import { AcApContext } from '../../app';
import { AcEdCommand } from '../../editor';
/**
 * AutoCAD-like `LAYUNISO` command.
 *
 * The command restores the layer state captured by the previous `LAYISO`.
 * It only reverts properties that still match the value applied by `LAYISO`,
 * so layer edits made after isolation are retained.
 */
export declare class AcApLayerUnisoCmd extends AcEdCommand {
    /**
     * Creates a write-enabled `LAYUNISO` command instance.
     */
    constructor();
    /**
     * Restores the previous `LAYISO` layer state when available.
     *
     * @param context - Active application context used to update layer states.
     * @returns Resolves after restoration is attempted.
     */
    execute(context: AcApContext): Promise<void>;
    /**
     * Restores tracked layer flags that were not changed after `LAYISO`.
     *
     * @param layer - Layer to restore.
     * @param snapshot - Before/after state captured for this layer by `LAYISO`.
     * @returns `true` if any tracked flag was restored.
     */
    private restoreLayerIfUnchanged;
    /**
     * Sets or clears the frozen bit while preserving other layer flags.
     *
     * @param layer - Target layer table record.
     * @param frozen - Whether the layer should be marked frozen.
     */
    private setLayerFrozen;
    /**
     * Sets or clears the locked bit while preserving other layer flags.
     *
     * @param layer - Target layer table record.
     * @param locked - Whether the layer should be marked locked.
     */
    private setLayerLocked;
    /**
     * Sends a localized status message through the command-line output.
     *
     * @param message - Text to display to the user.
     * @param type - Visual severity mapped to command-line message styles.
     */
    private notify;
}
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