1.4.2

feat: 🎸 #47

.babelrc

@@ -1,10 +0,0 @@
-{
-  "presets": ["es2015", "stage-2"],
-  "plugins": ["transform-runtime"],
-  "comments": false,
-  "env": {
-    "test": {
-      "plugins": [ "istanbul" ]
-    }
-  }
-}

.commitlintrc.yml

@@ -0,0 +1,2 @@
+extends:
+  - "@commitlint/config-conventional"

.czrc

@@ -0,0 +1,3 @@
+{
+  "path": "cz-conventional-changelog"
+}

.github/workflows/test.yml

@@ -0,0 +1,15 @@
+name: Test
+
+on: [pull_request, push]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v1
+      - name: npm install, lint and test
+        run: |
+          npm install
+          npm run lint
+          npm run test:coverage

.gitignore

@@ -1,4 +1,23 @@
+.DS_Store
 node_modules
-npm-debug.log
+/dist
+
+# local env files
+.env.local
+.env.*.local
+
+# Log files
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Editor directories and files
 .idea
-coverage
+.vscode
+*.suo
+*.ntvs*
+*.njsproj
+*.sln
+*.sw?
+
+coverage

.huskyrc.yml

@@ -0,0 +1,4 @@
+hooks:
+  pre-commit:
+    - npm run standard
+  commit-msg: commitlint -E HUSKY_GIT_PARAMS

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2019 ayou
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

babel.config.js

@@ -0,0 +1,5 @@
+module.exports = {
+  presets: [
+    '@vue/cli-plugin-babel/preset'
+  ]
+}

build/webpack.base.conf.js

@@ -1,39 +0,0 @@
-var webpack = require('webpack');
-var path = require('path');
-
-var projectRoot = path.resolve(__dirname, '../')
-
-module.exports = {
-  module: {
-    loaders: [
-      {
-        test: /\.vue$/,
-        loader: 'vue'
-      },
-      {
-        test: /\.js$/,
-        loader: 'babel',
-        include: [path.join(projectRoot, 'src'), path.join(projectRoot, 'dev')],
-        exclude: /node_modules/
-      },
-      {
-        test: /\.(woff2?|eot|ttf|otf|svg)(\?.*)?$/,
-        loader: 'url-loader',
-        query: {
-          limit: 10000,
-          name: 'fonts/[name].[hash:7].[ext]'
-        }
-      }
-    ]
-  },
-  vue: {
-    loaders: {
-      less: 'vue-style!css!less'
-    },
-    postcss: [
-      require('autoprefixer')({
-        browsers: ['iOS >= 7', 'Android >= 4.1']
-      })
-    ]
-  }
-}

build/webpack.build.conf.js

@@ -1,23 +0,0 @@
-var webpack = require('webpack')
-var merge = require('webpack-merge')
-var baseConfig = require('./webpack.base.conf')
-var path = require('path')
-
-var projectRoot = path.resolve(__dirname, '../')
-
-module.exports = merge(baseConfig, {
-  entry: './src/index.js',
-  output: {
-    path: path.resolve(projectRoot, 'dist'),
-    filename: 'vue-tree-list.min.js',
-    library: 'VueTreeList',
-    libraryTarget: 'umd'
-  },
-  plugins: [
-    new webpack.optimize.UglifyJsPlugin({
-      compress: {
-        warnings: false
-      }
-    })
-  ]
-})

build/webpack.dev.conf.js

@@ -1,28 +0,0 @@
-var webpack = require('webpack')
-var merge = require('webpack-merge')
-var HtmlWebpackPlugin = require('html-webpack-plugin')
-var baseConfig = require('./webpack.base.conf')
-var path = require('path')
-
-var projectRoot = path.resolve(__dirname, '../')
-
-module.exports = merge(baseConfig, {
-  entry: './dev/index.js',
-  devServer: {
-    historyApiFallback: true,
-    noInfo: true,
-    overlay: true,
-    open: true,
-    hot: true,
-    inline: true
-  },
-  devtool: '#eval-source-map',
-  plugins: [
-    new HtmlWebpackPlugin({
-      template: './dev/index.html',
-      filename: 'index.html',
-      inject: true
-    }),
-    new webpack.HotModuleReplacementPlugin()
-  ]
-})

dev/App.vue

@@ -1,84 +1,174 @@
 <template>
-    <div>
-        <button @click="addNode">Add Node</button>
-        <vue-tree-list @click="onClick" :model="data" default-tree-node-name="new node" default-leaf-node-name="new leaf"></vue-tree-list>
-        <button @click="getNewTree">Get new tree</button>
-        <pre>
-          {{newTree}}
-        </pre>
-    </div>
+  <div>
+    <button @click="addNode">Add Node</button>
+    <vue-tree-list
+      @click="onClick"
+      @change-name="onChangeName"
+      @delete-node="onDel"
+      @add-node="onAddNode"
+      @drop="drop"
+      @drop-before="dropBefore"
+      @drop-after="dropAfter"
+      :model="data"
+      default-tree-node-name="new node"
+      default-leaf-node-name="new leaf"
+      v-bind:default-expanded="false"
+    >
+      <template v-slot:addTreeNodeIcon="slotProps">
+        <span class="icon">📂</span>
+      </template>
+      <template v-slot:addLeafNodeIcon="slotProps">
+        <span class="icon">＋</span>
+      </template>
+      <template v-slot:editNodeIcon="slotProps">
+        <span class="icon">📃</span>
+      </template>
+      <template v-slot:delNodeIcon="slotProps">
+        <span class="icon">✂️</span>
+      </template>
+      <template v-slot:leafNodeIcon="slotProps">
+        <span class="icon">🍃</span>
+      </template>
+      <template v-slot:treeNodeIcon="slotProps">
+        <span class="icon">
+          {{ (slotProps.model.children && slotProps.model.children.length > 0 && !slotProps.expanded) ? '🌲' : '' }}</span>
+      </template>
+    </vue-tree-list>
+    <button @click="getNewTree">Get new tree</button>
+    <pre>
+          {{ newTree }}
+        </pre
+    >
+  </div>
 </template>
 <script>
-  import { VueTreeList, Tree, TreeNode } from '../dist/vue-tree-list.min'
-  export default {
-    components: {
-      VueTreeList
-    },
-    data () {
-      return {
-        newTree: {},
-        data: new Tree([
-          {
-            name: 'Node 1',
-            id: 1,
-            pid: 0,
-            dragDisabled: true,
-            children: [
-              {
-                name: 'Node 1-2',
-                id: 2,
-                isLeaf: true,
-                pid: 1
-              }
-            ]
-          },
-          {
-            name: 'Node 2',
-            id: 3,
-            pid: 0,
-            dragDisabled: true
-          },
-          {
-            name: 'Node 3',
-            id: 4,
-            pid: 0
-          }
-        ])
-      }
-    },
-    methods: {
-      addNode: function () {
-        var node = new TreeNode({ name: 'new node', isLeaf: false })
-        if (!this.data.children) this.data.children = []
-        this.data.addChildren(node)
-      },
-
-      getNewTree: function () {
-        var vm = this
-        function _dfs (oldNode) {
-          var newNode = {}
-
-          for (var k in oldNode) {
-            if (k !== 'children' && k !== 'parent') {
-              newNode[k] = oldNode[k]
+import {VueTreeList, Tree, TreeNode} from '../src'
+export default {
+  components: {
+    VueTreeList
+  },
+  data() {
+    return {
+      newTree: {},
+      data: new Tree([
+        {
+          name: 'Node 1',
+          id: 1,
+          pid: 0,
+          dragDisabled: true,
+          addTreeNodeDisabled: true,
+          addLeafNodeDisabled: true,
+          editNodeDisabled: true,
+          delNodeDisabled: true,
+          children: [
+            {
+              name: 'Node 1-2',
+              id: 2,
+              isLeaf: true,
+              pid: 1
             }
-          }
+          ]
+        },
+        {
+          name: 'Node 2',
+          id: 3,
+          pid: 0,
+          disabled: true
+        },
+        {
+          name: 'Node 3',
+          id: 4,
+          pid: 0
+        }
+      ])
+    }
+  },
+  methods: {
+    onDel(node) {
+      // eslint-disable-next-line no-console
+      console.log(node)
+      node.remove()
+    },
 
-          if (oldNode.children && oldNode.children.length > 0) {
-            newNode.children = []
-            for (var i = 0, len = oldNode.children.length; i < len; i++) {
-              newNode.children.push(_dfs(oldNode.children[i]))
-            }
+    onChangeName(params) {
+      // eslint-disable-next-line no-console
+      console.log(params)
+    },
+
+    onAddNode(params) {
+      // eslint-disable-next-line no-console
+      console.log(params)
+    },
+
+    onClick(params) {
+      // eslint-disable-next-line no-console
+      console.log(params)
+    },
+
+    drop: function({node, src, target}) {
+      // eslint-disable-next-line no-console
+      console.log('drop', node, src, target)
+    },
+
+    dropBefore: function({node, src, target}) {
+      // eslint-disable-next-line no-console
+      console.log('drop-before', node, src, target)
+    },
+
+    dropAfter: function({node, src, target}) {
+      // eslint-disable-next-line no-console
+      console.log('drop-after', node, src, target)
+    },
+
+    addNode() {
+      var node = new TreeNode({name: 'new node', isLeaf: false})
+      if (!this.data.children) this.data.children = []
+      this.data.addChildren(node)
+    },
+
+    getNewTree() {
+      var vm = this
+      function _dfs(oldNode) {
+        var newNode = {}
+
+        for (var k in oldNode) {
+          if (k !== 'children' && k !== 'parent') {
+            newNode[k] = oldNode[k]
           }
-          return newNode
         }
 
