FakeSelectionObserver (engine/view/observer)
@ckeditor/ckeditor5-engine/src/view/observer/fakeselectionobserver
Fake selection observer class. If view selection is fake it is placed in dummy DOM container. This observer listens on keydown events and handles moving fake view selection to the correct place if arrow keys are pressed. Fires selectionChange event simulating natural behaviour of SelectionObserver.
Filtering
Properties
-
Reference to the
Document
object. -
isEnabled : Boolean
readonly inherited
State of the observer. If it is disabled events will not be fired.
-
Instance of the view controller.
Methods
-
constructor( view )
Creates new FakeSelectionObserver instance.
Parameters
view : View
-
destroy()
inherited
Disables and destroys the observer, among others removes event listeners created by the observer.
-
disable()
inherited
Disables the observer. This method is called before rendering to prevent firing events during rendering.
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).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.
Parameters
domElement : HTMLElement
name : String
The name of the root element.
-
_fireSelectionChangeDoneDebounced( data )
private
Fires debounced event
selectionChangeDone
. It useslodash#debounce
method to delay function call.Parameters
data : Object
Selection change data.
-
_handleSelectionMove( keyCode )
private
Handles collapsing view selection according to given key code. If left or up key is provided - new selection will be collapsed to left. If right or down key is pressed - new selection will be collapsed to right.
This method fires
event-selectionChange
andevent-selectionChangeDone
events imitating behaviour ofSelectionObserver
.Parameters
keyCode : Number
Fires