VPN v2

main/Extensions/TableView.swift

@@ -0,0 +1,93 @@
+import UIKit
+
+extension GroupedDomain {
+	var detailCellText: String { get {
+		return blocked > 0
+		? "\(dateTimeFormat.string(from: lastModified))   —   \(blocked)/\(total) blocked"
+		: "\(dateTimeFormat.string(from: lastModified))   —   \(total)"
+		}
+	}
+}
+
+extension FilterOptions {
+	func tableRowImage() -> UIImage? {
+		let blocked = contains(.blocked)
+		let ignored = contains(.ignored)
+		if blocked { return UIImage(named: ignored ? "block_ignore" : "shield-x") }
+		if ignored { return UIImage(named: "quicklook-not") }
+		return nil
+	}
+}
+
+extension NSMutableAttributedString {
+	func withColor(_ color: UIColor, fromBack: Int) -> Self {
+		let l = length - fromBack
+		let r = (l < 0) ? NSMakeRange(0, length) : NSMakeRange(l, fromBack)
+		self.addAttribute(.foregroundColor, value: color, range: r)
+		return self
+	}
+}
+
+// MARK: Pull-to-Refresh
+
+extension UIRefreshControl {
+	convenience init(call: Selector, on: UITableViewController) {
+		self.init()
+		addTarget(on, action: call, for: .valueChanged)
+		addTarget(self, action: #selector(endRefreshing), for: .valueChanged)
+	}
+	
+}
+
+// MARK: - Incremental Update Delegate
+
+protocol IncrementalDataSourceUpdate : UITableViewController {
+	var dataSource: [GroupedDomain] { get set }
+}
+
+extension IncrementalDataSourceUpdate {
+	func ifDisplayed(_ block: () -> Void) {
+		DispatchQueue.main.sync {
+			if self.tableView.window?.isKeyWindow ?? false {
+				block()
+				// TODO: custom handling if cell is being edited
+			} else {
+				self.tableView.reloadData()
+			}
+		}
+	}
+	func insertRow(_ obj: GroupedDomain, at index: Int) {
+		dataSource.insert(obj, at: index)
+		ifDisplayed {
+			self.tableView.insertRows(at: [IndexPath(row: index, section: 0)], with: .left)
+		}
+	}
+	func moveRow(_ obj: GroupedDomain, from: Int, to: Int) {
+		dataSource.remove(at: from)
+		dataSource.insert(obj, at: to)
+		ifDisplayed {
+			let source = IndexPath(row: from, section: 0)
+			let cell = self.tableView.cellForRow(at: source)
+			cell?.detailTextLabel?.text = obj.detailCellText
+			self.tableView.moveRow(at: source, to: IndexPath(row: to, section: 0))
+		}
+	}
+	func replaceRow(_ obj: GroupedDomain, at index: Int) {
+		dataSource[index] = obj
+		ifDisplayed {
+			self.tableView.reloadRows(at: [IndexPath(row: index, section: 0)], with: .automatic)
+		}
+	}
+	func deleteRow(at index: Int) {
+		dataSource.remove(at: index)
+		ifDisplayed {
+			self.tableView.deleteRows(at: [IndexPath(row: index, section: 0)], with: .automatic)
+		}
+	}
+	func replaceData(with newData: [GroupedDomain]) {
+		dataSource = newData
+		ifDisplayed {
+			self.tableView.reloadData()
+		}
+	}
+}