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UXML elements reference

The following tables outline the UXML elements available in the UnityEngine.UIElements and UnityEditor.UIElements namespaces.

Base elements

Element	Function	Namespace	Permitted child elements	Attributes
`VisualElement`	The base class for all visual elements.	`UnityEngine.UIElements`	Any number of `VisualElement`	`class`: A list of space separated names. `style`: USS directives to style the element. `name`: A unique string identifier for this element. `picking-mode`: Set to `Position` or `Ignore`. The default value is `Position`. `tooltip`: When the mouse hovers the element a string displays. `focusable`: A Boolean that indicates whether the element is focusable. The default is set to `false` (not focusable). This replaces the obsolete `focus-index` element. `tabindex`: An integer that defines the tabbing position of the element and the position in the tree. A positive value increases tabbing priority. The default is 0. This replaces the obsolete `focus-index` element. `view-data-key` : A string that defines the key used for serialization of the element. This element also accepts any other attribute.
`BindableElement`	An element that can be bound to a `SerializedProperty`. The value of the property and the value displayed are synchronized.	`UnityEngine.UIElements`	Any number of `VisualElement`	`binding-path`: The path of the property that this element is bound to.

Utilities

Element	Function	Namespace	Permitted child elements	Attributes
`Box`	This element is similar to `VisualElement` but draws a box around its content.	`UnityEngine.UIElements`	Any number of `VisualElement`	All attributes of `VisualElement`
`TextElement`	An element that displays text.	`UnityEngine.UIElements`	None	All attributes of `VisualElement` `text`: The text the element should display.
`Label`	A text label.	`UnityEngine.UIElements`	None	All attributes of `TextElement`
`Image`	Displays an image.	`UnityEngine.UIElements`	None	All attributes of `VisualElement`
`IMGUIContainer`	Draws IMGUI content	`UnityEngine.UIElements`	None	All attributes of `VisualElement` `focus-index` default value is `0` `focusable` default value is `true`
`Foldout`	An element that has a toggle button to show or hide its content.	`UnityEngine.UIElements`	Any number of `VisualElement`	All attributes of `BindableElement`

Templates

Element	Function	Namespace	Permitted child elements	Attributes
`Template`	A reference to another UXML template that can be instantiated using the `Instance` element.	`UnityEngine.UIElements`	None	`name`: A unique string identifier for this element `path`: The path of the UXML file to load
`Instance`	Instance of a `Template`	`UnityEngine.UIElements`	None	`template`: The `name` of the `Template` to instantiate
`TemplateContainer`	A template container.	`UnityEngine.UIElements`	None	All attributes of `BindableElement` `template`: A string identifier for this template

