Interface OpenUIContextValue

packages/svelte-lang/src/lib/context.svelte.ts:19–56

 * This avoids the stale-closure problem and matches Svelte's snippet model.
 */
export interface OpenUIContextValue {
  /** The active component library (schema + renderers). */
  library: Library;

  /**
   * Trigger an action. Components call this to fire structured ActionEvents.
   *
   * @param userMessage  Human-readable label ("Submit Application")
   * @param formName  Optional form name — if provided, form state for this form is included
   * @param action  Optional custom action config { type, params }
   */
  triggerAction: (userMessage: string, formName?: string, action?: ActionConfig) => void;

  /** Whether the LLM is currently streaming content. */
  isStreaming: boolean;

  /** Get a form field value. Returns undefined if not set. */
  getFieldValue: (formName: string | undefined, name: string) => any;

  /**
   * Set a form field value.
   *
   * @param formName  The form's name prop
   * @param componentType  The component type (e.g. "Input", "Select", "RadioGroup")
   * @param name  The field's name prop
   * @param value  The new value
   * @param shouldTriggerSaveCallback  When true, persists the updated state via updateMessage.
   *   Text inputs should pass `false` on change and `true` on blur.
   *   Discrete inputs (Select, RadioGroup, etc.) should always pass `true`.
   */
  setFieldValue: (
    formName: string | undefined,
    componentType: string | undefined,
    name: string,
    value: any,
    shouldTriggerSaveCallback?: boolean,
  ) => void;
}

const OPENUI_CONTEXT_KEY = Symbol("openui-context");
const FORM_NAME_CONTEXT_KEY = Symbol("openui-form-name");