Panel

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Panel is a widget that simulates the behavior of an OS window.

It is positionable, stackable, and provides support for the standard

module format layout, with a header, body and footer section.

The header and footer sections can support buttons with specific callback

functions. The panel can be modal, and can be auto-focussed or hidden when

certain UI interactions occur.

The panel is built by extending Widget and adding the WidgetPosition,

WidgetStack, WidgetPositionAlign, WidgetPositionConstrain, WidgetStdMod,

WidgetModality, WidgetAutohide, and WidgetButtons extensions.