misc: swift difference

Examples/ClashX Dashboard Demo.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved

@@ -18,15 +18,6 @@
         "version" : "3.8.0"
       }
     },
-    {
-      "identity" : "differencekit",
-      "kind" : "remoteSourceControl",
-      "location" : "https://github.com/ra1028/DifferenceKit",
-      "state" : {
-        "revision" : "073b9671ce2b9b5b96398611427a1f929927e428",
-        "version" : "1.3.0"
-      }
-    },
     {
       "identity" : "dsfsparkline",
       "kind" : "remoteSourceControl",

Package.resolved

@@ -18,15 +18,6 @@
         "version" : "3.8.0"
       }
     },
-    {
-      "identity" : "differencekit",
-      "kind" : "remoteSourceControl",
-      "location" : "https://github.com/ra1028/DifferenceKit.git",
-      "state" : {
-        "revision" : "073b9671ce2b9b5b96398611427a1f929927e428",
-        "version" : "1.3.0"
-      }
-    },
     {
       "identity" : "dsfsparkline",
       "kind" : "remoteSourceControl",

Package.swift

@@ -20,7 +20,6 @@ let package = Package(
 		 .package(url: "https://github.com/SwiftyJSON/SwiftyJSON.git", from: "5.0.0"),
 		 .package(url: "https://github.com/daltoniam/Starscream.git", exact: "3.1.1"),
 		 .package(url: "https://github.com/CocoaLumberjack/CocoaLumberjack.git", from: "3.0.0"),
-		 .package(url: "https://github.com/ra1028/DifferenceKit.git", from: "1.0.0"),
 		 .package(url: "https://github.com/dagronf/DSFSparkline.git", from: "4.0.0"),
 		 .package(url: "https://github.com/siteline/swiftui-introspect", from: "0.10.0"),
     ],
@@ -33,7 +32,6 @@ let package = Package(
 				"Alamofire",
 				"CocoaLumberjack",
 				.product(name: "CocoaLumberjackSwift", package: "CocoaLumberjack"),
-				"DifferenceKit",
 				"DSFSparkline",
 				.product(name: "SwiftUIIntrospect", package: "swiftui-introspect"),
 				"Starscream",

Sources/ClashX Dashboard/Models/DBConnectionSnapShot.swift

@@ -5,7 +5,6 @@
 //
 
 import Cocoa
-import DifferenceKit
 
 struct DBConnectionSnapShot: Codable {
 	let downloadTotal: Int
@@ -49,7 +48,7 @@ struct DBMetaConnectionData: Codable, Hashable {
 }
 
 
-class DBConnectionObject: NSObject, Differentiable {
+class DBConnectionObject: NSObject {
 	@objc let id: String
 	@objc let host: String
 	@objc let sniffHost: String
@@ -67,9 +66,6 @@ class DBConnectionObject: NSObject, Differentiable {
 	@objc let destinationIP: String?
 	@objc let type: String
 	
-	var differenceIdentifier: String {
-		return id
-	}
 	
 	func isContentEqual(to source: DBConnectionObject) -> Bool {
 		download == source.download &&

Sources/ClashX Dashboard/Views/ClashApiDatasStorage.swift

@@ -7,7 +7,6 @@
 import Cocoa
 import SwiftUI
 import CocoaLumberjackSwift
-import DifferenceKit
 
 class ClashApiDatasStorage: NSObject, ObservableObject {
 	
@@ -126,25 +125,23 @@ class ClashOverviewData: ObservableObject, Identifiable {
 class ClashLogStorage: ObservableObject {
 	@Published var logs = [ClashLog]()
 	
-	class ClashLog: NSObject, ObservableObject, Identifiable, Differentiable {
+	class ClashLog: NSObject, ObservableObject {
 		let id: String
-		var differenceIdentifier: String {
-			return id
-		}
 		
 		let date: Date
 		let level: ClashLogLevel
-		@objc let log: String
+		let log: String
 		
 		let levelColor: NSColor
-		@objc let levelString: String
+		let levelString: String
 		
 		init(level: String, log: String) {
-			self.date = Date()
+			id = UUID().uuidString
+			date = Date()
+			
 			self.level = .init(rawValue: level) ?? .unknow
 			self.log = log
 			
-			id = "\(date)" + log
 			self.levelString = level
 			switch self.level {
 			case .info:

Sources/ClashX Dashboard/Views/ContentTabs/Connections/ConnectionsTableView.swift

@@ -5,7 +5,6 @@
 //
 import SwiftUI
 import AppKit
-import DifferenceKit
 
 struct ConnectionsTableView<Item: Hashable>: NSViewRepresentable {
 
@@ -62,7 +61,7 @@ struct ConnectionsTableView<Item: Hashable>: NSViewRepresentable {
 		