-        vm.newTree = _dfs(vm.data)
-      },
-
-      onClick(model) {
-        console.log(model)
+        if (oldNode.children && oldNode.children.length > 0) {
+          newNode.children = []
+          for (var i = 0, len = oldNode.children.length; i < len; i++) {
+            newNode.children.push(_dfs(oldNode.children[i]))
+          }
+        }
+        return newNode
       }
+
+      vm.newTree = _dfs(vm.data)
     }
   }
+}
 </script>
+<style lang="less" rel="stylesheet/less">
+.vtl {
+  .vtl-drag-disabled {
+    background-color: #d0cfcf;
+    &:hover {
+      background-color: #d0cfcf;
+    }
+  }
+  .vtl-disabled {
+    background-color: #d0cfcf;
+  }
+}
+</style>
+
+<style lang="less" rel="stylesheet/less" scoped>
+.icon {
+  &:hover {
+    cursor: pointer;
+  }
+}
+</style>

dev/index.html

@@ -1,11 +0,0 @@
-<!DOCTYPE html>
-<html lang="en">
-<head>
-    <meta name="viewport" content="with=device-width,initial-scale=1.0,
-      maximum-scale=1.0,minimum-scale=1.0,uses-scalable=no">
-    <title>vue-date-range</title>
-</head>
-<body>
-<div id="app"></div>
-</body>
-</html>

dev/index.js

@@ -6,4 +6,4 @@ import App from './App.vue'
 
 new Vue({
   render: h => h(App)
-}).$mount('#app')
+}).$mount('#app')

examples/demo1.html

@@ -59,6 +59,27 @@
             }
         }
 
+        .vtl .vtl-drag-disabled, .vtl .vtl-drag-disabled:hover {
+          background-color: #dbd7d7;
+          position: relative;
+        }
+
+        .vtl .vtl-drag-disabled::after, .vtl .vtl-disabled::after {
+          content: 'drag disabled';
+          position: absolute;
+          right: 10px;
+          font-size: 12px;
+          font-style: italic;
+        }
+
+        .vtl .vtl-disabled, .vtl .vtl-disabled:hover {
+          background-color: red;
+          position: relative;
+        }
+
+        .vtl .vtl-disabled::after {
+          content: 'disabled';
+        }
     </style>
 </head>
 <body>
@@ -141,7 +162,7 @@
             name: 'Node 2',
             id: 3,
             pid: 0,
-            dragDisabled: true
+            disabled: true
           },
           {
             name: 'Node 3',

jest.config.js

@@ -0,0 +1,6 @@
+module.exports = {
+  preset: '@vue/cli-plugin-unit-jest',
+  snapshotSerializers: ['jest-serializer-vue'],
+  collectCoverageFrom: ['src/**/*.{js,vue}'],
+  coveragePathIgnorePatterns: ['src/index.js']
+}

package.json

@@ -1,58 +1,78 @@
 {
   "name": "vue-tree-list",
-  "version": "1.0.8",
+  "version": "1.4.2",
   "description": "A vue component for tree structure. Support adding treenode/leafnode, editing node's name and dragging.",
-  "main": "dist/vue-tree-list.min.js",
-  "scripts": {
-    "test": "karma start --single-run",
-    "unit": "karma start --watch",
-    "coveralls": "npm run test -- --report lcovonly && cat ./coverage/lcov.info | coveralls",
-    "build": "webpack --config build/webpack.build.conf.js",
-    "dev": "webpack-dev-server --config build/webpack.dev.conf.js"
-  },
-  "repository": {
-    "type": "git",
-    "url": "git+https://github.com/ParadeTo/vue-tree-list.git"
-  },
-  "keywords": [
-    "vue",
-    "tree"
-  ],
   "author": "ayou",
-  "license": "ISC",
+  "scripts": {
+    "serve": "vue-cli-service serve dev",
+    "build": "vue-cli-service build --target lib src/index.js",
+    "test:unit": "vue-cli-service test:unit --watch",
+    "test:coverage": "vue-cli-service test:unit --coverage",
+    "lint": "vue-cli-service lint",
+    "commit": "npx git-cz",
+    "prepublish": "npm run build"
+  },
+  "main": "dist/vue-tree-list.umd.min.js",
+  "dependencies": {
+    "core-js": "^3.4.3",
+    "vue": "^2.6.10"
+  },
+  "devDependencies": {
+    "@vue/cli-plugin-babel": "^4.1.0",
+    "@vue/cli-plugin-eslint": "^4.1.0",
+    "@vue/cli-plugin-unit-jest": "^4.1.1",
+    "@vue/cli-service": "^4.1.0",
+    "@vue/test-utils": "1.0.0-beta.29",
+    "babel-eslint": "^10.0.3",
+    "eslint": "^5.16.0",
+    "eslint-plugin-vue": "^5.0.0",
+    "jest-serializer-vue": "^2.0.2",
+    "less": "^3.10.3",
+    "less-loader": "^5.0.0",
+    "vue-template-compiler": "^2.6.10"
+  },
+  "eslintConfig": {
+    "root": true,
+    "env": {
+      "node": true
+    },
+    "extends": [
+      "plugin:vue/essential",
+      "eslint:recommended"
+    ],
+    "rules": {
+      "no-console": "warn"
+    },
+    "parserOptions": {
+      "parser": "babel-eslint"
+    },
+    "overrides": [
+      {
+        "files": [
+          "**/__tests__/*.{j,t}s?(x)",
+          "**/tests/unit/**/*.spec.{j,t}s?(x)"
+        ],
+        "env": {
+          "jest": true
+        }
+      }
+    ]
+  },
+  "browserslist": [
+    "> 1%",
+    "last 2 versions"
+  ],
   "bugs": {
     "url": "https://github.com/ParadeTo/vue-tree-list/issues"
   },
   "homepage": "https://github.com/ParadeTo/vue-tree-list#readme",
-  "devDependencies": {
-    "autoprefixer": "^6.4.0",
-    "babel-core": "^6.0.0",
-    "babel-eslint": "^7.0.0",
-    "babel-loader": "^6.0.0",
-    "babel-plugin-istanbul": "^3.0.0",
-    "babel-plugin-transform-runtime": "^6.0.0",
-    "babel-preset-es2015": "^6.0.0",
-    "babel-preset-stage-2": "^6.0.0",
-    "babel-register": "^6.0.0",
-    "chai": "^3.5.0",
-    "cross-env": "^5.0.1",
-    "css-loader": "^0.26.2",
-    "file-loader": "^0.10.1",
-    "isparta": "^4.0.0",
-    "isparta-loader": "^2.0.0",
-    "less": "^2.7.2",
-    "less-loader": "^2.2.3",
-    "sinon": "^2.3.5",
-    "sinon-chai": "^2.11.0",
-    "sourcemap": "^0.1.0",
-    "url-loader": "^0.5.7",
-    "vue": "^2.3.4",
-    "vue-loader": "^11.1.3",
-    "vue-style-loader": "^2.0.3",
-    "vue-template-compiler": "^2.2.0",
-    "webpack": "^1.13.2",
-    "webpack-dev-server": "1.14.0",
-    "webpack-merge": "^0.14.1",
-    "html-webpack-plugin": "^2.8.1"
+  "keywords": [
+    "vue",
+    "tree"
+  ],
+  "license": "ISC",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/ParadeTo/vue-tree-list.git"
   }
 }

public/index.html

@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <meta name="viewport" content="width=device-width,initial-scale=1.0">
+    <link rel="icon" href="<%= BASE_URL %>favicon.ico">
+    <title>vue-tree-list</title>
+  </head>
+  <body>
+    <noscript>
+      <strong>We're sorry but vue-tree-list doesn't work properly without JavaScript enabled. Please enable it to continue.</strong>
+    </noscript>
+    <div id="app"></div>
+    <!-- built files will be auto injected -->
+  </body>
+</html>

readme.md

@@ -1,3 +1,5 @@
+[![Actions Status](https://github.com/ParadeTo/vue-tree-list/workflows/Test/badge.svg)](https://github.com/ParadeTo/vue-tree-list/actions)
+
 # vue-tree-list
 A vue component for tree structure. Support adding treenode/leafnode, editing node's name and dragging.
 
