Shin Yamamoto
64 lines
2.1 KiB
Swift
64 lines
2.1 KiB
Swift
// Copyright 2018-Present Shin Yamamoto. All rights reserved. MIT license.
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import Foundation
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/// An object that represents the display state of a panel in a screen.
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@objc
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public class FloatingPanelState: NSObject, NSCopying, RawRepresentable {
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public typealias RawValue = String
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required public init?(rawValue: RawValue) {
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self.order = 0
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self.rawValue = rawValue
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super.init()
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}
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public init(rawValue: RawValue, order: Int) {
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self.rawValue = rawValue
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self.order = order
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super.init()
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}
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/// The corresponding value of the raw type.
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public let rawValue: RawValue
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/// The sorting order for states
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public let order: Int
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public func copy(with zone: NSZone? = nil) -> Any {
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return self
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}
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public override var description: String {
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return rawValue
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}
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public override var debugDescription: String {
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return description
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}
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/// A panel state indicates the entire panel is shown.
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@objc(Full) public static let full: FloatingPanelState = FloatingPanelState(rawValue: "full", order: 1000)
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/// A panel state indicates the half of a panel is shown.
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@objc(Half) public static let half: FloatingPanelState = FloatingPanelState(rawValue: "half", order: 500)
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/// A panel state indicates the tip of a panel is shown.
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@objc(Tip) public static let tip: FloatingPanelState = FloatingPanelState(rawValue: "tip", order: 100)
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/// A panel state indicates it is hidden.
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@objc(Hidden) public static let hidden: FloatingPanelState = FloatingPanelState(rawValue: "hidden", order: 0)
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}
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extension FloatingPanelState {
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func next(in states: [FloatingPanelState]) -> FloatingPanelState {
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if let index = states.firstIndex(of: self), states.indices.contains(index + 1) {
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return states[index + 1]
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}
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return self
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}
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func pre(in states: [FloatingPanelState]) -> FloatingPanelState {
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if let index = states.firstIndex(of: self), states.indices.contains(index - 1) {
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return states[index - 1]
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}
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return self
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}
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}
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