Protected_The application element this entity is registered with, cached at registration time so the entity can be unregistered even once this element has left the DOM.
Protected_Whether the hierarchy has been built for this entity — set once _buildHierarchy has
parented it. Read by subclasses that gate work on the entity being in the scene graph.
The nearest ancestor <pc-app> element, or null if this element has no <pc-app>
ancestor. The search starts at the parent, so an element never resolves to itself.
The closest app element, or null.
The nearest ancestor element that fronts an entity — <pc-entity>, <pc-model> or
<pc-node> — or null if this element has no such ancestor. The search starts at the
parent, so an element never resolves to itself.
The closest entity-fronting element, or null.
Gets the enabled state of the entity.
Whether the entity is enabled.
Sets the enabled state of the entity.
Whether the entity is enabled.
Gets the name of the entity.
The name of the entity.
Sets the name of the entity.
The name of the entity.
Gets the tags of the entity.
The tags of the entity.
Sets the tags of the entity.
The tags of the entity.
Protected_Called by _buildHierarchy once the backing entity has been parented — exactly once
per build cycle. The default announces readiness, which is what a parented <pc-entity>
means; <pc-model> overrides it to start loading content instead, because its readiness
tracks the content settling rather than the host entering the scene graph.
Protected_Handles the destruction of the backing entity. Resets the element so a later re-insertion
starts clean: _built must be cleared alongside _entity, or _buildHierarchy would bail
and a re-created entity would never be parented. Readiness is re-armed for the same
reason — with the entity gone, a resolved ready promise would resume its awaiters against
a null entity.
The entity that was destroyed.
Protected_Called when the element is fully initialized and ready. Subclasses should call this when
they're ready. Resolves the ready promise and dispatches a bubbling, composed ready
event. Signals at most once per readiness cycle: a repeat call before _resetReady
has re-armed the promise does nothing.
Protected_Registers entity as this element's backing entity with the owning application, which
joins engine nodes back to elements by identity (never by name).
The entity to register.
Protected_Returns the ready promise to its pending state. Subclasses should call this when the
resource their readiness announced is torn down (typically from disconnectedCallback),
so that a later re-initialization can signal readiness again. Does nothing while the
promise is still pending — an in-flight waiter carries over to the next readiness cycle
rather than being stranded on a promise nothing will ever resolve.
Protected_Removes the registration for entity.
The entity to unregister.
Returns a promise that resolves with this element when it's ready. This is the low-level primitive underlying whenReady, which is the recommended way to wait for elements.
Readiness tracks the element's current lifecycle: once a ready element is torn down (for example by removing it from the document), this returns a fresh promise that resolves when the element is next ready. A promise obtained earlier stays resolved — call this again after re-inserting an element rather than reusing a promise from before its removal.
A promise that resolves with this element when it's ready.
The base class for elements that create and own their backing entity:
<pc-entity>and<pc-model>, whose host entity carries the same authored properties. It carries the cached property state, entity creation and parenting, and the reset that follows the entity's destruction.<pc-node>sits outside this class: it borrows an entity a model instantiated, and its properties are nullable overrides rather than owned values.