@@ -8,118 +10,215 @@ A vue component for tree structure. Support adding treenode/leafnode, editing no
 # use
 ``npm install vue-tree-list``
 
-```javascript
-<button @click="addNode">Add Node</button>
-<vue-tree-list @click="onClick" :model="data" default-tree-node-name="new node" default-leaf-node-name="new leaf"></vue-tree-list>
-<button @click="getNewTree">Get new tree</button>
-<pre>
-  {{newTree}}
-</pre>
-...
-import { VueTreeList, Tree, TreeNode } from '../src'
-export default {
-  components: {
-    VueTreeList
-  },
-  data () {
-    return {
-      newTree: {},
-      data: new Tree([
-        {
-          name: 'Node 1',
-          id: 1,
-          pid: 0,
-          dragDisabled: true,
-          children: [
-            {
-              name: 'Node 1-2',
-              id: 2,
-              isLeaf: true,
-              pid: 1
-            }
-          ]
-        },
-        {
-          name: 'Node 2',
-          id: 3,
-          pid: 0,
-          dragDisabled: true
-        },
-        {
-          name: 'Node 3',
-          id: 4,
-          pid: 0
-        }
-      ])
-    }
-  },
-  methods: {
-    addNode: function () {
-      var node = new TreeNode({ name: 'new node', isLeaf: false })
-      if (!this.data.children) this.data.children = []
-      this.data.addChildren(node)
+```html
+<template>
+  <div>
+    <button @click="addNode">Add Node</button>
+    <vue-tree-list
+      @click="onClick"
+      @change-name="onChangeName"
+      @delete-node="onDel"
+      @add-node="onAddNode"
+      :model="data"
+      default-tree-node-name="new node"
+      default-leaf-node-name="new leaf"
+      v-bind:default-expanded="false">
+      <span class="icon" slot="addTreeNodeIcon">📂</span>
+      <span class="icon" slot="addLeafNodeIcon">＋</span>
+      <span class="icon" slot="editNodeIcon">📃</span>
+      <span class="icon" slot="delNodeIcon">✂️</span>
+      <span class="icon" slot="leafNodeIcon">🍃</span>
+      <span class="icon" slot="treeNodeIcon">🌲</span>
+    </vue-tree-list>
+    <button @click="getNewTree">Get new tree</button>
+    <pre>
+      {{newTree}}
+    </pre>
+  </div>
+</template>
+
+<script>
+  import { VueTreeList, Tree, TreeNode } from 'vue-tree-list'
+  export default {
+    components: {
+      VueTreeList
     },
-
-    getNewTree: function () {
-      var vm = this
-      function _dfs (oldNode) {
-        var newNode = {}
-
-        for (var k in oldNode) {
-          if (k !== 'children' && k !== 'parent') {
-            newNode[k] = oldNode[k]
+    data () {
+      return {
+        newTree: {},
+        data: new Tree([
+          {
+            name: 'Node 1',
+            id: 1,
+            pid: 0,
+            dragDisabled: true,
+            addTreeNodeDisabled: true,
+            addLeafNodeDisabled: true,
+            editNodeDisabled: true,
+            delNodeDisabled: true,
+            children: [
+              {
+                name: 'Node 1-2',
+                id: 2,
+                isLeaf: true,
+                pid: 1
+              }
+            ]
+          },
+          {
+            name: 'Node 2',
+            id: 3,
+            pid: 0,
+            disabled: true
+          },
+          {
+            name: 'Node 3',
+            id: 4,
+            pid: 0
           }
-        }
-
-        if (oldNode.children && oldNode.children.length > 0) {
-          newNode.children = []
-          for (var i = 0, len = oldNode.children.length; i < len; i++) {
-            newNode.children.push(_dfs(oldNode.children[i]))
-          }
-        }
-        return newNode
+        ])
       }
-
-      vm.newTree = _dfs(vm.data)
     },
+    methods: {
+      onDel (node) {
+        console.log(node)
+        node.remove()
+      },
 
-    onClick(model) {
-      console.log(model)
+      onChangeName (params) {
+        console.log(params)
+      },
+
+      onAddNode (params) {
+        console.log(params)
+      },
+
+      onClick (params) {
+        console.log(params)
+      },
+
+      addNode () {
+        var node = new TreeNode({ name: 'new node', isLeaf: false })
+        if (!this.data.children) this.data.children = []
+        this.data.addChildren(node)
+      },
+
+      getNewTree () {
+        var vm = this
+        function _dfs (oldNode) {
+          var newNode = {}
+
+          for (var k in oldNode) {
+            if (k !== 'children' && k !== 'parent') {
+              newNode[k] = oldNode[k]
+            }
+          }
+
+          if (oldNode.children && oldNode.children.length > 0) {
+            newNode.children = []
+            for (var i = 0, len = oldNode.children.length; i < len; i++) {
+              newNode.children.push(_dfs(oldNode.children[i]))
+            }
+          }
+          return newNode
+        }
+
+        vm.newTree = _dfs(vm.data)
+      },
+      
     }
   }
-}
+</script>
+
+<style lang="less" rel="stylesheet/less">
+  .vtl {
+    .vtl-drag-disabled {
+      background-color: #d0cfcf;
+      &:hover {
+        background-color: #d0cfcf;
+      }
+    }
+    .vtl-disabled {
+      background-color: #d0cfcf;
+    }
+  }
+</style>
+
+<style lang="less" rel="stylesheet/less" scoped>
+  .icon {
+    &:hover {
+      cursor: pointer;
+    }
+  }
+</style>
+
 ```
 
 # props
-**default-tree-node-name**
- 
- Default name for new treenode.
+## props of vue-tree-list
+| name | type | default | description |
+|:-----:|:-------:|:------------:|:----:|
+model | TreeNode | - | You can use `const head = new Tree([])` to generate a tree with the head of `TreeNode` type
+default-tree-node-name | string | New node node | Default name for new treenode
+default-leaf-node-name | string | New leaf node | Default name for new leafnode
+default-expanded | boolean | true | Tree is expanded or not
 
-**default-leaf-node-name**
 
-Default name for new leafnode.
+## props of TreeNode
+### attributes
+| name | type | default | description |
+|:-----:|:-------:|:------------:|:----:|
+id | string, number | current timestamp | The node's id
+isLeaf | boolean | false | The node is leaf or not
+dragDisabled | boolean | false | Forbid dragging tree node
+addTreeNodeDisabled | boolean | false | Show `addTreeNode` button or not
+addLeafNodeDisabled | boolean | false | Show `addLeafNode` button or not
+editNodeDisabled | boolean | false | Show `editNode` button or not
+delNodeDisabled | boolean | false | Show `delNode` button or not
+children | array | null | The children of node
+
+### methods
+| name | params | description |
+|:-----:|:-------:|:----:|
+changeName | name | Change node's name
+addChildren | children: object, array | Add children to node
+remove | - | Remove node from the tree
+moveInto | target: TreeNode | Move node into another node
+insertBefore | target: TreeNode | Move node before another node
+insertAfter | target: TreeNode | Move node after another node
 
 # events
-**click**
+| name | params | description |
+|:-----:|:-------:|:----:|
+click | TreeNode | Trigger when clicking a tree node
+change-name | {'id', 'oldName', 'newName'} | Trigger after changing a node's name
+delete-node | TreeNode | Trigger when clicking `delNode` button. You can call `remove` of `TreeNode` to remove the node.
+add-node | TreeNode | Trigger after adding a new node
+drop | {node, src, target} | Trigger after dropping a node into another. node: the draggable node, src: the draggable node's parent, target: the node that draggable node will drop into
+drop-before | {node, src, target} | Trigger after dropping a node before another. node: the draggable node, src: the draggable node's parent, target: the node that draggable node will drop before
+drop-after | {node, src, target} | Trigger after dropping a node after another. node: the draggable node, src: the draggable node's parent, target: the node that draggable node will drop after
 
-```javascript
-<vue-tree-list @click="onClick" ...
-...
-onClick(model) {
-  console.log(model)
-}
-...
+# customize operation icons
+The component has default icons for `addTreeNodeIcon`, `addLeafNodeIcon`, `editNodeIcon`, `delNodeIcon`, `leafNodeIcon`, `treeNodeIcon` button, but you can also customize them and can access `model`, `root`, `expanded` as below:
+
+```html
+<template v-slot:addTreeNodeIcon="slotProps">
+  <span class="icon">📂</span>
+</template>
+<template v-slot:addLeafNodeIcon="slotProps">
+  <span class="icon">＋</span>
+</template>
+<template v-slot:editNodeIcon="slotProps">
+  <span class="icon">📃</span>
+</template>
+<template v-slot:delNodeIcon="slotProps">
+  <span class="icon">✂️</span>
+</template>
+<template v-slot:leafNodeIcon="slotProps">
+  <span class="icon">🍃</span>
+</template>
+<template v-slot:treeNodeIcon="slotProps">
+  <span class="icon">
+    {{ (slotProps.model.children && slotProps.model.children.length > 0 && !slotProps.expanded) ? '🌲' : '' }}</span>
+</template>
 ```
-
-# Forbid dragging
-Use `dragDisabled` to forbid dragging:
-```javascript
-data: new Tree([
-  {
-    name: 'Node 1',
-    id: 1,
-    pid: 0,
-    dragDisabled: true,
-  ...
-```
-

src/Tree.js

@@ -1,8 +1,4 @@
-// used to record treenode's change
-// let Record = {}
-// treenode's id
-let nodeId = 1
-
+import {traverseTree} from './tools'
 /**
  * Tree data struct
  * Created by ayou on 2017/7/20.
@@ -11,201 +7,162 @@ let nodeId = 1
  *   isLeaf: treenode is leaf node or not
  *   id: id
  *   dragDisabled: decide if it can be dragged
+ *   disabled: desabled all operation
  */
-const TreeNode = function (data) {
-  const { id, isLeaf } = data
-  // this.name = name
-  this.id = (typeof id === 'undefined') ? ('new' + nodeId++) : id
-  this.parent = null
-  // this.pid = null
-  this.children = null
-  this.isLeaf = !!isLeaf
+export class TreeNode {
+  constructor(data) {
+    const {id, isLeaf} = data
+    this.id = typeof id === 'undefined' ? new Date().valueOf() : id
+    this.parent = null
+    this.children = null
+    this.isLeaf = !!isLeaf
 
-  // other params
-  for (var k in data) {
-    if (k !== 'id' && k !== 'children' && k !== 'isLeaf') {
-      this[k] = data[k]
+    // other params
+    for (var k in data) {
+      if (k !== 'id' && k !== 'children' && k !== 'isLeaf') {
+        this[k] = data[k]
+      }
     }
   }
-}
 