Controls

Element	Function	Namespace	Permitted child elements	Attributes
`BaseField<T>`	The abstract base class of all fields.	`UnityEngine.UIElements`	None	All attributes of `BindableElement` `focus-index` default value is `0` `focusable` default value is `true` `label`: The text of the label that is associated with the field
`BaseFieldTraits<ValueType, UxmlType>`		`UnityEngine.UIElements`	None	All attributes of `BaseField<ValueType>` `value`: The base value of the field, of type `ValueType`
`Button`	A standard push button.	`UnityEngine.UIElements`	None	All attributes of `TextElement`
`RepeatButton`	A button that executes an action repeatedly while pressed.	`UnityEngine.UIElements`	None	All attributes of `TextElement` `delay`: The initial delay in milliseconds before the element executes the action is executed. The default value is `0` `interval`: The interval in milliseconds between repeating each action. The default value is `0`
`Toggle`	A toggle button, displayed as a checkbox.	`UnityEngine.UIElements`	None	All attributes of `BaseFieldTraits<bool, UxmlBoolAttributeDescription>` `text` : Right side label of the toggle.
`Scroller`	A scroll bar.	`UnityEngine.UIElements`	None	All attributes of `VisualElement` `low-value`: The minimum value of the scroller `high-value`: The maximum value of the scroller `direction`: Set to `Horizontal` or `Vertical`. The default is `Vertical`. `value`: The position of the scroller cursor
`Slider`	A slider.	`UnityEngine.UIElements`	None	All attributes of `BaseFieldTraits<float, UxmlFloatAttributeDescription>` `low-value`: The minimum value of the slider `high-value`: The maximum value of the slider `direction`: Set to `Horizontal` or `Vertical`. The default is `Horizontal`. `page-size`: The page size of the slider
`SliderInt`	A slider for integer values.	`UnityEngine.UIElements`	None	All attributes of `BaseFieldTraits<int, UxmlIntAttributeDescription>` `low-value`: The minimum value of the slider `high-value`: The maximum value of the slider `direction`: Set to `Horizontal` or `Vertical`. The default is `Horizontal`. `page-size`: The page size of the slider
`MinMaxSlider`	A slider that lets the user specify a minimum and a maximum value.	`UnityEngine.UIElements`	None	All attributes of `BaseField<Vector2>` `low-limit`: The minimum value of the scroller `high-limit`: The maximum value of the scroller `min-value`: The minimum value of the slider cursor `max-value`: The maximum value of the slider cursor
`EnumField`	A field that takes the string values of an underlying `Enum`.	`UnityEditor.UIElements`	None	All attributes of `BaseField<Enum>` `type`: A string representing the C# type of the underlying `Enum`. If the type is in a user assembly, the assembly name must be added to the type name: `MyNamespace.MyEnum, MyAssembly`. The `type` string is always required. `value`: A string that represents the value of the field
`MaskField`	A popup menu that the user can select a group of values from.	`UnityEditor.UIElements`	None	All attributes of `BaseField<int>` `choices`: A comma separated list of up to 32 choices to display in the popup menu `value`: An integer that represents the value of the field as a 32-bit mask.
`LayerField`	A popup menu that the user can select a layerLayers in Unity can be used to selectively opt groups of GameObjects in or out of certain processes or calculations. This includes camera rendering, lighting, physics collisions, or custom calculations in your own code. More info See in Glossary from.	`UnityEditor.UIElements`	None	All attributes of `BaseField<int>` `value`: An integer that represents the value of the field (the selected layer number).
`LayerMaskField`	A popup menu that the user can select a group of layers from.	`UnityEditor.UIElements`	None	All attributes of `MaskField`
`TagField`	A popup menu that the user can select a tagA reference word which you can assign to one or more GameObjects to help you identify GameObjects for scripting purposes. For example, you might define and “Edible” Tag for any item the player can eat in your game. More info See in Glossary from.	`UnityEditor.UIElements`	None	All attributes of `BaseField<string>` `value`: A string that represents the value of the field (the selected tag name).
`ProgressBar`	A progress bar that shows the progression of an operation.	`UnityEditor.UIElements`	None	All attributes of `BindableElement` `low-value`: A float that represents the lowest value of the progress bar. The default is 0. `high-value`: A float that represents the highest value of the progress bar. The default is 100. `title`: A string that represents the title of the progress bar.

