UXML element MultiColumnListView

C# class: MultiColumnListView
Namespace: UnityEngine.UIElements
Base class: BaseListView

Member UXML attributes

This element has the following member attributes:

Name	타입	설명
`sorting-enabled`	`boolean`	Whether or not sorting is enabled in the multi-column header.

Inherited UXML attributes

This element inherits the following attributes from its base class:

Name	타입	설명
`binding-path`	`string`	Path of the target property to be bound.
`fixed-item-height`	`int`	The height of a single item in the list, in pixels. This property must be set when using the `virtualizationMethod` is set to `FixedHeight`, for the collection view to function. If set when `virtualizationMethod` is `DynamicHeight`, it serves as the default height to help calculate the number of items necessary and the scrollable area, before items are laid out. It should be set to the minimum expected height of an item.
`focusable`	`boolean`	True if the element can be focused.
`header-title`	`string`	This property controls the text of the foldout header when using `showFoldoutHeader`.
`reorder-mode`	`UIElements.ListViewReorderMode`	This property controls the drag and drop mode for the list view. The default value is `Simple`. When this property is set to `Animated`, Unity adds drag handles in front of every item and the drag and drop manipulation pushes items with an animation when the reordering happens. Multiple item reordering is only supported with the `Simple` drag mode.
`reorderable`	`boolean`	Gets or sets a value that indicates whether the user can drag list items to reorder them. The default value is `false` which allows the user to drag items to and from other views when you implement `canStartDrag`, `setupDragAndDrop`, `dragAndDropUpdate`, and `handleDrop`. Set this value to `true` to allow the user to reorder items in the list.
`selection-type`	`UIElements.SelectionType`	Controls the selection type. The default value is `SelectionType.Single`. When you set the collection view to disable selections, any current selection is cleared.
`show-add-remove-footer`	`boolean`	This property controls whether a footer will be added to the list view. The default value is `false`. When this property is set to `true`, Unity adds a footer under the scroll view. This footer contains two buttons: A “+” button. When clicked, it adds a single item at the end of the list view. A “-” button. When clicked, it removes all selected items, or the last item if none are selected.
`show-alternating-row-backgrounds`	`UIElements.AlternatingRowBackground`	This property controls whether the background colors of collection view rows alternate. Takes a value from the `AlternatingRowBackground` enum.
`show-border`	`boolean`	Enable this property to display a border around the collection view. If set to true, a border appears around the ScrollView that the collection view uses internally.
`show-bound-collection-size`	`boolean`	This property controls whether the list view displays the collection size (number of items). The default value is `true`. When this property is set to `true`, Unity displays the collection size as the first item in the list, but does not make it an actual list item that is part of the list index. If you query for list index 0, Unity returns the first real list item, and not the collection size. If `showFoldoutHeader` is set to `true`, the collection size field is included in the header instead. You can use this property to debug a ListView because the property indicates whether the data source is linked correctly. In production, the collection size rarely displays as a line item in a ListView. SA: `UnityEditor.UIElements.BindingExtensions.Bind`
`show-foldout-header`	`boolean`	This property controls whether the list view displays a header, in the form of a foldout that can be expanded or collapsed. The default value is `false`. When this property is set to `true`, Unity adds a foldout in the hierarchy of the list view and moves the scroll view inside that newly created foldout. You can change the text of this foldout with `headerTitle` property on the ListView. If `showBoundCollectionSize` is set to `true`, the header includes a TextField to control the array size, instead of using the field as part of the list.
`tabindex`	`int`	An integer used to sort focusables in the focus ring. Must be greater than or equal to zero.
`virtualization-method`	`UIElements.CollectionVirtualizationMethod`	The virtualization method to use for this collection when a scroll bar is visible. Takes a value from the `CollectionVirtualizationMethod` enum. The default value is `FixedHeight`. When using fixed height, specify the `fixedItemHeight` property. Fixed height is more performant but offers less flexibility on content. When using `DynamicHeight`, the collection will wait for the actual height to be computed. Dynamic height is more flexible but less performant.

