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NSMenuItem.swift
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NSMenuItem.swift
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import Cocoa
import Foundation
/// Source: Gifski
/// v2.7.0
/// https://github.com/sindresorhus/Gifski
///
/// MIT License
///
/// 漏 2019 Sindre Sorhus <[email protected]> (sindresorhus.com)
/// 漏 2019 Kornel Lesi艅ski <[email protected]> (gif.ski)
///
/// Permission is hereby granted, free of charge, to any person obtaining a copy of this software
/// and associated documentation files (the "Software"), to deal in the Software without
/// restriction, including without limitation the rights to use, copy, modify, merge, publish,
/// distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
/// Software is furnished to do so, subject to the following conditions:
///
/// The above copyright notice and this permission notice shall be included in all copies or
/// substantial portions of the Software.
///
/// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
/// BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
/// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
/// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
/// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
final class ObjectAssociation<T: Any> {
subscript(index: AnyObject) -> T? {
get {
objc_getAssociatedObject(index, Unmanaged.passUnretained(self).toOpaque()) as! T?
} set {
objc_setAssociatedObject(
index,
Unmanaged.passUnretained(self).toOpaque(),
newValue,
.OBJC_ASSOCIATION_RETAIN_NONATOMIC
)
}
}
}
extension NSMenuItem {
typealias ActionClosure = (NSMenuItem) -> Void
private enum AssociatedKeys {
static let onActionClosure = ObjectAssociation<ActionClosure>()
}
@objc
private func callClosureGifski(_ sender: NSMenuItem) {
onAction?(sender)
}
/// Closure version of `.action`
///
/// ```
/// let menuItem = NSMenuItem(title: "Unicorn")
/// menuItem.onAction = { sender in
/// print("NSMenuItem action: \(sender)")
/// }
/// ```
var onAction: ActionClosure? {
get { AssociatedKeys.onActionClosure[self] }
set {
AssociatedKeys.onActionClosure[self] = newValue
action = #selector(callClosureGifski)
target = self
}
}
}