LeadKit/Sources/Structures/DataLoading/PaginationDataLoading/AnyPaginationWrappable.swift

77 lines
2.4 KiB
Swift

//
// Copyright (c) 2018 Touch Instinct
//
// 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.
//
import UIKit
/// Type that performs some kind of type erasure for PaginationWrappable.
public final class AnyPaginationWrappable: PaginationWrappable {
private typealias ViewSetter = (UIView?) -> Void
private typealias ViewGetter = () -> UIView?
public var footerView: UIView? {
get {
footerViewGetter()
}
set {
footerViewSetter(newValue)
}
}
public var backgroundView: UIView? {
get {
backgroundViewGetter()
}
set {
backgroundViewSetter(newValue)
}
}
public let scrollView: UIScrollView
private let backgroundViewSetter: ViewSetter
private let footerViewSetter: ViewSetter
private let backgroundViewGetter: ViewGetter
private let footerViewGetter: ViewGetter
public init<View: PaginationWrappable>(view: View) {
self.scrollView = view.scrollView
var localView = view
self.backgroundViewSetter = {
localView.backgroundView = $0
}
self.backgroundViewGetter = {
localView.backgroundView
}
self.footerViewSetter = {
localView.footerView = $0
}
self.footerViewGetter = {
localView.footerView
}
}
}