apps/ai-game-creator-shell/src/features/ui-editor/treeUtils.ts

@@ -14,3 +14,20 @@ export function collectUiNodeIds(root: UiNode): Set<NodeId> {
   visitUiNodes(root, (node) => ids.add(node.id));
   return ids;
 }
+
+export function findUiNode(root: UiNode, nodeId: NodeId): UiNode | null {
+  if (root.id === nodeId) return root;
+  for (const child of root.children) {
+    const found = findUiNode(child, nodeId);
+    if (found) return found;
+  }
+  return null;
+}
+
+export function countUiNodeDescendants(root: UiNode): number {
+  let count = 0;
+  for (const child of root.children) {
+    count += 1 + countUiNodeDescendants(child);
+  }
+  return count;
+}

apps/ai-game-creator-shell/src/view/ui-editor/components/UiNodeDeleteConfirmModal.tsx

@@ -0,0 +1,56 @@
+import { ThemedModal } from '../../../components/modal/ThemedModal';
+import type { NodeId } from '../../../features/ui-editor/types/NodeId';
+
+export type UiNodeDeleteRequest = {
+  nodeId: NodeId;
+  nodeLabel: string;
+  descendantCount: number;
+};
+
+type UiNodeDeleteConfirmModalProps = {
+  request: UiNodeDeleteRequest | null;
+  onCancel: () => void;
+  onConfirm: (nodeId: NodeId) => void;
+  disabled?: boolean;
+};
+
+export function UiNodeDeleteConfirmModal({
+  request,
+  onCancel,
+  onConfirm,
+  disabled = false,
+}: UiNodeDeleteConfirmModalProps) {
+  return (
+    <ThemedModal
+      open={request !== null}
+      onClose={onCancel}
+      ariaLabel="确认删除节点"
+      panelClassName="w-[420px] rounded-2xl p-5"
+    >
+      <h2 className="m-0 text-base font-semibold">确认删除节点？</h2>
+      <p className="text-sm leading-6 text-(--platform-text-soft)">
+        将删除「{request?.nodeLabel ?? ''}」及其 {request?.descendantCount ?? 0}{' '}
+        个后代节点，是否继续？
+      </p>
+      <div className="mt-5 flex justify-end gap-2">
+        <button
+          type="button"
+          className="rounded-lg border border-(--platform-subpanel-border) px-3 py-2 text-xs"
+          onClick={onCancel}
+        >
+          取消
+        </button>
+        <button
+          type="button"
+          className="rounded-lg bg-red-600 px-3 py-2 text-xs font-semibold text-white"
+          disabled={disabled}
+          onClick={() => {
+            if (request) onConfirm(request.nodeId);
+          }}
+        >
+          删除
+        </button>
+      </div>
+    </ThemedModal>
+  );
+}

apps/ai-game-creator-shell/src/view/ui-editor/components/UiTreePanel.tsx

@@ -1,4 +1,4 @@
-import { ChevronDown, Eye, EyeOff } from 'lucide-react';
+import { ChevronDown, Eye, EyeOff, Trash2 } from 'lucide-react';
 import {
   type MouseEvent as ReactMouseEvent,
   useEffect,
@@ -13,12 +13,20 @@ import {
   type TreeApi,
 } from 'react-arborist';
 
+import {
+  countUiNodeDescendants,
+  findUiNode,
+} from '../../../features/ui-editor/treeUtils';
 import type { Node as UiNode } from '../../../features/ui-editor/types/Node';
 import type { NodeId } from '../../../features/ui-editor/types/NodeId';
 import type { UIDesignImageId } from '../../../features/ui-editor/types/UIDesignImageId';
 import type { UiNodeMoveRequest } from '../../../features/ui-editor/types/UiNodeMoveRequest';
 import type { UiEditorNodeFocusRequest } from '../model';
 import { UiNodeContextMenu } from './UiNodeContextMenu';
+import {
+  UiNodeDeleteConfirmModal,
+  type UiNodeDeleteRequest,
+} from './UiNodeDeleteConfirmModal';
 
