Class Dropdown

Dropdown UI element.

Inheritance

object

CallbackEventHandler

Focusable

VisualElement

BaseVisualElement

ExVisualElement

Picker

Picker<DropdownItem, DropdownItem>

Dropdown

EnumField

MaskField

Implements

IEventHandler

IVisualElementScheduler

IExperimentalFeatures

ITransitionAnimations

ITransform

IResolvedStyle

IContextOverrideElement

IAdditionalDataHolder

IInputElement<IEnumerable<int>>

IValidatableElement<IEnumerable<int>>

INotifyValueChanged<IEnumerable<int>>

ISizeableElement

IPressable

Inherited Members

Picker<DropdownItem, DropdownItem>.makeItem

Picker<DropdownItem, DropdownItem>.bindItem

Picker<DropdownItem, DropdownItem>.unbindItem

Picker<DropdownItem, DropdownItem>.makeTitle

Picker<DropdownItem, DropdownItem>.bindTitle

Picker<DropdownItem, DropdownItem>.RefreshTitleUI()

Picker<DropdownItem, DropdownItem>.OnRequestItemCreation(int)

Picker<DropdownItem, DropdownItem>.OnUnbindItem(VisualElement, int)

Picker<DropdownItem, DropdownItem>.GetPickerItem(int)

Picker.titleContainerUssClassName

Picker.titleUssClassName

Picker.trailingContainerUssClassName

Picker.caretUssClassName

Picker.sizeUssClassName

Picker.emphasizedUssClassName

Picker.appuiPickerMenu

Picker.m_Items

Picker.m_Value

Picker.m_TitleContainer

Picker.closeOnSelection

Picker.clickable

Picker.defaultMessage

Picker.defaultValue

Picker.sourceItems

Picker.size

Picker.emphasized

Picker.selectionType

Picker.selectedIndex

Picker.invalid

Picker.validateValue

Picker.SetValueWithoutNotify(IEnumerable<int>)

Picker.value

Picker.Refresh()

Picker.RefreshUI()

Picker.RefreshListUI()

Picker.RefreshTitleUI()

Picker.OnRequestItemCreation(int)

Picker.OnPickerItemsCreated()

Picker.OnValueSet()

Picker.OnPickerItemRemoved(PickerItem, int)

Picker.OnUnbindItem(VisualElement, int)

Picker.GetSizeUssClassName(Size)

ExVisualElement.contentContainer

ExVisualElement.outlineColor

ExVisualElement.backgroundColor

ExVisualElement.passMask

BaseVisualElement.contextPrefix

BaseVisualElement.scaleOverride

BaseVisualElement.themeOverride

BaseVisualElement.langOverride

BaseVisualElement.layoutDirectionOverride

BaseVisualElement.preferredTooltipPlacementOverride

BaseVisualElement.tooltipDelayMsOverride

BaseVisualElement.GetLayoutDirectionUssClassName(Dir)

VisualElement.disabledUssClassName

VisualElement.ExecuteDefaultAction(EventBase)

VisualElement.Focus()

VisualElement.SendEvent(EventBase)

VisualElement.SetEnabledFromHierarchy(bool)

VisualElement.SetEnabled(bool)

VisualElement.MarkDirtyRepaint()

VisualElement.ContainsPoint(Vector2)

VisualElement.Overlaps(Rect)

VisualElement.DoMeasure(float, VisualElement.MeasureMode, float, VisualElement.MeasureMode)

VisualElement.ToString()

VisualElement.GetClasses()

VisualElement.ClearClassList()

VisualElement.AddToClassList(string)

VisualElement.RemoveFromClassList(string)

VisualElement.ToggleInClassList(string)

VisualElement.EnableInClassList(string, bool)

VisualElement.ClassListContains(string)

VisualElement.FindAncestorUserData()

VisualElement.Add(VisualElement)

VisualElement.Insert(int, VisualElement)

VisualElement.Remove(VisualElement)

VisualElement.RemoveAt(int)

VisualElement.Clear()

VisualElement.ElementAt(int)

