Method Close

core/tree.go:1096–1105

Close closes the given node and updates the tree accordingly (if it is not already closed). It calls OnClose in the [Treer] interface for extensible actions.

()

// (if it is not already closed). It calls OnClose in the [Treer]
// interface for extensible actions.
func (tr *Tree) Close() {
	if tr.Closed {
		return
	}
	tr.SetClosed(true)
	tr.setBranchState()
	tr.This.(Treer).OnClose()
	tr.setChildrenVisibility(true) // parent closed
	tr.NeedsLayout()
}

// OnOpen is called when a node is opened.
// The base version does nothing.