From be3faa0aef28c551f6e21962605c73137f9ecbfa Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E8=A1=97=E8=A7=92=E5=B0=8F=E6=9E=97?= <1013335014@qq.com>
Date: Wed, 6 Nov 2024 18:16:02 +0800
Subject: [PATCH] =?UTF-8?q?Feat=EF=BC=9A=E6=96=B0=E5=A2=9E=E9=80=9A?=
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---
 simple-mind-map/src/constants/defaultOptions.js | 2 ++
 simple-mind-map/src/core/render/TextEdit.js     | 9 +++++++--
 simple-mind-map/src/plugins/RichText.js         | 8 ++++++--
 3 files changed, 15 insertions(+), 4 deletions(-)

diff --git a/simple-mind-map/src/constants/defaultOptions.js b/simple-mind-map/src/constants/defaultOptions.js
index de76933e..04974fbf 100644
--- a/simple-mind-map/src/constants/defaultOptions.js
+++ b/simple-mind-map/src/constants/defaultOptions.js
@@ -130,6 +130,8 @@ export const defaultOpt = {
   // 是否在存在一个激活节点时，当按下中文、英文、数字按键时自动进入文本编辑模式
   // 开启该特性后，需要给你的输入框绑定keydown事件，并禁止冒泡
   enableAutoEnterTextEditWhenKeydown: false,
+  // 当enableAutoEnterTextEditWhenKeydown选项开启时生效，当通过按键进入文本编辑时是否自动清空原有文本
+  autoEmptyTextWhenKeydownEnterEdit: false, 
   // 自定义对剪贴板文本的处理。当按ctrl+v粘贴时会读取用户剪贴板中的文本和图片，默认只会判断文本是否是普通文本和simple-mind-map格式的节点数据，如果你想处理其他思维导图的数据，比如processon、zhixi等，那么可以传递一个函数，接受当前剪贴板中的文本为参数，返回处理后的数据，可以返回两种类型：
   /*
     1.返回一个纯文本，那么会直接以该文本创建一个子节点
diff --git a/simple-mind-map/src/core/render/TextEdit.js b/simple-mind-map/src/core/render/TextEdit.js
index cc0d7009..57773b7e 100644
--- a/simple-mind-map/src/core/render/TextEdit.js
+++ b/simple-mind-map/src/core/render/TextEdit.js
@@ -265,7 +265,8 @@ export default class TextEdit {
       nodeTextEditZIndex,
       textAutoWrapWidth,
       selectTextOnEnterEditText,
-      openRealtimeRenderOnNodeTextEdit
+      openRealtimeRenderOnNodeTextEdit,
+      autoEmptyTextWhenKeydownEnterEdit
     } = this.mindMap.opt
     if (!isFromScale) {
       this.mindMap.emit('before_show_text_edit')
@@ -338,7 +339,11 @@ export default class TextEdit {
       this.textEditNode.style.background = this.getBackground(node)
     }
     this.textEditNode.style.zIndex = nodeTextEditZIndex
-    this.textEditNode.innerHTML = textLines.join('<br>')
+    if (isFromKeyDown && autoEmptyTextWhenKeydownEnterEdit) {
+      this.textEditNode.innerHTML = ''
+    } else {
+      this.textEditNode.innerHTML = textLines.join('<br>')
+    }
     this.textEditNode.style.minWidth =
       rect.width + this.textNodePaddingX * 2 + 'px'
     this.textEditNode.style.minHeight = rect.height + 'px'
diff --git a/simple-mind-map/src/plugins/RichText.js b/simple-mind-map/src/plugins/RichText.js
index f334eb2c..fbcd68ed 100644
--- a/simple-mind-map/src/plugins/RichText.js
+++ b/simple-mind-map/src/plugins/RichText.js
@@ -188,7 +188,8 @@ class RichText {
       textAutoWrapWidth,
       selectTextOnEnterEditText,
       transformRichTextOnEnterEdit,
-      openRealtimeRenderOnNodeTextEdit
+      openRealtimeRenderOnNodeTextEdit,
+      autoEmptyTextWhenKeydownEnterEdit
     } = this.mindMap.opt
     textAutoWrapWidth = node.hasCustomWidth()
       ? node.customTextWidth
@@ -279,7 +280,10 @@ class RichText {
     if (isEmptyText) {
       this.lostStyle = true
     }
-    if (noneEmptyNoneRichText) {
+    if (isFromKeyDown && autoEmptyTextWhenKeydownEnterEdit) {
+      this.textEditNode.innerHTML = ''
+      this.lostStyle = true
+    } else if (noneEmptyNoneRichText) {
       // 还不是富文本
       let text = String(nodeText).split(/\n/gim).join('<br>')
       let html = `<p>${text}</p>`