iOS: Migrate to Swift

This is in preparation for moving to SwiftUI at some point.

iOS/MainViewController.swift

@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2016 - 2019 Jonathan Schleifer <js@heap.zone>
+ *
+ * https://heap.zone/git/scrypt-pwgen.git
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice is present in all copies.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+import UIKit
+import ObjFW
+
+class MainViewController: UIViewController, UISearchBarDelegate,
+                          UITableViewDelegate, UITableViewDataSource {
+    public var sites = OFArray<OFString>()
+    public var siteStorage = SiteStorage()
+    @IBOutlet var searchBar: UISearchBar?
+    @IBOutlet var tableView: UITableView?
+
+    override func viewDidLoad() {
+        super.viewDidLoad()
+
+        self.reset()
+    }
+
+    func reset() {
+        searchBar?.text = ""
+        sites = siteStorage.sites(withFilter: nil)
+        tableView?.reloadData()
+    }
+
+    func tableView(_ tableView: UITableView,
+                   numberOfRowsInSection section: Int) -> Int {
+        return sites.count
+    }
+
+    func tableView(_ tableView: UITableView,
+                   cellForRowAt indexPath: IndexPath) -> UITableViewCell {
+        let cell = tableView.dequeueReusableCell(withIdentifier: "site") ??
+            UITableViewCell(style: .default, reuseIdentifier: "site")
+        cell.textLabel?.text = sites[indexPath.row].nsObject
+        return cell
+    }
+
+    func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
+        sites = siteStorage.sites(withFilter: searchBar.text?.ofObject)
+        tableView?.reloadData()
+    }
+
+    func tableView(_ tableView: UITableView,
+                   didSelectRowAt indexPath: IndexPath) {
+        self.performSegue(withIdentifier: "showDetails", sender: self)
+    }
+
+    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
+        switch segue.identifier {
+        case .some("addSite"):
+            let destination = segue.destination as? AddSiteController
+            destination?.mainViewController = self
+        case .some("showDetails"):
+            let destination = segue.destination as? ShowDetailsController
+            destination?.mainViewController = self
+        default:
+            break
+        }
+    }
+}