From 7a6bf2cdb4a2d7dccae36874c72012835fce4d52 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=8A=9B=E7=9A=93?= <lihao.ylh@alibaba-inc.com>
Date: Mon, 7 Sep 2020 14:19:09 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=E6=8B=96=E6=8B=BD=E6=97=B6=E8=A6=81?=
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---
 .../designer/src/document/node/node-children.ts |  7 +++++++
 packages/designer/src/document/node/node.ts     | 17 +++++++++++++++++
 2 files changed, 24 insertions(+)

diff --git a/packages/designer/src/document/node/node-children.ts b/packages/designer/src/document/node/node-children.ts
index 3e0f8814a..527b72c61 100644
--- a/packages/designer/src/document/node/node-children.ts
+++ b/packages/designer/src/document/node/node-children.ts
@@ -106,6 +106,13 @@ export class NodeChildren {
     });
   }
 
+  unlinkChild(node: Node) {
+    const i = this.children.indexOf(node);
+    if (i < 0) {
+      return false;
+    }
+    this.children.splice(i, 1);
+  }
   /**
    * 删除一个节点
    */
diff --git a/packages/designer/src/document/node/node.ts b/packages/designer/src/document/node/node.ts
index e480d6b6e..5b11fc097 100644
--- a/packages/designer/src/document/node/node.ts
+++ b/packages/designer/src/document/node/node.ts
@@ -261,6 +261,15 @@ export class Node<Schema extends NodeSchema = NodeSchema> {
       return;
     }
 
+    // 解除老的父子关系，但不需要真的删除节点
+    if (this._parent) {
+      if (this.isSlot()) {
+        this._parent.unlinkSlot(this);
+      } else {
+        this._parent.children.unlinkChild(this);
+      }
+    }
+    // 建立新的父子关系
     this._parent = parent;
     if (parent) {
       this.document.removeWillPurge(this);
@@ -640,6 +649,14 @@ export class Node<Schema extends NodeSchema = NodeSchema> {
     return comparePosition(this, otherNode);
   }
 
+  unlinkSlot(slotNode: Node) {
+    const i = this._slots.indexOf(slotNode);
+    if (i < 0) {
+      return false;
+    }
+    this._slots.splice(i, 1);
+  }
+
   /**
    * 删除一个Slot节点
    */