v13.0.0-50 -- distribution files

README.md

@@ -64,19 +64,6 @@ missing modules.
 <script src="./bower_components/yjs/y.js"></script>
 ```
 
-### CDN
-```
-<script src="https://cdn.jsdelivr.net/npm/yjs@12/src/y.js"></script>
-<script src="https://cdn.jsdelivr.net/npm/y-array@10/dist/y-array.js"></script>
-<script src="https://cdn.jsdelivr.net/npm/y-websockets-client@8/dist/y-websockets-client.js"></script>
-<script src="https://cdn.jsdelivr.net/npm/y-memory@8/dist/y-memory.js"></script>
-<script src="https://cdn.jsdelivr.net/npm/y-array@10/dist/y-array.js"></script>
-<script src="https://cdn.jsdelivr.net/npm/y-map@10/dist/y-map.js"></script>
-<script src="https://cdn.jsdelivr.net/npm/y-text@9/dist/y-text.js"></script>
-// ..
-// do the same for all modules you want to use
-```
-
 ### Npm
 ```
 npm install --save yjs % add all y-* modules you want to use

examples/html-editor/index.js

@@ -18,7 +18,7 @@ window.undoManager = new Y.utils.UndoManager(window.yXmlType, {
 })
 
 document.onkeydown = function interceptUndoRedo (e) {
-  if (e.keyCode === 90 && (e.metaKey || e.ctrlKey)) {
+  if (e.keyCode === 90 && e.metaKey) {
     if (!e.shiftKey) {
       window.undoManager.undo()
     } else {

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "yjs",
-  "version": "13.0.0-52",
+  "version": "13.0.0-50",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {

package.json

@@ -1,6 +1,6 @@
 {
   "name": "yjs",
-  "version": "13.0.0-52",
+  "version": "13.0.0-50",
   "description": "A framework for real-time p2p shared editing on any data",
   "main": "./y.node.js",
   "browser": "./y.js",

src/Struct/Item.js

@@ -51,56 +51,22 @@ export default class Item {
     this._parent = null
     this._parentSub = null
     this._deleted = false
-    this._redone = null
   }
   /**
-   * Create a operation with the same effect (without position effect)
+   * Copy the effect of struct
    */
-  _copy () {
-    return new this.constructor()
-  }
-  /**
-   * Redo the effect of this operation.
-   */
-  _redo (y) {
-    if (this._redone !== null) {
-      return this._redone
+  _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
     }
-    let struct = this._copy()
-    let left = this._left
-    let right = this
-    let parent = this._parent
-    // make sure that parent is redone
-    if (parent._deleted === true && parent._redone === null) {
-      parent._redo(y)
-    }
-    if (parent._redone !== null) {
-      parent = parent._redone
-      // find next cloned items
-      while (left !== null && left._redone === null) {
-        left = left._left
-      }
-      if (left !== null) {
-        left = left._redone
-      }
-      while (right !== null && right._redone === null) {
-        right = right._right
-      }
-      if (right !== null) {
-        right = right._redone
-      }
-    }
-    struct._origin = left
-    struct._left = left
-    struct._right = right
-    struct._right_origin = right
-    struct._parent = parent
-    struct._parentSub = this._parentSub
-    struct._integrate(y)
-    this._redone = struct
     return struct
   }
-
   get _lastId () {
     return new ID(this._id.user, this._id.clock + this._length - 1)
   }
@@ -126,15 +92,11 @@ export default class Item {
     if (!this._deleted) {
       this._deleted = true
       y.ds.markDeleted(this._id, this._length)
-      let del = new Delete()
-      del._targetID = this._id
-      del._length = this._length
       if (createDelete) {
-        // broadcast and persists Delete
+        let del = new Delete()
+        del._targetID = this._id
+        del._length = this._length
         del._integrate(y, true)
-      } else if (y.persistence !== null) {
-        // only persist Delete
-        y.persistence.saveStruct(y, del)
       }
       transactionTypeChanged(y, this._parent, this._parentSub)
       y._transaction.deletedStructs.add(this)

src/Struct/ItemJSON.js

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

src/Struct/Type.js

@@ -79,6 +79,40 @@ export default class Type extends Item {
       type = type._parent
     }
   }
+  _copy (undeleteChildren, copyPosition) {
+    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, false)
+        _item._parent = copy
+        _item._parentSub = key
+        map.set(key, _item)
+      }
+    }
+    let prevUndeleted = null
+    copy._start = null
+    let item = this._start
+    while (item !== null) {
+      if (undeleteChildren.has(item) || !item.deleted) {
+        let _item = item._copy(undeleteChildren, false)
+        _item._left = prevUndeleted
+        _item._origin = prevUndeleted
+        _item._right = null
+        _item._right_origin = null
+        _item._parent = copy
+        if (prevUndeleted === null) {
+          copy._start = _item
+        } else {
+          prevUndeleted._right = _item
+        }
+        prevUndeleted = _item
+      }
+      item = item._right
+    }
+    return copy
+  }
   _transact (f) {
     const y = this._y
     if (y !== null) {