 		
 		TableColumn.allCases.forEach {
-			let tableColumn = NSTableColumn(identifier: .init($0.rawValue))
+			let tableColumn = NSTableColumn(identifier: .init("ConnectionsTableView." + $0.rawValue))
 			tableColumn.title = $0.rawValue
 			tableColumn.isEditable = false
 			
@@ -139,22 +138,24 @@ struct ConnectionsTableView<Item: Hashable>: NSViewRepresentable {
 			return
 		}
 		
-		let target = updateSorts(data.map(DBConnectionObject.init), tableView: tableView)
+		var conns = data.map(DBConnectionObject.init)
 		
-		let source = context.coordinator.conns
-		let changeset = StagedChangeset(source: source, target: target)
-		
-	
-		tableView.reload(using: changeset) { data in
-			context.coordinator.conns = data
 		}
+		
+		conns = updateSorts(conns, tableView: tableView)
+		context.coordinator.updateConns(conns, for: tableView)
 	}
 	
 	func updateSorts(_ objects: [DBConnectionObject],
 					 tableView: NSTableView) -> [DBConnectionObject] {
 		var re = objects
 		
-		var sortDescriptors = tableView.sortDescriptors
+		var sortDescriptors = [NSSortDescriptor]()
+		
+		if let sort = tableView.sortDescriptors.first {
+			sortDescriptors.append(sort)
+		}
+		
 		sortDescriptors.append(.init(keyPath: \DBConnectionObject.id, ascending: true))
 		re = re.sorted(descriptors: sortDescriptors)
 		
@@ -188,6 +189,22 @@ struct ConnectionsTableView<Item: Hashable>: NSViewRepresentable {
 			self.parent = parent
 		}
 		
+		func updateConns(_ conns: [DBConnectionObject], for tableView: NSTableView) {
+			let changes = conns.difference(from: self.conns) {
+				$0.id == $1.id
+			}
+			guard let partialChanges = self.conns.applying(changes) else {
+				return
+			}
+			self.conns = conns
+
+			let indicesToReload = IndexSet(zip(partialChanges, conns).enumerated().compactMap { index, pair -> Int? in
+				(pair.0.id == pair.1.id && pair.0 != pair.1) ? index : nil
+			})
+
+			tableView.reloadData(changes, indexs: indicesToReload)
+		}
+		
 		
 		func numberOfRows(in tableView: NSTableView) -> Int {
 			conns.count
@@ -196,14 +213,18 @@ struct ConnectionsTableView<Item: Hashable>: NSViewRepresentable {
 		
 		func tableView(_ tableView: NSTableView, viewFor tableColumn: NSTableColumn?, row: Int) -> NSView? {
 			
-			guard let cellView = tableView.createCellView(with: "ConnsTableCellView"),
-				  let s = tableColumn?.identifier.rawValue.split(separator: ".").last,
-				  let tc = TableColumn(rawValue: String(s))
+			guard let identifier = tableColumn?.identifier,
+				  let cellView = tableView.makeCellView(with: identifier.rawValue, owner: self),
+				  let s = identifier.rawValue.split(separator: ".").last,
+				  let tc = TableColumn(rawValue: String(s)),
+				  row >= 0,
+				  row < conns.count,
+				  let tf = cellView.textField
 			else { return nil }
 			
 			let conn = conns[row]
 			
-			cellView.textField?.objectValue = {
+			tf.objectValue = {
 				switch tc {
 				case .host:
 					return conn.host
@@ -247,102 +268,3 @@ struct ConnectionsTableView<Item: Hashable>: NSViewRepresentable {
 
