Method refreshActive

packages/playground/src/components/TrackList.ts:57–65

()

    }

    private refreshActive(): void {
        const active = new Set<number>();
        for (const t of this.api.tracks) {
            active.add(t.index);
        }
        for (const item of this.items) {
            item.setActive(active.has(item.track.index));
        }
    }

    /** All TrackItem instances, in score order. */
    getItems(): readonly TrackItem[] {