src/Type/y-xml/YXmlElement.js

@@ -20,8 +20,8 @@ export default class YXmlElement extends YXmlFragment {
       this._domFilter = arg2
     }
   }
-  _copy () {
-    let struct = super._copy()
+  _copy (undeleteChildren, copyPosition) {
+    let struct = super._copy(undeleteChildren, copyPosition)
     struct.nodeName = this.nodeName
     return struct
   }
@@ -36,8 +36,7 @@ export default class YXmlElement extends YXmlFragment {
       let attributes = new Map()
       for (let i = 0; i < dom.attributes.length; i++) {
         let attr = dom.attributes[i]
-        // get attribute via getAttribute for custom element support (some write something different in attr.value)
-        attributes.set(attr.name, dom.getAttribute(attr.name))
+        attributes.set(attr.name, attr.value)
       }
       attributes = this._domFilter(dom, attributes)
       attributes.forEach((value, name) => {

src/Type/y-xml/YXmlHook.js

@@ -14,8 +14,8 @@ export default class YXmlHook extends YMap {
       getHook(hookName).fillType(dom, this)
     }
   }
-  _copy () {
-    const struct = super._copy()
+  _copy (undeleteChildren, copyPosition) {
+    const struct = super._copy(undeleteChildren, copyPosition)
     struct.hookName = this.hookName
     return struct
   }

src/Util/UndoManager.js

@@ -4,12 +4,11 @@ class ReverseOperation {
   constructor (y, transaction) {
     this.created = new Date()
     const beforeState = transaction.beforeState
+    this.toState = new ID(y.userID, y.ss.getState(y.userID) - 1)
     if (beforeState.has(y.userID)) {
-      this.toState = new ID(y.userID, y.ss.getState(y.userID) - 1)
       this.fromState = new ID(y.userID, beforeState.get(y.userID))
     } else {
-      this.toState = null
-      this.fromState = null
+      this.fromState = this.toState
     }
     this.deletedStructs = transaction.deletedStructs
   }
@@ -31,32 +30,28 @@ function applyReverseOperation (y, scope, reverseBuffer) {
     while (!performedUndo && reverseBuffer.length > 0) {
       let undoOp = reverseBuffer.pop()
       // make sure that it is possible to iterate {from}-{to}
-      if (undoOp.fromState !== null) {
-        y.os.getItemCleanStart(undoOp.fromState)
-        y.os.getItemCleanEnd(undoOp.toState)
-        y.os.iterate(undoOp.fromState, undoOp.toState, op => {
-          while (op._deleted && op._redone !== null) {
-            op = op._redone
-          }
-          if (op._deleted === false && isStructInScope(y, op, scope)) {
-            performedUndo = true
-            op._delete(y)
-          }
-        })
-      }
+      y.os.getItemCleanStart(undoOp.fromState)
+      y.os.getItemCleanEnd(undoOp.toState)
+      y.os.iterate(undoOp.fromState, undoOp.toState, op => {
+        if (!op._deleted && isStructInScope(y, op, scope)) {
+          performedUndo = true
+          op._delete(y)
+        }
+      })
       for (let op of undoOp.deletedStructs) {
         if (
           isStructInScope(y, op, scope) &&
           op._parent !== y &&
+          !op._parent._deleted &&
           (
-            op._id.user !== y.userID ||
-            undoOp.fromState === null ||
-            op._id.clock < undoOp.fromState.clock ||
-            op._id.clock > undoOp.toState.clock
+            op._parent._id.user !== y.userID ||
+            op._parent._id.clock < undoOp.fromState.clock ||
+            op._parent._id.clock > undoOp.fromState.clock
           )
         ) {
           performedUndo = true
-          op._redo(y)
+          op = op._copy(undoOp.deletedStructs, true)
+          op._integrate(y)
         }
       }
     }
@@ -82,12 +77,7 @@ export default class UndoManager {
           let lastUndoOp = this._undoBuffer.length > 0 ? this._undoBuffer[this._undoBuffer.length - 1] : null
           if (lastUndoOp !== null && reverseOperation.created - lastUndoOp.created <= options.captureTimeout) {
             lastUndoOp.created = reverseOperation.created
-            if (reverseOperation.toState !== null) {
-              lastUndoOp.toState = reverseOperation.toState
-              if (lastUndoOp.fromState === null) {
-                lastUndoOp.fromState = reverseOperation.fromState
-              }
-            }
+            lastUndoOp.toState = reverseOperation.toState
             reverseOperation.deletedStructs.forEach(lastUndoOp.deletedStructs.add, lastUndoOp.deletedStructs)
           } else {
             this._undoBuffer.push(reverseOperation)

