Added settings window.

src/AppDelegate.swift

@@ -3,29 +3,12 @@ import Carbon
 import ServiceManagement
 import OSLog
 
-struct Program {
-    let path: String
-    let name: String
-    let ext: String
-}
-
-func appActivatedHandler(nextHandler: EventHandlerCallRef?, theEvent: EventRef?, userData: UnsafeMutableRawPointer?) -> OSStatus {
-    print("App was activated!")
-    return noErr
-}
-
 class AppDelegate: NSObject, NSApplicationDelegate, NSWindowDelegate {
     fileprivate static let logger = Logger(
         subsystem: Bundle.main.bundleIdentifier!,
         category: String(describing: AppDelegate.self)
     )
 
-    var paths = ["/Applications", "/System/Applications",
-                 "/System/Applications/Utilities",
-                 "/Applications/Xcode.app/Contents/Applications",
-                 "/System/Library/CoreServices/Applications"]
-    var programs: [Program] = []
-
     let fileManager = FileManager.default
 
     let window = PopoverPanel(viewController: SearchViewController())
@@ -33,45 +16,18 @@ class AppDelegate: NSObject, NSApplicationDelegate, NSWindowDelegate {
     func applicationDidFinishLaunching(_ notification: Notification) {
         Self.logger.debug("applicationDidFinishLaunching")
 
-        NSRunningApplication.current.hide()
+        PathManager.shared.rebuildIndex()
 
         window.delegate = self
 
-        //GlobalEventTap.shared.enable()
-
-        for path in paths {
-            do {
-                let items = try fileManager.contentsOfDirectory(atPath: path)
-                for item in items {
-                    let name = String(item.dropLast(4))
-                    if item.hasSuffix(".app") {
-                        if !programs.contains(where: { name == $0.name }) {
-                            programs.append(Program(path: path, name: name, ext: ".app"))
-                        }
-                    }
-                }
-            } catch {
-                print("Error reading directory: \(error.localizedDescription)")
-            }
-        }
-
         window.makeKeyAndOrderFront(nil)
 
-        // TODO: Implement Unregister and Uninstall.
-        // TODO: A user should be able to enter hot keys to trigger.
-        //       We either can use local event monitor or let user choose
-        //       from list.
-        var hotKeyRef: EventHotKeyRef?
-        let hotKeyID: EventHotKeyID = EventHotKeyID(signature: OSType("grap".fourCharCodeValue), id: 1)
-
-        // GetEventDispatcherTarget
-        var err = RegisterEventHotKey(UInt32(kVK_Space), UInt32(optionKey), hotKeyID, GetApplicationEventTarget(), UInt32(kEventHotKeyNoOptions), &hotKeyRef)
-        //let handler = NewEventHandlerUPP()
-
-        // Handler get executed on main thread.
-        let handler: EventHandlerUPP = { (inHandlerCallRef, inEvent, inUserData) -> OSStatus in
+        HotKeyManager.shared.handler =
+        { (inHandlerCallRef, inEvent, inUserData) -> OSStatus in
             AppDelegate.logger.debug("Shortcut handler fired off.")
-            if let delegate = NSApplication.shared.delegate as? AppDelegate {
+            if let delegate =
+                NSApplication.shared.delegate as? AppDelegate
+            {
                 let window = delegate.window
                 if window.isKeyWindow {
                     window.resignKey()
@@ -79,24 +35,23 @@ class AppDelegate: NSObject, NSApplicationDelegate, NSWindowDelegate {
                     window.makeKeyAndOrderFront(nil)
                 }
             }
-
             return noErr
         }
-        var eventHandlerRef: EventHandlerRef? = nil
 
-        if err == noErr {
-            Self.logger.debug("Registered hot key.")
-
-            var eventType = EventTypeSpec(eventClass: OSType(kEventClassKeyboard), eventKind: UInt32(kEventHotKeyPressed))
-            err = InstallEventHandler(GetApplicationEventTarget(), handler, 1, &eventType, nil, &eventHandlerRef)
-
-            if err == noErr {
-                Self.logger.debug("Event handler installed.")
-            } else {
-                Self.logger.debug("Failed to install event handler.")
-            }
+        HotKeyManager.shared.enable()
+        if let code =
+                UserDefaults.standard.object(forKey: "keyCode") as? Int,
+           let mods =
+            UserDefaults.standard.object(forKey: "keyModifiers") as? Int
+        {
+            HotKeyManager.shared.registerHotKey(key: code,
+                modifiers: mods)
         } else {
-            Self.logger.debug("Failed to register hot key.")
+            // NOTE: This is the default shortcut. If you want to change
+            //       it, do not forget to change it in other files
+            //       (SettingsViewController).
+            HotKeyManager.shared.registerHotKey(key: kVK_Space,
+                modifiers: optionKey)
         }
     }
 
@@ -115,7 +70,9 @@ class AppDelegate: NSObject, NSApplicationDelegate, NSWindowDelegate {
         }
     }
 
-    func applicationShouldHandleReopen(_ sender: NSApplication, hasVisibleWindows: Bool) -> Bool {
+    func applicationShouldHandleReopen(_ sender: NSApplication,
+        hasVisibleWindows: Bool) -> Bool 
+    {
         Self.logger.debug("Application reopened.")
 
         if !window.isKeyWindow {
@@ -124,6 +81,24 @@ class AppDelegate: NSObject, NSApplicationDelegate, NSWindowDelegate {
 
         return true
     }
+
+    public func toggleLaunchAtLogin() {
+        let service = SMAppService.mainApp
+        if service.status == .enabled {
+            try? service.unregister()
+        } else {
+            try? service.register()
+        }
+    }
+
+    public func willLaunchAtLogin() -> Bool {
+        let service = SMAppService.mainApp
+        if service.status == .enabled {
+            return true
+        } else {
+            return false
+        }
+    }
 }
 
 extension String {

src/EditableNSTextField.swift

@@ -3,28 +3,48 @@ import os
 
 final class EditableNSTextField: NSTextField {
     private let commandKey = NSEvent.ModifierFlags.command.rawValue
-    private let commandShiftKey = NSEvent.ModifierFlags.command.rawValue | NSEvent.ModifierFlags.shift.rawValue
+    private let commandShiftKey = NSEvent.ModifierFlags.command.rawValue |
+                                  NSEvent.ModifierFlags.shift.rawValue
 