This element also inherits the following attributes from VisualElement:

Name	타입	설명
`content-container`	`string`	Child elements are added to it, usually this is the same as the element itself.
`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 (ie. tree expanded states, scroll position, zoom level). This is the key used to save/load the view data from the view data store. Not setting this key will disable persistence for this `VisualElement`.

USS classes

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

C# property	USS selector	설명
`ussClassName`	`.unity-list-view`	The USS class name for ListView elements. Unity adds this USS class to every instance of the ListView element. Any styling applied to this class affects every ListView located beside, or below the stylesheet in the visual tree.
`itemUssClassName`	`.unity-list-view__item`	The USS class name of item elements in ListView elements. Unity adds this USS class to every item element the ListView contains. Any styling applied to this class affects every item element located beside, or below the stylesheet in the visual tree.
`emptyLabelUssClassName`	`.unity-list-view__empty-label`	The USS class name for label displayed when ListView is empty. Unity adds this USS class to the label displayed if the ListView is empty. Any styling applied to this class affects every empty label located beside, or below the stylesheet in the visual tree.
`reorderableUssClassName`	`.unity-list-view__reorderable`	The USS class name for reorderable animated ListView elements. Unity adds this USS class to every instance of the ListView element when `reorderMode` is set to `Animated`. Any styling applied to this class affects every ListView located beside, or below the stylesheet in the visual tree.
`reorderableItemUssClassName`	`.unity-list-view__reorderable-item`	The USS class name for item elements in reorderable animated ListView. Unity adds this USS class to every element in the ListView when `reorderMode` is set to `Animated`. Any styling applied to this class affects every element located beside, or below the stylesheet in the visual tree.
`reorderableItemContainerUssClassName`	`.unity-list-view__reorderable-item__container`	The USS class name for item container in reorderable animated ListView. Unity adds this USS class to every item container in the ListView when `reorderMode` is set to `Animated`. Any styling applied to this class affects every item container located beside, or below the stylesheet in the visual tree.
`reorderableItemHandleUssClassName`	`.unity-list-view__reorderable-handle`	The USS class name for drag handle in reorderable animated ListView. Unity adds this USS class to drag handles in the ListView when `reorderMode` is set to `Animated`. Any styling applied to this class affects every drag handle located beside, or below the stylesheet in the visual tree.
`reorderableItemHandleBarUssClassName`	`.unity-list-view__reorderable-handle-bar`	The USS class name for drag handle bar in reorderable animated ListView. Unity adds this USS class to every drag handle bar in the ListView when `reorderMode` is set to `Animated`. Any styling applied to this class affects every drag handle bar located beside, or below the stylesheet in the visual tree.
`footerUssClassName`	`.unity-list-view__footer`	The USS class name for the footer of the ListView. Unity adds this USS class to the footer element in the ListView. Any styling applied to this class affects every ListView located beside, or below the stylesheet in the visual tree.
`foldoutHeaderUssClassName`	`.unity-list-view__foldout-header`	The USS class name for the foldout header of the ListView. Unity adds this USS class to the foldout element in the ListView. Any styling applied to this class affects every foldout located beside, or below the stylesheet in the visual tree.
`arraySizeFieldUssClassName`	`.unity-list-view__size-field`	The USS class name for the size field of the ListView when foldout header is enabled. Unity adds this USS class to the size field element in the ListView when `showFoldoutHeader` is set to `true`. Any styling applied to this class affects every size field located beside, or below the stylesheet in the visual tree.
`listViewWithHeaderUssClassName`	`.unity-list-view--with-header`	The USS class name for ListView when foldout header is enabled. Unity adds this USS class to ListView when `showFoldoutHeader` is set to `true`. Any styling applied to this class affects every list located beside, or below the stylesheet in the visual tree.
