/**
 * Prefix for CSS class names
 */
export declare const prefix = "ids-form-layout";
/**
 * Tracks, per child element, the set of attribute names a given propagator
 * (form-layout / group / inline) has pushed onto it. This lets us tell apart
 * values the user authored directly on a child (which we must never touch)
 * from values we inherited down — so that when a parent setting is removed or
 * changed, we can correctly clear/update the inherited value on the child.
 */
export type PropagatedKeys = WeakMap<HTMLElement, Set<string>>;
/**
 * Tag names of form-layout sub-containers that manage their own descendants.
 * Propagation stops at these boundaries so each container owns its children.
 */
export declare const NESTED_LAYOUT_TAGS: string[];
/**
 * Tag names of supported child form controls.
 */
export declare const FORM_CONTROL_TAGS: string[];
/**
 * Collect the direct propagation targets for a form-layout container.
 *
 * Walks descendants but does NOT descend into nested form-layout containers
 * (group / inline) — those are returned as targets themselves and are
 * responsible for propagating to their own children. This prevents an outer
 * container from reaching into (and clobbering) the controls a nested wrapper
 * manages, e.g. applying `validate` to inputs inside an inline group.
 * @param {HTMLElement} root the container whose children to collect
 * @returns {HTMLElement[]} the elements to propagate settings to
 */
export declare function collectPropagationTargets(root: HTMLElement): HTMLElement[];
/**
 * Synchronize a single inherited setting from a parent onto a child.
 *
 * Behavior:
 * - If the child has the attribute and we did NOT propagate it, the value is
 *   user-authored — leave it untouched (child always wins).
 * - If the parent has a value, set it on the child (via the property setter)
 *   and remember that we own this attribute on that child.
 * - If the parent has no value but we previously propagated one, clear it
 *   (set the property to `null`/`false`) and forget our ownership.
 * @param {HTMLElement} child the child element to update
 * @param {string} attr the observed attribute name that backs the property
 * @param {string} prop the property name to assign on the child
 * @param {unknown} parentValue the resolved value from the parent (falsy = unset)
 * @param {PropagatedKeys} tracker per-propagator map of propagated attribute keys
 * @param {boolean} isBoolean when true, clearing assigns `false` instead of `null`
 */
export declare function syncSettingToChild(child: HTMLElement, attr: string, prop: string, parentValue: unknown, tracker: PropagatedKeys, isBoolean?: boolean): void;
/**
 * Observed attributes for IdsFormLayout
 */
export declare const FORM_LAYOUT_ATTRIBUTES: string[];
/**
 * Label position type
 */
export type IdsFormLayoutLabelPosition = 'top' | 'inline-start' | 'inline-end' | null;
/**
 * Valid label positions
 */
export declare const LABEL_POSITIONS: Array<IdsFormLayoutLabelPosition>;
/**
 * Label wrap type
 */
export type IdsFormLayoutLabelWrap = 'ellipsis' | 'wrap' | 'ellipsis-no-stretch' | 'wrap-no-stretch' | null;
/**
 * Valid label wraps
 */
export declare const LABEL_WRAPS: Array<IdsFormLayoutLabelWrap>;
/**
 * Label break type (controls how label and value behave when space is constrained)
 */
export type IdsFormLayoutLabelBreak = 'shrink-value' | 'shrink-label' | 'break' | null;
/**
 * Valid label break values
 */
export declare const LABEL_BREAKS: Array<IdsFormLayoutLabelBreak>;
/**
 * Label vertical alignment type
 */
export type IdsFormLayoutLabelAlignY = 'baseline' | 'center' | 'flex-start' | 'flex-end' | 'stretch' | null;
/**
 * Valid label vertical alignments
 */
export declare const LABEL_ALIGN_Y_VALUES: Array<IdsFormLayoutLabelAlignY>;
/**
 * Label text alignment type
 */
export type IdsFormLayoutLabelAlignment = 'start' | 'end' | null;
/**
 * Valid label text alignments
 */
export declare const LABEL_ALIGNMENTS: Array<IdsFormLayoutLabelAlignment>;
/**
 * Gap type values
 */
export type IdsFormLayoutGapType = undefined | 'none' | '2xs' | 'xs' | 'sm' | 'md' | 'lg' | 'xl';
/**
 * Valid gap types array
 */
export declare const GAP_TYPES: Array<IdsFormLayoutGapType>;
/**
 * Maximum number of columns supported
 */
export declare const MAX_COLS = 12;
/**
 * Field height type
 */
export type IdsFormLayoutFieldHeight = 'xxs' | 'xs' | 'sm' | 'md' | 'lg' | null;
/**
 * Valid field heights
 */
export declare const FIELD_HEIGHTS: Array<IdsFormLayoutFieldHeight>;
/**
 * Margin block end / field spacing type (matches IdsInput MarginBlockEndKey)
 */
export type IdsFormLayoutFieldSpacing = 'none' | '4xs' | '3xs' | '2xs' | 'xs' | 'sm' | 'md' | 'lg' | 'xl' | '2xl' | '3xl' | '4xl' | null;
/**
 * Valid field spacing values
 */
export declare const FIELD_SPACING_VALUES: Array<IdsFormLayoutFieldSpacing>;
/**
 * Align items type for grid alignment
 */
export type IdsFormLayoutAlignItems = 'anchor-center' | 'center' | 'baseline' | 'end' | 'start' | null;
/**
 * Valid align items values
 */
export declare const ALIGN_ITEMS_VALUES: Array<IdsFormLayoutAlignItems>;
/**
 * Size type for form controls (matches IdsInput sizes)
 */
export type IdsFormLayoutSize = 'xs' | 'sm' | 'mm' | 'md' | 'lg' | 'full' | null;
/**
 * Valid size values
 */
export declare const SIZE_VALUES: Array<IdsFormLayoutSize>;
/**
 * Observed attributes for IdsFormLayoutGroup
 */
export declare const FORM_LAYOUT_GROUP_ATTRIBUTES: string[];
/**
 * Observed attributes for IdsFormLayoutInline
 */
export declare const FORM_LAYOUT_INLINE_ATTRIBUTES: string[];