 	}
 }
-
-
-extension NSTableView {
-	/// Applies multiple animated updates in stages using `StagedChangeset`.
-	///
-	/// - Note: There are combination of changes that crash when applied simultaneously in `performBatchUpdates`.
-	///         Assumes that `StagedChangeset` has a minimum staged changesets to avoid it.
-	///         The data of the data-source needs to be updated synchronously before `performBatchUpdates` in every stages.
-	///
-	/// - Parameters:
-	///   - stagedChangeset: A staged set of changes.
-	///   - interrupt: A closure that takes an changeset as its argument and returns `true` if the animated
-	///                updates should be stopped and performed reloadData. Default is nil.
-	///   - setData: A closure that takes the collection as a parameter.
-	///              The collection should be set to data-source of NSTableView.
-	
-	func reload<C>(
-		using stagedChangeset: StagedChangeset<C>,
-		interrupt: ((Changeset<C>) -> Bool)? = nil,
-		setData: (C) -> Void
-	) {
-		if case .none = window, let data = stagedChangeset.last?.data {
-			setData(data)
-			return reloadData()
-		}
-		
-		for changeset in stagedChangeset {
-			if let interrupt = interrupt, interrupt(changeset), let data = stagedChangeset.last?.data {
-				setData(data)
-				return reloadData()
-			}
-			
-			beginUpdates()
-			setData(changeset.data)
-			
-			if !changeset.elementDeleted.isEmpty {
-				removeRows(at: IndexSet(changeset.elementDeleted.map { $0.element }))
-			}
-			
-			if !changeset.elementUpdated.isEmpty {
-				reloadData(forRowIndexes: IndexSet(changeset.elementUpdated.map { $0.element }), columnIndexes: IndexSet(0..<tableColumns.count))
-			}
-			
-			if !changeset.elementInserted.isEmpty {
-				insertRows(at: IndexSet(changeset.elementInserted.map { $0.element }))
-			}
-			endUpdates()
-		}
-	}
-	
-	
-	func createCellView(with identifier: String) -> NSTableCellView? {
-		// https://stackoverflow.com/a/27624927
-		
-		var cellView: NSTableCellView?
-		if let spareView = makeView(withIdentifier: .init(identifier),
-			owner: self) as? NSTableCellView {
-
-			// We can use an old cell - no need to do anything.
-			cellView = spareView
-
-		} else {
-
-			// Create a text field for the cell
-			let textField = NSTextField()
-			textField.backgroundColor = NSColor.clear
-			textField.translatesAutoresizingMaskIntoConstraints = false
-			textField.isBordered = false
-			textField.font = .systemFont(ofSize: 13)
-			textField.lineBreakMode = .byTruncatingTail
-
-			// Create a cell
-			let newCell = NSTableCellView()
-			newCell.identifier = .init(identifier)
-			newCell.addSubview(textField)
-			newCell.textField = textField
-
-			// Constrain the text field within the cell
-			newCell.addConstraints(
-				NSLayoutConstraint.constraints(withVisualFormat: "H:|[textField]|",
-					options: [],
-					metrics: nil,
-					views: ["textField" : textField]))
-
-			newCell.addConstraint(.init(item: textField, attribute: .centerY, relatedBy: .equal, toItem: newCell, attribute: .centerY, multiplier: 1, constant: 0))
-			
-
-			textField.bind(NSBindingName.value,
-						   to: newCell,
-				withKeyPath: "objectValue",
-				options: nil)
-
-			cellView = newCell
-		}
-		
-		return cellView
-	}
-	
-}

Sources/ClashX Dashboard/Views/ContentTabs/Logs/LogsTableView.swift

@@ -6,7 +6,6 @@
 
 import Cocoa
 import SwiftUI
-import DifferenceKit
 
 struct LogsTableView<Item: Hashable>: NSViewRepresentable {
 	
@@ -41,7 +40,7 @@ struct LogsTableView<Item: Hashable>: NSViewRepresentable {
 		tableView.dataSource = context.coordinator
 		
 		TableColumn.allCases.forEach {
-			let tableColumn = NSTableColumn(identifier: .init($0.rawValue))
+			let tableColumn = NSTableColumn(identifier: .init("LogsTableView." + $0.rawValue))
 			tableColumn.title = $0.rawValue
 			tableColumn.isEditable = false
 			
@@ -69,19 +68,11 @@ struct LogsTableView<Item: Hashable>: NSViewRepresentable {
 	func updateNSView(_ nsView: NSScrollView, context: Context) {
 		context.coordinator.parent = self
 		guard let tableView = nsView.documentView as? NSTableView,
-			  let data = data as? [ClashLogStorage.ClashLog] else {
+			  var data = data as? [ClashLogStorage.ClashLog] else {
 			return
 		}
-		
-		let target = updateSorts(data, tableView: tableView)
-		
-		let source = context.coordinator.logs
-		let changeset = StagedChangeset(source: source, target: target)
-		
-	
-		tableView.reload(using: changeset) { data in
-			context.coordinator.logs = data
-		}
+		data = updateSorts(data, tableView: tableView)
+		context.coordinator.updateLogs(data, for: tableView)
 	}
 	
 	func updateSorts(_ objects: [ClashLogStorage.ClashLog],
@@ -114,12 +105,28 @@ struct LogsTableView<Item: Hashable>: NSViewRepresentable {
 			df.dateFormat = "MM/dd HH:mm:ss.SSS"
 			return df
 		}()
-
 		
 		init(parent: LogsTableView) {
 			self.parent = parent
 		}
 		
+		func updateLogs(_ logs: [ClashLogStorage.ClashLog], for tableView: NSTableView) {
+			
+			let changes = logs.difference(from: self.logs) {
+				$0.id == $1.id
+			}
+			
+			guard let partialChanges = self.logs.applying(changes) else { return }
+			
+			self.logs = partialChanges
+
+			let indicesToReload = IndexSet(zip(partialChanges, logs).enumerated().compactMap { index, pair -> Int? in
+				(pair.0.id == pair.1.id && pair.0 != pair.1) ? index : nil
+			})
+			
+			tableView.reloadData(changes, indexs: indicesToReload)
+		}
+		
 		
 		func numberOfRows(in tableView: NSTableView) -> Int {
 			logs.count
@@ -128,31 +135,37 @@ struct LogsTableView<Item: Hashable>: NSViewRepresentable {
 		
 		func tableView(_ tableView: NSTableView, viewFor tableColumn: NSTableColumn?, row: Int) -> NSView? {
 			
