(Redirected from Listener nodes)
The IExecutionChangeListener<T> type is an interface type applied to ProtoFlux nodes. This interface marks the node as a listener node.
Listener nodes listen for changes on their input and evaluate themselves whenever they are notified of a potential change by the input chain. Changes are triggered by the data model and can come from a variety of sources:
- Source or ChangeableSource nodes.
- These get events from the data model directly whenever the sourced element detects a change.
- Input nodes.
- Data Model Store nodes.
However, if any node in the input node graph has the ContinuouslyChanging attribute, the listener node will forcibly evaluate every engine update instead.