I'll add functionality to delete elements in the flow chart. This will involve adding a delete button to each node and implementing the logic to remove nodes and their associated edges.

Here's the updated React component with the delete functionality added:

Here's what has been added or changed:

1. We've updated the CustomNode component to include a delete button. This button uses the X icon from lucide-react and is positioned in the top-right corner of each node.
2. A new deleteNode function has been added. This function removes the specified node and any edges connected to it.
3. The parseDocument function now includes the deleteNode function in each node's data, allowing it to be called when the delete button is clicked.
4. The delete button has been styled to be subtle (ghost variant) but turns red on hover for better visibility.
5. We've added an aria-label to the delete button for improved accessibility.

These changes allow users to delete individual nodes from the flow chart by clicking the 'X' button on each node. When a node is deleted, any edges connected to it are also removed, maintaining the integrity of the flow chart.

Is there anything else you'd like to add or modify in the flow chart functionality?

I'll add the ability to drag and drop arrows to connect the flow chart elements. This functionality is already partially supported by react-flow, but we'll enhance it to make it more user-friendly and visible.

Here's the updated React component with the drag and drop functionality added:

Here's what has been added or changed:

1. We've updated the CustomNode component to include Handle components from react-flow. These handles act as connection points for the edges:

   • A target handle is added at the top of each node.
   • A source handle is added at the bottom of each node.
   • The handles are styled to be more visible with a blue background and increased size.
2. In the ReactFlow component, we've added the connectionMode={ConnectionMode.Loose} prop. This allows for more flexible connections between nodes.
3. The existing onConnect function remains unchanged, as it already handles the creation of new edges when connections are made.

These changes allow users to:

• Drag from the bottom handle of one node to the top handle of another node to create a new connection.
• Create connections in any direction (not just top to bottom).
• Visually see where connections can be made or received on each node.

The drag and drop functionality for connecting nodes is now more intuitive and visible. Users can create new connections by clicking and dragging from one node's handle to another's.

Is there anything else you'd like to add or modify in the flow chart functionality?