Toast.swift
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/*
* Toast.swift
*
* DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
* Version 2, December 2004
*
* Copyright (C) 2013-2015 Su Yeol Jeon
*
* Everyone is permitted to copy and distribute verbatim or modified
* copies of this license document, and changing it is allowed as long
* as the name is changed.
*
* DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
* TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
*
* 0. You just DO WHAT THE FUCK YOU WANT TO.
*
*/
import UIKit
public struct Delay {
public static let short: TimeInterval = 2.0
public static let long: TimeInterval = 3.5
}
open class Toast: Operation {
// MARK: Properties
public var text: String? {
get { return self.view.text }
set { self.view.text = newValue }
}
public var delay: TimeInterval
public var duration: TimeInterval
private var _executing = false
override open var isExecuting: Bool {
get {
return self._executing
}
set {
self.willChangeValue(forKey: "isExecuting")
self._executing = newValue
self.didChangeValue(forKey: "isExecuting")
}
}
private var _finished = false
override open var isFinished: Bool {
get {
return self._finished
}
set {
self.willChangeValue(forKey: "isFinished")
self._finished = newValue
self.didChangeValue(forKey: "isFinished")
}
}
// MARK: UI
public var view: ToastView = ToastView()
// MARK: Initializing
public init(text: String?, delay: TimeInterval = 0, duration: TimeInterval = Delay.short) {
self.delay = delay
self.duration = duration
super.init()
self.text = text
}
// MARK: Factory (Deprecated)
@available(*, deprecated, message: "Use 'init(text:)' instead.")
public class func makeText(_ text: String) -> Toast {
return Toast(text: text)
}
@available(*, deprecated, message: "Use 'init(text:duration:)' instead.")
public class func makeText(_ text: String, duration: TimeInterval) -> Toast {
return Toast(text: text, duration: duration)
}
@available(*, deprecated, message: "Use 'init(text:delay:duration:)' instead.")
public class func makeText(_ text: String?, delay: TimeInterval, duration: TimeInterval) -> Toast {
return Toast(text: text, delay: delay, duration: duration)
}
// MARK: Showing
public func show() {
ToastCenter.default.add(self)
}
// MARK: Cancelling
open override func cancel() {
super.cancel()
self.finish()
self.view.removeFromSuperview()
}
// MARK: Operation Subclassing
override open func start() {
guard Thread.isMainThread else {
DispatchQueue.main.async { [weak self] in
self?.start()
}
return
}
super.start()
}
override open func main() {
self.isExecuting = true
DispatchQueue.main.async {
self.view.setNeedsLayout()
self.view.alpha = 0
ToastWindow.shared.addSubview(self.view)
UIView.animate(
withDuration: 0.5,
delay: self.delay,
options: .beginFromCurrentState,
animations: {
self.view.alpha = 1
},
completion: { completed in
UIView.animate(
withDuration: self.duration,
animations: {
self.view.alpha = 1.0001
},
completion: { completed in
self.finish()
UIView.animate(
withDuration: 0.5,
animations: {
self.view.alpha = 0
},
completion: { completed in
self.view.removeFromSuperview()
}
)
}
)
}
)
}
}
open func finish() {
self.isExecuting = false
self.isFinished = true
}
}