-			guard let cellView = tableView.createCellView(with: "LogsTableCellView"),
-				  let s = tableColumn?.identifier.rawValue.split(separator: ".").last,
-				  let tc = TableColumn(rawValue: String(s))
+			guard let identifier = tableColumn?.identifier,
+				  let cellView = tableView.makeCellView(with: identifier.rawValue, owner: self),
+				  let s = identifier.rawValue.split(separator: ".").last,
+				  let tc = TableColumn(rawValue: String(s)),
+				  row >= 0,
+				  row < logs.count,
+				  let tf = cellView.textField
 			else { return nil }
 			
 			let log = logs[row]
-			let tf = cellView.textField
+			
+			tf.isEditable = false
+			tf.isSelectable = false
 			
 			switch tc {
 			case .date:
-				tf?.lineBreakMode = .byTruncatingHead
-				tf?.textColor = .orange
-				tf?.stringValue = dateFormatter.string(from: log.date)
+				tf.lineBreakMode = .byTruncatingHead
+				tf.textColor = .orange
+				tf.stringValue = dateFormatter.string(from: log.date)
 			case .level:
-				tf?.lineBreakMode = .byTruncatingTail
-				tf?.textColor = log.levelColor
-				tf?.stringValue = log.levelString
+				tf.lineBreakMode = .byTruncatingTail
+				tf.textColor = log.levelColor
+				tf.stringValue = log.levelString
 			case .log:
-				tf?.lineBreakMode = .byTruncatingTail
-				tf?.textColor = .labelColor
-				tf?.stringValue = log.log
+				tf.lineBreakMode = .byTruncatingTail
+				tf.textColor = .labelColor
+				tf.stringValue = log.log
+				tf.isSelectable = true
 			}
 			
 			return cellView
 		}
-		
 	}
 }

Sources/ClashX Dashboard/Views/NSTableViewExtension.swift

@@ -0,0 +1,72 @@
+//
+//  NSTableViewExtension.swift
+//  
+//
+
+//
+
+import Cocoa
+
+extension NSTableView {
+	func makeCellView(with identifier: String, owner: Any?) -> NSTableCellView? {
+		// https://stackoverflow.com/a/27624927
+		
+		var cellView: NSTableCellView?
+		if let spareView = makeView(withIdentifier: .init(identifier),
+			owner: owner) as? NSTableCellView {
+
+			// We can use an old cell - no need to do anything.
+			cellView = spareView
+
+		} else {
+
+			// Create a text field for the cell
+			let textField = NSTextField()
+			textField.backgroundColor = NSColor.clear
+			textField.translatesAutoresizingMaskIntoConstraints = false
+			textField.isBordered = false
+			textField.font = .systemFont(ofSize: 13)
+			textField.lineBreakMode = .byTruncatingTail
+
+			// Create a cell
+			let newCell = NSTableCellView()
+			newCell.identifier = .init(identifier)
+			newCell.addSubview(textField)
+			newCell.textField = textField
+
+			// Constrain the text field within the cell
+			newCell.addConstraints(
+				NSLayoutConstraint.constraints(withVisualFormat: "H:|[textField]|",
+					options: [],
+					metrics: nil,
+					views: ["textField" : textField]))
+
+			newCell.addConstraint(.init(item: textField, attribute: .centerY, relatedBy: .equal, toItem: newCell, attribute: .centerY, multiplier: 1, constant: 0))
+			
+
+			textField.bind(NSBindingName.value,
+						   to: newCell,
+				withKeyPath: "objectValue",
+				options: nil)
+
+			cellView = newCell
+		}
+		
+		return cellView
+	}
+	
+	
+	func reloadData<C>(_ changes: CollectionDifference<C>, indexs: IndexSet) {
+		beginUpdates()
+		for change in changes {
+			switch change {
+			case .insert(let offset, _, _):
+				insertRows(at: IndexSet(integer: offset))
+			case .remove(let offset, _, _):
+				removeRows(at: IndexSet(integer: offset))
+			}
+		}
+		reloadData(forRowIndexes: indexs, columnIndexes: IndexSet(tableColumns.indices))
+		endUpdates()
+	}
+}