     override func performKeyEquivalent(with event: NSEvent) -> Bool {
         if event.type == NSEvent.EventType.keyDown {
-            if (event.modifierFlags.rawValue & NSEvent.ModifierFlags.deviceIndependentFlagsMask.rawValue) == commandKey {
+            if (event.modifierFlags.rawValue &
+                NSEvent.ModifierFlags.deviceIndependentFlagsMask.rawValue)
+                == commandKey 
+            {
                 switch event.charactersIgnoringModifiers! {
                 case "x":
-                    if NSApp.sendAction(#selector(NSText.cut(_:)), to: nil, from: self) { return true }
+                    if NSApp.sendAction(#selector(NSText.cut(_:)),
+                        to: nil, from: self)
+                    { return true }
                 case "c":
-                    if NSApp.sendAction(#selector(NSText.copy(_:)), to: nil, from: self) { return true }
+                    if NSApp.sendAction(#selector(NSText.copy(_:)),
+                        to: nil, from: self)
+                    { return true }
                 case "v":
-                    if NSApp.sendAction(#selector(NSText.paste(_:)), to: nil, from: self) { return true }
+                    if NSApp.sendAction(#selector(NSText.paste(_:)),
+                        to: nil, from: self)
+                    { return true }
                 case "z":
-                    if NSApp.sendAction(Selector(("undo:")), to: nil, from: self) { return true }
+                    if NSApp.sendAction(Selector(("undo:")),
+                        to: nil, from: self)
+                    { return true }
                 case "a":
-                    if NSApp.sendAction(#selector(NSResponder.selectAll(_:)), to: nil, from: self) { return true }
+                    if NSApp.sendAction(
+                        #selector(NSResponder.selectAll(_:)), to: nil,
+                        from: self)
+                    { return true }
                 default:
                     break
                 }
-            } else if (event.modifierFlags.rawValue & NSEvent.ModifierFlags.deviceIndependentFlagsMask.rawValue) == commandShiftKey {
+            } else if (event.modifierFlags.rawValue &
+                NSEvent.ModifierFlags.deviceIndependentFlagsMask.rawValue)
+                == commandShiftKey
+            {
                 if event.charactersIgnoringModifiers == "Z" {
-                    if NSApp.sendAction(Selector(("redo:")), to: nil, from: self) { return true }
+                    if NSApp.sendAction(Selector(("redo:")), to: nil,
+                        from: self)
+                    { return true }
                 }
             }
         }

src/EventMonitor.swift

@@ -13,7 +13,7 @@ class EventMonitor {
     }
     
     func start() {
-        fatalError("start must be implemented by a subclass of EventMonitor")
+        fatalError("start must be implemented by a subclass")
     }
     
     func stop() {
@@ -35,7 +35,8 @@ final class LocalEventMonitor: EventMonitor {
     }
     
     override func start() {
-        monitor = NSEvent.addLocalMonitorForEvents(matching: mask, handler: handler)
+        monitor = NSEvent.addLocalMonitorForEvents(matching: mask,
+                                                   handler: handler)
     }
 }
 
@@ -50,6 +51,7 @@ final class GlobalEventMonitor: EventMonitor {
     }
     
     override func start() {
-        monitor = NSEvent.addGlobalMonitorForEvents(matching: mask, handler: handler)
+        monitor = NSEvent.addGlobalMonitorForEvents(matching: mask,
+                                                    handler: handler)
     }
 }

src/GlobalEventTap.swift

@@ -15,12 +15,14 @@ fileprivate func handleGlobalEvents(proxy: CGEventTapProxy,
         case .keyDown:
             //logger.debug(".keyDown")
 
-            if (event.flags.rawValue & CGEventFlags.maskAlternate.rawValue) == CGEventFlags.maskAlternate.rawValue &&
-               (event.flags.rawValue & (CGEventFlags.maskShift.rawValue | CGEventFlags.maskControl.rawValue | CGEventFlags.maskCommand.rawValue)) == 0 {
-                logger.debug("maskAlternate")
-            }
+            let keyCode = "keyCode: \(event.getIntegerValueField(.keyboardEventKeycode))"
+            logger.debug("\(keyCode, privacy: .public)")
 
-            logger.debug("Option rawValue=\(CGEventFlags.maskAlternate.rawValue)")
+            //if (event.flags.rawValue & CGEventFlags.maskAlternate.rawValue) == CGEventFlags.maskAlternate.rawValue &&
+            //   (event.flags.rawValue & (CGEventFlags.maskShift.rawValue | CGEventFlags.maskControl.rawValue | CGEventFlags.maskCommand.rawValue)) == 0 {
+            //    logger.debug("maskAlternate")
+            //}
+            //logger.debug("Option rawValue=\(CGEventFlags.maskAlternate.rawValue)")
 
             // var keyCode = event.getIntegerValueField(.keyboardEventKeycode)
             //if keyCode == 49 {

src/Helpers.swift

@@ -1,6 +1,67 @@
 import AppKit
+import Carbon
+import OSLog
 
-func systemImage(_ name: String, _ size: NSFont.TextStyle, _ scale: NSImage.SymbolScale, _ configuration: NSImage.SymbolConfiguration) -> NSImage? {
+fileprivate let logger = Logger(
+    subsystem: Bundle.main.bundleIdentifier!,
+    category: String("Helpers")
+)
+
+struct Program {
+    let path: String
+    let name: String
+    let ext: String
+}
+
+func keyName(virtualKeyCode: UInt16) -> String? {
+    let maxNameLength = 4
+    var nameBuffer = [UniChar](repeating: 0, count : maxNameLength)
+    var nameLength = 0
+
+    let modifierKeys = UInt32(alphaLock >> 8) & 0xFF // Caps Lock
+    var deadKeys: UInt32 = 0
+    let keyboardType = UInt32(LMGetKbdType())
+
+    //let source =
+    //    TISCopyCurrentKeyboardLayoutInputSource().takeRetainedValue()
+    let source = TISCopyInputSourceForLanguage("en-US" as CFString)
+        .takeRetainedValue();
+    guard let ptr = TISGetInputSourceProperty(source,
+        kTISPropertyUnicodeKeyLayoutData)
+    else {
+        logger.log("Could not get keyboard layout data")
+        return nil
+    }
+    let layoutData = Unmanaged<CFData>.fromOpaque(ptr)
+        .takeUnretainedValue() as Data
+    let osStatus = layoutData.withUnsafeBytes {
+        UCKeyTranslate(
+            $0.bindMemory(to: UCKeyboardLayout.self).baseAddress,
+            virtualKeyCode, UInt16(kUCKeyActionDown), modifierKeys,
+            keyboardType, UInt32(kUCKeyTranslateNoDeadKeysMask),
+            &deadKeys, maxNameLength, &nameLength, &nameBuffer)
+    }
+    guard osStatus == noErr else {
+        logger.debug("Code: \(virtualKeyCode) Status: \(osStatus)")
+        return nil
+    }
+
+    // NOTE: This is way too specific. This will need an additional func
+    //       flag or be re-written to a more generic version if it's going
+    //       to be used for something other than hot key representation.
+    var character = String(utf16CodeUnits: nameBuffer, count: nameLength)
+    if character == " " {
+        character = "␣"
+    } else {
+        character = character.uppercased()
+    }
+    return character
+}
+
+func systemImage(_ name: String, _ size: NSFont.TextStyle,
+    _ scale: NSImage.SymbolScale,
+    _ configuration: NSImage.SymbolConfiguration) -> NSImage?
+{
     return NSImage(systemSymbolName: name, accessibilityDescription: nil)?
         .withSymbolConfiguration(
             NSImage.SymbolConfiguration(textStyle: size, scale: scale)

