| // Copyright (C) 2026 The Android Open Source Project |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| import type {QueryNode} from './query_node'; |
| import {getAllNodes} from './query_builder/graph_utils'; |
| |
| /** |
| * Gets the primary selected node for showing details. |
| * When only one node is selected, returns that node. |
| * When multiple nodes are selected, returns the first one (by insertion order). |
| * Returns undefined if no nodes are selected. |
| */ |
| export function getPrimarySelectedNode( |
| selectedNodeIds: ReadonlySet<string>, |
| rootNodes: QueryNode[], |
| ): QueryNode | undefined { |
| if (selectedNodeIds.size === 0) return undefined; |
| |
| // Get first selected node (Set maintains insertion order in JS) |
| const firstId = selectedNodeIds.values().next().value; |
| const allNodes = getAllNodes(rootNodes); |
| return allNodes.find((n) => n.nodeId === firstId); |
| } |
