Show an alert when trying to assign a shortcut that’s already in use.

Author: Kamil Daniel

Sources/KeyboardShortcuts/KeyboardShortcuts.swift

@@ -381,6 +381,9 @@ public enum KeyboardShortcuts {
 
 	private static func handleOnKeyDown(_ shortcut: Shortcut) {
 		guard !isPaused else {
+			NSAlert.showModal(
+				for: nil,
+				title: "keyboard_shortcut_used_by_other_action".localized)
 			return
 		}
 
@@ -407,6 +410,9 @@ public enum KeyboardShortcuts {
 
 	private static func handleOnKeyUp(_ shortcut: Shortcut) {
 		guard !isPaused else {
+			NSAlert.showModal(
+				for: nil,
+				title: "keyboard_shortcut_used_by_other_action".localized)
 			return
 		}
 

Sources/KeyboardShortcuts/Localization/en.lproj/Localizable.strings

@@ -1,7 +1,8 @@
 "record_shortcut" = "Record Shortcut";
 "press_shortcut" = "Press Shortcut";
+"keyboard_shortcut_used_by_other_action" = "This keyboard shortcut is already assigned to another action."
 "keyboard_shortcut_used_by_menu_item" = "This keyboard shortcut cannot be used as it’s already used by the “%@” menu item.";
-"keyboard_shortcut_used_by_system" = "This keyboard shortcut cannot be used as it’s already a system-wide keyboard shortcut.";
+"keyboard_shortcut_used_by_system" = "This keyboard shortcut cannot be used as it’s already a system-wide keyboard shortcut2.";
 "keyboard_shortcuts_can_be_changed" = "Most system-wide keyboard shortcuts can be changed in “System Settings › Keyboard › Keyboard Shortcuts”.";
 "keyboard_shortcut_disallowed" = "Option modifier must be combined with Command or Control.";
 "force_use_shortcut" = "Use Anyway";