src/HotKeyManager.swift

@@ -0,0 +1,86 @@
+import Carbon
+import OSLog
+
+final class HotKeyManager {
+    fileprivate static let logger = Logger(
+        subsystem: Bundle.main.bundleIdentifier!,
+        //category: String(describing: HotKeyManager.self)
+        category: String(describing: AppDelegate.self)
+    )
+
+    static let shared = HotKeyManager()
+
+    private var eventType = EventTypeSpec(
+        eventClass: OSType(kEventClassKeyboard),
+        eventKind: UInt32(kEventHotKeyPressed))
+    private var eventHandlerRef: EventHandlerRef?
+    public var handler: EventHandlerUPP?
+
+    private var hotKeyRef: EventHotKeyRef?
+    private let hotKeyID: EventHotKeyID = EventHotKeyID(
+        signature: OSType("grap".fourCharCodeValue), id: 1)
+
+    private init() {}
+
+    deinit {}
+
+    // TODO: Handle errors.
+    public func enable() {
+        if eventHandlerRef != nil {
+            disable()
+        }
+
+        let err = InstallEventHandler(
+            GetApplicationEventTarget(), handler, 1, &eventType,
+            nil, &eventHandlerRef)
+        if err == noErr {
+            Self.logger.debug("Installed event handler.")
+        } else {
+            Self.logger.error("Failed to install event handler.")
+        }
+    }
+
+    public func disable() {
+        guard eventHandlerRef != nil else { return }
+        let err = RemoveEventHandler(eventHandlerRef)
+        if err == noErr {
+            eventHandlerRef = nil // WARNING: Does it remove no matter
+                                  //          what on error?
+            Self.logger.debug("Removed event handler.")
+        } else {
+            Self.logger.error("Failed to remove event handler.")
+        }
+    }
+
+    // TODO: Handle errors.
+    // NOTE: Multiple modifiers should be ORed.
+    public func registerHotKey(key: Int, modifiers: Int) {
+        // GetEventDispatcherTarget
+        if hotKeyRef != nil {
+            unregisterHotKey()
+        }
+
+        let err = RegisterEventHotKey(
+            UInt32(key), UInt32(modifiers), hotKeyID,
+            GetApplicationEventTarget(), UInt32(kEventHotKeyNoOptions),
+            &hotKeyRef)
+        if err == noErr {
+            Self.logger.debug("Registered hot key.")
+        } else {
+            Self.logger.error("Failed to register hot key.")
+        }
+    }
+
+    // TODO: Handle errors.
+    public func unregisterHotKey() {
+        guard hotKeyRef != nil else { return }
+        let err = UnregisterEventHotKey(hotKeyRef)
+        if err == noErr {
+            hotKeyRef = nil // WARNING: Does it unregister no matter
+                            //          what on error?
+            Self.logger.debug("Successfully unregestered hot key.")
+        } else {
+            Self.logger.error("Failed to unregester hot key.")
+        }
+    }
+}

src/KeyDetectorButton.swift

@@ -0,0 +1,42 @@
+import AppKit
+import Carbon
+import OSLog
+
+protocol KeyDetectorButtonDelegate: AnyObject {
+    func keyWasSet(to keyCode: Int)
+}
+
+final class KeyDetectorButton: NSButton {
+    var defaultKey: Int?
+
+    weak var delegate: KeyDetectorButtonDelegate?
+
+    override var acceptsFirstResponder: Bool { true }
+
+    // This removes default bahavior from NSButton, thus allowing mouse up
+    // events.
+    override func mouseDown(with event: NSEvent) {}
+
+    override func mouseUp(with event: NSEvent) {
+        self.window?.makeFirstResponder(self)
+    }
+
+    override func keyDown(with event: NSEvent) {
+        if event.keyCode == kVK_Escape || event.keyCode == kVK_Return {
+        } else if event.keyCode == kVK_Delete {
+            if let key = defaultKey,
+               let character = keyName(virtualKeyCode: UInt16(key))
+            {
+                title = character
+            }
+        } else {
+            if let character =
+                keyName(virtualKeyCode: UInt16(event.keyCode))
+            {
+                title = character
+            }
+            delegate?.keyWasSet(to: Int(event.keyCode))
+        }
+        self.window?.makeFirstResponder(nil)
+    }
+}

src/Makefile

@@ -9,6 +9,8 @@ EXEC = Grapp
 
 SRCMODULES = Helpers.swift EditableNSTextField.swift EventMonitor.swift \
 	GlobalEventTap.swift PopoverPanel.swift SearchViewController.swift \
+	SettingsViewController.swift HotKeyManager.swift \
+	KeyDetectorButton.swift PathManager.swift MyTableCellView.swift \
 	AppDelegate.swift main.swift
 ARMOBJMODULES = $(addprefix ./arm64/,$(SRCMODULES:.swift=.o))
 X86OBJMODULES = $(addprefix ./x86_64/,$(SRCMODULES:.swift=.o))
@@ -17,17 +19,24 @@ LIBS =
 
 FRAMEWORKS = -framework AppKit -framework ServiceManagement
 
+# HACK: Target is getting touched because timestamps of the generated
+#       object file don't change unless there's an actual change in the
+#       outputted object code. This results in this target running every
+#       single time. I'm not sure whether that's the exact reason, but
+#       I can't imagine why timestamps wouldn't change. When clang
+#       generates same exact executable, timestamps do change.
 ./arm64/%.o: %.swift
 	swift -frontend -c -target arm64-apple-macos$(MACOS_VERSION) $(FLAGS) \
 	-primary-file $< $(filter-out $<, $(SRCMODULES)) $(LIBS) $(FRAMEWORKS) -sdk $(SDK) \
 		-module-name $(EXEC) -o $@ -emit-module
-
+	@touch $@
 
 ifdef UNIVERSAL
 ./x86_64/%.o: %.swift
 	@swift -frontend -c -target x86_64-apple-macos$(MACOS_VERSION) \
 		$(FLAGS) -primary-file $< $(filter-out $<, $(SRCMODULES)) $(LIBS) $(FRAMEWORKS) \
 		-sdk $(SDK) -module-name $(EXEC) -o $@ -emit-module
+	@touch $@
 endif
 
 ./arm64/$(EXEC): $(ARMOBJMODULES)

