76 lines
2.7 KiB
Swift
76 lines
2.7 KiB
Swift
import SwiftUI
|
|
import UIKit
|
|
|
|
struct RefreshableScrollView<Content: View>: UIViewRepresentable {
|
|
var content: Content
|
|
var onRefresh: () -> Void
|
|
var onScroll: ((CGPoint) -> Void)?
|
|
var isRefreshing: Binding<Bool>
|
|
|
|
init(isRefreshing: Binding<Bool>, onRefresh: @escaping () -> Void, onScroll: ((CGPoint) -> Void)? = nil, @ViewBuilder content: () -> Content) {
|
|
self.content = content()
|
|
self.onRefresh = onRefresh
|
|
self.onScroll = onScroll
|
|
self.isRefreshing = isRefreshing
|
|
}
|
|
|
|
func makeUIView(context: Context) -> UIScrollView {
|
|
let scrollView = UIScrollView()
|
|
scrollView.delaysContentTouches = false
|
|
scrollView.delegate = context.coordinator
|
|
|
|
let refreshControl = UIRefreshControl()
|
|
refreshControl.addTarget(context.coordinator, action: #selector(Coordinator.handleRefresh), for: .valueChanged)
|
|
scrollView.refreshControl = refreshControl
|
|
|
|
let hostingController = UIHostingController(rootView: content)
|
|
hostingController.view.translatesAutoresizingMaskIntoConstraints = false
|
|
scrollView.addSubview(hostingController.view)
|
|
|
|
NSLayoutConstraint.activate([
|
|
hostingController.view.leadingAnchor.constraint(equalTo: scrollView.contentLayoutGuide.leadingAnchor),
|
|
hostingController.view.trailingAnchor.constraint(equalTo: scrollView.contentLayoutGuide.trailingAnchor),
|
|
hostingController.view.topAnchor.constraint(equalTo: scrollView.contentLayoutGuide.topAnchor),
|
|
hostingController.view.bottomAnchor.constraint(equalTo: scrollView.contentLayoutGuide.bottomAnchor),
|
|
hostingController.view.widthAnchor.constraint(equalTo: scrollView.frameLayoutGuide.widthAnchor)
|
|
])
|
|
|
|
context.coordinator.hostingController = hostingController
|
|
|
|
return scrollView
|
|
}
|
|
|
|
func updateUIView(_ uiView: UIScrollView, context: Context) {
|
|
if isRefreshing.wrappedValue {
|
|
uiView.refreshControl?.beginRefreshing()
|
|
} else {
|
|
DispatchQueue.main.async {
|
|
uiView.refreshControl?.endRefreshing()
|
|
}
|
|
}
|
|
|
|
context.coordinator.hostingController?.rootView = content
|
|
}
|
|
|
|
func makeCoordinator() -> Coordinator {
|
|
Coordinator(self)
|
|
}
|
|
|
|
class Coordinator: NSObject, UIScrollViewDelegate {
|
|
var parent: RefreshableScrollView
|
|
var hostingController: UIHostingController<Content>?
|
|
|
|
init(_ parent: RefreshableScrollView) {
|
|
self.parent = parent
|
|
}
|
|
|
|
@objc func handleRefresh() {
|
|
parent.onRefresh()
|
|
}
|
|
|
|
func scrollViewDidScroll(_ scrollView: UIScrollView) {
|
|
parent.onScroll?(scrollView.contentOffset)
|
|
}
|
|
}
|
|
}
|