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import SwiftUI
import LinkPresentation
fileprivate class CustomLinkView: LPLinkView {
override var intrinsicContentSize: CGSize { CGSize(width: 0, height: super.intrinsicContentSize.height) }
}
struct AsyncLinkPreview: View {
@State private var metadata: LPLinkMetadata?
@State private var isLoading = true
let url: URL?
func fetchMetadata() async {
guard let url else {
self.isLoading = false
return
}
do {
let provider = LPMetadataProvider()
let metadata = try await provider.startFetchingMetadata(for: url)
self.metadata = metadata
self.isLoading = false
} catch {
self.isLoading = false
}
}
var body: some View {
if isLoading {
ProgressView()
.controlSize(.small)
.task {
await self.fetchMetadata()
}
} else if let metadata = metadata {
LinkView(metadata: metadata)
.frame(width: 200)
} else {
Text(LocalizedStringKey(url!.absoluteString))
.multilineTextAlignment(.leading)
.tint(Color("Link Color"))
}
}
}
struct LinkView: NSViewRepresentable {
var metadata: LPLinkMetadata
func makeNSView(context: Context) -> LPLinkView {
let linkView = CustomLinkView(metadata: metadata)
return linkView
}
func updateNSView(_ nsView: LPLinkView, context: Context) {
// Nothing required
}
}
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