-// TreeNode.prototype.updateRecordProperty = function () {
-//   if (!Record[this.id]) {
-//     Record[this.id] = {}
-//   }
-//
-//   Record[this.id].name = this.name
-//   Record[this.id].id = this.id
-//   Record[this.id].pid = this.pid
-//   Record[this.id].isLeaf = this.isLeaf
-// }
-
-TreeNode.prototype.changeName = function (name) {
-  this.name = name
-
-  // this.updateRecordProperty()
-  // Record[this.id].modify = true
-}
-
-TreeNode.prototype.addChildren = function (children, isNew) {
-  if (!this.children) {
-    this.children = []
+  changeName(name) {
+    this.name = name
   }
 
-  if (Array.isArray(children)) {
-    for (let i = 0, len = children.length; i < len; i++) {
-      const child = children[i]
+  addChildren(children) {
+    if (!this.children) {
+      this.children = []
+    }
+
+    if (Array.isArray(children)) {
+      for (let i = 0, len = children.length; i < len; i++) {
+        const child = children[i]
+        child.parent = this
+        child.pid = this.id
+      }
+      this.children.concat(children)
+    } else {
+      const child = children
       child.parent = this
       child.pid = this.id
-
-      // if (isNew) {
-        // child.updateRecordProperty()
-        // Record[child.id].add = true
-      // }
-    }
-    this.children.concat(children)
-  } else {
-    const child = children
-    child.parent = this
-    child.pid = this.id
-    this.children.push(child)
-
-    // if (isNew) {
-      // child.updateRecordProperty()
-      // Record[child.id].add = true
-    // }
-  }
-}
-
-// remove self
-TreeNode.prototype.remove = function () {
-  const parent = this.parent
-  const index = parent.findChildIndex(this)
-  parent.children.splice(index, 1)
-
-  // this.updateRecordProperty()
-  // Record[this.id].remove = true
-}
-
-// remove child
-TreeNode.prototype._removeChild = function (child) {
-  for (var i = 0, len = this.children.length; i < len; i++) {
-    if (this.children[i] === child) {
-      this.children.splice(i, 1)
-      break
+      this.children.push(child)
     }
   }
-}
 
-TreeNode.prototype.isTargetChild = function (target) {
-  let parent = target.parent
-  while (parent) {
-    if (parent === this) {
-      return true
-    }
-    parent = parent.parent
-  }
-  return false
-}
-
-TreeNode.prototype.moveInto = function (target) {
-  if (this.name === 'root' || this === target) {
-    return
+  // remove self
+  remove() {
+    const parent = this.parent
+    const index = parent.findChildIndex(this)
+    parent.children.splice(index, 1)
   }
 
-  // cannot move ancestor to child
-  if (this.isTargetChild(target)) {
-    return
-  }
-
-  // cannot move to leaf node
-  if (target.isLeaf) {
-    return
-  }
-
-  this.parent._removeChild(this)
-  this.parent = target
-  this.pid = target.id
-  if (!target.children) {
-    target.children = []
-  }
-  target.children.unshift(this)
-
-  // this.updateRecordProperty()
-  // Record[this.id].targetId = target.id
-  // Record[this.id].move = true
-  // Record[this.id].moveType = 'inside'
-}
-
-TreeNode.prototype.findChildIndex = function (child) {
-  var index
-  for (let i = 0, len = this.children.length; i < len; i++) {
-    if (this.children[i] === child) {
-      index = i
-      break
+  // remove child
+  _removeChild(child) {
+    for (var i = 0, len = this.children.length; i < len; i++) {
+      if (this.children[i] === child) {
+        this.children.splice(i, 1)
+        break
+      }
     }
   }
-  return index
-}
 
-TreeNode.prototype._beforeInsert = function (target) {
-  if (this.name === 'root' || this === target) {
+  isTargetChild(target) {
+    let parent = target.parent
+    while (parent) {
+      if (parent === this) {
+        return true
+      }
+      parent = parent.parent
+    }
     return false
   }
 
-  // cannot move ancestor to child
-  if (this.isTargetChild(target)) {
-    return false
-  }
-
-  this.parent._removeChild(this)
-  this.parent = target.parent
-  this.pid = target.parent.id
-  return true
-}
-
-TreeNode.prototype.insertBefore = function (target) {
-  if (!this._beforeInsert(target)) return
-
-  const pos = target.parent.findChildIndex(target)
-  target.parent.children.splice(pos, 0, this)
-
-  // this.updateRecordProperty()
-  // Record[this.id].targetId = target.id
-  // Record[this.id].move = true
-  // Record[this.id].moveType = 'before'
-}
-
-TreeNode.prototype.insertAfter = function (target) {
-  if (!this._beforeInsert(target)) return
-
-  const pos = target.parent.findChildIndex(target)
-  target.parent.children.splice(pos + 1, 0, this)
-
-  // this.updateRecordProperty()
-  // Record[this.id].targetId = target.id
-  // Record[this.id].move = true
-  // Record[this.id].moveType = 'after'
-}
-
-function Tree(data) {
-  this.root = new TreeNode({ name: 'root', isLeaf: false, id: 0 })
-  this.initNode(this.root, data)
-  return this.root
-}
-
-Tree.prototype.initNode = function (node, data) {
-  for (let i = 0, len = data.length; i < len; i++) {
-    var _data = data[i]
-
-    var child = new TreeNode(_data)
-    if (_data.children && _data.children.length > 0) {
-      this.initNode(child, _data.children)
+  moveInto(target) {
+    if (this.name === 'root' || this === target) {
+      return
     }
-    node.addChildren(child)
+
+    // cannot move ancestor to child
+    if (this.isTargetChild(target)) {
+      return
+    }
+
+    // cannot move to leaf node
+    if (target.isLeaf) {
+      return
+    }
+
+    this.parent._removeChild(this)
+    this.parent = target
+    this.pid = target.id
+    if (!target.children) {
+      target.children = []
+    }
+    target.children.unshift(this)
+  }
+
+  findChildIndex(child) {
+    var index
+    for (let i = 0, len = this.children.length; i < len; i++) {
+      if (this.children[i] === child) {
+        index = i
+        break
+      }
+    }
+    return index
+  }
+
+  _canInsert(target) {
+    if (this.name === 'root' || this === target) {
+      return false
+    }
+
+    // cannot insert ancestor to child
+    if (this.isTargetChild(target)) {
+      return false
+    }
+
+    this.parent._removeChild(this)
+    this.parent = target.parent
+    this.pid = target.parent.id
+    return true
+  }
+
+  insertBefore(target) {
+    if (!this._canInsert(target)) return
+
+    const pos = target.parent.findChildIndex(target)
+    target.parent.children.splice(pos, 0, this)
+  }
+
+  insertAfter(target) {
+    if (!this._canInsert(target)) return
+
+    const pos = target.parent.findChildIndex(target)
+    target.parent.children.splice(pos + 1, 0, this)
+  }
+
+  toString() {
+    return JSON.stringify(traverseTree(this))
   }
 }
 
-exports.Tree = Tree
-exports.TreeNode = TreeNode
-// exports.Record = Record
+export class Tree {
+  constructor(data) {
+    this.root = new TreeNode({name: 'root', isLeaf: false, id: 0})
+    this.initNode(this.root, data)
+    return this.root
+  }
+
+  initNode(node, data) {
+    for (let i = 0, len = data.length; i < len; i++) {
+      var _data = data[i]
+
+      var child = new TreeNode(_data)
+      if (_data.children && _data.children.length > 0) {
+        this.initNode(child, _data.children)
+      }
+      node.addChildren(child)
+    }
+  }
+}

src/VueTreeList.vue

@@ -1,374 +1,510 @@
 <template>
-  <div>
-    <div v-if="model.name !== 'root'">
-      <div class="border up" :class="{'active': isDragEnterUp}"
-        @drop="dropUp"
+  <div class="vtl">
+    <div
+      v-if="model.name !== 'root'"
+      :id="model.id"
+      class="vtl-node"
+      :class="{'vtl-leaf-node': model.isLeaf, 'vtl-tree-node': !model.isLeaf}"
+    >
+      <div
+        class="vtl-border vtl-up"
+        :class="{'vtl-active': isDragEnterUp}"
+        @drop="dropBefore"
         @dragenter="dragEnterUp"
-        @dragover='dragOverUp'
-        @dragleave="dragLeaveUp"></div>
-      <div class='tree-node' :id='model.id' :class="{'active': isDragEnterNode}"
+        @dragover="dragOverUp"
+        @dragleave="dragLeaveUp"
+      />
+      <div
+        :class="treeNodeClass"
         :draggable="!model.dragDisabled"
-        @dragstart='dragStart'
-        @dragover='dragOver'
-        @dragenter='dragEnter'
-        @dragleave='dragLeave'
-        @drop='drop'
-        @dragend='dragEnd'
-        @mouseover='mouseOver'
-        @mouseout='mouseOut'
-        @click.stop='click'>
-        <span class="caret icon is-small" v-if="model.children && model.children.length > 0">
-          <i class="vue-tree-icon" :class="caretClass" @click.prevent.stop="toggle"></i>
+        @dragstart="dragStart"
+        @dragover="dragOver"
+        @dragenter="dragEnter"
+        @dragleave="dragLeave"
+        @drop="drop"
+        @dragend="dragEnd"
+        @mouseover="mouseOver"
+        @mouseout="mouseOut"
+        @click.stop="click"
+      >
+        <span
+          class="vtl-caret vtl-is-small"
+          v-if="model.children && model.children.length > 0"
+        >
+          <i
+            class="vtl-icon"
+            :class="caretClass"
+            @click.prevent.stop="toggle"
+          ></i>
         </span>
 
