39 lines
1.2 KiB
Swift
39 lines
1.2 KiB
Swift
/*
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Copyright 2019 New Vector Ltd
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import UIKit
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// Source: https://stackoverflow.com/a/44917661
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class ClosureSleeve {
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let closure: () -> Void
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init(attachTo: AnyObject, closure: @escaping () -> Void) {
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self.closure = closure
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objc_setAssociatedObject(attachTo, "[\(arc4random())]", self, .OBJC_ASSOCIATION_RETAIN)
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}
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@objc func invoke() {
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closure()
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}
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}
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extension UIControl {
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func vc_addAction(for controlEvents: UIControl.Event = .primaryActionTriggered, action: @escaping () -> Void) {
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let sleeve = ClosureSleeve(attachTo: self, closure: action)
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addTarget(sleeve, action: #selector(ClosureSleeve.invoke), for: controlEvents)
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}
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}
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