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// SPDX-License-Identifier: MIT
// Copyright © 2018-2019 WireGuard LLC. All Rights Reserved.
import Cocoa
class LogViewController: NSViewController {
enum LogColumn: String {
case time = "Time"
case logMessage = "LogMessage"
func createColumn() -> NSTableColumn {
return NSTableColumn(identifier: NSUserInterfaceItemIdentifier(rawValue))
}
func isRepresenting(tableColumn: NSTableColumn?) -> Bool {
return tableColumn?.identifier.rawValue == rawValue
}
}
let scrollView: NSScrollView = {
let scrollView = NSScrollView()
scrollView.hasVerticalScroller = true
scrollView.autohidesScrollers = false
scrollView.borderType = .bezelBorder
return scrollView
}()
let tableView: NSTableView = {
let tableView = NSTableView()
let timeColumn = LogColumn.time.createColumn()
timeColumn.title = tr("macLogColumnTitleTime")
timeColumn.width = 160
timeColumn.resizingMask = []
tableView.addTableColumn(timeColumn)
let messageColumn = LogColumn.logMessage.createColumn()
messageColumn.title = tr("macLogColumnTitleLogMessage")
messageColumn.minWidth = 360
messageColumn.resizingMask = .autoresizingMask
tableView.addTableColumn(messageColumn)
tableView.rowSizeStyle = .custom
tableView.rowHeight = 16
tableView.usesAlternatingRowBackgroundColors = true
tableView.usesAutomaticRowHeights = true
tableView.allowsColumnReordering = false
tableView.allowsColumnResizing = true
tableView.allowsMultipleSelection = true
return tableView
}()
let progressIndicator: NSProgressIndicator = {
let progressIndicator = NSProgressIndicator()
progressIndicator.controlSize = .small
progressIndicator.isIndeterminate = true
progressIndicator.style = .spinning
progressIndicator.isDisplayedWhenStopped = false
return progressIndicator
}()
let closeButton: NSButton = {
let button = NSButton()
button.title = tr("macLogButtonTitleClose")
button.setButtonType(.momentaryPushIn)
button.bezelStyle = .rounded
return button
}()
let saveButton: NSButton = {
let button = NSButton()
button.title = tr("macLogButtonTitleSave")
button.setButtonType(.momentaryPushIn)
button.bezelStyle = .rounded
return button
}()
let logViewHelper: LogViewHelper?
var logEntries = [LogViewHelper.LogEntry]()
var isFetchingLogEntries = false
var isInScrolledToEndMode = true
private var updateLogEntriesTimer: Timer?
init() {
logViewHelper = LogViewHelper(logFilePath: FileManager.logFileURL?.path)
super.init(nibName: nil, bundle: nil)
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override func loadView() {
tableView.dataSource = self
tableView.delegate = self
closeButton.target = self
closeButton.action = #selector(closeClicked)
saveButton.target = self
saveButton.action = #selector(saveClicked)
saveButton.isEnabled = false
let clipView = NSClipView()
clipView.documentView = tableView
scrollView.contentView = clipView
_ = NotificationCenter.default.addObserver(forName: NSView.boundsDidChangeNotification, object: clipView, queue: OperationQueue.main) { [weak self] _ in
guard let self = self else { return }
let lastVisibleRowIndex = self.tableView.row(at: NSPoint(x: 0, y: self.scrollView.contentView.documentVisibleRect.maxY - 1))
self.isInScrolledToEndMode = lastVisibleRowIndex < 0 || lastVisibleRowIndex == self.logEntries.count - 1
}
_ = NotificationCenter.default.addObserver(forName: NSView.frameDidChangeNotification, object: tableView, queue: OperationQueue.main) { [weak self] _ in
guard let self = self else { return }
if self.isInScrolledToEndMode {
DispatchQueue.main.async {
self.tableView.scroll(NSPoint(x: 0, y: self.tableView.frame.maxY - clipView.documentVisibleRect.height))
}
}
}
let margin: CGFloat = 20
let internalSpacing: CGFloat = 10
let buttonRowStackView = NSStackView()
buttonRowStackView.addView(closeButton, in: .leading)
buttonRowStackView.addView(saveButton, in: .trailing)
buttonRowStackView.orientation = .horizontal
buttonRowStackView.spacing = internalSpacing
let containerView = NSView()
[scrollView, progressIndicator, buttonRowStackView].forEach { view in
containerView.addSubview(view)
view.translatesAutoresizingMaskIntoConstraints = false
}
NSLayoutConstraint.activate([
scrollView.topAnchor.constraint(equalTo: containerView.topAnchor, constant: margin),
scrollView.leftAnchor.constraint(equalTo: containerView.leftAnchor, constant: margin),
