Dactyloidae iOS initial commit

mobile/ios/Storage/RecentlyClosedTabs.swift

@@ -0,0 +1,76 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+import Foundation
+import Shared
+
+open class ClosedTabsStore {
+    let prefs: Prefs
+
+    lazy open var tabs: [ClosedTab] = {
+        guard let tabsArray: Data = self.prefs.objectForKey("recentlyClosedTabs") as Any? as? Data,
+              let unarchivedArray = NSKeyedUnarchiver.unarchiveObject(with: tabsArray) as? [ClosedTab] else {
+            return []
+        }
+        return unarchivedArray
+    }()
+
+    public init(prefs: Prefs) {
+        self.prefs = prefs
+    }
+
+    open func addTab(_ url: URL, title: String?, faviconURL: String?) {
+        let recentlyClosedTab = ClosedTab(url: url, title: title ?? "", faviconURL: faviconURL ?? "")
+        tabs.insert(recentlyClosedTab, at: 0)
+        if tabs.count > 5 {
+            tabs.removeLast()
+        }
+        let archivedTabsArray = NSKeyedArchiver.archivedData(withRootObject: tabs)
+        prefs.setObject(archivedTabsArray, forKey: "recentlyClosedTabs")
+    }
+
+    open func clearTabs() {
+        prefs.removeObjectForKey("recentlyClosedTabs")
+        tabs = []
+    }
+}
+
+open class ClosedTab: NSObject, NSCoding {
+    open let url: URL
+    open let title: String?
+    open let faviconURL: String?
+
+    var jsonDictionary: [String: Any] {
+        let title = (self.title ?? "")
+        let faviconURL = (self.faviconURL ?? "")
+        let json: [String: Any] = ["title": title, "url": url, "faviconURL": faviconURL]
+        return json
+    }
+
+    init(url: URL, title: String?, faviconURL: String?) {
+        assert(Thread.isMainThread)
+        self.title = title
+        self.url = url
+        self.faviconURL = faviconURL
+        super.init()
+    }
+
+    required convenience public init?(coder: NSCoder) {
+        guard let url = coder.decodeObject(forKey: "url") as? URL,
+              let faviconURL = coder.decodeObject(forKey: "faviconURL") as? String,
+              let title = coder.decodeObject(forKey: "title") as? String else { return nil }
+
+        self.init(
+            url: url,
+            title: title,
+            faviconURL: faviconURL
+        )
+    }
+
+    open func encode(with coder: NSCoder) {
+        coder.encode(url, forKey: "url")
+        coder.encode(faviconURL, forKey: "faviconURL")
+        coder.encode(title, forKey: "title")
+    }
+}