Class: shaka.util.EventManager.Binding_

Constructor

(private) new Binding_(target, type, listener, optionsopt)

Parameters:
Name Type Attributes Description
target EventTarget The event target.
type string The event type.
listener shaka.util.EventManager.ListenerType The event listener.
options boolean | AddEventListenerOptions <optional>
 An object that specifies characteristics about the event listener. The passive option, if true, indicates that this function will never call preventDefault(), which improves scrolling performance.
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Members

(private, static) supportsObject_ :boolean|undefined

Type:
  • boolean | undefined
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(nullable) listener :shaka.util.EventManager.ListenerType

Type:
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options :boolean|AddEventListenerOptions

Type:
  • boolean | AddEventListenerOptions
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target :EventTarget

Type:
  • EventTarget
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type :string

Type:
  • string
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Methods

(private, static) convertOptions_(target, valueopt) → {boolean|AddEventListenerOptions}

Converts the provided options value into a value accepted by the browser. Some browsers (e.g. IE11 and Tizen) don't support passing options as an object. So this detects this case and converts it.
Parameters:
Name Type Attributes Description
target EventTarget
value boolean | AddEventListenerOptions <optional>
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Returns:
Type
boolean | AddEventListenerOptions

(private, static) doesSupportObject_(target) → {boolean}

Checks whether the browser supports passing objects as the third argument to addEventListener. This caches the result value in a static field to avoid a bunch of checks.
Parameters:
Name Type Description
target EventTarget
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Returns:
Type
boolean

(export) unlisten()

Detaches the event listener from the event target. This does nothing if the event listener is already detached.
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