Text input

Element	Function	Namespace	Permitted child elements	Attributes
`TextInputBaseField<TValueType>`	An abstract base class for all text fields.	`UnityEngine.UIElements`	None	All attributes of `BaseFieldTraits<string, UxmlStringAttributeDescription>` `text`: The text value of the field `max-length`: The maximum number of characters that the field can contain. Default value of `-1` sets no limits on the text length. `password`: A boolean that indicates whether the field content should be shown or displayed using the `maskCharacter` character. `false` is the default setting. `mask-character`: A character that displays the field content when `password` is `true`. Default is the character `*`. `readonly`: A boolean that indicates that the field is read-only. The default value is `false`
`TextField`	An editable text field.	`UnityEngine.UIElements`	None	All attributes of `TextInputBaseField<string>` `multiline`: A boolean that indicates whether the text field displays its text on multiple lines. Set to `true` to display on multiple lines, or set to `false` to display or on a single line, ignoring any line break in the text. `false` is the default.
`IntegerField`	A text field that accepts an integer (32-bit) value.	`UnityEditor.UIElements`	None	All attributes of `BaseFieldTraits<int, UxmlIntAttributeDescription>`
`LongField`	A text field that accepts a long integer (64 bits) value.	`UnityEditor.UIElements`	None	All attributes of `BaseFieldTraits<long, UxmlLongAttributeDescription>`
`FloatField`	A text field that accepts a single precision floating point value.	`UnityEditor.UIElements`	None	All attributes of `BaseFieldTraits<float, UxmlFloatAttributeDescription>`
`DoubleField`	A text field that accepts a double precision floating point value.	`UnityEditor.UIElements`	None	All attributes of `BaseFieldTraits<double, UxmlDoubleAttributeDescription>`
`Vector2Field`	A set of two text fields that accept floating point values to edit the value of a `Vector2`.	`UnityEditor.UIElements`	None	All attributes of `BaseField<Vector2>` `x`: The value of the X coordinate `y`: The value of the Y coordinate
`Vector2IntField`	A set of two text fields that accept integer values to edit the value of a `Vector2Int`.	`UnityEditor.UIElements`	None	All attributes of `BaseField<Vector2Int>` `x`: The value of the X coordinate `y`: The value of the Y coordinate
`Vector3Field`	A set of three text fields that accept floating point values to edit the value of a `Vector3`.	`UnityEditor.UIElements`	None	All attributes of `BaseField<Vector3>` `x`: The value of the X coordinate `y`: The value of the Y coordinate `z`: The value of the Z coordinate
`Vector3IntField`	A set of three text fields that accept integer values to edit the value of a `Vector3Int`.	`UnityEditor.UIElements`	None	All attributes of `BaseField<Vector3Int>` `x`: The value of the X coordinate `y`: The value of the Y coordinate `z`: The value of the Z coordinate
`Vector4Field`	A set of four text fields that accept floating point values to edit the value of a `Vector4`.	`UnityEditor.UIElements`	None	All attributes of `BaseField<Vector4>` `x`: The value of the X coordinate `y`: The value of the Y coordinate `z`: The value of the Z coordinate `w`: The value of the W coordinate
`RectField`	A set of four text fields that accept floating point values to edit the value of a rectangle.	`UnityEditor.UIElements`	None	All attributes of `BaseField<Rect>` `x`: The value of the top left corner X coordinate `y`: The value of the top left corner Y coordinate `w`: The width of the rectangle `h`: the height of the rectangle
`RectIntField`	A set of four text fields that accept integer values to edit the value of a rectangle.	`UnityEditor.UIElements`	None	All attributes of `BaseField<RectInt>` `x`: The value of the top left corner X coordinate `y`: The value of the top left corner Y coordinate `w`: The width of the rectangle `h`: the height of the rectangle
`BoundsField`	A set of six text fields that accept floating point values to edit the value of a bounding rectangle.	`UnityEditor.UIElements`	None	All attributes of `BaseField<Bounds>` `cx`: The value of the center X coordinate `cy`: The value of the center Y coordinate `cz`: The value of the center Z coordinate `ex`: The value of the extent X coordinate `ey`: The value of the extent Y coordinate `ez`: The value of the extent Z coordinate
`BoundsIntField`	A set of six text fields that accept integer values to edit the value of a bounding rectangle.	`UnityEditor.UIElements`	None	All attributes of `BaseField<BoundsInt>` `px`: The value of the position X coordinate `py`: The value of the postion Y coordinate `pz`: The value of the position Z coordinate `sx`: The value of the size X coordinate `sy`: The value of the size Y coordinate `sz`: The value of the size Z coordinate

