优化：1.节点激活状态切换不再触发历史记录；2.短时间多次触发历史记录只会添加最后一次的数据

simple-mind-map/src/BatchExecution.js

@@ -1,33 +1,4 @@
-//  在下一个事件循环里执行任务
+import { nextTick } from './utils'
-const nextTick = function (fn, ctx) {
-  let pending = false
-  let timerFunc = null
-  let handle = () => {
-    pending = false
-    ctx ? fn.call(ctx) : fn()
-  }
-  // 支持MutationObserver接口的话使用MutationObserver
-  if (typeof MutationObserver !== 'undefined') {
-    let counter = 1
-    let observer = new MutationObserver(handle)
-    let textNode = document.createTextNode(counter)
-    observer.observe(textNode, {
-      characterData: true // 设为 true 表示监视指定目标节点或子节点树中节点所包含的字符数据的变化
-    })
-    timerFunc = function () {
-      counter = (counter + 1) % 2 // counter会在0和1两者循环变化
-      textNode.data = counter // 节点变化会触发回调handle，
-    }
-  } else {
-    // 否则使用定时器
-    timerFunc = setTimeout
-  }
-  return function () {
-    if (pending) return
-    pending = true
-    timerFunc(handle, 0)
-  }
-}
 
 //  批量执行
 class BatchExecution {

simple-mind-map/src/Command.js

@@ -1,4 +1,4 @@
-import { copyRenderTree, simpleDeepClone } from './utils'
+import { copyRenderTree, simpleDeepClone, nextTick } from './utils'
 
 //  命令类
 class Command {
@@ -11,6 +11,7 @@ class Command {
     this.activeHistoryIndex = 0
     // 注册快捷键
     this.registerShortcutKeys()
+    this.addHistory = nextTick(this.addHistory, this)
   }
 
   //  清空历史数据
@@ -36,7 +37,7 @@ class Command {
       this.commands[name].forEach(fn => {
         fn(...args)
       })
-      if (name === 'BACK' || name === 'FORWARD') {
+      if (['BACK', 'FORWARD', 'SET_NODE_ACTIVE', 'CLEAR_ACTIVE_NODE'].includes(name)) {
         return
       }
       this.addHistory()
@@ -125,7 +126,7 @@ class Command {
 
   //  获取渲染树数据副本
   getCopyData() {
-    return copyRenderTree({}, this.mindMap.renderer.renderTree)
+    return copyRenderTree({}, this.mindMap.renderer.renderTree, true)
   }
 }
 

simple-mind-map/src/utils/index.js

@@ -122,12 +122,15 @@ export const simpleDeepClone = data => {
 }
 
 //  复制渲染树数据
-export const copyRenderTree = (tree, root) => {
+export const copyRenderTree = (tree, root, removeActiveState = false) => {
   tree.data = simpleDeepClone(root.data)
+  if (removeActiveState) {
+    tree.data.isActive = false
+  }
   tree.children = []
   if (root.children && root.children.length > 0) {
     root.children.forEach((item, index) => {
-      tree.children[index] = copyRenderTree({}, item)
+      tree.children[index] = copyRenderTree({}, item, removeActiveState)
     })
   }
   return tree
@@ -267,4 +270,35 @@ export const measureText = (text, { italic, bold, fontSize, fontFamily }) => {
 // 拼接font字符串
 export const joinFontStr = ({ italic, bold, fontSize, fontFamily }) => {
   return `${italic ? 'italic ' : ''} ${bold ? 'bold ' : ''} ${fontSize}px ${fontFamily} `
+}
+
+//  在下一个事件循环里执行任务
+export const nextTick = function (fn, ctx) {
+  let pending = false
+  let timerFunc = null
+  let handle = () => {
+    pending = false
+    ctx ? fn.call(ctx) : fn()
+  }
+  // 支持MutationObserver接口的话使用MutationObserver
+  if (typeof MutationObserver !== 'undefined') {
+    let counter = 1
+    let observer = new MutationObserver(handle)
+    let textNode = document.createTextNode(counter)
+    observer.observe(textNode, {
+      characterData: true // 设为 true 表示监视指定目标节点或子节点树中节点所包含的字符数据的变化
+    })
+    timerFunc = function () {
+      counter = (counter + 1) % 2 // counter会在0和1两者循环变化
+      textNode.data = counter // 节点变化会触发回调handle，
+    }
+  } else {
+    // 否则使用定时器
+    timerFunc = setTimeout
+  }
+  return function () {
+    if (pending) return
+    pending = true
+    timerFunc(handle, 0)
+  }
 }