Interface: WindowHost

Defined in: webxr-uiextensions/src/adapter.ts:143

The engine-agnostic surface an app needs to build a UI: spawn windows and regions from portable data, observe when panels become wireable, and reach the shared WindowManager.

Panels load asynchronously on every adapter (IWSDK fetches the config; uikit lays out over following frames), so app code must never assume a panel exists immediately after creating its window. onPanelReady is the portable answer - it replaces engine-specific discovery (ECS queries on IWSDK, polling anywhere else) and fires for panels that became ready before the listener was registered, so wiring order never matters.

Extends

• PanelHost

Properties

Property	Modifier	Type	Description	Defined in
supportsStandalonePanels	readonly	boolean	Whether PanelHost.createPanel works on this host. When false the method is not available and throws; spawn a window instead, so the engine owns the panel lifecycle. IWSDK is false, three.js/XR Blocks is true.	webxr-uiextensions/src/adapter.ts:150

Methods

createPanel()

createPanel(configJson: unknown): PanelHandle;

Defined in: webxr-uiextensions/src/adapter.ts:105

Create a panel from compiled UIKitML JSON (the { element, classes } shape produced by the build plugin or by @realitycollective/uix-devtools' compilePanelSource).

Parameters

Parameter	Type
configJson	unknown

Returns

PanelHandle

Inherited from

PanelHost.createPanel

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onPanelReady()

onPanelReady(listener: (event: PanelReadyEvent) => void): () => void;

Defined in: webxr-uiextensions/src/adapter.ts:155

Subscribe to panel readiness. Late subscribers are replayed the windows that are already live. Returns an unsubscribe function.

Parameters

Parameter	Type
listener	(event: PanelReadyEvent) => void

Returns

() => void