fix: occasional crash when updating some preferences

src/ui/preferences-window/LabelAndControl.swift

@@ -10,8 +10,8 @@ enum LabelPosition {
 class LabelAndControl: NSObject {
     static func makeLabelWithRecorder(_ labelText: String, _ rawName: String, _ shortcutString: String, _ clearable: Bool = true, labelPosition: LabelPosition = .leftWithSeparator) -> [NSView] {
         let input = CustomRecorderControl(shortcutString, clearable)
-        let views = makeLabelWithProvidedControl(labelText, rawName, input, labelPosition: labelPosition, extraAction: { _ in GeneralTab.shortcutChangedCallback(input, rawName) })
-        GeneralTab.shortcutChangedCallback(input, rawName)
+        let views = makeLabelWithProvidedControl(labelText, rawName, input, labelPosition: labelPosition, extraAction: { _ in GeneralTab.shortcutChangedCallback(input) })
+        GeneralTab.shortcutChangedCallback(input)
         return views
     }
 
@@ -26,7 +26,7 @@ class LabelAndControl: NSObject {
     static func makeTextArea(_ nCharactersWide: CGFloat, _ nLinesHigh: Int, _ placeholder: String, _ rawName: String, extraAction: ActionClosure? = nil) -> [NSView] {
         let textArea = TextArea(nCharactersWide, nLinesHigh, placeholder)
         textArea.callback = {
-            controlWasChanged(textArea, rawName, nil)
+            controlWasChanged(textArea, nil)
             extraAction?(textArea)
         }
         textArea.identifier = NSUserInterfaceItemIdentifier(rawName)
@@ -92,20 +92,21 @@ class LabelAndControl: NSObject {
     }
 
     static func setupControl(_ control: NSControl, _ rawName: String, _ controlId: String? = nil, extraAction: ActionClosure? = nil) -> NSControl {
+        control.identifier = NSUserInterfaceItemIdentifier(rawName)
         control.onAction = {
-            controlWasChanged($0, rawName, controlId)
+            controlWasChanged($0, controlId)
             extraAction?($0)
         }
         return control
     }
 
-    static func controlWasChanged(_ senderControl: NSControl, _ rawName: String, _ controlId: String?) {
+    static func controlWasChanged(_ senderControl: NSControl, _ controlId: String?) {
         if let newValue = LabelAndControl.getControlValue(senderControl, controlId) {
             LabelAndControl.updateControlExtras(senderControl, newValue)
-            Preferences.set(rawName, newValue)
+            Preferences.set(senderControl.identifier!.rawValue, newValue)
         }
         // some preferences require re-creating some components
-        if ["iconSize", "fontHeight", "theme", "titleTruncation"].contains(where: { (pref: String) -> Bool in pref == rawName }) {
+        if ["iconSize", "fontHeight", "theme", "titleTruncation"].contains(where: { (pref: String) -> Bool in pref == senderControl.identifier!.rawValue }) {
             (App.shared as! App).resetPreferencesDependentComponents()
         }
     }

src/ui/preferences-window/tabs/GeneralTab.swift

@@ -130,24 +130,25 @@ class GeneralTab: NSViewController, PreferencePane {
         App.shortcutMonitor.addAction(shortcutActions[controlId]!, forKeyEvent: type)
     }
 
-    @objc static func shortcutChangedCallback(_ sender: NSControl, _ rawName: String) {
-        if rawName == "holdShortcut" {
-            addShortcut(.up, Shortcut(keyEquivalent: Preferences.holdShortcut)!, rawName)
+    @objc static func shortcutChangedCallback(_ sender: NSControl) {
+        let controlId = sender.identifier!.rawValue
+        if controlId == "holdShortcut" {
+            addShortcut(.up, Shortcut(keyEquivalent: Preferences.holdShortcut)!, controlId)
             shortcutsDependentOnHoldShortcut.forEach {
                 if $0.identifier!.rawValue == "arrowKeysEnabled" {
                     GeneralTab.arrowKeysEnabledCallback($0)
                 } else {
-                    GeneralTab.shortcutChangedCallback($0, rawName)
+                    GeneralTab.shortcutChangedCallback($0)
                 }
             }
         } else {
             // remove the holdShortcut character in case they also use it in the other shortcuts
             let newValue = Preferences.holdShortcut.reduce((sender as! RecorderControl).stringValue, { $0.replacingOccurrences(of: String($1), with: "") })
             if newValue.isEmpty {
-                removeShortcutIfExists(rawName, .down)
+                removeShortcutIfExists(controlId, .down)
                 return
             }
-            addShortcut(.down, Shortcut(keyEquivalent: Preferences.holdShortcut + newValue)!, rawName)
+            addShortcut(.down, Shortcut(keyEquivalent: Preferences.holdShortcut + newValue)!, controlId)
         }
     }