         <span v-if="model.isLeaf">
-          <slot name="leafNodeIcon">
-            <i class="vue-tree-icon item-icon icon-file"></i>
+          <slot
+            name="leafNodeIcon"
+            :expanded="expanded"
+            :model="model"
+            :root="rootNode"
+          >
+            <i class="vtl-icon vtl-menu-icon vtl-icon-file"></i>
           </slot>
         </span>
         <span v-else>
-          <slot name="treeNodeIcon">
-            <i class="vue-tree-icon item-icon icon-folder"></i>
+          <slot
+            name="treeNodeIcon"
+            :expanded="expanded"
+            :model="model"
+            :root="rootNode"
+          >
+            <i class="vtl-icon vtl-menu-icon vtl-icon-folder"></i>
           </slot>
         </span>
 
-        <div class="node-content" v-if="!editable">
-          {{model.name}}
+        <div class="vtl-node-content" v-if="!editable">
+          {{ model.name }}
         </div>
-        <input v-else class="vue-tree-input" type="text" ref="nodeInput" :value="model.name" @input="updateName" @blur="setUnEditable">
-        <div class="operation" v-show="isHover">
-          <span title="add tree node" @click.stop.prevent="addChild(false)" v-if="!model.isLeaf">
-            <slot name="addTreeNode">
-              <i class="vue-tree-icon icon-folder-plus-e"></i>
+        <input
+          v-else
+          class="vtl-input"
+          type="text"
+          ref="nodeInput"
+          :value="model.name"
+          @input="updateName"
+          @blur="setUnEditable"
+        />
+        <div class="vtl-operation" v-show="isHover">
+          <span
+            title="add tree node"
+            @click.stop.prevent="addChild(false)"
+            v-if="!model.isLeaf && !model.addTreeNodeDisabled"
+          >
+            <slot
+              name="addTreeNodeIcon"
+              :expanded="expanded"
+              :model="model"
+              :root="rootNode"
+            >
+              <i class="vtl-icon vtl-icon-folder-plus-e"></i>
             </slot>
           </span>
-          <span title="add tree node" @click.stop.prevent="addChild(true)" v-if="!model.isLeaf">
-            <slot name="addLeafNode">
-              <i class="vue-tree-icon icon-plus"></i>
+          <span
+            title="add leaf node"
+            @click.stop.prevent="addChild(true)"
+            v-if="!model.isLeaf && !model.addLeafNodeDisabled"
+          >
+            <slot
+              name="addLeafNodeIcon"
+              :expanded="expanded"
+              :model="model"
+              :root="rootNode"
+            >
+              <i class="vtl-icon vtl-icon-plus"></i>
             </slot>
           </span>
-          <span title="edit" @click.stop.prevent="setEditable">
-            <slot name="edit">
-              <i class="vue-tree-icon icon-edit"></i>
+          <span
+            title="edit"
+            @click.stop.prevent="setEditable"
+            v-if="!model.editNodeDisabled"
+          >
+            <slot
+              name="editNodeIcon"
+              :expanded="expanded"
+              :model="model"
+              :root="rootNode"
+            >
+              <i class="vtl-icon vtl-icon-edit"></i>
             </slot>
           </span>
-          <span title="delete" @click.stop.prevent="delNode">
-            <slot name="edit">
-              <i class="vue-tree-icon icon-trash"></i>
+          <span
+            title="delete"
+            @click.stop.prevent="delNode"
+            v-if="!model.delNodeDisabled"
+          >
+            <slot
+              name="delNodeIcon"
+              :expanded="expanded"
+              :model="model"
+              :root="rootNode"
+            >
+              <i class="vtl-icon vtl-icon-trash"></i>
             </slot>
           </span>
         </div>
       </div>
 
-      <div v-if="model.children && model.children.length > 0 && expanded"
-        class="border bottom"
-        :class="{'active': isDragEnterBottom}"
-        @drop="dropBottom"
+      <div
+        v-if="model.children && model.children.length > 0 && expanded"
+        class="vtl-border vtl-bottom"
+        :class="{'vtl-active': isDragEnterBottom}"
+        @drop="dropAfter"
         @dragenter="dragEnterBottom"
-        @dragover='dragOverBottom'
-        @dragleave="dragLeaveBottom"></div>
+        @dragover="dragOverBottom"
+        @dragleave="dragLeaveBottom"
+      ></div>
     </div>
 
-    <div :class="{'tree-margin': model.name !== 'root'}" v-show="expanded" v-if="isFolder">
-      <item v-for="model in model.children"
+    <div
+      :class="{'vtl-tree-margin': model.name !== 'root'}"
+      v-show="model.name === 'root' || expanded"
+      v-if="isFolder"
+    >
+      <item
+        v-for="model in model.children"
         :default-tree-node-name="defaultTreeNodeName"
         :default-leaf-node-name="defaultLeafNodeName"
+        :default-expanded="defaultExpanded"
         :model="model"
-        :key='model.id'>
+        :key="model.id"
+      >
+        <template v-slot:addTreeNodeIcon="slotProps">
+          <slot name="addTreeNodeIcon" v-bind="slotProps" />
+        </template>
+        <template v-slot:addLeafNodeIcon="slotProps">
+          <slot name="addLeafNodeIcon" v-bind="slotProps" />
+        </template>
+        <template v-slot:editNodeIcon="slotProps">
+          <slot name="editNodeIcon" v-bind="slotProps" />
+        </template>
+        <template v-slot:delNodeIcon="slotProps">
+          <slot name="delNodeIcon" v-bind="slotProps" />
+        </template>
+        <template v-slot:leafNodeIcon="slotProps">
+          <slot name="leafNodeIcon" v-bind="slotProps" />
+        </template>
+        <template v-slot:treeNodeIcon="slotProps">
+          <slot name="treeNodeIcon" v-bind="slotProps" />
+        </template>
       </item>
     </div>
   </div>
 </template>
 
 <script>
-  import { Tree, TreeNode } from './Tree.js'
-  import { addHandler, removeHandler } from './tools.js'
+import {TreeNode} from './Tree.js'
+import {addHandler, removeHandler} from './tools.js'
 
-  let fromComp = null
+let compInOperation = null
+
+export default {
+  data: function() {
+    return {
+      isHover: false,
+      editable: false,
+      isDragEnterUp: false,
+      isDragEnterBottom: false,
+      isDragEnterNode: false,
+      expanded: this.defaultExpanded
+    }
+  },
+  props: {
+    model: {
+      type: Object
+    },
+    defaultLeafNodeName: {
+      type: String,
+      default: 'New leaf node'
+    },
+    defaultTreeNodeName: {
+      type: String,
+      default: 'New tree node'
+    },
+    defaultExpanded: {
+      type: Boolean,
+      default: true
+    }
+  },
+  computed: {
+    rootNode() {
+      var node = this.$parent
+      while (node._props.model.name !== 'root') {
+        node = node.$parent
+      }
+      return node
+    },
+
+    caretClass() {
+      return this.expanded ? 'vtl-icon-caret-down' : 'vtl-icon-caret-right'
+    },
+
+    isFolder() {
+      return this.model.children && this.model.children.length
+    },
+
+    treeNodeClass() {
+      const {
+        model: {dragDisabled, disabled},
+        isDragEnterNode
+      } = this
 
-  export default {
-    data: function () {
       return {
-        isHover: false,
-        editable: false,
-        isDragEnterUp: false,
-        isDragEnterBottom: false,
-        isDragEnterNode: false,
-        expanded: true
+        'vtl-node-main': true,
+        'vtl-active': isDragEnterNode,
+        'vtl-drag-disabled': dragDisabled,
+        'vtl-disabled': disabled
       }
-    },
-    props: {
-      model: {
-        type: Object
-      },
-      defaultLeafNodeName: {
-        type: String,
-        default: 'New leaf node'
-      },
-      defaultTreeNodeName: {
-        type: String,
-        default: 'New tree node'
+    }
+  },
+  beforeCreate() {
+    this.$options.components.item = require('./VueTreeList').default
+  },
+  mounted() {
+    const vm = this
+    addHandler(window, 'keyup', function(e) {
+      // click enter
+      if (e.keyCode === 13 && vm.editable) {
+        vm.editable = false
       }
-    },
-    computed: {
-      itemIconClass () {
-        return this.model.isLeaf ? 'icon-file' : 'icon-folder'
-      },
-
-      caretClass () {
-        return this.expanded ? 'icon-caret-down' : 'icon-caret-right'
-      },
-
-      isFolder() {
-        return this.model.children &&
-          this.model.children.length
-      }
-    },
-    mounted () {
-      const vm = this
-      addHandler(window, 'keyup', function (e) {
-        // click enter
-        if (e.keyCode === 13 && vm.editable) {
-          vm.editable = false
-        }
+    })
+  },
+  beforeDestroy() {
+    removeHandler(window, 'keyup')
+  },
+  methods: {
+    updateName(e) {
+      var oldName = this.model.name
+      this.model.changeName(e.target.value)
+      this.rootNode.$emit('change-name', {
+        id: this.model.id,
+        oldName: oldName,
+        newName: e.target.value
       })
     },
-    beforeDestroy () {
-      removeHandler(window, 'keyup')
+
+    delNode() {
+      this.rootNode.$emit('delete-node', this.model)
     },
-    methods: {
-      updateName (e) {
-        this.model.changeName(e.target.value)
-      },
 
