The PopulateNodeMenu method is a static method of the GraphView class within the Editor.NodeEditor namespace. This method is used to populate a given menu with node types that can be added to a node editor graph. It allows for filtering of nodes based on a query and executes a specified action when a node type is selected from the menu.
To use the PopulateNodeMenu method, you need to provide the following parameters:
menu: An instance of Editor.Menu where the node types will be added as menu items.nodes: An IEnumerable<INodeType> collection representing the available node types to be added to the menu.query: An optional NodeQuery that can be used to filter the node types based on specific criteria.selectedAction: An Action<INodeType> delegate that defines the action to be executed when a node type is selected from the menu.// Example usage of PopulateNodeMenu
Editor.Menu menu = new Editor.Menu();
IEnumerable<Editor.NodeEditor.INodeType> nodeTypes = GetAvailableNodeTypes();
Editor.NodeEditor.NodeQuery? query = GetNodeQuery();
Editor.NodeEditor.GraphView.PopulateNodeMenu(
menu,
nodeTypes,
query,
nodeType => {
// Action to perform when a node type is selected
AddNodeToGraph(nodeType);
}
);
// Function to retrieve available node types
IEnumerable<Editor.NodeEditor.INodeType> GetAvailableNodeTypes()
{
// Implementation to return node types
}
// Function to retrieve a node query
Editor.NodeEditor.NodeQuery? GetNodeQuery()
{
// Implementation to return a node query
}
// Function to add a node to the graph
void AddNodeToGraph(Editor.NodeEditor.INodeType nodeType)
{
// Implementation to add the node
}