src/MyTableCellView.swift

@@ -0,0 +1,107 @@
+import AppKit
+
+protocol MyTableCellViewDelegate: AnyObject {
+    func selectionButtonClicked(tag: Int)
+    func titleFieldTextChanged(tag: Int, text: String)
+    func titleFieldFinishedEditing(tag: Int, text: String)
+}
+
+class MyTableCellView: NSTableCellView, NSTextFieldDelegate {
+    var id: Int = -1
+    weak var delegate: MyTableCellViewDelegate?
+
+    private(set) var isEditing = false
+
+    public var titleField: NSTextField = {
+        let field = NSTextField()
+        field.isEditable = false
+        field.maximumNumberOfLines = 1
+        field.lineBreakMode = .byTruncatingTail
+        field.isBezeled = false
+        field.drawsBackground = false
+        field.translatesAutoresizingMaskIntoConstraints = false
+        return field
+    }()
+
+    var selectionButton: NSButton = {
+        let button = NSButton()
+        button.image = systemImage("hand.point.up.fill", .headline, .large,
+            .init(paletteColors: [.white, .systemRed]))
+        button.isBordered = false
+        button.sizeToFit()
+        button.toolTip = "Select Path"
+        button.translatesAutoresizingMaskIntoConstraints = false
+        return button
+    }()
+
+    override init(frame frameRect: NSRect) {
+        super.init(frame: frameRect)
+
+        titleField.delegate = self
+
+        selectionButton.target = self
+        selectionButton.action = #selector(makeSelection)
+
+        addSubview(titleField)
+        addSubview(selectionButton)
+
+        titleField.setContentHuggingPriority(.defaultLow, for: .horizontal)
+        titleField.setContentCompressionResistancePriority(.defaultLow,
+            for: .horizontal)
+
+        NSLayoutConstraint.activate([
+            //titleField.topAnchor.constraint(equalTo: topAnchor),
+            //titleField.bottomAnchor.constraint(equalTo: bottomAnchor),
+            titleField.centerYAnchor.constraint(equalTo: centerYAnchor),
+            titleField.leadingAnchor.constraint(equalTo: leadingAnchor),
+            titleField.trailingAnchor.constraint(
+                equalTo: selectionButton.leadingAnchor),
+
+            selectionButton.centerYAnchor.constraint(
+                equalTo: centerYAnchor),
+            selectionButton.trailingAnchor.constraint(
+                equalTo: trailingAnchor),
+        ])
+    }
+
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+
+    @objc
+    private func makeSelection() {
+        delegate?.selectionButtonClicked(tag: id)
+    }
+
+    public func startEditing() {
+        isEditing = true
+        titleField.isEditable = true
+        window?.makeFirstResponder(titleField)
+    }
+
+    public func stopEditing() {
+        isEditing = false
+        titleField.isEditable = false
+        window?.makeFirstResponder(nil)
+    }
+
+    func controlTextDidChange(_ obj: Notification) {
+        delegate?.titleFieldTextChanged(tag: id,
+            text: titleField.stringValue)
+    }
+
+    func control(_ control: NSControl, textView: NSTextView,
+        doCommandBy commandSelector: Selector) -> Bool
+    {
+        if commandSelector == #selector(NSResponder.insertNewline(_:)) {
+            stopEditing()
+            delegate?.titleFieldFinishedEditing(tag: id,
+                text: titleField.stringValue)
+            return true
+        } else if commandSelector == #selector(NSResponder.insertTab(_:)) {
+            return true
+        }
+
+        return false
+    }
+}

src/PathManager.swift

@@ -0,0 +1,85 @@
+import AppKit
+import OSLog
+
+final class PathManager {
+    fileprivate static let logger = Logger(
+        subsystem: Bundle.main.bundleIdentifier!,
+        category: String(describing: PathManager.self)
+    )
+
+    static let shared = PathManager()
+
+    // TODO: Filesystem events to watch changes on these directories and
+    //       rebuild index when needed.
+    // NOTE: These are default paths where MacOS's default programs are
+    //       stored. This list should be updated if something changes in
+    //       newer MacOS version.
+    static let defaultPaths = ["/Applications", "/System/Applications",
+        "/System/Applications/Utilities", "/System/Library/CoreServices",
+        "/Applications/Xcode.app/Contents/Applications",
+        "/System/Library/CoreServices/Applications"]
+    var userPaths: [String] = []
+    private(set) var programs: [Program] = []
+
+    private let fileManager = FileManager.default
+
+    private init() {
+        if let paths =
+            UserDefaults.standard.stringArray(forKey: "programPaths")
+        {
+            for path in paths {
+                addPath(path)
+            }
+        } else {
+            userPaths += Self.defaultPaths
+        }
+    }
+
+    deinit {}
+
+    public func addPath(_ path: String) {
+        if !userPaths.contains(path) {
+            userPaths.append(path)
+        }
+    }
+
+    public func removePath(_ path: String) {
+        userPaths.removeAll { $0 == path }
+    }
+
+    public func removeEmpty() {
+        userPaths.removeAll { $0.isEmpty }
+    }
+
+    public func savePaths() {
+        UserDefaults.standard.set(userPaths, forKey: "programPaths")
+    }
+
+    public func reset() {
+        userPaths = []
+        userPaths += Self.defaultPaths
+        savePaths()
+    }
+
+    public func rebuildIndex() {
+        programs.removeAll(keepingCapacity: true)
+        for path in userPaths {
+            do {
+                let items = try fileManager.contentsOfDirectory(
+                    atPath: path)
+                for item in items {
+                    let name = String(item.dropLast(4))
+                    if item.hasSuffix(".app") {
+                        if !programs.contains(where: { name == $0.name }) {
+                            programs.append(
+                                Program(
+                                    path: path, name: name, ext: ".app"))
+                        }
+                    }
+                }
+            } catch {
+                Self.logger.error("Error reading directory: \(error.localizedDescription, privacy: .public)")
+            }
+        }
+    }
+}

src/PopoverPanel.swift

@@ -12,15 +12,16 @@ class PopoverPanel: NSPanel {
     init(viewController: NSViewController) {
         super.init(
             contentRect: CGRect(x: 0, y: 0, width: 100, height: 100),
-            styleMask: [.titled, .nonactivatingPanel, .utilityWindow, .fullSizeContentView],
+            styleMask: [.titled, .nonactivatingPanel, .utilityWindow,
+                        .fullSizeContentView],
             backing: .buffered,
             defer: false
         )
         super.contentViewController = viewController
         
         title = ""
-        //isMovable = false
-        isMovableByWindowBackground = false
+        isMovable = true
+        isMovableByWindowBackground = true
         isFloatingPanel = true
         isOpaque = false
         level = .statusBar
@@ -28,7 +29,8 @@ class PopoverPanel: NSPanel {
         titlebarAppearsTransparent = true
         
         animationBehavior = .none
-        collectionBehavior = [.moveToActiveSpace, .fullScreenAuxiliary, .transient]
+        collectionBehavior = [.moveToActiveSpace, .fullScreenAuxiliary,
+                              .transient]
         isReleasedWhenClosed = false
         hidesOnDeactivate = false
         
@@ -41,13 +43,21 @@ class PopoverPanel: NSPanel {
         Self.logger.debug("performKeyEquivalent keyCode=\(event.keyCode)")
         let commandKey = NSEvent.ModifierFlags.command.rawValue
 
+        // TODO: Make these depend on virtual keycodes, instead of
+        //       characters.
         if event.type == NSEvent.EventType.keyDown {
-            if (event.modifierFlags.rawValue & NSEvent.ModifierFlags.deviceIndependentFlagsMask.rawValue) == commandKey,
-               event.charactersIgnoringModifiers! == "w" {
+            if (event.modifierFlags.rawValue &
+                NSEvent.ModifierFlags.deviceIndependentFlagsMask.rawValue)
+                == commandKey,
+                event.charactersIgnoringModifiers! == "w"
+            {
                 resignKey()
                 return true
-            } else if (event.modifierFlags.rawValue & NSEvent.ModifierFlags.deviceIndependentFlagsMask.rawValue) == commandKey,
-               event.charactersIgnoringModifiers! == "q" {
+            } else if (event.modifierFlags.rawValue &
+                NSEvent.ModifierFlags.deviceIndependentFlagsMask.rawValue)
+                == commandKey,
+                event.charactersIgnoringModifiers! == "q"
+            {
                 NSApplication.shared.terminate(self)
                 return true
             } else if event.keyCode == 53 {

src/SearchViewController.swift

@@ -8,7 +8,9 @@ fileprivate enum ViewConstants {
     static let spacing40: CGFloat = 40
 }
 
