import { AcTrLayoutView } from './AcTrLayoutView';
import { AcTrScene } from './AcTrScene';
/**
 * Manages multiple layout views and coordinates active layout switching.
 *
 * This class serves as a central coordinator for all layout views in the CAD viewer.
 * It handles:
 * - Managing a collection of layout views indexed by their block table record IDs
 * - Tracking and switching the active layout
 * - Coordinating rendering operations across layout views
 * - Managing view lifecycle (resize, enable/disable)
 *
 * The layout view manager ensures that only one layout is active at a time while
 * maintaining the state of all layouts for quick switching. It provides a unified
 * interface for layout operations regardless of which specific layout is active.
 *
 * @example
 * ```typescript
 * const manager = new AcTrLayoutViewManager();
 * manager.add(layoutView);
 * manager.activeLayoutBtrId = 'layout1';
 * manager.render(scene);
 * ```
 */
export declare class AcTrLayoutViewManager {
    /** The block table record ID of the currently active layout */
    private _activeLayoutBtrId;
    /** Map of layout views indexed by their block table record IDs */
    private _layoutViews;
    /**
     * Creates a new layout view manager instance.
     * Initializes with no active layout and an empty collection of views.
     */
    constructor();
    /**
     * The block table record id associated with the active layout.
     * Setting this property switches the active layout and enables/disables
     * the appropriate layout views.
     */
    get activeLayoutBtrId(): string;
    set activeLayoutBtrId(value: string);
    /**
     * The active layout view.
     * Returns the layout view corresponding to the currently active layout,
     * or undefined if no layout is active or the active layout doesn't exist.
     */
    get activeLayoutView(): AcTrLayoutView | undefined;
    /**
     * Return true if the layout view manager contains one layout view associated with the specified block
     * table record id. Otherwise it returns false.
     *
     * @param layoutBtrId - Input the block table record id associated with the layout view
     * @returns Return true if the layout view manager contains one layout view associated with the specified
     * block table record id. Otherwise it returns false.
     */
    has(layoutBtrId: string): boolean;
    /**
     * Get the layout view by the block table record id associated with the layout.
     *
     * @param layoutBtrId - Input the id of the block table record associated the layout
     * @returns Return the layout view by the block table record id associated with the layout,
     * or undefined if not found
     */
    getAt(layoutBtrId: string): AcTrLayoutView | undefined;
    /**
     * Resize all of layout views managed by layout view manager.
     * This is typically called when the viewport or container size changes
     * and all layouts need to update their dimensions.
     *
     * @param width - Input new width of the layout view in pixels
     * @param height - Input new height of the layout view in pixels
     */
    resize(width: number, height: number): void;
    /**
     * Adds a layout view to the manager.
     * The layout view is indexed by its block table record ID for fast lookup.
     *
     * @param layoutView - The layout view to add to the manager
     */
    add(layoutView: AcTrLayoutView): void;
    /**
     * Render the specified scene in the current layout view.
     * Only renders the currently active layout view, if one is set.
     *
     * @param scene - Input the scene to render
     */
    render(scene: AcTrScene): void;
}
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