Closes #9

core/tree_node.cpp

@@ -24,8 +24,11 @@ TreeNode::TreeNode(const SignalInfo &signal)
 }
 
 void TreeNode::AddChild(std::unique_ptr<TreeNode> child) {
-    if (child)
+    if (child) {
         m_children.push_back(std::move(child));
+        m_children.back()->m_parent = this;
+        m_children.back()->m_row = m_children.size() - 1U;
+    }
 }
 
 std::size_t TreeNode::GetChildCount() const {
@@ -61,3 +64,11 @@ const FrameInfo *TreeNode::GetFrame() const {
 const SignalInfo *TreeNode::GetSignal() const {
     return m_signal.get();
 }
+
+const TreeNode *TreeNode::GetParent() const {
+    return m_parent;
+}
+
+std::size_t TreeNode::GetRow() const {
+    return m_row;
+}

core/tree_node.h

@@ -56,8 +56,8 @@ public:
     TreeNode(const TreeNode &) = delete;
     TreeNode &operator=(const TreeNode &) = delete;
 
-    TreeNode(TreeNode &&) = default;
-    TreeNode &operator=(TreeNode &&) = default;
+    TreeNode(TreeNode &&) = delete;
+    TreeNode &operator=(TreeNode &&) = delete;
 
     /**
      * @brief Add child node.
@@ -65,6 +65,12 @@ public:
      */
     void AddChild(std::unique_ptr<TreeNode> child);
 
+    /** Non-owning parent; nullptr for a detached node or the root. */
+    const TreeNode *GetParent() const;
+
+    /** Zero-based sibling position; zero for a detached node or the root. */
+    std::size_t GetRow() const;
+
     /**
      * @brief Get child count.
      * @return Number of children.
@@ -110,6 +116,8 @@ public:
     const SignalInfo *GetSignal() const;
 
 private:
+    TreeNode *m_parent = nullptr;
+    std::size_t m_row = 0U;
     NodeType m_type;
     std::string m_name;
     std::vector<std::unique_ptr<TreeNode>> m_children;