fix undo-redo

src/Struct/Item.js

@@ -55,14 +55,16 @@ export default class Item {
   /**
    * Copy the effect of struct
    */
-  _copy () {
+  _copy (undeleteChildren, copyPosition) {
     let struct = new this.constructor()
+    if (copyPosition) {
       struct._origin = this._left
       struct._left = this._left
       struct._right = this
       struct._right_origin = this
       struct._parent = this._parent
       struct._parentSub = this._parentSub
+    }
     return struct
   }
   get _lastId () {

src/Struct/ItemJSON.js

@@ -6,8 +6,8 @@ export default class ItemJSON extends Item {
     super()
     this._content = null
   }
-  _copy () {
+  _copy (undeleteChildren, copyPosition) {
-    let struct = super._copy()
+    let struct = super._copy(undeleteChildren, copyPosition)
     struct._content = this._content
     return struct
   }

src/Struct/ItemString.js

@@ -6,8 +6,8 @@ export default class ItemString extends Item {
     super()
     this._content = null
   }
-  _copy () {
+  _copy (undeleteChildren, copyPosition) {
-    let struct = super._copy()
+    let struct = super._copy(undeleteChildren, copyPosition)
     struct._content = this._content
     return struct
   }

src/Struct/Type.js

@@ -79,15 +79,16 @@ export default class Type extends Item {
       type = type._parent
     }
   }
-  _copy (undeleteChildren) {
+  _copy (undeleteChildren, copyPosition) {
-    let copy = super._copy()
+    let copy = super._copy(undeleteChildren, copyPosition)
     let map = new Map()
     copy._map = map
     for (let [key, value] of this._map) {
       if (undeleteChildren.has(value) || !value.deleted) {
-        let _item = value._copy(undeleteChildren)
+        let _item = value._copy(undeleteChildren, false)
         _item._parent = copy
-        map.set(key, value._copy(undeleteChildren))
+        _item._parentSub = key
+        map.set(key, _item)
       }
     }
     let prevUndeleted = null
@@ -95,7 +96,7 @@ export default class Type extends Item {
     let item = this._start
     while (item !== null) {
       if (undeleteChildren.has(item) || !item.deleted) {
-        let _item = item._copy(undeleteChildren)
+        let _item = item._copy(undeleteChildren, false)
         _item._left = prevUndeleted
         _item._origin = prevUndeleted
         _item._right = null

src/Type/y-xml/YXmlElement.js

@@ -20,8 +20,8 @@ export default class YXmlElement extends YXmlFragment {
       this._domFilter = arg2
     }
   }
-  _copy (undeleteChildren) {
+  _copy (undeleteChildren, copyPosition) {
-    let struct = super._copy(undeleteChildren)
+    let struct = super._copy(undeleteChildren, copyPosition)
     struct.nodeName = this.nodeName
     return struct
   }

src/Type/y-xml/YXmlFragment.js

@@ -152,6 +152,7 @@ export default class YXmlFragment extends YArray {
         attributes.set(key, attrs[key])
       }
     }
+    this._y.transact(() => {
       let result = this._domFilter(this.nodeName, new Map(attributes))
       if (result === null) {
         this._delete(this._y)
@@ -165,6 +166,7 @@ export default class YXmlFragment extends YArray {
       this.forEach(xml => {
         xml.setDomFilter(f)
       })
+    })
   }
   _callObserver (transaction, parentSubs, remote) {
     this._callEventHandler(transaction, new YXmlEvent(this, parentSubs, remote))

src/Type/y-xml/YXmlHook.js

@@ -14,6 +14,11 @@ export default class YXmlHook extends YMap {
       getHook(hookName).fillType(dom, this)
     }
   }
+  _copy (undeleteChildren, copyPosition) {
+    const struct = super._copy(undeleteChildren, copyPosition)
+    struct.hookName = this.hookName
+    return struct
+  }
   getDom (_document) {
     _document = _document || document
     if (this._dom === null) {

src/Util/UndoManager.js

@@ -50,7 +50,7 @@ function applyReverseOperation (y, scope, reverseBuffer) {
           )
         ) {
           performedUndo = true
-          op = op._copy(undoOp.deletedStructs)
+          op = op._copy(undoOp.deletedStructs, true)
           op._integrate(y)
         }
       }