content-container string Logical container where child elements are added. If a child is added to this element, the child is added to this elementâs content container instead.
When iterating over the VisualElement.Children of an element, the elementâs content container hierarchy is used instead of the element itself. This can lead to unexpected results, such as elements being ignored by the navigation events if they are not directly in the content containerâs hierarchy. Refer to IFocusRing for more information.
If the content container is the same as the element itself, child elements are added directly to the element. This is true for most elements but can be overridden by more complex types.
The ScrollView, for example, has a content container that is different from itself. In that case, child elements added to the scroll view are added to its content container element instead. While the physical parent (VisualElement.Hierarchy.parent) of the child elements is the scroll viewâs content container element, their logical parent (VisualElement.parent) still refers to the scroll view itself. Since some of the scroll viewâs focusable children are not part of its logical hierarchy, like its Scroller elements, these focusable children are not considered by default when using sequential navigation. Refer to How can I change what element is focused next for an example of a workaround solution if the default navigation rules donât correspond to your needs.
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. data-source-type System.Type The possible type of data source assignable to this VisualElement.
This information is only used by the UI Builder as a hint to provide some completion to the data source path field when the effective data source cannot be specified at design time.
enabled boolean Returns true if the VisualElement is enabled locally.
This flag isnât changed if the VisualElement is disabled implicitly by one of its parents. To verify this, use enabledInHierarchy.
language-direction UIElements.LanguageDirection Indicates the directionality of the elementâs text. The value will propagate to the elementâs children.
Setting languageDirection to RTL can only get the basic RTL support like text reversal. To get more comprehensive RTL support, such as line breaking, word wrapping, or text shaping, you must enable Advance Text Generator.
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 the target of pointer events or picked by IPanel.Pick queries.
Elements can not be picked if:
- They are invisible- Their style.display is set to DisplayStyle.None
Elements with a picking mode of PickingMode.Ignore never receive the hover pseudo-state.
style string Sets the style values on a VisualElement.
The returned style data, computed from USS files or inline styles written to this object in C#, doesnât represent the fully resolved styles, such as the final height and width of a VisualElement. To access these fully resolved styles, use resolvedStyle.
For information about how to use this property and all the supported USS properties, refer to the Apply styles in C# scripts and USS properties reference manual pages.
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. Itâs 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 donât set this key, the persistence is disabled for the associated VisualElement. For more information, refer to View data persistence in the Unity Manual.
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