-class SearchViewController: NSViewController, NSTextFieldDelegate {
+class SearchViewController: NSViewController, NSTextFieldDelegate,
+    NSPopoverDelegate
+{
     fileprivate static let logger = Logger(
         subsystem: Bundle.main.bundleIdentifier!,
         category: String(describing: SearchViewController.self)
@@ -16,10 +18,17 @@ class SearchViewController: NSViewController, NSTextFieldDelegate {
 
     var foundProgram: Program? = nil
 
+    private var settingsPopover: NSPopover = {
+        let popover = NSPopover()
+        popover.contentViewController = SettingsViewController()
+        popover.behavior = .transient
+        return popover
+    }()
+
     private var appIconImage: NSImageView = {
-        //let image = NSImageView(image: NSApp.applicationIconImage)
         let image = NSImageView()
-        image.image = NSWorkspace.shared.icon(forFile: Bundle.main.bundlePath)
+        image.image = 
+            NSWorkspace.shared.icon(forFile: Bundle.main.bundlePath)
         image.imageScaling = .scaleAxesIndependently
         image.translatesAutoresizingMaskIntoConstraints = false
         return image
@@ -40,14 +49,17 @@ class SearchViewController: NSViewController, NSTextFieldDelegate {
         textField.isBezeled = false
         textField.drawsBackground = false
         textField.alignment = .left
-        textField.font = NSFont.systemFont(ofSize: NSFontDescriptor.preferredFontDescriptor(forTextStyle: .body).pointSize, weight: .bold)
+        textField.font = NSFont.systemFont(
+            ofSize: NSFontDescriptor.preferredFontDescriptor(
+                forTextStyle: .body).pointSize, weight: .bold)
         textField.translatesAutoresizingMaskIntoConstraints = false
         return textField
     }()
 
     private var settingsButton: NSButton = {
         let button = NSButton()
-        button.image = systemImage("gearshape.fill", .title2, .large, .init(paletteColors: [.white, .systemRed]))
+        button.image = systemImage("gearshape.fill", .title2, .large,
+            .init(paletteColors: [.white, .systemRed]))
         button.isBordered = false
         button.action = #selector(openSettings)
         button.sizeToFit()
@@ -56,7 +68,6 @@ class SearchViewController: NSViewController, NSTextFieldDelegate {
         return button
     }()
 
-
     private func addSubviews() {
         view.addSubview(appIconImage)
         view.addSubview(searchInput)
@@ -67,23 +78,42 @@ class SearchViewController: NSViewController, NSTextFieldDelegate {
     private func setConstraints() {
         NSLayoutConstraint.activate([
             appIconImage.widthAnchor.constraint(equalToConstant: 70),
-            appIconImage.heightAnchor.constraint(equalTo: appIconImage.widthAnchor, multiplier: 1),
+            appIconImage.heightAnchor.constraint(
+                equalTo: appIconImage.widthAnchor, multiplier: 1),
 
-            appIconImage.topAnchor.constraint(equalTo: view.topAnchor, constant: ViewConstants.spacing20),
-            appIconImage.bottomAnchor.constraint(equalTo: view.bottomAnchor, constant: -ViewConstants.spacing10),
-            appIconImage.leadingAnchor.constraint(equalTo: view.leadingAnchor, constant: ViewConstants.spacing10),
+            appIconImage.topAnchor.constraint(equalTo: view.topAnchor,
+                constant: ViewConstants.spacing20),
+            appIconImage.bottomAnchor.constraint(
+                equalTo: view.bottomAnchor,
+                constant: -ViewConstants.spacing10),
+            appIconImage.leadingAnchor.constraint(
+                equalTo: view.leadingAnchor,
+                constant: ViewConstants.spacing10),
 
             searchInput.widthAnchor.constraint(equalToConstant: 300),
-            searchInput.topAnchor.constraint(equalTo: appIconImage.topAnchor),
-            searchInput.leadingAnchor.constraint(equalTo: appIconImage.trailingAnchor, constant: ViewConstants.spacing10),
+            searchInput.topAnchor.constraint(
+                equalTo: appIconImage.topAnchor),
+            searchInput.leadingAnchor.constraint(
+                equalTo: appIconImage.trailingAnchor,
+                constant: ViewConstants.spacing10),
 
-            settingsButton.firstBaselineAnchor.constraint(equalTo: searchInput.firstBaselineAnchor),
-            settingsButton.leadingAnchor.constraint(equalTo: searchInput.trailingAnchor, constant: ViewConstants.spacing10),
-            settingsButton.trailingAnchor.constraint(equalTo: view.trailingAnchor, constant: -ViewConstants.spacing10),
+            settingsButton.firstBaselineAnchor.constraint(
+                equalTo: searchInput.firstBaselineAnchor),
+            settingsButton.leadingAnchor.constraint(
+                equalTo: searchInput.trailingAnchor,
+                constant: ViewConstants.spacing10),
+            settingsButton.trailingAnchor.constraint(
+                equalTo: view.trailingAnchor,
+                constant: -ViewConstants.spacing10),
 
-            programsLabel.topAnchor.constraint(equalTo: searchInput.bottomAnchor, constant: ViewConstants.spacing10),
-            programsLabel.leadingAnchor.constraint(equalTo: appIconImage.trailingAnchor, constant: ViewConstants.spacing10),
-            programsLabel.trailingAnchor.constraint(equalTo: searchInput.trailingAnchor),
+            programsLabel.topAnchor.constraint(
+                equalTo: searchInput.bottomAnchor,
+                constant: ViewConstants.spacing10),
+            programsLabel.leadingAnchor.constraint(
+                equalTo: appIconImage.trailingAnchor,
+                constant: ViewConstants.spacing10),
+            programsLabel.trailingAnchor.constraint(
+                equalTo: searchInput.trailingAnchor),
 
         ])
     }
@@ -91,6 +121,8 @@ class SearchViewController: NSViewController, NSTextFieldDelegate {
     override func viewDidLoad() {
         super.viewDidLoad()
 
+        settingsPopover.delegate = self
+
         searchInput.delegate = self
 
         addSubviews()
@@ -101,27 +133,39 @@ class SearchViewController: NSViewController, NSTextFieldDelegate {
         super.viewDidAppear()
 
         self.view.window?.center()
+
+        // searchInput should select all text whenever window appears.
+        NSApp.sendAction(#selector(NSResponder.selectAll(_:)),
+            to: nil, from: self)
     }
 
     override func loadView() {
         self.view = NSView()
     }
 
-    //private func fetchIcon() {
-    //    for key in resultPaths.keys {
-    //    }
-    //}
-
     @objc
-    private func openSettings() {
+    func openSettings() {
+        // HACK: This is an interseting behavior. When NSPopover appears 
+        //       the first time, it always displays in the wrong location;
+        //       however, showing it twice does result in the right
+        //       location.
+        settingsPopover.show(relativeTo: settingsButton.bounds,
+            of: settingsButton, preferredEdge: .maxY)
+        settingsPopover.show(relativeTo: settingsButton.bounds,
+            of: settingsButton, preferredEdge: .maxY)
     }
 
     func controlTextDidChange(_ obj: Notification) {
+        guard let searchInput = obj.object as? EditableNSTextField
+        else { return }
+
         var list = ""
 
-        let programs = delegate.programs
+        let programs = PathManager.shared.programs
         for program in programs {
-            if program.name.lowercased().contains(searchInput.stringValue.lowercased()) {
+            if program.name.lowercased().contains(
+                searchInput.stringValue.lowercased())
+            {
                 if !list.isEmpty {
                     list += ", "
                 }
@@ -134,37 +178,47 @@ class SearchViewController: NSViewController, NSTextFieldDelegate {
         }
         
         if let program = foundProgram {
-            programsLabel.stringValue = program.name + program.ext
+            programsLabel.stringValue =
+                program.name + program.ext + " (\(program.path))"
 