Complex widgets

Element	Function	Namespace	Permitted child elements	Attributes
`PropertyField`	A label and a field to edit a value.	`UnityEditor.UIElements`	None	All attributes of `VisualElement` `binding-path`: The path of the property this element is bound to `label`: The label for the field
`ColorField`	A color picker field.	`UnityEditor.UIElements`	None	All attributes of `BaseFieldTraits<Color, UxmlColorAttributeDescription>` `show-eye-dropper`: A boolean that indicates whether to show the eye dropper or not. Set to `true` to display the eye dropper, and `false` to hide it. By default this is set to `true`. `show-alpha`: A boolean that indicates whether to show the alpha control. Set to `true` to show the control or `false` to hide it. By default this is set to `true`. `hdr`: A boolean that indicates whether to use the high dynamic range color picker. Set to `true` to use the picker. By default this is set to `false`.
`CurveField`	A curve editor field.	`UnityEditor.UIElements`	None	All attributes of `BaseField<AnimationCurve>`
`GradientField`	A gradient editor field.	`UnityEditor.UIElements`	None	All attributes of `BaseField<Gradient>`
`ObjectField`	An object selector field.	`UnityEditor.UIElements`	None	All attributes of `BaseField<Object>` `allow-scene-objects`: A boolean that indicates whether objects from the scene can be selected. Set to `true` to enable object selection or `false` disable it. By default this is set to `true`.
`InspectorElement`	An element that displays a property in an inspectorA Unity window that displays information about the currently selected GameObject, asset or project settings, allowing you to inspect and edit the values. More info See in Glossary window.	`UnityEditor.UIElements`	Any number of `VisualElement`	All attributes of `BindableElement`

Toolbar

Element	Function	Namespace	Permitted child elements	Attributes
`Toolbar`	A container to hold toolbarA row of buttons and basic controls at the top of the Unity Editor that allows you to interact with the Editor in various ways (e.g. scaling, translation). More info See in Glossary items.	`UnityEditor.UIElements`	Any `VisualElement`	All attributes of `VisualElement`
`ToolbarButton`	A button for the toolbar.	`UnityEditor.UIElements`	None	All attributes of `Button`
`ToolbarToggle`	A toggle for the toolbar.	`UnityEditor.UIElements`	None	All attributes of `Toggle`
`ToolbarMenu`	A drop down menu for the toolbar. The menu has a single arrow pointing down.	`UnityEditor.UIElements`	None	All attributes of `TextElement`
`ToolbarSearchField`	A search field for the toolbar.	`UnityEditor.UIElements`	None	All attributes of `VisualElement`
`ToolbarPopupSearchField`	A search field with a popup menu of search options.	`UnityEditor.UIElements`	None	All attributes of `VisualElement`
`ToolbarSpacer`	An element that inserts a fixed amount of whitespace between toolbar buttons.	`UnityEditor.UIElements`	None	All attributes of `VisualElement`

Views and windows

Element	Function	Namespace	Permitted child elements	Attributes
`ListView`	Displays a list of elements.	`UnityEngine.UIElements`	None	All attributes of `VisualElement` `item-height`: The height in pixels of each item in the list
`ScrollView`	A scrollable view, with horizontal and vertical scrollers.	`UnityEngine.UIElements`	Any number of `VisualElement`	All attributes of `VisualElement` `mode`: the mode of the scroll view. By default this is set to `ScrollViewMode.Vertical` `show-horizontal-scroller`: A boolean that indicates whether to show the horizontal scroller. By default this is set to `false` `show-vertical-scroller`: A boolean that indicates whether to show the vertical scroller. By default this is set to `false` `horizontal-page-size`: The page size value of the horizontal scroller `vertical-page-size`: The page size of the vertical scroller
`TreeView`	A view for displaying elements in a tree hierarchy.	`UnityEngine.UIElements`	Any number of `VisualElement`	All attributes of `VisualElement` `item-height`: The height of an item in the underlying list shown
`PopupWindow`	A UIElements window, displayed on top of other content.	`UnityEditor.UIElements`	None	All attributes of `TextElement`

2019–05–20 Page amended

Load UXML from C# scripts

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