import { Directory, FileEntry, Root } from 'aspen-core';
import { IDisposable } from 'notificar';
import { Decoration } from './Decoration';
import { ClasslistComposite } from './DecorationComposite';
/**
 * NOTES FOR CONTRIBUTORS:
 * - A Target is a directory or a file entry
 * - A Target is a DirectTarget when it is explicitly listed in a Decoration's application or negation list
 * - As opposed to DirectTarget, general targets are implicit targets when they simply inherit from their parent's inhertiable DecorationComposite
 * - All general targets "point to" their first parent's `inheritable` composite see docs for `IDecorationMeta.inheritable`
 */
export declare class DecorationsManager implements IDisposable {
    private decorations;
    private decorationsMeta;
    private disposables;
    private disposed;
    constructor(root: Root);
    /**
     * Permanently disengages the decoration system from the tree
     */
    dispose(): void;
    /**
     * Adds the given `Decoration` to the tree
     *
     * `Decoration`s have no effect unless they are targetted at item(s). Use `Decoration#addTarget` to have them render in the filetree
     */
    addDecoration(decoration: Decoration): void;
    /**
     * Removes a `Decoration` from the tree
     *
     * Note that this "removes" entire `Decoration` from tree but the said `Decoration`'s targets are still left intact.
     *
     * Calling `DecorationManager#addDecoration` with the same `Decoration` will undo the removal if the targets are left unchanged.
     */
    removeDecoration(decoration: Decoration): void;
    /**
     * Returns resolved decorations for given item
     *
     * Resolution includes taking inheritances into consideration, along with any negations that may void some or all of inheritances
     */
    getDecorations(item: FileEntry | Directory): ClasslistComposite;
    private targetDecoration;
    private unTargetDecoration;
    private negateDecoration;
    private unNegateDecoration;
    private switchParent;
}