Version: 2021.3
LanguageEnglish
  • C#

CallbackEventHandler

class in UnityEngine.UIElements

/

Implemented in:UnityEngine.UIElementsModule


Implements interfaces:IEventHandler

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Description

Interface for classes capable of having callbacks to handle events.

Public Methods

HandleEvent Handle an event, most often by executing the callbacks associated with the event.
HasBubbleUpHandlers Return true if event handlers for the event propagation BubbleUp phase have been attached on this object.
HasTrickleDownHandlers Returns true if event handlers, for the event propagation TrickleDown phase, are attached to this object.
RegisterCallback Adds an event handler to the instance. If the event handler has already been registered for the same phase (either TrickleDown or BubbleUp) then this method has no effect.
SendEvent Sends an event to the event handler.
UnregisterCallback Remove callback from the instance.

Protected Methods

ExecuteDefaultAction Executes logic after the callbacks registered on the event target have executed, unless the event has been marked to prevent its default behaviour. EventBase{T}.PreventDefault.
ExecuteDefaultActionAtTarget Executes logic after the callbacks registered on the event target have executed, unless the event is marked to prevent its default behaviour. EventBase{T}.PreventDefault.