         class="layui-tree-pack layui-tree-showLine"
         style="display: block"
       >

package/component/src/component/tree/index.vue

@@ -6,7 +6,7 @@ export default {
 
 <script lang="ts" setup>
 import TreeNode from "./TreeNode.vue";
-import { computed, useSlots } from "vue";
+import { computed, useSlots, watch,ref } from "vue";
 import { useTree } from "./useTree";
 import { TreeData } from "./tree";
 import { StringFn, StringOrNumber, KeysType, EditType } from "./tree.type";
@@ -43,9 +43,10 @@ interface TreeEmits {
 }
 
 const props = withDefaults(defineProps<TreeProps>(), {
+  checkedKeys:()=>{ return [] },
   showCheckbox: false,
   edit: false,
-  collapseTransition: false,
+  collapseTransition: true,
   onlyIconControl: false,
   disabled: false,
   showLine: true,
@@ -70,10 +71,29 @@ const className = computed(() => {
   };
 });
 
-const { tree, nodeList } = useTree(props, emit);
+let tree=ref();
+let nodeList=ref();
+const loadNodeList=()=>{
+  let { tree:_tree, nodeList:_nodeList }=useTree(props, emit);
+  tree.value=_tree
+  nodeList.value=_nodeList.value
+}
+watch(
+  () => props.data,
+  () => {
+    loadNodeList();
+  },
+  { deep: true,immediate:true}
+)
+watch(
+  () => props.checkedKeys,
+  () => {
+    loadNodeList()
+  },
+)
 
 function handleClick(node: TreeData) {
-  const originNode = tree.getOriginData(node.id);
+  const originNode = tree.value.getOriginData(node.id);
   emit("node-click", originNode);
 }
 </script>

package/component/src/component/tree/tree.ts

@@ -11,9 +11,9 @@ export interface TreeData {
   children: TreeData[];
   parentKey: Nullable<StringOrNumber>;
   isRoot: boolean;
-  isChecked: Ref<boolean>;
-  isDisabled: Ref<boolean>;
-  isLeaf: Ref<boolean>;
+  isChecked: boolean;
+  isDisabled: boolean;
+  isLeaf: boolean;
   hasNextSibling: boolean;
   parentNode: Nullable<TreeData>;
 }
@@ -106,21 +106,23 @@ class Tree {
       children: nodeChildren ? nodeChildren : [],
       parentKey: parentKey,
       isRoot: parentKey === "",
-      isDisabled: ref(false),
-      isChecked: ref(false),
-      isLeaf: ref(false),
+      isDisabled:false,
+      isChecked: false,
+      isLeaf: false,
       hasNextSibling: hasNextSibling,
       parentNode: parentNode || null,
     });
 
-    node.isDisabled.value = nodeDisabled;
-    node.isChecked.value = parentNode
-      ? parentNode.isChecked.value
-      : checkedKeys.includes(nodeKey);
-    node.isLeaf.value = parentNode
-      ? parentNode.isLeaf.value
+    node.isDisabled = nodeDisabled;
+    if(parentNode && parentNode.isChecked){
+      node.isChecked=true;
+    }else{
+      node.isChecked=checkedKeys.includes(nodeKey);
+    }
+    node.isLeaf = parentNode
+      ? parentNode.isLeaf
       : expandKeys.includes(nodeKey);
-    node.isLeaf.value = nodeIsLeaf;
+    node.isLeaf = nodeIsLeaf;
 
     if (!nodeMap.has(nodeKey)) {
       nodeMap.set(nodeKey, node);
@@ -134,7 +136,7 @@ class Tree {
   setChildrenChecked(checked: boolean, nodes: TreeData[]) {
     const len = nodes.length;
     for (let i = 0; i < len; i++) {
-      nodes[i].isChecked.value = checked;
+      nodes[i].isChecked = checked;
       nodes[i].children &&
         nodes[i].children.length > 0 &&
         this.setChildrenChecked(checked, nodes[i].children);
@@ -145,11 +147,11 @@ class Tree {
     if (!parent) {
       return;
     }
-    parent.isChecked.value = checked;
+    parent.isChecked = checked;
     const pChild = parent.children;
-    const pChildChecked = pChild.some((c) => c.isChecked.value);
+    const pChildChecked = pChild.some((c) => c.isChecked);
     if (pChildChecked) {
-      parent.isChecked.value = true;
+      parent.isChecked = true;
     }
     if (parent.parentNode) {
       this.setParentChecked(checked, parent.parentNode);
@@ -157,7 +159,7 @@ class Tree {
   }
 
   setCheckedKeys(checked: boolean, node: TreeData) {
-    node.isChecked.value = checked;
+    node.isChecked = checked;
     // 处理上级
     if (node.parentNode) {
       this.setParentChecked(checked, node.parentNode);
@@ -180,10 +182,10 @@ class Tree {
     while (!next.done) {
       const [, node] = next.value;
       const id = Reflect.get(node, this.config.replaceFields.id);
-      if (node.isChecked.value) {
+      if (node.isChecked) {
         checkedKeys.push(id);
       }
-      if (node.isLeaf.value) {
+      if (node.isLeaf) {
         expandKeys.push(id);
       }
       next = iterator.next();