VisualElement.IndexOf(VisualElement)

VisualElement.Children()

VisualElement.Sort(Comparison<VisualElement>)

VisualElement.BringToFront()

VisualElement.SendToBack()

VisualElement.PlaceBehind(VisualElement)

VisualElement.PlaceInFront(VisualElement)

VisualElement.RemoveFromHierarchy()

VisualElement.GetFirstOfType<T>()

VisualElement.GetFirstAncestorOfType<T>()

VisualElement.Contains(VisualElement)

VisualElement.FindCommonAncestor(VisualElement)

VisualElement.style

VisualElement.customStyle

VisualElement.styleSheets

VisualElement.schedule

VisualElement.tooltip

VisualElement.experimental

VisualElement.viewDataKey

VisualElement.userData

VisualElement.canGrabFocus

VisualElement.focusController

VisualElement.usageHints

VisualElement.transform

VisualElement.layout

VisualElement.contentRect

VisualElement.paddingRect

VisualElement.worldBound

VisualElement.localBound

VisualElement.worldTransform

VisualElement.pickingMode

VisualElement.name

VisualElement.enabledInHierarchy

VisualElement.enabledSelf

VisualElement.visible

VisualElement.generateVisualContent

VisualElement.hierarchy

VisualElement.cacheAsBitmap

VisualElement.parent

VisualElement.panel

VisualElement.visualTreeAssetSource

VisualElement.this[int]

VisualElement.childCount

VisualElement.resolvedStyle

Focusable.Blur()

Focusable.focusable

Focusable.tabIndex

Focusable.delegatesFocus

CallbackEventHandler.RegisterCallback<TEventType>(EventCallback<TEventType>, TrickleDown)

CallbackEventHandler.RegisterCallback<TEventType, TUserArgsType>(EventCallback<TEventType, TUserArgsType>, TUserArgsType, TrickleDown)

CallbackEventHandler.UnregisterCallback<TEventType>(EventCallback<TEventType>, TrickleDown)

CallbackEventHandler.UnregisterCallback<TEventType, TUserArgsType>(EventCallback<TEventType, TUserArgsType>, TrickleDown)

CallbackEventHandler.HandleEvent(EventBase)

CallbackEventHandler.HasTrickleDownHandlers()

CallbackEventHandler.HasBubbleUpHandlers()

CallbackEventHandler.ExecuteDefaultActionAtTarget(EventBase)

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

Namespace: Unity.AppUI.UI

Assembly: Unity.AppUI.dll

Syntax

public class Dropdown : Picker<DropdownItem, DropdownItem>, IEventHandler, IVisualElementScheduler, IExperimentalFeatures, ITransitionAnimations, ITransform, IResolvedStyle, IContextOverrideElement, IAdditionalDataHolder, IInputElement<IEnumerable<int>>, IValidatableElement<IEnumerable<int>>, INotifyValueChanged<IEnumerable<int>>, ISizeableElement, IPressable

Constructors

Dropdown()

Default constructor.

Declaration

public Dropdown()

Dropdown(IList, BindItemFunc, BindTitleFunc, int[])

Construct a Dropdown UI element with a provided dynamic collection of items.

Declaration

public Dropdown(IList items, Picker<DropdownItem, DropdownItem>.BindItemFunc bindItemFunc = null, Picker<DropdownItem, DropdownItem>.BindTitleFunc bindTitleFunc = null, int[] defaultIndices = null)

Parameters

Type	Name	Description
IList	items	An items collection.
Picker<DropdownItem, DropdownItem>.BindItemFunc	bindItemFunc	The binding function used to populate display data for each item.
Picker<DropdownItem, DropdownItem>.BindTitleFunc	bindTitleFunc	The binding function used to populate display data for the title.
int[]	defaultIndices	The selected index by default.

Fields

ussClassName

The Dropdown main styling class.

Declaration

public const string ussClassName = "appui-dropdown"

Field Value

Type	Description
string

Properties

bindTitle

A method that will be called to bind the title.

