wb.timelineStyles

getDefault(): Promise<string>;

Get the workbook's default timeline style preset. Returns 'light1' if not explicitly set.

setDefault(style: string | null): Promise<void>;

Set the workbook's default timeline style preset. Pass null to reset to 'light1'.

getCount(): Promise<number>;

Get the number of built-in timeline styles.

getItem(name: string): Promise<TimelineStyleInfo | null>;

Get a specific timeline style by name. Returns null if not found.

list(): Promise<TimelineStyleInfo[]>;

List all built-in timeline styles.

add(name: string, style: SlicerCustomStyle, makeUniqueName?: boolean): Promise<string>;

Add a new custom named timeline style. @param name - Desired style name. @param style - Custom style definition. @param makeUniqueName - When true, auto-appends a suffix if the name collides. Default: false. @returns The final name assigned to the style (may differ from `name` when `makeUniqueName` is true).

get(name: string): Promise<NamedTimelineStyle | null>;

Get a custom named timeline style by name, or null if not found.

remove(name: string): Promise<void>;

Remove a custom named timeline style. @param name - The name of the style to remove.

duplicate(name: string): Promise<string>;

Duplicate an existing named timeline style. @param name - The name of the style to duplicate. @returns The name of the newly created copy.