NetNewsWire/Frameworks/Account/Container.swift

157 lines
3.2 KiB
Swift
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

//
// Container.swift
// NetNewsWire
//
// Created by Brent Simmons on 4/17/16.
// Copyright © 2016 Ranchero Software, LLC. All rights reserved.
//
import Foundation
import RSCore
import Articles
extension Notification.Name {
public static let ChildrenDidChange = Notification.Name("ChildrenDidChange")
}
public protocol Container: class {
var account: Account? { get }
var topLevelFeeds: Set<Feed> { get set }
var folders: Set<Folder>? { get set }
func hasAtLeastOneFeed() -> Bool
func objectIsChild(_ object: AnyObject) -> Bool
func hasChildFolder(with: String) -> Bool
func childFolder(with: String) -> Folder?
func removeFeed(_ feed: Feed)
func addFeed(_ feed: Feed)
//Recursive  checks subfolders
func flattenedFeeds() -> Set<Feed>
func has(_ feed: Feed) -> Bool
func hasFeed(with feedID: String) -> Bool
func hasFeed(withURL url: String) -> Bool
func existingFeed(with feedID: String) -> Feed?
func existingFeed(withURL url: String) -> Feed?
func existingFolder(with name: String) -> Folder?
func existingFolder(withID: Int) -> Folder?
func postChildrenDidChangeNotification()
}
public extension Container {
func hasAtLeastOneFeed() -> Bool {
return topLevelFeeds.count > 0
}
func hasChildFolder(with name: String) -> Bool {
return childFolder(with: name) != nil
}
func childFolder(with name: String) -> Folder? {
guard let folders = folders else {
return nil
}
for folder in folders {
if folder.name == name {
return folder
}
}
return nil
}
func objectIsChild(_ object: AnyObject) -> Bool {
if let feed = object as? Feed {
return topLevelFeeds.contains(feed)
}
if let folder = object as? Folder {
return folders?.contains(folder) ?? false
}
return false
}
func flattenedFeeds() -> Set<Feed> {
var feeds = Set<Feed>()
feeds.formUnion(topLevelFeeds)
if let folders = folders {
for folder in folders {
feeds.formUnion(folder.flattenedFeeds())
}
}
return feeds
}
func hasFeed(with feedID: String) -> Bool {
return existingFeed(with: feedID) != nil
}
func hasFeed(withURL url: String) -> Bool {
return existingFeed(withURL: url) != nil
}
func has(_ feed: Feed) -> Bool {
return flattenedFeeds().contains(feed)
}
func existingFeed(with feedID: String) -> Feed? {
for feed in flattenedFeeds() {
if feed.feedID == feedID {
return feed
}
}
return nil
}
func existingFeed(withURL url: String) -> Feed? {
for feed in flattenedFeeds() {
if feed.url == url {
return feed
}
}
return nil
}
func existingFolder(with name: String) -> Folder? {
guard let folders = folders else {
return nil
}
for folder in folders {
if folder.name == name {
return folder
}
if let subFolder = folder.existingFolder(with: name) {
return subFolder
}
}
return nil
}
func existingFolder(withID folderID: Int) -> Folder? {
guard let folders = folders else {
return nil
}
for folder in folders {
if folder.folderID == folderID {
return folder
}
if let subFolder = folder.existingFolder(withID: folderID) {
return subFolder
}
}
return nil
}
func postChildrenDidChangeNotification() {
NotificationCenter.default.post(name: .ChildrenDidChange, object: self)
}
}