/**
 * The **Columns Manager** launcher — an icon button in the tools strip that
 * opens the grid's Column Chooser.
 *
 * Deliberately thin. It owns a button and nothing else: the dialog, the
 * show/hide behaviour and the visibility writes all belong to
 * {@link import('./column-chooser').ColumnChooser}, which the column menu's
 * "Column Chooser…" item already opens. Reusing that component rather than
 * growing a second one is the whole point — two dialogs doing the same job
 * drift, and a user who hid a column from the toolbar would find the header
 * menu disagreeing about it.
 *
 * Pure UI, like every other launcher: it holds no grid state and mutates
 * nothing directly, delegating the open to {@link ColumnsManagerDeps.onOpen}.
 * Every visual is class-driven — all colours, spacing, radii and typography
 * come from theme CSS variables (see `toolbar.css.ts`); the component sets no
 * inline styles.
 *
 * @packageDocumentation
 */
import type { IconRenderer } from '../icons/icon-renderer';
import type { ColumnsManagerConfig } from '../types/toolbar.types';
/** Collaborators the {@link ColumnsManagerLauncher} needs, injected as a DI bag. */
export interface ColumnsManagerDeps {
    /** Renders themed, registry-backed icons. */
    readonly iconRenderer: IconRenderer;
    /**
     * Opens the Column Chooser. Wired by `GridRenderer` to the same chooser
     * instance the header menu uses, so both entry points share one dialog.
     */
    readonly onOpen: () => void;
}
/**
 * Icon button that opens the Column Chooser.
 *
 * Opt-in via `GridOptions.columnsManager`; mounted by
 * {@link import('./grid-renderer').GridRenderer} into the tools strip's right
 * region, where CSS `order` places it ahead of the Filters funnel.
 */
export declare class ColumnsManagerLauncher {
    private readonly deps;
    private launcherEl;
    constructor(deps: ColumnsManagerDeps);
    /**
     * Builds the button and docks it into the tools strip. Call once per grid.
     *
     * @param toolsRightEl - The `.pg-grid__tools__right` region, so the launcher
     *   lays out beside the other launchers instead of stacking.
     * @param config - Resolved `GridOptions.columnsManager`; only the presentation
     *   fields are read, since a disabled feature never reaches this call.
     */
    mount(toolsRightEl: HTMLElement, config: ColumnsManagerConfig): void;
    /** Opens the Column Chooser, as a click would. */
    open(): void;
    /** Removes the button. The dialog is owned elsewhere and is not touched. */
    destroy(): void;
    private buildLauncher;
}
/**
 * Normalises `GridOptions.columnsManager` into a config object, or `null` when
 * the feature is off.
 *
 * One place for the shorthand, so `true`, `{ enabled: true }` and an explicit
 * `{ enabled: false }` cannot be read three different ways by three callers.
 *
 * @param option - The raw option, in any of its accepted forms.
 * @returns The resolved config, or `null` when the launcher must not be built.
 */
export declare function resolveColumnsManagerConfig(option: boolean | ColumnsManagerConfig | undefined): ColumnsManagerConfig | null;
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