-            let url = URL(fileURLWithPath: program.path).appendingPathComponent(program.name+program.ext)
+            let url = URL(fileURLWithPath: program.path)
+                .appendingPathComponent(program.name+program.ext)
             appIconImage.image = NSWorkspace.shared.icon(forFile: url.path)
         } else {
             programsLabel.stringValue = ""
 
-            appIconImage.image = NSWorkspace.shared.icon(forFile: Bundle.main.bundlePath)
+            appIconImage.image =
+                NSWorkspace.shared.icon(forFile: Bundle.main.bundlePath)
         }
     }
 
-    func control(_ control: NSControl, textView: NSTextView, doCommandBy commandSelector: Selector) -> Bool {
+    func control(_ control: NSControl, textView: NSTextView,
+        doCommandBy commandSelector: Selector) -> Bool
+    {
         if commandSelector == #selector(NSResponder.insertNewline(_:)) {
             if let program = foundProgram {
-                let url = URL(fileURLWithPath: program.path).appendingPathComponent(program.name+program.ext)
+                let url = URL(fileURLWithPath: program.path)
+                    .appendingPathComponent(program.name+program.ext)
                 let config = NSWorkspace.OpenConfiguration()
-                NSWorkspace.shared.openApplication(at: url, configuration: config, completionHandler: { [weak self] application, error in
+
+                NSWorkspace.shared.openApplication(at: url,
+                    configuration: config)
+                { [weak self] application, error in
                     if let error = error {
-                        Self.logger.debug("Failed to open application: \(error.localizedDescription)")
+                        Self.logger.debug("\(error.localizedDescription)")
                     } else {
-                        Self.logger.debug("Application opened successfully")
+                        Self.logger.debug("Program opened successfully")
                         DispatchQueue.main.async {
                             if let window = self?.view.window {
                                 window.resignKey()
                             }
                         }
                     }
-                })
+                }
             }
-            // TODO: Send this whenever SearchViewController becomes visible.
-            NSApp.sendAction(#selector(NSResponder.selectAll(_:)), to: nil, from: self)
+            NSApp.sendAction(#selector(NSResponder.selectAll(_:)),
+                to: nil, from: self)
+
             return true
         } else if commandSelector == #selector(NSResponder.insertTab(_:)) {
             return true
@@ -172,4 +226,12 @@ class SearchViewController: NSViewController, NSTextFieldDelegate {
 
         return false
     }
+
+    func popoverWillShow(_ notification: Notification) {
+        searchInput.abortEditing()
+    }
+
+    func popoverWillClose(_ notification: Notification) {
+        searchInput.becomeFirstResponder()
+    }
 }

