Function getRelativeLocation

packages/dockview-core/src/gridview/gridview.ts:158–179

(
    rootOrientation: Orientation,
    location: number[],
    direction: Position
)

}

export function getRelativeLocation(
    rootOrientation: Orientation,
    location: number[],
    direction: Position
): number[] {
    const orientation = getLocationOrientation(rootOrientation, location);
    const directionOrientation = getDirectionOrientation(direction);

    if (orientation === directionOrientation) {
        const [rest, _index] = tail(location);
        let index = _index;

        if (direction === 'right' || direction === 'bottom') {
            index += 1;
        }

        return [...rest, index];
    } else {
        const index = direction === 'right' || direction === 'bottom' ? 1 : 0;
        return [...location, index];
    }
}

export function getDirectionOrientation(direction: Position): Orientation {
    return direction === 'top' || direction === 'bottom'