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Class

ArrowKeysObserver (engine/view/observer)

@ckeditor/ckeditor5-engine/src/view/observer/arrowkeysobserver

class
See source

Arrow keys observer introduces the Document#arrowKey event.

Note that this observer is attached by the View and is available by default.

Filtering

Properties

  • document : Document

    readonly inherited

    A reference to the Document object.

    See source

  • isEnabled : Boolean

    readonly inherited

    The state of the observer. If it is disabled, no events will be fired.

    See source

  • view : View

    readonly inherited

    An instance of the view controller.

    See source

Methods

  • constructor( view )

    inherited

    Creates an instance of the observer.

    See source

    Parameters

    view : View

  • checkShouldIgnoreEventFromTarget( domTarget ) → Boolean

    inherited

    Checks whether a given DOM event should be ignored (should not be turned into a synthetic view document event).

    See source

    Currently, an event will be ignored only if its target or any of its ancestors has the data-cke-ignore-events attribute. This attribute can be used inside the structures generated by DowncastWriter#createUIElement() to ignore events fired within a UI that should be excluded from CKEditor 5's realms.

    Parameters

    domTarget : Node

    The DOM event target to check (usually an element, sometimes a text node and potentially sometimes a document, too).

    Returns

    Boolean

    Whether this event should be ignored by the observer.

  • destroy()

    inherited

    Disables and destroys the observer, among others removes event listeners created by the observer.

    See source

  • disable()

    inherited

    Disables the observer. This method is called before rendering to prevent firing events during rendering.

    See source

    Related:

  • enable()

    inherited

    Enables the observer. This method is called when the observer is registered to the View and after rendering (all observers are disabled before rendering).

    See source

    A typical use case for disabling observers is that mutation observers need to be disabled for the rendering. However, a child class may not need to be disabled, so it can implement an empty method.

    Related:

  • observe( domElement, name )

    inherited

    Starts observing the given root element.

    See source

    Parameters

    domElement : HTMLElement
    name : String

    The name of the root element.