src/SettingsViewController.swift

@@ -0,0 +1,572 @@
+import AppKit
+import Carbon
+import ServiceManagement
+import OSLog
+
+fileprivate enum ViewConstants {
+    static let spacing2: CGFloat = 2
+    static let spacing5: CGFloat = 2
+    static let spacing10: CGFloat = 10
+    static let spacing20: CGFloat = 20
+    static let spacing40: CGFloat = 40
+}
+
+class SettingsViewController: NSViewController, NSTextFieldDelegate,
+    KeyDetectorButtonDelegate, NSTableViewDataSource, NSTableViewDelegate,
+    MyTableCellViewDelegate
+{
+    fileprivate static let logger = Logger(
+        subsystem: Bundle.main.bundleIdentifier!,
+        category: String(describing: SettingsViewController.self)
+    )
+
+    private var recording = false
+
+    // NOTE: This is the default shortcut. If you were to change it, don't
+    //       forget to change other places in this file and delegate, too.
+    private var keyCode = Int(kVK_Space)
+    private var modifiers = Int(optionKey)
+
+    // NOTE:  PERF: This is very slow to initialize because it creates a
+    //             a new process. This also cannot be done on a separate
+    //             thread. This sucks because the program now takes
+    //             considerably longer to launch.
+    private let dirPicker: NSOpenPanel = {
+        let panel = NSOpenPanel()
+        panel.message = "Select a directory to search applications in . . ."
+        panel.canChooseDirectories = true
+        panel.canChooseFiles = false
+        panel.allowsMultipleSelection = false
+        return panel
+    }()
+
+    private var shortcutsLabel: NSTextField = {
+        let textField = NSTextField(labelWithString: "Shortcut")
+        textField.font = NSFont.systemFont(
+            ofSize: NSFontDescriptor.preferredFontDescriptor(
+                forTextStyle: .title2).pointSize, weight: .bold)
+        textField.translatesAutoresizingMaskIntoConstraints = false
+        return textField
+    }()
+
+    private var ctrlButton: NSButton = {
+        let button = NSButton()
+            button.title = "⌃"
+            button.action = #selector(handleModifiers)
+            button.setButtonType(.pushOnPushOff)
+            button.sizeToFit()
+            button.bezelStyle = .rounded
+            button.translatesAutoresizingMaskIntoConstraints = false
+            return button
+    }()
+
+    private var cmdButton: NSButton = {
+        let button = NSButton()
+        button.title = "⌘"
+        button.action = #selector(handleModifiers)
+        button.setButtonType(.pushOnPushOff)
+        button.sizeToFit()
+        button.bezelStyle = .rounded
+        button.translatesAutoresizingMaskIntoConstraints = false
+        return button
+    }()
+
+    private var optButton: NSButton = {
+        let button = NSButton()
+        button.title = "⌥"
+        button.action = #selector(handleModifiers)
+        button.setButtonType(.pushOnPushOff)
+        button.sizeToFit()
+        button.bezelStyle = .rounded
+        button.translatesAutoresizingMaskIntoConstraints = false
+        return button
+    }()
+
+    private var shiftButton: NSButton = {
+        let button = NSButton()
+        button.title = "⇧"
+        button.action = #selector(handleModifiers)
+        button.setButtonType(.pushOnPushOff)
+        button.sizeToFit()
+        button.bezelStyle = .rounded
+        button.translatesAutoresizingMaskIntoConstraints = false
+        return button
+    }()
+
+    private var plusLabel: NSTextField = {
+        let textField = NSTextField()
+        textField.stringValue = "+"
+        textField.isEditable = false
+        textField.isBezeled = false
+        textField.drawsBackground = false
+        textField.alignment = .center
+        textField.font = NSFont.systemFont(
+            ofSize: NSFontDescriptor.preferredFontDescriptor(
+                forTextStyle: .body).pointSize, weight: .bold)
+        textField.translatesAutoresizingMaskIntoConstraints = false
+        return textField
+    }()
+
+    private var recordButton: KeyDetectorButton = {
+        let button = KeyDetectorButton()
+        button.title = "Record"
+        button.sizeToFit()
+        button.bezelStyle = .rounded
+        button.translatesAutoresizingMaskIntoConstraints = false
+        return button
+    }()
+
+    private var pathsLabel: NSTextField = {
+        let textField =
+            NSTextField(labelWithString: "Application Directories")
+        textField.font = NSFont.systemFont(
+            ofSize: NSFontDescriptor.preferredFontDescriptor(
+                forTextStyle: .title2).pointSize, weight: .bold)
+        textField.translatesAutoresizingMaskIntoConstraints = false
+        return textField
+    }()
+
+    private var tableScrollView: NSScrollView = {
+        let scroll = NSScrollView()
+        scroll.drawsBackground = false
+        scroll.translatesAutoresizingMaskIntoConstraints = false
+        return scroll
+    }()
+
+    private var pathsTableView: NSTableView = {
+        let table = NSTableView()
+
+        table.backgroundColor = .clear
+
+        table.doubleAction = #selector(editItem)
+
+        table.headerView = nil
+        table.allowsMultipleSelection = true
+        table.allowsColumnReordering = false
+        table.allowsColumnResizing = false
+        table.allowsColumnSelection = false
+        table.addTableColumn(NSTableColumn(
+            identifier: NSUserInterfaceItemIdentifier("Paths")))
+
+        //rowHeight cgfloat must see doc
+
+        table.translatesAutoresizingMaskIntoConstraints = false
+        return table
+    }()
+
+    private var pathsControl: NSSegmentedControl = {
+        let control = NSSegmentedControl()
+        control.segmentCount = 2
+        control.segmentStyle = .roundRect
+
+        control.setImage(
+            NSImage(systemSymbolName: "plus",
+            accessibilityDescription: nil), forSegment: 0)
+        control.setImage(
+            NSImage(systemSymbolName: "minus",
+            accessibilityDescription: nil), forSegment: 1)
+
+        control.setToolTip("Add Path", forSegment: 0)
+        control.setToolTip("Remove Path", forSegment: 1)
+        control.trackingMode = .momentary
+
+        control.translatesAutoresizingMaskIntoConstraints = false
+        return control
+    }()
+
+    private var launchAtLoginButton: NSButton = {
+        let button = NSButton()
+        button.title = "Launch at login - OFF"
+        button.action = #selector(launchAtLogin)
+        button.setButtonType(.toggle)
+        button.sizeToFit()
+        button.bezelStyle = .rounded
+        button.isBordered = false
+        button.translatesAutoresizingMaskIntoConstraints = false
+        return button
+    }()
+
+    private var resetAllButton: NSButton = {
+        let button = NSButton()
+        button.title = "Reset"
+        button.action = #selector(reset)
+        button.setButtonType(.momentaryLight)
+        button.sizeToFit()
+        button.bezelStyle = .rounded
+        button.isBordered = false
+        button.translatesAutoresizingMaskIntoConstraints = false
+        return button
+    }()
+
+    private func addSubviews() {
+        view.addSubview(shortcutsLabel)
+        view.addSubview(ctrlButton)
+        view.addSubview(cmdButton)
+        view.addSubview(optButton)
+        view.addSubview(shiftButton)
+        view.addSubview(plusLabel)
+        view.addSubview(recordButton)
+
+        view.addSubview(pathsLabel)
+        view.addSubview(tableScrollView)
+        view.addSubview(pathsControl)
+
+        view.addSubview(launchAtLoginButton)
+        view.addSubview(resetAllButton)
+    }
+
+    private func setConstraints() {
+        NSLayoutConstraint.activate([
+            shortcutsLabel.topAnchor.constraint(
+                equalTo: view.topAnchor,
+                constant: ViewConstants.spacing10),
+            shortcutsLabel.leadingAnchor.constraint(
+                equalTo: view.leadingAnchor,
+                constant: ViewConstants.spacing10),
+
+            ctrlButton.topAnchor.constraint(
+                equalTo: shortcutsLabel.bottomAnchor,
+                constant: ViewConstants.spacing10),
+            ctrlButton.leadingAnchor.constraint(
+                equalTo: shortcutsLabel.leadingAnchor),
+
+            cmdButton.centerYAnchor.constraint(
+                equalTo: ctrlButton.centerYAnchor),
+            cmdButton.leadingAnchor.constraint(
+                equalTo: ctrlButton.trailingAnchor,
+                constant: ViewConstants.spacing5),
+
+            optButton.centerYAnchor.constraint(
+                equalTo: ctrlButton.centerYAnchor),
+            optButton.leadingAnchor.constraint(
+                equalTo: cmdButton.trailingAnchor,
+                constant: ViewConstants.spacing5),
+
+            shiftButton.centerYAnchor.constraint(
+                equalTo: ctrlButton.centerYAnchor),
+            shiftButton.leadingAnchor.constraint(
+                equalTo: optButton.trailingAnchor,
+                constant: ViewConstants.spacing5),
+
+            plusLabel.centerYAnchor.constraint(
+                equalTo: ctrlButton.centerYAnchor),
+            plusLabel.leadingAnchor.constraint(
+                equalTo: shiftButton.trailingAnchor,
+                constant: ViewConstants.spacing5),
+
+            recordButton.widthAnchor.constraint(equalToConstant: 40),
+            recordButton.centerYAnchor.constraint(
+                equalTo: ctrlButton.centerYAnchor),
+            recordButton.leadingAnchor.constraint(
+                equalTo: plusLabel.trailingAnchor,
+                constant: ViewConstants.spacing5),
