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ui.Panel

A widget that can hold other widgets. Use panels to construct complex combinations of nested widgets.

Panels can be added to ui.root but not printed to the console with print().

Usage	Returns
`ui.Panel( widgets , layout , style )`	ui.Panel

Argument	Type	Details
`widgets`	List<ui.Widget>\|ui.Widget, optional	The list of widgets or a single widget to add to the panel. Defaults to an empty array.
`layout`	String\|ui.Panel.Layout, optional	The layout to use for this panel. If a string is passed in, it's taken as a shortcut to the layout constructor with that name. Defaults to 'flow'.
`style`	Object, optional	An object of allowed CSS styles with their values to be set for this widget. See style() documentation.

Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License , and code samples are licensed under the Apache 2.0 License . For details, see the Google Developers Site Policies . Java is a registered trademark of Oracle and/or its affiliates.

Last updated 2025-07-08 UTC.

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ui.Panel