78 lines
2.4 KiB
Swift
78 lines
2.4 KiB
Swift
import Carbon
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import OSLog
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final class HotKeyManager {
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static let shared = HotKeyManager()
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private var eventType =
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EventTypeSpec(eventClass: OSType(kEventClassKeyboard),
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eventKind: UInt32(kEventHotKeyPressed))
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private var eventHandlerRef: EventHandlerRef?
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public var handler: EventHandlerUPP?
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private var hotKeyRef: EventHotKeyRef?
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private let hotKeyID: EventHotKeyID =
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EventHotKeyID(signature: OSType("grap".fourCharCodeValue), id: 1)
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private init() {}
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deinit {}
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// TODO: Handle errors.
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public func enable() {
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if eventHandlerRef != nil {
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disable()
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}
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let err = InstallEventHandler(GetApplicationEventTarget(), handler,
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1, &eventType, nil, &eventHandlerRef)
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if err == noErr {
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print("Installed event handler.")
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} else {
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print("Failed to install event handler.")
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}
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}
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public func disable() {
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guard eventHandlerRef != nil else { return }
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let err = RemoveEventHandler(eventHandlerRef)
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if err == noErr {
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// WARNING: Does it remove no matter what on error?
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eventHandlerRef = nil
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print("Removed event handler.")
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} else {
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print("Failed to remove event handler.")
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}
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}
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// TODO: Handle errors.
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// NOTE: Multiple modifiers should be ORed.
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public func registerHotKey(key: Int, modifiers: Int) {
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if hotKeyRef != nil {
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unregisterHotKey()
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}
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let err = RegisterEventHotKey(UInt32(key), UInt32(modifiers),
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hotKeyID, GetApplicationEventTarget(),
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UInt32(kEventHotKeyNoOptions),
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&hotKeyRef)
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if err == noErr {
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print("Registered hot key.")
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} else {
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print("Failed to register hot key.")
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}
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}
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// TODO: Handle errors.
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public func unregisterHotKey() {
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guard hotKeyRef != nil else { return }
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let err = UnregisterEventHotKey(hotKeyRef)
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if err == noErr {
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// WARNING: Does it unregister no matter what on error?
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hotKeyRef = nil
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print("Successfully unregistered hot key.")
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} else {
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print("Failed to unregistered hot key.")
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}
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}
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}
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