+
+            pathsLabel.topAnchor.constraint(
+                equalTo: ctrlButton.bottomAnchor,
+                constant: ViewConstants.spacing20),
+            pathsLabel.leadingAnchor.constraint(
+                equalTo: shortcutsLabel.leadingAnchor),
+
+            tableScrollView.widthAnchor.constraint(equalToConstant: 350),
+            tableScrollView.heightAnchor.constraint(equalToConstant: 100),
+            tableScrollView.topAnchor.constraint(
+                equalTo: pathsLabel.bottomAnchor),
+            tableScrollView.leadingAnchor.constraint(
+                equalTo: view.leadingAnchor),
+            tableScrollView.trailingAnchor.constraint(
+                equalTo: view.trailingAnchor),
+
+            pathsControl.topAnchor.constraint(
+                equalTo: tableScrollView.bottomAnchor,
+                constant: ViewConstants.spacing10),
+            pathsControl.leadingAnchor.constraint(
+                equalTo: view.leadingAnchor,
+                constant: ViewConstants.spacing10),
+
+            launchAtLoginButton.topAnchor.constraint(
+                equalTo: pathsControl.bottomAnchor,
+                constant: ViewConstants.spacing10),
+            launchAtLoginButton.trailingAnchor.constraint(
+                equalTo: resetAllButton.leadingAnchor,
+                constant: -ViewConstants.spacing10),
+
+            resetAllButton.centerYAnchor.constraint(
+                equalTo: launchAtLoginButton.centerYAnchor),
+            resetAllButton.trailingAnchor.constraint(
+                equalTo: view.trailingAnchor,
+                constant: -ViewConstants.spacing10),
+            resetAllButton.bottomAnchor.constraint(
+                equalTo: view.bottomAnchor,
+                constant: -ViewConstants.spacing10),
+        ])
+    }
+
+    override func viewDidLoad() {
+        super.viewDidLoad()
+
+        tableScrollView.documentView = pathsTableView
+
+        cmdButton.target = self
+        optButton.target = self
+        ctrlButton.target = self
+        shiftButton.target = self
+        recordButton.delegate = self
+        launchAtLoginButton.target = self
+        resetAllButton.target = self
+
+        recordButton.defaultKey = kVK_Space
+
+        recordButton.target = self
+
+        pathsTableView.dataSource = self
+        pathsTableView.delegate = self
+
+        pathsTableView.delegate = self
+
+        pathsControl.target = self
+        pathsControl.action = #selector(affectPaths(_:))
+
+        addSubviews()
+        setConstraints()
+    }
+
+    override func viewWillAppear() {
+        super.viewWillAppear()
+
+        // PERF: Maybe we shouldn't fetch it on every appearance?
+        //       Only do it in AppDelegate?
+        if let code =
+            UserDefaults.standard.object(forKey: "keyCode") as? Int
+        {
+            keyCode = code
+        }
+        if let mods =
+            UserDefaults.standard.object(forKey: "keyModifiers") as? Int
+        {
+            modifiers = mods
+        }
+
+        syncModifierButtons()
+        launchAtLoginStatus()
+    }
+
+    override func viewDidAppear() {
+        super.viewDidAppear()
+
+        self.view.window?.center()
+    }
+
+    override func viewWillDisappear() {
+        super.viewWillDisappear()
+
+        HotKeyManager.shared.registerHotKey(key: keyCode,
+            modifiers: modifiers)
+
+        UserDefaults.standard.set(keyCode, forKey: "keyCode")
+        UserDefaults.standard.set(modifiers, forKey: "keyModifiers")
+
+        PathManager.shared.savePaths()
+        PathManager.shared.rebuildIndex()
+    }
+
+    override func loadView() {
+        self.view = NSView()
+    }
+
+    @objc
+    private func handleModifiers() {
+        // NOTE: Revert to default modifier if none of the modifier
+        //       buttons are on.
+        if cmdButton.state != .on, optButton.state != .on,
+           ctrlButton.state != .on, shiftButton.state != .on
+        {
+            optButton.state = .on
+        }
+
+        detectModifers()
+    }
+
+    @objc
+    private func launchAtLogin() {
+        delegate.toggleLaunchAtLogin()
+        launchAtLoginStatus()
+    }
+
+    private func launchAtLoginStatus() {
+        if delegate.willLaunchAtLogin() {
+            launchAtLoginButton.title = "Launch at login - ON"
+            launchAtLoginButton.state = .on
+        } else {
+            launchAtLoginButton.title = "Launch at login - OFF"
+            launchAtLoginButton.state = .off
+        }
+    }
+
+    @objc
+    private func reset() {
+        keyCode = Int(kVK_Space)
+        modifiers = Int(optionKey)
+        HotKeyManager.shared.registerHotKey(key: keyCode, modifiers: modifiers)
+        UserDefaults.standard.set(keyCode, forKey: "keyCode")
+        UserDefaults.standard.set(modifiers, forKey: "keyModifiers")
+        syncModifierButtons()
+
+        PathManager.shared.reset()
+        pathsTableView.reloadData()
+    }
+
+    private func detectModifers() {
+        var mods = 0
+
+        if cmdButton.state == .on {
+            mods |= cmdKey
+        }
+        if optButton.state == .on {
+            mods |= optionKey
+        }
+        if ctrlButton.state == .on {
+            mods |= controlKey
+        }
+        if shiftButton.state == .on {
+            mods |= shiftKey
+        }
+
+        if mods == 0 {
+            mods |= optionKey
+        } else {
+            modifiers = mods
+        }
+    }
+
+    private func syncModifierButtons() {
+        ctrlButton.state = .off
+        cmdButton.state = .off
+        optButton.state = .off
+        shiftButton.state = .off
+
+        if modifiers & controlKey != 0 {
+            ctrlButton.state = .on
+        }
+        if modifiers & cmdKey != 0 {
+            cmdButton.state = .on
+        }
+        if modifiers & optionKey != 0 {
+            optButton.state = .on
+        }
+        if modifiers & shiftKey != 0 {
+            shiftButton.state = .on
+        }
+
+        if let character = keyName(virtualKeyCode: UInt16(keyCode)) {
+            recordButton.title = character
+        }
+    }
+
+    @objc
+    private func affectPaths(_ sender: NSSegmentedControl) {
+        // PERF: All of this could be written better.
+        let selectedSegment = sender.selectedSegment
+        switch selectedSegment {
+        case 0:
+            PathManager.shared.addPath("")
+            pathsTableView.reloadData()
+
+            let row = PathManager.shared.userPaths.count-1
+            pathsTableView.selectRowIndexes(IndexSet(integer: row),
+                byExtendingSelection: false)
+            pathsTableView.scrollRowToVisible(row)
+            (pathsTableView.view(atColumn: 0, row: row,
+                makeIfNecessary: false) as? MyTableCellView)?
+                    .startEditing()
+            break
+        case 1:
+            var toRemove: [String] = []
+            for row in pathsTableView.selectedRowIndexes {
+                toRemove.append(PathManager.shared.userPaths[row])
+            }
+            PathManager.shared.userPaths.removeAll(
+                where: { toRemove.contains($0) })
+            pathsTableView.reloadData()
+            break
+        default:
+            break
+        }
+    }
+
+    @objc
+    private func editItem(_ sender: NSTableView) {
+        pathsTableView.deselectAll(nil)
+        pathsTableView.selectRowIndexes(
+            IndexSet(integer: pathsTableView.clickedRow),
+            byExtendingSelection: false)
+
+        if let cell = pathsTableView.view(atColumn: 0,
+            row: pathsTableView.clickedRow,
+            makeIfNecessary: false) as? MyTableCellView
+        {
+            cell.startEditing()
+        }
+    }
+
+    func titleFieldFinishedEditing(tag: Int, text: String) {
+        PathManager.shared.userPaths[tag] = text
+        if PathManager.shared.userPaths[tag].isEmpty {
+            PathManager.shared.userPaths.remove(at: tag)
+            pathsTableView.reloadData()
+        }
+        pathsTableView.deselectAll(nil)
+    }
+
+    func titleFieldTextChanged(tag: Int, text: String) {
+    }
+
+    func keyWasSet(to keyCode: Int) {
+        self.keyCode = Int(keyCode)
+    }
+
+    func selectionButtonClicked(tag: Int) {
+        NSRunningApplication.current.activate(options: .activateAllWindows)
+        delegate.window.level = .normal
+
+        if dirPicker.runModal() == .OK {
+            if let url = dirPicker.url {
+                PathManager.shared.userPaths[tag] = url.path
+                pathsTableView.reloadData()
+            }
+        }
+
+        delegate.window.level = .statusBar
+        delegate.window.makeKeyAndOrderFront(nil)
+        if let controller =
+            delegate.window.contentViewController as?  SearchViewController
+        {
+            controller.openSettings()
+        }
+    }
+
+    func numberOfRows(in tableView: NSTableView) -> Int {
+        return PathManager.shared.userPaths.count
+    }
+
+    func tableView(_ tableView: NSTableView,
+        viewFor tableColumn: NSTableColumn?, row: Int) -> NSView?
+    {
+        let rect = NSRect(x: 0, y: 0,
+            width: tableColumn!.width, height: 20)
+        let cell = MyTableCellView(frame: rect)
+        cell.titleField.stringValue = PathManager.shared.userPaths[row]
+        cell.delegate = self
+        cell.id = row
+
+        return cell
+    }
+
+    func tableViewSelectionDidChange(_ notification: Notification) {
+/*
+        let selectedRow = tableView.selectedRow
+        if selectedRow >= 0 {
+            print("Selected: \(items[selectedRow])")
+        }
+*/
+    }
+}