Make animations individually selectable and no longer animate navigation selections. Issue #1439

iOS/UIKit Extensions/Animations.swift

@@ -0,0 +1,27 @@
+//
+//  Animations.swift
+//  NetNewsWire-iOS
+//
+//  Created by Maurice Parker on 1/27/20.
+//  Copyright © 2020 Ranchero Software. All rights reserved.
+//
+
+import Foundation
+
+/// Used to select which animations should be performed
+public struct Animations: OptionSet {
+	
+	/// Select and deslections will be animated.
+	public static let select = Animations(rawValue: 1)
+	
+	/// Scrolling will be animated
+	public static let scroll = Animations(rawValue: 2)
+	
+	/// Pushing and popping navigation view controllers will be animated
+	public static let navigation = Animations(rawValue: 4)
+	
+	public let rawValue: Int
+	public init(rawValue: Int) {
+		self.rawValue = rawValue
+	}
+}

iOS/UIKit Extensions/UITableView-Extensions.swift

@@ -0,0 +1,37 @@
+//
+//  UITableView-Extensions.swift
+//  RSCoreiOS
+//
+//  Created by Maurice Parker on 9/6/19.
+//  Copyright © 2019 Ranchero Software, LLC. All rights reserved.
+//
+
+import UIKit
+
+extension UITableView {
+	
+	/**
+	Selects a row and scrolls it to the middle if it is not visible
+	*/
+	public func selectRowAndScrollIfNotVisible(at indexPath: IndexPath, animations: Animations) {
+		selectRow(at: indexPath, animated: animations.contains(.select), scrollPosition: .none)
+
+		if let visibleIndexPaths = indexPathsForRows(in: safeAreaLayoutGuide.layoutFrame) {
+			if !(visibleIndexPaths.contains(indexPath) && cellCompletelyVisable(indexPath)) {
+				selectRow(at: indexPath, animated: animations.contains(.scroll), scrollPosition: .middle)
+			}
+		}
+	}
+	
+	func cellCompletelyVisable(_ indexPath: IndexPath) -> Bool {
+		let rect = rectForRow(at: indexPath)
+		return safeAreaLayoutGuide.layoutFrame.contains(rect)
+	}
+	
+	public func middleVisibleRow() -> IndexPath? {
+		if let visibleIndexPaths = indexPathsForRows(in: safeAreaLayoutGuide.layoutFrame), visibleIndexPaths.count > 2 {
+			return visibleIndexPaths[visibleIndexPaths.count / 2]
+		}
+		return nil
+	}
+}