yattee/Vendor/RefreshControl/RefreshControlModifier.swift

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//
// RefreshControlModifier.swift
// SwiftUI_Pull_to_Refresh
//
// Created by Geri Borbás on 18/09/2021.
//
import Foundation
import SwiftUI
struct RefreshControlModifier: ViewModifier {
@State private var geometryReaderFrame: CGRect = .zero
let refreshControl: RefreshControl
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init(onValueChanged: @escaping (UIRefreshControl) -> Void) {
refreshControl = RefreshControl(onValueChanged: onValueChanged)
}
func body(content: Content) -> some View {
if #available(iOS 15.0, macOS 12.0, tvOS 15.0, *) {
return content
} else {
return content
.background(
GeometryReader { geometry in
ScrollViewMatcher(
onResolve: { scrollView in
refreshControl.add(to: scrollView)
},
geometryReaderFrame: $geometryReaderFrame
)
.preference(key: FramePreferenceKey.self, value: geometry.frame(in: .global))
.onPreferenceChange(FramePreferenceKey.self) { frame in
self.geometryReaderFrame = frame
}
}
)
}
}
}
extension View {
func refreshControl(onValueChanged: @escaping (_ refreshControl: UIRefreshControl) -> Void) -> some View {
modifier(RefreshControlModifier(onValueChanged: onValueChanged))
}
}