-      delNode () {
-        const vm = this
-        if (window.confirm('Are you sure?')) {
-          vm.model.remove()
-        }
-      },
+    setEditable() {
+      this.editable = true
+      this.$nextTick(() => {
+        const $input = this.$refs.nodeInput
+        $input.focus()
+        $input.setSelectionRange(0, $input.value.length)
+      })
+    },
 
-      setEditable () {
-        this.editable = true
-        this.$nextTick(() => {
-          this.$refs.nodeInput.focus()
-//          fireFocusEvent(this.$refs.nodeInput)
-        })
-      },
+    setUnEditable() {
+      this.editable = false
+    },
 
-      setUnEditable () {
-        this.editable = false
-      },
-
-      toggle() {
-        if (this.isFolder) {
-          this.expanded = !this.expanded
-        }
-      },
-
-      mouseOver(e) {
-        this.isHover = true
-      },
-
-      mouseOut(e) {
-        this.isHover = false
-      },
-
-      click() {
-        var node = this.$parent
-        var clickModel = this.model
-        while (node._props.model.name !== 'root') {
-          node = node.$parent
-        }
-        node.$emit('click', clickModel)
-      },
-
-      addChild(isLeaf) {
-        const name = isLeaf ? this.defaultLeafNodeName : this.defaultTreeNodeName
-        this.expanded = true
-        var node = new TreeNode({ name, isLeaf })
-        this.model.addChildren(node, true)
-      },
-
-      dragStart(e) {
-        if (!this.model.dragDisabled) {
-          fromComp = this
-          // for firefox
-          e.dataTransfer.setData("data","data");
-          e.dataTransfer.effectAllowed = 'move'
-          return true
-        }
-        return false
-      },
-      dragEnd(e) {
-        fromComp = null
-      },
-      dragOver(e) {
-        e.preventDefault()
-        return true
-      },
-      dragEnter(e) {
-        if (!fromComp) return
-        if (this.model.isLeaf) return
-        this.isDragEnterNode = true
-      },
-      dragLeave(e) {
-        this.isDragEnterNode = false
-      },
-      drop(e) {
-        if (!fromComp) return
-        fromComp.model.moveInto(this.model)
-        this.isDragEnterNode = false
-      },
-
-      dragEnterUp () {
-        if (!fromComp) return
-        this.isDragEnterUp = true
-      },
-      dragOverUp (e) {
-        e.preventDefault()
-        return true
-      },
-      dragLeaveUp () {
-        if (!fromComp) return
-        this.isDragEnterUp = false
-      },
-      dropUp () {
-        if (!fromComp) return
-        fromComp.model.insertBefore(this.model)
-        this.isDragEnterUp = false
-      },
-
-      dragEnterBottom () {
-        if (!fromComp) return
-        this.isDragEnterBottom = true
-      },
-      dragOverBottom (e) {
-        e.preventDefault()
-        return true
-      },
-      dragLeaveBottom () {
-        if (!fromComp) return
-        this.isDragEnterBottom = false
-      },
-      dropBottom () {
-        if (!fromComp) return
-        fromComp.model.insertAfter(this.model)
-        this.isDragEnterBottom = false
+    toggle() {
+      if (this.isFolder) {
+        this.expanded = !this.expanded
       }
     },
-    beforeCreate () {
-      this.$options.components.item = require('./VueTreeList.vue')
+
+    mouseOver() {
+      if (this.model.disabled) return
+      this.isHover = true
+    },
+
+    mouseOut() {
+      this.isHover = false
+    },
+
+    click() {
+      this.rootNode.$emit('click', this.model)
+    },
+
+    addChild(isLeaf) {
+      const name = isLeaf ? this.defaultLeafNodeName : this.defaultTreeNodeName
+      this.expanded = true
+      var node = new TreeNode({name, isLeaf})
+      this.model.addChildren(node, true)
+      this.rootNode.$emit('add-node', node)
+    },
+
+    dragStart(e) {
+      if (!(this.model.dragDisabled || this.model.disabled)) {
+        compInOperation = this
+        // for firefox
+        e.dataTransfer.setData('data', 'data')
+        e.dataTransfer.effectAllowed = 'move'
+        return true
+      }
+      return false
+    },
+    dragEnd() {
+      compInOperation = null
+    },
+    dragOver(e) {
+      e.preventDefault()
+      return true
+    },
+    dragEnter() {
+      if (!compInOperation) return
+      if (this.model.isLeaf) return
+      this.isDragEnterNode = true
+    },
+    dragLeave() {
+      this.isDragEnterNode = false
+    },
+    drop() {
+      if (!compInOperation) return
+      const oldParent = compInOperation.model.parent
+      compInOperation.model.moveInto(this.model)
+      this.isDragEnterNode = false
+      this.rootNode.$emit('drop', {
+        target: this.model,
+        node: compInOperation.model,
+        src: oldParent
+      })
+    },
+
+    dragEnterUp() {
+      if (!compInOperation) return
+      this.isDragEnterUp = true
+    },
+    dragOverUp(e) {
+      e.preventDefault()
+      return true
+    },
+    dragLeaveUp() {
+      if (!compInOperation) return
+      this.isDragEnterUp = false
+    },
+    dropBefore() {
+      if (!compInOperation) return
+      const oldParent = compInOperation.model.parent
+      compInOperation.model.insertBefore(this.model)
+      this.isDragEnterUp = false
+      this.rootNode.$emit('drop-before', {
+        target: this.model,
+        node: compInOperation.model,
+        src: oldParent
+      })
+    },
+
+    dragEnterBottom() {
+      if (!compInOperation) return
+      this.isDragEnterBottom = true
+    },
+    dragOverBottom(e) {
+      e.preventDefault()
+      return true
+    },
+    dragLeaveBottom() {
+      if (!compInOperation) return
+      this.isDragEnterBottom = false
+    },
+    dropAfter() {
+      if (!compInOperation) return
+      const oldParent = compInOperation.model.parent
+      compInOperation.model.insertAfter(this.model)
+      this.isDragEnterBottom = false
+      this.rootNode.$emit('drop-after', {
+        target: this.model,
+        node: compInOperation.model,
+        src: oldParent
+      })
     }
   }
+}
 </script>
 
-<style lang="less" rel="stylesheet/less" scoped>
-  @font-face {
-    font-family: 'icomoon';
-    src:  url('fonts/icomoon.eot?ui1hbx');
-    src:  url('fonts/icomoon.eot?ui1hbx#iefix') format('embedded-opentype'),
+<style lang="less" rel="stylesheet/less">
+@font-face {
+  font-family: 'icomoon';
+  src: url('fonts/icomoon.eot?ui1hbx');
+  src: url('fonts/icomoon.eot?ui1hbx#iefix') format('embedded-opentype'),
     url('fonts/icomoon.ttf?ui1hbx') format('truetype'),
     url('fonts/icomoon.woff?ui1hbx') format('woff'),
     url('fonts/icomoon.svg?ui1hbx#icomoon') format('svg');
-    font-weight: normal;
-    font-style: normal;
-  }
+  font-weight: normal;
+  font-style: normal;
+}
 
-  .vue-tree-icon {
-    /* use !important to prevent issues with browser extensions that change fonts */
-    font-family: 'icomoon' !important;
-    speak: none;
-    font-style: normal;
-    font-weight: normal;
-    font-variant: normal;
-    text-transform: none;
-    line-height: 1;
+.vtl-icon {
+  /* use !important to prevent issues with browser extensions that change fonts */
+  font-family: 'icomoon' !important;
+  speak: none;
+  font-style: normal;
+  font-weight: normal;
+  font-variant: normal;
+  text-transform: none;
+  line-height: 1;
 
-    /* Better Font Rendering =========== */
-    -webkit-font-smoothing: antialiased;
-    -moz-osx-font-smoothing: grayscale;
-    &.item-icon {
-      margin-right: 4px;
-      &:hover {
-        color: inherit;
-      }
-    }
+  /* Better Font Rendering =========== */
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+  &.vtl-menu-icon {
+    margin-right: 4px;
     &:hover {
-      color: blue;
+      color: inherit;
     }
   }
+  &:hover {
+    color: blue;
+  }
+}
 
-  .icon-file:before {
-    content: "\e906";
-  }
-  .icon-folder:before {
-    content: "\e907";
-  }
-  .icon-caret-down:before {
-    content: "\e900";
-  }
-  .icon-caret-right:before {
-    content: "\e901";
-  }
-  .icon-edit:before {
-    content: "\e902";
-  }
-  .icon-folder-plus-e:before {
-    content: "\e903";
-  }
-  .icon-plus:before {
-    content: "\e904";
-  }
-  .icon-trash:before {
-    content: "\e905";
-  }
+.vtl-icon-file:before {
+  content: '\e906';
+}
+.vtl-icon-folder:before {
+  content: '\e907';
+}
+.vtl-icon-caret-down:before {
+  content: '\e901';
+}
+.vtl-icon-caret-right:before {
+  content: '\e900';
+}
+.vtl-icon-edit:before {
+  content: '\e902';
+}
+.vtl-icon-folder-plus-e:before {
+  content: '\e903';
+}
+.vtl-icon-plus:before {
+  content: '\e904';
+}
+.vtl-icon-trash:before {
+  content: '\e905';
+}
 
