added nodes.

nodes/services/ntxclipboard.cpp

@@ -0,0 +1,83 @@
+#include "ntxclipboard.h"
+
+namespace ntx
+{
+  void NtxClipboard::copyNodes(const NtxNodeList& nodes)
+  {
+    m_nodeEntryList.clear();
+
+    for (const auto& node : nodes)
+    {
+      if (!node) continue;
+
+      NtxNodeEntry entry;
+      entry.clone = createOrphanClone(node);
+      entry.originalParent = node->getParent();
+      entry.originalPosition = node->ownPos().value_or(0);
+
+      m_nodeEntryList.push_back(entry);
+    }
+  }
+
+  void NtxClipboard::cutNodes(const NtxNodeList& nodes)
+  {
+    // Identisch zu copyNodes - Der Unterschied liegt in NtxHeadNode
+    copyNodes(nodes);
+  }
+
+  NtxNodeList NtxClipboard::pasteNodes() const
+  {
+    NtxNodeList result;
+
+    for (const auto& entry : m_nodeEntryList)
+    {
+      if (!entry.clone) continue;
+
+      // Neuen Klon vom Clipboard-Clone erstellen (mehrfaches Paste möglich)
+      auto freshClone = entry.clone->clone();
+      if (freshClone)
+      {
+        result.push_back(freshClone);
+      }
+    }
+
+    return result;
+  }
+
+  bool NtxClipboard::isEmpty() const
+  {
+    return m_nodeEntryList.empty();
+  }
+
+  size_t NtxClipboard::getCount() const
+  {
+    return m_nodeEntryList.size();
+  }
+
+  void NtxClipboard::clear()
+  {
+    m_nodeEntryList.clear();
+  }
+
+  const NtxNodeEntryList& NtxClipboard::getEntries() const
+  {
+    return m_nodeEntryList;
+  }
+
+  NtxNodePtr NtxClipboard::createOrphanClone(NtxNodePtr node) const
+  {
+    if (!node) return nullptr;
+
+    // Deep-Clone erstellen
+    auto clone = node->clone();
+
+    // Parent-Verbindung trennen (Elternlos machen)
+    if (clone)
+    {
+      clone->setParent(nullptr);
+    }
+
+    return clone;
+  }
+
+} // namespace ntx