API Referenceclass

class RenderContext

An abstract class that supports global view rendering, part of the global application context.

abstract class RenderContext extends ObservableObject;

Notes

• This class is implemented by a platform renderer, e.g. to render UI elements to the browser DOM, or in-memory (for testing). Most of these methods should not be used directly by an application.
• The current renderer, once initialized, should be available as app.renderer.

Type members

• type RenderContext.RenderCallback static
  Type definition for the callback that’s used for asynchronous rendering.
• type RenderContext.PlacementOptions static
  Type definition for global rendering placement options.
• type RenderContext.PlacementMode static
  An identifier that specifies a global rendering mode, part of RenderContext.PlacementOptions.
• class Output static
  An object that encapsulates a rendered output element, created by the global rendering context.
• class ViewController static
  A class that’s used to render a view referenced by a property.
• interface RenderContext.UIElementRenderer static
  Interface for platform-specific state queries on UI element observers.

Instance members

• getRenderCallback() abstract
  Returns a render callback for root view output; do not use directly.
• createObserver() abstract
  Creates a new renderer observer for the provided view object; do not use directly.
• clear() abstract
  Clears all current root view output.
• remount() abstract
  Re-renders output, and relocates existing mounted view output if needed.
• setTitle() abstract
  Overrides the current window title, if supported.
• modalFactory abstract
  The current modal factory.
• render()
  Renders a view as root, until the view object is unlinked.

Inherited members

• emit()
  Emits an event, immediately calling all event handlers.
• emitChange()
  Emits a change event.
• listen()
  Adds a handler for all events emitted by this object.
• listenOnce()
  Returns a promise for a single event with the provided name.
• listenAsync()
  Adds a handler for all events emitted by this object, and returns an async iterable.
• observe()
  Observes a property, a bound property from an attached parent, or an observable object.
• observeAsync()
  Observes one or more targets asynchronously, batching or debouncing/throttling updates.
• attach() protected
  Attaches the specified observable object to this object.
• isUnlinked()
  Returns true if the object has been unlinked.
• unlink()
  Unlinks this observable object.
• beforeUnlink() protected
  A method that’s called immediately before unlinking an object, can be overridden.