Load incomplete content, show errors

CHDataManagement/Views/Generation/GenerationStringIssuesView.swift

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+import SwiftUI
+
+struct GenerationStringIssuesView<T>: View where T: Hashable {
+
+    let text: String
+
+    let statusWhenNonEmpty: IssueStatus
+
+    @Binding
+    var items: Set<T>
+
+    let map: (T) -> String
+
+    @State
+    private var showList = false
+
+    var status: IssueStatus {
+        items.isEmpty ? .nominal : statusWhenNonEmpty
+    }
+
+    init(text: String, statusWhenNonEmpty: IssueStatus = .error, items: Binding<Set<T>>, map: @escaping (T) -> String) {
+        self.text = text
+        self.statusWhenNonEmpty = statusWhenNonEmpty
+        self._items = items
+        self.map = map
+    }
+
+    var body: some View {
+        HStack {
+            Button(action: showListIfNonEmpty) {
+                Image(systemSymbol: status.symbol)
+                    .foregroundStyle(status.color)
+            }.buttonStyle(.plain)
+            Text("\(items.count) \(text)")
+        }
+        .sheet(isPresented: $showList) {
+            VStack {
+                Text("\(items.count) \(text)")
+                    .font(.title)
+                List(items.map(map).sorted(), id: \.self) { item in
+                    Text(item)
+                }
+                .frame(minHeight: 400)
+                Button("Close") { showList = false }
+            }.padding()
+        }
+    }
+
+    private func showListIfNonEmpty() {
+        guard !items.isEmpty else {
+            return
+        }
+        showList = true
+    }
+}
+
+extension GenerationStringIssuesView where T == String {
+
+    init(text: String, statusWhenNonEmpty: IssueStatus = .error, items: Binding<Set<String>>) {
+        self.text = text
+        self.statusWhenNonEmpty = statusWhenNonEmpty
+        self._items = items
+        self.map = { $0 }
+    }
+}