NetNewsWire/Mac/MainWindow/Sidebar/PasteboardFolder.swift

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//
// FolderPasteboardWriter.swift
// NetNewsWire
//
// Created by Brent Simmons on 2/11/18.
// Copyright © 2018 Ranchero Software. All rights reserved.
//
import AppKit
import Account
import RSCore
typealias PasteboardFolderDictionary = [String: String]
struct PasteboardFolder: Hashable {
private struct Key {
static let name = "name"
// Internal
static let folderID = "folderID"
static let accountID = "accountID"
}
let name: String
let folderID: String?
let accountID: String?
init(name: String, folderID: String?, accountID: String?) {
self.name = name
self.folderID = folderID
self.accountID = accountID
}
// MARK: - Reading
init?(dictionary: PasteboardFolderDictionary) {
guard let name = dictionary[Key.name] else {
return nil
}
let folderID = dictionary[Key.folderID]
let accountID = dictionary[Key.accountID]
self.init(name: name, folderID: folderID, accountID: accountID)
}
init?(pasteboardItem: NSPasteboardItem) {
var pasteboardType: NSPasteboard.PasteboardType?
if pasteboardItem.types.contains(FolderPasteboardWriter.folderUTIInternalType) {
pasteboardType = FolderPasteboardWriter.folderUTIInternalType
}
if let foundType = pasteboardType {
if let folderDictionary = pasteboardItem.propertyList(forType: foundType) as? PasteboardFeedDictionary {
self.init(dictionary: folderDictionary)
return
}
}
return nil
}
static func pasteboardFolders(with pasteboard: NSPasteboard) -> Set<PasteboardFolder>? {
guard let items = pasteboard.pasteboardItems else {
return nil
}
let folders = items.compactMap { PasteboardFolder(pasteboardItem: $0) }
return folders.isEmpty ? nil : Set(folders)
}
// MARK: - Writing
func internalDictionary() -> PasteboardFolderDictionary {
var d = PasteboardFeedDictionary()
d[PasteboardFolder.Key.name] = name
if let folderID = folderID {
d[PasteboardFolder.Key.folderID] = folderID
}
if let accountID = accountID {
d[PasteboardFolder.Key.accountID] = accountID
}
return d
}
}
extension Folder: PasteboardWriterOwner {
public var pasteboardWriter: NSPasteboardWriting {
return FolderPasteboardWriter(folder: self)
}
}
@objc final class FolderPasteboardWriter: NSObject, NSPasteboardWriting {
private let folder: Folder
static let folderUTIInternal = "com.ranchero.NetNewsWire-Evergreen.internal.folder"
static let folderUTIInternalType = NSPasteboard.PasteboardType(rawValue: folderUTIInternal)
init(folder: Folder) {
self.folder = folder
}
// MARK: - NSPasteboardWriting
func writableTypes(for pasteboard: NSPasteboard) -> [NSPasteboard.PasteboardType] {
return [.string, FolderPasteboardWriter.folderUTIInternalType]
}
func pasteboardPropertyList(forType type: NSPasteboard.PasteboardType) -> Any? {
let plist: Any?
switch type {
case .string:
plist = folder.nameForDisplay
case FolderPasteboardWriter.folderUTIInternalType:
plist = internalDictionary
default:
plist = nil
}
return plist
}
}
private extension FolderPasteboardWriter {
var pasteboardFolder: PasteboardFolder {
return PasteboardFolder(name: folder.name ?? "", folderID: String(folder.folderID), accountID: folder.account?.accountID)
}
var internalDictionary: PasteboardFeedDictionary {
return pasteboardFolder.internalDictionary()
}
}