Disclosure widget

Disclosure widget ("Browse for...") in the GTK+ file dialog.

A disclosure widget, expander, or disclosure triangle is a graphical control element that is used to show or hide a collection of "child" widgets in a specific area of the interface. The widget hides non-essential settings or information and thus makes the dialog less cluttered.

The disclosure widget may be expanded or collapsed by the user; when this occurs, the containing window may be expanded to accommodate the increased space requirement. The state of the widget is often signified by a label with a triangle next to it, pointing sideways when it is collapsed and downward when it is expanded (corresponding to the widget's current state), or a button with an arrow pointing downward when it is collapsed and upward when it is expanded (corresponding to how the widget will change state if the button is clicked). Some disclosure widgets can appear as a plus button when collapsed and a minus button when expanded.

In some implementations, the widget may be able to remember its state between invocations; this may increase user familiarity with the interface. In other implementations, the widget may disappear when clicked in order to make room for the newly revealed controls; this state is not remembered.

Some user interface designers call this widget a "norgie",[1] or "twistie".[2]

## See also

* Code folding
* Progressive disclosure

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Widgets (List of …)

Command input|

* Adjustment handle
* Button
* Context menu
* Drop-down list
* Hamburger button
* Menu
* Pie menu

Data input-output|

* Checkbox
* Color picker
* Combo box
* Cycle button
* Date picker
* Grid view
* Light switch
* List box
* List builder
* Radio button
* Scrollbar
* Search box
* Slider
* Spinner
* Text box

Informational|

* Balloon help
* Head-up display in computing
* Head-up display in video games
* Icon
* Infobar
* Label
* Loading screen
* Progress indicator
* Progress bar
* Splash screen
* Throbber
* Sidebar
* Status bar
* Toast
* Tooltip

Containers|

* Accordion
* Tree view
* Client-Side Decoration
* Disclosure widget
* Frame/Fieldset
* Menu bar
* Panel
* Popover
* Ribbon
* Tab
* Toolbar
* Window
* Window decoration
* Workspace

Navigational|

* Address bar
* Breadcrumb
* Hyperlink
* Navigation bar
* Virtual desktop

Special windows|

* Alert dialog box
* Dialog box
* File dialog
* Inspector window
* Modal window
* Palette window

Related concepts|

* File viewer
* List of graphical user interface elements
* Layout manager
* Look and feel
* Mouseover
* Widget toolkit
* WIMP

## References

1. ↑ "Modify "Wiki" and "Blog" in wiki header | Communities". https://discussions.apple.com/message/9986899#10043023.
2. ↑ "IBM: Techdocs - the Technical Sales Library". 19 February 2021. https://www-03.ibm.com/support/techdocs/atsmastr.nsf/Web/TwHelp.

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