A panel data containing a stack of TaskPanels. The last (top) one should be presented to the user, while the rest is hidden under the top TaskPanel.
This panel data can have an optional TaskProcessPanel to be shown alongside the TaskPanels.
list of TaskPanels in the stack.
An optional TaskProcessPanel panel to be shown alongside stackedPanels.
Returns whether the stack contains any Panel of type P that has not been dismissed yet.
Dismisses all panels in the stack.
Gets the top-most panel of the stack.