`listViewWithFooterUssClassName`	`.unity-list-view--with-footer`	The USS class name for ListView when add/remove footer is enabled. Unity adds this USS class to ListView when `showAddRemoveFooter` is set to `true`. Any styling applied to this class affects every list located beside, or below the stylesheet in the visual tree.
`scrollViewWithFooterUssClassName`	`.unity-list-view__scroll-view--with-footer`	The USS class name for scroll view when add/remove footer is enabled. Unity adds this USS class scroll view of `BaseListView`when `showAddRemoveFooter` is set to `true`. Any styling applied to this class affects every list located beside, or below the stylesheet in the visual tree.
`ussClassName`	`.unity-collection-view`	The USS class name for BaseVerticalCollectionView elements. Unity adds this USS class to every instance of the BaseVerticalCollectionView element. Any styling applied to this class affects every BaseVerticalCollectionView located beside, or below the stylesheet in the visual tree.
`borderUssClassName`	`.unity-collection-view--with-border`	The USS class name for BaseVerticalCollectionView elements with a border. Unity adds this USS class to an instance of the BaseVerticalCollectionView element if the instance’s `BaseVerticalCollectionView.showBorder` property is set to true. Any styling applied to this class affects every such BaseVerticalCollectionView located beside, or below the stylesheet in the visual tree.
`itemUssClassName`	`.unity-collection-view__item`	The USS class name of item elements in BaseVerticalCollectionView elements. Unity adds this USS class to every item element the BaseVerticalCollectionView contains. Any styling applied to this class affects every item element located beside, or below the stylesheet in the visual tree.
`dragHoverBarUssClassName`	`.unity-collection-view__drag-hover-bar`	The USS class name of the drag hover bar. Unity adds this USS class to the bar that appears when the user drags an item in the list. Any styling applied to this class affects every BaseVerticalCollectionView located beside, or below the stylesheet in the visual tree.
`dragHoverMarkerUssClassName`	`.unity-collection-view__drag-hover-marker`	The USS class name of the drag hover circular marker used to indicate depth. Unity adds this USS class to the bar that appears when the user drags an item in the list. Any styling applied to this class affects every BaseVerticalCollectionView located beside, or below the stylesheet in the visual tree.
`itemDragHoverUssClassName`	`.unity-collection-view__item--drag-hover`	The USS class name applied to an item element on drag hover. Unity adds this USS class to the item element when it’s being dragged. Any styling applied to this class affects every BaseVerticalCollectionView item located beside, or below the stylesheet in the visual tree.
`itemSelectedVariantUssClassName`	`.unity-collection-view__item--selected`	The USS class name of selected item elements in the BaseVerticalCollectionView. Unity adds this USS class to every selected element in the BaseVerticalCollectionView. The `BaseVerticalCollectionView.selectionType` property decides if zero, one, or more elements can be selected. Any styling applied to this class affects every BaseVerticalCollectionView item located beside, or below the stylesheet in the visual tree.
`itemAlternativeBackgroundUssClassName`	`.unity-collection-view__item--alternative-background`	The USS class name for odd rows in the BaseVerticalCollectionView. Unity adds this USS class to every odd-numbered item in the BaseVerticalCollectionView when the `BaseVerticalCollectionView.showAlternatingRowBackgrounds` property is set to `ContentOnly` or `All`. When the `showAlternatingRowBackgrounds` property is set to either of those values, odd-numbered items are displayed with a different background color than even-numbered items. This USS class is used to differentiate odd-numbered items from even-numbered items. When the `showAlternatingRowBackgrounds` property is set to `None`, the USS class is not added, and any styling or behavior that relies on it’s invalidated.
`listScrollViewUssClassName`	`.unity-collection-view__scroll-view`	The USS class name of the scroll view in the BaseVerticalCollectionView. Unity adds this USS class to the BaseVerticalCollectionView’s scroll view. Any styling applied to this class affects every BaseVerticalCollectionView scroll view located beside, or below the stylesheet in the visual tree.
`disabledUssClassName`	`.unity-disabled`	USS class name of local disabled elements.

UXML element MinMaxSlider

UXML element MultiColumnTreeView

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