containerView.rightAnchor.constraint(equalTo: scrollView.rightAnchor, constant: margin),
buttonRowStackView.topAnchor.constraint(equalTo: scrollView.bottomAnchor, constant: internalSpacing),
buttonRowStackView.leftAnchor.constraint(equalTo: containerView.leftAnchor, constant: margin),
containerView.rightAnchor.constraint(equalTo: buttonRowStackView.rightAnchor, constant: margin),
containerView.bottomAnchor.constraint(equalTo: buttonRowStackView.bottomAnchor, constant: margin),
progressIndicator.centerXAnchor.constraint(equalTo: scrollView.centerXAnchor),
progressIndicator.centerYAnchor.constraint(equalTo: scrollView.centerYAnchor)
])
NSLayoutConstraint.activate([
containerView.widthAnchor.constraint(equalToConstant: 640),
containerView.heightAnchor.constraint(greaterThanOrEqualToConstant: 240)
])
containerView.frame = NSRect(x: 0, y: 0, width: 640, height: 480)
view = containerView
progressIndicator.startAnimation(self)
startUpdatingLogEntries()
}
func updateLogEntries() {
guard !isFetchingLogEntries else { return }
isFetchingLogEntries = true
logViewHelper?.fetchLogEntriesSinceLastFetch { [weak self] fetchedLogEntries in
guard let self = self else { return }
defer {
self.isFetchingLogEntries = false
}
if !self.progressIndicator.isHidden {
self.progressIndicator.stopAnimation(self)
self.saveButton.isEnabled = true
}
guard !fetchedLogEntries.isEmpty else { return }
let oldCount = self.logEntries.count
self.logEntries.append(contentsOf: fetchedLogEntries)
self.tableView.insertRows(at: IndexSet(integersIn: oldCount ..< oldCount + fetchedLogEntries.count), withAnimation: .slideDown)
}
}
func startUpdatingLogEntries() {
updateLogEntries()
updateLogEntriesTimer?.invalidate()
let timer = Timer(timeInterval: 1 /* second */, repeats: true) { [weak self] _ in
self?.updateLogEntries()
}
updateLogEntriesTimer = timer
RunLoop.main.add(timer, forMode: .common)
}
func stopUpdatingLogEntries() {
updateLogEntriesTimer?.invalidate()
updateLogEntriesTimer = nil
}
override func viewWillDisappear() {
super.viewWillDisappear()
stopUpdatingLogEntries()
}
@objc func saveClicked() {
let savePanel = NSSavePanel()
savePanel.prompt = tr("macSheetButtonExportLog")
savePanel.nameFieldLabel = tr("macNameFieldExportLog")
let dateFormatter = ISO8601DateFormatter()
dateFormatter.formatOptions = [.withFullDate, .withTime, .withTimeZone] // Avoid ':' in the filename
let timeStampString = dateFormatter.string(from: Date())
savePanel.nameFieldStringValue = "wireguard-log-\(timeStampString).txt"
savePanel.beginSheetModal(for: self.view.window!) { [weak self] response in
guard response == .OK else { return }
guard let destinationURL = savePanel.url else { return }
DispatchQueue.global(qos: .userInitiated).async { [weak self] in
let isWritten = Logger.global?.writeLog(to: destinationURL.path) ?? false
guard isWritten else {
DispatchQueue.main.async { [weak self] in
ErrorPresenter.showErrorAlert(title: tr("alertUnableToWriteLogTitle"), message: tr("alertUnableToWriteLogMessage"), from: self)
}
return
}
DispatchQueue.main.async { [weak self] in
guard let self = self else { return }
self.presentingViewController?.dismiss(self)
}
}
}
}
@objc func closeClicked() {
presentingViewController?.dismiss(self)
}
@objc func copy(_ sender: Any?) {
let text = tableView.selectedRowIndexes.sorted().reduce("") { $0 + self.logEntries[$1].text() + "\n" }
let pasteboard = NSPasteboard.general
pasteboard.clearContents()
pasteboard.writeObjects([text as NSString])
}
}
extension LogViewController: NSTableViewDataSource {
func numberOfRows(in tableView: NSTableView) -> Int {
return logEntries.count
}
}
extension LogViewController: NSTableViewDelegate {
func tableView(_ tableView: NSTableView, viewFor tableColumn: NSTableColumn?, row: Int) -> NSView? {
if LogColumn.time.isRepresenting(tableColumn: tableColumn) {
let cell: LogViewTimestampCell = tableView.dequeueReusableCell()
cell.stringValue = logEntries[row].timestamp
return cell
} else if LogColumn.logMessage.isRepresenting(tableColumn: tableColumn) {
let cell: LogViewMessageCell = tableView.dequeueReusableCell()
cell.stringValue = logEntries[row].message
cell.preferredMaxLayoutWidth = tableColumn?.width ?? 0
return cell
} else {
fatalError()
}
}
}
extension LogViewController {
override func cancelOperation(_ sender: Any?) {
closeClicked()
}
}
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