# TransitionEventBase<T>

> Transition events abstract base class.

## Definition

* **Type:** Class
* **Namespace:** [UnityEngine.UIElements](/engine/6000.3/script-reference/unityengine/uielements.md)
* **Assembly:** UnityEngine.UIElementsModule
* **Inherits from:** [EventBase\<T>](/engine/6000.3/script-reference/unityengine/uielements/eventbase1.md)
* **Implements:** [IDisposable](https://learn.microsoft.com/dotnet/api/system.idisposable), [ITransitionEvent](/engine/6000.3/script-reference/unityengine/uielements/itransitionevent.md)

```csharp
public abstract class TransitionEventBase<T> : EventBase<T>, IDisposable, ITransitionEvent where T : TransitionEventBase<T>, new()
```

## Remarks

Refer to the [Transition events](/engine/6000.3/manual/uitoolkits/uielements/uie-events/reference/uie-transition-events.md) manual page for more information and examples.

## Constructors

| Constructor                                                                                                     | Description  |
| --------------------------------------------------------------------------------------------------------------- | ------------ |
| [TransitionEventBase\`1()](/engine/6000.3/script-reference/unityengine/uielements/transitioneventbase1/ctor.md) | Constructor. |

## Properties

| Property                                                                                                                | Description                                                                        |
| ----------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------- |
| [elapsedTime](/engine/6000.3/script-reference/unityengine/uielements/transitioneventbase1/elapsedtime.md)               | The number of seconds the transition has been running, excluding delay phase time. |
| [stylePropertyNames](/engine/6000.3/script-reference/unityengine/uielements/transitioneventbase1/stylepropertynames.md) | The names of the properties associated with the transition.                        |

## Methods

| Method                                                                                                            | Description                                                                                                                                           |
| ----------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------- |
| [AffectsProperty](/engine/6000.3/script-reference/unityengine/uielements/transitioneventbase1/affectsproperty.md) | Determines whether the [ITransitionEvent](/engine/6000.3/script-reference/unityengine/uielements/itransitionevent.md) affects the specified property. |

## Static Methods

| Method                                                                                                | Description                                                                                                                                                                                                         |
| ----------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [GetPooled](/engine/6000.3/script-reference/unityengine/uielements/transitioneventbase1/getpooled.md) | Gets an event from the event pool and initializes it with the given values. Use this function instead of creating new events. Events obtained from this method should be released back to the pool using Dispose(). |

## Inheritance

**Inherited Members:**

* [EventBase\<T>.SetCreateFunction(Func\<T>)](/engine/6000.3/script-reference/unityengine/uielements/eventbase1/setcreatefunction.md)
* [EventBase\<T>.TypeId()](/engine/6000.3/script-reference/unityengine/uielements/eventbase1/typeid.md)
* [EventBase\<T>.GetPooled()](/engine/6000.3/script-reference/unityengine/uielements/eventbase1/getpooled.md)
* [EventBase\<T>.Dispose()](/engine/6000.3/script-reference/unityengine/uielements/eventbase1/dispose.md)
* [EventBase\<T>.eventTypeId](/engine/6000.3/script-reference/unityengine/uielements/eventbase1/eventtypeid.md)
* [EventBase.RegisterEventType()](/engine/6000.3/script-reference/unityengine/uielements/eventbase/registereventtype.md)
* [EventBase.PreDispatch(IPanel)](/engine/6000.3/script-reference/unityengine/uielements/eventbase/predispatch.md#predispatch\(ipanel\))
* [EventBase.PostDispatch(IPanel)](/engine/6000.3/script-reference/unityengine/uielements/eventbase/postdispatch.md#postdispatch\(ipanel\))
* [EventBase.StopPropagation()](/engine/6000.3/script-reference/unityengine/uielements/eventbase/stoppropagation.md)
* [EventBase.StopImmediatePropagation()](/engine/6000.3/script-reference/unityengine/uielements/eventbase/stopimmediatepropagation.md)
* [EventBase.timestamp](/engine/6000.3/script-reference/unityengine/uielements/eventbase/timestamp.md)
* [EventBase.bubbles](/engine/6000.3/script-reference/unityengine/uielements/eventbase/bubbles.md)
* [EventBase.tricklesDown](/engine/6000.3/script-reference/unityengine/uielements/eventbase/tricklesdown.md)
* [EventBase.ignoreDisabledElements](/engine/6000.3/script-reference/unityengine/uielements/eventbase/ignoredisabledelements.md)
* [EventBase.target](/engine/6000.3/script-reference/unityengine/uielements/eventbase/target.md)
* [EventBase.isPropagationStopped](/engine/6000.3/script-reference/unityengine/uielements/eventbase/ispropagationstopped.md)
* [EventBase.isImmediatePropagationStopped](/engine/6000.3/script-reference/unityengine/uielements/eventbase/isimmediatepropagationstopped.md)
* [EventBase.propagationPhase](/engine/6000.3/script-reference/unityengine/uielements/eventbase/propagationphase.md)
* [EventBase.currentTarget](/engine/6000.3/script-reference/unityengine/uielements/eventbase/currenttarget.md)
* [EventBase.dispatch](/engine/6000.3/script-reference/unityengine/uielements/eventbase/dispatch.md)
* [EventBase.imguiEvent](/engine/6000.3/script-reference/unityengine/uielements/eventbase/imguievent.md)
* [EventBase.originalMousePosition](/engine/6000.3/script-reference/unityengine/uielements/eventbase/originalmouseposition.md)
* [EventBase.pooled](/engine/6000.3/script-reference/unityengine/uielements/eventbase/pooled.md)