The render window manager basically displays the nodes of the data storage and allows to assign them to specific render windows.
Currently a //layer stack// is used to display the nodes that are valid for a selected render window.
However, we can use the new concept of a data storage inspector to display all nodes of the data storage with the ability to show / hide them in specific render windows. Using the provided interfaces it will be easier to implement node selection events, list view / model, drag and drop and will allow to remove unnecessary buttons.
The node predicate can be used to filter the nodes according to the selected render window.