UXML element PopupWindow

PopupWindow is a text element with a background image and style. It’s not a window of any kind and has no logic associated with it. It’s equivalent to ShowPopup.

Note: For full pop-up functionality, such as automatically closing when the window loses focus, use UnityEditor.PopupWindow. Refer to Create a popup window for an example.

C# base class and namespace

C# class: PopupWindow
Namespace: UnityEngine.UIElements
Base class: TextElement

Inherited UXML attributes

This element inherits the following attributes from its base class:

名称	类型	描述
`binding-path`	`string`	Path of the target property to be bound.
`display-tooltip-when-elided`	`boolean`	When true, a tooltip displays the full version of elided text, and also if a tooltip had been previously provided, it will be overwritten.
`emoji-fallback-support`	`boolean`	Specifies the order in which the system should look for Emoji characters when rendering text. If this setting is enabled, the global Emoji Fallback list will be searched first for characters defined as Emoji in the Unicode 14.0 standard.
`enable-rich-text`	`boolean`	When false, rich text tags will not be parsed.
`focusable`	`boolean`	True if the element can be focused.
`parse-escape-sequences`	`boolean`	Specifies whether escape sequences are displayed as is or if they are replaced by the character they represent.
`tabindex`	`int`	An integer used to sort focusables in the focus ring. Must be greater than or equal to zero.
`text`	`string`	The text to be displayed. Changing this value will implicitly invoke the `INotifyValueChanged_1.value` setter, which will raise a `ChangeEvent_1` of type string.

This element also inherits the following attributes from VisualElement:

名称	类型	描述
`content-container`	`string`	Child elements are added to it, usually this is the same as the element itself.
`data-source`	`Object`	Assigns a data source to this VisualElement which overrides any inherited data source. This data source is inherited by all children.
`data-source-path`	`string`	Path from the data source to the value.
`name`	`string`	The name of this VisualElement. Use this property to write USS selectors that target a specific element. The standard practice is to give an element a unique name.
`picking-mode`	`UIElements.PickingMode`	Determines if this element can be pick during mouseEvents or `IPanel.Pick` queries.
`style`	`string`	Reference to the style object of this element. Contains data computed from USS files or inline styles written to this object in C#.
`tooltip`	`string`	Text to display inside an information box after the user hovers the element for a small amount of time. This is only supported in the Editor UI.
`usage-hints`	`UIElements.UsageHints`	A combination of hint values that specify high-level intended usage patterns for the `VisualElement`. This property can only be set when the `VisualElement` is not yet part of a `Panel`. Once part of a `Panel`, this property becomes effectively read-only, and attempts to change it will throw an exception. The specification of proper `UsageHints` drives the system to make better decisions on how to process or accelerate certain operations based on the anticipated usage pattern. Note that those hints do not affect behavioral or visual results, but only affect the overall performance of the panel and the elements within. It’s advised to always consider specifying the proper `UsageHints`, but keep in mind that some `UsageHints` might be internally ignored under certain conditions (e.g. due to hardware limitations on the target platform).
`view-data-key`	`string`	Used for view data persistence, such as tree expanded states, scroll position, or zoom level. This key is used to save and load the view data from the view data store. If you don’t set this key, the persistence is disabled for the associated `VisualElement`. For more information, refer to View data persistence.

USS classes

The following table lists all the C# public property names and their related USS selector.

C# property	USS selector	描述
`ussClassName`	`.unity-popup-window`	USS class name of elements of this type.
`contentUssClassName`	`.unity-popup-window__content-container`	USS class name of content elements in elements of this type.
`ussClassName`	`.unity-text-element`	USS class name of elements of this type.
`selectableUssClassName`	`.unity-text-element__selectable`	USS class name of selectable text elements.
`disabledUssClassName`	`.unity-disabled`	USS class name of local disabled elements.

You can also use the Matching Selectors section in the Inspector or the UI Toolkit Debugger to see which USS selectors affect the components of the VisualElement at every level of its hierarchy.

其他资源

UXML element ObjectField

UXML element ProgressBar