import { ToolbarSlot } from './ToolbarRows';
import { DynamicToolbarAction, ResolveToolbarActionWidth } from './planToolbarActions';
export type ToolbarLayoutMode = 'compact' | 'stacked' | 'selection-split' | 'inline';
export interface ToolbarLayoutResolution {
    mode: ToolbarLayoutMode;
    filterIconOnly: boolean;
    trailingIconOnly: boolean;
}
/**
 * Real, rendered widths measured by DynamicToolbar. Every field is optional:
 * a missing value falls back to the heuristic estimate, so layout planning
 * works on first render and degrades gracefully.
 */
export interface MeasuredToolbarWidths {
    titleWidthPx?: number;
    leadingUtilityWidthPx?: number;
    searchWidthPx?: number;
    filterLabelWidthPx?: number;
    filterIconWidthPx?: number;
    trailingLabelWidthPx?: number;
    trailingIconWidthPx?: number;
    selectionIndicatorWidthPx?: number;
    moreButtonWidthPx?: number;
    actionWidthPx?: ResolveToolbarActionWidth;
}
export declare function estimateTitleAreaWidth(title?: ToolbarSlot): number;
/**
 * Width reserved for the title area. Prefers the measured natural width
 * (capped — the title is allowed to truncate rather than dominate layout),
 * falling back to the character-count estimate before measurement.
 */
export declare function resolveTitleAreaWidth(title: ToolbarSlot | undefined, measuredTitleWidthPx?: number): number;
export declare function estimateActionsStripWidth(actions: DynamicToolbarAction[], showLabel: boolean, resolveActionWidth?: ResolveToolbarActionWidth): number;
/**
 * Bulk zone width as it actually renders: the top-priority actions inline
 * (labels always shown) up to `maxVisibleBulkActions`, plus the More trigger
 * when the remaining actions overflow into the menu.
 */
export declare function estimateBulkStripWidth(bulkActions: DynamicToolbarAction[], maxVisibleBulkActions: number, resolveActionWidth?: ResolveToolbarActionWidth): number;
export declare function resolveReserveBulkActionsWidthPx(reserveBulkActionsWidthPx: number, bulkActions: DynamicToolbarAction[], resolveActionWidth?: ResolveToolbarActionWidth, maxVisibleBulkActions?: number): number;
export interface EstimateUtilitiesWidthOptions {
    hasLeadingUtility: boolean;
    hasFilter: boolean;
    hasSearch: boolean;
    hasTrailingUtility: boolean;
    showPageActions: boolean;
    showBulkActions: boolean;
    filterIconOnly: boolean;
    trailingIconOnly: boolean;
    pageActionsWidthPx: number;
    bulkActionsWidthPx: number;
    /** §4/§7: search before filter on utility row */
    searchBeforeFilter?: boolean;
    measured?: MeasuredToolbarWidths;
}
export declare function estimateUtilitiesClusterWidth(options: EstimateUtilitiesWidthOptions): number;
export declare function resolveToolbarLayout(options: {
    containerWidth: number;
    isMobile: boolean;
    isSelectionMode: boolean;
    compactBreakpointPx: number;
    reserveBulkActionsWidthPx: number;
    title?: ToolbarSlot;
    hasLeadingUtility: boolean;
    hasFilter: boolean;
    hasSearch: boolean;
    hasTrailingUtility: boolean;
    pageActions: DynamicToolbarAction[];
    bulkActions: DynamicToolbarAction[];
    maxVisibleBulkActions?: number;
    measured?: MeasuredToolbarWidths;
}): ToolbarLayoutResolution;
/** Width budget for `planToolbarActions` based on resolved layout. */
export declare function resolvePageActionsAvailableWidth(options: {
    layoutMode: ToolbarLayoutMode;
    containerWidth: number;
    titleWidth: number;
    filterIconOnly: boolean;
    trailingIconOnly: boolean;
    hasFilter: boolean;
    hasSearch: boolean;
    hasLeadingUtility: boolean;
    hasTrailingUtility: boolean;
    reserveBulkActionsWidthPx: number;
    measured?: MeasuredToolbarWidths;
}): number;
export declare function resolveBulkActionsAvailableWidth(options: {
    layoutMode: ToolbarLayoutMode;
    containerWidth: number;
    titleWidth: number;
    filterIconOnly: boolean;
    hasFilter: boolean;
    hasSearch: boolean;
    measured?: MeasuredToolbarWidths;
}): number;