1  import { HasPinAbility, IFileInfo } from '../../MetaData';
 2  import { IPinItem } from './IPinItem';
 3  import { Signal } from '@preact/signals-core';
 4  
 5  export const IPinManagerServiceSymbol = Symbol.for('IPinManagerService');
 6  
 7  export enum PinStatus {
 8  	UnPinned,
 9  	Pinned,
10  	Working,
11  }
12  
13  /**
14   * Manages pinned items.
15   */
16  export interface IPinManagerService {
17  	/**
18  	 * Checks whether an item is pinned or not.
19  	 * @param item The item to check.
20  	 */
21  	isPinned(item: HasPinAbility): PinStatus;
22  
23  	/**
24  	 * Adds a pin to an item.
25  	 * @param item the item to pin.
26  	 */
27  	addPin(item: HasPinAbility): Promise<void>;
28  
29  	/**
30  	 * Removes a pin from an item.
31  	 * @param item the item to remove the pin from.
32  	 */
33  	removePin(item: HasPinAbility): Promise<void>;
34  
35  	/**
36  	 * List all currently pinned items.
37  	 */
38  	listPins(): IPinItem[];
39  
40  	/**
41  	 * Resolves a {@link IPinItem} to its original {@link IFileInfo}.
42  	 * @param item The item to resolve.
43  	 * @returns The resolved {@link IFileInfo} or undefined.
44  	 */
45  	resolvePin(item: IPinItem): IFileInfo | undefined;
46  
47  	/**
48  	 * A list of all currently pinned items.
49  	 */
50  	pins: Signal<IPinItem[]>;
51  }