is there an open source PySide project with a UI layout framework similar to Cytoscape?

[markleo]

Excuse me, is there an open source PySide project with a UI layout framework similar to Cytoscape?
This UI layout has the following characteristics:

• The pane can float.
• The pane can be pulled (enlarged/reduced).
• The pane can be maximized/minimized.

Dock state.jpg

[jeremy_k]

The text description sounds like a QMdiArea