-
-  .border {
-    height: 5px;
-    &.up {
-      margin-top: -5px;
-      background-color: transparent;
-    }
-    &.bottom {
-      background-color: transparent;
-    }
-    &.active {
-      border-bottom: 3px dashed blue;
-      /*background-color: blue;*/
-    }
+.vtl-border {
+  height: 5px;
+  &.vtl-up {
+    margin-top: -5px;
+    background-color: transparent;
   }
-
-  .tree-node {
-    display: flex;
-    align-items: center;
-    padding: 5px 0 5px 1rem;
-    .input {
-      border: none;
-      max-width: 150px;
-      border-bottom: 1px solid blue;
-    }
-    &:hover {
-      background-color: #f0f0f0;
-    }
-    &.active {
-      outline: 2px dashed pink;
-    }
-    .caret {
-      margin-left: -1rem;
-    }
-    .operation {
-      margin-left: 2rem;
-      letter-spacing: 1px;
-    }
+  &.vtl-bottom {
+    background-color: transparent;
   }
-
-
-  .item {
-    cursor: pointer;
+  &.vtl-active {
+    border-bottom: 3px dashed blue;
+    /*background-color: blue;*/
   }
-  .tree-margin {
-    margin-left: 2em;
+}
+
+.vtl-node-main {
+  display: flex;
+  align-items: center;
+  padding: 5px 0 5px 1rem;
+  .vtl-input {
+    border: none;
+    max-width: 150px;
+    border-bottom: 1px solid blue;
   }
+  &:hover {
+    background-color: #f0f0f0;
+  }
+  &.vtl-active {
+    outline: 2px dashed pink;
+  }
+  .vtl-caret {
+    margin-left: -1rem;
+  }
+  .vtl-operation {
+    margin-left: 2rem;
+    letter-spacing: 1px;
+  }
+}
+
+.vtl-item {
+  cursor: pointer;
+}
+.vtl-tree-margin {
+  margin-left: 2em;
+}
 </style>

src/index.js

@@ -1,7 +1,8 @@
 /**
  * Created by ayou on 17/7/21.
  */
-exports.VueTreeList = require('./VueTreeList.vue')
-exports.TreeNode = require('./Tree.js').TreeNode
-exports.Tree = require('./Tree.js').Tree
-// exports.Record = require('./Tree.js').Record
+
+import VueTreeList from "./VueTreeList";
+import { Tree, TreeNode } from "./Tree";
+
+export { Tree, TreeNode, VueTreeList };

src/tools.js

@@ -4,28 +4,42 @@
 
 var handlerCache
 
-exports.addHandler = function(element, type, handler) {
+export const addHandler = function (element, type, handler) {
   handlerCache = handler
   if (element.addEventListener) {
-    element.addEventListener(type, handler, false);
+    element.addEventListener(type, handler, false)
   } else if (element.attachEvent) {
-    element.attachEvent("on" + type, handler);
+    element.attachEvent('on' + type, handler)
   } else {
-    element["on" + type] = handler;
+    element['on' + type] = handler
   }
 }
 
-exports.removeHandler = function (element, type) {
+export const removeHandler = function (element, type) {
   if (element.removeEventListener) {
-    element.removeEventListener(type, handlerCache, false);
+    element.removeEventListener(type, handlerCache, false)
   } else if (element.detachEvent) {
-    element.detachEvent("on" + type, handlerCache);
+    element.detachEvent('on' + type, handlerCache)
   } else {
-    element["on" + type] = null;
+    element['on' + type] = null
   }
 }
 
-// exports.fireFocusEvent = function (ele) {
-//   var event = new FocusEvent()
-//   ele.dispatch(event)
-// }
+// depth first search
+export const traverseTree = (root) => {
+  var newRoot = {}
+
+  for (var k in root) {
+    if (k !== 'children' && k !== 'parent') {
+      newRoot[k] = root[k]
+    }
+  }
+
+  if (root.children && root.children.length > 0) {
+    newRoot.children = []
+    for (var i = 0, len = root.children.length; i < len; i++) {
+      newRoot.children.push(traverseTree(root.children[i]))
+    }
+  }
+  return newRoot
+}

tests/unit/__snapshots__/render.spec.js.snap

@@ -0,0 +1,72 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`Render render correctly 1`] = `
+<div class="vtl">
+  <!---->
+  <div class="">
+    <div class="vtl">
+      <div id="1" class="vtl-node vtl-tree-node">
+        <div class="vtl-border vtl-up"></div>
+        <div draggable="false" class="vtl-node-main vtl-drag-disabled"><span class="vtl-caret vtl-is-small"><i class="vtl-icon vtl-icon-caret-right"></i></span> <span><i class="vtl-icon vtl-menu-icon vtl-icon-folder"></i></span>
+          <div class="vtl-node-content">
+            Node 1
+          </div>
+          <div class="vtl-operation" style="display: none;">
+            <!---->
+            <!---->
+            <!---->
+            <!---->
+          </div>
+        </div>
+        <!---->
+      </div>
+      <div class="vtl-tree-margin" style="display: none;">
+        <div class="vtl">
+          <div id="2" class="vtl-node vtl-leaf-node">
+            <div class="vtl-border vtl-up"></div>
+            <div draggable="true" class="vtl-node-main">
+              <!----> <span><i class="vtl-icon vtl-menu-icon vtl-icon-file"></i></span>
+              <div class="vtl-node-content">
+                Node 1-2
+              </div>
+              <div class="vtl-operation" style="display: none;">
+                <!---->
+                <!----> <span title="edit"><i class="vtl-icon vtl-icon-edit"></i></span> <span title="delete"><i class="vtl-icon vtl-icon-trash"></i></span></div>
+            </div>
+            <!---->
+          </div>
+          <!---->
+        </div>
+      </div>
+    </div>
+    <div class="vtl">
+      <div id="3" class="vtl-node vtl-tree-node">
+        <div class="vtl-border vtl-up"></div>
+        <div draggable="true" class="vtl-node-main vtl-disabled">
+          <!----> <span><i class="vtl-icon vtl-menu-icon vtl-icon-folder"></i></span>
+          <div class="vtl-node-content">
+            Node 2
+          </div>
+          <div class="vtl-operation" style="display: none;"><span title="add tree node"><i class="vtl-icon vtl-icon-folder-plus-e"></i></span> <span title="add leaf node"><i class="vtl-icon vtl-icon-plus"></i></span> <span title="edit"><i class="vtl-icon vtl-icon-edit"></i></span> <span title="delete"><i class="vtl-icon vtl-icon-trash"></i></span></div>
+        </div>
+        <!---->
+      </div>
+      <!---->
+    </div>
+    <div class="vtl">
+      <div id="4" class="vtl-node vtl-tree-node">
+        <div class="vtl-border vtl-up"></div>
+        <div draggable="true" class="vtl-node-main">
+          <!----> <span><i class="vtl-icon vtl-menu-icon vtl-icon-folder"></i></span>
+          <div class="vtl-node-content">
+            Node 3
+          </div>
+          <div class="vtl-operation" style="display: none;"><span title="add tree node"><i class="vtl-icon vtl-icon-folder-plus-e"></i></span> <span title="add leaf node"><i class="vtl-icon vtl-icon-plus"></i></span> <span title="edit"><i class="vtl-icon vtl-icon-edit"></i></span> <span title="delete"><i class="vtl-icon vtl-icon-trash"></i></span></div>
+        </div>
+        <!---->
+      </div>
+      <!---->
+    </div>
+  </div>
+</div>
+`;

tests/unit/__snapshots__/slot.spec.js.snap

@@ -0,0 +1,53 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`Slot render slot correctly 1`] = `
+<div class="vtl">
+  <!---->
+  <div class="">
+    <div class="vtl">
+      <div id="t1" class="vtl-node vtl-tree-node">
+        <div class="vtl-border vtl-up"></div>
+        <div draggable="true" class="vtl-node-main"><span class="vtl-caret vtl-is-small"><i class="vtl-icon vtl-icon-caret-down"></i></span> <span><span class="tree-node-icon icon">❀</span></span>
+          <div class="vtl-node-content">
+            Node 1
+          </div>
+          <div class="vtl-operation" style="display: none;"><span title="add tree node"><span class="add-tree-node-icon">📂</span></span> <span title="add leaf node"><span class="icon">＋</span></span> <span title="edit"><span class="icon">📃</span></span> <span title="delete"><span></span></span></div>
+        </div>
+        <div class="vtl-border vtl-bottom"></div>
+      </div>
+      <div class="vtl-tree-margin">
+        <div class="vtl">
+          <div id="t11" class="vtl-node vtl-leaf-node">
+            <div class="vtl-border vtl-up"></div>
+            <div draggable="true" class="vtl-node-main">
+              <!----> <span><span class="icon">🍃</span></span>
+              <div class="vtl-node-content">
+                Node 1-1
+              </div>
+              <div class="vtl-operation" style="display: none;">
+                <!---->
+                <!----> <span title="edit"><span class="icon">📃</span></span> <span title="delete"><span class="del-node-icon">✂️</span></span></div>
+            </div>
+            <!---->
+          </div>
+          <!---->
+        </div>
+      </div>
+    </div>
+    <div class="vtl">
+      <div id="t2" class="vtl-node vtl-tree-node">
+        <div class="vtl-border vtl-up"></div>
+        <div draggable="true" class="vtl-node-main">
+          <!----> <span><span class="tree-node-icon icon">❀</span></span>
+          <div class="vtl-node-content">
+            Node 2
+          </div>
+          <div class="vtl-operation" style="display: none;"><span title="add tree node"><span class="add-tree-node-icon">📂</span></span> <span title="add leaf node"><span class="icon">＋</span></span> <span title="edit"><span class="icon">📃</span></span> <span title="delete"><span class="del-node-icon">✂️</span></span></div>
+        </div>
+        <!---->
+      </div>
+      <!---->
+    </div>
+  </div>
+</div>
+`;

