From f120df571b17f6beffb1f6b51ae36fd27be5cfa0 Mon Sep 17 00:00:00 2001
From: "mario.gk" <mario.gk@alibaba-inc.com>
Date: Tue, 22 Sep 2020 15:17:15 +0800
Subject: [PATCH] =?UTF-8?q?feat:=20=E6=94=AF=E6=8C=81=20node.children.onIn?=
 =?UTF-8?q?sert?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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---
 packages/designer/src/document/node/node-children.ts | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/packages/designer/src/document/node/node-children.ts b/packages/designer/src/document/node/node-children.ts
index d21b0c288..0cc585f70 100644
--- a/packages/designer/src/document/node/node-children.ts
+++ b/packages/designer/src/document/node/node-children.ts
@@ -179,6 +179,7 @@ export class NodeChildren {
     }
 
     this.emitter.emit('change');
+    this.emitter.emit('insert', node);
     // this.reportModified(node, this.owner, { type: 'insert' });
 
     // check condition group
@@ -330,6 +331,13 @@ export class NodeChildren {
     };
   }
 
+  onInsert(fn: (node: Node) => void) {
+    this.emitter.on('insert', fn);
+    return () => {
+      this.emitter.removeListener('insert', fn);
+    };
+  }
+
   get [Symbol.toStringTag]() {
     // 保证向前兼容性
     return 'Array';