y.node.js

@@ -1,7 +1,7 @@
 
 /**
  * yjs - A framework for real-time p2p shared editing on any data
- * @version v13.0.0-52
+ * @version v13.0.0-50
  * @license MIT
  */
 
@@ -1340,56 +1340,22 @@ class Item {
     this._parent = null;
     this._parentSub = null;
     this._deleted = false;
-    this._redone = null;
   }
   /**
-   * Create a operation with the same effect (without position effect)
+   * Copy the effect of struct
    */
-  _copy () {
-    return new this.constructor()
-  }
-  /**
-   * Redo the effect of this operation.
-   */
-  _redo (y) {
-    if (this._redone !== null) {
-      return this._redone
+  _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;
     }
-    let struct = this._copy();
-    let left = this._left;
-    let right = this;
-    let parent = this._parent;
-    // make sure that parent is redone
-    if (parent._deleted === true && parent._redone === null) {
-      parent._redo(y);
-    }
-    if (parent._redone !== null) {
-      parent = parent._redone;
-      // find next cloned items
-      while (left !== null && left._redone === null) {
-        left = left._left;
-      }
-      if (left !== null) {
-        left = left._redone;
-      }
-      while (right !== null && right._redone === null) {
-        right = right._right;
-      }
-      if (right !== null) {
-        right = right._redone;
-      }
-    }
-    struct._origin = left;
-    struct._left = left;
-    struct._right = right;
-    struct._right_origin = right;
-    struct._parent = parent;
-    struct._parentSub = this._parentSub;
-    struct._integrate(y);
-    this._redone = struct;
     return struct
   }
-
   get _lastId () {
     return new ID(this._id.user, this._id.clock + this._length - 1)
   }
@@ -1415,15 +1381,11 @@ class Item {
     if (!this._deleted) {
       this._deleted = true;
       y.ds.markDeleted(this._id, this._length);
-      let del = new Delete();
-      del._targetID = this._id;
-      del._length = this._length;
       if (createDelete) {
-        // broadcast and persists Delete
+        let del = new Delete();
+        del._targetID = this._id;
+        del._length = this._length;
         del._integrate(y, true);
-      } else if (y.persistence !== null) {
-        // only persist Delete
-        y.persistence.saveStruct(y, del);
       }
       transactionTypeChanged(y, this._parent, this._parentSub);
       y._transaction.deletedStructs.add(this);
@@ -1758,6 +1720,40 @@ class Type extends Item {
       type = type._parent;
     }
   }
+  _copy (undeleteChildren, copyPosition) {
+    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, false);
+        _item._parent = copy;
+        _item._parentSub = key;
+        map.set(key, _item);
+      }
+    }
+    let prevUndeleted = null;
+    copy._start = null;
+    let item = this._start;
+    while (item !== null) {
+      if (undeleteChildren.has(item) || !item.deleted) {
+        let _item = item._copy(undeleteChildren, false);
+        _item._left = prevUndeleted;
+        _item._origin = prevUndeleted;
+        _item._right = null;
+        _item._right_origin = null;
+        _item._parent = copy;
+        if (prevUndeleted === null) {
+          copy._start = _item;
+        } else {
+          prevUndeleted._right = _item;
+        }
+        prevUndeleted = _item;
+      }
+      item = item._right;
+    }
+    return copy
+  }
   _transact (f) {
     const y = this._y;
     if (y !== null) {
@@ -1821,8 +1817,8 @@ class ItemJSON extends Item {
     super();
     this._content = null;
   }
-  _copy () {
-    let struct = super._copy();
+  _copy (undeleteChildren, copyPosition) {
+    let struct = super._copy(undeleteChildren, copyPosition);
     struct._content = this._content;
     return struct
   }
@@ -1883,8 +1879,8 @@ class ItemString extends Item {
     super();
     this._content = null;
   }
-  _copy () {
-    let struct = super._copy();
+  _copy (undeleteChildren, copyPosition) {
+    let struct = super._copy(undeleteChildren, copyPosition);
     struct._content = this._content;
     return struct
   }
@@ -3137,8 +3133,8 @@ class YXmlElement extends YXmlFragment {
       this._domFilter = arg2;
     }
   }
-  _copy () {
-    let struct = super._copy();
