fix: custom shortcuts can use arrow keys (closes #1376)

docs/Contributors.md

@@ -38,7 +38,7 @@ They helped [localize the app](https://poeditor.com/join/project/8AOEZ0eAZE):
 * Albert Abdilim
 * Ali Gokmen
 * Allen Guan
-* Anurag
+* Anurag Roy
 * anushree b
 * Arthur
 * Ash

src/ui/generic-components/CustomRecorderControl.swift

@@ -49,11 +49,12 @@ class CustomRecorderControl: RecorderControl, RecorderControlDelegate {
     }
 
     func alertIfSameShortcutAlreadyAssigned(_ shortcut: Shortcut, _ shortcutAlreadyAssigned: ATShortcut) {
-        let existing = ControlsTab.shortcutControls[shortcutAlreadyAssigned.id]!
+        let isArrowKeys = ["←", "→", "↑", "↓"].contains(shortcutAlreadyAssigned.id)
+        let existing = ControlsTab.shortcutControls[shortcutAlreadyAssigned.id]
         let alert = NSAlert()
         alert.alertStyle = .critical
         alert.messageText = NSLocalizedString("Conflicting shortcut", comment: "")
-        alert.informativeText = String(format: NSLocalizedString("Shortcut already assigned to another action: %@", comment: ""), existing.1.replacingOccurrences(of: " ", with: "\u{00A0}"))
+        alert.informativeText = String(format: NSLocalizedString("Shortcut already assigned to another action: %@", comment: ""), (isArrowKeys ? "Arrow keys" : existing!.1).replacingOccurrences(of: " ", with: "\u{00A0}"))
         if !id.starts(with: "holdShortcut") {
             alert.addButton(withTitle: NSLocalizedString("Unassign existing shortcut and continue", comment: "")).setAccessibilityFocused(true)
         }
@@ -64,9 +65,15 @@ class CustomRecorderControl: RecorderControl, RecorderControlDelegate {
         }
         let userChoice = alert.runModal()
         if !id.starts(with: "holdShortcut") && userChoice == .alertFirstButtonReturn {
-            existing.0.objectValue = nil
+            if isArrowKeys {
-            ControlsTab.shortcutChangedCallback(existing.0)
+                ControlsTab.arrowKeysCheckbox.state = .off
-            LabelAndControl.controlWasChanged(existing.0, shortcutAlreadyAssigned.id)
+                ControlsTab.arrowKeysEnabledCallback(ControlsTab.arrowKeysCheckbox)
+                LabelAndControl.controlWasChanged(ControlsTab.arrowKeysCheckbox, nil)
+            } else {
+                existing!.0.objectValue = nil
+                ControlsTab.shortcutChangedCallback(existing!.0)
+                LabelAndControl.controlWasChanged(existing!.0, shortcutAlreadyAssigned.id)
+            }
             ControlsTab.shortcutControls[id]!.0.objectValue = shortcut
             ControlsTab.shortcutChangedCallback(self)
             LabelAndControl.controlWasChanged(self, id)

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

@@ -21,6 +21,7 @@ class ControlsTab {
         "quitAppShortcut": { App.app.quitSelectedApp() },
         "hideShowAppShortcut": { App.app.hideShowSelectedApp() },
     ]
+    static var arrowKeysCheckbox: NSButton!
 
     static func initTab() -> NSView {
         let focusWindowShortcut = LabelAndControl.makeLabelWithRecorder(NSLocalizedString("Focus selected window", comment: ""), "focusWindowShortcut", Preferences.focusWindowShortcut, labelPosition: .right)
@@ -31,6 +32,7 @@ class ControlsTab {
         let quitAppShortcut = LabelAndControl.makeLabelWithRecorder(NSLocalizedString("Quit app", comment: ""), "quitAppShortcut", Preferences.quitAppShortcut, labelPosition: .right)
         let hideShowAppShortcut = LabelAndControl.makeLabelWithRecorder(NSLocalizedString("Hide/Show app", comment: ""), "hideShowAppShortcut", Preferences.hideShowAppShortcut, labelPosition: .right)
         let enableArrows = LabelAndControl.makeLabelWithCheckbox(NSLocalizedString("Arrow keys", comment: ""), "arrowKeysEnabled", extraAction: ControlsTab.arrowKeysEnabledCallback, labelPosition: .right)
+        arrowKeysCheckbox = enableArrows[0] as! NSButton
         let enableMouse = LabelAndControl.makeLabelWithCheckbox(NSLocalizedString("Mouse hover", comment: ""), "mouseHoverEnabled", labelPosition: .right)
         let enableCursorFollowFocus = LabelAndControl.makeLabelWithCheckbox(NSLocalizedString("Cursor follows focus", comment: ""), "cursorFollowFocusEnabled", labelPosition: .right)
         let selectWindowcheckboxesExplanations = LabelAndControl.makeLabel(NSLocalizedString("Also select windows using:", comment: ""))
@@ -43,7 +45,7 @@ class ControlsTab {
         let (holdShortcut2, nextWindowShortcut2, tab2View) = toShowSection("2")
         let tabView = TabView([(NSLocalizedString("Shortcut 1", comment: ""), tab1View), (NSLocalizedString("Shortcut 2", comment: ""), tab2View)])
 
-        ControlsTab.arrowKeysEnabledCallback(enableArrows[0] as! NSControl)
+        ControlsTab.arrowKeysEnabledCallback(arrowKeysCheckbox)
         // trigger shortcutChanged for these shortcuts to trigger .restrictModifiers
         [holdShortcut, holdShortcut2].forEach { ControlsTab.shortcutChangedCallback($0[1] as! NSControl) }
         [nextWindowShortcut, nextWindowShortcut2].forEach { ControlsTab.shortcutChangedCallback($0[0] as! NSControl) }