Variable watch

Type Declaration

• • <T>(
        init: T,
        objs: (Connectable | [obj: Connectable, signal?: string])[],
        callback: () => T,
    ): B<T>

  • Creates a binding that re-evaluates a callback whenever specified objects emit signals.

    Type Parameters

    • T

    Parameters

    • init: T

      The initial value

    • objs: (Connectable | [obj: Connectable, signal?: string])[]

      Connectable object(s) to watch, optionally with signal names

    • callback: () => T

      Callback if signal name was provided

    Returns B<T>

    A binding of the watched value

    Example

    const label = Widget.Label({
        label: Utils.watch('', audio, 'speaker-changed', () => {
            return `Volume: ${audio.speaker?.volume}`;
        }),
    });
    Copy

  • <T>(init: T, obj: Connectable, signal: string, callback: () => T): B<T>

  • Creates a binding that re-evaluates a callback whenever specified objects emit signals.

    Type Parameters

    • T

    Parameters

    • init: T

      The initial value

    • obj: Connectable
    • signal: string
    • callback: () => T

      Callback if signal name was provided

    Returns B<T>

    A binding of the watched value

    Example

    const label = Widget.Label({
        label: Utils.watch('', audio, 'speaker-changed', () => {
            return `Volume: ${audio.speaker?.volume}`;
        }),
    });
    Copy

  • <T>(init: T, obj: Connectable, callback: () => T): B<T>

  • Creates a binding that re-evaluates a callback whenever specified objects emit signals.

    Type Parameters

    • T

    Parameters

    • init: T

      The initial value

    • obj: Connectable
    • callback: () => T

      Callback if signal name was provided

    Returns B<T>

    A binding of the watched value

    Example

    const label = Widget.Label({
        label: Utils.watch('', audio, 'speaker-changed', () => {
            return `Volume: ${audio.speaker?.volume}`;
        }),
    });
    Copy