Rename MainFeed and MainTimeline folders to Sidebar and Timeline.

iOS/MainWindow/Sidebar/ShadowTableChanges.swift

@@ -0,0 +1,68 @@
+//
+//  ShadowTableChanges.swift
+//  NetNewsWire-iOS
+//
+//  Created by Maurice Parker on 10/20/21.
+//  Copyright © 2021 Ranchero Software. All rights reserved.
+//
+
+import Foundation
+
+struct ShadowTableChanges {
+
+	struct Move: Hashable {
+		var from: Int
+		var to: Int
+
+		init(_ from: Int, _ to: Int) {
+			self.from = from
+			self.to = to
+		}
+	}
+
+	struct RowChanges {
+
+		var section: Int
+		var deletes: Set<Int>?
+		var inserts: Set<Int>?
+		var reloads: Set<Int>?
+		var moves: Set<ShadowTableChanges.Move>?
+
+		var isEmpty: Bool {
+			return (deletes?.isEmpty ?? true) && (inserts?.isEmpty ?? true) && (moves?.isEmpty ?? true)
+		}
+
+		var deleteIndexPaths: [IndexPath]? {
+			guard let deletes = deletes else { return nil }
+			return deletes.map { IndexPath(row: $0, section: section) }
+		}
+
+		var insertIndexPaths: [IndexPath]? {
+			guard let inserts = inserts else { return nil }
+			return inserts.map { IndexPath(row: $0, section: section) }
+		}
+
+		var reloadIndexPaths: [IndexPath]? {
+			guard let reloads = reloads else { return nil }
+			return reloads.map { IndexPath(row: $0, section: section) }
+		}
+
+		var moveIndexPaths: [(IndexPath, IndexPath)]? {
+			guard let moves = moves else { return nil }
+			return moves.map { (IndexPath(row: $0.from, section: section), IndexPath(row: $0.to, section: section)) }
+		}
+
+		init(section: Int, deletes: Set<Int>?, inserts: Set<Int>?, reloads: Set<Int>?, moves: Set<Move>?) {
+			self.section = section
+			self.deletes = deletes
+			self.inserts = inserts
+			self.reloads = reloads
+			self.moves = moves
+		}
+	}
+
+	var deletes: Set<Int>?
+	var inserts: Set<Int>?
+	var moves: Set<Move>?
+	var rowChanges: [RowChanges]?
+}