+  _copy (undeleteChildren, copyPosition) {
+    let struct = super._copy(undeleteChildren, copyPosition);
     struct.nodeName = this.nodeName;
     return struct
   }
@@ -3153,8 +3149,7 @@ class YXmlElement extends YXmlFragment {
       let attributes = new Map();
       for (let i = 0; i < dom.attributes.length; i++) {
         let attr = dom.attributes[i];
-        // get attribute via getAttribute for custom element support (some write something different in attr.value)
-        attributes.set(attr.name, dom.getAttribute(attr.name));
+        attributes.set(attr.name, attr.value);
       }
       attributes = this._domFilter(dom, attributes);
       attributes.forEach((value, name) => {
@@ -3277,8 +3272,8 @@ class YXmlHook extends YMap {
       getHook(hookName).fillType(dom, this);
     }
   }
-  _copy () {
-    const struct = super._copy();
+  _copy (undeleteChildren, copyPosition) {
+    const struct = super._copy(undeleteChildren, copyPosition);
     struct.hookName = this.hookName;
     return struct
   }
@@ -3676,12 +3671,11 @@ class ReverseOperation {
   constructor (y, transaction) {
     this.created = new Date();
     const beforeState = transaction.beforeState;
+    this.toState = new ID(y.userID, y.ss.getState(y.userID) - 1);
     if (beforeState.has(y.userID)) {
-      this.toState = new ID(y.userID, y.ss.getState(y.userID) - 1);
       this.fromState = new ID(y.userID, beforeState.get(y.userID));
     } else {
-      this.toState = null;
-      this.fromState = null;
+      this.fromState = this.toState;
     }
     this.deletedStructs = transaction.deletedStructs;
   }
@@ -3703,32 +3697,28 @@ function applyReverseOperation (y, scope, reverseBuffer) {
     while (!performedUndo && reverseBuffer.length > 0) {
       let undoOp = reverseBuffer.pop();
       // make sure that it is possible to iterate {from}-{to}
-      if (undoOp.fromState !== null) {
-        y.os.getItemCleanStart(undoOp.fromState);
-        y.os.getItemCleanEnd(undoOp.toState);
-        y.os.iterate(undoOp.fromState, undoOp.toState, op => {
-          while (op._deleted && op._redone !== null) {
-            op = op._redone;
-          }
-          if (op._deleted === false && isStructInScope(y, op, scope)) {
-            performedUndo = true;
-            op._delete(y);
-          }
-        });
-      }
+      y.os.getItemCleanStart(undoOp.fromState);
+      y.os.getItemCleanEnd(undoOp.toState);
+      y.os.iterate(undoOp.fromState, undoOp.toState, op => {
+        if (!op._deleted && isStructInScope(y, op, scope)) {
+          performedUndo = true;
+          op._delete(y);
+        }
+      });
       for (let op of undoOp.deletedStructs) {
         if (
           isStructInScope(y, op, scope) &&
           op._parent !== y &&
+          !op._parent._deleted &&
           (
-            op._id.user !== y.userID ||
-            undoOp.fromState === null ||
-            op._id.clock < undoOp.fromState.clock ||
-            op._id.clock > undoOp.toState.clock
+            op._parent._id.user !== y.userID ||
+            op._parent._id.clock < undoOp.fromState.clock ||
+            op._parent._id.clock > undoOp.fromState.clock
           )
         ) {
           performedUndo = true;
-          op._redo(y);
+          op = op._copy(undoOp.deletedStructs, true);
+          op._integrate(y);
         }
       }
     }
@@ -3754,12 +3744,7 @@ class UndoManager {
           let lastUndoOp = this._undoBuffer.length > 0 ? this._undoBuffer[this._undoBuffer.length - 1] : null;
           if (lastUndoOp !== null && reverseOperation.created - lastUndoOp.created <= options.captureTimeout) {
             lastUndoOp.created = reverseOperation.created;
-            if (reverseOperation.toState !== null) {
-              lastUndoOp.toState = reverseOperation.toState;
-              if (lastUndoOp.fromState === null) {
-                lastUndoOp.fromState = reverseOperation.fromState;
-              }
-            }
+            lastUndoOp.toState = reverseOperation.toState;
             reverseOperation.deletedStructs.forEach(lastUndoOp.deletedStructs.add, lastUndoOp.deletedStructs);
           } else {
             this._undoBuffer.push(reverseOperation);