Class Navigation

The files navigation manages the available and active views

Custom views for the files app can be registered (examples are the favorites views or the shared-with-you view). It is also possible to listen on changes of the registered views or when the current active view is changed.

Example

const navigation = getNavigation()
navigation.addEventListener('update', () => {
    // This will be called whenever a new view is registered or a view is removed
    const viewNames = navigation.views.map((view) => view.name)
    console.warn('Registered views changed', viewNames)
})
// Or you can react to changes of the current active view
navigation.addEventListener('updateActive', (event) => {
    // This will be called whenever the active view changed
    const newView = event.detail // you could also use `navigation.active`
    console.warn('Active view changed to ' + newView.name)
})

Hierarchy (view full)

Constructors

constructor

Properties

addEventListener dispatchEvent removeEventListener

Accessors

active views

Methods

dispatchTypedEvent register remove setActive

Constructors

constructor

Properties

addEventListener

addEventListener: (<T>(type: T, listener: null | TypedEventListenerOrEventListenerObject<{
    update: UpdateViewsEvent;
    updateActive: UpdateActiveViewEvent;
}, T>, options?: boolean | AddEventListenerOptions) => void)

Appends an event listener for events whose type attribute value is type. The callback argument sets the callback that will be invoked when the event is dispatched.

The options argument sets listener-specific options. For compatibility this can be a boolean, in which case the method behaves exactly as if the value was specified as options's capture.

When set to true, options's capture prevents callback from being invoked when the event's eventPhase attribute value is BUBBLING_PHASE. When false (or not present), callback will not be invoked when event's eventPhase attribute value is CAPTURING_PHASE. Either way, callback will be invoked if event's eventPhase attribute value is AT_TARGET.

When set to true, options's passive indicates that the callback will not cancel the event by invoking preventDefault(). This is used to enable performance optimizations described in § 2.8 Observing event listeners.

When set to true, options's once indicates that the callback will only be invoked once after which the event listener will be removed.

The event listener is appended to target's event listener list and is not appended if it has the same type, callback, and capture.

dispatchEvent

dispatchEvent: ((event: Event) => boolean)

Dispatches a synthetic event event to target and returns true if either event's cancelable attribute value is false or its preventDefault() method was not invoked, and false otherwise.

Deprecated

To ensure type safety use dispatchTypedEvent instead.

removeEventListener

removeEventListener: (<T>(type: T, callback: null | TypedEventListenerOrEventListenerObject<{
    update: UpdateViewsEvent;
    updateActive: UpdateActiveViewEvent;
}, T>, options?: boolean | EventListenerOptions) => void)

Removes the event listener in target's event listener list with the same type, callback, and options.

Accessors

active

views

Methods

dispatchTypedEvent

  • dispatchTypedEvent<T>(_type, event): boolean

  • Dispatches a synthetic event event to target and returns true if either event's cancelable attribute value is false or its preventDefault() method was not invoked, and false otherwise.

    Type Parameters

    • T extends "update" | "updateActive"

    Parameters

    Returns boolean

register

  • register(view): void

  • Register a new view on the navigation

    Parameters

    • view: View

      The view to register

    Returns void

    Throws

    Error is thrown if a view with the same id is already registered

remove

  • remove(id): void

  • Remove a registered view

    Parameters

    • id: string

      The id of the view to remove

    Returns void

setActive

  • setActive(view): void

  • Set the currently active view

    Parameters

    • view: null | View

      New active view

    Returns void

    Fires

    UpdateActiveViewEvent

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