Declaration

public Picker<DropdownItem, DropdownItem>.BindTitleFunc bindTitle { get; set; }

Property Value

Type	Description
Picker<DropdownItem, DropdownItem>.BindTitleFunc

Methods

ApplyMultiSelectionMessage(LocalizedTextElement, int)

Apply the Picker localized multi selection message.

Declaration

protected virtual void ApplyMultiSelectionMessage(LocalizedTextElement element, int selectionCount)

Parameters

Type	Name	Description
LocalizedTextElement	element	The LocalizedTextElement to apply the message to.
int	selectionCount	The number of selected items.

MakeItem()

Default delegate to create a new DropdownItem for any item.

Declaration

protected static DropdownItem MakeItem()

Returns

Type	Description
DropdownItem	A new DropdownItem.

MakeTitle()

Default delegate to create a new DropdownItem for the title.

Declaration

protected static DropdownItem MakeTitle()

Returns

Type	Description
DropdownItem	A new DropdownItem.

Implements

IEventHandler

IVisualElementScheduler

IExperimentalFeatures

ITransitionAnimations

ITransform

IResolvedStyle

IContextOverrideElement

IAdditionalDataHolder

IInputElement<TValue>

IValidatableElement<TValue>

UnityEngine.UIElements.INotifyValueChanged<T>

ISizeableElement

IPressable

Extension Methods

VisualElementExtensions.FindNavController(VisualElement)

RegisterUpdateCallbackExtensions.RegisterUpdateCallback(VisualElement, EventCallback<UpdateEvent>)

RegisterUpdateCallbackExtensions.UnregisterUpdateCallback(VisualElement, EventCallback<UpdateEvent>)

VisualElementExtensions.EnableDynamicTransform(VisualElement, bool)

VisualElementExtensions.EnablePicking(VisualElement, bool)

VisualElementExtensions.GetChildren<T>(VisualElement, bool)

VisualElementExtensions.GetContextProvider<T>(VisualElement)

VisualElementExtensions.GetContextProvider<T>(VisualElement, string)

VisualElementExtensions.GetContext<T>(VisualElement)

VisualElementExtensions.GetContext<T>(VisualElement, string)

VisualElementExtensions.GetExclusiveRootElement(VisualElement)

VisualElementExtensions.GetLastAncestorOfType<T>(VisualElement)

VisualElementExtensions.GetPreferredTooltipPlacement(VisualElement)

VisualElementExtensions.GetSelfContext<T>(VisualElement)

VisualElementExtensions.GetSelfContext<T>(VisualElement, string)

VisualElementExtensions.GetTooltipContent(VisualElement)

VisualElementExtensions.GetTooltipTemplate(VisualElement)

VisualElementExtensions.HasAncestorsOfType<T>(VisualElement)

VisualElementExtensions.IsContextProvider<T>(VisualElement)

VisualElementExtensions.IsContextProvider<T>(VisualElement, string)

VisualElementExtensions.IsInvisible(VisualElement)

VisualElementExtensions.IsOnScreen(VisualElement)

VisualElementExtensions.ProvideContext<T>(VisualElement, string, T)

VisualElementExtensions.ProvideContext<T>(VisualElement, T)

VisualElementExtensions.RegisterContextChangedCallback<T>(VisualElement, string, EventCallback<ContextChangedEvent<T>>)

VisualElementExtensions.RegisterContextChangedCallback<T>(VisualElement, EventCallback<ContextChangedEvent<T>>)

VisualElementExtensions.SetPreferredTooltipPlacement(VisualElement, OptionalEnum<PopoverPlacement>)

VisualElementExtensions.SetTooltipContent(VisualElement, VisualElementExtensions.TooltipContentCallback)

VisualElementExtensions.SetTooltipTemplate(VisualElement, VisualElement)

VisualElementExtensions.UnregisterContextChangedCallback<T>(VisualElement, string, EventCallback<ContextChangedEvent<T>>)

VisualElementExtensions.UnregisterContextChangedCallback<T>(VisualElement, EventCallback<ContextChangedEvent<T>>)