 type UiTreePanelProps = {
   root: UiNode | null;
@@ -44,11 +52,17 @@ function TreeRow({
   isNodeVisible,
   onToggleNodeVisibility,
   onOpenContextMenu,
+  onRequestDelete,
+  canDelete,
+  deleteDisabled,
 }: NodeRendererProps<UiNode> & {
   onSelectNode: (id: NodeId) => void;
   isNodeVisible: (nodeId: NodeId) => boolean;
   onToggleNodeVisibility: (id: NodeId) => void;
   onOpenContextMenu: (event: ReactMouseEvent, id: NodeId) => void;
+  onRequestDelete: (id: NodeId) => void;
+  canDelete: boolean;
+  deleteDisabled: boolean;
 }) {
   const data = node.data;
   const nodeLabel = data.metadata.name || '未命名节点';
@@ -105,6 +119,21 @@ function TreeRow({
       >
         {isVisible ? <Eye size={13} /> : <EyeOff size={13} />}
       </button>
+      <button
+        type="button"
+        aria-label={`删除节点“${nodeLabel}”`}
+        title={canDelete ? `删除节点“${nodeLabel}”` : '页面根节点不可删除'}
+        disabled={!canDelete || deleteDisabled}
+        aria-disabled={!canDelete || deleteDisabled}
+        className="grid size-6 shrink-0 place-items-center rounded text-red-700 hover:bg-red-50 disabled:cursor-not-allowed disabled:opacity-35"
+        onClick={(event) => {
+          event.stopPropagation();
+          onRequestDelete(data.id);
+        }}
+        onPointerDown={(event) => event.stopPropagation()}
+      >
+        <Trash2 size={13} />
+      </button>
     </div>
   );
 }
@@ -132,6 +161,9 @@ export function UiTreePanel({
     x: number;
     y: number;
   } | null>(null);
+  const [pendingDelete, setPendingDelete] = useState<
+    (UiNodeDeleteRequest & { treeId: UIDesignImageId }) | null
+  >(null);
 
   useEffect(() => {
     if (!focusRequest) return;
@@ -184,6 +216,35 @@ export function UiTreePanel({
   const pageRootIds = new Set(root?.children.map((child) => child.id) ?? []);
   const contextTreeId = contextMenu ? treeIdForNode(contextMenu.nodeId) : null;
 
+  const requestDelete = (nodeId: NodeId) => {
+    if (!root || isLocked || nodeId === root.id || pageRootIds.has(nodeId)) {
+      return;
+    }
+    const treeId = treeIdForNode(nodeId);
+    const node = findUiNode(root, nodeId);
+    if (!treeId || !node) return;
+    const descendantCount = countUiNodeDescendants(node);
+    if (descendantCount === 0) {
+      onDeleteNode(treeId, nodeId);
+      return;
+    }
+    setPendingDelete({
+      treeId,
+      nodeId,
+      nodeLabel: node.metadata.name || '未命名节点',
+      descendantCount,
+    });
+  };
+
+  const confirmDelete = (nodeId: NodeId) => {
+    if (!pendingDelete || isLocked || pendingDelete.nodeId !== nodeId) {
+      return;
+    }
+    const { treeId } = pendingDelete;
+    setPendingDelete(null);
+    onDeleteNode(treeId, nodeId);
+  };
+
   return (
     <div
       className={`relative flex h-full min-h-0 flex-col ${className ?? ''}`}
@@ -224,6 +285,12 @@ export function UiTreePanel({
                   }}
                   isNodeVisible={isNodePreviewVisible}
                   onToggleNodeVisibility={onToggleNodeVisibility}
+                  onRequestDelete={requestDelete}
+                  canDelete={
+                    props.node.data.id !== root.id &&
+                    !pageRootIds.has(props.node.data.id)
+                  }
+                  deleteDisabled={isLocked}
                   onOpenContextMenu={(event, nodeId) =>
                     nodeId === root.id
                       ? undefined
@@ -252,9 +319,15 @@ export function UiTreePanel({
           onClose={() => setContextMenu(null)}
           onInsertChild={(nodeId) => onInsertNode(contextTreeId, nodeId)}
           onInsertSibling={(nodeId) => onInsertNodeAfter(contextTreeId, nodeId)}
-          onDelete={(nodeId) => onDeleteNode(contextTreeId, nodeId)}
+          onDelete={requestDelete}
         />
       ) : null}
+      <UiNodeDeleteConfirmModal
+        request={pendingDelete}
+        onCancel={() => setPendingDelete(null)}
+        onConfirm={confirmDelete}
+        disabled={isLocked}
+      />
     </div>
   );
 }