From b33fd1908a57583a9cd066315a827ba258be294f Mon Sep 17 00:00:00 2001
From: wanglin2 <1013335014@qq.com>
Date: Sun, 11 Jun 2023 22:21:03 +0800
Subject: [PATCH] =?UTF-8?q?Fix:=E4=BF=AE=E5=A4=8D=E5=AF=8C=E6=96=87?=
 =?UTF-8?q?=E6=9C=AC=E7=BC=96=E8=BE=91=E6=97=B6=E5=88=A0=E9=99=A4=E5=AE=8C?=
 =?UTF-8?q?=E6=89=80=E6=9C=89=E6=96=87=E6=9C=AC=E5=90=8E=E5=86=8D=E8=BE=93?=
 =?UTF-8?q?=E5=85=A5=E6=97=B6=E6=A0=B7=E5=BC=8F=E4=B8=A2=E5=A4=B1=E9=97=AE?=
 =?UTF-8?q?=E9=A2=98?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 simple-mind-map/src/plugins/RichText.js | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/simple-mind-map/src/plugins/RichText.js b/simple-mind-map/src/plugins/RichText.js
index a275baf6..4e38c231 100644
--- a/simple-mind-map/src/plugins/RichText.js
+++ b/simple-mind-map/src/plugins/RichText.js
@@ -41,6 +41,7 @@ class RichText {
     this.node = null
     this.styleEl = null
     this.cacheEditingText = ''
+    this.lostStyle = false
     this.initOpt()
     this.extendQuill()
     this.appendCss()
@@ -281,6 +282,20 @@ class RichText {
         )
       }
     })
+    this.quill.on('text-change', () => {
+      let contents = this.quill.getContents()
+      let len = contents.ops.length
+      // 如果编辑过程中删除所有字符，那么会丢失主题的样式
+      if (len <= 0 || (len === 1 && contents.ops[0].insert === '\n')) {
+        this.lostStyle = true
+        // 需要删除节点的样式数据
+        this.syncFormatToNodeConfig(null, true)
+      } else if (this.lostStyle) {
+        // 如果处于样式丢失状态，那么需要进行格式化加回样式
+        this.setTextStyleIfNotRichText(this.node)
+        this.lostStyle = false
+      }
+    })
   }
 
   // 选中全部