BUGFIX: Insert copied or moved nodes in order of selection

Classes/Domain/Model/Changes/CopyInto.php

@@ -73,8 +73,16 @@ public function getMode()
     public function apply()
     {
         if ($this->canApply()) {
-            $nodeName = $this->generateUniqueNodeName($this->getParentNode());
-            $node = $this->getSubject()->copyInto($this->getParentNode(), $nodeName);
+            $parentNode = $this->getParentNode();
+            $nodeName = $this->generateUniqueNodeName($parentNode);
+            // If the parent node has children, we copy the node after the last child node to prevent the copied nodes
+            // from being mixed with the existing ones due the duplication of their relative indices.
+            if ($parentNode->hasChildNodes()) {
+                $lastChildNode = array_slice($parentNode->getChildNodes(), -1, 1)[0];
+                $node = $this->getSubject()->copyAfter($lastChildNode, $nodeName);
+            } else {
+                $node = $this->getSubject()->copyInto($parentNode, $nodeName);
+            }
             $this->finish($node);
         }
     }

packages/neos-ui-redux-store/src/CR/Nodes/helpers.ts

@@ -67,11 +67,18 @@ export const calculateNewFocusedNodes = (selectionMode: SelectionModeTypes, cont
         const lastSelectedNode = nodesByContextPath[lastSelectedNodeContextPath];
         if (lastSelectedNode && lastSelectedNode.parent) {
             const parentNode = getNodeOrThrow(nodesByContextPath, lastSelectedNode.parent);
-            const tempSelection: string[] = [];
+            let tempSelection: string[] = [];
             let startSelectionFlag = false;
+            let startIndex = -1;
+            let endIndex = -1;
             // if both start and end nodes are within children, then we can do range select
-            const startAndEndOfSelectionAreOnOneLevel = parentNode.children.some(child => {
+            const startAndEndOfSelectionAreOnOneLevel = parentNode.children.some((child, index) => {
                 if (child.contextPath === lastSelectedNodeContextPath || child.contextPath === contextPath) {
+                    if (child.contextPath === lastSelectedNodeContextPath) {
+                        startIndex = index;
+                    } else if (child.contextPath === contextPath) {
+                        endIndex = index;
+                    }
                     if (startSelectionFlag) { // if matches for the second time it means that both start and end of selection were found
                         tempSelection.push(child.contextPath); // also push the last node
                         return true;
@@ -84,6 +91,10 @@ export const calculateNewFocusedNodes = (selectionMode: SelectionModeTypes, cont
                 return false;
             });
             if (startAndEndOfSelectionAreOnOneLevel) {
+                // Reverse the selection if the nodes were selected from "bottom" to "top" in the tree, or they would be out of order on insertion
+                if (startIndex > endIndex) {
+                    tempSelection = tempSelection.reverse();
+                }
                 const focusedNodesContextPathsSet = new Set(focusedNodesContextPaths);
                 tempSelection.forEach(contextPath => focusedNodesContextPathsSet.add(contextPath));
                 return [...focusedNodesContextPathsSet] as string[];

packages/neos-ui-sagas/src/CR/NodeOperations/pasteNode.js

@@ -39,16 +39,25 @@ export default function * pasteNode({globalRegistry}) {
             const referenceNodeSelector = selectors.CR.Nodes.makeGetNodeByContextPathSelector(reference);
             const referenceNode = yield select(referenceNodeSelector);
             const baseNodeType = yield select($get('ui.pageTree.filterNodeType'));
+            const changeType = calculateChangeTypeFromMode(mode, clipboardMode);
+            const domAddresses = calculateDomAddressesFromMode(mode, referenceNode, fusionPath);
 
             yield put(actions.CR.Nodes.commitPaste(clipboardMode));
-            const changes = subject.map(contextPath => ({
-                type: calculateChangeTypeFromMode(mode, clipboardMode),
+            let changes = subject.map(contextPath => ({
+                type: changeType,
                 subject: contextPath,
                 payload: {
-                    ...calculateDomAddressesFromMode(mode, referenceNode, fusionPath),
+                    ...domAddresses,
                     baseNodeType
                 }
             }));
+
+            // Reverse the order of nodes if we are pasting after the reference node as the insertions are all
+            // applied to the same reference node and would otherwise be applied in reverse order.
+            if (mode === 'after') {
+                changes = changes.reverse();
+            }
+
             yield put(actions.Changes.persistChanges(changes));
         }
     });

packages/neos-ui/src/Containers/LeftSideBar/NodeTree/index.js

@@ -95,8 +95,14 @@ export default class NodeTree extends PureComponent {
     }
 
     handleDrop = (targetNode, position) => {
-        const {currentlyDraggedNodes} = this.state;
+        let {currentlyDraggedNodes} = this.state;
         const {moveNodes, focus} = this.props;
+
+        if (position === 'after') {
+            // Reverse the order of nodes to keep the correct order after each node is inserted after the target node individually
+            currentlyDraggedNodes = Array.from(currentlyDraggedNodes).reverse();
+        }
+
         moveNodes(currentlyDraggedNodes, $get('contextPath', targetNode), position);
         // We need to refocus the tree, so all focus would be reset, because its context paths have changed while moving
         // Could be removed with the new CR