tests/unit/drag.spec.js

@@ -0,0 +1,87 @@
+import Vue from 'vue'
+import {mount} from '@vue/test-utils'
+import {Tree, VueTreeList} from '@/index'
+
+describe('Drag', () => {
+  let wrapper
+
+  beforeEach(() => {
+    const tree = new Tree([
+      {
+        name: 'Node 1',
+        id: 't1',
+        pid: 0,
+        children: [
+          {
+            name: 'Node 1-1',
+            id: 't11',
+            isLeaf: true,
+            pid: 't1'
+          },
+          {
+            name: 'Node 1-2',
+            id: 't12',
+            pid: 't1'
+          }
+        ]
+      },
+      {
+        name: 'Node 2',
+        id: 't2',
+        pid: 0
+      },
+      {
+        name: 'Node 3',
+        id: 't3',
+        pid: 0
+      }
+    ])
+    wrapper = mount(VueTreeList, {propsData: {model: new Tree([])}})
+    wrapper.setProps({model: tree})
+  })
+
+  it('drag before', done => {
+    const $tree2 = wrapper.find('#t2 .vtl-node-main')
+    const $tree1Up = wrapper.find('#t1 .vtl-up')
+    $tree2.trigger('dragstart', { dataTransfer: { setData: () => {} }})
+    $tree1Up.trigger('drop')
+    Vue.nextTick(() => {
+      expect(wrapper.find('.vtl-node').attributes('id')).toBe('t2')
+      done()
+    })
+  })
+
+  it('drag after', done => {
+    const $tree3 = wrapper.find('#t3 .vtl-node-main')
+    const $tree1Bottom = wrapper.find('#t1 .vtl-bottom')
+    $tree3.trigger('dragstart', { dataTransfer: { setData: () => {} }})
+    $tree1Bottom.trigger('drop')
+    Vue.nextTick(() => {
+      expect(wrapper.findAll('.vtl-tree-node').at(2).attributes('id')).toBe('t3')
+      done()
+    })
+  })
+
+  it('drag into', done => {
+    const $tree3 = wrapper.find('#t3 .vtl-node-main')
+    const $tree1 = wrapper.find('#t1 .vtl-node-main')
+    $tree3.trigger('dragstart', { dataTransfer: { setData: () => {} }})
+    $tree1.trigger('drop')
+    Vue.nextTick(() => {
+      expect(wrapper.find('#t1 + .vtl-tree-margin .vtl-node').attributes('id')).toBe('t3')
+      done()
+    })
+  })
+
+  it('cannot drag ancestor into child', done => {
+    const snapshot = wrapper.html()
+    const $tree1 = wrapper.find('#t1 .vtl-node-main')
+    const $tree1Child = wrapper.find('#t12 .vtl-node-main')
+    $tree1.trigger('dragstart', { dataTransfer: { setData: () => {} }})
+    $tree1Child.trigger('drop')
+    Vue.nextTick(() => {
+      expect(wrapper.html()).toBe(snapshot)
+      done()
+    })
+  })
+})

tests/unit/operation.spec.js

@@ -0,0 +1,86 @@
+import Vue from 'vue'
+import {mount} from '@vue/test-utils'
+import {Tree, VueTreeList} from '@/index'
+
+describe('Operation', () => {
+  let wrapper
+
+  beforeEach(() => {
+    const tree = new Tree([
+      {
+        name: 'Node 1',
+        id: 't1',
+        pid: 0,
+        children: [
+          {
+            name: 'Node 1-1',
+            id: 't11',
+            isLeaf: true,
+            pid: 't1'
+          }
+        ]
+      },
+      {
+        name: 'Node 2',
+        id: 't2',
+        pid: 0
+      }
+    ])
+    wrapper = mount(VueTreeList, {propsData: {model: new Tree([])}})
+    wrapper.setProps({model: tree})
+  })
+
+  it('delete leaf node', done => {
+    const $node11Trash = wrapper.find('#t11 [title="delete"]')
+    $node11Trash.trigger('click')
+    wrapper.emitted('delete-node')[0][0].remove()
+    Vue.nextTick(() => {
+      expect(wrapper.findAll('.vtl-node').length).toBe(2)
+      done()
+    })
+  })
+
+  it('delete tree node', done => {
+    const $node11Trash = wrapper.find('#t1 [title="delete"]')
+    $node11Trash.trigger('click')
+    wrapper.emitted('delete-node')[0][0].remove()
+    Vue.nextTick(() => {
+      expect(wrapper.findAll('.vtl-node').length).toBe(1)
+      done()
+    })
+  })
+
+  it('add leaf node', done => {
+    const $node1AddLeafNode = wrapper.find('#t1 [title="add leaf node"]')
+    $node1AddLeafNode.trigger('click')
+    Vue.nextTick(() => {
+      expect(wrapper.findAll('.vtl-leaf-node').length).toBe(2)
+      done()
+    })
+  })
+
+  it('add tree node', done => {
+    const $node1AddTreeNode = wrapper.find('#t1 [title="add tree node"]')
+    $node1AddTreeNode.trigger('click')
+    Vue.nextTick(() => {
+      expect(wrapper.findAll('.vtl-tree-node').length).toBe(3)
+      done()
+    })
+  })
+
+  it('change node name', done => {
+    const $node1Edit = wrapper.find('#t1 [title="edit"]')
+    $node1Edit.trigger('click')
+    Vue.nextTick(() => {
+      const $input = wrapper.find('#t1 .vtl-input')
+      $input.element.value = 'New Node 1'
+      $input.trigger('input')
+      var event = new KeyboardEvent('keyup', {keyCode: 13})
+      window.dispatchEvent(event)
+      Vue.nextTick(() => {
+        expect(wrapper.find('#t1').text()).toBe('New Node 1')
+        done()
+      })
+    })
+  })
+})

tests/unit/render.spec.js

@@ -0,0 +1,49 @@
+import {mount} from '@vue/test-utils'
+import {Tree, VueTreeList} from '@/index'
+
+describe('Render', () => {
+  it('render correctly', () => {
+    const tree = new Tree([
+      {
+        name: 'Node 1',
+        id: 1,
+        pid: 0,
+        dragDisabled: true,
+        addTreeNodeDisabled: true,
+        addLeafNodeDisabled: true,
+        editNodeDisabled: true,
+        delNodeDisabled: true,
+        children: [
+          {
+            name: 'Node 1-2',
+            id: 2,
+            isLeaf: true,
+            pid: 1
+          }
+        ]
+      },
+      {
+        name: 'Node 2',
+        id: 3,
+        pid: 0,
+        disabled: true
+      },
+      {
+        name: 'Node 3',
+        id: 4,
+        pid: 0
+      }
+    ])
+
+    const wrapper = mount(VueTreeList, {
+      propsData: {
+        model: tree,
+        defaultTreeNodeName: 'new node',
+        defaultLeafNodeName: 'new leaf',
+        defaultExpanded: false
+      }
+    })
+
+    expect(wrapper).toMatchSnapshot()
+  })
+})

tests/unit/slot.spec.js

@@ -0,0 +1,79 @@
+import Vue from 'vue'
+import {mount} from '@vue/test-utils'
+import {Tree, VueTreeList} from '@/index'
+
+describe('Slot', () => {
+  let wrapper
+
+  beforeEach(() => {
+    const tree = new Tree([
+      {
+        name: 'Node 1',
+        id: 't1',
+        pid: 0,
+        children: [
+          {
+            name: 'Node 1-1',
+            id: 't11',
+            isLeaf: true,
+            pid: 't1'
+          }
+        ]
+      },
+      {
+        name: 'Node 2',
+        id: 't2',
+        pid: 0
+      }
+    ])
+    wrapper = mount(VueTreeList, {
+      propsData: {model: new Tree([])},
+      scopedSlots: {
+        addTreeNodeIcon() {
+          return <span class="add-tree-node-icon">📂</span>
+        },
+        addLeafNodeIcon() {
+          return <span class="icon">＋</span>
+        },
+        editNodeIcon() {
+          return <span class="icon">📃</span>
+        },
+        delNodeIcon(slotProps) {
+          return (slotProps.model.isLeaf || !slotProps.model.children) ? <span class="del-node-icon">✂️</span> : <span />
+        },
+        leafNodeIcon() {
+          return <span class="icon">🍃</span>
+        },
+        treeNodeIcon(slotProps) {
+          return <span class="tree-node-icon icon">{ slotProps.model.children && slotProps.model.children.length > 0 && !slotProps.expanded ? '🌲' : '❀' }</span>
+        }
+      }
+    })
+    wrapper.setProps({model: tree})
+  })
+
+  it('render slot correctly', () => {
+    expect(wrapper).toMatchSnapshot()
+  })
+
+  it('toggle tree node show different icon', done => {
+    const $caretDown = wrapper.find('.vtl-icon-caret-down')
+    expect(wrapper.find('#t1 .tree-node-icon').text()).toBe('❀')
+    $caretDown.trigger('click')
+    Vue.nextTick(() => {
+      expect(wrapper.exists('.vtl-icon-caret-right')).toBe(true)
+      expect(wrapper.find('#t1 .tree-node-icon').text()).toBe('🌲')
+      done()
+    })
+  })
+
+  it('dont show ✂️ after add child ', done => {
+    const $addTreeNodeIcon = wrapper.find('#t2 .add-tree-node-icon')
+    expect(wrapper.find('#t2 .del-node-icon').exists()).toBe(true)
+    $addTreeNodeIcon.trigger('click')
+    Vue.nextTick(() => {
+      expect(wrapper.find('#t2 .del-node-icon').exists()).toBe(false)
+      done()
+    })
+  })
+})