58 lines
1.3 KiB
Swift
58 lines
1.3 KiB
Swift
import Cocoa
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class EventMonitor {
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fileprivate let mask: NSEvent.EventTypeMask
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fileprivate var monitor: Any?
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fileprivate init(mask: NSEvent.EventTypeMask) {
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self.mask = mask
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}
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deinit {
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stop()
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}
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func start() {
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fatalError("start must be implemented by a subclass")
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}
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func stop() {
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if monitor != nil {
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NSEvent.removeMonitor(monitor!)
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monitor = nil
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}
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}
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}
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final class LocalEventMonitor: EventMonitor {
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typealias Handler = (NSEvent) -> NSEvent?
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private let handler: Handler
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init(mask: NSEvent.EventTypeMask, handler: @escaping Handler) {
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self.handler = handler
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super.init(mask: mask)
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}
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override func start() {
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monitor = NSEvent.addLocalMonitorForEvents(matching: mask,
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handler: handler)
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}
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}
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final class GlobalEventMonitor: EventMonitor {
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typealias Handler = (NSEvent) -> Void
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private let handler: Handler
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init(mask: NSEvent.EventTypeMask, handler: @escaping Handler) {
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self.handler = handler
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super.init(mask: mask)
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}
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override func start() {
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monitor = NSEvent.addGlobalMonitorForEvents(matching: mask,
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handler: handler)
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}
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}
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